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vanten-s 2023-08-01 21:04:58 +02:00
commit 82307d5102
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frmWrk Submodule

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Subproject commit 8917135a5513f22926ae079c375ae44dd398fd35

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log.txt Normal file
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import frmWrk.website
import markdown
def router(method, path, headers):
return "200 OK", "Hello".encode("utf-8"), {}
webserver = frmWrk.website.WebServer("localhost", 3000, "./src/", custom_router=router)
webserver.start()

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h1 {
text-align: center;
}

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<!doctype html>
<html>
<head>
<meta charset="utf-8"/>
<title>Marked in the browser</title>
<link rel="stylesheet" href="assets/main.css">
</head>
<body>
<div id="content"></div>
<script src="https://cdn.jsdelivr.net/npm/marked/marked.min.js"></script>
<script>
document.getElementById('content').innerHTML =
marked.parse('# Marked in the browser\n\nRendered by **marked**.');
</script>
</body>
</html>

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<#
.Synopsis
Activate a Python virtual environment for the current PowerShell session.
.Description
Pushes the python executable for a virtual environment to the front of the
$Env:PATH environment variable and sets the prompt to signify that you are
in a Python virtual environment. Makes use of the command line switches as
well as the `pyvenv.cfg` file values present in the virtual environment.
.Parameter VenvDir
Path to the directory that contains the virtual environment to activate. The
default value for this is the parent of the directory that the Activate.ps1
script is located within.
.Parameter Prompt
The prompt prefix to display when this virtual environment is activated. By
default, this prompt is the name of the virtual environment folder (VenvDir)
surrounded by parentheses and followed by a single space (ie. '(.venv) ').
.Example
Activate.ps1
Activates the Python virtual environment that contains the Activate.ps1 script.
.Example
Activate.ps1 -Verbose
Activates the Python virtual environment that contains the Activate.ps1 script,
and shows extra information about the activation as it executes.
.Example
Activate.ps1 -VenvDir C:\Users\MyUser\Common\.venv
Activates the Python virtual environment located in the specified location.
.Example
Activate.ps1 -Prompt "MyPython"
Activates the Python virtual environment that contains the Activate.ps1 script,
and prefixes the current prompt with the specified string (surrounded in
parentheses) while the virtual environment is active.
.Notes
On Windows, it may be required to enable this Activate.ps1 script by setting the
execution policy for the user. You can do this by issuing the following PowerShell
command:
PS C:\> Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
For more information on Execution Policies:
https://go.microsoft.com/fwlink/?LinkID=135170
#>
Param(
[Parameter(Mandatory = $false)]
[String]
$VenvDir,
[Parameter(Mandatory = $false)]
[String]
$Prompt
)
<# Function declarations --------------------------------------------------- #>
<#
.Synopsis
Remove all shell session elements added by the Activate script, including the
addition of the virtual environment's Python executable from the beginning of
the PATH variable.
.Parameter NonDestructive
If present, do not remove this function from the global namespace for the
session.
#>
function global:deactivate ([switch]$NonDestructive) {
# Revert to original values
# The prior prompt:
if (Test-Path -Path Function:_OLD_VIRTUAL_PROMPT) {
Copy-Item -Path Function:_OLD_VIRTUAL_PROMPT -Destination Function:prompt
Remove-Item -Path Function:_OLD_VIRTUAL_PROMPT
}
# The prior PYTHONHOME:
if (Test-Path -Path Env:_OLD_VIRTUAL_PYTHONHOME) {
Copy-Item -Path Env:_OLD_VIRTUAL_PYTHONHOME -Destination Env:PYTHONHOME
Remove-Item -Path Env:_OLD_VIRTUAL_PYTHONHOME
}
# The prior PATH:
if (Test-Path -Path Env:_OLD_VIRTUAL_PATH) {
Copy-Item -Path Env:_OLD_VIRTUAL_PATH -Destination Env:PATH
Remove-Item -Path Env:_OLD_VIRTUAL_PATH
}
# Just remove the VIRTUAL_ENV altogether:
if (Test-Path -Path Env:VIRTUAL_ENV) {
Remove-Item -Path env:VIRTUAL_ENV
}
# Just remove VIRTUAL_ENV_PROMPT altogether.
if (Test-Path -Path Env:VIRTUAL_ENV_PROMPT) {
Remove-Item -Path env:VIRTUAL_ENV_PROMPT
}
# Just remove the _PYTHON_VENV_PROMPT_PREFIX altogether:
if (Get-Variable -Name "_PYTHON_VENV_PROMPT_PREFIX" -ErrorAction SilentlyContinue) {
Remove-Variable -Name _PYTHON_VENV_PROMPT_PREFIX -Scope Global -Force
}
# Leave deactivate function in the global namespace if requested:
if (-not $NonDestructive) {
Remove-Item -Path function:deactivate
}
}
<#
.Description
Get-PyVenvConfig parses the values from the pyvenv.cfg file located in the
given folder, and returns them in a map.
For each line in the pyvenv.cfg file, if that line can be parsed into exactly
two strings separated by `=` (with any amount of whitespace surrounding the =)
then it is considered a `key = value` line. The left hand string is the key,
the right hand is the value.
If the value starts with a `'` or a `"` then the first and last character is
stripped from the value before being captured.
.Parameter ConfigDir
Path to the directory that contains the `pyvenv.cfg` file.
#>
function Get-PyVenvConfig(
[String]
$ConfigDir
) {
Write-Verbose "Given ConfigDir=$ConfigDir, obtain values in pyvenv.cfg"
# Ensure the file exists, and issue a warning if it doesn't (but still allow the function to continue).
$pyvenvConfigPath = Join-Path -Resolve -Path $ConfigDir -ChildPath 'pyvenv.cfg' -ErrorAction Continue
# An empty map will be returned if no config file is found.
$pyvenvConfig = @{ }
if ($pyvenvConfigPath) {
Write-Verbose "File exists, parse `key = value` lines"
$pyvenvConfigContent = Get-Content -Path $pyvenvConfigPath
$pyvenvConfigContent | ForEach-Object {
$keyval = $PSItem -split "\s*=\s*", 2
if ($keyval[0] -and $keyval[1]) {
$val = $keyval[1]
# Remove extraneous quotations around a string value.
if ("'""".Contains($val.Substring(0, 1))) {
$val = $val.Substring(1, $val.Length - 2)
}
$pyvenvConfig[$keyval[0]] = $val
Write-Verbose "Adding Key: '$($keyval[0])'='$val'"
}
}
}
return $pyvenvConfig
}
<# Begin Activate script --------------------------------------------------- #>
# Determine the containing directory of this script
$VenvExecPath = Split-Path -Parent $MyInvocation.MyCommand.Definition
$VenvExecDir = Get-Item -Path $VenvExecPath
Write-Verbose "Activation script is located in path: '$VenvExecPath'"
Write-Verbose "VenvExecDir Fullname: '$($VenvExecDir.FullName)"
Write-Verbose "VenvExecDir Name: '$($VenvExecDir.Name)"
# Set values required in priority: CmdLine, ConfigFile, Default
# First, get the location of the virtual environment, it might not be
# VenvExecDir if specified on the command line.
if ($VenvDir) {
Write-Verbose "VenvDir given as parameter, using '$VenvDir' to determine values"
}
else {
Write-Verbose "VenvDir not given as a parameter, using parent directory name as VenvDir."
$VenvDir = $VenvExecDir.Parent.FullName.TrimEnd("\\/")
Write-Verbose "VenvDir=$VenvDir"
}
# Next, read the `pyvenv.cfg` file to determine any required value such
# as `prompt`.
$pyvenvCfg = Get-PyVenvConfig -ConfigDir $VenvDir
# Next, set the prompt from the command line, or the config file, or
# just use the name of the virtual environment folder.
if ($Prompt) {
Write-Verbose "Prompt specified as argument, using '$Prompt'"
}
else {
Write-Verbose "Prompt not specified as argument to script, checking pyvenv.cfg value"
if ($pyvenvCfg -and $pyvenvCfg['prompt']) {
Write-Verbose " Setting based on value in pyvenv.cfg='$($pyvenvCfg['prompt'])'"
$Prompt = $pyvenvCfg['prompt'];
}
else {
Write-Verbose " Setting prompt based on parent's directory's name. (Is the directory name passed to venv module when creating the virtual environment)"
Write-Verbose " Got leaf-name of $VenvDir='$(Split-Path -Path $venvDir -Leaf)'"
$Prompt = Split-Path -Path $venvDir -Leaf
}
}
Write-Verbose "Prompt = '$Prompt'"
Write-Verbose "VenvDir='$VenvDir'"
# Deactivate any currently active virtual environment, but leave the
# deactivate function in place.
deactivate -nondestructive
# Now set the environment variable VIRTUAL_ENV, used by many tools to determine
# that there is an activated venv.
$env:VIRTUAL_ENV = $VenvDir
if (-not $Env:VIRTUAL_ENV_DISABLE_PROMPT) {
Write-Verbose "Setting prompt to '$Prompt'"
# Set the prompt to include the env name
# Make sure _OLD_VIRTUAL_PROMPT is global
function global:_OLD_VIRTUAL_PROMPT { "" }
Copy-Item -Path function:prompt -Destination function:_OLD_VIRTUAL_PROMPT
New-Variable -Name _PYTHON_VENV_PROMPT_PREFIX -Description "Python virtual environment prompt prefix" -Scope Global -Option ReadOnly -Visibility Public -Value $Prompt
function global:prompt {
Write-Host -NoNewline -ForegroundColor Green "($_PYTHON_VENV_PROMPT_PREFIX) "
_OLD_VIRTUAL_PROMPT
}
$env:VIRTUAL_ENV_PROMPT = $Prompt
}
# Clear PYTHONHOME
if (Test-Path -Path Env:PYTHONHOME) {
Copy-Item -Path Env:PYTHONHOME -Destination Env:_OLD_VIRTUAL_PYTHONHOME
Remove-Item -Path Env:PYTHONHOME
}
# Add the venv to the PATH
Copy-Item -Path Env:PATH -Destination Env:_OLD_VIRTUAL_PATH
$Env:PATH = "$VenvExecDir$([System.IO.Path]::PathSeparator)$Env:PATH"

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# This file must be used with "source bin/activate" *from bash*
# you cannot run it directly
deactivate () {
# reset old environment variables
if [ -n "${_OLD_VIRTUAL_PATH:-}" ] ; then
PATH="${_OLD_VIRTUAL_PATH:-}"
export PATH
unset _OLD_VIRTUAL_PATH
fi
if [ -n "${_OLD_VIRTUAL_PYTHONHOME:-}" ] ; then
PYTHONHOME="${_OLD_VIRTUAL_PYTHONHOME:-}"
export PYTHONHOME
unset _OLD_VIRTUAL_PYTHONHOME
fi
# This should detect bash and zsh, which have a hash command that must
# be called to get it to forget past commands. Without forgetting
# past commands the $PATH changes we made may not be respected
if [ -n "${BASH:-}" -o -n "${ZSH_VERSION:-}" ] ; then
hash -r 2> /dev/null
fi
if [ -n "${_OLD_VIRTUAL_PS1:-}" ] ; then
PS1="${_OLD_VIRTUAL_PS1:-}"
export PS1
unset _OLD_VIRTUAL_PS1
fi
unset VIRTUAL_ENV
unset VIRTUAL_ENV_PROMPT
if [ ! "${1:-}" = "nondestructive" ] ; then
# Self destruct!
unset -f deactivate
fi
}
# unset irrelevant variables
deactivate nondestructive
VIRTUAL_ENV="/home/ricer/projects/vanten-s.com/venv"
export VIRTUAL_ENV
_OLD_VIRTUAL_PATH="$PATH"
PATH="$VIRTUAL_ENV/bin:$PATH"
export PATH
# unset PYTHONHOME if set
# this will fail if PYTHONHOME is set to the empty string (which is bad anyway)
# could use `if (set -u; : $PYTHONHOME) ;` in bash
if [ -n "${PYTHONHOME:-}" ] ; then
_OLD_VIRTUAL_PYTHONHOME="${PYTHONHOME:-}"
unset PYTHONHOME
fi
if [ -z "${VIRTUAL_ENV_DISABLE_PROMPT:-}" ] ; then
_OLD_VIRTUAL_PS1="${PS1:-}"
PS1="(venv) ${PS1:-}"
export PS1
VIRTUAL_ENV_PROMPT="(venv) "
export VIRTUAL_ENV_PROMPT
fi
# This should detect bash and zsh, which have a hash command that must
# be called to get it to forget past commands. Without forgetting
# past commands the $PATH changes we made may not be respected
if [ -n "${BASH:-}" -o -n "${ZSH_VERSION:-}" ] ; then
hash -r 2> /dev/null
fi

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# This file must be used with "source bin/activate.csh" *from csh*.
# You cannot run it directly.
# Created by Davide Di Blasi <davidedb@gmail.com>.
# Ported to Python 3.3 venv by Andrew Svetlov <andrew.svetlov@gmail.com>
alias deactivate 'test $?_OLD_VIRTUAL_PATH != 0 && setenv PATH "$_OLD_VIRTUAL_PATH" && unset _OLD_VIRTUAL_PATH; rehash; test $?_OLD_VIRTUAL_PROMPT != 0 && set prompt="$_OLD_VIRTUAL_PROMPT" && unset _OLD_VIRTUAL_PROMPT; unsetenv VIRTUAL_ENV; unsetenv VIRTUAL_ENV_PROMPT; test "\!:*" != "nondestructive" && unalias deactivate'
# Unset irrelevant variables.
deactivate nondestructive
setenv VIRTUAL_ENV "/home/ricer/projects/vanten-s.com/venv"
set _OLD_VIRTUAL_PATH="$PATH"
setenv PATH "$VIRTUAL_ENV/bin:$PATH"
set _OLD_VIRTUAL_PROMPT="$prompt"
if (! "$?VIRTUAL_ENV_DISABLE_PROMPT") then
set prompt = "(venv) $prompt"
setenv VIRTUAL_ENV_PROMPT "(venv) "
endif
alias pydoc python -m pydoc
rehash

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# This file must be used with "source <venv>/bin/activate.fish" *from fish*
# (https://fishshell.com/); you cannot run it directly.
function deactivate -d "Exit virtual environment and return to normal shell environment"
# reset old environment variables
if test -n "$_OLD_VIRTUAL_PATH"
set -gx PATH $_OLD_VIRTUAL_PATH
set -e _OLD_VIRTUAL_PATH
end
if test -n "$_OLD_VIRTUAL_PYTHONHOME"
set -gx PYTHONHOME $_OLD_VIRTUAL_PYTHONHOME
set -e _OLD_VIRTUAL_PYTHONHOME
end
if test -n "$_OLD_FISH_PROMPT_OVERRIDE"
set -e _OLD_FISH_PROMPT_OVERRIDE
# prevents error when using nested fish instances (Issue #93858)
if functions -q _old_fish_prompt
functions -e fish_prompt
functions -c _old_fish_prompt fish_prompt
functions -e _old_fish_prompt
end
end
set -e VIRTUAL_ENV
set -e VIRTUAL_ENV_PROMPT
if test "$argv[1]" != "nondestructive"
# Self-destruct!
functions -e deactivate
end
end
# Unset irrelevant variables.
deactivate nondestructive
set -gx VIRTUAL_ENV "/home/ricer/projects/vanten-s.com/venv"
set -gx _OLD_VIRTUAL_PATH $PATH
set -gx PATH "$VIRTUAL_ENV/bin" $PATH
# Unset PYTHONHOME if set.
if set -q PYTHONHOME
set -gx _OLD_VIRTUAL_PYTHONHOME $PYTHONHOME
set -e PYTHONHOME
end
if test -z "$VIRTUAL_ENV_DISABLE_PROMPT"
# fish uses a function instead of an env var to generate the prompt.
# Save the current fish_prompt function as the function _old_fish_prompt.
functions -c fish_prompt _old_fish_prompt
# With the original prompt function renamed, we can override with our own.
function fish_prompt
# Save the return status of the last command.
set -l old_status $status
# Output the venv prompt; color taken from the blue of the Python logo.
printf "%s%s%s" (set_color 4B8BBE) "(venv) " (set_color normal)
# Restore the return status of the previous command.
echo "exit $old_status" | .
# Output the original/"old" prompt.
_old_fish_prompt
end
set -gx _OLD_FISH_PROMPT_OVERRIDE "$VIRTUAL_ENV"
set -gx VIRTUAL_ENV_PROMPT "(venv) "
end

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#!/home/ricer/projects/vanten-s.com/venv/bin/python
# -*- coding: utf-8 -*-
import re
import sys
from markdown.__main__ import run
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(run())

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#!/home/ricer/projects/vanten-s.com/venv/bin/python
# -*- coding: utf-8 -*-
import re
import sys
from pip._internal.cli.main import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(main())

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#!/home/ricer/projects/vanten-s.com/venv/bin/python
# -*- coding: utf-8 -*-
import re
import sys
from pip._internal.cli.main import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(main())

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#!/home/ricer/projects/vanten-s.com/venv/bin/python
# -*- coding: utf-8 -*-
import re
import sys
from pip._internal.cli.main import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(main())

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/usr/bin/python

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python

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python

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pip

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Copyright 2007, 2008 The Python Markdown Project (v. 1.7 and later)
Copyright 2004, 2005, 2006 Yuri Takhteyev (v. 0.2-1.6b)
Copyright 2004 Manfred Stienstra (the original version)
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the Python Markdown Project nor the
names of its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE PYTHON MARKDOWN PROJECT ''AS IS'' AND ANY
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL ANY CONTRIBUTORS TO THE PYTHON MARKDOWN PROJECT
BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.

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Metadata-Version: 2.1
Name: Markdown
Version: 3.4.4
Summary: Python implementation of John Gruber's Markdown.
Author: Manfred Stienstra, Yuri Takhteyev
Author-email: Waylan limberg <python.markdown@gmail.com>
Maintainer: Isaac Muse
Maintainer-email: Waylan Limberg <python.markdown@gmail.com>
License: Copyright 2007, 2008 The Python Markdown Project (v. 1.7 and later)
Copyright 2004, 2005, 2006 Yuri Takhteyev (v. 0.2-1.6b)
Copyright 2004 Manfred Stienstra (the original version)
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the Python Markdown Project nor the
names of its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE PYTHON MARKDOWN PROJECT ''AS IS'' AND ANY
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL ANY CONTRIBUTORS TO THE PYTHON MARKDOWN PROJECT
BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
Project-URL: Homepage, https://Python-Markdown.github.io/
Project-URL: Documentation, https://Python-Markdown.github.io/
Project-URL: Repository, https://github.com/Python-Markdown/markdown
Project-URL: Issue Tracker, https://github.com/Python-Markdown/markdown/issues
Project-URL: Changelog, https://github.com/Python-Markdown/markdown/blob/master/docs/change_log/index.md
Keywords: markdown,markdown-parser,python-markdown,markdown-to-html
Classifier: Development Status :: 5 - Production/Stable
Classifier: License :: OSI Approved :: BSD License
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: 3.8
Classifier: Programming Language :: Python :: 3.9
Classifier: Programming Language :: Python :: 3.10
Classifier: Programming Language :: Python :: 3.11
Classifier: Programming Language :: Python :: 3 :: Only
Classifier: Programming Language :: Python :: Implementation :: CPython
Classifier: Programming Language :: Python :: Implementation :: PyPy
Classifier: Topic :: Communications :: Email :: Filters
Classifier: Topic :: Internet :: WWW/HTTP :: Dynamic Content :: CGI Tools/Libraries
Classifier: Topic :: Internet :: WWW/HTTP :: Site Management
Classifier: Topic :: Software Development :: Documentation
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Classifier: Topic :: Text Processing :: Filters
Classifier: Topic :: Text Processing :: Markup :: HTML
Classifier: Topic :: Text Processing :: Markup :: Markdown
Requires-Python: >=3.7
Description-Content-Type: text/markdown
License-File: LICENSE.md
Requires-Dist: importlib-metadata (>=4.4) ; python_version < "3.10"
Provides-Extra: docs
Requires-Dist: mkdocs (>=1.0) ; extra == 'docs'
Requires-Dist: mkdocs-nature (>=0.4) ; extra == 'docs'
Requires-Dist: mdx-gh-links (>=0.2) ; extra == 'docs'
Provides-Extra: testing
Requires-Dist: coverage ; extra == 'testing'
Requires-Dist: pyyaml ; extra == 'testing'
[Python-Markdown][]
===================
[![Build Status][build-button]][build]
[![Coverage Status][codecov-button]][codecov]
[![Latest Version][mdversion-button]][md-pypi]
[![Python Versions][pyversion-button]][md-pypi]
[![BSD License][bsdlicense-button]][bsdlicense]
[![Code of Conduct][codeofconduct-button]][Code of Conduct]
[build-button]: https://github.com/Python-Markdown/markdown/workflows/CI/badge.svg?event=push
[build]: https://github.com/Python-Markdown/markdown/actions?query=workflow%3ACI+event%3Apush
[codecov-button]: https://codecov.io/gh/Python-Markdown/markdown/branch/master/graph/badge.svg
[codecov]: https://codecov.io/gh/Python-Markdown/markdown
[mdversion-button]: https://img.shields.io/pypi/v/Markdown.svg
[md-pypi]: https://pypi.org/project/Markdown/
[pyversion-button]: https://img.shields.io/pypi/pyversions/Markdown.svg
[bsdlicense-button]: https://img.shields.io/badge/license-BSD-yellow.svg
[bsdlicense]: https://opensource.org/licenses/BSD-3-Clause
[codeofconduct-button]: https://img.shields.io/badge/code%20of%20conduct-contributor%20covenant-green.svg?style=flat-square
[Code of Conduct]: https://github.com/Python-Markdown/markdown/blob/master/CODE_OF_CONDUCT.md
This is a Python implementation of John Gruber's [Markdown][].
It is almost completely compliant with the reference implementation,
though there are a few known issues. See [Features][] for information
on what exactly is supported and what is not. Additional features are
supported by the [Available Extensions][].
[Python-Markdown]: https://Python-Markdown.github.io/
[Markdown]: https://daringfireball.net/projects/markdown/
[Features]: https://Python-Markdown.github.io#Features
[Available Extensions]: https://Python-Markdown.github.io/extensions
Documentation
-------------
```bash
pip install markdown
```
```python
import markdown
html = markdown.markdown(your_text_string)
```
For more advanced [installation] and [usage] documentation, see the `docs/` directory
of the distribution or the project website at <https://Python-Markdown.github.io/>.
[installation]: https://python-markdown.github.io/install/
[usage]: https://python-markdown.github.io/reference/
See the change log at <https://Python-Markdown.github.io/change_log>.
Support
-------
You may report bugs, ask for help, and discuss various other issues on the [bug tracker][].
[bug tracker]: https://github.com/Python-Markdown/markdown/issues
Code of Conduct
---------------
Everyone interacting in the Python-Markdown project's code bases, issue trackers,
and mailing lists is expected to follow the [Code of Conduct].

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Wheel-Version: 1.0
Generator: bdist_wheel (0.41.0)
Root-Is-Purelib: true
Tag: py3-none-any

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[console_scripts]
markdown_py = markdown.__main__:run
[markdown.extensions]
abbr = markdown.extensions.abbr:AbbrExtension
admonition = markdown.extensions.admonition:AdmonitionExtension
attr_list = markdown.extensions.attr_list:AttrListExtension
codehilite = markdown.extensions.codehilite:CodeHiliteExtension
def_list = markdown.extensions.def_list:DefListExtension
extra = markdown.extensions.extra:ExtraExtension
fenced_code = markdown.extensions.fenced_code:FencedCodeExtension
footnotes = markdown.extensions.footnotes:FootnoteExtension
legacy_attrs = markdown.extensions.legacy_attrs:LegacyAttrExtension
legacy_em = markdown.extensions.legacy_em:LegacyEmExtension
md_in_html = markdown.extensions.md_in_html:MarkdownInHtmlExtension
meta = markdown.extensions.meta:MetaExtension
nl2br = markdown.extensions.nl2br:Nl2BrExtension
sane_lists = markdown.extensions.sane_lists:SaneListExtension
smarty = markdown.extensions.smarty:SmartyExtension
tables = markdown.extensions.tables:TableExtension
toc = markdown.extensions.toc:TocExtension
wikilinks = markdown.extensions.wikilinks:WikiLinkExtension

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markdown

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# don't import any costly modules
import sys
import os
is_pypy = '__pypy__' in sys.builtin_module_names
def warn_distutils_present():
if 'distutils' not in sys.modules:
return
if is_pypy and sys.version_info < (3, 7):
# PyPy for 3.6 unconditionally imports distutils, so bypass the warning
# https://foss.heptapod.net/pypy/pypy/-/blob/be829135bc0d758997b3566062999ee8b23872b4/lib-python/3/site.py#L250
return
import warnings
warnings.warn(
"Distutils was imported before Setuptools, but importing Setuptools "
"also replaces the `distutils` module in `sys.modules`. This may lead "
"to undesirable behaviors or errors. To avoid these issues, avoid "
"using distutils directly, ensure that setuptools is installed in the "
"traditional way (e.g. not an editable install), and/or make sure "
"that setuptools is always imported before distutils."
)
def clear_distutils():
if 'distutils' not in sys.modules:
return
import warnings
warnings.warn("Setuptools is replacing distutils.")
mods = [
name
for name in sys.modules
if name == "distutils" or name.startswith("distutils.")
]
for name in mods:
del sys.modules[name]
def enabled():
"""
Allow selection of distutils by environment variable.
"""
which = os.environ.get('SETUPTOOLS_USE_DISTUTILS', 'local')
return which == 'local'
def ensure_local_distutils():
import importlib
clear_distutils()
# With the DistutilsMetaFinder in place,
# perform an import to cause distutils to be
# loaded from setuptools._distutils. Ref #2906.
with shim():
importlib.import_module('distutils')
# check that submodules load as expected
core = importlib.import_module('distutils.core')
assert '_distutils' in core.__file__, core.__file__
assert 'setuptools._distutils.log' not in sys.modules
def do_override():
"""
Ensure that the local copy of distutils is preferred over stdlib.
See https://github.com/pypa/setuptools/issues/417#issuecomment-392298401
for more motivation.
"""
if enabled():
warn_distutils_present()
ensure_local_distutils()
class _TrivialRe:
def __init__(self, *patterns):
self._patterns = patterns
def match(self, string):
return all(pat in string for pat in self._patterns)
class DistutilsMetaFinder:
def find_spec(self, fullname, path, target=None):
# optimization: only consider top level modules and those
# found in the CPython test suite.
if path is not None and not fullname.startswith('test.'):
return
method_name = 'spec_for_{fullname}'.format(**locals())
method = getattr(self, method_name, lambda: None)
return method()
def spec_for_distutils(self):
if self.is_cpython():
return
import importlib
import importlib.abc
import importlib.util
try:
mod = importlib.import_module('setuptools._distutils')
except Exception:
# There are a couple of cases where setuptools._distutils
# may not be present:
# - An older Setuptools without a local distutils is
# taking precedence. Ref #2957.
# - Path manipulation during sitecustomize removes
# setuptools from the path but only after the hook
# has been loaded. Ref #2980.
# In either case, fall back to stdlib behavior.
return
class DistutilsLoader(importlib.abc.Loader):
def create_module(self, spec):
mod.__name__ = 'distutils'
return mod
def exec_module(self, module):
pass
return importlib.util.spec_from_loader(
'distutils', DistutilsLoader(), origin=mod.__file__
)
@staticmethod
def is_cpython():
"""
Suppress supplying distutils for CPython (build and tests).
Ref #2965 and #3007.
"""
return os.path.isfile('pybuilddir.txt')
def spec_for_pip(self):
"""
Ensure stdlib distutils when running under pip.
See pypa/pip#8761 for rationale.
"""
if self.pip_imported_during_build():
return
clear_distutils()
self.spec_for_distutils = lambda: None
@classmethod
def pip_imported_during_build(cls):
"""
Detect if pip is being imported in a build script. Ref #2355.
"""
import traceback
return any(
cls.frame_file_is_setup(frame) for frame, line in traceback.walk_stack(None)
)
@staticmethod
def frame_file_is_setup(frame):
"""
Return True if the indicated frame suggests a setup.py file.
"""
# some frames may not have __file__ (#2940)
return frame.f_globals.get('__file__', '').endswith('setup.py')
def spec_for_sensitive_tests(self):
"""
Ensure stdlib distutils when running select tests under CPython.
python/cpython#91169
"""
clear_distutils()
self.spec_for_distutils = lambda: None
sensitive_tests = (
[
'test.test_distutils',
'test.test_peg_generator',
'test.test_importlib',
]
if sys.version_info < (3, 10)
else [
'test.test_distutils',
]
)
for name in DistutilsMetaFinder.sensitive_tests:
setattr(
DistutilsMetaFinder,
f'spec_for_{name}',
DistutilsMetaFinder.spec_for_sensitive_tests,
)
DISTUTILS_FINDER = DistutilsMetaFinder()
def add_shim():
DISTUTILS_FINDER in sys.meta_path or insert_shim()
class shim:
def __enter__(self):
insert_shim()
def __exit__(self, exc, value, tb):
remove_shim()
def insert_shim():
sys.meta_path.insert(0, DISTUTILS_FINDER)
def remove_shim():
try:
sys.meta_path.remove(DISTUTILS_FINDER)
except ValueError:
pass

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import os; var = 'SETUPTOOLS_USE_DISTUTILS'; enabled = os.environ.get(var, 'local') == 'local'; enabled and __import__('_distutils_hack').add_shim();

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"""
Python Markdown
A Python implementation of John Gruber's Markdown.
Documentation: https://python-markdown.github.io/
GitHub: https://github.com/Python-Markdown/markdown/
PyPI: https://pypi.org/project/Markdown/
Started by Manfred Stienstra (http://www.dwerg.net/).
Maintained for a few years by Yuri Takhteyev (http://www.freewisdom.org).
Currently maintained by Waylan Limberg (https://github.com/waylan),
Dmitry Shachnev (https://github.com/mitya57) and Isaac Muse (https://github.com/facelessuser).
Copyright 2007-2018 The Python Markdown Project (v. 1.7 and later)
Copyright 2004, 2005, 2006 Yuri Takhteyev (v. 0.2-1.6b)
Copyright 2004 Manfred Stienstra (the original version)
License: BSD (see LICENSE.md for details).
"""
from .core import Markdown, markdown, markdownFromFile
from .__meta__ import __version__, __version_info__ # noqa
# For backward compatibility as some extensions expect it...
from .extensions import Extension # noqa
__all__ = ['Markdown', 'markdown', 'markdownFromFile']

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"""
Python Markdown
A Python implementation of John Gruber's Markdown.
Documentation: https://python-markdown.github.io/
GitHub: https://github.com/Python-Markdown/markdown/
PyPI: https://pypi.org/project/Markdown/
Started by Manfred Stienstra (http://www.dwerg.net/).
Maintained for a few years by Yuri Takhteyev (http://www.freewisdom.org).
Currently maintained by Waylan Limberg (https://github.com/waylan),
Dmitry Shachnev (https://github.com/mitya57) and Isaac Muse (https://github.com/facelessuser).
Copyright 2007-2018 The Python Markdown Project (v. 1.7 and later)
Copyright 2004, 2005, 2006 Yuri Takhteyev (v. 0.2-1.6b)
Copyright 2004 Manfred Stienstra (the original version)
License: BSD (see LICENSE.md for details).
"""
import sys
import optparse
import codecs
import warnings
import markdown
try:
# We use `unsafe_load` because users may need to pass in actual Python
# objects. As this is only available from the CLI, the user has much
# worse problems if an attacker can use this as an attach vector.
from yaml import unsafe_load as yaml_load
except ImportError: # pragma: no cover
try:
# Fall back to PyYAML <5.1
from yaml import load as yaml_load
except ImportError:
# Fall back to JSON
from json import load as yaml_load
import logging
from logging import DEBUG, WARNING, CRITICAL
logger = logging.getLogger('MARKDOWN')
def parse_options(args=None, values=None):
"""
Define and parse `optparse` options for command-line usage.
"""
usage = """%prog [options] [INPUTFILE]
(STDIN is assumed if no INPUTFILE is given)"""
desc = "A Python implementation of John Gruber's Markdown. " \
"https://Python-Markdown.github.io/"
ver = "%%prog %s" % markdown.__version__
parser = optparse.OptionParser(usage=usage, description=desc, version=ver)
parser.add_option("-f", "--file", dest="filename", default=None,
help="Write output to OUTPUT_FILE. Defaults to STDOUT.",
metavar="OUTPUT_FILE")
parser.add_option("-e", "--encoding", dest="encoding",
help="Encoding for input and output files.",)
parser.add_option("-o", "--output_format", dest="output_format",
default='xhtml', metavar="OUTPUT_FORMAT",
help="Use output format 'xhtml' (default) or 'html'.")
parser.add_option("-n", "--no_lazy_ol", dest="lazy_ol",
action='store_false', default=True,
help="Observe number of first item of ordered lists.")
parser.add_option("-x", "--extension", action="append", dest="extensions",
help="Load extension EXTENSION.", metavar="EXTENSION")
parser.add_option("-c", "--extension_configs",
dest="configfile", default=None,
help="Read extension configurations from CONFIG_FILE. "
"CONFIG_FILE must be of JSON or YAML format. YAML "
"format requires that a python YAML library be "
"installed. The parsed JSON or YAML must result in a "
"python dictionary which would be accepted by the "
"'extension_configs' keyword on the markdown.Markdown "
"class. The extensions must also be loaded with the "
"`--extension` option.",
metavar="CONFIG_FILE")
parser.add_option("-q", "--quiet", default=CRITICAL,
action="store_const", const=CRITICAL+10, dest="verbose",
help="Suppress all warnings.")
parser.add_option("-v", "--verbose",
action="store_const", const=WARNING, dest="verbose",
help="Print all warnings.")
parser.add_option("--noisy",
action="store_const", const=DEBUG, dest="verbose",
help="Print debug messages.")
(options, args) = parser.parse_args(args, values)
if len(args) == 0:
input_file = None
else:
input_file = args[0]
if not options.extensions:
options.extensions = []
extension_configs = {}
if options.configfile:
with codecs.open(
options.configfile, mode="r", encoding=options.encoding
) as fp:
try:
extension_configs = yaml_load(fp)
except Exception as e:
message = "Failed parsing extension config file: %s" % \
options.configfile
e.args = (message,) + e.args[1:]
raise
opts = {
'input': input_file,
'output': options.filename,
'extensions': options.extensions,
'extension_configs': extension_configs,
'encoding': options.encoding,
'output_format': options.output_format,
'lazy_ol': options.lazy_ol
}
return opts, options.verbose
def run(): # pragma: no cover
"""Run Markdown from the command line."""
# Parse options and adjust logging level if necessary
options, logging_level = parse_options()
if not options:
sys.exit(2)
logger.setLevel(logging_level)
console_handler = logging.StreamHandler()
logger.addHandler(console_handler)
if logging_level <= WARNING:
# Ensure deprecation warnings get displayed
warnings.filterwarnings('default')
logging.captureWarnings(True)
warn_logger = logging.getLogger('py.warnings')
warn_logger.addHandler(console_handler)
# Run
markdown.markdownFromFile(**options)
if __name__ == '__main__': # pragma: no cover
# Support running module as a command line command.
# python -m markdown [options] [args]
run()

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"""
Python Markdown
A Python implementation of John Gruber's Markdown.
Documentation: https://python-markdown.github.io/
GitHub: https://github.com/Python-Markdown/markdown/
PyPI: https://pypi.org/project/Markdown/
Started by Manfred Stienstra (http://www.dwerg.net/).
Maintained for a few years by Yuri Takhteyev (http://www.freewisdom.org).
Currently maintained by Waylan Limberg (https://github.com/waylan),
Dmitry Shachnev (https://github.com/mitya57) and Isaac Muse (https://github.com/facelessuser).
Copyright 2007-2018 The Python Markdown Project (v. 1.7 and later)
Copyright 2004, 2005, 2006 Yuri Takhteyev (v. 0.2-1.6b)
Copyright 2004 Manfred Stienstra (the original version)
License: BSD (see LICENSE.md for details).
"""
# __version_info__ format:
# (major, minor, patch, dev/alpha/beta/rc/final, #)
# (1, 1, 2, 'dev', 0) => "1.1.2.dev0"
# (1, 1, 2, 'alpha', 1) => "1.1.2a1"
# (1, 2, 0, 'beta', 2) => "1.2b2"
# (1, 2, 0, 'rc', 4) => "1.2rc4"
# (1, 2, 0, 'final', 0) => "1.2"
__version_info__ = (3, 4, 4, 'final', 0)
def _get_version(version_info):
" Returns a PEP 440-compliant version number from version_info. "
assert len(version_info) == 5
assert version_info[3] in ('dev', 'alpha', 'beta', 'rc', 'final')
parts = 2 if version_info[2] == 0 else 3
v = '.'.join(map(str, version_info[:parts]))
if version_info[3] == 'dev':
v += '.dev' + str(version_info[4])
elif version_info[3] != 'final':
mapping = {'alpha': 'a', 'beta': 'b', 'rc': 'rc'}
v += mapping[version_info[3]] + str(version_info[4])
return v
__version__ = _get_version(__version_info__)

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"""
Python Markdown
A Python implementation of John Gruber's Markdown.
Documentation: https://python-markdown.github.io/
GitHub: https://github.com/Python-Markdown/markdown/
PyPI: https://pypi.org/project/Markdown/
Started by Manfred Stienstra (http://www.dwerg.net/).
Maintained for a few years by Yuri Takhteyev (http://www.freewisdom.org).
Currently maintained by Waylan Limberg (https://github.com/waylan),
Dmitry Shachnev (https://github.com/mitya57) and Isaac Muse (https://github.com/facelessuser).
Copyright 2007-2018 The Python Markdown Project (v. 1.7 and later)
Copyright 2004, 2005, 2006 Yuri Takhteyev (v. 0.2-1.6b)
Copyright 2004 Manfred Stienstra (the original version)
License: BSD (see LICENSE.md for details).
"""
import xml.etree.ElementTree as etree
from . import util
class State(list):
""" Track the current and nested state of the parser.
This utility class is used to track the state of the `BlockParser` and
support multiple levels if nesting. It's just a simple API wrapped around
a list. Each time a state is set, that state is appended to the end of the
list. Each time a state is reset, that state is removed from the end of
the list.
Therefore, each time a state is set for a nested block, that state must be
reset when we back out of that level of nesting or the state could be
corrupted.
While all the methods of a list object are available, only the three
defined below need be used.
"""
def set(self, state):
""" Set a new state. """
self.append(state)
def reset(self):
""" Step back one step in nested state. """
self.pop()
def isstate(self, state):
""" Test that top (current) level is of given state. """
if len(self):
return self[-1] == state
else:
return False
class BlockParser:
""" Parse Markdown blocks into an `ElementTree` object.
A wrapper class that stitches the various `BlockProcessors` together,
looping through them and creating an `ElementTree` object.
"""
def __init__(self, md):
self.blockprocessors = util.Registry()
self.state = State()
self.md = md
def parseDocument(self, lines):
""" Parse a markdown document into an ElementTree.
Given a list of lines, an ElementTree object (not just a parent
Element) is created and the root element is passed to the parser
as the parent. The ElementTree object is returned.
This should only be called on an entire document, not pieces.
"""
# Create an `ElementTree` from the lines
self.root = etree.Element(self.md.doc_tag)
self.parseChunk(self.root, '\n'.join(lines))
return etree.ElementTree(self.root)
def parseChunk(self, parent, text):
""" Parse a chunk of markdown text and attach to given `etree` node.
While the `text` argument is generally assumed to contain multiple
blocks which will be split on blank lines, it could contain only one
block. Generally, this method would be called by extensions when
block parsing is required.
The `parent` `etree` Element passed in is altered in place.
Nothing is returned.
"""
self.parseBlocks(parent, text.split('\n\n'))
def parseBlocks(self, parent, blocks):
""" Process blocks of markdown text and attach to given `etree` node.
Given a list of `blocks`, each `blockprocessor` is stepped through
until there are no blocks left. While an extension could potentially
call this method directly, it's generally expected to be used
internally.
This is a public method as an extension may need to add/alter
additional `BlockProcessors` which call this method to recursively
parse a nested block.
"""
while blocks:
for processor in self.blockprocessors:
if processor.test(parent, blocks[0]):
if processor.run(parent, blocks) is not False:
# run returns True or None
break

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"""
Python Markdown
A Python implementation of John Gruber's Markdown.
Documentation: https://python-markdown.github.io/
GitHub: https://github.com/Python-Markdown/markdown/
PyPI: https://pypi.org/project/Markdown/
Started by Manfred Stienstra (http://www.dwerg.net/).
Maintained for a few years by Yuri Takhteyev (http://www.freewisdom.org).
Currently maintained by Waylan Limberg (https://github.com/waylan),
Dmitry Shachnev (https://github.com/mitya57) and Isaac Muse (https://github.com/facelessuser).
Copyright 2007-2018 The Python Markdown Project (v. 1.7 and later)
Copyright 2004, 2005, 2006 Yuri Takhteyev (v. 0.2-1.6b)
Copyright 2004 Manfred Stienstra (the original version)
License: BSD (see LICENSE.md for details).
CORE MARKDOWN BLOCKPARSER
===========================================================================
This parser handles basic parsing of Markdown blocks. It doesn't concern
itself with inline elements such as **bold** or *italics*, but rather just
catches blocks, lists, quotes, etc.
The `BlockParser` is made up of a bunch of `BlockProcessors`, each handling a
different type of block. Extensions may add/replace/remove `BlockProcessors`
as they need to alter how markdown blocks are parsed.
"""
import logging
import re
import xml.etree.ElementTree as etree
from . import util
from .blockparser import BlockParser
logger = logging.getLogger('MARKDOWN')
def build_block_parser(md, **kwargs):
""" Build the default block parser used by Markdown. """
parser = BlockParser(md)
parser.blockprocessors.register(EmptyBlockProcessor(parser), 'empty', 100)
parser.blockprocessors.register(ListIndentProcessor(parser), 'indent', 90)
parser.blockprocessors.register(CodeBlockProcessor(parser), 'code', 80)
parser.blockprocessors.register(HashHeaderProcessor(parser), 'hashheader', 70)
parser.blockprocessors.register(SetextHeaderProcessor(parser), 'setextheader', 60)
parser.blockprocessors.register(HRProcessor(parser), 'hr', 50)
parser.blockprocessors.register(OListProcessor(parser), 'olist', 40)
parser.blockprocessors.register(UListProcessor(parser), 'ulist', 30)
parser.blockprocessors.register(BlockQuoteProcessor(parser), 'quote', 20)
parser.blockprocessors.register(ReferenceProcessor(parser), 'reference', 15)
parser.blockprocessors.register(ParagraphProcessor(parser), 'paragraph', 10)
return parser
class BlockProcessor:
""" Base class for block processors.
Each subclass will provide the methods below to work with the source and
tree. Each processor will need to define it's own `test` and `run`
methods. The `test` method should return True or False, to indicate
whether the current block should be processed by this processor. If the
test passes, the parser will call the processors `run` method.
"""
def __init__(self, parser):
self.parser = parser
self.tab_length = parser.md.tab_length
def lastChild(self, parent):
""" Return the last child of an `etree` element. """
if len(parent):
return parent[-1]
else:
return None
def detab(self, text, length=None):
""" Remove a tab from the front of each line of the given text. """
if length is None:
length = self.tab_length
newtext = []
lines = text.split('\n')
for line in lines:
if line.startswith(' ' * length):
newtext.append(line[length:])
elif not line.strip():
newtext.append('')
else:
break
return '\n'.join(newtext), '\n'.join(lines[len(newtext):])
def looseDetab(self, text, level=1):
""" Remove a tab from front of lines but allowing dedented lines. """
lines = text.split('\n')
for i in range(len(lines)):
if lines[i].startswith(' '*self.tab_length*level):
lines[i] = lines[i][self.tab_length*level:]
return '\n'.join(lines)
def test(self, parent, block):
""" Test for block type. Must be overridden by subclasses.
As the parser loops through processors, it will call the `test`
method on each to determine if the given block of text is of that
type. This method must return a boolean `True` or `False`. The
actual method of testing is left to the needs of that particular
block type. It could be as simple as `block.startswith(some_string)`
or a complex regular expression. As the block type may be different
depending on the parent of the block (i.e. inside a list), the parent
`etree` element is also provided and may be used as part of the test.
Keywords:
* ``parent``: An `etree` element which will be the parent of the block.
* ``block``: A block of text from the source which has been split at
blank lines.
"""
pass # pragma: no cover
def run(self, parent, blocks):
""" Run processor. Must be overridden by subclasses.
When the parser determines the appropriate type of a block, the parser
will call the corresponding processor's ``run`` method. This method
should parse the individual lines of the block and append them to
the `etree`.
Note that both the ``parent`` and ``etree`` keywords are pointers
to instances of the objects which should be edited in place. Each
processor must make changes to the existing objects as there is no
mechanism to return new/different objects to replace them.
This means that this method should be adding `SubElements` or adding text
to the parent, and should remove (``pop``) or add (``insert``) items to
the list of blocks.
Keywords:
* ``parent``: An `etree` element which is the parent of the current block.
* ``blocks``: A list of all remaining blocks of the document.
"""
pass # pragma: no cover
class ListIndentProcessor(BlockProcessor):
""" Process children of list items.
Example:
* a list item
process this part
or this part
"""
ITEM_TYPES = ['li']
LIST_TYPES = ['ul', 'ol']
def __init__(self, *args):
super().__init__(*args)
self.INDENT_RE = re.compile(r'^(([ ]{%s})+)' % self.tab_length)
def test(self, parent, block):
return block.startswith(' '*self.tab_length) and \
not self.parser.state.isstate('detabbed') and \
(parent.tag in self.ITEM_TYPES or
(len(parent) and parent[-1] is not None and
(parent[-1].tag in self.LIST_TYPES)))
def run(self, parent, blocks):
block = blocks.pop(0)
level, sibling = self.get_level(parent, block)
block = self.looseDetab(block, level)
self.parser.state.set('detabbed')
if parent.tag in self.ITEM_TYPES:
# It's possible that this parent has a `ul` or `ol` child list
# with a member. If that is the case, then that should be the
# parent. This is intended to catch the edge case of an indented
# list whose first member was parsed previous to this point
# see `OListProcessor`
if len(parent) and parent[-1].tag in self.LIST_TYPES:
self.parser.parseBlocks(parent[-1], [block])
else:
# The parent is already a `li`. Just parse the child block.
self.parser.parseBlocks(parent, [block])
elif sibling.tag in self.ITEM_TYPES:
# The sibling is a `li`. Use it as parent.
self.parser.parseBlocks(sibling, [block])
elif len(sibling) and sibling[-1].tag in self.ITEM_TYPES:
# The parent is a list (``ol`` or ``ul``) which has children.
# Assume the last child `li` is the parent of this block.
if sibling[-1].text:
# If the parent `li` has text, that text needs to be moved to a `p`
# The `p` must be 'inserted' at beginning of list in the event
# that other children already exist i.e.; a nested sub-list.
p = etree.Element('p')
p.text = sibling[-1].text
sibling[-1].text = ''
sibling[-1].insert(0, p)
self.parser.parseChunk(sibling[-1], block)
else:
self.create_item(sibling, block)
self.parser.state.reset()
def create_item(self, parent, block):
""" Create a new `li` and parse the block with it as the parent. """
li = etree.SubElement(parent, 'li')
self.parser.parseBlocks(li, [block])
def get_level(self, parent, block):
""" Get level of indent based on list level. """
# Get indent level
m = self.INDENT_RE.match(block)
if m:
indent_level = len(m.group(1))/self.tab_length
else:
indent_level = 0
if self.parser.state.isstate('list'):
# We're in a tight-list - so we already are at correct parent.
level = 1
else:
# We're in a loose-list - so we need to find parent.
level = 0
# Step through children of tree to find matching indent level.
while indent_level > level:
child = self.lastChild(parent)
if (child is not None and
(child.tag in self.LIST_TYPES or child.tag in self.ITEM_TYPES)):
if child.tag in self.LIST_TYPES:
level += 1
parent = child
else:
# No more child levels. If we're short of `indent_level`,
# we have a code block. So we stop here.
break
return level, parent
class CodeBlockProcessor(BlockProcessor):
""" Process code blocks. """
def test(self, parent, block):
return block.startswith(' '*self.tab_length)
def run(self, parent, blocks):
sibling = self.lastChild(parent)
block = blocks.pop(0)
theRest = ''
if (sibling is not None and sibling.tag == "pre" and
len(sibling) and sibling[0].tag == "code"):
# The previous block was a code block. As blank lines do not start
# new code blocks, append this block to the previous, adding back
# line breaks removed from the split into a list.
code = sibling[0]
block, theRest = self.detab(block)
code.text = util.AtomicString(
'{}\n{}\n'.format(code.text, util.code_escape(block.rstrip()))
)
else:
# This is a new code block. Create the elements and insert text.
pre = etree.SubElement(parent, 'pre')
code = etree.SubElement(pre, 'code')
block, theRest = self.detab(block)
code.text = util.AtomicString('%s\n' % util.code_escape(block.rstrip()))
if theRest:
# This block contained unindented line(s) after the first indented
# line. Insert these lines as the first block of the master blocks
# list for future processing.
blocks.insert(0, theRest)
class BlockQuoteProcessor(BlockProcessor):
RE = re.compile(r'(^|\n)[ ]{0,3}>[ ]?(.*)')
def test(self, parent, block):
return bool(self.RE.search(block)) and not util.nearing_recursion_limit()
def run(self, parent, blocks):
block = blocks.pop(0)
m = self.RE.search(block)
if m:
before = block[:m.start()] # Lines before blockquote
# Pass lines before blockquote in recursively for parsing first.
self.parser.parseBlocks(parent, [before])
# Remove ``> `` from beginning of each line.
block = '\n'.join(
[self.clean(line) for line in block[m.start():].split('\n')]
)
sibling = self.lastChild(parent)
if sibling is not None and sibling.tag == "blockquote":
# Previous block was a blockquote so set that as this blocks parent
quote = sibling
else:
# This is a new blockquote. Create a new parent element.
quote = etree.SubElement(parent, 'blockquote')
# Recursively parse block with blockquote as parent.
# change parser state so blockquotes embedded in lists use `p` tags
self.parser.state.set('blockquote')
self.parser.parseChunk(quote, block)
self.parser.state.reset()
def clean(self, line):
""" Remove ``>`` from beginning of a line. """
m = self.RE.match(line)
if line.strip() == ">":
return ""
elif m:
return m.group(2)
else:
return line
class OListProcessor(BlockProcessor):
""" Process ordered list blocks. """
TAG = 'ol'
# The integer (python string) with which the lists starts (default=1)
# Example: If list is initialized as: `3. Item`
# The `ol` tag will get `starts="3"` attribute
STARTSWITH = '1'
# Lazy `ol` - ignore `startswith`
LAZY_OL = True
# List of allowed sibling tags.
SIBLING_TAGS = ['ol', 'ul']
def __init__(self, parser):
super().__init__(parser)
# Detect an item (``1. item``). ``group(1)`` contains contents of item.
self.RE = re.compile(r'^[ ]{0,%d}\d+\.[ ]+(.*)' % (self.tab_length - 1))
# Detect items on secondary lines. they can be of either list type.
self.CHILD_RE = re.compile(r'^[ ]{0,%d}((\d+\.)|[*+-])[ ]+(.*)' %
(self.tab_length - 1))
# Detect indented (nested) items of either type
self.INDENT_RE = re.compile(r'^[ ]{%d,%d}((\d+\.)|[*+-])[ ]+.*' %
(self.tab_length, self.tab_length * 2 - 1))
def test(self, parent, block):
return bool(self.RE.match(block))
def run(self, parent, blocks):
# Check for multiple items in one block.
items = self.get_items(blocks.pop(0))
sibling = self.lastChild(parent)
if sibling is not None and sibling.tag in self.SIBLING_TAGS:
# Previous block was a list item, so set that as parent
lst = sibling
# make sure previous item is in a `p` - if the item has text,
# then it isn't in a `p`
if lst[-1].text:
# since it's possible there are other children for this
# sibling, we can't just `SubElement` the `p`, we need to
# insert it as the first item.
p = etree.Element('p')
p.text = lst[-1].text
lst[-1].text = ''
lst[-1].insert(0, p)
# if the last item has a tail, then the tail needs to be put in a `p`
# likely only when a header is not followed by a blank line
lch = self.lastChild(lst[-1])
if lch is not None and lch.tail:
p = etree.SubElement(lst[-1], 'p')
p.text = lch.tail.lstrip()
lch.tail = ''
# parse first block differently as it gets wrapped in a `p`.
li = etree.SubElement(lst, 'li')
self.parser.state.set('looselist')
firstitem = items.pop(0)
self.parser.parseBlocks(li, [firstitem])
self.parser.state.reset()
elif parent.tag in ['ol', 'ul']:
# this catches the edge case of a multi-item indented list whose
# first item is in a blank parent-list item:
# * * subitem1
# * subitem2
# see also `ListIndentProcessor`
lst = parent
else:
# This is a new list so create parent with appropriate tag.
lst = etree.SubElement(parent, self.TAG)
# Check if a custom start integer is set
if not self.LAZY_OL and self.STARTSWITH != '1':
lst.attrib['start'] = self.STARTSWITH
self.parser.state.set('list')
# Loop through items in block, recursively parsing each with the
# appropriate parent.
for item in items:
if item.startswith(' '*self.tab_length):
# Item is indented. Parse with last item as parent
self.parser.parseBlocks(lst[-1], [item])
else:
# New item. Create `li` and parse with it as parent
li = etree.SubElement(lst, 'li')
self.parser.parseBlocks(li, [item])
self.parser.state.reset()
def get_items(self, block):
""" Break a block into list items. """
items = []
for line in block.split('\n'):
m = self.CHILD_RE.match(line)
if m:
# This is a new list item
# Check first item for the start index
if not items and self.TAG == 'ol':
# Detect the integer value of first list item
INTEGER_RE = re.compile(r'(\d+)')
self.STARTSWITH = INTEGER_RE.match(m.group(1)).group()
# Append to the list
items.append(m.group(3))
elif self.INDENT_RE.match(line):
# This is an indented (possibly nested) item.
if items[-1].startswith(' '*self.tab_length):
# Previous item was indented. Append to that item.
items[-1] = '{}\n{}'.format(items[-1], line)
else:
items.append(line)
else:
# This is another line of previous item. Append to that item.
items[-1] = '{}\n{}'.format(items[-1], line)
return items
class UListProcessor(OListProcessor):
""" Process unordered list blocks. """
TAG = 'ul'
def __init__(self, parser):
super().__init__(parser)
# Detect an item (``1. item``). ``group(1)`` contains contents of item.
self.RE = re.compile(r'^[ ]{0,%d}[*+-][ ]+(.*)' % (self.tab_length - 1))
class HashHeaderProcessor(BlockProcessor):
""" Process Hash Headers. """
# Detect a header at start of any line in block
RE = re.compile(r'(?:^|\n)(?P<level>#{1,6})(?P<header>(?:\\.|[^\\])*?)#*(?:\n|$)')
def test(self, parent, block):
return bool(self.RE.search(block))
def run(self, parent, blocks):
block = blocks.pop(0)
m = self.RE.search(block)
if m:
before = block[:m.start()] # All lines before header
after = block[m.end():] # All lines after header
if before:
# As the header was not the first line of the block and the
# lines before the header must be parsed first,
# recursively parse this lines as a block.
self.parser.parseBlocks(parent, [before])
# Create header using named groups from RE
h = etree.SubElement(parent, 'h%d' % len(m.group('level')))
h.text = m.group('header').strip()
if after:
# Insert remaining lines as first block for future parsing.
blocks.insert(0, after)
else: # pragma: no cover
# This should never happen, but just in case...
logger.warn("We've got a problem header: %r" % block)
class SetextHeaderProcessor(BlockProcessor):
""" Process Setext-style Headers. """
# Detect Setext-style header. Must be first 2 lines of block.
RE = re.compile(r'^.*?\n[=-]+[ ]*(\n|$)', re.MULTILINE)
def test(self, parent, block):
return bool(self.RE.match(block))
def run(self, parent, blocks):
lines = blocks.pop(0).split('\n')
# Determine level. ``=`` is 1 and ``-`` is 2.
if lines[1].startswith('='):
level = 1
else:
level = 2
h = etree.SubElement(parent, 'h%d' % level)
h.text = lines[0].strip()
if len(lines) > 2:
# Block contains additional lines. Add to master blocks for later.
blocks.insert(0, '\n'.join(lines[2:]))
class HRProcessor(BlockProcessor):
""" Process Horizontal Rules. """
# Python's `re` module doesn't officially support atomic grouping. However you can fake it.
# See https://stackoverflow.com/a/13577411/866026
RE = r'^[ ]{0,3}(?=(?P<atomicgroup>(-+[ ]{0,2}){3,}|(_+[ ]{0,2}){3,}|(\*+[ ]{0,2}){3,}))(?P=atomicgroup)[ ]*$'
# Detect hr on any line of a block.
SEARCH_RE = re.compile(RE, re.MULTILINE)
def test(self, parent, block):
m = self.SEARCH_RE.search(block)
if m:
# Save match object on class instance so we can use it later.
self.match = m
return True
return False
def run(self, parent, blocks):
block = blocks.pop(0)
match = self.match
# Check for lines in block before `hr`.
prelines = block[:match.start()].rstrip('\n')
if prelines:
# Recursively parse lines before `hr` so they get parsed first.
self.parser.parseBlocks(parent, [prelines])
# create hr
etree.SubElement(parent, 'hr')
# check for lines in block after `hr`.
postlines = block[match.end():].lstrip('\n')
if postlines:
# Add lines after `hr` to master blocks for later parsing.
blocks.insert(0, postlines)
class EmptyBlockProcessor(BlockProcessor):
""" Process blocks that are empty or start with an empty line. """
def test(self, parent, block):
return not block or block.startswith('\n')
def run(self, parent, blocks):
block = blocks.pop(0)
filler = '\n\n'
if block:
# Starts with empty line
# Only replace a single line.
filler = '\n'
# Save the rest for later.
theRest = block[1:]
if theRest:
# Add remaining lines to master blocks for later.
blocks.insert(0, theRest)
sibling = self.lastChild(parent)
if (sibling is not None and sibling.tag == 'pre' and
len(sibling) and sibling[0].tag == 'code'):
# Last block is a code block. Append to preserve whitespace.
sibling[0].text = util.AtomicString(
'{}{}'.format(sibling[0].text, filler)
)
class ReferenceProcessor(BlockProcessor):
""" Process link references. """
RE = re.compile(
r'^[ ]{0,3}\[([^\[\]]*)\]:[ ]*\n?[ ]*([^\s]+)[ ]*(?:\n[ ]*)?((["\'])(.*)\4[ ]*|\((.*)\)[ ]*)?$', re.MULTILINE
)
def test(self, parent, block):
return True
def run(self, parent, blocks):
block = blocks.pop(0)
m = self.RE.search(block)
if m:
id = m.group(1).strip().lower()
link = m.group(2).lstrip('<').rstrip('>')
title = m.group(5) or m.group(6)
self.parser.md.references[id] = (link, title)
if block[m.end():].strip():
# Add any content after match back to blocks as separate block
blocks.insert(0, block[m.end():].lstrip('\n'))
if block[:m.start()].strip():
# Add any content before match back to blocks as separate block
blocks.insert(0, block[:m.start()].rstrip('\n'))
return True
# No match. Restore block.
blocks.insert(0, block)
return False
class ParagraphProcessor(BlockProcessor):
""" Process Paragraph blocks. """
def test(self, parent, block):
return True
def run(self, parent, blocks):
block = blocks.pop(0)
if block.strip():
# Not a blank block. Add to parent, otherwise throw it away.
if self.parser.state.isstate('list'):
# The parent is a tight-list.
#
# Check for any children. This will likely only happen in a
# tight-list when a header isn't followed by a blank line.
# For example:
#
# * # Header
# Line 2 of list item - not part of header.
sibling = self.lastChild(parent)
if sibling is not None:
# Insert after sibling.
if sibling.tail:
sibling.tail = '{}\n{}'.format(sibling.tail, block)
else:
sibling.tail = '\n%s' % block
else:
# Append to parent.text
if parent.text:
parent.text = '{}\n{}'.format(parent.text, block)
else:
parent.text = block.lstrip()
else:
# Create a regular paragraph
p = etree.SubElement(parent, 'p')
p.text = block.lstrip()

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"""
Python Markdown
A Python implementation of John Gruber's Markdown.
Documentation: https://python-markdown.github.io/
GitHub: https://github.com/Python-Markdown/markdown/
PyPI: https://pypi.org/project/Markdown/
Started by Manfred Stienstra (http://www.dwerg.net/).
Maintained for a few years by Yuri Takhteyev (http://www.freewisdom.org).
Currently maintained by Waylan Limberg (https://github.com/waylan),
Dmitry Shachnev (https://github.com/mitya57) and Isaac Muse (https://github.com/facelessuser).
Copyright 2007-2018 The Python Markdown Project (v. 1.7 and later)
Copyright 2004, 2005, 2006 Yuri Takhteyev (v. 0.2-1.6b)
Copyright 2004 Manfred Stienstra (the original version)
License: BSD (see LICENSE.md for details).
"""
import codecs
import sys
import logging
import importlib
from . import util
from .preprocessors import build_preprocessors
from .blockprocessors import build_block_parser
from .treeprocessors import build_treeprocessors
from .inlinepatterns import build_inlinepatterns
from .postprocessors import build_postprocessors
from .extensions import Extension
from .serializers import to_html_string, to_xhtml_string
from .util import BLOCK_LEVEL_ELEMENTS
__all__ = ['Markdown', 'markdown', 'markdownFromFile']
logger = logging.getLogger('MARKDOWN')
class Markdown:
"""Convert Markdown to HTML."""
doc_tag = "div" # Element used to wrap document - later removed
output_formats = {
'html': to_html_string,
'xhtml': to_xhtml_string,
}
def __init__(self, **kwargs):
"""
Creates a new Markdown instance.
Keyword arguments:
* `extensions`: A list of extensions.
If an item is an instance of a subclass of `markdown.extension.Extension`, the instance will be used
as-is. If an item is of type string, first an entry point will be loaded. If that fails, the string is
assumed to use Python dot notation (`path.to.module:ClassName`) to load a `markdown.Extension` subclass. If
no class is specified, then a `makeExtension` function is called within the specified module.
* `extension_configs`: Configuration settings for extensions.
* `output_format`: Format of output. Supported formats are:
* `xhtml`: Outputs XHTML style tags. Default.
* `html`: Outputs HTML style tags.
* `tab_length`: Length of tabs in the source. Default: 4
"""
self.tab_length = kwargs.get('tab_length', 4)
self.ESCAPED_CHARS = ['\\', '`', '*', '_', '{', '}', '[', ']',
'(', ')', '>', '#', '+', '-', '.', '!']
self.block_level_elements = BLOCK_LEVEL_ELEMENTS.copy()
self.registeredExtensions = []
self.docType = ""
self.stripTopLevelTags = True
self.build_parser()
self.references = {}
self.htmlStash = util.HtmlStash()
self.registerExtensions(extensions=kwargs.get('extensions', []),
configs=kwargs.get('extension_configs', {}))
self.set_output_format(kwargs.get('output_format', 'xhtml'))
self.reset()
def build_parser(self):
""" Build the parser from the various parts. """
self.preprocessors = build_preprocessors(self)
self.parser = build_block_parser(self)
self.inlinePatterns = build_inlinepatterns(self)
self.treeprocessors = build_treeprocessors(self)
self.postprocessors = build_postprocessors(self)
return self
def registerExtensions(self, extensions, configs):
"""
Register extensions with this instance of Markdown.
Keyword arguments:
* `extensions`: A list of extensions, which can either
be strings or objects.
* `configs`: A dictionary mapping extension names to `configs` options.
"""
for ext in extensions:
if isinstance(ext, str):
ext = self.build_extension(ext, configs.get(ext, {}))
if isinstance(ext, Extension):
ext.extendMarkdown(self)
logger.debug(
'Successfully loaded extension "%s.%s".'
% (ext.__class__.__module__, ext.__class__.__name__)
)
elif ext is not None:
raise TypeError(
'Extension "{}.{}" must be of type: "{}.{}"'.format(
ext.__class__.__module__, ext.__class__.__name__,
Extension.__module__, Extension.__name__
)
)
return self
def build_extension(self, ext_name, configs):
"""
Build extension from a string name, then return an instance.
First attempt to load an entry point. The string name must be registered as an entry point in the
`markdown.extensions` group which points to a subclass of the `markdown.extensions.Extension` class.
If multiple distributions have registered the same name, the first one found is returned.
If no entry point is found, assume dot notation (`path.to.module:ClassName`). Load the specified class and
return an instance. If no class is specified, import the module and call a `makeExtension` function and return
the `Extension` instance returned by that function.
"""
configs = dict(configs)
entry_points = [ep for ep in util.get_installed_extensions() if ep.name == ext_name]
if entry_points:
ext = entry_points[0].load()
return ext(**configs)
# Get class name (if provided): `path.to.module:ClassName`
ext_name, class_name = ext_name.split(':', 1) if ':' in ext_name else (ext_name, '')
try:
module = importlib.import_module(ext_name)
logger.debug(
'Successfully imported extension module "%s".' % ext_name
)
except ImportError as e:
message = 'Failed loading extension "%s".' % ext_name
e.args = (message,) + e.args[1:]
raise
if class_name:
# Load given class name from module.
return getattr(module, class_name)(**configs)
else:
# Expect `makeExtension()` function to return a class.
try:
return module.makeExtension(**configs)
except AttributeError as e:
message = e.args[0]
message = "Failed to initiate extension " \
"'%s': %s" % (ext_name, message)
e.args = (message,) + e.args[1:]
raise
def registerExtension(self, extension):
""" This gets called by the extension """
self.registeredExtensions.append(extension)
return self
def reset(self):
"""
Resets all state variables so that we can start with a new text.
"""
self.htmlStash.reset()
self.references.clear()
for extension in self.registeredExtensions:
if hasattr(extension, 'reset'):
extension.reset()
return self
def set_output_format(self, format):
""" Set the output format for the class instance. """
self.output_format = format.lower().rstrip('145') # ignore number
try:
self.serializer = self.output_formats[self.output_format]
except KeyError as e:
valid_formats = list(self.output_formats.keys())
valid_formats.sort()
message = 'Invalid Output Format: "%s". Use one of %s.' \
% (self.output_format,
'"' + '", "'.join(valid_formats) + '"')
e.args = (message,) + e.args[1:]
raise
return self
def is_block_level(self, tag):
"""Check if the tag is a block level HTML tag."""
if isinstance(tag, str):
return tag.lower().rstrip('/') in self.block_level_elements
# Some ElementTree tags are not strings, so return False.
return False
def convert(self, source):
"""
Convert markdown to serialized XHTML or HTML.
Keyword arguments:
* `source`: Source text as a Unicode string.
Markdown processing takes place in five steps:
1. A bunch of `preprocessors` munge the input text.
2. `BlockParser()` parses the high-level structural elements of the
pre-processed text into an `ElementTree`.
3. A bunch of `treeprocessors` are run against the `ElementTree`. One
such `treeprocessor` runs `InlinePatterns` against the `ElementTree`,
detecting inline markup.
4. Some post-processors are run against the text after the `ElementTree`
has been serialized into text.
5. The output is written to a string.
"""
# Fix up the source text
if not source.strip():
return '' # a blank Unicode string
try:
source = str(source)
except UnicodeDecodeError as e: # pragma: no cover
# Customize error message while maintaining original traceback
e.reason += '. -- Note: Markdown only accepts Unicode input!'
raise
# Split into lines and run the line preprocessors.
self.lines = source.split("\n")
for prep in self.preprocessors:
self.lines = prep.run(self.lines)
# Parse the high-level elements.
root = self.parser.parseDocument(self.lines).getroot()
# Run the tree-processors
for treeprocessor in self.treeprocessors:
newRoot = treeprocessor.run(root)
if newRoot is not None:
root = newRoot
# Serialize _properly_. Strip top-level tags.
output = self.serializer(root)
if self.stripTopLevelTags:
try:
start = output.index(
'<%s>' % self.doc_tag) + len(self.doc_tag) + 2
end = output.rindex('</%s>' % self.doc_tag)
output = output[start:end].strip()
except ValueError as e: # pragma: no cover
if output.strip().endswith('<%s />' % self.doc_tag):
# We have an empty document
output = ''
else:
# We have a serious problem
raise ValueError('Markdown failed to strip top-level '
'tags. Document=%r' % output.strip()) from e
# Run the text post-processors
for pp in self.postprocessors:
output = pp.run(output)
return output.strip()
def convertFile(self, input=None, output=None, encoding=None):
"""Converts a markdown file and returns the HTML as a Unicode string.
Decodes the file using the provided encoding (defaults to `utf-8`),
passes the file content to markdown, and outputs the html to either
the provided stream or the file with provided name, using the same
encoding as the source file. The `xmlcharrefreplace` error handler is
used when encoding the output.
**Note:** This is the only place that decoding and encoding of Unicode
takes place in Python-Markdown. (All other code is Unicode-in /
Unicode-out.)
Keyword arguments:
* `input`: File object or path. Reads from `stdin` if `None`.
* `output`: File object or path. Writes to `stdout` if `None`.
* `encoding`: Encoding of input and output files. Defaults to `utf-8`.
"""
encoding = encoding or "utf-8"
# Read the source
if input:
if isinstance(input, str):
input_file = codecs.open(input, mode="r", encoding=encoding)
else:
input_file = codecs.getreader(encoding)(input)
text = input_file.read()
input_file.close()
else:
text = sys.stdin.read()
if not isinstance(text, str): # pragma: no cover
text = text.decode(encoding)
text = text.lstrip('\ufeff') # remove the byte-order mark
# Convert
html = self.convert(text)
# Write to file or stdout
if output:
if isinstance(output, str):
output_file = codecs.open(output, "w",
encoding=encoding,
errors="xmlcharrefreplace")
output_file.write(html)
output_file.close()
else:
writer = codecs.getwriter(encoding)
output_file = writer(output, errors="xmlcharrefreplace")
output_file.write(html)
# Don't close here. User may want to write more.
else:
# Encode manually and write bytes to stdout.
html = html.encode(encoding, "xmlcharrefreplace")
try:
# Write bytes directly to buffer (Python 3).
sys.stdout.buffer.write(html)
except AttributeError: # pragma: no cover
# Probably Python 2, which works with bytes by default.
sys.stdout.write(html)
return self
"""
EXPORTED FUNCTIONS
=============================================================================
Those are the two functions we really mean to export: `markdown()` and
`markdownFromFile()`.
"""
def markdown(text, **kwargs):
"""Convert a markdown string to HTML and return HTML as a Unicode string.
This is a shortcut function for `Markdown` class to cover the most
basic use case. It initializes an instance of `Markdown`, loads the
necessary extensions and runs the parser on the given text.
Keyword arguments:
* `text`: Markdown formatted text as Unicode or ASCII string.
* Any arguments accepted by the Markdown class.
Returns: An HTML document as a string.
"""
md = Markdown(**kwargs)
return md.convert(text)
def markdownFromFile(**kwargs):
"""Read markdown code from a file and write it to a file or a stream.
This is a shortcut function which initializes an instance of `Markdown`,
and calls the `convertFile` method rather than `convert`.
Keyword arguments:
* `input`: a file name or readable object.
* `output`: a file name or writable object.
* `encoding`: Encoding of input and output.
* Any arguments accepted by the `Markdown` class.
"""
md = Markdown(**kwargs)
md.convertFile(kwargs.get('input', None),
kwargs.get('output', None),
kwargs.get('encoding', None))

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"""
Python Markdown
A Python implementation of John Gruber's Markdown.
Documentation: https://python-markdown.github.io/
GitHub: https://github.com/Python-Markdown/markdown/
PyPI: https://pypi.org/project/Markdown/
Started by Manfred Stienstra (http://www.dwerg.net/).
Maintained for a few years by Yuri Takhteyev (http://www.freewisdom.org).
Currently maintained by Waylan Limberg (https://github.com/waylan),
Dmitry Shachnev (https://github.com/mitya57) and Isaac Muse (https://github.com/facelessuser).
Copyright 2007-2018 The Python Markdown Project (v. 1.7 and later)
Copyright 2004, 2005, 2006 Yuri Takhteyev (v. 0.2-1.6b)
Copyright 2004 Manfred Stienstra (the original version)
License: BSD (see LICENSE.md for details).
"""
from ..util import parseBoolValue
class Extension:
""" Base class for extensions to subclass. """
# Default configuration -- to be overridden by a subclass
# Must be of the following format:
# {
# 'key': ['value', 'description']
# }
# Note that `Extension.setConfig` will raise a `KeyError`
# if a default is not set here.
config = {}
def __init__(self, **kwargs):
""" Initiate Extension and set up configs. """
self.setConfigs(kwargs)
def getConfig(self, key, default=''):
""" Return a setting for the given key or an empty string. """
if key in self.config:
return self.config[key][0]
else:
return default
def getConfigs(self):
""" Return all configs settings as a dict. """
return {key: self.getConfig(key) for key in self.config.keys()}
def getConfigInfo(self):
""" Return all `config` descriptions as a list of tuples. """
return [(key, self.config[key][1]) for key in self.config.keys()]
def setConfig(self, key, value):
""" Set a `config` setting for `key` with the given `value`. """
if isinstance(self.config[key][0], bool):
value = parseBoolValue(value)
if self.config[key][0] is None:
value = parseBoolValue(value, preserve_none=True)
self.config[key][0] = value
def setConfigs(self, items):
""" Set multiple `config` settings given a dict or list of tuples. """
if hasattr(items, 'items'):
# it's a dict
items = items.items()
for key, value in items:
self.setConfig(key, value)
def extendMarkdown(self, md):
"""
Add the various processors and patterns to the Markdown Instance.
This method must be overridden by every extension.
Keyword arguments:
* md: The Markdown instance.
"""
raise NotImplementedError(
'Extension "%s.%s" must define an "extendMarkdown"'
'method.' % (self.__class__.__module__, self.__class__.__name__)
)

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'''
Abbreviation Extension for Python-Markdown
==========================================
This extension adds abbreviation handling to Python-Markdown.
See <https://Python-Markdown.github.io/extensions/abbreviations>
for documentation.
Original code Copyright 2007-2008 [Waylan Limberg](http://achinghead.com/) and
[Seemant Kulleen](http://www.kulleen.org/)
All changes Copyright 2008-2014 The Python Markdown Project
License: [BSD](https://opensource.org/licenses/bsd-license.php)
'''
from . import Extension
from ..blockprocessors import BlockProcessor
from ..inlinepatterns import InlineProcessor
from ..util import AtomicString
import re
import xml.etree.ElementTree as etree
class AbbrExtension(Extension):
""" Abbreviation Extension for Python-Markdown. """
def extendMarkdown(self, md):
""" Insert `AbbrPreprocessor` before `ReferencePreprocessor`. """
md.parser.blockprocessors.register(AbbrPreprocessor(md.parser), 'abbr', 16)
class AbbrPreprocessor(BlockProcessor):
""" Abbreviation Preprocessor - parse text for abbr references. """
RE = re.compile(r'^[*]\[(?P<abbr>[^\]]*)\][ ]?:[ ]*\n?[ ]*(?P<title>.*)$', re.MULTILINE)
def test(self, parent, block):
return True
def run(self, parent, blocks):
'''
Find and remove all Abbreviation references from the text.
Each reference is set as a new `AbbrPattern` in the markdown instance.
'''
block = blocks.pop(0)
m = self.RE.search(block)
if m:
abbr = m.group('abbr').strip()
title = m.group('title').strip()
self.parser.md.inlinePatterns.register(
AbbrInlineProcessor(self._generate_pattern(abbr), title), 'abbr-%s' % abbr, 2
)
if block[m.end():].strip():
# Add any content after match back to blocks as separate block
blocks.insert(0, block[m.end():].lstrip('\n'))
if block[:m.start()].strip():
# Add any content before match back to blocks as separate block
blocks.insert(0, block[:m.start()].rstrip('\n'))
return True
# No match. Restore block.
blocks.insert(0, block)
return False
def _generate_pattern(self, text):
'''
Given a string, returns an regex pattern to match that string.
'HTML' -> r'(?P<abbr>[H][T][M][L])'
Note: we force each char as a literal match (in brackets) as we don't
know what they will be beforehand.
'''
chars = list(text)
for i in range(len(chars)):
chars[i] = r'[%s]' % chars[i]
return r'(?P<abbr>\b%s\b)' % (r''.join(chars))
class AbbrInlineProcessor(InlineProcessor):
""" Abbreviation inline pattern. """
def __init__(self, pattern, title):
super().__init__(pattern)
self.title = title
def handleMatch(self, m, data):
abbr = etree.Element('abbr')
abbr.text = AtomicString(m.group('abbr'))
abbr.set('title', self.title)
return abbr, m.start(0), m.end(0)
def makeExtension(**kwargs): # pragma: no cover
return AbbrExtension(**kwargs)

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"""
Admonition extension for Python-Markdown
========================================
Adds rST-style admonitions. Inspired by [rST][] feature with the same name.
[rST]: http://docutils.sourceforge.net/docs/ref/rst/directives.html#specific-admonitions
See <https://Python-Markdown.github.io/extensions/admonition>
for documentation.
Original code Copyright [Tiago Serafim](https://www.tiagoserafim.com/).
All changes Copyright The Python Markdown Project
License: [BSD](https://opensource.org/licenses/bsd-license.php)
"""
from . import Extension
from ..blockprocessors import BlockProcessor
import xml.etree.ElementTree as etree
import re
class AdmonitionExtension(Extension):
""" Admonition extension for Python-Markdown. """
def extendMarkdown(self, md):
""" Add Admonition to Markdown instance. """
md.registerExtension(self)
md.parser.blockprocessors.register(AdmonitionProcessor(md.parser), 'admonition', 105)
class AdmonitionProcessor(BlockProcessor):
CLASSNAME = 'admonition'
CLASSNAME_TITLE = 'admonition-title'
RE = re.compile(r'(?:^|\n)!!! ?([\w\-]+(?: +[\w\-]+)*)(?: +"(.*?)")? *(?:\n|$)')
RE_SPACES = re.compile(' +')
def __init__(self, parser):
"""Initialization."""
super().__init__(parser)
self.current_sibling = None
self.content_indention = 0
def parse_content(self, parent, block):
"""Get sibling admonition.
Retrieve the appropriate sibling element. This can get tricky when
dealing with lists.
"""
old_block = block
the_rest = ''
# We already acquired the block via test
if self.current_sibling is not None:
sibling = self.current_sibling
block, the_rest = self.detab(block, self.content_indent)
self.current_sibling = None
self.content_indent = 0
return sibling, block, the_rest
sibling = self.lastChild(parent)
if sibling is None or sibling.get('class', '').find(self.CLASSNAME) == -1:
sibling = None
else:
# If the last child is a list and the content is sufficiently indented
# to be under it, then the content's sibling is in the list.
last_child = self.lastChild(sibling)
indent = 0
while last_child is not None:
if (
sibling is not None and block.startswith(' ' * self.tab_length * 2) and
last_child is not None and last_child.tag in ('ul', 'ol', 'dl')
):
# The expectation is that we'll find an `<li>` or `<dt>`.
# We should get its last child as well.
sibling = self.lastChild(last_child)
last_child = self.lastChild(sibling) if sibling is not None else None
# Context has been lost at this point, so we must adjust the
# text's indentation level so it will be evaluated correctly
# under the list.
block = block[self.tab_length:]
indent += self.tab_length
else:
last_child = None
if not block.startswith(' ' * self.tab_length):
sibling = None
if sibling is not None:
indent += self.tab_length
block, the_rest = self.detab(old_block, indent)
self.current_sibling = sibling
self.content_indent = indent
return sibling, block, the_rest
def test(self, parent, block):
if self.RE.search(block):
return True
else:
return self.parse_content(parent, block)[0] is not None
def run(self, parent, blocks):
block = blocks.pop(0)
m = self.RE.search(block)
if m:
if m.start() > 0:
self.parser.parseBlocks(parent, [block[:m.start()]])
block = block[m.end():] # removes the first line
block, theRest = self.detab(block)
else:
sibling, block, theRest = self.parse_content(parent, block)
if m:
klass, title = self.get_class_and_title(m)
div = etree.SubElement(parent, 'div')
div.set('class', '{} {}'.format(self.CLASSNAME, klass))
if title:
p = etree.SubElement(div, 'p')
p.text = title
p.set('class', self.CLASSNAME_TITLE)
else:
# Sibling is a list item, but we need to wrap it's content should be wrapped in <p>
if sibling.tag in ('li', 'dd') and sibling.text:
text = sibling.text
sibling.text = ''
p = etree.SubElement(sibling, 'p')
p.text = text
div = sibling
self.parser.parseChunk(div, block)
if theRest:
# This block contained unindented line(s) after the first indented
# line. Insert these lines as the first block of the master blocks
# list for future processing.
blocks.insert(0, theRest)
def get_class_and_title(self, match):
klass, title = match.group(1).lower(), match.group(2)
klass = self.RE_SPACES.sub(' ', klass)
if title is None:
# no title was provided, use the capitalized class name as title
# e.g.: `!!! note` will render
# `<p class="admonition-title">Note</p>`
title = klass.split(' ', 1)[0].capitalize()
elif title == '':
# an explicit blank title should not be rendered
# e.g.: `!!! warning ""` will *not* render `p` with a title
title = None
return klass, title
def makeExtension(**kwargs): # pragma: no cover
return AdmonitionExtension(**kwargs)

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"""
Attribute List Extension for Python-Markdown
============================================
Adds attribute list syntax. Inspired by
[Maruku](http://maruku.rubyforge.org/proposal.html#attribute_lists)'s
feature of the same name.
See <https://Python-Markdown.github.io/extensions/attr_list>
for documentation.
Original code Copyright 2011 [Waylan Limberg](http://achinghead.com/).
All changes Copyright 2011-2014 The Python Markdown Project
License: [BSD](https://opensource.org/licenses/bsd-license.php)
"""
from . import Extension
from ..treeprocessors import Treeprocessor
import re
def _handle_double_quote(s, t):
k, v = t.split('=', 1)
return k, v.strip('"')
def _handle_single_quote(s, t):
k, v = t.split('=', 1)
return k, v.strip("'")
def _handle_key_value(s, t):
return t.split('=', 1)
def _handle_word(s, t):
if t.startswith('.'):
return '.', t[1:]
if t.startswith('#'):
return 'id', t[1:]
return t, t
_scanner = re.Scanner([
(r'[^ =]+=".*?"', _handle_double_quote),
(r"[^ =]+='.*?'", _handle_single_quote),
(r'[^ =]+=[^ =]+', _handle_key_value),
(r'[^ =]+', _handle_word),
(r' ', None)
])
def get_attrs(str):
""" Parse attribute list and return a list of attribute tuples. """
return _scanner.scan(str)[0]
def isheader(elem):
return elem.tag in ['h1', 'h2', 'h3', 'h4', 'h5', 'h6']
class AttrListTreeprocessor(Treeprocessor):
BASE_RE = r'\{\:?[ ]*([^\}\n ][^\}\n]*)[ ]*\}'
HEADER_RE = re.compile(r'[ ]+{}[ ]*$'.format(BASE_RE))
BLOCK_RE = re.compile(r'\n[ ]*{}[ ]*$'.format(BASE_RE))
INLINE_RE = re.compile(r'^{}'.format(BASE_RE))
NAME_RE = re.compile(r'[^A-Z_a-z\u00c0-\u00d6\u00d8-\u00f6\u00f8-\u02ff'
r'\u0370-\u037d\u037f-\u1fff\u200c-\u200d'
r'\u2070-\u218f\u2c00-\u2fef\u3001-\ud7ff'
r'\uf900-\ufdcf\ufdf0-\ufffd'
r'\:\-\.0-9\u00b7\u0300-\u036f\u203f-\u2040]+')
def run(self, doc):
for elem in doc.iter():
if self.md.is_block_level(elem.tag):
# Block level: check for `attrs` on last line of text
RE = self.BLOCK_RE
if isheader(elem) or elem.tag in ['dt', 'td', 'th']:
# header, def-term, or table cell: check for attributes at end of element
RE = self.HEADER_RE
if len(elem) and elem.tag == 'li':
# special case list items. children may include a `ul` or `ol`.
pos = None
# find the `ul` or `ol` position
for i, child in enumerate(elem):
if child.tag in ['ul', 'ol']:
pos = i
break
if pos is None and elem[-1].tail:
# use tail of last child. no `ul` or `ol`.
m = RE.search(elem[-1].tail)
if m:
self.assign_attrs(elem, m.group(1))
elem[-1].tail = elem[-1].tail[:m.start()]
elif pos is not None and pos > 0 and elem[pos-1].tail:
# use tail of last child before `ul` or `ol`
m = RE.search(elem[pos-1].tail)
if m:
self.assign_attrs(elem, m.group(1))
elem[pos-1].tail = elem[pos-1].tail[:m.start()]
elif elem.text:
# use text. `ul` is first child.
m = RE.search(elem.text)
if m:
self.assign_attrs(elem, m.group(1))
elem.text = elem.text[:m.start()]
elif len(elem) and elem[-1].tail:
# has children. Get from tail of last child
m = RE.search(elem[-1].tail)
if m:
self.assign_attrs(elem, m.group(1))
elem[-1].tail = elem[-1].tail[:m.start()]
if isheader(elem):
# clean up trailing #s
elem[-1].tail = elem[-1].tail.rstrip('#').rstrip()
elif elem.text:
# no children. Get from text.
m = RE.search(elem.text)
if m:
self.assign_attrs(elem, m.group(1))
elem.text = elem.text[:m.start()]
if isheader(elem):
# clean up trailing #s
elem.text = elem.text.rstrip('#').rstrip()
else:
# inline: check for `attrs` at start of tail
if elem.tail:
m = self.INLINE_RE.match(elem.tail)
if m:
self.assign_attrs(elem, m.group(1))
elem.tail = elem.tail[m.end():]
def assign_attrs(self, elem, attrs):
""" Assign `attrs` to element. """
for k, v in get_attrs(attrs):
if k == '.':
# add to class
cls = elem.get('class')
if cls:
elem.set('class', '{} {}'.format(cls, v))
else:
elem.set('class', v)
else:
# assign attribute `k` with `v`
elem.set(self.sanitize_name(k), v)
def sanitize_name(self, name):
"""
Sanitize name as 'an XML Name, minus the ":"'.
See https://www.w3.org/TR/REC-xml-names/#NT-NCName
"""
return self.NAME_RE.sub('_', name)
class AttrListExtension(Extension):
def extendMarkdown(self, md):
md.treeprocessors.register(AttrListTreeprocessor(md), 'attr_list', 8)
md.registerExtension(self)
def makeExtension(**kwargs): # pragma: no cover
return AttrListExtension(**kwargs)

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"""
CodeHilite Extension for Python-Markdown
========================================
Adds code/syntax highlighting to standard Python-Markdown code blocks.
See <https://Python-Markdown.github.io/extensions/code_hilite>
for documentation.
Original code Copyright 2006-2008 [Waylan Limberg](http://achinghead.com/).
All changes Copyright 2008-2014 The Python Markdown Project
License: [BSD](https://opensource.org/licenses/bsd-license.php)
"""
from . import Extension
from ..treeprocessors import Treeprocessor
from ..util import parseBoolValue
try: # pragma: no cover
from pygments import highlight
from pygments.lexers import get_lexer_by_name, guess_lexer
from pygments.formatters import get_formatter_by_name
from pygments.util import ClassNotFound
pygments = True
except ImportError: # pragma: no cover
pygments = False
def parse_hl_lines(expr):
"""Support our syntax for emphasizing certain lines of code.
expr should be like '1 2' to emphasize lines 1 and 2 of a code block.
Returns a list of ints, the line numbers to emphasize.
"""
if not expr:
return []
try:
return list(map(int, expr.split()))
except ValueError: # pragma: no cover
return []
# ------------------ The Main CodeHilite Class ----------------------
class CodeHilite:
"""
Determine language of source code, and pass it on to the Pygments highlighter.
Usage:
code = CodeHilite(src=some_code, lang='python')
html = code.hilite()
Arguments:
* `src`: Source string or any object with a `.readline` attribute.
* `lang`: String name of Pygments lexer to use for highlighting. Default: `None`.
* `guess_lang`: Auto-detect which lexer to use. Ignored if `lang` is set to a valid
value. Default: `True`.
* `use_pygments`: Pass code to Pygments for code highlighting. If `False`, the code is
instead wrapped for highlighting by a JavaScript library. Default: `True`.
* `pygments_formatter`: The name of a Pygments formatter or a formatter class used for
highlighting the code blocks. Default: `html`.
* `linenums`: An alias to Pygments `linenos` formatter option. Default: `None`.
* `css_class`: An alias to Pygments `cssclass` formatter option. Default: 'codehilite'.
* `lang_prefix`: Prefix prepended to the language. Default: "language-".
Other Options:
Any other options are accepted and passed on to the lexer and formatter. Therefore,
valid options include any options which are accepted by the `html` formatter or
whichever lexer the code's language uses. Note that most lexers do not have any
options. However, a few have very useful options, such as PHP's `startinline` option.
Any invalid options are ignored without error.
Formatter options: https://pygments.org/docs/formatters/#HtmlFormatter
Lexer Options: https://pygments.org/docs/lexers/
Additionally, when Pygments is enabled, the code's language is passed to the
formatter as an extra option `lang_str`, whose value being `{lang_prefix}{lang}`.
This option has no effect to the Pygments' builtin formatters.
Advanced Usage:
code = CodeHilite(
src = some_code,
lang = 'php',
startinline = True, # Lexer option. Snippet does not start with `<?php`.
linenostart = 42, # Formatter option. Snippet starts on line 42.
hl_lines = [45, 49, 50], # Formatter option. Highlight lines 45, 49, and 50.
linenos = 'inline' # Formatter option. Avoid alignment problems.
)
html = code.hilite()
"""
def __init__(self, src, **options):
self.src = src
self.lang = options.pop('lang', None)
self.guess_lang = options.pop('guess_lang', True)
self.use_pygments = options.pop('use_pygments', True)
self.lang_prefix = options.pop('lang_prefix', 'language-')
self.pygments_formatter = options.pop('pygments_formatter', 'html')
if 'linenos' not in options:
options['linenos'] = options.pop('linenums', None)
if 'cssclass' not in options:
options['cssclass'] = options.pop('css_class', 'codehilite')
if 'wrapcode' not in options:
# Override Pygments default
options['wrapcode'] = True
# Disallow use of `full` option
options['full'] = False
self.options = options
def hilite(self, shebang=True):
"""
Pass code to the [Pygments](https://pygments.org/) highlighter with
optional line numbers. The output should then be styled with CSS to
your liking. No styles are applied by default - only styling hooks
(i.e.: `<span class="k">`).
returns : A string of html.
"""
self.src = self.src.strip('\n')
if self.lang is None and shebang:
self._parseHeader()
if pygments and self.use_pygments:
try:
lexer = get_lexer_by_name(self.lang, **self.options)
except ValueError:
try:
if self.guess_lang:
lexer = guess_lexer(self.src, **self.options)
else:
lexer = get_lexer_by_name('text', **self.options)
except ValueError: # pragma: no cover
lexer = get_lexer_by_name('text', **self.options)
if not self.lang:
# Use the guessed lexer's language instead
self.lang = lexer.aliases[0]
lang_str = f'{self.lang_prefix}{self.lang}'
if isinstance(self.pygments_formatter, str):
try:
formatter = get_formatter_by_name(self.pygments_formatter, **self.options)
except ClassNotFound:
formatter = get_formatter_by_name('html', **self.options)
else:
formatter = self.pygments_formatter(lang_str=lang_str, **self.options)
return highlight(self.src, lexer, formatter)
else:
# just escape and build markup usable by JavaScript highlighting libraries
txt = self.src.replace('&', '&amp;')
txt = txt.replace('<', '&lt;')
txt = txt.replace('>', '&gt;')
txt = txt.replace('"', '&quot;')
classes = []
if self.lang:
classes.append('{}{}'.format(self.lang_prefix, self.lang))
if self.options['linenos']:
classes.append('linenums')
class_str = ''
if classes:
class_str = ' class="{}"'.format(' '.join(classes))
return '<pre class="{}"><code{}>{}\n</code></pre>\n'.format(
self.options['cssclass'],
class_str,
txt
)
def _parseHeader(self):
"""
Determines language of a code block from shebang line and whether the
said line should be removed or left in place. If the shebang line
contains a path (even a single /) then it is assumed to be a real
shebang line and left alone. However, if no path is given
(e.i.: `#!python` or `:::python`) then it is assumed to be a mock shebang
for language identification of a code fragment and removed from the
code block prior to processing for code highlighting. When a mock
shebang (e.i: `#!python`) is found, line numbering is turned on. When
colons are found in place of a shebang (e.i.: `:::python`), line
numbering is left in the current state - off by default.
Also parses optional list of highlight lines, like:
:::python hl_lines="1 3"
"""
import re
# split text into lines
lines = self.src.split("\n")
# pull first line to examine
fl = lines.pop(0)
c = re.compile(r'''
(?:(?:^::+)|(?P<shebang>^[#]!)) # Shebang or 2 or more colons
(?P<path>(?:/\w+)*[/ ])? # Zero or 1 path
(?P<lang>[\w#.+-]*) # The language
\s* # Arbitrary whitespace
# Optional highlight lines, single- or double-quote-delimited
(hl_lines=(?P<quot>"|')(?P<hl_lines>.*?)(?P=quot))?
''', re.VERBOSE)
# search first line for shebang
m = c.search(fl)
if m:
# we have a match
try:
self.lang = m.group('lang').lower()
except IndexError: # pragma: no cover
self.lang = None
if m.group('path'):
# path exists - restore first line
lines.insert(0, fl)
if self.options['linenos'] is None and m.group('shebang'):
# Overridable and Shebang exists - use line numbers
self.options['linenos'] = True
self.options['hl_lines'] = parse_hl_lines(m.group('hl_lines'))
else:
# No match
lines.insert(0, fl)
self.src = "\n".join(lines).strip("\n")
# ------------------ The Markdown Extension -------------------------------
class HiliteTreeprocessor(Treeprocessor):
""" Highlight source code in code blocks. """
def code_unescape(self, text):
"""Unescape code."""
text = text.replace("&lt;", "<")
text = text.replace("&gt;", ">")
# Escaped '&' should be replaced at the end to avoid
# conflicting with < and >.
text = text.replace("&amp;", "&")
return text
def run(self, root):
""" Find code blocks and store in `htmlStash`. """
blocks = root.iter('pre')
for block in blocks:
if len(block) == 1 and block[0].tag == 'code':
local_config = self.config.copy()
code = CodeHilite(
self.code_unescape(block[0].text),
tab_length=self.md.tab_length,
style=local_config.pop('pygments_style', 'default'),
**local_config
)
placeholder = self.md.htmlStash.store(code.hilite())
# Clear code block in `etree` instance
block.clear()
# Change to `p` element which will later
# be removed when inserting raw html
block.tag = 'p'
block.text = placeholder
class CodeHiliteExtension(Extension):
""" Add source code highlighting to markdown code blocks. """
def __init__(self, **kwargs):
# define default configs
self.config = {
'linenums': [None,
"Use lines numbers. True|table|inline=yes, False=no, None=auto"],
'guess_lang': [True,
"Automatic language detection - Default: True"],
'css_class': ["codehilite",
"Set class name for wrapper <div> - "
"Default: codehilite"],
'pygments_style': ['default',
'Pygments HTML Formatter Style '
'(Colorscheme) - Default: default'],
'noclasses': [False,
'Use inline styles instead of CSS classes - '
'Default false'],
'use_pygments': [True,
'Use Pygments to Highlight code blocks. '
'Disable if using a JavaScript library. '
'Default: True'],
'lang_prefix': [
'language-',
'Prefix prepended to the language when use_pygments is false. Default: "language-"'
],
'pygments_formatter': ['html',
'Use a specific formatter for Pygments highlighting.'
'Default: "html"',
],
}
for key, value in kwargs.items():
if key in self.config:
self.setConfig(key, value)
else:
# manually set unknown keywords.
if isinstance(value, str):
try:
# Attempt to parse `str` as a boolean value
value = parseBoolValue(value, preserve_none=True)
except ValueError:
pass # Assume it's not a boolean value. Use as-is.
self.config[key] = [value, '']
def extendMarkdown(self, md):
""" Add `HilitePostprocessor` to Markdown instance. """
hiliter = HiliteTreeprocessor(md)
hiliter.config = self.getConfigs()
md.treeprocessors.register(hiliter, 'hilite', 30)
md.registerExtension(self)
def makeExtension(**kwargs): # pragma: no cover
return CodeHiliteExtension(**kwargs)

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"""
Definition List Extension for Python-Markdown
=============================================
Adds parsing of Definition Lists to Python-Markdown.
See <https://Python-Markdown.github.io/extensions/definition_lists>
for documentation.
Original code Copyright 2008 [Waylan Limberg](http://achinghead.com)
All changes Copyright 2008-2014 The Python Markdown Project
License: [BSD](https://opensource.org/licenses/bsd-license.php)
"""
from . import Extension
from ..blockprocessors import BlockProcessor, ListIndentProcessor
import xml.etree.ElementTree as etree
import re
class DefListProcessor(BlockProcessor):
""" Process Definition Lists. """
RE = re.compile(r'(^|\n)[ ]{0,3}:[ ]{1,3}(.*?)(\n|$)')
NO_INDENT_RE = re.compile(r'^[ ]{0,3}[^ :]')
def test(self, parent, block):
return bool(self.RE.search(block))
def run(self, parent, blocks):
raw_block = blocks.pop(0)
m = self.RE.search(raw_block)
terms = [term.strip() for term in
raw_block[:m.start()].split('\n') if term.strip()]
block = raw_block[m.end():]
no_indent = self.NO_INDENT_RE.match(block)
if no_indent:
d, theRest = (block, None)
else:
d, theRest = self.detab(block)
if d:
d = '{}\n{}'.format(m.group(2), d)
else:
d = m.group(2)
sibling = self.lastChild(parent)
if not terms and sibling is None:
# This is not a definition item. Most likely a paragraph that
# starts with a colon at the beginning of a document or list.
blocks.insert(0, raw_block)
return False
if not terms and sibling.tag == 'p':
# The previous paragraph contains the terms
state = 'looselist'
terms = sibling.text.split('\n')
parent.remove(sibling)
# Acquire new sibling
sibling = self.lastChild(parent)
else:
state = 'list'
if sibling is not None and sibling.tag == 'dl':
# This is another item on an existing list
dl = sibling
if not terms and len(dl) and dl[-1].tag == 'dd' and len(dl[-1]):
state = 'looselist'
else:
# This is a new list
dl = etree.SubElement(parent, 'dl')
# Add terms
for term in terms:
dt = etree.SubElement(dl, 'dt')
dt.text = term
# Add definition
self.parser.state.set(state)
dd = etree.SubElement(dl, 'dd')
self.parser.parseBlocks(dd, [d])
self.parser.state.reset()
if theRest:
blocks.insert(0, theRest)
class DefListIndentProcessor(ListIndentProcessor):
""" Process indented children of definition list items. """
# Definition lists need to be aware of all list types
ITEM_TYPES = ['dd', 'li']
LIST_TYPES = ['dl', 'ol', 'ul']
def create_item(self, parent, block):
""" Create a new `dd` or `li` (depending on parent) and parse the block with it as the parent. """
dd = etree.SubElement(parent, 'dd')
self.parser.parseBlocks(dd, [block])
class DefListExtension(Extension):
""" Add definition lists to Markdown. """
def extendMarkdown(self, md):
""" Add an instance of `DefListProcessor` to `BlockParser`. """
md.parser.blockprocessors.register(DefListIndentProcessor(md.parser), 'defindent', 85)
md.parser.blockprocessors.register(DefListProcessor(md.parser), 'deflist', 25)
def makeExtension(**kwargs): # pragma: no cover
return DefListExtension(**kwargs)

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"""
Python-Markdown Extra Extension
===============================
A compilation of various Python-Markdown extensions that imitates
[PHP Markdown Extra](http://michelf.com/projects/php-markdown/extra/).
Note that each of the individual extensions still need to be available
on your PYTHONPATH. This extension simply wraps them all up as a
convenience so that only one extension needs to be listed when
initiating Markdown. See the documentation for each individual
extension for specifics about that extension.
There may be additional extensions that are distributed with
Python-Markdown that are not included here in Extra. Those extensions
are not part of PHP Markdown Extra, and therefore, not part of
Python-Markdown Extra. If you really would like Extra to include
additional extensions, we suggest creating your own clone of Extra
under a different name. You could also edit the `extensions` global
variable defined below, but be aware that such changes may be lost
when you upgrade to any future version of Python-Markdown.
See <https://Python-Markdown.github.io/extensions/extra>
for documentation.
Copyright The Python Markdown Project
License: [BSD](https://opensource.org/licenses/bsd-license.php)
"""
from . import Extension
extensions = [
'fenced_code',
'footnotes',
'attr_list',
'def_list',
'tables',
'abbr',
'md_in_html'
]
class ExtraExtension(Extension):
""" Add various extensions to Markdown class."""
def __init__(self, **kwargs):
""" `config` is a dumb holder which gets passed to the actual extension later. """
self.config = kwargs
def extendMarkdown(self, md):
""" Register extension instances. """
md.registerExtensions(extensions, self.config)
def makeExtension(**kwargs): # pragma: no cover
return ExtraExtension(**kwargs)

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"""
Fenced Code Extension for Python Markdown
=========================================
This extension adds Fenced Code Blocks to Python-Markdown.
See <https://Python-Markdown.github.io/extensions/fenced_code_blocks>
for documentation.
Original code Copyright 2007-2008 [Waylan Limberg](http://achinghead.com/).
All changes Copyright 2008-2014 The Python Markdown Project
License: [BSD](https://opensource.org/licenses/bsd-license.php)
"""
from textwrap import dedent
from . import Extension
from ..preprocessors import Preprocessor
from .codehilite import CodeHilite, CodeHiliteExtension, parse_hl_lines
from .attr_list import get_attrs, AttrListExtension
from ..util import parseBoolValue
from ..serializers import _escape_attrib_html
import re
class FencedCodeExtension(Extension):
def __init__(self, **kwargs):
self.config = {
'lang_prefix': ['language-', 'Prefix prepended to the language. Default: "language-"']
}
super().__init__(**kwargs)
def extendMarkdown(self, md):
""" Add `FencedBlockPreprocessor` to the Markdown instance. """
md.registerExtension(self)
md.preprocessors.register(FencedBlockPreprocessor(md, self.getConfigs()), 'fenced_code_block', 25)
class FencedBlockPreprocessor(Preprocessor):
FENCED_BLOCK_RE = re.compile(
dedent(r'''
(?P<fence>^(?:~{3,}|`{3,}))[ ]* # opening fence
((\{(?P<attrs>[^\}\n]*)\})| # (optional {attrs} or
(\.?(?P<lang>[\w#.+-]*)[ ]*)? # optional (.)lang
(hl_lines=(?P<quot>"|')(?P<hl_lines>.*?)(?P=quot)[ ]*)?) # optional hl_lines)
\n # newline (end of opening fence)
(?P<code>.*?)(?<=\n) # the code block
(?P=fence)[ ]*$ # closing fence
'''),
re.MULTILINE | re.DOTALL | re.VERBOSE
)
def __init__(self, md, config):
super().__init__(md)
self.config = config
self.checked_for_deps = False
self.codehilite_conf = {}
self.use_attr_list = False
# List of options to convert to boolean values
self.bool_options = [
'linenums',
'guess_lang',
'noclasses',
'use_pygments'
]
def run(self, lines):
""" Match and store Fenced Code Blocks in the `HtmlStash`. """
# Check for dependent extensions
if not self.checked_for_deps:
for ext in self.md.registeredExtensions:
if isinstance(ext, CodeHiliteExtension):
self.codehilite_conf = ext.getConfigs()
if isinstance(ext, AttrListExtension):
self.use_attr_list = True
self.checked_for_deps = True
text = "\n".join(lines)
while 1:
m = self.FENCED_BLOCK_RE.search(text)
if m:
lang, id, classes, config = None, '', [], {}
if m.group('attrs'):
id, classes, config = self.handle_attrs(get_attrs(m.group('attrs')))
if len(classes):
lang = classes.pop(0)
else:
if m.group('lang'):
lang = m.group('lang')
if m.group('hl_lines'):
# Support `hl_lines` outside of `attrs` for backward-compatibility
config['hl_lines'] = parse_hl_lines(m.group('hl_lines'))
# If `config` is not empty, then the `codehighlite` extension
# is enabled, so we call it to highlight the code
if self.codehilite_conf and self.codehilite_conf['use_pygments'] and config.get('use_pygments', True):
local_config = self.codehilite_conf.copy()
local_config.update(config)
# Combine classes with `cssclass`. Ensure `cssclass` is at end
# as Pygments appends a suffix under certain circumstances.
# Ignore ID as Pygments does not offer an option to set it.
if classes:
local_config['css_class'] = '{} {}'.format(
' '.join(classes),
local_config['css_class']
)
highliter = CodeHilite(
m.group('code'),
lang=lang,
style=local_config.pop('pygments_style', 'default'),
**local_config
)
code = highliter.hilite(shebang=False)
else:
id_attr = lang_attr = class_attr = kv_pairs = ''
if lang:
prefix = self.config.get('lang_prefix', 'language-')
lang_attr = f' class="{prefix}{_escape_attrib_html(lang)}"'
if classes:
class_attr = f' class="{_escape_attrib_html(" ".join(classes))}"'
if id:
id_attr = f' id="{_escape_attrib_html(id)}"'
if self.use_attr_list and config and not config.get('use_pygments', False):
# Only assign key/value pairs to code element if `attr_list` extension is enabled, key/value
# pairs were defined on the code block, and the `use_pygments` key was not set to `True`. The
# `use_pygments` key could be either set to `False` or not defined. It is omitted from output.
kv_pairs = ''.join(
f' {k}="{_escape_attrib_html(v)}"' for k, v in config.items() if k != 'use_pygments'
)
code = self._escape(m.group('code'))
code = f'<pre{id_attr}{class_attr}><code{lang_attr}{kv_pairs}>{code}</code></pre>'
placeholder = self.md.htmlStash.store(code)
text = f'{text[:m.start()]}\n{placeholder}\n{text[m.end():]}'
else:
break
return text.split("\n")
def handle_attrs(self, attrs):
""" Return tuple: (id, [list, of, classes], {configs}) """
id = ''
classes = []
configs = {}
for k, v in attrs:
if k == 'id':
id = v
elif k == '.':
classes.append(v)
elif k == 'hl_lines':
configs[k] = parse_hl_lines(v)
elif k in self.bool_options:
configs[k] = parseBoolValue(v, fail_on_errors=False, preserve_none=True)
else:
configs[k] = v
return id, classes, configs
def _escape(self, txt):
""" basic html escaping """
txt = txt.replace('&', '&amp;')
txt = txt.replace('<', '&lt;')
txt = txt.replace('>', '&gt;')
txt = txt.replace('"', '&quot;')
return txt
def makeExtension(**kwargs): # pragma: no cover
return FencedCodeExtension(**kwargs)

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"""
Footnotes Extension for Python-Markdown
=======================================
Adds footnote handling to Python-Markdown.
See <https://Python-Markdown.github.io/extensions/footnotes>
for documentation.
Copyright The Python Markdown Project
License: [BSD](https://opensource.org/licenses/bsd-license.php)
"""
from . import Extension
from ..blockprocessors import BlockProcessor
from ..inlinepatterns import InlineProcessor
from ..treeprocessors import Treeprocessor
from ..postprocessors import Postprocessor
from .. import util
from collections import OrderedDict
import re
import copy
import xml.etree.ElementTree as etree
FN_BACKLINK_TEXT = util.STX + "zz1337820767766393qq" + util.ETX
NBSP_PLACEHOLDER = util.STX + "qq3936677670287331zz" + util.ETX
RE_REF_ID = re.compile(r'(fnref)(\d+)')
class FootnoteExtension(Extension):
""" Footnote Extension. """
def __init__(self, **kwargs):
""" Setup configs. """
self.config = {
'PLACE_MARKER':
["///Footnotes Go Here///",
"The text string that marks where the footnotes go"],
'UNIQUE_IDS':
[False,
"Avoid name collisions across "
"multiple calls to reset()."],
"BACKLINK_TEXT":
["&#8617;",
"The text string that links from the footnote "
"to the reader's place."],
"SUPERSCRIPT_TEXT":
["{}",
"The text string that links from the reader's place "
"to the footnote."],
"BACKLINK_TITLE":
["Jump back to footnote %d in the text",
"The text string used for the title HTML attribute "
"of the backlink. %d will be replaced by the "
"footnote number."],
"SEPARATOR":
[":",
"Footnote separator."]
}
super().__init__(**kwargs)
# In multiple invocations, emit links that don't get tangled.
self.unique_prefix = 0
self.found_refs = {}
self.used_refs = set()
self.reset()
def extendMarkdown(self, md):
""" Add pieces to Markdown. """
md.registerExtension(self)
self.parser = md.parser
self.md = md
# Insert a `blockprocessor` before `ReferencePreprocessor`
md.parser.blockprocessors.register(FootnoteBlockProcessor(self), 'footnote', 17)
# Insert an inline pattern before `ImageReferencePattern`
FOOTNOTE_RE = r'\[\^([^\]]*)\]' # blah blah [^1] blah
md.inlinePatterns.register(FootnoteInlineProcessor(FOOTNOTE_RE, self), 'footnote', 175)
# Insert a tree-processor that would actually add the footnote div
# This must be before all other tree-processors (i.e., `inline` and
# `codehilite`) so they can run on the the contents of the div.
md.treeprocessors.register(FootnoteTreeprocessor(self), 'footnote', 50)
# Insert a tree-processor that will run after inline is done.
# In this tree-processor we want to check our duplicate footnote tracker
# And add additional `backrefs` to the footnote pointing back to the
# duplicated references.
md.treeprocessors.register(FootnotePostTreeprocessor(self), 'footnote-duplicate', 15)
# Insert a postprocessor after amp_substitute processor
md.postprocessors.register(FootnotePostprocessor(self), 'footnote', 25)
def reset(self):
""" Clear footnotes on reset, and prepare for distinct document. """
self.footnotes = OrderedDict()
self.unique_prefix += 1
self.found_refs = {}
self.used_refs = set()
def unique_ref(self, reference, found=False):
""" Get a unique reference if there are duplicates. """
if not found:
return reference
original_ref = reference
while reference in self.used_refs:
ref, rest = reference.split(self.get_separator(), 1)
m = RE_REF_ID.match(ref)
if m:
reference = '%s%d%s%s' % (m.group(1), int(m.group(2))+1, self.get_separator(), rest)
else:
reference = '%s%d%s%s' % (ref, 2, self.get_separator(), rest)
self.used_refs.add(reference)
if original_ref in self.found_refs:
self.found_refs[original_ref] += 1
else:
self.found_refs[original_ref] = 1
return reference
def findFootnotesPlaceholder(self, root):
""" Return ElementTree Element that contains Footnote placeholder. """
def finder(element):
for child in element:
if child.text:
if child.text.find(self.getConfig("PLACE_MARKER")) > -1:
return child, element, True
if child.tail:
if child.tail.find(self.getConfig("PLACE_MARKER")) > -1:
return child, element, False
child_res = finder(child)
if child_res is not None:
return child_res
return None
res = finder(root)
return res
def setFootnote(self, id, text):
""" Store a footnote for later retrieval. """
self.footnotes[id] = text
def get_separator(self):
""" Get the footnote separator. """
return self.getConfig("SEPARATOR")
def makeFootnoteId(self, id):
""" Return footnote link id. """
if self.getConfig("UNIQUE_IDS"):
return 'fn%s%d-%s' % (self.get_separator(), self.unique_prefix, id)
else:
return 'fn{}{}'.format(self.get_separator(), id)
def makeFootnoteRefId(self, id, found=False):
""" Return footnote back-link id. """
if self.getConfig("UNIQUE_IDS"):
return self.unique_ref('fnref%s%d-%s' % (self.get_separator(), self.unique_prefix, id), found)
else:
return self.unique_ref('fnref{}{}'.format(self.get_separator(), id), found)
def makeFootnotesDiv(self, root):
""" Return `div` of footnotes as `etree` Element. """
if not list(self.footnotes.keys()):
return None
div = etree.Element("div")
div.set('class', 'footnote')
etree.SubElement(div, "hr")
ol = etree.SubElement(div, "ol")
surrogate_parent = etree.Element("div")
# Backward compatibility with old '%d' placeholder
backlink_title = self.getConfig("BACKLINK_TITLE").replace("%d", "{}")
for index, id in enumerate(self.footnotes.keys(), start=1):
li = etree.SubElement(ol, "li")
li.set("id", self.makeFootnoteId(id))
# Parse footnote with surrogate parent as `li` cannot be used.
# List block handlers have special logic to deal with `li`.
# When we are done parsing, we will copy everything over to `li`.
self.parser.parseChunk(surrogate_parent, self.footnotes[id])
for el in list(surrogate_parent):
li.append(el)
surrogate_parent.remove(el)
backlink = etree.Element("a")
backlink.set("href", "#" + self.makeFootnoteRefId(id))
backlink.set("class", "footnote-backref")
backlink.set(
"title",
backlink_title.format(index)
)
backlink.text = FN_BACKLINK_TEXT
if len(li):
node = li[-1]
if node.tag == "p":
node.text = node.text + NBSP_PLACEHOLDER
node.append(backlink)
else:
p = etree.SubElement(li, "p")
p.append(backlink)
return div
class FootnoteBlockProcessor(BlockProcessor):
""" Find all footnote references and store for later use. """
RE = re.compile(r'^[ ]{0,3}\[\^([^\]]*)\]:[ ]*(.*)$', re.MULTILINE)
def __init__(self, footnotes):
super().__init__(footnotes.parser)
self.footnotes = footnotes
def test(self, parent, block):
return True
def run(self, parent, blocks):
""" Find, set, and remove footnote definitions. """
block = blocks.pop(0)
m = self.RE.search(block)
if m:
id = m.group(1)
fn_blocks = [m.group(2)]
# Handle rest of block
therest = block[m.end():].lstrip('\n')
m2 = self.RE.search(therest)
if m2:
# Another footnote exists in the rest of this block.
# Any content before match is continuation of this footnote, which may be lazily indented.
before = therest[:m2.start()].rstrip('\n')
fn_blocks[0] = '\n'.join([fn_blocks[0], self.detab(before)]).lstrip('\n')
# Add back to blocks everything from beginning of match forward for next iteration.
blocks.insert(0, therest[m2.start():])
else:
# All remaining lines of block are continuation of this footnote, which may be lazily indented.
fn_blocks[0] = '\n'.join([fn_blocks[0], self.detab(therest)]).strip('\n')
# Check for child elements in remaining blocks.
fn_blocks.extend(self.detectTabbed(blocks))
footnote = "\n\n".join(fn_blocks)
self.footnotes.setFootnote(id, footnote.rstrip())
if block[:m.start()].strip():
# Add any content before match back to blocks as separate block
blocks.insert(0, block[:m.start()].rstrip('\n'))
return True
# No match. Restore block.
blocks.insert(0, block)
return False
def detectTabbed(self, blocks):
""" Find indented text and remove indent before further processing.
Returns: a list of blocks with indentation removed.
"""
fn_blocks = []
while blocks:
if blocks[0].startswith(' '*4):
block = blocks.pop(0)
# Check for new footnotes within this block and split at new footnote.
m = self.RE.search(block)
if m:
# Another footnote exists in this block.
# Any content before match is continuation of this footnote, which may be lazily indented.
before = block[:m.start()].rstrip('\n')
fn_blocks.append(self.detab(before))
# Add back to blocks everything from beginning of match forward for next iteration.
blocks.insert(0, block[m.start():])
# End of this footnote.
break
else:
# Entire block is part of this footnote.
fn_blocks.append(self.detab(block))
else:
# End of this footnote.
break
return fn_blocks
def detab(self, block):
""" Remove one level of indent from a block.
Preserve lazily indented blocks by only removing indent from indented lines.
"""
lines = block.split('\n')
for i, line in enumerate(lines):
if line.startswith(' '*4):
lines[i] = line[4:]
return '\n'.join(lines)
class FootnoteInlineProcessor(InlineProcessor):
""" `InlinePattern` for footnote markers in a document's body text. """
def __init__(self, pattern, footnotes):
super().__init__(pattern)
self.footnotes = footnotes
def handleMatch(self, m, data):
id = m.group(1)
if id in self.footnotes.footnotes.keys():
sup = etree.Element("sup")
a = etree.SubElement(sup, "a")
sup.set('id', self.footnotes.makeFootnoteRefId(id, found=True))
a.set('href', '#' + self.footnotes.makeFootnoteId(id))
a.set('class', 'footnote-ref')
a.text = self.footnotes.getConfig("SUPERSCRIPT_TEXT").format(
list(self.footnotes.footnotes.keys()).index(id) + 1
)
return sup, m.start(0), m.end(0)
else:
return None, None, None
class FootnotePostTreeprocessor(Treeprocessor):
""" Amend footnote div with duplicates. """
def __init__(self, footnotes):
self.footnotes = footnotes
def add_duplicates(self, li, duplicates):
""" Adjust current `li` and add the duplicates: `fnref2`, `fnref3`, etc. """
for link in li.iter('a'):
# Find the link that needs to be duplicated.
if link.attrib.get('class', '') == 'footnote-backref':
ref, rest = link.attrib['href'].split(self.footnotes.get_separator(), 1)
# Duplicate link the number of times we need to
# and point the to the appropriate references.
links = []
for index in range(2, duplicates + 1):
sib_link = copy.deepcopy(link)
sib_link.attrib['href'] = '%s%d%s%s' % (ref, index, self.footnotes.get_separator(), rest)
links.append(sib_link)
self.offset += 1
# Add all the new duplicate links.
el = list(li)[-1]
for link in links:
el.append(link)
break
def get_num_duplicates(self, li):
""" Get the number of duplicate refs of the footnote. """
fn, rest = li.attrib.get('id', '').split(self.footnotes.get_separator(), 1)
link_id = '{}ref{}{}'.format(fn, self.footnotes.get_separator(), rest)
return self.footnotes.found_refs.get(link_id, 0)
def handle_duplicates(self, parent):
""" Find duplicate footnotes and format and add the duplicates. """
for li in list(parent):
# Check number of duplicates footnotes and insert
# additional links if needed.
count = self.get_num_duplicates(li)
if count > 1:
self.add_duplicates(li, count)
def run(self, root):
""" Crawl the footnote div and add missing duplicate footnotes. """
self.offset = 0
for div in root.iter('div'):
if div.attrib.get('class', '') == 'footnote':
# Footnotes should be under the first ordered list under
# the footnote div. So once we find it, quit.
for ol in div.iter('ol'):
self.handle_duplicates(ol)
break
class FootnoteTreeprocessor(Treeprocessor):
""" Build and append footnote div to end of document. """
def __init__(self, footnotes):
self.footnotes = footnotes
def run(self, root):
footnotesDiv = self.footnotes.makeFootnotesDiv(root)
if footnotesDiv is not None:
result = self.footnotes.findFootnotesPlaceholder(root)
if result:
child, parent, isText = result
ind = list(parent).index(child)
if isText:
parent.remove(child)
parent.insert(ind, footnotesDiv)
else:
parent.insert(ind + 1, footnotesDiv)
child.tail = None
else:
root.append(footnotesDiv)
class FootnotePostprocessor(Postprocessor):
""" Replace placeholders with html entities. """
def __init__(self, footnotes):
self.footnotes = footnotes
def run(self, text):
text = text.replace(
FN_BACKLINK_TEXT, self.footnotes.getConfig("BACKLINK_TEXT")
)
return text.replace(NBSP_PLACEHOLDER, "&#160;")
def makeExtension(**kwargs): # pragma: no cover
""" Return an instance of the `FootnoteExtension` """
return FootnoteExtension(**kwargs)

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"""
Python Markdown
A Python implementation of John Gruber's Markdown.
Documentation: https://python-markdown.github.io/
GitHub: https://github.com/Python-Markdown/markdown/
PyPI: https://pypi.org/project/Markdown/
Started by Manfred Stienstra (http://www.dwerg.net/).
Maintained for a few years by Yuri Takhteyev (http://www.freewisdom.org).
Currently maintained by Waylan Limberg (https://github.com/waylan),
Dmitry Shachnev (https://github.com/mitya57) and Isaac Muse (https://github.com/facelessuser).
Copyright 2007-2018 The Python Markdown Project (v. 1.7 and later)
Copyright 2004, 2005, 2006 Yuri Takhteyev (v. 0.2-1.6b)
Copyright 2004 Manfred Stienstra (the original version)
License: BSD (see LICENSE.md for details).
Legacy Attributes Extension
===========================
An extension to Python Markdown which implements legacy attributes.
Prior to Python-Markdown version 3.0, the Markdown class had an `enable_attributes`
keyword which was on by default and provided for attributes to be defined for elements
using the format `{@key=value}`. This extension is provided as a replacement for
backward compatibility. New documents should be authored using `attr_lists`. However,
numerous documents exist which have been using the old attribute format for many
years. This extension can be used to continue to render those documents correctly.
"""
import re
from markdown.treeprocessors import Treeprocessor, isString
from markdown.extensions import Extension
ATTR_RE = re.compile(r'\{@([^\}]*)=([^\}]*)}') # {@id=123}
class LegacyAttrs(Treeprocessor):
def run(self, doc):
"""Find and set values of attributes ({@key=value}). """
for el in doc.iter():
alt = el.get('alt', None)
if alt is not None:
el.set('alt', self.handleAttributes(el, alt))
if el.text and isString(el.text):
el.text = self.handleAttributes(el, el.text)
if el.tail and isString(el.tail):
el.tail = self.handleAttributes(el, el.tail)
def handleAttributes(self, el, txt):
""" Set attributes and return text without definitions. """
def attributeCallback(match):
el.set(match.group(1), match.group(2).replace('\n', ' '))
return ATTR_RE.sub(attributeCallback, txt)
class LegacyAttrExtension(Extension):
def extendMarkdown(self, md):
md.treeprocessors.register(LegacyAttrs(md), 'legacyattrs', 15)
def makeExtension(**kwargs): # pragma: no cover
return LegacyAttrExtension(**kwargs)

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'''
Legacy Em Extension for Python-Markdown
=======================================
This extension provides legacy behavior for _connected_words_.
Copyright 2015-2018 The Python Markdown Project
License: [BSD](https://opensource.org/licenses/bsd-license.php)
'''
from . import Extension
from ..inlinepatterns import UnderscoreProcessor, EmStrongItem, EM_STRONG2_RE, STRONG_EM2_RE
import re
# _emphasis_
EMPHASIS_RE = r'(_)([^_]+)\1'
# __strong__
STRONG_RE = r'(_{2})(.+?)\1'
# __strong_em___
STRONG_EM_RE = r'(_)\1(?!\1)([^_]+?)\1(?!\1)(.+?)\1{3}'
class LegacyUnderscoreProcessor(UnderscoreProcessor):
"""Emphasis processor for handling strong and em matches inside underscores."""
PATTERNS = [
EmStrongItem(re.compile(EM_STRONG2_RE, re.DOTALL | re.UNICODE), 'double', 'strong,em'),
EmStrongItem(re.compile(STRONG_EM2_RE, re.DOTALL | re.UNICODE), 'double', 'em,strong'),
EmStrongItem(re.compile(STRONG_EM_RE, re.DOTALL | re.UNICODE), 'double2', 'strong,em'),
EmStrongItem(re.compile(STRONG_RE, re.DOTALL | re.UNICODE), 'single', 'strong'),
EmStrongItem(re.compile(EMPHASIS_RE, re.DOTALL | re.UNICODE), 'single', 'em')
]
class LegacyEmExtension(Extension):
""" Add legacy_em extension to Markdown class."""
def extendMarkdown(self, md):
""" Modify inline patterns. """
md.inlinePatterns.register(LegacyUnderscoreProcessor(r'_'), 'em_strong2', 50)
def makeExtension(**kwargs): # pragma: no cover
""" Return an instance of the `LegacyEmExtension` """
return LegacyEmExtension(**kwargs)

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"""
Python-Markdown Markdown in HTML Extension
===============================
An implementation of [PHP Markdown Extra](http://michelf.com/projects/php-markdown/extra/)'s
parsing of Markdown syntax in raw HTML.
See <https://Python-Markdown.github.io/extensions/raw_html>
for documentation.
Copyright The Python Markdown Project
License: [BSD](https://opensource.org/licenses/bsd-license.php)
"""
from . import Extension
from ..blockprocessors import BlockProcessor
from ..preprocessors import Preprocessor
from ..postprocessors import RawHtmlPostprocessor
from .. import util
from ..htmlparser import HTMLExtractor, blank_line_re
import xml.etree.ElementTree as etree
class HTMLExtractorExtra(HTMLExtractor):
"""
Override `HTMLExtractor` and create `etree` `Elements` for any elements which should have content parsed as
Markdown.
"""
def __init__(self, md, *args, **kwargs):
# All block-level tags.
self.block_level_tags = set(md.block_level_elements.copy())
# Block-level tags in which the content only gets span level parsing
self.span_tags = set(
['address', 'dd', 'dt', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'legend', 'li', 'p', 'summary', 'td', 'th']
)
# Block-level tags which never get their content parsed.
self.raw_tags = set(['canvas', 'math', 'option', 'pre', 'script', 'style', 'textarea'])
super().__init__(md, *args, **kwargs)
# Block-level tags in which the content gets parsed as blocks
self.block_tags = set(self.block_level_tags) - (self.span_tags | self.raw_tags | self.empty_tags)
self.span_and_blocks_tags = self.block_tags | self.span_tags
def reset(self):
"""Reset this instance. Loses all unprocessed data."""
self.mdstack = [] # When markdown=1, stack contains a list of tags
self.treebuilder = etree.TreeBuilder()
self.mdstate = [] # one of 'block', 'span', 'off', or None
super().reset()
def close(self):
"""Handle any buffered data."""
super().close()
# Handle any unclosed tags.
if self.mdstack:
# Close the outermost parent. `handle_endtag` will close all unclosed children.
self.handle_endtag(self.mdstack[0])
def get_element(self):
""" Return element from `treebuilder` and reset `treebuilder` for later use. """
element = self.treebuilder.close()
self.treebuilder = etree.TreeBuilder()
return element
def get_state(self, tag, attrs):
""" Return state from tag and `markdown` attribute. One of 'block', 'span', or 'off'. """
md_attr = attrs.get('markdown', '0')
if md_attr == 'markdown':
# `<tag markdown>` is the same as `<tag markdown='1'>`.
md_attr = '1'
parent_state = self.mdstate[-1] if self.mdstate else None
if parent_state == 'off' or (parent_state == 'span' and md_attr != '0'):
# Only use the parent state if it is more restrictive than the markdown attribute.
md_attr = parent_state
if ((md_attr == '1' and tag in self.block_tags) or
(md_attr == 'block' and tag in self.span_and_blocks_tags)):
return 'block'
elif ((md_attr == '1' and tag in self.span_tags) or
(md_attr == 'span' and tag in self.span_and_blocks_tags)):
return 'span'
elif tag in self.block_level_tags:
return 'off'
else: # pragma: no cover
return None
def handle_starttag(self, tag, attrs):
# Handle tags that should always be empty and do not specify a closing tag
if tag in self.empty_tags and (self.at_line_start() or self.intail):
attrs = {key: value if value is not None else key for key, value in attrs}
if "markdown" in attrs:
attrs.pop('markdown')
element = etree.Element(tag, attrs)
data = etree.tostring(element, encoding='unicode', method='html')
else:
data = self.get_starttag_text()
self.handle_empty_tag(data, True)
return
if tag in self.block_level_tags and (self.at_line_start() or self.intail):
# Valueless attribute (ex: `<tag checked>`) results in `[('checked', None)]`.
# Convert to `{'checked': 'checked'}`.
attrs = {key: value if value is not None else key for key, value in attrs}
state = self.get_state(tag, attrs)
if self.inraw or (state in [None, 'off'] and not self.mdstack):
# fall back to default behavior
attrs.pop('markdown', None)
super().handle_starttag(tag, attrs)
else:
if 'p' in self.mdstack and tag in self.block_level_tags:
# Close unclosed 'p' tag
self.handle_endtag('p')
self.mdstate.append(state)
self.mdstack.append(tag)
attrs['markdown'] = state
self.treebuilder.start(tag, attrs)
else:
# Span level tag
if self.inraw:
super().handle_starttag(tag, attrs)
else:
text = self.get_starttag_text()
if self.mdstate and self.mdstate[-1] == "off":
self.handle_data(self.md.htmlStash.store(text))
else:
self.handle_data(text)
if tag in self.CDATA_CONTENT_ELEMENTS:
# This is presumably a standalone tag in a code span (see #1036).
self.clear_cdata_mode()
def handle_endtag(self, tag):
if tag in self.block_level_tags:
if self.inraw:
super().handle_endtag(tag)
elif tag in self.mdstack:
# Close element and any unclosed children
while self.mdstack:
item = self.mdstack.pop()
self.mdstate.pop()
self.treebuilder.end(item)
if item == tag:
break
if not self.mdstack:
# Last item in stack is closed. Stash it
element = self.get_element()
# Get last entry to see if it ends in newlines
# If it is an element, assume there is no newlines
item = self.cleandoc[-1] if self.cleandoc else ''
# If we only have one newline before block element, add another
if not item.endswith('\n\n') and item.endswith('\n'):
self.cleandoc.append('\n')
self.cleandoc.append(self.md.htmlStash.store(element))
self.cleandoc.append('\n\n')
self.state = []
# Check if element has a tail
if not blank_line_re.match(
self.rawdata[self.line_offset + self.offset + len(self.get_endtag_text(tag)):]):
# More content exists after `endtag`.
self.intail = True
else:
# Treat orphan closing tag as a span level tag.
text = self.get_endtag_text(tag)
if self.mdstate and self.mdstate[-1] == "off":
self.handle_data(self.md.htmlStash.store(text))
else:
self.handle_data(text)
else:
# Span level tag
if self.inraw:
super().handle_endtag(tag)
else:
text = self.get_endtag_text(tag)
if self.mdstate and self.mdstate[-1] == "off":
self.handle_data(self.md.htmlStash.store(text))
else:
self.handle_data(text)
def handle_startendtag(self, tag, attrs):
if tag in self.empty_tags:
attrs = {key: value if value is not None else key for key, value in attrs}
if "markdown" in attrs:
attrs.pop('markdown')
element = etree.Element(tag, attrs)
data = etree.tostring(element, encoding='unicode', method='html')
else:
data = self.get_starttag_text()
else:
data = self.get_starttag_text()
self.handle_empty_tag(data, is_block=self.md.is_block_level(tag))
def handle_data(self, data):
if self.intail and '\n' in data:
self.intail = False
if self.inraw or not self.mdstack:
super().handle_data(data)
else:
self.treebuilder.data(data)
def handle_empty_tag(self, data, is_block):
if self.inraw or not self.mdstack:
super().handle_empty_tag(data, is_block)
else:
if self.at_line_start() and is_block:
self.handle_data('\n' + self.md.htmlStash.store(data) + '\n\n')
else:
self.handle_data(self.md.htmlStash.store(data))
def parse_pi(self, i):
if self.at_line_start() or self.intail or self.mdstack:
# The same override exists in `HTMLExtractor` without the check
# for `mdstack`. Therefore, use parent of `HTMLExtractor` instead.
return super(HTMLExtractor, self).parse_pi(i)
# This is not the beginning of a raw block so treat as plain data
# and avoid consuming any tags which may follow (see #1066).
self.handle_data('<?')
return i + 2
def parse_html_declaration(self, i):
if self.at_line_start() or self.intail or self.mdstack:
# The same override exists in `HTMLExtractor` without the check
# for `mdstack`. Therefore, use parent of `HTMLExtractor` instead.
return super(HTMLExtractor, self).parse_html_declaration(i)
# This is not the beginning of a raw block so treat as plain data
# and avoid consuming any tags which may follow (see #1066).
self.handle_data('<!')
return i + 2
class HtmlBlockPreprocessor(Preprocessor):
"""Remove html blocks from the text and store them for later retrieval."""
def run(self, lines):
source = '\n'.join(lines)
parser = HTMLExtractorExtra(self.md)
parser.feed(source)
parser.close()
return ''.join(parser.cleandoc).split('\n')
class MarkdownInHtmlProcessor(BlockProcessor):
"""Process Markdown Inside HTML Blocks which have been stored in the `HtmlStash`."""
def test(self, parent, block):
# Always return True. `run` will return `False` it not a valid match.
return True
def parse_element_content(self, element):
"""
Recursively parse the text content of an `etree` Element as Markdown.
Any block level elements generated from the Markdown will be inserted as children of the element in place
of the text content. All `markdown` attributes are removed. For any elements in which Markdown parsing has
been disabled, the text content of it and its children are wrapped in an `AtomicString`.
"""
md_attr = element.attrib.pop('markdown', 'off')
if md_attr == 'block':
# Parse content as block level
# The order in which the different parts are parsed (text, children, tails) is important here as the
# order of elements needs to be preserved. We can't be inserting items at a later point in the current
# iteration as we don't want to do raw processing on elements created from parsing Markdown text (for
# example). Therefore, the order of operations is children, tails, text.
# Recursively parse existing children from raw HTML
for child in list(element):
self.parse_element_content(child)
# Parse Markdown text in tail of children. Do this separate to avoid raw HTML parsing.
# Save the position of each item to be inserted later in reverse.
tails = []
for pos, child in enumerate(element):
if child.tail:
block = child.tail.rstrip('\n')
child.tail = ''
# Use a dummy placeholder element.
dummy = etree.Element('div')
self.parser.parseBlocks(dummy, block.split('\n\n'))
children = list(dummy)
children.reverse()
tails.append((pos + 1, children))
# Insert the elements created from the tails in reverse.
tails.reverse()
for pos, tail in tails:
for item in tail:
element.insert(pos, item)
# Parse Markdown text content. Do this last to avoid raw HTML parsing.
if element.text:
block = element.text.rstrip('\n')
element.text = ''
# Use a dummy placeholder element as the content needs to get inserted before existing children.
dummy = etree.Element('div')
self.parser.parseBlocks(dummy, block.split('\n\n'))
children = list(dummy)
children.reverse()
for child in children:
element.insert(0, child)
elif md_attr == 'span':
# Span level parsing will be handled by inline processors.
# Walk children here to remove any `markdown` attributes.
for child in list(element):
self.parse_element_content(child)
else:
# Disable inline parsing for everything else
if element.text is None:
element.text = ''
element.text = util.AtomicString(element.text)
for child in list(element):
self.parse_element_content(child)
if child.tail:
child.tail = util.AtomicString(child.tail)
def run(self, parent, blocks):
m = util.HTML_PLACEHOLDER_RE.match(blocks[0])
if m:
index = int(m.group(1))
element = self.parser.md.htmlStash.rawHtmlBlocks[index]
if isinstance(element, etree.Element):
# We have a matched element. Process it.
blocks.pop(0)
self.parse_element_content(element)
parent.append(element)
# Cleanup stash. Replace element with empty string to avoid confusing postprocessor.
self.parser.md.htmlStash.rawHtmlBlocks.pop(index)
self.parser.md.htmlStash.rawHtmlBlocks.insert(index, '')
# Confirm the match to the `blockparser`.
return True
# No match found.
return False
class MarkdownInHTMLPostprocessor(RawHtmlPostprocessor):
def stash_to_string(self, text):
""" Override default to handle any `etree` elements still in the stash. """
if isinstance(text, etree.Element):
return self.md.serializer(text)
else:
return str(text)
class MarkdownInHtmlExtension(Extension):
"""Add Markdown parsing in HTML to Markdown class."""
def extendMarkdown(self, md):
""" Register extension instances. """
# Replace raw HTML preprocessor
md.preprocessors.register(HtmlBlockPreprocessor(md), 'html_block', 20)
# Add `blockprocessor` which handles the placeholders for `etree` elements
md.parser.blockprocessors.register(
MarkdownInHtmlProcessor(md.parser), 'markdown_block', 105
)
# Replace raw HTML postprocessor
md.postprocessors.register(MarkdownInHTMLPostprocessor(md), 'raw_html', 30)
def makeExtension(**kwargs): # pragma: no cover
return MarkdownInHtmlExtension(**kwargs)

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"""
Meta Data Extension for Python-Markdown
=======================================
This extension adds Meta Data handling to markdown.
See <https://Python-Markdown.github.io/extensions/meta_data>
for documentation.
Original code Copyright 2007-2008 [Waylan Limberg](http://achinghead.com).
All changes Copyright 2008-2014 The Python Markdown Project
License: [BSD](https://opensource.org/licenses/bsd-license.php)
"""
from . import Extension
from ..preprocessors import Preprocessor
import re
import logging
log = logging.getLogger('MARKDOWN')
# Global Vars
META_RE = re.compile(r'^[ ]{0,3}(?P<key>[A-Za-z0-9_-]+):\s*(?P<value>.*)')
META_MORE_RE = re.compile(r'^[ ]{4,}(?P<value>.*)')
BEGIN_RE = re.compile(r'^-{3}(\s.*)?')
END_RE = re.compile(r'^(-{3}|\.{3})(\s.*)?')
class MetaExtension (Extension):
""" Meta-Data extension for Python-Markdown. """
def extendMarkdown(self, md):
""" Add `MetaPreprocessor` to Markdown instance. """
md.registerExtension(self)
self.md = md
md.preprocessors.register(MetaPreprocessor(md), 'meta', 27)
def reset(self):
self.md.Meta = {}
class MetaPreprocessor(Preprocessor):
""" Get Meta-Data. """
def run(self, lines):
""" Parse Meta-Data and store in Markdown.Meta. """
meta = {}
key = None
if lines and BEGIN_RE.match(lines[0]):
lines.pop(0)
while lines:
line = lines.pop(0)
m1 = META_RE.match(line)
if line.strip() == '' or END_RE.match(line):
break # blank line or end of YAML header - done
if m1:
key = m1.group('key').lower().strip()
value = m1.group('value').strip()
try:
meta[key].append(value)
except KeyError:
meta[key] = [value]
else:
m2 = META_MORE_RE.match(line)
if m2 and key:
# Add another line to existing key
meta[key].append(m2.group('value').strip())
else:
lines.insert(0, line)
break # no meta data - done
self.md.Meta = meta
return lines
def makeExtension(**kwargs): # pragma: no cover
return MetaExtension(**kwargs)

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"""
`NL2BR` Extension
===============
A Python-Markdown extension to treat newlines as hard breaks; like
GitHub-flavored Markdown does.
See <https://Python-Markdown.github.io/extensions/nl2br>
for documentation.
Original code Copyright 2011 [Brian Neal](https://deathofagremmie.com/)
All changes Copyright 2011-2014 The Python Markdown Project
License: [BSD](https://opensource.org/licenses/bsd-license.php)
"""
from . import Extension
from ..inlinepatterns import SubstituteTagInlineProcessor
BR_RE = r'\n'
class Nl2BrExtension(Extension):
def extendMarkdown(self, md):
br_tag = SubstituteTagInlineProcessor(BR_RE, 'br')
md.inlinePatterns.register(br_tag, 'nl', 5)
def makeExtension(**kwargs): # pragma: no cover
return Nl2BrExtension(**kwargs)

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"""
Sane List Extension for Python-Markdown
=======================================
Modify the behavior of Lists in Python-Markdown to act in a sane manor.
See <https://Python-Markdown.github.io/extensions/sane_lists>
for documentation.
Original code Copyright 2011 [Waylan Limberg](http://achinghead.com)
All changes Copyright 2011-2014 The Python Markdown Project
License: [BSD](https://opensource.org/licenses/bsd-license.php)
"""
from . import Extension
from ..blockprocessors import OListProcessor, UListProcessor
import re
class SaneOListProcessor(OListProcessor):
SIBLING_TAGS = ['ol']
LAZY_OL = False
def __init__(self, parser):
super().__init__(parser)
self.CHILD_RE = re.compile(r'^[ ]{0,%d}((\d+\.))[ ]+(.*)' %
(self.tab_length - 1))
class SaneUListProcessor(UListProcessor):
SIBLING_TAGS = ['ul']
def __init__(self, parser):
super().__init__(parser)
self.CHILD_RE = re.compile(r'^[ ]{0,%d}(([*+-]))[ ]+(.*)' %
(self.tab_length - 1))
class SaneListExtension(Extension):
""" Add sane lists to Markdown. """
def extendMarkdown(self, md):
""" Override existing Processors. """
md.parser.blockprocessors.register(SaneOListProcessor(md.parser), 'olist', 40)
md.parser.blockprocessors.register(SaneUListProcessor(md.parser), 'ulist', 30)
def makeExtension(**kwargs): # pragma: no cover
return SaneListExtension(**kwargs)

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'''
Smarty extension for Python-Markdown
====================================
Adds conversion of ASCII dashes, quotes and ellipses to their HTML
entity equivalents.
See <https://Python-Markdown.github.io/extensions/smarty>
for documentation.
Author: 2013, Dmitry Shachnev <mitya57@gmail.com>
All changes Copyright 2013-2014 The Python Markdown Project
License: [BSD](https://opensource.org/licenses/bsd-license.php)
SmartyPants license:
Copyright (c) 2003 John Gruber <https://daringfireball.net/>
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
* Neither the name "SmartyPants" nor the names of its contributors
may be used to endorse or promote products derived from this
software without specific prior written permission.
This software is provided by the copyright holders and contributors "as
is" and any express or implied warranties, including, but not limited
to, the implied warranties of merchantability and fitness for a
particular purpose are disclaimed. In no event shall the copyright
owner or contributors be liable for any direct, indirect, incidental,
special, exemplary, or consequential damages (including, but not
limited to, procurement of substitute goods or services; loss of use,
data, or profits; or business interruption) however caused and on any
theory of liability, whether in contract, strict liability, or tort
(including negligence or otherwise) arising in any way out of the use
of this software, even if advised of the possibility of such damage.
`smartypants.py` license:
`smartypants.py` is a derivative work of SmartyPants.
Copyright (c) 2004, 2007 Chad Miller <http://web.chad.org/>
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
This software is provided by the copyright holders and contributors "as
is" and any express or implied warranties, including, but not limited
to, the implied warranties of merchantability and fitness for a
particular purpose are disclaimed. In no event shall the copyright
owner or contributors be liable for any direct, indirect, incidental,
special, exemplary, or consequential damages (including, but not
limited to, procurement of substitute goods or services; loss of use,
data, or profits; or business interruption) however caused and on any
theory of liability, whether in contract, strict liability, or tort
(including negligence or otherwise) arising in any way out of the use
of this software, even if advised of the possibility of such damage.
'''
from . import Extension
from ..inlinepatterns import HtmlInlineProcessor, HTML_RE
from ..treeprocessors import InlineProcessor
from ..util import Registry
# Constants for quote education.
punctClass = r"""[!"#\$\%'()*+,-.\/:;<=>?\@\[\\\]\^_`{|}~]"""
endOfWordClass = r"[\s.,;:!?)]"
closeClass = r"[^\ \t\r\n\[\{\(\-\u0002\u0003]"
openingQuotesBase = (
r'(\s' # a whitespace char
r'|&nbsp;' # or a non-breaking space entity
r'|--' # or dashes
r'|–|—' # or Unicode
r'|&[mn]dash;' # or named dash entities
r'|&#8211;|&#8212;' # or decimal entities
r')'
)
substitutions = {
'mdash': '&mdash;',
'ndash': '&ndash;',
'ellipsis': '&hellip;',
'left-angle-quote': '&laquo;',
'right-angle-quote': '&raquo;',
'left-single-quote': '&lsquo;',
'right-single-quote': '&rsquo;',
'left-double-quote': '&ldquo;',
'right-double-quote': '&rdquo;',
}
# Special case if the very first character is a quote
# followed by punctuation at a non-word-break. Close the quotes by brute force:
singleQuoteStartRe = r"^'(?=%s\B)" % punctClass
doubleQuoteStartRe = r'^"(?=%s\B)' % punctClass
# Special case for double sets of quotes, e.g.:
# <p>He said, "'Quoted' words in a larger quote."</p>
doubleQuoteSetsRe = r""""'(?=\w)"""
singleQuoteSetsRe = r"""'"(?=\w)"""
# Special case for decade abbreviations (the '80s):
decadeAbbrRe = r"(?<!\w)'(?=\d{2}s)"
# Get most opening double quotes:
openingDoubleQuotesRegex = r'%s"(?=\w)' % openingQuotesBase
# Double closing quotes:
closingDoubleQuotesRegex = r'"(?=\s)'
closingDoubleQuotesRegex2 = '(?<=%s)"' % closeClass
# Get most opening single quotes:
openingSingleQuotesRegex = r"%s'(?=\w)" % openingQuotesBase
# Single closing quotes:
closingSingleQuotesRegex = r"(?<=%s)'(?!\s|s\b|\d)" % closeClass
closingSingleQuotesRegex2 = r"'(\s|s\b)"
# All remaining quotes should be opening ones
remainingSingleQuotesRegex = r"'"
remainingDoubleQuotesRegex = r'"'
HTML_STRICT_RE = HTML_RE + r'(?!\>)'
class SubstituteTextPattern(HtmlInlineProcessor):
def __init__(self, pattern, replace, md):
""" Replaces matches with some text. """
HtmlInlineProcessor.__init__(self, pattern)
self.replace = replace
self.md = md
def handleMatch(self, m, data):
result = ''
for part in self.replace:
if isinstance(part, int):
result += m.group(part)
else:
result += self.md.htmlStash.store(part)
return result, m.start(0), m.end(0)
class SmartyExtension(Extension):
def __init__(self, **kwargs):
self.config = {
'smart_quotes': [True, 'Educate quotes'],
'smart_angled_quotes': [False, 'Educate angled quotes'],
'smart_dashes': [True, 'Educate dashes'],
'smart_ellipses': [True, 'Educate ellipses'],
'substitutions': [{}, 'Overwrite default substitutions'],
}
super().__init__(**kwargs)
self.substitutions = dict(substitutions)
self.substitutions.update(self.getConfig('substitutions', default={}))
def _addPatterns(self, md, patterns, serie, priority):
for ind, pattern in enumerate(patterns):
pattern += (md,)
pattern = SubstituteTextPattern(*pattern)
name = 'smarty-%s-%d' % (serie, ind)
self.inlinePatterns.register(pattern, name, priority-ind)
def educateDashes(self, md):
emDashesPattern = SubstituteTextPattern(
r'(?<!-)---(?!-)', (self.substitutions['mdash'],), md
)
enDashesPattern = SubstituteTextPattern(
r'(?<!-)--(?!-)', (self.substitutions['ndash'],), md
)
self.inlinePatterns.register(emDashesPattern, 'smarty-em-dashes', 50)
self.inlinePatterns.register(enDashesPattern, 'smarty-en-dashes', 45)
def educateEllipses(self, md):
ellipsesPattern = SubstituteTextPattern(
r'(?<!\.)\.{3}(?!\.)', (self.substitutions['ellipsis'],), md
)
self.inlinePatterns.register(ellipsesPattern, 'smarty-ellipses', 10)
def educateAngledQuotes(self, md):
leftAngledQuotePattern = SubstituteTextPattern(
r'\<\<', (self.substitutions['left-angle-quote'],), md
)
rightAngledQuotePattern = SubstituteTextPattern(
r'\>\>', (self.substitutions['right-angle-quote'],), md
)
self.inlinePatterns.register(leftAngledQuotePattern, 'smarty-left-angle-quotes', 40)
self.inlinePatterns.register(rightAngledQuotePattern, 'smarty-right-angle-quotes', 35)
def educateQuotes(self, md):
lsquo = self.substitutions['left-single-quote']
rsquo = self.substitutions['right-single-quote']
ldquo = self.substitutions['left-double-quote']
rdquo = self.substitutions['right-double-quote']
patterns = (
(singleQuoteStartRe, (rsquo,)),
(doubleQuoteStartRe, (rdquo,)),
(doubleQuoteSetsRe, (ldquo + lsquo,)),
(singleQuoteSetsRe, (lsquo + ldquo,)),
(decadeAbbrRe, (rsquo,)),
(openingSingleQuotesRegex, (1, lsquo)),
(closingSingleQuotesRegex, (rsquo,)),
(closingSingleQuotesRegex2, (rsquo, 1)),
(remainingSingleQuotesRegex, (lsquo,)),
(openingDoubleQuotesRegex, (1, ldquo)),
(closingDoubleQuotesRegex, (rdquo,)),
(closingDoubleQuotesRegex2, (rdquo,)),
(remainingDoubleQuotesRegex, (ldquo,))
)
self._addPatterns(md, patterns, 'quotes', 30)
def extendMarkdown(self, md):
configs = self.getConfigs()
self.inlinePatterns = Registry()
if configs['smart_ellipses']:
self.educateEllipses(md)
if configs['smart_quotes']:
self.educateQuotes(md)
if configs['smart_angled_quotes']:
self.educateAngledQuotes(md)
# Override `HTML_RE` from `inlinepatterns.py` so that it does not
# process tags with duplicate closing quotes.
md.inlinePatterns.register(HtmlInlineProcessor(HTML_STRICT_RE, md), 'html', 90)
if configs['smart_dashes']:
self.educateDashes(md)
inlineProcessor = InlineProcessor(md)
inlineProcessor.inlinePatterns = self.inlinePatterns
md.treeprocessors.register(inlineProcessor, 'smarty', 2)
md.ESCAPED_CHARS.extend(['"', "'"])
def makeExtension(**kwargs): # pragma: no cover
return SmartyExtension(**kwargs)

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"""
Tables Extension for Python-Markdown
====================================
Added parsing of tables to Python-Markdown.
See <https://Python-Markdown.github.io/extensions/tables>
for documentation.
Original code Copyright 2009 [Waylan Limberg](http://achinghead.com)
All changes Copyright 2008-2014 The Python Markdown Project
License: [BSD](https://opensource.org/licenses/bsd-license.php)
"""
from . import Extension
from ..blockprocessors import BlockProcessor
import xml.etree.ElementTree as etree
import re
PIPE_NONE = 0
PIPE_LEFT = 1
PIPE_RIGHT = 2
class TableProcessor(BlockProcessor):
""" Process Tables. """
RE_CODE_PIPES = re.compile(r'(?:(\\\\)|(\\`+)|(`+)|(\\\|)|(\|))')
RE_END_BORDER = re.compile(r'(?<!\\)(?:\\\\)*\|$')
def __init__(self, parser, config):
self.border = False
self.separator = ''
self.config = config
super().__init__(parser)
def test(self, parent, block):
"""
Ensure first two rows (column header and separator row) are valid table rows.
Keep border check and separator row do avoid repeating the work.
"""
is_table = False
rows = [row.strip(' ') for row in block.split('\n')]
if len(rows) > 1:
header0 = rows[0]
self.border = PIPE_NONE
if header0.startswith('|'):
self.border |= PIPE_LEFT
if self.RE_END_BORDER.search(header0) is not None:
self.border |= PIPE_RIGHT
row = self._split_row(header0)
row0_len = len(row)
is_table = row0_len > 1
# Each row in a single column table needs at least one pipe.
if not is_table and row0_len == 1 and self.border:
for index in range(1, len(rows)):
is_table = rows[index].startswith('|')
if not is_table:
is_table = self.RE_END_BORDER.search(rows[index]) is not None
if not is_table:
break
if is_table:
row = self._split_row(rows[1])
is_table = (len(row) == row0_len) and set(''.join(row)) <= set('|:- ')
if is_table:
self.separator = row
return is_table
def run(self, parent, blocks):
""" Parse a table block and build table. """
block = blocks.pop(0).split('\n')
header = block[0].strip(' ')
rows = [] if len(block) < 3 else block[2:]
# Get alignment of columns
align = []
for c in self.separator:
c = c.strip(' ')
if c.startswith(':') and c.endswith(':'):
align.append('center')
elif c.startswith(':'):
align.append('left')
elif c.endswith(':'):
align.append('right')
else:
align.append(None)
# Build table
table = etree.SubElement(parent, 'table')
thead = etree.SubElement(table, 'thead')
self._build_row(header, thead, align)
tbody = etree.SubElement(table, 'tbody')
if len(rows) == 0:
# Handle empty table
self._build_empty_row(tbody, align)
else:
for row in rows:
self._build_row(row.strip(' '), tbody, align)
def _build_empty_row(self, parent, align):
"""Build an empty row."""
tr = etree.SubElement(parent, 'tr')
count = len(align)
while count:
etree.SubElement(tr, 'td')
count -= 1
def _build_row(self, row, parent, align):
""" Given a row of text, build table cells. """
tr = etree.SubElement(parent, 'tr')
tag = 'td'
if parent.tag == 'thead':
tag = 'th'
cells = self._split_row(row)
# We use align here rather than cells to ensure every row
# contains the same number of columns.
for i, a in enumerate(align):
c = etree.SubElement(tr, tag)
try:
c.text = cells[i].strip(' ')
except IndexError: # pragma: no cover
c.text = ""
if a:
if self.config['use_align_attribute']:
c.set('align', a)
else:
c.set('style', f'text-align: {a};')
def _split_row(self, row):
""" split a row of text into list of cells. """
if self.border:
if row.startswith('|'):
row = row[1:]
row = self.RE_END_BORDER.sub('', row)
return self._split(row)
def _split(self, row):
""" split a row of text with some code into a list of cells. """
elements = []
pipes = []
tics = []
tic_points = []
tic_region = []
good_pipes = []
# Parse row
# Throw out \\, and \|
for m in self.RE_CODE_PIPES.finditer(row):
# Store ` data (len, start_pos, end_pos)
if m.group(2):
# \`+
# Store length of each tic group: subtract \
tics.append(len(m.group(2)) - 1)
# Store start of group, end of group, and escape length
tic_points.append((m.start(2), m.end(2) - 1, 1))
elif m.group(3):
# `+
# Store length of each tic group
tics.append(len(m.group(3)))
# Store start of group, end of group, and escape length
tic_points.append((m.start(3), m.end(3) - 1, 0))
# Store pipe location
elif m.group(5):
pipes.append(m.start(5))
# Pair up tics according to size if possible
# Subtract the escape length *only* from the opening.
# Walk through tic list and see if tic has a close.
# Store the tic region (start of region, end of region).
pos = 0
tic_len = len(tics)
while pos < tic_len:
try:
tic_size = tics[pos] - tic_points[pos][2]
if tic_size == 0:
raise ValueError
index = tics[pos + 1:].index(tic_size) + 1
tic_region.append((tic_points[pos][0], tic_points[pos + index][1]))
pos += index + 1
except ValueError:
pos += 1
# Resolve pipes. Check if they are within a tic pair region.
# Walk through pipes comparing them to each region.
# - If pipe position is less that a region, it isn't in a region
# - If it is within a region, we don't want it, so throw it out
# - If we didn't throw it out, it must be a table pipe
for pipe in pipes:
throw_out = False
for region in tic_region:
if pipe < region[0]:
# Pipe is not in a region
break
elif region[0] <= pipe <= region[1]:
# Pipe is within a code region. Throw it out.
throw_out = True
break
if not throw_out:
good_pipes.append(pipe)
# Split row according to table delimiters.
pos = 0
for pipe in good_pipes:
elements.append(row[pos:pipe])
pos = pipe + 1
elements.append(row[pos:])
return elements
class TableExtension(Extension):
""" Add tables to Markdown. """
def __init__(self, **kwargs):
self.config = {
'use_align_attribute': [False, 'True to use align attribute instead of style.'],
}
super().__init__(**kwargs)
def extendMarkdown(self, md):
""" Add an instance of `TableProcessor` to `BlockParser`. """
if '|' not in md.ESCAPED_CHARS:
md.ESCAPED_CHARS.append('|')
processor = TableProcessor(md.parser, self.getConfigs())
md.parser.blockprocessors.register(processor, 'table', 75)
def makeExtension(**kwargs): # pragma: no cover
return TableExtension(**kwargs)

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"""
Table of Contents Extension for Python-Markdown
===============================================
See <https://Python-Markdown.github.io/extensions/toc>
for documentation.
Original code Copyright 2008 [Jack Miller](https://codezen.org/)
All changes Copyright 2008-2014 The Python Markdown Project
License: [BSD](https://opensource.org/licenses/bsd-license.php)
"""
from . import Extension
from ..treeprocessors import Treeprocessor
from ..util import code_escape, parseBoolValue, AMP_SUBSTITUTE, HTML_PLACEHOLDER_RE, AtomicString
from ..treeprocessors import UnescapeTreeprocessor
import re
import html
import unicodedata
import xml.etree.ElementTree as etree
def slugify(value, separator, unicode=False):
""" Slugify a string, to make it URL friendly. """
if not unicode:
# Replace Extended Latin characters with ASCII, i.e. `žlutý` => `zluty`
value = unicodedata.normalize('NFKD', value)
value = value.encode('ascii', 'ignore').decode('ascii')
value = re.sub(r'[^\w\s-]', '', value).strip().lower()
return re.sub(r'[{}\s]+'.format(separator), separator, value)
def slugify_unicode(value, separator):
""" Slugify a string, to make it URL friendly while preserving Unicode characters. """
return slugify(value, separator, unicode=True)
IDCOUNT_RE = re.compile(r'^(.*)_([0-9]+)$')
def unique(id, ids):
""" Ensure id is unique in set of ids. Append '_1', '_2'... if not """
while id in ids or not id:
m = IDCOUNT_RE.match(id)
if m:
id = '%s_%d' % (m.group(1), int(m.group(2))+1)
else:
id = '%s_%d' % (id, 1)
ids.add(id)
return id
def get_name(el):
"""Get title name."""
text = []
for c in el.itertext():
if isinstance(c, AtomicString):
text.append(html.unescape(c))
else:
text.append(c)
return ''.join(text).strip()
def stashedHTML2text(text, md, strip_entities=True):
""" Extract raw HTML from stash, reduce to plain text and swap with placeholder. """
def _html_sub(m):
""" Substitute raw html with plain text. """
try:
raw = md.htmlStash.rawHtmlBlocks[int(m.group(1))]
except (IndexError, TypeError): # pragma: no cover
return m.group(0)
# Strip out tags and/or entities - leaving text
res = re.sub(r'(<[^>]+>)', '', raw)
if strip_entities:
res = re.sub(r'(&[\#a-zA-Z0-9]+;)', '', res)
return res
return HTML_PLACEHOLDER_RE.sub(_html_sub, text)
def unescape(text):
""" Unescape escaped text. """
c = UnescapeTreeprocessor()
return c.unescape(text)
def nest_toc_tokens(toc_list):
"""Given an unsorted list with errors and skips, return a nested one.
[{'level': 1}, {'level': 2}]
=>
[{'level': 1, 'children': [{'level': 2, 'children': []}]}]
A wrong list is also converted:
[{'level': 2}, {'level': 1}]
=>
[{'level': 2, 'children': []}, {'level': 1, 'children': []}]
"""
ordered_list = []
if len(toc_list):
# Initialize everything by processing the first entry
last = toc_list.pop(0)
last['children'] = []
levels = [last['level']]
ordered_list.append(last)
parents = []
# Walk the rest nesting the entries properly
while toc_list:
t = toc_list.pop(0)
current_level = t['level']
t['children'] = []
# Reduce depth if current level < last item's level
if current_level < levels[-1]:
# Pop last level since we know we are less than it
levels.pop()
# Pop parents and levels we are less than or equal to
to_pop = 0
for p in reversed(parents):
if current_level <= p['level']:
to_pop += 1
else: # pragma: no cover
break
if to_pop:
levels = levels[:-to_pop]
parents = parents[:-to_pop]
# Note current level as last
levels.append(current_level)
# Level is the same, so append to
# the current parent (if available)
if current_level == levels[-1]:
(parents[-1]['children'] if parents
else ordered_list).append(t)
# Current level is > last item's level,
# So make last item a parent and append current as child
else:
last['children'].append(t)
parents.append(last)
levels.append(current_level)
last = t
return ordered_list
class TocTreeprocessor(Treeprocessor):
def __init__(self, md, config):
super().__init__(md)
self.marker = config["marker"]
self.title = config["title"]
self.base_level = int(config["baselevel"]) - 1
self.slugify = config["slugify"]
self.sep = config["separator"]
self.toc_class = config["toc_class"]
self.use_anchors = parseBoolValue(config["anchorlink"])
self.anchorlink_class = config["anchorlink_class"]
self.use_permalinks = parseBoolValue(config["permalink"], False)
if self.use_permalinks is None:
self.use_permalinks = config["permalink"]
self.permalink_class = config["permalink_class"]
self.permalink_title = config["permalink_title"]
self.header_rgx = re.compile("[Hh][123456]")
if isinstance(config["toc_depth"], str) and '-' in config["toc_depth"]:
self.toc_top, self.toc_bottom = [int(x) for x in config["toc_depth"].split('-')]
else:
self.toc_top = 1
self.toc_bottom = int(config["toc_depth"])
def iterparent(self, node):
''' Iterator wrapper to get allowed parent and child all at once. '''
# We do not allow the marker inside a header as that
# would causes an endless loop of placing a new TOC
# inside previously generated TOC.
for child in node:
if not self.header_rgx.match(child.tag) and child.tag not in ['pre', 'code']:
yield node, child
yield from self.iterparent(child)
def replace_marker(self, root, elem):
''' Replace marker with elem. '''
for (p, c) in self.iterparent(root):
text = ''.join(c.itertext()).strip()
if not text:
continue
# To keep the output from screwing up the
# validation by putting a `<div>` inside of a `<p>`
# we actually replace the `<p>` in its entirety.
# The `<p>` element may contain more than a single text content
# (`nl2br` can introduce a `<br>`). In this situation, `c.text` returns
# the very first content, ignore children contents or tail content.
# `len(c) == 0` is here to ensure there is only text in the `<p>`.
if c.text and c.text.strip() == self.marker and len(c) == 0:
for i in range(len(p)):
if p[i] == c:
p[i] = elem
break
def set_level(self, elem):
''' Adjust header level according to base level. '''
level = int(elem.tag[-1]) + self.base_level
if level > 6:
level = 6
elem.tag = 'h%d' % level
def add_anchor(self, c, elem_id):
anchor = etree.Element("a")
anchor.text = c.text
anchor.attrib["href"] = "#" + elem_id
anchor.attrib["class"] = self.anchorlink_class
c.text = ""
for elem in c:
anchor.append(elem)
while len(c):
c.remove(c[0])
c.append(anchor)
def add_permalink(self, c, elem_id):
permalink = etree.Element("a")
permalink.text = ("%spara;" % AMP_SUBSTITUTE
if self.use_permalinks is True
else self.use_permalinks)
permalink.attrib["href"] = "#" + elem_id
permalink.attrib["class"] = self.permalink_class
if self.permalink_title:
permalink.attrib["title"] = self.permalink_title
c.append(permalink)
def build_toc_div(self, toc_list):
""" Return a string div given a toc list. """
div = etree.Element("div")
div.attrib["class"] = self.toc_class
# Add title to the div
if self.title:
header = etree.SubElement(div, "span")
header.attrib["class"] = "toctitle"
header.text = self.title
def build_etree_ul(toc_list, parent):
ul = etree.SubElement(parent, "ul")
for item in toc_list:
# List item link, to be inserted into the toc div
li = etree.SubElement(ul, "li")
link = etree.SubElement(li, "a")
link.text = item.get('name', '')
link.attrib["href"] = '#' + item.get('id', '')
if item['children']:
build_etree_ul(item['children'], li)
return ul
build_etree_ul(toc_list, div)
if 'prettify' in self.md.treeprocessors:
self.md.treeprocessors['prettify'].run(div)
return div
def run(self, doc):
# Get a list of id attributes
used_ids = set()
for el in doc.iter():
if "id" in el.attrib:
used_ids.add(el.attrib["id"])
toc_tokens = []
for el in doc.iter():
if isinstance(el.tag, str) and self.header_rgx.match(el.tag):
self.set_level(el)
text = get_name(el)
# Do not override pre-existing ids
if "id" not in el.attrib:
innertext = unescape(stashedHTML2text(text, self.md))
el.attrib["id"] = unique(self.slugify(innertext, self.sep), used_ids)
if int(el.tag[-1]) >= self.toc_top and int(el.tag[-1]) <= self.toc_bottom:
toc_tokens.append({
'level': int(el.tag[-1]),
'id': el.attrib["id"],
'name': unescape(stashedHTML2text(
code_escape(el.attrib.get('data-toc-label', text)),
self.md, strip_entities=False
))
})
# Remove the data-toc-label attribute as it is no longer needed
if 'data-toc-label' in el.attrib:
del el.attrib['data-toc-label']
if self.use_anchors:
self.add_anchor(el, el.attrib["id"])
if self.use_permalinks not in [False, None]:
self.add_permalink(el, el.attrib["id"])
toc_tokens = nest_toc_tokens(toc_tokens)
div = self.build_toc_div(toc_tokens)
if self.marker:
self.replace_marker(doc, div)
# serialize and attach to markdown instance.
toc = self.md.serializer(div)
for pp in self.md.postprocessors:
toc = pp.run(toc)
self.md.toc_tokens = toc_tokens
self.md.toc = toc
class TocExtension(Extension):
TreeProcessorClass = TocTreeprocessor
def __init__(self, **kwargs):
self.config = {
"marker": ['[TOC]',
'Text to find and replace with Table of Contents - '
'Set to an empty string to disable. Defaults to "[TOC]"'],
"title": ["",
"Title to insert into TOC <div> - "
"Defaults to an empty string"],
"toc_class": ['toc',
'CSS class(es) used for the link. '
'Defaults to "toclink"'],
"anchorlink": [False,
"True if header should be a self link - "
"Defaults to False"],
"anchorlink_class": ['toclink',
'CSS class(es) used for the link. '
'Defaults to "toclink"'],
"permalink": [0,
"True or link text if a Sphinx-style permalink should "
"be added - Defaults to False"],
"permalink_class": ['headerlink',
'CSS class(es) used for the link. '
'Defaults to "headerlink"'],
"permalink_title": ["Permanent link",
"Title attribute of the permalink - "
"Defaults to 'Permanent link'"],
"baselevel": ['1', 'Base level for headers.'],
"slugify": [slugify,
"Function to generate anchors based on header text - "
"Defaults to the headerid ext's slugify function."],
'separator': ['-', 'Word separator. Defaults to "-".'],
"toc_depth": [6,
'Define the range of section levels to include in'
'the Table of Contents. A single integer (b) defines'
'the bottom section level (<h1>..<hb>) only.'
'A string consisting of two digits separated by a hyphen'
'in between ("2-5"), define the top (t) and the'
'bottom (b) (<ht>..<hb>). Defaults to `6` (bottom).'],
}
super().__init__(**kwargs)
def extendMarkdown(self, md):
md.registerExtension(self)
self.md = md
self.reset()
tocext = self.TreeProcessorClass(md, self.getConfigs())
md.treeprocessors.register(tocext, 'toc', 5)
def reset(self):
self.md.toc = ''
self.md.toc_tokens = []
def makeExtension(**kwargs): # pragma: no cover
return TocExtension(**kwargs)

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'''
WikiLinks Extension for Python-Markdown
======================================
Converts [[WikiLinks]] to relative links.
See <https://Python-Markdown.github.io/extensions/wikilinks>
for documentation.
Original code Copyright [Waylan Limberg](http://achinghead.com/).
All changes Copyright The Python Markdown Project
License: [BSD](https://opensource.org/licenses/bsd-license.php)
'''
from . import Extension
from ..inlinepatterns import InlineProcessor
import xml.etree.ElementTree as etree
import re
def build_url(label, base, end):
""" Build a URL from the label, a base, and an end. """
clean_label = re.sub(r'([ ]+_)|(_[ ]+)|([ ]+)', '_', label)
return '{}{}{}'.format(base, clean_label, end)
class WikiLinkExtension(Extension):
def __init__(self, **kwargs):
self.config = {
'base_url': ['/', 'String to append to beginning or URL.'],
'end_url': ['/', 'String to append to end of URL.'],
'html_class': ['wikilink', 'CSS hook. Leave blank for none.'],
'build_url': [build_url, 'Callable formats URL from label.'],
}
super().__init__(**kwargs)
def extendMarkdown(self, md):
self.md = md
# append to end of inline patterns
WIKILINK_RE = r'\[\[([\w0-9_ -]+)\]\]'
wikilinkPattern = WikiLinksInlineProcessor(WIKILINK_RE, self.getConfigs())
wikilinkPattern.md = md
md.inlinePatterns.register(wikilinkPattern, 'wikilink', 75)
class WikiLinksInlineProcessor(InlineProcessor):
def __init__(self, pattern, config):
super().__init__(pattern)
self.config = config
def handleMatch(self, m, data):
if m.group(1).strip():
base_url, end_url, html_class = self._getMeta()
label = m.group(1).strip()
url = self.config['build_url'](label, base_url, end_url)
a = etree.Element('a')
a.text = label
a.set('href', url)
if html_class:
a.set('class', html_class)
else:
a = ''
return a, m.start(0), m.end(0)
def _getMeta(self):
""" Return meta data or `config` data. """
base_url = self.config['base_url']
end_url = self.config['end_url']
html_class = self.config['html_class']
if hasattr(self.md, 'Meta'):
if 'wiki_base_url' in self.md.Meta:
base_url = self.md.Meta['wiki_base_url'][0]
if 'wiki_end_url' in self.md.Meta:
end_url = self.md.Meta['wiki_end_url'][0]
if 'wiki_html_class' in self.md.Meta:
html_class = self.md.Meta['wiki_html_class'][0]
return base_url, end_url, html_class
def makeExtension(**kwargs): # pragma: no cover
return WikiLinkExtension(**kwargs)

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"""
Python Markdown
A Python implementation of John Gruber's Markdown.
Documentation: https://python-markdown.github.io/
GitHub: https://github.com/Python-Markdown/markdown/
PyPI: https://pypi.org/project/Markdown/
Started by Manfred Stienstra (http://www.dwerg.net/).
Maintained for a few years by Yuri Takhteyev (http://www.freewisdom.org).
Currently maintained by Waylan Limberg (https://github.com/waylan),
Dmitry Shachnev (https://github.com/mitya57) and Isaac Muse (https://github.com/facelessuser).
Copyright 2007-2020 The Python Markdown Project (v. 1.7 and later)
Copyright 2004, 2005, 2006 Yuri Takhteyev (v. 0.2-1.6b)
Copyright 2004 Manfred Stienstra (the original version)
License: BSD (see LICENSE.md for details).
"""
import re
import importlib.util
import sys
# Import a copy of the html.parser lib as `htmlparser` so we can monkeypatch it.
# Users can still do `from html import parser` and get the default behavior.
spec = importlib.util.find_spec('html.parser')
htmlparser = importlib.util.module_from_spec(spec)
spec.loader.exec_module(htmlparser)
sys.modules['htmlparser'] = htmlparser
# Monkeypatch `HTMLParser` to only accept `?>` to close Processing Instructions.
htmlparser.piclose = re.compile(r'\?>')
# Monkeypatch `HTMLParser` to only recognize entity references with a closing semicolon.
htmlparser.entityref = re.compile(r'&([a-zA-Z][-.a-zA-Z0-9]*);')
# Monkeypatch `HTMLParser` to no longer support partial entities. We are always feeding a complete block,
# so the 'incomplete' functionality is unnecessary. As the `entityref` regex is run right before incomplete,
# and the two regex are the same, then incomplete will simply never match and we avoid the logic within.
htmlparser.incomplete = htmlparser.entityref
# Monkeypatch `HTMLParser` to not accept a backtick in a tag name, attribute name, or bare value.
htmlparser.locatestarttagend_tolerant = re.compile(r"""
<[a-zA-Z][^`\t\n\r\f />\x00]* # tag name <= added backtick here
(?:[\s/]* # optional whitespace before attribute name
(?:(?<=['"\s/])[^`\s/>][^\s/=>]* # attribute name <= added backtick here
(?:\s*=+\s* # value indicator
(?:'[^']*' # LITA-enclosed value
|"[^"]*" # LIT-enclosed value
|(?!['"])[^`>\s]* # bare value <= added backtick here
)
(?:\s*,)* # possibly followed by a comma
)?(?:\s|/(?!>))*
)*
)?
\s* # trailing whitespace
""", re.VERBOSE)
# Match a blank line at the start of a block of text (two newlines).
# The newlines may be preceded by additional whitespace.
blank_line_re = re.compile(r'^([ ]*\n){2}')
class HTMLExtractor(htmlparser.HTMLParser):
"""
Extract raw HTML from text.
The raw HTML is stored in the `htmlStash` of the Markdown instance passed
to `md` and the remaining text is stored in `cleandoc` as a list of strings.
"""
def __init__(self, md, *args, **kwargs):
if 'convert_charrefs' not in kwargs:
kwargs['convert_charrefs'] = False
# Block tags that should contain no content (self closing)
self.empty_tags = set(['hr'])
# This calls self.reset
super().__init__(*args, **kwargs)
self.md = md
def reset(self):
"""Reset this instance. Loses all unprocessed data."""
self.inraw = False
self.intail = False
self.stack = [] # When `inraw==True`, stack contains a list of tags
self._cache = []
self.cleandoc = []
super().reset()
def close(self):
"""Handle any buffered data."""
super().close()
if len(self.rawdata):
# Temp fix for https://bugs.python.org/issue41989
# TODO: remove this when the bug is fixed in all supported Python versions.
if self.convert_charrefs and not self.cdata_elem: # pragma: no cover
self.handle_data(htmlparser.unescape(self.rawdata))
else:
self.handle_data(self.rawdata)
# Handle any unclosed tags.
if len(self._cache):
self.cleandoc.append(self.md.htmlStash.store(''.join(self._cache)))
self._cache = []
@property
def line_offset(self):
"""Returns char index in `self.rawdata` for the start of the current line. """
if self.lineno > 1 and '\n' in self.rawdata:
m = re.match(r'([^\n]*\n){{{}}}'.format(self.lineno-1), self.rawdata)
if m:
return m.end()
else: # pragma: no cover
# Value of `self.lineno` must exceed total number of lines.
# Find index of beginning of last line.
return self.rawdata.rfind('\n')
return 0
def at_line_start(self):
"""
Returns True if current position is at start of line.
Allows for up to three blank spaces at start of line.
"""
if self.offset == 0:
return True
if self.offset > 3:
return False
# Confirm up to first 3 chars are whitespace
return self.rawdata[self.line_offset:self.line_offset + self.offset].strip() == ''
def get_endtag_text(self, tag):
"""
Returns the text of the end tag.
If it fails to extract the actual text from the raw data, it builds a closing tag with `tag`.
"""
# Attempt to extract actual tag from raw source text
start = self.line_offset + self.offset
m = htmlparser.endendtag.search(self.rawdata, start)
if m:
return self.rawdata[start:m.end()]
else: # pragma: no cover
# Failed to extract from raw data. Assume well formed and lowercase.
return '</{}>'.format(tag)
def handle_starttag(self, tag, attrs):
# Handle tags that should always be empty and do not specify a closing tag
if tag in self.empty_tags:
self.handle_startendtag(tag, attrs)
return
if self.md.is_block_level(tag) and (self.intail or (self.at_line_start() and not self.inraw)):
# Started a new raw block. Prepare stack.
self.inraw = True
self.cleandoc.append('\n')
text = self.get_starttag_text()
if self.inraw:
self.stack.append(tag)
self._cache.append(text)
else:
self.cleandoc.append(text)
if tag in self.CDATA_CONTENT_ELEMENTS:
# This is presumably a standalone tag in a code span (see #1036).
self.clear_cdata_mode()
def handle_endtag(self, tag):
text = self.get_endtag_text(tag)
if self.inraw:
self._cache.append(text)
if tag in self.stack:
# Remove tag from stack
while self.stack:
if self.stack.pop() == tag:
break
if len(self.stack) == 0:
# End of raw block.
if blank_line_re.match(self.rawdata[self.line_offset + self.offset + len(text):]):
# Preserve blank line and end of raw block.
self._cache.append('\n')
else:
# More content exists after `endtag`.
self.intail = True
# Reset stack.
self.inraw = False
self.cleandoc.append(self.md.htmlStash.store(''.join(self._cache)))
# Insert blank line between this and next line.
self.cleandoc.append('\n\n')
self._cache = []
else:
self.cleandoc.append(text)
def handle_data(self, data):
if self.intail and '\n' in data:
self.intail = False
if self.inraw:
self._cache.append(data)
else:
self.cleandoc.append(data)
def handle_empty_tag(self, data, is_block):
""" Handle empty tags (`<data>`). """
if self.inraw or self.intail:
# Append this to the existing raw block
self._cache.append(data)
elif self.at_line_start() and is_block:
# Handle this as a standalone raw block
if blank_line_re.match(self.rawdata[self.line_offset + self.offset + len(data):]):
# Preserve blank line after tag in raw block.
data += '\n'
else:
# More content exists after tag.
self.intail = True
item = self.cleandoc[-1] if self.cleandoc else ''
# If we only have one newline before block element, add another
if not item.endswith('\n\n') and item.endswith('\n'):
self.cleandoc.append('\n')
self.cleandoc.append(self.md.htmlStash.store(data))
# Insert blank line between this and next line.
self.cleandoc.append('\n\n')
else:
self.cleandoc.append(data)
def handle_startendtag(self, tag, attrs):
self.handle_empty_tag(self.get_starttag_text(), is_block=self.md.is_block_level(tag))
def handle_charref(self, name):
self.handle_empty_tag('&#{};'.format(name), is_block=False)
def handle_entityref(self, name):
self.handle_empty_tag('&{};'.format(name), is_block=False)
def handle_comment(self, data):
self.handle_empty_tag('<!--{}-->'.format(data), is_block=True)
def handle_decl(self, data):
self.handle_empty_tag('<!{}>'.format(data), is_block=True)
def handle_pi(self, data):
self.handle_empty_tag('<?{}?>'.format(data), is_block=True)
def unknown_decl(self, data):
end = ']]>' if data.startswith('CDATA[') else ']>'
self.handle_empty_tag('<![{}{}'.format(data, end), is_block=True)
def parse_pi(self, i):
if self.at_line_start() or self.intail:
return super().parse_pi(i)
# This is not the beginning of a raw block so treat as plain data
# and avoid consuming any tags which may follow (see #1066).
self.handle_data('<?')
return i + 2
def parse_html_declaration(self, i):
if self.at_line_start() or self.intail:
return super().parse_html_declaration(i)
# This is not the beginning of a raw block so treat as plain data
# and avoid consuming any tags which may follow (see #1066).
self.handle_data('<!')
return i + 2
# The rest has been copied from base class in standard lib to address #1036.
# As `__startag_text` is private, all references to it must be in this subclass.
# The last few lines of `parse_starttag` are reversed so that `handle_starttag`
# can override `cdata_mode` in certain situations (in a code span).
__starttag_text = None
def get_starttag_text(self):
"""Return full source of start tag: `<...>`."""
return self.__starttag_text
def parse_starttag(self, i): # pragma: no cover
self.__starttag_text = None
endpos = self.check_for_whole_start_tag(i)
if endpos < 0:
return endpos
rawdata = self.rawdata
self.__starttag_text = rawdata[i:endpos]
# Now parse the data between `i+1` and `j` into a tag and `attrs`
attrs = []
match = htmlparser.tagfind_tolerant.match(rawdata, i+1)
assert match, 'unexpected call to parse_starttag()'
k = match.end()
self.lasttag = tag = match.group(1).lower()
while k < endpos:
m = htmlparser.attrfind_tolerant.match(rawdata, k)
if not m:
break
attrname, rest, attrvalue = m.group(1, 2, 3)
if not rest:
attrvalue = None
elif attrvalue[:1] == '\'' == attrvalue[-1:] or \
attrvalue[:1] == '"' == attrvalue[-1:]: # noqa: E127
attrvalue = attrvalue[1:-1]
if attrvalue:
attrvalue = htmlparser.unescape(attrvalue)
attrs.append((attrname.lower(), attrvalue))
k = m.end()
end = rawdata[k:endpos].strip()
if end not in (">", "/>"):
lineno, offset = self.getpos()
if "\n" in self.__starttag_text:
lineno = lineno + self.__starttag_text.count("\n")
offset = len(self.__starttag_text) \
- self.__starttag_text.rfind("\n") # noqa: E127
else:
offset = offset + len(self.__starttag_text)
self.handle_data(rawdata[i:endpos])
return endpos
if end.endswith('/>'):
# XHTML-style empty tag: `<span attr="value" />`
self.handle_startendtag(tag, attrs)
else:
# *** set `cdata_mode` first so we can override it in `handle_starttag` (see #1036) ***
if tag in self.CDATA_CONTENT_ELEMENTS:
self.set_cdata_mode(tag)
self.handle_starttag(tag, attrs)
return endpos

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"""
Python Markdown
A Python implementation of John Gruber's Markdown.
Documentation: https://python-markdown.github.io/
GitHub: https://github.com/Python-Markdown/markdown/
PyPI: https://pypi.org/project/Markdown/
Started by Manfred Stienstra (http://www.dwerg.net/).
Maintained for a few years by Yuri Takhteyev (http://www.freewisdom.org).
Currently maintained by Waylan Limberg (https://github.com/waylan),
Dmitry Shachnev (https://github.com/mitya57) and Isaac Muse (https://github.com/facelessuser).
Copyright 2007-2018 The Python Markdown Project (v. 1.7 and later)
Copyright 2004, 2005, 2006 Yuri Takhteyev (v. 0.2-1.6b)
Copyright 2004 Manfred Stienstra (the original version)
License: BSD (see LICENSE.md for details).
INLINE PATTERNS
=============================================================================
Inline patterns such as *emphasis* are handled by means of auxiliary
objects, one per pattern. Pattern objects must be instances of classes
that extend markdown.Pattern. Each pattern object uses a single regular
expression and needs support the following methods:
pattern.getCompiledRegExp() # returns a regular expression
pattern.handleMatch(m) # takes a match object and returns
# an ElementTree element or just plain text
All of python markdown's built-in patterns subclass from Pattern,
but you can add additional patterns that don't.
Also note that all the regular expressions used by inline must
capture the whole block. For this reason, they all start with
`^(.*)` and end with `(.*)!`. In case with built-in expression
Pattern takes care of adding the `^(.*)` and `(.*)!`.
Finally, the order in which regular expressions are applied is very
important - e.g. if we first replace `http://.../` links with `<a>` tags
and _then_ try to replace inline html, we would end up with a mess.
So, we apply the expressions in the following order:
* escape and backticks have to go before everything else, so
that we can preempt any markdown patterns by escaping them.
* then we handle auto-links (must be done before inline html)
* then we handle inline HTML. At this point we will simply
replace all inline HTML strings with a placeholder and add
the actual HTML to a hash.
* then inline images (must be done before links)
* then bracketed links, first regular then reference-style
* finally we apply strong and emphasis
"""
from . import util
from collections import namedtuple
import re
import xml.etree.ElementTree as etree
try: # pragma: no cover
from html import entities
except ImportError: # pragma: no cover
import htmlentitydefs as entities
def build_inlinepatterns(md, **kwargs):
""" Build the default set of inline patterns for Markdown. """
inlinePatterns = util.Registry()
inlinePatterns.register(BacktickInlineProcessor(BACKTICK_RE), 'backtick', 190)
inlinePatterns.register(EscapeInlineProcessor(ESCAPE_RE, md), 'escape', 180)
inlinePatterns.register(ReferenceInlineProcessor(REFERENCE_RE, md), 'reference', 170)
inlinePatterns.register(LinkInlineProcessor(LINK_RE, md), 'link', 160)
inlinePatterns.register(ImageInlineProcessor(IMAGE_LINK_RE, md), 'image_link', 150)
inlinePatterns.register(
ImageReferenceInlineProcessor(IMAGE_REFERENCE_RE, md), 'image_reference', 140
)
inlinePatterns.register(
ShortReferenceInlineProcessor(REFERENCE_RE, md), 'short_reference', 130
)
inlinePatterns.register(
ShortImageReferenceInlineProcessor(IMAGE_REFERENCE_RE, md), 'short_image_ref', 125
)
inlinePatterns.register(AutolinkInlineProcessor(AUTOLINK_RE, md), 'autolink', 120)
inlinePatterns.register(AutomailInlineProcessor(AUTOMAIL_RE, md), 'automail', 110)
inlinePatterns.register(SubstituteTagInlineProcessor(LINE_BREAK_RE, 'br'), 'linebreak', 100)
inlinePatterns.register(HtmlInlineProcessor(HTML_RE, md), 'html', 90)
inlinePatterns.register(HtmlInlineProcessor(ENTITY_RE, md), 'entity', 80)
inlinePatterns.register(SimpleTextInlineProcessor(NOT_STRONG_RE), 'not_strong', 70)
inlinePatterns.register(AsteriskProcessor(r'\*'), 'em_strong', 60)
inlinePatterns.register(UnderscoreProcessor(r'_'), 'em_strong2', 50)
return inlinePatterns
"""
The actual regular expressions for patterns
-----------------------------------------------------------------------------
"""
NOIMG = r'(?<!\!)'
# `e=f()` or ``e=f("`")``
BACKTICK_RE = r'(?:(?<!\\)((?:\\{2})+)(?=`+)|(?<!\\)(`+)(.+?)(?<!`)\2(?!`))'
# `\<`
ESCAPE_RE = r'\\(.)'
# `*emphasis*`
EMPHASIS_RE = r'(\*)([^\*]+)\1'
# `**strong**`
STRONG_RE = r'(\*{2})(.+?)\1'
# `__smart__strong__`
SMART_STRONG_RE = r'(?<!\w)(_{2})(?!_)(.+?)(?<!_)\1(?!\w)'
# `_smart_emphasis_`
SMART_EMPHASIS_RE = r'(?<!\w)(_)(?!_)(.+?)(?<!_)\1(?!\w)'
# `__strong _em__`
SMART_STRONG_EM_RE = r'(?<!\w)(\_)\1(?!\1)(.+?)(?<!\w)\1(?!\1)(.+?)\1{3}(?!\w)'
# `***strongem***` or `***em*strong**`
EM_STRONG_RE = r'(\*)\1{2}(.+?)\1(.*?)\1{2}'
# `___strongem___` or `___em_strong__`
EM_STRONG2_RE = r'(_)\1{2}(.+?)\1(.*?)\1{2}'
# `***strong**em*`
STRONG_EM_RE = r'(\*)\1{2}(.+?)\1{2}(.*?)\1'
# `___strong__em_`
STRONG_EM2_RE = r'(_)\1{2}(.+?)\1{2}(.*?)\1'
# `**strong*em***`
STRONG_EM3_RE = r'(\*)\1(?!\1)([^*]+?)\1(?!\1)(.+?)\1{3}'
# `[text](url)` or `[text](<url>)` or `[text](url "title")`
LINK_RE = NOIMG + r'\['
# `![alttxt](http://x.com/)` or `![alttxt](<http://x.com/>)`
IMAGE_LINK_RE = r'\!\['
# `[Google][3]`
REFERENCE_RE = LINK_RE
# `![alt text][2]`
IMAGE_REFERENCE_RE = IMAGE_LINK_RE
# stand-alone `*` or `_`
NOT_STRONG_RE = r'((^|(?<=\s))(\*{1,3}|_{1,3})(?=\s|$))'
# `<http://www.123.com>`
AUTOLINK_RE = r'<((?:[Ff]|[Hh][Tt])[Tt][Pp][Ss]?://[^<>]*)>'
# `<me@example.com>`
AUTOMAIL_RE = r'<([^<> !]+@[^@<> ]+)>'
# `<...>`
HTML_RE = r'(<(\/?[a-zA-Z][^<>@ ]*( [^<>]*)?|!--(?:(?!<!--|-->).)*--)>)'
# `&#38;` (decimal) or `&#x26;` (hex) or `&amp;` (named)
ENTITY_RE = r'(&(?:\#[0-9]+|\#x[0-9a-fA-F]+|[a-zA-Z0-9]+);)'
# two spaces at end of line
LINE_BREAK_RE = r' \n'
def dequote(string):
"""Remove quotes from around a string."""
if ((string.startswith('"') and string.endswith('"')) or
(string.startswith("'") and string.endswith("'"))):
return string[1:-1]
else:
return string
class EmStrongItem(namedtuple('EmStrongItem', ['pattern', 'builder', 'tags'])):
"""Emphasis/strong pattern item."""
"""
The pattern classes
-----------------------------------------------------------------------------
"""
class Pattern: # pragma: no cover
"""Base class that inline patterns subclass. """
ANCESTOR_EXCLUDES = tuple()
def __init__(self, pattern, md=None):
"""
Create an instant of an inline pattern.
Keyword arguments:
* pattern: A regular expression that matches a pattern
"""
self.pattern = pattern
self.compiled_re = re.compile(r"^(.*?)%s(.*)$" % pattern,
re.DOTALL | re.UNICODE)
self.md = md
def getCompiledRegExp(self):
""" Return a compiled regular expression. """
return self.compiled_re
def handleMatch(self, m):
"""Return a ElementTree element from the given match.
Subclasses should override this method.
Keyword arguments:
* m: A re match object containing a match of the pattern.
"""
pass # pragma: no cover
def type(self):
""" Return class name, to define pattern type """
return self.__class__.__name__
def unescape(self, text):
""" Return unescaped text given text with an inline placeholder. """
try:
stash = self.md.treeprocessors['inline'].stashed_nodes
except KeyError: # pragma: no cover
return text
def get_stash(m):
id = m.group(1)
if id in stash:
value = stash.get(id)
if isinstance(value, str):
return value
else:
# An `etree` Element - return text content only
return ''.join(value.itertext())
return util.INLINE_PLACEHOLDER_RE.sub(get_stash, text)
class InlineProcessor(Pattern):
"""
Base class that inline patterns subclass.
This is the newer style inline processor that uses a more
efficient and flexible search approach.
"""
def __init__(self, pattern, md=None):
"""
Create an instant of an inline pattern.
Keyword arguments:
* pattern: A regular expression that matches a pattern
"""
self.pattern = pattern
self.compiled_re = re.compile(pattern, re.DOTALL | re.UNICODE)
# API for Markdown to pass `safe_mode` into instance
self.safe_mode = False
self.md = md
def handleMatch(self, m, data):
"""Return a ElementTree element from the given match and the
start and end index of the matched text.
If `start` and/or `end` are returned as `None`, it will be
assumed that the processor did not find a valid region of text.
Subclasses should override this method.
Keyword arguments:
* m: A re match object containing a match of the pattern.
* data: The buffer current under analysis
Returns:
* el: The ElementTree element, text or None.
* start: The start of the region that has been matched or None.
* end: The end of the region that has been matched or None.
"""
pass # pragma: no cover
class SimpleTextPattern(Pattern): # pragma: no cover
""" Return a simple text of group(2) of a Pattern. """
def handleMatch(self, m):
return m.group(2)
class SimpleTextInlineProcessor(InlineProcessor):
""" Return a simple text of group(1) of a Pattern. """
def handleMatch(self, m, data):
return m.group(1), m.start(0), m.end(0)
class EscapeInlineProcessor(InlineProcessor):
""" Return an escaped character. """
def handleMatch(self, m, data):
char = m.group(1)
if char in self.md.ESCAPED_CHARS:
return '{}{}{}'.format(util.STX, ord(char), util.ETX), m.start(0), m.end(0)
else:
return None, m.start(0), m.end(0)
class SimpleTagPattern(Pattern): # pragma: no cover
"""
Return element of type `tag` with a text attribute of group(3)
of a Pattern.
"""
def __init__(self, pattern, tag):
Pattern.__init__(self, pattern)
self.tag = tag
def handleMatch(self, m):
el = etree.Element(self.tag)
el.text = m.group(3)
return el
class SimpleTagInlineProcessor(InlineProcessor):
"""
Return element of type `tag` with a text attribute of group(2)
of a Pattern.
"""
def __init__(self, pattern, tag):
InlineProcessor.__init__(self, pattern)
self.tag = tag
def handleMatch(self, m, data): # pragma: no cover
el = etree.Element(self.tag)
el.text = m.group(2)
return el, m.start(0), m.end(0)
class SubstituteTagPattern(SimpleTagPattern): # pragma: no cover
""" Return an element of type `tag` with no children. """
def handleMatch(self, m):
return etree.Element(self.tag)
class SubstituteTagInlineProcessor(SimpleTagInlineProcessor):
""" Return an element of type `tag` with no children. """
def handleMatch(self, m, data):
return etree.Element(self.tag), m.start(0), m.end(0)
class BacktickInlineProcessor(InlineProcessor):
""" Return a `<code>` element containing the matching text. """
def __init__(self, pattern):
InlineProcessor.__init__(self, pattern)
self.ESCAPED_BSLASH = '{}{}{}'.format(util.STX, ord('\\'), util.ETX)
self.tag = 'code'
def handleMatch(self, m, data):
if m.group(3):
el = etree.Element(self.tag)
el.text = util.AtomicString(util.code_escape(m.group(3).strip()))
return el, m.start(0), m.end(0)
else:
return m.group(1).replace('\\\\', self.ESCAPED_BSLASH), m.start(0), m.end(0)
class DoubleTagPattern(SimpleTagPattern): # pragma: no cover
"""Return a ElementTree element nested in tag2 nested in tag1.
Useful for strong emphasis etc.
"""
def handleMatch(self, m):
tag1, tag2 = self.tag.split(",")
el1 = etree.Element(tag1)
el2 = etree.SubElement(el1, tag2)
el2.text = m.group(3)
if len(m.groups()) == 5:
el2.tail = m.group(4)
return el1
class DoubleTagInlineProcessor(SimpleTagInlineProcessor):
"""Return a ElementTree element nested in tag2 nested in tag1.
Useful for strong emphasis etc.
"""
def handleMatch(self, m, data): # pragma: no cover
tag1, tag2 = self.tag.split(",")
el1 = etree.Element(tag1)
el2 = etree.SubElement(el1, tag2)
el2.text = m.group(2)
if len(m.groups()) == 3:
el2.tail = m.group(3)
return el1, m.start(0), m.end(0)
class HtmlInlineProcessor(InlineProcessor):
""" Store raw inline html and return a placeholder. """
def handleMatch(self, m, data):
rawhtml = self.backslash_unescape(self.unescape(m.group(1)))
place_holder = self.md.htmlStash.store(rawhtml)
return place_holder, m.start(0), m.end(0)
def unescape(self, text):
""" Return unescaped text given text with an inline placeholder. """
try:
stash = self.md.treeprocessors['inline'].stashed_nodes
except KeyError: # pragma: no cover
return text
def get_stash(m):
id = m.group(1)
value = stash.get(id)
if value is not None:
try:
return self.md.serializer(value)
except Exception:
return r'\%s' % value
return util.INLINE_PLACEHOLDER_RE.sub(get_stash, text)
def backslash_unescape(self, text):
""" Return text with backslash escapes undone (backslashes are restored). """
try:
RE = self.md.treeprocessors['unescape'].RE
except KeyError: # pragma: no cover
return text
def _unescape(m):
return chr(int(m.group(1)))
return RE.sub(_unescape, text)
class AsteriskProcessor(InlineProcessor):
"""Emphasis processor for handling strong and em matches inside asterisks."""
PATTERNS = [
EmStrongItem(re.compile(EM_STRONG_RE, re.DOTALL | re.UNICODE), 'double', 'strong,em'),
EmStrongItem(re.compile(STRONG_EM_RE, re.DOTALL | re.UNICODE), 'double', 'em,strong'),
EmStrongItem(re.compile(STRONG_EM3_RE, re.DOTALL | re.UNICODE), 'double2', 'strong,em'),
EmStrongItem(re.compile(STRONG_RE, re.DOTALL | re.UNICODE), 'single', 'strong'),
EmStrongItem(re.compile(EMPHASIS_RE, re.DOTALL | re.UNICODE), 'single', 'em')
]
def build_single(self, m, tag, idx):
"""Return single tag."""
el1 = etree.Element(tag)
text = m.group(2)
self.parse_sub_patterns(text, el1, None, idx)
return el1
def build_double(self, m, tags, idx):
"""Return double tag."""
tag1, tag2 = tags.split(",")
el1 = etree.Element(tag1)
el2 = etree.Element(tag2)
text = m.group(2)
self.parse_sub_patterns(text, el2, None, idx)
el1.append(el2)
if len(m.groups()) == 3:
text = m.group(3)
self.parse_sub_patterns(text, el1, el2, idx)
return el1
def build_double2(self, m, tags, idx):
"""Return double tags (variant 2): `<strong>text <em>text</em></strong>`."""
tag1, tag2 = tags.split(",")
el1 = etree.Element(tag1)
el2 = etree.Element(tag2)
text = m.group(2)
self.parse_sub_patterns(text, el1, None, idx)
text = m.group(3)
el1.append(el2)
self.parse_sub_patterns(text, el2, None, idx)
return el1
def parse_sub_patterns(self, data, parent, last, idx):
"""
Parses sub patterns.
`data` (`str`):
text to evaluate.
`parent` (`etree.Element`):
Parent to attach text and sub elements to.
`last` (`etree.Element`):
Last appended child to parent. Can also be None if parent has no children.
`idx` (`int`):
Current pattern index that was used to evaluate the parent.
"""
offset = 0
pos = 0
length = len(data)
while pos < length:
# Find the start of potential emphasis or strong tokens
if self.compiled_re.match(data, pos):
matched = False
# See if the we can match an emphasis/strong pattern
for index, item in enumerate(self.PATTERNS):
# Only evaluate patterns that are after what was used on the parent
if index <= idx:
continue
m = item.pattern.match(data, pos)
if m:
# Append child nodes to parent
# Text nodes should be appended to the last
# child if present, and if not, it should
# be added as the parent's text node.
text = data[offset:m.start(0)]
if text:
if last is not None:
last.tail = text
else:
parent.text = text
el = self.build_element(m, item.builder, item.tags, index)
parent.append(el)
last = el
# Move our position past the matched hunk
offset = pos = m.end(0)
matched = True
if not matched:
# We matched nothing, move on to the next character
pos += 1
else:
# Increment position as no potential emphasis start was found.
pos += 1
# Append any leftover text as a text node.
text = data[offset:]
if text:
if last is not None:
last.tail = text
else:
parent.text = text
def build_element(self, m, builder, tags, index):
"""Element builder."""
if builder == 'double2':
return self.build_double2(m, tags, index)
elif builder == 'double':
return self.build_double(m, tags, index)
else:
return self.build_single(m, tags, index)
def handleMatch(self, m, data):
"""Parse patterns."""
el = None
start = None
end = None
for index, item in enumerate(self.PATTERNS):
m1 = item.pattern.match(data, m.start(0))
if m1:
start = m1.start(0)
end = m1.end(0)
el = self.build_element(m1, item.builder, item.tags, index)
break
return el, start, end
class UnderscoreProcessor(AsteriskProcessor):
"""Emphasis processor for handling strong and em matches inside underscores."""
PATTERNS = [
EmStrongItem(re.compile(EM_STRONG2_RE, re.DOTALL | re.UNICODE), 'double', 'strong,em'),
EmStrongItem(re.compile(STRONG_EM2_RE, re.DOTALL | re.UNICODE), 'double', 'em,strong'),
EmStrongItem(re.compile(SMART_STRONG_EM_RE, re.DOTALL | re.UNICODE), 'double2', 'strong,em'),
EmStrongItem(re.compile(SMART_STRONG_RE, re.DOTALL | re.UNICODE), 'single', 'strong'),
EmStrongItem(re.compile(SMART_EMPHASIS_RE, re.DOTALL | re.UNICODE), 'single', 'em')
]
class LinkInlineProcessor(InlineProcessor):
""" Return a link element from the given match. """
RE_LINK = re.compile(r'''\(\s*(?:(<[^<>]*>)\s*(?:('[^']*'|"[^"]*")\s*)?\))?''', re.DOTALL | re.UNICODE)
RE_TITLE_CLEAN = re.compile(r'\s')
def handleMatch(self, m, data):
text, index, handled = self.getText(data, m.end(0))
if not handled:
return None, None, None
href, title, index, handled = self.getLink(data, index)
if not handled:
return None, None, None
el = etree.Element("a")
el.text = text
el.set("href", href)
if title is not None:
el.set("title", title)
return el, m.start(0), index
def getLink(self, data, index):
"""Parse data between `()` of `[Text]()` allowing recursive `()`. """
href = ''
title = None
handled = False
m = self.RE_LINK.match(data, pos=index)
if m and m.group(1):
# Matches [Text](<link> "title")
href = m.group(1)[1:-1].strip()
if m.group(2):
title = m.group(2)[1:-1]
index = m.end(0)
handled = True
elif m:
# Track bracket nesting and index in string
bracket_count = 1
backtrack_count = 1
start_index = m.end()
index = start_index
last_bracket = -1
# Primary (first found) quote tracking.
quote = None
start_quote = -1
exit_quote = -1
ignore_matches = False
# Secondary (second found) quote tracking.
alt_quote = None
start_alt_quote = -1
exit_alt_quote = -1
# Track last character
last = ''
for pos in range(index, len(data)):
c = data[pos]
if c == '(':
# Count nested (
# Don't increment the bracket count if we are sure we're in a title.
if not ignore_matches:
bracket_count += 1
elif backtrack_count > 0:
backtrack_count -= 1
elif c == ')':
# Match nested ) to (
# Don't decrement if we are sure we are in a title that is unclosed.
if ((exit_quote != -1 and quote == last) or (exit_alt_quote != -1 and alt_quote == last)):
bracket_count = 0
elif not ignore_matches:
bracket_count -= 1
elif backtrack_count > 0:
backtrack_count -= 1
# We've found our backup end location if the title doesn't resolve.
if backtrack_count == 0:
last_bracket = index + 1
elif c in ("'", '"'):
# Quote has started
if not quote:
# We'll assume we are now in a title.
# Brackets are quoted, so no need to match them (except for the final one).
ignore_matches = True
backtrack_count = bracket_count
bracket_count = 1
start_quote = index + 1
quote = c
# Secondary quote (in case the first doesn't resolve): [text](link'"title")
elif c != quote and not alt_quote:
start_alt_quote = index + 1
alt_quote = c
# Update primary quote match
elif c == quote:
exit_quote = index + 1
# Update secondary quote match
elif alt_quote and c == alt_quote:
exit_alt_quote = index + 1
index += 1
# Link is closed, so let's break out of the loop
if bracket_count == 0:
# Get the title if we closed a title string right before link closed
if exit_quote >= 0 and quote == last:
href = data[start_index:start_quote - 1]
title = ''.join(data[start_quote:exit_quote - 1])
elif exit_alt_quote >= 0 and alt_quote == last:
href = data[start_index:start_alt_quote - 1]
title = ''.join(data[start_alt_quote:exit_alt_quote - 1])
else:
href = data[start_index:index - 1]
break
if c != ' ':
last = c
# We have a scenario: `[test](link"notitle)`
# When we enter a string, we stop tracking bracket resolution in the main counter,
# but we do keep a backup counter up until we discover where we might resolve all brackets
# if the title string fails to resolve.
if bracket_count != 0 and backtrack_count == 0:
href = data[start_index:last_bracket - 1]
index = last_bracket
bracket_count = 0
handled = bracket_count == 0
if title is not None:
title = self.RE_TITLE_CLEAN.sub(' ', dequote(self.unescape(title.strip())))
href = self.unescape(href).strip()
return href, title, index, handled
def getText(self, data, index):
"""Parse the content between `[]` of the start of an image or link
resolving nested square brackets.
"""
bracket_count = 1
text = []
for pos in range(index, len(data)):
c = data[pos]
if c == ']':
bracket_count -= 1
elif c == '[':
bracket_count += 1
index += 1
if bracket_count == 0:
break
text.append(c)
return ''.join(text), index, bracket_count == 0
class ImageInlineProcessor(LinkInlineProcessor):
""" Return a `img` element from the given match. """
def handleMatch(self, m, data):
text, index, handled = self.getText(data, m.end(0))
if not handled:
return None, None, None
src, title, index, handled = self.getLink(data, index)
if not handled:
return None, None, None
el = etree.Element("img")
el.set("src", src)
if title is not None:
el.set("title", title)
el.set('alt', self.unescape(text))
return el, m.start(0), index
class ReferenceInlineProcessor(LinkInlineProcessor):
""" Match to a stored reference and return link element. """
NEWLINE_CLEANUP_RE = re.compile(r'\s+', re.MULTILINE)
RE_LINK = re.compile(r'\s?\[([^\]]*)\]', re.DOTALL | re.UNICODE)
def handleMatch(self, m, data):
text, index, handled = self.getText(data, m.end(0))
if not handled:
return None, None, None
id, end, handled = self.evalId(data, index, text)
if not handled:
return None, None, None
# Clean up line breaks in id
id = self.NEWLINE_CLEANUP_RE.sub(' ', id)
if id not in self.md.references: # ignore undefined refs
return None, m.start(0), end
href, title = self.md.references[id]
return self.makeTag(href, title, text), m.start(0), end
def evalId(self, data, index, text):
"""
Evaluate the id portion of [ref][id].
If [ref][] use [ref].
"""
m = self.RE_LINK.match(data, pos=index)
if not m:
return None, index, False
else:
id = m.group(1).lower()
end = m.end(0)
if not id:
id = text.lower()
return id, end, True
def makeTag(self, href, title, text):
el = etree.Element('a')
el.set('href', href)
if title:
el.set('title', title)
el.text = text
return el
class ShortReferenceInlineProcessor(ReferenceInlineProcessor):
"""Short form of reference: [google]. """
def evalId(self, data, index, text):
"""Evaluate the id from of [ref] """
return text.lower(), index, True
class ImageReferenceInlineProcessor(ReferenceInlineProcessor):
""" Match to a stored reference and return `img` element. """
def makeTag(self, href, title, text):
el = etree.Element("img")
el.set("src", href)
if title:
el.set("title", title)
el.set("alt", self.unescape(text))
return el
class ShortImageReferenceInlineProcessor(ImageReferenceInlineProcessor):
""" Short form of image reference: `![ref]`. """
def evalId(self, data, index, text):
"""Evaluate the id from of [ref] """
return text.lower(), index, True
class AutolinkInlineProcessor(InlineProcessor):
""" Return a link Element given an auto-link (`<http://example/com>`). """
def handleMatch(self, m, data):
el = etree.Element("a")
el.set('href', self.unescape(m.group(1)))
el.text = util.AtomicString(m.group(1))
return el, m.start(0), m.end(0)
class AutomailInlineProcessor(InlineProcessor):
"""
Return a `mailto` link Element given an auto-mail link (`<foo@example.com>`).
"""
def handleMatch(self, m, data):
el = etree.Element('a')
email = self.unescape(m.group(1))
if email.startswith("mailto:"):
email = email[len("mailto:"):]
def codepoint2name(code):
"""Return entity definition by code, or the code if not defined."""
entity = entities.codepoint2name.get(code)
if entity:
return "{}{};".format(util.AMP_SUBSTITUTE, entity)
else:
return "%s#%d;" % (util.AMP_SUBSTITUTE, code)
letters = [codepoint2name(ord(letter)) for letter in email]
el.text = util.AtomicString(''.join(letters))
mailto = "mailto:" + email
mailto = "".join([util.AMP_SUBSTITUTE + '#%d;' %
ord(letter) for letter in mailto])
el.set('href', mailto)
return el, m.start(0), m.end(0)

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"""
Python Markdown
A Python implementation of John Gruber's Markdown.
Documentation: https://python-markdown.github.io/
GitHub: https://github.com/Python-Markdown/markdown/
PyPI: https://pypi.org/project/Markdown/
Started by Manfred Stienstra (http://www.dwerg.net/).
Maintained for a few years by Yuri Takhteyev (http://www.freewisdom.org).
Currently maintained by Waylan Limberg (https://github.com/waylan),
Dmitry Shachnev (https://github.com/mitya57) and Isaac Muse (https://github.com/facelessuser).
Copyright 2007-2018 The Python Markdown Project (v. 1.7 and later)
Copyright 2004, 2005, 2006 Yuri Takhteyev (v. 0.2-1.6b)
Copyright 2004 Manfred Stienstra (the original version)
License: BSD (see LICENSE.md for details).
POST-PROCESSORS
=============================================================================
Markdown also allows post-processors, which are similar to preprocessors in
that they need to implement a "run" method. However, they are run after core
processing.
"""
from collections import OrderedDict
from . import util
import re
def build_postprocessors(md, **kwargs):
""" Build the default postprocessors for Markdown. """
postprocessors = util.Registry()
postprocessors.register(RawHtmlPostprocessor(md), 'raw_html', 30)
postprocessors.register(AndSubstitutePostprocessor(), 'amp_substitute', 20)
return postprocessors
class Postprocessor(util.Processor):
"""
Postprocessors are run after the ElementTree it converted back into text.
Each Postprocessor implements a "run" method that takes a pointer to a
text string, modifies it as necessary and returns a text string.
Postprocessors must extend markdown.Postprocessor.
"""
def run(self, text):
"""
Subclasses of Postprocessor should implement a `run` method, which
takes the html document as a single text string and returns a
(possibly modified) string.
"""
pass # pragma: no cover
class RawHtmlPostprocessor(Postprocessor):
""" Restore raw html to the document. """
BLOCK_LEVEL_REGEX = re.compile(r'^\<\/?([^ >]+)')
def run(self, text):
""" Iterate over html stash and restore html. """
replacements = OrderedDict()
for i in range(self.md.htmlStash.html_counter):
html = self.stash_to_string(self.md.htmlStash.rawHtmlBlocks[i])
if self.isblocklevel(html):
replacements["<p>{}</p>".format(
self.md.htmlStash.get_placeholder(i))] = html
replacements[self.md.htmlStash.get_placeholder(i)] = html
def substitute_match(m):
key = m.group(0)
if key not in replacements:
if key[3:-4] in replacements:
return f'<p>{ replacements[key[3:-4]] }</p>'
else:
return key
return replacements[key]
if replacements:
base_placeholder = util.HTML_PLACEHOLDER % r'([0-9]+)'
pattern = re.compile(f'<p>{ base_placeholder }</p>|{ base_placeholder }')
processed_text = pattern.sub(substitute_match, text)
else:
return text
if processed_text == text:
return processed_text
else:
return self.run(processed_text)
def isblocklevel(self, html):
m = self.BLOCK_LEVEL_REGEX.match(html)
if m:
if m.group(1)[0] in ('!', '?', '@', '%'):
# Comment, PHP etc...
return True
return self.md.is_block_level(m.group(1))
return False
def stash_to_string(self, text):
""" Convert a stashed object to a string. """
return str(text)
class AndSubstitutePostprocessor(Postprocessor):
""" Restore valid entities """
def run(self, text):
text = text.replace(util.AMP_SUBSTITUTE, "&")
return text
@util.deprecated(
"This class will be removed in the future; "
"use 'treeprocessors.UnescapeTreeprocessor' instead."
)
class UnescapePostprocessor(Postprocessor):
""" Restore escaped chars """
RE = re.compile(r'{}(\d+){}'.format(util.STX, util.ETX))
def unescape(self, m):
return chr(int(m.group(1)))
def run(self, text):
return self.RE.sub(self.unescape, text)

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"""
Python Markdown
A Python implementation of John Gruber's Markdown.
Documentation: https://python-markdown.github.io/
GitHub: https://github.com/Python-Markdown/markdown/
PyPI: https://pypi.org/project/Markdown/
Started by Manfred Stienstra (http://www.dwerg.net/).
Maintained for a few years by Yuri Takhteyev (http://www.freewisdom.org).
Currently maintained by Waylan Limberg (https://github.com/waylan),
Dmitry Shachnev (https://github.com/mitya57) and Isaac Muse (https://github.com/facelessuser).
Copyright 2007-2018 The Python Markdown Project (v. 1.7 and later)
Copyright 2004, 2005, 2006 Yuri Takhteyev (v. 0.2-1.6b)
Copyright 2004 Manfred Stienstra (the original version)
License: BSD (see LICENSE.md for details).
PRE-PROCESSORS
=============================================================================
Preprocessors work on source text before we start doing anything too
complicated.
"""
from . import util
from .htmlparser import HTMLExtractor
import re
def build_preprocessors(md, **kwargs):
""" Build the default set of preprocessors used by Markdown. """
preprocessors = util.Registry()
preprocessors.register(NormalizeWhitespace(md), 'normalize_whitespace', 30)
preprocessors.register(HtmlBlockPreprocessor(md), 'html_block', 20)
return preprocessors
class Preprocessor(util.Processor):
"""
Preprocessors are run after the text is broken into lines.
Each preprocessor implements a "run" method that takes a pointer to a
list of lines of the document, modifies it as necessary and returns
either the same pointer or a pointer to a new list.
Preprocessors must extend markdown.Preprocessor.
"""
def run(self, lines):
"""
Each subclass of Preprocessor should override the `run` method, which
takes the document as a list of strings split by newlines and returns
the (possibly modified) list of lines.
"""
pass # pragma: no cover
class NormalizeWhitespace(Preprocessor):
""" Normalize whitespace for consistent parsing. """
def run(self, lines):
source = '\n'.join(lines)
source = source.replace(util.STX, "").replace(util.ETX, "")
source = source.replace("\r\n", "\n").replace("\r", "\n") + "\n\n"
source = source.expandtabs(self.md.tab_length)
source = re.sub(r'(?<=\n) +\n', '\n', source)
return source.split('\n')
class HtmlBlockPreprocessor(Preprocessor):
"""Remove html blocks from the text and store them for later retrieval."""
def run(self, lines):
source = '\n'.join(lines)
parser = HTMLExtractor(self.md)
parser.feed(source)
parser.close()
return ''.join(parser.cleandoc).split('\n')

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# Add x/html serialization to `Elementree`
# Taken from ElementTree 1.3 preview with slight modifications
#
# Copyright (c) 1999-2007 by Fredrik Lundh. All rights reserved.
#
# fredrik@pythonware.com
# https://www.pythonware.com/
#
# --------------------------------------------------------------------
# The ElementTree toolkit is
#
# Copyright (c) 1999-2007 by Fredrik Lundh
#
# By obtaining, using, and/or copying this software and/or its
# associated documentation, you agree that you have read, understood,
# and will comply with the following terms and conditions:
#
# Permission to use, copy, modify, and distribute this software and
# its associated documentation for any purpose and without fee is
# hereby granted, provided that the above copyright notice appears in
# all copies, and that both that copyright notice and this permission
# notice appear in supporting documentation, and that the name of
# Secret Labs AB or the author not be used in advertising or publicity
# pertaining to distribution of the software without specific, written
# prior permission.
#
# SECRET LABS AB AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
# TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANT-
# ABILITY AND FITNESS. IN NO EVENT SHALL SECRET LABS AB OR THE AUTHOR
# BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
# OF THIS SOFTWARE.
# --------------------------------------------------------------------
from xml.etree.ElementTree import ProcessingInstruction
from xml.etree.ElementTree import Comment, ElementTree, QName
import re
__all__ = ['to_html_string', 'to_xhtml_string']
HTML_EMPTY = ("area", "base", "basefont", "br", "col", "frame", "hr",
"img", "input", "isindex", "link", "meta", "param")
RE_AMP = re.compile(r'&(?!(?:\#[0-9]+|\#x[0-9a-f]+|[0-9a-z]+);)', re.I)
try:
HTML_EMPTY = set(HTML_EMPTY)
except NameError: # pragma: no cover
pass
def _raise_serialization_error(text): # pragma: no cover
raise TypeError(
"cannot serialize {!r} (type {})".format(text, type(text).__name__)
)
def _escape_cdata(text):
# escape character data
try:
# it's worth avoiding do-nothing calls for strings that are
# shorter than 500 character, or so. assume that's, by far,
# the most common case in most applications.
if "&" in text:
# Only replace & when not part of an entity
text = RE_AMP.sub('&amp;', text)
if "<" in text:
text = text.replace("<", "&lt;")
if ">" in text:
text = text.replace(">", "&gt;")
return text
except (TypeError, AttributeError): # pragma: no cover
_raise_serialization_error(text)
def _escape_attrib(text):
# escape attribute value
try:
if "&" in text:
# Only replace & when not part of an entity
text = RE_AMP.sub('&amp;', text)
if "<" in text:
text = text.replace("<", "&lt;")
if ">" in text:
text = text.replace(">", "&gt;")
if "\"" in text:
text = text.replace("\"", "&quot;")
if "\n" in text:
text = text.replace("\n", "&#10;")
return text
except (TypeError, AttributeError): # pragma: no cover
_raise_serialization_error(text)
def _escape_attrib_html(text):
# escape attribute value
try:
if "&" in text:
# Only replace & when not part of an entity
text = RE_AMP.sub('&amp;', text)
if "<" in text:
text = text.replace("<", "&lt;")
if ">" in text:
text = text.replace(">", "&gt;")
if "\"" in text:
text = text.replace("\"", "&quot;")
return text
except (TypeError, AttributeError): # pragma: no cover
_raise_serialization_error(text)
def _serialize_html(write, elem, format):
tag = elem.tag
text = elem.text
if tag is Comment:
write("<!--%s-->" % _escape_cdata(text))
elif tag is ProcessingInstruction:
write("<?%s?>" % _escape_cdata(text))
elif tag is None:
if text:
write(_escape_cdata(text))
for e in elem:
_serialize_html(write, e, format)
else:
namespace_uri = None
if isinstance(tag, QName):
# `QNAME` objects store their data as a string: `{uri}tag`
if tag.text[:1] == "{":
namespace_uri, tag = tag.text[1:].split("}", 1)
else:
raise ValueError('QName objects must define a tag.')
write("<" + tag)
items = elem.items()
if items:
items = sorted(items) # lexical order
for k, v in items:
if isinstance(k, QName):
# Assume a text only `QName`
k = k.text
if isinstance(v, QName):
# Assume a text only `QName`
v = v.text
else:
v = _escape_attrib_html(v)
if k == v and format == 'html':
# handle boolean attributes
write(" %s" % v)
else:
write(' {}="{}"'.format(k, v))
if namespace_uri:
write(' xmlns="%s"' % (_escape_attrib(namespace_uri)))
if format == "xhtml" and tag.lower() in HTML_EMPTY:
write(" />")
else:
write(">")
if text:
if tag.lower() in ["script", "style"]:
write(text)
else:
write(_escape_cdata(text))
for e in elem:
_serialize_html(write, e, format)
if tag.lower() not in HTML_EMPTY:
write("</" + tag + ">")
if elem.tail:
write(_escape_cdata(elem.tail))
def _write_html(root, format="html"):
assert root is not None
data = []
write = data.append
_serialize_html(write, root, format)
return "".join(data)
# --------------------------------------------------------------------
# public functions
def to_html_string(element):
return _write_html(ElementTree(element).getroot(), format="html")
def to_xhtml_string(element):
return _write_html(ElementTree(element).getroot(), format="xhtml")

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"""
Python Markdown
A Python implementation of John Gruber's Markdown.
Documentation: https://python-markdown.github.io/
GitHub: https://github.com/Python-Markdown/markdown/
PyPI: https://pypi.org/project/Markdown/
Started by Manfred Stienstra (http://www.dwerg.net/).
Maintained for a few years by Yuri Takhteyev (http://www.freewisdom.org).
Currently maintained by Waylan Limberg (https://github.com/waylan),
Dmitry Shachnev (https://github.com/mitya57) and Isaac Muse (https://github.com/facelessuser).
Copyright 2007-2018 The Python Markdown Project (v. 1.7 and later)
Copyright 2004, 2005, 2006 Yuri Takhteyev (v. 0.2-1.6b)
Copyright 2004 Manfred Stienstra (the original version)
License: BSD (see LICENSE.md for details).
"""
import os
import sys
import unittest
import textwrap
from . import markdown, Markdown, util
try:
import tidylib
except ImportError:
tidylib = None
__all__ = ['TestCase', 'LegacyTestCase', 'Kwargs']
class TestCase(unittest.TestCase):
"""
A `unittest.TestCase` subclass with helpers for testing Markdown output.
Define `default_kwargs` as a dict of keywords to pass to Markdown for each
test. The defaults can be overridden on individual tests.
The `assertMarkdownRenders` method accepts the source text, the expected
output, and any keywords to pass to Markdown. The `default_kwargs` are used
except where overridden by `kwargs`. The output and expected output are passed
to `TestCase.assertMultiLineEqual`. An `AssertionError` is raised with a diff
if the actual output does not equal the expected output.
The `dedent` method is available to dedent triple-quoted strings if
necessary.
In all other respects, behaves as `unittest.TestCase`.
"""
default_kwargs = {}
def assertMarkdownRenders(self, source, expected, expected_attrs=None, **kwargs):
"""
Test that source Markdown text renders to expected output with given keywords.
`expected_attrs` accepts a dict. Each key should be the name of an attribute
on the `Markdown` instance and the value should be the expected value after
the source text is parsed by Markdown. After the expected output is tested,
the expected value for each attribute is compared against the actual
attribute of the `Markdown` instance using `TestCase.assertEqual`.
"""
expected_attrs = expected_attrs or {}
kws = self.default_kwargs.copy()
kws.update(kwargs)
md = Markdown(**kws)
output = md.convert(source)
self.assertMultiLineEqual(output, expected)
for key, value in expected_attrs.items():
self.assertEqual(getattr(md, key), value)
def dedent(self, text):
"""
Dedent text.
"""
# TODO: If/when actual output ends with a newline, then use:
# return textwrap.dedent(text.strip('/n'))
return textwrap.dedent(text).strip()
class recursionlimit:
"""
A context manager which temporarily modifies the Python recursion limit.
The testing framework, coverage, etc. may add an arbitrary number of levels to the depth. To maintain consistency
in the tests, the current stack depth is determined when called, then added to the provided limit.
Example usage:
with recursionlimit(20):
# test code here
See https://stackoverflow.com/a/50120316/866026
"""
def __init__(self, limit):
self.limit = util._get_stack_depth() + limit
self.old_limit = sys.getrecursionlimit()
def __enter__(self):
sys.setrecursionlimit(self.limit)
def __exit__(self, type, value, tb):
sys.setrecursionlimit(self.old_limit)
#########################
# Legacy Test Framework #
#########################
class Kwargs(dict):
""" A dict like class for holding keyword arguments. """
pass
def _normalize_whitespace(text):
""" Normalize whitespace for a string of html using `tidylib`. """
output, errors = tidylib.tidy_fragment(text, options={
'drop_empty_paras': 0,
'fix_backslash': 0,
'fix_bad_comments': 0,
'fix_uri': 0,
'join_styles': 0,
'lower_literals': 0,
'merge_divs': 0,
'output_xhtml': 1,
'quote_ampersand': 0,
'newline': 'LF'
})
return output
class LegacyTestMeta(type):
def __new__(cls, name, bases, dct):
def generate_test(infile, outfile, normalize, kwargs):
def test(self):
with open(infile, encoding="utf-8") as f:
input = f.read()
with open(outfile, encoding="utf-8") as f:
# Normalize line endings
# (on Windows, git may have altered line endings).
expected = f.read().replace("\r\n", "\n")
output = markdown(input, **kwargs)
if tidylib and normalize:
try:
expected = _normalize_whitespace(expected)
output = _normalize_whitespace(output)
except OSError:
self.skipTest("Tidylib's c library not available.")
elif normalize:
self.skipTest('Tidylib not available.')
self.assertMultiLineEqual(output, expected)
return test
location = dct.get('location', '')
exclude = dct.get('exclude', [])
normalize = dct.get('normalize', False)
input_ext = dct.get('input_ext', '.txt')
output_ext = dct.get('output_ext', '.html')
kwargs = dct.get('default_kwargs', Kwargs())
if os.path.isdir(location):
for file in os.listdir(location):
infile = os.path.join(location, file)
if os.path.isfile(infile):
tname, ext = os.path.splitext(file)
if ext == input_ext:
outfile = os.path.join(location, tname + output_ext)
tname = tname.replace(' ', '_').replace('-', '_')
kws = kwargs.copy()
if tname in dct:
kws.update(dct[tname])
test_name = 'test_%s' % tname
if tname not in exclude:
dct[test_name] = generate_test(infile, outfile, normalize, kws)
else:
dct[test_name] = unittest.skip('Excluded')(lambda: None)
return type.__new__(cls, name, bases, dct)
class LegacyTestCase(unittest.TestCase, metaclass=LegacyTestMeta):
"""
A `unittest.TestCase` subclass for running Markdown's legacy file-based tests.
A subclass should define various properties which point to a directory of
text-based test files and define various behaviors/defaults for those tests.
The following properties are supported:
`location`: A path to the directory of test files. An absolute path is preferred.
`exclude`: A list of tests to exclude. Each test name should comprise the filename
without an extension.
`normalize`: A boolean value indicating if the HTML should be normalized.
Default: `False`.
`input_ext`: A string containing the file extension of input files. Default: `.txt`.
`output_ext`: A string containing the file extension of expected output files.
Default: `html`.
`default_kwargs`: A `Kwargs` instance which stores the default set of keyword
arguments for all test files in the directory.
In addition, properties can be defined for each individual set of test files within
the directory. The property should be given the name of the file without the file
extension. Any spaces and dashes in the filename should be replaced with
underscores. The value of the property should be a `Kwargs` instance which
contains the keyword arguments that should be passed to `Markdown` for that
test file. The keyword arguments will "update" the `default_kwargs`.
When the class instance is created, it will walk the given directory and create
a separate `Unitttest` for each set of test files using the naming scheme:
`test_filename`. One `Unittest` will be run for each set of input and output files.
"""
pass

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"""
Python Markdown
A Python implementation of John Gruber's Markdown.
Documentation: https://python-markdown.github.io/
GitHub: https://github.com/Python-Markdown/markdown/
PyPI: https://pypi.org/project/Markdown/
Started by Manfred Stienstra (http://www.dwerg.net/).
Maintained for a few years by Yuri Takhteyev (http://www.freewisdom.org).
Currently maintained by Waylan Limberg (https://github.com/waylan),
Dmitry Shachnev (https://github.com/mitya57) and Isaac Muse (https://github.com/facelessuser).
Copyright 2007-2018 The Python Markdown Project (v. 1.7 and later)
Copyright 2004, 2005, 2006 Yuri Takhteyev (v. 0.2-1.6b)
Copyright 2004 Manfred Stienstra (the original version)
License: BSD (see LICENSE.md for details).
"""
import re
import xml.etree.ElementTree as etree
from . import util
from . import inlinepatterns
def build_treeprocessors(md, **kwargs):
""" Build the default `treeprocessors` for Markdown. """
treeprocessors = util.Registry()
treeprocessors.register(InlineProcessor(md), 'inline', 20)
treeprocessors.register(PrettifyTreeprocessor(md), 'prettify', 10)
treeprocessors.register(UnescapeTreeprocessor(md), 'unescape', 0)
return treeprocessors
def isString(s):
""" Check if it's string """
if not isinstance(s, util.AtomicString):
return isinstance(s, str)
return False
class Treeprocessor(util.Processor):
"""
`Treeprocessor`s are run on the `ElementTree` object before serialization.
Each `Treeprocessor` implements a `run` method that takes a pointer to an
`ElementTree`, modifies it as necessary and returns an `ElementTree`
object.
`Treeprocessors` must extend `markdown.Treeprocessor`.
"""
def run(self, root):
"""
Subclasses of `Treeprocessor` should implement a `run` method, which
takes a root `ElementTree`. This method can return another `ElementTree`
object, and the existing root `ElementTree `will be replaced, or it can
modify the current tree and return `None`.
"""
pass # pragma: no cover
class InlineProcessor(Treeprocessor):
"""
A `Treeprocessor` that traverses a tree, applying inline patterns.
"""
def __init__(self, md):
self.__placeholder_prefix = util.INLINE_PLACEHOLDER_PREFIX
self.__placeholder_suffix = util.ETX
self.__placeholder_length = 4 + len(self.__placeholder_prefix) \
+ len(self.__placeholder_suffix)
self.__placeholder_re = util.INLINE_PLACEHOLDER_RE
self.md = md
self.inlinePatterns = md.inlinePatterns
self.ancestors = []
def __makePlaceholder(self, type):
""" Generate a placeholder """
id = "%04d" % len(self.stashed_nodes)
hash = util.INLINE_PLACEHOLDER % id
return hash, id
def __findPlaceholder(self, data, index):
"""
Extract id from data string, start from index
Keyword arguments:
* `data`: string
* `index`: index, from which we start search
Returns: placeholder id and string index, after the found placeholder.
"""
m = self.__placeholder_re.search(data, index)
if m:
return m.group(1), m.end()
else:
return None, index + 1
def __stashNode(self, node, type):
""" Add node to stash """
placeholder, id = self.__makePlaceholder(type)
self.stashed_nodes[id] = node
return placeholder
def __handleInline(self, data, patternIndex=0):
"""
Process string with inline patterns and replace it
with placeholders
Keyword arguments:
* `data`: A line of Markdown text
* `patternIndex`: The index of the `inlinePattern` to start with
Returns: String with placeholders.
"""
if not isinstance(data, util.AtomicString):
startIndex = 0
count = len(self.inlinePatterns)
while patternIndex < count:
data, matched, startIndex = self.__applyPattern(
self.inlinePatterns[patternIndex], data, patternIndex, startIndex
)
if not matched:
patternIndex += 1
return data
def __processElementText(self, node, subnode, isText=True):
"""
Process placeholders in `Element.text` or `Element.tail`
of Elements popped from `self.stashed_nodes`.
Keywords arguments:
* `node`: parent node
* `subnode`: processing node
* `isText`: boolean variable, True - it's text, False - it's a tail
Returns: None
"""
if isText:
text = subnode.text
subnode.text = None
else:
text = subnode.tail
subnode.tail = None
childResult = self.__processPlaceholders(text, subnode, isText)
if not isText and node is not subnode:
pos = list(node).index(subnode) + 1
else:
pos = 0
childResult.reverse()
for newChild in childResult:
node.insert(pos, newChild[0])
def __processPlaceholders(self, data, parent, isText=True):
"""
Process string with placeholders and generate `ElementTree` tree.
Keyword arguments:
* `data`: string with placeholders instead of `ElementTree` elements.
* `parent`: Element, which contains processing inline data
Returns: list with `ElementTree` elements with applied inline patterns.
"""
def linkText(text):
if text:
if result:
if result[-1][0].tail:
result[-1][0].tail += text
else:
result[-1][0].tail = text
elif not isText:
if parent.tail:
parent.tail += text
else:
parent.tail = text
else:
if parent.text:
parent.text += text
else:
parent.text = text
result = []
strartIndex = 0
while data:
index = data.find(self.__placeholder_prefix, strartIndex)
if index != -1:
id, phEndIndex = self.__findPlaceholder(data, index)
if id in self.stashed_nodes:
node = self.stashed_nodes.get(id)
if index > 0:
text = data[strartIndex:index]
linkText(text)
if not isString(node): # it's Element
for child in [node] + list(node):
if child.tail:
if child.tail.strip():
self.__processElementText(
node, child, False
)
if child.text:
if child.text.strip():
self.__processElementText(child, child)
else: # it's just a string
linkText(node)
strartIndex = phEndIndex
continue
strartIndex = phEndIndex
result.append((node, self.ancestors[:]))
else: # wrong placeholder
end = index + len(self.__placeholder_prefix)
linkText(data[strartIndex:end])
strartIndex = end
else:
text = data[strartIndex:]
if isinstance(data, util.AtomicString):
# We don't want to loose the `AtomicString`
text = util.AtomicString(text)
linkText(text)
data = ""
return result
def __applyPattern(self, pattern, data, patternIndex, startIndex=0):
"""
Check if the line fits the pattern, create the necessary
elements, add it to `stashed_nodes`.
Keyword arguments:
* `data`: the text to be processed
* `pattern`: the pattern to be checked
* `patternIndex`: index of current pattern
* `startIndex`: string index, from which we start searching
Returns: String with placeholders instead of `ElementTree` elements.
"""
new_style = isinstance(pattern, inlinepatterns.InlineProcessor)
for exclude in pattern.ANCESTOR_EXCLUDES:
if exclude.lower() in self.ancestors:
return data, False, 0
if new_style:
match = None
# Since `handleMatch` may reject our first match,
# we iterate over the buffer looking for matches
# until we can't find any more.
for match in pattern.getCompiledRegExp().finditer(data, startIndex):
node, start, end = pattern.handleMatch(match, data)
if start is None or end is None:
startIndex += match.end(0)
match = None
continue
break
else: # pragma: no cover
match = pattern.getCompiledRegExp().match(data[startIndex:])
leftData = data[:startIndex]
if not match:
return data, False, 0
if not new_style: # pragma: no cover
node = pattern.handleMatch(match)
start = match.start(0)
end = match.end(0)
if node is None:
return data, True, end
if not isString(node):
if not isinstance(node.text, util.AtomicString):
# We need to process current node too
for child in [node] + list(node):
if not isString(node):
if child.text:
self.ancestors.append(child.tag.lower())
child.text = self.__handleInline(
child.text, patternIndex + 1
)
self.ancestors.pop()
if child.tail:
child.tail = self.__handleInline(
child.tail, patternIndex
)
placeholder = self.__stashNode(node, pattern.type())
if new_style:
return "{}{}{}".format(data[:start],
placeholder, data[end:]), True, 0
else: # pragma: no cover
return "{}{}{}{}".format(leftData,
match.group(1),
placeholder, match.groups()[-1]), True, 0
def __build_ancestors(self, parent, parents):
"""Build the ancestor list."""
ancestors = []
while parent is not None:
if parent is not None:
ancestors.append(parent.tag.lower())
parent = self.parent_map.get(parent)
ancestors.reverse()
parents.extend(ancestors)
def run(self, tree, ancestors=None):
"""Apply inline patterns to a parsed Markdown tree.
Iterate over `ElementTree`, find elements with inline tag, apply inline
patterns and append newly created Elements to tree. If you don't
want to process your data with inline patterns, instead of normal
string, use subclass `AtomicString`:
node.text = markdown.AtomicString("This will not be processed.")
Arguments:
* `tree`: `ElementTree` object, representing Markdown tree.
* `ancestors`: List of parent tag names that precede the tree node (if needed).
Returns: `ElementTree` object with applied inline patterns.
"""
self.stashed_nodes = {}
# Ensure a valid parent list, but copy passed in lists
# to ensure we don't have the user accidentally change it on us.
tree_parents = [] if ancestors is None else ancestors[:]
self.parent_map = {c: p for p in tree.iter() for c in p}
stack = [(tree, tree_parents)]
while stack:
currElement, parents = stack.pop()
self.ancestors = parents
self.__build_ancestors(currElement, self.ancestors)
insertQueue = []
for child in currElement:
if child.text and not isinstance(
child.text, util.AtomicString
):
self.ancestors.append(child.tag.lower())
text = child.text
child.text = None
lst = self.__processPlaceholders(
self.__handleInline(text), child
)
for item in lst:
self.parent_map[item[0]] = child
stack += lst
insertQueue.append((child, lst))
self.ancestors.pop()
if child.tail:
tail = self.__handleInline(child.tail)
dumby = etree.Element('d')
child.tail = None
tailResult = self.__processPlaceholders(tail, dumby, False)
if dumby.tail:
child.tail = dumby.tail
pos = list(currElement).index(child) + 1
tailResult.reverse()
for newChild in tailResult:
self.parent_map[newChild[0]] = currElement
currElement.insert(pos, newChild[0])
if len(child):
self.parent_map[child] = currElement
stack.append((child, self.ancestors[:]))
for element, lst in insertQueue:
for i, obj in enumerate(lst):
newChild = obj[0]
element.insert(i, newChild)
return tree
class PrettifyTreeprocessor(Treeprocessor):
""" Add line breaks to the html document. """
def _prettifyETree(self, elem):
""" Recursively add line breaks to `ElementTree` children. """
i = "\n"
if self.md.is_block_level(elem.tag) and elem.tag not in ['code', 'pre']:
if (not elem.text or not elem.text.strip()) \
and len(elem) and self.md.is_block_level(elem[0].tag):
elem.text = i
for e in elem:
if self.md.is_block_level(e.tag):
self._prettifyETree(e)
if not elem.tail or not elem.tail.strip():
elem.tail = i
def run(self, root):
""" Add line breaks to `ElementTree` root object. """
self._prettifyETree(root)
# Do `<br />`'s separately as they are often in the middle of
# inline content and missed by `_prettifyETree`.
brs = root.iter('br')
for br in brs:
if not br.tail or not br.tail.strip():
br.tail = '\n'
else:
br.tail = '\n%s' % br.tail
# Clean up extra empty lines at end of code blocks.
pres = root.iter('pre')
for pre in pres:
if len(pre) and pre[0].tag == 'code':
code = pre[0]
# Only prettify code containing text only
if not len(code) and code.text is not None:
code.text = util.AtomicString(code.text.rstrip() + '\n')
class UnescapeTreeprocessor(Treeprocessor):
""" Restore escaped chars """
RE = re.compile(r'{}(\d+){}'.format(util.STX, util.ETX))
def _unescape(self, m):
return chr(int(m.group(1)))
def unescape(self, text):
return self.RE.sub(self._unescape, text)
def run(self, root):
""" Loop over all elements and unescape all text. """
for elem in root.iter():
# Unescape text content
if elem.text and not elem.tag == 'code':
elem.text = self.unescape(elem.text)
# Unescape tail content
if elem.tail:
elem.tail = self.unescape(elem.tail)
# Unescape attribute values
for key, value in elem.items():
elem.set(key, self.unescape(value))

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"""
Python Markdown
A Python implementation of John Gruber's Markdown.
Documentation: https://python-markdown.github.io/
GitHub: https://github.com/Python-Markdown/markdown/
PyPI: https://pypi.org/project/Markdown/
Started by Manfred Stienstra (http://www.dwerg.net/).
Maintained for a few years by Yuri Takhteyev (http://www.freewisdom.org).
Currently maintained by Waylan Limberg (https://github.com/waylan),
Dmitry Shachnev (https://github.com/mitya57) and Isaac Muse (https://github.com/facelessuser).
Copyright 2007-2018 The Python Markdown Project (v. 1.7 and later)
Copyright 2004, 2005, 2006 Yuri Takhteyev (v. 0.2-1.6b)
Copyright 2004 Manfred Stienstra (the original version)
License: BSD (see LICENSE.md for details).
"""
import re
import sys
import warnings
from collections import namedtuple
from functools import wraps, lru_cache
from itertools import count
"""
Constants you might want to modify
-----------------------------------------------------------------------------
"""
BLOCK_LEVEL_ELEMENTS = [
# Elements which are invalid to wrap in a `<p>` tag.
# See https://w3c.github.io/html/grouping-content.html#the-p-element
'address', 'article', 'aside', 'blockquote', 'details', 'div', 'dl',
'fieldset', 'figcaption', 'figure', 'footer', 'form', 'h1', 'h2', 'h3',
'h4', 'h5', 'h6', 'header', 'hgroup', 'hr', 'main', 'menu', 'nav', 'ol',
'p', 'pre', 'section', 'table', 'ul',
# Other elements which Markdown should not be mucking up the contents of.
'canvas', 'colgroup', 'dd', 'body', 'dt', 'group', 'html', 'iframe', 'li', 'legend',
'math', 'map', 'noscript', 'output', 'object', 'option', 'progress', 'script',
'style', 'summary', 'tbody', 'td', 'textarea', 'tfoot', 'th', 'thead', 'tr', 'video'
]
# Placeholders
STX = '\u0002' # Use `STX` ("Start of text") for start-of-placeholder
ETX = '\u0003' # Use `ETX` ("End of text") for end-of-placeholder
INLINE_PLACEHOLDER_PREFIX = STX+"klzzwxh:"
INLINE_PLACEHOLDER = INLINE_PLACEHOLDER_PREFIX + "%s" + ETX
INLINE_PLACEHOLDER_RE = re.compile(INLINE_PLACEHOLDER % r'([0-9]+)')
AMP_SUBSTITUTE = STX+"amp"+ETX
HTML_PLACEHOLDER = STX + "wzxhzdk:%s" + ETX
HTML_PLACEHOLDER_RE = re.compile(HTML_PLACEHOLDER % r'([0-9]+)')
TAG_PLACEHOLDER = STX + "hzzhzkh:%s" + ETX
"""
Constants you probably do not need to change
-----------------------------------------------------------------------------
"""
RTL_BIDI_RANGES = (
('\u0590', '\u07FF'),
# Hebrew (0590-05FF), Arabic (0600-06FF),
# Syriac (0700-074F), Arabic supplement (0750-077F),
# Thaana (0780-07BF), Nko (07C0-07FF).
('\u2D30', '\u2D7F') # Tifinagh
)
"""
AUXILIARY GLOBAL FUNCTIONS
=============================================================================
"""
@lru_cache(maxsize=None)
def get_installed_extensions():
if sys.version_info >= (3, 10):
from importlib import metadata
else: # `<PY310` use backport
import importlib_metadata as metadata
# Only load extension entry_points once.
return metadata.entry_points(group='markdown.extensions')
def deprecated(message, stacklevel=2):
"""
Raise a `DeprecationWarning` when wrapped function/method is called.
Usage:
@deprecated("This method will be removed in version X; use Y instead.")
def some_method()"
pass
"""
def wrapper(func):
@wraps(func)
def deprecated_func(*args, **kwargs):
warnings.warn(
f"'{func.__name__}' is deprecated. {message}",
category=DeprecationWarning,
stacklevel=stacklevel
)
return func(*args, **kwargs)
return deprecated_func
return wrapper
def parseBoolValue(value, fail_on_errors=True, preserve_none=False):
"""Parses a string representing boolean value. If parsing was successful,
returns True or False. If `preserve_none=True`, returns `True`, `False`,
or `None`. If parsing was not successful, raises `ValueError`, or, if
`fail_on_errors=False`, returns `None`."""
if not isinstance(value, str):
if preserve_none and value is None:
return value
return bool(value)
elif preserve_none and value.lower() == 'none':
return None
elif value.lower() in ('true', 'yes', 'y', 'on', '1'):
return True
elif value.lower() in ('false', 'no', 'n', 'off', '0', 'none'):
return False
elif fail_on_errors:
raise ValueError('Cannot parse bool value: %r' % value)
def code_escape(text):
"""Escape code."""
if "&" in text:
text = text.replace("&", "&amp;")
if "<" in text:
text = text.replace("<", "&lt;")
if ">" in text:
text = text.replace(">", "&gt;")
return text
def _get_stack_depth(size=2):
"""Get current stack depth, performantly.
"""
frame = sys._getframe(size)
for size in count(size):
frame = frame.f_back
if not frame:
return size
def nearing_recursion_limit():
"""Return true if current stack depth is within 100 of maximum limit."""
return sys.getrecursionlimit() - _get_stack_depth() < 100
"""
MISC AUXILIARY CLASSES
=============================================================================
"""
class AtomicString(str):
"""A string which should not be further processed."""
pass
class Processor:
def __init__(self, md=None):
self.md = md
class HtmlStash:
"""
This class is used for stashing HTML objects that we extract
in the beginning and replace with place-holders.
"""
def __init__(self):
""" Create an `HtmlStash`. """
self.html_counter = 0 # for counting inline html segments
self.rawHtmlBlocks = []
self.tag_counter = 0
self.tag_data = [] # list of dictionaries in the order tags appear
def store(self, html):
"""
Saves an HTML segment for later reinsertion. Returns a
placeholder string that needs to be inserted into the
document.
Keyword arguments:
* `html`: an html segment
Returns : a placeholder string
"""
self.rawHtmlBlocks.append(html)
placeholder = self.get_placeholder(self.html_counter)
self.html_counter += 1
return placeholder
def reset(self):
self.html_counter = 0
self.rawHtmlBlocks = []
def get_placeholder(self, key):
return HTML_PLACEHOLDER % key
def store_tag(self, tag, attrs, left_index, right_index):
"""Store tag data and return a placeholder."""
self.tag_data.append({'tag': tag, 'attrs': attrs,
'left_index': left_index,
'right_index': right_index})
placeholder = TAG_PLACEHOLDER % str(self.tag_counter)
self.tag_counter += 1 # equal to the tag's index in `self.tag_data`
return placeholder
# Used internally by `Registry` for each item in its sorted list.
# Provides an easier to read API when editing the code later.
# For example, `item.name` is more clear than `item[0]`.
_PriorityItem = namedtuple('PriorityItem', ['name', 'priority'])
class Registry:
"""
A priority sorted registry.
A `Registry` instance provides two public methods to alter the data of the
registry: `register` and `deregister`. Use `register` to add items and
`deregister` to remove items. See each method for specifics.
When registering an item, a "name" and a "priority" must be provided. All
items are automatically sorted by "priority" from highest to lowest. The
"name" is used to remove ("deregister") and get items.
A `Registry` instance it like a list (which maintains order) when reading
data. You may iterate over the items, get an item and get a count (length)
of all items. You may also check that the registry contains an item.
When getting an item you may use either the index of the item or the
string-based "name". For example:
registry = Registry()
registry.register(SomeItem(), 'itemname', 20)
# Get the item by index
item = registry[0]
# Get the item by name
item = registry['itemname']
When checking that the registry contains an item, you may use either the
string-based "name", or a reference to the actual item. For example:
someitem = SomeItem()
registry.register(someitem, 'itemname', 20)
# Contains the name
assert 'itemname' in registry
# Contains the item instance
assert someitem in registry
The method `get_index_for_name` is also available to obtain the index of
an item using that item's assigned "name".
"""
def __init__(self):
self._data = {}
self._priority = []
self._is_sorted = False
def __contains__(self, item):
if isinstance(item, str):
# Check if an item exists by this name.
return item in self._data.keys()
# Check if this instance exists.
return item in self._data.values()
def __iter__(self):
self._sort()
return iter([self._data[k] for k, p in self._priority])
def __getitem__(self, key):
self._sort()
if isinstance(key, slice):
data = Registry()
for k, p in self._priority[key]:
data.register(self._data[k], k, p)
return data
if isinstance(key, int):
return self._data[self._priority[key].name]
return self._data[key]
def __len__(self):
return len(self._priority)
def __repr__(self):
return '<{}({})>'.format(self.__class__.__name__, list(self))
def get_index_for_name(self, name):
"""
Return the index of the given name.
"""
if name in self:
self._sort()
return self._priority.index(
[x for x in self._priority if x.name == name][0]
)
raise ValueError('No item named "{}" exists.'.format(name))
def register(self, item, name, priority):
"""
Add an item to the registry with the given name and priority.
Parameters:
* `item`: The item being registered.
* `name`: A string used to reference the item.
* `priority`: An integer or float used to sort against all items.
If an item is registered with a "name" which already exists, the
existing item is replaced with the new item. Treat carefully as the
old item is lost with no way to recover it. The new item will be
sorted according to its priority and will **not** retain the position
of the old item.
"""
if name in self:
# Remove existing item of same name first
self.deregister(name)
self._is_sorted = False
self._data[name] = item
self._priority.append(_PriorityItem(name, priority))
def deregister(self, name, strict=True):
"""
Remove an item from the registry.
Set `strict=False` to fail silently.
"""
try:
index = self.get_index_for_name(name)
del self._priority[index]
del self._data[name]
except ValueError:
if strict:
raise
def _sort(self):
"""
Sort the registry by priority from highest to lowest.
This method is called internally and should never be explicitly called.
"""
if not self._is_sorted:
self._priority.sort(key=lambda item: item.priority, reverse=True)
self._is_sorted = True

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@Switch01
A_Rog
Aakanksha Agrawal
Abhinav Sagar
ABHYUDAY PRATAP SINGH
abs51295
AceGentile
Adam Chainz
Adam Tse
Adam Wentz
admin
Adrien Morison
ahayrapetyan
Ahilya
AinsworthK
Akash Srivastava
Alan Yee
Albert Tugushev
Albert-Guan
albertg
Alberto Sottile
Aleks Bunin
Alethea Flowers
Alex Gaynor
Alex Grönholm
Alex Hedges
Alex Loosley
Alex Morega
Alex Stachowiak
Alexander Shtyrov
Alexandre Conrad
Alexey Popravka
Alli
Ami Fischman
Ananya Maiti
Anatoly Techtonik
Anders Kaseorg
Andre Aguiar
Andreas Lutro
Andrei Geacar
Andrew Gaul
Andrew Shymanel
Andrey Bienkowski
Andrey Bulgakov
Andrés Delfino
Andy Freeland
Andy Kluger
Ani Hayrapetyan
Aniruddha Basak
Anish Tambe
Anrs Hu
Anthony Sottile
Antoine Musso
Anton Ovchinnikov
Anton Patrushev
Antonio Alvarado Hernandez
Antony Lee
Antti Kaihola
Anubhav Patel
Anudit Nagar
Anuj Godase
AQNOUCH Mohammed
AraHaan
Arindam Choudhury
Armin Ronacher
Artem
Arun Babu Neelicattu
Ashley Manton
Ashwin Ramaswami
atse
Atsushi Odagiri
Avinash Karhana
Avner Cohen
Awit (Ah-Wit) Ghirmai
Baptiste Mispelon
Barney Gale
barneygale
Bartek Ogryczak
Bastian Venthur
Ben Bodenmiller
Ben Darnell
Ben Hoyt
Ben Mares
Ben Rosser
Bence Nagy
Benjamin Peterson
Benjamin VanEvery
Benoit Pierre
Berker Peksag
Bernard
Bernard Tyers
Bernardo B. Marques
Bernhard M. Wiedemann
Bertil Hatt
Bhavam Vidyarthi
Blazej Michalik
Bogdan Opanchuk
BorisZZZ
Brad Erickson
Bradley Ayers
Brandon L. Reiss
Brandt Bucher
Brett Randall
Brett Rosen
Brian Cristante
Brian Rosner
briantracy
BrownTruck
Bruno Oliveira
Bruno Renié
Bruno S
Bstrdsmkr
Buck Golemon
burrows
Bussonnier Matthias
bwoodsend
c22
Caleb Martinez
Calvin Smith
Carl Meyer
Carlos Liam
Carol Willing
Carter Thayer
Cass
Chandrasekhar Atina
Chih-Hsuan Yen
Chris Brinker
Chris Hunt
Chris Jerdonek
Chris Kuehl
Chris McDonough
Chris Pawley
Chris Pryer
Chris Wolfe
Christian Clauss
Christian Heimes
Christian Oudard
Christoph Reiter
Christopher Hunt
Christopher Snyder
cjc7373
Clark Boylan
Claudio Jolowicz
Clay McClure
Cody
Cody Soyland
Colin Watson
Collin Anderson
Connor Osborn
Cooper Lees
Cooper Ry Lees
Cory Benfield
Cory Wright
Craig Kerstiens
Cristian Sorinel
Cristina
Cristina Muñoz
Curtis Doty
cytolentino
Daan De Meyer
Damian
Damian Quiroga
Damian Shaw
Dan Black
Dan Savilonis
Dan Sully
Dane Hillard
daniel
Daniel Collins
Daniel Hahler
Daniel Holth
Daniel Jost
Daniel Katz
Daniel Shaulov
Daniele Esposti
Daniele Nicolodi
Daniele Procida
Daniil Konovalenko
Danny Hermes
Danny McClanahan
Darren Kavanagh
Dav Clark
Dave Abrahams
Dave Jones
David Aguilar
David Black
David Bordeynik
David Caro
David D Lowe
David Evans
David Hewitt
David Linke
David Poggi
David Pursehouse
David Runge
David Tucker
David Wales
Davidovich
Deepak Sharma
Deepyaman Datta
Denise Yu
derwolfe
Desetude
Devesh Kumar Singh
Diego Caraballo
Diego Ramirez
DiegoCaraballo
Dimitri Merejkowsky
Dimitri Papadopoulos
Dirk Stolle
Dmitry Gladkov
Dmitry Volodin
Domen Kožar
Dominic Davis-Foster
Donald Stufft
Dongweiming
doron zarhi
Dos Moonen
Douglas Thor
DrFeathers
Dustin Ingram
Dwayne Bailey
Ed Morley
Edgar Ramírez
Ee Durbin
Eitan Adler
ekristina
elainechan
Eli Schwartz
Elisha Hollander
Ellen Marie Dash
Emil Burzo
Emil Styrke
Emmanuel Arias
Endoh Takanao
enoch
Erdinc Mutlu
Eric Cousineau
Eric Gillingham
Eric Hanchrow
Eric Hopper
Erik M. Bray
Erik Rose
Erwin Janssen
Eugene Vereshchagin
everdimension
Federico
Felipe Peter
Felix Yan
fiber-space
Filip Kokosiński
Filipe Laíns
Finn Womack
finnagin
Florian Briand
Florian Rathgeber
Francesco
Francesco Montesano
Frost Ming
Gabriel Curio
Gabriel de Perthuis
Garry Polley
gavin
gdanielson
Geoffrey Sneddon
George Song
Georgi Valkov
Georgy Pchelkin
ghost
Giftlin Rajaiah
gizmoguy1
gkdoc
Godefroid Chapelle
Gopinath M
GOTO Hayato
gousaiyang
gpiks
Greg Roodt
Greg Ward
Guilherme Espada
Guillaume Seguin
gutsytechster
Guy Rozendorn
Guy Tuval
gzpan123
Hanjun Kim
Hari Charan
Harsh Vardhan
harupy
Harutaka Kawamura
hauntsaninja
Henrich Hartzer
Henry Schreiner
Herbert Pfennig
Holly Stotelmyer
Honnix
Hsiaoming Yang
Hugo Lopes Tavares
Hugo van Kemenade
Hugues Bruant
Hynek Schlawack
Ian Bicking
Ian Cordasco
Ian Lee
Ian Stapleton Cordasco
Ian Wienand
Igor Kuzmitshov
Igor Sobreira
Ilan Schnell
Illia Volochii
Ilya Baryshev
Inada Naoki
Ionel Cristian Mărieș
Ionel Maries Cristian
Ivan Pozdeev
Jacob Kim
Jacob Walls
Jaime Sanz
jakirkham
Jakub Kuczys
Jakub Stasiak
Jakub Vysoky
Jakub Wilk
James Cleveland
James Curtin
James Firth
James Gerity
James Polley
Jan Pokorný
Jannis Leidel
Jarek Potiuk
jarondl
Jason Curtis
Jason R. Coombs
JasonMo
JasonMo1
Jay Graves
Jean-Christophe Fillion-Robin
Jeff Barber
Jeff Dairiki
Jelmer Vernooij
jenix21
Jeremy Stanley
Jeremy Zafran
Jesse Rittner
Jiashuo Li
Jim Fisher
Jim Garrison
Jiun Bae
Jivan Amara
Joe Bylund
Joe Michelini
John Paton
John T. Wodder II
John-Scott Atlakson
johnthagen
Jon Banafato
Jon Dufresne
Jon Parise
Jonas Nockert
Jonathan Herbert
Joonatan Partanen
Joost Molenaar
Jorge Niedbalski
Joseph Bylund
Joseph Long
Josh Bronson
Josh Hansen
Josh Schneier
Juan Luis Cano Rodríguez
Juanjo Bazán
Judah Rand
Julian Berman
Julian Gethmann
Julien Demoor
Jussi Kukkonen
jwg4
Jyrki Pulliainen
Kai Chen
Kai Mueller
Kamal Bin Mustafa
kasium
kaustav haldar
keanemind
Keith Maxwell
Kelsey Hightower
Kenneth Belitzky
Kenneth Reitz
Kevin Burke
Kevin Carter
Kevin Frommelt
Kevin R Patterson
Kexuan Sun
Kit Randel
Klaas van Schelven
KOLANICH
kpinc
Krishna Oza
Kumar McMillan
Kyle Persohn
lakshmanaram
Laszlo Kiss-Kollar
Laurent Bristiel
Laurent LAPORTE
Laurie O
Laurie Opperman
layday
Leon Sasson
Lev Givon
Lincoln de Sousa
Lipis
lorddavidiii
Loren Carvalho
Lucas Cimon
Ludovic Gasc
Lukas Juhrich
Luke Macken
Luo Jiebin
luojiebin
luz.paz
László Kiss Kollár
M00nL1ght
Marc Abramowitz
Marc Tamlyn
Marcus Smith
Mariatta
Mark Kohler
Mark Williams
Markus Hametner
Martey Dodoo
Martin Fischer
Martin Häcker
Martin Pavlasek
Masaki
Masklinn
Matej Stuchlik
Mathew Jennings
Mathieu Bridon
Mathieu Kniewallner
Matt Bacchi
Matt Good
Matt Maker
Matt Robenolt
matthew
Matthew Einhorn
Matthew Feickert
Matthew Gilliard
Matthew Iversen
Matthew Treinish
Matthew Trumbell
Matthew Willson
Matthias Bussonnier
mattip
Maurits van Rees
Max W Chase
Maxim Kurnikov
Maxime Rouyrre
mayeut
mbaluna
mdebi
memoselyk
meowmeowcat
Michael
Michael Aquilina
Michael E. Karpeles
Michael Klich
Michael Mintz
Michael Williamson
michaelpacer
Michał Górny
Mickaël Schoentgen
Miguel Araujo Perez
Mihir Singh
Mike
Mike Hendricks
Min RK
MinRK
Miro Hrončok
Monica Baluna
montefra
Monty Taylor
Muha Ajjan‮
Nadav Wexler
Nahuel Ambrosini
Nate Coraor
Nate Prewitt
Nathan Houghton
Nathaniel J. Smith
Nehal J Wani
Neil Botelho
Nguyễn Gia Phong
Nicholas Serra
Nick Coghlan
Nick Stenning
Nick Timkovich
Nicolas Bock
Nicole Harris
Nikhil Benesch
Nikhil Ladha
Nikita Chepanov
Nikolay Korolev
Nipunn Koorapati
Nitesh Sharma
Niyas Sait
Noah
Noah Gorny
Nowell Strite
NtaleGrey
nvdv
OBITORASU
Ofek Lev
ofrinevo
Oliver Freund
Oliver Jeeves
Oliver Mannion
Oliver Tonnhofer
Olivier Girardot
Olivier Grisel
Ollie Rutherfurd
OMOTO Kenji
Omry Yadan
onlinejudge95
Oren Held
Oscar Benjamin
Oz N Tiram
Pachwenko
Patrick Dubroy
Patrick Jenkins
Patrick Lawson
patricktokeeffe
Patrik Kopkan
Paul Kehrer
Paul Moore
Paul Nasrat
Paul Oswald
Paul van der Linden
Paulus Schoutsen
Pavel Safronov
Pavithra Eswaramoorthy
Pawel Jasinski
Paweł Szramowski
Pekka Klärck
Peter Gessler
Peter Lisák
Peter Waller
petr-tik
Phaneendra Chiruvella
Phil Elson
Phil Freo
Phil Pennock
Phil Whelan
Philip Jägenstedt
Philip Molloy
Philippe Ombredanne
Pi Delport
Pierre-Yves Rofes
Pieter Degroote
pip
Prabakaran Kumaresshan
Prabhjyotsing Surjit Singh Sodhi
Prabhu Marappan
Pradyun Gedam
Prashant Sharma
Pratik Mallya
pre-commit-ci[bot]
Preet Thakkar
Preston Holmes
Przemek Wrzos
Pulkit Goyal
q0w
Qiangning Hong
Quentin Lee
Quentin Pradet
R. David Murray
Rafael Caricio
Ralf Schmitt
Razzi Abuissa
rdb
Reece Dunham
Remi Rampin
Rene Dudfield
Riccardo Magliocchetti
Riccardo Schirone
Richard Jones
Richard Si
Ricky Ng-Adam
Rishi
RobberPhex
Robert Collins
Robert McGibbon
Robert Pollak
Robert T. McGibbon
robin elisha robinson
Roey Berman
Rohan Jain
Roman Bogorodskiy
Roman Donchenko
Romuald Brunet
ronaudinho
Ronny Pfannschmidt
Rory McCann
Ross Brattain
Roy Wellington Ⅳ
Ruairidh MacLeod
Russell Keith-Magee
Ryan Shepherd
Ryan Wooden
ryneeverett
Sachi King
Salvatore Rinchiera
sandeepkiran-js
Savio Jomton
schlamar
Scott Kitterman
Sean
seanj
Sebastian Jordan
Sebastian Schaetz
Segev Finer
SeongSoo Cho
Sergey Vasilyev
Seth Michael Larson
Seth Woodworth
Shantanu
shireenrao
Shivansh-007
Shlomi Fish
Shovan Maity
Simeon Visser
Simon Cross
Simon Pichugin
sinoroc
sinscary
snook92
socketubs
Sorin Sbarnea
Srinivas Nyayapati
Stavros Korokithakis
Stefan Scherfke
Stefano Rivera
Stephan Erb
Stephen Rosen
stepshal
Steve (Gadget) Barnes
Steve Barnes
Steve Dower
Steve Kowalik
Steven Myint
Steven Silvester
stonebig
Stéphane Bidoul
Stéphane Bidoul (ACSONE)
Stéphane Klein
Sumana Harihareswara
Surbhi Sharma
Sviatoslav Sydorenko
Swat009
Sylvain
Takayuki SHIMIZUKAWA
Taneli Hukkinen
tbeswick
Thiago
Thijs Triemstra
Thomas Fenzl
Thomas Grainger
Thomas Guettler
Thomas Johansson
Thomas Kluyver
Thomas Smith
Thomas VINCENT
Tim D. Smith
Tim Gates
Tim Harder
Tim Heap
tim smith
tinruufu
Tobias Hermann
Tom Forbes
Tom Freudenheim
Tom V
Tomas Hrnciar
Tomas Orsava
Tomer Chachamu
Tommi Enenkel | AnB
Tomáš Hrnčiar
Tony Beswick
Tony Narlock
Tony Zhaocheng Tan
TonyBeswick
toonarmycaptain
Toshio Kuratomi
toxinu
Travis Swicegood
Tushar Sadhwani
Tzu-ping Chung
Valentin Haenel
Victor Stinner
victorvpaulo
Vikram - Google
Viktor Szépe
Ville Skyttä
Vinay Sajip
Vincent Philippon
Vinicyus Macedo
Vipul Kumar
Vitaly Babiy
Vladimir Rutsky
W. Trevor King
Wil Tan
Wilfred Hughes
William Edwards
William ML Leslie
William T Olson
William Woodruff
Wilson Mo
wim glenn
Winson Luk
Wolfgang Maier
Wu Zhenyu
XAMES3
Xavier Fernandez
xoviat
xtreak
YAMAMOTO Takashi
Yen Chi Hsuan
Yeray Diaz Diaz
Yoval P
Yu Jian
Yuan Jing Vincent Yan
Yusuke Hayashi
Zearin
Zhiping Deng
ziebam
Zvezdan Petkovic
Łukasz Langa
Роман Донченко
Семён Марьясин
‮rekcäH nitraM‮

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pip

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Copyright (c) 2008-present The pip developers (see AUTHORS.txt file)
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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Metadata-Version: 2.1
Name: pip
Version: 23.2.1
Summary: The PyPA recommended tool for installing Python packages.
Home-page: https://pip.pypa.io/
Author: The pip developers
Author-email: distutils-sig@python.org
License: MIT
Project-URL: Documentation, https://pip.pypa.io
Project-URL: Source, https://github.com/pypa/pip
Project-URL: Changelog, https://pip.pypa.io/en/stable/news/
Classifier: Development Status :: 5 - Production/Stable
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: MIT License
Classifier: Topic :: Software Development :: Build Tools
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3 :: Only
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: 3.8
Classifier: Programming Language :: Python :: 3.9
Classifier: Programming Language :: Python :: 3.10
Classifier: Programming Language :: Python :: 3.11
Classifier: Programming Language :: Python :: 3.12
Classifier: Programming Language :: Python :: Implementation :: CPython
Classifier: Programming Language :: Python :: Implementation :: PyPy
Requires-Python: >=3.7
License-File: LICENSE.txt
License-File: AUTHORS.txt
pip - The Python Package Installer
==================================
.. image:: https://img.shields.io/pypi/v/pip.svg
:target: https://pypi.org/project/pip/
.. image:: https://readthedocs.org/projects/pip/badge/?version=latest
:target: https://pip.pypa.io/en/latest
pip is the `package installer`_ for Python. You can use pip to install packages from the `Python Package Index`_ and other indexes.
Please take a look at our documentation for how to install and use pip:
* `Installation`_
* `Usage`_
We release updates regularly, with a new version every 3 months. Find more details in our documentation:
* `Release notes`_
* `Release process`_
In pip 20.3, we've `made a big improvement to the heart of pip`_; `learn more`_. We want your input, so `sign up for our user experience research studies`_ to help us do it right.
**Note**: pip 21.0, in January 2021, removed Python 2 support, per pip's `Python 2 support policy`_. Please migrate to Python 3.
If you find bugs, need help, or want to talk to the developers, please use our mailing lists or chat rooms:
* `Issue tracking`_
* `Discourse channel`_
* `User IRC`_
If you want to get involved head over to GitHub to get the source code, look at our development documentation and feel free to jump on the developer mailing lists and chat rooms:
* `GitHub page`_
* `Development documentation`_
* `Development IRC`_
Code of Conduct
---------------
Everyone interacting in the pip project's codebases, issue trackers, chat
rooms, and mailing lists is expected to follow the `PSF Code of Conduct`_.
.. _package installer: https://packaging.python.org/guides/tool-recommendations/
.. _Python Package Index: https://pypi.org
.. _Installation: https://pip.pypa.io/en/stable/installation/
.. _Usage: https://pip.pypa.io/en/stable/
.. _Release notes: https://pip.pypa.io/en/stable/news.html
.. _Release process: https://pip.pypa.io/en/latest/development/release-process/
.. _GitHub page: https://github.com/pypa/pip
.. _Development documentation: https://pip.pypa.io/en/latest/development
.. _made a big improvement to the heart of pip: https://pyfound.blogspot.com/2020/11/pip-20-3-new-resolver.html
.. _learn more: https://pip.pypa.io/en/latest/user_guide/#changes-to-the-pip-dependency-resolver-in-20-3-2020
.. _sign up for our user experience research studies: https://pyfound.blogspot.com/2020/03/new-pip-resolver-to-roll-out-this-year.html
.. _Python 2 support policy: https://pip.pypa.io/en/latest/development/release-process/#python-2-support
.. _Issue tracking: https://github.com/pypa/pip/issues
.. _Discourse channel: https://discuss.python.org/c/packaging
.. _User IRC: https://kiwiirc.com/nextclient/#ircs://irc.libera.chat:+6697/pypa
.. _Development IRC: https://kiwiirc.com/nextclient/#ircs://irc.libera.chat:+6697/pypa-dev
.. _PSF Code of Conduct: https://github.com/pypa/.github/blob/main/CODE_OF_CONDUCT.md

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