Sith/core/markdown.py
2017-06-13 10:04:13 +02:00

233 lines
6.3 KiB
Python

# -*- coding:utf-8 -*
#
# Copyright 2016,2017
# - Skia <skia@libskia.so>
#
# Ce fichier fait partie du site de l'Association des Étudiants de l'UTBM,
# http://ae.utbm.fr.
#
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License a published by the Free Software
# Foundation; either version 3 of the License, or (at your option) any later
# version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Sofware Foundation, Inc., 59 Temple
# Place - Suite 330, Boston, MA 02111-1307, USA.
#
#
import re
from mistune import Renderer, InlineGrammar, InlineLexer, Markdown, escape, escape_link
from django.core.urlresolvers import reverse
class SithRenderer(Renderer):
def file_link(self, id, suffix):
return reverse('core:file_detail', kwargs={'file_id': id}) + suffix
def exposant(self, text):
return """<sup>%s</sup>""" % text
def indice(self, text):
return """<sub>%s</sub>""" % text
def underline(self, text):
return """<u>%s</u>""" % text
def image(self, original_src, title, text):
"""Rendering a image with title and text.
:param src: source link of the image.
:param title: title text of the image.
:param text: alt text of the image.
"""
style = None
if '?' in original_src:
src, params = original_src.rsplit('?', maxsplit=1)
m = re.search(r'(\d+%?)(x(\d+%?))?', params)
if not m:
src = original_src
else:
width = m.group(1)
if not width.endswith('%'):
width += "px"
style = "width: %s; " % width
try:
height = m.group(3)
if not height.endswith('%'):
height += "px"
style += "height: %s; " % height
except:
pass
else:
params = None
src = original_src
src = escape_link(src)
text = escape(text, quote=True)
if title:
title = escape(title, quote=True)
html = '<img src="%s" alt="%s" title="%s"' % (src, text, title)
else:
html = '<img src="%s" alt="%s"' % (src, text)
if style:
html = '%s style="%s"' % (html, style)
if self.options.get('use_xhtml'):
return '%s />' % html
return '%s>' % html
class SithInlineGrammar(InlineGrammar):
double_emphasis = re.compile(
r'^\*{2}([\s\S]+?)\*{2}(?!\*)' # **word**
)
emphasis = re.compile(
r'^\*((?:\*\*|[^\*])+?)\*(?!\*)' # *word*
)
underline = re.compile(
r'^_{2}([\s\S]+?)_{2}(?!_)' # __word__
)
exposant = re.compile(
r'^<sup>([\s\S]+?)</sup>' # <sup>text</sup>
)
indice = re.compile(
r'^<sub>([\s\S]+?)</sub>' # <sub>text</sub>
)
class SithInlineLexer(InlineLexer):
grammar_class = SithInlineGrammar
default_rules = [
'escape',
# 'inline_html',
'autolink',
'url',
'footnote',
'link',
'reflink',
'nolink',
'exposant',
'double_emphasis',
'emphasis',
'underline',
'indice',
'code',
'linebreak',
'strikethrough',
'text',
]
inline_html_rules = [
'escape',
'autolink',
'url',
'link',
'reflink',
'nolink',
'exposant',
'double_emphasis',
'emphasis',
'underline',
'indice',
'code',
'linebreak',
'strikethrough',
'text',
]
def output_underline(self, m):
text = m.group(1)
return self.renderer.underline(text)
def output_exposant(self, m):
text = m.group(1)
return self.renderer.exposant(text)
def output_indice(self, m):
text = m.group(1)
return self.renderer.indice(text)
# Double emphasis rule changed
def output_double_emphasis(self, m):
text = m.group(1)
text = self.output(text)
return self.renderer.double_emphasis(text)
# Emphasis rule changed
def output_emphasis(self, m):
text = m.group(1)
text = self.output(text)
return self.renderer.emphasis(text)
def _process_link(self, m, link, title=None):
try: # Add page:// support for links
page = re.compile(
r'^page://(\S*)' # page://nom_de_ma_page
)
match = page.search(link)
page = match.group(1) or ""
link = reverse('core:page', kwargs={'page_name': page})
except:
pass
try: # Add file:// support for links
file_link = re.compile(
r'^file://(\d*)/?(\S*)?' # file://4000/download
)
match = file_link.search(link)
id = match.group(1)
suffix = match.group(2) or ""
link = reverse('core:file_detail', kwargs={'file_id': id}) + suffix
except:
pass
return super(SithInlineLexer, self)._process_link(m, link, title)
renderer = SithRenderer(escape=True)
inline = SithInlineLexer(renderer)
markdown = Markdown(renderer, inline=inline)
if __name__ == "__main__":
print(markdown.inline.default_rules)
print(markdown.inline.inline_html_rules)
text = """
## Basique
* Mettre le texte en **gras** : `**texte**`
* Mettre le texte en *italique* : `*texte*`
* __Souligner__ le texte : `__texte__`
* ~~Barrer du texte~~ : `~~texte~~`
* Mettre ^du texte^ en ^exposant^ : `^mot` ou `^texte^`
* _Mettre du texte_ en _indice_ : `_mot` ou `_texte_`
* Pied de page [^en pied de page]
## Blocs de citations
Un bloc de citation se crée ainsi :
```
> Ceci est
> un bloc de
> citation
```
> Ceci est
> un bloc de
> citation
Il est possible d'intégrer de la syntaxe Markdown-AE dans un tel bloc.
Petit *test* _sur_ ^une^ **seule** ^ligne pour voir^
"""
print(markdown(text))