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import markdown
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from markdown.inlinepatterns import Pattern, SubstituteTagPattern
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from markdown.util import etree
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import boards
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__author__ = 'neko259'
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AUTOLINK_PATTERN = r'(https?://\S+)'
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QUOTE_PATTERN = r'^(?<!>)(>[^>].*)$'
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REFLINK_PATTERN = r'((>>)(\d+))'
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SPOILER_PATTERN = r'%%([^(%%)]+)%%'
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COMMENT_PATTERN = r'^(//(.+))'
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STRIKETHROUGH_PATTERN = r'~(.+)~'
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class TextFormatter():
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"""
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An interface for formatter that can be used in the text format panel
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"""
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name = ''
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# Left and right tags for the button preview
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preview_left = ''
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preview_right = ''
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# Left and right characters for the textarea input
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format_left = ''
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format_right = ''
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class AutolinkPattern(Pattern):
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def handleMatch(self, m):
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link_element = etree.Element('a')
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href = m.group(2)
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link_element.set('href', href)
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link_element.text = href
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return link_element
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class QuotePattern(Pattern, TextFormatter):
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name = ''
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preview_left = '<span class="quote">> '
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preview_right = '</span>'
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format_left = '>'
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def handleMatch(self, m):
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quote_element = etree.Element('span')
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quote_element.set('class', 'quote')
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quote_element.text = m.group(2)
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return quote_element
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class ReflinkPattern(Pattern):
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def handleMatch(self, m):
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post_id = m.group(4)
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posts = boards.models.Post.objects.filter(id=post_id)
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if posts.count() > 0:
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ref_element = etree.Element('a')
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post = posts[0]
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ref_element.set('href', post.get_url())
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ref_element.text = m.group(2)
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return ref_element
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class SpoilerPattern(Pattern, TextFormatter):
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name = 's'
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preview_left = '<span class="spoiler">'
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preview_right = '</span>'
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format_left = '%%'
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format_right = '%%'
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def handleMatch(self, m):
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quote_element = etree.Element('span')
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quote_element.set('class', 'spoiler')
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quote_element.text = m.group(2)
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return quote_element
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class CommentPattern(Pattern, TextFormatter):
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name = ''
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preview_left = '<span class="comment">// '
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preview_right = '</span>'
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format_left = '//'
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def handleMatch(self, m):
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quote_element = etree.Element('span')
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quote_element.set('class', 'comment')
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quote_element.text = '//' + m.group(3)
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return quote_element
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class StrikeThroughPattern(Pattern, TextFormatter):
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name = 's'
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preview_left = '<span class="strikethrough">'
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preview_right = '</span>'
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format_left = '~'
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format_right = '~'
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def handleMatch(self, m):
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quote_element = etree.Element('span')
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quote_element.set('class', 'strikethrough')
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quote_element.text = m.group(2)
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return quote_element
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class ItalicPattern(TextFormatter):
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name = 'i'
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preview_left = '<i>'
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preview_right = '</i>'
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format_left = '_'
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format_right = '_'
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class BoldPattern(TextFormatter):
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name = 'b'
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preview_left = '<b>'
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preview_right = '</b>'
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format_left = '__'
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format_right = '__'
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class CodePattern(TextFormatter):
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name = 'code'
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preview_left = '<code>'
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preview_right = '</code>'
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format_left = ' '
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class NeboardMarkdown(markdown.Extension):
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def extendMarkdown(self, md, md_globals):
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self._add_neboard_patterns(md)
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self._delete_patterns(md)
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def _delete_patterns(self, md):
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del md.parser.blockprocessors['quote']
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del md.inlinePatterns['image_link']
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del md.inlinePatterns['image_reference']
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def _add_neboard_patterns(self, md):
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autolink = AutolinkPattern(AUTOLINK_PATTERN, md)
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quote = QuotePattern(QUOTE_PATTERN, md)
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reflink = ReflinkPattern(REFLINK_PATTERN, md)
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spoiler = SpoilerPattern(SPOILER_PATTERN, md)
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comment = CommentPattern(COMMENT_PATTERN, md)
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strikethrough = StrikeThroughPattern(STRIKETHROUGH_PATTERN, md)
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md.inlinePatterns[u'autolink_ext'] = autolink
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md.inlinePatterns[u'spoiler'] = spoiler
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md.inlinePatterns[u'strikethrough'] = strikethrough
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md.inlinePatterns[u'comment'] = comment
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md.inlinePatterns[u'reflink'] = reflink
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md.inlinePatterns[u'quote'] = quote
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def make_extension(configs=None):
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return NeboardMarkdown(configs=configs)
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neboard_extension = make_extension()
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def markdown_extended(markup):
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return markdown.markdown(markup, [neboard_extension, 'nl2br'],
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safe_mode='escape')
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formatters = [
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QuotePattern,
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SpoilerPattern,
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ItalicPattern,
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BoldPattern,
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CommentPattern,
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StrikeThroughPattern,
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CodePattern,
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]
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