diff options
Diffstat (limited to 'markdown/treeprocessors.py')
| -rw-r--r-- | markdown/treeprocessors.py | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/markdown/treeprocessors.py b/markdown/treeprocessors.py index e02a505..e9f48ca 100644 --- a/markdown/treeprocessors.py +++ b/markdown/treeprocessors.py @@ -19,6 +19,7 @@ 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 @@ -29,6 +30,7 @@ def build_treeprocessors(md, **kwargs): treeprocessors = util.Registry() treeprocessors.register(InlineProcessor(md), 'inline', 20) treeprocessors.register(PrettifyTreeprocessor(md), 'prettify', 10) + treeprocessors.register(UnescapeTreeprocessor(md), 'unescape', 0) return treeprocessors @@ -429,3 +431,28 @@ class PrettifyTreeprocessor(Treeprocessor): # 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)) |