137 lines
4.1 KiB
Python
137 lines
4.1 KiB
Python
# -*- coding: utf-8 -*-
|
|
from __future__ import unicode_literals
|
|
import re
|
|
import sys
|
|
|
|
|
|
"""
|
|
Python 3 Stuff
|
|
=============================================================================
|
|
"""
|
|
PY3 = sys.version_info[0] == 3
|
|
|
|
if PY3:
|
|
string_type = str
|
|
text_type = str
|
|
int2str = chr
|
|
else:
|
|
string_type = basestring
|
|
text_type = unicode
|
|
int2str = unichr
|
|
|
|
|
|
"""
|
|
Constants you might want to modify
|
|
-----------------------------------------------------------------------------
|
|
"""
|
|
|
|
BLOCK_LEVEL_ELEMENTS = re.compile("^(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul"
|
|
"|script|noscript|form|fieldset|iframe|math"
|
|
"|hr|hr/|style|li|dt|dd|thead|tbody"
|
|
"|tr|th|td|section|footer|header|group|figure"
|
|
"|figcaption|aside|article|canvas|output"
|
|
"|progress|video)$", re.IGNORECASE)
|
|
# 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]{4})')
|
|
AMP_SUBSTITUTE = STX+"amp"+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
|
|
)
|
|
|
|
# Extensions should use "markdown.util.etree" instead of "etree" (or do `from
|
|
# markdown.util import etree`). Do not import it by yourself.
|
|
|
|
try: # Is the C implemenation of ElementTree available?
|
|
import xml.etree.cElementTree as etree
|
|
from xml.etree.ElementTree import Comment
|
|
# Serializers (including ours) test with non-c Comment
|
|
etree.test_comment = Comment
|
|
if etree.VERSION < "1.0.5":
|
|
raise RuntimeError("cElementTree version 1.0.5 or higher is required.")
|
|
except (ImportError, RuntimeError):
|
|
# Use the Python implementation of ElementTree?
|
|
import xml.etree.ElementTree as etree
|
|
if etree.VERSION < "1.1":
|
|
raise RuntimeError("ElementTree version 1.1 or higher is required")
|
|
|
|
|
|
"""
|
|
AUXILIARY GLOBAL FUNCTIONS
|
|
=============================================================================
|
|
"""
|
|
|
|
|
|
def isBlockLevel(tag):
|
|
"""Check if the tag is a block level HTML tag."""
|
|
if isinstance(tag, string_type):
|
|
return BLOCK_LEVEL_ELEMENTS.match(tag)
|
|
# Some ElementTree tags are not strings, so return False.
|
|
return False
|
|
|
|
"""
|
|
MISC AUXILIARY CLASSES
|
|
=============================================================================
|
|
"""
|
|
|
|
class AtomicString(text_type):
|
|
"""A string which should not be further processed."""
|
|
pass
|
|
|
|
|
|
class Processor(object):
|
|
def __init__(self, markdown_instance=None):
|
|
if markdown_instance:
|
|
self.markdown = markdown_instance
|
|
|
|
|
|
class HtmlStash(object):
|
|
"""
|
|
This class is used for stashing HTML objects that we extract
|
|
in the beginning and replace with place-holders.
|
|
"""
|
|
|
|
def __init__ (self):
|
|
""" Create a HtmlStash. """
|
|
self.html_counter = 0 # for counting inline html segments
|
|
self.rawHtmlBlocks=[]
|
|
|
|
def store(self, html, safe=False):
|
|
"""
|
|
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
|
|
* safe: label an html segment as safe for safemode
|
|
|
|
Returns : a placeholder string
|
|
|
|
"""
|
|
self.rawHtmlBlocks.append((html, safe))
|
|
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 "%swzxhzdk:%d%s" % (STX, key, ETX)
|
|
|