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# -*- coding: utf-8 -*-
# markdown is released under the BSD 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 <organization> 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.
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)
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