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| 1 # -*- coding: utf-8 -*- | |
| 2 from __future__ import unicode_literals | |
| 3 import re | |
| 4 import sys | |
| 5 | |
| 6 | |
| 7 """ | |
| 8 Python 3 Stuff | |
| 9 ============================================================================= | |
| 10 """ | |
| 11 PY3 = sys.version_info[0] == 3 | |
| 12 | |
| 13 if PY3: | |
| 14 string_type = str | |
| 15 text_type = str | |
| 16 int2str = chr | |
| 17 else: | |
| 18 string_type = basestring | |
| 19 text_type = unicode | |
| 20 int2str = unichr | |
| 21 | |
| 22 | |
| 23 """ | |
| 24 Constants you might want to modify | |
| 25 ----------------------------------------------------------------------------- | |
| 26 """ | |
| 27 | |
| 28 BLOCK_LEVEL_ELEMENTS = re.compile("^(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul" | |
| 29 "|script|noscript|form|fieldset|iframe|math" | |
| 30 "|hr|hr/|style|li|dt|dd|thead|tbody" | |
| 31 "|tr|th|td|section|footer|header|group|figure" | |
| 32 "|figcaption|aside|article|canvas|output" | |
| 33 "|progress|video)$", re.IGNORECASE) | |
| 34 # Placeholders | |
| 35 STX = '\u0002' # Use STX ("Start of text") for start-of-placeholder | |
| 36 ETX = '\u0003' # Use ETX ("End of text") for end-of-placeholder | |
| 37 INLINE_PLACEHOLDER_PREFIX = STX+"klzzwxh:" | |
| 38 INLINE_PLACEHOLDER = INLINE_PLACEHOLDER_PREFIX + "%s" + ETX | |
| 39 INLINE_PLACEHOLDER_RE = re.compile(INLINE_PLACEHOLDER % r'([0-9]{4})') | |
| 40 AMP_SUBSTITUTE = STX+"amp"+ETX | |
| 41 | |
| 42 """ | |
| 43 Constants you probably do not need to change | |
| 44 ----------------------------------------------------------------------------- | |
| 45 """ | |
| 46 | |
| 47 RTL_BIDI_RANGES = ( ('\u0590', '\u07FF'), | |
| 48 # Hebrew (0590-05FF), Arabic (0600-06FF), | |
| 49 # Syriac (0700-074F), Arabic supplement (0750-077F), | |
| 50 # Thaana (0780-07BF), Nko (07C0-07FF). | |
| 51 ('\u2D30', '\u2D7F'), # Tifinagh | |
| 52 ) | |
| 53 | |
| 54 # Extensions should use "markdown.util.etree" instead of "etree" (or do `from | |
| 55 # markdown.util import etree`). Do not import it by yourself. | |
| 56 | |
| 57 try: # Is the C implemenation of ElementTree available? | |
| 58 import xml.etree.cElementTree as etree | |
| 59 from xml.etree.ElementTree import Comment | |
| 60 # Serializers (including ours) test with non-c Comment | |
| 61 etree.test_comment = Comment | |
| 62 if etree.VERSION < "1.0.5": | |
| 63 raise RuntimeError("cElementTree version 1.0.5 or higher is required.") | |
| 64 except (ImportError, RuntimeError): | |
| 65 # Use the Python implementation of ElementTree? | |
| 66 import xml.etree.ElementTree as etree | |
| 67 if etree.VERSION < "1.1": | |
| 68 raise RuntimeError("ElementTree version 1.1 or higher is required") | |
| 69 | |
| 70 | |
| 71 """ | |
| 72 AUXILIARY GLOBAL FUNCTIONS | |
| 73 ============================================================================= | |
| 74 """ | |
| 75 | |
| 76 | |
| 77 def isBlockLevel(tag): | |
| 78 """Check if the tag is a block level HTML tag.""" | |
| 79 if isinstance(tag, string_type): | |
| 80 return BLOCK_LEVEL_ELEMENTS.match(tag) | |
| 81 # Some ElementTree tags are not strings, so return False. | |
| 82 return False | |
| 83 | |
| 84 """ | |
| 85 MISC AUXILIARY CLASSES | |
| 86 ============================================================================= | |
| 87 """ | |
| 88 | |
| 89 class AtomicString(text_type): | |
| 90 """A string which should not be further processed.""" | |
| 91 pass | |
| 92 | |
| 93 | |
| 94 class Processor(object): | |
| 95 def __init__(self, markdown_instance=None): | |
| 96 if markdown_instance: | |
| 97 self.markdown = markdown_instance | |
| 98 | |
| 99 | |
| 100 class HtmlStash(object): | |
| 101 """ | |
| 102 This class is used for stashing HTML objects that we extract | |
| 103 in the beginning and replace with place-holders. | |
| 104 """ | |
| 105 | |
| 106 def __init__ (self): | |
| 107 """ Create a HtmlStash. """ | |
| 108 self.html_counter = 0 # for counting inline html segments | |
| 109 self.rawHtmlBlocks=[] | |
| 110 | |
| 111 def store(self, html, safe=False): | |
| 112 """ | |
| 113 Saves an HTML segment for later reinsertion. Returns a | |
| 114 placeholder string that needs to be inserted into the | |
| 115 document. | |
| 116 | |
| 117 Keyword arguments: | |
| 118 | |
| 119 * html: an html segment | |
| 120 * safe: label an html segment as safe for safemode | |
| 121 | |
| 122 Returns : a placeholder string | |
| 123 | |
| 124 """ | |
| 125 self.rawHtmlBlocks.append((html, safe)) | |
| 126 placeholder = self.get_placeholder(self.html_counter) | |
| 127 self.html_counter += 1 | |
| 128 return placeholder | |
| 129 | |
| 130 def reset(self): | |
| 131 self.html_counter = 0 | |
| 132 self.rawHtmlBlocks = [] | |
| 133 | |
| 134 def get_placeholder(self, key): | |
| 135 return "%swzxhzdk:%d%s" % (STX, key, ETX) | |
| 136 | |
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Chromium Code Reviews
Issue 132753002:
Revert 243980 "Docserver: Support markdown for HTML content." (Closed)
Base URL: svn://svn.chromium.org/chrome/