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Diffstat (limited to 'tools/addon-sdk-1.5/python-lib/markdown/inlinepatterns.py')
| -rw-r--r-- | tools/addon-sdk-1.5/python-lib/markdown/inlinepatterns.py | 371 |
1 files changed, 0 insertions, 371 deletions
diff --git a/tools/addon-sdk-1.5/python-lib/markdown/inlinepatterns.py b/tools/addon-sdk-1.5/python-lib/markdown/inlinepatterns.py deleted file mode 100644 index 89fa3b2..0000000 --- a/tools/addon-sdk-1.5/python-lib/markdown/inlinepatterns.py +++ /dev/null @@ -1,371 +0,0 @@ -""" -INLINE PATTERNS -============================================================================= - -Inline patterns such as *emphasis* are handled by means of auxiliary -objects, one per pattern. Pattern objects must be instances of classes -that extend markdown.Pattern. Each pattern object uses a single regular -expression and needs support the following methods: - - pattern.getCompiledRegExp() # returns a regular expression - - pattern.handleMatch(m) # takes a match object and returns - # an ElementTree element or just plain text - -All of python markdown's built-in patterns subclass from Pattern, -but you can add additional patterns that don't. - -Also note that all the regular expressions used by inline must -capture the whole block. For this reason, they all start with -'^(.*)' and end with '(.*)!'. In case with built-in expression -Pattern takes care of adding the "^(.*)" and "(.*)!". - -Finally, the order in which regular expressions are applied is very -important - e.g. if we first replace http://.../ links with <a> tags -and _then_ try to replace inline html, we would end up with a mess. -So, we apply the expressions in the following order: - -* escape and backticks have to go before everything else, so - that we can preempt any markdown patterns by escaping them. - -* then we handle auto-links (must be done before inline html) - -* then we handle inline HTML. At this point we will simply - replace all inline HTML strings with a placeholder and add - the actual HTML to a hash. - -* then inline images (must be done before links) - -* then bracketed links, first regular then reference-style - -* finally we apply strong and emphasis -""" - -import markdown -import re -from urlparse import urlparse, urlunparse -import sys -if sys.version >= "3.0": - from html import entities as htmlentitydefs -else: - import htmlentitydefs - -""" -The actual regular expressions for patterns ------------------------------------------------------------------------------ -""" - -NOBRACKET = r'[^\]\[]*' -BRK = ( r'\[(' - + (NOBRACKET + r'(\[')*6 - + (NOBRACKET+ r'\])*')*6 - + NOBRACKET + r')\]' ) -NOIMG = r'(?<!\!)' - -BACKTICK_RE = r'(?<!\\)(`+)(.+?)(?<!`)\2(?!`)' # `e=f()` or ``e=f("`")`` -ESCAPE_RE = r'\\(.)' # \< -EMPHASIS_RE = r'(\*)([^\*]*)\2' # *emphasis* -STRONG_RE = r'(\*{2}|_{2})(.*?)\2' # **strong** -STRONG_EM_RE = r'(\*{3}|_{3})(.*?)\2' # ***strong*** - -if markdown.SMART_EMPHASIS: - EMPHASIS_2_RE = r'(?<!\S)(_)(\S.*?)\2' # _emphasis_ -else: - EMPHASIS_2_RE = r'(_)(.*?)\2' # _emphasis_ - -LINK_RE = NOIMG + BRK + \ -r'''\(\s*(<.*?>|((?:(?:\(.*?\))|[^\(\)]))*?)\s*((['"])(.*)\12)?\)''' -# [text](url) or [text](<url>) - -IMAGE_LINK_RE = r'\!' + BRK + r'\s*\((<.*?>|([^\)]*))\)' -#  or  -REFERENCE_RE = NOIMG + BRK+ r'\s*\[([^\]]*)\]' # [Google][3] -IMAGE_REFERENCE_RE = r'\!' + BRK + '\s*\[([^\]]*)\]' # ![alt text][2] -NOT_STRONG_RE = r'( \* )' # stand-alone * or _ -AUTOLINK_RE = r'<((?:f|ht)tps?://[^>]*)>' # <http://www.123.com> -AUTOMAIL_RE = r'<([^> \!]*@[^> ]*)>' # <me@example.com> - -HTML_RE = r'(\<([a-zA-Z/][^\>]*?|\!--.*?--)\>)' # <...> -ENTITY_RE = r'(&[\#a-zA-Z0-9]*;)' # & -LINE_BREAK_RE = r' \n' # two spaces at end of line -LINE_BREAK_2_RE = r' $' # two spaces at end of text - - -def dequote(string): - """Remove quotes from around a string.""" - if ( ( string.startswith('"') and string.endswith('"')) - or (string.startswith("'") and string.endswith("'")) ): - return string[1:-1] - else: - return string - -ATTR_RE = re.compile("\{@([^\}]*)=([^\}]*)}") # {@id=123} - -def handleAttributes(text, parent): - """Set values of an element based on attribute definitions ({@id=123}).""" - def attributeCallback(match): - parent.set(match.group(1), match.group(2).replace('\n', ' ')) - return ATTR_RE.sub(attributeCallback, text) - - -""" -The pattern classes ------------------------------------------------------------------------------ -""" - -class Pattern: - """Base class that inline patterns subclass. """ - - def __init__ (self, pattern, markdown_instance=None): - """ - Create an instant of an inline pattern. - - Keyword arguments: - - * pattern: A regular expression that matches a pattern - - """ - self.pattern = pattern - self.compiled_re = re.compile("^(.*?)%s(.*?)$" % pattern, re.DOTALL) - - # Api for Markdown to pass safe_mode into instance - self.safe_mode = False - if markdown_instance: - self.markdown = markdown_instance - - def getCompiledRegExp (self): - """ Return a compiled regular expression. """ - return self.compiled_re - - def handleMatch(self, m): - """Return a ElementTree element from the given match. - - Subclasses should override this method. - - Keyword arguments: - - * m: A re match object containing a match of the pattern. - - """ - pass - - def type(self): - """ Return class name, to define pattern type """ - return self.__class__.__name__ - -BasePattern = Pattern # for backward compatibility - -class SimpleTextPattern (Pattern): - """ Return a simple text of group(2) of a Pattern. """ - def handleMatch(self, m): - text = m.group(2) - if text == markdown.INLINE_PLACEHOLDER_PREFIX: - return None - return text - -class SimpleTagPattern (Pattern): - """ - Return element of type `tag` with a text attribute of group(3) - of a Pattern. - - """ - def __init__ (self, pattern, tag): - Pattern.__init__(self, pattern) - self.tag = tag - - def handleMatch(self, m): - el = markdown.etree.Element(self.tag) - el.text = m.group(3) - return el - - -class SubstituteTagPattern (SimpleTagPattern): - """ Return a eLement of type `tag` with no children. """ - def handleMatch (self, m): - return markdown.etree.Element(self.tag) - - -class BacktickPattern (Pattern): - """ Return a `<code>` element containing the matching text. """ - def __init__ (self, pattern): - Pattern.__init__(self, pattern) - self.tag = "code" - - def handleMatch(self, m): - el = markdown.etree.Element(self.tag) - el.text = markdown.AtomicString(m.group(3).strip()) - return el - - -class DoubleTagPattern (SimpleTagPattern): - """Return a ElementTree element nested in tag2 nested in tag1. - - Useful for strong emphasis etc. - - """ - def handleMatch(self, m): - tag1, tag2 = self.tag.split(",") - el1 = markdown.etree.Element(tag1) - el2 = markdown.etree.SubElement(el1, tag2) - el2.text = m.group(3) - return el1 - - -class HtmlPattern (Pattern): - """ Store raw inline html and return a placeholder. """ - def handleMatch (self, m): - rawhtml = m.group(2) - inline = True - place_holder = self.markdown.htmlStash.store(rawhtml) - return place_holder - - -class LinkPattern (Pattern): - """ Return a link element from the given match. """ - def handleMatch(self, m): - el = markdown.etree.Element("a") - el.text = m.group(2) - title = m.group(11) - href = m.group(9) - - if href: - if href[0] == "<": - href = href[1:-1] - el.set("href", self.sanitize_url(href.strip())) - else: - el.set("href", "") - - if title: - title = dequote(title) #.replace('"', """) - el.set("title", title) - return el - - def sanitize_url(self, url): - """ - Sanitize a url against xss attacks in "safe_mode". - - Rather than specifically blacklisting `javascript:alert("XSS")` and all - its aliases (see <http://ha.ckers.org/xss.html>), we whitelist known - safe url formats. Most urls contain a network location, however some - are known not to (i.e.: mailto links). Script urls do not contain a - location. Additionally, for `javascript:...`, the scheme would be - "javascript" but some aliases will appear to `urlparse()` to have no - scheme. On top of that relative links (i.e.: "foo/bar.html") have no - scheme. Therefore we must check "path", "parameters", "query" and - "fragment" for any literal colons. We don't check "scheme" for colons - because it *should* never have any and "netloc" must allow the form: - `username:password@host:port`. - - """ - locless_schemes = ['', 'mailto', 'news'] - scheme, netloc, path, params, query, fragment = url = urlparse(url) - safe_url = False - if netloc != '' or scheme in locless_schemes: - safe_url = True - - for part in url[2:]: - if ":" in part: - safe_url = False - - if self.markdown.safeMode and not safe_url: - return '' - else: - return urlunparse(url) - -class ImagePattern(LinkPattern): - """ Return a img element from the given match. """ - def handleMatch(self, m): - el = markdown.etree.Element("img") - src_parts = m.group(9).split() - if src_parts: - src = src_parts[0] - if src[0] == "<" and src[-1] == ">": - src = src[1:-1] - el.set('src', self.sanitize_url(src)) - else: - el.set('src', "") - if len(src_parts) > 1: - el.set('title', dequote(" ".join(src_parts[1:]))) - - if markdown.ENABLE_ATTRIBUTES: - truealt = handleAttributes(m.group(2), el) - else: - truealt = m.group(2) - - el.set('alt', truealt) - return el - -class ReferencePattern(LinkPattern): - """ Match to a stored reference and return link element. """ - def handleMatch(self, m): - if m.group(9): - id = m.group(9).lower() - else: - # if we got something like "[Google][]" - # we'll use "google" as the id - id = m.group(2).lower() - - if not id in self.markdown.references: # ignore undefined refs - return None - href, title = self.markdown.references[id] - - text = m.group(2) - return self.makeTag(href, title, text) - - def makeTag(self, href, title, text): - el = markdown.etree.Element('a') - - el.set('href', self.sanitize_url(href)) - if title: - el.set('title', title) - - el.text = text - return el - - -class ImageReferencePattern (ReferencePattern): - """ Match to a stored reference and return img element. """ - def makeTag(self, href, title, text): - el = markdown.etree.Element("img") - el.set("src", self.sanitize_url(href)) - if title: - el.set("title", title) - el.set("alt", text) - return el - - -class AutolinkPattern (Pattern): - """ Return a link Element given an autolink (`<http://example/com>`). """ - def handleMatch(self, m): - el = markdown.etree.Element("a") - el.set('href', m.group(2)) - el.text = markdown.AtomicString(m.group(2)) - return el - -class AutomailPattern (Pattern): - """ - Return a mailto link Element given an automail link (`<foo@example.com>`). - """ - def handleMatch(self, m): - el = markdown.etree.Element('a') - email = m.group(2) - if email.startswith("mailto:"): - email = email[len("mailto:"):] - - def codepoint2name(code): - """Return entity definition by code, or the code if not defined.""" - entity = htmlentitydefs.codepoint2name.get(code) - if entity: - return "%s%s;" % (markdown.AMP_SUBSTITUTE, entity) - else: - return "%s#%d;" % (markdown.AMP_SUBSTITUTE, code) - - letters = [codepoint2name(ord(letter)) for letter in email] - el.text = markdown.AtomicString(''.join(letters)) - - mailto = "mailto:" + email - mailto = "".join([markdown.AMP_SUBSTITUTE + '#%d;' % - ord(letter) for letter in mailto]) - el.set('href', mailto) - return el - |