diff options
37 files changed, 5348 insertions, 7 deletions
diff --git a/chrome/common/extensions/docs/server2/app.yaml b/chrome/common/extensions/docs/server2/app.yaml index bd7b532..57122a3 100644 --- a/chrome/common/extensions/docs/server2/app.yaml +++ b/chrome/common/extensions/docs/server2/app.yaml @@ -1,5 +1,5 @@ application: chrome-apps-doc -version: 3-0-3 +version: 3-0-4 runtime: python27 api_version: 1 threadsafe: false diff --git a/chrome/common/extensions/docs/server2/build_server.py b/chrome/common/extensions/docs/server2/build_server.py index 276213f..0b3d315 100755 --- a/chrome/common/extensions/docs/server2/build_server.py +++ b/chrome/common/extensions/docs/server2/build_server.py @@ -58,6 +58,8 @@ def main(): CopyThirdParty(os.path.join(THIRD_PARTY_DIR, 'handlebar'), 'handlebar') + CopyThirdParty(os.path.join(THIRD_PARTY_DIR, 'markdown'), 'markdown', + make_init=False) CopyThirdParty(os.path.join(SRC_DIR, 'ppapi', 'generators'), 'json_schema_compiler') CopyThirdParty(os.path.join(THIRD_PARTY_DIR, 'ply'), diff --git a/chrome/common/extensions/docs/server2/content_provider.py b/chrome/common/extensions/docs/server2/content_provider.py index f757023..6c11465 100644 --- a/chrome/common/extensions/docs/server2/content_provider.py +++ b/chrome/common/extensions/docs/server2/content_provider.py @@ -3,13 +3,15 @@ # found in the LICENSE file. import mimetypes -import os +import posixpath from compiled_file_system import SingleFile from directory_zipper import DirectoryZipper from docs_server_utils import ToUnicode +from file_system import FileNotFoundError from future import Gettable, Future from third_party.handlebar import Handlebar +from third_party.markdown import markdown class ContentAndType(object): @@ -55,7 +57,15 @@ class ContentProvider(object): def _CompileContent(self, path, text): assert text is not None, path mimetype = mimetypes.guess_type(path)[0] - if mimetype is None: + if posixpath.splitext(path)[1] == '.md': + # See http://pythonhosted.org/Markdown/extensions + # for details on "extensions=". + content = markdown(ToUnicode(text), + extensions=('extra', 'headerid', 'sane_lists')) + if self._supports_templates: + content = Handlebar(content, name=path) + mimetype = 'text/html' + elif mimetype is None: content = text mimetype = 'text/plain' elif mimetype == 'text/html': @@ -69,9 +79,24 @@ class ContentProvider(object): content = text return ContentAndType(content, mimetype) + def _MaybeMarkdown(self, path): + if posixpath.splitext(path)[1] != '.html': + return path + + dirname, file_name = posixpath.split(path) + if dirname != '': + dirname = dirname + '/' + file_list = self.file_system.ReadSingle(dirname).Get() + if file_name in file_list: + return path + + if posixpath.splitext(file_name)[0] + '.md' in file_list: + return posixpath.splitext(path)[0] + '.md' + return path + def GetContentAndType(self, path): path = path.lstrip('/') - base, ext = os.path.splitext(path) + base, ext = posixpath.splitext(path) # Check for a zip file first, if zip is enabled. if self._directory_zipper and ext == '.zip': @@ -79,7 +104,7 @@ class ContentProvider(object): return Future(delegate=Gettable( lambda: ContentAndType(zip_future.Get(), 'application/zip'))) - return self._content_cache.GetFromFile(path) + return self._content_cache.GetFromFile(self._MaybeMarkdown(path)) def Cron(self): # Running Refresh() on the file system is enough to pull GitHub content, diff --git a/chrome/common/extensions/docs/server2/content_provider_test.py b/chrome/common/extensions/docs/server2/content_provider_test.py index d672aca..3e4f647 100755 --- a/chrome/common/extensions/docs/server2/content_provider_test.py +++ b/chrome/common/extensions/docs/server2/content_provider_test.py @@ -15,13 +15,20 @@ from object_store_creator import ObjectStoreCreator from test_file_system import TestFileSystem from third_party.handlebar import Handlebar - _REDIRECTS_JSON = json.dumps({ 'oldfile.html': 'storage.html', 'index.html': 'https://developers.google.com/chrome', }) +_MARKDOWN_CONTENT = ( + ('# Header 1 #', u'<h1 id="header-1">Header 1</h1>'), + ('1. Foo\n', u'<ol>\n<li>Foo</li>\n</ol>'), + ('\n', + '<p><img alt="alt text" src="/path/img.jpg" title="Title" /></p>'), + ('* Unordered item 1', u'<ul>\n<li>Unordered item 1</li>\n</ul>') +) + # Test file system data which exercises many different mimetypes. _TEST_DATA = { 'dir': { @@ -46,6 +53,7 @@ _TEST_DATA = { 'run.js': 'run.js content', 'site.css': 'site.css content', 'storage.html': 'storage.html content', + 'markdown.md': '\n'.join(text[0] for text in _MARKDOWN_CONTENT) } @@ -120,6 +128,13 @@ class ContentProviderUnittest(unittest.TestCase): ['dir3/a.txt', 'dir3/b.txt', 'dir3/c/d.txt'], 'application/zip', content_and_type) + def testMarkdown(self): + content_and_type = self._content_provider.GetContentAndType( + 'markdown.html').Get() + content_and_type.content = content_and_type.content.source + self._assertContent('\n'.join(text[1] for text in _MARKDOWN_CONTENT), + 'text/html', content_and_type) + def testNotFound(self): self.assertRaises( FileNotFoundError, diff --git a/chrome/common/extensions/docs/server2/cron.yaml b/chrome/common/extensions/docs/server2/cron.yaml index 329407f..4640c8a 100644 --- a/chrome/common/extensions/docs/server2/cron.yaml +++ b/chrome/common/extensions/docs/server2/cron.yaml @@ -2,4 +2,4 @@ cron: - description: Repopulates all cached data. url: /_cron schedule: every 5 minutes - target: 3-0-3 + target: 3-0-4
\ No newline at end of file diff --git a/third_party/markdown/LICENSE b/third_party/markdown/LICENSE new file mode 100644 index 0000000..4cd8b14 --- /dev/null +++ b/third_party/markdown/LICENSE @@ -0,0 +1,30 @@ +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. + diff --git a/third_party/markdown/OWNERS b/third_party/markdown/OWNERS new file mode 100644 index 0000000..57fc739 --- /dev/null +++ b/third_party/markdown/OWNERS @@ -0,0 +1,2 @@ +hukun@chromium.org +kalman@chromium.org diff --git a/third_party/markdown/README.chromium b/third_party/markdown/README.chromium new file mode 100644 index 0000000..1d0f218 --- /dev/null +++ b/third_party/markdown/README.chromium @@ -0,0 +1,12 @@ +Name: markdown, a text-to-HTML conversion tool for web writers +Short Name: markdown +URL: https://pypi.python.org/pypi/Markdown +Version: 2.3.1 +Date: March 22, 2013 +Revision: commit 0ea0bac85a749a13381b721cde44214d9193406c +License: BSD License +License File: LICENSE +Security Critical: no + +Description: +Markdown allows you to write using an easy-to-read, easy-to-write plain text format, then convert it to structurally valid XHTML (or HTML). diff --git a/third_party/markdown/__init__.py b/third_party/markdown/__init__.py new file mode 100644 index 0000000..f352f4b --- /dev/null +++ b/third_party/markdown/__init__.py @@ -0,0 +1,443 @@ +""" +Python Markdown +=============== + +Python Markdown converts Markdown to HTML and can be used as a library or +called from the command line. + +## Basic usage as a module: + + import markdown + html = markdown.markdown(your_text_string) + +See <http://packages.python.org/Markdown/> for more +information and instructions on how to extend the functionality of +Python Markdown. Read that before you try modifying this file. + +## Authors and License + +Started by [Manfred Stienstra](http://www.dwerg.net/). Continued and +maintained by [Yuri Takhteyev](http://www.freewisdom.org), [Waylan +Limberg](http://achinghead.com/) and [Artem Yunusov](http://blog.splyer.com). + +Contact: markdown@freewisdom.org + +Copyright 2007-2013 The Python Markdown Project (v. 1.7 and later) +Copyright 200? Django Software Foundation (OrderedDict implementation) +Copyright 2004, 2005, 2006 Yuri Takhteyev (v. 0.2-1.6b) +Copyright 2004 Manfred Stienstra (the original version) + +License: BSD (see LICENSE for details). +""" + +from __future__ import absolute_import +from __future__ import unicode_literals +from .__version__ import version, version_info +import re +import codecs +import sys +import logging +from . import util +from .preprocessors import build_preprocessors +from .blockprocessors import build_block_parser +from .treeprocessors import build_treeprocessors +from .inlinepatterns import build_inlinepatterns +from .postprocessors import build_postprocessors +from .extensions import Extension +from .serializers import to_html_string, to_xhtml_string + +__all__ = ['Markdown', 'markdown', 'markdownFromFile'] + +logger = logging.getLogger('MARKDOWN') + + +class Markdown(object): + """Convert Markdown to HTML.""" + + doc_tag = "div" # Element used to wrap document - later removed + + option_defaults = { + 'html_replacement_text' : '[HTML_REMOVED]', + 'tab_length' : 4, + 'enable_attributes' : True, + 'smart_emphasis' : True, + 'lazy_ol' : True, + } + + output_formats = { + 'html' : to_html_string, + 'html4' : to_html_string, + 'html5' : to_html_string, + 'xhtml' : to_xhtml_string, + 'xhtml1': to_xhtml_string, + 'xhtml5': to_xhtml_string, + } + + ESCAPED_CHARS = ['\\', '`', '*', '_', '{', '}', '[', ']', + '(', ')', '>', '#', '+', '-', '.', '!'] + + def __init__(self, *args, **kwargs): + """ + Creates a new Markdown instance. + + Keyword arguments: + + * extensions: A list of extensions. + If they are of type string, the module mdx_name.py will be loaded. + If they are a subclass of markdown.Extension, they will be used + as-is. + * extension_configs: Configuration settingis for extensions. + * output_format: Format of output. Supported formats are: + * "xhtml1": Outputs XHTML 1.x. Default. + * "xhtml5": Outputs XHTML style tags of HTML 5 + * "xhtml": Outputs latest supported version of XHTML (currently XHTML 1.1). + * "html4": Outputs HTML 4 + * "html5": Outputs HTML style tags of HTML 5 + * "html": Outputs latest supported version of HTML (currently HTML 4). + Note that it is suggested that the more specific formats ("xhtml1" + and "html4") be used as "xhtml" or "html" may change in the future + if it makes sense at that time. + * safe_mode: Disallow raw html. One of "remove", "replace" or "escape". + * html_replacement_text: Text used when safe_mode is set to "replace". + * tab_length: Length of tabs in the source. Default: 4 + * enable_attributes: Enable the conversion of attributes. Default: True + * smart_emphasis: Treat `_connected_words_` intelegently Default: True + * lazy_ol: Ignore number of first item of ordered lists. Default: True + + """ + + # For backward compatibility, loop through old positional args + pos = ['extensions', 'extension_configs', 'safe_mode', 'output_format'] + c = 0 + for arg in args: + if pos[c] not in kwargs: + kwargs[pos[c]] = arg + c += 1 + if c == len(pos): + # ignore any additional args + break + + # Loop through kwargs and assign defaults + for option, default in self.option_defaults.items(): + setattr(self, option, kwargs.get(option, default)) + + self.safeMode = kwargs.get('safe_mode', False) + if self.safeMode and 'enable_attributes' not in kwargs: + # Disable attributes in safeMode when not explicitly set + self.enable_attributes = False + + self.registeredExtensions = [] + self.docType = "" + self.stripTopLevelTags = True + + self.build_parser() + + self.references = {} + self.htmlStash = util.HtmlStash() + self.set_output_format(kwargs.get('output_format', 'xhtml1')) + self.registerExtensions(extensions=kwargs.get('extensions', []), + configs=kwargs.get('extension_configs', {})) + self.reset() + + def build_parser(self): + """ Build the parser from the various parts. """ + self.preprocessors = build_preprocessors(self) + self.parser = build_block_parser(self) + self.inlinePatterns = build_inlinepatterns(self) + self.treeprocessors = build_treeprocessors(self) + self.postprocessors = build_postprocessors(self) + return self + + def registerExtensions(self, extensions, configs): + """ + Register extensions with this instance of Markdown. + + Keyword arguments: + + * extensions: A list of extensions, which can either + be strings or objects. See the docstring on Markdown. + * configs: A dictionary mapping module names to config options. + + """ + for ext in extensions: + if isinstance(ext, util.string_type): + ext = self.build_extension(ext, configs.get(ext, [])) + if isinstance(ext, Extension): + ext.extendMarkdown(self, globals()) + elif ext is not None: + raise TypeError( + 'Extension "%s.%s" must be of type: "markdown.Extension"' + % (ext.__class__.__module__, ext.__class__.__name__)) + + return self + + def build_extension(self, ext_name, configs = []): + """Build extension by name, then return the module. + + The extension name may contain arguments as part of the string in the + following format: "extname(key1=value1,key2=value2)" + + """ + + # Parse extensions config params (ignore the order) + configs = dict(configs) + pos = ext_name.find("(") # find the first "(" + if pos > 0: + ext_args = ext_name[pos+1:-1] + ext_name = ext_name[:pos] + pairs = [x.split("=") for x in ext_args.split(",")] + configs.update([(x.strip(), y.strip()) for (x, y) in pairs]) + + # Setup the module name + module_name = ext_name + if '.' not in ext_name: + module_name = '.'.join(['third_party.markdown.extensions', ext_name]) + + # Try loading the extension first from one place, then another + try: # New style (markdown.extensons.<extension>) + module = __import__(module_name, {}, {}, [module_name.rpartition('.')[0]]) + except ImportError: + module_name_old_style = '_'.join(['mdx', ext_name]) + try: # Old style (mdx_<extension>) + module = __import__(module_name_old_style) + except ImportError as e: + message = "Failed loading extension '%s' from '%s' or '%s'" \ + % (ext_name, module_name, module_name_old_style) + e.args = (message,) + e.args[1:] + raise + + # If the module is loaded successfully, we expect it to define a + # function called makeExtension() + try: + return module.makeExtension(configs.items()) + except AttributeError as e: + message = e.args[0] + message = "Failed to initiate extension " \ + "'%s': %s" % (ext_name, message) + e.args = (message,) + e.args[1:] + raise + + def registerExtension(self, extension): + """ This gets called by the extension """ + self.registeredExtensions.append(extension) + return self + + def reset(self): + """ + Resets all state variables so that we can start with a new text. + """ + self.htmlStash.reset() + self.references.clear() + + for extension in self.registeredExtensions: + if hasattr(extension, 'reset'): + extension.reset() + + return self + + def set_output_format(self, format): + """ Set the output format for the class instance. """ + self.output_format = format.lower() + try: + self.serializer = self.output_formats[self.output_format] + except KeyError as e: + valid_formats = list(self.output_formats.keys()) + valid_formats.sort() + message = 'Invalid Output Format: "%s". Use one of %s.' \ + % (self.output_format, + '"' + '", "'.join(valid_formats) + '"') + e.args = (message,) + e.args[1:] + raise + return self + + def convert(self, source): + """ + Convert markdown to serialized XHTML or HTML. + + Keyword arguments: + + * source: Source text as a Unicode string. + + Markdown processing takes place in five steps: + + 1. A bunch of "preprocessors" munge the input text. + 2. BlockParser() parses the high-level structural elements of the + pre-processed text into an ElementTree. + 3. A bunch of "treeprocessors" are run against the ElementTree. One + such treeprocessor runs InlinePatterns against the ElementTree, + detecting inline markup. + 4. Some post-processors are run against the text after the ElementTree + has been serialized into text. + 5. The output is written to a string. + + """ + + # Fixup the source text + if not source.strip(): + return '' # a blank unicode string + + try: + source = util.text_type(source) + except UnicodeDecodeError as e: + # Customise error message while maintaining original trackback + e.reason += '. -- Note: Markdown only accepts unicode input!' + raise + + # Split into lines and run the line preprocessors. + self.lines = source.split("\n") + for prep in self.preprocessors.values(): + self.lines = prep.run(self.lines) + + # Parse the high-level elements. + root = self.parser.parseDocument(self.lines).getroot() + + # Run the tree-processors + for treeprocessor in self.treeprocessors.values(): + newRoot = treeprocessor.run(root) + if newRoot: + root = newRoot + + # Serialize _properly_. Strip top-level tags. + output = self.serializer(root) + if self.stripTopLevelTags: + try: + start = output.index('<%s>'%self.doc_tag)+len(self.doc_tag)+2 + end = output.rindex('</%s>'%self.doc_tag) + output = output[start:end].strip() + except ValueError: + if output.strip().endswith('<%s />'%self.doc_tag): + # We have an empty document + output = '' + else: + # We have a serious problem + raise ValueError('Markdown failed to strip top-level tags. Document=%r' % output.strip()) + + # Run the text post-processors + for pp in self.postprocessors.values(): + output = pp.run(output) + + return output.strip() + + def convertFile(self, input=None, output=None, encoding=None): + """Converts a markdown file and returns the HTML as a unicode string. + + Decodes the file using the provided encoding (defaults to utf-8), + passes the file content to markdown, and outputs the html to either + the provided stream or the file with provided name, using the same + encoding as the source file. The 'xmlcharrefreplace' error handler is + used when encoding the output. + + **Note:** This is the only place that decoding and encoding of unicode + takes place in Python-Markdown. (All other code is unicode-in / + unicode-out.) + + Keyword arguments: + + * input: File object or path. Reads from stdin if `None`. + * output: File object or path. Writes to stdout if `None`. + * encoding: Encoding of input and output files. Defaults to utf-8. + + """ + + encoding = encoding or "utf-8" + + # Read the source + if input: + if isinstance(input, util.string_type): + input_file = codecs.open(input, mode="r", encoding=encoding) + else: + input_file = codecs.getreader(encoding)(input) + text = input_file.read() + input_file.close() + else: + text = sys.stdin.read() + if not isinstance(text, util.text_type): + text = text.decode(encoding) + + text = text.lstrip('\ufeff') # remove the byte-order mark + + # Convert + html = self.convert(text) + + # Write to file or stdout + if output: + if isinstance(output, util.string_type): + output_file = codecs.open(output, "w", + encoding=encoding, + errors="xmlcharrefreplace") + output_file.write(html) + output_file.close() + else: + writer = codecs.getwriter(encoding) + output_file = writer(output, errors="xmlcharrefreplace") + output_file.write(html) + # Don't close here. User may want to write more. + else: + # Encode manually and write bytes to stdout. + html = html.encode(encoding, "xmlcharrefreplace") + try: + # Write bytes directly to buffer (Python 3). + sys.stdout.buffer.write(html) + except AttributeError: + # Probably Python 2, which works with bytes by default. + sys.stdout.write(html) + + return self + + +""" +EXPORTED FUNCTIONS +============================================================================= + +Those are the two functions we really mean to export: markdown() and +markdownFromFile(). +""" + +def markdown(text, *args, **kwargs): + """Convert a markdown string to HTML and return HTML as a unicode string. + + This is a shortcut function for `Markdown` class to cover the most + basic use case. It initializes an instance of Markdown, loads the + necessary extensions and runs the parser on the given text. + + Keyword arguments: + + * text: Markdown formatted text as Unicode or ASCII string. + * Any arguments accepted by the Markdown class. + + Returns: An HTML document as a string. + + """ + md = Markdown(*args, **kwargs) + return md.convert(text) + + +def markdownFromFile(*args, **kwargs): + """Read markdown code from a file and write it to a file or a stream. + + This is a shortcut function which initializes an instance of Markdown, + and calls the convertFile method rather than convert. + + Keyword arguments: + + * input: a file name or readable object. + * output: a file name or writable object. + * encoding: Encoding of input and output. + * Any arguments accepted by the Markdown class. + + """ + # For backward compatibility loop through positional args + pos = ['input', 'output', 'extensions', 'encoding'] + c = 0 + for arg in args: + if pos[c] not in kwargs: + kwargs[pos[c]] = arg + c += 1 + if c == len(pos): + break + + md = Markdown(**kwargs) + md.convertFile(kwargs.get('input', None), + kwargs.get('output', None), + kwargs.get('encoding', None)) + diff --git a/third_party/markdown/__main__.py b/third_party/markdown/__main__.py new file mode 100644 index 0000000..8ee8c82 --- /dev/null +++ b/third_party/markdown/__main__.py @@ -0,0 +1,87 @@ +""" +COMMAND-LINE SPECIFIC STUFF +============================================================================= + +""" + +import markdown +import sys +import optparse + +import logging +from logging import DEBUG, INFO, CRITICAL + +logger = logging.getLogger('MARKDOWN') + +def parse_options(): + """ + Define and parse `optparse` options for command-line usage. + """ + usage = """%prog [options] [INPUTFILE] + (STDIN is assumed if no INPUTFILE is given)""" + desc = "A Python implementation of John Gruber's Markdown. " \ + "http://packages.python.org/Markdown/" + ver = "%%prog %s" % markdown.version + + parser = optparse.OptionParser(usage=usage, description=desc, version=ver) + parser.add_option("-f", "--file", dest="filename", default=None, + help="Write output to OUTPUT_FILE. Defaults to STDOUT.", + metavar="OUTPUT_FILE") + parser.add_option("-e", "--encoding", dest="encoding", + help="Encoding for input and output files.",) + parser.add_option("-q", "--quiet", default = CRITICAL, + action="store_const", const=CRITICAL+10, dest="verbose", + help="Suppress all warnings.") + parser.add_option("-v", "--verbose", + action="store_const", const=INFO, dest="verbose", + help="Print all warnings.") + parser.add_option("-s", "--safe", dest="safe", default=False, + metavar="SAFE_MODE", + help="'replace', 'remove' or 'escape' HTML tags in input") + parser.add_option("-o", "--output_format", dest="output_format", + default='xhtml1', metavar="OUTPUT_FORMAT", + help="'xhtml1' (default), 'html4' or 'html5'.") + parser.add_option("--noisy", + action="store_const", const=DEBUG, dest="verbose", + help="Print debug messages.") + parser.add_option("-x", "--extension", action="append", dest="extensions", + help = "Load extension EXTENSION.", metavar="EXTENSION") + parser.add_option("-n", "--no_lazy_ol", dest="lazy_ol", + action='store_false', default=True, + help="Observe number of first item of ordered lists.") + + (options, args) = parser.parse_args() + + if len(args) == 0: + input_file = None + else: + input_file = args[0] + + if not options.extensions: + options.extensions = [] + + return {'input': input_file, + 'output': options.filename, + 'safe_mode': options.safe, + 'extensions': options.extensions, + 'encoding': options.encoding, + 'output_format': options.output_format, + 'lazy_ol': options.lazy_ol}, options.verbose + +def run(): + """Run Markdown from the command line.""" + + # Parse options and adjust logging level if necessary + options, logging_level = parse_options() + if not options: sys.exit(2) + logger.setLevel(logging_level) + logger.addHandler(logging.StreamHandler()) + + # Run + markdown.markdownFromFile(**options) + +if __name__ == '__main__': + # Support running module as a commandline command. + # Python 2.5 & 2.6 do: `python -m markdown.__main__ [options] [args]`. + # Python 2.7 & 3.x do: `python -m markdown [options] [args]`. + run() diff --git a/third_party/markdown/__version__.py b/third_party/markdown/__version__.py new file mode 100644 index 0000000..a13559c --- /dev/null +++ b/third_party/markdown/__version__.py @@ -0,0 +1,28 @@ +# +# markdown/__version__.py +# +# version_info should conform to PEP 386 +# (major, minor, micro, alpha/beta/rc/final, #) +# (1, 1, 2, 'alpha', 0) => "1.1.2.dev" +# (1, 2, 0, 'beta', 2) => "1.2b2" +version_info = (2, 3, 1, 'final', 0) + +def _get_version(): + " Returns a PEP 386-compliant version number from version_info. " + assert len(version_info) == 5 + assert version_info[3] in ('alpha', 'beta', 'rc', 'final') + + parts = 2 if version_info[2] == 0 else 3 + main = '.'.join(map(str, version_info[:parts])) + + sub = '' + if version_info[3] == 'alpha' and version_info[4] == 0: + # TODO: maybe append some sort of git info here?? + sub = '.dev' + elif version_info[3] != 'final': + mapping = {'alpha': 'a', 'beta': 'b', 'rc': 'c'} + sub = mapping[version_info[3]] + str(version_info[4]) + + return str(main + sub) + +version = _get_version() diff --git a/third_party/markdown/blockparser.py b/third_party/markdown/blockparser.py new file mode 100644 index 0000000..4504a16 --- /dev/null +++ b/third_party/markdown/blockparser.py @@ -0,0 +1,99 @@ +from __future__ import unicode_literals +from __future__ import absolute_import +from . import util +from . import odict + +class State(list): + """ Track the current and nested state of the parser. + + This utility class is used to track the state of the BlockParser and + support multiple levels if nesting. It's just a simple API wrapped around + a list. Each time a state is set, that state is appended to the end of the + list. Each time a state is reset, that state is removed from the end of + the list. + + Therefore, each time a state is set for a nested block, that state must be + reset when we back out of that level of nesting or the state could be + corrupted. + + While all the methods of a list object are available, only the three + defined below need be used. + + """ + + def set(self, state): + """ Set a new state. """ + self.append(state) + + def reset(self): + """ Step back one step in nested state. """ + self.pop() + + def isstate(self, state): + """ Test that top (current) level is of given state. """ + if len(self): + return self[-1] == state + else: + return False + +class BlockParser: + """ Parse Markdown blocks into an ElementTree object. + + A wrapper class that stitches the various BlockProcessors together, + looping through them and creating an ElementTree object. + """ + + def __init__(self, markdown): + self.blockprocessors = odict.OrderedDict() + self.state = State() + self.markdown = markdown + + def parseDocument(self, lines): + """ Parse a markdown document into an ElementTree. + + Given a list of lines, an ElementTree object (not just a parent Element) + is created and the root element is passed to the parser as the parent. + The ElementTree object is returned. + + This should only be called on an entire document, not pieces. + + """ + # Create a ElementTree from the lines + self.root = util.etree.Element(self.markdown.doc_tag) + self.parseChunk(self.root, '\n'.join(lines)) + return util.etree.ElementTree(self.root) + + def parseChunk(self, parent, text): + """ Parse a chunk of markdown text and attach to given etree node. + + While the ``text`` argument is generally assumed to contain multiple + blocks which will be split on blank lines, it could contain only one + block. Generally, this method would be called by extensions when + block parsing is required. + + The ``parent`` etree Element passed in is altered in place. + Nothing is returned. + + """ + self.parseBlocks(parent, text.split('\n\n')) + + def parseBlocks(self, parent, blocks): + """ Process blocks of markdown text and attach to given etree node. + + Given a list of ``blocks``, each blockprocessor is stepped through + until there are no blocks left. While an extension could potentially + call this method directly, it's generally expected to be used internally. + + This is a public method as an extension may need to add/alter additional + BlockProcessors which call this method to recursively parse a nested + block. + + """ + while blocks: + for processor in self.blockprocessors.values(): + if processor.test(parent, blocks[0]): + if processor.run(parent, blocks) is not False: + # run returns True or None + break + + diff --git a/third_party/markdown/blockprocessors.py b/third_party/markdown/blockprocessors.py new file mode 100644 index 0000000..61977b4 --- /dev/null +++ b/third_party/markdown/blockprocessors.py @@ -0,0 +1,558 @@ +""" +CORE MARKDOWN BLOCKPARSER +=========================================================================== + +This parser handles basic parsing of Markdown blocks. It doesn't concern itself +with inline elements such as **bold** or *italics*, but rather just catches +blocks, lists, quotes, etc. + +The BlockParser is made up of a bunch of BlockProssors, each handling a +different type of block. Extensions may add/replace/remove BlockProcessors +as they need to alter how markdown blocks are parsed. +""" + +from __future__ import absolute_import +from __future__ import division +from __future__ import unicode_literals +import logging +import re +from . import util +from .blockparser import BlockParser + +logger = logging.getLogger('MARKDOWN') + + +def build_block_parser(md_instance, **kwargs): + """ Build the default block parser used by Markdown. """ + parser = BlockParser(md_instance) + parser.blockprocessors['empty'] = EmptyBlockProcessor(parser) + parser.blockprocessors['indent'] = ListIndentProcessor(parser) + parser.blockprocessors['code'] = CodeBlockProcessor(parser) + parser.blockprocessors['hashheader'] = HashHeaderProcessor(parser) + parser.blockprocessors['setextheader'] = SetextHeaderProcessor(parser) + parser.blockprocessors['hr'] = HRProcessor(parser) + parser.blockprocessors['olist'] = OListProcessor(parser) + parser.blockprocessors['ulist'] = UListProcessor(parser) + parser.blockprocessors['quote'] = BlockQuoteProcessor(parser) + parser.blockprocessors['paragraph'] = ParagraphProcessor(parser) + return parser + + +class BlockProcessor: + """ Base class for block processors. + + Each subclass will provide the methods below to work with the source and + tree. Each processor will need to define it's own ``test`` and ``run`` + methods. The ``test`` method should return True or False, to indicate + whether the current block should be processed by this processor. If the + test passes, the parser will call the processors ``run`` method. + + """ + + def __init__(self, parser): + self.parser = parser + self.tab_length = parser.markdown.tab_length + + def lastChild(self, parent): + """ Return the last child of an etree element. """ + if len(parent): + return parent[-1] + else: + return None + + def detab(self, text): + """ Remove a tab from the front of each line of the given text. """ + newtext = [] + lines = text.split('\n') + for line in lines: + if line.startswith(' '*self.tab_length): + newtext.append(line[self.tab_length:]) + elif not line.strip(): + newtext.append('') + else: + break + return '\n'.join(newtext), '\n'.join(lines[len(newtext):]) + + def looseDetab(self, text, level=1): + """ Remove a tab from front of lines but allowing dedented lines. """ + lines = text.split('\n') + for i in range(len(lines)): + if lines[i].startswith(' '*self.tab_length*level): + lines[i] = lines[i][self.tab_length*level:] + return '\n'.join(lines) + + def test(self, parent, block): + """ Test for block type. Must be overridden by subclasses. + + As the parser loops through processors, it will call the ``test`` method + on each to determine if the given block of text is of that type. This + method must return a boolean ``True`` or ``False``. The actual method of + testing is left to the needs of that particular block type. It could + be as simple as ``block.startswith(some_string)`` or a complex regular + expression. As the block type may be different depending on the parent + of the block (i.e. inside a list), the parent etree element is also + provided and may be used as part of the test. + + Keywords: + + * ``parent``: A etree element which will be the parent of the block. + * ``block``: A block of text from the source which has been split at + blank lines. + """ + pass + + def run(self, parent, blocks): + """ Run processor. Must be overridden by subclasses. + + When the parser determines the appropriate type of a block, the parser + will call the corresponding processor's ``run`` method. This method + should parse the individual lines of the block and append them to + the etree. + + Note that both the ``parent`` and ``etree`` keywords are pointers + to instances of the objects which should be edited in place. Each + processor must make changes to the existing objects as there is no + mechanism to return new/different objects to replace them. + + This means that this method should be adding SubElements or adding text + to the parent, and should remove (``pop``) or add (``insert``) items to + the list of blocks. + + Keywords: + + * ``parent``: A etree element which is the parent of the current block. + * ``blocks``: A list of all remaining blocks of the document. + """ + pass + + +class ListIndentProcessor(BlockProcessor): + """ Process children of list items. + + Example: + * a list item + process this part + + or this part + + """ + + ITEM_TYPES = ['li'] + LIST_TYPES = ['ul', 'ol'] + + def __init__(self, *args): + BlockProcessor.__init__(self, *args) + self.INDENT_RE = re.compile(r'^(([ ]{%s})+)'% self.tab_length) + + def test(self, parent, block): + return block.startswith(' '*self.tab_length) and \ + not self.parser.state.isstate('detabbed') and \ + (parent.tag in self.ITEM_TYPES or \ + (len(parent) and parent[-1] and \ + (parent[-1].tag in self.LIST_TYPES) + ) + ) + + def run(self, parent, blocks): + block = blocks.pop(0) + level, sibling = self.get_level(parent, block) + block = self.looseDetab(block, level) + + self.parser.state.set('detabbed') + if parent.tag in self.ITEM_TYPES: + # It's possible that this parent has a 'ul' or 'ol' child list + # with a member. If that is the case, then that should be the + # parent. This is intended to catch the edge case of an indented + # list whose first member was parsed previous to this point + # see OListProcessor + if len(parent) and parent[-1].tag in self.LIST_TYPES: + self.parser.parseBlocks(parent[-1], [block]) + else: + # The parent is already a li. Just parse the child block. + self.parser.parseBlocks(parent, [block]) + elif sibling.tag in self.ITEM_TYPES: + # The sibling is a li. Use it as parent. + self.parser.parseBlocks(sibling, [block]) + elif len(sibling) and sibling[-1].tag in self.ITEM_TYPES: + # The parent is a list (``ol`` or ``ul``) which has children. + # Assume the last child li is the parent of this block. + if sibling[-1].text: + # If the parent li has text, that text needs to be moved to a p + # The p must be 'inserted' at beginning of list in the event + # that other children already exist i.e.; a nested sublist. + p = util.etree.Element('p') + p.text = sibling[-1].text + sibling[-1].text = '' + sibling[-1].insert(0, p) + self.parser.parseChunk(sibling[-1], block) + else: + self.create_item(sibling, block) + self.parser.state.reset() + + def create_item(self, parent, block): + """ Create a new li and parse the block with it as the parent. """ + li = util.etree.SubElement(parent, 'li') + self.parser.parseBlocks(li, [block]) + + def get_level(self, parent, block): + """ Get level of indent based on list level. """ + # Get indent level + m = self.INDENT_RE.match(block) + if m: + indent_level = len(m.group(1))/self.tab_length + else: + indent_level = 0 + if self.parser.state.isstate('list'): + # We're in a tightlist - so we already are at correct parent. + level = 1 + else: + # We're in a looselist - so we need to find parent. + level = 0 + # Step through children of tree to find matching indent level. + while indent_level > level: + child = self.lastChild(parent) + if child and (child.tag in self.LIST_TYPES or child.tag in self.ITEM_TYPES): + if child.tag in self.LIST_TYPES: + level += 1 + parent = child + else: + # No more child levels. If we're short of indent_level, + # we have a code block. So we stop here. + break + return level, parent + + +class CodeBlockProcessor(BlockProcessor): + """ Process code blocks. """ + + def test(self, parent, block): + return block.startswith(' '*self.tab_length) + + def run(self, parent, blocks): + sibling = self.lastChild(parent) + block = blocks.pop(0) + theRest = '' + if sibling and sibling.tag == "pre" and len(sibling) \ + and sibling[0].tag == "code": + # The previous block was a code block. As blank lines do not start + # new code blocks, append this block to the previous, adding back + # linebreaks removed from the split into a list. + code = sibling[0] + block, theRest = self.detab(block) + code.text = util.AtomicString('%s\n%s\n' % (code.text, block.rstrip())) + else: + # This is a new codeblock. Create the elements and insert text. + pre = util.etree.SubElement(parent, 'pre') + code = util.etree.SubElement(pre, 'code') + block, theRest = self.detab(block) + code.text = util.AtomicString('%s\n' % block.rstrip()) + if theRest: + # This block contained unindented line(s) after the first indented + # line. Insert these lines as the first block of the master blocks + # list for future processing. + blocks.insert(0, theRest) + + +class BlockQuoteProcessor(BlockProcessor): + + RE = re.compile(r'(^|\n)[ ]{0,3}>[ ]?(.*)') + + def test(self, parent, block): + return bool(self.RE.search(block)) + + def run(self, parent, blocks): + block = blocks.pop(0) + m = self.RE.search(block) + if m: + before = block[:m.start()] # Lines before blockquote + # Pass lines before blockquote in recursively for parsing forst. + self.parser.parseBlocks(parent, [before]) + # Remove ``> `` from begining of each line. + block = '\n'.join([self.clean(line) for line in + block[m.start():].split('\n')]) + sibling = self.lastChild(parent) + if sibling and sibling.tag == "blockquote": + # Previous block was a blockquote so set that as this blocks parent + quote = sibling + else: + # This is a new blockquote. Create a new parent element. + quote = util.etree.SubElement(parent, 'blockquote') + # Recursively parse block with blockquote as parent. + # change parser state so blockquotes embedded in lists use p tags + self.parser.state.set('blockquote') + self.parser.parseChunk(quote, block) + self.parser.state.reset() + + def clean(self, line): + """ Remove ``>`` from beginning of a line. """ + m = self.RE.match(line) + if line.strip() == ">": + return "" + elif m: + return m.group(2) + else: + return line + +class OListProcessor(BlockProcessor): + """ Process ordered list blocks. """ + + TAG = 'ol' + # Detect an item (``1. item``). ``group(1)`` contains contents of item. + RE = re.compile(r'^[ ]{0,3}\d+\.[ ]+(.*)') + # Detect items on secondary lines. they can be of either list type. + CHILD_RE = re.compile(r'^[ ]{0,3}((\d+\.)|[*+-])[ ]+(.*)') + # Detect indented (nested) items of either type + INDENT_RE = re.compile(r'^[ ]{4,7}((\d+\.)|[*+-])[ ]+.*') + # The integer (python string) with which the lists starts (default=1) + # Eg: If list is intialized as) + # 3. Item + # The ol tag will get starts="3" attribute + STARTSWITH = '1' + # List of allowed sibling tags. + SIBLING_TAGS = ['ol', 'ul'] + + def test(self, parent, block): + return bool(self.RE.match(block)) + + def run(self, parent, blocks): + # Check fr multiple items in one block. + items = self.get_items(blocks.pop(0)) + sibling = self.lastChild(parent) + + if sibling and sibling.tag in self.SIBLING_TAGS: + # Previous block was a list item, so set that as parent + lst = sibling + # make sure previous item is in a p- if the item has text, then it + # it isn't in a p + if lst[-1].text: + # since it's possible there are other children for this sibling, + # we can't just SubElement the p, we need to insert it as the + # first item + p = util.etree.Element('p') + p.text = lst[-1].text + lst[-1].text = '' + lst[-1].insert(0, p) + # if the last item has a tail, then the tail needs to be put in a p + # likely only when a header is not followed by a blank line + lch = self.lastChild(lst[-1]) + if lch is not None and lch.tail: + p = util.etree.SubElement(lst[-1], 'p') + p.text = lch.tail.lstrip() + lch.tail = '' + + # parse first block differently as it gets wrapped in a p. + li = util.etree.SubElement(lst, 'li') + self.parser.state.set('looselist') + firstitem = items.pop(0) + self.parser.parseBlocks(li, [firstitem]) + self.parser.state.reset() + elif parent.tag in ['ol', 'ul']: + # this catches the edge case of a multi-item indented list whose + # first item is in a blank parent-list item: + # * * subitem1 + # * subitem2 + # see also ListIndentProcessor + lst = parent + else: + # This is a new list so create parent with appropriate tag. + lst = util.etree.SubElement(parent, self.TAG) + # Check if a custom start integer is set + if not self.parser.markdown.lazy_ol and self.STARTSWITH !='1': + lst.attrib['start'] = self.STARTSWITH + + self.parser.state.set('list') + # Loop through items in block, recursively parsing each with the + # appropriate parent. + for item in items: + if item.startswith(' '*self.tab_length): + # Item is indented. Parse with last item as parent + self.parser.parseBlocks(lst[-1], [item]) + else: + # New item. Create li and parse with it as parent + li = util.etree.SubElement(lst, 'li') + self.parser.parseBlocks(li, [item]) + self.parser.state.reset() + + def get_items(self, block): + """ Break a block into list items. """ + items = [] + for line in block.split('\n'): + m = self.CHILD_RE.match(line) + if m: + # This is a new list item + # Check first item for the start index + if not items and self.TAG=='ol': + # Detect the integer value of first list item + INTEGER_RE = re.compile('(\d+)') + self.STARTSWITH = INTEGER_RE.match(m.group(1)).group() + # Append to the list + items.append(m.group(3)) + elif self.INDENT_RE.match(line): + # This is an indented (possibly nested) item. + if items[-1].startswith(' '*self.tab_length): + # Previous item was indented. Append to that item. + items[-1] = '%s\n%s' % (items[-1], line) + else: + items.append(line) + else: + # This is another line of previous item. Append to that item. + items[-1] = '%s\n%s' % (items[-1], line) + return items + + +class UListProcessor(OListProcessor): + """ Process unordered list blocks. """ + + TAG = 'ul' + RE = re.compile(r'^[ ]{0,3}[*+-][ ]+(.*)') + + +class HashHeaderProcessor(BlockProcessor): + """ Process Hash Headers. """ + + # Detect a header at start of any line in block + RE = re.compile(r'(^|\n)(?P<level>#{1,6})(?P<header>.*?)#*(\n|$)') + + def test(self, parent, block): + return bool(self.RE.search(block)) + + def run(self, parent, blocks): + block = blocks.pop(0) + m = self.RE.search(block) + if m: + before = block[:m.start()] # All lines before header + after = block[m.end():] # All lines after header + if before: + # As the header was not the first line of the block and the + # lines before the header must be parsed first, + # recursively parse this lines as a block. + self.parser.parseBlocks(parent, [before]) + # Create header using named groups from RE + h = util.etree.SubElement(parent, 'h%d' % len(m.group('level'))) + h.text = m.group('header').strip() + if after: + # Insert remaining lines as first block for future parsing. + blocks.insert(0, after) + else: + # This should never happen, but just in case... + logger.warn("We've got a problem header: %r" % block) + + +class SetextHeaderProcessor(BlockProcessor): + """ Process Setext-style Headers. """ + + # Detect Setext-style header. Must be first 2 lines of block. + RE = re.compile(r'^.*?\n[=-]+[ ]*(\n|$)', re.MULTILINE) + + def test(self, parent, block): + return bool(self.RE.match(block)) + + def run(self, parent, blocks): + lines = blocks.pop(0).split('\n') + # Determine level. ``=`` is 1 and ``-`` is 2. + if lines[1].startswith('='): + level = 1 + else: + level = 2 + h = util.etree.SubElement(parent, 'h%d' % level) + h.text = lines[0].strip() + if len(lines) > 2: + # Block contains additional lines. Add to master blocks for later. + blocks.insert(0, '\n'.join(lines[2:])) + + +class HRProcessor(BlockProcessor): + """ Process Horizontal Rules. """ + + RE = r'^[ ]{0,3}((-+[ ]{0,2}){3,}|(_+[ ]{0,2}){3,}|(\*+[ ]{0,2}){3,})[ ]*' + # Detect hr on any line of a block. + SEARCH_RE = re.compile(RE, re.MULTILINE) + + def test(self, parent, block): + m = self.SEARCH_RE.search(block) + # No atomic grouping in python so we simulate it here for performance. + # The regex only matches what would be in the atomic group - the HR. + # Then check if we are at end of block or if next char is a newline. + if m and (m.end() == len(block) or block[m.end()] == '\n'): + # Save match object on class instance so we can use it later. + self.match = m + return True + return False + + def run(self, parent, blocks): + block = blocks.pop(0) + # Check for lines in block before hr. + prelines = block[:self.match.start()].rstrip('\n') + if prelines: + # Recursively parse lines before hr so they get parsed first. + self.parser.parseBlocks(parent, [prelines]) + # create hr + util.etree.SubElement(parent, 'hr') + # check for lines in block after hr. + postlines = block[self.match.end():].lstrip('\n') + if postlines: + # Add lines after hr to master blocks for later parsing. + blocks.insert(0, postlines) + + + +class EmptyBlockProcessor(BlockProcessor): + """ Process blocks that are empty or start with an empty line. """ + + def test(self, parent, block): + return not block or block.startswith('\n') + + def run(self, parent, blocks): + block = blocks.pop(0) + filler = '\n\n' + if block: + # Starts with empty line + # Only replace a single line. + filler = '\n' + # Save the rest for later. + theRest = block[1:] + if theRest: + # Add remaining lines to master blocks for later. + blocks.insert(0, theRest) + sibling = self.lastChild(parent) + if sibling and sibling.tag == 'pre' and len(sibling) and sibling[0].tag == 'code': + # Last block is a codeblock. Append to preserve whitespace. + sibling[0].text = util.AtomicString('%s%s' % (sibling[0].text, filler)) + + +class ParagraphProcessor(BlockProcessor): + """ Process Paragraph blocks. """ + + def test(self, parent, block): + return True + + def run(self, parent, blocks): + block = blocks.pop(0) + if block.strip(): + # Not a blank block. Add to parent, otherwise throw it away. + if self.parser.state.isstate('list'): + # The parent is a tight-list. + # + # Check for any children. This will likely only happen in a + # tight-list when a header isn't followed by a blank line. + # For example: + # + # * # Header + # Line 2 of list item - not part of header. + sibling = self.lastChild(parent) + if sibling is not None: + # Insetrt after sibling. + if sibling.tail: + sibling.tail = '%s\n%s' % (sibling.tail, block) + else: + sibling.tail = '\n%s' % block + else: + # Append to parent.text + if parent.text: + parent.text = '%s\n%s' % (parent.text, block) + else: + parent.text = block.lstrip() + else: + # Create a regular paragraph + p = util.etree.SubElement(parent, 'p') + p.text = block.lstrip() diff --git a/third_party/markdown/extensions/__init__.py b/third_party/markdown/extensions/__init__.py new file mode 100644 index 0000000..184c4d1 --- /dev/null +++ b/third_party/markdown/extensions/__init__.py @@ -0,0 +1,53 @@ +""" +Extensions +----------------------------------------------------------------------------- +""" + +from __future__ import unicode_literals + +class Extension(object): + """ Base class for extensions to subclass. """ + def __init__(self, configs = {}): + """Create an instance of an Extention. + + Keyword arguments: + + * configs: A dict of configuration setting used by an Extension. + """ + self.config = configs + + def getConfig(self, key, default=''): + """ Return a setting for the given key or an empty string. """ + if key in self.config: + return self.config[key][0] + else: + return default + + def getConfigs(self): + """ Return all configs settings as a dict. """ + return dict([(key, self.getConfig(key)) for key in self.config.keys()]) + + def getConfigInfo(self): + """ Return all config descriptions as a list of tuples. """ + return [(key, self.config[key][1]) for key in self.config.keys()] + + def setConfig(self, key, value): + """ Set a config setting for `key` with the given `value`. """ + self.config[key][0] = value + + def extendMarkdown(self, md, md_globals): + """ + Add the various proccesors and patterns to the Markdown Instance. + + This method must be overriden by every extension. + + Keyword arguments: + + * md: The Markdown instance. + + * md_globals: Global variables in the markdown module namespace. + + """ + raise NotImplementedError('Extension "%s.%s" must define an "extendMarkdown"' \ + 'method.' % (self.__class__.__module__, self.__class__.__name__)) + diff --git a/third_party/markdown/extensions/abbr.py b/third_party/markdown/extensions/abbr.py new file mode 100644 index 0000000..5e46f1d --- /dev/null +++ b/third_party/markdown/extensions/abbr.py @@ -0,0 +1,96 @@ +''' +Abbreviation Extension for Python-Markdown +========================================== + +This extension adds abbreviation handling to Python-Markdown. + +Simple Usage: + + >>> import markdown + >>> text = """ + ... Some text with an ABBR and a REF. Ignore REFERENCE and ref. + ... + ... *[ABBR]: Abbreviation + ... *[REF]: Abbreviation Reference + ... """ + >>> print markdown.markdown(text, ['abbr']) + <p>Some text with an <abbr title="Abbreviation">ABBR</abbr> and a <abbr title="Abbreviation Reference">REF</abbr>. Ignore REFERENCE and ref.</p> + +Copyright 2007-2008 +* [Waylan Limberg](http://achinghead.com/) +* [Seemant Kulleen](http://www.kulleen.org/) + + +''' + +from __future__ import absolute_import +from __future__ import unicode_literals +from . import Extension +from ..preprocessors import Preprocessor +from ..inlinepatterns import Pattern +from ..util import etree +import re + +# Global Vars +ABBR_REF_RE = re.compile(r'[*]\[(?P<abbr>[^\]]*)\][ ]?:\s*(?P<title>.*)') + +class AbbrExtension(Extension): + """ Abbreviation Extension for Python-Markdown. """ + + def extendMarkdown(self, md, md_globals): + """ Insert AbbrPreprocessor before ReferencePreprocessor. """ + md.preprocessors.add('abbr', AbbrPreprocessor(md), '<reference') + + +class AbbrPreprocessor(Preprocessor): + """ Abbreviation Preprocessor - parse text for abbr references. """ + + def run(self, lines): + ''' + Find and remove all Abbreviation references from the text. + Each reference is set as a new AbbrPattern in the markdown instance. + + ''' + new_text = [] + for line in lines: + m = ABBR_REF_RE.match(line) + if m: + abbr = m.group('abbr').strip() + title = m.group('title').strip() + self.markdown.inlinePatterns['abbr-%s'%abbr] = \ + AbbrPattern(self._generate_pattern(abbr), title) + else: + new_text.append(line) + return new_text + + def _generate_pattern(self, text): + ''' + Given a string, returns an regex pattern to match that string. + + 'HTML' -> r'(?P<abbr>[H][T][M][L])' + + Note: we force each char as a literal match (in brackets) as we don't + know what they will be beforehand. + + ''' + chars = list(text) + for i in range(len(chars)): + chars[i] = r'[%s]' % chars[i] + return r'(?P<abbr>\b%s\b)' % (r''.join(chars)) + + +class AbbrPattern(Pattern): + """ Abbreviation inline pattern. """ + + def __init__(self, pattern, title): + super(AbbrPattern, self).__init__(pattern) + self.title = title + + def handleMatch(self, m): + abbr = etree.Element('abbr') + abbr.text = m.group('abbr') + abbr.set('title', self.title) + return abbr + +def makeExtension(configs=None): + return AbbrExtension(configs=configs) diff --git a/third_party/markdown/extensions/admonition.py b/third_party/markdown/extensions/admonition.py new file mode 100644 index 0000000..9a45b92 --- /dev/null +++ b/third_party/markdown/extensions/admonition.py @@ -0,0 +1,118 @@ +""" +Admonition extension for Python-Markdown +======================================== + +Adds rST-style admonitions. Inspired by [rST][] feature with the same name. + +The syntax is (followed by an indented block with the contents): + !!! [type] [optional explicit title] + +Where `type` is used as a CSS class name of the div. If not present, `title` +defaults to the capitalized `type`, so "note" -> "Note". + +rST suggests the following `types`, but you're free to use whatever you want: + attention, caution, danger, error, hint, important, note, tip, warning + + +A simple example: + !!! note + This is the first line inside the box. + +Outputs: + <div class="admonition note"> + <p class="admonition-title">Note</p> + <p>This is the first line inside the box</p> + </div> + +You can also specify the title and CSS class of the admonition: + !!! custom "Did you know?" + Another line here. + +Outputs: + <div class="admonition custom"> + <p class="admonition-title">Did you know?</p> + <p>Another line here.</p> + </div> + +[rST]: http://docutils.sourceforge.net/docs/ref/rst/directives.html#specific-admonitions + +By [Tiago Serafim](http://www.tiagoserafim.com/). + +""" + +from __future__ import absolute_import +from __future__ import unicode_literals +from . import Extension +from ..blockprocessors import BlockProcessor +from ..util import etree +import re + + +class AdmonitionExtension(Extension): + """ Admonition extension for Python-Markdown. """ + + def extendMarkdown(self, md, md_globals): + """ Add Admonition to Markdown instance. """ + md.registerExtension(self) + + md.parser.blockprocessors.add('admonition', + AdmonitionProcessor(md.parser), + '_begin') + + +class AdmonitionProcessor(BlockProcessor): + + CLASSNAME = 'admonition' + CLASSNAME_TITLE = 'admonition-title' + RE = re.compile(r'(?:^|\n)!!!\ ?([\w\-]+)(?:\ "(.*?)")?') + + def test(self, parent, block): + sibling = self.lastChild(parent) + return self.RE.search(block) or \ + (block.startswith(' ' * self.tab_length) and sibling and \ + sibling.get('class', '').find(self.CLASSNAME) != -1) + + def run(self, parent, blocks): + sibling = self.lastChild(parent) + block = blocks.pop(0) + m = self.RE.search(block) + + if m: + block = block[m.end() + 1:] # removes the first line + + block, theRest = self.detab(block) + + if m: + klass, title = self.get_class_and_title(m) + div = etree.SubElement(parent, 'div') + div.set('class', '%s %s' % (self.CLASSNAME, klass)) + if title: + p = etree.SubElement(div, 'p') + p.text = title + p.set('class', self.CLASSNAME_TITLE) + else: + div = sibling + + self.parser.parseChunk(div, block) + + if theRest: + # This block contained unindented line(s) after the first indented + # line. Insert these lines as the first block of the master blocks + # list for future processing. + blocks.insert(0, theRest) + + def get_class_and_title(self, match): + klass, title = match.group(1).lower(), match.group(2) + if title is None: + # no title was provided, use the capitalized classname as title + # e.g.: `!!! note` will render `<p class="admonition-title">Note</p>` + title = klass.capitalize() + elif title == '': + # an explicit blank title should not be rendered + # e.g.: `!!! warning ""` will *not* render `p` with a title + title = None + return klass, title + + +def makeExtension(configs={}): + return AdmonitionExtension(configs=configs) diff --git a/third_party/markdown/extensions/attr_list.py b/third_party/markdown/extensions/attr_list.py new file mode 100644 index 0000000..c98aa85 --- /dev/null +++ b/third_party/markdown/extensions/attr_list.py @@ -0,0 +1,140 @@ +""" +Attribute List Extension for Python-Markdown +============================================ + +Adds attribute list syntax. Inspired by +[maruku](http://maruku.rubyforge.org/proposal.html#attribute_lists)'s +feature of the same name. + +Copyright 2011 [Waylan Limberg](http://achinghead.com/). + +Contact: markdown@freewisdom.org + +License: BSD (see ../LICENSE.md for details) + +Dependencies: +* [Python 2.4+](http://python.org) +* [Markdown 2.1+](http://packages.python.org/Markdown/) + +""" + +from __future__ import absolute_import +from __future__ import unicode_literals +from . import Extension +from ..treeprocessors import Treeprocessor +from ..util import isBlockLevel +import re + +try: + Scanner = re.Scanner +except AttributeError: + # must be on Python 2.4 + from sre import Scanner + +def _handle_double_quote(s, t): + k, v = t.split('=') + return k, v.strip('"') + +def _handle_single_quote(s, t): + k, v = t.split('=') + return k, v.strip("'") + +def _handle_key_value(s, t): + return t.split('=') + +def _handle_word(s, t): + if t.startswith('.'): + return '.', t[1:] + if t.startswith('#'): + return 'id', t[1:] + return t, t + +_scanner = Scanner([ + (r'[^ ]+=".*?"', _handle_double_quote), + (r"[^ ]+='.*?'", _handle_single_quote), + (r'[^ ]+=[^ ]*', _handle_key_value), + (r'[^ ]+', _handle_word), + (r' ', None) +]) + +def get_attrs(str): + """ Parse attribute list and return a list of attribute tuples. """ + return _scanner.scan(str)[0] + +def isheader(elem): + return elem.tag in ['h1', 'h2', 'h3', 'h4', 'h5', 'h6'] + +class AttrListTreeprocessor(Treeprocessor): + + BASE_RE = r'\{\:?([^\}]*)\}' + HEADER_RE = re.compile(r'[ ]*%s[ ]*$' % BASE_RE) + BLOCK_RE = re.compile(r'\n[ ]*%s[ ]*$' % BASE_RE) + INLINE_RE = re.compile(r'^%s' % BASE_RE) + NAME_RE = re.compile(r'[^A-Z_a-z\u00c0-\u00d6\u00d8-\u00f6\u00f8-\u02ff\u0370-\u037d' + r'\u037f-\u1fff\u200c-\u200d\u2070-\u218f\u2c00-\u2fef' + r'\u3001-\ud7ff\uf900-\ufdcf\ufdf0-\ufffd' + r'\:\-\.0-9\u00b7\u0300-\u036f\u203f-\u2040]+') + + def run(self, doc): + for elem in doc.getiterator(): + if isBlockLevel(elem.tag): + # Block level: check for attrs on last line of text + RE = self.BLOCK_RE + if isheader(elem): + # header: check for attrs at end of line + RE = self.HEADER_RE + if len(elem) and elem[-1].tail: + # has children. Get from tail of last child + m = RE.search(elem[-1].tail) + if m: + self.assign_attrs(elem, m.group(1)) + elem[-1].tail = elem[-1].tail[:m.start()] + if isheader(elem): + # clean up trailing #s + elem[-1].tail = elem[-1].tail.rstrip('#').rstrip() + elif elem.text: + # no children. Get from text. + m = RE.search(elem.text) + if m: + self.assign_attrs(elem, m.group(1)) + elem.text = elem.text[:m.start()] + if isheader(elem): + # clean up trailing #s + elem.text = elem.text.rstrip('#').rstrip() + else: + # inline: check for attrs at start of tail + if elem.tail: + m = self.INLINE_RE.match(elem.tail) + if m: + self.assign_attrs(elem, m.group(1)) + elem.tail = elem.tail[m.end():] + + def assign_attrs(self, elem, attrs): + """ Assign attrs to element. """ + for k, v in get_attrs(attrs): + if k == '.': + # add to class + cls = elem.get('class') + if cls: + elem.set('class', '%s %s' % (cls, v)) + else: + elem.set('class', v) + else: + # assign attr k with v + elem.set(self.sanitize_name(k), v) + + def sanitize_name(self, name): + """ + Sanitize name as 'an XML Name, minus the ":"'. + See http://www.w3.org/TR/REC-xml-names/#NT-NCName + """ + return self.NAME_RE.sub('_', name) + + +class AttrListExtension(Extension): + def extendMarkdown(self, md, md_globals): + md.treeprocessors.add('attr_list', AttrListTreeprocessor(md), '>prettify') + + +def makeExtension(configs={}): + return AttrListExtension(configs=configs) diff --git a/third_party/markdown/extensions/codehilite.py b/third_party/markdown/extensions/codehilite.py new file mode 100644 index 0000000..72b40fd --- /dev/null +++ b/third_party/markdown/extensions/codehilite.py @@ -0,0 +1,240 @@ +""" +CodeHilite Extension for Python-Markdown +======================================== + +Adds code/syntax highlighting to standard Python-Markdown code blocks. + +Copyright 2006-2008 [Waylan Limberg](http://achinghead.com/). + +Project website: <http://packages.python.org/Markdown/extensions/code_hilite.html> +Contact: markdown@freewisdom.org + +License: BSD (see ../LICENSE.md for details) + +Dependencies: +* [Python 2.3+](http://python.org/) +* [Markdown 2.0+](http://packages.python.org/Markdown/) +* [Pygments](http://pygments.org/) + +""" + +from __future__ import absolute_import +from __future__ import unicode_literals +from . import Extension +from ..treeprocessors import Treeprocessor +import warnings +try: + from pygments import highlight + from pygments.lexers import get_lexer_by_name, guess_lexer, TextLexer + from pygments.formatters import HtmlFormatter + pygments = True +except ImportError: + pygments = False + +# ------------------ The Main CodeHilite Class ---------------------- +class CodeHilite(object): + """ + Determine language of source code, and pass it into the pygments hilighter. + + Basic Usage: + >>> code = CodeHilite(src = 'some text') + >>> html = code.hilite() + + * src: Source string or any object with a .readline attribute. + + * linenums: (Boolean) Set line numbering to 'on' (True), 'off' (False) or 'auto'(None). + Set to 'auto' by default. + + * guess_lang: (Boolean) Turn language auto-detection 'on' or 'off' (on by default). + + * css_class: Set class name of wrapper div ('codehilite' by default). + + Low Level Usage: + >>> code = CodeHilite() + >>> code.src = 'some text' # String or anything with a .readline attr. + >>> code.linenos = True # True or False; Turns line numbering on or of. + >>> html = code.hilite() + + """ + + def __init__(self, src=None, linenums=None, guess_lang=True, + css_class="codehilite", lang=None, style='default', + noclasses=False, tab_length=4): + self.src = src + self.lang = lang + self.linenums = linenums + self.guess_lang = guess_lang + self.css_class = css_class + self.style = style + self.noclasses = noclasses + self.tab_length = tab_length + + def hilite(self): + """ + Pass code to the [Pygments](http://pygments.pocoo.org/) highliter with + optional line numbers. The output should then be styled with css to + your liking. No styles are applied by default - only styling hooks + (i.e.: <span class="k">). + + returns : A string of html. + + """ + + self.src = self.src.strip('\n') + + if self.lang is None: + self._getLang() + + if pygments: + try: + lexer = get_lexer_by_name(self.lang) + except ValueError: + try: + if self.guess_lang: + lexer = guess_lexer(self.src) + else: + lexer = TextLexer() + except ValueError: + lexer = TextLexer() + formatter = HtmlFormatter(linenos=self.linenums, + cssclass=self.css_class, + style=self.style, + noclasses=self.noclasses) + return highlight(self.src, lexer, formatter) + else: + # just escape and build markup usable by JS highlighting libs + txt = self.src.replace('&', '&') + txt = txt.replace('<', '<') + txt = txt.replace('>', '>') + txt = txt.replace('"', '"') + classes = [] + if self.lang: + classes.append('language-%s' % self.lang) + if self.linenums: + classes.append('linenums') + class_str = '' + if classes: + class_str = ' class="%s"' % ' '.join(classes) + return '<pre class="%s"><code%s>%s</code></pre>\n'% \ + (self.css_class, class_str, txt) + + def _getLang(self): + """ + Determines language of a code block from shebang line and whether said + line should be removed or left in place. If the sheband line contains a + path (even a single /) then it is assumed to be a real shebang line and + left alone. However, if no path is given (e.i.: #!python or :::python) + then it is assumed to be a mock shebang for language identifitation of a + code fragment and removed from the code block prior to processing for + code highlighting. When a mock shebang (e.i: #!python) is found, line + numbering is turned on. When colons are found in place of a shebang + (e.i.: :::python), line numbering is left in the current state - off + by default. + + """ + + import re + + #split text into lines + lines = self.src.split("\n") + #pull first line to examine + fl = lines.pop(0) + + c = re.compile(r''' + (?:(?:^::+)|(?P<shebang>^[#]!)) # Shebang or 2 or more colons. + (?P<path>(?:/\w+)*[/ ])? # Zero or 1 path + (?P<lang>[\w+-]*) # The language + ''', re.VERBOSE) + # search first line for shebang + m = c.search(fl) + if m: + # we have a match + try: + self.lang = m.group('lang').lower() + except IndexError: + self.lang = None + if m.group('path'): + # path exists - restore first line + lines.insert(0, fl) + if self.linenums is None and m.group('shebang'): + # Overridable and Shebang exists - use line numbers + self.linenums = True + else: + # No match + lines.insert(0, fl) + + self.src = "\n".join(lines).strip("\n") + + + +# ------------------ The Markdown Extension ------------------------------- +class HiliteTreeprocessor(Treeprocessor): + """ Hilight source code in code blocks. """ + + def run(self, root): + """ Find code blocks and store in htmlStash. """ + blocks = root.getiterator('pre') + for block in blocks: + children = block.getchildren() + if len(children) == 1 and children[0].tag == 'code': + code = CodeHilite(children[0].text, + linenums=self.config['linenums'], + guess_lang=self.config['guess_lang'], + css_class=self.config['css_class'], + style=self.config['pygments_style'], + noclasses=self.config['noclasses'], + tab_length=self.markdown.tab_length) + placeholder = self.markdown.htmlStash.store(code.hilite(), + safe=True) + # Clear codeblock in etree instance + block.clear() + # Change to p element which will later + # be removed when inserting raw html + block.tag = 'p' + block.text = placeholder + + +class CodeHiliteExtension(Extension): + """ Add source code hilighting to markdown codeblocks. """ + + def __init__(self, configs): + # define default configs + self.config = { + 'linenums': [None, "Use lines numbers. True=yes, False=no, None=auto"], + 'force_linenos' : [False, "Depreciated! Use 'linenums' instead. Force line numbers - Default: False"], + 'guess_lang' : [True, "Automatic language detection - Default: True"], + 'css_class' : ["codehilite", + "Set class name for wrapper <div> - Default: codehilite"], + 'pygments_style' : ['default', 'Pygments HTML Formatter Style (Colorscheme) - Default: default'], + 'noclasses': [False, 'Use inline styles instead of CSS classes - Default false'] + } + + # Override defaults with user settings + for key, value in configs: + # convert strings to booleans + if value == 'True': value = True + if value == 'False': value = False + if value == 'None': value = None + + if key == 'force_linenos': + warnings.warn('The "force_linenos" config setting' + ' to the CodeHilite extension is deprecrecated.' + ' Use "linenums" instead.', PendingDeprecationWarning) + if value: + # Carry 'force_linenos' over to new 'linenos'. + self.setConfig('linenums', True) + + self.setConfig(key, value) + + def extendMarkdown(self, md, md_globals): + """ Add HilitePostprocessor to Markdown instance. """ + hiliter = HiliteTreeprocessor(md) + hiliter.config = self.getConfigs() + md.treeprocessors.add("hilite", hiliter, "<inline") + + md.registerExtension(self) + + +def makeExtension(configs={}): + return CodeHiliteExtension(configs=configs) + diff --git a/third_party/markdown/extensions/def_list.py b/third_party/markdown/extensions/def_list.py new file mode 100644 index 0000000..8684652 --- /dev/null +++ b/third_party/markdown/extensions/def_list.py @@ -0,0 +1,118 @@ +""" +Definition List Extension for Python-Markdown +============================================= + +Added parsing of Definition Lists to Python-Markdown. + +A simple example: + + Apple + : Pomaceous fruit of plants of the genus Malus in + the family Rosaceae. + : An american computer company. + + Orange + : The fruit of an evergreen tree of the genus Citrus. + +Copyright 2008 - [Waylan Limberg](http://achinghead.com) + +""" + +from __future__ import absolute_import +from __future__ import unicode_literals +from . import Extension +from ..blockprocessors import BlockProcessor, ListIndentProcessor +from ..util import etree +import re + + +class DefListProcessor(BlockProcessor): + """ Process Definition Lists. """ + + RE = re.compile(r'(^|\n)[ ]{0,3}:[ ]{1,3}(.*?)(\n|$)') + NO_INDENT_RE = re.compile(r'^[ ]{0,3}[^ :]') + + def test(self, parent, block): + return bool(self.RE.search(block)) + + def run(self, parent, blocks): + + raw_block = blocks.pop(0) + m = self.RE.search(raw_block) + terms = [l.strip() for l in raw_block[:m.start()].split('\n') if l.strip()] + block = raw_block[m.end():] + no_indent = self.NO_INDENT_RE.match(block) + if no_indent: + d, theRest = (block, None) + else: + d, theRest = self.detab(block) + if d: + d = '%s\n%s' % (m.group(2), d) + else: + d = m.group(2) + sibling = self.lastChild(parent) + if not terms and sibling is None: + # This is not a definition item. Most likely a paragraph that + # starts with a colon at the begining of a document or list. + blocks.insert(0, raw_block) + return False + if not terms and sibling.tag == 'p': + # The previous paragraph contains the terms + state = 'looselist' + terms = sibling.text.split('\n') + parent.remove(sibling) + # Aquire new sibling + sibling = self.lastChild(parent) + else: + state = 'list' + + if sibling and sibling.tag == 'dl': + # This is another item on an existing list + dl = sibling + if len(dl) and dl[-1].tag == 'dd' and len(dl[-1]): + state = 'looselist' + else: + # This is a new list + dl = etree.SubElement(parent, 'dl') + # Add terms + for term in terms: + dt = etree.SubElement(dl, 'dt') + dt.text = term + # Add definition + self.parser.state.set(state) + dd = etree.SubElement(dl, 'dd') + self.parser.parseBlocks(dd, [d]) + self.parser.state.reset() + + if theRest: + blocks.insert(0, theRest) + +class DefListIndentProcessor(ListIndentProcessor): + """ Process indented children of definition list items. """ + + ITEM_TYPES = ['dd'] + LIST_TYPES = ['dl'] + + def create_item(self, parent, block): + """ Create a new dd and parse the block with it as the parent. """ + dd = etree.SubElement(parent, 'dd') + self.parser.parseBlocks(dd, [block]) + + + +class DefListExtension(Extension): + """ Add definition lists to Markdown. """ + + def extendMarkdown(self, md, md_globals): + """ Add an instance of DefListProcessor to BlockParser. """ + md.parser.blockprocessors.add('defindent', + DefListIndentProcessor(md.parser), + '>indent') + md.parser.blockprocessors.add('deflist', + DefListProcessor(md.parser), + '>ulist') + + +def makeExtension(configs={}): + return DefListExtension(configs=configs) + diff --git a/third_party/markdown/extensions/extra.py b/third_party/markdown/extensions/extra.py new file mode 100644 index 0000000..e6a1e82 --- /dev/null +++ b/third_party/markdown/extensions/extra.py @@ -0,0 +1,54 @@ +""" +Python-Markdown Extra Extension +=============================== + +A compilation of various Python-Markdown extensions that imitates +[PHP Markdown Extra](http://michelf.com/projects/php-markdown/extra/). + +Note that each of the individual extensions still need to be available +on your PYTHONPATH. This extension simply wraps them all up as a +convenience so that only one extension needs to be listed when +initiating Markdown. See the documentation for each individual +extension for specifics about that extension. + +In the event that one or more of the supported extensions are not +available for import, Markdown will issue a warning and simply continue +without that extension. + +There may be additional extensions that are distributed with +Python-Markdown that are not included here in Extra. Those extensions +are not part of PHP Markdown Extra, and therefore, not part of +Python-Markdown Extra. If you really would like Extra to include +additional extensions, we suggest creating your own clone of Extra +under a differant name. You could also edit the `extensions` global +variable defined below, but be aware that such changes may be lost +when you upgrade to any future version of Python-Markdown. + +""" + +from __future__ import absolute_import +from __future__ import unicode_literals +from . import Extension + +extensions = ['smart_strong', + 'fenced_code', + 'footnotes', + 'attr_list', + 'def_list', + 'tables', + 'abbr', + ] + + +class ExtraExtension(Extension): + """ Add various extensions to Markdown class.""" + + def extendMarkdown(self, md, md_globals): + """ Register extension instances. """ + md.registerExtensions(extensions, self.config) + if not md.safeMode: + # Turn on processing of markdown text within raw html + md.preprocessors['html_block'].markdown_in_raw = True + +def makeExtension(configs={}): + return ExtraExtension(configs=dict(configs)) diff --git a/third_party/markdown/extensions/fenced_code.py b/third_party/markdown/extensions/fenced_code.py new file mode 100644 index 0000000..ecdb20d --- /dev/null +++ b/third_party/markdown/extensions/fenced_code.py @@ -0,0 +1,161 @@ +""" +Fenced Code Extension for Python Markdown +========================================= + +This extension adds Fenced Code Blocks to Python-Markdown. + + >>> import markdown + >>> text = ''' + ... A paragraph before a fenced code block: + ... + ... ~~~ + ... Fenced code block + ... ~~~ + ... ''' + >>> html = markdown.markdown(text, extensions=['fenced_code']) + >>> print html + <p>A paragraph before a fenced code block:</p> + <pre><code>Fenced code block + </code></pre> + +Works with safe_mode also (we check this because we are using the HtmlStash): + + >>> print markdown.markdown(text, extensions=['fenced_code'], safe_mode='replace') + <p>A paragraph before a fenced code block:</p> + <pre><code>Fenced code block + </code></pre> + +Include tilde's in a code block and wrap with blank lines: + + >>> text = ''' + ... ~~~~~~~~ + ... + ... ~~~~ + ... ~~~~~~~~''' + >>> print markdown.markdown(text, extensions=['fenced_code']) + <pre><code> + ~~~~ + </code></pre> + +Language tags: + + >>> text = ''' + ... ~~~~{.python} + ... # Some python code + ... ~~~~''' + >>> print markdown.markdown(text, extensions=['fenced_code']) + <pre><code class="python"># Some python code + </code></pre> + +Optionally backticks instead of tildes as per how github's code block markdown is identified: + + >>> text = ''' + ... ````` + ... # Arbitrary code + ... ~~~~~ # these tildes will not close the block + ... `````''' + >>> print markdown.markdown(text, extensions=['fenced_code']) + <pre><code># Arbitrary code + ~~~~~ # these tildes will not close the block + </code></pre> + +Copyright 2007-2008 [Waylan Limberg](http://achinghead.com/). + +Project website: <http://packages.python.org/Markdown/extensions/fenced_code_blocks.html> +Contact: markdown@freewisdom.org + +License: BSD (see ../docs/LICENSE for details) + +Dependencies: +* [Python 2.4+](http://python.org) +* [Markdown 2.0+](http://packages.python.org/Markdown/) +* [Pygments (optional)](http://pygments.org) + +""" + +from __future__ import absolute_import +from __future__ import unicode_literals +from . import Extension +from ..preprocessors import Preprocessor +from .codehilite import CodeHilite, CodeHiliteExtension +import re + +# Global vars +FENCED_BLOCK_RE = re.compile( \ + r'(?P<fence>^(?:~{3,}|`{3,}))[ ]*(\{?\.?(?P<lang>[a-zA-Z0-9_+-]*)\}?)?[ ]*\n(?P<code>.*?)(?<=\n)(?P=fence)[ ]*$', + re.MULTILINE|re.DOTALL + ) +CODE_WRAP = '<pre><code%s>%s</code></pre>' +LANG_TAG = ' class="%s"' + +class FencedCodeExtension(Extension): + + def extendMarkdown(self, md, md_globals): + """ Add FencedBlockPreprocessor to the Markdown instance. """ + md.registerExtension(self) + + md.preprocessors.add('fenced_code_block', + FencedBlockPreprocessor(md), + ">normalize_whitespace") + + +class FencedBlockPreprocessor(Preprocessor): + + def __init__(self, md): + super(FencedBlockPreprocessor, self).__init__(md) + + self.checked_for_codehilite = False + self.codehilite_conf = {} + + def run(self, lines): + """ Match and store Fenced Code Blocks in the HtmlStash. """ + + # Check for code hilite extension + if not self.checked_for_codehilite: + for ext in self.markdown.registeredExtensions: + if isinstance(ext, CodeHiliteExtension): + self.codehilite_conf = ext.config + break + + self.checked_for_codehilite = True + + text = "\n".join(lines) + while 1: + m = FENCED_BLOCK_RE.search(text) + if m: + lang = '' + if m.group('lang'): + lang = LANG_TAG % m.group('lang') + + # If config is not empty, then the codehighlite extension + # is enabled, so we call it to highlite the code + if self.codehilite_conf: + highliter = CodeHilite(m.group('code'), + linenums=self.codehilite_conf['linenums'][0], + guess_lang=self.codehilite_conf['guess_lang'][0], + css_class=self.codehilite_conf['css_class'][0], + style=self.codehilite_conf['pygments_style'][0], + lang=(m.group('lang') or None), + noclasses=self.codehilite_conf['noclasses'][0]) + + code = highliter.hilite() + else: + code = CODE_WRAP % (lang, self._escape(m.group('code'))) + + placeholder = self.markdown.htmlStash.store(code, safe=True) + text = '%s\n%s\n%s'% (text[:m.start()], placeholder, text[m.end():]) + else: + break + return text.split("\n") + + def _escape(self, txt): + """ basic html escaping """ + txt = txt.replace('&', '&') + txt = txt.replace('<', '<') + txt = txt.replace('>', '>') + txt = txt.replace('"', '"') + return txt + + +def makeExtension(configs=None): + return FencedCodeExtension(configs=configs) diff --git a/third_party/markdown/extensions/footnotes.py b/third_party/markdown/extensions/footnotes.py new file mode 100644 index 0000000..65ed597 --- /dev/null +++ b/third_party/markdown/extensions/footnotes.py @@ -0,0 +1,313 @@ +""" +========================= FOOTNOTES ================================= + +This section adds footnote handling to markdown. It can be used as +an example for extending python-markdown with relatively complex +functionality. While in this case the extension is included inside +the module itself, it could just as easily be added from outside the +module. Not that all markdown classes above are ignorant about +footnotes. All footnote functionality is provided separately and +then added to the markdown instance at the run time. + +Footnote functionality is attached by calling extendMarkdown() +method of FootnoteExtension. The method also registers the +extension to allow it's state to be reset by a call to reset() +method. + +Example: + Footnotes[^1] have a label[^label] and a definition[^!DEF]. + + [^1]: This is a footnote + [^label]: A footnote on "label" + [^!DEF]: The footnote for definition + +""" + +from __future__ import absolute_import +from __future__ import unicode_literals +from . import Extension +from ..preprocessors import Preprocessor +from ..inlinepatterns import Pattern +from ..treeprocessors import Treeprocessor +from ..postprocessors import Postprocessor +from ..util import etree, text_type +from ..odict import OrderedDict +import re + +FN_BACKLINK_TEXT = "zz1337820767766393qq" +NBSP_PLACEHOLDER = "qq3936677670287331zz" +DEF_RE = re.compile(r'[ ]{0,3}\[\^([^\]]*)\]:\s*(.*)') +TABBED_RE = re.compile(r'((\t)|( ))(.*)') + +class FootnoteExtension(Extension): + """ Footnote Extension. """ + + def __init__ (self, configs): + """ Setup configs. """ + self.config = {'PLACE_MARKER': + ["///Footnotes Go Here///", + "The text string that marks where the footnotes go"], + 'UNIQUE_IDS': + [False, + "Avoid name collisions across " + "multiple calls to reset()."], + "BACKLINK_TEXT": + ["↩", + "The text string that links from the footnote to the reader's place."] + } + + for key, value in configs: + self.config[key][0] = value + + # In multiple invocations, emit links that don't get tangled. + self.unique_prefix = 0 + + self.reset() + + def extendMarkdown(self, md, md_globals): + """ Add pieces to Markdown. """ + md.registerExtension(self) + self.parser = md.parser + self.md = md + self.sep = ':' + if self.md.output_format in ['html5', 'xhtml5']: + self.sep = '-' + # Insert a preprocessor before ReferencePreprocessor + md.preprocessors.add("footnote", FootnotePreprocessor(self), + "<reference") + # Insert an inline pattern before ImageReferencePattern + FOOTNOTE_RE = r'\[\^([^\]]*)\]' # blah blah [^1] blah + md.inlinePatterns.add("footnote", FootnotePattern(FOOTNOTE_RE, self), + "<reference") + # Insert a tree-processor that would actually add the footnote div + # This must be before all other treeprocessors (i.e., inline and + # codehilite) so they can run on the the contents of the div. + md.treeprocessors.add("footnote", FootnoteTreeprocessor(self), + "_begin") + # Insert a postprocessor after amp_substitute oricessor + md.postprocessors.add("footnote", FootnotePostprocessor(self), + ">amp_substitute") + + def reset(self): + """ Clear the footnotes on reset, and prepare for a distinct document. """ + self.footnotes = OrderedDict() + self.unique_prefix += 1 + + def findFootnotesPlaceholder(self, root): + """ Return ElementTree Element that contains Footnote placeholder. """ + def finder(element): + for child in element: + if child.text: + if child.text.find(self.getConfig("PLACE_MARKER")) > -1: + return child, element, True + if child.tail: + if child.tail.find(self.getConfig("PLACE_MARKER")) > -1: + return child, element, False + finder(child) + return None + + res = finder(root) + return res + + def setFootnote(self, id, text): + """ Store a footnote for later retrieval. """ + self.footnotes[id] = text + + def makeFootnoteId(self, id): + """ Return footnote link id. """ + if self.getConfig("UNIQUE_IDS"): + return 'fn%s%d-%s' % (self.sep, self.unique_prefix, id) + else: + return 'fn%s%s' % (self.sep, id) + + def makeFootnoteRefId(self, id): + """ Return footnote back-link id. """ + if self.getConfig("UNIQUE_IDS"): + return 'fnref%s%d-%s' % (self.sep, self.unique_prefix, id) + else: + return 'fnref%s%s' % (self.sep, id) + + def makeFootnotesDiv(self, root): + """ Return div of footnotes as et Element. """ + + if not list(self.footnotes.keys()): + return None + + div = etree.Element("div") + div.set('class', 'footnote') + etree.SubElement(div, "hr") + ol = etree.SubElement(div, "ol") + + for id in self.footnotes.keys(): + li = etree.SubElement(ol, "li") + li.set("id", self.makeFootnoteId(id)) + self.parser.parseChunk(li, self.footnotes[id]) + backlink = etree.Element("a") + backlink.set("href", "#" + self.makeFootnoteRefId(id)) + if self.md.output_format not in ['html5', 'xhtml5']: + backlink.set("rev", "footnote") # Invalid in HTML5 + backlink.set("class", "footnote-backref") + backlink.set("title", "Jump back to footnote %d in the text" % \ + (self.footnotes.index(id)+1)) + backlink.text = FN_BACKLINK_TEXT + + if li.getchildren(): + node = li[-1] + if node.tag == "p": + node.text = node.text + NBSP_PLACEHOLDER + node.append(backlink) + else: + p = etree.SubElement(li, "p") + p.append(backlink) + return div + + +class FootnotePreprocessor(Preprocessor): + """ Find all footnote references and store for later use. """ + + def __init__ (self, footnotes): + self.footnotes = footnotes + + def run(self, lines): + """ + Loop through lines and find, set, and remove footnote definitions. + + Keywords: + + * lines: A list of lines of text + + Return: A list of lines of text with footnote definitions removed. + + """ + newlines = [] + i = 0 + while True: + m = DEF_RE.match(lines[i]) + if m: + fn, _i = self.detectTabbed(lines[i+1:]) + fn.insert(0, m.group(2)) + i += _i-1 # skip past footnote + self.footnotes.setFootnote(m.group(1), "\n".join(fn)) + else: + newlines.append(lines[i]) + if len(lines) > i+1: + i += 1 + else: + break + return newlines + + def detectTabbed(self, lines): + """ Find indented text and remove indent before further proccesing. + + Keyword arguments: + + * lines: an array of strings + + Returns: a list of post processed items and the index of last line. + + """ + items = [] + blank_line = False # have we encountered a blank line yet? + i = 0 # to keep track of where we are + + def detab(line): + match = TABBED_RE.match(line) + if match: + return match.group(4) + + for line in lines: + if line.strip(): # Non-blank line + detabbed_line = detab(line) + if detabbed_line: + items.append(detabbed_line) + i += 1 + continue + elif not blank_line and not DEF_RE.match(line): + # not tabbed but still part of first par. + items.append(line) + i += 1 + continue + else: + return items, i+1 + + else: # Blank line: _maybe_ we are done. + blank_line = True + i += 1 # advance + + # Find the next non-blank line + for j in range(i, len(lines)): + if lines[j].strip(): + next_line = lines[j]; break + else: + break # There is no more text; we are done. + + # Check if the next non-blank line is tabbed + if detab(next_line): # Yes, more work to do. + items.append("") + continue + else: + break # No, we are done. + else: + i += 1 + + return items, i + + +class FootnotePattern(Pattern): + """ InlinePattern for footnote markers in a document's body text. """ + + def __init__(self, pattern, footnotes): + super(FootnotePattern, self).__init__(pattern) + self.footnotes = footnotes + + def handleMatch(self, m): + id = m.group(2) + if id in self.footnotes.footnotes.keys(): + sup = etree.Element("sup") + a = etree.SubElement(sup, "a") + sup.set('id', self.footnotes.makeFootnoteRefId(id)) + a.set('href', '#' + self.footnotes.makeFootnoteId(id)) + if self.footnotes.md.output_format not in ['html5', 'xhtml5']: + a.set('rel', 'footnote') # invalid in HTML5 + a.set('class', 'footnote-ref') + a.text = text_type(self.footnotes.footnotes.index(id) + 1) + return sup + else: + return None + + +class FootnoteTreeprocessor(Treeprocessor): + """ Build and append footnote div to end of document. """ + + def __init__ (self, footnotes): + self.footnotes = footnotes + + def run(self, root): + footnotesDiv = self.footnotes.makeFootnotesDiv(root) + if footnotesDiv: + result = self.footnotes.findFootnotesPlaceholder(root) + if result: + child, parent, isText = result + ind = parent.getchildren().index(child) + if isText: + parent.remove(child) + parent.insert(ind, footnotesDiv) + else: + parent.insert(ind + 1, footnotesDiv) + child.tail = None + else: + root.append(footnotesDiv) + +class FootnotePostprocessor(Postprocessor): + """ Replace placeholders with html entities. """ + def __init__(self, footnotes): + self.footnotes = footnotes + + def run(self, text): + text = text.replace(FN_BACKLINK_TEXT, self.footnotes.getConfig("BACKLINK_TEXT")) + return text.replace(NBSP_PLACEHOLDER, " ") + +def makeExtension(configs=[]): + """ Return an instance of the FootnoteExtension """ + return FootnoteExtension(configs=configs) + diff --git a/third_party/markdown/extensions/headerid.py b/third_party/markdown/extensions/headerid.py new file mode 100644 index 0000000..7681b8d --- /dev/null +++ b/third_party/markdown/extensions/headerid.py @@ -0,0 +1,199 @@ +""" +HeaderID Extension for Python-Markdown +====================================== + +Auto-generate id attributes for HTML headers. + +Basic usage: + + >>> import markdown + >>> text = "# Some Header #" + >>> md = markdown.markdown(text, ['headerid']) + >>> print md + <h1 id="some-header">Some Header</h1> + +All header IDs are unique: + + >>> text = ''' + ... #Header + ... #Header + ... #Header''' + >>> md = markdown.markdown(text, ['headerid']) + >>> print md + <h1 id="header">Header</h1> + <h1 id="header_1">Header</h1> + <h1 id="header_2">Header</h1> + +To fit within a html template's hierarchy, set the header base level: + + >>> text = ''' + ... #Some Header + ... ## Next Level''' + >>> md = markdown.markdown(text, ['headerid(level=3)']) + >>> print md + <h3 id="some-header">Some Header</h3> + <h4 id="next-level">Next Level</h4> + +Works with inline markup. + + >>> text = '#Some *Header* with [markup](http://example.com).' + >>> md = markdown.markdown(text, ['headerid']) + >>> print md + <h1 id="some-header-with-markup">Some <em>Header</em> with <a href="http://example.com">markup</a>.</h1> + +Turn off auto generated IDs: + + >>> text = ''' + ... # Some Header + ... # Another Header''' + >>> md = markdown.markdown(text, ['headerid(forceid=False)']) + >>> print md + <h1>Some Header</h1> + <h1>Another Header</h1> + +Use with MetaData extension: + + >>> text = '''header_level: 2 + ... header_forceid: Off + ... + ... # A Header''' + >>> md = markdown.markdown(text, ['headerid', 'meta']) + >>> print md + <h2>A Header</h2> + +Copyright 2007-2011 [Waylan Limberg](http://achinghead.com/). + +Project website: <http://packages.python.org/Markdown/extensions/header_id.html> +Contact: markdown@freewisdom.org + +License: BSD (see ../docs/LICENSE for details) + +Dependencies: +* [Python 2.3+](http://python.org) +* [Markdown 2.0+](http://packages.python.org/Markdown/) + +""" + +from __future__ import absolute_import +from __future__ import unicode_literals +from . import Extension +from ..treeprocessors import Treeprocessor +import re +import logging +import unicodedata + +logger = logging.getLogger('MARKDOWN') + +IDCOUNT_RE = re.compile(r'^(.*)_([0-9]+)$') + + +def slugify(value, separator): + """ Slugify a string, to make it URL friendly. """ + value = unicodedata.normalize('NFKD', value).encode('ascii', 'ignore') + value = re.sub('[^\w\s-]', '', value.decode('ascii')).strip().lower() + return re.sub('[%s\s]+' % separator, separator, value) + + +def unique(id, ids): + """ Ensure id is unique in set of ids. Append '_1', '_2'... if not """ + while id in ids or not id: + m = IDCOUNT_RE.match(id) + if m: + id = '%s_%d'% (m.group(1), int(m.group(2))+1) + else: + id = '%s_%d'% (id, 1) + ids.add(id) + return id + + +def itertext(elem): + """ Loop through all children and return text only. + + Reimplements method of same name added to ElementTree in Python 2.7 + + """ + if elem.text: + yield elem.text + for e in elem: + for s in itertext(e): + yield s + if e.tail: + yield e.tail + + +class HeaderIdTreeprocessor(Treeprocessor): + """ Assign IDs to headers. """ + + IDs = set() + + def run(self, doc): + start_level, force_id = self._get_meta() + slugify = self.config['slugify'] + sep = self.config['separator'] + for elem in doc.getiterator(): + if elem.tag in ['h1', 'h2', 'h3', 'h4', 'h5', 'h6']: + if force_id: + if "id" in elem.attrib: + id = elem.get('id') + else: + id = slugify(''.join(itertext(elem)), sep) + elem.set('id', unique(id, self.IDs)) + if start_level: + level = int(elem.tag[-1]) + start_level + if level > 6: + level = 6 + elem.tag = 'h%d' % level + + + def _get_meta(self): + """ Return meta data suported by this ext as a tuple """ + level = int(self.config['level']) - 1 + force = self._str2bool(self.config['forceid']) + if hasattr(self.md, 'Meta'): + if 'header_level' in self.md.Meta: + level = int(self.md.Meta['header_level'][0]) - 1 + if 'header_forceid' in self.md.Meta: + force = self._str2bool(self.md.Meta['header_forceid'][0]) + return level, force + + def _str2bool(self, s, default=False): + """ Convert a string to a booleen value. """ + s = str(s) + if s.lower() in ['0', 'f', 'false', 'off', 'no', 'n']: + return False + elif s.lower() in ['1', 't', 'true', 'on', 'yes', 'y']: + return True + return default + + +class HeaderIdExtension(Extension): + def __init__(self, configs): + # set defaults + self.config = { + 'level' : ['1', 'Base level for headers.'], + 'forceid' : ['True', 'Force all headers to have an id.'], + 'separator' : ['-', 'Word separator.'], + 'slugify' : [slugify, 'Callable to generate anchors'], + } + + for key, value in configs: + self.setConfig(key, value) + + def extendMarkdown(self, md, md_globals): + md.registerExtension(self) + self.processor = HeaderIdTreeprocessor() + self.processor.md = md + self.processor.config = self.getConfigs() + if 'attr_list' in md.treeprocessors.keys(): + # insert after attr_list treeprocessor + md.treeprocessors.add('headerid', self.processor, '>attr_list') + else: + # insert after 'prettify' treeprocessor. + md.treeprocessors.add('headerid', self.processor, '>prettify') + + def reset(self): + self.processor.IDs = set() + + +def makeExtension(configs=None): + return HeaderIdExtension(configs=configs) diff --git a/third_party/markdown/extensions/meta.py b/third_party/markdown/extensions/meta.py new file mode 100644 index 0000000..aaff436 --- /dev/null +++ b/third_party/markdown/extensions/meta.py @@ -0,0 +1,93 @@ +""" +Meta Data Extension for Python-Markdown +======================================= + +This extension adds Meta Data handling to markdown. + +Basic Usage: + + >>> import markdown + >>> text = '''Title: A Test Doc. + ... Author: Waylan Limberg + ... John Doe + ... Blank_Data: + ... + ... The body. This is paragraph one. + ... ''' + >>> md = markdown.Markdown(['meta']) + >>> print md.convert(text) + <p>The body. This is paragraph one.</p> + >>> print md.Meta + {u'blank_data': [u''], u'author': [u'Waylan Limberg', u'John Doe'], u'title': [u'A Test Doc.']} + +Make sure text without Meta Data still works (markdown < 1.6b returns a <p>). + + >>> text = ' Some Code - not extra lines of meta data.' + >>> md = markdown.Markdown(['meta']) + >>> print md.convert(text) + <pre><code>Some Code - not extra lines of meta data. + </code></pre> + >>> md.Meta + {} + +Copyright 2007-2008 [Waylan Limberg](http://achinghead.com). + +Project website: <http://packages.python.org/Markdown/meta_data.html> +Contact: markdown@freewisdom.org + +License: BSD (see ../LICENSE.md for details) + +""" + +from __future__ import absolute_import +from __future__ import unicode_literals +from . import Extension +from ..preprocessors import Preprocessor +import re + +# Global Vars +META_RE = re.compile(r'^[ ]{0,3}(?P<key>[A-Za-z0-9_-]+):\s*(?P<value>.*)') +META_MORE_RE = re.compile(r'^[ ]{4,}(?P<value>.*)') + +class MetaExtension (Extension): + """ Meta-Data extension for Python-Markdown. """ + + def extendMarkdown(self, md, md_globals): + """ Add MetaPreprocessor to Markdown instance. """ + + md.preprocessors.add("meta", MetaPreprocessor(md), "_begin") + + +class MetaPreprocessor(Preprocessor): + """ Get Meta-Data. """ + + def run(self, lines): + """ Parse Meta-Data and store in Markdown.Meta. """ + meta = {} + key = None + while 1: + line = lines.pop(0) + if line.strip() == '': + break # blank line - done + m1 = META_RE.match(line) + if m1: + key = m1.group('key').lower().strip() + value = m1.group('value').strip() + try: + meta[key].append(value) + except KeyError: + meta[key] = [value] + else: + m2 = META_MORE_RE.match(line) + if m2 and key: + # Add another line to existing key + meta[key].append(m2.group('value').strip()) + else: + lines.insert(0, line) + break # no meta data - done + self.markdown.Meta = meta + return lines + + +def makeExtension(configs={}): + return MetaExtension(configs=configs) diff --git a/third_party/markdown/extensions/nl2br.py b/third_party/markdown/extensions/nl2br.py new file mode 100644 index 0000000..da4b339 --- /dev/null +++ b/third_party/markdown/extensions/nl2br.py @@ -0,0 +1,38 @@ +""" +NL2BR Extension +=============== + +A Python-Markdown extension to treat newlines as hard breaks; like +GitHub-flavored Markdown does. + +Usage: + + >>> import markdown + >>> print markdown.markdown('line 1\\nline 2', extensions=['nl2br']) + <p>line 1<br /> + line 2</p> + +Copyright 2011 [Brian Neal](http://deathofagremmie.com/) + +Dependencies: +* [Python 2.4+](http://python.org) +* [Markdown 2.1+](http://packages.python.org/Markdown/) + +""" + +from __future__ import absolute_import +from __future__ import unicode_literals +from . import Extension +from ..inlinepatterns import SubstituteTagPattern + +BR_RE = r'\n' + +class Nl2BrExtension(Extension): + + def extendMarkdown(self, md, md_globals): + br_tag = SubstituteTagPattern(BR_RE, 'br') + md.inlinePatterns.add('nl', br_tag, '_end') + + +def makeExtension(configs=None): + return Nl2BrExtension(configs) diff --git a/third_party/markdown/extensions/sane_lists.py b/third_party/markdown/extensions/sane_lists.py new file mode 100644 index 0000000..23e9a7f --- /dev/null +++ b/third_party/markdown/extensions/sane_lists.py @@ -0,0 +1,51 @@ +""" +Sane List Extension for Python-Markdown +======================================= + +Modify the behavior of Lists in Python-Markdown t act in a sane manor. + +In standard Markdown sytex, the following would constitute a single +ordered list. However, with this extension, the output would include +two lists, the first an ordered list and the second and unordered list. + + 1. ordered + 2. list + + * unordered + * list + +Copyright 2011 - [Waylan Limberg](http://achinghead.com) + +""" + +from __future__ import absolute_import +from __future__ import unicode_literals +from . import Extension +from ..blockprocessors import OListProcessor, UListProcessor +import re + + +class SaneOListProcessor(OListProcessor): + + CHILD_RE = re.compile(r'^[ ]{0,3}((\d+\.))[ ]+(.*)') + SIBLING_TAGS = ['ol'] + + +class SaneUListProcessor(UListProcessor): + + CHILD_RE = re.compile(r'^[ ]{0,3}(([*+-]))[ ]+(.*)') + SIBLING_TAGS = ['ul'] + + +class SaneListExtension(Extension): + """ Add sane lists to Markdown. """ + + def extendMarkdown(self, md, md_globals): + """ Override existing Processors. """ + md.parser.blockprocessors['olist'] = SaneOListProcessor(md.parser) + md.parser.blockprocessors['ulist'] = SaneUListProcessor(md.parser) + + +def makeExtension(configs={}): + return SaneListExtension(configs=configs) + diff --git a/third_party/markdown/extensions/smart_strong.py b/third_party/markdown/extensions/smart_strong.py new file mode 100644 index 0000000..4818cf9 --- /dev/null +++ b/third_party/markdown/extensions/smart_strong.py @@ -0,0 +1,42 @@ +''' +Smart_Strong Extension for Python-Markdown +========================================== + +This extention adds smarter handling of double underscores within words. + +Simple Usage: + + >>> import markdown + >>> print markdown.markdown('Text with double__underscore__words.', + ... extensions=['smart_strong']) + <p>Text with double__underscore__words.</p> + >>> print markdown.markdown('__Strong__ still works.', + ... extensions=['smart_strong']) + <p><strong>Strong</strong> still works.</p> + >>> print markdown.markdown('__this__works__too__.', + ... extensions=['smart_strong']) + <p><strong>this__works__too</strong>.</p> + +Copyright 2011 +[Waylan Limberg](http://achinghead.com) + +''' + +from __future__ import absolute_import +from __future__ import unicode_literals +from . import Extension +from ..inlinepatterns import SimpleTagPattern + +SMART_STRONG_RE = r'(?<!\w)(_{2})(?!_)(.+?)(?<!_)\2(?!\w)' +STRONG_RE = r'(\*{2})(.+?)\2' + +class SmartEmphasisExtension(Extension): + """ Add smart_emphasis extension to Markdown class.""" + + def extendMarkdown(self, md, md_globals): + """ Modify inline patterns. """ + md.inlinePatterns['strong'] = SimpleTagPattern(STRONG_RE, 'strong') + md.inlinePatterns.add('strong2', SimpleTagPattern(SMART_STRONG_RE, 'strong'), '>emphasis2') + +def makeExtension(configs={}): + return SmartEmphasisExtension(configs=dict(configs)) diff --git a/third_party/markdown/extensions/tables.py b/third_party/markdown/extensions/tables.py new file mode 100644 index 0000000..ad52ec1 --- /dev/null +++ b/third_party/markdown/extensions/tables.py @@ -0,0 +1,100 @@ +""" +Tables Extension for Python-Markdown +==================================== + +Added parsing of tables to Python-Markdown. + +A simple example: + + First Header | Second Header + ------------- | ------------- + Content Cell | Content Cell + Content Cell | Content Cell + +Copyright 2009 - [Waylan Limberg](http://achinghead.com) +""" + +from __future__ import absolute_import +from __future__ import unicode_literals +from . import Extension +from ..blockprocessors import BlockProcessor +from ..util import etree + +class TableProcessor(BlockProcessor): + """ Process Tables. """ + + def test(self, parent, block): + rows = block.split('\n') + return (len(rows) > 2 and '|' in rows[0] and + '|' in rows[1] and '-' in rows[1] and + rows[1].strip()[0] in ['|', ':', '-']) + + def run(self, parent, blocks): + """ Parse a table block and build table. """ + block = blocks.pop(0).split('\n') + header = block[0].strip() + seperator = block[1].strip() + rows = block[2:] + # Get format type (bordered by pipes or not) + border = False + if header.startswith('|'): + border = True + # Get alignment of columns + align = [] + for c in self._split_row(seperator, border): + if c.startswith(':') and c.endswith(':'): + align.append('center') + elif c.startswith(':'): + align.append('left') + elif c.endswith(':'): + align.append('right') + else: + align.append(None) + # Build table + table = etree.SubElement(parent, 'table') + thead = etree.SubElement(table, 'thead') + self._build_row(header, thead, align, border) + tbody = etree.SubElement(table, 'tbody') + for row in rows: + self._build_row(row.strip(), tbody, align, border) + + def _build_row(self, row, parent, align, border): + """ Given a row of text, build table cells. """ + tr = etree.SubElement(parent, 'tr') + tag = 'td' + if parent.tag == 'thead': + tag = 'th' + cells = self._split_row(row, border) + # We use align here rather than cells to ensure every row + # contains the same number of columns. + for i, a in enumerate(align): + c = etree.SubElement(tr, tag) + try: + c.text = cells[i].strip() + except IndexError: + c.text = "" + if a: + c.set('align', a) + + def _split_row(self, row, border): + """ split a row of text into list of cells. """ + if border: + if row.startswith('|'): + row = row[1:] + if row.endswith('|'): + row = row[:-1] + return row.split('|') + + +class TableExtension(Extension): + """ Add tables to Markdown. """ + + def extendMarkdown(self, md, md_globals): + """ Add an instance of TableProcessor to BlockParser. """ + md.parser.blockprocessors.add('table', + TableProcessor(md.parser), + '<hashheader') + + +def makeExtension(configs={}): + return TableExtension(configs=configs) diff --git a/third_party/markdown/extensions/toc.py b/third_party/markdown/extensions/toc.py new file mode 100644 index 0000000..73b0844 --- /dev/null +++ b/third_party/markdown/extensions/toc.py @@ -0,0 +1,221 @@ +""" +Table of Contents Extension for Python-Markdown +* * * + +(c) 2008 [Jack Miller](http://codezen.org) + +Dependencies: +* [Markdown 2.1+](http://packages.python.org/Markdown/) + +""" + +from __future__ import absolute_import +from __future__ import unicode_literals +from . import Extension +from ..treeprocessors import Treeprocessor +from ..util import etree +from .headerid import slugify, unique, itertext +import re + + +def order_toc_list(toc_list): + """Given an unsorted list with errors and skips, return a nested one. + [{'level': 1}, {'level': 2}] + => + [{'level': 1, 'children': [{'level': 2, 'children': []}]}] + + A wrong list is also converted: + [{'level': 2}, {'level': 1}] + => + [{'level': 2, 'children': []}, {'level': 1, 'children': []}] + """ + + def build_correct(remaining_list, prev_elements=[{'level': 1000}]): + + if not remaining_list: + return [], [] + + current = remaining_list.pop(0) + if not 'children' in current.keys(): + current['children'] = [] + + if not prev_elements: + # This happens for instance with [8, 1, 1], ie. when some + # header level is outside a scope. We treat it as a + # top-level + next_elements, children = build_correct(remaining_list, [current]) + current['children'].append(children) + return [current] + next_elements, [] + + prev_element = prev_elements.pop() + children = [] + next_elements = [] + # Is current part of the child list or next list? + if current['level'] > prev_element['level']: + #print "%d is a child of %d" % (current['level'], prev_element['level']) + prev_elements.append(prev_element) + prev_elements.append(current) + prev_element['children'].append(current) + next_elements2, children2 = build_correct(remaining_list, prev_elements) + children += children2 + next_elements += next_elements2 + else: + #print "%d is ancestor of %d" % (current['level'], prev_element['level']) + if not prev_elements: + #print "No previous elements, so appending to the next set" + next_elements.append(current) + prev_elements = [current] + next_elements2, children2 = build_correct(remaining_list, prev_elements) + current['children'].extend(children2) + else: + #print "Previous elements, comparing to those first" + remaining_list.insert(0, current) + next_elements2, children2 = build_correct(remaining_list, prev_elements) + children.extend(children2) + next_elements += next_elements2 + + return next_elements, children + + ordered_list, __ = build_correct(toc_list) + return ordered_list + + +class TocTreeprocessor(Treeprocessor): + + # Iterator wrapper to get parent and child all at once + def iterparent(self, root): + for parent in root.getiterator(): + for child in parent: + yield parent, child + + def add_anchor(self, c, elem_id): #@ReservedAssignment + if self.use_anchors: + anchor = etree.Element("a") + anchor.text = c.text + anchor.attrib["href"] = "#" + elem_id + anchor.attrib["class"] = "toclink" + c.text = "" + for elem in c.getchildren(): + anchor.append(elem) + c.remove(elem) + c.append(anchor) + + def build_toc_etree(self, div, toc_list): + # Add title to the div + if self.config["title"]: + header = etree.SubElement(div, "span") + header.attrib["class"] = "toctitle" + header.text = self.config["title"] + + def build_etree_ul(toc_list, parent): + ul = etree.SubElement(parent, "ul") + for item in toc_list: + # List item link, to be inserted into the toc div + li = etree.SubElement(ul, "li") + link = etree.SubElement(li, "a") + link.text = item.get('name', '') + link.attrib["href"] = '#' + item.get('id', '') + if item['children']: + build_etree_ul(item['children'], li) + return ul + + return build_etree_ul(toc_list, div) + + def run(self, doc): + + div = etree.Element("div") + div.attrib["class"] = "toc" + header_rgx = re.compile("[Hh][123456]") + + self.use_anchors = self.config["anchorlink"] in [1, '1', True, 'True', 'true'] + + # Get a list of id attributes + used_ids = set() + for c in doc.getiterator(): + if "id" in c.attrib: + used_ids.add(c.attrib["id"]) + + toc_list = [] + marker_found = False + for (p, c) in self.iterparent(doc): + text = ''.join(itertext(c)).strip() + if not text: + continue + + # To keep the output from screwing up the + # validation by putting a <div> inside of a <p> + # we actually replace the <p> in its entirety. + # We do not allow the marker inside a header as that + # would causes an enless loop of placing a new TOC + # inside previously generated TOC. + if c.text and c.text.strip() == self.config["marker"] and \ + not header_rgx.match(c.tag) and c.tag not in ['pre', 'code']: + for i in range(len(p)): + if p[i] == c: + p[i] = div + break + marker_found = True + + if header_rgx.match(c.tag): + + # Do not override pre-existing ids + if not "id" in c.attrib: + elem_id = unique(self.config["slugify"](text, '-'), used_ids) + c.attrib["id"] = elem_id + else: + elem_id = c.attrib["id"] + + tag_level = int(c.tag[-1]) + + toc_list.append({'level': tag_level, + 'id': elem_id, + 'name': text}) + + self.add_anchor(c, elem_id) + + toc_list_nested = order_toc_list(toc_list) + self.build_toc_etree(div, toc_list_nested) + prettify = self.markdown.treeprocessors.get('prettify') + if prettify: prettify.run(div) + if not marker_found: + # serialize and attach to markdown instance. + toc = self.markdown.serializer(div) + for pp in self.markdown.postprocessors.values(): + toc = pp.run(toc) + self.markdown.toc = toc + + +class TocExtension(Extension): + + TreeProcessorClass = TocTreeprocessor + + def __init__(self, configs=[]): + self.config = { "marker" : ["[TOC]", + "Text to find and replace with Table of Contents -" + "Defaults to \"[TOC]\""], + "slugify" : [slugify, + "Function to generate anchors based on header text-" + "Defaults to the headerid ext's slugify function."], + "title" : [None, + "Title to insert into TOC <div> - " + "Defaults to None"], + "anchorlink" : [0, + "1 if header should be a self link" + "Defaults to 0"]} + + for key, value in configs: + self.setConfig(key, value) + + def extendMarkdown(self, md, md_globals): + tocext = self.TreeProcessorClass(md) + tocext.config = self.getConfigs() + # Headerid ext is set to '>prettify'. With this set to '_end', + # it should always come after headerid ext (and honor ids assinged + # by the header id extension) if both are used. Same goes for + # attr_list extension. This must come last because we don't want + # to redefine ids after toc is created. But we do want toc prettified. + md.treeprocessors.add("toc", tocext, "_end") + + +def makeExtension(configs={}): + return TocExtension(configs=configs) diff --git a/third_party/markdown/extensions/wikilinks.py b/third_party/markdown/extensions/wikilinks.py new file mode 100644 index 0000000..877890b --- /dev/null +++ b/third_party/markdown/extensions/wikilinks.py @@ -0,0 +1,151 @@ +''' +WikiLinks Extension for Python-Markdown +====================================== + +Converts [[WikiLinks]] to relative links. Requires Python-Markdown 2.0+ + +Basic usage: + + >>> import markdown + >>> text = "Some text with a [[WikiLink]]." + >>> html = markdown.markdown(text, ['wikilinks']) + >>> print html + <p>Some text with a <a class="wikilink" href="/WikiLink/">WikiLink</a>.</p> + +Whitespace behavior: + + >>> print markdown.markdown('[[ foo bar_baz ]]', ['wikilinks']) + <p><a class="wikilink" href="/foo_bar_baz/">foo bar_baz</a></p> + >>> print markdown.markdown('foo [[ ]] bar', ['wikilinks']) + <p>foo bar</p> + +To define custom settings the simple way: + + >>> print markdown.markdown(text, + ... ['wikilinks(base_url=/wiki/,end_url=.html,html_class=foo)'] + ... ) + <p>Some text with a <a class="foo" href="/wiki/WikiLink.html">WikiLink</a>.</p> + +Custom settings the complex way: + + >>> md = markdown.Markdown( + ... extensions = ['wikilinks'], + ... extension_configs = {'wikilinks': [ + ... ('base_url', 'http://example.com/'), + ... ('end_url', '.html'), + ... ('html_class', '') ]}, + ... safe_mode = True) + >>> print md.convert(text) + <p>Some text with a <a href="http://example.com/WikiLink.html">WikiLink</a>.</p> + +Use MetaData with mdx_meta.py (Note the blank html_class in MetaData): + + >>> text = """wiki_base_url: http://example.com/ + ... wiki_end_url: .html + ... wiki_html_class: + ... + ... Some text with a [[WikiLink]].""" + >>> md = markdown.Markdown(extensions=['meta', 'wikilinks']) + >>> print md.convert(text) + <p>Some text with a <a href="http://example.com/WikiLink.html">WikiLink</a>.</p> + +MetaData should not carry over to next document: + + >>> print md.convert("No [[MetaData]] here.") + <p>No <a class="wikilink" href="/MetaData/">MetaData</a> here.</p> + +Define a custom URL builder: + + >>> def my_url_builder(label, base, end): + ... return '/bar/' + >>> md = markdown.Markdown(extensions=['wikilinks'], + ... extension_configs={'wikilinks' : [('build_url', my_url_builder)]}) + >>> print md.convert('[[foo]]') + <p><a class="wikilink" href="/bar/">foo</a></p> + +From the command line: + + python markdown.py -x wikilinks(base_url=http://example.com/,end_url=.html,html_class=foo) src.txt + +By [Waylan Limberg](http://achinghead.com/). + +License: [BSD](http://www.opensource.org/licenses/bsd-license.php) + +Dependencies: +* [Python 2.3+](http://python.org) +* [Markdown 2.0+](http://packages.python.org/Markdown/) +''' + +from __future__ import absolute_import +from __future__ import unicode_literals +from . import Extension +from ..inlinepatterns import Pattern +from ..util import etree +import re + +def build_url(label, base, end): + """ Build a url from the label, a base, and an end. """ + clean_label = re.sub(r'([ ]+_)|(_[ ]+)|([ ]+)', '_', label) + return '%s%s%s'% (base, clean_label, end) + + +class WikiLinkExtension(Extension): + def __init__(self, configs): + # set extension defaults + self.config = { + 'base_url' : ['/', 'String to append to beginning or URL.'], + 'end_url' : ['/', 'String to append to end of URL.'], + 'html_class' : ['wikilink', 'CSS hook. Leave blank for none.'], + 'build_url' : [build_url, 'Callable formats URL from label.'], + } + + # Override defaults with user settings + for key, value in configs : + self.setConfig(key, value) + + def extendMarkdown(self, md, md_globals): + self.md = md + + # append to end of inline patterns + WIKILINK_RE = r'\[\[([\w0-9_ -]+)\]\]' + wikilinkPattern = WikiLinks(WIKILINK_RE, self.getConfigs()) + wikilinkPattern.md = md + md.inlinePatterns.add('wikilink', wikilinkPattern, "<not_strong") + + +class WikiLinks(Pattern): + def __init__(self, pattern, config): + super(WikiLinks, self).__init__(pattern) + self.config = config + + def handleMatch(self, m): + if m.group(2).strip(): + base_url, end_url, html_class = self._getMeta() + label = m.group(2).strip() + url = self.config['build_url'](label, base_url, end_url) + a = etree.Element('a') + a.text = label + a.set('href', url) + if html_class: + a.set('class', html_class) + else: + a = '' + return a + + def _getMeta(self): + """ Return meta data or config data. """ + base_url = self.config['base_url'] + end_url = self.config['end_url'] + html_class = self.config['html_class'] + if hasattr(self.md, 'Meta'): + if 'wiki_base_url' in self.md.Meta: + base_url = self.md.Meta['wiki_base_url'][0] + if 'wiki_end_url' in self.md.Meta: + end_url = self.md.Meta['wiki_end_url'][0] + if 'wiki_html_class' in self.md.Meta: + html_class = self.md.Meta['wiki_html_class'][0] + return base_url, end_url, html_class + + +def makeExtension(configs=None) : + return WikiLinkExtension(configs=configs) diff --git a/third_party/markdown/inlinepatterns.py b/third_party/markdown/inlinepatterns.py new file mode 100644 index 0000000..de957ef --- /dev/null +++ b/third_party/markdown/inlinepatterns.py @@ -0,0 +1,483 @@ +""" +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 +""" + +from __future__ import absolute_import +from __future__ import unicode_literals +from . import util +from . import odict +import re +try: + from urllib.parse import urlparse, urlunparse +except ImportError: + from urlparse import urlparse, urlunparse +try: + from html import entities +except ImportError: + import htmlentitydefs as entities + + +def build_inlinepatterns(md_instance, **kwargs): + """ Build the default set of inline patterns for Markdown. """ + inlinePatterns = odict.OrderedDict() + inlinePatterns["backtick"] = BacktickPattern(BACKTICK_RE) + inlinePatterns["escape"] = EscapePattern(ESCAPE_RE, md_instance) + inlinePatterns["reference"] = ReferencePattern(REFERENCE_RE, md_instance) + inlinePatterns["link"] = LinkPattern(LINK_RE, md_instance) + inlinePatterns["image_link"] = ImagePattern(IMAGE_LINK_RE, md_instance) + inlinePatterns["image_reference"] = \ + ImageReferencePattern(IMAGE_REFERENCE_RE, md_instance) + inlinePatterns["short_reference"] = \ + ReferencePattern(SHORT_REF_RE, md_instance) + inlinePatterns["autolink"] = AutolinkPattern(AUTOLINK_RE, md_instance) + inlinePatterns["automail"] = AutomailPattern(AUTOMAIL_RE, md_instance) + inlinePatterns["linebreak"] = SubstituteTagPattern(LINE_BREAK_RE, 'br') + if md_instance.safeMode != 'escape': + inlinePatterns["html"] = HtmlPattern(HTML_RE, md_instance) + inlinePatterns["entity"] = HtmlPattern(ENTITY_RE, md_instance) + inlinePatterns["not_strong"] = SimpleTextPattern(NOT_STRONG_RE) + inlinePatterns["strong_em"] = DoubleTagPattern(STRONG_EM_RE, 'strong,em') + inlinePatterns["strong"] = SimpleTagPattern(STRONG_RE, 'strong') + inlinePatterns["emphasis"] = SimpleTagPattern(EMPHASIS_RE, 'em') + if md_instance.smart_emphasis: + inlinePatterns["emphasis2"] = SimpleTagPattern(SMART_EMPHASIS_RE, 'em') + else: + inlinePatterns["emphasis2"] = SimpleTagPattern(EMPHASIS_2_RE, 'em') + return inlinePatterns + +""" +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*** +SMART_EMPHASIS_RE = r'(?<!\w)(_)(?!_)(.+?)(?<!_)\2(?!\w)' # _smart_emphasis_ +EMPHASIS_2_RE = r'(_)(.+?)\2' # _emphasis_ +LINK_RE = NOIMG + BRK + \ +r'''\(\s*(<.*?>|((?:(?:\(.*?\))|[^\(\)]))*?)\s*((['"])(.*?)\12\s*)?\)''' +# [text](url) or [text](<url>) or [text](url "title") + +IMAGE_LINK_RE = r'\!' + BRK + r'\s*\((<.*?>|([^\)]*))\)' +#  or  +REFERENCE_RE = NOIMG + BRK+ r'\s?\[([^\]]*)\]' # [Google][3] +SHORT_REF_RE = NOIMG + r'\[([^\]]+)\]' # [Google] +IMAGE_REFERENCE_RE = r'\!' + BRK + '\s?\[([^\]]*)\]' # ![alt text][2] +NOT_STRONG_RE = r'((^| )(\*|_)( |$))' # stand-alone * or _ +AUTOLINK_RE = r'<((?:[Ff]|[Hh][Tt])[Tt][Pp][Ss]?://[^>]*)>' # <http://www.123.com> +AUTOMAIL_RE = r'<([^> \!]*@[^> ]*)>' # <me@example.com> + +HTML_RE = r'(\<([a-zA-Z/][^\>]*?|\!--.*?--)\>)' # <...> +ENTITY_RE = r'(&[\#a-zA-Z0-9]*;)' # & +LINE_BREAK_RE = r' \n' # two spaces at end of line + + +def dequote(string): + """Remove quotes from around a string.""" + if ( ( string.startswith('"') and string.endswith('"')) + or (string.startswith("'") and string.endswith("'")) ): + return string[1:-1] + else: + return string + +ATTR_RE = re.compile("\{@([^\}]*)=([^\}]*)}") # {@id=123} + +def handleAttributes(text, parent): + """Set values of an element based on attribute definitions ({@id=123}).""" + def attributeCallback(match): + parent.set(match.group(1), match.group(2).replace('\n', ' ')) + return ATTR_RE.sub(attributeCallback, text) + + +""" +The pattern classes +----------------------------------------------------------------------------- +""" + +class Pattern(object): + """Base class that inline patterns subclass. """ + + def __init__(self, pattern, markdown_instance=None): + """ + Create an instant of an inline pattern. + + Keyword arguments: + + * pattern: A regular expression that matches a pattern + + """ + self.pattern = pattern + self.compiled_re = re.compile("^(.*?)%s(.*?)$" % pattern, + re.DOTALL | re.UNICODE) + + # 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__ + + def unescape(self, text): + """ Return unescaped text given text with an inline placeholder. """ + try: + stash = self.markdown.treeprocessors['inline'].stashed_nodes + except KeyError: + return text + def itertext(el): + ' Reimplement Element.itertext for older python versions ' + tag = el.tag + if not isinstance(tag, util.string_type) and tag is not None: + return + if el.text: + yield el.text + for e in el: + for s in itertext(e): + yield s + if e.tail: + yield e.tail + def get_stash(m): + id = m.group(1) + if id in stash: + value = stash.get(id) + if isinstance(value, util.string_type): + return value + else: + # An etree Element - return text content only + return ''.join(itertext(value)) + return util.INLINE_PLACEHOLDER_RE.sub(get_stash, text) + + +class SimpleTextPattern(Pattern): + """ Return a simple text of group(2) of a Pattern. """ + def handleMatch(self, m): + text = m.group(2) + if text == util.INLINE_PLACEHOLDER_PREFIX: + return None + return text + + +class EscapePattern(Pattern): + """ Return an escaped character. """ + + def handleMatch(self, m): + char = m.group(2) + if char in self.markdown.ESCAPED_CHARS: + return '%s%s%s' % (util.STX, ord(char), util.ETX) + else: + return '\\%s' % char + + +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 = util.etree.Element(self.tag) + el.text = m.group(3) + return el + + +class SubstituteTagPattern(SimpleTagPattern): + """ Return an element of type `tag` with no children. """ + def handleMatch (self, m): + return util.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 = util.etree.Element(self.tag) + el.text = util.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 = util.etree.Element(tag1) + el2 = util.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 = self.unescape(m.group(2)) + place_holder = self.markdown.htmlStash.store(rawhtml) + return place_holder + + def unescape(self, text): + """ Return unescaped text given text with an inline placeholder. """ + try: + stash = self.markdown.treeprocessors['inline'].stashed_nodes + except KeyError: + return text + def get_stash(m): + id = m.group(1) + value = stash.get(id) + if value is not None: + try: + return self.markdown.serializer(value) + except: + return '\%s' % value + + return util.INLINE_PLACEHOLDER_RE.sub(get_stash, text) + + +class LinkPattern(Pattern): + """ Return a link element from the given match. """ + def handleMatch(self, m): + el = util.etree.Element("a") + el.text = m.group(2) + title = m.group(13) + href = m.group(9) + + if href: + if href[0] == "<": + href = href[1:-1] + el.set("href", self.sanitize_url(self.unescape(href.strip()))) + else: + el.set("href", "") + + if title: + title = dequote(self.unescape(title)) + 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`. + + """ + url = url.replace(' ', '%20') + if not self.markdown.safeMode: + # Return immediately bipassing parsing. + return url + + try: + scheme, netloc, path, params, query, fragment = url = urlparse(url) + except ValueError: + # Bad url - so bad it couldn't be parsed. + return '' + + locless_schemes = ['', 'mailto', 'news'] + allowed_schemes = locless_schemes + ['http', 'https', 'ftp', 'ftps'] + if scheme not in allowed_schemes: + # Not a known (allowed) scheme. Not safe. + return '' + + if netloc == '' and scheme not in locless_schemes: + # This should not happen. Treat as suspect. + return '' + + for part in url[2:]: + if ":" in part: + # A colon in "path", "parameters", "query" or "fragment" is suspect. + return '' + + # Url passes all tests. Return url as-is. + return urlunparse(url) + +class ImagePattern(LinkPattern): + """ Return a img element from the given match. """ + def handleMatch(self, m): + el = util.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(self.unescape(src))) + else: + el.set('src', "") + if len(src_parts) > 1: + el.set('title', dequote(self.unescape(" ".join(src_parts[1:])))) + + if self.markdown.enable_attributes: + truealt = handleAttributes(m.group(2), el) + else: + truealt = m.group(2) + + el.set('alt', self.unescape(truealt)) + return el + +class ReferencePattern(LinkPattern): + """ Match to a stored reference and return link element. """ + + NEWLINE_CLEANUP_RE = re.compile(r'[ ]?\n', re.MULTILINE) + + def handleMatch(self, m): + try: + id = m.group(9).lower() + except IndexError: + id = None + if not id: + # if we got something like "[Google][]" or "[Goggle]" + # we'll use "google" as the id + id = m.group(2).lower() + + # Clean up linebreaks in id + id = self.NEWLINE_CLEANUP_RE.sub(' ', id) + 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 = util.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 = util.etree.Element("img") + el.set("src", self.sanitize_url(href)) + if title: + el.set("title", title) + + if self.markdown.enable_attributes: + text = handleAttributes(text, el) + + el.set("alt", self.unescape(text)) + return el + + +class AutolinkPattern(Pattern): + """ Return a link Element given an autolink (`<http://example/com>`). """ + def handleMatch(self, m): + el = util.etree.Element("a") + el.set('href', self.unescape(m.group(2))) + el.text = util.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 = util.etree.Element('a') + email = self.unescape(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 = entities.codepoint2name.get(code) + if entity: + return "%s%s;" % (util.AMP_SUBSTITUTE, entity) + else: + return "%s#%d;" % (util.AMP_SUBSTITUTE, code) + + letters = [codepoint2name(ord(letter)) for letter in email] + el.text = util.AtomicString(''.join(letters)) + + mailto = "mailto:" + email + mailto = "".join([util.AMP_SUBSTITUTE + '#%d;' % + ord(letter) for letter in mailto]) + el.set('href', mailto) + return el + diff --git a/third_party/markdown/odict.py b/third_party/markdown/odict.py new file mode 100644 index 0000000..8089ece --- /dev/null +++ b/third_party/markdown/odict.py @@ -0,0 +1,194 @@ +from __future__ import unicode_literals +from __future__ import absolute_import +from . import util + +from copy import deepcopy + +def iteritems_compat(d): + """Return an iterator over the (key, value) pairs of a dictionary. + Copied from `six` module.""" + return iter(getattr(d, _iteritems)()) + +class OrderedDict(dict): + """ + A dictionary that keeps its keys in the order in which they're inserted. + + Copied from Django's SortedDict with some modifications. + + """ + def __new__(cls, *args, **kwargs): + instance = super(OrderedDict, cls).__new__(cls, *args, **kwargs) + instance.keyOrder = [] + return instance + + def __init__(self, data=None): + if data is None or isinstance(data, dict): + data = data or [] + super(OrderedDict, self).__init__(data) + self.keyOrder = list(data) if data else [] + else: + super(OrderedDict, self).__init__() + super_set = super(OrderedDict, self).__setitem__ + for key, value in data: + # Take the ordering from first key + if key not in self: + self.keyOrder.append(key) + # But override with last value in data (dict() does this) + super_set(key, value) + + def __deepcopy__(self, memo): + return self.__class__([(key, deepcopy(value, memo)) + for key, value in self.items()]) + + def __copy__(self): + # The Python's default copy implementation will alter the state + # of self. The reason for this seems complex but is likely related to + # subclassing dict. + return self.copy() + + def __setitem__(self, key, value): + if key not in self: + self.keyOrder.append(key) + super(OrderedDict, self).__setitem__(key, value) + + def __delitem__(self, key): + super(OrderedDict, self).__delitem__(key) + self.keyOrder.remove(key) + + def __iter__(self): + return iter(self.keyOrder) + + def __reversed__(self): + return reversed(self.keyOrder) + + def pop(self, k, *args): + result = super(OrderedDict, self).pop(k, *args) + try: + self.keyOrder.remove(k) + except ValueError: + # Key wasn't in the dictionary in the first place. No problem. + pass + return result + + def popitem(self): + result = super(OrderedDict, self).popitem() + self.keyOrder.remove(result[0]) + return result + + def _iteritems(self): + for key in self.keyOrder: + yield key, self[key] + + def _iterkeys(self): + for key in self.keyOrder: + yield key + + def _itervalues(self): + for key in self.keyOrder: + yield self[key] + + if util.PY3: + items = _iteritems + keys = _iterkeys + values = _itervalues + else: + iteritems = _iteritems + iterkeys = _iterkeys + itervalues = _itervalues + + def items(self): + return [(k, self[k]) for k in self.keyOrder] + + def keys(self): + return self.keyOrder[:] + + def values(self): + return [self[k] for k in self.keyOrder] + + def update(self, dict_): + for k, v in iteritems_compat(dict_): + self[k] = v + + def setdefault(self, key, default): + if key not in self: + self.keyOrder.append(key) + return super(OrderedDict, self).setdefault(key, default) + + def value_for_index(self, index): + """Returns the value of the item at the given zero-based index.""" + return self[self.keyOrder[index]] + + def insert(self, index, key, value): + """Inserts the key, value pair before the item with the given index.""" + if key in self.keyOrder: + n = self.keyOrder.index(key) + del self.keyOrder[n] + if n < index: + index -= 1 + self.keyOrder.insert(index, key) + super(OrderedDict, self).__setitem__(key, value) + + def copy(self): + """Returns a copy of this object.""" + # This way of initializing the copy means it works for subclasses, too. + return self.__class__(self) + + def __repr__(self): + """ + Replaces the normal dict.__repr__ with a version that returns the keys + in their Ordered order. + """ + return '{%s}' % ', '.join(['%r: %r' % (k, v) for k, v in iteritems_compat(self)]) + + def clear(self): + super(OrderedDict, self).clear() + self.keyOrder = [] + + def index(self, key): + """ Return the index of a given key. """ + try: + return self.keyOrder.index(key) + except ValueError: + raise ValueError("Element '%s' was not found in OrderedDict" % key) + + def index_for_location(self, location): + """ Return index or None for a given location. """ + if location == '_begin': + i = 0 + elif location == '_end': + i = None + elif location.startswith('<') or location.startswith('>'): + i = self.index(location[1:]) + if location.startswith('>'): + if i >= len(self): + # last item + i = None + else: + i += 1 + else: + raise ValueError('Not a valid location: "%s". Location key ' + 'must start with a ">" or "<".' % location) + return i + + def add(self, key, value, location): + """ Insert by key location. """ + i = self.index_for_location(location) + if i is not None: + self.insert(i, key, value) + else: + self.__setitem__(key, value) + + def link(self, key, location): + """ Change location of an existing item. """ + n = self.keyOrder.index(key) + del self.keyOrder[n] + try: + i = self.index_for_location(location) + if i is not None: + self.keyOrder.insert(i, key) + else: + self.keyOrder.append(key) + except Exception as e: + # restore to prevent data loss and reraise + self.keyOrder.insert(n, key) + raise e diff --git a/third_party/markdown/postprocessors.py b/third_party/markdown/postprocessors.py new file mode 100644 index 0000000..5f3f032 --- /dev/null +++ b/third_party/markdown/postprocessors.py @@ -0,0 +1,104 @@ +""" +POST-PROCESSORS +============================================================================= + +Markdown also allows post-processors, which are similar to preprocessors in +that they need to implement a "run" method. However, they are run after core +processing. + +""" + +from __future__ import absolute_import +from __future__ import unicode_literals +from . import util +from . import odict +import re + + +def build_postprocessors(md_instance, **kwargs): + """ Build the default postprocessors for Markdown. """ + postprocessors = odict.OrderedDict() + postprocessors["raw_html"] = RawHtmlPostprocessor(md_instance) + postprocessors["amp_substitute"] = AndSubstitutePostprocessor() + postprocessors["unescape"] = UnescapePostprocessor() + return postprocessors + + +class Postprocessor(util.Processor): + """ + Postprocessors are run after the ElementTree it converted back into text. + + Each Postprocessor implements a "run" method that takes a pointer to a + text string, modifies it as necessary and returns a text string. + + Postprocessors must extend markdown.Postprocessor. + + """ + + def run(self, text): + """ + Subclasses of Postprocessor should implement a `run` method, which + takes the html document as a single text string and returns a + (possibly modified) string. + + """ + pass + + +class RawHtmlPostprocessor(Postprocessor): + """ Restore raw html to the document. """ + + def run(self, text): + """ Iterate over html stash and restore "safe" html. """ + for i in range(self.markdown.htmlStash.html_counter): + html, safe = self.markdown.htmlStash.rawHtmlBlocks[i] + if self.markdown.safeMode and not safe: + if str(self.markdown.safeMode).lower() == 'escape': + html = self.escape(html) + elif str(self.markdown.safeMode).lower() == 'remove': + html = '' + else: + html = self.markdown.html_replacement_text + if self.isblocklevel(html) and (safe or not self.markdown.safeMode): + text = text.replace("<p>%s</p>" % + (self.markdown.htmlStash.get_placeholder(i)), + html + "\n") + text = text.replace(self.markdown.htmlStash.get_placeholder(i), + html) + return text + + def escape(self, html): + """ Basic html escaping """ + html = html.replace('&', '&') + html = html.replace('<', '<') + html = html.replace('>', '>') + return html.replace('"', '"') + + def isblocklevel(self, html): + m = re.match(r'^\<\/?([^ >]+)', html) + if m: + if m.group(1)[0] in ('!', '?', '@', '%'): + # Comment, php etc... + return True + return util.isBlockLevel(m.group(1)) + return False + + +class AndSubstitutePostprocessor(Postprocessor): + """ Restore valid entities """ + + def run(self, text): + text = text.replace(util.AMP_SUBSTITUTE, "&") + return text + + +class UnescapePostprocessor(Postprocessor): + """ Restore escaped chars """ + + RE = re.compile('%s(\d+)%s' % (util.STX, util.ETX)) + + def unescape(self, m): + return util.int2str(int(m.group(1))) + + def run(self, text): + return self.RE.sub(self.unescape, text) diff --git a/third_party/markdown/preprocessors.py b/third_party/markdown/preprocessors.py new file mode 100644 index 0000000..72b2ed6 --- /dev/null +++ b/third_party/markdown/preprocessors.py @@ -0,0 +1,298 @@ +""" +PRE-PROCESSORS +============================================================================= + +Preprocessors work on source text before we start doing anything too +complicated. +""" + +from __future__ import absolute_import +from __future__ import unicode_literals +from . import util +from . import odict +import re + + +def build_preprocessors(md_instance, **kwargs): + """ Build the default set of preprocessors used by Markdown. """ + preprocessors = odict.OrderedDict() + preprocessors['normalize_whitespace'] = NormalizeWhitespace(md_instance) + if md_instance.safeMode != 'escape': + preprocessors["html_block"] = HtmlBlockPreprocessor(md_instance) + preprocessors["reference"] = ReferencePreprocessor(md_instance) + return preprocessors + + +class Preprocessor(util.Processor): + """ + Preprocessors are run after the text is broken into lines. + + Each preprocessor implements a "run" method that takes a pointer to a + list of lines of the document, modifies it as necessary and returns + either the same pointer or a pointer to a new list. + + Preprocessors must extend markdown.Preprocessor. + + """ + def run(self, lines): + """ + Each subclass of Preprocessor should override the `run` method, which + takes the document as a list of strings split by newlines and returns + the (possibly modified) list of lines. + + """ + pass + + +class NormalizeWhitespace(Preprocessor): + """ Normalize whitespace for consistant parsing. """ + + def run(self, lines): + source = '\n'.join(lines) + source = source.replace(util.STX, "").replace(util.ETX, "") + source = source.replace("\r\n", "\n").replace("\r", "\n") + "\n\n" + source = source.expandtabs(self.markdown.tab_length) + source = re.sub(r'(?<=\n) +\n', '\n', source) + return source.split('\n') + + +class HtmlBlockPreprocessor(Preprocessor): + """Remove html blocks from the text and store them for later retrieval.""" + + right_tag_patterns = ["</%s>", "%s>"] + attrs_pattern = r""" + \s+(?P<attr>[^>"'/= ]+)=(?P<q>['"])(?P<value>.*?)(?P=q) # attr="value" + | # OR + \s+(?P<attr1>[^>"'/= ]+)=(?P<value1>[^> ]+) # attr=value + | # OR + \s+(?P<attr2>[^>"'/= ]+) # attr + """ + left_tag_pattern = r'^\<(?P<tag>[^> ]+)(?P<attrs>(%s)*)\s*\/?\>?' % attrs_pattern + attrs_re = re.compile(attrs_pattern, re.VERBOSE) + left_tag_re = re.compile(left_tag_pattern, re.VERBOSE) + markdown_in_raw = False + + def _get_left_tag(self, block): + m = self.left_tag_re.match(block) + if m: + tag = m.group('tag') + raw_attrs = m.group('attrs') + attrs = {} + if raw_attrs: + for ma in self.attrs_re.finditer(raw_attrs): + if ma.group('attr'): + if ma.group('value'): + attrs[ma.group('attr').strip()] = ma.group('value') + else: + attrs[ma.group('attr').strip()] = "" + elif ma.group('attr1'): + if ma.group('value1'): + attrs[ma.group('attr1').strip()] = ma.group('value1') + else: + attrs[ma.group('attr1').strip()] = "" + elif ma.group('attr2'): + attrs[ma.group('attr2').strip()] = "" + return tag, len(m.group(0)), attrs + else: + tag = block[1:].split(">", 1)[0].lower() + return tag, len(tag)+2, {} + + def _recursive_tagfind(self, ltag, rtag, start_index, block): + while 1: + i = block.find(rtag, start_index) + if i == -1: + return -1 + j = block.find(ltag, start_index) + # if no ltag, or rtag found before another ltag, return index + if (j > i or j == -1): + return i + len(rtag) + # another ltag found before rtag, use end of ltag as starting + # point and search again + j = block.find('>', j) + start_index = self._recursive_tagfind(ltag, rtag, j + 1, block) + if start_index == -1: + # HTML potentially malformed- ltag has no corresponding + # rtag + return -1 + + def _get_right_tag(self, left_tag, left_index, block): + for p in self.right_tag_patterns: + tag = p % left_tag + i = self._recursive_tagfind("<%s" % left_tag, tag, left_index, block) + if i > 2: + return tag.lstrip("<").rstrip(">"), i + return block.rstrip()[-left_index:-1].lower(), len(block) + + def _equal_tags(self, left_tag, right_tag): + if left_tag[0] in ['?', '@', '%']: # handle PHP, etc. + return True + if ("/" + left_tag) == right_tag: + return True + if (right_tag == "--" and left_tag == "--"): + return True + elif left_tag == right_tag[1:] \ + and right_tag[0] == "/": + return True + else: + return False + + def _is_oneliner(self, tag): + return (tag in ['hr', 'hr/']) + + def run(self, lines): + text = "\n".join(lines) + new_blocks = [] + text = text.rsplit("\n\n") + items = [] + left_tag = '' + right_tag = '' + in_tag = False # flag + + while text: + block = text[0] + if block.startswith("\n"): + block = block[1:] + text = text[1:] + + if block.startswith("\n"): + block = block[1:] + + if not in_tag: + if block.startswith("<") and len(block.strip()) > 1: + + if block[1] == "!": + # is a comment block + left_tag, left_index, attrs = "--", 2, {} + else: + left_tag, left_index, attrs = self._get_left_tag(block) + right_tag, data_index = self._get_right_tag(left_tag, + left_index, + block) + # keep checking conditions below and maybe just append + + if data_index < len(block) \ + and (util.isBlockLevel(left_tag) + or left_tag == '--'): + text.insert(0, block[data_index:]) + block = block[:data_index] + + if not (util.isBlockLevel(left_tag) \ + or block[1] in ["!", "?", "@", "%"]): + new_blocks.append(block) + continue + + if self._is_oneliner(left_tag): + new_blocks.append(block.strip()) + continue + + if block.rstrip().endswith(">") \ + and self._equal_tags(left_tag, right_tag): + if self.markdown_in_raw and 'markdown' in attrs.keys(): + start = re.sub(r'\smarkdown(=[\'"]?[^> ]*[\'"]?)?', + '', block[:left_index]) + end = block[-len(right_tag)-2:] + block = block[left_index:-len(right_tag)-2] + new_blocks.append( + self.markdown.htmlStash.store(start)) + new_blocks.append(block) + new_blocks.append( + self.markdown.htmlStash.store(end)) + else: + new_blocks.append( + self.markdown.htmlStash.store(block.strip())) + continue + else: + # if is block level tag and is not complete + + if util.isBlockLevel(left_tag) or left_tag == "--" \ + and not block.rstrip().endswith(">"): + items.append(block.strip()) + in_tag = True + else: + new_blocks.append( + self.markdown.htmlStash.store(block.strip())) + + continue + + new_blocks.append(block) + + else: + items.append(block) + + right_tag, data_index = self._get_right_tag(left_tag, 0, block) + + if self._equal_tags(left_tag, right_tag): + # if find closing tag + + if data_index < len(block): + # we have more text after right_tag + items[-1] = block[:data_index] + text.insert(0, block[data_index:]) + + in_tag = False + if self.markdown_in_raw and 'markdown' in attrs.keys(): + start = re.sub(r'\smarkdown(=[\'"]?[^> ]*[\'"]?)?', + '', items[0][:left_index]) + items[0] = items[0][left_index:] + end = items[-1][-len(right_tag)-2:] + items[-1] = items[-1][:-len(right_tag)-2] + new_blocks.append( + self.markdown.htmlStash.store(start)) + new_blocks.extend(items) + new_blocks.append( + self.markdown.htmlStash.store(end)) + else: + new_blocks.append( + self.markdown.htmlStash.store('\n\n'.join(items))) + items = [] + + if items: + if self.markdown_in_raw and 'markdown' in attrs.keys(): + start = re.sub(r'\smarkdown(=[\'"]?[^> ]*[\'"]?)?', + '', items[0][:left_index]) + items[0] = items[0][left_index:] + end = items[-1][-len(right_tag)-2:] + items[-1] = items[-1][:-len(right_tag)-2] + new_blocks.append( + self.markdown.htmlStash.store(start)) + new_blocks.extend(items) + if end.strip(): + new_blocks.append( + self.markdown.htmlStash.store(end)) + else: + new_blocks.append( + self.markdown.htmlStash.store('\n\n'.join(items))) + #new_blocks.append(self.markdown.htmlStash.store('\n\n'.join(items))) + new_blocks.append('\n') + + new_text = "\n\n".join(new_blocks) + return new_text.split("\n") + + +class ReferencePreprocessor(Preprocessor): + """ Remove reference definitions from text and store for later use. """ + + TITLE = r'[ ]*(\"(.*)\"|\'(.*)\'|\((.*)\))[ ]*' + RE = re.compile(r'^[ ]{0,3}\[([^\]]*)\]:\s*([^ ]*)[ ]*(%s)?$' % TITLE, re.DOTALL) + TITLE_RE = re.compile(r'^%s$' % TITLE) + + def run (self, lines): + new_text = []; + while lines: + line = lines.pop(0) + m = self.RE.match(line) + if m: + id = m.group(1).strip().lower() + link = m.group(2).lstrip('<').rstrip('>') + t = m.group(5) or m.group(6) or m.group(7) + if not t: + # Check next line for title + tm = self.TITLE_RE.match(lines[0]) + if tm: + lines.pop(0) + t = tm.group(2) or tm.group(3) or tm.group(4) + self.markdown.references[id] = (link, t) + else: + new_text.append(line) + + return new_text #+ "\n" diff --git a/third_party/markdown/serializers.py b/third_party/markdown/serializers.py new file mode 100644 index 0000000..b19d61c --- /dev/null +++ b/third_party/markdown/serializers.py @@ -0,0 +1,277 @@ +# markdown/searializers.py +# +# Add x/html serialization to Elementree +# Taken from ElementTree 1.3 preview with slight modifications +# +# Copyright (c) 1999-2007 by Fredrik Lundh. All rights reserved. +# +# fredrik@pythonware.com +# http://www.pythonware.com +# +# -------------------------------------------------------------------- +# The ElementTree toolkit is +# +# Copyright (c) 1999-2007 by Fredrik Lundh +# +# By obtaining, using, and/or copying this software and/or its +# associated documentation, you agree that you have read, understood, +# and will comply with the following terms and conditions: +# +# Permission to use, copy, modify, and distribute this software and +# its associated documentation for any purpose and without fee is +# hereby granted, provided that the above copyright notice appears in +# all copies, and that both that copyright notice and this permission +# notice appear in supporting documentation, and that the name of +# Secret Labs AB or the author not be used in advertising or publicity +# pertaining to distribution of the software without specific, written +# prior permission. +# +# SECRET LABS AB AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD +# TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANT- +# ABILITY AND FITNESS. IN NO EVENT SHALL SECRET LABS AB OR THE AUTHOR +# BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY +# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, +# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS +# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE +# OF THIS SOFTWARE. +# -------------------------------------------------------------------- + + +from __future__ import absolute_import +from __future__ import unicode_literals +from . import util +ElementTree = util.etree.ElementTree +QName = util.etree.QName +if hasattr(util.etree, 'test_comment'): + Comment = util.etree.test_comment +else: + Comment = util.etree.Comment +PI = util.etree.PI +ProcessingInstruction = util.etree.ProcessingInstruction + +__all__ = ['to_html_string', 'to_xhtml_string'] + +HTML_EMPTY = ("area", "base", "basefont", "br", "col", "frame", "hr", + "img", "input", "isindex", "link", "meta" "param") + +try: + HTML_EMPTY = set(HTML_EMPTY) +except NameError: + pass + +_namespace_map = { + # "well-known" namespace prefixes + "http://www.w3.org/XML/1998/namespace": "xml", + "http://www.w3.org/1999/xhtml": "html", + "http://www.w3.org/1999/02/22-rdf-syntax-ns#": "rdf", + "http://schemas.xmlsoap.org/wsdl/": "wsdl", + # xml schema + "http://www.w3.org/2001/XMLSchema": "xs", + "http://www.w3.org/2001/XMLSchema-instance": "xsi", + # dublic core + "http://purl.org/dc/elements/1.1/": "dc", +} + + +def _raise_serialization_error(text): + raise TypeError( + "cannot serialize %r (type %s)" % (text, type(text).__name__) + ) + +def _encode(text, encoding): + try: + return text.encode(encoding, "xmlcharrefreplace") + except (TypeError, AttributeError): + _raise_serialization_error(text) + +def _escape_cdata(text): + # escape character data + try: + # it's worth avoiding do-nothing calls for strings that are + # shorter than 500 character, or so. assume that's, by far, + # the most common case in most applications. + if "&" in text: + text = text.replace("&", "&") + if "<" in text: + text = text.replace("<", "<") + if ">" in text: + text = text.replace(">", ">") + return text + except (TypeError, AttributeError): + _raise_serialization_error(text) + + +def _escape_attrib(text): + # escape attribute value + try: + if "&" in text: + text = text.replace("&", "&") + if "<" in text: + text = text.replace("<", "<") + if ">" in text: + text = text.replace(">", ">") + if "\"" in text: + text = text.replace("\"", """) + if "\n" in text: + text = text.replace("\n", " ") + return text + except (TypeError, AttributeError): + _raise_serialization_error(text) + +def _escape_attrib_html(text): + # escape attribute value + try: + if "&" in text: + text = text.replace("&", "&") + if "<" in text: + text = text.replace("<", "<") + if ">" in text: + text = text.replace(">", ">") + if "\"" in text: + text = text.replace("\"", """) + return text + except (TypeError, AttributeError): + _raise_serialization_error(text) + + +def _serialize_html(write, elem, qnames, namespaces, format): + tag = elem.tag + text = elem.text + if tag is Comment: + write("<!--%s-->" % _escape_cdata(text)) + elif tag is ProcessingInstruction: + write("<?%s?>" % _escape_cdata(text)) + else: + tag = qnames[tag] + if tag is None: + if text: + write(_escape_cdata(text)) + for e in elem: + _serialize_html(write, e, qnames, None, format) + else: + write("<" + tag) + items = elem.items() + if items or namespaces: + items.sort() # lexical order + for k, v in items: + if isinstance(k, QName): + k = k.text + if isinstance(v, QName): + v = qnames[v.text] + else: + v = _escape_attrib_html(v) + if qnames[k] == v and format == 'html': + # handle boolean attributes + write(" %s" % v) + else: + write(" %s=\"%s\"" % (qnames[k], v)) + if namespaces: + items = namespaces.items() + items.sort(key=lambda x: x[1]) # sort on prefix + for v, k in items: + if k: + k = ":" + k + write(" xmlns%s=\"%s\"" % (k, _escape_attrib(v))) + if format == "xhtml" and tag in HTML_EMPTY: + write(" />") + else: + write(">") + tag = tag.lower() + if text: + if tag == "script" or tag == "style": + write(text) + else: + write(_escape_cdata(text)) + for e in elem: + _serialize_html(write, e, qnames, None, format) + if tag not in HTML_EMPTY: + write("</" + tag + ">") + if elem.tail: + write(_escape_cdata(elem.tail)) + +def _write_html(root, + encoding=None, + default_namespace=None, + format="html"): + assert root is not None + data = [] + write = data.append + qnames, namespaces = _namespaces(root, default_namespace) + _serialize_html(write, root, qnames, namespaces, format) + if encoding is None: + return "".join(data) + else: + return _encode("".join(data)) + + +# -------------------------------------------------------------------- +# serialization support + +def _namespaces(elem, default_namespace=None): + # identify namespaces used in this tree + + # maps qnames to *encoded* prefix:local names + qnames = {None: None} + + # maps uri:s to prefixes + namespaces = {} + if default_namespace: + namespaces[default_namespace] = "" + + def add_qname(qname): + # calculate serialized qname representation + try: + if qname[:1] == "{": + uri, tag = qname[1:].split("}", 1) + prefix = namespaces.get(uri) + if prefix is None: + prefix = _namespace_map.get(uri) + if prefix is None: + prefix = "ns%d" % len(namespaces) + if prefix != "xml": + namespaces[uri] = prefix + if prefix: + qnames[qname] = "%s:%s" % (prefix, tag) + else: + qnames[qname] = tag # default element + else: + if default_namespace: + raise ValueError( + "cannot use non-qualified names with " + "default_namespace option" + ) + qnames[qname] = qname + except TypeError: + _raise_serialization_error(qname) + + # populate qname and namespaces table + try: + iterate = elem.iter + except AttributeError: + iterate = elem.getiterator # cET compatibility + for elem in iterate(): + tag = elem.tag + if isinstance(tag, QName) and tag.text not in qnames: + add_qname(tag.text) + elif isinstance(tag, util.string_type): + if tag not in qnames: + add_qname(tag) + elif tag is not None and tag is not Comment and tag is not PI: + _raise_serialization_error(tag) + for key, value in elem.items(): + if isinstance(key, QName): + key = key.text + if key not in qnames: + add_qname(key) + if isinstance(value, QName) and value.text not in qnames: + add_qname(value.text) + text = elem.text + if isinstance(text, QName) and text.text not in qnames: + add_qname(text.text) + return qnames, namespaces + +def to_html_string(element): + return _write_html(ElementTree(element).getroot(), format="html") + +def to_xhtml_string(element): + return _write_html(ElementTree(element).getroot(), format="xhtml") diff --git a/third_party/markdown/treeprocessors.py b/third_party/markdown/treeprocessors.py new file mode 100644 index 0000000..e6d3dc93 --- /dev/null +++ b/third_party/markdown/treeprocessors.py @@ -0,0 +1,360 @@ +from __future__ import unicode_literals +from __future__ import absolute_import +from . import util +from . import odict +from . import inlinepatterns + + +def build_treeprocessors(md_instance, **kwargs): + """ Build the default treeprocessors for Markdown. """ + treeprocessors = odict.OrderedDict() + treeprocessors["inline"] = InlineProcessor(md_instance) + treeprocessors["prettify"] = PrettifyTreeprocessor(md_instance) + return treeprocessors + + +def isString(s): + """ Check if it's string """ + if not isinstance(s, util.AtomicString): + return isinstance(s, util.string_type) + return False + + +class Treeprocessor(util.Processor): + """ + Treeprocessors are run on the ElementTree object before serialization. + + Each Treeprocessor implements a "run" method that takes a pointer to an + ElementTree, modifies it as necessary and returns an ElementTree + object. + + Treeprocessors must extend markdown.Treeprocessor. + + """ + def run(self, root): + """ + Subclasses of Treeprocessor should implement a `run` method, which + takes a root ElementTree. This method can return another ElementTree + object, and the existing root ElementTree will be replaced, or it can + modify the current tree and return None. + """ + pass + + +class InlineProcessor(Treeprocessor): + """ + A Treeprocessor that traverses a tree, applying inline patterns. + """ + + def __init__(self, md): + self.__placeholder_prefix = util.INLINE_PLACEHOLDER_PREFIX + self.__placeholder_suffix = util.ETX + self.__placeholder_length = 4 + len(self.__placeholder_prefix) \ + + len(self.__placeholder_suffix) + self.__placeholder_re = util.INLINE_PLACEHOLDER_RE + self.markdown = md + + def __makePlaceholder(self, type): + """ Generate a placeholder """ + id = "%04d" % len(self.stashed_nodes) + hash = util.INLINE_PLACEHOLDER % id + return hash, id + + def __findPlaceholder(self, data, index): + """ + Extract id from data string, start from index + + Keyword arguments: + + * data: string + * index: index, from which we start search + + Returns: placeholder id and string index, after the found placeholder. + + """ + m = self.__placeholder_re.search(data, index) + if m: + return m.group(1), m.end() + else: + return None, index + 1 + + def __stashNode(self, node, type): + """ Add node to stash """ + placeholder, id = self.__makePlaceholder(type) + self.stashed_nodes[id] = node + return placeholder + + def __handleInline(self, data, patternIndex=0): + """ + Process string with inline patterns and replace it + with placeholders + + Keyword arguments: + + * data: A line of Markdown text + * patternIndex: The index of the inlinePattern to start with + + Returns: String with placeholders. + + """ + if not isinstance(data, util.AtomicString): + startIndex = 0 + while patternIndex < len(self.markdown.inlinePatterns): + data, matched, startIndex = self.__applyPattern( + self.markdown.inlinePatterns.value_for_index(patternIndex), + data, patternIndex, startIndex) + if not matched: + patternIndex += 1 + return data + + def __processElementText(self, node, subnode, isText=True): + """ + Process placeholders in Element.text or Element.tail + of Elements popped from self.stashed_nodes. + + Keywords arguments: + + * node: parent node + * subnode: processing node + * isText: bool variable, True - it's text, False - it's tail + + Returns: None + + """ + if isText: + text = subnode.text + subnode.text = None + else: + text = subnode.tail + subnode.tail = None + + childResult = self.__processPlaceholders(text, subnode) + + if not isText and node is not subnode: + pos = node.getchildren().index(subnode) + node.remove(subnode) + else: + pos = 0 + + childResult.reverse() + for newChild in childResult: + node.insert(pos, newChild) + + def __processPlaceholders(self, data, parent): + """ + Process string with placeholders and generate ElementTree tree. + + Keyword arguments: + + * data: string with placeholders instead of ElementTree elements. + * parent: Element, which contains processing inline data + + Returns: list with ElementTree elements with applied inline patterns. + + """ + def linkText(text): + if text: + if result: + if result[-1].tail: + result[-1].tail += text + else: + result[-1].tail = text + else: + if parent.text: + parent.text += text + else: + parent.text = text + result = [] + strartIndex = 0 + while data: + index = data.find(self.__placeholder_prefix, strartIndex) + if index != -1: + id, phEndIndex = self.__findPlaceholder(data, index) + + if id in self.stashed_nodes: + node = self.stashed_nodes.get(id) + + if index > 0: + text = data[strartIndex:index] + linkText(text) + + if not isString(node): # it's Element + for child in [node] + node.getchildren(): + if child.tail: + if child.tail.strip(): + self.__processElementText(node, child,False) + if child.text: + if child.text.strip(): + self.__processElementText(child, child) + else: # it's just a string + linkText(node) + strartIndex = phEndIndex + continue + + strartIndex = phEndIndex + result.append(node) + + else: # wrong placeholder + end = index + len(self.__placeholder_prefix) + linkText(data[strartIndex:end]) + strartIndex = end + else: + text = data[strartIndex:] + if isinstance(data, util.AtomicString): + # We don't want to loose the AtomicString + text = util.AtomicString(text) + linkText(text) + data = "" + + return result + + def __applyPattern(self, pattern, data, patternIndex, startIndex=0): + """ + Check if the line fits the pattern, create the necessary + elements, add it to stashed_nodes. + + Keyword arguments: + + * data: the text to be processed + * pattern: the pattern to be checked + * patternIndex: index of current pattern + * startIndex: string index, from which we start searching + + Returns: String with placeholders instead of ElementTree elements. + + """ + match = pattern.getCompiledRegExp().match(data[startIndex:]) + leftData = data[:startIndex] + + if not match: + return data, False, 0 + + node = pattern.handleMatch(match) + + if node is None: + return data, True, len(leftData)+match.span(len(match.groups()))[0] + + if not isString(node): + if not isinstance(node.text, util.AtomicString): + # We need to process current node too + for child in [node] + node.getchildren(): + if not isString(node): + if child.text: + child.text = self.__handleInline(child.text, + patternIndex + 1) + if child.tail: + child.tail = self.__handleInline(child.tail, + patternIndex) + + placeholder = self.__stashNode(node, pattern.type()) + + return "%s%s%s%s" % (leftData, + match.group(1), + placeholder, match.groups()[-1]), True, 0 + + def run(self, tree): + """Apply inline patterns to a parsed Markdown tree. + + Iterate over ElementTree, find elements with inline tag, apply inline + patterns and append newly created Elements to tree. If you don't + want to process your data with inline paterns, instead of normal string, + use subclass AtomicString: + + node.text = markdown.AtomicString("This will not be processed.") + + Arguments: + + * tree: ElementTree object, representing Markdown tree. + + Returns: ElementTree object with applied inline patterns. + + """ + self.stashed_nodes = {} + + stack = [tree] + + while stack: + currElement = stack.pop() + insertQueue = [] + for child in currElement.getchildren(): + if child.text and not isinstance(child.text, util.AtomicString): + text = child.text + child.text = None + lst = self.__processPlaceholders(self.__handleInline( + text), child) + stack += lst + insertQueue.append((child, lst)) + if child.tail: + tail = self.__handleInline(child.tail) + dumby = util.etree.Element('d') + tailResult = self.__processPlaceholders(tail, dumby) + if dumby.text: + child.tail = dumby.text + else: + child.tail = None + pos = currElement.getchildren().index(child) + 1 + tailResult.reverse() + for newChild in tailResult: + currElement.insert(pos, newChild) + if child.getchildren(): + stack.append(child) + + for element, lst in insertQueue: + if self.markdown.enable_attributes: + if element.text and isString(element.text): + element.text = \ + inlinepatterns.handleAttributes(element.text, + element) + i = 0 + for newChild in lst: + if self.markdown.enable_attributes: + # Processing attributes + if newChild.tail and isString(newChild.tail): + newChild.tail = \ + inlinepatterns.handleAttributes(newChild.tail, + element) + if newChild.text and isString(newChild.text): + newChild.text = \ + inlinepatterns.handleAttributes(newChild.text, + newChild) + element.insert(i, newChild) + i += 1 + return tree + + +class PrettifyTreeprocessor(Treeprocessor): + """ Add linebreaks to the html document. """ + + def _prettifyETree(self, elem): + """ Recursively add linebreaks to ElementTree children. """ + + i = "\n" + if util.isBlockLevel(elem.tag) and elem.tag not in ['code', 'pre']: + if (not elem.text or not elem.text.strip()) \ + and len(elem) and util.isBlockLevel(elem[0].tag): + elem.text = i + for e in elem: + if util.isBlockLevel(e.tag): + self._prettifyETree(e) + if not elem.tail or not elem.tail.strip(): + elem.tail = i + if not elem.tail or not elem.tail.strip(): + elem.tail = i + + def run(self, root): + """ Add linebreaks to ElementTree root object. """ + + self._prettifyETree(root) + # Do <br />'s seperately as they are often in the middle of + # inline content and missed by _prettifyETree. + brs = root.getiterator('br') + for br in brs: + if not br.tail or not br.tail.strip(): + br.tail = '\n' + else: + br.tail = '\n%s' % br.tail + # Clean up extra empty lines at end of code blocks. + pres = root.getiterator('pre') + for pre in pres: + if len(pre) and pre[0].tag == 'code': + pre[0].text = pre[0].text.rstrip() + '\n' diff --git a/third_party/markdown/util.py b/third_party/markdown/util.py new file mode 100644 index 0000000..1036197 --- /dev/null +++ b/third_party/markdown/util.py @@ -0,0 +1,136 @@ +# -*- 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) + |