Major refactor, bordering on rewrite
- Rename the plugin (md_yaml -> md_metayaml) - Rework directory structure for easier integration into Pelican - Change markdown extension libary to a submodule - Remove ugly path hacks - Make the reader do less work (leverage the MarkdownReader class)
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pR0Ps
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3
.gitmodules
vendored
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3
.gitmodules
vendored
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[submodule "markdown_metayaml"]
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path = markdown_metayaml
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url = git@github.com:pR0Ps/markdown_metayaml.git
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1
__init__.py
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__init__.py
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from .md_metayaml import *
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1
markdown_metayaml
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markdown_metayaml
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Subproject commit 201a20e1c3cf6f89cb7d38fbb2a7da3f81923091
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29
md_metayaml.py
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md_metayaml.py
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from pelican import signals
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from pelican.readers import MarkdownReader
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from .markdown_metayaml.meta_yaml import MetaYamlExtension
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class MarkdownYAMLReader(MarkdownReader):
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"""Reader for Markdown files with YAML metadata"""
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def __init__(self, *args, **kwargs):
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super(MarkdownYAMLReader, self).__init__(*args, **kwargs)
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self.extensions.append(MetaYamlExtension())
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def _parse_metadata(self, meta):
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"""Return the dict containing document metadata"""
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# MarkdownReader _parse_metadata() expects a list of length 1
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# containing a string of comma-seperated values for authors and tags
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for x in ("tags", "authors"):
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if x in meta:
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meta[x] = [",".join(meta[x])]
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return super(MarkdownYAMLReader, self)._parse_metadata(meta)
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def add_reader(readers):
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for k in MarkdownYAMLReader.file_extensions:
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readers.reader_classes[k] = MarkdownYAMLReader
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def register():
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signals.readers_init.connect(add_reader)
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@ -1 +0,0 @@
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from .md_yaml import *
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import sys
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import os
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from pelican import signals
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from pelican.readers import BaseReader
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from pelican.utils import pelican_open
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try:
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from markdown import Markdown
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except ImportError:
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Markdown = False
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class MarkdownYAMLReader(BaseReader):
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"""Reader for Markdown files with YAML metadata"""
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enabled = bool(Markdown)
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file_extensions = ['md', 'markdown', 'mkd', 'mdown']
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def __init__(self, *args, **kwargs):
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super(MarkdownYAMLReader, self).__init__(*args, **kwargs)
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self.settings = args[0]
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self.extensions = list(self.settings['MD_EXTENSIONS'])
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if 'meta_yaml' not in self.extensions:
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self.extensions.append('meta_yaml')
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def _parse_metadata(self, meta):
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"""Return the dict containing document metadata"""
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output = {}
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for name, value in meta.items():
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name = name.lower()
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output[name] = value
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return output
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def read(self, source_path):
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"""Parse content and metadata of Markdown files with YAML metadata"""
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self.__set_plugin_path()
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self._md = Markdown(extensions=self.extensions)
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with pelican_open(source_path) as text:
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content = self._md.convert(text)
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metadata = self._parse_metadata(self._md.Meta)
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self.__unset_plugin_path()
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return content, metadata
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def __set_plugin_path(self):
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self.__sys_path_old = sys.path[:]
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for pluginpath in self.settings['PLUGIN_PATHS']:
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sys.path.insert(0, pluginpath)
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sys.path.insert(0, os.path.join(pluginpath, 'md_yaml'))
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def __unset_plugin_path(self):
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sys.path = self.__sys_path_old
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def add_reader(readers):
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for k in MarkdownYAMLReader.file_extensions:
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readers.reader_classes[k] = MarkdownYAMLReader
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def register():
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signals.readers_init.connect(add_reader)
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@ -1,30 +0,0 @@
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Copyright 2007, 2008 The Python Markdown Project (v. 1.7 and later)
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Copyright 2004, 2005, 2006 Yuri Takhteyev (v. 0.2-1.6b)
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Copyright 2004 Manfred Stienstra (the original version)
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of the <organization> nor the
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names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE PYTHON MARKDOWN PROJECT ''AS IS'' AND ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL ANY CONTRIBUTORS TO THE PYTHON MARKDOWN PROJECT
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BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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# -*- coding: utf-8 -*-
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from mdx_meta_yaml.extension import MetaYamlExtension
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def makeExtension(configs=None):
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if isinstance(configs, list):
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configs = dict(configs)
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elif configs is None:
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configs = {}
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return MetaYamlExtension(configs=configs)
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"""
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# YAML Meta Data Extension for [Python-Markdown](https://github.com/waylan/Python-Markdown)
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This extension adds YAML meta data handling to markdown.
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As in the original, meta data is parsed but not used in processing.
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(YAML meta data is used e.g. by [pandoc](http://johnmacfarlane.net/pandoc/))
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Dependencies: [PyYAML](http://pyyaml.org/)
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Basic Usage:
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>>> import markdown
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>>> text = '''---
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... Title: Test Doc.
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... Author: Waylan Limberg
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... Blank_Data:
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... ...
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...
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... The body. This is paragraph one.
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... '''
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>>> md = markdown.Markdown(['meta_yaml'])
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>>> print(md.convert(text))
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<p>The body. This is paragraph one.</p>
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>>> print(md.Meta) # doctest: +SKIP
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{'blank_data': [''], 'author': ['Waylan Limberg'], 'title': ['Test Doc.']}
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Make sure text without Meta Data still works (markdown < 1.6b returns a <p>).
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>>> text = ' Some Code - not extra lines of meta data.'
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>>> md = markdown.Markdown(['meta_yaml'])
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>>> print(md.convert(text))
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<pre><code>Some Code - not extra lines of meta data.
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</code></pre>
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>>> md.Meta
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{}
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Copyright 2014 Bernhard Fisseni
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Based on the meta data extension included with Python-Markdown,
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Copyright 2007-2008 [Waylan Limberg](http://achinghead.com).
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License: BSD (see LICENSE.md for details)
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"""
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from __future__ import absolute_import
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from __future__ import unicode_literals
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from markdown import Extension
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from markdown.preprocessors import Preprocessor
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import yaml
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# from yaml.scanner import ScannerError
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class MetaYamlExtension (Extension):
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"""Extension for parsing YAML-Metadata with Python-Markdown."""
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def extendMarkdown(self, md, md_globals):
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"""Add MetaYamlPreprocessor to Markdown instance."""
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md.preprocessors.add('meta_yaml', MetaYamlPreprocessor(md), "_begin")
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class MetaYamlPreprocessor(Preprocessor):
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"""
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Get Meta-Data.
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A YAML block is delimited by
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- a line '---' at the start
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- and a '...' or '---' line
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at the end.
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"""
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def run(self, lines):
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""" Parse Meta-Data and store in Markdown.Meta. """
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in_yaml = False
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yaml_block = []
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line = lines.pop(0)
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if line == '---':
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in_yaml = True
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else:
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lines.insert(0, line)
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while in_yaml and lines:
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line = lines.pop(0)
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if line == '---' or line == '...':
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break
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yaml_block.append(line)
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if yaml_block:
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yaml_block = "\n".join(yaml_block)
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meta = yaml.load(yaml_block)
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self.markdown.Meta = meta
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return lines
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