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)

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "markdown_metayaml"]
+	path = markdown_metayaml
+	url = git@github.com:pR0Ps/markdown_metayaml.git

__init__.py

@@ -0,0 +1 @@
+from .md_metayaml import *

markdown_metayaml

@@ -0,0 +1 @@
+Subproject commit 201a20e1c3cf6f89cb7d38fbb2a7da3f81923091

md_metayaml.py

@@ -0,0 +1,29 @@
+from pelican import signals
+from pelican.readers import MarkdownReader
+
+from .markdown_metayaml.meta_yaml import MetaYamlExtension
+
+class MarkdownYAMLReader(MarkdownReader):
+    """Reader for Markdown files with YAML metadata"""
+
+    def __init__(self, *args, **kwargs):
+        super(MarkdownYAMLReader, self).__init__(*args, **kwargs)
+        self.extensions.append(MetaYamlExtension())
+
+    def _parse_metadata(self, meta):
+        """Return the dict containing document metadata"""
+
+        # MarkdownReader _parse_metadata() expects a list of length 1
+        # containing a string of comma-seperated values for authors and tags
+        for x in ("tags", "authors"):
+            if x in meta:
+                meta[x] = [",".join(meta[x])]
+
+        return super(MarkdownYAMLReader, self)._parse_metadata(meta)
+
+def add_reader(readers):
+    for k in MarkdownYAMLReader.file_extensions:
+        readers.reader_classes[k] = MarkdownYAMLReader
+
+def register():
+    signals.readers_init.connect(add_reader)

md_yaml/__init__.py

@@ -1 +0,0 @@
-from .md_yaml import *

md_yaml/md_yaml.py

@@ -1,63 +0,0 @@
-import sys
-import os
-
-from pelican import signals
-from pelican.readers import BaseReader
-from pelican.utils import pelican_open
-
-try:
-	from markdown import Markdown
-except ImportError:
-	Markdown = False
-
-class MarkdownYAMLReader(BaseReader):
-	"""Reader for Markdown files with YAML metadata"""
-
-	enabled = bool(Markdown)
-	file_extensions = ['md', 'markdown', 'mkd', 'mdown']
-
-	def __init__(self, *args, **kwargs):
-		super(MarkdownYAMLReader, self).__init__(*args, **kwargs)
-		self.settings = args[0]
-		self.extensions = list(self.settings['MD_EXTENSIONS'])
-		if 'meta_yaml' not in self.extensions:
-			self.extensions.append('meta_yaml')
-
-	def _parse_metadata(self, meta):
-		"""Return the dict containing document metadata"""
-
-		output = {}
-		for name, value in meta.items():
-			name = name.lower()
-			output[name] = value
-		return output
-
-	def read(self, source_path):
-		"""Parse content and metadata of Markdown files with YAML metadata"""
-
-		self.__set_plugin_path()
-
-		self._md = Markdown(extensions=self.extensions)
-		with pelican_open(source_path) as text:
-			content = self._md.convert(text)
-		metadata = self._parse_metadata(self._md.Meta)
-
-		self.__unset_plugin_path()
-
-		return content, metadata
-
-	def __set_plugin_path(self):
-		self.__sys_path_old = sys.path[:]
-		for pluginpath in self.settings['PLUGIN_PATHS']:
-			sys.path.insert(0, pluginpath)
-			sys.path.insert(0, os.path.join(pluginpath, 'md_yaml'))
-
-	def __unset_plugin_path(self):
-		sys.path = self.__sys_path_old
-
-def add_reader(readers):
-	for k in MarkdownYAMLReader.file_extensions:
-		readers.reader_classes[k] = MarkdownYAMLReader
-
-def register():
-	signals.readers_init.connect(add_reader)

md_yaml/mdx_meta_yaml/LICENSE.md

@@ -1,30 +0,0 @@
-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.
-

md_yaml/mdx_meta_yaml/__init__.py

@@ -1,10 +0,0 @@
-# -*- coding: utf-8 -*-
-
-from mdx_meta_yaml.extension import MetaYamlExtension
-
-def makeExtension(configs=None):
-	if isinstance(configs, list):
-		configs = dict(configs)
-        elif configs is None:
-		configs  = {}
-	return MetaYamlExtension(configs=configs)

md_yaml/mdx_meta_yaml/extension.py

@@ -1,100 +0,0 @@
-"""
-# YAML Meta Data Extension for [Python-Markdown](https://github.com/waylan/Python-Markdown)
-
-This extension adds YAML meta data handling to markdown.
-
-As in the original, meta data is parsed but not used in processing.
-
-(YAML meta data is used e.g. by [pandoc](http://johnmacfarlane.net/pandoc/))
-
-Dependencies: [PyYAML](http://pyyaml.org/)
-
-
-Basic Usage:
-
-	>>> import markdown
-	>>> text = '''---
-	... Title: Test Doc.
-	... Author: Waylan Limberg
-	... Blank_Data:
-	... ...
-	...
-	... The body. This is paragraph one.
-	... '''
-	>>> md = markdown.Markdown(['meta_yaml'])
-	>>> print(md.convert(text))
-	<p>The body. This is paragraph one.</p>
-	>>> print(md.Meta) # doctest: +SKIP
-	{'blank_data': [''], 'author': ['Waylan Limberg'], 'title': ['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_yaml'])
-	>>> print(md.convert(text))
-	<pre><code>Some Code - not extra lines of meta data.
-	</code></pre>
-	>>> md.Meta
-	{}
-
-
-Copyright 2014 Bernhard Fisseni
-
-Based on the meta data extension included with Python-Markdown,
-Copyright 2007-2008 [Waylan Limberg](http://achinghead.com).
-
-License: BSD (see LICENSE.md for details)
-
-"""
-
-from __future__ import absolute_import
-from __future__ import unicode_literals
-from markdown import Extension
-from markdown.preprocessors import Preprocessor
-import yaml
-# from yaml.scanner import ScannerError
-
-
-class MetaYamlExtension (Extension):
-	"""Extension for parsing YAML-Metadata with Python-Markdown."""
-
-	def extendMarkdown(self, md, md_globals):
-		"""Add MetaYamlPreprocessor to Markdown instance."""
-
-		md.preprocessors.add('meta_yaml', MetaYamlPreprocessor(md), "_begin")
-
-
-class MetaYamlPreprocessor(Preprocessor):
-	"""
-	Get Meta-Data.
-
-	A YAML block is delimited by
-	- a line '---' at the start
-	- and a '...' or '---' line
-	at the end.
-	"""
-
-	def run(self, lines):
-		""" Parse Meta-Data and store in Markdown.Meta. """
-
-		in_yaml = False
-		yaml_block = []
-		line = lines.pop(0)
-
-		if line == '---':
-			in_yaml = True
-		else:
-			lines.insert(0, line)
-
-		while in_yaml and lines:
-			line = lines.pop(0)
-			if line == '---' or line == '...':
-				break
-			yaml_block.append(line)
-
-		if yaml_block:
-			yaml_block = "\n".join(yaml_block)
-			meta = yaml.load(yaml_block)
-			self.markdown.Meta = meta
-
-		return lines