forked from github/pelican
70 lines
2.3 KiB
Python
70 lines
2.3 KiB
Python
from docutils import core
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from markdown import Markdown
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import re
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# import the directives to have pygments support
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import rstdirectives
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from pelican.utils import get_date, open
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_METADATAS_FIELDS = {'tags': lambda x: x.split(', '),
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'date': lambda x: get_date(x),
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'category': lambda x: x,
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'author': lambda x: x,
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'status': lambda x:x.strip(),}
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class RstReader(object):
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def _parse_metadata(self, content):
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"""Return the dict containing metadatas"""
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output = {}
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for m in re.compile(':([a-z]+): (.*)\s', re.M).finditer(content):
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name, value = m.group(1).lower(), m.group(2)
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if name in _METADATAS_FIELDS:
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output[name] = _METADATAS_FIELDS[name](value)
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return output
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def read(self, filename):
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"""Parse restructured text"""
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text = open(filename)
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metadatas = self._parse_metadata(text)
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extra_params = {'input_encoding': 'unicode',
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'initial_header_level': '2'}
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rendered_content = core.publish_parts(text, writer_name='html',
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settings_overrides=extra_params)
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title = rendered_content.get('title')
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content = rendered_content.get('body')
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if not metadatas.has_key('title'):
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metadatas['title'] = title
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return content, metadatas
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class MarkdownReader(object):
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def read(self, filename):
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"""Parse content and metadata of markdown files"""
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text = open(filename)
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md = Markdown(extensions = ['meta'])
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content = md.convert(text)
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metadatas = {}
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for name, value in md.Meta.items():
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if name in _METADATAS_FIELDS:
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meta = _METADATAS_FIELDS[name](value[0])
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else:
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meta = value[0]
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metadatas[name.lower()] = meta
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return content, metadatas
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_EXTENSIONS = {'rst': RstReader, 'md': MarkdownReader} # supported formats
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def read_file(filename, fmt=None):
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"""Return a reader object using the given format."""
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if not fmt:
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fmt = filename.split('.')[-1]
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if fmt not in _EXTENSIONS.keys():
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raise TypeError('Pelican does not know how to parse %s' % filename)
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reader = _EXTENSIONS[fmt]()
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return reader.read(filename)
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