mirror of
https://github.com/encode/django-rest-framework.git
synced 2024-11-11 04:07:39 +03:00
51 lines
1.9 KiB
Python
51 lines
1.9 KiB
Python
|
"""If python-markdown is installed expose an apply_markdown(text) function,
|
||
|
|
to convert markeddown text into html. Otherwise just set apply_markdown to None.
|
||
|
|
|
||
|
|
See: http://www.freewisdom.org/projects/python-markdown/
|
||
|
|
"""
|
||
|
|
|
||
|
|
__all__ = ['apply_markdown']
|
||
|
|
|
||
|
|
try:
|
||
|
|
import markdown
|
||
|
|
import re
|
||
|
|
|
||
|
|
class CustomSetextHeaderProcessor(markdown.blockprocessors.BlockProcessor):
|
||
|
|
"""Override markdown's SetextHeaderProcessor, so that ==== headers are <h2> and ---- headers are <h3>.
|
||
|
|
|
||
|
|
We use <h1> for the resource name."""
|
||
|
|
|
||
|
|
# Detect Setext-style header. Must be first 2 lines of block.
|
||
|
|
RE = re.compile(r'^.*?\n[=-]{3,}', 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 = 2
|
||
|
|
else:
|
||
|
|
level = 3
|
||
|
|
h = markdown.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:]))
|
||
|
|
|
||
|
|
def apply_markdown(text):
|
||
|
|
"""Simple wrapper around markdown.markdown to apply our CustomSetextHeaderProcessor,
|
||
|
|
and also set the base level of '#' style headers to <h2>."""
|
||
|
|
extensions = ['headerid(level=2)']
|
||
|
|
safe_mode = False,
|
||
|
|
output_format = markdown.DEFAULT_OUTPUT_FORMAT
|
||
|
|
|
||
|
|
md = markdown.Markdown(extensions=markdown.load_extensions(extensions),
|
||
|
|
safe_mode=safe_mode,
|
||
|
|
output_format=output_format)
|
||
|
|
md.parser.blockprocessors['setextheader'] = CustomSetextHeaderProcessor(md.parser)
|
||
|
|
return md.convert(text)
|
||
|
|
|
||
|
|
except:
|
||
|
|
apply_markdown = None
|