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# markdown is released under the BSD license
# 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.
"""
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)
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