Revert of Check in a simple pure-python based Markdown previewer.

third_party/Python-Markdown/markdown/extensions/tables.py

-"""
-Tables Extension for Python-Markdown
-====================================
-
-Added parsing of tables to Python-Markdown.
-
-See <https://pythonhosted.org/Markdown/extensions/tables.html>
-for documentation.
-
-Original code Copyright 2009 [Waylan Limberg](http://achinghead.com)
-
-All changes Copyright 2008-2014 The Python Markdown Project
-
-License: [BSD](http://www.opensource.org/licenses/bsd-license.php)
-
-"""
-
-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) > 1 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 = [] if len(block) < 3 else 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:  # pragma: no cover
-                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(*args, **kwargs):
-    return TableExtension(*args, **kwargs)