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import re
from ..helpers import PREVENT_BACKSLASH
# https://michelf.ca/projects/php-markdown/extra/#table
__all__ = ['table', 'table_in_quote', 'table_in_list']
TABLE_PATTERN = (
r'^ {0,3}\|(?P<table_head>.+)\|[ \t]*\n'
r' {0,3}\|(?P<table_align> *[-:]+[-| :]*)\|[ \t]*\n'
r'(?P<table_body>(?: {0,3}\|.*\|[ \t]*(?:\n|$))*)\n*'
)
NP_TABLE_PATTERN = (
r'^ {0,3}(?P<nptable_head>\S.*\|.*)\n'
r' {0,3}(?P<nptable_align>[-:]+ *\|[-| :]*)\n'
r'(?P<nptable_body>(?:.*\|.*(?:\n|$))*)\n*'
)
TABLE_CELL = re.compile(r'^ {0,3}\|(.+)\|[ \t]*$')
CELL_SPLIT = re.compile(r' *' + PREVENT_BACKSLASH + r'\| *')
ALIGN_CENTER = re.compile(r'^ *:-+: *$')
ALIGN_LEFT = re.compile(r'^ *:-+ *$')
ALIGN_RIGHT = re.compile(r'^ *-+: *$')
def parse_table(block, m, state):
pos = m.end()
header = m.group('table_head')
align = m.group('table_align')
thead, aligns = _process_thead(header, align)
if not thead:
return
rows = []
body = m.group('table_body')
for text in body.splitlines():
m = TABLE_CELL.match(text)
if not m: # pragma: no cover
return
row = _process_row(m.group(1), aligns)
if not row:
return
rows.append(row)
children = [thead, {'type': 'table_body', 'children': rows}]
state.append_token({'type': 'table', 'children': children})
return pos
def parse_nptable(block, m, state):
header = m.group('nptable_head')
align = m.group('nptable_align')
thead, aligns = _process_thead(header, align)
if not thead:
return
rows = []
body = m.group('nptable_body')
for text in body.splitlines():
row = _process_row(text, aligns)
if not row:
return
rows.append(row)
children = [thead, {'type': 'table_body', 'children': rows}]
state.append_token({'type': 'table', 'children': children})
return m.end()
def _process_thead(header, align):
headers = CELL_SPLIT.split(header)
aligns = CELL_SPLIT.split(align)
if len(headers) != len(aligns):
return None, None
for i, v in enumerate(aligns):
if ALIGN_CENTER.match(v):
aligns[i] = 'center'
elif ALIGN_LEFT.match(v):
aligns[i] = 'left'
elif ALIGN_RIGHT.match(v):
aligns[i] = 'right'
else:
aligns[i] = None
children = [
{
'type': 'table_cell',
'text': text.strip(),
'attrs': {'align': aligns[i], 'head': True}
}
for i, text in enumerate(headers)
]
thead = {'type': 'table_head', 'children': children}
return thead, aligns
def _process_row(text, aligns):
cells = CELL_SPLIT.split(text)
if len(cells) != len(aligns):
return None
children = [
{
'type': 'table_cell',
'text': text.strip(),
'attrs': {'align': aligns[i], 'head': False}
}
for i, text in enumerate(cells)
]
return {'type': 'table_row', 'children': children}
def render_table(renderer, text):
return '<table>\n' + text + '</table>\n'
def render_table_head(renderer, text):
return '<thead>\n<tr>\n' + text + '</tr>\n</thead>\n'
def render_table_body(renderer, text):
return '<tbody>\n' + text + '</tbody>\n'
def render_table_row(renderer, text):
return '<tr>\n' + text + '</tr>\n'
def render_table_cell(renderer, text, align=None, head=False):
if head:
tag = 'th'
else:
tag = 'td'
html = ' <' + tag
if align:
html += ' style="text-align:' + align + '"'
return html + '>' + text + '</' + tag + '>\n'
def table(md):
"""A mistune plugin to support table, spec defined at
https://michelf.ca/projects/php-markdown/extra/#table
Here is an example:
.. code-block:: text
First Header | Second Header
------------- | -------------
Content Cell | Content Cell
Content Cell | Content Cell
:param md: Markdown instance
"""
md.block.register('table', TABLE_PATTERN, parse_table, before='paragraph')
md.block.register('nptable', NP_TABLE_PATTERN, parse_nptable, before='paragraph')
if md.renderer and md.renderer.NAME == 'html':
md.renderer.register('table', render_table)
md.renderer.register('table_head', render_table_head)
md.renderer.register('table_body', render_table_body)
md.renderer.register('table_row', render_table_row)
md.renderer.register('table_cell', render_table_cell)
def table_in_quote(md):
"""Enable table plugin in block quotes."""
md.block.insert_rule(md.block.block_quote_rules, 'table', before='paragraph')
md.block.insert_rule(md.block.block_quote_rules, 'nptable', before='paragraph')
def table_in_list(md):
"""Enable table plugin in list."""
md.block.insert_rule(md.block.list_rules, 'table', before='paragraph')
md.block.insert_rule(md.block.list_rules, 'nptable', before='paragraph')
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