File size: 5,722 Bytes
2e92f3b | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 | import re
from typing import (
TYPE_CHECKING,
Any,
Dict,
List,
Match,
Optional,
Tuple,
Union,
)
from ..helpers import PREVENT_BACKSLASH
if TYPE_CHECKING:
from ..block_parser import BlockParser
from ..core import BaseRenderer, BlockState
from ..markdown import Markdown
# 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: "BlockParser", m: Match[str], state: "BlockState") -> Optional[int]:
pos = m.end()
header = m.group("table_head")
align = m.group("table_align")
thead, aligns = _process_thead(header, align)
if not thead:
return None
assert aligns is not None
rows = []
body = m.group("table_body")
for text in body.splitlines():
m2 = TABLE_CELL.match(text)
if not m2: # pragma: no cover
return None
row = _process_row(m2.group(1), aligns)
if not row:
return None
rows.append(row)
children = [thead, {"type": "table_body", "children": rows}]
state.append_token({"type": "table", "children": children})
return pos
def parse_nptable(block: "BlockParser", m: Match[str], state: "BlockState") -> Optional[int]:
header = m.group("nptable_head")
align = m.group("nptable_align")
thead, aligns = _process_thead(header, align)
if not thead:
return None
assert aligns is not None
rows = []
body = m.group("nptable_body")
for text in body.splitlines():
row = _process_row(text, aligns)
if not row:
return None
rows.append(row)
children = [thead, {"type": "table_body", "children": rows}]
state.append_token({"type": "table", "children": children})
return m.end()
def _process_thead(header: str, align: str) -> Union[Tuple[None, None], Tuple[Dict[str, Any], List[str]]]:
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: str, aligns: List[str]) -> Optional[Dict[str, Any]]:
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: "BaseRenderer", text: str) -> str:
return "<table>\n" + text + "</table>\n"
def render_table_head(renderer: "BaseRenderer", text: str) -> str:
return "<thead>\n<tr>\n" + text + "</tr>\n</thead>\n"
def render_table_body(renderer: "BaseRenderer", text: str) -> str:
return "<tbody>\n" + text + "</tbody>\n"
def render_table_row(renderer: "BaseRenderer", text: str) -> str:
return "<tr>\n" + text + "</tr>\n"
def render_table_cell(renderer: "BaseRenderer", text: str, align: Optional[str] = None, head: bool = False) -> str:
if head:
tag = "th"
else:
tag = "td"
html = " <" + tag
if align:
html += ' style="text-align:' + align + '"'
return html + ">" + text + "</" + tag + ">\n"
def table(md: "Markdown") -> None:
"""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: "Markdown") -> None:
"""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: "Markdown") -> None:
"""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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