blob: 2152df7151b16a00e9da30e6fcbcf2a2f3ac468a [file] [log] [blame]
# GFM table, non-standard
import re
from .state_block import StateBlock
from ..common.utils import isSpace, charCodeAt
headerLineRe = re.compile(r"^:?-+:?$")
enclosingPipesRe = re.compile(r"^\||\|$")
def getLine(state: StateBlock, line: int):
pos = state.bMarks[line] + state.blkIndent
maximum = state.eMarks[line]
# return state.src.substr(pos, max - pos)
return state.src[pos:maximum]
def escapedSplit(string):
result = []
pos = 0
max = len(string)
escapes = 0
lastPos = 0
backTicked = False
lastBackTick = 0
ch = charCodeAt(string, pos)
while pos < max:
if ch == 0x60: # /* ` */
if backTicked:
# make \` close code sequence, but not open it;
# the reason is: `\` is correct code block
backTicked = False
lastBackTick = pos
elif escapes % 2 == 0:
backTicked = True
lastBackTick = pos
# /* | */
elif ch == 0x7C and (escapes % 2 == 0) and not backTicked:
result.append(string[lastPos:pos])
lastPos = pos + 1
if ch == 0x5C: # /* \ */
escapes += 1
else:
escapes = 0
pos += 1
# If there was an un-closed backtick, go back to just after
# the last backtick, but as if it was a normal character
if pos == max and backTicked:
backTicked = False
pos = lastBackTick + 1
ch = charCodeAt(string, pos)
result.append(string[lastPos:])
return result
def table(state: StateBlock, startLine: int, endLine: int, silent: bool):
# should have at least two lines
if startLine + 2 > endLine:
return False
nextLine = startLine + 1
if state.sCount[nextLine] < state.blkIndent:
return False
# if it's indented more than 3 spaces, it should be a code block
if state.sCount[nextLine] - state.blkIndent >= 4:
return False
# first character of the second line should be '|', '-', ':',
# and no other characters are allowed but spaces;
# basically, this is the equivalent of /^[-:|][-:|\s]*$/ regexp
pos = state.bMarks[nextLine] + state.tShift[nextLine]
if pos >= state.eMarks[nextLine]:
return False
ch = state.srcCharCode[pos]
pos += 1
# /* | */ /* - */ /* : */
if ch != 0x7C and ch != 0x2D and ch != 0x3A:
return False
while pos < state.eMarks[nextLine]:
ch = state.srcCharCode[pos]
# /* | */ /* - */ /* : */
if ch != 0x7C and ch != 0x2D and ch != 0x3A and not isSpace(ch):
return False
pos += 1
lineText = getLine(state, startLine + 1)
columns = lineText.split("|")
aligns = []
for i in range(len(columns)):
t = columns[i].strip()
if not t:
# allow empty columns before and after table, but not in between columns;
# e.g. allow ` |---| `, disallow ` ---||--- `
if i == 0 or i == len(columns) - 1:
continue
else:
return False
if not headerLineRe.search(t):
return False
if charCodeAt(t, len(t) - 1) == 0x3A: # /* : */
# /* : */
aligns.append("center" if charCodeAt(t, 0) == 0x3A else "right")
elif charCodeAt(t, 0) == 0x3A: # /* : */
aligns.append("left")
else:
aligns.append("")
lineText = getLine(state, startLine).strip()
if "|" not in lineText:
return False
if state.sCount[startLine] - state.blkIndent >= 4:
return False
columns = escapedSplit(enclosingPipesRe.sub("", lineText))
# header row will define an amount of columns in the entire table,
# and align row shouldn't be smaller than that (the rest of the rows can)
columnCount = len(columns)
if columnCount > len(aligns):
return False
if silent:
return True
token = state.push("table_open", "table", 1)
token.map = tableLines = [startLine, 0]
token = state.push("thead_open", "thead", 1)
token.map = [startLine, startLine + 1]
token = state.push("tr_open", "tr", 1)
token.map = [startLine, startLine + 1]
for i in range(len(columns)):
token = state.push("th_open", "th", 1)
token.map = [startLine, startLine + 1]
if aligns[i]:
token.attrs = [["style", "text-align:" + aligns[i]]]
token = state.push("inline", "", 0)
token.content = columns[i].strip()
token.map = [startLine, startLine + 1]
token.children = []
token = state.push("th_close", "th", -1)
token = state.push("tr_close", "tr", -1)
token = state.push("thead_close", "thead", -1)
token = state.push("tbody_open", "tbody", 1)
token.map = tbodyLines = [startLine + 2, 0]
nextLine = startLine + 2
while nextLine < endLine:
if state.sCount[nextLine] < state.blkIndent:
break
lineText = getLine(state, nextLine).strip()
if "|" not in lineText:
break
if state.sCount[nextLine] - state.blkIndent >= 4:
break
columns = escapedSplit(enclosingPipesRe.sub("", lineText))
token = state.push("tr_open", "tr", 1)
for i in range(columnCount):
token = state.push("td_open", "td", 1)
if aligns[i]:
token.attrs = [["style", "text-align:" + aligns[i]]]
token = state.push("inline", "", 0)
try:
token.content = columns[i].strip() if columns[i] else ""
except IndexError:
token.content = ""
token.children = []
token = state.push("td_close", "td", -1)
token = state.push("tr_close", "tr", -1)
nextLine += 1
token = state.push("tbody_close", "tbody", -1)
token = state.push("table_close", "table", -1)
tableLines[1] = tbodyLines[1] = nextLine
state.line = nextLine
return True