markdown_it.helpers.parse_link_title 源代码

"""Parse link title
"""
from ..common.utils import unescapeAll, charCodeAt, stripEscape


class _Result:
    __slots__ = ("ok", "pos", "lines", "str")

    def __init__(self):
        self.ok = False
        self.pos = 0
        self.lines = 0
        self.str = ""

    def __str__(self):
        return self.str


[文档]def parseLinkTitle(string: str, pos: int, maximum: int) -> _Result: lines = 0 start = pos result = _Result() if pos >= maximum: return result marker = charCodeAt(string, pos) # /* " */ /* ' */ /* ( */ if marker != 0x22 and marker != 0x27 and marker != 0x28: return result pos += 1 # if opening marker is "(", switch it to closing marker ")" if marker == 0x28: marker = 0x29 while pos < maximum: code = charCodeAt(string, pos) if code == marker: title = string[start + 1 : pos] title = unescapeAll(stripEscape(title)) result.pos = pos + 1 result.lines = lines result.str = title result.ok = True return result elif code == 0x28 and marker == 0x29: # /* ( */ /* ) */ return result elif code == 0x0A: lines += 1 elif code == 0x5C and pos + 1 < maximum: # /* \ */ pos += 1 if charCodeAt(string, pos) == 0x0A: lines += 1 pos += 1 return result