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✏️ Editing: parse_link_title.py

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

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

def __init__(self) -> None:
        self.ok = False
        self.pos = 0
        self.lines = 0
        self.str = ""

def __str__(self) -> str:
        return self.str

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(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

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