| """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 |
| |
| |
| 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 |
