name : parse_link_destination.py """ Parse link destination """ 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 parseLinkDestination(string: str, pos: int, maximum: int) -> _Result: lines = 0 start = pos result = _Result() if charCodeAt(string, pos) == 0x3C: # /* < */ pos += 1 while pos < maximum: code = charCodeAt(string, pos) if code == 0x0A: # /* \n */) return result if code == 0x3C: # / * < * / return result if code == 0x3E: # /* > */) { result.pos = pos + 1 result.str = unescapeAll(string[start + 1 : pos]) result.ok = True return result if code == 0x5C and pos + 1 < maximum: # \ pos += 2 continue pos += 1 # no closing '>' return result # this should be ... } else { ... branch level = 0 while pos < maximum: code = charCodeAt(string, pos) if code is None or code == 0x20: break # ascii control characters if code < 0x20 or code == 0x7F: break if code == 0x5C and pos + 1 < maximum: if charCodeAt(string, pos + 1) == 0x20: break pos += 2 continue if code == 0x28: # /* ( */) level += 1 if level > 32: return result if code == 0x29: # /* ) */) if level == 0: break level -= 1 pos += 1 if start == pos: return result if level != 0: return result result.str = unescapeAll(string[start:pos]) result.lines = lines result.pos = pos result.ok = True return result