codekingpro/portable-devtools

1"""Process links like https://example.org/"""2 3import re4 5from .state_inline import StateInline6 7# RFC3986: scheme = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )8SCHEME_RE = re.compile(r"(?:^|[^a-z0-9.+-])([a-z][a-z0-9.+-]*)$", re.IGNORECASE)9 10 11def linkify(state: StateInline, silent: bool) -> bool:12    """Rule for identifying plain-text links."""13    if not state.md.options.linkify:14        return False15    if state.linkLevel > 0:16        return False17    if not state.md.linkify:18        raise ModuleNotFoundError("Linkify enabled but not installed.")19 20    pos = state.pos21    maximum = state.posMax22 23    if (24        (pos + 3) > maximum25        or state.src[pos] != ":"26        or state.src[pos + 1] != "/"27        or state.src[pos + 2] != "/"28    ):29        return False30 31    if not (match := SCHEME_RE.search(state.pending)):32        return False33 34    proto = match.group(1)35    if not (link := state.md.linkify.match_at_start(state.src[pos - len(proto) :])):36        return False37    url: str = link.url38 39    # disallow '*' at the end of the link (conflicts with emphasis)40    url = url.rstrip("*")41 42    full_url = state.md.normalizeLink(url)43    if not state.md.validateLink(full_url):44        return False45 46    if not silent:47        state.pending = state.pending[: -len(proto)]48 49        token = state.push("link_open", "a", 1)50        token.attrs = {"href": full_url}51        token.markup = "linkify"52        token.info = "auto"53 54        token = state.push("text", "", 0)55        token.content = state.md.normalizeLinkText(url)56 57        token = state.push("link_close", "a", -1)58        token.markup = "linkify"59        token.info = "auto"60 61    state.pos += len(url) - len(proto)62    return True63