parse_lnk_with_metadata()

LnkMetadata fl::parse_lnk_with_metadata ( fl::string_view content )

inline

Parse a .lnk file into URL + metadata (forward-compat).

Accepts the same format as parse_lnk() and additionally scans non-comment key=value lines that follow the primary URL. Recognized keys:

• sha256=<hex> — stored in LnkMetadata::sha256
• fallback=<url> — stored in LnkMetadata::fallback Unknown keys are silently ignored (forward-compat).

This parser only extracts the fields. Enforcement lives in the WASM browser loader, which verifies sha256 and retries fallback (#4025); C++ resolution on other platforms still uses only the primary URL.

Definition at line 324 of file url.h.

                                                                               {
    LnkMetadata out;
    bool gotPrimary = false;
    fl::size pos = 0;
    while (pos < content.size()) {
        fl::size eol = content.find('\n', pos);
        fl::size lineEnd = (eol == fl::string_view::npos) ? content.size() : eol;
        fl::string_view line = content.substr(pos, lineEnd - pos);
        pos = (eol == fl::string_view::npos) ? content.size() : eol + 1;
 
        if (!line.empty() && line[line.size() - 1] == '\r') {
            line = line.substr(0, line.size() - 1);
        }
 
        fl::size s = 0;
        while (s < line.size() &&
               (line[s] == ' ' || line[s] == '\t')) {
            ++s;
        }
        fl::size e = line.size();
        while (e > s &&
               (line[e - 1] == ' ' || line[e - 1] == '\t')) {
            --e;
        }
        line = line.substr(s, e - s);
 
        if (line.empty() || line[0] == '#') {
            continue;
        }
 
        if (!gotPrimary) {
            out.primary = url(line);
            gotPrimary = true;
            continue;
        }
 
        // Subsequent lines: look for "key=value" metadata.
        fl::size eq = line.find('=');
        if (eq == fl::string_view::npos) {
            // Unknown non-kv line, ignore (forward-compat).
            continue;
        }
        fl::string_view key = line.substr(0, eq);
        fl::string_view value = line.substr(eq + 1);
        if (key == "sha256") {
            out.sha256 = fl::string(value.data(), value.size());
        } else if (key == "fallback") {
            out.fallback = url(value);
        }
        // else: unknown key, ignore.
    }
    return out;
}

References fl::string_view::empty(), fl::LnkMetadata::fallback, fl::string_view::find(), FL_NO_EXCEPT, fl::string_view::npos, pos, fl::LnkMetadata::primary, fl::LnkMetadata::sha256, fl::string_view::size(), fl::string_view::substr(), and type_rank< T >::value.

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