Function gjs_string_to_utf8_n

gjs/jsapi-util-string.cpp:115–136

* gjs_string_to_utf8_n: * @cx: the current #JSContext * @str: string to encode in UTF-8 * @output: (out): return location for the UTF-8-encoded string * @output_len: (out): return location for the length of @output * * Converts a JSString to UTF-8 and puts the char array in @output and its * length in @output_len. * * This function handles the boilerplate for unpacking @str, determining i

 * Returns: false if an exception is pending, otherwise true.
 */
bool gjs_string_to_utf8_n(JSContext* cx, JS::HandleString str,
                          JS::UniqueChars* output, size_t* output_len) {
    JSLinearString* linear = JS_EnsureLinearString(cx, str);
    if (!linear)
        return false;

    size_t length = JS::GetDeflatedUTF8StringLength(linear);
    char* bytes = js_pod_malloc<char>(length + 1);
    if (!bytes)
        return false;

    // Append a zero-terminator to the string.
    bytes[length] = '\0';

    size_t deflated_length [[maybe_unused]] =
        JS::DeflateStringToUTF8Buffer(linear, mozilla::Span(bytes, length));
    g_assert(deflated_length == length);

    *output_len = length;
    *output = JS::UniqueChars(bytes);
    return true;
}

/**
 * gjs_lossy_string_from_utf8: