Function xmlSwitchInputEncoding

ThirdParty/libxml2/vtklibxml2/parserInternals.c:1166–1245

* xmlSwitchInputEncoding: * @ctxt: the parser context, only for error reporting * @input: the input stream * @handler: the encoding handler * * DEPRECATED: Internal function, don't use. * * Use encoding handler to decode input data. * * Returns 0 in case of success, -1 otherwise */

 * Returns 0 in case of success, -1 otherwise
 */
int
xmlSwitchInputEncoding(xmlParserCtxtPtr ctxt, xmlParserInputPtr input,
                       xmlCharEncodingHandlerPtr handler)
{
    int nbchars;
    xmlParserInputBufferPtr in;

    if ((input == NULL) || (input->buf == NULL)) {
        xmlCharEncCloseFunc(handler);
	return (-1);
    }
    in = input->buf;

    input->flags |= XML_INPUT_HAS_ENCODING;

    /*
     * UTF-8 requires no encoding handler.
     */
    if ((handler != NULL) &&
        (xmlStrcasecmp(BAD_CAST handler->name, BAD_CAST "UTF-8") == 0)) {
        xmlCharEncCloseFunc(handler);
        handler = NULL;
    }

    if (in->encoder == handler)
        return (0);

    if (in->encoder != NULL) {
        /*
         * Switching encodings during parsing is a really bad idea,
         * but Chromium can switch between ISO-8859-1 and UTF-16 before
         * separate calls to xmlParseChunk.
         *
         * TODO: We should check whether the "raw" input buffer is empty and
         * convert the old content using the old encoder.
         */

        xmlCharEncCloseFunc(in->encoder);
        in->encoder = handler;
        return (0);
    }

    in->encoder = handler;

    /*
     * Is there already some content down the pipe to convert ?
     */
    if (xmlBufIsEmpty(in->buffer) == 0) {
        xmlBufPtr buf;
        size_t processed;

        buf = xmlBufCreate();
        if (buf == NULL) {
            xmlCtxtErrMemory(ctxt);
            return(-1);
        }

        /*