Function xmlCharEncOutFunc

ThirdParty/libxml2/vtklibxml2/encoding.c:2557–2641

* xmlCharEncOutFunc: * @handler: char encoding transformation data structure * @out: an xmlBuffer for the output. * @in: an xmlBuffer for the input * * Generic front-end for the encoding handler output function * a first call with @in == NULL has to be made firs to initiate the * output in case of non-stateless encoding needing to initiate their * state or the output (like the BOM in UTF

 * Returns the number of bytes written or an XML_ENC_ERR code.
 */
int
xmlCharEncOutFunc(xmlCharEncodingHandler *handler, xmlBufferPtr out,
                  xmlBufferPtr in) {
    int ret;
    int written;
    int writtentot = 0;
    int toconv;

    if (handler == NULL) return(XML_ENC_ERR_INTERNAL);
    if (out == NULL) return(XML_ENC_ERR_INTERNAL);

retry:

    written = out->size - out->use;

    if (written > 0)
	written--; /* Gennady: count '/0' */

    /*
     * First specific handling of in = NULL, i.e. the initialization call
     */
    if (in == NULL) {
        toconv = 0;
        /* TODO: Check return value. */
        xmlEncOutputChunk(handler, &out->content[out->use], &written,
                          NULL, &toconv);
        out->use += written;
        out->content[out->use] = 0;
        return(0);
    }

    /*
     * Conversion itself.
     */
    toconv = in->use;
    if (toconv * 4 >= written) {
        xmlBufferGrow(out, toconv * 4);
	written = out->size - out->use - 1;
    }
    ret = xmlEncOutputChunk(handler, &out->content[out->use], &written,
                            in->content, &toconv);
    xmlBufferShrink(in, toconv);
    out->use += written;
    writtentot += written;
    out->content[out->use] = 0;

    if (ret == XML_ENC_ERR_SPACE)
        goto retry;

    /*
     * Attempt to handle error cases
     */
    if (ret == XML_ENC_ERR_INPUT) {
        xmlChar charref[20];
        int len = in->use;
        const xmlChar *utf = (const xmlChar *) in->content;
        int cur, charrefLen;