Function xmlOutputBufferFlush

ThirdParty/libxml2/vtklibxml2/xmlIO.c:2832–2881

* xmlOutputBufferFlush: * @out: a buffered output * * flushes the output I/O channel * * Returns the number of byte written or -1 in case of error. */

 * Returns the number of byte written or -1 in case of error.
 */
int
xmlOutputBufferFlush(xmlOutputBufferPtr out) {
    int nbchars = 0, ret = 0;

    if ((out == NULL) || (out->error)) return(-1);
    /*
     * first handle encoding stuff.
     */
    if ((out->conv != NULL) && (out->encoder != NULL)) {
	/*
	 * convert as much as possible to the parser output buffer.
	 */
	do {
	    nbchars = xmlCharEncOutput(out, 0);
	    if (nbchars < 0)
		return(-1);
	} while (nbchars);
    }

    /*
     * second flush the stuff to the I/O channel
     */
    if ((out->conv != NULL) && (out->encoder != NULL) &&
	(out->writecallback != NULL)) {
	ret = out->writecallback(out->context,
                                 (const char *)xmlBufContent(out->conv),
                                 xmlBufUse(out->conv));
	if (ret >= 0)
	    xmlBufShrink(out->conv, ret);
    } else if (out->writecallback != NULL) {
	ret = out->writecallback(out->context,
                                 (const char *)xmlBufContent(out->buffer),
                                 xmlBufUse(out->buffer));
	if (ret >= 0)
	    xmlBufShrink(out->buffer, ret);
    }
    if (ret < 0) {
        int errNo = (ret == -1) ? XML_IO_WRITE : -ret;

        xmlIOErr(errNo, NULL);
        out->error = errNo;
	return(ret);
    }
    if (out->written > INT_MAX - ret)
        out->written = INT_MAX;
    else
        out->written += ret;

    return(ret);
}
#endif /* LIBXML_OUTPUT_ENABLED */

/**