Function xmlParserShrink

ThirdParty/libxml2/vtklibxml2/parserInternals.c:535–568

* xmlParserShrink: * @ctxt: an XML parser context * * Shrink the input buffer. */

 * Shrink the input buffer.
 */
void
xmlParserShrink(xmlParserCtxtPtr ctxt) {
    xmlParserInputPtr in = ctxt->input;
    xmlParserInputBufferPtr buf = in->buf;
    size_t used;

    if (buf == NULL)
        return;
    /* Don't shrink pull parser memory buffers. */
    if ((!PARSER_PROGRESSIVE(ctxt)) &&
        (buf->encoder == NULL) &&
        (buf->readcallback == NULL))
        return;

    used = in->cur - in->base;
    /*
     * Do not shrink on large buffers whose only a tiny fraction
     * was consumed
     */
    if (used > INPUT_CHUNK) {
	size_t res = xmlBufShrink(buf->buffer, used - LINE_LEN);

	if (res > 0) {
            used -= res;
            if ((res > ULONG_MAX) ||
                (in->consumed > ULONG_MAX - (unsigned long)res))
                in->consumed = ULONG_MAX;
            else
                in->consumed += res;
	}
    }

    xmlBufUpdateInput(buf->buffer, in, used);
}

/**
 * xmlParserInputShrink: