Function xmlParserInputShrink

ThirdParty/libxml2/vtklibxml2/parserInternals.c:578–620

* xmlParserInputShrink: * @in: an XML parser input * * DEPRECATED: Don't use. * * This function removes used input for the parser. */

 * This function removes used input for the parser.
 */
void
xmlParserInputShrink(xmlParserInputPtr in) {
    size_t used;
    size_t ret;

    if (in == NULL) return;
    if (in->buf == NULL) return;
    if (in->base == NULL) return;
    if (in->cur == NULL) return;
    if (in->buf->buffer == NULL) return;

    used = in->cur - in->base;
    /*
     * Do not shrink on large buffers whose only a tiny fraction
     * was consumed
     */
    if (used > INPUT_CHUNK) {
	ret = xmlBufShrink(in->buf->buffer, used - LINE_LEN);
	if (ret > 0) {
            used -= ret;
            if ((ret > ULONG_MAX) ||
                (in->consumed > ULONG_MAX - (unsigned long)ret))
                in->consumed = ULONG_MAX;
            else
                in->consumed += ret;
	}
    }

    if (xmlBufUse(in->buf->buffer) <= INPUT_CHUNK) {
        xmlParserInputBufferRead(in->buf, 2 * INPUT_CHUNK);
    }

    in->base = xmlBufContent(in->buf->buffer);
    if (in->base == NULL) {
        /* TODO: raise error */
        in->base = BAD_CAST "";
        in->cur = in->base;
        in->end = in->base;
        return;
    }
    in->cur = in->base + used;
    in->end = xmlBufEnd(in->buf->buffer);
}

/************************************************************************
 *									*