Function xmlParserInputGrow

ThirdParty/libxml2/vtklibxml2/parserInternals.c:495–527

* xmlParserInputGrow: * @in: an XML parser input * @len: an indicative size for the lookahead * * DEPRECATED: Don't use. * * This function increase the input for the parser. It tries to * preserve pointers to the input buffer, and keep already read data * * Returns the amount of char read, or -1 in case of error, 0 indicate the * end of this entity */

 * end of this entity
 */
int
xmlParserInputGrow(xmlParserInputPtr in, int len) {
    int ret;
    size_t indx;

    if ((in == NULL) || (len < 0)) return(-1);
    if (in->buf == NULL) return(-1);
    if (in->base == NULL) return(-1);
    if (in->cur == NULL) return(-1);
    if (in->buf->buffer == NULL) return(-1);

    /* Don't grow memory buffers. */
    if ((in->buf->encoder == NULL) && (in->buf->readcallback == NULL))
        return(0);

    indx = in->cur - in->base;
    if (xmlBufUse(in->buf->buffer) > (unsigned int) indx + INPUT_CHUNK) {
        return(0);
    }
    ret = xmlParserInputBufferGrow(in->buf, len);

    in->base = xmlBufContent(in->buf->buffer);
    if (in->base == NULL) {
        in->base = BAD_CAST "";
        in->cur = in->base;
        in->end = in->base;
        return(-1);
    }
    in->cur = in->base + indx;
    in->end = xmlBufEnd(in->buf->buffer);

    return(ret);
}

/**
 * xmlParserShrink: