Function xmlBuildQName

ThirdParty/libxml2/vtklibxml2/tree.c:167–197

* xmlBuildQName: * @ncname: the Name * @prefix: the prefix * @memory: preallocated memory * @len: preallocated memory length * * Builds the QName @prefix:@ncname in @memory if there is enough space * and prefix is not NULL nor empty, otherwise allocate a new string. * If prefix is NULL or empty it returns ncname. * * Returns the new string which must be freed by the caller if differe

 *         @memory and @ncname or NULL in case of error
 */
xmlChar *
xmlBuildQName(const xmlChar *ncname, const xmlChar *prefix,
	      xmlChar *memory, int len) {
    int lenn, lenp;
    xmlChar *ret;

    if (ncname == NULL) return(NULL);
    if (prefix == NULL) return((xmlChar *) ncname);

#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
    /* Make allocation more likely */
    if (len > 8)
        len = 8;
#endif

    lenn = strlen((char *) ncname);
    lenp = strlen((char *) prefix);

    if ((memory == NULL) || (len < lenn + lenp + 2)) {
	ret = (xmlChar *) xmlMallocAtomic(lenn + lenp + 2);
	if (ret == NULL)
	    return(NULL);
    } else {
	ret = memory;
    }
    memcpy(&ret[0], prefix, lenp);
    ret[lenp] = ':';
    memcpy(&ret[lenp + 1], ncname, lenn);
    ret[lenn + lenp + 1] = 0;
    return(ret);
}

/**
 * xmlSplitQName2: