Function xmlRegCopyAtom

ThirdParty/libxml2/vtklibxml2/xmlregexp.c:831–866

* xmlRegCopyAtom: * @ctxt: the regexp parser context * @atom: the original atom * * Allocate a new regexp range * * Returns the new atom or NULL in case of error */

 * Returns the new atom or NULL in case of error
 */
static xmlRegAtomPtr
xmlRegCopyAtom(xmlRegParserCtxtPtr ctxt, xmlRegAtomPtr atom) {
    xmlRegAtomPtr ret;

    ret = (xmlRegAtomPtr) xmlMalloc(sizeof(xmlRegAtom));
    if (ret == NULL) {
	xmlRegexpErrMemory(ctxt);
	return(NULL);
    }
    memset(ret, 0, sizeof(xmlRegAtom));
    ret->type = atom->type;
    ret->quant = atom->quant;
    ret->min = atom->min;
    ret->max = atom->max;
    if (atom->nbRanges > 0) {
        int i;

        ret->ranges = (xmlRegRangePtr *) xmlMalloc(sizeof(xmlRegRangePtr) *
	                                           atom->nbRanges);
	if (ret->ranges == NULL) {
	    xmlRegexpErrMemory(ctxt);
	    goto error;
	}
	for (i = 0;i < atom->nbRanges;i++) {
	    ret->ranges[i] = xmlRegCopyRange(ctxt, atom->ranges[i]);
	    if (ret->ranges[i] == NULL)
	        goto error;
	    ret->nbRanges = i + 1;
	}
    }
    return(ret);

error:
    xmlRegFreeAtom(ret);
    return(NULL);
}

static xmlRegStatePtr
xmlRegNewState(xmlRegParserCtxtPtr ctxt) {