Function xmlHashCopySafe

ThirdParty/libxml2/vtklibxml2/hash.c:1148–1187

* xmlHashCopySafe: * @hash: hash table * @copyFunc: copier function for items in the hash * @deallocFunc: deallocation function in case of errors * * Copy the hash table using @copyFunc to copy payloads. * * Available since 2.13.0. * * Returns the new table or NULL if a memory allocation failed. */

 * Returns the new table or NULL if a memory allocation failed.
 */
xmlHashTablePtr
xmlHashCopySafe(xmlHashTablePtr hash, xmlHashCopier copyFunc,
                xmlHashDeallocator deallocFunc) {
    const xmlHashEntry *entry, *end;
    xmlHashTablePtr ret;

    if ((hash == NULL) || (copyFunc == NULL))
        return(NULL);

    ret = xmlHashCreate(hash->size);
    if (ret == NULL)
        return(NULL);

    if (hash->size == 0)
        return(ret);

    end = &hash->table[hash->size];

    for (entry = hash->table; entry < end; entry++) {
        if (entry->hashValue != 0) {
            void *copy;

            copy = copyFunc(entry->payload, entry->key);
            if (copy == NULL)
                goto error;
            if (xmlHashAdd3(ret, entry->key, entry->key2, entry->key3,
                            copy) <= 0) {
                if (deallocFunc != NULL)
                    deallocFunc(copy, entry->key);
                goto error;
            }
        }
    }

    return(ret);

error:
    xmlHashFree(ret, deallocFunc);
    return(NULL);
}

/*
 * xmlHashCopy: