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/*************************************************************************************************
* Example for the C language interface
*
* Copyright 2020 Google LLC
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of the License at
* https://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software distributed under the
* License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
* either express or implied. See the License for the specific language governing permissions
* and limitations under the License.
*************************************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include "tkrzw_langc.h"
// Main routine.
int main(int argc, char** argv) {
// Opens the index file.
TkrzwIndex* index = tkrzw_index_open("casket.tkt", true, "truncate=true,num_buckets=100");
// Adds records to the index.
// The key is a division name and the value is person name.
tkrzw_index_add(index, "general", -1, "anne", -1);
tkrzw_index_add(index, "general", -1, "matthew", -1);
tkrzw_index_add(index, "general", -1, "marilla", -1);
tkrzw_index_add(index, "sales", -1, "gilvert", -1);
// Anne moves to the sales division.
tkrzw_index_remove(index, "general", -1, "anne", -1);
tkrzw_index_add(index, "sales", -1, "anne", -1);
// Prints all members for each division.
const char* divisions[] = {"general", "sales"};
for (int i = 0; i < sizeof(divisions) / sizeof(*divisions); i++) {
const char* division = divisions[i];
printf("%s\n", division);
int32_t num_members = 0;
TkrzwStr* members = tkrzw_index_get_values(index, division, -1, 0, &num_members);
for (int j = 0; j < num_members; j++) {
printf(" -- %s\n", members[j].ptr);
}
tkrzw_free_str_array(members, num_members);
}
// Prints every record by iterator.
TkrzwIndexIter* iter = tkrzw_index_make_iterator(index);
tkrzw_index_iter_first(iter);
char *key, *value;
while (tkrzw_index_iter_get(iter, &key, NULL, &value, NULL)) {
printf("%s: %s\n", key, value);
free(value);
free(key);
tkrzw_index_iter_next(iter);
}
tkrzw_index_iter_free(iter);
// Closes the index.
tkrzw_index_close(index);
return 0;
}
// END OF FILE
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