67 lines
2.2 KiB
C
67 lines
2.2 KiB
C
/*
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* Copyright 2008 Arsen Chaloyan
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <ctype.h>
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#include "apt_string_table.h"
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/* Get the string by a given id. */
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APT_DECLARE(const apt_str_t*) apt_string_table_str_get(const apt_str_table_item_t table[], apr_size_t size, apr_size_t id)
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{
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if(id < size) {
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return &table[id].value;
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}
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return NULL;
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}
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/* Find the id associated with a given string from the table */
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APT_DECLARE(apr_size_t) apt_string_table_id_find(const apt_str_table_item_t table[], apr_size_t size, const apt_str_t *value)
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{
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/* Key character is stored within each apt_string_table_item.
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At first, key characters must be matched in a loop crossing the items.
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Then whole strings should be compared only for the matched item.
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Key characters should be automatically generated once for a given string table. */
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apr_size_t i;
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const apt_str_table_item_t *item;
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for(i=0; i<size; i++) {
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item = &table[i];
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if(item->value.length != value->length) {
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/* lengths of th strings differ, just contninue */
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continue;
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}
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/* check whether key is available */
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if(item->key < value->length) {
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/* check whether values are matched by key (using no case compare) */
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if(value->length == item->value.length &&
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tolower(item->value.buf[item->key]) == tolower(value->buf[item->key])) {
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/* whole strings must be compared to ensure, should be done only once for each lookup */
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if(apt_string_compare(&item->value,value) == TRUE) {
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return i;
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}
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}
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}
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else {
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/* no key available, just compare whole strings */
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if(apt_string_compare(&item->value,value) == TRUE) {
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return i;
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}
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}
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}
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/* no match found, return invalid id */
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return size;
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}
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