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00001 /* Copyright 2000-2004 The Apache Software Foundation 00002 * 00003 * Licensed under the Apache License, Version 2.0 (the "License"); 00004 * you may not use this file except in compliance with the License. 00005 * You may obtain a copy of the License at 00006 * 00007 * http://www.apache.org/licenses/LICENSE-2.0 00008 * 00009 * Unless required by applicable law or agreed to in writing, software 00010 * distributed under the License is distributed on an "AS IS" BASIS, 00011 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00012 * See the License for the specific language governing permissions and 00013 * limitations under the License. 00014 */ 00015 00016 /* 00017 * sdbm - ndbm work-alike hashed database library 00018 * based on Per-Ake Larson's Dynamic Hashing algorithms. BIT 18 (1978). 00019 * author: oz@nexus.yorku.ca 00020 * status: ex-public domain 00021 */ 00022 00023 #ifndef APR_SDBM_H 00024 #define APR_SDBM_H 00025 00026 #include "apu.h" 00027 #include "apr_errno.h" 00028 #include "apr_file_io.h" /* for apr_fileperms_t */ 00029 00043 typedef struct apr_sdbm_t apr_sdbm_t; 00044 00048 typedef struct { 00050 char *dptr; 00052 int dsize; 00053 } apr_sdbm_datum_t; 00054 00055 /* The extensions used for the database files */ 00057 #define APR_SDBM_DIRFEXT ".dir" 00058 00059 #define APR_SDBM_PAGFEXT ".pag" 00060 00061 /* flags to sdbm_store */ 00062 #define APR_SDBM_INSERT 0 00063 #define APR_SDBM_REPLACE 1 00064 #define APR_SDBM_INSERTDUP 2 00084 APU_DECLARE(apr_status_t) apr_sdbm_open(apr_sdbm_t **db, const char *name, 00085 apr_int32_t mode, 00086 apr_fileperms_t perms, apr_pool_t *p); 00087 00092 APU_DECLARE(apr_status_t) apr_sdbm_close(apr_sdbm_t *db); 00093 00109 APU_DECLARE(apr_status_t) apr_sdbm_lock(apr_sdbm_t *db, int type); 00110 00115 APU_DECLARE(apr_status_t) apr_sdbm_unlock(apr_sdbm_t *db); 00116 00123 APU_DECLARE(apr_status_t) apr_sdbm_fetch(apr_sdbm_t *db, 00124 apr_sdbm_datum_t *value, 00125 apr_sdbm_datum_t key); 00126 00138 APU_DECLARE(apr_status_t) apr_sdbm_store(apr_sdbm_t *db, apr_sdbm_datum_t key, 00139 apr_sdbm_datum_t value, int opt); 00140 00147 APU_DECLARE(apr_status_t) apr_sdbm_delete(apr_sdbm_t *db, 00148 const apr_sdbm_datum_t key); 00149 00159 APU_DECLARE(apr_status_t) apr_sdbm_firstkey(apr_sdbm_t *db, apr_sdbm_datum_t *key); 00160 00166 APU_DECLARE(apr_status_t) apr_sdbm_nextkey(apr_sdbm_t *db, apr_sdbm_datum_t *key); 00167 00172 APU_DECLARE(int) apr_sdbm_rdonly(apr_sdbm_t *db); 00174 #endif /* APR_SDBM_H */

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