root/dba/dba_db1.c

DEFINITIONS

1. DBA_OPEN_FUNC
2. DBA_CLOSE_FUNC
3. DBA_FETCH_FUNC
4. DBA_UPDATE_FUNC
5. DBA_EXISTS_FUNC
6. DBA_DELETE_FUNC
7. DBA_FIRSTKEY_FUNC
8. DBA_NEXTKEY_FUNC
9. DBA_OPTIMIZE_FUNC
10. DBA_SYNC_FUNC
11. DBA_INFO_FUNC

/*
   +----------------------------------------------------------------------+
   | PHP Version 5                                                        |
   +----------------------------------------------------------------------+
   | Copyright (c) 1997-2013 The PHP Group                                |
   +----------------------------------------------------------------------+
   | This source file is subject to version 3.01 of the PHP license,      |
   | that is bundled with this package in the file LICENSE, and is        |
   | available through the world-wide-web at the following url:           |
   | http://www.php.net/license/3_01.txt                                  |
   | If you did not receive a copy of the PHP license and are unable to   |
   | obtain it through the world-wide-web, please send a note to          |
   | license@php.net so we can mail you a copy immediately.               |
   +----------------------------------------------------------------------+
   | Author: Shen Cheng-Da <cdsheen@gmail.com>                            |
   +----------------------------------------------------------------------+
 */

/* $Id$ */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "php.h"

#if DBA_DB1
#include "php_db1.h"

#ifdef DB1_INCLUDE_FILE
#include DB1_INCLUDE_FILE
#endif

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

#define DB1_DATA dba_db1_data *dba = info->dbf
#define DB1_GKEY DBT gkey; gkey.data = (char *) key; gkey.size = keylen

typedef struct {
        DB  *dbp;
} dba_db1_data;

DBA_OPEN_FUNC(db1)
{
        dba_db1_data    *dba;
        DB              *db;

        int gmode;
        int filemode = 0644;

        if (info->argc > 0) {
                convert_to_long_ex(info->argv[0]);
                filemode = Z_LVAL_PP(info->argv[0]);
        }

        gmode = 0;
        switch (info->mode) {
                case DBA_READER:
                        gmode = O_RDONLY;
                        break;
                case DBA_WRITER:
                        gmode = O_RDWR;
                        break;
                case DBA_CREAT:
                        gmode = O_RDWR | O_CREAT;
                        break;
                case DBA_TRUNC:
                        gmode = O_RDWR | O_CREAT | O_TRUNC;
                        break;
                default:
                        return FAILURE; /* not possible */
        }

        db = dbopen((char *)info->path, gmode, filemode, DB_HASH, NULL);

        if (db == NULL) {
                return FAILURE;
        }

        dba = pemalloc(sizeof(*dba), info->flags&DBA_PERSISTENT);
        dba->dbp = db;

        info->dbf = dba;

        return SUCCESS;
}

DBA_CLOSE_FUNC(db1)
{
        DB1_DATA;
        dba->dbp->close(dba->dbp);
        pefree(info->dbf, info->flags&DBA_PERSISTENT);
}

DBA_FETCH_FUNC(db1)
{
        DBT gval;
        DB1_DATA;
        DB1_GKEY;

        memset(&gval, 0, sizeof(gval));
        if (dba->dbp->get(dba->dbp, &gkey, &gval, 0) == RET_SUCCESS) {
                if (newlen) *newlen = gval.size;
                return estrndup(gval.data, gval.size);
        }
        return NULL;
}

DBA_UPDATE_FUNC(db1)
{
        DBT gval;
        DB1_DATA;
        DB1_GKEY;

        gval.data = (char *) val;
        gval.size = vallen;

        return dba->dbp->put(dba->dbp, &gkey, &gval, mode == 1 ? R_NOOVERWRITE : 0) != RET_SUCCESS ? FAILURE : SUCCESS;
}

DBA_EXISTS_FUNC(db1)
{
        DBT gval;
        DB1_DATA;
        DB1_GKEY;

        return dba->dbp->get(dba->dbp, &gkey, &gval, 0) != RET_SUCCESS ? FAILURE : SUCCESS;
}

DBA_DELETE_FUNC(db1)
{
        DB1_DATA;
        DB1_GKEY;

        return dba->dbp->del(dba->dbp, &gkey, 0) != RET_SUCCESS ? FAILURE : SUCCESS;
}

DBA_FIRSTKEY_FUNC(db1)
{
        DBT gkey;
        DBT gval;
        DB1_DATA;

        memset(&gkey, 0, sizeof(gkey));
        memset(&gval, 0, sizeof(gval));

        if (dba->dbp->seq(dba->dbp, &gkey, &gval, R_FIRST) == RET_SUCCESS) {
                if (newlen) *newlen = gkey.size;
                return estrndup(gkey.data, gkey.size);
        }
        return NULL;
}

DBA_NEXTKEY_FUNC(db1)
{
        DBT gkey;
        DBT gval;
        DB1_DATA;

        memset(&gkey, 0, sizeof(gkey));
        memset(&gval, 0, sizeof(gval));

        if (dba->dbp->seq(dba->dbp, &gkey, &gval, R_NEXT) == RET_SUCCESS) {
                if (newlen) *newlen = gkey.size;
                return estrndup(gkey.data, gkey.size);
        }
        return NULL;
}

DBA_OPTIMIZE_FUNC(db1)
{
        /* dummy */
        return SUCCESS;
}

DBA_SYNC_FUNC(db1)
{
        return SUCCESS;
}

DBA_INFO_FUNC(db1)
{
        return estrdup(DB1_VERSION);
}

#endif

/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * End:
 * vim600: sw=4 ts=4 fdm=marker
 * vim<600: sw=4 ts=4
 */