root/ext/dba/dba_flatfile.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) 1997-2008 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: Marcus Boerger <helly@php.net>                               |
   +----------------------------------------------------------------------+
 */

/* $Id: dba_flatfile.c,v 1.19.2.1.2.2 2007/12/31 07:20:05 sebastian Exp $ */

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

#include "php.h"

#if DBA_FLATFILE
#include "php_flatfile.h"

#include "libflatfile/flatfile.h"

#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

#define FLATFILE_DATA flatfile *dba = info->dbf
#define FLATFILE_GKEY datum gkey; gkey.dptr = (char *) key; gkey.dsize = keylen

DBA_OPEN_FUNC(flatfile)
{
        info->dbf = pemalloc(sizeof(flatfile), info->flags&DBA_PERSISTENT);
        memset(info->dbf, 0, sizeof(flatfile));

        ((flatfile*)info->dbf)->fp = info->fp;

        return SUCCESS;
}

DBA_CLOSE_FUNC(flatfile)
{
        FLATFILE_DATA;

        if (dba->nextkey.dptr) {
                efree(dba->nextkey.dptr);
        }
        pefree(dba, info->flags&DBA_PERSISTENT);
}

DBA_FETCH_FUNC(flatfile)
{
        datum gval;
        char *new = NULL;

        FLATFILE_DATA;
        FLATFILE_GKEY;

        gval = flatfile_fetch(dba, gkey TSRMLS_CC);
        if (gval.dptr) {
                if (newlen) {
                        *newlen = gval.dsize;
                }
                new = estrndup(gval.dptr, gval.dsize);
                efree(gval.dptr);
        }
        return new;
}

DBA_UPDATE_FUNC(flatfile)
{
        datum gval;

        FLATFILE_DATA;
        FLATFILE_GKEY;
        gval.dptr = (char *) val;
        gval.dsize = vallen;
        
        switch(flatfile_store(dba, gkey, gval, mode==1 ? FLATFILE_INSERT : FLATFILE_REPLACE TSRMLS_CC)) {
        case -1:
                php_error_docref1(NULL TSRMLS_CC, key, E_WARNING, "Operation not possible");
                return FAILURE;
        default:
        case 0:
                return SUCCESS;
        case 1:
                php_error_docref1(NULL TSRMLS_CC, key, E_WARNING, "Key already exists");
                return SUCCESS;
        }
}

DBA_EXISTS_FUNC(flatfile)
{
        datum gval;
        FLATFILE_DATA;
        FLATFILE_GKEY;
        
        gval = flatfile_fetch(dba, gkey TSRMLS_CC);
        if (gval.dptr) {
                efree(gval.dptr);
                return SUCCESS;
        }
        return FAILURE;
}

DBA_DELETE_FUNC(flatfile)
{
        FLATFILE_DATA;
        FLATFILE_GKEY;
        return(flatfile_delete(dba, gkey TSRMLS_CC) == -1 ? FAILURE : SUCCESS);
}

DBA_FIRSTKEY_FUNC(flatfile)
{
        FLATFILE_DATA;

        if (dba->nextkey.dptr) {
                efree(dba->nextkey.dptr);
        }
        dba->nextkey = flatfile_firstkey(dba TSRMLS_CC);
        if (dba->nextkey.dptr) {
                if (newlen)  {
                        *newlen = dba->nextkey.dsize;
                }
                return estrndup(dba->nextkey.dptr, dba->nextkey.dsize);
        }
        return NULL;
}

DBA_NEXTKEY_FUNC(flatfile)
{
        FLATFILE_DATA;
        
        if (!dba->nextkey.dptr) {
                return NULL;
        }
        
        if (dba->nextkey.dptr) {
                efree(dba->nextkey.dptr);
        }
        dba->nextkey = flatfile_nextkey(dba TSRMLS_CC);
        if (dba->nextkey.dptr) {
                if (newlen) {
                        *newlen = dba->nextkey.dsize;
                }
                return estrndup(dba->nextkey.dptr, dba->nextkey.dsize);
        }
        return NULL;
}

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

DBA_SYNC_FUNC(flatfile)
{
        /* dummy */
        return SUCCESS;
}

DBA_INFO_FUNC(flatfile)
{
        return estrdup(flatfile_version());
}

#endif

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