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|
/*
+----------------------------------------------------------------------+
| PHP HTML Embedded Scripting Language Version 3.0 |
+----------------------------------------------------------------------+
| Copyright (c) 2000 PHP Development Team (See Credits file) |
+----------------------------------------------------------------------+
| This program is free software; you can redistribute it and/or modify |
| it under the terms of one of the following licenses: |
| |
| A) the GNU General Public License as published by the Free Software |
| Foundation; either version 2 of the License, or (at your option) |
| any later version. |
| |
| B) the PHP License as published by the PHP Development Team and |
| included in the distribution in the file: LICENSE |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of both licenses referred to here. |
| If you did not, or have any questions about PHP licensing, please |
| contact core@php.net. |
+----------------------------------------------------------------------+
| Authors: Sascha Schumann <sascha@schumann.cx> |
+----------------------------------------------------------------------+
*/
/* $Id: dba_dbm.c,v 1.17 2000/07/10 10:15:36 sas Exp $ */
#include "php.h"
#if DBA_DBM
#include "php3_dbm.h"
#include <dbm.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#define DBM_DATA dba_dbm_data *dba = info->dbf
#define DBM_GKEY datum gkey; gkey.dptr = (char *) key; gkey.dsize = keylen
#ifndef PATH_MAX
#define PATH_MAX 255
#endif
#define TRUNC_IT(extension, mode) \
snprintf(buf, PATH_MAX, "%s" extension, info->path); \
buf[PATH_MAX] = '\0'; \
if((fd = open(buf, O_CREAT | mode | O_WRONLY, filemode)) == -1) \
return FAILURE; \
close(fd);
typedef struct {
datum nextkey;
} dba_dbm_data;
DBA_OPEN_FUNC(dbm)
{
int fd;
int filemode = 0644;
if(info->argc > 0) {
convert_to_long(info->argv[0]);
filemode = info->argv[0]->value.lval;
}
if(info->mode == DBA_TRUNC) {
char buf[PATH_MAX + 1];
/* dbm/ndbm original */
TRUNC_IT(".pag", O_TRUNC);
TRUNC_IT(".dir", O_TRUNC);
}
if(info->mode == DBA_CREAT) {
char buf[PATH_MAX + 1];
TRUNC_IT(".pag", 0);
TRUNC_IT(".dir", 0);
}
if(dbminit((char *) info->path) == -1) {
return FAILURE;
}
info->dbf = calloc(sizeof(dba_dbm_data), 1);
return SUCCESS;
}
DBA_CLOSE_FUNC(dbm)
{
free(info->dbf);
dbmclose();
}
DBA_FETCH_FUNC(dbm)
{
datum gval;
char *new = NULL;
DBM_GKEY;
gval = fetch(gkey);
if(gval.dptr) {
if(newlen) *newlen = gval.dsize;
new = estrndup(gval.dptr, gval.dsize);
}
return new;
}
DBA_UPDATE_FUNC(dbm)
{
datum gval;
DBM_GKEY;
gval.dptr = (char *) val;
gval.dsize = vallen;
return (store(gkey, gval) == -1 ? FAILURE : SUCCESS);
}
DBA_EXISTS_FUNC(dbm)
{
datum gval;
DBM_GKEY;
gval = fetch(gkey);
if(gval.dptr) {
return SUCCESS;
}
return FAILURE;
}
DBA_DELETE_FUNC(dbm)
{
DBM_GKEY;
return(delete(gkey) == -1 ? FAILURE : SUCCESS);
}
DBA_FIRSTKEY_FUNC(dbm)
{
DBM_DATA;
datum gkey;
char *key = NULL;
gkey = firstkey();
if(gkey.dptr) {
if(newlen) *newlen = gkey.dsize;
key = estrndup(gkey.dptr, gkey.dsize);
dba->nextkey = gkey;
} else
dba->nextkey.dptr = NULL;
return key;
}
DBA_NEXTKEY_FUNC(dbm)
{
DBM_DATA;
datum gkey;
char *nkey = NULL;
if(!dba->nextkey.dptr) return NULL;
gkey = nextkey(dba->nextkey);
if(gkey.dptr) {
if(newlen) *newlen = gkey.dsize;
nkey = estrndup(gkey.dptr, gkey.dsize);
dba->nextkey = gkey;
} else
dba->nextkey.dptr = NULL;
return nkey;
}
DBA_OPTIMIZE_FUNC(dbm)
{
/* dummy */
return SUCCESS;
}
DBA_SYNC_FUNC(dbm)
{
return SUCCESS;
}
#endif
|
