diff options
Diffstat (limited to 'ext/dba/dba_cdb.c')
| -rw-r--r-- | ext/dba/dba_cdb.c | 226 |
1 files changed, 0 insertions, 226 deletions
diff --git a/ext/dba/dba_cdb.c b/ext/dba/dba_cdb.c deleted file mode 100644 index 00d021592e..0000000000 --- a/ext/dba/dba_cdb.c +++ /dev/null @@ -1,226 +0,0 @@ -/* - +----------------------------------------------------------------------+ - | PHP Version 4 | - +----------------------------------------------------------------------+ - | Copyright (c) 1997-2002 The PHP Group | - +----------------------------------------------------------------------+ - | This source file is subject to version 2.02 of the PHP license, | - | that is bundled with this package in the file LICENSE, and is | - | available at through the world-wide-web at | - | http://www.php.net/license/2_02.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: Sascha Schumann <sascha@schumann.cx> | - +----------------------------------------------------------------------+ - */ - -/* $Id$ */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include "php.h" - -#if DBA_CDB -#include "php_cdb.h" - -#include <sys/types.h> -#include <unistd.h> -#include <fcntl.h> - -#include <cdb.h> -#include <uint32.h> - -#define CDB_INFO \ - dba_cdb *cdb = (dba_cdb *) info->dbf - -typedef struct { - struct cdb c; - int fd; - uint32 eod; /* size of constant database */ - uint32 pos; /* current position for traversing */ -} dba_cdb; - -DBA_OPEN_FUNC(cdb) -{ - int gmode = 0; - int fd; - dba_cdb *cdb; - dba_info *pinfo = (dba_info *) info; - - switch (info->mode) { - case DBA_READER: - gmode = O_RDONLY; break; - /* currently not supported: */ -#if 0 - case DBA_WRITER: - gmode = O_RDWR; break; -#endif - default: - return FAILURE; - } - - fd = VCWD_OPEN(info->path, gmode); - if (fd < 0) { - return FAILURE; - } - - cdb = malloc(sizeof *cdb); - memset(cdb, 0, sizeof *cdb); - - cdb_init(&cdb->c, fd); - cdb->fd = fd; - - pinfo->dbf = cdb; - return SUCCESS; -} - -DBA_CLOSE_FUNC(cdb) -{ - CDB_INFO; - - /* cdb_free does not close associated fd */ - cdb_free(&cdb->c); - close(cdb->fd); - free(cdb); -} - -DBA_FETCH_FUNC(cdb) -{ - CDB_INFO; - unsigned int len; - char *new_entry = NULL; - - if (cdb_find(&cdb->c, key, keylen) == 1) { - len = cdb_datalen(&cdb->c); - new_entry = emalloc(len); - - if (cdb_read(&cdb->c, new_entry, len, cdb_datapos(&cdb->c)) == -1) { - free(new_entry); - return NULL; - } - - if (newlen) - *newlen = len; - } - - return new_entry; -} - -DBA_UPDATE_FUNC(cdb) -{ - /* if anyone figures out cdbmake.c, let me know */ - return FAILURE; -} - -DBA_EXISTS_FUNC(cdb) -{ - CDB_INFO; - - if (cdb_find(&cdb->c, key, keylen) == 1) - return SUCCESS; - return FAILURE; -} - -DBA_DELETE_FUNC(cdb) -{ - return FAILURE; -} - - -#define CREAD(n) do { \ - if (read(cdb->fd, buf, n) < n) return NULL; \ -} while (0) - -#define CSEEK(n) do { \ - if (n >= cdb->eod) return NULL; \ - if (lseek(cdb->fd, (off_t)n, SEEK_SET) != (off_t) n) return NULL; \ -} while (0) - - -DBA_FIRSTKEY_FUNC(cdb) -{ - CDB_INFO; - uint32 klen, dlen; - char buf[8]; - char *key; - - cdb->eod = -1; - CSEEK(0); - CREAD(4); - - /* Total length of file in bytes */ - uint32_unpack(buf, &cdb->eod); - - CSEEK(2048); - CREAD(8); - - /* The first four bytes contain the length of the key */ - uint32_unpack(buf, &klen); - uint32_unpack(buf + 4, &dlen); - - key = emalloc(klen + 1); - if (read(cdb->fd, key, klen) < klen) { - efree(key); - key = NULL; - } else { - key[klen] = '\0'; - if (newlen) *newlen = klen; - } - - /* header + klenlen + dlenlen + klen + dlen */ - cdb->pos = 2048 + 4 + 4 + klen + dlen; - - return key; -} - -DBA_NEXTKEY_FUNC(cdb) -{ - CDB_INFO; - uint32 klen, dlen; - char buf[8]; - char *key; - - CSEEK(cdb->pos); - CREAD(8); - uint32_unpack(buf, &klen); - uint32_unpack(buf + 4, &dlen); - - key = emalloc(klen + 1); - if (read(cdb->fd, key, klen) < klen) { - efree(key); - key = NULL; - } else { - key[klen] = '\0'; - if (newlen) *newlen = klen; - } - - cdb->pos += 8 + klen + dlen; - - return key; -} - -DBA_OPTIMIZE_FUNC(cdb) -{ - return SUCCESS; -} - -DBA_SYNC_FUNC(cdb) -{ - /* this is read-only */ - return SUCCESS; -} - -#endif - -/* - * Local variables: - * tab-width: 4 - * c-basic-offset: 4 - * End: - * vim600: sw=4 ts=4 fdm=marker - * vim<600: sw=4 ts=4 - */ |