88 lines
2.2 KiB
C
88 lines
2.2 KiB
C
/*
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* dbver.c: code to read, write and identify the database version no.
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*
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* Copyright (C) 1994, 1995 Graeme W. Wilford. (Wilf.)
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* Copyright (C) 2001, 2002 Colin Watson.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Mon Aug 18 20:35:30 BST 1994 Wilf. (G.Wilford@ee.surrey.ac.uk)
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdlib.h>
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#include <string.h>
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#include "gettext.h"
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#define _(String) gettext (String)
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#include "xalloc.h"
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#include "manconfig.h"
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#include "debug.h"
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#include "fatal.h"
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#include "mydbm.h"
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int dbver_rd (MYDBM_FILE dbfile)
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{
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datum key, content;
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memset (&key, 0, sizeof key);
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MYDBM_SET (key, xstrdup (VER_KEY));
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content = MYDBM_FETCH (dbfile, key);
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MYDBM_FREE_DPTR (key);
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if (MYDBM_DPTR (content) == NULL) {
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debug (_ ("warning: %s has no version identifier\n"),
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dbfile->name);
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return 1;
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} else if (!STREQ (MYDBM_DPTR (content), VER_ID)) {
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debug (_ ("warning: %s is version %s, expecting %s\n"),
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dbfile->name, MYDBM_DPTR (content), VER_ID);
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MYDBM_FREE_DPTR (content);
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return 1;
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} else {
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MYDBM_FREE_DPTR (content);
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return 0;
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}
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}
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void dbver_wr (MYDBM_FILE dbfile)
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{
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datum key, content;
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memset (&key, 0, sizeof key);
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memset (&content, 0, sizeof content);
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MYDBM_SET (key, xstrdup (VER_KEY));
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MYDBM_SET (content, xstrdup (VER_ID));
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if (MYDBM_INSERT (dbfile, key, content) != 0)
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fatal (0,
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_ ("fatal: unable to insert version identifier into "
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"%s"),
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dbfile->name);
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MYDBM_FREE_DPTR (key);
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MYDBM_FREE_DPTR (content);
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}
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