2 * Copyright (C) 1994-1999, Index Data
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.29 1999-05-26 07:49:12 adam
10 * Revision 1.28 1999/05/12 13:08:05 adam
11 * First version of ISAMS.
13 * Revision 1.27 1999/02/02 14:50:01 adam
14 * Updated WIN32 code specific sections. Changed header.
16 * Revision 1.26 1998/02/17 10:32:52 adam
17 * Fixed bug: binary files weren't opened with flag b on NT.
19 * Revision 1.25 1997/10/27 14:25:38 adam
22 * Revision 1.24 1997/09/18 08:59:16 adam
23 * Extra generic handle for the character mapping routines.
25 * Revision 1.23 1997/09/17 12:19:06 adam
26 * Zebra version corresponds to YAZ version 1.4.
27 * Changed Zebra server so that it doesn't depend on global common_resource.
29 * Revision 1.22 1997/09/09 13:37:52 adam
30 * Partial port to WIN95/NT.
32 * Revision 1.21 1996/10/29 13:56:13 adam
33 * Include of zebrautl.h instead of alexutil.h.
35 * Revision 1.20 1996/03/26 15:59:04 adam
36 * The directory of the shadow table file can be specified by the new
39 * Revision 1.19 1996/02/05 12:28:58 adam
40 * Removed a LOG_LOG message.
42 * Revision 1.18 1996/01/02 08:59:06 quinn
43 * Changed "commit" setting to "shadow".
45 * Revision 1.17 1995/12/11 09:03:51 adam
46 * New function: cf_unlink.
47 * New member of commit file head: state (0) deleted, (1) hash file.
49 * Revision 1.16 1995/12/08 16:21:13 adam
50 * Work on commit/update.
52 * Revision 1.15 1995/12/01 16:24:28 adam
53 * Commit files use separate meta file area.
55 * Revision 1.14 1995/12/01 11:37:21 adam
56 * Cached/commit files implemented as meta-files.
58 * Revision 1.13 1995/11/30 17:00:49 adam
59 * Several bug fixes. Commit system runs now.
61 * Revision 1.12 1995/11/30 08:33:10 adam
62 * Started work on commit facility.
64 * Revision 1.11 1995/09/04 12:33:21 adam
65 * Various cleanup. YAZ util used instead.
67 * Revision 1.10 1994/08/25 10:15:54 quinn
70 * Revision 1.9 1994/08/24 08:45:48 quinn
73 * Revision 1.8 1994/08/23 15:03:34 quinn
74 * *** empty log message ***
76 * Revision 1.7 1994/08/23 14:25:45 quinn
77 * Added O_CREAT because some geek wanted it. Sheesh.
79 * Revision 1.6 1994/08/23 14:21:38 quinn
82 * Revision 1.5 1994/08/18 08:10:08 quinn
85 * Revision 1.4 1994/08/17 14:27:32 quinn
88 * Revision 1.2 1994/08/17 14:09:32 quinn
89 * Compiles cleanly (still only dummy).
91 * Revision 1.1 1994/08/17 13:55:08 quinn
92 * New blocksystem. dummy only
106 #include <zebrautl.h>
110 struct BFiles_struct {
111 MFile_area commit_area;
112 MFile_area_struct *register_area;
116 BFiles bfs_create (const char *spec)
118 BFiles bfs = (BFiles) xmalloc (sizeof(*bfs));
119 bfs->commit_area = NULL;
120 bfs->register_area = mf_init("register", spec);
125 void bfs_destroy (BFiles bfs)
127 xfree (bfs->lockDir);
128 mf_destroy (bfs->commit_area);
129 mf_destroy (bfs->register_area);
133 static FILE *open_cache (BFiles bfs, const char *flags)
135 char cacheFilename[1024];
138 sprintf (cacheFilename, "%scache",
139 bfs->lockDir ? bfs->lockDir : "");
140 file = fopen (cacheFilename, flags);
144 static void unlink_cache (BFiles bfs)
146 char cacheFilename[1024];
148 sprintf (cacheFilename, "%scache",
149 bfs->lockDir ? bfs->lockDir : "");
150 unlink (cacheFilename);
153 void bf_lockDir (BFiles bfs, const char *lockDir)
157 xfree (bfs->lockDir);
160 len = strlen(lockDir);
161 bfs->lockDir = (char *) xmalloc (len+2);
162 strcpy (bfs->lockDir, lockDir);
164 if (len > 0 && bfs->lockDir[len-1] != '/')
165 strcpy (bfs->lockDir + len, "/");
168 void bf_cache (BFiles bfs, const char *spec)
172 if (!bfs->commit_area)
173 bfs->commit_area = mf_init ("shadow", spec);
176 bfs->commit_area = NULL;
179 int bf_close (BFile bf)
188 BFile bf_open (BFiles bfs, const char *name, int block_size, int wflag)
190 BFile tmp = (BFile) xmalloc(sizeof(BFile_struct));
192 if (bfs->commit_area)
196 tmp->mf = mf_open (bfs->register_area, name, block_size, 0);
197 tmp->cf = cf_open (tmp->mf, bfs->commit_area, name, block_size,
203 outf = open_cache (bfs, "ab");
206 logf (LOG_FATAL|LOG_ERRNO, "open %scache",
207 bfs->lockDir ? bfs->lockDir : "");
210 fprintf (outf, "%s %d\n", name, block_size);
216 tmp->mf = mf_open(bfs->register_area, name, block_size, wflag);
221 logf (LOG_FATAL, "mf_open failed for %s", name);
228 int bf_read (BFile bf, int no, int offset, int nbytes, void *buf)
232 if (bf->cf && (r=cf_read (bf->cf, no, offset, nbytes, buf)) != -1)
234 return mf_read (bf->mf, no, offset, nbytes, buf);
237 int bf_write (BFile bf, int no, int offset, int nbytes, const void *buf)
240 return cf_write (bf->cf, no, offset, nbytes, buf);
241 return mf_write (bf->mf, no, offset, nbytes, buf);
244 int bf_commitExists (BFiles bfs)
248 inf = open_cache (bfs, "rb");
257 void bf_commitExec (BFiles bfs)
266 assert (bfs->commit_area);
267 if (!(inf = open_cache (bfs, "rb")))
269 logf (LOG_LOG, "No commit file");
272 while (fscanf (inf, "%s %d", path, &block_size) == 2)
274 mf = mf_open (bfs->register_area, path, block_size, 1);
275 cf = cf_open (mf, bfs->commit_area, path, block_size, 0, &first_time);
285 void bf_commitClean (BFiles bfs, const char *spec)
295 if (!bfs->commit_area)
297 bf_cache (bfs, spec);
301 if (!(inf = open_cache (bfs, "rb")))
303 while (fscanf (inf, "%s %d", path, &block_size) == 2)
305 mf = mf_open (bfs->register_area, path, block_size, 0);
306 cf = cf_open (mf, bfs->commit_area, path, block_size, 1, &firstTime);