2 * Copyright (C) 1994-1997, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.24 1997-09-18 08:59:16 adam
8 * Extra generic handle for the character mapping routines.
10 * Revision 1.23 1997/09/17 12:19:06 adam
11 * Zebra version corresponds to YAZ version 1.4.
12 * Changed Zebra server so that it doesn't depend on global common_resource.
14 * Revision 1.22 1997/09/09 13:37:52 adam
15 * Partial port to WIN95/NT.
17 * Revision 1.21 1996/10/29 13:56:13 adam
18 * Include of zebrautl.h instead of alexutil.h.
20 * Revision 1.20 1996/03/26 15:59:04 adam
21 * The directory of the shadow table file can be specified by the new
24 * Revision 1.19 1996/02/05 12:28:58 adam
25 * Removed a LOG_LOG message.
27 * Revision 1.18 1996/01/02 08:59:06 quinn
28 * Changed "commit" setting to "shadow".
30 * Revision 1.17 1995/12/11 09:03:51 adam
31 * New function: cf_unlink.
32 * New member of commit file head: state (0) deleted, (1) hash file.
34 * Revision 1.16 1995/12/08 16:21:13 adam
35 * Work on commit/update.
37 * Revision 1.15 1995/12/01 16:24:28 adam
38 * Commit files use separate meta file area.
40 * Revision 1.14 1995/12/01 11:37:21 adam
41 * Cached/commit files implemented as meta-files.
43 * Revision 1.13 1995/11/30 17:00:49 adam
44 * Several bug fixes. Commit system runs now.
46 * Revision 1.12 1995/11/30 08:33:10 adam
47 * Started work on commit facility.
49 * Revision 1.11 1995/09/04 12:33:21 adam
50 * Various cleanup. YAZ util used instead.
52 * Revision 1.10 1994/08/25 10:15:54 quinn
55 * Revision 1.9 1994/08/24 08:45:48 quinn
58 * Revision 1.8 1994/08/23 15:03:34 quinn
59 * *** empty log message ***
61 * Revision 1.7 1994/08/23 14:25:45 quinn
62 * Added O_CREAT because some geek wanted it. Sheesh.
64 * Revision 1.6 1994/08/23 14:21:38 quinn
67 * Revision 1.5 1994/08/18 08:10:08 quinn
70 * Revision 1.4 1994/08/17 14:27:32 quinn
73 * Revision 1.2 1994/08/17 14:09:32 quinn
74 * Compiles cleanly (still only dummy).
76 * Revision 1.1 1994/08/17 13:55:08 quinn
77 * New blocksystem. dummy only
95 struct BFiles_struct {
96 MFile_area commit_area;
97 MFile_area_struct *register_area;
101 BFiles bfs_create (const char *spec)
103 BFiles bfs = xmalloc (sizeof(*bfs));
104 bfs->commit_area = NULL;
105 bfs->register_area = mf_init("register", spec);
110 void bfs_destroy (BFiles bfs)
112 mf_destroy (bfs->commit_area);
113 mf_destroy (bfs->register_area);
117 static FILE *open_cache (BFiles bfs, const char *flags)
119 char cacheFilename[1024];
122 sprintf (cacheFilename, "%scache",
123 bfs->lockDir ? bfs->lockDir : "");
124 file = fopen (cacheFilename, flags);
128 static void unlink_cache (BFiles bfs)
130 char cacheFilename[1024];
132 sprintf (cacheFilename, "%scache",
133 bfs->lockDir ? bfs->lockDir : "");
134 unlink (cacheFilename);
137 void bf_lockDir (BFiles bfs, const char *lockDir)
141 xfree (bfs->lockDir);
144 len = strlen(lockDir);
145 bfs->lockDir = xmalloc (len+2);
146 strcpy (bfs->lockDir, lockDir);
148 if (len > 0 && bfs->lockDir[len-1] != '/')
149 strcpy (bfs->lockDir + len, "/");
152 void bf_cache (BFiles bfs, const char *spec)
156 if (!bfs->commit_area)
157 bfs->commit_area = mf_init ("shadow", spec);
160 bfs->commit_area = NULL;
163 int bf_close (BFile bf)
172 BFile bf_open (BFiles bfs, const char *name, int block_size, int wflag)
174 BFile tmp = xmalloc(sizeof(BFile_struct));
176 if (bfs->commit_area)
180 tmp->mf = mf_open (bfs->register_area, name, block_size, 0);
181 tmp->cf = cf_open (tmp->mf, bfs->commit_area, name, block_size,
187 outf = open_cache (bfs, "a");
190 logf (LOG_FATAL|LOG_ERRNO, "open %scache",
191 bfs->lockDir ? bfs->lockDir : "");
194 fprintf (outf, "%s %d\n", name, block_size);
200 tmp->mf = mf_open(bfs->register_area, name, block_size, wflag);
205 logf (LOG_FATAL, "mf_open failed for %s", name);
212 int bf_read (BFile bf, int no, int offset, int num, void *buf)
216 if (bf->cf && (r=cf_read (bf->cf, no, offset, num, buf)) != -1)
218 return mf_read (bf->mf, no, offset, num, buf);
221 int bf_write (BFile bf, int no, int offset, int num, const void *buf)
224 return cf_write (bf->cf, no, offset, num, buf);
225 return mf_write (bf->mf, no, offset, num, buf);
228 int bf_commitExists (BFiles bfs)
232 inf = open_cache (bfs, "r");
241 void bf_commitExec (BFiles bfs)
250 assert (bfs->commit_area);
251 if (!(inf = open_cache (bfs, "r")))
253 logf (LOG_LOG, "No commit file");
256 while (fscanf (inf, "%s %d", path, &block_size) == 2)
258 mf = mf_open (bfs->register_area, path, block_size, 1);
259 cf = cf_open (mf, bfs->commit_area, path, block_size, 0, &first_time);
269 void bf_commitClean (BFiles bfs, const char *spec)
279 if (!bfs->commit_area)
281 bf_cache (bfs, spec);
285 if (!(inf = open_cache (bfs, "r")))
287 while (fscanf (inf, "%s %d", path, &block_size) == 2)
289 mf = mf_open (bfs->register_area, path, block_size, 0);
290 cf = cf_open (mf, bfs->commit_area, path, block_size, 1, &firstTime);