2 * Copyright (C) 1994-1997, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.25 1997-10-27 14:25:38 adam
10 * Revision 1.24 1997/09/18 08:59:16 adam
11 * Extra generic handle for the character mapping routines.
13 * Revision 1.23 1997/09/17 12:19:06 adam
14 * Zebra version corresponds to YAZ version 1.4.
15 * Changed Zebra server so that it doesn't depend on global common_resource.
17 * Revision 1.22 1997/09/09 13:37:52 adam
18 * Partial port to WIN95/NT.
20 * Revision 1.21 1996/10/29 13:56:13 adam
21 * Include of zebrautl.h instead of alexutil.h.
23 * Revision 1.20 1996/03/26 15:59:04 adam
24 * The directory of the shadow table file can be specified by the new
27 * Revision 1.19 1996/02/05 12:28:58 adam
28 * Removed a LOG_LOG message.
30 * Revision 1.18 1996/01/02 08:59:06 quinn
31 * Changed "commit" setting to "shadow".
33 * Revision 1.17 1995/12/11 09:03:51 adam
34 * New function: cf_unlink.
35 * New member of commit file head: state (0) deleted, (1) hash file.
37 * Revision 1.16 1995/12/08 16:21:13 adam
38 * Work on commit/update.
40 * Revision 1.15 1995/12/01 16:24:28 adam
41 * Commit files use separate meta file area.
43 * Revision 1.14 1995/12/01 11:37:21 adam
44 * Cached/commit files implemented as meta-files.
46 * Revision 1.13 1995/11/30 17:00:49 adam
47 * Several bug fixes. Commit system runs now.
49 * Revision 1.12 1995/11/30 08:33:10 adam
50 * Started work on commit facility.
52 * Revision 1.11 1995/09/04 12:33:21 adam
53 * Various cleanup. YAZ util used instead.
55 * Revision 1.10 1994/08/25 10:15:54 quinn
58 * Revision 1.9 1994/08/24 08:45:48 quinn
61 * Revision 1.8 1994/08/23 15:03:34 quinn
62 * *** empty log message ***
64 * Revision 1.7 1994/08/23 14:25:45 quinn
65 * Added O_CREAT because some geek wanted it. Sheesh.
67 * Revision 1.6 1994/08/23 14:21:38 quinn
70 * Revision 1.5 1994/08/18 08:10:08 quinn
73 * Revision 1.4 1994/08/17 14:27:32 quinn
76 * Revision 1.2 1994/08/17 14:09:32 quinn
77 * Compiles cleanly (still only dummy).
79 * Revision 1.1 1994/08/17 13:55:08 quinn
80 * New blocksystem. dummy only
98 struct BFiles_struct {
99 MFile_area commit_area;
100 MFile_area_struct *register_area;
104 BFiles bfs_create (const char *spec)
106 BFiles bfs = xmalloc (sizeof(*bfs));
107 bfs->commit_area = NULL;
108 bfs->register_area = mf_init("register", spec);
113 void bfs_destroy (BFiles bfs)
115 xfree (bfs->lockDir);
116 mf_destroy (bfs->commit_area);
117 mf_destroy (bfs->register_area);
121 static FILE *open_cache (BFiles bfs, const char *flags)
123 char cacheFilename[1024];
126 sprintf (cacheFilename, "%scache",
127 bfs->lockDir ? bfs->lockDir : "");
128 file = fopen (cacheFilename, flags);
132 static void unlink_cache (BFiles bfs)
134 char cacheFilename[1024];
136 sprintf (cacheFilename, "%scache",
137 bfs->lockDir ? bfs->lockDir : "");
138 unlink (cacheFilename);
141 void bf_lockDir (BFiles bfs, const char *lockDir)
145 xfree (bfs->lockDir);
148 len = strlen(lockDir);
149 bfs->lockDir = xmalloc (len+2);
150 strcpy (bfs->lockDir, lockDir);
152 if (len > 0 && bfs->lockDir[len-1] != '/')
153 strcpy (bfs->lockDir + len, "/");
156 void bf_cache (BFiles bfs, const char *spec)
160 if (!bfs->commit_area)
161 bfs->commit_area = mf_init ("shadow", spec);
164 bfs->commit_area = NULL;
167 int bf_close (BFile bf)
176 BFile bf_open (BFiles bfs, const char *name, int block_size, int wflag)
178 BFile tmp = xmalloc(sizeof(BFile_struct));
180 if (bfs->commit_area)
184 tmp->mf = mf_open (bfs->register_area, name, block_size, 0);
185 tmp->cf = cf_open (tmp->mf, bfs->commit_area, name, block_size,
191 outf = open_cache (bfs, "a");
194 logf (LOG_FATAL|LOG_ERRNO, "open %scache",
195 bfs->lockDir ? bfs->lockDir : "");
198 fprintf (outf, "%s %d\n", name, block_size);
204 tmp->mf = mf_open(bfs->register_area, name, block_size, wflag);
209 logf (LOG_FATAL, "mf_open failed for %s", name);
216 int bf_read (BFile bf, int no, int offset, int num, void *buf)
220 if (bf->cf && (r=cf_read (bf->cf, no, offset, num, buf)) != -1)
222 return mf_read (bf->mf, no, offset, num, buf);
225 int bf_write (BFile bf, int no, int offset, int num, const void *buf)
228 return cf_write (bf->cf, no, offset, num, buf);
229 return mf_write (bf->mf, no, offset, num, buf);
232 int bf_commitExists (BFiles bfs)
236 inf = open_cache (bfs, "r");
245 void bf_commitExec (BFiles bfs)
254 assert (bfs->commit_area);
255 if (!(inf = open_cache (bfs, "r")))
257 logf (LOG_LOG, "No commit file");
260 while (fscanf (inf, "%s %d", path, &block_size) == 2)
262 mf = mf_open (bfs->register_area, path, block_size, 1);
263 cf = cf_open (mf, bfs->commit_area, path, block_size, 0, &first_time);
273 void bf_commitClean (BFiles bfs, const char *spec)
283 if (!bfs->commit_area)
285 bf_cache (bfs, spec);
289 if (!(inf = open_cache (bfs, "r")))
291 while (fscanf (inf, "%s %d", path, &block_size) == 2)
293 mf = mf_open (bfs->register_area, path, block_size, 0);
294 cf = cf_open (mf, bfs->commit_area, path, block_size, 1, &firstTime);