2 * Copyright (C) 1994-1999, Index Data
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.31 1999-12-08 15:03:11 adam
8 * Implemented bf_reset.
10 * Revision 1.30 1999/10/14 14:33:49 adam
11 * Added truncation 5=106.
13 * Revision 1.29 1999/05/26 07:49:12 adam
16 * Revision 1.28 1999/05/12 13:08:05 adam
17 * First version of ISAMS.
19 * Revision 1.27 1999/02/02 14:50:01 adam
20 * Updated WIN32 code specific sections. Changed header.
22 * Revision 1.26 1998/02/17 10:32:52 adam
23 * Fixed bug: binary files weren't opened with flag b on NT.
25 * Revision 1.25 1997/10/27 14:25:38 adam
28 * Revision 1.24 1997/09/18 08:59:16 adam
29 * Extra generic handle for the character mapping routines.
31 * Revision 1.23 1997/09/17 12:19:06 adam
32 * Zebra version corresponds to YAZ version 1.4.
33 * Changed Zebra server so that it doesn't depend on global common_resource.
35 * Revision 1.22 1997/09/09 13:37:52 adam
36 * Partial port to WIN95/NT.
38 * Revision 1.21 1996/10/29 13:56:13 adam
39 * Include of zebrautl.h instead of alexutil.h.
41 * Revision 1.20 1996/03/26 15:59:04 adam
42 * The directory of the shadow table file can be specified by the new
45 * Revision 1.19 1996/02/05 12:28:58 adam
46 * Removed a LOG_LOG message.
48 * Revision 1.18 1996/01/02 08:59:06 quinn
49 * Changed "commit" setting to "shadow".
51 * Revision 1.17 1995/12/11 09:03:51 adam
52 * New function: cf_unlink.
53 * New member of commit file head: state (0) deleted, (1) hash file.
55 * Revision 1.16 1995/12/08 16:21:13 adam
56 * Work on commit/update.
58 * Revision 1.15 1995/12/01 16:24:28 adam
59 * Commit files use separate meta file area.
61 * Revision 1.14 1995/12/01 11:37:21 adam
62 * Cached/commit files implemented as meta-files.
64 * Revision 1.13 1995/11/30 17:00:49 adam
65 * Several bug fixes. Commit system runs now.
67 * Revision 1.12 1995/11/30 08:33:10 adam
68 * Started work on commit facility.
70 * Revision 1.11 1995/09/04 12:33:21 adam
71 * Various cleanup. YAZ util used instead.
73 * Revision 1.10 1994/08/25 10:15:54 quinn
76 * Revision 1.9 1994/08/24 08:45:48 quinn
79 * Revision 1.8 1994/08/23 15:03:34 quinn
80 * *** empty log message ***
82 * Revision 1.7 1994/08/23 14:25:45 quinn
83 * Added O_CREAT because some geek wanted it. Sheesh.
85 * Revision 1.6 1994/08/23 14:21:38 quinn
88 * Revision 1.5 1994/08/18 08:10:08 quinn
91 * Revision 1.4 1994/08/17 14:27:32 quinn
94 * Revision 1.2 1994/08/17 14:09:32 quinn
95 * Compiles cleanly (still only dummy).
97 * Revision 1.1 1994/08/17 13:55:08 quinn
98 * New blocksystem. dummy only
112 #include <zebrautl.h>
116 struct BFiles_struct {
117 MFile_area commit_area;
118 MFile_area_struct *register_area;
122 BFiles bfs_create (const char *spec)
124 BFiles bfs = (BFiles) xmalloc (sizeof(*bfs));
125 bfs->commit_area = NULL;
126 bfs->register_area = mf_init("register", spec);
128 if (!bfs->register_area)
136 void bfs_destroy (BFiles bfs)
138 xfree (bfs->lockDir);
139 mf_destroy (bfs->commit_area);
140 mf_destroy (bfs->register_area);
144 static FILE *open_cache (BFiles bfs, const char *flags)
146 char cacheFilename[1024];
149 sprintf (cacheFilename, "%scache",
150 bfs->lockDir ? bfs->lockDir : "");
151 file = fopen (cacheFilename, flags);
155 static void unlink_cache (BFiles bfs)
157 char cacheFilename[1024];
159 sprintf (cacheFilename, "%scache",
160 bfs->lockDir ? bfs->lockDir : "");
161 unlink (cacheFilename);
164 void bf_lockDir (BFiles bfs, const char *lockDir)
168 xfree (bfs->lockDir);
171 len = strlen(lockDir);
172 bfs->lockDir = (char *) xmalloc (len+2);
173 strcpy (bfs->lockDir, lockDir);
175 if (len > 0 && bfs->lockDir[len-1] != '/')
176 strcpy (bfs->lockDir + len, "/");
179 void bf_cache (BFiles bfs, const char *spec)
183 if (!bfs->commit_area)
184 bfs->commit_area = mf_init ("shadow", spec);
187 bfs->commit_area = NULL;
190 int bf_close (BFile bf)
199 BFile bf_open (BFiles bfs, const char *name, int block_size, int wflag)
201 BFile tmp = (BFile) xmalloc(sizeof(BFile_struct));
203 if (bfs->commit_area)
207 tmp->mf = mf_open (bfs->register_area, name, block_size, 0);
208 tmp->cf = cf_open (tmp->mf, bfs->commit_area, name, block_size,
214 outf = open_cache (bfs, "ab");
217 logf (LOG_FATAL|LOG_ERRNO, "open %scache",
218 bfs->lockDir ? bfs->lockDir : "");
221 fprintf (outf, "%s %d\n", name, block_size);
227 tmp->mf = mf_open(bfs->register_area, name, block_size, wflag);
232 logf (LOG_FATAL, "mf_open failed for %s", name);
239 int bf_read (BFile bf, int no, int offset, int nbytes, void *buf)
243 if (bf->cf && (r=cf_read (bf->cf, no, offset, nbytes, buf)) != -1)
245 return mf_read (bf->mf, no, offset, nbytes, buf);
248 int bf_write (BFile bf, int no, int offset, int nbytes, const void *buf)
251 return cf_write (bf->cf, no, offset, nbytes, buf);
252 return mf_write (bf->mf, no, offset, nbytes, buf);
255 int bf_commitExists (BFiles bfs)
259 inf = open_cache (bfs, "rb");
268 void bf_reset (BFiles bfs)
270 mf_reset (bfs->commit_area);
271 mf_reset (bfs->register_area);
274 void bf_commitExec (BFiles bfs)
283 assert (bfs->commit_area);
284 if (!(inf = open_cache (bfs, "rb")))
286 logf (LOG_LOG, "No commit file");
289 while (fscanf (inf, "%s %d", path, &block_size) == 2)
291 mf = mf_open (bfs->register_area, path, block_size, 1);
292 cf = cf_open (mf, bfs->commit_area, path, block_size, 0, &first_time);
302 void bf_commitClean (BFiles bfs, const char *spec)
312 if (!bfs->commit_area)
314 bf_cache (bfs, spec);
318 if (!(inf = open_cache (bfs, "rb")))
320 while (fscanf (inf, "%s %d", path, &block_size) == 2)
322 mf = mf_open (bfs->register_area, path, block_size, 0);
323 cf = cf_open (mf, bfs->commit_area, path, block_size, 1, &firstTime);