2 * Copyright (C) 1994-1997, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.15 1997-09-17 12:19:07 adam
8 * Zebra version corresponds to YAZ version 1.4.
9 * Changed Zebra server so that it doesn't depend on global common_resource.
11 * Revision 1.14 1997/09/05 15:29:58 adam
12 * Changed prototype for chr_map_input - added const.
13 * Added support for C++, headers uses extern "C" for public definitions.
15 * Revision 1.13 1996/10/29 13:43:07 adam
16 * Added a few comments.
18 * Revision 1.12 1996/03/26 16:00:44 adam
19 * The directory of the shadow table can be specified by the new
22 * Revision 1.11 1995/12/08 16:20:39 adam
23 * New commit utilities - used for 'save' update.
25 * Revision 1.10 1995/12/01 16:24:33 adam
26 * Commit files use separate meta file area.
28 * Revision 1.9 1995/12/01 11:37:46 adam
29 * Cached/commit files implemented as meta-files.
31 * Revision 1.8 1995/11/30 08:33:29 adam
32 * Started work on commit facility.
34 * Revision 1.7 1995/09/04 12:33:35 adam
35 * Various cleanup. YAZ util used instead.
37 * Revision 1.6 1994/09/14 13:10:35 quinn
40 * Revision 1.5 1994/08/24 08:45:52 quinn
43 * Revision 1.4 1994/08/17 15:38:28 adam
46 * Revision 1.3 1994/08/17 14:09:47 quinn
60 #define bf_blocksize(bf) mf_blocksize(bf->mf)
62 typedef struct BFiles_struct *BFiles;
64 BFiles bfs_create (const char *spec);
65 void bfs_destroy (BFiles bfiles);
67 typedef struct BFile_struct
70 struct CFile_struct *cf;
71 } *BFile, BFile_struct;
73 /* bf_close: closes bfile.
74 returns 0 if successful; non-zero otherwise
78 /* bf_open: opens bfile.
79 opens bfile with name 'name' and with 'block_size' as block size.
80 returns bfile handle is successful; NULL otherwise
82 BFile bf_open (BFiles bfs, const char *name, int block_size, int wflag);
84 /* bf_read: reads bytes from bfile 'bf'.
85 reads 'num' bytes (or whole block if 0) from offset 'offset' from
86 block 'no'. stores contents in buffer 'buf'.
87 returns 1 if whole block could be read; 0 otherwise.
89 int bf_read (BFile bf, int no, int offset, int num, void *buf);
91 /* bf_write: writes bytes to bfile 'bf'.
92 writes 'num' bytes (or whole block if 0) at offset 'offset' to
93 block 'no'. retrieves contents from buffer 'buf'.
94 returns 0 if successful; non-zero otherwise.
96 int bf_write (BFile bf, int no, int offset, int num, const void *buf);
98 /* bf_cache: enables bfile cache if spec is not NULL */
99 void bf_cache (BFiles bfs, const char *spec);
101 /* bf_lockDir: specifies locking directory for the cache system */
102 void bf_lockDir (BFiles bfs, const char *lockDir);
104 /* bf_commitExists: returns 1 if commit is pending; 0 otherwise */
105 int bf_commitExists (BFiles bfs);
107 /* bf_commitExec: executes commit */
108 void bf_commitExec (BFiles bfs);
110 /* bf_commitClean: cleans commit files, etc */
111 void bf_commitClean (BFiles bfs, const char *spec);