2 * Copyright (C) 1994-1996, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.18 1997-09-04 13:56:15 adam
8 * Added new filter grs.marc.<syntax> where <syntax> refers to
9 * abstract syntax. New method tellf in extract/retrieve control
12 * Revision 1.17 1997/04/30 08:56:04 quinn
15 * Revision 1.16 1996/10/11 10:56:25 adam
16 * New module recctrl. Used to manage records (extract/retrieval).
17 * All record types are accessed by means of definitions in recctrl.h.
19 * Revision 1.15 1996/06/06 12:08:16 quinn
20 * Added showRecord Group entry
22 * Revision 1.14 1996/05/09 07:28:49 quinn
23 * Work towards phrases and multiple registers
25 * Revision 1.13 1996/05/01 13:44:05 adam
26 * Added seek function to the recExtractCtrl and recRetrieveCtrl control
27 * structures. Added end-of-file indicator function and start offset to
30 * Revision 1.12 1996/01/17 15:01:25 adam
31 * Prototype changed for reader functions in extract/retrieve. File
32 * is identified by 'void *' instead of 'int'.
34 * Revision 1.11 1995/12/04 14:20:54 adam
35 * Extra arg to recType_byName.
37 * Revision 1.10 1995/10/16 14:03:06 quinn
38 * Changes to support element set names and espec1
40 * Revision 1.9 1995/10/06 14:37:53 adam
41 * New result set method: r_score.
42 * Local no (sysno) and score is transferred to retrieveCtrl.
44 * Revision 1.8 1995/10/02 15:43:35 adam
45 * Extract uses file descriptors instead of FILE pointers.
47 * Revision 1.7 1995/10/02 15:18:09 adam
50 * Revision 1.6 1995/10/02 15:05:26 quinn
53 * Revision 1.5 1995/10/02 14:55:52 quinn
54 * *** empty log message ***
56 * Revision 1.4 1995/09/27 16:17:29 adam
57 * More work on retrieve.
59 * Revision 1.3 1995/09/27 12:21:25 adam
60 * New function: recType_byName.
62 * Revision 1.2 1995/09/15 14:45:03 adam
65 * Revision 1.1 1995/09/14 07:48:13 adam
66 * Record control management.
77 /* single word entity */
93 /* Extract record control */
94 struct recExtractCtrl {
95 void *fh; /* File handle and read function */
96 int (*readf)(void *fh, char *buf, size_t count);
97 off_t (*seekf)(void *fh, off_t offset); /* seek function */
98 off_t (*tellf)(void *fh); /* tell function */
99 void (*endf)(void *fh, off_t offset); /* end of record position */
100 off_t offset; /* start offset */
102 void (*init)(RecWord *p);
103 void (*add)(const RecWord *p);
104 char **(*map_chrs_input)(char **from, int len);
108 /* Retrieve record control */
109 struct recRetrieveCtrl {
110 /* Input parameters ... */
111 ODR odr; /* ODR used to create response */
112 void *fh; /* File descriptor and read function */
113 int (*readf)(void *fh, char *buf, size_t count);
114 off_t (*seekf)(void *fh, off_t offset);
115 off_t (*tellf)(void *fh);
116 oid_value input_format; /* Preferred record syntax */
117 Z_RecordComposition *comp; /* formatting instructions */
118 int localno; /* local id of record */
119 int score; /* score 0-1000 or -1 if none */
123 oid_value output_format;
130 typedef struct recType
132 char *name; /* Name of record type */
133 void (*init)(void); /* Init function - called once */
134 int (*extract)(struct recExtractCtrl *ctrl); /* Extract proc */
135 int (*retrieve)(struct recRetrieveCtrl *ctrl); /* Retrieve proc */
138 RecType recType_byName (const char *name, char *subType);