2 * Copyright (C) 1994-1997, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.19 1997-09-05 15:30:02 adam
8 * Changed prototype for chr_map_input - added const.
9 * Added support for C++, headers uses extern "C" for public definitions.
11 * Revision 1.18 1997/09/04 13:56:15 adam
12 * Added new filter grs.marc.<syntax> where <syntax> refers to
13 * abstract syntax. New method tellf in extract/retrieve control
16 * Revision 1.17 1997/04/30 08:56:04 quinn
19 * Revision 1.16 1996/10/11 10:56:25 adam
20 * New module recctrl. Used to manage records (extract/retrieval).
21 * All record types are accessed by means of definitions in recctrl.h.
23 * Revision 1.15 1996/06/06 12:08:16 quinn
24 * Added showRecord Group entry
26 * Revision 1.14 1996/05/09 07:28:49 quinn
27 * Work towards phrases and multiple registers
29 * Revision 1.13 1996/05/01 13:44:05 adam
30 * Added seek function to the recExtractCtrl and recRetrieveCtrl control
31 * structures. Added end-of-file indicator function and start offset to
34 * Revision 1.12 1996/01/17 15:01:25 adam
35 * Prototype changed for reader functions in extract/retrieve. File
36 * is identified by 'void *' instead of 'int'.
38 * Revision 1.11 1995/12/04 14:20:54 adam
39 * Extra arg to recType_byName.
41 * Revision 1.10 1995/10/16 14:03:06 quinn
42 * Changes to support element set names and espec1
44 * Revision 1.9 1995/10/06 14:37:53 adam
45 * New result set method: r_score.
46 * Local no (sysno) and score is transferred to retrieveCtrl.
48 * Revision 1.8 1995/10/02 15:43:35 adam
49 * Extract uses file descriptors instead of FILE pointers.
51 * Revision 1.7 1995/10/02 15:18:09 adam
54 * Revision 1.6 1995/10/02 15:05:26 quinn
57 * Revision 1.5 1995/10/02 14:55:52 quinn
58 * *** empty log message ***
60 * Revision 1.4 1995/09/27 16:17:29 adam
61 * More work on retrieve.
63 * Revision 1.3 1995/09/27 12:21:25 adam
64 * New function: recType_byName.
66 * Revision 1.2 1995/09/15 14:45:03 adam
69 * Revision 1.1 1995/09/14 07:48:13 adam
70 * Record control management.
91 /* single word entity */
110 /* Extract record control */
111 struct recExtractCtrl {
112 void *fh; /* File handle and read function */
113 int (*readf)(void *fh, char *buf, size_t count);
114 off_t (*seekf)(void *fh, off_t offset); /* seek function */
115 off_t (*tellf)(void *fh); /* tell function */
116 void (*endf)(void *fh, off_t offset); /* end of record position */
117 off_t offset; /* start offset */
119 void (*init)(RecWord *p);
120 void (*add)(const RecWord *p);
121 const char **(*map_chrs_input)(const char **from, int len);
125 /* Retrieve record control */
126 struct recRetrieveCtrl {
127 /* Input parameters ... */
128 ODR odr; /* ODR used to create response */
129 void *fh; /* File descriptor and read function */
130 int (*readf)(void *fh, char *buf, size_t count);
131 off_t (*seekf)(void *fh, off_t offset);
132 off_t (*tellf)(void *fh);
133 oid_value input_format; /* Preferred record syntax */
134 Z_RecordComposition *comp; /* formatting instructions */
135 int localno; /* local id of record */
136 int score; /* score 0-1000 or -1 if none */
140 oid_value output_format;
147 typedef struct recType
149 char *name; /* Name of record type */
150 void (*init)(void); /* Init function - called once */
151 int (*extract)(struct recExtractCtrl *ctrl); /* Extract proc */
152 int (*retrieve)(struct recRetrieveCtrl *ctrl); /* Retrieve proc */
155 RecType recType_byName (const char *name, char *subType);