2 * Copyright (C) 1994-1996, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.16 1996-10-11 10:56:25 adam
8 * New module recctrl. Used to manage records (extract/retrieval).
9 * All record types are accessed by means of definitions in recctrl.h.
11 * Revision 1.15 1996/06/06 12:08:16 quinn
12 * Added showRecord Group entry
14 * Revision 1.14 1996/05/09 07:28:49 quinn
15 * Work towards phrases and multiple registers
17 * Revision 1.13 1996/05/01 13:44:05 adam
18 * Added seek function to the recExtractCtrl and recRetrieveCtrl control
19 * structures. Added end-of-file indicator function and start offset to
22 * Revision 1.12 1996/01/17 15:01:25 adam
23 * Prototype changed for reader functions in extract/retrieve. File
24 * is identified by 'void *' instead of 'int'.
26 * Revision 1.11 1995/12/04 14:20:54 adam
27 * Extra arg to recType_byName.
29 * Revision 1.10 1995/10/16 14:03:06 quinn
30 * Changes to support element set names and espec1
32 * Revision 1.9 1995/10/06 14:37:53 adam
33 * New result set method: r_score.
34 * Local no (sysno) and score is transferred to retrieveCtrl.
36 * Revision 1.8 1995/10/02 15:43:35 adam
37 * Extract uses file descriptors instead of FILE pointers.
39 * Revision 1.7 1995/10/02 15:18:09 adam
42 * Revision 1.6 1995/10/02 15:05:26 quinn
45 * Revision 1.5 1995/10/02 14:55:52 quinn
46 * *** empty log message ***
48 * Revision 1.4 1995/09/27 16:17:29 adam
49 * More work on retrieve.
51 * Revision 1.3 1995/09/27 12:21:25 adam
52 * New function: recType_byName.
54 * Revision 1.2 1995/09/15 14:45:03 adam
57 * Revision 1.1 1995/09/14 07:48:13 adam
58 * Record control management.
69 /* single word entity */
85 /* Extract record control */
86 struct recExtractCtrl {
87 void *fh; /* File handle and read function */
88 int (*readf)(void *fh, char *buf, size_t count);
89 off_t (*seekf)(void *fh, off_t offset); /* seek function */
90 void (*endf)(void *fh, off_t offset); /* end of record position */
91 off_t offset; /* start offset */
93 void (*init)(RecWord *p);
94 void (*add)(const RecWord *p);
95 char **(*map_chrs_input)(char **from, int len);
99 /* Retrieve record control */
100 struct recRetrieveCtrl {
101 /* Input parameters ... */
102 ODR odr; /* ODR used to create response */
103 void *fh; /* File descriptor and read function */
104 int (*readf)(void *fh, char *buf, size_t count);
105 off_t (*seekf)(void *fh, off_t offset);
106 oid_value input_format; /* Preferred record syntax */
107 Z_RecordComposition *comp; /* formatting instructions */
108 int localno; /* local id of record */
109 int score; /* score 0-1000 or -1 if none */
113 oid_value output_format;
120 typedef struct recType
122 char *name; /* Name of record type */
123 void (*init)(void); /* Init function - called once */
124 int (*extract)(struct recExtractCtrl *ctrl); /* Extract proc */
125 int (*retrieve)(struct recRetrieveCtrl *ctrl); /* Retrieve proc */
128 RecType recType_byName (const char *name, char *subType);