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