2 * Copyright (C) 1994-1995, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.14 1996-05-09 07:28:49 quinn
8 * Work towards phrases and multiple registers
10 * Revision 1.13 1996/05/01 13:44:05 adam
11 * Added seek function to the recExtractCtrl and recRetrieveCtrl control
12 * structures. Added end-of-file indicator function and start offset to
15 * Revision 1.12 1996/01/17 15:01:25 adam
16 * Prototype changed for reader functions in extract/retrieve. File
17 * is identified by 'void *' instead of 'int'.
19 * Revision 1.11 1995/12/04 14:20:54 adam
20 * Extra arg to recType_byName.
22 * Revision 1.10 1995/10/16 14:03:06 quinn
23 * Changes to support element set names and espec1
25 * Revision 1.9 1995/10/06 14:37:53 adam
26 * New result set method: r_score.
27 * Local no (sysno) and score is transferred to retrieveCtrl.
29 * Revision 1.8 1995/10/02 15:43:35 adam
30 * Extract uses file descriptors instead of FILE pointers.
32 * Revision 1.7 1995/10/02 15:18:09 adam
35 * Revision 1.6 1995/10/02 15:05:26 quinn
38 * Revision 1.5 1995/10/02 14:55:52 quinn
39 * *** empty log message ***
41 * Revision 1.4 1995/09/27 16:17:29 adam
42 * More work on retrieve.
44 * Revision 1.3 1995/09/27 12:21:25 adam
45 * New function: recType_byName.
47 * Revision 1.2 1995/09/15 14:45:03 adam
50 * Revision 1.1 1995/09/14 07:48:13 adam
51 * Record control management.
62 /* single word entity */
78 /* Extract record control */
79 struct recExtractCtrl {
80 void *fh; /* File handle and read function */
81 int (*readf)(void *fh, char *buf, size_t count);
82 off_t (*seekf)(void *fh, off_t offset); /* seek function */
83 void (*endf)(void *fh, off_t offset); /* end of record position */
84 off_t offset; /* start offset */
86 void (*init)(RecWord *p);
87 void (*add)(const RecWord *p);
90 /* Retrieve record control */
91 struct recRetrieveCtrl {
92 /* Input parameters ... */
93 ODR odr; /* ODR used to create response */
94 void *fh; /* File descriptor and read function */
95 int (*readf)(void *fh, char *buf, size_t count);
96 off_t (*seekf)(void *fh, off_t offset);
97 oid_value input_format; /* Preferred record syntax */
98 Z_RecordComposition *comp; /* formatting instructions */
99 int localno; /* local id of record */
100 int score; /* score 0-1000 or -1 if none */
104 oid_value output_format;
111 typedef struct recType
113 char *name; /* Name of record type */
114 void (*init)(void); /* Init function - called once */
115 int (*extract)(struct recExtractCtrl *ctrl); /* Extract proc */
116 int (*retrieve)(struct recRetrieveCtrl *ctrl); /* Retrieve proc */
119 RecType recType_byName (const char *name, char *subType);