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