2 * Copyright (C) 1994-1998, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.8 1998-05-20 10:12:27 adam
8 * Implemented automatic EXPLAIN database maintenance.
9 * Modified Zebra to work with ASN.1 compiled version of YAZ.
11 * Revision 1.7 1998/03/11 11:19:05 adam
12 * Changed the way sequence numbers are generated.
14 * Revision 1.6 1998/02/10 12:03:06 adam
17 * Revision 1.5 1997/10/27 14:33:06 adam
18 * Moved towards generic character mapping depending on "structure"
19 * field in abstract syntax file. Fixed a few memory leaks. Fixed
20 * bug with negative integers when doing searches with relational
23 * Revision 1.4 1996/11/04 14:09:16 adam
26 * Revision 1.3 1996/11/01 09:00:33 adam
27 * This simple "text" format now supports element specs B and M.
29 * Revision 1.2 1996/10/29 14:02:45 adam
30 * Uses buffered read to speed up things.
32 * Revision 1.1 1996/10/11 10:57:28 adam
33 * New module recctrl. Used to manage records (extract/retrieval).
35 * Revision 1.7 1996/01/17 14:57:55 adam
36 * Prototype changed for reader functions in extract/retrieve. File
37 * is identified by 'void *' instead of 'int.
39 * Revision 1.6 1995/10/10 13:59:24 adam
40 * Function rset_open changed its wflag parameter to general flags.
42 * Revision 1.5 1995/10/02 16:24:39 adam
43 * Use attribute actually used in search requests.
45 * Revision 1.4 1995/10/02 15:42:55 adam
46 * Extract uses file descriptors instead of FILE pointers.
48 * Revision 1.3 1995/09/28 09:19:45 adam
49 * xfree/xmalloc used everywhere.
50 * Extract/retrieve method seems to work for text records.
52 * Revision 1.2 1995/09/15 14:45:21 adam
56 * Revision 1.1 1995/09/14 07:48:25 adam
57 * Record control management.
67 static void text_init (void)
72 struct recExtractCtrl *p;
78 struct buf_info *buf_open (struct recExtractCtrl *p)
80 struct buf_info *fi = xmalloc (sizeof(*fi));
83 fi->buf = xmalloc (4096);
89 int buf_read (struct buf_info *fi, char *dst)
91 if (fi->offset >= fi->max)
95 fi->max = (*fi->p->readf)(fi->p->fh, fi->buf, 4096);
100 *dst = fi->buf[(fi->offset)++];
104 void buf_close (struct buf_info *fi)
110 static int text_extract (struct recExtractCtrl *p)
115 struct buf_info *fi = buf_open (p);
117 (*p->init)(p, &recWord);
118 recWord.reg_type = 'w';
123 r = buf_read (fi, w);
124 while (r > 0 && i < 511 && w[i] != '\n' && w[i] != '\r')
127 r = buf_read (fi, w + i);
133 (*p->addWord)(&recWord);
140 static int text_retrieve (struct recRetrieveCtrl *p)
143 static char *text_buf = NULL;
144 static int text_size = 0;
146 const char *elementSetName = NULL;
149 if (p->comp && p->comp->which == Z_RecordComp_simple &&
150 p->comp->u.simple->which == Z_ElementSetNames_generic)
151 elementSetName = p->comp->u.simple->u.generic;
155 if (text_ptr + 4096 >= text_size)
159 text_size = 2*text_size + 8192;
160 nb = xmalloc (text_size);
163 memcpy (nb, text_buf, text_ptr);
173 sprintf (text_buf, "Rank: %d\n", p->score);
174 text_ptr = strlen(text_buf);
176 sprintf (text_buf + text_ptr, "Local Number: %d\n", p->localno);
177 text_ptr = strlen(text_buf);
179 r = (*p->readf)(p->fh, text_buf + text_ptr, 4096);
184 text_buf[text_ptr] = '\0';
187 if (!strcmp (elementSetName, "B"))
189 if (!strcmp (elementSetName, "M"))
197 while (++i <= no_lines && (p = strchr (p, '\n')))
202 text_ptr = p-text_buf;
205 p->output_format = VAL_SUTRS;
206 p->rec_buf = text_buf;
207 p->rec_len = text_ptr;
211 static struct recType text_type = {
218 RecType recTypeText = &text_type;