2 * Copyright (C) 1994-1995, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.5 1997-10-27 14:33:06 adam
8 * Moved towards generic character mapping depending on "structure"
9 * field in abstract syntax file. Fixed a few memory leaks. Fixed
10 * bug with negative integers when doing searches with relational
13 * Revision 1.4 1996/11/04 14:09:16 adam
16 * Revision 1.3 1996/11/01 09:00:33 adam
17 * This simple "text" format now supports element specs B and M.
19 * Revision 1.2 1996/10/29 14:02:45 adam
20 * Uses buffered read to speed up things.
22 * Revision 1.1 1996/10/11 10:57:28 adam
23 * New module recctrl. Used to manage records (extract/retrieval).
25 * Revision 1.7 1996/01/17 14:57:55 adam
26 * Prototype changed for reader functions in extract/retrieve. File
27 * is identified by 'void *' instead of 'int.
29 * Revision 1.6 1995/10/10 13:59:24 adam
30 * Function rset_open changed its wflag parameter to general flags.
32 * Revision 1.5 1995/10/02 16:24:39 adam
33 * Use attribute actually used in search requests.
35 * Revision 1.4 1995/10/02 15:42:55 adam
36 * Extract uses file descriptors instead of FILE pointers.
38 * Revision 1.3 1995/09/28 09:19:45 adam
39 * xfree/xmalloc used everywhere.
40 * Extract/retrieve method seems to work for text records.
42 * Revision 1.2 1995/09/15 14:45:21 adam
46 * Revision 1.1 1995/09/14 07:48:25 adam
47 * Record control management.
57 static void text_init (void)
62 struct recExtractCtrl *p;
68 struct buf_info *buf_open (struct recExtractCtrl *p)
70 struct buf_info *fi = xmalloc (sizeof(*fi));
73 fi->buf = xmalloc (4096);
79 int buf_read (struct buf_info *fi, char *dst)
81 if (fi->offset >= fi->max)
85 fi->max = (*fi->p->readf)(fi->p->fh, fi->buf, 4096);
90 *dst = fi->buf[(fi->offset)++];
94 void buf_close (struct buf_info *fi)
100 static int text_extract (struct recExtractCtrl *p)
105 struct buf_info *fi = buf_open (p);
107 (*p->init)(&recWord);
108 recWord.reg_type = 'w';
113 r = buf_read (fi, w);
114 while (r > 0 && i < 255 && isalnum(w[i]))
117 r = buf_read (fi, w + i);
122 for (j = 0; j<i; j++)
123 w[j] = tolower(w[j]);
125 recWord.seqno = seqno++;
134 static int text_retrieve (struct recRetrieveCtrl *p)
137 static char *text_buf = NULL;
138 static int text_size = 0;
140 const char *elementSetName = NULL;
143 if (p->comp && p->comp->which == Z_RecordComp_simple &&
144 p->comp->u.simple->which == Z_ElementSetNames_generic)
145 elementSetName = p->comp->u.simple->u.generic;
149 if (text_ptr + 4096 >= text_size)
153 text_size = 2*text_size + 8192;
154 nb = xmalloc (text_size);
157 memcpy (nb, text_buf, text_ptr);
167 sprintf (text_buf, "Rank: %d\n", p->score);
168 text_ptr = strlen(text_buf);
170 sprintf (text_buf + text_ptr, "Local Number: %d\n", p->localno);
171 text_ptr = strlen(text_buf);
173 r = (*p->readf)(p->fh, text_buf + text_ptr, 4096);
178 text_buf[text_ptr] = '\0';
181 if (!strcmp (elementSetName, "B"))
183 if (!strcmp (elementSetName, "M"))
191 while (++i <= no_lines && (p = strchr (p, '\n')))
196 text_ptr = p-text_buf;
199 p->output_format = VAL_SUTRS;
200 p->rec_buf = text_buf;
201 p->rec_len = text_ptr;
205 static struct recType text_type = {
212 RecType recTypeText = &text_type;