1 /* $Id: alvis.c,v 1.3 2005-06-23 06:45:47 adam Exp $
2 Copyright (C) 1995-2005
5 This file is part of the Zebra server.
7 Zebra is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 Zebra is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with Zebra; see the file LICENSE.zebra. If not, write to the
19 Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
28 #include <idzebra/util.h>
29 #include <idzebra/recctrl.h>
35 static void *filter_init (Res res, RecType recType)
37 struct filter_info *tinfo = (struct filter_info *) xmalloc(sizeof(*tinfo));
42 static void filter_config(void *clientData, Res res, const char *args)
47 static void filter_destroy (void *clientData)
49 struct filter_info *tinfo = clientData;
55 struct recExtractCtrl *p;
61 static struct buf_info *buf_open (struct recExtractCtrl *p)
63 struct buf_info *fi = (struct buf_info *) xmalloc (sizeof(*fi));
66 fi->buf = (char *) xmalloc (4096);
72 static int buf_read (struct filter_info *tinfo, struct buf_info *fi, char *dst)
74 if (fi->offset >= fi->max)
78 fi->max = (*fi->p->readf)(fi->p->fh, fi->buf, 4096);
83 *dst = fi->buf[(fi->offset)++];
84 if (tinfo->sep && *dst == *tinfo->sep)
86 off_t off = (*fi->p->tellf)(fi->p->fh);
87 (*fi->p->endf)(fi->p->fh, off - (fi->max - fi->offset));
93 static void buf_close (struct buf_info *fi)
99 static int filter_extract (void *clientData, struct recExtractCtrl *p)
101 struct filter_info *tinfo = clientData;
105 struct buf_info *fi = buf_open (p);
108 yaz_log(YLOG_LOG, "filter_extract off=%ld",
109 (long) (*fi->p->tellf)(fi->p->fh));
113 (*p->init)(p, &recWord);
118 r = buf_read (tinfo, fi, w);
119 while (r > 0 && i < 511 && w[i] != '\n' && w[i] != '\r')
122 r = buf_read (tinfo, fi, w + i);
126 recWord.term_buf = w;
127 recWord.term_len = i;
128 (*p->tokenAdd)(&recWord);
132 return RECCTRL_EXTRACT_OK;
135 static int filter_retrieve (void *clientData, struct recRetrieveCtrl *p)
137 int r, filter_ptr = 0;
138 static char *filter_buf = NULL;
139 static int filter_size = 0;
142 const char *elementSetName = NULL;
145 if (p->comp && p->comp->which == Z_RecordComp_simple &&
146 p->comp->u.simple->which == Z_ElementSetNames_generic)
147 elementSetName = p->comp->u.simple->u.generic;
151 /* don't make header for the R(aw) element set name */
152 if (!strcmp(elementSetName, "R"))
157 /* only make header for the H(eader) element set name */
158 else if (!strcmp(elementSetName, "H"))
166 if (filter_ptr + 4096 >= filter_size)
170 filter_size = 2*filter_size + 8192;
171 nb = (char *) xmalloc (filter_size);
174 memcpy (nb, filter_buf, filter_ptr);
179 if (make_header && filter_ptr == 0)
183 sprintf (filter_buf, "Rank: %d\n", p->score);
184 filter_ptr = strlen(filter_buf);
186 sprintf (filter_buf + filter_ptr, "Local Number: " ZINT_FORMAT "\n",
188 filter_ptr = strlen(filter_buf);
191 sprintf (filter_buf + filter_ptr, "Filename: %s\n", p->fname);
192 filter_ptr = strlen(filter_buf);
194 strcpy(filter_buf+filter_ptr++, "\n");
198 r = (*p->readf)(p->fh, filter_buf + filter_ptr, 4096);
203 filter_buf[filter_ptr] = '\0';
206 if (!strcmp (elementSetName, "B"))
208 if (!strcmp (elementSetName, "M"))
213 char *p = filter_buf;
216 while (++i <= no_lines && (p = strchr (p, '\n')))
221 filter_ptr = p-filter_buf;
224 p->output_format = VAL_SUTRS;
225 p->rec_buf = filter_buf;
226 p->rec_len = filter_ptr;
230 static struct recType filter_type = {
241 #ifdef IDZEBRA_STATIC_ALVIS