2 * Copyright (C) 1994-1995, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.8 1995-09-14 07:48:22 adam
8 * Record control management.
10 * Revision 1.7 1995/09/11 13:09:32 adam
11 * More work on relevance feedback.
13 * Revision 1.6 1995/09/08 14:52:27 adam
14 * Minor changes. Dictionary is lower case now.
16 * Revision 1.5 1995/09/06 16:11:16 adam
17 * Option: only one word key per file.
19 * Revision 1.4 1995/09/05 15:28:39 adam
20 * More work on search engine.
22 * Revision 1.3 1995/09/04 12:33:41 adam
23 * Various cleanup. YAZ util used instead.
25 * Revision 1.2 1995/09/04 09:10:34 adam
26 * More work on index add/del/update.
27 * Merge sort implemented.
28 * Initial work on z39 server.
30 * Revision 1.1 1995/09/01 14:06:35 adam
31 * Split of work into more files.
45 static SYSNO sysno_next;
46 static int key_fd = -1;
47 static int sys_idx_fd = -1;
49 static int key_offset, key_buf_size;
53 void key_open (const char *fname)
58 if ((key_fd = open (fname, O_RDWR|O_CREAT, 0666)) == -1)
60 logf (LOG_FATAL|LOG_ERRNO, "open %s", fname);
63 logf (LOG_DEBUG, "key_open of %s", fname);
65 key_buf = xmalloc (key_buf_size);
67 if (!(file_idx = dict_open (FNAME_FILE_DICT, 40, 1)))
69 logf (LOG_FATAL, "dict_open fail of %s", "fileidx");
72 file_key = dict_lookup (file_idx, ".");
74 memcpy (&sysno_next, (char*)file_key+1, sizeof(sysno_next));
77 if ((sys_idx_fd = open (FNAME_SYS_IDX, O_RDWR|O_CREAT, 0666)) == -1)
79 logf (LOG_FATAL|LOG_ERRNO, "open %s", FNAME_SYS_IDX);
88 logf (LOG_DEBUG, "key_close - but no file");
93 dict_insert (file_idx, ".", sizeof(sysno_next), &sysno_next);
94 dict_close (file_idx);
100 void wordFlush (int sysno)
107 while (i < key_offset)
109 w = write (key_fd, key_buf + i, key_offset - i);
112 logf (LOG_FATAL|LOG_ERRNO, "Write key fail");
120 static void wordInit (RecWord *p)
124 p->which = Word_String;
127 static void wordAdd (const RecWord *p)
133 if (key_offset + 1000 > key_buf_size)
138 new_key_buf = xmalloc (2*key_buf_size);
139 memcpy (new_key_buf, key_buf, key_offset);
141 key_buf = new_key_buf;
146 for (i = 0; p->u.string[i]; i++)
147 key_buf[key_offset++] = index_char_cvt (p->u.string[i]);
148 key_buf[key_offset++] = '\0';
153 x = (key_cmd == 'a') ? 1 : 0;
154 memcpy (key_buf + key_offset, &x, 1);
157 key.sysno = key_sysno;
158 key.attrSet = p->attrSet;
159 key.attrUse = p->attrUse;
160 key.seqno = p->seqno;
161 memcpy (key_buf + key_offset, &key, sizeof(key));
162 key_offset += sizeof(key);
165 void file_extract (int cmd, const char *fname, const char *kname)
171 const char *file_type;
174 struct recExtractCtrl extractCtrl;
177 logf (LOG_DEBUG, "%c %s k=%s", cmd, fname, kname);
178 for (i = strlen(fname); --i >= 0; )
184 else if (fname[i] == '.')
186 strcpy (ext, fname+i+1);
189 sprintf (ext_res, "fileExtension.%s", ext);
190 if (!(file_type = res_get (common_resource, ext_res)))
193 file_info = dict_lookup (file_idx, kname);
196 sysno = sysno_next++;
197 dict_insert (file_idx, kname, sizeof(sysno), &sysno);
198 lseek (sys_idx_fd, sysno * SYS_IDX_ENTRY_LEN, SEEK_SET);
199 write (sys_idx_fd, kname, strlen(kname)+1);
202 memcpy (&sysno, (char*) file_info+1, sizeof(sysno));
204 if (!(inf = fopen (fname, "r")))
206 logf (LOG_WARN|LOG_ERRNO, "open %s", fname);
209 if (!strcmp (file_type, "text"))
213 extractCtrl.inf = inf;
214 extractCtrl.subType = "";
215 extractCtrl.init = wordInit;
216 extractCtrl.add = wordAdd;
219 (*rt->extract)(&extractCtrl);