2 * Copyright (C) 1994-1995, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.5 1995-09-06 16:11:16 adam
8 * Option: only one word key per file.
10 * Revision 1.4 1995/09/05 15:28:39 adam
11 * More work on search engine.
13 * Revision 1.3 1995/09/04 12:33:41 adam
14 * Various cleanup. YAZ util used instead.
16 * Revision 1.2 1995/09/04 09:10:34 adam
17 * More work on index add/del/update.
18 * Merge sort implemented.
19 * Initial work on z39 server.
21 * Revision 1.1 1995/09/01 14:06:35 adam
22 * Split of work into more files.
34 #define KEY_BUF_SIZE 100000
37 static SYSNO sysno_next;
38 static int key_fd = -1;
39 static int sys_idx_fd = -1;
41 static int key_offset;
43 void key_open (const char *fname)
48 if ((key_fd = open (fname, O_RDWR|O_CREAT, 0666)) == -1)
50 logf (LOG_FATAL|LOG_ERRNO, "open %s", fname);
53 logf (LOG_DEBUG, "key_open of %s", fname);
54 if (!(key_buf = malloc (KEY_BUF_SIZE)))
56 logf (LOG_FATAL|LOG_ERRNO, "malloc");
60 if (!(file_idx = dict_open (FNAME_FILE_DICT, 40, 1)))
62 logf (LOG_FATAL, "dict_open fail of %s", "fileidx");
65 file_key = dict_lookup (file_idx, ".");
67 memcpy (&sysno_next, (char*)file_key+1, sizeof(sysno_next));
70 if ((sys_idx_fd = open (FNAME_SYS_IDX, O_RDWR|O_CREAT, 0666)) == -1)
72 logf (LOG_FATAL|LOG_ERRNO, "open %s", FNAME_SYS_IDX);
81 logf (LOG_DEBUG, "key_close - but no file");
86 dict_insert (file_idx, ".", sizeof(sysno_next), &sysno_next);
87 dict_close (file_idx);
89 logf (LOG_DEBUG, "key close - key file exist");
100 while (i < key_offset)
102 w = write (key_fd, key_buf + i, key_offset - i);
105 logf (LOG_FATAL|LOG_ERRNO, "Write key fail");
113 void key_write (int cmd, struct it_key *k, const char *str)
116 size_t slen = strlen(str);
118 if (key_offset + sizeof(*k) + slen >= KEY_BUF_SIZE - 2)
120 x = (cmd == 'a') ? 1 : 0;
121 memcpy (key_buf + key_offset, str, slen+1);
122 key_offset += slen+1;
123 memcpy (key_buf + key_offset, &x, 1);
125 memcpy (key_buf + key_offset, k, sizeof(*k));
126 key_offset += sizeof(*k);
129 void key_write_x (struct strtab *t, int cmd, struct it_key *k, const char *str)
133 if (strtab_src (t, str, &oldinfo))
134 ((struct it_key *) *oldinfo)->seqno++;
137 *oldinfo = xmalloc (sizeof(*k));
138 memcpy (*oldinfo, k, sizeof(*k));
139 ((struct it_key *) *oldinfo)->seqno = 1;
143 void key_rec_flush (const char *str, void *info, void *data)
145 key_write (*((int*) data), (struct it_key *)info, str);
149 void text_extract (struct strtab *t, SYSNO sysno, int cmd, const char *fname)
157 logf (LOG_DEBUG, "Text extract of %d", sysno);
159 inf = fopen (fname, "r");
162 logf (LOG_WARN|LOG_ERRNO, "open %s", fname);
165 while ((c=getc (inf)) != EOF)
168 while (i < 254 && c != EOF && isalnum(c))
178 #if IT_KEY_HAVE_FIELD
181 key_write_x (t, cmd, &k, w);
189 void file_extract (int cmd, const char *fname, const char *kname)
195 const char *file_type;
199 logf (LOG_DEBUG, "%c %s k=%s", cmd, fname, kname);
200 for (i = strlen(fname); --i >= 0; )
206 else if (fname[i] == '.')
208 strcpy (ext, fname+i+1);
211 sprintf (ext_res, "fileExtension.%s", ext);
212 if (!(file_type = res_get (common_resource, ext_res)))
215 file_info = dict_lookup (file_idx, kname);
218 sysno = sysno_next++;
219 dict_insert (file_idx, kname, sizeof(sysno), &sysno);
220 lseek (sys_idx_fd, sysno * SYS_IDX_ENTRY_LEN, SEEK_SET);
221 write (sys_idx_fd, kname, strlen(kname)+1);
224 memcpy (&sysno, (char*) file_info+1, sizeof(sysno));
226 if (!strcmp (file_type, "text"))
227 text_extract (t, sysno, cmd, fname);
228 strtab_del (t, key_rec_flush, &cmd);