2 * Copyright (C) 1995, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.4 1995-09-05 15:28:39 adam
8 * More work on search engine.
10 * Revision 1.3 1995/09/04 12:33:41 adam
11 * Various cleanup. YAZ util used instead.
13 * Revision 1.2 1995/09/04 09:10:34 adam
14 * More work on index add/del/update.
15 * Merge sort implemented.
16 * Initial work on z39 server.
18 * Revision 1.1 1995/09/01 14:06:35 adam
19 * Split of work into more files.
31 #define KEY_BUF_SIZE 100000
34 static SYSNO sysno_next;
35 static int key_fd = -1;
36 static int sys_idx_fd = -1;
38 static int key_offset;
40 void key_open (const char *fname)
45 if ((key_fd = open (fname, O_RDWR|O_CREAT, 0666)) == -1)
47 logf (LOG_FATAL|LOG_ERRNO, "open %s", fname);
50 logf (LOG_DEBUG, "key_open of %s", fname);
51 if (!(key_buf = malloc (KEY_BUF_SIZE)))
53 logf (LOG_FATAL|LOG_ERRNO, "malloc");
57 if (!(file_idx = dict_open (FNAME_FILE_DICT, 10, 1)))
59 logf (LOG_FATAL, "dict_open fail of %s", "fileidx");
62 file_key = dict_lookup (file_idx, ".");
64 memcpy (&sysno_next, (char*)file_key+1, sizeof(sysno_next));
67 if ((sys_idx_fd = open (FNAME_SYS_IDX, O_RDWR|O_CREAT, 0666)) == -1)
69 logf (LOG_FATAL|LOG_ERRNO, "open %s", FNAME_SYS_IDX);
78 logf (LOG_DEBUG, "key_close - but no file");
83 dict_insert (file_idx, ".", sizeof(sysno_next), &sysno_next);
84 dict_close (file_idx);
86 logf (LOG_DEBUG, "key close - key file exist");
97 while (i < key_offset)
99 w = write (key_fd, key_buf + i, key_offset - i);
102 logf (LOG_FATAL|LOG_ERRNO, "Write key fail");
110 void key_write (int cmd, struct it_key *k, const char *str)
113 size_t slen = strlen(str);
115 if (key_offset + sizeof(*k) + slen >= KEY_BUF_SIZE - 2)
117 x = (cmd == 'a') ? 1 : 0;
118 memcpy (key_buf + key_offset, str, slen+1);
119 key_offset += slen+1;
120 memcpy (key_buf + key_offset, &x, 1);
122 memcpy (key_buf + key_offset, k, sizeof(*k));
123 key_offset += sizeof(*k);
126 void text_extract (SYSNO sysno, int cmd, const char *fname)
134 logf (LOG_DEBUG, "Text extract of %d", sysno);
136 inf = fopen (fname, "r");
139 logf (LOG_WARN|LOG_ERRNO, "open %s", fname);
142 while ((c=getc (inf)) != EOF)
145 while (i < 254 && c != EOF && isalnum(c))
156 key_write (cmd, &k, w);
164 void file_extract (int cmd, const char *fname, const char *kname)
170 const char *file_type;
173 logf (LOG_DEBUG, "%c %s k=%s", cmd, fname, kname);
174 for (i = strlen(fname); --i >= 0; )
180 else if (fname[i] == '.')
182 strcpy (ext, fname+i+1);
185 sprintf (ext_res, "fileExtension.%s", ext);
186 if (!(file_type = res_get (common_resource, ext_res)))
189 file_info = dict_lookup (file_idx, kname);
192 sysno = sysno_next++;
193 dict_insert (file_idx, kname, sizeof(sysno), &sysno);
194 lseek (sys_idx_fd, sysno * SYS_IDX_ENTRY_LEN, SEEK_SET);
195 write (sys_idx_fd, kname, strlen(kname)+1);
198 memcpy (&sysno, (char*) file_info+1, sizeof(sysno));
199 if (!strcmp (file_type, "text"))
200 text_extract (sysno, cmd, fname);