1 /*-
2 * Copyright (c) 1991 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Margo Seltzer.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37 #ifndef lint
38 char copyright[] =
39 "@(#) Copyright (c) 1991 The Regents of the University of California.\n\
40 All rights reserved.\n";
41 #endif /* not lint */
42
43 #ifndef lint
44 static char sccsid[] = "@(#)tdel.c 5.5 (Berkeley) 9/11/91";
45 #endif /* not lint */
46
47 #include <sys/types.h>
48 #include <sys/file.h>
49 #include <db.h>
50 #include <stdio.h>
51
52 #define INITIAL 25000
53 #define MAXWORDS 25000 /* # of elements in search table */
54
55 /* Usage: thash pagesize fillfactor file */
56 char wp1[8192];
57 char wp2[8192];
main(argc,argv)58 main(argc, argv)
59 char **argv;
60 {
61 DBT item, key;
62 DB *dbp;
63 HASHINFO ctl;
64 FILE *fp;
65 int stat;
66
67 int i = 0;
68
69 argv++;
70 ctl.nelem = INITIAL;
71 ctl.hash = NULL;
72 ctl.bsize = atoi(*argv++);
73 ctl.ffactor = atoi(*argv++);
74 ctl.cachesize = 1024 * 1024; /* 1 MEG */
75 ctl.lorder = 0;
76 argc -= 2;
77 if (!(dbp = dbopen( NULL, O_CREAT|O_RDWR, 0400, DB_HASH, &ctl))) {
78 /* create table */
79 fprintf(stderr, "cannot create: hash table size %d)\n",
80 INITIAL);
81 exit(1);
82 }
83
84 key.data = wp1;
85 item.data = wp2;
86 while ( fgets(wp1, 8192, stdin) &&
87 fgets(wp2, 8192, stdin) &&
88 i++ < MAXWORDS) {
89 /*
90 * put info in structure, and structure in the item
91 */
92 key.size = strlen(wp1);
93 item.size = strlen(wp2);
94
95 /*
96 * enter key/data pair into the table
97 */
98 if ((dbp->put)(dbp, &key, &item, R_NOOVERWRITE) != NULL) {
99 fprintf(stderr, "cannot enter: key %s\n",
100 item.data);
101 exit(1);
102 }
103 }
104
105 if ( --argc ) {
106 fp = fopen ( argv[0], "r");
107 i = 0;
108 while ( fgets(wp1, 8192, fp) &&
109 fgets(wp2, 8192, fp) &&
110 i++ < MAXWORDS) {
111 key.size = strlen(wp1);
112 stat = (dbp->del)(dbp, &key, 0);
113 if (stat) {
114 fprintf ( stderr, "Error retrieving %s\n", key.data );
115 exit(1);
116 }
117 }
118 fclose(fp);
119 }
120 (dbp->close)(dbp);
121 exit(0);
122 }
123