1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
|
/*-
* Copyright (c) 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Margo Seltzer.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static char copyright[] =
"@(#) Copyright (c) 1991, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
static char sccsid[] = "@(#)tdel.c 8.1 (Berkeley) 6/4/93";
#endif /* not lint */
#include <sys/types.h>
#include <sys/file.h>
#include <db.h>
#include <stdio.h>
#define INITIAL 25000
#define MAXWORDS 25000 /* # of elements in search table */
/* Usage: thash pagesize fillfactor file */
char wp1[8192];
char wp2[8192];
main(argc, argv)
char **argv;
{
DBT item, key;
DB *dbp;
HASHINFO ctl;
FILE *fp;
int stat;
int i = 0;
argv++;
ctl.nelem = INITIAL;
ctl.hash = NULL;
ctl.bsize = atoi(*argv++);
ctl.ffactor = atoi(*argv++);
ctl.cachesize = 1024 * 1024; /* 1 MEG */
ctl.lorder = 0;
argc -= 2;
if (!(dbp = dbopen( NULL, O_CREAT|O_RDWR, 0400, DB_HASH, &ctl))) {
/* create table */
fprintf(stderr, "cannot create: hash table size %d)\n",
INITIAL);
exit(1);
}
key.data = wp1;
item.data = wp2;
while ( fgets(wp1, 8192, stdin) &&
fgets(wp2, 8192, stdin) &&
i++ < MAXWORDS) {
/*
* put info in structure, and structure in the item
*/
key.size = strlen(wp1);
item.size = strlen(wp2);
/*
* enter key/data pair into the table
*/
if ((dbp->put)(dbp, &key, &item, R_NOOVERWRITE) != NULL) {
fprintf(stderr, "cannot enter: key %s\n",
item.data);
exit(1);
}
}
if ( --argc ) {
fp = fopen ( argv[0], "r");
i = 0;
while ( fgets(wp1, 8192, fp) &&
fgets(wp2, 8192, fp) &&
i++ < MAXWORDS) {
key.size = strlen(wp1);
stat = (dbp->del)(dbp, &key, 0);
if (stat) {
fprintf ( stderr, "Error retrieving %s\n", key.data );
exit(1);
}
}
fclose(fp);
}
(dbp->close)(dbp);
exit(0);
}
|
