lib/libc/db/hash/tests/tdel.c

   1 /*-
   2  * Copyright (c) 1990 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) 1990 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      5.2 (Berkeley) 3/12/91";
  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];
  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 = hash_open( NULL, O_CREAT|O_RDWR, 0400, &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->delete)(dbp, &key);
 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 }