1 /* $NetBSD: unstr.c,v 1.7 1999/09/18 19:38:50 jsm Exp $ */ 2 3 /*- 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Ken Arnold. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 #ifndef lint 41 __COPYRIGHT("@(#) Copyright (c) 1991, 1993\n\ 42 The Regents of the University of California. All rights reserved.\n"); 43 #endif /* not lint */ 44 45 #ifndef lint 46 #if 0 47 static char sccsid[] = "@(#)unstr.c 8.1 (Berkeley) 5/31/93"; 48 #else 49 __RCSID("$NetBSD: unstr.c,v 1.7 1999/09/18 19:38:50 jsm Exp $"); 50 #endif 51 #endif /* not lint */ 52 53 /* 54 * This program un-does what "strfile" makes, thereby obtaining the 55 * original file again. This can be invoked with the name of the output 56 * file, the input file, or both. If invoked with only a single argument 57 * ending in ".dat", it is pressumed to be the input file and the output 58 * file will be the same stripped of the ".dat". If the single argument 59 * doesn't end in ".dat", then it is presumed to be the output file, and 60 * the input file is that name prepended by a ".dat". If both are given 61 * they are treated literally as the input and output files. 62 * 63 * Ken Arnold Aug 13, 1978 64 */ 65 66 # include <sys/types.h> 67 # include <sys/param.h> 68 # include <machine/endian.h> 69 # include <ctype.h> 70 # include <err.h> 71 # include <stdio.h> 72 # include <string.h> 73 # include "strfile.h" 74 75 # ifndef MAXPATHLEN 76 # define MAXPATHLEN 1024 77 # endif /* MAXPATHLEN */ 78 79 char *Infile, /* name of input file */ 80 Datafile[MAXPATHLEN], /* name of data file */ 81 Delimch; /* delimiter character */ 82 83 FILE *Inf, *Dataf; 84 85 void getargs __P((char *[])); 86 int main __P((int, char *[])); 87 void order_unstr __P((STRFILE *)); 88 89 /* ARGSUSED */ 90 int 91 main(ac, av) 92 int ac; 93 char **av; 94 { 95 static STRFILE tbl; /* description table */ 96 97 getargs(av); 98 if ((Inf = fopen(Infile, "r")) == NULL) 99 err(1, "fopen %s", Infile); 100 if ((Dataf = fopen(Datafile, "r")) == NULL) 101 err(1, "fopen %s", Datafile); 102 (void) fread((char *) &tbl, sizeof tbl, 1, Dataf); 103 BE32TOH(tbl.str_version); 104 BE32TOH(tbl.str_numstr); 105 BE32TOH(tbl.str_longlen); 106 BE32TOH(tbl.str_shortlen); 107 BE32TOH(tbl.str_flags); 108 if (!(tbl.str_flags & (STR_ORDERED | STR_RANDOM))) { 109 fprintf(stderr, "nothing to do -- table in file order\n"); 110 exit(1); 111 } 112 Delimch = tbl.str_delim; 113 order_unstr(&tbl); 114 (void) fclose(Inf); 115 (void) fclose(Dataf); 116 exit(0); 117 } 118 119 void 120 getargs(av) 121 char *av[]; 122 { 123 if (!*++av) { 124 (void) fprintf(stderr, "usage: unstr datafile\n"); 125 exit(1); 126 } 127 Infile = *av; 128 (void) strcpy(Datafile, Infile); 129 (void) strcat(Datafile, ".dat"); 130 } 131 132 void 133 order_unstr(tbl) 134 STRFILE *tbl; 135 { 136 unsigned int i; 137 char *sp; 138 off_t pos; 139 char buf[BUFSIZ]; 140 141 for (i = 0; i < tbl->str_numstr; i++) { 142 (void) fread((char *) &pos, 1, sizeof pos, Dataf); 143 (void) fseek(Inf, be64toh(pos), SEEK_SET); 144 if (i != 0) 145 (void) printf("%c\n", Delimch); 146 for (;;) { 147 sp = fgets(buf, sizeof buf, Inf); 148 if (sp == NULL || STR_ENDSTRING(sp, *tbl)) 149 break; 150 else 151 fputs(sp, stdout); 152 } 153 } 154 } 155