1 /*- 2 * Copyright (c) 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Ken Arnold. 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. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #if 0 34 #ifndef lint 35 static const char copyright[] = 36 "@(#) Copyright (c) 1991, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 static const char sccsid[] = "@(#)unstr.c 8.1 (Berkeley) 5/31/93"; 42 #endif /* not lint */ 43 #endif 44 #include <sys/cdefs.h> 45 /* 46 * This program un-does what "strfile" makes, thereby obtaining the 47 * original file again. This can be invoked with the name of the output 48 * file, the input file, or both. If invoked with only a single argument 49 * ending in ".dat", it is pressumed to be the input file and the output 50 * file will be the same stripped of the ".dat". If the single argument 51 * doesn't end in ".dat", then it is presumed to be the output file, and 52 * the input file is that name prepended by a ".dat". If both are given 53 * they are treated literally as the input and output files. 54 * 55 * Ken Arnold Aug 13, 1978 56 */ 57 58 #include <sys/param.h> 59 #include <sys/endian.h> 60 #include <ctype.h> 61 #include <err.h> 62 #include <stdio.h> 63 #include <stdlib.h> 64 #include <string.h> 65 66 #include "strfile.h" 67 68 static char *Infile, /* name of input file */ 69 Datafile[MAXPATHLEN], /* name of data file */ 70 Delimch; /* delimiter character */ 71 72 static FILE *Inf, *Dataf; 73 74 static void order_unstr(STRFILE *); 75 76 /* ARGSUSED */ 77 int 78 main(int argc, char *argv[]) 79 { 80 static STRFILE tbl; /* description table */ 81 82 if (argc != 2) { 83 fprintf(stderr, "usage: unstr datafile\n"); 84 exit(1); 85 } 86 Infile = argv[1]; 87 if ((size_t)snprintf(Datafile, sizeof(Datafile), "%s.dat", Infile) >= 88 sizeof(Datafile)) 89 errx(1, "%s name too long", Infile); 90 if ((Inf = fopen(Infile, "r")) == NULL) 91 err(1, "%s", Infile); 92 if ((Dataf = fopen(Datafile, "r")) == NULL) 93 err(1, "%s", Datafile); 94 if (fread((char *)&tbl, sizeof(tbl), 1, Dataf) != 1) { 95 if (feof(Dataf)) 96 errx(1, "%s read EOF", Datafile); 97 else 98 err(1, "%s read", Datafile); 99 } 100 tbl.str_version = be32toh(tbl.str_version); 101 tbl.str_numstr = be32toh(tbl.str_numstr); 102 tbl.str_longlen = be32toh(tbl.str_longlen); 103 tbl.str_shortlen = be32toh(tbl.str_shortlen); 104 tbl.str_flags = be32toh(tbl.str_flags); 105 if (!(tbl.str_flags & (STR_ORDERED | STR_RANDOM))) 106 errx(1, "nothing to do -- table in file order"); 107 Delimch = tbl.str_delim; 108 order_unstr(&tbl); 109 fclose(Inf); 110 fclose(Dataf); 111 exit(0); 112 } 113 114 static void 115 order_unstr(STRFILE *tbl) 116 { 117 uint32_t i; 118 char *sp; 119 off_t pos; 120 char buf[BUFSIZ]; 121 122 for (i = 0; i < tbl->str_numstr; i++) { 123 fread(&pos, 1, sizeof(pos), Dataf); 124 fseeko(Inf, be64toh(pos), SEEK_SET); 125 if (i != 0) 126 printf("%c\n", Delimch); 127 for (;;) { 128 sp = fgets(buf, sizeof(buf), Inf); 129 if (sp == NULL || STR_ENDSTRING(sp, *tbl)) 130 break; 131 else 132 fputs(sp, stdout); 133 } 134 } 135 } 136