1 /* $NetBSD: what.c,v 1.10 2008/07/21 14:19:28 lukem Exp $ */ 2 3 /* 4 * Copyright (c) 1980, 1988, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 __COPYRIGHT("@(#) Copyright (c) 1980, 1988, 1993\ 35 The Regents of the University of California. All rights reserved."); 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)what.c 8.1 (Berkeley) 6/6/93"; 41 #endif 42 __RCSID("$NetBSD: what.c,v 1.10 2008/07/21 14:19:28 lukem Exp $"); 43 #endif /* not lint */ 44 45 #include <locale.h> 46 #include <stdio.h> 47 #include <stdlib.h> 48 #include <unistd.h> 49 50 int main __P((int, char **)); 51 static void search __P((void)); 52 static void usage __P((void)); 53 54 static int matches; 55 static int sflag; 56 57 /* 58 * what 59 */ 60 /* ARGSUSED */ 61 int 62 main(argc, argv) 63 int argc; 64 char **argv; 65 { 66 int c; 67 68 (void)setlocale(LC_ALL, ""); 69 70 matches = sflag = 0; 71 while ((c = getopt(argc, argv, "s")) != -1) { 72 switch (c) { 73 case 's': 74 sflag = 1; 75 break; 76 case '?': 77 default: 78 usage(); 79 } 80 } 81 argc -= optind; 82 argv += optind; 83 84 if (argc < 1) { 85 usage(); 86 } else do { 87 if (freopen(*argv, "r", stdin) == NULL) { 88 perror(*argv); 89 exit(matches ? EXIT_SUCCESS : 1); 90 } 91 printf("%s\n", *argv); 92 search(); 93 } while (*++argv != NULL); 94 95 /* Note: the standard explicitly specifies an exit status of 1. */ 96 exit(matches ? EXIT_SUCCESS : 1); 97 /* NOTREACHED */ 98 } 99 100 static void 101 search() 102 { 103 int c; 104 105 while ((c = getchar()) != EOF) { 106 loop: if (c != '@') 107 continue; 108 if ((c = getchar()) != '(') 109 goto loop; 110 if ((c = getchar()) != '#') 111 goto loop; 112 if ((c = getchar()) != ')') 113 goto loop; 114 putchar('\t'); 115 while ((c = getchar()) != EOF && c != '\0' && c != '"' && 116 c != '>' && c != '\n' && c != '\\') 117 putchar(c); 118 putchar('\n'); 119 matches++; 120 if (sflag) 121 break; 122 } 123 } 124 125 static void 126 usage() 127 { 128 129 (void)fprintf(stderr, "usage: what [-s] file ...\n"); 130 exit(1); 131 } 132