1 /* $NetBSD: what.c,v 1.12 2015/12/12 09:50:12 dholland 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 1.12 2015/12/12 09:50:12 dholland Exp $"); 43 #endif /* not lint */ 44 45 #include <locale.h> 46 #include <stdio.h> 47 #include <stdlib.h> 48 #include <unistd.h> 49 50 static void search(void); 51 __dead static void usage(void); 52 53 static int matches; 54 static int sflag; 55 56 /* 57 * what 58 */ 59 int 60 main(int argc, char **argv) 61 { 62 int c; 63 64 (void)setlocale(LC_ALL, ""); 65 66 matches = sflag = 0; 67 while ((c = getopt(argc, argv, "s")) != -1) { 68 switch (c) { 69 case 's': 70 sflag = 1; 71 break; 72 case '?': 73 default: 74 usage(); 75 } 76 } 77 argc -= optind; 78 argv += optind; 79 80 if (argc < 1) { 81 usage(); 82 } else do { 83 if (freopen(*argv, "r", stdin) == NULL) { 84 perror(*argv); 85 exit(matches ? EXIT_SUCCESS : 1); 86 } 87 printf("%s\n", *argv); 88 search(); 89 } while (*++argv != NULL); 90 91 /* Note: the standard explicitly specifies an exit status of 1. */ 92 exit(matches ? EXIT_SUCCESS : 1); 93 /* NOTREACHED */ 94 } 95 96 static void 97 search(void) 98 { 99 int c; 100 101 while ((c = getchar()) != EOF) { 102 loop: if (c != '@') 103 continue; 104 if ((c = getchar()) != '(') 105 goto loop; 106 if ((c = getchar()) != '#') 107 goto loop; 108 if ((c = getchar()) != ')') 109 goto loop; 110 putchar('\t'); 111 while ((c = getchar()) != EOF && c != '\0' && c != '"' && 112 c != '>' && c != '\n' && c != '\\') 113 putchar(c); 114 putchar('\n'); 115 matches++; 116 if (sflag) 117 break; 118 } 119 } 120 121 static void 122 usage(void) 123 { 124 125 (void)fprintf(stderr, "usage: what [-s] file ...\n"); 126 exit(1); 127 } 128