1 /* 2 * Copyright (c) 1980, 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#) Copyright (c) 1980, 1988, 1993 The Regents of the University of California. All rights reserved. 30 * @(#)what.c 8.1 (Berkeley) 6/6/93 31 * $FreeBSD: src/usr.bin/what/what.c,v 1.5.2.1 2000/07/01 12:32:35 ps Exp $ 32 * $DragonFly: src/usr.bin/what/what.c,v 1.4 2004/11/19 17:46:40 liamfoy Exp $ 33 */ 34 35 #include <err.h> 36 #include <stdio.h> 37 #include <stdlib.h> 38 #include <unistd.h> 39 40 static int sflag; 41 static int found; 42 43 static void search(void); 44 static void usage(void); 45 46 /* 47 * what 48 */ 49 int 50 main(int argc, char **argv) 51 { 52 int c; 53 54 while ((c = getopt(argc, argv, "s")) != -1) 55 switch (c) { 56 case 's': 57 sflag = 1; 58 break; 59 default: 60 usage(); 61 } 62 argv += optind; 63 64 if (!*argv) 65 search(); 66 else do { 67 if (!freopen(*argv, "r", stdin)) 68 warn("%s", *argv); 69 else { 70 printf("%s:\n", *argv); 71 search(); 72 } 73 } while(*++argv); 74 exit(!found); 75 } 76 77 static void 78 usage(void) 79 { 80 (void)fprintf(stderr, "usage: what [-s] file ...\n"); 81 exit(1); 82 } 83 84 static void 85 search(void) 86 { 87 int c; 88 89 while ((c = getchar()) != EOF) { 90 loop: if (c != '@') 91 continue; 92 if ((c = getchar()) != '(') 93 goto loop; 94 if ((c = getchar()) != '#') 95 goto loop; 96 if ((c = getchar()) != ')') 97 goto loop; 98 putchar('\t'); 99 while ((c = getchar()) != EOF && c && c != '"' && 100 c != '>' && c != '\\' && c != '\n') 101 putchar(c); 102 putchar('\n'); 103 found = 1; 104 if (sflag) 105 return; 106 } 107 } 108