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. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#) Copyright (c) 1980, 1988, 1993 The Regents of the University of California. All rights reserved. 34 * @(#)what.c 8.1 (Berkeley) 6/6/93 35 * $FreeBSD: src/usr.bin/what/what.c,v 1.5.2.1 2000/07/01 12:32:35 ps Exp $ 36 * $DragonFly: src/usr.bin/what/what.c,v 1.4 2004/11/19 17:46:40 liamfoy Exp $ 37 */ 38 39 #include <err.h> 40 #include <stdio.h> 41 #include <stdlib.h> 42 #include <unistd.h> 43 44 static int sflag; 45 static int found; 46 47 static void search(void); 48 static void usage(void); 49 50 /* 51 * what 52 */ 53 int 54 main(int argc, char **argv) 55 { 56 int c; 57 58 while ((c = getopt(argc, argv, "s")) != -1) 59 switch (c) { 60 case 's': 61 sflag = 1; 62 break; 63 default: 64 usage(); 65 } 66 argv += optind; 67 68 if (!*argv) 69 search(); 70 else do { 71 if (!freopen(*argv, "r", stdin)) 72 warn("%s", *argv); 73 else { 74 printf("%s:\n", *argv); 75 search(); 76 } 77 } while(*++argv); 78 exit(!found); 79 } 80 81 static void 82 usage(void) 83 { 84 (void)fprintf(stderr, "usage: what [-s] file ...\n"); 85 exit(1); 86 } 87 88 static void 89 search(void) 90 { 91 int c; 92 93 while ((c = getchar()) != EOF) { 94 loop: if (c != '@') 95 continue; 96 if ((c = getchar()) != '(') 97 goto loop; 98 if ((c = getchar()) != '#') 99 goto loop; 100 if ((c = getchar()) != ')') 101 goto loop; 102 putchar('\t'); 103 while ((c = getchar()) != EOF && c && c != '"' && 104 c != '>' && c != '\\' && c != '\n') 105 putchar(c); 106 putchar('\n'); 107 found = 1; 108 if (sflag) 109 return; 110 } 111 } 112