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 34 #include <sys/cdefs.h> 35 36 __FBSDID("$FreeBSD$"); 37 38 #ifndef lint 39 static const char copyright[] = 40 "@(#) Copyright (c) 1980, 1988, 1993\n\ 41 The Regents of the University of California. All rights reserved.\n"; 42 #endif 43 44 #ifndef lint 45 static const char sccsid[] = "@(#)what.c 8.1 (Berkeley) 6/6/93"; 46 #endif 47 48 #include <err.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <unistd.h> 52 53 static int sflag; 54 static int found; 55 56 void search(void); 57 static void usage(void); 58 59 /* 60 * what 61 */ 62 int 63 main(argc, argv) 64 int argc; 65 char **argv; 66 { 67 int c; 68 69 while ((c = getopt(argc, argv, "s")) != -1) 70 switch (c) { 71 case 's': 72 sflag = 1; 73 break; 74 default: 75 usage(); 76 } 77 argv += optind; 78 79 if (!*argv) 80 search(); 81 else do { 82 if (!freopen(*argv, "r", stdin)) 83 warn("%s", *argv); 84 else { 85 printf("%s:\n", *argv); 86 search(); 87 } 88 } while(*++argv); 89 exit(!found); 90 } 91 92 static void 93 usage() 94 { 95 (void)fprintf(stderr, "usage: what [-s] file ...\n"); 96 exit(1); 97 } 98 99 void 100 search() 101 { 102 register int c; 103 104 while ((c = getchar()) != EOF) { 105 loop: if (c != '@') 106 continue; 107 if ((c = getchar()) != '(') 108 goto loop; 109 if ((c = getchar()) != '#') 110 goto loop; 111 if ((c = getchar()) != ')') 112 goto loop; 113 putchar('\t'); 114 while ((c = getchar()) != EOF && c && c != '"' && 115 c != '>' && c != '\\' && c != '\n') 116 putchar(c); 117 putchar('\n'); 118 found = 1; 119 if (sflag) 120 return; 121 } 122 } 123