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 <stdbool.h> 50 #include <stdio.h> 51 #include <stdlib.h> 52 #include <unistd.h> 53 54 static void usage(void); 55 static bool search(bool, bool, FILE *); 56 57 int 58 main(int argc, char *argv[]) 59 { 60 const char *file; 61 FILE *in; 62 bool found, qflag, sflag; 63 int c; 64 65 qflag = sflag = false; 66 67 while ((c = getopt(argc, argv, "qs")) != -1) { 68 switch (c) { 69 case 'q': 70 qflag = true; 71 break; 72 case 's': 73 sflag = true; 74 break; 75 default: 76 usage(); 77 } 78 } 79 argc -= optind; 80 argv += optind; 81 82 found = false; 83 84 if (argc == 0) { 85 if (search(sflag, qflag, stdin)) 86 found = true; 87 } else { 88 while (argc--) { 89 file = *argv++; 90 in = fopen(file, "r"); 91 if (in == NULL) { 92 if (!qflag) 93 warn("%s", file); 94 continue; 95 } 96 if (!qflag) 97 printf("%s:\n", file); 98 if (search(sflag, qflag, in)) 99 found = true; 100 fclose(in); 101 } 102 } 103 exit(found ? 0 : 1); 104 } 105 106 static void 107 usage(void) 108 { 109 fprintf(stderr, "usage: what [-qs] [file ...]\n"); 110 exit(1); 111 } 112 113 bool 114 search(bool one, bool quiet, FILE *in) 115 { 116 bool found; 117 int c; 118 119 found = false; 120 121 while ((c = getc(in)) != EOF) { 122 loop: if (c != '@') 123 continue; 124 if ((c = getc(in)) != '(') 125 goto loop; 126 if ((c = getc(in)) != '#') 127 goto loop; 128 if ((c = getc(in)) != ')') 129 goto loop; 130 if (!quiet) 131 putchar('\t'); 132 while ((c = getc(in)) != EOF && c && c != '"' && 133 c != '>' && c != '\\' && c != '\n') 134 putchar(c); 135 putchar('\n'); 136 found = true; 137 if (one) 138 break; 139 } 140 return (found); 141 } 142