xref: /freebsd/usr.bin/what/what.c (revision afe61c15161c324a7af299a9b8457aba5afc92db)
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 #ifndef lint
35 static char copyright[] =
36 "@(#) Copyright (c) 1980, 1988, 1993\n\
37 	The Regents of the University of California.  All rights reserved.\n";
38 #endif /* not lint */
39 
40 #ifndef lint
41 static char sccsid[] = "@(#)what.c	8.1 (Berkeley) 6/6/93";
42 #endif /* not lint */
43 
44 #include <stdio.h>
45 
46 /*
47  * what
48  */
49 /* ARGSUSED */
50 main(argc, argv)
51 	int argc;
52 	char **argv;
53 {
54 	if (!*++argv)
55 		search();
56 	else do {
57 		if (!freopen(*argv, "r", stdin)) {
58 			perror(*argv);
59 			exit(1);
60 		}
61 		printf("%s\n", *argv);
62 		search();
63 	} while(*++argv);
64 	exit(0);
65 }
66 
67 search()
68 {
69 	register int c;
70 
71 	while ((c = getchar()) != EOF) {
72 loop:		if (c != '@')
73 			continue;
74 		if ((c = getchar()) != '(')
75 			goto loop;
76 		if ((c = getchar()) != '#')
77 			goto loop;
78 		if ((c = getchar()) != ')')
79 			goto loop;
80 		putchar('\t');
81 		while ((c = getchar()) != EOF && c && c != '"' &&
82 		    c != '>' && c != '\n')
83 			putchar(c);
84 		putchar('\n');
85 	}
86 }
87