xref: /netbsd-src/usr.bin/what/what.c (revision 2a399c6883d870daece976daec6ffa7bb7f934ce)
1 /*	$NetBSD: what.c,v 1.6 1997/10/20 03:16:31 lukem Exp $	*/
2 
3 /*
4  * Copyright (c) 1980, 1988, 1993
5  *	The Regents of the University of California.  All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. All advertising materials mentioning features or use of this software
16  *    must display the following acknowledgement:
17  *	This product includes software developed by the University of
18  *	California, Berkeley and its contributors.
19  * 4. Neither the name of the University nor the names of its contributors
20  *    may be used to endorse or promote products derived from this software
21  *    without specific prior written permission.
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33  * SUCH DAMAGE.
34  */
35 
36 #include <sys/cdefs.h>
37 #ifndef lint
38 __COPYRIGHT("@(#) Copyright (c) 1980, 1988, 1993\n\
39 	The Regents of the University of California.  All rights reserved.\n");
40 #endif /* not lint */
41 
42 #ifndef lint
43 #if 0
44 static char sccsid[] = "@(#)what.c	8.1 (Berkeley) 6/6/93";
45 #endif
46 __RCSID("$NetBSD: what.c,v 1.6 1997/10/20 03:16:31 lukem Exp $");
47 #endif /* not lint */
48 
49 #include <stdio.h>
50 
51 void search __P((void));
52 int main __P((int, char **));
53 
54 /*
55  * what
56  */
57 /* ARGSUSED */
58 int
59 main(argc, argv)
60 	int argc;
61 	char **argv;
62 {
63 	if (!*++argv)
64 		search();
65 	else do {
66 		if (!freopen(*argv, "r", stdin)) {
67 			perror(*argv);
68 			exit(1);
69 		}
70 		printf("%s\n", *argv);
71 		search();
72 	} while(*++argv);
73 	exit(0);
74 }
75 
76 void
77 search()
78 {
79 	int c;
80 
81 	while ((c = getchar()) != EOF) {
82 loop:		if (c != '@')
83 			continue;
84 		if ((c = getchar()) != '(')
85 			goto loop;
86 		if ((c = getchar()) != '#')
87 			goto loop;
88 		if ((c = getchar()) != ')')
89 			goto loop;
90 		putchar('\t');
91 		while ((c = getchar()) != EOF && c && c != '"' &&
92 		    c != '>' && c != '\n')
93 			putchar(c);
94 		putchar('\n');
95 	}
96 }
97