123 lines
3.1 KiB
C
123 lines
3.1 KiB
C
/*
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* Copyright (c) 1980, 1988, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#ifndef lint
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static const char copyright[] =
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"@(#) Copyright (c) 1980, 1988, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif
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#ifndef lint
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static const char sccsid[] = "@(#)what.c 8.1 (Berkeley) 6/6/93";
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#endif
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#include <err.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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static int sflag;
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static int found;
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void search __P((void));
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static void usage __P((void));
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/*
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* what
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*/
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int
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main(argc, argv)
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int argc;
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char **argv;
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{
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int c;
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while ((c = getopt(argc, argv, "s")) != -1)
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switch (c) {
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case 's':
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sflag = 1;
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break;
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default:
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usage();
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}
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argv += optind;
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if (!*argv)
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search();
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else do {
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if (!freopen(*argv, "r", stdin))
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warn("%s", *argv);
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else {
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printf("%s:\n", *argv);
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search();
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}
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} while(*++argv);
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exit(!found);
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}
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static void
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usage()
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{
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(void)fprintf(stderr, "usage: what [-s] file ...\n");
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exit(1);
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}
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void
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search()
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{
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register int c;
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while ((c = getchar()) != EOF) {
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loop: if (c != '@')
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continue;
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if ((c = getchar()) != '(')
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goto loop;
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if ((c = getchar()) != '#')
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goto loop;
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if ((c = getchar()) != ')')
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goto loop;
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putchar('\t');
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while ((c = getchar()) != EOF && c && c != '"' &&
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c != '>' && c != '\\' && c != '\n')
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putchar(c);
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putchar('\n');
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found = 1;
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if (sflag)
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return;
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}
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}
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