/* $NetBSD: what.c,v 1.12 2015/12/12 09:50:12 dholland Exp $ */
/*
* Copyright (c) 1980, 1988, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
static void search(void);
static void usage(void);
static int matches;
static int sflag;
/*
* what
*/
int
main(int argc, char **argv)
{
int c;
(void)setlocale(LC_ALL, "");
matches = sflag = 0;
while ((c = getopt(argc, argv, "s")) != -1) {
switch (c) {
case 's':
sflag = 1;
break;
case '?':
default:
usage();
}
}
argc -= optind;
argv += optind;
if (argc < 1) {
usage();
} else do {
if (freopen(*argv, "r", stdin) == NULL) {
perror(*argv);
exit(matches ? EXIT_SUCCESS : 1);
}
printf("%s\n", *argv);
search();
} while (*++argv != NULL);
/* Note: the standard explicitly specifies an exit status of 1. */
exit(matches ? EXIT_SUCCESS : 1);
/* NOTREACHED */
}
static void
search(void)
{
int c;
while ((c = getchar()) != EOF) {
loop: if (c != '@')
continue;
if ((c = getchar()) != '(')
goto loop;
if ((c = getchar()) != '#')
goto loop;
if ((c = getchar()) != ')')
goto loop;
putchar('\t');
while ((c = getchar()) != EOF && c != '\0' && c != '"' &&
c != '>' && c != '\n' && c != '\\')
putchar(c);
putchar('\n');
matches++;
if (sflag)
break;
}
}
static void
usage(void)
{
(void)fprintf(stderr, "usage: what [-s] file ...\n");
exit(1);
}
