147 lines
3.6 KiB
C
147 lines
3.6 KiB
C
/*-
|
|
* Copyright (c) 1991, 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. 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.
|
|
*/
|
|
|
|
#ifndef lint
|
|
static const char copyright[] =
|
|
"@(#) Copyright (c) 1991, 1993\n\
|
|
The Regents of the University of California. All rights reserved.\n";
|
|
#endif
|
|
|
|
#if 0
|
|
#ifndef lint
|
|
static char sccsid[] = "@(#)colrm.c 8.2 (Berkeley) 5/4/95";
|
|
#endif
|
|
#endif
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/types.h>
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <limits.h>
|
|
#include <locale.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <wchar.h>
|
|
|
|
#define TAB 8
|
|
|
|
void check(FILE *);
|
|
static void usage(void);
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
u_long column, start, stop;
|
|
int ch, width;
|
|
char *p;
|
|
|
|
setlocale(LC_ALL, "");
|
|
|
|
while ((ch = getopt(argc, argv, "")) != -1)
|
|
switch(ch) {
|
|
case '?':
|
|
default:
|
|
usage();
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
start = stop = 0;
|
|
switch(argc) {
|
|
case 2:
|
|
stop = strtol(argv[1], &p, 10);
|
|
if (stop <= 0 || *p)
|
|
errx(1, "illegal column -- %s", argv[1]);
|
|
/* FALLTHROUGH */
|
|
case 1:
|
|
start = strtol(argv[0], &p, 10);
|
|
if (start <= 0 || *p)
|
|
errx(1, "illegal column -- %s", argv[0]);
|
|
break;
|
|
case 0:
|
|
break;
|
|
default:
|
|
usage();
|
|
}
|
|
|
|
if (stop && start > stop)
|
|
errx(1, "illegal start and stop columns");
|
|
|
|
for (column = 0;;) {
|
|
switch (ch = getwchar()) {
|
|
case WEOF:
|
|
check(stdin);
|
|
break;
|
|
case '\b':
|
|
if (column)
|
|
--column;
|
|
break;
|
|
case '\n':
|
|
column = 0;
|
|
break;
|
|
case '\t':
|
|
column = (column + TAB) & ~(TAB - 1);
|
|
break;
|
|
default:
|
|
if ((width = wcwidth(ch)) > 0)
|
|
column += width;
|
|
break;
|
|
}
|
|
|
|
if ((!start || column < start || (stop && column > stop)) &&
|
|
putwchar(ch) == WEOF)
|
|
check(stdout);
|
|
}
|
|
}
|
|
|
|
void
|
|
check(FILE *stream)
|
|
{
|
|
if (feof(stream))
|
|
exit(0);
|
|
if (ferror(stream))
|
|
err(1, "%s", stream == stdin ? "stdin" : "stdout");
|
|
}
|
|
|
|
void
|
|
usage(void)
|
|
{
|
|
(void)fprintf(stderr, "usage: colrm [start [stop]]\n");
|
|
exit(1);
|
|
}
|
|
|