/*
* Copyright (c) 1980 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.
*/
/*
* 1999-02-22 Arkadiusz Mi¶kiewicz <misiek@pld.ORG.PL>
* added Native Language Support
* 1999-09-19 Bruno Haible <haible@clisp.cons.org>
* modified to work correctly in multi-byte locales
*/
#include <stdio.h>
#include <stdlib.h>
#include "nls.h"
#include "widechar.h"
/*
COLRM removes unwanted columns from a file
Jeff Schriebman UC Berkeley 11-74
*/
int
main(int argc, char **argv)
{
register int ct, first, last;
register wint_t c;
int i, w;
int padding;
setlocale(LC_ALL, "");
first = 0;
last = 0;
if (argc > 1)
first = atoi(*++argv);
if (argc > 2)
last = atoi(*++argv);
start:
ct = 0;
loop1:
c = getwc(stdin);
if (c == WEOF)
goto fin;
if (c == '\t')
w = ((ct + 8) & ~7) - ct;
else if (c == '\b')
w = (ct ? ct - 1 : 0) - ct;
else {
w = wcwidth(c);
if (w < 0)
w = 0;
}
ct += w;
if (c == '\n') {
putwc(c, stdout);
goto start;
}
if (!first || ct < first) {
putwc(c, stdout);
goto loop1;
}
for (i = ct-w+1; i < first; i++)
putwc(' ', stdout);
/* Loop getting rid of characters */
while (!last || ct < last) {
c = getwc(stdin);
if (c == WEOF)
goto fin;
if (c == '\n') {
putwc(c, stdout);
goto start;
}
if (c == '\t')
ct = (ct + 8) & ~7;
else if (c == '\b')
ct = ct ? ct - 1 : 0;
else {
w = wcwidth(c);
if (w < 0)
w = 0;
ct += w;
}
}
padding = 0;
/* Output last of the line */
for (;;) {
c = getwc(stdin);
if (c == WEOF)
break;
if (c == '\n') {
putwc(c, stdout);
goto start;
}
if (padding == 0 && last < ct) {
for (i = last; i <ct; i++)
putwc(' ', stdout);
padding = 1;
}
putwc(c, stdout);
}
fin:
fflush(stdout);
if (ferror(stdout) || fclose(stdout))
return 1;
return 0;
}
