127 lines
3.2 KiB
C
127 lines
3.2 KiB
C
/*
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* Copyright (c) 1980 Regents of the University of California.
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* 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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#ifndef lint
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char copyright[] =
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"@(#) Copyright (c) 1980 Regents of the University of California.\n\
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All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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static char sccsid[] = "@(#)colrm.c 5.4 (Berkeley) 6/1/90";
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#endif /* not lint */
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#include <stdio.h>
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/*
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COLRM removes unwanted columns from a file
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Jeff Schriebman UC Berkeley 11-74
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*/
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main(argc,argv)
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char **argv;
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{
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register c, ct, first, last;
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first = 0;
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last = 0;
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if (argc > 1)
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first = getn(*++argv);
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if (argc > 2)
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last = getn(*++argv);
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start:
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ct = 0;
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loop1:
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c = getc(stdin);
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if (feof(stdin))
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goto fin;
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if (c == '\t')
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ct = (ct + 8) & ~7;
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else if (c == '\b')
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ct = ct ? ct - 1 : 0;
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else
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ct++;
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if (c == '\n') {
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putc(c, stdout);
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goto start;
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}
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if (!first || ct < first) {
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putc(c, stdout);
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goto loop1;
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}
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/* Loop getting rid of characters */
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while (!last || ct < last) {
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c = getc(stdin);
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if (feof(stdin))
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goto fin;
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if (c == '\n') {
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putc(c, stdout);
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goto start;
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}
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if (c == '\t')
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ct = (ct + 8) & ~7;
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else if (c == '\b')
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ct = ct ? ct - 1 : 0;
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else
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ct++;
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}
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/* Output last of the line */
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for (;;) {
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c = getc(stdin);
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if (feof(stdin))
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break;
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putc(c, stdout);
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if (c == '\n')
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goto start;
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}
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fin:
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fflush(stdout);
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exit(0);
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}
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getn(ap)
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char *ap;
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{
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register int n,c;
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register char *p;
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p = ap;
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n = 0;
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while ((c = *p++) >= '0' && c <= '9')
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n = n*10 + c - '0';
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return(n);
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}
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