[unix-history] / usr.bin / colrm / colrm.c

/*
 * 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.
 */

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1980 Regents of the University of California.\n\
 All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)colrm.c	5.4 (Berkeley) 6/1/90";
#endif /* not lint */

#include <stdio.h>
/*
COLRM removes unwanted columns from a file
	Jeff Schriebman  UC Berkeley 11-74
*/


main(argc,argv)
char **argv;
{
	register c, ct, first, last;

	first = 0;
	last = 0;
	if (argc > 1)
		first = getn(*++argv);
	if (argc > 2)
		last = getn(*++argv);

start:
	ct = 0;
loop1:
	c = getc(stdin);
	if (feof(stdin))
		goto fin;
	if (c == '\t')
		ct = (ct + 8) & ~7;
	else if (c == '\b')
		ct = ct ? ct - 1 : 0;
	else
		ct++;
	if (c == '\n') {
		putc(c, stdout);
		goto start;
	}
	if (!first || ct < first) {
		putc(c, stdout);
		goto loop1;
	}

/* Loop getting rid of characters */
	while (!last || ct < last) {
		c = getc(stdin);
		if (feof(stdin))
			goto fin;
		if (c == '\n') {
			putc(c, stdout);
			goto start;
		}
		if (c == '\t')
			ct = (ct + 8) & ~7;
		else if (c == '\b')
			ct = ct ? ct - 1 : 0;
		else
			ct++;
	}

/* Output last of the line */
	for (;;) {
		c = getc(stdin);
		if (feof(stdin))
			break;
		putc(c, stdout);
		if (c == '\n')
			goto start;
	}
fin:
	fflush(stdout);
	exit(0);
}

getn(ap)
char *ap;
{
	register int n,c;
	register char *p;

	p = ap;
	n = 0;
	while ((c = *p++) >= '0' && c <= '9')
		n = n*10 + c - '0';
	return(n);
}
Commit	Line	Data
15637ed4 RG	1	/*
	2	* Copyright (c) 1980 Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by the University of
	16	* California, Berkeley and its contributors.
	17	* 4. Neither the name of the University nor the names of its contributors
	18	* may be used to endorse or promote products derived from this software
	19	* without specific prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	31	* SUCH DAMAGE.
	32	*/
	33
	34	#ifndef lint
	35	char copyright[] =
	36	"@(#) Copyright (c) 1980 Regents of the University of California.\n\
	37	All rights reserved.\n";
	38	#endif /* not lint */
	39
	40	#ifndef lint
	41	static char sccsid[] = "@(#)colrm.c 5.4 (Berkeley) 6/1/90";
	42	#endif /* not lint */
	43
	44	#include <stdio.h>
	45	/*
	46	COLRM removes unwanted columns from a file
	47	Jeff Schriebman UC Berkeley 11-74
	48	*/
	49
	50
	51	main(argc,argv)
	52	char **argv;
	53	{
	54	register c, ct, first, last;
	55
	56	first = 0;
	57	last = 0;
	58	if (argc > 1)
	59	first = getn(*++argv);
	60	if (argc > 2)
	61	last = getn(*++argv);
	62
	63	start:
	64	ct = 0;
65	loop1:
66	c = getc(stdin);
67	if (feof(stdin))
68	goto fin;
69	if (c == '\t')
70	ct = (ct + 8) & ~7;
71	else if (c == '\b')
72	ct = ct ? ct - 1 : 0;
73	else
74	ct++;
75	if (c == '\n') {
76	putc(c, stdout);
77	goto start;
78	}
79	if (!first \|\| ct < first) {
80	putc(c, stdout);
81	goto loop1;
82	}
83
84	/* Loop getting rid of characters */
85	while (!last \|\| ct < last) {
86	c = getc(stdin);
87	if (feof(stdin))
88	goto fin;
89	if (c == '\n') {
90	putc(c, stdout);
91	goto start;
92	}
93	if (c == '\t')
94	ct = (ct + 8) & ~7;
95	else if (c == '\b')
96	ct = ct ? ct - 1 : 0;
97	else
98	ct++;
99	}
100
101	/* Output last of the line */
102	for (;;) {
103	c = getc(stdin);
104	if (feof(stdin))
105	break;
106	putc(c, stdout);
107	if (c == '\n')
108	goto start;
109	}
110	fin:
111	fflush(stdout);
112	exit(0);
113	}
114
115	getn(ap)
116	char *ap;
117	{
118	register int n,c;
119	register char *p;
120
121	p = ap;
122	n = 0;
123	while ((c = *p++) >= '0' && c <= '9')
124	n = n*10 + c - '0';
125	return(n);
126	}