146 lines
3.5 KiB
C
146 lines
3.5 KiB
C
/*-
|
|
* Copyright (c) 1980, 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) 1980, 1993\n\
|
|
The Regents of the University of California. All rights reserved.\n";
|
|
#endif /* not lint */
|
|
|
|
#ifndef lint
|
|
#if 0
|
|
static char sccsid[] = "@(#)unexpand.c 8.1 (Berkeley) 6/6/93";
|
|
#endif
|
|
static const char rcsid[] =
|
|
"$Id: unexpand.c,v 1.3 1997/08/26 11:02:36 charnier Exp $";
|
|
#endif /* not lint */
|
|
|
|
/*
|
|
* unexpand - put tabs into a file replacing blanks
|
|
*/
|
|
#include <err.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
char genbuf[BUFSIZ];
|
|
char linebuf[BUFSIZ];
|
|
int all;
|
|
|
|
static void usage __P((void));
|
|
void tabify __P((char));
|
|
|
|
int
|
|
main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
register char *cp;
|
|
|
|
argc--, argv++;
|
|
if (argc > 0 && argv[0][0] == '-') {
|
|
if (strcmp(argv[0], "-a") != 0)
|
|
usage();
|
|
all++;
|
|
argc--, argv++;
|
|
}
|
|
do {
|
|
if (argc > 0) {
|
|
if (freopen(argv[0], "r", stdin) == NULL)
|
|
err(1, "%s", argv[0]);
|
|
argc--, argv++;
|
|
}
|
|
while (fgets(genbuf, BUFSIZ, stdin) != NULL) {
|
|
for (cp = linebuf; *cp; cp++)
|
|
continue;
|
|
if (cp > linebuf)
|
|
cp[-1] = 0;
|
|
tabify(all);
|
|
printf("%s", linebuf);
|
|
}
|
|
} while (argc > 0);
|
|
exit(0);
|
|
}
|
|
|
|
static void
|
|
usage()
|
|
{
|
|
fprintf(stderr, "usage: unexpand [-a] file ...\n");
|
|
exit(1);
|
|
}
|
|
|
|
void
|
|
tabify(c)
|
|
char c;
|
|
{
|
|
register char *cp, *dp;
|
|
register int dcol;
|
|
int ocol;
|
|
|
|
ocol = 0;
|
|
dcol = 0;
|
|
cp = genbuf, dp = linebuf;
|
|
for (;;) {
|
|
switch (*cp) {
|
|
|
|
case ' ':
|
|
dcol++;
|
|
break;
|
|
|
|
case '\t':
|
|
dcol += 8;
|
|
dcol &= ~07;
|
|
break;
|
|
|
|
default:
|
|
while (((ocol + 8) &~ 07) <= dcol) {
|
|
if (ocol + 1 == dcol)
|
|
break;
|
|
*dp++ = '\t';
|
|
ocol += 8;
|
|
ocol &= ~07;
|
|
}
|
|
while (ocol < dcol) {
|
|
*dp++ = ' ';
|
|
ocol++;
|
|
}
|
|
if (*cp == 0 || c == 0) {
|
|
strcpy(dp, cp);
|
|
return;
|
|
}
|
|
*dp++ = *cp;
|
|
ocol++, dcol++;
|
|
}
|
|
cp++;
|
|
}
|
|
}
|