busybox/coreutils/tee.c

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/* vi: set sw=4 ts=4: */
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/*
* Mini tee implementation for busybox
*
* Copyright (C) 1999,2000,2001 by Lineo, inc.
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* Written by Matt Kraai <kraai@alumni.carnegiemellon.edu>
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*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include "busybox.h"
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#include <getopt.h>
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#include <stdio.h>
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int
tee_main(int argc, char **argv)
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{
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char *mode = "w";
int c, i, status = 0, nfiles = 0;
FILE **files;
while ((c = getopt(argc, argv, "a")) != EOF) {
switch (c) {
case 'a':
mode = "a";
break;
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default:
usage(tee_usage);
}
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}
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files = (FILE **)xmalloc(sizeof(FILE *) * (argc - optind + 1));
files[nfiles++] = stdout;
while (optind < argc) {
if ((files[nfiles++] = fopen(argv[optind++], mode)) == NULL) {
nfiles--;
perror_msg("%s", argv[optind-1]);
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status = 1;
}
}
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while ((c = getchar()) != EOF)
for (i = 0; i < nfiles; i++)
putc(c, files[i]);
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return status;
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}
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/*
Local Variables:
c-file-style: "linux"
c-basic-offset: 4
tab-width: 4
End:
*/