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/*
* libexplain - Explain errno values returned by libc functions
* Copyright (C) 2010 Peter Miller
* Written by Peter Miller <pmiller@opensource.org.au>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 3 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libexplain/config.h> /* for large file support */
#include <libexplain/libexplain.h>
#include <stdlib.h>
#include <unistd.h>
static void
process(FILE *fp)
{
for (;;)
{
char buffer[4096];
size_t n = explain_fread_or_die(buffer, 1, sizeof(buffer), fp);
if (!n)
break;
explain_fwrite_or_die(buffer, 1, n, stdout);
}
}
int
main(int argc, char **argv)
{
for (;;)
{
int c = getopt(argc, argv, "o:V");
if (c == EOF)
break;
switch (c)
{
case 'o':
explain_freopen_or_die(optarg, "w", stdout);
break;
case 'V':
/* version stub, ignore */
return 0;
default:
fprintf(stderr, "Usage: %ss [ -o <filename> ] "
"<filename>...\n", argv[0]);
return EXIT_FAILURE;
}
}
if (optind == argc)
process(stdin);
else
{
while (optind < argc)
{
FILE *fp = explain_fopen_or_die(argv[optind++], "r");
process(fp);
explain_fclose_or_die(fp);
}
}
explain_fflush_or_die(stdout);
return EXIT_SUCCESS;
}
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