strftime.c
2.54 KB
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 1999-2001, 2007, 2009-2012 Free Software Foundation,
Inc.
GNU Mailutils 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 3, or (at your option)
any later version.
GNU Mailutils 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 GNU Mailutils. If not, see <http://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <mailutils/error.h>
#include <mailutils/errno.h>
#include <mailutils/datetime.h>
#include <mailutils/stream.h>
#include <mailutils/cctype.h>
#include <mailutils/cstr.h>
#include <mailutils/stdstream.h>
void
usage ()
{
mu_stream_printf (mu_strout, "usage: %s [-format=FMT] [-tz=TZ]\n",
mu_program_name);
exit (0);
}
int
main (int argc, char **argv)
{
int rc, i;
char *format = "%c";
char *buf = NULL;
size_t size = 0;
size_t n;
struct mu_timezone tz, *tzp = NULL;
mu_set_program_name (argv[0]);
mu_set_program_name (argv[0]);
mu_stdstream_setup (MU_STDSTREAM_RESET_NONE);
memset (&tz, 0, sizeof tz);
for (i = 1; i < argc; i++)
{
char *opt = argv[i];
if (strncmp (opt, "-format=", 8) == 0)
format = opt + 8;
else if (strncmp (opt, "-tz=", 4) == 0)
{
int sign;
int n = atoi (opt + 4);
if (n < 0)
{
sign = -1;
n = - n;
}
else
sign = 1;
tz.utc_offset = sign * ((n / 100 * 60) + n % 100) * 60;
tzp = &tz;
}
else if (strcmp (opt, "-h") == 0)
usage ();
else
{
mu_error ("%s: unrecognized argument", opt);
exit (1);
}
}
while ((rc = mu_stream_getline (mu_strin, &buf, &size, &n)) == 0 && n > 0)
{
char *p;
struct tm *tm;
time_t t;
mu_rtrim_class (buf, MU_CTYPE_ENDLN);
if (*buf == ';')
{
mu_printf ("%s\n", buf);
continue;
}
t = strtoul (buf, &p, 10);
if (*p)
{
mu_error ("bad input line near %s", p);
continue;
}
tm = gmtime (&t);
mu_c_streamftime (mu_strout, format, tm, tzp);
mu_printf ("\n");
}
if (rc)
{
mu_error ("%s", mu_strerror (rc));
return 1;
}
return 0;
}