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/*
* Copyright (C) 2014 René Kijewski <rene.kijewski@fu-berlin.de>
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* This library 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 library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @ingroup tests
* @{
* @file
* @brief Test the `struct tm` helpers in "tm.h" of the module "timex".
* @author René Kijewski <rene.kijewski@fu-berlin.de>
* @}
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include "shell.h"
#include "tm.h"
static const char MON_NAMES[12][3] = {
"JAN", "FEB", "MAR", "APR",
"MAY", "JUN", "JUL", "AUG",
"SEP", "OCT", "NOV", "DEC",
};
static const char DAY_NAMES[7][3] = {
"SUN", "MON", "TUE", "WED", "THU", "FRI", "SAT"
};
static const char BOOL_NAMES[2][3] = { "NO", "YES" };
bool proper_atoi(const char *a, int *i)
{
char *end;
*i = strtol(a, &end, 0);
return (a != end) && (*end == '\0');
}
static int cmd_days_in(int argc, char **argv)
{
int mon;
if ((argc != 2) || (proper_atoi(argv[1], &mon) != 1) || (mon < 1) || (mon > 12)) {
printf("Usage: %s <Month[1..12]>\n", argv[0]);
return 1;
}
else {
printf("There are %d days in %.3s in common years.\n",
TM_MON_DAYS[mon - 1], MON_NAMES[mon - 1]);
return 0;
}
}
static int cmd_leap_year(int argc, char **argv)
{
int year;
if ((argc != 2) || (proper_atoi(argv[1], &year) != 1)) {
printf("Usage: %s <Year>\n", argv[0]);
return 1;
}
else {
printf("Was %d a leap year? %.3s.\n",
year, BOOL_NAMES[tm_is_leap_year(year)]);
return 0;
}
}
static int cmd_doomsday(int argc, char **argv)
{
int year;
if ((argc != 2) || (proper_atoi(argv[1], &year) != 1)) {
printf("Usage: %s <Year>\n", argv[0]);
return 1;
}
else {
printf("What weekday was MAR 0 of %d? %.3s.\n",
year, DAY_NAMES[tm_doomsday(year) % 7]);
return 0;
}
}
static int cmd_day(int argc, char **argv)
{
int year, mon, day;
if ((argc != 4) || (proper_atoi(argv[1], &year) != 1)
|| (proper_atoi(argv[2], &mon) != 1)
|| (proper_atoi(argv[3], &day) != 1)) {
printf("Usage: %s <Year> <Month[1..12]> <Day[1..31]>\n", argv[0]);
return 1;
}
else {
if (!tm_is_valid_date(year, mon - 1, day)) {
puts("The supplied date is invalid, but no error should occur.");
}
int wday, yday;
tm_get_wyday(year, mon - 1, day, &wday, &yday);
printf("What weekday was %04d-%02d-%02d? The %d(th) day of the year was a %.3s.\n",
year, mon, day, yday + 1, DAY_NAMES[wday]);
return 0;
}
}
static const shell_command_t shell_commands[] = {
{ "days_in", "Tells you the number of days in a month.", cmd_days_in },
{ "leap_year", "Tells you if a supplied year is a leap year.", cmd_leap_year },
{ "doomsday", "Tells you the wday Doomsday of the supplied year.", cmd_doomsday },
{ "day", "Tells you the day of the supplied date.", cmd_day },
{ NULL, NULL, NULL }
};
int main(void)
{
puts("`struct tm` utility shell.");
char line_buf[SHELL_DEFAULT_BUFSIZE];
shell_run(shell_commands, line_buf, SHELL_DEFAULT_BUFSIZE);
return 0;
}