/*-------------------- In the name of God ----------------------*\
PrayerTimes 0.3
Islamic prayer times calculator
Developed by:
Mohammad Ebrahim Mohammadi Panah <ebrahim at mohammadi dot ir>
------------------------------------------------------------------
Copyright 2009, Mohammad Ebrahim Mohammadi Panah
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 can get a copy of the GNU General Public License from
http://www.gnu.org/copyleft/gpl.html
\*--------------------------------------------------------------*/
#include <ctime>
#include <cmath>
#include <cstring>
#include <unistd.h>
#include <getopt.h>
#include "prayertimes.hpp"
#define PROG_NAME "prayertimes"
#define PROG_NAME_FRIENDLY "PrayerTimes"
#define PROG_VERSION "0.3"
static const char* TimeName[] =
{
"Fajr",
"Sunrise",
"Dhuhr",
"Asr",
"Sunset",
"Maghrib",
"Isha",
};
void print_help(FILE* f)
{
fputs(PROG_NAME_FRIENDLY " " PROG_VERSION "\n\n", stderr);
fputs("Usage: " PROG_NAME " options...\n"
"\n"
" Options\n"
" --help -h you're reading it\n"
" --version -v prints name and version, then exits\n"
" --date arg -d get prayer times for arbitrary date\n"
" --timezone arg -z get prayer times for arbitrary timezone\n"
" * --latitude arg -l latitude of desired location\n"
" * --longitude arg -n longitude of desired location\n"
" --calc-method arg -c select prayer time calculation method\n"
" --asr-juristic-method arg -a select Juristic method for calculating Asr prayer time\n"
" --high-lats-method arg -i select adjusting method for higher latitude\n"
" --dhuhr-minutes arg minutes after mid-way for calculating Dhuhr prayer time\n"
" ** --maghrib-minutes arg minutes after sunset for calculating Maghrib prayer time\n"
" ** --isha-minutes arg minutes after Maghrib for calculating Isha prayer time\n"
" ** --fajr-angle arg angle for calculating Fajr prayer time\n"
" ** --maghrib-angle arg angle for calculating Maghrib prayer time\n"
" ** --isha-angle arg angle for calculating Isha prayer time\n"
"\n"
" * These options are required\n"
" ** By providing any of these options the calculation method is set to custom\n"
"\n"
" Possible arguments for --calc-method\n"
" jafari Ithna Ashari\n"
" karachi University of Islamic Sciences, Karachi\n"
" isna Islamic Society of North America (ISNA)\n"
" mwl Muslim World League (MWL)\n"
" makkah Umm al-Qura, Makkah\n"
" egypt Egyptian General Authority of Survey\n"
" custom Custom Setting\n"
"\n"
" Possible arguments for --asr-juristic-method\n"
" shafii Shafii (standard)\n"
" hanafi Hanafi\n"
"\n"
" Possible arguments for --high-lats-method\n"
" none No adjustment\n"
" midnight middle of night\n"
" oneseventh 1/7th of night\n"
" anglebased angle/60th of night\n"
, stderr);
}
int main(int argc, char* argv[])
{
PrayerTimes prayer_times;
double latitude = NAN; // 35.7061
double longitude = NAN; // 51.4358
time_t date = time(NULL);
double timezone = NAN;
// Parse options
for (;;)
{
static option long_options[] =
{
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, 'v' },
{ "date", required_argument, NULL, 'd' },
{ "timezone", required_argument, NULL, 'z' },
{ "latitude", required_argument, NULL, 'l' },
{ "longitude", required_argument, NULL, 'n' },
{ "calc-method", required_argument, NULL, 'c' },
{ "asr-juristic-method", required_argument, NULL, 'a' },
{ "high-lats-method", required_argument, NULL, 'i' },
{ "dhuhr-minutes", required_argument, NULL, 0 },
{ "maghrib-minutes", required_argument, NULL, 0 },
{ "isha-minutes", required_argument, NULL, 0 },
{ "fajr-angle", required_argument, NULL, 0 },
{ "maghrib-angle", required_argument, NULL, 0 },
{ "isha-angle", required_argument, NULL, 0 },
{ 0, 0, 0, 0 }
};
enum // long options missing a short form
{
DHUHR_MINUTES = 9,
MAGHRIB_MINUTES,
ISHA_MINUTES,
FAJR_ANGLE,
MAGHRIB_ANGLE,
ISHA_ANGLE,
};
int option_index = 0;
int c = getopt_long(argc, argv, "hvd:z:l:n:c:a:i:", long_options, &option_index);
if (c == -1)
break; // Last option
if (!optarg && c != 'h' && c != 'v')
{
fprintf(stderr, "Error: %s option requires an argument\n", long_options[option_index].name);
return 2;
}
switch (c)
{
case 0:
double arg;
if (sscanf(optarg, "%lf", &arg) != 1)
{
fprintf(stderr, "Error: Invalid number '%s'\n", optarg);
return 2;
}
switch (option_index)
{
case DHUHR_MINUTES:
prayer_times.set_dhuhr_minutes(arg);
break;
case MAGHRIB_MINUTES:
prayer_times.set_maghrib_minutes(arg);
break;
case ISHA_MINUTES:
prayer_times.set_isha_minutes(arg);
break;
case FAJR_ANGLE:
prayer_times.set_fajr_angle(arg);
break;
case MAGHRIB_ANGLE:
prayer_times.set_maghrib_angle(arg);
break;
case ISHA_ANGLE:
prayer_times.set_isha_angle(arg);
break;
default:
fprintf(stderr, "Error: Invalid command line option\n");
return 2;
}
break;
case 'h': // --help
print_help(stdout);
return 0;
case 'v': // --version
puts(PROG_NAME_FRIENDLY " " PROG_VERSION);
return 0;
case 'd': // --date
{
tm* new_date = getdate(optarg);
if (!new_date)
{
fprintf(stderr, "Error: Failed to parse '%s' as date (%m)\n", optarg);
return 2;
}
date = mktime(new_date);
break;
}
case 'z': // --timezone
if (sscanf(optarg, "%lf", &timezone) != 1)
{
fprintf(stderr, "Error: Invalid timezone '%s'\n", optarg);
return 2;
}
break;
case 'l': // --latitude
if (sscanf(optarg, "%lf", &latitude) != 1)
{
fprintf(stderr, "Error: Invalid latitude '%s'\n", optarg);
return 2;
}
break;
case 'n': // --longitude
if (sscanf(optarg, "%lf", &longitude) != 1)
{
fprintf(stderr, "Error: Invalid longitude '%s'\n", optarg);
return 2;
}
break;
case 'c': // --calc-method
if (strcmp(optarg, "jafari") == 0)
prayer_times.set_calc_method(PrayerTimes::Jafari);
else if (strcmp(optarg, "karachi") == 0)
prayer_times.set_calc_method(PrayerTimes::Karachi);
else if (strcmp(optarg, "isna") == 0)
prayer_times.set_calc_method(PrayerTimes::ISNA);
else if (strcmp(optarg, "mwl") == 0)
prayer_times.set_calc_method(PrayerTimes::MWL);
else if (strcmp(optarg, "makkah") == 0)
prayer_times.set_calc_method(PrayerTimes::Makkah);
else if (strcmp(optarg, "egypt") == 0)
prayer_times.set_calc_method(PrayerTimes::Egypt);
else if (strcmp(optarg, "custom") == 0)
prayer_times.set_calc_method(PrayerTimes::Custom);
else
{
fprintf(stderr, "Error: Unknown method '%s'\n", optarg);
return 2;
}
break;
case 'a': // --asr-juristic-method
if (strcmp(optarg, "shafii") == 0)
prayer_times.set_asr_method(PrayerTimes::Shafii);
else if (strcmp(optarg, "hanafi") == 0)
prayer_times.set_asr_method(PrayerTimes::Hanafi);
else
{
fprintf(stderr, "Error: Unknown method '%s'\n", optarg);
return 2;
}
break;
case 'i': // --high-lats-method
if (strcmp(optarg, "none") == 0)
prayer_times.set_high_lats_adjust_method(PrayerTimes::None);
else if (strcmp(optarg, "midnight") == 0)
prayer_times.set_high_lats_adjust_method(PrayerTimes::MidNight);
else if (strcmp(optarg, "oneseventh") == 0)
prayer_times.set_high_lats_adjust_method(PrayerTimes::OneSeventh);
else if (strcmp(optarg, "anglebased") == 0)
prayer_times.set_high_lats_adjust_method(PrayerTimes::AngleBased);
else
{
fprintf(stderr, "Error: Unknown method '%s'\n", optarg);
return 2;
}
break;
default:
fprintf(stderr, "Error: Unknown option '%c'\n", c);
print_help(stderr);
return 2;
}
}
if (isnan(latitude) || isnan(longitude))
{
fprintf(stderr, "Error: You must provide both latitude and longitude\n");
return 2;
}
fputs(PROG_NAME_FRIENDLY " " PROG_VERSION "\n\n", stderr);
if (isnan(timezone))
timezone = PrayerTimes::get_effective_timezone(date);
double times[PrayerTimes::TimesCount];
fprintf(stderr, "date : %s", ctime(&date));
fprintf(stderr, "timezone : %.1lf\n", timezone);
fprintf(stderr, "latitude : %.5lf\n", latitude);
fprintf(stderr, "longitude : %.5lf\n", longitude);
puts("");
prayer_times.get_prayer_times(date, latitude, longitude, timezone, times);
for (int i = 0; i < PrayerTimes::TimesCount; ++i)
printf("%8s : %s\n", TimeName[i], PrayerTimes::float_time_to_time24(times[i]).c_str());
return 0;
}