hijri(伊斯兰)日历问题!

Question

我会将格里高利日期转换为Hijri(伊斯兰教)日期.可以在网上搜索后,我找到了一个转换它的源代码.我将代码从Java和PHP转换为C base.

工具有时候工作没有任何问题.但有些日子有问题.

我需要你的帮助来修复工具或可用的代码,没有任何问题!BTW我发现了另一个源代码(http://emr.cs.iit.edu/~reingold/calendar.C),它是C++库.因为我不知道C++是否有人可以将其转换为C Base或Objective C将是完美的(仍然不确定此代码是否正常工作).

PS您可以在以下网址查看正确的日期:islamicfinder.org/Hcal/index.php

void gregorian_to_hijri(int* h_y, int* h_m, int* h_d, int  g_y, int  g_m, int  g_d)
{
    int year, month, day;

    int zyr;
    int zd;
    int zm;
    int zy;

    float zjd;
    int zl;
    int zn;
    int zj;

    year = g_y;
    month = g_m;
    day = g_d;


    zyr = year;
    zd = day;
    zm = month;
    zy = zyr;

    if((zy > 1582) || ((zy == 1582) && (zm > 10)) || ((zy == 1582) && (zm == 10) && (zd > 14)))
    {
        zjd = ((1461 * (zy + 4800 + ((zm - 14) / 12))) / 4)
            + ((367 * (zm - 2 - 12 * (((zm - 14) / 12)))) / 12)
            - ((3 * (((zy + 4900 + ((zm - 14) / 12)) / 100))) / 4) + zd - 32075;
    }
    else
    {
        zjd = 367 * zy - ((7 * (zy + 5001 + ((zm - 9) / 7))) / 4)
            + ((275 * zm) / 9) + zd + 1729777;
    }

    zl = zjd - 1948440 + 10632;
    zn = ((zl - 1) / 10631);
    zl = zl - 10631 * zn + 354;
    zj = (((10985 - zl) / 5316)) * ((int)((50 * zl) / 17719))
        + ((zl / 5670)) * ((int)((43 * zl) / 15238));

    zl = zl - (((30 - zj) / 15)) * (((17719 * zj) / 50))
        - ((zj / 16)) * (((15238 * zj) / 43)) + 29;

    zm = ((24 * zl) / 709);
    zd = zl - ((709 * zm) / 24);
    zy = 30 * zn + zj - 30;

    *h_y = zy;
    *h_m = zm;
    *h_d = zd;
}

Answer 1

假设这是一个Mac(Cocoa)或iOS(Cocoa Touch)应用程序,因为那是你经常看到Objective C的地方,那么你可以这样做:

// Create a Gregorian Calendar
NSCalendar *gregorianCalendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];

// Set up components of a Gregorian date
NSDateComponents *gregorianComponents = [[NSDateComponents alloc] init];

gregorianComponents.day = 4;
gregorianComponents.month = 12;
gregorianComponents.year = 2010;

// Create the date
NSDate *date = [gregorianCalendar dateFromComponents:gregorianComponents];

[gregorianComponents release];
[gregorianCalendar release];


// Then create an Islamic calendar
NSCalendar *hijriCalendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSIslamicCivilCalendar];

// And grab those date components for the same date
NSDateComponents *hijriComponents = [hijriCalendar components:(NSDayCalendarUnit | 
                                                               NSMonthCalendarUnit |
                                                               NSYearCalendarUnit)
                                                     fromDate:date];


NSLog(@"[In Hijri calendar ->] Day: %ld, Month: %ld, Year:%ld", 
          [hijriComponents day],
          [hijriComponents month],
          [hijriComponents year]);

[hijriCalendar release];

如果您想要的只是当前日期,那么您可以完全跳过设置格里高利日期,然后执行以下操作:

// Create an Islamic calendar
NSCalendar *hijriCalendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSIslamicCalendar];

// And grab the date components for the current date
NSDateComponents *hijriComponents = [hijriCalendar components:(NSDayCalendarUnit | 
                                                               NSMonthCalendarUnit |
                                                               NSYearCalendarUnit)
                                                     fromDate:[NSDate date]];

[hijriCalendar release];