#include <stdlib.h>
#include <stdio.h>
#include "wv.h"

void wvGetDTTM(DTTM *item,wvStream *fd)
	{
	U16 a = read_16ubit(fd);
	U16 b = read_16ubit(fd);
	wvCreateDTTM(item,a,b);
	}

void wvGetDTTMFromBucket(DTTM *item,U8 *pointer)
	{
	U16 a = dread_16ubit(NULL,&pointer);
	U16 b = dread_16ubit(NULL,&pointer);
	wvCreateDTTM(item,a,b);
	}


void wvCreateDTTM(DTTM *dttm,U16 temp1_16,U16 temp2_16)
    {
    dttm->mint = temp1_16 & 0x003F;
    dttm->hr = (temp1_16 & 0x07C0)>>6;
    dttm->dom = (temp1_16 & 0xF800)>>11;

    dttm->mon = temp2_16 & 0x000F;
    dttm->yr = (temp2_16 & 0x1FF0)>>4;
    dttm->wdy = (temp2_16 & 0xE000)>>13;
    }


void wvInitDTTM(DTTM *dttm)
    {
    dttm->mint = 0;
    dttm->hr = 0;
    dttm->dom = 0;

    dttm->mon = 0;
    dttm->yr = 0;
    dttm->wdy = 0;
    }

void wvCopyDTTM(DTTM *dest,DTTM *src)
    {
	memcpy(dest,src,sizeof(DTTM));
    }

void wvListDTTM(DTTM *src)
	{
	wvError(("min is %d\n",src->mint));
	wvError(("hr is %d\n",src->hr));
	wvError(("dom is %d\n",src->dom));
	wvError(("mon is %d\n",src->mon));
	wvError(("yr is %d\n",src->yr));
	wvError(("wdy is %d\n",src->wdy));
	}
/* 
dont free the char * back from this, its engine is
ctime
*/
char *wvDTTMtoUnix(DTTM *src)
	{
	/* 
	im concerned with the lack of yday to i run it
	through the system to fill it in before using asctime
	*/
	time_t t;
	struct tm out;
	wvListDTTM(src);
	out.tm_sec = 0;
	out.tm_min = src->mint;
	out.tm_hour = src->hr;
	out.tm_mday = src->dom;
	out.tm_mon = src->mon-1;
	out.tm_year = src->yr;
	out.tm_wday = src->wdy;
	out.tm_yday = 0;
	out.tm_isdst = -1;
	t = mktime(&out);
	if (t == -1)
		{
		wvWarning("Bad Time!!, not critical error\n");
		return(NULL);
		}
	return(ctime(&t));
	}
