pub_datetime.c

自已结累的Unix下C语言开发函数库

/*
 *日期和时间的一些函数
 *zyq - shilyu - cff 0901
 *functionnum 006
 */
 
#include "./../inc/pub.h"

#if !defined( DEBUG )
#define DEBUG
#endif

typedef struct Date 
{
 char   YYYY   [ 5 ];
 char   MM     [ 3 ];
 char   DD     [ 3 ];
}DATE ;

/* 001
 * FUNCTION NAME ：int  f_Is_Nleapyear ( unsigned short YYYY )
 * Usage: YYYY 是年份转换成的整数           
 * Discription: 检查YYYY是否闰年
 * OUTPUT: 0 - No, 1  - Yes , 
 */

int  Is_RunYear ( unsigned short YYYY )
{
   unsigned short           nian    ;
   unsigned short           N1      ;
   unsigned short           N2      ;
   unsigned short           N3      ;
       
    nian =  YYYY ;
    N1 = nian % 4 ;
    N2 = nian % 100 ;
    N3 = nian % 400 ;
    if ((( N1 == 0 ) && ( N2 != 0 )) || ( ( N2 == 0 ) && ( N3 == 0 ) ) )
        return 1 ;
     
    return 0 ;
}

/* 002
 * FUNCTION NAME ： IntervalDate ( char *pInDate , char *pOutDate , long n )
 * Usage:  pInDate  char [9],  pOutDate char [9] , n  long
 *         起始日期            输出日期            间隔天数
 * Disc :  计算起始日期的n天后的日期
 * OUTPUT：THE OUTPUT IS pOutDate is the date after  n days of InDate
 */

void IntervalDate  (  char *pInDate , char *pOutDate , long n )
{
   unsigned short     Year       ;
   unsigned short     Mon        ;
   unsigned short     Day        ;
   DATE               StartDate  ;
   DATE               EndDate    ;
   short              rc         ;
   unsigned long      i          ;
   char               TmpStr [4] ;
   
   i = 0 ;

   #ifdef  DEBUG
      printf ( "%s\n", pInDate  );
   #endif
      
   memset ( StartDate.YYYY , 0x00,  5  );
   memset ( StartDate.MM ,   0x00,  3  );
   memset ( StartDate.DD ,   0x00,  3  );
   
   memcpy ( StartDate.YYYY , pInDate     , 4 );
   memcpy ( StartDate.MM   , pInDate + 4 , 2 );
   memcpy ( StartDate.DD   , pInDate + 6 , 2 );

   #ifdef DEBUG
      printf ( "%s+++%s+++%s\n",  StartDate.YYYY ,  StartDate.MM ,  
               StartDate.DD  );
   #endif
   
   Year = atoi ( StartDate.YYYY  );
   Mon  = atoi ( StartDate.MM    );
   Day  = atoi ( StartDate.DD    );

   #ifdef DEBUG
      printf ( "%d---%d---%d\n", Year , Mon , Day  );
   #endif
 
   if ( n == 0 )
   {
      strcpy (  pOutDate , pInDate );
      return ;	
   }	
   
   if ( n > 0 )
   {
      for ( ;; )
      {
         if ( i < n )
         {
            i ++ ;
       	   Day = Day + 1 ;
   	     
   	      rc = Is_RunYear ( Year );
   	      if ( rc == 0 )
   	      {
   	         if ( ( Day == 29 ) && ( Mon == 2 ) )
   	         {
   	            Day = 1 ;
   	            Mon = Mon + 1 ;
   	         }
   	      }
   	      else
   	      {
   	         if ( ( Day == 30 ) && ( Mon == 2 ) )
   	         {
   	            Day = 1 ;
   	            Mon = Mon + 1 ;
   	         }
   	      }
   	       
   	      if ( ( Day == 31 ) && ( Mon == 4 ||  Mon == 6 || Mon == 9 ||
   	                              Mon == 11 ) )
   	      {
   	         Day = 1 ;
   	         Mon = Mon + 1 ;
   	      }
   	       
   	      if ( ( Day == 32 ) && ( Mon == 1 || Mon == 3 ||  Mon == 5 ||
   	                              Mon == 7 || Mon == 8 || Mon == 10 ) )
   	      {
   	         Day = 1 ;
   	         Mon = Mon + 1 ;
   	      }
   	       
   	      if (  Day == 32 &&  Mon == 12 )
   	      {
   	         Day = 1 ;
   	         Mon = 1 ;
   	         Year = Year + 1 ;
   	      }
   	   }
   	   else
         {
   	     break ;
         }
      }       
   }	

   if ( n < 0 )
   {
      n = 0 - n  ;
      for ( ;; )
      {
         if ( i < n )
   	   {
            i ++ ;
       	   Day = Day - 1 ;
   	     
   	    rc = Is_RunYear ( Year );
   	    if ( rc == 0 )
   	    {
   	       if ( ( Day == 0 ) && ( Mon == 3 ) )
   	       {
   	          Day = 28 ;
   	          Mon = Mon - 1 ;
   	       }
   	    }
   	    else
   	    {
   	       if ( ( Day == 0 ) && ( Mon == 3 ) )
   	       {
   	          Day = 29 ;
   	          Mon = Mon - 1 ;
   	       }
   	    }
   	     
   	    if ( ( Day == 0 ) && ( Mon == 2 || Mon == 4 ||  Mon == 6 || 
   	                           Mon == 9 || Mon == 8  || Mon == 11 ) )
   	    {
   	       Day = 31 ;
   	       Mon = Mon - 1 ;
   	    }
   	     
   	     
   	    if ( ( Day == 0 ) && ( Mon == 12 || Mon == 5 || Mon == 7 ||
   	                           Mon == 10 ) )
   	    {
   	       Day = 30 ;
   	       Mon = Mon - 1 ;
   	    }
   	     
   	    if (  Day == 0 &&  Mon == 1 )
   	    {
   	       Day = 31 ;
   	       Mon = 12 ;
   	       Year = Year - 1 ;
   	    }
         }
   	 else
   	    break ;
      }
   }

   #ifdef  DEBUG
      printf ( "%d---%d---%d\n", Year , Mon , Day  );
   #endif

   memset ( pOutDate , 0x00 , sizeof ( pOutDate ) ) ;
   memset ( TmpStr ,   0x00 , sizeof ( TmpStr   ) ) ;
   
   sprintf( TmpStr, "%04d%02d%02d", Year ,  Mon  , Day );  
       
   strcpy ( pOutDate ,  TmpStr ) ;
          
   return ;   
}

/* 003
 *将日期格式化输出 yyyy年mm月dd日 
 */
void OutChinaDate ( InputStr, OutputStr )
char     *InputStr  ;
char     *OutputStr ;
{
   char  TmpDate[ 15 ] ;
   char  TmpStr [ 15 ] ;

   memset( TmpStr , 0x00, sizeof( TmpStr ) ) ;
   memcpy( TmpStr, InputStr, 4 ) ;
   strcpy( TmpDate, TmpStr ) ;
   strcat( TmpDate, "年" ) ;

   memset( TmpStr , 0x00, sizeof( TmpStr ) ) ;
   memcpy( TmpStr, InputStr+4, 2 ) ;
   strcat( TmpDate, TmpStr ) ;
   strcat( TmpDate, "月" ) ;

   memset( TmpStr , 0x00, sizeof( TmpStr ) ) ;
   memcpy( TmpStr, InputStr+6, 2 ) ;
   strcat( TmpDate, TmpStr ) ;
   strcat( TmpDate, "日" ) ;

   strcpy ( OutputStr , TmpDate ) ;
}   

/* 004
 *获得当前次准确时间
 */
int GetCurtTimeb( struct timeb *ptimeb )
{
	ftime( ptimeb ) ;
	return OK ;
} 

/* 005
  *计算得到两个时间之间有多长返回为毫秒
  */
int GetBetweenTimeb1ToTimeb2( timeb1, timeb2, pStrTime )
struct timeb timeb1, timeb2 ;
char   *pStrTime ;
{
   sprintf( pStrTime, "%06d", (timeb2.time -timeb1.time ) * 1000+
                            timeb2.millitm - timeb1.millitm);
                            
	return OK ;
}

/* 006
 *获得本地日期和时间
 */
void getlocaldatetime( char *pStrDateTime )
{
   char TmpBuf[100];

   struct tm   *time_p;
   time_t timeval;

   time(&timeval);
   time_p = localtime ( &timeval) ;

   memset( TmpBuf, 0x00, sizeof( TmpBuf ));
   sprintf ( TmpBuf, "20%02d%02d%02d%02d%02d%02d", time_p->tm_year - 100, time_p->tm_mon + 1, time_p->tm_mday,
   time_p->tm_hour, time_p->tm_min, time_p->tm_sec) ;

   memcpy( pStrDateTime, TmpBuf, strlen( TmpBuf ) );
}