pc_udate.c

nucleus 文件系统,内核和彩色图形系统,在小系统上非常好用

/*
* EBS - RTFS (Real Time File Manager)
*
* Copyright Peter Van Oudenaren , 1993
* All rights reserved.
* This code may not be redistributed in source or linkable object form
* without the consent of its author.
*/
/*
*****************************************************************************
	PC_GETSYSDATE - Get the current system time and date (USER SUPPLIED)

				   
Summary
	
	#include <pcdisk.h>

	DATESTR *pc_getsysdate(pd)
		DATESTR *pd;     put result here  


 Description
 	When the system needs to date stamp a file it will call this routine
 	to get the current time and date. YOU must modify the shipped routine
 	to support your hardware's time and date routines. If you don't modify
 	this routine the file date on all files will be the same.

	The source for this routine is in file pc_udate.c and is self explanatory.

	NOTE: Be sure to retain the property of returning its argument. The 
		  package depends on it.

 Returns
 	The argument it was passed. A structure containing date and time info.

Example:
	#include <pcdisk.h>

	DATESTR crdate;   

	Load the inode copy name,ext,attr,cluster, size,datetime
	pc_init_inode( pobj->finode, filename, fileext, 
					attr, cluster, 0L ,pc_getsysdate(&crdate) );

*****************************************************************************
*/

#include "pcdisk.h"


/* get date and time from the host system */
DATESTR *pc_getsysdate(DATESTR *pd)                                  /*__fn__*/
{
	UCOUNT  year;       /* relative to 1980 */ 
	UCOUNT  month;      /* 1 - 12 */ 
	UCOUNT  day;        /* 1 - 31 */ 
	UCOUNT  hour;
	UCOUNT  minute;
	UCOUNT  sec;				/* Note: seconds are 2 second/per. ie 3 == 6 seconds */
#if(0)
 /* This code will work if yoiu have ANSI time functions. otherwise get 
    rid of it and look below where the time is wired to 3/28/8. you may modify
    that code to work in your environment. */
#include <time.h>
    struct tm *timeptr;
    time_t timer;

    time(&timer);
    timeptr = localtime(&timer);
   
	hour    =   (UCOUNT) timeptr->tm_hour;
	minute  =   (UCOUNT) timeptr->tm_min;
	sec     =   (UCOUNT) (timeptr->tm_sec/2); 
    /* Date comes back relative to 1900 (eg 93). The pc wants it relative to
       1980. so subtract 80 */
	year    =   (UCOUNT) (timeptr->tm_year-80);
	month   =   (UCOUNT) (timeptr->tm_mon+1);
	day     =   (UCOUNT) timeptr->tm_mday;
#else
    /* This code is useless but very generic */
	/* Hardwire for now */
	/* 7:37:28 PM */
	hour = 19;
	minute = 37;
	sec = 14;
	/* 3-28-88 */
	year = 8;       /* relative to 1980 */ 
	month = 3;      /* 1 - 12 */ 
	day = 28;        /* 1 - 31 */ 

#endif
	pd->time = (UCOUNT) ( (hour << 11) | (minute << 5) | sec);
	pd->date = (UCOUNT) ( (year << 9) | (month << 5) | day);

	return (pd);
}