mirror of https://github.com/acidanthera/audk.git
111 lines
3.0 KiB
C
111 lines
3.0 KiB
C
/** @file
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Transformations between the EFI_TIME structure and struct tm or time_t.
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Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials are licensed and made available under
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the terms and conditions of the BSD License that accompanies this distribution.
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The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <Uefi.h>
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#include <LibConfig.h>
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#include <time.h>
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#include "tzfile.h"
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#include <MainData.h>
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/** Convert an EFI_TIME structure into a C Standard tm structure.
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@param[in] ET Pointer to the EFI_TIME structure to convert.
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@param[out] BT Pointer to the tm structure to receive the converted time.
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*/
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void
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Efi2Tm(
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IN EFI_TIME *ET,
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OUT struct tm *BT
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)
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{
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// Convert EFI time to broken-down time.
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BT->tm_year = ET->Year - TM_YEAR_BASE;
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BT->tm_mon = ET->Month - 1; // BD time is zero based, EFI is 1 based
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BT->tm_mday = ET->Day;
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BT->tm_hour = ET->Hour;
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BT->tm_min = ET->Minute;
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BT->tm_sec = ET->Second;
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BT->tm_isdst = -1;
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BT->tm_zoneoff = ET->TimeZone;
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BT->tm_daylight = ET->Daylight;
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BT->tm_Nano = ET->Nanosecond;
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}
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/** Convert an EFI_TIME structure into a time_t value.
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@param[in] EfiBDtime Pointer to the EFI_TIME structure to convert.
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@return The EFI_TIME converted into a time_t value.
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*/
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time_t
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Efi2Time(
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IN EFI_TIME *EfiBDtime
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)
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{
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Efi2Tm( EfiBDtime, &gMD->BDTime);
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return mktime( &gMD->BDTime);
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}
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/** Convert a C Standard tm structure into an EFI_TIME structure.
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@param[in] BT Pointer to the tm structure to convert.
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@param[out] ET Pointer to an EFI_TIME structure to receive the converted time.
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*/
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void
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Tm2Efi(
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IN struct tm *BT,
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OUT EFI_TIME *ET
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)
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{
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ET->Year = (UINT16)BT->tm_year + TM_YEAR_BASE;
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ET->Month = (UINT8)BT->tm_mon + 1;
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ET->Day = (UINT8)BT->tm_mday;
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ET->Hour = (UINT8)BT->tm_hour;
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ET->Minute = (UINT8)BT->tm_min;
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ET->Second = (UINT8)BT->tm_sec;
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ET->Nanosecond = (UINT32)BT->tm_Nano;
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ET->TimeZone = (INT16)BT->tm_zoneoff;
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ET->Daylight = (UINT8)BT->tm_daylight;
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}
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/** Convert a time_t value into an EFI_TIME structure.
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@param[in] CalTime Calendar time as a time_t value.
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@return Returns a newly malloced EFI_TIME structure containing
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the converted calendar time.
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@post It is the responsibility of the caller to free the
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returned structure before the application exits.
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*/
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EFI_TIME*
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Time2Efi(
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IN time_t CalTime
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)
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{
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struct tm *IT;
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EFI_TIME *ET = NULL;
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IT = gmtime(&CalTime);
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if(IT != NULL) {
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ET = malloc(sizeof(EFI_TIME));
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if(ET != NULL) {
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Tm2Efi(IT, ET);
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}
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}
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return ET;
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}
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