CWE-ou-minkata/Sources/Plasma/NucleusLib/pnUtils/Private/Win32/pnUtW32Time.cpp

/*==LICENSE==*

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Copyright (C) 2011  Cyan Worlds, Inc.

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Additional permissions under GNU GPL version 3 section 7

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*==LICENSE==*/
/*****************************************************************************
*
*   $/Plasma20/Sources/Plasma/NucleusLib/pnUtils/Private/Win32/pnUtW32Time.cpp
*   
***/

#include "../../Pch.h"
#pragma hdrstop


/*****************************************************************************
*
*   Local functions
*
***/

//============================================================================
static void FormatTime (
    qword       time,
    wchar const dateFmt[],
    wchar const timeFmt[],
    unsigned    chars,
    wchar *     buffer
) {
    COMPILER_ASSERT(sizeof(FILETIME) == sizeof(qword));

    SYSTEMTIME sysTime;
    FileTimeToSystemTime((FILETIME *)&time, &sysTime);

    unsigned offset = GetDateFormatW(
        LOCALE_SYSTEM_DEFAULT,
        0,
        &sysTime,
        dateFmt,
        buffer,
        chars
    );

    if (timeFmt) {
        // if we printed any characters, move offset back to overwrite the string terminator
        if (offset)
        --offset;

        offset += GetTimeFormatW(
            LOCALE_SYSTEM_DEFAULT,
            0,
            &sysTime,
            timeFmt,
            buffer + offset,
            chars - offset
        );
    }

    // if we didn't print any characters, NULL terminate the buffer
    if (!offset && chars)
        buffer[0] = 0;
}


/*****************************************************************************
*
*   Exported functions
*
***/

#ifdef HS_BUILD_FOR_WIN32

//===========================================================================
void TimeGetDesc (
    qword       time,
    TimeDesc *  desc
) {
    ASSERT(desc);

    SYSTEMTIME sysTime;
    COMPILER_ASSERT(sizeof(qword) == sizeof(FILETIME));
    FileTimeToSystemTime((FILETIME *) &time, &sysTime);

    desc->year      = sysTime.wYear;
    desc->month     = sysTime.wMonth;
    desc->day       = sysTime.wDay;
    desc->dayOfWeek = sysTime.wDayOfWeek;
    desc->hour      = sysTime.wHour;
    desc->minute    = sysTime.wMinute;
    desc->second    = sysTime.wSecond;
}

//============================================================================
qword TimeGetTime () {
    qword time;
    COMPILER_ASSERT(sizeof(qword) == sizeof(FILETIME));
    GetSystemTimeAsFileTime((FILETIME *) &time);
    return time;
}

//============================================================================
qword TimeGetLocalTime () {
    qword time;
    COMPILER_ASSERT(sizeof(qword) == sizeof(FILETIME));
    GetSystemTimeAsFileTime((FILETIME *) &time);
    FileTimeToLocalFileTime((FILETIME *) &time, (FILETIME *) &time);
    return time;
}

//============================================================================
void TimePrettyPrint (
    qword       time,
    unsigned    chars,
    wchar *     buffer
) {
    FormatTime(
        time,
        L"ddd MMM dd',' yyyy ",
        L"hh':'mm':'ss tt",
        chars,
        buffer
    );
}


#endif // HS_BUILD_FOR_WIN32