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

/*==LICENSE==*

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

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


const Uuid kNilGuid;


/*****************************************************************************
*
*   Exports
*
***/

//============================================================================
Uuid::Uuid (const wchar_t str[]) {
    
    GuidFromString(str, this);
}

//============================================================================
Uuid::Uuid (const uint8_t buf[], unsigned length) {
    
    GuidFromHex(buf, length, this);
}

//============================================================================
unsigned GuidHash (const Uuid & uuid) {
    
    CHashValue hash(&uuid.data, sizeof(uuid.data));
    return hash.GetHash();
}

//============================================================================
static const wchar_t s_hexChars[] = L"0123456789ABCDEF";
const wchar_t * GuidToHex (const Uuid & uuid, wchar_t * dst, unsigned chars) {
    
    wchar_t * str = ALLOCA(wchar_t, sizeof(uuid.data) * 2 + 1);
    wchar_t * cur = str;
    
    for (unsigned i = 0; i < sizeof(uuid.data); ++i) {
        *cur++ = s_hexChars[(uuid.data[i] >> 4) & 0x0f];
        *cur++ = s_hexChars[uuid.data[i] & 0x0f];
    }
    *cur = 0;
    
    StrCopy(dst, str, chars);
    return dst;
}

//============================================================================
bool GuidFromHex (const uint8_t buf[], unsigned length, Uuid * uuid) {

    ASSERT(length == msizeof(Uuid, data));
    MemCopy(uuid->data, buf, msizeof(Uuid, data));
    return true;
}