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// **********************************************************************
//
// Copyright (c) 2003-2015 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#include <IceUtil/Unicode.h>
#include <IceUtil/ConvertUTF.h>
using namespace std;
using namespace IceUtil;
using namespace IceUtilInternal;
namespace
{
//
// Helper class, base never defined
// Usage: WstringHelper<sizeof(wchar_t)>::toUTF8 and fromUTF8.
//
template<size_t wcharSize>
struct WstringHelper
{
static ConversionResult toUTF8(
const wchar_t*& sourceStart, const wchar_t* sourceEnd,
Byte*& targetStart, Byte* targetEnd, ConversionFlags flags);
static ConversionResult fromUTF8(
const Byte*& sourceStart, const Byte* sourceEnd,
wchar_t*& targetStart, wchar_t* targetEnd, ConversionFlags flags);
};
template<>
struct WstringHelper<2>
{
static ConversionResult toUTF8(
const wchar_t*& sourceStart, const wchar_t* sourceEnd,
Byte*& targetStart, Byte* targetEnd, ConversionFlags flags)
{
return ConvertUTF16toUTF8(
reinterpret_cast<const UTF16**>(&sourceStart),
reinterpret_cast<const UTF16*>(sourceEnd),
&targetStart, targetEnd, flags);
}
static ConversionResult fromUTF8(
const Byte*& sourceStart, const Byte* sourceEnd,
wchar_t*& targetStart, wchar_t* targetEnd, ConversionFlags flags)
{
return ConvertUTF8toUTF16(
&sourceStart, sourceEnd,
reinterpret_cast<UTF16**>(&targetStart),
reinterpret_cast<UTF16*>(targetEnd), flags);
}
};
template<>
struct WstringHelper<4>
{
static ConversionResult toUTF8(
const wchar_t*& sourceStart, const wchar_t* sourceEnd,
Byte*& targetStart, Byte* targetEnd, ConversionFlags flags)
{
return ConvertUTF32toUTF8(
reinterpret_cast<const UTF32**>(&sourceStart),
reinterpret_cast<const UTF32*>(sourceEnd),
&targetStart, targetEnd, flags);
}
static ConversionResult fromUTF8(
const Byte*& sourceStart, const Byte* sourceEnd,
wchar_t*& targetStart, wchar_t* targetEnd, ConversionFlags flags)
{
return ConvertUTF8toUTF32(
&sourceStart, sourceEnd,
reinterpret_cast<UTF32**>(&targetStart),
reinterpret_cast<UTF32*>(targetEnd), flags);
}
};
}
//
// convertXXX functions
//
ConversionResult
IceUtilInternal::convertUTFWstringToUTF8(
const wchar_t*& sourceStart, const wchar_t* sourceEnd,
Byte*& targetStart, Byte* targetEnd, ConversionFlags flags)
{
return WstringHelper<sizeof(wchar_t)>::toUTF8(
sourceStart, sourceEnd, targetStart, targetEnd, flags);
}
ConversionResult
IceUtilInternal::convertUTF8ToUTFWstring(
const Byte*& sourceStart, const Byte* sourceEnd,
wchar_t*& targetStart, wchar_t* targetEnd, ConversionFlags flags)
{
return WstringHelper<sizeof(wchar_t)>::fromUTF8(
sourceStart, sourceEnd, targetStart, targetEnd, flags);
}
ConversionResult
IceUtilInternal::convertUTF8ToUTFWstring(const Byte*& sourceStart, const Byte* sourceEnd,
std::wstring& target, ConversionFlags flags)
{
//
// Could be reimplemented without this temporary wchar_t buffer
//
size_t size = static_cast<size_t>(sourceEnd - sourceStart);
wchar_t* outBuf = new wchar_t[size];
wchar_t* targetStart = outBuf;
wchar_t* targetEnd = targetStart + size;
ConversionResult result =
convertUTF8ToUTFWstring(sourceStart, sourceEnd, targetStart,
targetEnd, flags);
if(result == conversionOK)
{
std::wstring s(outBuf, static_cast<size_t>(targetStart - outBuf));
s.swap(target);
}
delete[] outBuf;
return result;
}
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