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// **********************************************************************
//
// Copyright (c) 2003-2005 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;
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
IceUtil::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
IceUtil::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
IceUtil::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;
}
//
// wstringToString and stringToWstring
//
string
IceUtil::wstringToString(const wstring& wstr)
{
string target;
size_t size = wstr.size() * 3 * (sizeof(wchar_t) / 2);
Byte* outBuf = new Byte[size];
Byte* targetStart = outBuf;
Byte* targetEnd = outBuf + size;
const wchar_t* sourceStart = wstr.data();
ConversionResult result =
convertUTFWstringToUTF8(
sourceStart, sourceStart + wstr.size(),
targetStart, targetEnd, lenientConversion);
if(result == conversionOK)
{
string s(reinterpret_cast<char*>(outBuf),
static_cast<size_t>(targetStart - outBuf));
s.swap(target);
}
delete[] outBuf;
return target;
}
wstring
IceUtil::stringToWstring(const string& str)
{
wstring result;
const Byte* sourceStart = reinterpret_cast<const Byte*>(str.data());
convertUTF8ToUTFWstring(sourceStart, sourceStart + str.size(),
result, lenientConversion);
//
// TODO: check the ConversionResult and do something with it!
//
return result;
}
#if defined(_MSC_VER) && (_MSC_VER >= 1300)
//
// See comments in IceUtil/Unicode.h
//
# if _MSC_VER < 1400
string
IceUtil::wstringToString(const basic_string<__wchar_t>& str)
{
return wstringToString(*reinterpret_cast<const wstring*>(&str));
}
basic_string<__wchar_t>
IceUtil::stringToNativeWstring(const string& str)
{
return reinterpret_cast<basic_string<__wchar_t>& >(stringToWstring(str));
}
# else
string
IceUtil::wstringToString(const basic_string<unsigned short>& str)
{
return wstringToString(*reinterpret_cast<const wstring*>(&str));
}
basic_string<unsigned short>
IceUtil::stringToTypedefWstring(const string& str)
{
return reinterpret_cast<basic_string<unsigned short>& >(stringToWstring(str));
}
# endif
#endif
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