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// **********************************************************************
//
// Copyright (c) 2003-2016 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/Config.h>
#ifndef ICE_HAS_CODECVT_UTF8
//
// It's better to exclude the file from the build, but it's not always
// easy to do.
//
#include <IceUtil/Unicode.h>
#include <IceUtil/Exception.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;
template<>
struct WstringHelper<2>
{
static ConversionResult toUTF8(
const wchar_t*& sourceStart, const wchar_t* sourceEnd,
Byte*& targetStart, Byte* targetEnd)
{
return ConvertUTF16toUTF8(
reinterpret_cast<const UTF16**>(&sourceStart),
reinterpret_cast<const UTF16*>(sourceEnd),
&targetStart, targetEnd, lenientConversion);
}
static ConversionResult fromUTF8(
const Byte*& sourceStart, const Byte* sourceEnd,
wchar_t*& targetStart, wchar_t* targetEnd)
{
return ConvertUTF8toUTF16(
&sourceStart, sourceEnd,
reinterpret_cast<UTF16**>(&targetStart),
reinterpret_cast<UTF16*>(targetEnd), lenientConversion);
}
};
template<>
struct WstringHelper<4>
{
static ConversionResult toUTF8(
const wchar_t*& sourceStart, const wchar_t* sourceEnd,
Byte*& targetStart, Byte* targetEnd)
{
return ConvertUTF32toUTF8(
reinterpret_cast<const UTF32**>(&sourceStart),
reinterpret_cast<const UTF32*>(sourceEnd),
&targetStart, targetEnd, lenientConversion);
}
static ConversionResult fromUTF8(
const Byte*& sourceStart, const Byte* sourceEnd,
wchar_t*& targetStart, wchar_t* targetEnd)
{
return ConvertUTF8toUTF32(
&sourceStart, sourceEnd,
reinterpret_cast<UTF32**>(&targetStart),
reinterpret_cast<UTF32*>(targetEnd), lenientConversion);
}
};
void checkResult(ConversionResult result)
{
switch (result)
{
case conversionOK:
break;
case sourceExhausted:
throw IceUtil::IllegalConversionException(__FILE__, __LINE__, "source exhausted");
case sourceIllegal:
throw IceUtil::IllegalConversionException(__FILE__, __LINE__, "source illegal");
case targetExhausted:
throw IceUtil::IllegalConversionException(__FILE__, __LINE__, "source illegal");
default:
{
assert(0);
throw IceUtil::IllegalConversionException(__FILE__, __LINE__);
}
}
}
}
//
// convertXXX functions
//
bool
IceUtilInternal::convertUTFWstringToUTF8(const wchar_t*& sourceStart, const wchar_t* sourceEnd,
Byte*& targetStart, Byte* targetEnd)
{
ConversionResult result = WstringHelper<sizeof(wchar_t)>::toUTF8(
sourceStart, sourceEnd, targetStart, targetEnd);
if(result == targetExhausted)
{
return false;
}
else
{
checkResult(result);
return true;
}
}
void
IceUtilInternal::convertUTF8ToUTFWstring(const Byte*& sourceStart, const Byte* sourceEnd, std::wstring& target)
{
size_t sourceSize = static_cast<size_t>(sourceEnd - sourceStart);
target.resize(sourceSize);
wchar_t* targetStart = const_cast<wchar_t*>(target.data());
wchar_t* targetEnd = targetStart + sourceSize;
ConversionResult result = WstringHelper<sizeof(wchar_t)>::fromUTF8(sourceStart, sourceEnd,
targetStart, targetEnd);
checkResult(result);
target.resize(targetStart - target.data());
}
void
IceUtilInternal::convertUTF8ToUTF16(const vector<unsigned char>& source, vector<unsigned short>& target)
{
target.resize(source.size());
const unsigned char* sourceStart = &source[0];
const unsigned char* sourceEnd = &source[0] + source.size();
unsigned short* targetStart = &target[0];
unsigned short* targetEnd = &target[0] + target.size();
ConversionResult result = ConvertUTF8toUTF16(&sourceStart, sourceEnd, &targetStart, targetEnd, lenientConversion);
checkResult(result);
target.resize(targetStart - &target[0]);
}
void
IceUtilInternal::convertUTF8ToUTF32(const vector<unsigned char>& source, vector<unsigned int>& target)
{
target.resize(source.size());
const unsigned char* sourceStart = &source[0];
const unsigned char* sourceEnd = &source[0] + source.size();
unsigned int* targetStart = &target[0];
unsigned int* targetEnd = &target[0] + target.size();
ConversionResult result = ConvertUTF8toUTF32(&sourceStart, sourceEnd, &targetStart, targetEnd, lenientConversion);
checkResult(result);
target.resize(targetStart - &target[0]);
}
void
IceUtilInternal::convertUTF32ToUTF8(const vector<unsigned int>& source, vector<unsigned char>& target)
{
target.resize(source.size() * 4);
const unsigned int* sourceStart = &source[0];
const unsigned int* sourceEnd = &source[0] + source.size();
unsigned char* targetStart = &target[0];
unsigned char* targetEnd = &target[0] + target.size();
ConversionResult result = ConvertUTF32toUTF8(&sourceStart, sourceEnd, &targetStart, targetEnd, lenientConversion);
checkResult(result);
target.resize(targetStart - &target[0]);
}
#endif
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