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NativeString.cpp
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184 lines (151 loc) · 3.98 KB
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#include "../NativeString.h"
#include <iostream>
#include <sstream>
#include <windows.h>
namespace die {
NativeString::Encoding const NativeString::nativeEncoding = NativeString::utf16;
std::wstring utf8_to_ws(char const * text, int size)
{
if( size == 0 ) return std::wstring();
// std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> converter;
// blah = converter.from_bytes(text);
int total = MultiByteToWideChar(CP_UTF8,0,text,size,0,0);
std::wstring converted(total,L'\0');
if( MultiByteToWideChar(CP_UTF8,0,text,size,&converted[0],total) == 0 ) {
#ifdef NDEBUG
std::cerr << "error converting string" << std::endl;
#else
std::cerr << "error converting [" << text << "] size " << size << std::endl;
#endif
}
return converted;
}
std::wstring utf8_to_ws(char const * text)
{
auto converted = utf8_to_ws(text,-1);
converted.pop_back(); // remove the null terminated char
return converted;
}
std::wstring utf8_to_ws(std::string const & text)
{
if( text.empty() ) return std::wstring();
return utf8_to_ws(text.c_str(),text.size());
}
std::wstring encodedToWs(NativeString::Encoding encoding, std::string const & strEncoded)
{
switch(encoding) {
case NativeString::utf16:
return std::wstring(reinterpret_cast<wchar_t const *>(strEncoded.c_str()));
case NativeString::utf8:
return utf8_to_ws(strEncoded);
default:
std::cerr << "unsupported encoding" << std::endl;
return std::wstring();
}
}
NativeString::NativeString():
wstr()
{}
NativeString::~NativeString()
{
using std::wstring;
wstr.~wstring();
}
NativeString::NativeString(NativeString const & other):
wstr(other.wstr)
{}
NativeString & NativeString::operator=(NativeString const & other)
{
wstr = other.wstr;
return *this;
}
NativeString::NativeString(std::string const & strUTF8):
wstr(utf8_to_ws(strUTF8))
{}
NativeString::NativeString(char const * strUTF8):
wstr(utf8_to_ws(strUTF8))
{}
NativeString::NativeString(char const * strUTF8, size_t size):
wstr(utf8_to_ws(strUTF8,size))
{}
NativeString::NativeString(NativeString::Encoding encoding, std::string const & strEncoded):
wstr(encodedToWs(encoding,strEncoded))
{}
std::string NativeString::toUTF8() const
{
int total = WideCharToMultiByte(CP_UTF8,0,wstr.c_str(),wstr.size(),0,0,0,0);
std::string converted(total,'\0');
WideCharToMultiByte(CP_UTF8,0,wstr.c_str(),wstr.size(),&converted[0],total,0,0);
return converted;
}
NativeString::NativeString(std::wstring const & strUTF16):
wstr(strUTF16)
{}
NativeString::NativeString(wchar_t const * strUTF16):
wstr(strUTF16)
{}
std::wstring NativeString::toUTF16() const
{
return wstr;
}
template<typename T>
T lexical_cast(std::wstring const & wstr)
{
T result = T();
std::basic_istringstream<wchar_t> iss(wstr);
iss >> result;
return result;
}
int NativeString::toInt() const
{
return lexical_cast<int>(wstr);
}
float NativeString::toFloat() const
{
return lexical_cast<float>(wstr);
}
double NativeString::toDouble() const
{
return lexical_cast<double>(wstr);
}
template<typename T>
NativeString toStringT(T value)
{
std::basic_ostringstream<wchar_t> oss;
oss << value;
return NativeString(oss.str());
}
NativeString NativeString::toString(int value)
{
return toStringT(value);
}
NativeString NativeString::toString(float value)
{
return toStringT(value);
}
NativeString NativeString::toString(double value)
{
return toStringT(value);
}
bool NativeString::empty() const
{
return wstr.empty();
}
NativeString & NativeString::operator+=(NativeString const & other)
{
wstr += other.wstr;
return *this;
}
bool NativeString::operator==(NativeString const & other) const
{
return wstr == other.wstr;
}
bool NativeString::operator!=(NativeString const & other) const
{
return wstr != other.wstr;
}
bool operator<(NativeString const & a, NativeString const & b)
{
return a.wstr < b.wstr;
}
}