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NativeString.cpp
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175 lines (141 loc) · 3.39 KB
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#include "../NativeString.h"
#include <iostream>
#include <sstream>
#include <cwchar>
#include <iterator>
#include <cstdint>
#include "utf8.h"
namespace die {
NativeString::Encoding const NativeString::nativeEncoding = NativeString::utf8;
template<typename IT>
std::wstring utf8toUtf16(IT beg, IT end)
{
std::wstring result;
utf8::utf8to16(beg,end,std::back_inserter(result));
return result;
}
template<typename IT>
std::string utf16toUtf8(IT beg, IT end)
{
std::string result;
utf8::utf16to8(beg,end,std::back_inserter(result));
return result;
}
std::string encodeToUTF8(NativeString::Encoding encoding, std::string const & strEncoded)
{
if( strEncoded.empty() ) return std::string();
switch(encoding) {
case NativeString::utf16:
return utf16toUtf8(
reinterpret_cast<std::uint16_t const *>(&strEncoded[0]),
reinterpret_cast<std::uint16_t const *>(&strEncoded[strEncoded.size()]));
case NativeString::utf8:
return strEncoded;
default:
std::cerr << "unsupported encoding" << std::endl;
return std::string();
}
}
NativeString::NativeString():
str()
{}
NativeString::~NativeString()
{
using std::string;
str.~string();
}
NativeString::NativeString(NativeString const & other):
str(other.str)
{}
NativeString & NativeString::operator=(NativeString const & other)
{
str = other.str;
return *this;
}
NativeString::NativeString(std::string const & strUTF8):
str(strUTF8)
{}
NativeString::NativeString(char const * strUTF8):
str(strUTF8)
{}
NativeString::NativeString(char const * strUTF8, size_t size):
str(strUTF8,size)
{}
NativeString::NativeString(NativeString::Encoding encoding, std::string const & strEncoded):
str(encodeToUTF8(encoding,strEncoded))
{}
std::string NativeString::toUTF8() const
{
return str;
}
NativeString::NativeString(std::wstring const & strUTF16):
str(utf16toUtf8(strUTF16.begin(),strUTF16.end()))
{}
NativeString::NativeString(wchar_t const * strUTF16):
str(utf16toUtf8(strUTF16,strUTF16 + std::wcslen(strUTF16)))
{}
std::wstring NativeString::toUTF16() const
{
return utf8toUtf16(str.begin(),str.end());
}
template<typename T>
T lexical_cast(std::string const & str)
{
T result = T();
std::basic_istringstream<char> iss(str);
iss >> result;
return result;
}
int NativeString::toInt() const
{
return lexical_cast<int>(str);
}
float NativeString::toFloat() const
{
return lexical_cast<float>(str);
}
double NativeString::toDouble() const
{
return lexical_cast<double>(str);
}
template<typename T>
NativeString toStringT(T value)
{
std::basic_ostringstream<char> 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 str.empty();
}
NativeString & NativeString::operator+=(NativeString const & other)
{
str += other.str;
return *this;
}
bool NativeString::operator==(NativeString const & other) const
{
return str == other.str;
}
bool NativeString::operator!=(NativeString const & other) const
{
return str != other.str;
}
bool operator<(NativeString const & a, NativeString const & b)
{
return a.str < b.str;
}
}