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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef _UNSIGNED_STRING_H
#define _UNSIGNED_STRING_H
#include <string>
typedef unsigned char char8_t;
namespace std {
class u8string : public string {
public:
// copy ctors
//using string::string; // gcc4.8 and newer
explicit u8string(const std::string& s) : string(s) {}
u8string(const char* c) : string(c) {}
//! this is an important difference, we return an unsigned value here!
//! std::string returns a _signed_ one and breaks this way:
//! std::string("\0xFF")[0] == 0xFF // FAILS!!!
//! std::u8string("\0xFF")[0] == 0xFF // WORKS!!!
//! PS: this is very important with our Color...Indicator cause those
//! are defined as unsigned to be compatible with char32_t!
const char8_t& operator[] (const int t) const {
auto& str = *static_cast<const std::string*>(this);
return *reinterpret_cast<const char8_t*>(&str[t]);
}
};
// alternative solution
// We would need to overload all ctors & funcs with "char*" argument then.
// too complicated -> the above is less code
//using u8string = basic_string<char8_t>;
}
static inline const std::u8string& toustring(const std::string& str)
{
return *static_cast<const std::u8string*>(&str);
}
static inline std::u8string& toustring(std::string& str)
{
return *static_cast<std::u8string*>(&str);
}
#endif
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