mirror of
https://github.com/microsoft/vcpkg.git
synced 2024-12-16 05:19:01 +08:00
55 lines
1.8 KiB
C++
55 lines
1.8 KiB
C++
#pragma once
|
|
#include <string>
|
|
|
|
namespace vcpkg
|
|
{
|
|
template<class CharType>
|
|
struct BasicCStringView
|
|
{
|
|
constexpr BasicCStringView() : cstr(nullptr) {}
|
|
constexpr BasicCStringView(const CharType* cstr) : cstr(cstr) {}
|
|
constexpr BasicCStringView(const BasicCStringView&) = default;
|
|
BasicCStringView(const std::basic_string<CharType>& str) : cstr(str.c_str()) {}
|
|
|
|
constexpr operator const CharType*() const { return cstr; }
|
|
constexpr const CharType* c_str() const { return cstr; }
|
|
|
|
private:
|
|
const CharType* cstr;
|
|
};
|
|
|
|
template<class CharType>
|
|
bool operator==(const std::basic_string<CharType>& l, const BasicCStringView<CharType>& r)
|
|
{
|
|
return l == r.c_str();
|
|
}
|
|
|
|
template<class CharType>
|
|
bool operator==(const BasicCStringView<CharType>& r, const std::basic_string<CharType>& l)
|
|
{
|
|
return l == r.c_str();
|
|
}
|
|
|
|
template<class CharType>
|
|
bool operator!=(const BasicCStringView<CharType>& r, const std::basic_string<CharType>& l)
|
|
{
|
|
return l != r.c_str();
|
|
}
|
|
|
|
template<class CharType>
|
|
bool operator!=(const std::basic_string<CharType>& l, const BasicCStringView<CharType>& r)
|
|
{
|
|
return l != r.c_str();
|
|
}
|
|
|
|
using CStringView = BasicCStringView<char>;
|
|
using CWStringView = BasicCStringView<wchar_t>;
|
|
|
|
inline const char* to_printf_arg(const CStringView string_view) { return string_view.c_str(); }
|
|
|
|
inline const wchar_t* to_wprintf_arg(const CWStringView string_view) { return string_view.c_str(); }
|
|
|
|
static_assert(sizeof(CStringView) == sizeof(void*), "CStringView must be a simple wrapper around char*");
|
|
static_assert(sizeof(CWStringView) == sizeof(void*), "CWStringView must be a simple wrapper around wchar_t*");
|
|
}
|