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#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 const CharType* c_str() const { return cstr; }
private:
const CharType* cstr;
};
namespace details
{
inline bool vcpkg_strcmp(const char* l, const char* r) { return strcmp(l, r) == 0; }
inline bool vcpkg_strcmp(const wchar_t* l, const wchar_t* r) { return wcscmp(l, r) == 0; }
}
template<class CharType>
bool operator==(const BasicCStringView<CharType>& l, const BasicCStringView<CharType>& r)
{
return details::vcpkg_strcmp(l.c_str(), r.c_str());
}
template<class CharType>
bool operator==(const CharType* l, const BasicCStringView<CharType>& r)
{
return details::vcpkg_strcmp(l, r.c_str());
}
template<class CharType>
bool operator==(const BasicCStringView<CharType>& r, const CharType* l)
{
return details::vcpkg_strcmp(l, r.c_str());
}
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();
}
// notequals
template<class CharType>
bool operator!=(const BasicCStringView<CharType>& l, const BasicCStringView<CharType>& r)
{
return !details::vcpkg_strcmp(l.c_str(), r.c_str());
}
template<class CharType>
bool operator!=(const CharType* l, const BasicCStringView<CharType>& r)
{
return !details::vcpkg_strcmp(l, r.c_str());
}
template<class CharType>
bool operator!=(const BasicCStringView<CharType>& r, const CharType* l)
{
return !details::vcpkg_strcmp(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*");
}
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