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#pragma once
#include "base.hpp"
namespace cru
{
namespace details
{
constexpr StringView PlaceHolder(type_tag<String>)
{
return StringView(L"{}");
}
constexpr MultiByteStringView PlaceHolder(type_tag<MultiByteString>)
{
return MultiByteStringView("{}");
}
template<typename TString>
void FormatInternal(TString& string)
{
const auto find_result = string.find(PlaceHolder(type_tag<TString>{}));
if (find_result != TString::npos)
throw std::invalid_argument("There is more placeholders than args.");
}
template<typename TString, typename T, typename... TRest>
void FormatInternal(TString& string, const T& arg, const TRest&... args)
{
const auto find_result = string.find(PlaceHolder(type_tag<TString>{}));
if (find_result == TString::npos)
throw std::invalid_argument("There is less placeholders than args.");
string.replace(find_result, 2, FormatToString(arg, type_tag<TString>{}));
FormatInternal<TString>(string, args...);
}
}
template<typename... T>
String Format(const StringView& format, const T&... args)
{
String result(format);
details::FormatInternal<String>(result, args...);
return result;
}
template<typename... T>
MultiByteString Format(const MultiByteStringView& format, const T&... args)
{
MultiByteString result(format);
details::FormatInternal<MultiByteString>(result, args...);
return result;
}
#define CRU_FORMAT_NUMBER(type) \
inline String FormatToString(const type number, type_tag<String>) \
{ \
return std::to_wstring(number); \
} \
inline MultiByteString FormatToString(const type number, type_tag<MultiByteString>) \
{ \
return std::to_string(number); \
}
CRU_FORMAT_NUMBER(int)
CRU_FORMAT_NUMBER(short)
CRU_FORMAT_NUMBER(long)
CRU_FORMAT_NUMBER(long long)
CRU_FORMAT_NUMBER(unsigned int)
CRU_FORMAT_NUMBER(unsigned short)
CRU_FORMAT_NUMBER(unsigned long)
CRU_FORMAT_NUMBER(unsigned long long)
CRU_FORMAT_NUMBER(float)
CRU_FORMAT_NUMBER(double)
#undef CRU_FORMAT_NUMBER
inline StringView FormatToString(const String& string, type_tag<String>)
{
return string;
}
inline MultiByteString FormatToString(const MultiByteString& string, type_tag<MultiByteString>)
{
return string;
}
inline StringView FormatToString(const StringView& string, type_tag<String>)
{
return string;
}
inline MultiByteStringView FormatToString(const MultiByteStringView& string, type_tag<MultiByteString>)
{
return string;
}
inline StringView FormatToString(const wchar_t* string, type_tag<String>)
{
return StringView(string);
}
inline MultiByteStringView FormatToString(const char* string, type_tag<MultiByteString>)
{
return MultiByteString(string);
}
}
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