12 lines
540 B
C++
12 lines
540 B
C++
template<typename ... Args>
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std::string string_format( const std::string& format, Args ... args )
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{
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int size_s = std::snprintf( nullptr, 0, format.c_str(), args ... ) + 1; // Extra space for '\0'
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if( size_s <= 0 ){ throw std::runtime_error( "Error during formatting." ); }
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auto size = static_cast<size_t>( size_s );
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std::unique_ptr<char[]> buf( new char[ size ] );
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std::snprintf( buf.get(), size, format.c_str(), args ... );
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return std::string( buf.get(), buf.get() + size - 1 ); // We don't want the '\0' inside
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}
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