Utf8.h

// Copyright eeGeo Ltd (2012-2014), All Rights Reserved

#pragma once

#include "Types.h"
#include <string>

namespace Eegeo
{
    namespace Unicode
    {
        namespace Utf8
        {
            size_t Strnlen(const char *s, size_t size);
            
            u32 Next(std::string::const_iterator& iter, std::string::const_iterator iterEnd);
            
            u32 Next(const char*& iter, const char* iterEnd);
            
            inline u32 PeekNext(std::string::const_iterator iter, std::string::const_iterator iterEnd)
            {
                return Next(iter, iterEnd);
            }
            
            inline u32 PeekNext(const char* iter, const char* iterEnd)
            {
                return Next(iter, iterEnd);
            }
            
            size_t GetCodepointCount(std::string::const_iterator iter, std::string::const_iterator iterEnd);
            
            size_t GetCodepointCount(const char* iter, const char* iterEnd);
            
            template <typename TUtf32Iterator>
            inline TUtf32Iterator ToUtf32(std::string::const_iterator inputIter, std::string::const_iterator inputIterEnd, TUtf32Iterator outputIter)
            {
                while (inputIter < inputIterEnd)
                {
                    (*outputIter++) = Next(inputIter, inputIterEnd);
                }
                return outputIter;
            }
            
            template <typename TUtf32Iterator>
            inline TUtf32Iterator ToUtf32(const char* inputIter, const char* inputIterEnd, TUtf32Iterator outputIter)
            {
                while (inputIter < inputIterEnd)
                {
                    (*outputIter++) = Next(inputIter, inputIterEnd);
                }
                return outputIter;
            }
        };
    }
}