utf16_decoder< opt_swap > Struct Template Reference

Public Types
typedef uint16_t	type

Static Public Member Functions
template<typename Traits>
static Traits::value_type	process (const uint16_t *data, size_t size, typename Traits::value_type result, Traits)

Detailed Description

template<typename opt_swap>
struct utf16_decoder< opt_swap >

Definition at line 1703 of file pugixml.cc.

Member Typedef Documentation

type

template<typename opt_swap>

typedef uint16_t utf16_decoder< opt_swap >::type

Definition at line 1705 of file pugixml.cc.

Member Function Documentation

process()

template<typename opt_swap>

template<typename Traits>

Traits::value_type utf16_decoder< opt_swap >::process ( const uint16_t * data, size_t size, typename Traits::value_type result, Traits  )

inlinestatic

Definition at line 1707 of file pugixml.cc.

        {
            while (size)
            {
                uint16_t lead = opt_swap::value ? endian_swap(*data) : *data;
 
                // U+0000..U+D7FF
                if (lead < 0xD800)
                {
                    result = Traits::low(result, lead);
                    data += 1;
                    size -= 1;
                }
                // U+E000..U+FFFF
                else if (static_cast<unsigned int>(lead - 0xE000) < 0x2000)
                {
                    result = Traits::low(result, lead);
                    data += 1;
                    size -= 1;
                }
                // surrogate pair lead
                else if (static_cast<unsigned int>(lead - 0xD800) < 0x400 && size >= 2)
                {
                    uint16_t next = opt_swap::value ? endian_swap(data[1]) : data[1];
 
                    if (static_cast<unsigned int>(next - 0xDC00) < 0x400)
                    {
                        result = Traits::high(result, 0x10000 + ((lead & 0x3ff) << 10) + (next & 0x3ff));
                        data += 2;
                        size -= 2;
                    }
                    else
                    {
                        data += 1;
                        size -= 1;
                    }
                }
                else
                {
                    data += 1;
                    size -= 1;
                }
            }
 
            return result;
        }

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The documentation for this struct was generated from the following file:

• pugixml.cc