Function convert_buffer

src/include/pugixml.cpp:1294–1333

	}

	PUGI__FN bool convert_buffer(char_t*& out_buffer, size_t& out_length, xml_encoding encoding, const void* contents, size_t size, bool is_mutable)
	{
		// get native encoding
		xml_encoding wchar_encoding = get_wchar_encoding();

		// fast path: no conversion required
		if (encoding == wchar_encoding) return get_mutable_buffer(out_buffer, out_length, contents, size, is_mutable);

		// only endian-swapping is required
		if (need_endian_swap_utf(encoding, wchar_encoding)) return convert_buffer_endian_swap(out_buffer, out_length, contents, size, is_mutable);

		// source encoding is utf8
		if (encoding == encoding_utf8) return convert_buffer_utf8(out_buffer, out_length, contents, size);

		// source encoding is utf16
		if (encoding == encoding_utf16_be || encoding == encoding_utf16_le)
		{
			xml_encoding native_encoding = is_little_endian() ? encoding_utf16_le : encoding_utf16_be;

			return (native_encoding == encoding) ?
				convert_buffer_utf16(out_buffer, out_length, contents, size, opt_false()) :
				convert_buffer_utf16(out_buffer, out_length, contents, size, opt_true());
		}

		// source encoding is utf32
		if (encoding == encoding_utf32_be || encoding == encoding_utf32_le)
		{
			xml_encoding native_encoding = is_little_endian() ? encoding_utf32_le : encoding_utf32_be;

			return (native_encoding == encoding) ?
				convert_buffer_utf32(out_buffer, out_length, contents, size, opt_false()) :
				convert_buffer_utf32(out_buffer, out_length, contents, size, opt_true());
		}

		// source encoding is latin1
		if (encoding == encoding_latin1) return convert_buffer_latin1(out_buffer, out_length, contents, size);

		assert(!"Invalid encoding");
		return false;
	}
#else
	template <typename opt_swap> PUGI__FN bool convert_buffer_utf16(char_t*& out_buffer, size_t& out_length, const void* contents, size_t size, opt_swap)
	{