#Convert utf 16 codepoints to utf 8 c code
The following diagram illustrates the relationship between the BMP and the surrogate code points.
In fact, Unicode code points are encoded in UTF-16 using just one or two 16-bit code units. Note that for input strings in UTF-8, the UTF-8 sequence must be valid according to the. However, while UTF-8 encodes each valid Unicode code point using one to four 8-bit byte units, UTF-16 is, in a way, simpler. If the sequence is valid, it is converted to a Unicode codepoint. #include #include #include #include #include #include // utility wrapper to adapt locale-bound facets for wstring/wbuffer convert template struct deletable_facet : Facetĭeletable_facet (Args &. The steps to decode UTF-16 into a codepoint: If the char16 is a high surrogate then: Remove 0xD800 from the value. The translation of two 16-bit values to a single 21-bit value is facilitated by a special range called the surrogate code points, from U+D800 to U+DFFF (decimal 55,296 to 57,343), inclusive. Just like UTF-8, UTF-16 can encode all possible Unicode code points.
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