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26 lines
408 B
C
26 lines
408 B
C
#include "runtime/util/utf.h"
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ssize_t
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decode_utf16(uint32_t *out,
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const uint16_t *in)
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{
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uint16_t code1, code2;
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code1 = *in++;
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if(code1 >= 0xD800 && code1 < 0xDC00)
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{
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/* surrogate pair */
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code2 = *in++;
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if(code2 >= 0xDC00 && code2 < 0xE000)
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{
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*out = (code1 << 10) + code2 - 0x35FDC00;
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return 2;
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}
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return -1;
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}
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*out = code1;
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return 1;
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}
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