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37 lines
531 B
C
37 lines
531 B
C
#include "runtime/util/utf.h"
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ssize_t
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utf16_to_utf32(uint32_t *out,
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const uint16_t *in,
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size_t len)
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{
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ssize_t rc = 0;
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ssize_t units;
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uint32_t code;
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do
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{
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units = decode_utf16(&code, in);
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if(units == -1)
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return -1;
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if(code > 0)
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{
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in += units;
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if(out != NULL)
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{
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if(rc < len)
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*out++ = code;
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}
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if(SSIZE_MAX - 1 >= rc)
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++rc;
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else
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return -1;
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}
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} while(code > 0);
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return rc;
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}
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