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b360ea6ac1
This parallels encode_utf8 which we already had. Decoding is more fraught with perils than encoding, so I've also included a small test program.
21 lines
499 B
C
21 lines
499 B
C
/*
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* Decode a single UTF-8 character to the platform's local wchar_t.
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*/
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#include "putty.h"
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#include "misc.h"
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size_t decode_utf8_to_wchar(const char **utf8, wchar_t *out)
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{
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size_t outlen = 0;
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unsigned wc = decode_utf8(utf8);
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if (sizeof(wchar_t) > 2 || wc < 0x10000) {
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out[outlen++] = wc;
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} else {
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unsigned wcoff = wc - 0x10000;
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out[outlen++] = 0xD800 | (0x3FF & (wcoff >> 10));
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out[outlen++] = 0xDC00 | (0x3FF & wcoff);
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}
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return outlen;
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}
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