Last change
on this file since 417 was 398, checked in by coas-nagasima, 5 years ago |
mbedTLS版Azure IoT Hub接続サンプルのソースコードを追加
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File size:
953 bytes
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[398] | 1 | #include <stdlib.h>
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| 2 | #include <wchar.h>
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| 3 | #include <errno.h>
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| 4 | #include "internal.h"
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| 5 |
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| 6 | size_t mbrtowc(wchar_t *restrict wc, const char *restrict src, size_t n, mbstate_t *restrict st)
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| 7 | {
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| 8 | static unsigned internal_state;
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| 9 | unsigned c;
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| 10 | const unsigned char *s = (const void *)src;
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| 11 | const unsigned N = n;
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| 12 | wchar_t dummy;
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| 13 |
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| 14 | if (!st) st = (void *)&internal_state;
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| 15 | c = *(unsigned *)st;
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| 16 |
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| 17 | if (!s) {
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| 18 | if (c) goto ilseq;
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| 19 | return 0;
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| 20 | } else if (!wc) wc = &dummy;
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| 21 |
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| 22 | if (!n) return -2;
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| 23 | if (!c) {
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| 24 | if (*s < 0x80) return !!(*wc = *s);
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| 25 | if (MB_CUR_MAX==1) return (*wc = CODEUNIT(*s)), 1;
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| 26 | if (*s-SA > SB-SA) goto ilseq;
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| 27 | c = bittab[*s++-SA]; n--;
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| 28 | }
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| 29 |
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| 30 | if (n) {
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| 31 | if (OOB(c,*s)) goto ilseq;
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| 32 | loop:
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| 33 | c = c<<6 | *s++-0x80; n--;
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| 34 | if (!(c&(1U<<31))) {
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| 35 | *(unsigned *)st = 0;
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| 36 | *wc = c;
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| 37 | return N-n;
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| 38 | }
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| 39 | if (n) {
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| 40 | if (*s-0x80u >= 0x40) goto ilseq;
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| 41 | goto loop;
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| 42 | }
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| 43 | }
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| 44 |
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| 45 | *(unsigned *)st = c;
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| 46 | return -2;
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| 47 | ilseq:
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| 48 | *(unsigned *)st = 0;
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| 49 | errno = EILSEQ;
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| 50 | return -1;
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| 51 | }
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