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| 1 /* | 1 /* | 
| 2  * This code was written by Rich Felker in 2010; no copyright is claimed. | 2  * This code was written by Rich Felker in 2010; no copyright is claimed. | 
| 3  * This code is in the public domain. Attribution is appreciated but | 3  * This code is in the public domain. Attribution is appreciated but | 
| 4  * unnecessary. | 4  * unnecessary. | 
| 5  */ | 5  */ | 
| 6 | 6 | 
| 7 #include <stdlib.h> | 7 #include <stdlib.h> | 
| 8 #include <wchar.h> | 8 #include <wchar.h> | 
| 9 #include <errno.h> | 9 #include <errno.h> | 
| 10 #include "internal.h" | 10 #include "internal.h" | 
| 11 | 11 | 
| 12 size_t wcrtomb(char *restrict s, wchar_t wc, mbstate_t *restrict st) | 12 size_t wcrtomb(char* restrict s, wchar_t wc, mbstate_t* restrict st) { | 
| 13 { | 13   if (!s) | 
| 14 »       if (!s) return 1; | 14     return 1; | 
| 15 »       if ((unsigned)wc < 0x80) { | 15   if ((unsigned)wc < 0x80) { | 
| 16 »       »       *s = wc; | 16     *s = wc; | 
| 17 »       »       return 1; | 17     return 1; | 
| 18 »       } else if (MB_CUR_MAX == 1) { | 18   } else if (MB_CUR_MAX == 1) { | 
| 19 »       »       if (!IS_CODEUNIT(wc)) { | 19     if (!IS_CODEUNIT(wc)) { | 
| 20 »       »       »       errno = EILSEQ; | 20       errno = EILSEQ; | 
| 21 »       »       »       return -1; | 21       return -1; | 
| 22 »       »       } | 22     } | 
| 23 »       »       *s = wc; | 23     *s = wc; | 
| 24 »       »       return 1; | 24     return 1; | 
| 25 »       } else if ((unsigned)wc < 0x800) { | 25   } else if ((unsigned)wc < 0x800) { | 
| 26 »       »       *s++ = 0xc0 | (wc>>6); | 26     *s++ = 0xc0 | (wc >> 6); | 
| 27 »       »       *s = 0x80 | (wc&0x3f); | 27     *s = 0x80 | (wc & 0x3f); | 
| 28 »       »       return 2; | 28     return 2; | 
| 29 »       } else if ((unsigned)wc < 0xd800 || (unsigned)wc-0xe000 < 0x2000) { | 29   } else if ((unsigned)wc < 0xd800 || (unsigned)wc - 0xe000 < 0x2000) { | 
| 30 »       »       *s++ = 0xe0 | (wc>>12); | 30     *s++ = 0xe0 | (wc >> 12); | 
| 31 »       »       *s++ = 0x80 | ((wc>>6)&0x3f); | 31     *s++ = 0x80 | ((wc >> 6) & 0x3f); | 
| 32 »       »       *s = 0x80 | (wc&0x3f); | 32     *s = 0x80 | (wc & 0x3f); | 
| 33 »       »       return 3; | 33     return 3; | 
| 34 »       } else if ((unsigned)wc-0x10000 < 0x100000) { | 34   } else if ((unsigned)wc - 0x10000 < 0x100000) { | 
| 35 »       »       *s++ = 0xf0 | (wc>>18); | 35     *s++ = 0xf0 | (wc >> 18); | 
| 36 »       »       *s++ = 0x80 | ((wc>>12)&0x3f); | 36     *s++ = 0x80 | ((wc >> 12) & 0x3f); | 
| 37 »       »       *s++ = 0x80 | ((wc>>6)&0x3f); | 37     *s++ = 0x80 | ((wc >> 6) & 0x3f); | 
| 38 »       »       *s = 0x80 | (wc&0x3f); | 38     *s = 0x80 | (wc & 0x3f); | 
| 39 »       »       return 4; | 39     return 4; | 
| 40 »       } | 40   } | 
| 41 »       errno = EILSEQ; | 41   errno = EILSEQ; | 
| 42 »       return -1; | 42   return -1; | 
| 43 } | 43 } | 
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