Alexander Gutkin | 439f3d1 | 2014-02-28 11:33:45 +0000 | [diff] [blame] | 1 | /* |
| 2 | * The authors of this software are Rob Pike and Ken Thompson. |
| 3 | * Copyright (c) 2002 by Lucent Technologies. |
| 4 | * Permission to use, copy, modify, and distribute this software for any |
| 5 | * purpose without fee is hereby granted, provided that this entire notice |
| 6 | * is included in all copies of any software which is or includes a copy |
| 7 | * or modification of this software and in all copies of the supporting |
| 8 | * documentation for such software. |
| 9 | * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED |
Alexander Gutkin | 96039b7 | 2014-03-04 17:22:31 +0000 | [diff] [blame] | 10 | * WARRANTY. IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE ANY |
| 11 | * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY |
Alexander Gutkin | 439f3d1 | 2014-02-28 11:33:45 +0000 | [diff] [blame] | 12 | * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE. |
| 13 | */ |
Alexander Gutkin | 439f3d1 | 2014-02-28 11:33:45 +0000 | [diff] [blame] | 14 | #include <stdarg.h> |
| 15 | #include <string.h> |
Alexander Gutkin | 439f3d1 | 2014-02-28 11:33:45 +0000 | [diff] [blame] | 16 | #include "utf.h" |
Alexander Gutkin | 96039b7 | 2014-03-04 17:22:31 +0000 | [diff] [blame] | 17 | #include "utfdef.h" |
Alexander Gutkin | 439f3d1 | 2014-02-28 11:33:45 +0000 | [diff] [blame] | 18 | |
| 19 | char* |
Alexander Gutkin | 96039b7 | 2014-03-04 17:22:31 +0000 | [diff] [blame] | 20 | utfecpy(char *to, char *e, const char *from) |
Alexander Gutkin | 439f3d1 | 2014-02-28 11:33:45 +0000 | [diff] [blame] | 21 | { |
| 22 | char *end; |
| 23 | |
| 24 | if(to >= e) |
| 25 | return to; |
Alexander Gutkin | 96039b7 | 2014-03-04 17:22:31 +0000 | [diff] [blame] | 26 | end = (char*)memccpy(to, from, '\0', e - to); |
Alexander Gutkin | 439f3d1 | 2014-02-28 11:33:45 +0000 | [diff] [blame] | 27 | if(end == nil){ |
| 28 | end = e-1; |
| 29 | while(end>to && (*--end&0xC0)==0x80) |
| 30 | ; |
| 31 | *end = '\0'; |
| 32 | }else{ |
| 33 | end--; |
| 34 | } |
| 35 | return end; |
| 36 | } |