| /* |
| * The authors of this software are Rob Pike and Ken Thompson. |
| * Copyright (c) 2002 by Lucent Technologies. |
| * Permission to use, copy, modify, and distribute this software for any |
| * purpose without fee is hereby granted, provided that this entire notice |
| * is included in all copies of any software which is or includes a copy |
| * or modification of this software and in all copies of the supporting |
| * documentation for such software. |
| * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED |
| * WARRANTY. IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE ANY |
| * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY |
| * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE. |
| */ |
| #include <u.h> |
| #include <libc.h> |
| #include "utf.h" |
| #include "utfdef.h" |
| |
| char* |
| utfecpy(char *to, char *e, const char *from) |
| { |
| char *end; |
| |
| if(to >= e) |
| return to; |
| end = memccpy(to, from, '\0', (size_t)(e - to)); |
| if(end == nil){ |
| end = e-1; |
| while(end>to && (*--end&0xC0)==0x80) |
| ; |
| *end = '\0'; |
| }else{ |
| end--; |
| } |
| return end; |
| } |