123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051 |
- /*
- * 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 <stdarg.h>
- #include <string.h>
- #include "utf.h"
- #include "utfdef.h"
- static void*
- memccpy(void *a1, void *a2, int c, ulong n)
- {
- uchar *s1, *s2;
- s1 = a1;
- s2 = a2;
- c &= 0xFF;
- while(n > 0) {
- if((*s1++ = *s2++) == c)
- return s1;
- n--;
- }
- return 0;
- }
- char*
- utfecpy(char *to, char *e, char *from)
- {
- char *end;
- if(to >= e)
- return to;
- end = memccpy(to, from, '\0', e - to);
- if(end == nil){
- end = e-1;
- while(end>to && (*--end&0xC0)==0x80)
- ;
- *end = '\0';
- }else{
- end--;
- }
- return end;
- }
|