1 b2cfc4e2 2003-09-30 devnull /*
 2 b2cfc4e2 2003-09-30 devnull  * The authors of this software are Rob Pike and Ken Thompson.
 3 b2cfc4e2 2003-09-30 devnull  *              Copyright (c) 2002 by Lucent Technologies.
 4 b2cfc4e2 2003-09-30 devnull  * Permission to use, copy, modify, and distribute this software for any
 5 b2cfc4e2 2003-09-30 devnull  * purpose without fee is hereby granted, provided that this entire notice
 6 b2cfc4e2 2003-09-30 devnull  * is included in all copies of any software which is or includes a copy
 7 b2cfc4e2 2003-09-30 devnull  * or modification of this software and in all copies of the supporting
 8 b2cfc4e2 2003-09-30 devnull  * documentation for such software.
 9 b2cfc4e2 2003-09-30 devnull  * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
10 b2cfc4e2 2003-09-30 devnull  * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE ANY
11 b2cfc4e2 2003-09-30 devnull  * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
12 b2cfc4e2 2003-09-30 devnull  * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
13 b2cfc4e2 2003-09-30 devnull  */
14 b2cfc4e2 2003-09-30 devnull #include <stdarg.h>
15 b2cfc4e2 2003-09-30 devnull #include <string.h>
16 b2cfc4e2 2003-09-30 devnull #include "utf.h"
17 b2cfc4e2 2003-09-30 devnull #include "utfdef.h"
18 b2cfc4e2 2003-09-30 devnull 
19 b2cfc4e2 2003-09-30 devnull char*
20 b2cfc4e2 2003-09-30 devnull utfecpy(char *to, char *e, char *from)
21 b2cfc4e2 2003-09-30 devnull {
22 b2cfc4e2 2003-09-30 devnull 	char *end;
23 b2cfc4e2 2003-09-30 devnull 
24 b2cfc4e2 2003-09-30 devnull 	if(to >= e)
25 b2cfc4e2 2003-09-30 devnull 		return to;
26 b2cfc4e2 2003-09-30 devnull 	end = memccpy(to, from, '\0', e - to);
27 b2cfc4e2 2003-09-30 devnull 	if(end == nil){
28 b2cfc4e2 2003-09-30 devnull 		end = e-1;
29 b2cfc4e2 2003-09-30 devnull 		while(end>to && (*--end&0xC0)==0x80)
30 b2cfc4e2 2003-09-30 devnull 			;
31 b2cfc4e2 2003-09-30 devnull 		*end = '\0';
32 b2cfc4e2 2003-09-30 devnull 	}else{
33 b2cfc4e2 2003-09-30 devnull 		end--;
34 b2cfc4e2 2003-09-30 devnull 	}
35 b2cfc4e2 2003-09-30 devnull 	return end;
36 b2cfc4e2 2003-09-30 devnull }