/* * 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" 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;}