shithub: p9-stm32-example-os

ref: f801657f77f3923ec2388c25bdcb036c8019ba89
dir: /libkern/utfecpy.c/

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#include	<u.h>
#include	"kern.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;
		while(end>to && (*--end&0xC0)==0x80)
			;
		*end = '\0';
	}else{
		end--;
	}
	return end;
}