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[thirdparty/openssl.git] / ms / cmp.pl

#!/usr/local/bin/perl

($#ARGV == 1) || die "usage: cmp.pl <file1> <file2>\n";

open(IN0,"<$ARGV[0]") || die "unable to open $ARGV[0]\n";
open(IN1,"<$ARGV[1]") || die "unable to open $ARGV[1]\n";
binmode IN0;
binmode IN1;

$tot=0;
$ret=1;
for (;;)
	{
	$n1=sysread(IN0,$b1,4096);
	$n2=sysread(IN1,$b2,4096);

	last if ($n1 != $n2);
	last if ($b1 ne $b2);
	last if ($n1 < 0);
	if ($n1 == 0)
		{
		$ret=0;
		last;
		}
	$tot+=$n1;
	}

close(IN0);
close(IN1);
if ($ret)
	{
	printf STDERR "$ARGV[0] and $ARGV[1] are different\n";
	@a1=unpack("C*",$b1);
	@a2=unpack("C*",$b2);
	for ($i=0; $i<=$#a1; $i++)
		{
		if ($a1[$i] ne $a2[$i])
			{
			printf "%02X %02X <<\n",$a1[$i],$a2[$i];
			last;
			}
		}
	$nm=$tot+$n1;
	$tot+=$i+1;
	printf STDERR "diff at char $tot of $nm\n";
	}
exit($ret);