add timestamp check script

git-svn-id: svn://svn.openwrt.org/openwrt/branches/buildroot-ng/openwrt@3677 3c298f89-4303-0410-b956-a3cf2f4a3e73

scripts/timestamp.pl

@@ -0,0 +1,40 @@
+#!/usr/bin/perl
+use strict;
+
+sub get_ts($) {
+	my $path = shift;
+	my $ts = 0;
+	open FIND, "find $path -not -path \\*.svn\\* -and -not -path \\*CVS\\* |";
+	while (<FIND>) {
+		open FILE, "<$_";
+		my @stat = stat FILE;
+		close FILE;
+		$ts = $stat[9] if ($stat[9] > $ts);
+	}
+	close FIND;
+	return $ts;
+}
+
+(@ARGV > 0) or push @ARGV, ".";
+my $ts = 0;
+my $n = ".";
+my %options;
+foreach my $path (@ARGV) {
+	if ($path =~ /^-/) {
+		$options{$path} = 1;
+	} else {
+		my $tmp = get_ts($path);
+		if ($tmp > $ts) {
+			$n = $path;
+			$ts = $tmp;
+		}
+	}
+}
+
+if ($options{"-p"}) {
+	print "$n\n";
+} elsif ($options{"-t"}) {
+	print "$ts\n";
+} else {
+	print "$n\t$ts\n";
+}