--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sbsv1/abld/genutil/ecopyfile.pl	Fri Jun 25 17:29:25 2010 +0800
@@ -0,0 +1,134 @@
+# Copyright (c) 2001-2009 Nokia Corporation and/or its subsidiary(-ies).
+# All rights reserved.
+# This component and the accompanying materials are made available
+# under the terms of "Eclipse Public License v1.0"
+# which accompanies this distribution, and is available
+# at the URL "http://www.eclipse.org/legal/epl-v10.html".
+#
+# Initial Contributors:
+# Nokia Corporation - initial contribution.
+#
+# Contributors:
+#
+# Description:
+#
+
+use File::Copy;
+use File::Basename;
+use File::Path;
+
+
+if (@ARGV!=2)
+	{
+#........1.........2.........3.........4.........5.........6.........7.....
+	print <<USAGE_EOF;
+Usage : perl ecopyfile.pl srcfile dstfile
+
+If dstfile exists and is identical to srcfile then do nothing,
+otherwise copy srcfile to dstfile.
+
+USAGE_EOF
+	exit 1;
+	}
+
+my $srcfile = shift;
+my $dstfile = shift;
+
+# Sanity checking
+#
+
+if (!-e $srcfile)
+	{
+	print STDERR "$srcfile does not exist\n";
+	exit 1;
+	}
+
+if (!-f $srcfile)
+	{
+	print STDERR "$srcfile is not a plain file\n";
+	exit 1;
+	}
+
+my $updating = -e $dstfile;
+
+if ($updating && !-f $dstfile)
+	{
+	print STDERR "$dstfile exists, but is not a plain file\n";
+	exit 1;
+	}
+
+# Can we avoid doing the copy?
+#
+
+if ($updating && !defined($ENV{ECOPYFILE_ALWAYS_COPY}) && (-s $srcfile == -s $dstfile))
+	{
+	# file exists and is the same size - check contents
+
+	open SRC, $srcfile or print STDERR "Cannot open $srcfile\n" and exit 1;
+	open DST, $dstfile or print STDERR "Cannot open $dstfile\n" and exit 1;
+
+	binmode SRC;
+	binmode DST;
+
+	my $srcbuf;
+	my $dstbuf;
+	my $srclen;
+	my $dstlen;
+	my $same = 1;
+
+	while ($same)
+		{
+		$srclen = read SRC, $srcbuf, 4096;
+		$dstlen = read DST, $dstbuf, 4096;
+		if ($srclen == 0 && $dstlen == 0)
+			{
+			last;
+			}
+		$same= $srcbuf eq $dstbuf;
+		}
+
+	close SRC;
+	close DST;
+
+	if ($same)
+		{
+		# Files match - no need to copy
+		exit 0;
+		}
+
+	# files are different
+	}
+
+# Copy srcfile to dstfile
+#
+
+my $action = "create";
+
+if ($updating) {
+	$action = "update";
+}
+else {
+	# see if the destination directory exists to create the file into...
+	my $directory = dirname($dstfile);
+	if (!-e $directory) {
+		# ...and attempt to create it if not.
+		if (!mkpath ($directory)) {
+			print STDERR "Failed to create directory $directory\n";
+			exit 1;
+		}
+	}
+}
+
+
+if (!copy ($srcfile, $dstfile))
+        {
+	print STDERR "Failed to $action file $dstfile\n";
+	unlink $dstfile;
+	exit 1;
+	}
+
+
+printf "%sd %s\n", ucfirst $action, $dstfile;
+exit 0;
+
+