From 11487c5358c414c73bcfd9c850d469fba081f18c Mon Sep 17 00:00:00 2001
From: Roland McGrath <roland@redhat.com>
Date: Thu, 29 Jul 2010 19:24:43 -0700
Subject: Restore README.txt, scripts.

---
 scripts/configdiff.pl | 76 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 76 insertions(+)
 create mode 100644 scripts/configdiff.pl

(limited to 'scripts/configdiff.pl')

diff --git a/scripts/configdiff.pl b/scripts/configdiff.pl
new file mode 100644
index 000000000..848d8df0f
--- /dev/null
+++ b/scripts/configdiff.pl
@@ -0,0 +1,76 @@
+#! /usr/bin/perl
+
+my @args=@ARGV;
+my @configoptions;
+my @configvalues;
+my @alreadyprinted;
+my $configcounter = 0;
+
+# first, read the override file
+
+open (FILE,"$args[0]") || die "Could not open $args[0]";
+while (<FILE>) {
+	my $str = $_;
+	if (/\# ([\w]+) is not set/) {
+		$configoptions[$configcounter] = $1;
+		$configvalues[$configcounter] = $str;
+		$alreadprinted[$configcounter] = 0;
+		$configcounter ++;
+	} else {
+		if (/([\w]+)=/) {
+			$configoptions[$configcounter] = $1;
+			$configvalues[$configcounter] = $str;
+			$alreadprinted[$configcounter] = 0;
+			$configcounter ++;
+		} else {
+			$configoptions[$configcounter] = "$_";
+			$configvalues[$configcounter] = $str;
+			$alreadprinted[$configcounter] = 0;
+			$configcounter ++;
+		}
+	}
+};
+
+# now, read and output the entire configfile, except for the overridden
+# parts... for those the new value is printed.
+# O(N^2) algorithm so if this is slow I need to look at it later
+
+open (FILE2,"$args[1]") || die "Could not open $args[1]";
+while (<FILE2>) {
+	my $nooutput;
+	my $counter;
+	my $configname="$_";
+	my $match;
+
+	if (/\# ([\w]+) is not set/) {
+		$configname = $1;
+	} else {
+		if (/([\w]+)=/) {
+			$configname  = $1;
+		} 
+	}
+
+	$counter = 0;
+	$nooutput = 0;
+	$match = 0;
+#	print "C : $configname";
+	while ($counter < $configcounter) {	
+		if ("$configname" eq "$configoptions[$counter]") {	
+			if ( ("$_" eq "$configvalues[$counter]") || ("$configname" eq "") ) {
+				$match = 1;
+			} else {
+				$alreadyprinted[$configcounter] = 1;
+				print "$_";
+				$match = 1;
+			}
+		}
+		$counter++;
+	}
+	if ($match == 0) {
+		print "$_";
+	}
+
+}
+
+
+1;
-- 
cgit