#!/usr/bin/perl

# wspatch2patch.pl - converts Eclipse workspace patches to patches 
#                    compatible with the commandline patch utility.
# Copyright (C) 2006 Red Hat Incorporated
# 
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.


	if (@ARGV != 1) {
		print STDERR "Converts an Eclipse \"workspace patch\" to a patch that can be used in rpm builds.\n"; 
		print STDERR "\tUsage: $0 path/to/eclipse/workspacepatch.patch\n"; 
		exit 1;
	}

	open( WSPATCH, "< $ARGV[0]" ) or die "Can't open $ARGV[0] : $!";

	$plugin='';
    	
	while( <WSPATCH> ) {
		if ($_ =~ m/^### Eclipse Workspace Patch 1.0/) {
			next;
		} elsif ($_ =~ m/^#P */) {
			$plugin = $_;
			$plugin =~ s/^#P //;	
			chomp($plugin);
			next;
		} elsif ($_ =~ m/^--- */) {
			$_ =~ s/^--- /--- plugins\/$plugin\//;
		} elsif ($_ =~ m/^\+\+\+ */) {
			$_ =~ s/^\+\+\+ /\+\+\+ plugins\/$plugin\//;
		}
		print STDOUT $_;
    	}

    	close WSPATCH;