#!/bin/csh -f
#
# Compares two source trees
#
# Usage: "difftree src-tree dst-tree",
#
#			 			Gershon Elber, Jan 1996.
#

set reverse = 0
if ("$1" == "-r") then
	shift
	set reverse = 1
endif

if ( $#argv != 2 ) then
	echo "Usage: difftree src-tree dst-tree"
	exit 1
endif

set src = $1
set dest = $2

if ( ! -e $src ) then
	echo "Source directory does not exists"
	exit 1
endif
if ( ! -e $dest ) then
	echo "Destination directory does not exists"
	exit 1
endif

diff -rq $src $dest | awk \
	'BEGIN {	\
	} \
	(($1 == "Files") && ($3 == "and") && ($5 == "differ")) { \
		if ( $reverse ) { \
			printf("echo ===================================\n"); \
			printf("echo cp %s %s\n", $2, $4); \
			printf("echo ===================================\n"); \
			printf("diff %s %s\n", $2, $4); \
		} \
		else { \
			printf("echo ===================================\n"); \
			printf("echo cp %s %s\n", $4, $2); \
			printf("echo ===================================\n"); \
			printf("diff %s %s\n", $4, $2); \
		} \
	} \
	{ \
	}' > /tmp/difftree.tmp.$$

csh /tmp/difftree.tmp.$$

rm /tmp/difftree.tmp.$$