#!/bin/sh

test_description='blob conversion via gitattributes'

. ./test-lib.sh

cat <<\EOF >rot13.sh
tr '[a-zA-Z]' '[n-za-mN-ZA-M]'
EOF
chmod +x rot13.sh

test_expect_success setup '
	git config filter.rot13.smudge ./rot13.sh &&
	git config filter.rot13.clean ./rot13.sh &&

	{
	    echo "*.t filter=rot13"
	    echo "*.i ident"
	} >.gitattributes &&

	{
	    echo a b c d e f g h i j k l m
	    echo n o p q r s t u v w x y z
	    echo '\''$Id$'\''
	} >test &&
	cat test >test.t &&
	cat test >test.o &&
	cat test >test.i &&
	git add test test.t test.i &&
	rm -f test test.t test.i &&
	git checkout -- test test.t test.i
'

script='s/^\$Id: \([0-9a-f]*\) \$/\1/p'

test_expect_success check '

	cmp test.o test &&
	cmp test.o test.t &&

	# ident should be stripped in the repository
	git diff --raw --exit-code :test :test.i &&
	id=$(git rev-parse --verify :test) &&
	embedded=$(sed -ne "$script" test.i) &&
	test "z$id" = "z$embedded" &&

	git cat-file blob :test.t > test.r &&

	./rot13.sh < test.o > test.t &&
	cmp test.r test.t
'

# If an expanded ident ever gets into the repository, we want to make sure that
# it is collapsed before being expanded again on checkout
test_expect_success expanded_in_repo '
	{
		echo "File with expanded keywords"
		echo "\$Id\$"
		echo "\$Id:\$"
		echo "\$Id: 0000000000000000000000000000000000000000 \$"
		echo "\$Id: NoSpaceAtEnd\$"
		echo "\$Id:NoSpaceAtFront \$"
		echo "\$Id:NoSpaceAtEitherEnd\$"
		echo "\$Id: NoTerminatingSymbol"
	} > expanded-keywords &&

	{
		echo "File with expanded keywords"
		echo "\$Id: 4f21723e7b15065df7de95bd46c8ba6fb1818f4c \$"
		echo "\$Id: 4f21723e7b15065df7de95bd46c8ba6fb1818f4c \$"
		echo "\$Id: 4f21723e7b15065df7de95bd46c8ba6fb1818f4c \$"
		echo "\$Id: 4f21723e7b15065df7de95bd46c8ba6fb1818f4c \$"
		echo "\$Id: 4f21723e7b15065df7de95bd46c8ba6fb1818f4c \$"
		echo "\$Id: 4f21723e7b15065df7de95bd46c8ba6fb1818f4c \$"
		echo "\$Id: NoTerminatingSymbol"
	} > expected-output &&

	git add expanded-keywords &&
	git commit -m "File with keywords expanded" &&

	echo "expanded-keywords ident" >> .gitattributes &&

	rm -f expanded-keywords &&
	git checkout -- expanded-keywords &&
	cat expanded-keywords &&
	cmp expanded-keywords expected-output
'

test_done