File: expr.ftsh

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a=10
b=21
c=171

#
# string comparison
#

if foo .eq. foo
	echo "ok"
else
	failure
end

if foo .ne. baz
	echo "ok"
else
	failure
end

#
# integer comparison
#

if $a .eql. 10
	echo "ok"
else
	failure
end

try
	if $a .eql. crap
		echo "shouldn't return true"
	else
		echo "shouldn't return false"
	end
catch
	echo "not a number"
end

#
#
# add sub mul div to eq
#

for x in (0 .sub. $a) .to. $a
	y=$x .mul. $b .add. $c
	z=( $y .sub. $c ) .div. $b
	if $x .eq. $z
		echo $x $y $z ok
	else
		failure
	end
end

#
# mod lt eq to
#

for x in 1 .to. 19
	y=$x .mod. 10
	if $x .lt. 10
		if $y .eq. $x
			echo $x $y ok
		else
			failure
		end
	else
		if $y .eq. ( $x .sub. 10 )
			echo $x $y ok
		else
			failure
		end
	end
end

# gt lt and not

for x in -10 .to. 10
	y=$x .add. 1
	z=$x .sub. 1
	if ( $y .gt. $x ) .and. ( $z .lt. $x )
		echo $x $y $z ok
	else
		failure
	end
	if .not. (( $y .gt. $x ) .and. ( $z .lt. $x ))
		failure
	else
		echo not $x $y $x ok
	end
end

for a in true false
	for b in true false
		x=($a .and. $b)
		y=($a .or. $b)
		z=(.not. $a)
		w=(.not. $b)

		echo "$a and $b = $x"
		echo "$a or $b = $y"
		echo "not $a = $z"
		echo "not $b = $w"
	end
end

function testall
	if .exists. $1
		echo "$1 exists"
	end
	if .isr. $1
		echo "$1 readable"
	end
	if .isw. $1
		echo "$1 writeable"
	end
	if .isx. $1
		echo "$1 executable"
	end

	if .islink. $1
		echo "$1 is a link"
	else if .isdir. $1
		echo "$1 is a dir"
	else if .issock. $1
		echo "$1 is a socket"
	else if .ispipe. $1
		echo "$1 is a pipe"
	else if .isfile. $1
		echo "$1 is a file"
	else if .isblock. $1
		echo "$1 is a block device"
	else if .ischar. $1
		echo "$1 is a char device"
	else
		echo "$1 is unknown type"
	end
end

rm -rf a
testall a
touch a

chmod 000 a
testall a

chmod 400 a
testall a

chmod 200 a
testall a

chmod 100 a
testall a

rm -rf g
mkdir g
chmod 700 g
testall g

rm -rf h
touch h
chmod 700 h
testall h

rm -rf i
ln -s h i
testall i

#
# Skip fifos because they can't be tested everywhere.
#

#rm -rf /tmp/k
#mkfifo /tmp/k
#testall /tmp/k