#!/bin/bash

if [[ -z "$AWK" || -z "$WORKDIR" ]]; then
    printf '$AWK and $WORKDIR must be set\n' >&2
    exit 1
fi

TEMP0=$WORKDIR/test.temp.0
TEMP1=$WORKDIR/test.temp.1
TEMP2=$WORKDIR/test.temp.2

RESULT=0

fail() {
	echo "$1" >&2
	RESULT=1
}

echo T.close: test close built-in

rm -f $TEMP0
$AWK '{ print >>"'$TEMP0'"; close("'$TEMP0'") }' /etc/passwd
diff /etc/passwd $TEMP0 || fail 'BAD: T.close (1)'

ls -l > $TEMP0
tail -1 $TEMP0 > $TEMP1
$AWK '{ print >"'$TEMP2'"; close("'$TEMP2'") }' $TEMP0
diff $TEMP1 $TEMP2 || fail 'BAD: T.close (2)'

echo 0 > $TEMP1
$AWK '	# non-accessible file
  BEGIN { getline <"/etc/passwd"; print close("/etc/passwd"); }
' > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.close (3)'

echo -1 > $TEMP1
$AWK '	# file not opened
  BEGIN { print close("glotch"); }
' > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.close (4)'

echo 0 > $TEMP1
$AWK '	# normal close
  BEGIN { print "hello" > "'$TEMP0'"; print close("'$TEMP0'"); }
' > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.close (5)'

echo 0 > $TEMP1
$AWK '	# normal close
  BEGIN { print "hello" | "cat > '$TEMP0'"; print close("cat > '$TEMP0'"); }
' > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.close (6)'

exit $RESULT