#!/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.clv: check command-line variables

rm -f core

# stdin only, no cmdline asgn
echo 'hello
goodbye' | $AWK '
BEGIN { x=0; print x; getline; print x, $0 }
' > $TEMP1
echo '0
0 hello' > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.clv (stdin only)'

# cmdline asgn then stdin
echo 'hello
goodbye' | $AWK '
BEGIN { x=0; print x; getline; print x, $0 }
' x=1 > $TEMP1
echo '0
1 hello' > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.clv (x=1 only)'

# several cmdline asgn, then stdin
echo 'hello
goodbye' | $AWK '
BEGIN { x=0; print x; getline; print x, $0 }
' x=1 x=2 x=3 > $TEMP1
echo '0
3 hello' > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.clv (x=3 only)'

# several cmdline asgn, then file
echo 'hello
goodbye' > $TEMP0
$AWK '
BEGIN { x=0; print x; getline; print x, $0 }
' x=1 x=2 x=3 $TEMP0 > $TEMP1
echo '0
3 hello' > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.clv (x=3 only)'

# cmdline asgn then file
echo 4 > $TEMP1
$AWK 'BEGIN { getline; print x}' x=4 /dev/null > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.clv (x=4 /dev/null)'

#cmdline asgn then file but no read of it
echo 0 > $TEMP1
$AWK 'BEGIN { x=0; getline <"/dev/null"; print x}' x=5 /dev/null > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.clv (x=5 /dev/null)'

#cmdline asgn then file then read
echo 'xxx
yyy
zzz' > $TEMP0
echo '6
end' > $TEMP1
$AWK 'BEGIN { x=0; getline; print x}
      END { print x }' x=6 $TEMP0 x=end > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.clv (x=6 /dev/null)'

#cmdline asgn then file then read
echo '0
end' > $TEMP1
$AWK 'BEGIN { x=0; getline <"/dev/null"; print x}
      END { print x }' x=7 /dev/null x=end > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.clv (x=7 /dev/null)'

#cmdline asgn then file then read; _ in commandname
echo '0
end' > $TEMP1
$AWK 'BEGIN { _=0; getline <"/dev/null"; print _}
      END { print _ }' _=7A /dev/null _=end > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.clv (_=7A /dev/null)'

# illegal varname in commandname
$AWK '{ print }' 99_=$TEMP0 /dev/null > $TEMP0 2> $TEMP2
grep "can't open.*test.temp.0" $TEMP2 >/dev/null 2>&1 || fail 'BAD: T.clv (7B: illegal varname)'

# these test the new -v option:  awk ... -v a=1 -v b=2 'prog' does before BEGIN

echo 123 > $TEMP1
$AWK -v x=123 'BEGIN { print x }' > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.clv (x=11)'

echo 123 > $TEMP1
$AWK -vx=123 'BEGIN { print x }' > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.clv (x=11a)'

echo 123 abc 10.99 > $TEMP1
$AWK -v x=123 -v y=abc -v z1=10.99 'BEGIN { print x, y, z1 }' > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.clv (x=12)'

echo 123 abc 10.99 > $TEMP1
$AWK -vx=123 -vy=abc -vz1=10.99 'BEGIN { print x, y, z1 }' > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.clv (x=12a)'

echo 123 abc 10.99 > $TEMP1
$AWK -v x=123 -v y=abc -v z1=10.99 -- 'BEGIN { print x, y, z1 }' > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.clv (x=12a)'

echo 'BEGIN { print x, y, z1 }' > $TEMP0
echo 123 abc 10.99 > $TEMP1
$AWK -v x=123 -v y=abc -f $TEMP0 -v z1=10.99 > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.clv (x=13)'

echo 'BEGIN { print x, y, z1 }' > $TEMP0
echo 123 abc 10.99 > $TEMP1
$AWK -vx=123 -vy=abc -f $TEMP0 -vz1=10.99 > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.clv (x=13a)'

echo 'BEGIN { print x, y, z1 }' > $TEMP0
echo 123 abc 10.99 > $TEMP1
$AWK -f $TEMP0 -v x=123 -v y=abc -v z1=10.99 > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.clv (x=14)'

echo 'BEGIN { print x, y, z1 }' > $TEMP0
echo 123 abc 10.99 > $TEMP1
$AWK -f $TEMP0 -vx=123 -vy=abc -vz1=10.99 > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.clv (x=14a)'

echo 'BEGIN { print x, y, z1 }
END { print x }' > $TEMP0
echo '123 abc 10.99
4567' > $TEMP1
$AWK -f $TEMP0 -v x=123 -v y=abc -v z1=10.99 /dev/null x=4567 /dev/null > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.clv (x=15)'

echo 'BEGIN { print x, y, z1 }
END { print x }' > $TEMP0
echo '123 abc 10.99
4567' > $TEMP1
$AWK -f $TEMP0 -vx=123 -vy=abc -vz1=10.99 /dev/null x=4567 /dev/null > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.clv (x=15a)'

echo 'BEGIN { print x, y, z1 }
NR==1 { print x }' > $TEMP0
echo '123 abc 10.99
4567' > $TEMP1
$AWK -v x=123 -v y=abc -v z1=10.99 -f $TEMP0 x=4567 /etc/passwd > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.clv (x=16)'

echo 'BEGIN { print x, y, z1 }
NR==1 { print x }' > $TEMP0
echo '123 abc 10.99
4567' > $TEMP1
$AWK -vx=123 -vy=abc -vz1=10.99 -f $TEMP0 x=4567 /etc/passwd > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.clv (x=16a)'



# special chars in commandline assigned value;
# have to use local echo to avoid quoting problems.

cat <<< 'a\\b\z' > $TEMP1
echo 'hello' | $AWK '{print x}' x='\141\\\\\142\\z' > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.clv (x=17)'

echo "a
z" > $TEMP1
echo 'hello' | $AWK '{print x}' x='a\nz' > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.clv (x=18)'

# a bit circular here...
$AWK 'BEGIN { printf("a%c%c%cz\n", "\b", "\r", "\f") }' > $TEMP1
echo 'hello' | $AWK '{print x}' x='a\b\r\fz' > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.clv (x=19)'

echo '\' > $TEMP1
$AWK -v 'x=\' 'BEGIN { print x; }' > $TEMP2
diff $TEMP1 $TEMP2 || fail 'BAD: T.clv (x=\)'

### newer -v tests


$AWK -vx 'BEGIN {print x}' > $TEMP1 2>&1
grep 'invalid -v option argument: x' $TEMP1 >/dev/null || fail 'BAD: T.clv (x=20)'

$AWK -v x 'BEGIN {print x}' > $TEMP1 2>&1
grep 'invalid -v option argument: x' $TEMP1 >/dev/null || fail 'BAD: T.clv (x=20a)'


exit $RESULT