echo T.argv: misc tests of argc and argv

awk=${awk-../a.out}

echo >foo1
echo >foo2
$awk '
BEGIN {
	for (i = 1; i < ARGC-1; i++)
		printf "%s ", ARGV[i]
	if (ARGC > 1)
		printf "%s", ARGV[i]
	printf "\n"
	exit
}' * >foo1
echo * >foo2
diff foo1 foo2 || echo 'BAD: T.argv (echo1 *)'

$awk '
BEGIN {
	for (i = 1; i < ARGC; i++) {
		printf "%s", ARGV[i]
		if (i < ARGC-1)
			printf " "
	}
	printf "\n"
	exit
}' * >foo1
echo * >foo2
diff foo1 foo2 || echo 'BAD: T.argv (echo2 *)'

$awk '
BEGIN {
	print ARGC
	ARGV[ARGC-1] = ""
	for (i=0; i < ARGC; i++)
		print ARGV[i]
	exit
}
' a bc def gh >foo1
echo "5
$awk
a
bc
def
" >foo2
diff foo1 foo2 || echo 'BAD: T.argv (argc *)'

echo '1
2
3' >foo0
echo 'foo1
foo2
foo3' >foo1
$awk '{print L $0}' L=foo <foo0 >foo2
diff foo1 foo2 || echo 'BAD: T.argv (L=foo <foo1)'

echo '1
2
3' >foo0
echo 'foo1
foo2
foo3' >foo1
$awk '{print L $0}' L=foo foo0 >foo2
diff foo1 foo2 || echo 'BAD: T.argv (L=foo foo1)'

echo '1
2
3' >foo0
echo 'foo1
foo2
foo3' >foo1
cat foo0 | $awk '{print L $0}' L=foo - >foo2
diff foo1 foo2 || echo 'BAD: T.argv (L=foo -)'

echo '1
2
3' >foo0
echo 'foo1
foo2
foo3
glop1
glop2
glop3' >foo1
$awk '{print L $0}' L=foo foo0 L=glop foo0 >foo2
diff foo1 foo2 || echo 'BAD: T.argv (L=foo L=glop)'

echo '1
2
3' >foo0
echo '111
112
113
221
222
223' >foo1
$awk '{print L $0}' L=11 foo0 L=22 foo0 >foo2
diff foo1 foo2 || echo 'BAD: T.argv (L=11 L=22)'

echo >foo0
echo 'name=value
name=value' >foo1
$awk 'BEGIN { print ARGV[1] } { print ARGV[1] }' name=value foo0 >foo2
diff foo1 foo2 || echo 'BAD: T.argv assignment operand modified'

echo 3.345 >foo1
$awk 'BEGIN { print ARGV[1] + ARGV[2]}' 1 2.345 >foo2
diff foo1 foo2 || echo 'BAD: T.argv (ARGV[1] + ARGV[2])'

echo 3.345 >foo1
x1=1 x2=2.345 $awk 'BEGIN { print ENVIRON["x1"] + ENVIRON["x2"]}' 1 2.345 >foo2
diff foo1 foo2 || echo 'BAD: T.argv (ENVIRON[x1] + ENVIRON[x2])'


echo 'foo1' >foo1
echo 'foo2' >foo2
echo 'foo3' >foo3
$awk 'BEGIN { ARGV[2] = "" }
	{ print }' foo1 foo2 foo3 >foo4
echo 'foo1
foo3' >foo5
diff foo4 foo5 || echo 'BAD: T.argv zap ARGV[2]'

echo hi > foo1 ; mv foo1 foo2
$awk 'BEGIN { ARGV[1] = "foo2" ; print FILENAME }
             { print FILENAME }' foo1 >foo3
echo '
foo2' >foo4
diff foo3 foo4 || echo 'BAD: T.argv startup FILENAME'
	# assumes that startup FILENAME is ""


# test data balanced on pinhead...
echo 'ARGV[3] is /dev/null
ARGV[0] is ../a.out
ARGV[1] is /dev/null' >foo1

$awk 'BEGIN {   # this is a variant of arnolds original example
        ARGV[1] = "/dev/null"
        ARGV[2] = "glotch"  # file open must skipped deleted argv
        ARGV[3] = "/dev/null"
        ARGC = 4
        delete ARGV[2]
}
# note that input is read here
END {
        for (i in ARGV)
                printf("ARGV[%d] is %s\n", i, ARGV[i])
}' >foo2
diff foo1 foo2 || echo 'BAD: T.argv delete ARGV[2]'

# deleting ARGV used to trigger a use-after-free crash when awk
# iterates over it to read files.
echo >foo1
echo >foo2
echo >foo3

$awk 'BEGIN {
	delete ARGV
	ARGV[0] = "awk"
	ARGV[1] = "/dev/null"
	ARGC = 2
} {
	# this should not be executed
	print "FILENAME: " FILENAME
	fflush()
}' foo1 foo2 foo3 >foo4

awkstatus=$?
diff /dev/null foo4
if [ $? -ne 0 ] || [ $awkstatus -ne 0 ]; then
	echo 'BAD: T.argv delete ARGV'
fi