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echo T.getline: test getline function
awk=${awk-../a.out}
who >foo1
cat foo1 | $awk '
BEGIN {
while (getline)
print
exit
}
' >foo
cmp -s foo1 foo || echo 'BAD: T.getline (bare getline)'
who >foo1
cat foo1 | $awk '
BEGIN {
while (getline xxx)
print xxx
exit
}
' >foo
cmp -s foo1 foo || echo 'BAD: T.getline (getline xxx)'
$awk '
BEGIN {
while (getline <"/etc/passwd")
print
exit
}
' >foo
cmp -s /etc/passwd foo || echo 'BAD: T.getline (getline <file)'
cat /etc/passwd | $awk '
BEGIN {
while (getline <"-") # stdin
print
exit
}
' >foo
cmp -s /etc/passwd foo || echo 'BAD: T.getline (getline <"-")'
$awk '
BEGIN {
while (getline <ARGV[1])
print
exit
}
' /etc/passwd >foo
cmp -s /etc/passwd foo || echo 'BAD: T.getline (getline <arg)'
$awk '
BEGIN {
while (getline x <ARGV[1])
print x
exit
}
' /etc/passwd >foo
cmp -s /etc/passwd foo || echo 'BAD: T.getline (getline x <arg)'
$awk '
BEGIN {
while (("cat " ARGV[1]) | getline)
print
exit
}
' /etc/passwd >foo
cmp -s /etc/passwd foo || echo 'BAD: T.getline (cat arg | getline)'
$awk '
BEGIN {
while (("cat " ARGV[1]) | getline x)
print x
exit
}
' /etc/passwd >foo
cmp -s /etc/passwd foo || echo 'BAD: T.getline (cat arg | getline x)'
$awk ' BEGIN { print getline <"/glop/glop/glop" } ' >foo
echo '-1' >foo1
cmp -s foo foo1 || echo 'BAD: T.getline (non-existent file)'
echo 'false false equal' >foo1
$awk 'BEGIN {
"echo 0" | getline
if ($0) printf "true "
else printf "false "
if ($1) printf "true "
else printf "false "
if ($0==$1) printf "equal\n"
else printf "not equal\n"
}' >foo2
cmp -s foo1 foo2 || echo 1>&2 '
echo 'L1
L2' | $awk 'BEGIN { $0="old stuff"; $1="new"; getline x; print}' >foo1
echo 'new stuff' >foo2
cmp -s foo1 foo2 || echo 1>&2 '
