#!./perl -w
# Tests for the source filters in coderef-in-@INC
BEGIN {
chdir 't' if -d 't';
@INC = qw(. ../lib);
require 'test.pl';
skip_all_if_miniperl('no dynamic loading on miniperl, no Filter::Util::Call');
skip_all_without_perlio();
}
use strict;
use Config;
use Filter::Util::Call;
plan(tests => 153);
unshift @INC, sub {
no warnings 'uninitialized';
ref $_[1] eq 'ARRAY' ? @{$_[1]} : $_[1];
};
my $fh;
open $fh, "<", \'pass("Can return file handles from \@INC");';
do $fh or die;
my @origlines = ("# This is a blank line\n",
"pass('Can return generators from \@INC');\n",
"pass('Which return multiple lines');\n",
"1",
);
my @lines = @origlines;
sub generator {
$_ = shift @lines;
# Return of 0 marks EOF
return defined $_ ? 1 : 0;
};
do \&generator or die;
@lines = @origlines;
# Check that the array dereferencing works ready for the more complex tests:
do [\&generator] or die;
sub generator_with_state {
my $param = $_[1];
is (ref $param, 'ARRAY', "Got our parameter");
$_ = shift @$param;
return defined $_ ? 1 : 0;
}
do [\&generator_with_state,
["pass('Can return generators which take state');\n",
"pass('And return multiple lines');\n",
]] or die;
open $fh, "<", \'fail("File handles and filters work from \@INC");';
do [$fh, sub {s/fail/pass/; return;}] or die;
open $fh, "<", \'fail("File handles and filters with state work from \@INC");';
do [$fh, sub {s/$_[1]/pass/; return;}, 'fail'] or die;
print "# 2 tests with pipes from subprocesses.\n";
my ($echo_command, $pass_arg, $fail_arg);
if ($^O eq 'VMS') {
$echo_command = 'write sys$output';
$pass_arg = '"pass"';
$fail_arg = '"fail"';
}
else {
$echo_command = 'echo';
$pass_arg = 'pass';
$fail_arg = 'fail';
}
open $fh, "$echo_command $pass_arg|" or die $!;
do $fh or die;
open $fh, "$echo_command $fail_arg|" or die $!;
do [$fh, sub {s/$_[1]/pass/; return;}, 'fail'] or die;
sub rot13_filter {
filter_add(sub {
my $status = filter_read();
tr/A-Za-z/N-ZA-Mn-za-m/;
$status;
})
}
open $fh, "<", \<<'EOC';
BEGIN {rot13_filter};
cnff("This will rot13'ed prepend");
EOC
do $fh or die;
open $fh, "<", \<<'EOC';
ORTVA {ebg13_svygre};
pass("This will rot13'ed twice");
EOC
do [$fh, sub {tr/A-Za-z/N-ZA-Mn-za-m/; return;}] or die;
my $count = 32;
sub prepend_rot13_filter {
filter_add(sub {
my $previous = $_;
# Filters should append to any existing data in $_
# But (logically) shouldn't filter it twice.
my $test = "fzrt!";
$_ = $test;
my $status = filter_read();
my $got = substr $_, 0, length $test, '';
is $got, $test, "Upstream didn't alter existing data";
tr/A-Za-z/N-ZA-Mn-za-m/;
$_ = $previous . $_;
die "Looping infinitely" unless $count--;
$status;
})
}
open $fh, "<", \<<'EOC';
ORTVA {cercraq_ebg13_svygre};
pass("This will rot13'ed twice");
EOC
do [$fh, sub {tr/A-Za-z/N-ZA-Mn-za-m/; return;}] or die;
# This generates a heck of a lot of oks, but I think it's necessary.
my $amount = 1;
sub prepend_block_counting_filter {
filter_add(sub {
my $output = $_;
my $count = 256;
while (--$count) {
$_ = '';
my $status = filter_read($amount);
cmp_ok (length $_, '<=', $amount, "block mode works?");
$output .= $_;
if ($status <= 0 or /\n/s) {
$_ = $output;
return $status;
}
}
die "Looping infinitely";
})
}
open $fh, "<", \<<'EOC';
BEGIN {prepend_block_counting_filter};
pass("one by one");
pass("and again");
EOC
do [$fh, sub {return;}] or die;
open $fh, "<", \<<'EOC';
BEGIN {prepend_block_counting_filter};
pas("SSS make s fast SSS");
EOC
TODO: {
todo_skip "disabled under -Dmad", 50 if $Config{mad};
do [$fh, sub {s/s/ss/gs; s/([\nS])/$1$1$1/gs; return;}] or die;
}
sub prepend_line_counting_filter {
filter_add(sub {
my $output = $_;
$_ = '';
my $status = filter_read();
my $newlines = tr/\n//;
cmp_ok ($newlines, '<=', 1, "1 line at most?");
$_ = $output . $_ if defined $output;
return $status;
})
}
open $fh, "<", \<<'EOC';
BEGIN {prepend_line_counting_filter};
pass("You should see this line thrice");
EOC
do [$fh, sub {$_ .= $_ . $_; return;}] or die;
do \"pass\n(\n'Scalar references are treated as initial file contents'\n)\n"
or die;
use constant scalarreffee =>
"pass\n(\n'Scalar references are treated as initial file contents'\n)\n";
do \scalarreffee or die;
is scalarreffee,
"pass\n(\n'Scalar references are treated as initial file contents'\n)\n",
'and are not gobbled up when read-only';
{
local $SIG{__WARN__} = sub {}; # ignore deprecation warning from ?...?
do qr/a?, 1/;
pass "No crash (perhaps) when regexp ref is returned from inc filter";
# Even if that outputs "ok", it may not have passed, as the crash
# occurs during globular destruction. But the crash will result in
# this script failing.
}
open $fh, "<", \"ss('The file is concatenated');";
do [\'pa', $fh] or die;
open $fh, "<", \"ff('Gur svygre vf bayl eha ba gur svyr');";
do [\'pa', $fh, sub {tr/A-Za-z/N-ZA-Mn-za-m/; return;}] or die;
open $fh, "<", \"SS('State also works');";
do [\'pa', $fh, sub {s/($_[1])/lc $1/ge; return;}, "S"] or die;
@lines = ('ss', '(', "'you can use a generator'", ')');
do [\'pa', \&generator] or die;
do [\'pa', \&generator_with_state,
["ss('And generators which take state');\n",
"pass('And return multiple lines');\n",
]] or die;
@origlines = keys %{{ "1\n+\n2\n" => 1 }};
@lines = @origlines;
do \&generator or die;
is $origlines[0], "1\n+\n2\n", 'ink filters do not mangle cow buffers';
@lines = ('$::the_array = "', [], '"');
do \&generator or die;
like ${$::{the_array}}, qr/^ARRAY\(0x.*\)\z/,
'setting $_ to ref in inc filter';
@lines = ('$::the_array = "', do { no warnings 'once'; *foo}, '"');
do \&generator or die;
is ${$::{the_array}}, "*main::foo", 'setting $_ to glob in inc filter';
@lines = (
'$::the_array = "',
do { no strict; no warnings; *{"foo\nbar"}},
'"');
do \&generator or die;
is ${$::{the_array}}, "*main::foo\nbar",
'setting $_ to multiline glob in inc filter';
sub TIESCALAR { bless \(my $thing = pop), shift }
sub FETCH {${$_[0]}}
my $done;
do sub {
return 0 if $done;
tie $_, "main", '$::the_scalar = 98732';
return $done = 1;
} or die;
is ${$::{the_scalar}}, 98732, 'tying $_ in inc filter';
@lines = ('$::the_scalar', '= "12345"');
tie my $ret, "main", 1;
do sub :lvalue {
return 0 unless @lines;
$_ = shift @lines;
return $ret;
} or die;
is ${$::{the_scalar}}, 12345, 'returning tied val from inc filter';
# d8723a6a74b2c12e wasn't perfect, as the char * returned by SvPV*() can be
# a temporary, freed at the next FREETMPS. And there is a FREETMPS in
# pp_require
for (0 .. 1) {
# Need both alternatives on the regexp, because currently the logic in
# pp_require for what is written to %INC is somewhat confused
open $fh, "<",
\'like(__FILE__, qr/(?:GLOB|CODE)\(0x[0-9a-f]+\)/, "__FILE__ is valid");';
do $fh or die;
}
# [perl #91880] $_ having the wrong refcount inside a
{ # filter sub
local @INC; local $|;
unshift @INC, sub { sub { undef *_; --$| }};
do "dah";
pass '$_ has the right refcount inside a filter sub';
}