#!./perl -w

# Tests for the command-line switches:
# -0, -c, -l, -s, -m, -M, -V, -v, -h, -i, -E and all unknown
# Some switches have their own tests, see MANIFEST.

BEGIN {
    chdir 't' if -d 't';
    @INC = '../lib';
}

BEGIN { require "./test.pl"; }

plan(tests => 115);

use Config;
use Errno qw(EACCES EISDIR);
use POSIX qw(setlocale LC_ALL);

# due to a bug in VMS's piping which makes it impossible for runperl()
# to emulate echo -n (ie. stdin always winds up with a newline), these 
# tests almost totally fail.
$TODO = "runperl() unable to emulate echo -n due to pipe bug" if $^O eq 'VMS';

my $r;
my @tmpfiles = ();
END { unlink_all @tmpfiles }

# Tests for -0

$r = runperl(
    switches	=> [ '-0', ],
    stdin	=> 'foo\0bar\0baz\0',
    prog	=> 'print qq(<$_>) while <>',
);
is( $r, "<foo\0><bar\0><baz\0>", "-0" );

$r = runperl(
    switches	=> [ '-l', '-0', '-p' ],
    stdin	=> 'foo\0bar\0baz\0',
    prog	=> '1',
);
is( $r, "foo\nbar\nbaz\n", "-0 after a -l" );

$r = runperl(
    switches	=> [ '-0', '-l', '-p' ],
    stdin	=> 'foo\0bar\0baz\0',
    prog	=> '1',
);
is( $r, "foo\0bar\0baz\0", "-0 before a -l" );

$r = runperl(
    switches	=> [ sprintf("-0%o", ord 'x') ],
    stdin	=> 'fooxbarxbazx',
    prog	=> 'print qq(<$_>) while <>',
);
is( $r, "<foox><barx><bazx>", "-0 with octal number" );

$r = runperl(
    switches	=> [ '-00', '-p' ],
    stdin	=> 'abc\ndef\n\nghi\njkl\nmno\n\npq\n',
    prog	=> 's/\n/-/g;$_.=q(/)',
);
is( $r, 'abc-def--/ghi-jkl-mno--/pq-/', '-00 (paragraph mode)' );

$r = runperl(
    switches	=> [ '-0777', '-p' ],
    stdin	=> 'abc\ndef\n\nghi\njkl\nmno\n\npq\n',
    prog	=> 's/\n/-/g;$_.=q(/)',
);
is( $r, 'abc-def--ghi-jkl-mno--pq-/', '-0777 (slurp mode)' );

$r = runperl(
    switches	=> [ '-066' ],
    prog	=> 'BEGIN { print qq{($/)} } print qq{[$/]}',
);
is( $r, "(\066)[\066]", '$/ set at compile-time' );

# Tests for -c

my $filename = tempfile();
SKIP: {
    local $TODO = '';   # this one works on VMS

    open my $f, ">$filename" or skip( "Can't write temp file $filename: $!" );
    print $f <<'SWTEST';
BEGIN { print "block 1\n"; }
CHECK { print "block 2\n"; }
INIT  { print "block 3\n"; }
	print "block 4\n";
END   { print "block 5\n"; }
SWTEST
    close $f or die "Could not close: $!";
    $r = runperl(
	switches	=> [ '-c' ],
	progfile	=> $filename,
	stderr		=> 1,
    );
    # Because of the stderr redirection, we can't tell reliably the order
    # in which the output is given
    ok(
	$r =~ /$filename syntax OK/
	&& $r =~ /\bblock 1\b/
	&& $r =~ /\bblock 2\b/
	&& $r !~ /\bblock 3\b/
	&& $r !~ /\bblock 4\b/
	&& $r !~ /\bblock 5\b/,
	'-c'
    );
}

{
    my $tempdir = tempfile;
    mkdir $tempdir, 0700 or die "Can't mkdir '$tempdir': $!";

    local $ENV{'LC_ALL'} = 'C'; # Keep the test simple: expect English
    local $ENV{LANGUAGE} = 'C';
    setlocale(LC_ALL, "C");

    # Win32 won't let us open the directory, so we never get to die with
    # EISDIR, which happens after open.
    my $error  = do { local $! = $^O eq 'MSWin32' ? EACCES : EISDIR; "$!" };
    like(
        runperl( switches => [ '-c' ], args  => [ $tempdir ], stderr => 1),
        qr/Can't open perl script.*$tempdir.*\Q$error/s,
        "RT \#61362: Cannot syntax-check a directory"
    );
    rmdir $tempdir or die "Can't rmdir '$tempdir': $!";
}

# Tests for -l

$r = runperl(
    switches	=> [ sprintf("-l%o", ord 'x') ],
    prog	=> 'print for qw/foo bar/'
);
is( $r, 'fooxbarx', '-l with octal number' );

# Tests for -s

$r = runperl(
    switches	=> [ '-s' ],
    prog	=> 'for (qw/abc def ghi/) {print defined $$_ ? $$_ : q(-)}',
    args	=> [ '--', '-abc=2', '-def', ],
);
is( $r, '21-', '-s switch parsing' );

$filename = tempfile();
SKIP: {
    open my $f, ">$filename" or skip( "Can't write temp file $filename: $!" );
    print $f <<'SWTEST';
#!perl -s
BEGIN { print $x,$y; exit }
SWTEST
    close $f or die "Could not close: $!";
    $r = runperl(
	progfile    => $filename,
	args	    => [ '-x=foo -y' ],
    );
    is( $r, 'foo1', '-s on the shebang line' );
}

# Bug ID 20011106.084
$filename = tempfile();
SKIP: {
    open my $f, ">$filename" or skip( "Can't write temp file $filename: $!" );
    print $f <<'SWTEST';
#!perl -sn
BEGIN { print $x; exit }
SWTEST
    close $f or die "Could not close: $!";
    $r = runperl(
	progfile    => $filename,
	args	    => [ '-x=foo' ],
    );
    is( $r, 'foo', '-sn on the shebang line' );
}

# Tests for -m and -M

my $package = tempfile();
$filename = "$package.pm";
SKIP: {
    open my $f, ">$filename" or skip( "Can't write temp file $filename: $!",4 );
    print $f <<"SWTESTPM";
package $package;
sub import { print map "<\$_>", \@_ }
1;
SWTESTPM
    close $f or die "Could not close: $!";
    $r = runperl(
	switches    => [ "-M$package" ],
	prog	    => '1',
    );
    is( $r, "<$package>", '-M' );
    $r = runperl(
	switches    => [ "-M$package=foo" ],
	prog	    => '1',
    );
    is( $r, "<$package><foo>", '-M with import parameter' );
    $r = runperl(
	switches    => [ "-m$package" ],
	prog	    => '1',
    );

    {
        local $TODO = '';  # this one works on VMS
        is( $r, '', '-m' );
    }
    $r = runperl(
	switches    => [ "-m$package=foo,bar" ],
	prog	    => '1',
    );
    is( $r, "<$package><foo><bar>", '-m with import parameters' );
    push @tmpfiles, $filename;

  {
    local $TODO = '';  # these work on VMS

    is( runperl( switches => [ '-MTie::Hash' ], stderr => 1, prog => 1 ),
	  '', "-MFoo::Bar allowed" );

    like( runperl( switches => [ "-M:$package" ], stderr => 1,
		   prog => 'die q{oops}' ),
	  qr/Invalid module name [\w:]+ with -M option\b/,
          "-M:Foo not allowed" );

    like( runperl( switches => [ '-mA:B:C' ], stderr => 1,
		   prog => 'die q{oops}' ),
	  qr/Invalid module name [\w:]+ with -m option\b/,
          "-mFoo:Bar not allowed" );

    like( runperl( switches => [ '-m-A:B:C' ], stderr => 1,
		   prog => 'die q{oops}' ),
	  qr/Invalid module name [\w:]+ with -m option\b/,
          "-m-Foo:Bar not allowed" );

    like( runperl( switches => [ '-m-' ], stderr => 1,
		   prog => 'die q{oops}' ),
	  qr/Module name required with -m option\b/,
  	  "-m- not allowed" );

    like( runperl( switches => [ '-M-=' ], stderr => 1,
		   prog => 'die q{oops}' ),
	  qr/Module name required with -M option\b/,
  	  "-M- not allowed" );
  }  # disable TODO on VMS
}
is runperl(stderr => 1, prog => '#!perl -m'),
   qq 'Too late for "-m" option at -e line 1.\n', '#!perl -m';
is runperl(stderr => 1, prog => '#!perl -M'),
   qq 'Too late for "-M" option at -e line 1.\n', '#!perl -M';

# Tests for -V

{
    local $TODO = '';   # these ones should work on VMS

    # basic perl -V should generate significant output.
    # we don't test actual format too much since it could change
    like( runperl( switches => ['-V'] ), qr/(\n.*){20}/,
          '-V generates 20+ lines' );

    like( runperl( switches => ['-V'] ),
	  qr/\ASummary of my perl5 .*configuration:/,
          '-V looks okay' );

    # lookup a known config var
    chomp( $r=runperl( switches => ['-V:osname'] ) );
    is( $r, "osname='$^O';", 'perl -V:osname');

    # lookup a nonexistent var
    chomp( $r=runperl( switches => ['-V:this_var_makes_switches_test_fail'] ) );
    is( $r, "this_var_makes_switches_test_fail='UNKNOWN';",
        'perl -V:unknown var');

    # regexp lookup
    # platforms that don't like this quoting can either skip this test
    # or fix test.pl _quote_args
    $r = runperl( switches => ['"-V:i\D+size"'] );
    # should be unlike( $r, qr/^$|not found|UNKNOWN/ );
    like( $r, qr/^(?!.*(not found|UNKNOWN))./, 'perl -V:re got a result' );

    # make sure each line we got matches the re
    ok( !( grep !/^i\D+size=/, split /^/, $r ), '-V:re correct' );
}

# Tests for -v

{
    local $TODO = '';   # these ones should work on VMS
    # there are definitely known build configs where this test will fail
    # DG/UX comes to mind. Maybe we should remove these special cases?
    my $v = sprintf "%vd", $^V;
    my $ver = $Config{PERL_VERSION};
    my $rel = $Config{PERL_SUBVERSION};
    like( runperl( switches => ['-v'] ),
	  qr/This is perl 5, version \Q$ver\E, subversion \Q$rel\E \(v\Q$v\E(?:[-*\w]+| \([^)]+\))?\) built for \Q$Config{archname}\E.+Copyright.+Larry Wall.+Artistic License.+GNU General Public License/s,
          '-v looks okay' );

}

# Tests for -h

{
    local $TODO = '';   # these ones should work on VMS

    like( runperl( switches => ['-h'] ),
	  qr/Usage: .+(?i:perl(?:$Config{_exe})?).+switches.+programfile.+arguments/,
          '-h looks okay' );

}

# Tests for switches which do not exist

foreach my $switch (split //, "ABbGgHJjKkLNOoPQqRrYyZz123456789_")
{
    local $TODO = '';   # these ones should work on VMS

    like( runperl( switches => ["-$switch"], stderr => 1,
		   prog => 'die q{oops}' ),
	  qr/\QUnrecognized switch: -$switch  (-h will show valid options)./,
          "-$switch correctly unknown" );

    # [perl #104288]
    like( runperl( stderr => 1, prog => "#!perl -$switch" ),
	  qr/^Unrecognized switch: -$switch  \(-h will show valid (?x:
	     )options\) at -e line 1\./,
          "-$switch unrecognised on #! line" );
}

# Tests for unshebangable switches
for (qw( e f x E S V )) {
    $r = runperl(
	stderr   => 1,
	prog     => "#!perl -$_",
    );
    is $r, "Can't emulate -$_ on #! line at -e line 1.\n","-$_ on #! line";
}

# Tests for -i

{
    local $TODO = '';   # these ones should work on VMS

    sub do_i_unlink { unlink_all("file", "file.bak") }

    open(FILE, ">file") or die "$0: Failed to create 'file': $!";
    print FILE <<__EOF__;
foo yada dada
bada foo bing
king kong foo
__EOF__
    close FILE;

    END { do_i_unlink() }

    runperl( switches => ['-pi.bak'], prog => 's/foo/bar/', args => ['file'] );

    open(FILE, "file") or die "$0: Failed to open 'file': $!";
    chomp(my @file = <FILE>);
    close FILE;

    open(BAK, "file.bak") or die "$0: Failed to open 'file': $!";
    chomp(my @bak = <BAK>);
    close BAK;

    is(join(":", @file),
       "bar yada dada:bada bar bing:king kong bar",
       "-i new file");
    is(join(":", @bak),
       "foo yada dada:bada foo bing:king kong foo",
       "-i backup file");

    my $out1 = runperl(
        switches => ['-i.bak -p'],
        prog     => 'exit',
        stderr   => 1,
        stdin    => "1\n",
    );
    is(
        $out1,
        "-i used with no filenames on the command line, reading from STDIN.\n",
        "warning when no files given"
    );
    my $out2 = runperl(
        switches => ['-i.bak -p'],
        prog     => 'exit',
        stderr   => 1,
        stdin    => "1\n",
        args     => ['file'],
    );
    is($out2, "", "no warning when files given");
}

# Tests for -E

$TODO = '';  # the -E tests work on VMS

$r = runperl(
    switches	=> [ '-E', '"say q(Hello, world!)"']
);
is( $r, "Hello, world!\n", "-E say" );


$r = runperl(
    switches	=> [ '-E', '"no warnings q{experimental::smartmatch}; undef ~~ undef and say q(Hello, world!)"']
);
is( $r, "Hello, world!\n", "-E ~~" );

$r = runperl(
    switches	=> [ '-E', '"no warnings q{experimental::smartmatch}; given(undef) {when(undef) { say q(Hello, world!)"}}']
);
is( $r, "Hello, world!\n", "-E given" );

$r = runperl(
    switches    => [ '-nE', q("} END { say q/affe/") ],
    stdin       => 'zomtek',
);
is( $r, "affe\n", '-E works outside of the block created by -n' );

$r = runperl(
    switches	=> [ '-E', q("*{'bar'} = sub{}; print 'Hello, world!',qq|\n|;")]
);
is( $r, "Hello, world!\n", "-E does not enable strictures" );

# RT #30660

$filename = tempfile();
SKIP: {
    open my $f, ">$filename" or skip( "Can't write temp file $filename: $!" );
    print $f <<'SWTEST';
#!perl -w    -iok
print "$^I\n";
SWTEST
    close $f or die "Could not close: $!";
    $r = runperl(
	progfile    => $filename,
    );
    like( $r, qr/ok/, 'Spaces on the #! line (#30660)' );
}
