#!./perl

# This is written in a peculiar style, since we're trying to avoid
# most of the constructs we'll be testing for.  (This comment is
# probably obsolete on the avoidance side, though still currrent
# on the peculiarity side.)

$| = 1;

# for testing TEST only
#BEGIN { require '../lib/strict.pm'; strict->import() };
#BEGIN { require '../lib/warnings.pm'; warnings->import() };

# Let tests know they're running in the perl core.  Useful for modules
# which live dual lives on CPAN.
$ENV{PERL_CORE} = 1;

# remove empty elements due to insertion of empty symbols via "''p1'" syntax
@ARGV = grep($_,@ARGV) if $^O eq 'VMS';
our $show_elapsed_time = $ENV{HARNESS_TIMER} || 0;

# Cheesy version of Getopt::Std.  Maybe we should replace it with that.
{
    my @argv = ();
    foreach my $idx (0..$#ARGV) {
	push( @argv, $ARGV[$idx] ), next unless $ARGV[$idx] =~ /^-(\S+)$/;
	$::core    = 1 if $1 eq 'core';
	$::verbose = 1 if $1 eq 'v';
	$::torture = 1 if $1 eq 'torture';
	$::with_utf8 = 1 if $1 eq 'utf8';
	$::with_utf16 = 1 if $1 eq 'utf16';
	$::bytecompile = 1 if $1 eq 'bytecompile';
	$::compile = 1 if $1 eq 'compile';
	$::taintwarn = 1 if $1 eq 'taintwarn';
	$ENV{PERL_CORE_MINITEST} = 1 if $1 eq 'minitest';
	if ($1 =~ /^deparse(,.+)?$/) {
	    $::deparse = 1;
	    $::deparse_opts = $1;
	}
    }
    @ARGV = @argv;
}

chdir 't' if -f 't/TEST';

die "You need to run \"make test\" first to set things up.\n"
  unless -e 'perl' or -e 'perl.exe' or -e 'perl.pm';

if ($ENV{PERL_3LOG}) { # Tru64 third(1) tool, see perlhack
    unless (-x 'perl.third') {
	unless (-x '../perl.third') {
	    die "You need to run \"make perl.third first.\n";
	}
	else {
	    print "Symlinking ../perl.third as perl.third...\n";
	    die "Failed to symlink: $!\n"
		unless symlink("../perl.third", "perl.third");
	    die "Symlinked but no executable perl.third: $!\n"
		unless -x 'perl.third';
	}
    }
}

# check leakage for embedders
$ENV{PERL_DESTRUCT_LEVEL} = 2 unless exists $ENV{PERL_DESTRUCT_LEVEL};

$ENV{EMXSHELL} = 'sh';        # For OS/2

# Roll your own File::Find!
use TestInit;
use File::Spec;
if ($show_elapsed_time) { require Time::HiRes }
my $curdir = File::Spec->curdir;
my $updir  = File::Spec->updir;

sub _find_tests {
    my($dir) = @_;
    opendir DIR, $dir or die "Trouble opening $dir: $!";
    foreach my $f (sort { $a cmp $b } readdir DIR) {
	next if $f eq $curdir or $f eq $updir or
	    $f =~ /^(?:CVS|RCS|SCCS|\.svn)$/;

	my $fullpath = File::Spec->catfile($dir, $f);

	_find_tests($fullpath) if -d $fullpath;
	$fullpath = VMS::Filespec::unixify($fullpath) if $^O eq 'VMS';
	push @ARGV, $fullpath if $f =~ /\.t$/;
    }
}

sub _quote_args {
    my ($args) = @_;
    my $argstring = '';

    foreach (split(/\s+/,$args)) {
       # In VMS protect with doublequotes because otherwise
       # DCL will lowercase -- unless already doublequoted.
       $_ = q(").$_.q(") if ($^O eq 'VMS') && !/^\"/ && length($_) > 0;
       $argstring .= ' ' . $_;
    }
    return $argstring;
}

sub _populate_hash {
    return map {$_, 1} split /\s+/, $_[0];
}

unless (@ARGV) {
    foreach my $dir (qw(base comp cmd run io op uni)) {
	_find_tests($dir);
    }
    _find_tests("lib") unless $::core;
    # Config.pm may be broken for make minitest. And this is only a refinement
    # for skipping tests on non-default builds, so it is allowed to fail.
    # What we want to to is make a list of extensions which we did not build.
    my $configsh = File::Spec->catfile($updir, "config.sh");
    my %skip;
    if (-f $configsh) {
	my (%extensions, %known_extensions);
	open FH, $configsh or die "Can't open $configsh: $!";
	while (<FH>) {
	    if (/^extensions=['"](.*)['"]$/) {
		# Deliberate string interpolation to avoid triggering possible
		# $1 resetting bugs.
		%extensions = _populate_hash ("$1");
	    }
	    elsif (/^known_extensions=['"](.*)['"]$/) {
		%known_extensions = _populate_hash ($1);
	    }
	}
	if (%extensions) {
	    if (%known_extensions) {
		foreach (keys %known_extensions) {
		    $skip{$_}++ unless $extensions{$_};
		}
	    } else {
		warn "No known_extensions line found in $configsh";
	    }
	} else {
	    warn "No extensions line found in $configsh";
	}
    }
    my $mani = File::Spec->catfile($updir, "MANIFEST");
    if (open(MANI, $mani)) {
	while (<MANI>) { # similar code in t/harness
	    if (m!^(ext/(\S+)/+(?:[^/\s]+\.t|test\.pl)|lib/\S+?(?:\.t|test\.pl))\s!) {
		my $t = $1;
		my $extension = $2;
		if (!$::core || $t =~ m!^lib/[a-z]!)
		{
		    if (defined $extension) {
			$extension =~ s!/t$!!;
			# XXX Do I want to warn that I'm skipping these?
			next if $skip{$extension};
		    }
		    my $path = File::Spec->catfile($updir, $t);
		    push @ARGV, $path;
		    $::path_to_name{$path} = $t;
		}
	    }
	}
	close MANI;
    } else {
	warn "$0: cannot open $mani: $!\n";
    }
    unless ($::core) {
	_find_tests('pod');
	_find_tests('x2p');
	_find_tests('japh') if $::torture;
    }
}

# Tests known to cause infinite loops for the perlcc tests.
# %::infinite = ( 'comp/require.t', 1, 'op/bop.t', 1, 'lib/hostname.t', 1 );
%::infinite = ();

if ($::deparse) {
    _testprogs('deparse', '',   @ARGV);
}
elsif( $::compile ) {
    _testprogs('compile', '',   @ARGV);
}
elsif( $::bytecompile ) {
    _testprogs('bytecompile', '', @ARGV);
}
elsif ($::with_utf16) {
    for my $e (0, 1) {
	for my $b (0, 1) {
	    print STDERR "# ENDIAN $e BOM $b\n";
	    my @UARGV;
	    for my $a (@ARGV) {
		my $u = $a . "." . ($e ? "l" : "b") . "e" . ($b ? "b" : "");
		my $f = $e ? "v" : "n";
		push @UARGV, $u;
		unlink($u);
		if (open(A, $a)) {
		    if (open(U, ">$u")) {
			print U pack("$f", 0xFEFF) if $b;
			while (<A>) {
			    print U pack("$f*", unpack("C*", $_));
			}
			close(U);
		    }
		    close(A);
		}
	    }
	    _testprogs('perl', '', @UARGV);
	    unlink(@UARGV);
	}
    }
}
else {
    _testprogs('compile', '',   @ARGV) if -e "../testcompile";
    _testprogs('perl',    '',   @ARGV);
}

sub _testprogs {
    my ($type, $args, @tests) = @_;

    print <<'EOT' if ($type eq 'compile');
------------------------------------------------------------------------------
TESTING COMPILER
------------------------------------------------------------------------------
EOT

    print <<'EOT' if ($type eq 'deparse');
------------------------------------------------------------------------------
TESTING DEPARSER
------------------------------------------------------------------------------
EOT

    print <<EOT if ($type eq 'bytecompile');
------------------------------------------------------------------------------
TESTING BYTECODE COMPILER
------------------------------------------------------------------------------
EOT

    $ENV{PERLCC_TIMEOUT} = 120
	  if ($type eq 'compile' && !$ENV{PERLCC_TIMEOUT});

    $::bad_files = 0;

    foreach my $t (@tests) {
      unless (exists $::path_to_name{$t}) {
	my $tname = File::Spec->catfile('t',$t);
	$tname = VMS::Filespec::unixify($tname) if $^O eq 'VMS';
	$::path_to_name{$t} = $tname;
      }
    }
    my $maxlen = 0;
    foreach (@::path_to_name{@tests}) {
	s/\.\w+\z/./;
	my $len = length ;
	$maxlen = $len if $len > $maxlen;
    }
    # + 3 : we want three dots between the test name and the "ok"
    my $dotdotdot = $maxlen + 3 ;
    my $valgrind = 0;
    my $valgrind_log = 'current.valgrind';
    my $total_files = @tests;
    my $good_files = 0;
    my $tested_files  = 0;
    my $totmax = 0;

    while (my $test = shift @tests) {
        my $test_start_time = $show_elapsed_time ? Time::HiRes::time() : 0;

	if ( $::infinite{$test} && $type eq 'compile' ) {
	    print STDERR "$test creates infinite loop! Skipping.\n";
	    next;
	}
	if ($test =~ /^$/) {
	    next;
	}
	if ($type eq 'deparse') {
	    if ($test eq "comp/redef.t") {
		# Redefinition happens at compile time
		next;
	    }
	    elsif ($test =~ m{lib/Switch/t/}) {
		# B::Deparse doesn't support source filtering
		next;
	    }
	}
	my $te = $::path_to_name{$test} . '.'
		    x ($dotdotdot - length($::path_to_name{$test}));

	if ($^O ne 'VMS') {  # defer printing on VMS due to piping bug
	    print $te;
	    $te = '';
	}

	# XXX DAPM %OVER not defined anywhere
	# $test = $OVER{$test} if exists $OVER{$test};

	open(SCRIPT,"<",$test) or die "Can't run $test.\n";
	$_ =