import perl 5.16.3 from CPAN - worked on by Andrew Fresh and myself

1 files changed, 362 insertions, 0 deletions

diff --git a/gnu/usr.bin/perl/cpan/Test-Harness/lib/TAP/Parser/SourceHandler/Perl.pm b/gnu/usr.bin/perl/cpan/Test-Harness/lib/TAP/Parser/SourceHandler/Perl.pm
new file mode 100644
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+++ b/gnu/usr.bin/perl/cpan/Test-Harness/lib/TAP/Parser/SourceHandler/Perl.pm
@@ -0,0 +1,362 @@
+package TAP::Parser::SourceHandler::Perl;
+
+use strict;
+use Config;
+use vars qw($VERSION @ISA);
+
+use constant IS_WIN32 => ( $^O =~ /^(MS)?Win32$/ );
+use constant IS_VMS => ( $^O eq 'VMS' );
+
+use TAP::Parser::SourceHandler::Executable ();
+use TAP::Parser::IteratorFactory           ();
+use TAP::Parser::Iterator::Process         ();
+use TAP::Parser::Utils qw( split_shell );
+
+@ISA = 'TAP::Parser::SourceHandler::Executable';
+
+TAP::Parser::IteratorFactory->register_handler(__PACKAGE__);
+
+=head1 NAME
+
+TAP::Parser::SourceHandler::Perl - Stream TAP from a Perl executable
+
+=head1 VERSION
+
+Version 3.23
+
+=cut
+
+$VERSION = '3.23';
+
+=head1 SYNOPSIS
+
+  use TAP::Parser::Source;
+  use TAP::Parser::SourceHandler::Perl;
+
+  my $source = TAP::Parser::Source->new->raw( \'script.pl' );
+  $source->assemble_meta;
+
+  my $class = 'TAP::Parser::SourceHandler::Perl';
+  my $vote  = $class->can_handle( $source );
+  my $iter  = $class->make_iterator( $source );
+
+=head1 DESCRIPTION
+
+This is a I<Perl> L<TAP::Parser::SourceHandler> - it has 2 jobs:
+
+1. Figure out if the L<TAP::Parser::Source> it's given is actually a Perl
+script (L</can_handle>).
+
+2. Creates an iterator for Perl sources (L</make_iterator>).
+
+Unless you're writing a plugin or subclassing L<TAP::Parser>, you probably
+won't need to use this module directly.
+
+=head1 METHODS
+
+=head2 Class Methods
+
+=head3 C<can_handle>
+
+  my $vote = $class->can_handle( $source );
+
+Only votes if $source looks like a file.  Casts the following votes:
+
+  0.9  if it has a shebang ala "#!...perl"
+  0.75 if it has any shebang
+  0.8  if it's a .t file
+  0.9  if it's a .pl file
+  0.75 if it's in a 't' directory
+  0.25 by default (backwards compat)
+
+=cut
+
+sub can_handle {
+    my ( $class, $source ) = @_;
+    my $meta = $source->meta;
+
+    return 0 unless $meta->{is_file};
+    my $file = $meta->{file};
+
+    if ( my $shebang = $file->{shebang} ) {
+        return 0.9 if $shebang =~ /^#!.*\bperl/;
+        # We favour Perl as the interpreter for any shebang to preserve
+        # previous semantics: we used to execute everything via Perl and
+        # relied on it to pass the shebang off to the appropriate
+        # interpreter.
+        return 0.3;
+    }
+
+    return 0.8 if $file->{lc_ext} eq '.t';    # vote higher than Executable
+    return 0.9 if $file->{lc_ext} eq '.pl';
+
+    return 0.75 if $file->{dir} =~ /^t\b/;    # vote higher than Executable
+
+    # backwards compat, always vote:
+    return 0.25;
+}
+
+=head3 C<make_iterator>
+
+  my $iterator = $class->make_iterator( $source );
+
+Constructs & returns a new L<TAP::Parser::Iterator::Process> for the source.
+Assumes C<$source-E<gt>raw> contains a reference to the perl script.  C<croak>s
+if the file could not be found.
+
+The command to run is built as follows:
+
+  $perl @switches $perl_script @test_args
+
+The perl command to use is determined by L</get_perl>.  The command generated
+is guaranteed to preserve:
+
+  PERL5LIB
+  PERL5OPT
+  Taint Mode, if set in the script's shebang
+
+I<Note:> the command generated will I<not> respect any shebang line defined in
+your Perl script.  This is only a problem if you have compiled a custom version
+of Perl or if you want to use a specific version of Perl for one test and a
+different version for another, for example:
+
+  #!/path/to/a/custom_perl --some --args
+  #!/usr/local/perl-5.6/bin/perl -w
+
+Currently you need to write a plugin to get around this.
+
+=cut
+
+sub _autoflush_stdhandles {
+    my ($class) = @_;
+
+    $class->_autoflush( \*STDOUT );
+    $class->_autoflush( \*STDERR );
+}
+
+sub make_iterator {
+    my ( $class, $source ) = @_;
+    my $meta        = $source->meta;
+    my $perl_script = ${ $source->raw };
+
+    $class->_croak("Cannot find ($perl_script)") unless $meta->{is_file};
+
+    # TODO: does this really need to be done here?
+    $class->_autoflush_stdhandles;
+
+    my ( $libs, $switches )
+      = $class->_mangle_switches(
+        $class->_filter_libs( $class->_switches($source) ) );
+
+    $class->_run( $source, $libs, $switches );
+}
+
+sub _mangle_switches {
+    my ( $class, $libs, $switches ) = @_;
+
+    # Taint mode ignores environment variables so we must retranslate
+    # PERL5LIB as -I switches and place PERL5OPT on the command line
+    # in order that it be seen.
+    if ( grep { $_ eq "-T" || $_ eq "-t" } @{$switches} ) {
+        return (
+            $libs,
+            [   @{$switches},
+                $class->_libs2switches($libs),
+                split_shell( $ENV{PERL5OPT} )
+            ],
+        );
+    }
+
+    return ( $libs, $switches );
+}
+
+sub _filter_libs {
+    my ( $class, @switches ) = @_;
+
+    my $path_sep = $Config{path_sep};
+    my $path_re  = qr{$path_sep};
+
+    # Filter out any -I switches to be handled as libs later.
+    #
+    # Nasty kludge. It might be nicer if we got the libs separately
+    # although at least this way we find any -I switches that were
+    # supplied other then as explicit libs.
+    #
+    # We filter out any names containing colons because they will break
+    # PERL5LIB
+    my @libs;
+    my @filtered_switches;
+    for (@switches) {
+        if ( !/$path_re/ && m/ ^ ['"]? -I ['"]? (.*?) ['"]? $ /x ) {
+            push @libs, $1;
+        }
+        else {
+            push @filtered_switches, $_;
+        }
+    }
+
+    return \@libs, \@filtered_switches;
+}
+
+sub _iterator_hooks {
+    my ( $class, $source, $libs ) = @_;
+
+    my $setup = sub {
+        if ( @{$libs} ) {
+            $ENV{PERL5LIB} = join(
+                $Config{path_sep}, grep {defined} @{$libs},
+                $ENV{PERL5LIB}
+            );
+        }
+    };
+
+    # Cargo culted from comments seen elsewhere about VMS / environment
+    # variables. I don't know if this is actually necessary.
+    my $previous = $ENV{PERL5LIB};
+    my $teardown = sub {
+        if ( defined $previous ) {
+            $ENV{PERL5LIB} = $previous;
+        }
+        else {
+            delete $ENV{PERL5LIB};
+        }
+    };
+
+    return ( $setup, $teardown );
+}
+
+sub _run {
+    my ( $class, $source, $libs, $switches ) = @_;
+
+    my @command = $class->_get_command_for_switches( $source, $switches )
+      or $class->_croak("No command found!");
+
+    my ( $setup, $teardown ) = $class->_iterator_hooks( $source, $libs );
+
+    return $class->_create_iterator( $source, \@command, $setup, $teardown );
+}
+
+sub _create_iterator {
+    my ( $class, $source, $command, $setup, $teardown ) = @_;
+
+    return TAP::Parser::Iterator::Process->new(
+        {   command  => $command,
+            merge    => $source->merge,
+            setup    => $setup,
+            teardown => $teardown,
+        }
+    );
+}
+
+sub _get_command_for_switches {
+    my ( $class, $source, $switches ) = @_;
+    my $file    = ${ $source->raw };
+    my @args    = @{ $source->test_args || [] };
+    my $command = $class->get_perl;
+
+   # XXX don't need to quote if we treat the parts as atoms (except maybe vms)
+   #$file = qq["$file"] if ( $file =~ /\s/ ) && ( $file !~ /^".*"$/ );
+    my @command = ( $command, @{$switches}, $file, @args );
+    return @command;
+}
+
+sub _libs2switches {
+    my $class = shift;
+    return map {"-I$_"} grep {$_} @{ $_[0] };
+}
+
+=head3 C<get_taint>
+
+Decode any taint switches from a Perl shebang line.
+
+  # $taint will be 't'
+  my $taint = TAP::Parser::SourceHandler::Perl->get_taint( '#!/usr/bin/perl -t' );
+
+  # $untaint will be undefined
+  my $untaint = TAP::Parser::SourceHandler::Perl->get_taint( '#!/usr/bin/perl' );
+
+=cut
+
+sub get_taint {
+    my ( $class, $shebang ) = @_;
+    return
+      unless defined $shebang
+          && $shebang =~ /^#!.*\bperl.*\s-\w*([Tt]+)/;
+    return $1;
+}
+
+sub _switches {
+    my ( $class, $source ) = @_;
+    my $file     = ${ $source->raw };
+    my @switches = @{ $source->switches || [] };
+    my $shebang  = $source->meta->{file}->{shebang};
+    return unless defined $shebang;
+
+    my $taint = $class->get_taint($shebang);
+    push @switches, "-$taint" if defined $taint;
+
+    # Quote the argument if we're VMS, since VMS will downcase anything
+    # not quoted.
+    if (IS_VMS) {
+        for (@switches) {
+            $_ = qq["$_"];
+        }
+    }
+
+    return @switches;
+}
+
+=head3 C<get_perl>
+
+Gets the version of Perl currently running the test suite.
+
+=cut
+
+sub get_perl {
+    my $class = shift;
+    return $ENV{HARNESS_PERL} if defined $ENV{HARNESS_PERL};
+    return Win32::GetShortPathName($^X) if IS_WIN32;
+    return $^X;
+}
+
+1;
+
+__END__
+
+=head1 SUBCLASSING
+
+Please see L<TAP::Parser/SUBCLASSING> for a subclassing overview.
+
+=head2 Example
+
+  package MyPerlSourceHandler;
+
+  use strict;
+  use vars '@ISA';
+
+  use TAP::Parser::SourceHandler::Perl;
+
+  @ISA = qw( TAP::Parser::SourceHandler::Perl );
+
+  # use the version of perl from the shebang line in the test file
+  sub get_perl {
+      my $self = shift;
+      if (my $shebang = $self->shebang( $self->{file} )) {
+          $shebang =~ /^#!(.*\bperl.*?)(?:(?:\s)|(?:$))/;
+	  return $1 if $1;
+      }
+      return $self->SUPER::get_perl(@_);
+  }
+
+=head1 SEE ALSO
+
+L<TAP::Object>,
+L<TAP::Parser>,
+L<TAP::Parser::IteratorFactory>,
+L<TAP::Parser::SourceHandler>,
+L<TAP::Parser::SourceHandler::Executable>,
+L<TAP::Parser::SourceHandler::File>,
+L<TAP::Parser::SourceHandler::Handle>,
+L<TAP::Parser::SourceHandler::RawTAP>
+
+=cut