--- /dev/null
+package Test::NoTabs;
+
+use strict;
+use warnings;
+
+use Test::Builder;
+use File::Spec;
+use FindBin qw($Bin);
+use File::Find;
+
+use vars qw( $VERSION $PERL $UNTAINT_PATTERN $PERL_PATTERN);
+
+$VERSION = '0.9';
+
+$PERL = $^X || 'perl';
+$UNTAINT_PATTERN = qr|^([-+@\w./:\\]+)$|;
+$PERL_PATTERN = qr/^#!.*perl/;
+
+my %file_find_arg = ($] <= 5.006) ? () : (
+ untaint => 1,
+ untaint_pattern => $UNTAINT_PATTERN,
+ untaint_skip => 1,
+);
+
+my $Test = Test::Builder->new;
+my $updir = File::Spec->updir();
+
+sub import {
+ my $self = shift;
+ my $caller = caller;
+ {
+ no strict 'refs';
+ *{$caller.'::notabs_ok'} = \¬abs_ok;
+ *{$caller.'::all_perl_files_ok'} = \&all_perl_files_ok;
+ }
+ $Test->exported_to($caller);
+ $Test->plan(@_);
+}
+
+sub _all_perl_files {
+ my @all_files = _all_files(@_);
+ return grep { _is_perl_module($_) || _is_perl_script($_) } @all_files;
+}
+
+sub _all_files {
+ my @base_dirs = @_ ? @_ : File::Spec->catdir($Bin, $updir);
+ my @found;
+ my $want_sub = sub {
+ return if ($File::Find::dir =~ m![\\/]?CVS[\\/]|[\\/]?.svn[\\/]!); # Filter out cvs or subversion dirs/
+ return if ($File::Find::dir =~ m![\\/]?blib[\\/]libdoc$!); # Filter out pod doc in dist
+ return if ($File::Find::dir =~ m![\\/]?blib[\\/]man\d$!); # Filter out pod doc in dist
+ return if ($File::Find::name =~ m!Build$!i); # Filter out autogenerated Build script
+ return unless (-f $File::Find::name && -r _);
+ push @found, File::Spec->no_upwards( $File::Find::name );
+ };
+ my $find_arg = {
+ %file_find_arg,
+ wanted => $want_sub,
+ no_chdir => 1,
+ };
+ find( $find_arg, @base_dirs);
+ return @found;
+}
+
+sub notabs_ok {
+ my $file = shift;
+ my $test_txt = shift || "No tabs in '$file'";
+ $file = _module_to_path($file);
+ open my $fh, $file or do { $Test->ok(0, $test_txt); $Test->diag("Could not open $file: $!"); return; };
+ my $line = 0;
+ while (<$fh>) {
+ $line++;
+ next if (/^\s*#/);
+ next if (/^\s*=.+/ .. /^\s*=(cut|back|end)/);
+ last if (/^\s*(__END__|__DATA__)/);
+ if ( /\t/ ) {
+ $Test->ok(0, $test_txt . " on line $line");
+ return 0;
+ }
+ }
+ $Test->ok(1, $test_txt);
+ return 1;
+}
+
+sub all_perl_files_ok {
+ my @files = _all_perl_files( @_ );
+ _make_plan();
+ foreach my $file ( @files ) {
+ notabs_ok($file);
+ }
+}
+
+sub _is_perl_module {
+ $_[0] =~ /\.pm$/i || $_[0] =~ /::/;
+}
+
+sub _is_perl_script {
+ my $file = shift;
+ return 1 if $file =~ /\.pl$/i;
+ return 1 if $file =~ /\.t$/;
+ open my $fh, $file or return;
+ my $first = <$fh>;
+ return 1 if defined $first && ($first =~ $PERL_PATTERN);
+ return;
+}
+
+sub _module_to_path {
+ my $file = shift;
+ return $file unless ($file =~ /::/);
+ my @parts = split /::/, $file;
+ my $module = File::Spec->catfile(@parts) . '.pm';
+ foreach my $dir (@INC) {
+ my $candidate = File::Spec->catfile($dir, $module);
+ next unless (-e $candidate && -f _ && -r _);
+ return $candidate;
+ }
+ return $file;
+}
+
+sub _make_plan {
+ unless ($Test->has_plan) {
+ $Test->plan( 'no_plan' );
+ }
+ $Test->expected_tests;
+}
+
+sub _untaint {
+ my @untainted = map { ($_ =~ $UNTAINT_PATTERN) } @_;
+ return wantarray ? @untainted : $untainted[0];
+}
+
+1;
+__END__
+
+=head1 NAME
+
+Test::NoTabs - Check the presence of tabs in your project
+
+=head1 SYNOPSIS
+
+C<Test::NoTabs> lets you check the presence of tabs in your perl code. It
+report its results in standard C<Test::Simple> fashion:
+
+ use Test::NoTabs tests => 1;
+ notabs_ok( 'lib/Module.pm', 'Module is tab free');
+
+Module authors can include the following in a t/notabs.t and have C<Test::NoTabs>
+automatically find and check all perl files in a module distribution:
+
+ use Test::NoTabs;
+ all_perl_files_ok();
+
+or
+
+ use Test::NoTabs;
+ all_perl_files_ok( @mydirs );
+
+=head1 DESCRIPTION
+
+This module scans your project/distribution for any perl files (scripts,
+modules, etc) for the presence of tabs.
+
+=head1 EXPORT
+
+A list of functions that can be exported. You can delete this section
+if you don't export anything, such as for a purely object-oriented module.
+
+=head1 FUNCTIONS
+
+=head2 all_perl_files_ok( [ @directories ] )
+
+Applies C<notabs_ok()> to all perl files found in C<@directories> (and sub
+directories). If no <@directories> is given, the starting point is one level
+above the current running script, that should cover all the files of a typical
+CPAN distribution. A perl file is *.pl or *.pm or *.t or a file starting
+with C<#!...perl>
+
+If the test plan is defined:
+
+ use Test::NoTabs tests => 3;
+ all_perl_files_ok();
+
+the total number of files tested must be specified.
+
+=head2 notabs_ok( $file [, $text] )
+
+Run a tab check on C<$file>. For a module, the path (lib/My/Module.pm) or the
+name (My::Module) can be both used.
+
+=head1 AUTHOR
+
+Nick Gerakines, C<< <nick at socklabs.com> >>
+
+=head1 BUGS
+
+Please report any bugs or feature requests to
+C<bug-test-notabs at rt.cpan.org>, or through the web interface at
+L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Test-NoTabs>.
+I will be notified, and then you'll automatically be notified of progress on
+your bug as I make changes.
+
+=head1 SUPPORT
+
+You can find documentation for this module with the perldoc command.
+
+ perldoc Test::NoTabs
+
+You can also look for information at:
+
+=over 4
+
+=item * AnnoCPAN: Annotated CPAN documentation
+
+L<http://annocpan.org/dist/Test-NoTabs>
+
+=item * CPAN Ratings
+
+L<http://cpanratings.perl.org/d/Test-NoTabs>
+
+=item * RT: CPAN's request tracker
+
+L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=Test-NoTabs>
+
+=item * Search CPAN
+
+L<http://search.cpan.org/dist/Test-NoTabs>
+
+=back
+
+=head1 ACKNOWLEDGEMENTS
+
+Inspired by some code written by Paul Lindner.
+
+L<Test::Strict> was used as an example when creating this module and
+distribution.
+
+Rick Myers and Emanuele Zeppieri also provided valuable feedback.
+
+Patch to fix warnings provided by Florian Ragwitz (rafl)
+
+Currently maintained by Tomas Doran (t0m) C<bobtfish@bobtfish.net>
+
+=head1 SEE ALSO
+
+L<Test::More>, L<Test::Pod>. L<Test::Distribution>, L<Test:NoWarnings>
+
+=head1 COPYRIGHT & LICENSE
+
+Copyright 2006 Nick Gerakines, all rights reserved.
+
+This program is free software; you can redistribute it and/or modify it
+under the same terms as Perl itself.
+
+=cut