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Editing: Pod.pm

package Test::Pod;

use strict;

=head1 NAME

Test::Pod - check for POD errors in files

=head1 VERSION

Version 1.48

=cut

our $VERSION = '1.48';

=head1 SYNOPSIS

C<Test::Pod> lets you check the validity of a POD file, and report
its results in standard C<Test::Simple> fashion.

use Test::Pod tests => $num_tests;
    pod_file_ok( $file, "Valid POD file" );

Module authors can include the following in a F<t/pod.t> file and
have C<Test::Pod> automatically find and check all POD files in a
module distribution:

use Test::More;
    eval "use Test::Pod 1.00";
    plan skip_all => "Test::Pod 1.00 required for testing POD" if $@;
    all_pod_files_ok();

You can also specify a list of files to check, using the
C<all_pod_files()> function supplied:

use strict;
    use Test::More;
    eval "use Test::Pod 1.00";
    plan skip_all => "Test::Pod 1.00 required for testing POD" if $@;
    my @poddirs = qw( blib script );
    all_pod_files_ok( all_pod_files( @poddirs ) );

Or even (if you're running under L<Apache::Test>):

use strict;
    use Test::More;
    eval "use Test::Pod 1.00";
    plan skip_all => "Test::Pod 1.00 required for testing POD" if $@;

my @poddirs = qw( blib script );
    use File::Spec::Functions qw( catdir updir );
    all_pod_files_ok(
        all_pod_files( map { catdir updir, $_ } @poddirs )
    );

=head1 DESCRIPTION

Check POD files for errors or warnings in a test file, using
C<Pod::Simple> to do the heavy lifting.

=cut

use 5.008;

use Test::Builder;
use Pod::Simple;

our %ignore_dirs = (
    '.bzr' => 'Bazaar',
    '.git' => 'Git',
    '.hg'  => 'Mercurial',
    '.pc'  => 'quilt',
    '.svn' => 'Subversion',
    CVS    => 'CVS',
    RCS    => 'RCS',
    SCCS   => 'SCCS',
    _darcs => 'darcs',
    _sgbak => 'Vault/Fortress',
);

my $Test = Test::Builder->new;

sub import {
    my $self = shift;
    my $caller = caller;

for my $func ( qw( pod_file_ok all_pod_files all_pod_files_ok ) ) {
        no strict 'refs';
        *{$caller."::".$func} = \&$func;
    }

$Test->exported_to($caller);
    $Test->plan(@_);
}

sub _additional_test_pod_specific_checks {
    my ($ok, $errata, $file) = @_;

return $ok;
}

=head1 FUNCTIONS

=head2 pod_file_ok( FILENAME[, TESTNAME ] )

C<pod_file_ok()> will okay the test if the POD parses correctly.  Certain
conditions are not reported yet, such as a file with no pod in it at all.

When it fails, C<pod_file_ok()> will show any pod checking errors as
diagnostics.

The optional second argument TESTNAME is the name of the test.  If it
is omitted, C<pod_file_ok()> chooses a default test name "POD test
for FILENAME".

=cut

sub pod_file_ok {
    my $file = shift;
    my $name = @_ ? shift : "POD test for $file";

if ( !-f $file ) {
        $Test->ok( 0, $name );
        $Test->diag( "$file does not exist" );
        return;
    }

my $checker = Pod::Simple->new;

$checker->output_string( \my $trash ); # Ignore any output
    $checker->parse_file( $file );

my $ok = !$checker->any_errata_seen;
       $ok = _additional_test_pod_specific_checks( $ok, ($checker->{errata}||={}), $file );

$name .= ' (no pod)' if !$checker->content_seen;
    $Test->ok( $ok, $name );
    if ( !$ok ) {
        my $lines = $checker->{errata};
        for my $line ( sort { $a<=>$b } keys %$lines ) {
            my $errors = $lines->{$line};
            $Test->diag( "$file ($line): $_" ) for @$errors;
        }
    }

return $ok;
} # pod_file_ok

=head2 all_pod_files_ok( [@entries] )

Checks all the files under C<@entries> for valid POD. It runs
L<all_pod_files()> on directories and assumes everything else to be a file to
be tested. It calls the C<plan()> function for you (one test for each file),
so you can't have already called C<plan>.

If C<@entries> is empty or not passed, the function finds all POD files in
files in the F<blib> directory if it exists, or the F<lib> directory if not. A
POD file is one that ends with F<.pod>, F<.pl> and F<.pm>, or any file where
the first line looks like a shebang line.

If you're testing a module, just make a F<t/pod.t>:

use Test::More;
    eval "use Test::Pod 1.00";
    plan skip_all => "Test::Pod 1.00 required for testing POD" if $@;
    all_pod_files_ok();

Returns true if all pod files are ok, or false if any fail.

=cut

sub all_pod_files_ok {
    my @args = @_ ? @_ : _starting_points();
    my @files = map { -d $_ ? all_pod_files($_) : $_ } @args;

unless (@files) {
        $Test->skip_all( "No files found in (@args)\n" );
        return 1;
    }

$Test->plan( tests => scalar @files );

my $ok = 1;
    foreach my $file ( @files ) {
        pod_file_ok( $file ) or undef $ok;
    }
    return $ok;
}

=head2 all_pod_files( [@dirs] )

Returns a list of all the Perl files in I<@dirs> and in directories below. If
no directories are passed, it defaults to F<blib> if F<blib> exists, or else
F<lib> if not. Skips any files in F<CVS>, F<.svn>, F<.git> and similar
directories. See C<%Test::Pod::ignore_dirs> for a list of them.

A Perl file is:

=over 4

=item * Any file that ends in F<.PL>, F<.pl>, F<.PL>, F<.pm>, F<.pod>, or F<.t>.

=item * Any file that has a first line with a shebang and "perl" on it.

=item * Any file that ends in F<.bat> and has a first line with "--*-Perl-*--" on it.

=back

The order of the files returned is machine-dependent.  If you want them
sorted, you'll have to sort them yourself.

=cut

sub all_pod_files {
    my @pod;
    require File::Find;
    File::Find::find({
        wanted   => sub { -f $_ && _is_perl ($_) and push @pod, $File::Find::name },
        no_chdir => 1,
    }, @_ ? @_ : _starting_points());
    return @pod;
}

sub _starting_points {
    return 'blib' if -e 'blib';
    return 'lib';
}

sub _is_perl {
    my $file = shift;

return 1 if $file =~ /\.PL$/;
    return 1 if $file =~ /\.p(?:l|m|od)$/;
    return 1 if $file =~ /\.t$/;

open my $fh, '<', $file or return;
    my $first = <$fh>;
    close $fh;

return 1 if defined $first && ($first =~ /(?:^#!.*perl)|--\*-Perl-\*--/);

return;
}

=head1 TODO

STUFF TO DO

Note the changes that are being made.

Note that you no longer can test for "no pod".

=head1 AUTHOR

Currently maintained by David E. Wheeler, C<< <david@justatheory.com> >>.

Originally by brian d foy.

Maintainer emeritus: Andy Lester, C<< <andy at petdance.com> >>.

=head1 ACKNOWLEDGEMENTS

Thanks to
Andy Lester,
David Wheeler,
Paul Miller
and
Peter Edwards
for contributions and to C<brian d foy> for the original code.

=head1 COPYRIGHT AND LICENSE

This module is free software; you can redistribute it and/or modify it under
the same terms as Perl itself.

=cut