The other day I got a new laptop and tried to run a couple scripts on it. I quickly grew tired of the tedious cycle of 'Module::X not found' errors/installing Module::X. I decided to make a tool to improve the situation.
Feel free to give me last minute comments/suggestions before I put it on CPAN (currently it is only available through GitHub). Thanks!
package Module::Extract::Install;
use strict;
use warnings;
use Carp;
use File::Find;
use Module::Extract::Use;
=head1 NAME
Module::Extract::Install - Install missing modules explicitly
loaded by a Perl script or module
=head1 VERSION
Version 0.4.4
=cut
our $VERSION = '0.4.4';
=head1 SYNOPSIS
Via command line:
cpanm-missing file.pl
cpanm-missing-deep path/to/directory
Via a script:
use Module::Extract::Install;
my $installer = Module::Extract::Install->new;
$installer->check_modules(@files);
$installer->check_modules_deep($directory);
my @uninstalled = $installer->not_installed;
my @installed = $installer->previously_installed;
$installer->cpanm;
my @newly_installed = $installer->newly_installed;
my @failed_install = $installer->failed_install;
=head1 DESCRIPTION
Extract the names of the modules explicitly loaded in a Perl script or
module and install them if they are not already installed. Since this
module relies on L<Module::Extract::Use|Module::Extract::Use>, it has
the same caveats regarding identifying loaded modules. Therefore,
modules that are loaded dynamically (e.g., C<eval "require $class">)
will not be installed.
Command-line usage is possible with C<cpanm-missing> and
C<cpanm-missing-deep>, scripts that are installed along with this
module.
=cut
=over 4
=item new
Initializes a new Module::Extract::Install object.
=cut
sub new {
my $class = shift;
my $self = {
_not_installed => {},
_previously_installed => {},
_newly_installed => {},
_failed_install => {},
};
bless $self, $class;
return $self;
}
=item check_modules( FILES )
Analyzes FILES to generate a list of modules explicitly loaded in
FILES and identifies which are not currently installed. Subsequent
calls of this method will continue adding to the lists of modules
that are not installed (or already installed).
=cut
sub check_modules {
my ( $self, @file_list ) = @_;
my $extractor = Module::Extract::Use->new;
# Some pragmas and/or modules misbehave or are irrelevant
my %banned = (
'autodie' => 1,
'base' => 1,
'feature' => 1,
'overload' => 1,
'strict' => 1,
'vars' => 1,
'warnings' => 1,
);
# Ignore things such as 'Prototype mismatch' and deprecation warni
+ngs
my $NOWARN = 0;
$SIG{'__WARN__'} = sub { warn $_[0] unless $NOWARN };
for my $file (@file_list) {
my @module_list = $extractor->get_modules($file);
next if -s $file >= 1048576;
# Temporary method for error handling:
if ( $extractor->error ) {
carp "Problem extracting modules used in $file";
}
for my $module (@module_list) {
next if exists $banned{$module};
$NOWARN = 1;
eval "use $module;";
$NOWARN = 0;
if ($@) {
$self->{_not_installed}{$module}++;
}
else {
$self->{_previously_installed}{$module}++;
}
}
}
}
=item check_modules_deep( DIRECTORY, PATTERN )
Traverses a DIRECTORY and runs C<check_modules()> on files that match
PATTERN, a case-insensitive regular expression. If omitted, PATTERN
defaults to C<^.+\.p[lm]$> and matches files ending in C<.pl> or
C<.pm>. Subsequent calls of this method will continue adding to the
lists of modules that are not installed (or already installed).
=cut
sub check_modules_deep {
my ( $self, $directory, $pattern ) = @_;
$pattern = defined $pattern ? qr/$pattern/i : qr/^.+\.p[lm]$/i;
print "\n";
print "Files found:\n";
find(
sub {
return unless /$pattern/;
print " $File::Find::dir/$_\n";
$self->check_modules($_);
},
$directory
);
print "\n";
}
=item cpanm
Use cpanm to install loaded modules that are not currently installed.
=cut
sub cpanm {
my $self = shift;
my @modules = sort keys %{ $self->{_not_installed} };
for (@modules) {
my $exit_status = system("cpanm $_");
if ($exit_status) {
$self->{_failed_install}{$_}++;
}
else {
delete $self->{_not_installed}{$_};
delete $self->{_failed_install}{$_};
$self->{_newly_installed}{$_}++;
}
}
}
=item not_installed
Returns an alphabetical list of unique modules that were explicitly
loaded, but need to be installed. Modules are removed from this list
upon installation.
=cut
sub not_installed {
my $self = shift;
return sort keys %{ $self->{_not_installed} };
}
=item previously_installed
Returns an alphabetical list of unique installed modules that were
explicitly loaded.
=cut
sub previously_installed {
my $self = shift;
return sort keys %{ $self->{_previously_installed} };
}
=item newly_installed
Returns an alphabetical list of unique modules that were
explicitly loaded, needed to be installed, and were successfully
installed.
=cut
sub newly_installed {
my $self = shift;
return sort keys %{ $self->{_newly_installed} };
}
=item failed_install
Returns an alphabetical list of unique modules that were
explicitly loaded and needed to be installed, but whose installation
failed.
=cut
sub failed_install {
my $self = shift;
return sort keys %{ $self->{_failed_install} };
}
=back
=head1 SEE ALSO
L<Module::Extract::Use|Module::Extract::Use>
=head1 SOURCE AVAILABILITY
The source code is on Github:
L<https://github.com/mfcovington/module-extract-install>
=head1 AUTHOR
Michael F. Covington, <mfcovington@gmail.com>
=head1 BUGS
Please report any bugs or feature requests at
L<https://github.com/mfcovington/module-extract-install/issues>.
=head1 INSTALLATION
To install this module, run the following commands:
perl Build.PL
./Build
./Build test
./Build install
=head1 SUPPORT AND DOCUMENTATION
You can find documentation for this module with the perldoc command.
perldoc Module::Extract::Install
=head1 LICENSE AND COPYRIGHT
Copyright 2014 Michael F. Covington.
This program is free software; you can redistribute it and/or modify i
+t
under the terms of the the Artistic License (2.0). You may obtain a
copy of the full license at:
L<http://www.perlfoundation.org/artistic_license_2_0>
Any use, modification, and distribution of the Standard or Modified
Versions is governed by this Artistic License. By using, modifying or
distributing the Package, you accept this license. Do not use, modify,
or distribute the Package, if you do not accept this license.
If your Modified Version has been derived from a Modified Version made
by someone other than you, you are nevertheless required to ensure tha
+t
your Modified Version complies with the requirements of this license.
This license does not grant you the right to use any trademark, servic
+e
mark, tradename, or logo of the Copyright Holder.
This license includes the non-exclusive, worldwide, free-of-charge
patent license to make, have made, use, offer to sell, sell, import an
+d
otherwise transfer the Package with respect to any patent claims
licensable by the Copyright Holder that are necessarily infringed by t
+he
Package. If you institute patent litigation (including a cross-claim o
+r
counterclaim) against any party alleging that the Package constitutes
direct or contributory patent infringement, then this Artistic License
to you shall terminate on the date that such litigation is filed.
Disclaimer of Warranty: THE PACKAGE IS PROVIDED BY THE COPYRIGHT HOLDE
+R
AND CONTRIBUTORS "AS IS' AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES
+.
THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE, OR NON-INFRINGEMENT ARE DISCLAIMED TO THE EXTENT PERMITTED BY
YOUR LOCAL LAW. UNLESS REQUIRED BY LAW, NO COPYRIGHT HOLDER OR
CONTRIBUTOR WILL BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES ARISING IN ANY WAY OUT OF THE USE OF THE PACKAGE
+,
EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
=cut
1;