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# -*- perl -*- |
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# Author: Slaven Rezic |
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# Copyright (C) 2020,2022 Slaven Rezic. All rights reserved. |
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# This package is free software; you can redistribute it and/or |
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# modify it under the same terms as Perl itself. |
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# |
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# Mail: slaven@rezic.de |
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# WWW: https://github.com/eserte/Doit |
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# |
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package Doit::Pip; # Convention: all commands here should be prefixed with 'pip_' |
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use strict; |
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use warnings; |
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our $VERSION = '0.012'; |
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use Doit::Log; |
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sub new { bless {}, shift } |
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sub functions { qw(pip_install_packages pip_missing_packages can_pip) } |
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sub can_pip { |
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my($self) = @_; |
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$self->which('pip3') ? 1 : 0; |
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} |
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sub pip_install_packages { |
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my($self, @packages) = @_; |
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my @missing_packages = $self->pip_missing_packages(@packages); |
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if (@missing_packages) { |
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$self->system('pip3', 'install', @missing_packages); |
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} |
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@missing_packages; |
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} |
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sub pip_missing_packages { |
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my($self, @packages) = @_; |
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my @missing_packages; |
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if (0) { # XXX this is only possible with newer pip versions --- how new? |
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my $stderr; |
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eval { |
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$self->info_open3({ |
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quiet => 1, |
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errref => \$stderr, |
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}, 'pip3', 'show', '-q', '--no-color', @packages); # note: --no-color is only available in newer pip versions |
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}; |
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if ($stderr) { |
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if ($stderr =~ m{\QWARNING: Package(s) not found:\E\s+(.+)}) { |
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@missing_packages = split /,\s+/, $1; |
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} else { |
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error "Unable to parse stderr output of 'pip3 show': '$stderr'"; |
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} |
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} |
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} else { |
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if (0) { # XXX this solution would be straightforward --- unfortunately some pip3 versions do not exit with a non-zero status for missing packages |
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for my $package (@packages) { |
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if (!eval { $self->info_open3({quiet=>1}, 'pip3', 'show', '-q', $package); 1 }) { |
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push @missing_packages, $package; |
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} |
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} |
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} else { |
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my %seen_package; |
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for my $line (do { no warnings "uninitialized"; split /\n/, eval { $self->info_open3({quiet=>1}, 'pip3', 'show', @packages) } }) { |
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if ($line =~ /^Name:\s+(\S+)/) { |
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$seen_package{$1}++; |
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} |
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} |
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for my $package (@packages) { |
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if (!$seen_package{$package}) { |
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push @missing_packages, $package; |
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} |
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} |
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} |
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} |
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@missing_packages; |
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} |
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1; |
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__END__ |