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dependencies.pl
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dependencies.pl
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#!/usr/bin/perl
use strict;
use warnings;
use 5.010;
use lib 'lib';
use Data::Dumper;
use MetaCPAN::API;
use Task::DWIM;
use JSON qw(to_json from_json);
use File::Slurp qw(read_file write_file);
use Getopt::Long qw(GetOptions);
use Try::Tiny;
my %opt;
GetOptions(\%opt, 'update') or die;
my $filename = 'cpan.json';
my $data;
if (-e $filename) {
$data = from_json scalar read_file $filename;
}
my $mcpan = MetaCPAN::API->new;
#my %modules = Task::DWIM::get_modules();
my %modules = (
'Test::More' => 0,
);
foreach my $name (sort keys %modules) {
next if $data->{modules}{$name} and not $opt{update}; #already collected
process_module($name);
#my $module = $mcpan->module( $name );
#my $dist = $mcpan->release( distribution => $module->{distribution} );
#say "$module->{distribution} $module->{version}";
#foreach my $dependency (@{ $dist->{dependency} }) {
# say " $dependency->{module} $dependency->{version}"
#}
#print Dumper $dist;
$data->{modules}{$name} = 2;
}
write_file $filename, to_json $data, {pretty => 1};
# Convert the modules.txt to some other format (JSON or YAML ?)
# list of module => version
# list of module => distribution
# in the end we actually install distributions, so we probably
# need a list of those with version numbers and full path
# we would also need a dependency mapping so we know the order of installation
sub process_distro {
my ($name) = @_;
return if exists $data->{distros}{$name};
say STDERR "Processing distro $name";
try {
#my $r = $mcpan->fetch( 'release/_search',
# q => 'distribution:Test-Simple AND status:latest',
# size => 1,
# fields => 'distribution,dependency,version,dowload_url', # license,archive
#);
#$data->{distros}{$name} = $r->{hits}{hits}[0]{fields};
my $r = $mcpan->release( distribution => $name );
for my $field (qw(distribution dependency version dowload_url)) { # license,archive
$data->{distros}{$name}{$field} = $r->{$field};
}
} catch {
warn "Exception: $_";
};
return if not $data->{distros}{$name};
foreach my $dep (@{ $data->{distros}{$name}{dependency} }) {
process_module($dep->{module});
}
return;
}
sub process_module {
my ($name) = @_;
return if exists $data->{modules}{ $name };
say STDERR "Processing module $name";
try {
my $r = $mcpan->module( $name );
for my $field (qw(version distribution)) {
#if (not defined $r->{$field}) {
# die Dumper $r;
#}
$data->{modules}{$name}{$field} = $r->{$field};
}
} catch {
warn "Exception: $_";
};
return if not $data->{modules}{$name};
process_distro($data->{modules}{$name}{distribution});
return;
}