support/scripts/scancpan

   1 #!/usr/bin/env perl
   2
   3 # This chunk of stuff was generated by App::FatPacker. To find the original
   4 # file's code, look for the end of this BEGIN block or the string 'FATPACK'
   5 BEGIN {
   6 my %fatpacked;
   7
   8 $fatpacked{"MetaCPAN/API/Tiny.pm"} = <<'METACPAN_API_TINY';
   9   package MetaCPAN::API::Tiny;
  10   {
  11     $MetaCPAN::API::Tiny::VERSION = '1.131730';
  12   }
  13   use strict;
  14   use warnings;
  15   # ABSTRACT: A Tiny API client for MetaCPAN
  16
  17   use Carp;
  18   use JSON::PP 'encode_json', 'decode_json';
  19   use HTTP::Tiny;
  20
  21
  22   sub new {
  23       my ($class, @args) = @_;
  24
  25       $#_ % 2 == 0
  26           or croak 'Arguments must be provided as name/value pairs';
  27
  28       my %params = @args;
  29
  30       die 'ua_args must be an array reference'
  31           if $params{ua_args} && ref($params{ua_args}) ne 'ARRAY';
  32
  33       my $self = +{
  34           base_url => $params{base_url} || 'http://api.metacpan.org/v0',
  35           ua => $params{ua} || HTTP::Tiny->new(
  36               $params{ua_args}
  37                   ? @{$params{ua_args}}
  38                   : (agent => 'MetaCPAN::API::Tiny/'
  39                       . ($MetaCPAN::API::VERSION || 'xx'))),
  40       };
  41
  42       return bless($self, $class);
  43   }
  44
  45   sub _build_extra_params {
  46       my $self = shift;
  47
  48       @_ % 2 == 0
  49           or croak 'Incorrect number of params, must be key/value';
  50
  51       my %extra = @_;
  52       my $ua = $self->{ua};
  53
  54       foreach my $key (keys %extra)
  55       {
  56           # The implementation in HTTP::Tiny uses + instead of %20, fix that
  57           $extra{$key} = $ua->_uri_escape($extra{$key});
  58           $extra{$key} =~ s/\+/%20/g;
  59       }
  60
  61       my $params = join '&', map { "$_=" . $extra{$_} } sort keys %extra;
  62
  63       return $params;
  64   }
  65
  66
  67   # /source/{author}/{release}/{path}
  68   sub source {
  69       my $self  = shift;
  70       my %opts  = @_ ? @_ : ();
  71       my $url   = '';
  72       my $error = "Provide 'author' and 'release' and 'path'";
  73
  74       %opts or croak $error;
  75
  76       if (
  77           defined ( my $author  = $opts{'author'}  ) &&
  78           defined ( my $release = $opts{'release'} ) &&
  79           defined ( my $path    = $opts{'path'}    )
  80         ) {
  81           $url = "source/$author/$release/$path";
  82       } else {
  83           croak $error;
  84       }
  85
  86       $url = $self->{base_url} . "/$url";
  87
  88       my $result = $self->{ua}->get($url);
  89       $result->{'success'}
  90           or croak "Failed to fetch '$url': " . $result->{'reason'};
  91
  92       return $result->{'content'};
  93   }
  94
  95
  96   # /release/{distribution}
  97   # /release/{author}/{release}
  98   sub release {
  99       my $self  = shift;
 100       my %opts  = @_ ? @_ : ();
 101       my $url   = '';
 102       my $error = "Either provide 'distribution', or 'author' and 'release', " .
 103                   "or 'search'";
 104
 105       %opts or croak $error;
 106
 107       my %extra_opts = ();
 108
 109       if ( defined ( my $dist = $opts{'distribution'} ) ) {
 110           $url = "release/$dist";
 111       } elsif (
 112           defined ( my $author  = $opts{'author'}  ) &&
 113           defined ( my $release = $opts{'release'} )
 114         ) {
 115           $url = "release/$author/$release";
 116       } elsif ( defined ( my $search_opts = $opts{'search'} ) ) {
 117           ref $search_opts && ref $search_opts eq 'HASH'
 118               or croak $error;
 119
 120           %extra_opts = %{$search_opts};
 121           $url        = 'release/_search';
 122       } else {
 123           croak $error;
 124       }
 125
 126       return $self->fetch( $url, %extra_opts );
 127   }
 128
 129
 130   # /pod/{module}
 131   # /pod/{author}/{release}/{path}
 132   sub pod {
 133       my $self  = shift;
 134       my %opts  = @_ ? @_ : ();
 135       my $url   = '';
 136       my $error = "Either provide 'module' or 'author and 'release' and 'path'";
 137
 138       %opts or croak $error;
 139
 140       if ( defined ( my $module = $opts{'module'} ) ) {
 141           $url = "pod/$module";
 142       } elsif (
 143           defined ( my $author  = $opts{'author'}  ) &&
 144           defined ( my $release = $opts{'release'} ) &&
 145           defined ( my $path    = $opts{'path'}    )
 146         ) {
 147           $url = "pod/$author/$release/$path";
 148       } else {
 149           croak $error;
 150       }
 151
 152       # check content-type
 153       my %extra = ();
 154       if ( defined ( my $type = $opts{'content-type'} ) ) {
 155           $type =~ m{^ text/ (?: html|plain|x-pod|x-markdown ) $}x
 156               or croak 'Incorrect content-type provided';
 157
 158           $extra{headers}{'content-type'} = $type;
 159       }
 160
 161       $url = $self->{base_url}. "/$url";
 162
 163       my $result = $self->{ua}->get( $url, \%extra );
 164       $result->{'success'}
 165           or croak "Failed to fetch '$url': " . $result->{'reason'};
 166
 167       return $result->{'content'};
 168   }
 169
 170
 171   # /module/{module}
 172   sub module {
 173       my $self = shift;
 174       my $name = shift;
 175
 176       $name or croak 'Please provide a module name';
 177
 178       return $self->fetch("module/$name");
 179   }
 180
 181
 182   # file() is a synonym of module
 183   sub file { goto &module }
 184
 185
 186   # /author/{author}
 187   sub author {
 188       my $self = shift;
 189       my ( $pause_id, $url, %extra_opts );
 190
 191       if ( @_ == 1 ) {
 192           $url = 'author/' . shift;
 193       } elsif ( @_ == 2 ) {
 194           my %opts = @_;
 195
 196           if ( defined $opts{'pauseid'} ) {
 197               $url = "author/" . $opts{'pauseid'};
 198           } elsif ( defined $opts{'search'} ) {
 199               my $search_opts = $opts{'search'};
 200
 201               ref $search_opts && ref $search_opts eq 'HASH'
 202                   or croak "'search' key must be hashref";
 203
 204               %extra_opts = %{$search_opts};
 205               $url        = 'author/_search';
 206           } else {
 207               croak 'Unknown option given';
 208           }
 209       } else {
 210           croak 'Please provide an author PAUSEID or a "search"';
 211       }
 212
 213       return $self->fetch( $url, %extra_opts );
 214   }
 215
 216
 217
 218   sub fetch {
 219       my $self    = shift;
 220       my $url     = shift;
 221       my $extra   = $self->_build_extra_params(@_);
 222       my $base    = $self->{base_url};
 223       my $req_url = $extra ? "$base/$url?$extra" : "$base/$url";
 224
 225       my $result  = $self->{ua}->get($req_url);
 226       return $self->_decode_result( $result, $req_url );
 227   }
 228
 229
 230   sub post {
 231       my $self  = shift;
 232       my $url   = shift;
 233       my $query = shift;
 234       my $base  = $self->{base_url};
 235
 236       defined $url
 237           or croak 'First argument of URL must be provided';
 238
 239       ref $query and ref $query eq 'HASH'
 240           or croak 'Second argument of query hashref must be provided';
 241
 242       my $query_json = encode_json( $query );
 243       my $result     = $self->{ua}->request(
 244           'POST',
 245           "$base/$url",
 246           {
 247               headers => { 'Content-Type' => 'application/json' },
 248               content => $query_json,
 249           }
 250       );
 251
 252       return $self->_decode_result( $result, $url, $query_json );
 253   }
 254
 255   sub _decode_result {
 256       my $self = shift;
 257       my ( $result, $url, $original ) = @_;
 258       my $decoded_result;
 259
 260       ref $result and ref $result eq 'HASH'
 261           or croak 'First argument must be hashref';
 262
 263       defined $url
 264           or croak 'Second argument of a URL must be provided';
 265
 266       if ( defined ( my $success = $result->{'success'} ) ) {
 267           my $reason = $result->{'reason'} || '';
 268           $reason .= ( defined $original ? " (request: $original)" : '' );
 269
 270           $success or croak "Failed to fetch '$url': $reason";
 271       } else {
 272           croak 'Missing success in return value';
 273       }
 274
 275       defined ( my $content = $result->{'content'} )
 276           or croak 'Missing content in return value';
 277
 278       eval { $decoded_result = decode_json $content; 1 }
 279       or do { croak "Couldn't decode '$content': $@" };
 280
 281       return $decoded_result;
 282   }
 283
 284   1;
 285
 286   __END__
 287
 288   =pod
 289
 290   =head1 NAME
 291
 292   MetaCPAN::API::Tiny - A Tiny API client for MetaCPAN
 293
 294   =head1 VERSION
 295
 296   version 1.131730
 297
 298   =head1 DESCRIPTION
 299
 300   This is the Tiny version of L<MetaCPAN::API>. It implements a compatible API
 301   with a few notable exceptions:
 302
 303   =over 4
 304
 305   =item Attributes are direct hash access
 306
 307   The attributes defined using Mo(o|u)se are now accessed via the blessed hash
 308   directly. There are no accessors defined to access this elements.
 309
 310   =item Exception handling
 311
 312   Instead of using Try::Tiny, raw evals are used. This could potentially cause
 313   issues, so just be aware.
 314
 315   =item Testing
 316
 317   Test::Fatal was replaced with an eval implementation of exception().
 318   Test::TinyMocker usage is retained, but may be absorbed since it is pure perl
 319
 320   =back
 321
 322   =head1 CLASS_METHODS
 323
 324   =head2 new
 325
 326   new is the constructor for MetaCPAN::API::Tiny. In the non-tiny version of this
 327   module, this is provided via Any::Moose built from the attributes defined. In
 328   the tiny version, we define our own constructor. It takes the same arguments
 329   and provides similar checks to MetaCPAN::API with regards to arguments passed.
 330
 331   =head1 PUBLIC_METHODS
 332
 333   =head2 source
 334
 335       my $source = $mcpan->source(
 336           author  => 'DOY',
 337           release => 'Moose-2.0201',
 338           path    => 'lib/Moose.pm',
 339       );
 340
 341   Searches MetaCPAN for a module or a specific release and returns the plain source.
 342
 343   =head2 release
 344
 345       my $result = $mcpan->release( distribution => 'Moose' );
 346
 347       # or
 348       my $result = $mcpan->release( author => 'DOY', release => 'Moose-2.0001' );
 349
 350   Searches MetaCPAN for a dist.
 351
 352   You can do complex searches using 'search' parameter:
 353
 354       # example lifted from MetaCPAN docs
 355       my $result = $mcpan->release(
 356           search => {
 357               author => "OALDERS AND ",
 358               filter => "status:latest",
 359               fields => "name",
 360               size   => 1,
 361           },
 362       );
 363
 364   =head2 pod
 365
 366       my $result = $mcpan->pod( module => 'Moose' );
 367
 368       # or
 369       my $result = $mcpan->pod(
 370           author  => 'DOY',
 371           release => 'Moose-2.0201',
 372           path    => 'lib/Moose.pm',
 373       );
 374
 375   Searches MetaCPAN for a module or a specific release and returns the POD.
 376
 377   =head2 module
 378
 379       my $result = $mcpan->module('MetaCPAN::API');
 380
 381   Searches MetaCPAN and returns a module's ".pm" file.
 382
 383   =head2 file
 384
 385   A synonym of L</module>
 386
 387   =head2 author
 388
 389       my $result1 = $mcpan->author('XSAWYERX');
 390       my $result2 = $mcpan->author( pauseid => 'XSAWYERX' );
 391
 392   Searches MetaCPAN for a specific author.
 393
 394   You can do complex searches using 'search' parameter:
 395
 396       # example lifted from MetaCPAN docs
 397       my $result = $mcpan->author(
 398           search => {
 399               q    => 'profile.name:twitter',
 400               size => 1,
 401           },
 402       );
 403
 404   =head2 fetch
 405
 406       my $result = $mcpan->fetch('/release/distribution/Moose');
 407
 408       # with parameters
 409       my $more = $mcpan->fetch(
 410           '/release/distribution/Moose',
 411           param => 'value',
 412       );
 413
 414   This is a helper method for API implementations. It fetches a path from MetaCPAN, decodes the JSON from the content variable and returns it.
 415
 416   You don't really need to use it, but you can in case you want to write your own extension implementation to MetaCPAN::API.
 417
 418   It accepts an additional hash as "GET" parameters.
 419
 420   =head2 post
 421
 422       # /release&content={"query":{"match_all":{}},"filter":{"prefix":{"archive":"Cache-Cache-1.06"}}}
 423       my $result = $mcpan->post(
 424           'release',
 425           {
 426               query  => { match_all => {} },
 427               filter => { prefix => { archive => 'Cache-Cache-1.06' } },
 428           },
 429       );
 430
 431   The POST equivalent of the "fetch()" method. It gets the path and JSON request.
 432
 433   =head1 THANKS
 434
 435   Overall the tests and code were ripped directly from MetaCPAN::API and
 436   tiny-fied. A big thanks to Sawyer X for writing the original module.
 437
 438   =head1 AUTHOR
 439
 440   Nicholas R. Perez <nperez@cpan.org>
 441
 442   =head1 COPYRIGHT AND LICENSE
 443
 444   This software is copyright (c) 2013 by Nicholas R. Perez <nperez@cpan.org>.
 445
 446   This is free software; you can redistribute it and/or modify it under
 447   the same terms as the Perl 5 programming language system itself.
 448
 449   =cut
 450 METACPAN_API_TINY
 451
 452 s/^  //mg for values %fatpacked;
 453
 454 unshift @INC, sub {
 455   if (my $fat = $fatpacked{$_[1]}) {
 456     if ($] < 5.008) {
 457       return sub {
 458         return 0 unless length $fat;
 459         $fat =~ s/^([^\n]*\n?)//;
 460         $_ = $1;
 461         return 1;
 462       };
 463     }
 464     open my $fh, '<', \$fat
 465       or die "FatPacker error loading $_[1] (could be a perl installation issue?)";
 466     return $fh;
 467   }
 468   return
 469 };
 470
 471 } # END OF FATPACK CODE
 472
 473
 474 use 5.020;      # same major version as target perl
 475 use strict;
 476 use warnings;
 477 use Fatal qw(open close);
 478
 479 use Getopt::Long;
 480 use Pod::Usage;
 481 use File::Basename;
 482 use Module::CoreList;
 483 use HTTP::Tiny;
 484 use Safe;
 485 use MetaCPAN::API::Tiny;
 486
 487 my ($help, $man, $quiet, $force, $recommend, $test, $host);
 488 my $target = 1;
 489 GetOptions( 'help|?' => \$help,
 490             'man' => \$man,
 491             'quiet|q' => \$quiet,
 492             'force|f' => \$force,
 493             'host!' => \$host,
 494             'target!' => \$target,
 495             'recommend' => \$recommend,
 496             'test' => \$test
 497 ) or pod2usage(-exitval => 1);
 498 pod2usage(-exitval => 0) if $help;
 499 pod2usage(-exitval => 0, -verbose => 2) if $man;
 500 pod2usage(-exitval => 1) if scalar @ARGV == 0;
 501
 502 my %dist;               # name -> metacpan data
 503 my %need_target;        # name -> 1 if target package is needed
 504 my %need_host;          # name -> 1 if host package is needed
 505 my %need_dlopen;        # name -> 1 if requires dynamic library
 506 my %deps_build;         # name -> list of host dependencies
 507 my %deps_runtime;       # name -> list of target dependencies
 508 my %license_files;      # name -> list of license files
 509 my %checksum;           # author -> list of checksum
 510 my $mcpan = MetaCPAN::API::Tiny->new();
 511 my $ua = HTTP::Tiny->new();
 512
 513 sub get_checksum {
 514     my ($url) = @_;
 515     my($path) = $url =~ m|^[^:/?#]+://[^/?#]*([^?#]*)|;
 516     my($basename, $dirname) = fileparse( $path );
 517     unless ($checksum{$dirname}) {
 518         my $response = $ua->get(qq{http://cpan.metacpan.org${dirname}CHECKSUMS});
 519         $checksum{$dirname} = $response->{content};
 520     }
 521     my $chksum = Safe->new->reval($checksum{$dirname});
 522     return $chksum->{$basename}, $basename;
 523 }
 524
 525 sub get_manifest {
 526     my ($author, $distname, $version) = @_;
 527     my $url = qq{http://api.metacpan.org/source/${author}/${distname}-${version}/MANIFEST};
 528     my $response = $ua->get($url);
 529     return $response->{content};
 530 }
 531
 532 sub is_xs {
 533     my ($manifest) = @_;
 534     # This heuristic determines if a module is a native extension, by searching
 535     # some file extension types in the MANIFEST of the distribution.
 536     # It was inspired by http://deps.cpantesters.org/static/purity.html
 537     return $manifest =~ m/\.(swg|xs|c|h|i)\n/;
 538 }
 539
 540 sub find_license_files {
 541     my ($manifest) = @_;
 542     my @license_files;
 543     foreach (split /\n/, $manifest) {
 544         next if m|/|;
 545         push @license_files, $_ if m/(ARTISTIC|COPYING|COPYRIGHT|LICENSE)/i;
 546     }
 547     return \@license_files;
 548 }
 549
 550 sub fetch {
 551     my ($name, $need_target, $need_host) = @_;
 552     $need_target{$name} = $need_target if $need_target;
 553     $need_host{$name} = $need_host if $need_host;
 554     unless ($dist{$name}) {
 555         say qq{fetch ${name}} unless $quiet;
 556         my $result = $mcpan->release( distribution => $name );
 557         $dist{$name} = $result;
 558         my $manifest = get_manifest( $result->{author}, $name, $result->{version} );
 559         $need_dlopen{$name} = is_xs( $manifest );
 560         $license_files{$name} = find_license_files( $manifest );
 561         my %build = ();
 562         my %runtime = ();
 563         my $mb;
 564         foreach my $dep (@{$result->{dependency}}) {
 565             my $modname = ${$dep}{module};
 566             $mb = 1 if $modname eq q{Module::Build};
 567             # Module::Build has a special treatment, because it is a core module,
 568             # but some module require a very recent version of it
 569             next if $modname eq q{perl};
 570             next if $modname =~ m|^Alien|;
 571             next if $modname =~ m|^Win32|;
 572             next if !$test && $modname =~ m|^Test|;
 573             next if Module::CoreList::is_core( $modname, undef, $] );
 574             # we could use the host Module::CoreList data, because host perl and
 575             # target perl have the same major version
 576             next if ${$dep}{phase} eq q{develop};
 577             next if !$test && ${$dep}{phase} eq q{test};
 578             next if !$recommend && ${$dep}{relationship} ne q{requires};
 579             my $distname = $mcpan->module( $modname )->{distribution};
 580             if (${$dep}{phase} eq q{runtime}) {
 581                 $runtime{$distname} = 1;
 582             }
 583             else { # configure, build
 584                 $build{$distname} = 1;
 585             }
 586         }
 587         $build{q{Module-Build}} = 1 if $mb;
 588         $deps_build{$name} = [keys %build];
 589         $deps_runtime{$name} = [keys %runtime];
 590         foreach my $distname (@{$deps_build{$name}}) {
 591             fetch( $distname, 0, 1 );
 592         }
 593         foreach my $distname (@{$deps_runtime{$name}}) {
 594             fetch( $distname, $need_target, $need_host );
 595             $need_dlopen{$name} ||= $need_dlopen{$distname};
 596         }
 597     }
 598     return;
 599 }
 600
 601 foreach my $distname (@ARGV) {
 602     # Command-line's distributions
 603     fetch( $distname, !!$target, !!$host );
 604 }
 605 say scalar keys %dist, q{ packages fetched.} unless $quiet;
 606
 607 # Buildroot package name: lowercase
 608 sub fsname {
 609     my $name = shift;
 610     return q{perl-} . lc $name;
 611 }
 612
 613 # Buildroot variable name: uppercase
 614 sub brname {
 615     my $name = shift;
 616     $name =~ s|-|_|g;
 617     return uc $name;
 618 }
 619
 620 while (my ($distname, $dist) = each %dist) {
 621     my $fsname = fsname( $distname );
 622     my $dirname = q{package/} . $fsname;
 623     my $cfgname = $dirname . q{/Config.in};
 624     my $mkname = $dirname . q{/} . $fsname . q{.mk};
 625     my $hashname = $dirname . q{/} . $fsname . q{.hash};
 626     my $brname = brname( $fsname );
 627     mkdir $dirname unless -d $dirname;
 628     if ($need_target{$distname} && ($force || !-f $cfgname)) {
 629         my $abstract = $dist->{abstract};
 630         my $homepage = $dist->{resources}->{homepage} || qq{https://metacpan.org/release/${distname}};
 631         say qq{write ${cfgname}} unless $quiet;
 632         open my $fh, q{>}, $cfgname;
 633         say {$fh} qq{config BR2_PACKAGE_${brname}};
 634         say {$fh} qq{\tbool "${fsname}"};
 635         say {$fh} qq{\tdepends on !BR2_STATIC_LIBS} if $need_dlopen{$distname};
 636         foreach my $dep (sort @{$deps_runtime{$distname}}) {
 637             my $brdep = brname( fsname( $dep ) );
 638             say {$fh} qq{\tselect BR2_PACKAGE_${brdep}};
 639         }
 640         say {$fh} qq{\thelp};
 641         say {$fh} qq{\t  ${abstract}\n} if $abstract;
 642         say {$fh} qq{\t  ${homepage}};
 643         if ($need_dlopen{$distname}) {
 644             say {$fh} qq{\ncomment "${fsname} needs a toolchain w/ dynamic library"};
 645             say {$fh} qq{\tdepends on BR2_STATIC_LIBS};
 646         }
 647         close $fh;
 648     }
 649     if ($force || !-f $mkname) {
 650         my $version = $dist->{version};
 651         my($path) = $dist->{download_url} =~ m|^[^:/?#]+://[^/?#]*([^?#]*)|;
 652         # this URL contains only the scheme, auth and path parts (but no query and fragment parts)
 653         # the scheme is not used, because the job is done by the BR download infrastructure
 654         # the auth part is not used, because we use $(BR2_CPAN_MIRROR)
 655         my($filename, $directories, $suffix) = fileparse( $path, q{tar.gz}, q{tgz} );
 656         $directories =~ s|/$||;
 657         my $dependencies = join q{ }, qw( = perl ),
 658                                       map( { q{host-} . fsname( $_ ); } sort @{$deps_build{$distname}} ),
 659                                       map( { fsname( $_ ); } sort @{$deps_runtime{$distname}} );
 660         my $host_dependencies = join q{ }, qw( = ),
 661                                            map { q{host-} . fsname( $_ ); } sort( @{$deps_build{$distname}},
 662                                                                                   @{$deps_runtime{$distname}} );
 663         my $license = ref $dist->{license} eq 'ARRAY'
 664                     ? join q{ or }, @{$dist->{license}}
 665                     : $dist->{license};
 666         # BR requires license name as in http://spdx.org/licenses/
 667         $license =~ s|apache_2_0|Apache-2.0|;
 668         $license =~ s|artistic_2|Artistic-2.0|;
 669         $license =~ s|mit|MIT|;
 670         $license =~ s|openssl|OpenSSL|;
 671         $license =~ s|perl_5|Artistic or GPLv1+|;
 672         my $license_files = join q{ }, @{$license_files{$distname}};
 673         say qq{write ${mkname}} unless $quiet;
 674         open my $fh, q{>}, $mkname;
 675         say {$fh} qq{################################################################################};
 676         say {$fh} qq{#};
 677         say {$fh} qq{# ${fsname}};
 678         say {$fh} qq{#};
 679         say {$fh} qq{################################################################################};
 680         say {$fh} qq{};
 681         say {$fh} qq{${brname}_VERSION = ${version}};
 682         say {$fh} qq{${brname}_SOURCE = ${distname}-\$(${brname}_VERSION).${suffix}};
 683         say {$fh} qq{${brname}_SITE = \$(BR2_CPAN_MIRROR)${directories}};
 684         say {$fh} qq{${brname}_DEPENDENCIES ${dependencies}} if $need_target{$distname};
 685         say {$fh} qq{HOST_${brname}_DEPENDENCIES ${host_dependencies}} if $need_host{$distname};
 686         say {$fh} qq{${brname}_LICENSE = ${license}} if $license && $license ne q{unknown};
 687         say {$fh} qq{${brname}_LICENSE_FILES = ${license_files}} if $license_files;
 688         say {$fh} qq{};
 689         say {$fh} qq{\$(eval \$(perl-package))} if $need_target{$distname};
 690         say {$fh} qq{\$(eval \$(host-perl-package))} if $need_host{$distname};
 691         close $fh;
 692     }
 693     if ($force || !-f $hashname) {
 694         my($checksum, $filename) = get_checksum($dist->{download_url});
 695         my $md5 = $checksum->{md5};
 696         my $sha256 = $checksum->{sha256};
 697         say qq{write ${hashname}} unless $quiet;
 698         open my $fh, q{>}, $hashname;
 699         say {$fh} qq{# retrieved by scancpan from http://cpan.metacpan.org/};
 700         say {$fh} qq{md5    ${md5} ${filename}};
 701         say {$fh} qq{sha256 ${sha256} ${filename}};
 702         close $fh;
 703     }
 704 }
 705
 706 my %pkg;
 707 my $cfgname = q{package/Config.in};
 708 if (-f $cfgname) {
 709     open my $fh, q{<}, $cfgname;
 710     while (<$fh>) {
 711         chomp;
 712         $pkg{$_} = 1 if m|package/perl-|;
 713     }
 714     close $fh;
 715 }
 716
 717 foreach my $distname (keys %need_target) {
 718     my $fsname = fsname( $distname );
 719     $pkg{qq{\tsource "package/${fsname}/Config.in"}} = 1;
 720 }
 721
 722 say qq{${cfgname} must contain the following lines:};
 723 say join qq{\n}, sort keys %pkg;
 724
 725 __END__
 726
 727 =head1 NAME
 728
 729 support/scripts/scancpan Try-Tiny Moo
 730
 731 =head1 SYNOPSIS
 732
 733 curl -kL http://install.perlbrew.pl | bash
 734
 735 perlbrew install perl-5.18.2
 736
 737 supports/scripts/scancpan [options] [distname ...]
 738
 739  Options:
 740    -help
 741    -man
 742    -quiet
 743    -force
 744    -target/-notarget
 745    -host/-nohost
 746    -recommend
 747    -test
 748
 749 =head1 OPTIONS
 750
 751 =over 8
 752
 753 =item B<-help>
 754
 755 Prints a brief help message and exits.
 756
 757 =item B<-man>
 758
 759 Prints the manual page and exits.
 760
 761 =item B<-quiet>
 762
 763 Executes without output
 764
 765 =item B<-force>
 766
 767 Forces the overwriting of existing files.
 768
 769 =item B<-target/-notarget>
 770
 771 Switches package generation for the target variant (the default is C<-target>).
 772
 773 =item B<-host/-nohost>
 774
 775 Switches package generation for the host variant (the default is C<-nohost>).
 776
 777 =item B<-recommend>
 778
 779 Adds I<recommended> dependencies.
 780
 781 =item B<-test>
 782
 783 Adds dependencies for test.
 784
 785 =back
 786
 787 =head1 DESCRIPTION
 788
 789 This script creates templates of the Buildroot package files for all the
 790 Perl/CPAN distributions required by the specified distnames. The
 791 dependencies and metadata are fetched from https://metacpan.org/.
 792
 793 After running this script, it is necessary to check the generated files.
 794 You have to manually add the license files (PERL_FOO_LICENSE_FILES variable).
 795 For distributions that link against a target library, you have to add the
 796 buildroot package name for that library to the DEPENDENCIES variable.
 797
 798 See the Buildroot documentation for details on the usage of the Perl
 799 infrastructure.
 800
 801 The major version of the host perl must be aligned on the target one,
 802 in order to work with the right CoreList data.
 803
 804 =head1 LICENSE
 805
 806 Copyright (C) 2013-2014 by Francois Perrad <francois.perrad@gadz.org>
 807
 808 This program is free software; you can redistribute it and/or modify
 809 it under the terms of the GNU General Public License as published by
 810 the Free Software Foundation; either version 2 of the License, or
 811 (at your option) any later version.
 812
 813 This program is distributed in the hope that it will be useful,
 814 but WITHOUT ANY WARRANTY; without even the implied warranty of
 815 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 816 General Public License for more details.
 817
 818 You should have received a copy of the GNU General Public License
 819 along with this program; if not, write to the Free Software
 820 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 821
 822 This script is a part of Buildroot.
 823
 824 This script requires the module C<MetaCPAN::API::Tiny> (version 1.131730)
 825 which was included at the beginning of this file by the tool C<fatpack>.
 826
 827 See L<http://search.cpan.org/~nperez/MetaCPAN-API-Tiny-1.131730/>.
 828
 829 See L<http://search.cpan.org/search?query=App-FatPacker&mode=dist>.
 830
 831 These both libraries are free software and may be distributed under the same
 832 terms as perl itself.
 833
 834 And perl may be distributed under the terms of Artistic v1 or GPL v1 license.
 835
 836 =cut