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package PAR::Indexer; |
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69649
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use 5.006; |
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use strict; |
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use warnings; |
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use Carp qw/croak/; |
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250
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use File::Spec (); |
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use File::Path (); |
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use Cwd (); |
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3204
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use PAR::Dist (); |
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25131
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3364
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use ExtUtils::Manifest; |
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39659
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3
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3427
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require ExtUtils::MM; |
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require Exporter; |
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our @ISA = qw(Exporter); |
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our @EXPORT = (); |
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our %EXPORT_TAGS = ( |
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all => [ |
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qw(scan_par_for_packages scan_par_for_scripts dependencies_from_meta_yml) |
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], |
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); |
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our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } ); |
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our $VERSION = '0.91'; |
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26
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=head1 NAME |
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28
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PAR::Indexer - Scan a PAR distro for packages and scripts |
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30
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=head1 SYNOPSIS |
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32
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use PAR::Indexer qw(scan_par_for_packages scan_par_for_scripts dependencies_from_meta_yml); |
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my $pkgs_hash = scan_par_for_packages($parfile); |
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my $scripts_hash = scan_par_for_scripts($parfile); |
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36
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my $dependencies = dependencies_from_meta_yml(\%meta_yml_hash); |
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38
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=head1 DESCRIPTION |
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40
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This module contains code for scanning a PAR distribution for |
41
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packages and scripts. The code was adapted from the PAUSE indexer. |
42
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43
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This module is used by PAR::Repository for injection of new PAR |
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distributions. |
45
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46
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=head2 EXPORT |
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48
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None by default, but you can choose to export subroutines |
49
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with the typical C semantics. |
50
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51
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=head1 FUNCTIONS |
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53
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=cut |
54
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55
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=head2 scan_par_for_packages |
56
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57
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First argument must be the path and file name of a PAR |
58
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distribution. Scans that distribution for .pm files and scans |
59
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those for packages and versions. Returns a hash of |
60
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the package names as keys and hash refs as values. The hashes contain |
61
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the path to the file in the PAR as the key "file" and (if found) |
62
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the version of the package is the key "version". |
63
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64
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Returns undef on error. |
65
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66
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(The structure returned should be exactly what you get when you |
67
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transform the C section of a F file |
68
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into a Perl data structure using a YAML reader.) |
69
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70
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=cut |
71
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72
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sub scan_par_for_packages { |
73
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1
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1
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1
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788
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my $par = shift; |
74
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75
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1
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11119
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my $old_path = Cwd::cwd(); |
76
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77
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1
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225
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my (undef, $tmpdir) = PAR::Dist::_unzip_to_tmpdir(dist => $par); |
78
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1
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103616
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chdir($tmpdir); |
79
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1
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9
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my @pmfiles = grep { /\.pm$/i } keys %{ExtUtils::Manifest::manifind()}; |
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4
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859
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1
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11
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80
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81
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1
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7
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my %pkg; |
82
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1
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4
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foreach my $pmfile (@pmfiles) { |
83
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2
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17
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my $hash = _parse_packages_from_pm($pmfile); |
84
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2
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50
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8
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next if not defined $hash; |
85
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2
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10
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foreach my $namespace (keys %$hash) { |
86
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3
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7
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my $main_ns = $pkg{$namespace}; |
87
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3
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5
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my $this_pm = $hash->{$namespace}; |
88
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3
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0
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33
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14
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if (not defined $main_ns->{version} or $main_ns->{version} eq 'undef' |
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0
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0
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33
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89
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or ( |
90
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defined $this_pm->{version} |
91
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and $this_pm->{version} ne 'undef' |
92
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and $main_ns->{version} < $this_pm->{version}) |
93
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) { |
94
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3
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15
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$pkg{$namespace} = $this_pm; |
95
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} |
96
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} |
97
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} |
98
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99
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1
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33
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chdir($old_path); |
100
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1
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1727
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File::Path::rmtree([$tmpdir]); |
101
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1
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12
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return \%pkg; |
102
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} |
103
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104
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105
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sub _parse_packages_from_pm { |
106
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2
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2
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5
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my $file = shift; |
107
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2
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2
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my %pkg; |
108
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2
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50
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104
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open my $fh, '<', $file or return undef; |
109
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110
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# stealing from PAUSE indexer. |
111
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2
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15
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local $/ = "\n"; |
112
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2
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3
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my $inpod = 0; |
113
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2
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35
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PLINE: while (<$fh>) { |
114
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512
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555
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chomp; |
115
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512
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654
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my($pline) = $_; |
116
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512
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100
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1242
|
$inpod = $pline =~ /^=(?!cut)/ ? 1 : $pline =~ /^=cut/ ? 0 : $inpod; |
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100
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117
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512
|
100
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100
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1837
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next if $inpod or substr($pline,0,4) eq "=cut"; |
118
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119
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300
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387
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$pline =~ s/\#.*//; |
120
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300
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100
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918
|
next if $pline =~ /^\s*$/; |
121
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243
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50
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499
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last PLINE if $pline =~ /\b__(END|DATA)__\b/; |
122
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123
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243
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234
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my $pkg; |
124
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243
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100
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1701
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if ( |
125
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$pline =~ m{ |
126
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(.*) |
127
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\bpackage\s+ |
128
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([\w\:\']+) |
129
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\s* |
130
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( $ | [\}\;] ) |
131
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}x) { |
132
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3
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8
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$pkg = $2; |
133
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} |
134
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135
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243
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100
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|
748
|
if ($pkg) { |
136
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# Found something |
137
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138
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# from package |
139
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3
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6
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$pkg =~ s/\'/::/; |
140
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3
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50
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11
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next PLINE unless $pkg =~ /^[A-Za-z]/; |
141
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3
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50
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13
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next PLINE unless $pkg =~ /\w$/; |
142
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3
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50
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9
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next PLINE if $pkg eq "main"; |
143
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3
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26
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$pkg{$pkg}{file} = $file; |
144
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3
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66
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my $version = MM->parse_version($file); |
145
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3
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50
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5221
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$pkg{$pkg}{version} = $version if defined $version; |
146
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} |
147
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} |
148
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149
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2
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24
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close $fh; |
150
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2
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14
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return \%pkg; |
151
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} |
152
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153
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154
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=head2 scan_par_for_scripts |
155
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|
156
|
|
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|
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First argument must be the path and file name of a PAR |
157
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distribution. Scans that distribution for executable files |
158
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and scans |
159
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those for versions. Returns a hash of |
160
|
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|
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|
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the script names as keys and hash refs as values. The hashes contain |
161
|
|
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|
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the path to the file in the PAR as the key "file" and (if found) |
162
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|
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the version of the script as the key "version". |
163
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164
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Returns undef on error. |
165
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166
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=cut |
167
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168
|
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sub scan_par_for_scripts { |
169
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0
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0
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1
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0
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my $par = shift; |
170
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171
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0
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0
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my $old_path = Cwd::cwd(); |
172
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173
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0
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0
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my (undef, $tmpdir) = PAR::Dist::_unzip_to_tmpdir(dist => $par); |
174
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0
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0
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chdir($tmpdir); |
175
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0
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0
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0
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my @scripts = grep { /^script\/(?!\.)/i or /^bin\/(?!\.)/i } |
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0
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0
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176
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0
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0
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keys %{ExtUtils::Manifest::manifind()}; |
177
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178
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0
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0
|
my %scr; |
179
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0
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0
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foreach my $script (@scripts) { |
180
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0
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0
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(undef, undef, my $scriptname) = File::Spec->splitpath($script); |
181
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182
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0
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0
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my $version = MM->parse_version($script); |
183
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0
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0
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0
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0
|
if ( not defined $scr{$scriptname}{version} |
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0
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184
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or (defined $version and $scr{$scriptname}{version} < $version) ) |
185
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{ |
186
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0
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0
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$scr{$scriptname} = { |
187
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file => $script, |
188
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version => $version, |
189
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}; |
190
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} |
191
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} |
192
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193
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0
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0
|
chdir($old_path); |
194
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0
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0
|
File::Path::rmtree([$tmpdir]); |
195
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0
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0
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return \%scr; |
196
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} |
197
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198
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199
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|
=head2 dependencies_from_meta_yml |
200
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201
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Determine the dependencies declared in F. Expects |
202
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a reference to a hash containing the parsed YAML tree as |
203
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first argument. |
204
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205
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Returns essentially the merged C, C, |
206
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and C hashes from the F. The order of precedence |
207
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|
|
is C< build_requires > configure_requires>>. If none |
208
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of the three sections is found, the function returns false. If any one of |
209
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|
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them was found (even if empty), a hash reference will be returned. |
210
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211
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=cut |
212
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213
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|
|
|
sub dependencies_from_meta_yml { |
214
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10
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|
10
|
1
|
5993
|
my $meta = shift; |
215
|
10
|
100
|
66
|
|
|
56
|
return() unless defined $meta and ref($meta) eq 'HASH'; |
216
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|
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|
|
|
|
|
217
|
9
|
100
|
66
|
|
|
40
|
return() if not exists $meta->{requires} |
|
|
|
66
|
|
|
|
|
218
|
|
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|
|
and not exists $meta->{build_requires} |
219
|
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|
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|
|
and not exists $meta->{configure_requires}; |
220
|
|
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221
|
8
|
|
|
|
|
13
|
my $req = {}; |
222
|
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|
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|
|
|
223
|
8
|
|
|
|
|
13
|
foreach my $source (qw(requires build_requires configure_requires)) { |
224
|
|
|
|
|
|
|
next |
225
|
24
|
100
|
66
|
|
|
90
|
if not exists $meta->{$source} or not ref($meta->{$source}) eq 'HASH'; |
226
|
15
|
|
|
|
|
20
|
my $this_req = $meta->{$source}; |
227
|
|
|
|
|
|
|
|
228
|
15
|
|
|
|
|
36
|
foreach my $module (keys %$this_req) { |
229
|
14
|
100
|
|
|
|
68
|
$req->{$module} = $this_req->{$module} |
230
|
|
|
|
|
|
|
if not exists $req->{$module}; |
231
|
|
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|
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|
|
} |
232
|
|
|
|
|
|
|
} |
233
|
|
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|
|
|
|
|
234
|
8
|
|
|
|
|
21
|
return $req; |
235
|
|
|
|
|
|
|
} |
236
|
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|
237
|
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|
|
1; |
238
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|
|
__END__ |