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#!/usr/bin/env perl |
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637
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use strict; |
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use warnings; |
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1122
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5
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my @paths = ( |
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"/etc/dispatch.conf", |
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"/etc/dispatch", |
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); |
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10
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push @paths => "$ENV{HOME}/.dispatch.conf" |
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unless $ENV{SUDO_USER} || $ENV{USER} eq 'root'; |
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13
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App::Dispatch->new(@paths)->dispatch(@ARGV); |
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BEGIN { |
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package App::Dispatch; |
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0
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sub programs { shift->{programs} } |
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6
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0
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22
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sub config { shift->{config} } |
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22
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sub new { |
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986
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my $class = shift; |
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my $self = bless { |
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config => {}, |
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programs => {}, |
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} => $class; |
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2
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$self->read_config($_) for @_; |
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32
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2
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return $self; |
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} |
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35
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sub read_config { |
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0
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my $self = shift; |
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my ($file) = @_; |
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100
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unless ( -e $file ) { |
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$self->config->{$file} = "No such file or directory: '$file'."; |
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return; |
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} |
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2
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$self->config->{$file} = 1; |
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2
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100
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if ( -d $file ) { |
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1
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opendir( my $dir, $file ) || die "Failed to open '$file': $!\n"; |
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1
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$self->read_config("$file/$_") for sort grep { $_ !~ m/^\./ } readdir($dir); |
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1
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close($dir); |
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1
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return; |
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} |
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51
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1
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50
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open( my $fh, '<', $file ) || die "Failed to open '$file': $!\n"; |
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1
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2
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my $program; |
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1
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2
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my $ln = 0; |
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1
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while ( my $line = <$fh> ) { |
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9
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$ln++; |
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9
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chomp($line); |
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9
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100
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next unless $line; |
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7
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100
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next if $line =~ m/^#/; |
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61
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5
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100
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if ( $line =~ m/^\s*\[([a-zA-Z0-9_]+)\]\s*$/i ) { |
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1
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$program = $1; |
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1
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50
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3
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$self->programs->{$program} ||= {}; |
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1
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4
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next; |
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} |
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67
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4
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50
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if ( !$program ) { |
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0
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die "Error in '$file', line $ln: '$line'.\nItem is not under a program specification.\n"; |
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} |
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71
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4
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50
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if ( $line =~ m/^\s*([a-zA-Z0-9_]+)\s*=\s*(\S+)\s*$/ ) { |
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4
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$self->programs->{$program}->{$1} = $2; |
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4
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50
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33
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next unless $1 eq 'SYSTEM' && $file ne '/etc/dispatch.conf'; |
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0
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die "SYSTEM alias can only be specified in /etc/dispatch.conf.\n"; |
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} |
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0
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die "'$file' line $ln not valid: '$line'\n"; |
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} |
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1
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close($fh); |
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} |
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83
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sub dispatch { |
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1
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1
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1
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2
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my $self = shift; |
85
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1
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2
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my ( $program, @argv ) = @_; |
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87
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1
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50
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30
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die "No program specified\n" unless $program; |
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89
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0
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0
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return $self->debug if $program eq 'DEBUG'; |
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91
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0
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my @cascade; |
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93
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0
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0
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unshift @cascade => shift @argv while @argv && $argv[0] ne '--'; |
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0
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shift @argv; |
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96
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0
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0
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@cascade = ( 'DEFAULT', 'SYSTEM' ) unless @cascade; |
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98
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0
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0
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my $conf = $self->programs->{$program} || {}; |
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100
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0
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my $run; |
101
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0
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for my $item (@cascade) { |
102
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0
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if ( $item eq 'ENV' ) { |
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0
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0
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103
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0
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$run = $program; |
104
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} |
105
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elsif ( my $alias = $conf->{$item} ) { |
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0
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0
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next unless -x $alias; |
107
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0
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$run = $alias; |
108
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} |
109
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elsif ( -x $item ) { |
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0
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$run = $item; |
111
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} |
112
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} |
113
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0
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0
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exec( $run, @argv ) if $run; |
114
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115
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0
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print STDERR "Could not find valid '$program' to run.\n"; |
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0
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print STDERR "Searched: " . join( ', ', @cascade ) . "\n"; |
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0
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print STDERR "'$program' config: "; |
118
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0
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0
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if ( keys %$conf ) { |
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0
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print "\n"; |
120
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0
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for my $alias ( keys %$conf ) { |
121
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0
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print STDERR " $alias = $conf->{$alias}\n"; |
122
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} |
123
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} |
124
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else { |
125
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0
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print STDERR "No config for '$program'\n"; |
126
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} |
127
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128
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0
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print STDERR "\n"; |
129
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0
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exit 1; |
130
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} |
131
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132
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sub debug { |
133
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0
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0
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0
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my $self = shift; |
134
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0
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require Data::Dumper; |
135
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0
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print Data::Dumper::Dumper($self); |
136
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} |
137
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} |