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=head1 NAME |
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Slaughter::Private - Perl Automation Tool Helper Internal Details |
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=cut |
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=head1 SYNOPSIS |
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This module implements the non-public API of the Slaughter administration tool. |
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Users are not expected to use, touch, browse, or modify the code in this module! |
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=cut |
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=head1 METHODS |
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Now follows documentation on the available methods. |
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=cut |
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use strict; |
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238
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use warnings; |
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3272
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package Slaughter::Private; |
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our $VERSION = "3.0.5"; |
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=head2 fetchFromTransport |
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This primitive will retrieve a file from the central server, using |
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the specified transport. |
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The various transports are pluggable and live beneath the Slaughter::Transport |
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namespace. |
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=for example begin |
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fetchFromTransport( "/etc/motd" ); |
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=for example end |
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50
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A single parameter is accepted which is the name of the file |
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to fetch, relative to the transport's root. |
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On success the file's contents are returned. On failure undef |
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is returned. |
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56
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=cut |
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58
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sub fetchFromTransport |
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{ |
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0
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1
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my ($url) = (@_); |
61
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62
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0
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$::template{ 'verbose' } && print "\tfetchFromTransport( $url ) \n"; |
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64
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0
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0
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my $content = undef; |
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66
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67
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73
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75
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76
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77
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78
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79
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0
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0
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my @urls; |
80
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81
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0
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push( @urls, $url . "." . $::fqdn ); |
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push( @urls, $url . "." . $::hostname ); |
83
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0
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0
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push( @urls, $url . "." . $::role ) |
84
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if ( defined($::role) && length($::role) ); |
85
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0
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push( @urls, $url . "." . $::os ); |
86
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0
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push( @urls, $url . "." . $::arch ); |
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push( @urls, $url ); |
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89
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90
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0
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0
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foreach my $attempt (@urls) |
91
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{ |
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0
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0
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$content = |
93
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$::TRANSPORT->fetchContents( prefix => "/files/", |
94
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file => $attempt ); |
95
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96
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0
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0
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if ( defined($content) ) |
97
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{ |
98
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0
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$::template{ 'verbose' } && print "\t$attempt OK\n"; |
99
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0
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0
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return ($content); |
100
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} |
101
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else |
102
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{ |
103
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0
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0
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0
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$::template{ 'verbose' } && |
104
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print "\t$attempt failed - continuing\n"; |
105
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} |
106
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} |
107
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108
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109
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110
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111
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0
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0
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$::template{ 'verbose' } && |
112
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print "\tFailed to fetch any of our attempts for $url\n"; |
113
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0
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0
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return $content; |
114
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} |
115
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116
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117
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118
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119
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=head2 checksumFile |
120
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121
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This primitive will attempt to calculate and return the SHA digest of |
122
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the specified file. |
123
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124
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The method attempts to use both L<Digest::SHA> & L<Digest::SHA1>, |
125
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returning the result from the first one which is present. |
126
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127
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=for example begin |
128
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129
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checksumFile( "/etc/motd" ); |
130
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131
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=for example end |
132
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133
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A single parameter is accepted which is the name of the file |
134
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to hash. |
135
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136
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On success the hash is returned, on failure undef is returned. |
137
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138
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=cut |
139
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140
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sub checksumFile |
141
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{ |
142
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3
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3
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1
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9992
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my ($file) = (@_); |
143
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144
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3
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3
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my $hash = undef; |
145
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146
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3
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6
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foreach my $module (qw! Digest::SHA Digest::SHA1 !) |
147
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{ |
148
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149
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150
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6
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100
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55
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next if ( defined($hash) ); |
151
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152
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153
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3
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5
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my $eval = "use $module;"; |
154
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155
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156
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2
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2
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515
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eval($eval); |
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2
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1
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2524
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2
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55
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1
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5
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1
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1
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1
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19
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3
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129
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157
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158
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159
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160
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161
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162
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3
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50
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9
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if ( !$@ ) |
163
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{ |
164
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3
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10
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my $object = $module->new; |
165
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166
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3
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50
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109
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open my $handle, "<", $file or |
167
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die "Failed to read $file to hash contents with $module - $!"; |
168
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3
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8
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$object->addfile($handle); |
169
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3
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73
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close($handle); |
170
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171
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3
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24
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$hash = $object->hexdigest(); |
172
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} |
173
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} |
174
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175
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3
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50
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7
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unless ( defined $hash ) |
176
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{ |
177
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0
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0
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die "Failed to calculate hash of $file - internal error."; |
178
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} |
179
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180
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3
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11
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return ($hash); |
181
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} |
182
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183
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184
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1; |
185
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186
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187
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188
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=head1 LICENSE |
189
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190
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Copyright (c) 2010-2015 by Steve Kemp. All rights reserved. |
191
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192
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This module is free software; |
193
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you can redistribute it and/or modify it under |
194
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the same terms as Perl itself. |
195
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The LICENSE file contains the full text of the license. |
196
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197
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=cut |
198
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199
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=head1 AUTHOR |
200
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201
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|
|
Steve Kemp <steve@steve.org.uk> |
202
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203
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=cut |
204
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