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package IO::Uncompress::Bunzip2 ; |
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83
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4801
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use strict ; |
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2241
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use warnings; |
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use bytes; |
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3104
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use IO::Compress::Base::Common 2.206 qw(:Status ); |
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1333
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9252
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4360
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use IO::Uncompress::Base 2.206 ; |
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3740
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3789
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use IO::Uncompress::Adapter::Bunzip2 2.206 ; |
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1573
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50306
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require Exporter ; |
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our ($VERSION, @ISA, @EXPORT_OK, %EXPORT_TAGS, $Bunzip2Error); |
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$VERSION = '2.206'; |
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$Bunzip2Error = ''; |
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@ISA = qw(IO::Uncompress::Base Exporter); |
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@EXPORT_OK = qw( $Bunzip2Error bunzip2 ) ; |
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#%EXPORT_TAGS = %IO::Uncompress::Base::EXPORT_TAGS ; |
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push @{ $EXPORT_TAGS{all} }, @EXPORT_OK ; |
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#Exporter::export_ok_tags('all'); |
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sub new |
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{ |
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508
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508
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1
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42801
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my $class = shift ; |
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508
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1376
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my $obj = IO::Compress::Base::Common::createSelfTiedObject($class, \$Bunzip2Error); |
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508
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1422
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$obj->_create(undef, 0, @_); |
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} |
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sub bunzip2 |
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{ |
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1
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45323
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my $obj = IO::Compress::Base::Common::createSelfTiedObject(undef, \$Bunzip2Error); |
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66
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230
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return $obj->_inf(@_); |
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} |
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39
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sub getExtraParams |
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{ |
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return ( |
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557
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557
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0
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3971
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'verbosity' => [IO::Compress::Base::Common::Parse_boolean, 0], |
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'small' => [IO::Compress::Base::Common::Parse_boolean, 0], |
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); |
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} |
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47
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48
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sub ckParams |
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{ |
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563
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563
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0
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737
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my $self = shift ; |
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563
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672
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my $got = shift ; |
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53
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563
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1109
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return 1; |
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} |
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56
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sub mkUncomp |
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{ |
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562
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562
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0
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782
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my $self = shift ; |
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562
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630
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my $got = shift ; |
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61
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562
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100
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939
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my $magic = $self->ckMagic() |
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or return 0; |
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64
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510
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50
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1024
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*$self->{Info} = $self->readHeader($magic) |
65
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or return undef ; |
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67
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510
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2373
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my $Small = $got->getValue('small'); |
68
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510
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888
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my $Verbosity = $got->getValue('verbosity'); |
69
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70
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510
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1163
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my ($obj, $errstr, $errno) = IO::Uncompress::Adapter::Bunzip2::mkUncompObject( |
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$Small, $Verbosity); |
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73
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510
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50
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1090
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return $self->saveErrorString(undef, $errstr, $errno) |
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if ! defined $obj; |
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76
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510
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1233
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*$self->{Uncomp} = $obj; |
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78
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510
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1039
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return 1; |
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80
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} |
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82
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83
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sub ckMagic |
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{ |
85
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1171
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1171
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0
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1490
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my $self = shift; |
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87
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1171
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1396
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my $magic ; |
88
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1171
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3160
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$self->smartReadExact(\$magic, 4); |
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90
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1171
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2344
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*$self->{HeaderPending} = $magic ; |
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92
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1171
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100
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2279
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return $self->HeaderError("Header size is " . |
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4 . " bytes") |
94
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if length $magic != 4; |
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96
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1135
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100
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1909
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return $self->HeaderError("Bad Magic.") |
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if ! isBzip2Magic($magic) ; |
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99
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100
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1068
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2442
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*$self->{Type} = 'bzip2'; |
101
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1068
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2413
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return $magic; |
102
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} |
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104
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sub readHeader |
105
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{ |
106
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1068
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1068
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0
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1337
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my $self = shift; |
107
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1068
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1381
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my $magic = shift ; |
108
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109
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1068
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3053
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$self->pushBack($magic); |
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1068
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1528
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*$self->{HeaderPending} = ''; |
111
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112
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113
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return { |
114
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1068
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6487
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'Type' => 'bzip2', |
115
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'FingerprintLength' => 4, |
116
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'HeaderLength' => 4, |
117
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'TrailerLength' => 0, |
118
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'Header' => '$magic' |
119
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}; |
120
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121
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} |
122
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123
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sub chkTrailer |
124
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{ |
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1064
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1064
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0
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2227
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return STATUS_OK; |
126
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} |
127
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128
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129
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130
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sub isBzip2Magic |
131
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{ |
132
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1135
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1135
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0
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1755
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my $buffer = shift ; |
133
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134
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# ASCII: B Z h 0 9 |
135
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1135
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10684
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return $buffer =~ qr/^\x42\x5A\x68[\x30-\x39]$/; |
136
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} |
137
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138
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1 ; |
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140
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__END__ |