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package Tie::File::Hashify; |
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203456
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use strict; |
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use warnings; |
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use Carp; |
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249
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use IO::File; |
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5311
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10
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our $VERSION = '0.03'; |
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12
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13
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sub TIEHASH { |
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6
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2976
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my ($class, $path, %options) = @_; |
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6
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my $self = bless { |
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hash => {}, |
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format => $options{format}, |
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parse => $options{parse}, |
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path => $path, |
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ro => $options{ro}, |
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dirty => 0, |
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}, $class; |
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25
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6
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50
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66
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171
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if($path and -e $path and $options{parse}) { |
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66
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26
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5
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50
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my $io = new IO::File($path) or croak "Can't read $path. $!.\n"; |
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28
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5
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543
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while(my $line = $io->getline) { |
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1403
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next unless defined $line and length($line); |
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31
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my ($key, $value); |
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33
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# Use callback for parsing. |
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100
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if(ref($options{parse}) eq 'CODE') { |
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($key, $value) = &{$options{parse}}($line); |
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36
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} |
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38
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# Parse line using a regular expression. |
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elsif(ref($options{parse}) eq '' or uc(ref($options{parse})) eq 'REGEXP') { |
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100
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80
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my $re = ref($options{parse}) ? $options{parse} : qr/^$options{parse}$/; |
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93
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($key, $value) = ($line =~ $re); |
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} |
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44
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# Croak. |
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else { |
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0
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0
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croak 'Can\'t use ', lc(ref($options{parse})), " for parsing.\n"; |
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} |
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49
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24
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100
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66
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332
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if(defined $key and length $key) { |
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16
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50
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447
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$self->{hash}->{$key} = $value if(length $key); |
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} |
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} |
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54
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5
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185
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$io->close; |
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} |
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57
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6
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98
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return $self; |
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} |
59
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60
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61
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sub FETCH { |
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26
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26
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977
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my ($self, $key) = @_; |
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26
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140
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return $self->{hash}->{$key}; |
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} |
65
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66
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67
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sub STORE { |
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4
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4
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807
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my ($self, $key, $value) = @_; |
69
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70
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4
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100
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202
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croak "Can't store in read-only mode" if($self->{ro}); |
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72
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3
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8
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$self->{dirty} = !0; |
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74
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3
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15
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return $self->{hash}->{$key} = $value; |
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} |
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77
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78
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sub EXISTS { |
79
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2
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2
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7
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my ($self, $key) = @_; |
80
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2
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9
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return exists($self->{hash}->{$key}); |
81
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} |
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83
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84
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sub DELETE { |
85
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2
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2
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797
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my ($self, $key) = @_; |
86
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87
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2
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100
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129
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croak "Can't delete in read-only mode" if($self->{ro}); |
88
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89
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1
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2
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$self->{dirty} = !0; |
90
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91
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1
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7
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return delete($self->{hash}->{$key}); |
92
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} |
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94
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95
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sub CLEAR { |
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1
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1
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1332
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my ($self) = @_; |
97
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98
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1
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50
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135
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croak "Can't clear in read-only mode" if($self->{ro}); |
99
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100
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0
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0
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$self->{dirty} = !0; |
101
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102
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0
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0
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%{$self->{hash}} = (); |
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0
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0
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103
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} |
104
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105
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106
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sub FIRSTKEY { |
107
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2
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2
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281
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my ($self) = @_; |
108
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2
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4
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my ($key) = each %{$self->{hash}}; |
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2
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6
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109
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2
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11
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return $key; |
110
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} |
111
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112
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113
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sub NEXTKEY { |
114
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8
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8
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1036
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my ($self) = @_; |
115
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116
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8
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12
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my ($k, $v) = each %{$self->{hash}}; |
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8
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19
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117
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118
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8
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29
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return $k; |
119
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} |
120
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121
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122
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sub SCALAR { |
123
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2
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2
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10
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my ($self) = @_; |
124
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125
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2
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6
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my $format = $self->{format}; |
126
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127
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2
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50
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13
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if(defined $format) { |
128
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2
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5
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my $text = ''; |
129
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130
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2
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4
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values %{$self->{hash}}; |
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2
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7
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131
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132
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2
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4
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while(my ($key, $value) = each %{$self->{hash}}) { |
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7
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54
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133
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# Format using callback. |
134
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5
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100
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17
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if(ref($format) eq 'CODE') { |
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50
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135
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4
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5
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$text .= &{$format}($key, $value) . "\n"; |
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4
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12
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136
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} |
137
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138
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# Format using sprintf and a format string. |
139
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elsif(ref($format) eq '') { |
140
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1
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9
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$text .= sprintf($format, $key, $value) . "\n"; |
141
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} |
142
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143
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# Croak. |
144
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else { |
145
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0
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0
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croak 'Can\'t use ' . ref($format) . " as format.\n"; |
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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12
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return $text; |
150
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} |
151
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152
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else { |
153
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0
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0
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return %{$self->{hash}}; |
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0
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0
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154
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} |
155
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} |
156
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157
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158
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sub _store { |
159
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12
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12
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21
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my ($self) = @_; |
160
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161
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12
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26
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my $path = $self->{path}; |
162
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163
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12
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100
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100
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547
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if($path and $self->{dirty} and $self->{format} and !$self->{ro}) { |
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100
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66
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164
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1
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50
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10
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my $io = new IO::File('>' . $path) or croak "Can't write $path. $!.\n"; |
165
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166
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1
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186
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$io->print($self->SCALAR); |
167
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1
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17
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$io->close; |
168
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169
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1
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62
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$self->{dirty} = 0; |
170
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} |
171
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} |
172
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173
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174
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sub UNTIE { |
175
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6
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6
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21
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my ($self) = @_; |
176
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177
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6
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24
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$self->_store; |
178
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} |
179
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180
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181
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sub DESTROY { |
182
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6
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6
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541
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my ($self) = @_; |
183
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184
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6
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18
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$self->_store; |
185
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} |
186
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187
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188
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!0; |
189
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190
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__END__ |