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package ShellScript::Env; |
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3946
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use strict; |
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use File::Find; |
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3670
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sub new { |
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my $this = shift; |
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my $class = ref($this) || $this; |
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my $self = {}; |
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bless $self, $class; |
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$self->{'prefix'} = shift; |
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if (!defined $self->{'prefix'}) { |
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warn ref($self) . ' constructed with no argument, using `.\' as prefix'; |
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$self->{'prefix'} = '.'; |
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} |
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%{$self->{'dir_search'}} = |
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( |
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'LD_LIBRARY_PATH' => ['lib'], |
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'PATH' => ['bin'], |
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'MANPATH' => ['man'], |
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'INFOPATH' => ['info'], |
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); |
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2
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5
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push @{$self->{'skip_dirs'}}, 'src'; |
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return $self; |
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} |
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32
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####################### |
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# Functions to be considered public |
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36
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# Functions that searches the prefix directory for common path names. |
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sub automatic { |
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0
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my $self = shift; |
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40
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2
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foreach my $env (keys %{$self->{'dir_search'}}) { |
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10
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41
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8
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my @found = $self->dir_find(@{$self->{'dir_search'}->{$env}}); |
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26
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42
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100
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24
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if (scalar(@found) > 0) { |
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3
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$self->set_path($env, @found, "\$$env"); |
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} |
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} |
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2
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6
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return $self; |
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} |
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49
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50
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# Just sets a list, no processing or notten. |
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sub set { |
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6
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6
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0
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12
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my $self = shift; |
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6
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8
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my $env = shift; |
54
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55
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6
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@{$self->{'env'}->{$env}} = @_; |
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22
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56
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6
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$self->{'utok'}->{$env} = 0; |
57
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6
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7
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push @{$self->{'order'}}, $env; |
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6
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11
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58
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59
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6
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11
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return $self; |
60
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} |
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62
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# Make a list and check it twice. Well, appends $self->{'prefix'} if |
63
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# needed and check if you want utok. |
64
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sub set_path { |
65
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4
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4
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0
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8
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my $self = shift; |
66
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4
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6
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my $env = shift; |
67
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4
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8
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my @dirs = @_; |
68
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69
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4
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8
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for (@dirs) { |
70
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9
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20
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my $prefix = quotemeta($self->{'prefix'}); |
71
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9
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100
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100
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82
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if (($_ !~ m/^$prefix/) && ($_ =~ m:^[^\$\/]:)) { |
72
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1
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7
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s:^:$self->{'prefix'}/:; |
73
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} |
74
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} |
75
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4
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17
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$self->set($env, @dirs); |
76
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4
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50
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20
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$self->{'utok'}->{$env} = ($ShellScript::Env::utok || 0); |
77
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78
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4
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15
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return $self; |
79
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} |
80
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81
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# deletes a variable. |
82
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sub unset { |
83
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2
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2
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0
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4
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my $self = shift; |
84
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2
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4
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my $env = shift; |
85
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86
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# Remove one element from a list. Isn't there a cool way to do this |
87
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# with map? |
88
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2
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3
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my @rebuild; |
89
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2
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2
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for (@{$self->{'order'}}) { |
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2
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14
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90
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3
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100
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9
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if ($_ ne $env) { |
91
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1
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3
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push @rebuild, $_; |
92
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} |
93
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} |
94
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2
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4
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@{$self->{'order'}} = @rebuild; |
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2
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6
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95
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96
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2
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6
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delete $self->{'env'}->{$env}; |
97
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2
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3
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delete $self->{'utok'}->{$env}; |
98
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99
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2
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5
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return $self; |
100
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} |
101
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102
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# Returns 0 if there are no errors. |
103
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sub save { |
104
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0
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0
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0
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0
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my $self = shift; |
105
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106
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0
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0
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my $error = 0; |
107
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108
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0
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0
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my $csh_file = "$self->{prefix}.csh"; |
109
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0
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0
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0
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if (open(CSH, ">$csh_file")) { |
110
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0
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0
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print "Writing $csh_file\n"; |
111
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0
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0
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print CSH $self->csh(); |
112
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0
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0
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close(CSH); |
113
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} else { |
114
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0
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0
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++$error; |
115
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0
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0
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warn "Can't write $csh_file: $!"; |
116
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} |
117
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118
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0
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0
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my $sh_file = "$self->{prefix}sh"; |
119
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0
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0
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0
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if (open(SH, ">$sh_file")) { |
120
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0
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0
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print "Writing $sh_file.\n"; |
121
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0
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0
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print SH $self->sh(); |
122
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0
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0
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close(SH); |
123
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} else { |
124
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0
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0
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++$error; |
125
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0
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0
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warn "Can't write $sh_file: $!"; |
126
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} |
127
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128
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0
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0
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return $error; |
129
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} |
130
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131
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132
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133
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################## |
134
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# functions to generate shell scripts, these are considered public |
135
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# too. Are there other common shells that arn't compatible with C or |
136
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# Bourne Shell? |
137
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138
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# output Bourne Shell. |
139
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sub sh { |
140
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5
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5
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0
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15
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my $self = shift; |
141
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142
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5
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10
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my $output = ''; |
143
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5
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6
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my $export = 'export '; |
144
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145
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5
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8
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for (@{$self->{'order'}}) { |
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5
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11
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146
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11
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41
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$export .= "$_ "; |
147
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148
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11
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100
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24
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if ($self->{'utok'}->{$_}) { |
149
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1
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2
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$output .= "$_=`utok "; |
150
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} else { |
151
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10
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17
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$output .= "$_="; |
152
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} |
153
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154
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155
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11
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11
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for (@{$self->{'env'}->{$_}}) { |
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11
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20
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156
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17
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30
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$output .= "$_:"; |
157
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} |
158
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159
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11
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100
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25
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if ($self->{'utok'}->{$_}) { |
160
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1
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5
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$output =~ s/:$/\`\n/; |
161
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} else { |
162
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10
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40
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$output =~ s/:$/\n/; |
163
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} |
164
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165
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} |
166
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167
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5
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50
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15
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if ($export ne 'export ') { |
168
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5
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8
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$output .= $export; |
169
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} |
170
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5
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13
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$output =~ s/\ $/\n/; |
171
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172
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5
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24
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return $output; |
173
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} |
174
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175
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# output C Shell. |
176
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sub csh { |
177
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3
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3
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0
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6
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my $self = shift; |
178
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179
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3
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3
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my $output = ''; |
180
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3
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4
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for (@{$self->{'order'}}) { |
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3
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8
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181
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182
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8
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10
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my $delimiter = ':'; |
183
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# I hate how C Shell set every variable one way, and PATH another. |
184
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# It bugs me to no end. |
185
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8
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100
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15
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if ($_ eq 'PATH') { |
186
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2
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2
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$delimiter = ' '; |
187
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2
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5
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$output .= "set path = ("; |
188
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} else { |
189
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6
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11
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$output .= "setenv $_ "; |
190
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} |
191
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192
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8
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100
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22
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if ($self->{'utok'}->{$_}) { |
193
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1
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50
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5
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if ($delimiter ne ':') { |
194
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1
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3
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$output .= "`utok -s '$delimiter' "; |
195
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} else { |
196
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0
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0
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$output .= '`utok '; |
197
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} |
198
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} |
199
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|
200
|
8
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8
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my $item; |
201
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8
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14
|
foreach $item (@{$self->{'env'}->{$_}}) { |
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8
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20
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202
|
10
|
100
|
100
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|
32
|
if (($_ eq 'PATH') && ($item eq '$PATH')) { |
203
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2
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6
|
$output .= "\$path$delimiter"; |
204
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|
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} else { |
205
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8
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21
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$output .= "$item$delimiter"; |
206
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} |
207
|
|
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} |
208
|
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|
209
|
8
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|
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12
|
$delimiter = quotemeta($delimiter); |
210
|
8
|
100
|
|
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|
32
|
if ($self->{'utok'}->{$_}) { |
211
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1
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29
|
$output =~ s/$delimiter$/\`\n/; |
212
|
|
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|
} else { |
213
|
7
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70
|
$output =~ s/$delimiter$/\n/; |
214
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} |
215
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216
|
8
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100
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|
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|
25
|
if ($_ eq 'PATH') { |
217
|
2
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17
|
$output =~ s/\n$/\)\n/; |
218
|
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} |
219
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|
} |
220
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221
|
3
|
|
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|
|
15
|
return $output; |
222
|
|
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|
} |
223
|
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224
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225
|
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|
|
##################### |
226
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|
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# Private functions. |
227
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228
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|
|
# I really wish File::Find's find returned an array. I also wish it |
229
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|
|
# worked while tainted. oh well. |
230
|
|
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|
|
|
|
sub dir_find { |
231
|
9
|
|
|
9
|
0
|
20
|
my $self = shift; |
232
|
|
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|
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|
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|
233
|
9
|
|
|
|
|
21
|
@ShellScript::Env::find = @_; |
234
|
9
|
|
|
|
|
13
|
undef @ShellScript::Env::found; |
235
|
9
|
|
|
|
|
7
|
@ShellScript::Env::skip = @{$self->{'skip_dirs'}}; |
|
9
|
|
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|
|
24
|
|
236
|
|
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|
|
|
|
237
|
9
|
|
|
|
|
10
|
my @output; |
238
|
9
|
50
|
|
|
|
107
|
if (-l $self->{'prefix'}) { |
239
|
|
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|
|
|
|
|
240
|
|
|
|
|
|
|
|
241
|
0
|
|
|
|
|
0
|
my $newdir = $self->{'prefix'}; |
242
|
0
|
|
|
|
|
0
|
$newdir =~ s<[^/]*$><>; |
243
|
0
|
|
|
|
|
0
|
chdir($newdir); |
244
|
|
|
|
|
|
|
|
245
|
0
|
|
|
|
|
0
|
my $prefix = readlink($self->{'prefix'}); |
246
|
0
|
|
|
|
|
0
|
find(\&wanted, $prefix); |
247
|
0
|
|
|
|
|
0
|
$prefix = quotemeta($prefix); |
248
|
0
|
|
0
|
|
|
0
|
@output = map(s/^$prefix/$self->{'prefix'}/g && $_, |
249
|
|
|
|
|
|
|
@ShellScript::Env::found); |
250
|
|
|
|
|
|
|
|
251
|
|
|
|
|
|
|
} else { |
252
|
9
|
|
|
|
|
500
|
find(\&wanted, $self->{'prefix'}); |
253
|
9
|
|
|
|
|
25
|
@output = @ShellScript::Env::found; |
254
|
|
|
|
|
|
|
} |
255
|
|
|
|
|
|
|
|
256
|
9
|
|
|
|
|
12
|
undef @ShellScript::Env::skip; |
257
|
9
|
|
|
|
|
12
|
undef @ShellScript::Env::found; |
258
|
9
|
|
|
|
|
8
|
undef $ShellScript::Env::find; |
259
|
|
|
|
|
|
|
|
260
|
9
|
|
|
|
|
25
|
return sort @output; |
261
|
|
|
|
|
|
|
} |
262
|
|
|
|
|
|
|
|
263
|
|
|
|
|
|
|
# Only used for call to find. |
264
|
|
|
|
|
|
|
sub wanted { |
265
|
99
|
|
|
99
|
0
|
153
|
foreach my $find (@ShellScript::Env::find) { |
266
|
99
|
|
|
|
|
111
|
$find = quotemeta($find); |
267
|
99
|
100
|
100
|
|
|
603
|
if (m/^$find$/ && -d $_) { |
268
|
8
|
|
|
|
|
15
|
for (@ShellScript::Env::skip) { |
269
|
11
|
|
|
|
|
18
|
my $skip = quotemeta($_); |
270
|
11
|
100
|
|
|
|
103
|
if ($File::Find::name =~ m$skip/>) { |
271
|
2
|
|
|
|
|
96
|
return 0; |
272
|
|
|
|
|
|
|
} |
273
|
|
|
|
|
|
|
} |
274
|
6
|
|
|
|
|
9
|
push @ShellScript::Env::found, $File::Find::name; |
275
|
6
|
|
|
|
|
301
|
return 1; |
276
|
|
|
|
|
|
|
} |
277
|
|
|
|
|
|
|
} |
278
|
91
|
|
|
|
|
2955
|
return 0; |
279
|
|
|
|
|
|
|
} |
280
|
|
|
|
|
|
|
|
281
|
|
|
|
|
|
|
|
282
|
|
|
|
|
|
|
|
283
|
|
|
|
|
|
|
################### |
284
|
|
|
|
|
|
|
# bye, bye. |
285
|
|
|
|
|
|
|
return 1; |
286
|
|
|
|
|
|
|
|