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stmt |
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76077
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use 5.008; # utf8 |
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2
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97
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use strict; |
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126
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use warnings; |
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70
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1246
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use utf8; |
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6
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package Path::FindDev::Object; |
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our $VERSION = '0.5.2'; |
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10
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# ABSTRACT: Object oriented guts to FindDev |
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our $AUTHORITY = 'cpan:KENTNL'; # AUTHORITY |
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our $ENV_KEY_DEBUG = 'PATH_FINDDEV_DEBUG'; |
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our $DEBUG = ( exists $ENV{$ENV_KEY_DEBUG} ? $ENV{$ENV_KEY_DEBUG} : undef ); |
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use Class::Tiny 0.010 'set', 'uplevel_max', { |
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nest_retry => sub { |
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1
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35
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return 0; |
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}, |
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isdev => sub { |
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1
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856
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require Path::IsDev::Object; |
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1
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2093
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return Path::IsDev::Object->new( ( $_[0]->has_set ? ( set => $_[0]->set ) : () ) ); |
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}, |
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2
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3016
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}; |
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7561
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46
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## no critic (RequireArgUnpacking) |
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49
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53
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54
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55
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1
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1
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1
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21
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sub has_set { return exists $_[0]->{set} } |
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57
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65
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66
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70
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71
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1
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1
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1
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7
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sub has_uplevel_max { return exists $_[0]->{uplevel_max} } |
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73
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74
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75
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76
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77
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79
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80
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81
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82
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83
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84
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85
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86
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87
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88
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89
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90
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my $instances = {}; |
91
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my $instance_id = 0; |
92
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93
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94
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95
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96
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97
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98
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99
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100
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101
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102
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103
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104
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105
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106
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sub _instance_id { |
107
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0
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0
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0
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my ($self) = @_; |
108
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0
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0
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require Scalar::Util; |
109
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0
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0
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my $addr = Scalar::Util::refaddr($self); |
110
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0
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0
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0
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return $instances->{$addr} if exists $instances->{$addr}; |
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0
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0
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$instances->{$addr} = sprintf '%x', $instance_id++; |
112
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0
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0
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return $instances->{$addr}; |
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} |
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115
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118
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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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124
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sub BUILD { |
125
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1
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1
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1
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85
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my ($self) = @_; |
126
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1
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50
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7
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return $self unless $DEBUG; |
127
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0
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0
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$self->_debug('{'); |
128
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0
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0
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0
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$self->_debug( ' set => ' . $self->set ) if $self->has_set; |
129
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0
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0
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0
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$self->_debug( ' uplevel_max => ' . $self->uplevel_max ) if $self->uplevel_max; |
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0
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0
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$self->_debug( ' nest_retry => ' . $self->nest_retry ); |
131
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0
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0
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$self->_debug( ' isdev => ' . $self->isdev ); |
132
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0
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0
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$self->_debug('}'); |
133
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0
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0
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return $self; |
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} |
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136
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137
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138
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139
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140
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141
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142
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143
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144
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145
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146
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147
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148
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sub _debug { |
149
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3
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3
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98
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my ( $self, $message ) = @_; |
150
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3
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50
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13
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return unless $DEBUG; |
151
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0
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0
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my $id = $self->_instance_id; |
152
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0
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0
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return *STDERR->printf( qq{[Path::FindDev=%s] %s\n}, $id, $message ); |
153
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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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159
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160
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161
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162
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163
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sub _error { |
164
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0
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0
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0
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my ( $self, $message ) = @_; |
165
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0
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0
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my $id = $self->_instance_id; |
166
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0
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0
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my $f_message = sprintf qq{[Path::FindDev=%s] %s\n}, $id, $message; |
167
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0
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0
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require Carp; |
168
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0
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0
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Carp::croak($f_message); |
169
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} |
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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175
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176
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177
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178
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179
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180
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181
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182
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183
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184
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185
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186
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sub _step { |
187
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2
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2
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3
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my ( $self, $search_root, $dev_levels, $uplevels ) = @_; |
188
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189
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2
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100
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54
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if ( $self->isdev->matches($search_root) ) { |
190
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1
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3751
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$self->_debug( 'Found dev dir' . $search_root ); |
191
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1
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3
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${$dev_levels}++; |
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1
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3
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192
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1
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50
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2
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return { type => 'found', path => $search_root } if ${$dev_levels} >= $self->nest_retry; |
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1
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30
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193
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0
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0
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$self->_debug( sprintf 'Ignoring found dev dir due to dev_levels(%s) < nest_retry(%s)', ${$dev_levels}, $self->nest_retry ); |
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0
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0
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194
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} |
195
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1
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50
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98965
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if ( $search_root->is_rootdir ) { |
196
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0
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0
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$self->_debug('OS Root hit ( ->is_rootdir )'); |
197
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0
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0
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return { type => 'stop' }; |
198
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} |
199
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1
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50
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33
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15
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if ( $self->has_uplevel_max and ${$uplevels} > $self->uplevel_max ) { |
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0
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0
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200
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0
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0
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$self->_debug( 'Stopping search due to uplevels(%s) >= uplevel_max(%s)', ${$uplevels}, $self->uplevel_max ); |
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0
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0
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201
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0
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0
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return { type => 'stop' }; |
202
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} |
203
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204
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1
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5
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return { type => 'next' }; |
205
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} |
206
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207
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208
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209
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210
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211
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212
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213
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214
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215
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sub find_dev { |
216
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1
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1
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1
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3
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my ( $self, $path ) = @_; |
217
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1
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8
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require Path::Tiny; |
218
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1
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5
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my $search_root = Path::Tiny::path($path)->absolute->realpath; |
219
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1
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197
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$self->_debug( 'Finding dev for ' . $path ); |
220
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1
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2
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my $dev_levels = 0; |
221
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1
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2
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my $uplevels = 0 - 1; |
222
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2
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4
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FLOW: { |
223
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1
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21
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$uplevels++; |
224
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2
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8
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my $result = $self->_step( $search_root, \$dev_levels, \$uplevels ); |
225
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2
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100
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18
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if ( 'next' eq $result->{type} ) { |
226
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1
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6
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$self->_debug( 'Trying ../ : ' . $search_root->parent ); |
227
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1
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8
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$search_root = $search_root->parent; |
228
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1
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35
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redo FLOW; |
229
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} |
230
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1
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50
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8
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if ( 'stop' eq $result->{type} ) { |
231
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0
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return; |
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} |
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if ( 'found' eq $result->{type} ) { |
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return $result->{path}; |
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} |
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$self->_error( 'Unexpected end of flow control with _step response type' . $result->{type} ); |
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} |
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return; |
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} |
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1; |
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__END__ |
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=pod |
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=encoding UTF-8 |
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=head1 NAME |
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Path::FindDev::Object - Object oriented guts to FindDev |
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=head1 VERSION |
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version 0.5.2 |
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=head1 SYNOPSIS |
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require Path::FindDev::Object; |
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my $finder = Path::FindDev::Object->new(); |
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my $dev = $finder->find_dev($path); |
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=head1 DESCRIPTION |
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This module implements the innards of L<< C<Path::FindDev>|Path::FindDev >>, and is |
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only recommended for use if the Exporter C<API> is insufficient for your needs. |
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=head1 METHODS |
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=head2 C<has_set> |
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Determines if the C<set> attribute exists |
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=head2 C<has_uplevel_max> |
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Determines if the C<uplevel_max> attribute is provided. |
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=head2 C<find_dev> |
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Find a parent at, or above C<$OtherPath> that resembles a C<devel> directory. |
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my $path = $object->find_dev( $OtherPath ); |
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=head1 ATTRIBUTES |
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=head2 C<set> |
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287
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B<(optional)> |
288
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289
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The C<Path::IsDev::HeuristicSet> subclass for your desired Heuristics. |
290
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291
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=head2 C<uplevel_max> |
292
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293
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If provided, limits the number of C<uplevel> iterations done. |
294
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295
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( that is, limits the number of times it will step up the hierarchy ) |
296
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297
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=head2 C<nest_retry> |
298
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299
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The number of C<dev> directories to C<ignore> in the hierarchy. |
300
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301
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This is provided in the event you have a C<dev> directory within a C<dev> directory, and you wish |
302
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to resolve an outer directory instead of an inner one. |
303
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304
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By default, this is C<0>, or "stop at the first C<dev> directory" |
305
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306
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|
=head2 C<isdev> |
307
|
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|
308
|
|
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|
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|
|
The L<< C<Path::IsDev>|Path::IsDev >> object that checks nodes for C<dev>-ishness. |
309
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310
|
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|
=head1 PRIVATE METHODS |
311
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312
|
|
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|
|
=head2 C<_instance_id> |
313
|
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|
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|
|
|
314
|
|
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|
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|
|
An opportunistic sequence number for help with debug messages. |
315
|
|
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|
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|
|
|
316
|
|
|
|
|
|
|
Note: This is not guaranteed to be unique per instance, only guaranteed |
317
|
|
|
|
|
|
|
to be constant within the life of the object. |
318
|
|
|
|
|
|
|
|
319
|
|
|
|
|
|
|
Based on C<refaddr>, and giving out new ids when new C<refaddr>'s are seen. |
320
|
|
|
|
|
|
|
|
321
|
|
|
|
|
|
|
my $id = $object->_instance_id; |
322
|
|
|
|
|
|
|
|
323
|
|
|
|
|
|
|
=head2 C<BUILD> |
324
|
|
|
|
|
|
|
|
325
|
|
|
|
|
|
|
C<BUILD> is an implementation detail of C<Moo>/C<Moose>. |
326
|
|
|
|
|
|
|
|
327
|
|
|
|
|
|
|
This module hooks C<BUILD> to give a self report of the object |
328
|
|
|
|
|
|
|
to C<*STDERR> after C<< ->new >> when under C<$DEBUG> |
329
|
|
|
|
|
|
|
|
330
|
|
|
|
|
|
|
=head2 C<_debug> |
331
|
|
|
|
|
|
|
|
332
|
|
|
|
|
|
|
The debugger callback. |
333
|
|
|
|
|
|
|
|
334
|
|
|
|
|
|
|
export PATH_FINDDEV_DEBUG=1 |
335
|
|
|
|
|
|
|
|
336
|
|
|
|
|
|
|
to get debug info. |
337
|
|
|
|
|
|
|
|
338
|
|
|
|
|
|
|
$object->_debug($message); |
339
|
|
|
|
|
|
|
|
340
|
|
|
|
|
|
|
=head2 C<_error> |
341
|
|
|
|
|
|
|
|
342
|
|
|
|
|
|
|
The error reporting callback. |
343
|
|
|
|
|
|
|
|
344
|
|
|
|
|
|
|
$object->_error($message); |
345
|
|
|
|
|
|
|
|
346
|
|
|
|
|
|
|
=head2 C<_step> |
347
|
|
|
|
|
|
|
|
348
|
|
|
|
|
|
|
Inner code path of tree walking. |
349
|
|
|
|
|
|
|
|
350
|
|
|
|
|
|
|
my ($dev_levels, $uplevels ) = (0,0); |
351
|
|
|
|
|
|
|
|
352
|
|
|
|
|
|
|
my $result = $object->_step( path($somepath), \$dev_levels, \$uplevels ); |
353
|
|
|
|
|
|
|
|
354
|
|
|
|
|
|
|
$result->{type} eq 'stop' # if flow control should end |
355
|
|
|
|
|
|
|
$result->{type} eq 'next' # if flow control should ascend to parent |
356
|
|
|
|
|
|
|
$result->{type} eq 'found' # if flow control has found the "final" dev directory |
357
|
|
|
|
|
|
|
|
358
|
|
|
|
|
|
|
=begin MetaPOD::JSON v1.1.0 |
359
|
|
|
|
|
|
|
|
360
|
|
|
|
|
|
|
{ |
361
|
|
|
|
|
|
|
"namespace":"Path::FindDev::Object", |
362
|
|
|
|
|
|
|
"interface":"class", |
363
|
|
|
|
|
|
|
"inherits":"Class::Tiny::Object" |
364
|
|
|
|
|
|
|
} |
365
|
|
|
|
|
|
|
|
366
|
|
|
|
|
|
|
|
367
|
|
|
|
|
|
|
=end MetaPOD::JSON |
368
|
|
|
|
|
|
|
|
369
|
|
|
|
|
|
|
=head1 AUTHOR |
370
|
|
|
|
|
|
|
|
371
|
|
|
|
|
|
|
Kent Fredric <kentfredric@gmail.com> |
372
|
|
|
|
|
|
|
|
373
|
|
|
|
|
|
|
=head1 COPYRIGHT AND LICENSE |
374
|
|
|
|
|
|
|
|
375
|
|
|
|
|
|
|
This software is copyright (c) 2014 by Kent Fredric <kentfredric@gmail.com>. |
376
|
|
|
|
|
|
|
|
377
|
|
|
|
|
|
|
This is free software; you can redistribute it and/or modify it under |
378
|
|
|
|
|
|
|
the same terms as the Perl 5 programming language system itself. |
379
|
|
|
|
|
|
|
|
380
|
|
|
|
|
|
|
=cut |