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package Data::DynamicValidator::Path; |
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{ |
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$Data::DynamicValidator::Path::VERSION = '0.03'; |
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} |
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# ABSTRACT: Class represents "splitted" to labelled componets path. |
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5467
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use strict; |
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use warnings; |
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use Carp; |
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use Scalar::Util qw/looks_like_number/; |
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use overload fallback => 1, q/""/ => sub { $_[0]->to_string }; |
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629381
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use constant DEBUG => $ENV{DATA_DYNAMICVALIDATOR_DEBUG} || 0; |
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10987
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sub new { |
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my ($class, $path) = @_; |
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my $self = { }; |
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bless $self => $class; |
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$self->_build_components($path); |
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return $self; |
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} |
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sub _build_components { |
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my ($self, $path) = @_; |
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# handle escaped path components |
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$_ = $path; |
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# substitute all '/'-symbols to "`" and strip |
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# surrounding(wraping) ` |
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s[`(.+?)`][my $x=$1;$x=~ tr{/}{`};$x]ge; |
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87
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my @elements = split '/'; |
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for(@elements) { |
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tr {`}{/}; # roll back slashes again |
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} |
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for my $i (0..@elements-1) { |
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my @parts = split(':', $elements[$i]); |
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if (@parts > 1) { |
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$elements[$i] = $parts[1]; |
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$self->{_labels}->{ $parts[0] } = $i; |
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} |
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} |
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# special name _ for the last route component |
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$self->{_labels}->{'_'} = @elements-1; |
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87
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$self->{_components} = \@elements; |
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} |
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0
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sub components { shift->{_components} } |
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sub to_string { |
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2185
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join('/', |
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map { /\// ? "`$_`" : $_ } |
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0
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2941
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@{ shift->{_components} }) |
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} |
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sub labels { |
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0
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my $self = shift; |
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my $labels = $self->{_labels}; |
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sort { $labels->{$a} <=> $labels->{$b} } grep { $_ ne '_' } keys %$labels; |
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165
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} |
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sub named_route { |
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0
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my ($self, $label) = @_; |
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croak("No label '$label' in path '$self'") |
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unless exists $self->{_labels}->{$label}; |
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return $self->_clone_to($self->{_labels}->{$label}); |
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} |
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sub named_component { |
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0
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my ($self, $label) = @_; |
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croak("No label '$label' in path '$self'") |
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unless exists $self->{_labels}->{$label}; |
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my $idx = $self->{_labels}->{$label}; |
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return $self->{_components}->[$idx]; |
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} |
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sub _clone_to { |
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my ($self, $index) = @_; |
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my @components; |
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for my $i (0 .. $index) { |
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push @components, $self->{_components}->[$i] |
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} |
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while ( my ($name, $idx) = each(%{ $self->{_labels} })) { |
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$components[$idx] = join(':', $name, $components[$idx]) |
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if( $idx <= $index && $name ne '_'); |
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} |
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my $path = join('/', @components); |
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return Data::DynamicValidator::Path->new($path); |
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} |
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sub value { |
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1
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my ($self, $data, $label) = @_; |
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$label //= '_'; |
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croak("No label '$label' in path '$self'") |
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if(!exists $self->{_labels}->{$label}); |
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my $idx = $self->{_labels}->{$label}; |
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my $value = $data; |
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for my $i (1 .. $idx) { |
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221
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366
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my $element = $self->{_components}->[$i]; |
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221
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if (ref($value) && ref($value) eq 'HASH' && exists $value->{$element}) { |
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66
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103
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147
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227
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$value = $value->{$element}; |
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276
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next; |
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} |
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elsif (ref($value) && ref($value) eq 'ARRAY' |
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&& looks_like_number($element) && $element < @$value) { |
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121
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$value = $value->[$element]; |
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242
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next; |
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} |
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0
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0
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croak "I don't know how to get element#$i ($element) at $self"; |
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} |
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95
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137
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if (DEBUG) { |
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warn "-- value for $self is " |
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. (defined($value)? $value : 'undefined') . "\n" |
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} |
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95
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402
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return $value; |
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} |
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120
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1; |
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122
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__END__ |
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124
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=pod |
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126
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=encoding UTF-8 |
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128
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=head1 NAME |
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130
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Data::DynamicValidator::Path - Class represents "splitted" to labelled componets path. |
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132
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=head1 VERSION |
133
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134
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version 0.03 |
135
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136
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=head1 METHODS |
137
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138
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=head2 value |
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140
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Returns data value under named label or (if undefined) |
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the value under path itself |
142
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143
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=head1 AUTHOR |
144
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145
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Ivan Baidakou <dmol@gmx.com> |
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147
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=head1 COPYRIGHT AND LICENSE |
148
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149
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This software is copyright (c) 2014 by Ivan Baidakou. |
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151
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This is free software; you can redistribute it and/or modify it under |
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the same terms as the Perl 5 programming language system itself. |
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154
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=cut |