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1168
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use strict; |
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use warnings; |
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package Text::SimpleTable::AutoWidth; |
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$Text::SimpleTable::AutoWidth::VERSION = '0.09'; |
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1090
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use Moo; |
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# ABSTRACT: Text::SimpleTable::AutoWidth - Simple eyecandy ASCII tables with auto-width selection |
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has 'fixed_width' => ( is => 'rw', default => 0 ); # isa => 'Int' |
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has 'max_width' => ( is => 'rw', default => 0 ); # isa => 'Int' |
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has 'captions' => ( is => 'rw' ); # isa => 'ArrayRef[Str]' |
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has 'rows' => ( is => 'rw' ); # isa => 'ArrayRef[ArrayRef[Str]]' |
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our $WIDTH_LIMIT = 200; # default maximum width |
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sub row { |
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my ( $self, @texts ) = @_; |
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if ( $self->rows ) { |
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push( @{ $self->rows }, [@texts] ); |
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} |
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else { |
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$self->rows( [ [@texts] ] ); |
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} |
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return $self; |
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} |
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2815
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use List::Util; |
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919
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use Text::SimpleTable; |
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3097
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1009
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sub draw { |
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my $self = shift; |
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# count of columns will be same as count of captions, or same |
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# as count of columns in first row, if there is no captions |
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my $columns = |
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( $self->captions && @{ $self->captions } ) |
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|| ( $self->rows && @{ $self->rows->[0] } ) |
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|| 0; |
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return unless $columns; |
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# table will not be wider than limits |
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my $limit = |
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$self->max_width ? $self->max_width |
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: $self->fixed_width ? $self->fixed_width |
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: $WIDTH_LIMIT; |
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# by default, each column should have at least 2 symbols: |
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# one informative and one for '-' (if we'll need to wrap) |
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my @max_width = (2) x $columns; |
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# calculate max width of each column |
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for my $row ( ( $self->captions ? $self->captions : () ), @{ $self->rows } ) { |
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my @row_width = map { length } @$row; |
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$#row_width = $columns - 1 if $#row_width >= $columns; |
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# find new width |
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# we will do this in two passes |
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my @new_width = @max_width; |
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# first pass: |
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# find new width for all columns, that we can |
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# make wider without need to wrap anything |
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for my $idx ( 0 .. $#row_width ) { |
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if ( $max_width[$idx] < $row_width[$idx] ) { |
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$new_width[$idx] = $row_width[$idx]; |
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# check for limits |
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my $total = $columns + 1 # for each '|' |
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+ $columns * 2 # for spaces around each value |
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+ List::Util::reduce { $a + $b } @new_width; |
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# restore old value, if new value will lead to wrap |
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$new_width[$idx] = $max_width[$idx] |
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if $total > $limit; |
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} |
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} |
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# second pass: |
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# find new width for all columns, that we can |
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# make wider and need to wrap something |
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for my $idx ( 0 .. $#row_width ) { |
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if ( $new_width[$idx] < $row_width[$idx] ) { |
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my $total = $columns + 1 # for each '|' |
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+ $columns * 2 # for spaces around each value |
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+ List::Util::reduce { $a + $b } @new_width; |
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$new_width[$idx] += $limit - $total; |
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last; |
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} |
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} |
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# save new result |
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@max_width = @new_width; |
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# check for limits |
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my $total = $columns + 1 # for each '|' |
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+ $columns * 2 # for spaces around each value |
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+ List::Util::reduce { $a + $b } @max_width; |
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last if $total >= $limit; |
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} |
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# check for fixed_width |
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if ( $self->fixed_width ) { |
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my $total = $columns + 1 # for each '|' |
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+ $columns * 2 # for spaces around each value |
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+ List::Util::reduce { $a + $b } @max_width; |
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$max_width[-1] += $self->fixed_width - $total |
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unless $total == $self->fixed_width; |
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} |
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# prepare drawer |
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my @params = @max_width; |
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if ( $self->captions ) { |
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my $idx = 0; |
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for (@params) { |
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$_ = [ $_, $self->captions->[ $idx++ ] ]; |
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} |
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} |
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my $tab = Text::SimpleTable->new(@params); |
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# put rows into drawer |
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$tab->row(@$_) for @{ $self->rows }; |
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return $tab->draw(); |
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} |
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__PACKAGE__->meta->make_immutable(); |
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1; # End of Text::SimpleTable::AutoWidth |
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__END__ |