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package Data::Tabulator; |
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use warnings; |
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use strict; |
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=head1 NAME |
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Data::Tabulator - Create a table (two-dimensional array) from a list (one-dimensional array) |
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=head1 VERSION |
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Version 0.03 |
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=cut |
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our $VERSION = '0.03'; |
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=head1 SYNOPSIS |
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my $table = Data::Tabulator->new([ 'a' .. 'z' ], rows => 6); |
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my $rows = $table->rows; |
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# Returns a the following two-dimensional array: |
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# [ |
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# [ qw/ a b c d e / ], |
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# [ qw/ f g h i j / ], |
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# [ qw/ k l m n o / ], |
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# [ qw/ p q r s t / ], |
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# [ qw/ u v w x y / ], |
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# [ qw/ z/ ], |
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# ] |
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my $columns = $table->columns; |
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# Returns a the following two-dimensional array: |
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# [ |
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# [ qw/ a f k p u z / ], |
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# [ qw/ b g l q v / ], |
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# [ qw/ c h m r w / ], |
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# [ qw/ d i n s x / ], |
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# [ qw/ e j o t y / ], |
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# ] |
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=head1 DESCRIPTION |
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Data::Tabulator is a simple and straightforward module for generating a table from an array. |
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It can properly handle data that is in either row- or column-major order. |
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=cut |
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use POSIX qw/ceil/; |
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use Sub::Exporter -setup => { |
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exports => [ |
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rows => sub { \&_rows }, |
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columns => sub { \&_columns }, |
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], |
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}; |
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use Scalar::Util qw/blessed/; |
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use base qw/Class::Accessor::Fast/; |
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__PACKAGE__->mk_accessors(qw/_data _row_count _column_count |
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_overlap _ready _row_accessor _column_accessor/); |
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__PACKAGE__->mk_accessors(qw/pad padding row_major column_major/); |
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sub _rows { |
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my $data = shift; |
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return __PACKAGE__->new(data => $data, @_)->rows; |
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} |
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sub _columns { |
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my $data = shift; |
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return __PACKAGE__->new(data => $data, @_)->columns; |
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} |
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=head1 EXPORTS |
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=over 4 |
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=item rows( , ... ) |
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=item rows( data => , ... ) |
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Extracts and returns the rows of the array. |
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A shortcut to ->new, see Data::Tabulator->new for parameter specification and more information. |
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=item columns( , ... ) |
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=item columns( data => , ... ) |
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Extracts and returns the columns of the array. |
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A shortcut to ->new, see Data::Tabulator->new for parameter specification and more information. |
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=back |
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=head1 METHODS |
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=over 4 |
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=item Data::Tabulator->new( , ... ) |
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=item Data::Tabulator->new( data => , ... ) |
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The first argument to new may be an array (a list reference). |
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Alternatively, you can pass in the array via the "data" parameter. |
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The following parameters are also accepted: |
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=over 4 |
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data => The array (list reference) to turn into a table. |
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rows => The number of rows the table should have. |
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columns => The number of columns the table should have. |
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pad => A true/false indicator on whether to pad if the array is not long enough. The default is not to pad. |
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padding => The padding data to use if the array is not long enough (not a full M x N table). The default is undef. |
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row_major => A true value indicates that the array data is in row-major order. This is the default. |
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column_major => A true value indicates that the array data is in column-major order. |
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=back |
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Note: passing in "padding" and not specifying the "pad" option will automatically turn "pad" on. |
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=cut |
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sub new { |
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my $self = bless {}, shift; |
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my $data = shift if ref $_[0] eq "ARRAY"; |
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local %_ = @_; |
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$self->data($data || $_{data}); |
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$self->_row_count($_{rows} || $_{row_count}); |
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$self->_column_count($_{columns} || $_{column_count}); |
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$self->pad($_{pad} || ! exists $_{pad} && exists $_{padding}); |
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$self->padding($_{padding}); |
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$self->row_major($_{row_major}); |
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$self->column_major($_{column_major}); |
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$self->row_major(1) unless $self->column_major; |
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$self->_overlap($_{overlap} || 0); |
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$self->_ready(0); |
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return $self; |
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} |
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sub _minor_accessor($$$$$$$) { |
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my ($major_offset, $major_count, $minor_count, $minor_index, $data, $padder, $pad) = @_; |
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return () if $minor_index >= $minor_count || $minor_index < 0; |
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my $no_pad = ! $pad; |
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my $data_size = @$data; |
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my @minor; |
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my $index = $minor_index; |
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162
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for (my $major_index = 0; $major_index < $major_count; $major_index++) { |
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push(@minor, $index < $data_size ? $data->[$index] : ($no_pad ? () : $padder)); |
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$index += $major_offset; |
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} |
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return \@minor; |
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} |
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sub _major_accessor($$$$$$$) { |
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my ($major_offset, $major_count, $minor_count, $major_index, $data, $padder, $pad) = @_; |
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return () if $major_index >= $major_count || $major_index < 0; |
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my $no_pad = ! $pad; |
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my $data_size = @$data; |
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my ($start, $end, $padding); |
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$start = $major_offset * $major_index; |
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$end = $major_offset * $major_index + $minor_count - 1; |
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$end = $start if $end < $start; |
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if ($end >= $data_size) { |
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$padding = ($end - $data_size) + 1; |
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$end = $data_size - 1; |
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} |
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return () if $start >= $data_size; |
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return [ @$data[$start .. $end], |
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(!$no_pad) && $padding ? (($padder) x $padding) : () ]; |
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} |
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192
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# if ($row_count) { |
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# if ($data_size < $row_count) { |
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# $row_count = $data_size; |
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# $column_count = 1; |
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# $column_offset = 0; |
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# } |
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# else { |
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# $column_offset = $row_count - $overlap; |
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# $column_count = int ($data_size / $column_offset) |
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# + ($data_size % $column_offset > $overlap ? 1 : 0) |
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# } |
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# } |
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# elsif ($column_count) { |
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# if ($data_size < $column_count) { |
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# $column_count = $data_size; |
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# $row_count = 1; |
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# $column_offset = 1; |
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# } |
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# else { |
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# $column_offset = int ($data_size / $column_count) |
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# + ($data_size % $column_count > $overlap ? 1 : 0); |
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# $row_count = $column_offset + $overlap; |
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# } |
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# } |
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sub _calculate { |
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my $self = shift; |
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my $data = $self->data; |
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my $data_size = @$data; |
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my $row_count = $self->_row_count; |
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my $column_count = $self->_column_count; |
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my $padding = $self->padding; |
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my $pad = $self->pad; |
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my $row_major = $self->row_major; |
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my $column_major = $self->column_major; |
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my ($row_offset, $column_offset); |
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if ($column_major) { |
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if ($row_count) { |
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if ($data_size < $row_count) { |
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$row_count = $data_size; |
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$column_count = 1; |
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$column_offset = 0; |
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} |
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else { |
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$column_offset = $row_count; |
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$column_count = ceil($data_size / $column_offset); |
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# $column_count = int ($data_size / $column_offset) + |
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# ($data_size % $column_offset ? 1 : 0); |
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} |
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} |
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elsif ($column_count) { |
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if ($data_size < $column_count) { |
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$column_count = $data_size; |
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$row_count = 1; |
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$column_offset = 1; |
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} |
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else { |
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$column_offset = ceil($data_size / $column_count); |
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# $column_offset = int ($data_size / $column_count) + |
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# ($data_size % $column_count ? 1 : 0); |
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$row_count = $column_offset; |
256
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} |
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} |
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else { |
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$row_count = $data_size; |
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$column_count = 1; |
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$column_offset = 0; |
262
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} |
263
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$self->_row_accessor(sub { |
264
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8
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8
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39
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return _minor_accessor($column_offset, $column_count, $row_count, shift, $data, $padding, $pad); |
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119
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}); |
266
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$self->_column_accessor(sub { |
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11
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62
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return _major_accessor($column_offset, $column_count, $row_count, shift, $data, $padding, $pad); |
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235
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}); |
269
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} |
270
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else { # Assume row major |
271
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100
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87
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if ($column_count) { |
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272
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50
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80
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if ($data_size < $column_count) { |
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0
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$column_count = $data_size; |
274
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$row_count = 1; |
275
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$row_offset = 0; |
276
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} |
277
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else { |
278
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50
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51
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$row_offset = $column_count; |
279
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179
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$row_count = ceil($data_size / $row_offset); |
280
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} |
281
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} |
282
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elsif ($row_count) { |
283
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5
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50
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8
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if ($data_size < $row_count) { |
284
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0
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0
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$row_count = $data_size; |
285
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0
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0
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$column_count = 1; |
286
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0
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$row_offset = 1; |
287
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} |
288
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else { |
289
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5
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25
|
$row_offset = ceil($data_size / $row_count); |
290
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5
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9
|
$column_count = $row_offset; |
291
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} |
292
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} |
293
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else { |
294
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0
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0
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$column_count = $data_size; |
295
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0
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0
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$row_count = 1; |
296
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0
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0
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$row_offset = 0; |
297
|
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} |
298
|
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$self->_row_accessor(sub { |
299
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24
|
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24
|
|
114
|
return _major_accessor($row_offset, $row_count, $column_count, shift, $data, $padding, $pad); |
300
|
55
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251
|
}); |
301
|
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$self->_column_accessor(sub { |
302
|
17
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|
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17
|
|
81
|
return _minor_accessor($row_offset, $row_count, $column_count, shift, $data, $padding, $pad); |
303
|
55
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467
|
}); |
304
|
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} |
305
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306
|
80
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|
592
|
$self->_row_count($row_count); |
307
|
80
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|
434
|
$self->_column_count($column_count); |
308
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|
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# $self->_column_offset($column_offset); |
309
|
80
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381
|
$self->_reset; |
310
|
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311
|
80
|
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432
|
return ($row_count, $column_count); |
312
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} |
313
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314
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=item $table->data |
315
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316
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=item $table->data( ) |
317
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318
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Return a reference to the underlying array of the table. |
319
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320
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Alternatively, make $table use the specified . |
321
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322
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When setting $table->data, make sure you're passing in a list reference. |
323
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324
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=cut |
325
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326
|
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sub data { |
327
|
96
|
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|
96
|
1
|
98
|
my $self = shift; |
328
|
96
|
100
|
|
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|
194
|
if (@_) { |
329
|
16
|
|
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|
48
|
$self->_data(shift); |
330
|
16
|
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117
|
$self->_reset; |
331
|
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} |
332
|
96
|
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|
280
|
return $self->_data; |
333
|
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|
} |
334
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335
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=item $table->width |
336
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337
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|
Return the width of the table (the number of columns). |
338
|
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339
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|
=cut |
340
|
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341
|
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|
|
sub width { |
342
|
2
|
|
|
2
|
1
|
3
|
my $self = shift; |
343
|
2
|
50
|
|
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|
6
|
$self->_calculate unless $self->_ready; |
344
|
2
|
|
|
|
|
5
|
return ($self->_column_count) |
345
|
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|
|
} |
346
|
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347
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|
|
=item $table->height |
348
|
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|
349
|
|
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|
|
Return the height of the table (the number of rows). |
350
|
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|
351
|
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|
|
=cut |
352
|
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|
353
|
|
|
|
|
|
|
sub height { |
354
|
2
|
|
|
2
|
1
|
10
|
my $self = shift; |
355
|
2
|
50
|
|
|
|
5
|
$self->_calculate unless $self->_ready; |
356
|
2
|
|
|
|
|
7
|
return ($self->_row_count) |
357
|
|
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|
|
} |
358
|
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|
359
|
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|
|
=item $table->dimensions |
360
|
|
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|
361
|
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|
|
=item $table->geometry |
362
|
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|
363
|
|
|
|
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|
|
Return the width and height of the table. |
364
|
|
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|
365
|
|
|
|
|
|
|
In scalar context, this will return a two-element array. |
366
|
|
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|
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|
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|
367
|
|
|
|
|
|
|
my ($width, $height) = $table->geometry; |
368
|
|
|
|
|
|
|
my $geometry = $table->geometry; |
369
|
|
|
|
|
|
|
$width = $geometry->[0]; |
370
|
|
|
|
|
|
|
$height = $geometry->[1]; |
371
|
|
|
|
|
|
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|
372
|
|
|
|
|
|
|
=cut |
373
|
|
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|
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|
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|
374
|
|
|
|
|
|
|
sub dimensions { |
375
|
2
|
|
|
2
|
1
|
716
|
my $self = shift; |
376
|
2
|
100
|
|
|
|
12
|
return wantarray ? ($self->width, $self->height) : [$self->width, $self->height]; |
377
|
|
|
|
|
|
|
} |
378
|
|
|
|
|
|
|
*geometry = \&dimensions; |
379
|
|
|
|
|
|
|
|
380
|
|
|
|
|
|
|
=item $table->pad( ) |
381
|
|
|
|
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|
|
|
382
|
|
|
|
|
|
|
Toggle padding on/off. |
383
|
|
|
|
|
|
|
|
384
|
|
|
|
|
|
|
=item $table->padding( ) |
385
|
|
|
|
|
|
|
|
386
|
|
|
|
|
|
|
Set the padding data to use. |
387
|
|
|
|
|
|
|
|
388
|
|
|
|
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|
|
=item $table->row_major |
389
|
|
|
|
|
|
|
|
390
|
|
|
|
|
|
|
Return true if the data for $table is in row-major order. |
391
|
|
|
|
|
|
|
|
392
|
|
|
|
|
|
|
=item $table->column_major |
393
|
|
|
|
|
|
|
|
394
|
|
|
|
|
|
|
Return true if the data for $table is in column-major order. |
395
|
|
|
|
|
|
|
|
396
|
|
|
|
|
|
|
=item $table->rows |
397
|
|
|
|
|
|
|
|
398
|
|
|
|
|
|
|
Return an array of rows in the table. |
399
|
|
|
|
|
|
|
|
400
|
|
|
|
|
|
|
=item $table->rows( ) |
401
|
|
|
|
|
|
|
|
402
|
|
|
|
|
|
|
Set the number of rows in the table to . This is equivalent to passing in row_count to the new method. |
403
|
|
|
|
|
|
|
As a side effect, this will change the number of columns in table. |
404
|
|
|
|
|
|
|
|
405
|
|
|
|
|
|
|
Does not return anything. |
406
|
|
|
|
|
|
|
|
407
|
|
|
|
|
|
|
=cut |
408
|
|
|
|
|
|
|
|
409
|
|
|
|
|
|
|
sub rows { |
410
|
11
|
|
|
11
|
1
|
21
|
my $self = shift; |
411
|
11
|
100
|
|
|
|
23
|
if (@_) { |
412
|
2
|
50
|
|
|
|
12
|
return _rows(@_) unless blessed $self; |
413
|
0
|
|
|
|
|
0
|
$self->_row_count(shift); |
414
|
0
|
|
|
|
|
0
|
$self->_reset; |
415
|
|
|
|
|
|
|
} |
416
|
|
|
|
|
|
|
else { |
417
|
9
|
50
|
|
|
|
19
|
$self->_calculate unless $self->_ready; |
418
|
|
|
|
|
|
|
|
419
|
9
|
|
|
|
|
24
|
my $row_count = $self->_row_count; |
420
|
|
|
|
|
|
|
|
421
|
9
|
|
|
|
|
43
|
return [ map { $self->row($_) } (0 .. $row_count - 1) ]; |
|
31
|
|
|
|
|
60
|
|
422
|
|
|
|
|
|
|
} |
423
|
|
|
|
|
|
|
} |
424
|
|
|
|
|
|
|
|
425
|
|
|
|
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|
|
=item $table->columns |
426
|
|
|
|
|
|
|
|
427
|
|
|
|
|
|
|
Return an array of columns in the table. |
428
|
|
|
|
|
|
|
|
429
|
|
|
|
|
|
|
=item $table->columns( ) |
430
|
|
|
|
|
|
|
|
431
|
|
|
|
|
|
|
Set the number of columns in the table to . This is equivalent to passing in column_count to the new method. |
432
|
|
|
|
|
|
|
As a side effect, this will change the number of rows in table. |
433
|
|
|
|
|
|
|
|
434
|
|
|
|
|
|
|
Does not return anything. |
435
|
|
|
|
|
|
|
|
436
|
|
|
|
|
|
|
=cut |
437
|
|
|
|
|
|
|
|
438
|
|
|
|
|
|
|
sub columns { |
439
|
7
|
|
|
7
|
1
|
13
|
my $self = shift; |
440
|
7
|
50
|
|
|
|
13
|
if (@_) { |
441
|
0
|
0
|
|
|
|
0
|
return _columns(@_) unless blessed $self; |
442
|
0
|
|
|
|
|
0
|
$self->_column_count(shift); |
443
|
0
|
|
|
|
|
0
|
$self->_reset; |
444
|
|
|
|
|
|
|
} |
445
|
|
|
|
|
|
|
else { |
446
|
7
|
50
|
|
|
|
17
|
$self->_calculate unless $self->_ready; |
447
|
|
|
|
|
|
|
|
448
|
7
|
|
|
|
|
16
|
my $column_count = $self->_column_count; |
449
|
|
|
|
|
|
|
|
450
|
7
|
|
|
|
|
37
|
return [ map { $self->column($_) } (0 .. $column_count - 1) ]; |
|
27
|
|
|
|
|
60
|
|
451
|
|
|
|
|
|
|
} |
452
|
|
|
|
|
|
|
} |
453
|
|
|
|
|
|
|
|
454
|
|
|
|
|
|
|
sub _reset { |
455
|
96
|
|
|
96
|
|
130
|
my $self = shift; |
456
|
96
|
|
|
|
|
199
|
$self->_ready(0); |
457
|
|
|
|
|
|
|
} |
458
|
|
|
|
|
|
|
|
459
|
|
|
|
|
|
|
=item $table->row( ) |
460
|
|
|
|
|
|
|
|
461
|
|
|
|
|
|
|
Return row |
462
|
|
|
|
|
|
|
|
463
|
|
|
|
|
|
|
should be a number from 0 to $tables->rows - 1 |
464
|
|
|
|
|
|
|
|
465
|
|
|
|
|
|
|
=cut |
466
|
|
|
|
|
|
|
|
467
|
|
|
|
|
|
|
sub row { |
468
|
32
|
|
|
32
|
1
|
666
|
my $self = shift; |
469
|
32
|
|
|
|
|
33
|
my $row = shift; |
470
|
|
|
|
|
|
|
|
471
|
32
|
50
|
|
|
|
71
|
$self->_calculate unless $self->_ready; |
472
|
|
|
|
|
|
|
|
473
|
32
|
|
|
|
|
74
|
return $self->_row_accessor->($row); |
474
|
|
|
|
|
|
|
} |
475
|
|
|
|
|
|
|
|
476
|
|
|
|
|
|
|
=item $table->column( ) |
477
|
|
|
|
|
|
|
|
478
|
|
|
|
|
|
|
Return column |
479
|
|
|
|
|
|
|
|
480
|
|
|
|
|
|
|
should be a number from 0 to $tables->columns - 1 |
481
|
|
|
|
|
|
|
|
482
|
|
|
|
|
|
|
=cut |
483
|
|
|
|
|
|
|
|
484
|
|
|
|
|
|
|
sub column { |
485
|
28
|
|
|
28
|
1
|
33
|
my $self = shift; |
486
|
28
|
|
|
|
|
31
|
my $column = shift; |
487
|
|
|
|
|
|
|
|
488
|
28
|
50
|
|
|
|
61
|
$self->_calculate unless $self->_ready; |
489
|
|
|
|
|
|
|
|
490
|
28
|
|
|
|
|
78
|
return $self->_column_accessor->($column); |
491
|
|
|
|
|
|
|
} |
492
|
|
|
|
|
|
|
|
493
|
|
|
|
|
|
|
=item $table->as_string( [], [] ) |
494
|
|
|
|
|
|
|
|
495
|
|
|
|
|
|
|
Return the table as a simple string. |
496
|
|
|
|
|
|
|
|
497
|
|
|
|
|
|
|
By default, rows are separated by "\n" and columns are separated by " ". |
498
|
|
|
|
|
|
|
|
499
|
|
|
|
|
|
|
=cut |
500
|
|
|
|
|
|
|
|
501
|
|
|
|
|
|
|
sub as_string { |
502
|
0
|
|
|
0
|
1
|
|
my $self = shift; |
503
|
0
|
|
|
|
|
|
my $row_separator = shift; |
504
|
0
|
|
|
|
|
|
my $column_separator = shift; |
505
|
0
|
0
|
|
|
|
|
$row_separator = "\n" unless defined $row_separator; |
506
|
0
|
0
|
|
|
|
|
$column_separator = " " unless defined $column_separator; |
507
|
0
|
|
|
|
|
|
return join $row_separator, map { join $column_separator, @$_ } @{ $self->rows }; |
|
0
|
|
|
|
|
|
|
|
0
|
|
|
|
|
|
|
508
|
|
|
|
|
|
|
} |
509
|
|
|
|
|
|
|
|
510
|
|
|
|
|
|
|
=back |
511
|
|
|
|
|
|
|
|
512
|
|
|
|
|
|
|
=head1 SEE ALSO |
513
|
|
|
|
|
|
|
|
514
|
|
|
|
|
|
|
Data::Tabulate, Data::Table |
515
|
|
|
|
|
|
|
|
516
|
|
|
|
|
|
|
=head1 AUTHOR |
517
|
|
|
|
|
|
|
|
518
|
|
|
|
|
|
|
Robert Krimen, C<< >> |
519
|
|
|
|
|
|
|
|
520
|
|
|
|
|
|
|
=head1 BUGS |
521
|
|
|
|
|
|
|
|
522
|
|
|
|
|
|
|
Please report any bugs or feature requests to |
523
|
|
|
|
|
|
|
C, or through the web interface at |
524
|
|
|
|
|
|
|
L. |
525
|
|
|
|
|
|
|
I will be notified, and then you'll automatically be notified of progress on |
526
|
|
|
|
|
|
|
your bug as I make changes. |
527
|
|
|
|
|
|
|
|
528
|
|
|
|
|
|
|
=head1 SUPPORT |
529
|
|
|
|
|
|
|
|
530
|
|
|
|
|
|
|
You can find documentation for this module with the perldoc command. |
531
|
|
|
|
|
|
|
|
532
|
|
|
|
|
|
|
perldoc Data::Tabulator |
533
|
|
|
|
|
|
|
|
534
|
|
|
|
|
|
|
You can also look for information at: |
535
|
|
|
|
|
|
|
|
536
|
|
|
|
|
|
|
=over 4 |
537
|
|
|
|
|
|
|
|
538
|
|
|
|
|
|
|
=item * AnnoCPAN: Annotated CPAN documentation |
539
|
|
|
|
|
|
|
|
540
|
|
|
|
|
|
|
L |
541
|
|
|
|
|
|
|
|
542
|
|
|
|
|
|
|
=item * CPAN Ratings |
543
|
|
|
|
|
|
|
|
544
|
|
|
|
|
|
|
L |
545
|
|
|
|
|
|
|
|
546
|
|
|
|
|
|
|
=item * RT: CPAN's request tracker |
547
|
|
|
|
|
|
|
|
548
|
|
|
|
|
|
|
L |
549
|
|
|
|
|
|
|
|
550
|
|
|
|
|
|
|
=item * Search CPAN |
551
|
|
|
|
|
|
|
|
552
|
|
|
|
|
|
|
L |
553
|
|
|
|
|
|
|
|
554
|
|
|
|
|
|
|
=back |
555
|
|
|
|
|
|
|
|
556
|
|
|
|
|
|
|
=head1 ACKNOWLEDGEMENTS |
557
|
|
|
|
|
|
|
|
558
|
|
|
|
|
|
|
=head1 COPYRIGHT & LICENSE |
559
|
|
|
|
|
|
|
|
560
|
|
|
|
|
|
|
Copyright 2007 Robert Krimen, all rights reserved. |
561
|
|
|
|
|
|
|
|
562
|
|
|
|
|
|
|
This program is free software; you can redistribute it and/or modify it |
563
|
|
|
|
|
|
|
under the same terms as Perl itself. |
564
|
|
|
|
|
|
|
|
565
|
|
|
|
|
|
|
=cut |
566
|
|
|
|
|
|
|
|
567
|
|
|
|
|
|
|
1; # End of Data::Tabulator |