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=head1 NAME |
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Text::Same::ChunkPair |
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=head1 DESCRIPTION |
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A class representing a pair of chunk indexes (generally line numbers) |
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=head1 SYNOPSIS |
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my $pair = new Text::Same::ChunkPair($chunk_index1, $chunk_index2); |
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=head1 METHODS |
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See below. Methods private to this module are prefixed by an |
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underscore. |
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=cut |
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package Text::Same::ChunkPair; |
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use warnings; |
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use strict; |
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use Carp; |
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use vars qw($VERSION); |
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$VERSION = '0.07'; |
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=head2 new |
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Title : new |
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Usage : $pair = new Text::Same::ChunkPair($chunk_index1, $chunk_index2); |
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Function: Creates a new ChunkPair object from two chunk indexes |
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Returns : A Text::Same::ChunkPair object |
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Args : two chunk indexes |
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=cut |
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sub new |
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{ |
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1
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my $self = shift; |
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my $class = ref($self) || $self; |
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if (scalar(@_) != 2) { |
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die "ChunkPair constructor needs 2 integer arguments\n"; |
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} |
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if (!defined $_[0] || !defined $_[1]) { |
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croak "undefined value passed to ChunkPair->new\n"; |
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} |
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my $packed_pair = make_packed_pair(@_); |
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return bless \$packed_pair, $class; |
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} |
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=head2 chunk_index1 |
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Title : chunk_index1 |
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Usage : my $chunk_index = $pair->chunk_index1; |
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Function: return the first chunk_index of this ChunkPair |
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Args : none |
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=cut |
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sub chunk_index1 |
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{ |
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1
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my $self = shift; |
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return (unpack 'II', $$self)[0]; |
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} |
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=head2 chunk_index2 |
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Title : chunk_index2 |
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Usage : my $chunk_index = $pair->chunk_index2; |
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Function: return the second chunk_index of this ChunkPair |
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Args : none |
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=cut |
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sub chunk_index2 |
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{ |
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1
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my $self = shift; |
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return (unpack 'II', $$self)[1]; |
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} |
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=head2 packed_pair |
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Title : packed_pair |
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Usage : my $packed_pair = $chunk_pair->packed_pair(); |
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Function: return a packed representation of this ChunkPair by pack()ing |
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index1 and index2 into a string |
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Args : none |
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=cut |
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sub packed_pair |
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{ |
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my $self = shift; |
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return $$self; |
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} |
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=head2 make_packed_pair |
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Title : make_packed_pair |
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Usage : my $packed_pair = $chunk_pair->make_packed_pair($index1, $index2); |
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Function: return a packed representation of the pair of indexes by pack()ing |
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them into a string |
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Args : two indexes |
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111
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=cut |
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sub make_packed_pair |
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{ |
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return pack 'II', @_; |
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} |
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=head2 as_string |
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Title : as_string |
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Usage : my $str = $match->as_string |
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Function: return a string representation of this ChunkPair |
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Args : none |
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=cut |
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sub as_string |
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{ |
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return $self->chunk_index1 . "<->" . $self->chunk_index2; |
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} |
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=head1 AUTHOR |
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Kim Rutherford |
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=head1 COPYRIGHT & LICENSE |
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Copyright 2005,2006 Kim Rutherford. All rights reserved. |
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This program is free software; you can redistribute it and/or modify it |
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under the same terms as Perl itself. |
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=head1 DISCLAIMER |
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This module is provided "as is" without warranty of any kind. It |
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may redistributed under the same conditions as Perl itself. |
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=cut |
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1; |