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package Lab::Moose::DataFile::Gnuplot::Compressed; |
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$Lab::Moose::DataFile::Gnuplot::Compressed::VERSION = '3.880'; |
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#ABSTRACT: Text based data file ('Gnuplot style'), auto-compressed |
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2422
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use v5.20; |
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use warnings; |
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use strict; |
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use Moose; |
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use File::Basename qw/dirname basename/; |
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use Lab::Moose::Catfile 'our_catfile'; |
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use Module::Load; |
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use Carp; |
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extends 'Lab::Moose::DataFile::Gnuplot'; |
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has compression => ( |
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is => 'ro', |
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isa => 'Str', |
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default => 'Bzip2', |
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); |
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sub _suffix { |
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my %suffixtable=( |
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None => '', |
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Gzip => '.gz', |
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Bzip2 => '.bz2', |
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Lzf => '.lzf', |
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Xz => '.xz' |
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); |
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my $module = shift; |
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if (defined $suffixtable{$module}) { |
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return $suffixtable{$module}; |
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} else { |
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croak "Unsupported compression module $module"; |
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}; |
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} |
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sub _modify_file_path { |
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my $self = shift; |
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my $path = shift; |
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return $path . _suffix($self->compression()); |
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} |
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sub _open_filehandle { |
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my $self = shift; |
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my $path = shift; |
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my $fh; |
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if ($self->compression() eq 'None') { |
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$fh = super(); |
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} else { |
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my $modulename = "IO::Compress::" . $self->compression(); |
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load $modulename; |
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$fh = ("IO::Compress::".$self->compression())->new($path) |
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or croak "cannot open '$path': $!"; |
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} |
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795
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return $fh; |
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} |
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sub add_plot { |
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croak("Compressed data files do not (yet) support plots."); |
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} |
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sub refresh_plots { |
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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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Lab::Moose::DataFile::Gnuplot::Compressed - Text based data file ('Gnuplot style'), auto-compressed |
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90
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=head1 VERSION |
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version 3.880 |
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=head1 SYNOPSIS |
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use Lab::Moose; |
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my $folder = datafolder(); |
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my $file = datafile( |
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type => 'Gnuplot::Compressed', |
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folder => $folder, |
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filename => 'gnuplot-file.dat', |
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columns => [qw/time voltage temp/] |
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); |
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$file->log(time => 1, voltage => 2, temp => 3); |
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=head1 METHODS |
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=head2 new |
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Supports the following attributes in addition to the |
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L<Lab::Moose::DataFile::Gnuplot> requirements: |
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=over |
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=item * compression |
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Compression type; defaults to 'Bzip2', which is also the only value |
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that has been tested so far. The following values are possible: |
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None |
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Gzip |
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Bzip2 |
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Lzf |
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Xz |
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Note that (except for None) this requires the corresponding |
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IO::Compress:: modules to be available; only Gzip and Bzip2 are |
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part of core perl. |
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133
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=back |
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This datafile type does not support any plots. |
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=head1 COPYRIGHT AND LICENSE |
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This software is copyright (c) 2023 by the Lab::Measurement team; in detail: |
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Copyright 2018 Andreas K. Huettel, Simon Reinhardt |
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2020 Andreas K. Huettel |
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145
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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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148
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=cut |