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package File::Atomism::Protozoa; |
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=head1 NAME |
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File::Atomism::Protozoa - CAD drawing as an atomised directory |
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=head1 SYNOPSIS |
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A directory that contains multiple drawing entities each represented |
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by a single file. |
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=head1 DESCRIPTION |
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A simple file-system directory/folder that contains any number of |
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drawing objects, represented by files; and optionally, any number of |
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further drawings represented by subdirectories. |
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Note that this is not completely analogous to a traditional |
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monolithic CAD file format, as blocks/symbols associated with a |
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drawing are complete drawings in their own right. |
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=cut |
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use strict; |
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use warnings; |
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use SGI::FAM; |
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sub Scan |
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{ |
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my $self = shift; |
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my @freshfiles; |
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my @stalefiles; |
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$self->_init; |
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while ($self->{_fam}->pending) |
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{ |
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my $event = $self->{_fam}->next_event; |
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push (@freshfiles, $event->filename) |
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if ($event->type =~ /^(create|change|exist)$/); |
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push (@stalefiles, $event->filename) |
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if ($event->type eq 'delete'); |
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# mark for canvas erase if file changed or removed |
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$File::Atomism::EVENT->{_old}->{$self->{_path} . $event->filename} = 'TRUE' |
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if ($event->type =~ /^(change|delete)$/); |
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# mark for canvas draw if file new or changed |
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$File::Atomism::EVENT->{_new}->{$self->{_path} . $event->filename} = 'TRUE' |
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if ($event->type =~ /^(create|change|exist)$/); |
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} |
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=pod |
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Files titled "F" or beginning with "." or "_" are not considered part of |
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the data and are therefore ignored. |
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=cut |
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@stalefiles = grep (!/^(DIRTYPE$|[._])/, @stalefiles); |
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@freshfiles = grep (!/^(DIRTYPE$|[._])/, @freshfiles); |
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return \@freshfiles, \@stalefiles; |
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} |
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=pod |
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L (File Activation Monitor) is used to grapple the file list. |
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=cut |
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sub _init |
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{ |
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my $self = shift; |
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unless ($self->{_fam}) |
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{ |
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$self->{_fam} = SGI::FAM->new; |
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$self->{_fam}->monitor ($self->{_path}); |
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} |
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return $self; |
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} |
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# FIXME: needs Clone(), Delete(), Journal() and Rename() methods for elements |
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} |
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1; |