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package Session; |
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# Dobrica Pavlinusic, <dpavlin@rot13.org> 08/05/07 14:27:15 CEST |
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use strict; |
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use warnings; |
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use Carp qw/confess croak/; |
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use Data::Dump qw/dump/; |
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use File::Slurp; |
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use POSIX qw/strftime/; |
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use base qw/Class::Accessor/; |
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__PACKAGE__->mk_accessors(qw(session_uuid session_path)); |
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=head1 NAME |
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Session - save or load emulator interactive session |
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=head1 DESCRIPTION |
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Sessions are simple perl programs using one function C<event> |
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event( $ticks_wait, 'name', $hash ); |
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Using this, you can refactor your sessions or use perl constructs around |
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them. |
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=head1 FUNCTIONS |
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=head2 record_session |
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$self->record_session( 'name', $value ); |
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=cut |
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my $last_tick = 0; |
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my $t = 0; |
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my @timeline; |
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my $s; |
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sub record_session { |
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my $self = shift; |
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my $name = shift || confess "need name"; |
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my $value = shift || confess "need value"; |
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my $path = $self->session_path; |
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if ( ! $path ) { |
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$path = 'sess/current'; |
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$self->session_path( $path ); |
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if ( -e $path ) { |
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warn "session appending to: $path\n"; |
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} else { |
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warn "session creating: $path\n"; |
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} |
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} |
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if ( @timeline ) { |
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warn "INFO: Aborting recorderd session\n"; |
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@timeline = (); |
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$t = 0; |
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$s = {}; |
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$last_tick = 0; |
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} |
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my $t = $self->app->ticks; |
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my $dt = $t - $last_tick; |
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$last_tick = $t; |
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if ( ! $self->session_uuid ) { |
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my $uuid = strftime('%Y-%m-%d %H:%M:%S',localtime); |
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$self->append_to_file($path, "# $uuid\n"); |
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$self->session_uuid( $uuid ); |
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} |
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$self->append_to_file($path, 'event(', dump( $dt, $name, $value ),");\n"); |
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} |
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sub event { |
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my $dt = shift || croak 'expected dt'; |
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my $name = shift || croak 'expected name'; |
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my $value = shift || croak 'expected value'; |
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$t += $dt; |
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push @timeline, $t; |
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$s->{$t}->{$name} = $value; |
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# warn "## created event($dt,$name,",dump($value),")\n"; |
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} |
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=head2 load_session |
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$self->load_session( '/path/to/session.pl' ); |
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=cut |
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sub load_session { |
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my $self = shift; |
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my $path = shift || confess "no path?"; |
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if ( ! -r $path ) { |
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warn "WARNING: can't open session $path: $!\n"; |
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return; |
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} |
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eval read_file( $path ); |
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warn "session = ",dump( $s ) if $self->can('debug') && $self->debug; |
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my ( $from, $to ) = @timeline[0,-1]; |
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printf "loaded session %.2f-%.2fs with %d events\n", $from / 1000, $to / 1000, $#timeline + 1; |
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} |
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=head2 session_event |
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my $v = $self->session_event('key_pressed'); |
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=cut |
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sub session_event { |
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my $self = shift; |
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return unless @timeline; |
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my $name = shift || confess "no name?"; |
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my $t = $self->app->ticks; |
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# do we have events to trigger? |
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return if ( $t < $timeline[0] ); |
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my $e_t = $timeline[0]; |
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# do we have next event and should we take it? |
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if ( $#timeline > 0 && $t > $timeline[1] ) { |
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shift @timeline; |
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$e_t = $timeline[0]; |
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warn "session_event $e_t $name ",dump( $s->{$e_t}->{$name} )," left ", $#timeline+1, " events\n"; |
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} |
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return $s->{$e_t}->{$name}; |
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} |
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=head1 SEE ALSO |
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L<VRac> |
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=cut |
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1; |