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@ -7,14 +7,28 @@ use utf8;
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use base 'Subtitle::BASE'; |
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use constant SSA_STYLE_FMT => [qw(name fontname fontsize primarycolour secondarycolour |
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tertiarycolour backcolour bold italic |
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borderstyle outline shadow alignment marginl marginr marginv alphalevel encoding)]; |
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use constant ASS_STYLE_FMT => [qw(name fontname fontsize primarycolour secondarycolour |
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outlinecolour backcolour bold italic underline strikeout scalex scaley spacing angle |
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borderstyle outline shadow alignment marginl marginr marginv encoding)]; |
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use constant SSA_EVENT_FMT => [qw(marked start end style name marginl marginr marginv effect text)]; |
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use constant ASS_EVENT_FMT => [qw(layer start end style name marginl marginr marginv effect text)]; |
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sub new { |
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my ($class, %args) = @_; |
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my $self = { |
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debug => 0, |
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eol => "\n", |
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type => undef, |
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%args, |
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events => [], |
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log => [], |
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headers => {}, |
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styles => [], |
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events => [], |
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log => [], |
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}; |
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return bless($self, $class); |
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@ -22,7 +36,6 @@ sub new {
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sub parse_timing { |
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my ($self, $str) = @_; |
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... |
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my $time = 0.0; |
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return unless $str =~ m/(\d+):(\d+):(\d+)([.,])(\d+)/oi; |
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my ($hrs, $min, $sec, $delim, $msec) = ($1, $2, $3, $4, $5); |
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@ -54,14 +67,168 @@ sub parse_timing {
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return $time; |
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} |
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sub new_event { return +{ id => undef, timing => undef, style => undef, text => undef }; } |
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sub parse_header { |
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my ($self, $linenum, $line) = @_; |
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return if $line =~ m/^\s*;/; # comment |
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my ($name, $value) = ($line =~ m/^(.+):\s*(.*)$/o); |
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if ($name and not defined $value) { |
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$self->log(debug => "Header line with empty value at $linenum, skipped: $line"); |
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return; |
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} |
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unless ($name) { |
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$self->log(debug => "Can't parse header line at $linenum: $line"); |
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return; |
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} |
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$self->log(warn => "Duplicate header $name at line $linenum, overwriting") |
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if (exists $self->{headers}->{$name}); |
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$self->{headers}->{$name} = $value; |
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if (lc($name) eq 'scripttype') { |
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$self->{type} = (lc($value) eq 'v4.00+') ? 'ass' : 'ssa'; |
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$self->log(debug => "Set type to $self->{type} because of line $linenum: $line"); |
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} |
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return; |
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} |
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sub parse_style { |
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my ($self, $linenum, $line) = @_; |
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my ($rest) = ($line =~ m/^\s*Style:\s*(.+)/oi); |
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unless ($rest) { |
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$self->log(warn => "Can't parse style at line $linenum: $line"); |
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return; |
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} |
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my $fields = scalar @{ $self->{style_fmt} }; |
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my @values = split /\s*,\s*/, $rest; |
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if($fields != scalar @values) { |
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$self->log(warn => "Style line fields at $linenum not equals number of style format fields"); |
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return; |
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} |
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my $style = {}; |
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for (my $i = 0; $i < $fields; $i++) { |
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$style->{$self->{style_fmt}->[$i]} = $values[$i]; |
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} |
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push @{ $self->{styles} }, $style; |
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return; |
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} |
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sub parse_event { |
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my ($self, $linenum, $line) = @_; |
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my ($type, $rest) = ($line =~ m/^\s*(Dialogue):\s*(.+)/oi); |
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unless ($rest) { |
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$self->log(warn => "Can't parse style at line $linenum: $line"); |
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return; |
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} |
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my $fields = scalar @{ $self->{event_fmt} }; |
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my @values = split /\s*,\s*/, $rest, $fields; |
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if($fields > scalar @values) { |
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$self->log(warn => "Event line fields at $linenum less than number of style format fields ($fields)"); |
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return; |
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} |
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my $event = { type => lc($type) }; |
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for (my $i = 0; $i < $fields; $i++) { |
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$event->{$self->{event_fmt}->[$i]} = $values[$i]; |
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} |
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foreach my $key (qw(start end)) { |
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next unless $event->{$key}; |
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$event->{$key} = $self->parse_timing($event->{$key}); |
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} |
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$event->{marked} =~ s/^Marked=\s*//oi |
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if ($self->{type} eq 'ssa'); |
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push @{ $self->{events} }, $event; |
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return; |
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} |
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sub new_event { ... } |
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sub parse { |
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my ($self, $lines) = @_; |
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my $linenum = 0; |
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my $event; |
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my $section; |
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foreach my $line (@$lines) { |
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$linenum++; |
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$line = $self->chomp($line); |
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$line = $self->trim($line); |
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next unless $line; |
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study $line; |
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# check section switch |
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if ($line =~ m/^\s*\[(.+)\]\s*/o) { |
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my $name = $1; |
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given ($name) { |
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when (m/script\s+info/oi) { $section = "header"; } |
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when (m/events/oi) { $section = "events"; } |
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when (m/v4(\+)?\s+styles/oi) { |
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$section = "styles"; |
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unless ($self->{type}) { |
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$self->{type} = ($1) ? 'ass' : 'ssa'; |
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$self->log(warn => "Set type to $self->{type} because of $linenum (fallback mode)"); |
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} |
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} |
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default { |
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$self->log(debug => "Unknown section at line $linenum: $line"); |
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} |
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} |
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next; |
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} |
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# |
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unless ($section) { |
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$self->log(warn => "Line $linenum outside any section: $line"); |
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next; |
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} |
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if ($section eq 'header') { |
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$self->parse_header($linenum, $line); |
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next; |
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} |
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if ($section eq 'styles') { |
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if ($line =~ m/^\s*Format:\s*(.*)/oi) { |
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if ($self->{style_fmt}) { |
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$self->log(error => "Style format found at line $linenum, but already set before"); |
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next; |
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} |
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my @fmt = map { lc($_) } split(/\s*,\s*/o, $1); |
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$self->{style_fmt} = \@fmt; |
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$self->log(debug => "Set style format from line $linenum"); |
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next; |
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} |
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unless ($self->{style_fmt}) { |
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$self->log(warn => "Style format still not set, assuming default for $self->{type} type"); |
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$self->{style_fmt} = ($self->{type} and $self->{type} eq 'ass') |
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? ASS_STYLE_FMT : SSA_STYLE_FMT; |
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} |
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$self->parse_style($linenum, $line); |
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next; |
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} |
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if ($section eq 'events') { |
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if ($line =~ m/^\s*Format:\s*(.*)/oi) { |
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if ($self->{event_fmt}) { |
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$self->log(error => "Event format found at line $linenum, but already set before"); |
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next; |
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} |
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my @fmt = map { lc($_) } split(/\s*,\s*/o, $1); |
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$self->{event_fmt} = \@fmt; |
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$self->log(debug => "Set event format from line $linenum"); |
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next; |
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} |
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unless ($self->{event_fmt}) { |
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$self->log(warn => "Event format still not set, assuming default for $self->{type} type"); |
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$self->{event_fmt} = ($self->{type} and $self->{type} eq 'ass') |
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? ASS_EVENT_FMT : SSA_EVENT_FMT; |
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} |
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$self->parse_event($linenum, $line); |
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next; |
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} |
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$self->log(warn => "unrecognized line at $linenum: $line"); |
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} |
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return scalar @{ $self->{events} }; |
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