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@ -6,50 +6,16 @@ use utf8;
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use Subtitle::Utils qw(:timing); |
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use overload => ( |
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use overload |
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'""' => \&to_string, |
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); |
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my %FIELDS = (); # must be redefined in subclass |
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my $PREFIX = ''; # must be redefined in subclass |
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# options: |
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# * version - 'ssa' for v4 or 'ass' for v4+ |
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sub new { |
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my ($class, %opts) = @_; |
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my $self = { |
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_vers => 'ass', |
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}; |
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bless($self, $class); |
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if ($opts{version} and $opts{version} =~ m{^(ass|ssa)$}oi) { |
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$self->{_vers} = lc($opts{version}); |
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} |
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my @fields = $self->fields(); |
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$self->{_fieldcnt} = scalar @fields; |
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foreach my $field (@fields) { |
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$self->{$field} = ($opts{defaults}) |
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? $FIELDS{$field}->{value} |
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: undef; |
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} |
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return $self; |
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} |
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sub fields { |
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my ($self) = @_; |
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return ($self->{_vers} eq 'ssa') |
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? @FIELDS_SSA |
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: @FIELDS_ASS; |
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} |
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; |
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sub set { |
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my ($self, $opt, $value) = @_; |
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return unless $opt; |
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$opt = lc($opt); |
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return unless exists $self->{$opt}; |
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$self->{$opt} = $value; |
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my ($self, $field, $value) = @_; |
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return unless $field; |
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$field = lc($field); |
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return unless exists $self->{$field}; |
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$self->{$field} = $value; |
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return 1; |
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} |
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@ -59,12 +25,12 @@ sub parse_format_line {
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return unless $line and $line =~ m{^Format:}oi; |
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chomp $line; |
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$line =~ s{^Format:\s+}{}oi; |
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$line =~ s{^Format:\s*}{}oi; |
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my @fields; |
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foreach my $field (split(/,\s*/o, $line)) { |
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$field = lc($field); |
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return unless exists $FIELDS{$field}; |
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return unless exists $self->{_fields}->{$field}; |
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push @fields, $field; |
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} |
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@ -79,22 +45,25 @@ sub parse_format_line {
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# f - float, 6.01 or 6 if no fractional part |
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# x - hex-number, &H00AABBCC for ASS or decimal number for SSA |
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sub parse { |
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my ($self, $fields, $line) = @_; |
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my ($self, $line, $format) = @_; |
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$format //= $self->{_format}; |
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return unless $fields and ref($fields) eq 'ARRAY'; |
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my $PREFIX = $self->{_prefix}; |
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return unless $line and $line =~ m{^$PREFIX:}oi; |
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return unless $format and ref($format) eq 'ARRAY'; |
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chomp $line; |
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$line =~ s{^$PREFIX:\s*}{}oi; |
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my @values = split /,\s*/o, $line, $self->{_fieldcnt}; |
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my $fieldcnt = scalar @{ $format }; |
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my @values = split /,\s*/o, $line, $fieldcnt; |
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# check that values count match fields count |
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return unless scalar @{ $fields } != scalar @values; |
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return if scalar @values != $fieldcnt; |
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foreach my $field (@{ $fields }) { |
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my $d = $FIELDS{$field}; |
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foreach my $field (@{ $format }) { |
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my $d = $self->{_fields}->{$field}; |
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my $value = shift @values; |
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if ($t->{type} eq 'x' and $value =~ m<&H([0-9a-f]{8})>oi) { |
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$value = unpack("H8", $1); |
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if ($d->{type} eq 'x' and $value =~ m<&H([0-9a-f]{8})>oi) { |
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$value = hex($1); |
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} elsif ($d->{type} eq 't') { |
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$value = parse_timing($value); |
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return if $value < 0; # parsing failure |
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@ -107,15 +76,13 @@ sub parse {
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sub to_string { |
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my ($self) = @_; |
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my @fields = $self->fields(); |
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my $string = $PREFIX . ' '; |
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my $string = $self->{_prefix} . ' '; |
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my @values = (); |
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foreach my $field (@fields) { |
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my $d = $FIELD{$field}; |
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my $v = $self->{$f} // $d->{value}; |
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if ($d->{type} eq 'x') { |
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$fmt = ($self->{_vers} eq 'ass') ? '&H%08X' : '%d'; |
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$v = sprintf $fmt, $v; |
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foreach my $field (@{ $self->{_fields} }) { |
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my $d = $self->{_fields}->{$field}; |
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my $v = $self->{$field} // $d->{value}; |
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if ($d->{type} eq 'x' and $self->{_vers} eq 'ass') { |
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$v = sprintf '&H%08X', $v; |
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} elsif ($d->{type} eq 'f') { |
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$v = sprintf "%.2f", $v; |
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# hack: make decimal from float if fractional part is zero after round up |
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