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# You may distribute under the terms of either the GNU General Public License |
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# or the Artistic License (the same terms as Perl itself) |
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# |
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# (C) Paul Evans, 2023 -- leonerd@leonerd.org.uk |
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use v5.26; |
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use warnings; |
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use experimental 'signatures'; |
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package App::sdview::Style 0.12; |
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use Convert::Color; |
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use Convert::Color::XTerm 0.06; |
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=head1 NAME |
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C - store formatting style information for C |
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=head1 DESCRIPTION |
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This module stores formatting style information for L text output |
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formatters, such a L or |
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L. |
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=head2 Config File |
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Style information can be overridden by the user, supplying a |
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L-style file at F<$HOME/.sdviewrc>. Formatting for each kind of |
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paragraph is provided in a section called C, and each individual |
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key gives formatting values. |
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[Para head1] |
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bold = 0|1 |
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italic = 0|1 |
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monospace = 0|1 |
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blank_after = 0|1 |
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under = NUM |
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margin = NUM |
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[Para head2] |
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... |
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The value for keys that set colours should be a string suitable for |
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L<< Convert::Color->new >>: |
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[Para head1] |
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fg = vga:red |
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bg = xterm:184 |
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=cut |
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my %FORMATSTYLES = ( |
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B => { bold => 1 }, |
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I => { italic => 1 }, |
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F => { italic => 1, under => 1 }, |
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C => { monospace => 1, bg => Convert::Color->new( "xterm:235" ) }, |
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L => { under => 1, fg => Convert::Color->new( "xterm:rgb(3,3,5)" ) }, # light blue |
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); |
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sub convert_str ( $pkg, $s ) |
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return $s->clone( |
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convert_tags => { |
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( map { $_ => do { my $k = $_; sub { $FORMATSTYLES{$k}->%* } } } keys %FORMATSTYLES ), |
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}, |
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); |
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} |
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my %PARASTYLES = ( |
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head1 => { fg => Convert::Color->new( "vga:yellow" ), bold => 1 }, |
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head2 => { fg => Convert::Color->new( "vga:cyan" ), bold => 1, margin => 2 }, |
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head3 => { fg => Convert::Color->new( "vga:green" ), bold => 1, margin => 4 }, |
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head4 => { fg => Convert::Color->new( "xterm:217" ), under => 1, margin => 5 }, |
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plain => { margin => 6, blank_after => 1 }, |
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verbatim => { margin => 8, blank_after => 1, $FORMATSTYLES{C}->%* }, |
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list => { margin => 6 }, |
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item => { blank_after => 1 }, |
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leader => { bold => 1 }, |
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table => { margin => 8 }, |
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"table-heading" => { bold => 1 }, |
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); |
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sub load_config ( $pkg, $path ) |
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{ |
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require Config::Tiny; |
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# For unit testing, also accept a globref |
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my $config = ( ref $path ) ? Config::Tiny->read_string( do { local $/; <$path> } ) |
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: Config::Tiny->read( $path ); |
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foreach my $section ( sort keys %$config ) { |
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if( $section =~ m/^Para (.*)$/ ) { |
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my $para = $1; |
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unless( $PARASTYLES{$para} ) { |
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warn "Unrecognised [Para $para] style in $path\n"; |
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next; |
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} |
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foreach my $stylekey ( sort keys $config->{$section}->%* ) { |
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my $val = $config->{$section}{$stylekey}; |
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if( $stylekey =~ m/^(fg|bg)$/ ) { |
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$val = Convert::Color->new( $val ); |
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} |
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elsif( $stylekey =~ m/^(bold|italic|monospace|blank_after)$/ ) { |
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$val = !!$val; |
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} |
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elsif( $stylekey =~ m/^(under|margin)$/ ) { |
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$val = 0+$val; |
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} |
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else { |
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warn "Unrecognised [Para $para] key $stylekey in $path\n"; |
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next; |
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} |
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$PARASTYLES{$para}{$stylekey} = $val; |
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} |
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} |
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} |
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} |
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sub para_style ( $pkg, $type ) |
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{ |
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$PARASTYLES{$type} or |
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die "Unrecognised paragraph style for $type"; |
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return $PARASTYLES{$type}; |
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} |
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=head1 AUTHOR |
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Paul Evans |
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=cut |
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0x55AA; |