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#!/usr/bin/perl |
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|
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# TODO: texinfo fails on @cindex in title elements etc. *sigh* |
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|
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use Pod::POM; |
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|
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sub escape_texi($) { |
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local $_ = shift; |
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s/([\@\{\}])/\@$1/g; |
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s/\n+/ /g; |
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$_; |
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} |
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|
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sub example { |
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my $text = $_[0]; |
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$text =~ s/\n+$//; |
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$text =~ s/([\@\{\}])/\@$1/g; |
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|
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"\n\n\@example\n" |
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. $text |
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. "\n\@end example\n\n"; |
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} |
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|
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my @nodes; # nodelist |
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my @ctx; # curstack |
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|
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sub out { |
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$ctx[-1]{out} .= join "", @_; |
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} |
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|
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sub TEX::view_seq_code { "\@t{$_[1]}" } |
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sub TEX::view_seq_file { "\@file{$_[1]}" } |
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sub TEX::view_seq_bold { "\@strong{$_[1]}" } |
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sub TEX::view_seq_italic { "\@emph{$_[1]}" } |
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|
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sub TEX::view_seq_space { escape_texi $_[1] } |
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sub TEX::view_seq_text { escape_texi $_[1] } |
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|
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sub TEX::view_seq_link { $_[1] } |
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sub TEX::view_seq_index { |
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"\n\@cindex $_[1]\n$_[1]" |
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} |
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|
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*TXT::view_seq_code = |
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*TXT::view_seq_bold = |
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*TXT::view_seq_italic = |
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*TXT::view_seq_space = |
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*TXT::view_seq_text = |
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*TXT::view_seq_link = |
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*TXT::view_seq_index = sub { $_[1] }; |
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|
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my %ignore = ( |
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"SEE ALSO" => 1, |
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"AUTHOR" => 1, |
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); |
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|
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sub parse_pod { |
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my ($data) = @_; |
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local $out; |
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|
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local $Pod::POM::DEFAULT_VIEW = TEX::; |
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|
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my $parser = new Pod::POM; |
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my $pod = $parser->parse_text ($data) |
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or die; |
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|
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my $walker; $walker = sub { |
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my $n = $_[0]; |
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my $t = $n->type; |
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|
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if ($t eq "text") { |
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out $n->text . "\n\@refill\n"; |
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|
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} elsif ($t eq "pod") { |
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$walker->($_) for $n->content; |
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|
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} elsif ($t eq "verbatim") { |
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out example $n->text; |
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|
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} elsif ($t eq "head1") { |
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|
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return if $ignore{$n->title}; |
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|
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out "\n\@section " . $n->title . "\n"; |
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$walker->($_) for $n->content; |
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out "\n"; |
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|
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} elsif ($t eq "head2") { |
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out "\n\n\@subsection " . $n->title . "\n"; |
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$walker->($_) for $n->content; |
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|
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} elsif ($t eq "over") { |
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out "\n\n\@itemize\n"; |
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$walker->($_) for $n->content; |
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out "\@end itemize\n\n"; |
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|
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} elsif ($t eq "item") { |
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out "\n\n\@item\n" . $n->title . "\n\n"; |
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|
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if ($n->title->present (TXT::) =~ /^\s*([a-zA-Z0-9\-\_]+)\s*=/) { |
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out "\@cindex $1\n"; |
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} |
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$walker->($_) for $n->content; |
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|
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} elsif ($t eq "begin") { |
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local $Pod::POM::DEFAULT_VIEW = Pod::POM::View::Pod; |
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my $format = $n->format; |
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|
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if ($format =~ /texinfo\s+header/) { |
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$header = $n->content; |
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} elsif ($format =~ /texinfo\s+footer/) { |
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$footer = $n->content; |
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} else { |
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out $n->content; |
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} |
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|
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} elsif ($t eq "for") { |
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my $text = $n->text; |
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|
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if ($text =~ /^menu-begin/) { |
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out "\n\@menu\n"; |
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|
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push @ctx, {}; # dummy node |
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|
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} elsif ($text =~ /^menu-item (.*?)::\s+(.*)/) { |
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my ($name, $desc) = ($1, $2); |
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|
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push @{ $ctx[-2]{menu} }, [$name, $desc]; |
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$ctx[-2]{width} = length $name if $ctx[-2]{width} < length $name; |
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|
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my $ctx = { |
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name => $name, |
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up => $ctx[-2]{name}, |
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}; |
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push @nodes, $ctx; |
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$ctx[-1] = $ctx; |
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|
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} elsif ($text =~ /^menu-end/) { |
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pop @ctx; |
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|
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for (@{ $ctx[-1]{menu} }) { |
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out sprintf "* %-*s %s\n", $ctx[-1]{width} + 2, "$_->[0]::", $_->[1]; |
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} |
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|
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out "\@end menu\n"; |
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|
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} elsif ($text =~ /^include (\S+) (.*)/) { |
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my ($type, $path) = ($1, $2); |
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|
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open my $x, "<$path" or die "$path: $!"; |
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my $data = do { local $/; <$x> }; |
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|
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if ($type eq "pod") { |
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out parse_pod ($data); |
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} elsif ($type eq "text") { |
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out $data; |
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} elsif ($type eq "example") { |
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out example $data; |
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} |
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|
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} else { |
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die "UNKNOWN for command <$text>\n"; |
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} |
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|
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} else { |
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die "UNKNOWN NODE $t\n"; |
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} |
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}; |
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|
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$walker->($pod); |
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} |
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|
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@ctx = @nodes = { |
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up => "(dir)", |
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name => "Top", |
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}; |
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|
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parse_pod do { local $/; <> }; |
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|
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print $header; |
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|
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for (0 .. $#nodes) { |
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my $node = $nodes[$_]; |
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my $prev = $_ > 0 ? $nodes[$_-1] : undef; |
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my $next = $nodes[$_+1]; |
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my $chapter = $node->{name} eq "Top" ? "Introduction" : $node->{name}; |
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|
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print "\@node $node->{name},$next->{name},$prev->{name},$node->{up}\n\n", |
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"\@chapter $chapter\n", |
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"$node->{out}\n\n"; |
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} |
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|
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print $footer; |
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|
