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#!/usr/bin/perl |
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|
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use Pod::Tree; |
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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 parse_pod { |
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my ($data) = @_; |
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local $out; |
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|
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my $pod = new Pod::Tree; |
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$pod->load_string($data); |
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|
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my $walker; $walker = sub { |
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my $n = $_[0]; |
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if ($n->is_code) { |
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# nop |
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} elsif ($n->is_link) { |
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my $target = $n->get_target; |
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my $page = $target->get_page; |
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my $section = $target->get_section; |
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|
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$walker->($_) for @{$n->get_children}; |
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} elsif ($n->is_text) { |
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out escape_texi $n->get_text; |
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} elsif ($n->is_verbatim) { |
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out example $n->get_text; |
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} elsif ($n->is_sequence) { |
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if ($n->get_letter eq "C") { |
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out "\@t{"; |
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$walker->($_) for @{$n->get_children}; |
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out "}"; |
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} elsif ($n->get_letter eq "B") { |
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out "\@strong{"; |
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$walker->($_) for @{$n->get_children}; |
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out "}"; |
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} elsif ($n->get_letter eq "I" or $n->get_letter eq "F") { |
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out "\@emph{"; |
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$walker->($_) for @{$n->get_children}; |
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out "}"; |
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} else { |
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# S would mean to use nbsp |
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$walker->($_) for @{$n->get_children}; |
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} |
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} elsif ($n->is_command) { |
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if ($n->is_c_head1) { |
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out "\n\@section "; |
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$walker->($_) for @{$n->get_children}; |
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out "\n"; |
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} elsif ($n->is_c_head2) { |
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out "\n\n\@subsection "; |
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$walker->($_) for @{$n->get_children}; |
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out "\n"; |
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} else { |
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# nop? |
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} |
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} elsif ($n->is_ordinary) { |
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$walker->($_) for @{$n->get_children}; |
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out "\@refill\n"; |
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} elsif ($n->is_root) { |
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$walker->($_) for @{$n->get_children}; |
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} elsif ($n->is_list) { |
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out "\n\n\@itemize\n"; |
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$walker->($_) for @{$n->get_children}; |
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out "\@end itemize\n\n"; |
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} elsif ($n->is_item) { |
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out "\n\n\@item\n"; |
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out "\@b{"; |
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$walker->($_) for @{$n->get_children}; |
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out "}\n\n"; |
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$walker->($_) for @{$n->get_siblings}; |
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} elsif ($n->is_for) { |
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my $text = $n->get_text; |
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|
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if ($n->get_command eq "begin") { |
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if ($n->{brackets}[0] =~ / header/) { |
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$header = $text; |
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} elsif ($n->{brackets}[0] =~ / footer/) { |
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$footer = $text; |
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} else { |
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out $text; |
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} |
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|
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} elsif ($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 $_[0]{type}\n"; |
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$walker->($_) for @{$n->get_children}; |
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} |
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}; |
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|
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$walker->($pod->get_root); |
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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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|
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print "\@node $node->{name},$next->{name},$prev->{name},$node->{up}\n\n", |
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"\@chapter $node->{name}\n", |
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"$node->{out}\n\n"; |
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} |
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|
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print $footer; |
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|
