| 1 | #!/usr/bin/perl -p |
1 | #!/usr/bin/perl |
| 2 | |
2 | |
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3 | # TODO: texinfo fails on @cindex in title elements etc. *sigh* |
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4 | |
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5 | use Pod::POM; |
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6 | |
| 3 | sub escape_texi($) { |
7 | sub escape_texi($) { |
| 4 | local $_ = shift; |
8 | local $_ = shift; |
| 5 | s/([\@\{\}])/\@$1/g; |
9 | s/([\@\{\}])/\@$1/g; |
| 6 | s/\n+/ /g; |
10 | s/\n+/ /g; |
| 7 | $_; |
11 | $_; |
| 8 | } |
12 | } |
| 9 | |
13 | |
| 10 | while (<>) { |
14 | sub example { |
| 11 | if (/^\@c INCLUDE (\S+)/) { |
15 | my $text = $_[0]; |
| 12 | my $name = $1; |
16 | $text =~ s/\n+$//; |
| 13 | my $pod = "$name.pod"; |
17 | $text =~ s/([\@\{\}])/\@$1/g; |
| 14 | |
18 | |
| 15 | $name =~ s/\.(\d)$/($1)/; |
19 | "\n\n\@example\n" |
| 16 | |
20 | . $text |
| 17 | print "\@chapter $name\n\n"; |
21 | . "\n\@end example\n\n"; |
| 18 | |
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| 19 | open $x, "<$pod" or die "$pod: $!"; |
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| 20 | |
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| 21 | use Pod::Tree; |
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| 22 | |
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| 23 | my $pod = new Pod::Tree; |
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| 24 | $pod->load_string(do { local $/; <$x> }); |
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| 25 | |
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| 26 | my $walker; $walker = sub { |
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| 27 | my $n = $_[0]; |
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| 28 | if ($n->is_code) { |
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| 29 | # nop |
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| 30 | } elsif ($n->is_link) { |
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| 31 | my $target = $n->get_target; |
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| 32 | my $page = $target->get_page; |
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| 33 | my $section = $target->get_section; |
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| 34 | |
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| 35 | #print "<b>"; |
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| 36 | $walker->($_) for @{$n->get_children}; |
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| 37 | #print "</b>"; |
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| 38 | } elsif ($n->is_text) { |
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| 39 | print escape_texi $n->get_text; |
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| 40 | } elsif ($n->is_verbatim) { |
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| 41 | print "\n\n\@example\n"; |
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| 42 | my $text = $n->get_text; |
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| 43 | $text =~ s/\n+$//; |
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| 44 | $text =~ s/([\@\{\}])/@$1/g; |
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| 45 | print $text; |
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| 46 | print "\n\@end example\n\n"; |
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| 47 | } elsif ($n->is_sequence) { |
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| 48 | if ($n->get_letter eq "C") { |
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| 49 | print "\@t{"; |
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| 50 | $walker->($_) for @{$n->get_children}; |
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| 51 | print "}"; |
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| 52 | } elsif ($n->get_letter eq "B") { |
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| 53 | print "\@strong{"; |
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| 54 | $walker->($_) for @{$n->get_children}; |
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| 55 | print "}"; |
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| 56 | } elsif ($n->get_letter eq "I" or $n->get_letter eq "F") { |
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| 57 | print "\@emph{"; |
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| 58 | $walker->($_) for @{$n->get_children}; |
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| 59 | print "}"; |
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| 60 | } else { |
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| 61 | # S would mean to use nbsp |
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| 62 | $walker->($_) for @{$n->get_children}; |
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| 63 | } |
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| 64 | } elsif ($n->is_command) { |
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| 65 | if ($n->is_c_head1) { |
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| 66 | print "\n\@subsection "; |
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| 67 | $walker->($_) for @{$n->get_children}; |
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| 68 | print "\n"; |
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| 69 | } elsif ($n->is_c_head2) { |
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| 70 | print "\n\n\@subsubsection "; |
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| 71 | $walker->($_) for @{$n->get_children}; |
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| 72 | print "\n"; |
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| 73 | } else { |
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| 74 | # nop? |
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| 75 | } |
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| 76 | } elsif ($n->is_ordinary) { |
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| 77 | $walker->($_) for @{$n->get_children}; |
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| 78 | print "\@refill\n"; |
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| 79 | } elsif ($n->is_root) { |
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| 80 | $walker->($_) for @{$n->get_children}; |
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| 81 | } elsif ($n->is_list) { |
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| 82 | print "\n\n\@itemize\n"; |
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| 83 | $walker->($_) for @{$n->get_children}; |
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| 84 | print "\@end itemize\n\n"; |
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| 85 | } elsif ($n->is_item) { |
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| 86 | print "\n\n\@item\n"; |
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| 87 | print "\@b{"; |
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| 88 | $walker->($_) for @{$n->get_children}; |
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| 89 | print "}\n\n"; |
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| 90 | $walker->($_) for @{$n->get_siblings}; |
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| 91 | } else { |
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| 92 | die "UNKNOWN NODE $_[0]{type}<br/>"; |
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| 93 | $walker->($_) for @{$n->get_children}; |
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| 94 | } |
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| 95 | }; |
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| 96 | |
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| 97 | $walker->($pod->get_root); |
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| 98 | } else { |
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| 99 | print; |
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| 100 | } |
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| 101 | } |
22 | } |
| 102 | |
23 | |
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24 | my @nodes; # nodelist |
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25 | my @ctx; # curstack |
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26 | |
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27 | sub out { |
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28 | $ctx[-1]{out} .= join "", @_; |
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29 | } |
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30 | |
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31 | sub TEX::view_seq_code { "\@t{$_[1]}" } |
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32 | sub TEX::view_seq_bold { "\@strong{$_[1]}" } |
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33 | sub TEX::view_seq_italic { "\@emph{$_[1]}" } |
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34 | |
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35 | sub TEX::view_seq_space { escape_texi $_[1] } |
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36 | sub TEX::view_seq_text { escape_texi $_[1] } |
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37 | |
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38 | sub TEX::view_seq_link { $_[1] } |
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39 | sub TEX::view_seq_index { |
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40 | "\n\@cindex $_[1]\n$_[1]" |
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41 | } |
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42 | |
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43 | *TXT::view_seq_code = |
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44 | *TXT::view_seq_bold = |
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45 | *TXT::view_seq_italic = |
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46 | *TXT::view_seq_space = |
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47 | *TXT::view_seq_text = |
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48 | *TXT::view_seq_link = |
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49 | *TXT::view_seq_index = sub { $_[1] }; |
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50 | |
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51 | my %ignore = ( |
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52 | "SEE ALSO" => 1, |
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53 | "AUTHOR" => 1, |
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54 | ); |
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55 | |
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56 | sub parse_pod { |
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57 | my ($data) = @_; |
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58 | local $out; |
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59 | |
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60 | local $Pod::POM::DEFAULT_VIEW = TEX::; |
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61 | |
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62 | my $parser = new Pod::POM; |
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63 | my $pod = $parser->parse_text ($data) |
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64 | or die; |
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65 | |
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66 | my $walker; $walker = sub { |
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67 | my $n = $_[0]; |
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68 | my $t = $n->type; |
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69 | |
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70 | if ($t eq "text") { |
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71 | out $n->text . "\n\@refill\n"; |
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72 | |
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73 | } elsif ($t eq "pod") { |
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74 | $walker->($_) for $n->content; |
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75 | |
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76 | } elsif ($t eq "verbatim") { |
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77 | out example $n->text; |
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78 | |
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79 | } elsif ($t eq "head1") { |
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80 | |
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81 | return if $ignore{$n->title}; |
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82 | |
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83 | out "\n\@section " . $n->title . "\n"; |
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84 | $walker->($_) for $n->content; |
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85 | out "\n"; |
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86 | |
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87 | } elsif ($t eq "head2") { |
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88 | out "\n\n\@subsection " . $n->title . "\n"; |
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89 | $walker->($_) for $n->content; |
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90 | |
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91 | } elsif ($t eq "over") { |
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92 | out "\n\n\@itemize\n"; |
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93 | $walker->($_) for $n->content; |
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94 | out "\@end itemize\n\n"; |
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95 | |
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96 | } elsif ($t eq "item") { |
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97 | out "\n\n\@item\n\@b{" . $n->title . "}\n\n"; |
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98 | |
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99 | if ($n->title->present (TXT::) =~ /^\s*([a-zA-Z0-9\-\_]+)\s*=/) { |
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100 | out "\@cindex $1\n"; |
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101 | } |
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102 | $walker->($_) for $n->content; |
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103 | |
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104 | } elsif ($t eq "begin") { |
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105 | local $Pod::POM::DEFAULT_VIEW = Pod::POM::View::Pod; |
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106 | my $format = $n->format; |
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107 | |
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108 | if ($format =~ /texinfo\s+header/) { |
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109 | $header = $n->content; |
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110 | } elsif ($format =~ /texinfo\s+footer/) { |
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111 | $footer = $n->content; |
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112 | } else { |
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113 | out $n->content; |
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114 | } |
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115 | |
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116 | } elsif ($t eq "for") { |
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117 | my $text = $n->text; |
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118 | |
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119 | if ($text =~ /^menu-begin/) { |
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120 | out "\n\@menu\n"; |
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121 | |
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122 | push @ctx, {}; # dummy node |
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123 | |
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124 | } elsif ($text =~ /^menu-item (.*?)::\s+(.*)/) { |
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125 | my ($name, $desc) = ($1, $2); |
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126 | |
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127 | push @{ $ctx[-2]{menu} }, [$name, $desc]; |
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128 | $ctx[-2]{width} = length $name if $ctx[-2]{width} < length $name; |
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129 | |
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130 | my $ctx = { |
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131 | name => $name, |
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132 | up => $ctx[-2]{name}, |
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133 | }; |
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134 | push @nodes, $ctx; |
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135 | $ctx[-1] = $ctx; |
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136 | |
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137 | } elsif ($text =~ /^menu-end/) { |
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138 | pop @ctx; |
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139 | |
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140 | for (@{ $ctx[-1]{menu} }) { |
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141 | out sprintf "* %-*s %s\n", $ctx[-1]{width} + 2, "$_->[0]::", $_->[1]; |
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142 | } |
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143 | |
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144 | out "\@end menu\n"; |
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145 | |
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146 | } elsif ($text =~ /^include (\S+) (.*)/) { |
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147 | my ($type, $path) = ($1, $2); |
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148 | |
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149 | open my $x, "<$path" or die "$path: $!"; |
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150 | my $data = do { local $/; <$x> }; |
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151 | |
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152 | if ($type eq "pod") { |
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153 | out parse_pod ($data); |
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154 | } elsif ($type eq "text") { |
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155 | out $data; |
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156 | } elsif ($type eq "example") { |
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157 | out example $data; |
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158 | } |
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159 | |
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160 | } else { |
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161 | die "UNKNOWN for command <$text>\n"; |
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162 | } |
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163 | |
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164 | } else { |
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165 | die "UNKNOWN NODE $t\n"; |
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166 | } |
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167 | }; |
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168 | |
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169 | $walker->($pod); |
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170 | } |
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171 | |
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172 | @ctx = @nodes = { |
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173 | up => "(dir)", |
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174 | name => "Top", |
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175 | }; |
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176 | |
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177 | parse_pod do { local $/; <> }; |
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178 | |
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179 | print $header; |
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180 | |
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181 | for (0 .. $#nodes) { |
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182 | my $node = $nodes[$_]; |
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183 | my $prev = $_ > 0 ? $nodes[$_-1] : undef; |
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184 | my $next = $nodes[$_+1]; |
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185 | my $chapter = $node->{name} eq "Top" ? "Introduction" : $node->{name}; |
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186 | |
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187 | print "\@node $node->{name},$next->{name},$prev->{name},$node->{up}\n\n", |
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188 | "\@chapter $chapter\n", |
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189 | "$node->{out}\n\n"; |
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190 | } |
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191 | |
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192 | print $footer; |
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193 | |
