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/cvs/gvpe/doc/pod2texi
Revision: 1.9
Committed: Tue Feb 15 13:31:22 2011 UTC (13 years, 8 months ago) by root
Branch: MAIN
CVS Tags: rel-3_0, rel-2_25, HEAD
Changes since 1.8: +1 -0 lines
Log Message:
*** empty log message ***

File Contents

# Content
1 #!/usr/bin/perl
2
3 # TODO: texinfo fails on @cindex in title elements etc. *sigh*
4
5 use Pod::POM;
6
7 sub escape_texi($) {
8 local $_ = shift;
9 s/([\@\{\}])/\@$1/g;
10 s/\n+/ /g;
11 $_;
12 }
13
14 sub example {
15 my $text = $_[0];
16 $text =~ s/\n+$//;
17 $text =~ s/([\@\{\}])/\@$1/g;
18
19 "\n\n\@example\n"
20 . $text
21 . "\n\@end example\n\n";
22 }
23
24 my @nodes; # nodelist
25 my @ctx; # curstack
26
27 sub out {
28 $ctx[-1]{out} .= join "", @_;
29 }
30
31 sub TEX::view_seq_code { "\@t{$_[1]}" }
32 sub TEX::view_seq_file { "\@file{$_[1]}" }
33 sub TEX::view_seq_bold { "\@strong{$_[1]}" }
34 sub TEX::view_seq_italic { "\@emph{$_[1]}" }
35
36 sub TEX::view_seq_space { escape_texi $_[1] }
37 sub TEX::view_seq_text { escape_texi $_[1] }
38
39 sub TEX::view_seq_link { $_[1] }
40 sub TEX::view_seq_index {
41 "\n\@cindex $_[1]\n$_[1]"
42 }
43
44 *TXT::view_seq_code =
45 *TXT::view_seq_bold =
46 *TXT::view_seq_italic =
47 *TXT::view_seq_space =
48 *TXT::view_seq_text =
49 *TXT::view_seq_link =
50 *TXT::view_seq_index = sub { $_[1] };
51
52 my %ignore = (
53 "SEE ALSO" => 1,
54 "AUTHOR" => 1,
55 );
56
57 sub parse_pod {
58 my ($data) = @_;
59 local $out;
60
61 local $Pod::POM::DEFAULT_VIEW = TEX::;
62
63 my $parser = new Pod::POM;
64 my $pod = $parser->parse_text ($data)
65 or die;
66
67 my $walker; $walker = sub {
68 my $n = $_[0];
69 my $t = $n->type;
70
71 if ($t eq "text") {
72 out $n->text . "\n\@refill\n";
73
74 } elsif ($t eq "pod") {
75 $walker->($_) for $n->content;
76
77 } elsif ($t eq "verbatim") {
78 out example $n->text;
79
80 } elsif ($t eq "head1") {
81
82 return if $ignore{$n->title};
83
84 out "\n\@section " . $n->title . "\n";
85 $walker->($_) for $n->content;
86 out "\n";
87
88 } elsif ($t eq "head2") {
89 out "\n\n\@subsection " . $n->title . "\n";
90 $walker->($_) for $n->content;
91
92 } elsif ($t eq "over") {
93 out "\n\n\@itemize\n";
94 $walker->($_) for $n->content;
95 out "\@end itemize\n\n";
96
97 } elsif ($t eq "item") {
98 out "\n\n\@item\n" . $n->title . "\n\n";
99
100 if ($n->title->present (TXT::) =~ /^\s*([a-zA-Z0-9\-\_]+)\s*=/) {
101 out "\@cindex $1\n";
102 }
103 $walker->($_) for $n->content;
104
105 } elsif ($t eq "begin") {
106 local $Pod::POM::DEFAULT_VIEW = Pod::POM::View::Pod;
107 my $format = $n->format;
108
109 if ($format =~ /texinfo\s+header/) {
110 $header = $n->content;
111 } elsif ($format =~ /texinfo\s+footer/) {
112 $footer = $n->content;
113 } else {
114 out $n->content;
115 }
116
117 } elsif ($t eq "for") {
118 my $text = $n->text;
119
120 if ($text =~ /^menu-begin/) {
121 out "\n\@menu\n";
122
123 push @ctx, {}; # dummy node
124
125 } elsif ($text =~ /^menu-item (.*?)::\s+(.*)/) {
126 my ($name, $desc) = ($1, $2);
127
128 push @{ $ctx[-2]{menu} }, [$name, $desc];
129 $ctx[-2]{width} = length $name if $ctx[-2]{width} < length $name;
130
131 my $ctx = {
132 name => $name,
133 up => $ctx[-2]{name},
134 };
135 push @nodes, $ctx;
136 $ctx[-1] = $ctx;
137
138 } elsif ($text =~ /^menu-end/) {
139 pop @ctx;
140
141 for (@{ $ctx[-1]{menu} }) {
142 out sprintf "* %-*s %s\n", $ctx[-1]{width} + 2, "$_->[0]::", $_->[1];
143 }
144
145 out "\@end menu\n";
146
147 } elsif ($text =~ /^include (\S+) (.*)/) {
148 my ($type, $path) = ($1, $2);
149
150 open my $x, "<$path" or die "$path: $!";
151 my $data = do { local $/; <$x> };
152
153 if ($type eq "pod") {
154 out parse_pod ($data);
155 } elsif ($type eq "text") {
156 out $data;
157 } elsif ($type eq "example") {
158 out example $data;
159 }
160
161 } else {
162 die "UNKNOWN for command <$text>\n";
163 }
164
165 } else {
166 die "UNKNOWN NODE $t\n";
167 }
168 };
169
170 $walker->($pod);
171 }
172
173 @ctx = @nodes = {
174 up => "(dir)",
175 name => "Top",
176 };
177
178 parse_pod do { local $/; <> };
179
180 print $header;
181
182 for (0 .. $#nodes) {
183 my $node = $nodes[$_];
184 my $prev = $_ > 0 ? $nodes[$_-1] : undef;
185 my $next = $nodes[$_+1];
186 my $chapter = $node->{name} eq "Top" ? "Introduction" : $node->{name};
187
188 print "\@node $node->{name},$next->{name},$prev->{name},$node->{up}\n\n",
189 "\@chapter $chapter\n",
190 "$node->{out}\n\n";
191 }
192
193 print $footer;
194