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/cvs/gvpe/doc/pod2texi
Revision: 1.7
Committed: Sat Apr 16 19:39:23 2005 UTC (19 years, 7 months ago) by pcg
Branch: MAIN
CVS Tags: rel-1_9, rel-2_01, rel-2_0
Changes since 1.6: +1 -1 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_bold { "\@strong{$_[1]}" }
33 sub TEX::view_seq_italic { "\@emph{$_[1]}" }
34
35 sub TEX::view_seq_space { escape_texi $_[1] }
36 sub TEX::view_seq_text { escape_texi $_[1] }
37
38 sub TEX::view_seq_link { $_[1] }
39 sub TEX::view_seq_index {
40 "\n\@cindex $_[1]\n$_[1]"
41 }
42
43 *TXT::view_seq_code =
44 *TXT::view_seq_bold =
45 *TXT::view_seq_italic =
46 *TXT::view_seq_space =
47 *TXT::view_seq_text =
48 *TXT::view_seq_link =
49 *TXT::view_seq_index = sub { $_[1] };
50
51 my %ignore = (
52 "SEE ALSO" => 1,
53 "AUTHOR" => 1,
54 );
55
56 sub parse_pod {
57 my ($data) = @_;
58 local $out;
59
60 local $Pod::POM::DEFAULT_VIEW = TEX::;
61
62 my $parser = new Pod::POM;
63 my $pod = $parser->parse_text ($data)
64 or die;
65
66 my $walker; $walker = sub {
67 my $n = $_[0];
68 my $t = $n->type;
69
70 if ($t eq "text") {
71 out $n->text . "\n\@refill\n";
72
73 } elsif ($t eq "pod") {
74 $walker->($_) for $n->content;
75
76 } elsif ($t eq "verbatim") {
77 out example $n->text;
78
79 } elsif ($t eq "head1") {
80
81 return if $ignore{$n->title};
82
83 out "\n\@section " . $n->title . "\n";
84 $walker->($_) for $n->content;
85 out "\n";
86
87 } elsif ($t eq "head2") {
88 out "\n\n\@subsection " . $n->title . "\n";
89 $walker->($_) for $n->content;
90
91 } elsif ($t eq "over") {
92 out "\n\n\@itemize\n";
93 $walker->($_) for $n->content;
94 out "\@end itemize\n\n";
95
96 } elsif ($t eq "item") {
97 out "\n\n\@item\n\@b{" . $n->title . "}\n\n";
98
99 if ($n->title->present (TXT::) =~ /^\s*([a-zA-Z0-9\-\_]+)\s*=/) {
100 out "\@cindex $1\n";
101 }
102 $walker->($_) for $n->content;
103
104 } elsif ($t eq "begin") {
105 local $Pod::POM::DEFAULT_VIEW = Pod::POM::View::Pod;
106 my $format = $n->format;
107
108 if ($format =~ /texinfo\s+header/) {
109 $header = $n->content;
110 } elsif ($format =~ /texinfo\s+footer/) {
111 $footer = $n->content;
112 } else {
113 out $n->content;
114 }
115
116 } elsif ($t eq "for") {
117 my $text = $n->text;
118
119 if ($text =~ /^menu-begin/) {
120 out "\n\@menu\n";
121
122 push @ctx, {}; # dummy node
123
124 } elsif ($text =~ /^menu-item (.*?)::\s+(.*)/) {
125 my ($name, $desc) = ($1, $2);
126
127 push @{ $ctx[-2]{menu} }, [$name, $desc];
128 $ctx[-2]{width} = length $name if $ctx[-2]{width} < length $name;
129
130 my $ctx = {
131 name => $name,
132 up => $ctx[-2]{name},
133 };
134 push @nodes, $ctx;
135 $ctx[-1] = $ctx;
136
137 } elsif ($text =~ /^menu-end/) {
138 pop @ctx;
139
140 for (@{ $ctx[-1]{menu} }) {
141 out sprintf "* %-*s %s\n", $ctx[-1]{width} + 2, "$_->[0]::", $_->[1];
142 }
143
144 out "\@end menu\n";
145
146 } elsif ($text =~ /^include (\S+) (.*)/) {
147 my ($type, $path) = ($1, $2);
148
149 open my $x, "<$path" or die "$path: $!";
150 my $data = do { local $/; <$x> };
151
152 if ($type eq "pod") {
153 out parse_pod ($data);
154 } elsif ($type eq "text") {
155 out $data;
156 } elsif ($type eq "example") {
157 out example $data;
158 }
159
160 } else {
161 die "UNKNOWN for command <$text>\n";
162 }
163
164 } else {
165 die "UNKNOWN NODE $t\n";
166 }
167 };
168
169 $walker->($pod);
170 }
171
172 @ctx = @nodes = {
173 up => "(dir)",
174 name => "Top",
175 };
176
177 parse_pod do { local $/; <> };
178
179 print $header;
180
181 for (0 .. $#nodes) {
182 my $node = $nodes[$_];
183 my $prev = $_ > 0 ? $nodes[$_-1] : undef;
184 my $next = $nodes[$_+1];
185 my $chapter = $node->{name} eq "Top" ? "Introduction" : $node->{name};
186
187 print "\@node $node->{name},$next->{name},$prev->{name},$node->{up}\n\n",
188 "\@chapter $chapter\n",
189 "$node->{out}\n\n";
190 }
191
192 print $footer;
193