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Comparing gvpe/doc/pod2texi (file contents):
Revision 1.1 by pcg, Fri Mar 28 19:46:47 2003 UTC vs.
Revision 1.8 by pcg, Wed Aug 27 22:14:03 2008 UTC

1#!/usr/bin/perl -p 1#!/usr/bin/perl
2 2
3# TODO: texinfo fails on @cindex in title elements etc. *sigh*
4
5use Pod::POM;
6
3sub escape_texi($) { 7sub escape_texi($) {
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
10while (<>) { 14sub 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
19 open $x, "<$pod" or die "$pod: $!";
20
21 use Pod::Tree;
22
23 my $pod = new Pod::Tree;
24 $pod->load_string(do { local $/; <$x> });
25
26 my $walker; $walker = sub {
27 my $n = $_[0];
28 if ($n->is_code) {
29 # nop
30 } elsif ($n->is_link) {
31 my $target = $n->get_target;
32 my $page = $target->get_page;
33 my $section = $target->get_section;
34
35 #print "<b>";
36 $walker->($_) for @{$n->get_children};
37 #print "</b>";
38 } elsif ($n->is_text) {
39 print escape_texi $n->get_text;
40 } elsif ($n->is_verbatim) {
41 print "\n\n\@verbatim\n";
42 my $text = $n->get_text;
43 $text =~ s/\n+$//;
44 print $text;
45 print "\n\@end verbatim\n\n";
46 } elsif ($n->is_sequence) {
47 if ($n->get_letter eq "C") {
48 print "\@t{";
49 $walker->($_) for @{$n->get_children};
50 print "}";
51 } elsif ($n->get_letter eq "B") {
52 print "\@strong{";
53 $walker->($_) for @{$n->get_children};
54 print "}";
55 } elsif ($n->get_letter eq "I" or $n->get_letter eq "F") {
56 print "\@emph{";
57 $walker->($_) for @{$n->get_children};
58 print "}";
59 } else {
60 # S would mean to use nbsp
61 $walker->($_) for @{$n->get_children};
62 }
63 } elsif ($n->is_command) {
64 if ($n->is_c_head1) {
65 print "\n\@subsection ";
66 $walker->($_) for @{$n->get_children};
67 print "\n";
68 } elsif ($n->is_c_head2) {
69 print "\n\n\@subsubsection ";
70 $walker->($_) for @{$n->get_children};
71 print "\n";
72 } else {
73 # nop?
74 }
75 } elsif ($n->is_ordinary) {
76 $walker->($_) for @{$n->get_children};
77 print "\@refill\n";
78 } elsif ($n->is_root) {
79 $walker->($_) for @{$n->get_children};
80 } elsif ($n->is_list) {
81 print "\n\n\@itemize\n";
82 $walker->($_) for @{$n->get_children};
83 print "\@end itemize\n\n";
84 } elsif ($n->is_item) {
85 print "\n\n\@item\n";
86 print "\@b{";
87 $walker->($_) for @{$n->get_children};
88 print "}\n\n";
89 $walker->($_) for @{$n->get_siblings};
90 } else {
91 die "UNKNOWN NODE $_[0]{type}<br/>";
92 $walker->($_) for @{$n->get_children};
93 }
94 };
95
96 $walker->($pod->get_root);
97 } else {
98 print;
99 }
100} 22}
101 23
24my @nodes; # nodelist
25my @ctx; # curstack
26
27sub out {
28 $ctx[-1]{out} .= join "", @_;
29}
30
31sub TEX::view_seq_code { "\@t{$_[1]}" }
32sub TEX::view_seq_bold { "\@strong{$_[1]}" }
33sub TEX::view_seq_italic { "\@emph{$_[1]}" }
34
35sub TEX::view_seq_space { escape_texi $_[1] }
36sub TEX::view_seq_text { escape_texi $_[1] }
37
38sub TEX::view_seq_link { $_[1] }
39sub 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 { $_[1] };
50
51my %ignore = (
52 "SEE ALSO" => 1,
53 "AUTHOR" => 1,
54);
55
56sub parse_pod {
57 my ($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" . $n->title . "\n\n";
98
99 if ($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
177parse_pod do { local $/; <> };
178
179print $header;
180
181for (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
192print $footer;
193

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