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|
#!/usr/bin/perl
#
# pod2html - convert pod format to html
#
# usage: pod2html [podfiles]
# will read the cwd and parse all files with .pod extension
# if no arguments are given on the command line.
#
*RS = */;
*ERRNO = *!;
use Carp;
$gensym = 0;
while ($ARGV[0] =~ /^-d(.*)/) {
shift;
$Debug{ lc($1 || shift) }++;
}
# look in these pods for things not found within the current pod
@inclusions = qw[
perlfunc perlvar perlrun perlop
];
# ck for podnames on command line
while ($ARGV[0]) {
push(@Pods,shift);
}
$A={};
# location of pods
$dir=".";
# The beginning of the url for the anchors to the other sections.
# Edit $type to suit. It's configured for relative url's now.
$type='<A HREF="';
$debug = 0;
unless(@Pods){
opendir(DIR,$dir) or die "Can't opendir $dir: $ERRNO";
@Pods = grep(/\.pod$/,readdir(DIR));
closedir(DIR) or die "Can't closedir $dir: $ERRNO";
}
@Pods or die "expected pods";
# loop twice through the pods, first to learn the links, then to produce html
for $count (0,1){
foreach $podfh ( @Pods ) {
($pod = $podfh) =~ s/\.pod$//;
Debug("files", "opening 2 $podfh" );
$RS = "\n=";
open($podfh,"<".$podfh) || die "can't open $podfh: $ERRNO";
@all=<$podfh>;
close($podfh);
$RS = "\n";
$all[0]=~s/^=//;
for(@all){s/=$//;}
$Podnames{$pod} = 1;
$in_list=0;
$html=$pod.".html";
if($count){
#open(HTML,">&STDOUT") || die "can't create $html: $ERRNO";
open(HTML,">$html") || die "can't create $html: $ERRNO";
print HTML <<'HTML__EOQ', <<"HTML__EOQQ";
<!-- $RCSfile$$Date$ -->
<!-- $Log$ -->
<HTML>
HTML__EOQ
<TITLE> \U$pod\E </TITLE>
HTML__EOQQ
}
for($i=0;$i<=$#all;$i++){
$all[$i] =~ /^(\w+)\s*(.*)\n?([^\0]*)$/ ;
($cmd, $title, $rest) = ($1,$2,$3);
if ($cmd eq "item") {
if($count ){
($depth) or &do_list("over",$all[$i],\$in_list,\$depth);
&do_item($title,$rest,$in_list);
}
else{
# scan item
&scan_thing("item",$title,$pod);
}
}
elsif ($cmd =~ /^head([12])/){
$num=$1;
if($count){
&do_hdr($num,$title,$rest,$depth);
}
else{
# header scan
&scan_thing($cmd,$title,$pod); # skip head1
}
}
elsif ($cmd =~ /^over/) {
$depth and &do_list("over",$all[$i+1],\$in_list,\$depth);
}
elsif ($cmd =~ /^back/) {
if($count){
($depth) or next; # just skip it
&do_list("back",$all[$i+1],\$in_list,\$depth);
&do_rest("$title.$rest");
}
}
elsif ($cmd =~ /^cut/) {
&do_rest($rest);
}
else {
warn "unrecognized header: $cmd";
}
}
if($count){
while($depth){
&do_list("back",$all[$i+1],\$in_list,\$depth);
}
print HTML "\n</HTML>\n";
}
}
}
sub do_list{
my($which,$next_one,$list_type,$depth)=@_;
my($key);
if($which eq "over"){
($next_one =~ /^item\s+(.*)/ ) or warn "Bad list, $1\n";
$key=$1;
if($key =~ /^1\.?/){
$$list_type = "OL";
}
elsif($key =~ /\*\s*$/){
$$list_type="UL";
}
elsif($key =~ /\*?\s*\w/){
$$list_type="DL";
}
else{
warn "unknown list type for item $key";
}
print HTML qq{\n};
print HTML qq{<$$list_type>};
$$depth++;
}
elsif($which eq "back"){
print HTML qq{\n</$$list_type>\n};
$$depth--;
}
}
sub do_hdr{
my($num,$title,$rest,$depth)=@_;
($num == 1) and print HTML qq{<p><hr>\n};
&process_thing(\$title,"NAME");
print HTML qq{\n<H$num> };
print HTML $title;
print HTML qq{</H$num>\n};
&do_rest($rest);
}
sub do_item{
my($title,$rest,$list_type)=@_;
&process_thing(\$title,"NAME");
if($list_type eq "DL"){
print HTML qq{\n<DT><STRONG>\n};
print HTML $title;
print HTML qq{\n</STRONG></DT>\n};
print HTML qq{<DD>\n};
}
else{
print HTML qq{\n<LI>};
($list_type ne "OL") && (print HTML $title,"\n");
}
&do_rest($rest);
print HTML ($list_type eq "DL" )? qq{</DD>} : qq{</LI>};
}
sub do_rest{
my($rest)=@_;
my(@lines,$p,$q,$line,@paras,$inpre);
@paras=split(/\n\n+/,$rest);
for($p=0;$p<=$#paras;$p++){
@lines=split(/\n/,$paras[$p]);
if($lines[0] =~ /^\s+\w*\t.*/){ # listing or unordered list
print HTML qq{<UL>};
foreach $line (@lines){
($line =~ /^\s+(\w*)\t(.*)/) && (($key,$rem) = ($1,$2));
print HTML defined($Podnames{$key}) ?
"<LI>$type$key.html\">$key<\/A>\t$rem</LI>\n" :
"<LI>$line</LI>\n";
}
print HTML qq{</UL>\n};
}
elsif($lines[0] =~ /^\s/){ # preformatted code
if($paras[$p] =~/>>|<</){
print HTML qq{\n<PRE>\n};
$inpre=1;
}
else{
print HTML qq{\n<XMP>\n};
$inpre=0;
}
inner:
while(defined($paras[$p])){
@lines=split(/\n/,$paras[$p]);
foreach $q (@lines){
if($paras[$p]=~/>>|<</){
if($inpre){
&process_thing(\$q,"HTML");
}
else {
print HTML qq{\n</XMP>\n};
print HTML qq{<PRE>\n};
$inpre=1;
&process_thing(\$q,"HTML");
}
}
while($q =~ s/\t+/' 'x (length($&) * 8 - length($`) % 8)/e){
1;
}
print HTML $q,"\n";
}
last if $paras[$p+1] !~ /^\s/;
$p++;
}
print HTML ($inpre==1) ? (qq{\n</PRE>\n}) : (qq{\n</XMP>\n});
}
else{ # other text
@lines=split(/\n/,$paras[$p]);
foreach $line (@lines){
&process_thing(\$line,"HTML");
print HTML qq{$line\n};
}
}
print HTML qq{<p>};
}
}
sub process_thing{
my($thing,$htype)=@_;
&pre_escapes($thing);
&find_refs($thing,$htype);
&post_escapes($thing);
}
sub scan_thing{
my($cmd,$title,$pod)=@_;
$_=$title;
s/\n$//;
s/E<(.*?)>/&$1;/g;
# remove any formatting information for the headers
s/[SFCBI]<(.*?)>/$1/g;
# the "don't format me" thing
s/Z<>//g;
if ($cmd eq "item") {
if (/^\*/) { return } # skip bullets
if (/^\d+\./) { return } # skip numbers
s/(-[a-z]).*/$1/i;
trim($_);
return if defined $A->{$pod}->{"Items"}->{$_};
$A->{$pod}->{"Items"}->{$_} = gensym($pod, $_);
$A->{$pod}->{"Items"}->{(split(' ',$_))[0]}=$A->{$pod}->{"Items"}->{$_};
Debug("items", "item $_");
if (!/^-\w$/ && /([%\$\@\w]+)/ && $1 ne $_
&& !defined($A->{$pod}->{"Items"}->{$_}) && ($_ ne $1))
{
$A->{$pod}->{"Items"}->{$1} = $A->{$pod}->{"Items"}->{$_};
Debug("items", "item $1 REF TO $_");
}
if ( m{^(tr|y|s|m|q[qwx])/.*[^/]} ) {
my $pf = $1 . '//';
$pf .= "/" if $1 eq "tr" || $1 eq "y" || $1 eq "s";
if ($pf ne $_) {
$A->{$pod}->{"Items"}->{$pf} = $A->{$pod}->{"Items"}->{$_};
Debug("items", "item $pf REF TO $_");
}
}
}
elsif ($cmd =~ /^head[12]/){
return if defined($Headers{$_});
$A->{$pod}->{"Headers"}->{$_} = gensym($pod, $_);
Debug("headers", "header $_");
}
else {
warn "unrecognized header: $cmd";
}
}
sub picrefs {
my($char, $bigkey, $lilkey,$htype) = @_;
my($key,$ref,$podname);
for $podname ($pod,@inclusions){
for $ref ( "Items", "Headers" ) {
if (defined $A->{$podname}->{$ref}->{$bigkey}) {
$value = $A->{$podname}->{$ref}->{$key=$bigkey};
Debug("subs", "bigkey is $bigkey, value is $value\n");
}
elsif (defined $A->{$podname}->{$ref}->{$lilkey}) {
$value = $A->{$podname}->{$ref}->{$key=$lilkey};
return "" if $lilkey eq '';
Debug("subs", "lilkey is $lilkey, value is $value\n");
}
}
if (length($key)) {
($pod2,$num) = split(/_/,$value,2);
if($htype eq "NAME"){
return "\n<A NAME=\"".$value."\">\n$bigkey</A>\n"
}
else{
return "\n$type$pod2.html\#".$value."\">$bigkey<\/A>\n";
}
}
}
if ($char =~ /[IF]/) {
return "<EM> $bigkey </EM>";
} else {
return "<STRONG> $bigkey </STRONG>";
}
}
sub find_refs {
my($thing,$htype)=@_;
my($orig) = $$thing;
# LREF: a manpage(3f) we don't know about
$$thing=~s:L<([a-zA-Z][^\s\/]+)(\([^\)]+\))>:the I<$1>$2 manpage:g;
$$thing=~s/L<([^>]*)>/lrefs($1,$htype)/ge;
$$thing=~s/([CIBF])<(\W*?(-?\w*).*?)>/picrefs($1, $2, $3, $htype)/ge;
$$thing=~s/((\w+)\(\))/picrefs("I", $1, $2,$htype)/ge;
$$thing=~s/([\$\@%]([\w:]+|\W\b))/varrefs($1,$htype)/ge;
(($$thing eq $orig) && ($htype eq "NAME")) &&
($$thing=picrefs("I", $$thing, "", $htype));
}
sub lrefs {
my($page, $item) = split(m#/#, $_[0], 2);
my($htype)=$_[1];
my($podname);
my($section) = $page =~ /\((.*)\)/;
my $selfref;
if ($page =~ /^[A-Z]/ && $item) {
$selfref++;
$item = "$page/$item";
$page = $pod;
} elsif (!$item && $page =~ /[^a-z\-]/ && $page !~ /^\$.$/) {
$selfref++;
$item = $page;
$page = $pod;
}
$item =~ s/\(\)$//;
if (!$item) {
if (!defined $section && defined $Podnames{$page}) {
return "\n$type$page.html\">\nthe <EM> $page </EM> manpage<\/A>\n";
} else {
warn "Bizarre entry $page/$item";
return "the <EM> $_[0] </EM> manpage\n";
}
}
if ($item =~ s/"(.*)"/$1/ || ($item =~ /[^\w\/\-]/ && $item !~ /^\$.$/)) {
$text = "<EM> $item </EM>";
$ref = "Headers";
} else {
$text = "<EM> $item </EM>";
$ref = "Items";
}
for $podname ($pod, @inclusions){
undef $value;
if ($ref eq "Items") {
if (defined($value = $A->{$podname}->{$ref}->{$item})) {
($pod2,$num) = split(/_/,$value,2);
return (($pod eq $pod2) && ($htype eq "NAME"))
? "\n<A NAME=\"".$value."\">\n$text</A>\n"
: "\n$type$pod2.html\#".$value."\">$text<\/A>\n";
}
}
elsif($ref eq "Headers") {
if (defined($value = $A->{$podname}->{$ref}->{$item})) {
($pod2,$num) = split(/_/,$value,2);
return (($pod eq $pod2) && ($htype eq "NAME"))
? "\n<A NAME=\"".$value."\">\n$text</A>\n"
: "\n$type$pod2.html\#".$value."\">$text<\/A>\n";
}
}
}
warn "No $ref reference for $item (@_)";
return $text;
}
sub varrefs {
my ($var,$htype) = @_;
for $podname ($pod,@inclusions){
if ($value = $A->{$podname}->{"Items"}->{$var}) {
($pod2,$num) = split(/_/,$value,2);
Debug("vars", "way cool -- var ref on $var");
return (($pod eq $pod2) && ($htype eq "NAME")) # INHERIT $_, $pod
? "\n<A NAME=\"".$value."\">\n$var</A>\n"
: "\n$type$pod2.html\#".$value."\">$var<\/A>\n";
}
}
Debug( "vars", "bummer, $var not a var");
return "<STRONG> $var </STRONG>";
}
sub gensym {
my ($podname, $key) = @_;
$key =~ s/\s.*//;
($key = lc($key)) =~ tr/a-z/_/cs;
my $name = "${podname}_${key}_0";
$name =~ s/__/_/g;
while ($sawsym{$name}++) {
$name =~ s/_?(\d+)$/'_' . ($1 + 1)/e;
}
return $name;
}
sub pre_escapes {
my($thing)=@_;
$$thing=~s/&/noremap("&")/ge;
$$thing=~s/<</noremap("<<")/eg;
$$thing=~s/(?:[^ESIBLCF])</noremap("<")/eg;
$$thing=~s/E<([^\/][^<>]*)>/\&$1\;/g; # embedded special
}
sub noremap {
my $hide = $_[0];
$hide =~ tr/\000-\177/\200-\377/;
$hide;
}
sub post_escapes {
my($thing)=@_;
$$thing=~s/[^GM]>>/\>\;\>\;/g;
$$thing=~s/([^"MGA])>/$1\>\;/g;
$$thing=~tr/\200-\377/\000-\177/;
}
sub Debug {
my $level = shift;
print STDERR @_,"\n" if $Debug{$level};
}
sub dumptable {
my $t = shift;
print STDERR "TABLE DUMP $t\n";
foreach $k (sort keys %$t) {
printf STDERR "%-20s <%s>\n", $t->{$k}, $k;
}
}
sub trim {
for (@_) {
s/^\s+//;
s/\s\n?$//;
}
}
|
