#!./perl -Ilib -w
# This file should really be extracted from a .PL file
use strict;
use Config; # for config options in the makefile
use Getopt::Long; # for command-line parsing
use Cwd;
use Pod::Html;
=head1 NAME
installhtml - converts a collection of POD pages to HTML format.
=head1 SYNOPSIS
installhtml [--help] [--podpath=<name>:...:<name>] [--podroot=<name>]
[--htmldir=<name>] [--htmlroot=<name>] [--norecurse] [--recurse]
[--splithead=<name>,...,<name>] [--splititem=<name>,...,<name>]
[--libpods=<name>,...,<name>] [--verbose]
=head1 DESCRIPTION
I<installhtml> converts a collection of POD pages to a corresponding
collection of HTML pages. This is primarily used to convert the pod
pages found in the perl distribution.
=head1 OPTIONS
=over 4
=item B<--help> help
Displays the usage.
=item B<--podroot> POD search path base directory
The base directory to search for all .pod and .pm files to be converted.
Default is current directory.
=item B<--podpath> POD search path
The list of directories to search for .pod and .pm files to be converted.
Default is `podroot/.'.
=item B<--recurse> recurse on subdirectories
Whether or not to convert all .pm and .pod files found in subdirectories
too. Default is to not recurse.
=item B<--htmldir> HTML destination directory
The base directory which all HTML files will be written to. This should
be a path relative to the filesystem, not the resulting URL.
=item B<--htmlroot> URL base directory
The base directory which all resulting HTML files will be visible at in
a URL. The default is `/'.
=item B<--splithead> POD files to split on =head directive
Comma-separated list of pod files to split by the =head directive. The
.pod suffix is optional. These files should have names specified
relative to podroot.
=item B<--splititem> POD files to split on =item directive
Comma-separated list of all pod files to split by the =item directive.
The .pod suffix is optional. I<installhtml> does not do the actual
split, rather it invokes I<splitpod> to do the dirty work. As with
--splithead, these files should have names specified relative to podroot.
=item B<--splitpod> Directory containing the splitpod program
The directory containing the splitpod program. The default is `podroot/pod'.
=item B<--libpods> library PODs for LE<lt>E<gt> links
Comma-separated list of "library" pod files. This is the same list that
will be passed to pod2html when any pod is converted.
=item B<--verbose> verbose output
Self-explanatory.
=back
=head1 EXAMPLE
The following command-line is an example of the one we use to convert
perl documentation:
./installhtml --podpath=lib:ext:pod:vms \
--podroot=/usr/src/perl \
--htmldir=/perl/nmanual \
--htmlroot=/perl/nmanual \
--splithead=pod/perlipc \
--splititem=pod/perlfunc \
--libpods=perlfunc,perlguts,perlvar,perlrun,perlop \
--recurse \
--verbose
=head1 AUTHOR
Chris Hall E<lt>hallc@cs.colorado.eduE<gt>
=head1 TODO
=cut
my $usage;
$usage =<<END_OF_USAGE;
Usage: $0 --help --podpath=<name>:...:<name> --podroot=<name>
--htmldir=<name> --htmlroot=<name> --norecurse --recurse
--splithead=<name>,...,<name> --splititem=<name>,...,<name>
--libpods=<name>,...,<name> --verbose
--help - this message
--podpath - colon-separated list of directories containing .pod and
.pm files to be converted (. by default).
--podroot - filesystem base directory from which all relative paths in
podpath stem (default is .).
--htmldir - directory to store resulting html files in relative
to the filesystem (\$podroot/html by default).
--htmlroot - http-server base directory from which all relative paths
in podpath stem (default is /).
--libpods - comma-separated list of files to search for =item pod
directives in as targets of C<> and implicit links (empty
by default).
--norecurse - don't recurse on those subdirectories listed in podpath.
(default behavior).
--recurse - recurse on those subdirectories listed in podpath
--splithead - comma-separated list of .pod or .pm files to split. will
split each file into several smaller files at every occurrence
of a pod =head[1-6] directive.
--splititem - comma-separated list of .pod or .pm files to split using
splitpod.
--splitpod - directory where the program splitpod can be found
(\$podroot/pod by default).
--verbose - self-explanatory.
END_OF_USAGE
my (@libpods, @podpath, $podroot, $htmldir, $htmlroot, $recurse, @splithead,
@splititem, $splitpod, $verbose, $pod2html);
@libpods = ();
@podpath = ( "." ); # colon-separated list of directories containing .pod
# and .pm files to be converted.
$podroot = "."; # assume the pods we want are here
$htmldir = ""; # nothing for now...
$htmlroot = "/"; # default value
$recurse = 0; # default behavior
@splithead = (); # don't split any files by default
@splititem = (); # don't split any files by default
$splitpod = ""; # nothing for now.
$verbose = 0; # whether or not to print debugging info
$pod2html = "pod/pod2html";
usage("") unless @ARGV;
# Overcome shell's p1,..,p8 limitation.
# See vms/descrip_mms.template -> descrip.mms for invokation.
if ( $^O eq 'VMS' ) { @ARGV = split(/\s+/,$ARGV[0]); }
use vars qw($opt_htmldir $opt_htmlroot $opt_podroot $opt_splitpod
$opt_verbose $opt_help $opt_podpath $opt_splithead $opt_splititem
$opt_libpods $opt_recurse);
# parse the command-line
my $result = GetOptions( qw(
help
podpath=s
podroot=s
htmldir=s
htmlroot=s
libpods=s
recurse!
splithead=s
splititem=s
splitpod=s
verbose
));
usage("invalid parameters") unless $result;
parse_command_line();
# set these variables to appropriate values if the user didn't specify
# values for them.
$htmldir = "$htmlroot/html" unless $htmldir;
$splitpod = "$podroot/pod" unless $splitpod;
# make sure that the destination directory exists
(mkdir($htmldir, 0755) ||
die "$0: cannot make directory $htmldir: $!\n") if ! -d $htmldir;
# the following array will eventually contain files that are to be
# ignored in the conversion process. these are files that have been
# process by splititem or splithead and should not be converted as a
# result.
my @ignore = ();
my @splitdirs;
# split pods. its important to do this before convert ANY pods because
# it may effect some of the links
@splitdirs = (); # files in these directories won't get an index
split_on_head($podroot, $htmldir, \@splitdirs, \@ignore, @splithead);
split_on_item($podroot, \@splitdirs, \@ignore, @splititem);
# convert the pod pages found in @poddirs
#warn "converting files\n" if $verbose;
#warn "\@ignore\t= @ignore\n" if $verbose;
foreach my $dir (@podpath) {
installdir($dir, $recurse, $podroot, \@splitdirs, \@ignore);
}
# now go through and create master indices for each pod we split
foreach my $dir (@splititem) {
print "creating index $htmldir/$dir.html\n" if $verbose;
create_index("$htmldir/$dir.html", "$htmldir/$dir");
}
foreach my $dir (@splithead) {
$dir .= ".pod" unless $dir =~ /(\.pod|\.pm)$/;
# let pod2html create the file
runpod2html($dir, 1);
# now go through and truncate after the index
$dir =~ /^(.*?)(\.pod|\.pm)?$/sm;
my $file = "$htmldir/$1";
print "creating index $file.html\n" if $verbose;
# read in everything until what would have been the first =head
# directive, patching the index as we go.
open(H, "<$file.html") ||
die "$0: error opening $file.html for input: $!\n";
$/ = "";
my @data = ();
while (<H>) {
last if /NAME=/;
$_ =~ s{HREF="#(.*)">}{
my $url = "$file/$1.html" ;
$url = Pod::Html::relativize_url( $url, "$file.html" )
if ( ! defined $opt_htmlroot || $opt_htmlroot eq '' ) ;
"HREF=\"$url\">" ;
}eg;
push @data, $_;
}
close(H);
# now rewrite the file
open(H, ">$file.html") ||
die "$0: error opening $file.html for output: $!\n";
print H "@data", "\n";
close(H);
}
##############################################################################
sub usage {
warn "$0: @_\n" if @_;
die $usage;
}
sub parse_command_line {
usage() if defined $opt_help;
$opt_help = ""; # make -w shut up
# list of directories
@podpath = split(":", $opt_podpath) if defined $opt_podpath;
# lists of files
@splithead = split(",", $opt_splithead) if defined $opt_splithead;
@splititem = split(",", $opt_splititem) if defined $opt_splititem;
@libpods = split(",", $opt_libpods) if defined $opt_libpods;
$htmldir = $opt_htmldir if defined $opt_htmldir;
$htmlroot = $opt_htmlroot if defined $opt_htmlroot;
$podroot = $opt_podroot if defined $opt_podroot;
$splitpod = $opt_splitpod if defined $opt_splitpod;
$recurse = $opt_recurse if defined $opt_recurse;
$verbose = $opt_verbose if defined $opt_verbose;
}
sub absolute_path {
my($cwd, $path) = @_;
return "$cwd/$path" unless $path =~ m:/:;
# add cwd if path is not already an absolute path
$path = "$cwd/$path" if (substr($path,0,1) ne '/');
return $path;
}
sub create_index {
my($html, $dir) = @_;
my(@files, @filedata, @index, $file);
my($lcp1,$lcp2);
# get the list of .html files in this directory
opendir(DIR, $dir) ||
die "$0: error opening directory $dir for reading: $!\n";
@files = sort(grep(/\.html?$/, readdir(DIR)));
closedir(DIR);
open(HTML, ">$html") ||
die "$0: error opening $html for output: $!\n";
# for each .html file in the directory, extract the index
# embedded in the file and throw it into the big index.
print HTML "<DL COMPACT>\n";
foreach $file (@files) {
$/ = "";
open(IN, "<$dir/$file") ||
die "$0: error opening $dir/$file for input: $!\n";
@filedata = <IN>;
close(IN);
# pull out the NAME section
my $name;
($name) = grep(/NAME=/, @filedata);
($lcp1,$lcp2) = ($name =~ m,/H1>\s(\S+)\s[\s-]*(.*?)\s*$,sm);
if (defined $lcp1 and $lcp1 eq '<P>') { # Uninteresting. Try again.
($lcp1,$lcp2) = ($name =~ m,/H1>\s<P>\s(\S+)\s[\s-]*(.*?)\s*$,sm);
}
my $url= "$dir/$file" ;
if ( ! defined $opt_htmlroot || $opt_htmlroot eq '' ) {
$url = Pod::Html::relativize_url( "$dir/$file", $html ) ;
}
print HTML qq(<A HREF="$url">);
print HTML "<DT>$lcp1</A><DD>$lcp2\n" if defined $lcp1;
# print HTML qq(<A HREF="$url">$lcp1</A><BR>\n") if defined $lcp1;
next;
@index = grep(/<!-- INDEX BEGIN -->.*<!-- INDEX END -->/s,
@filedata);
for (@index) {
s/<!-- INDEX BEGIN -->(\s*<!--)(.*)(-->\s*)<!-- INDEX END -->/$lcp2/s;
s,#,$dir/$file#,g;
# print HTML "$_\n";
print HTML "$_\n<P><HR><P>\n";
}
}
print HTML "</DL>\n";
close(HTML);
}
sub split_on_head {
my($podroot, $htmldir, $splitdirs, $ignore, @splithead) = @_;
my($pod, $dirname, $filename);
# split the files specified in @splithead on =head[1-6] pod directives
print "splitting files by head.\n" if $verbose && $#splithead >= 0;
foreach $pod (@splithead) {
# figure out the directory name and filename
$pod =~ s,^([^/]*)$,/$1,;
$pod =~ m,(.*?)/(.*?)(\.pod)?$,;
$dirname = $1;
$filename = "$2.pod";
# since we are splitting this file it shouldn't be converted.
push(@$ignore, "$podroot/$dirname/$filename");
# split the pod
splitpod("$podroot/$dirname/$filename", "$podroot/$dirname", $htmldir,
$splitdirs);
}
}
sub split_on_item {
my($podroot, $splitdirs, $ignore, @splititem) = @_;
my($pwd, $dirname, $filename);
print "splitting files by item.\n" if $verbose && $#splititem >= 0;
$pwd = getcwd();
my $splitter = absolute_path($pwd, "$splitpod/splitpod");
foreach my $pod (@splititem) {
# figure out the directory to split into
$pod =~ s,^([^/]*)$,/$1,;
$pod =~ m,(.*?)/(.*?)(\.pod)?$,;
$dirname = "$1/$2";
$filename = "$2.pod";
# since we are splitting this file it shouldn't be converted.
push(@$ignore, "$podroot/$dirname.pod");
# split the pod
push(@$splitdirs, "$podroot/$dirname");
if (! -d "$podroot/$dirname") {
mkdir("$podroot/$dirname", 0755) ||
die "$0: error creating directory $podroot/$dirname: $!\n";
}
chdir("$podroot/$dirname") ||
die "$0: error changing to directory $podroot/$dirname: $!\n";
die "$splitter not found. Use '-splitpod dir' option.\n"
unless -f $splitter;
system("perl", $splitter, "../$filename") &&
warn "$0: error running '$splitter ../$filename'"
." from $podroot/$dirname";
}
chdir($pwd);
}
#
# splitpod - splits a .pod file into several smaller .pod files
# where a new file is started each time a =head[1-6] pod directive
# is encountered in the input file.
#
sub splitpod {
my($pod, $poddir, $htmldir, $splitdirs) = @_;
my(@poddata, @filedata, @heads);
my($file, $i, $j, $prevsec, $section, $nextsec);
print "splitting $pod\n" if $verbose;
# read the file in paragraphs
$/ = "";
open(SPLITIN, "<$pod") ||
die "$0: error opening $pod for input: $!\n";
@filedata = <SPLITIN>;
close(SPLITIN) ||
die "$0: error closing $pod: $!\n";
# restore the file internally by =head[1-6] sections
@poddata = ();
for ($i = 0, $j = -1; $i <= $#filedata; $i++) {
$j++ if ($filedata[$i] =~ /^\s*=head[1-6]/);
if ($j >= 0) {
$poddata[$j] = "" unless defined $poddata[$j];
$poddata[$j] .= "\n$filedata[$i]" if $j >= 0;
}
}
# create list of =head[1-6] sections so that we can rewrite
# L<> links as necessary.
my %heads = ();
foreach $i (0..$#poddata) {
$heads{htmlize($1)} = 1 if $poddata[$i] =~ /=head[1-6]\s+(.*)/;
}
# create a directory of a similar name and store all the
# files in there
$pod =~ s,.*/(.*),$1,; # get the last part of the name
my $dir = $pod;
$dir =~ s/\.pod//g;
push(@$splitdirs, "$poddir/$dir");
mkdir("$poddir/$dir", 0755) ||
die "$0: could not create directory $poddir/$dir: $!\n"
unless -d "$poddir/$dir";
$poddata[0] =~ /^\s*=head[1-6]\s+(.*)/;
$section = "";
$nextsec = $1;
# for each section of the file create a separate pod file
for ($i = 0; $i <= $#poddata; $i++) {
# determine the "prev" and "next" links
$prevsec = $section;
$section = $nextsec;
if ($i < $#poddata) {
$poddata[$i+1] =~ /^\s*=head[1-6]\s+(.*)/;
$nextsec = $1;
} else {
$nextsec = "";
}
# determine an appropriate filename (this must correspond with
# what pod2html will try and guess)
# $poddata[$i] =~ /^\s*=head[1-6]\s+(.*)/;
$file = "$dir/" . htmlize($section) . ".pod";
# create the new .pod file
print "\tcreating $poddir/$file\n" if $verbose;
open(SPLITOUT, ">$poddir/$file") ||
die "$0: error opening $poddir/$file for output: $!\n";
$poddata[$i] =~ s,L<([^<>]*)>,
defined $heads{htmlize($1)} ? "L<$dir/$1>" : "L<$1>"
,ge;
print SPLITOUT $poddata[$i]."\n\n";
print SPLITOUT "=over 4\n\n";
print SPLITOUT "=item *\n\nBack to L<$dir/\"$prevsec\">\n\n" if $prevsec;
print SPLITOUT "=item *\n\nForward to L<$dir/\"$nextsec\">\n\n" if $nextsec;
print SPLITOUT "=item *\n\nUp to L<$dir>\n\n";
print SPLITOUT "=back\n\n";
close(SPLITOUT) ||
die "$0: error closing $poddir/$file: $!\n";
}
}
#
# installdir - takes care of converting the .pod and .pm files in the
# current directory to .html files and then installing those.
#
sub installdir {
my($dir, $recurse, $podroot, $splitdirs, $ignore) = @_;
my(@dirlist, @podlist, @pmlist, $doindex);
@dirlist = (); # directories to recurse on
@podlist = (); # .pod files to install
@pmlist = (); # .pm files to install
# should files in this directory get an index?
$doindex = (grep($_ eq "$podroot/$dir", @$splitdirs) ? 0 : 1);
opendir(DIR, "$podroot/$dir")
|| die "$0: error opening directory $podroot/$dir: $!\n";
# find the directories to recurse on
@dirlist = map { if ($^O eq 'VMS') {/^(.*)\.dir$/i; "$dir/$1";} else {"$dir/$_";}}
grep(-d "$podroot/$dir/$_" && !/^\.{1,2}/, readdir(DIR)) if $recurse;
rewinddir(DIR);
# find all the .pod files within the directory
@podlist = map { /^(.*)\.pod$/; "$dir/$1" }
grep(! -d "$podroot/$dir/$_" && /\.pod$/, readdir(DIR));
rewinddir(DIR);
# find all the .pm files within the directory
@pmlist = map { /^(.*)\.pm$/; "$dir/$1" }
grep(! -d "$podroot/$dir/$_" && /\.pm$/, readdir(DIR));
closedir(DIR);
# recurse on all subdirectories we kept track of
foreach $dir (@dirlist) {
installdir($dir, $recurse, $podroot, $splitdirs, $ignore);
}
# install all the pods we found
foreach my $pod (@podlist) {
# check if we should ignore it.
next if grep($_ eq "$podroot/$pod.pod", @$ignore);
# check if a .pm files exists too
if (grep($_ eq "$pod.pm", @pmlist)) {
print "$0: Warning both `$podroot/$pod.pod' and "
. "`$podroot/$pod.pm' exist, using pod\n";
push(@ignore, "$pod.pm");
}
runpod2html("$pod.pod", $doindex);
}
# install all the .pm files we found
foreach my $pm (@pmlist) {
# check if we should ignore it.
next if grep($_ eq "$pm.pm", @ignore);
runpod2html("$pm.pm", $doindex);
}
}
#
# runpod2html - invokes pod2html to convert a .pod or .pm file to a .html
# file.
#
sub runpod2html {
my($pod, $doindex) = @_;
my($html, $i, $dir, @dirs);
$html = $pod;
$html =~ s/\.(pod|pm)$/.html/g;
# make sure the destination directories exist
@dirs = split("/", $html);
$dir = "$htmldir/";
for ($i = 0; $i < $#dirs; $i++) {
if (! -d "$dir$dirs[$i]") {
mkdir("$dir$dirs[$i]", 0755) ||
die "$0: error creating directory $dir$dirs[$i]: $!\n";
}
$dir .= "$dirs[$i]/";
}
# invoke pod2html
print "$podroot/$pod => $htmldir/$html\n" if $verbose;
#system("./pod2html",
Pod::Html'pod2html(
#Pod::Html'pod2html($pod2html,
"--htmldir=$htmldir",
"--htmlroot=$htmlroot",
"--podpath=".join(":", @podpath),
"--podroot=$podroot", "--netscape",
"--header",
($doindex ? "--index" : "--noindex"),
"--" . ($recurse ? "" : "no") . "recurse",
($#libpods >= 0) ? "--libpods=" . join(":", @libpods) : "",
"--infile=$podroot/$pod", "--outfile=$htmldir/$html");
die "$0: error running $pod2html: $!\n" if $?;
}
sub htmlize { htmlify(0, @_) }