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#!/usr/bin/perl -w
#
# This program demonstrates how you can easily write a custom 
# processor for converting Pod documents to the format of your
# choice in the style of your choice.
#
# Written by Ron Savage <ron@savage.net.au> with some minor 
# changes by Andy Wardley <abw@kfs.org>. 
#
# Also check out Ron's Perl pages for his own version of this 
# script, fancy-pom2.pl, which is likely to be further advanced
# and more recently updated:
#
#   http://savage.net.au/Perl.html#fancy-pom2.pl
#

use Pod::POM;
use File::Basename;

my $BGCOLOR = '#80C0ff';

my $program = basename($0);
my $format;

die usage() if grep(/^--?h(elp)?$/, @ARGV);

my $file = shift
    || die "usage: $program podfile\n";

# create a Pod::POM parser
my $parser = Pod::POM->new( warn => 1 )
    || die "$Pod::POM::ERROR\n";

# parse the file to build a POM 
my $pom = $parser->parse_file($file)
    || die $parser->error(), "\n";

my (@toc, @content);

# get each =head1 to make a table of content
for my $head1 ($pom->head1()) {
    push(@toc, My::View->print($head1->title()) );
}

# generate HTML for table of contents 
@toc = map { 
    my $name = $_;
    $name =~ s/\W+/_/g;
    "<tr><td align=\"center\"><a href=\"#$name\">$_</a></td></tr>\n" 
} @toc;

# generate HTML for page content
@content = My::View->print($pom);

# cleanup file name to use as title
$file =~ s|\\|/|g;
$file =~ s|.*/||;
$file = $1 if ($file =~ /^(.+)\..+$/);
$file = ucfirst lc $file;

# print!
print <<EOF;
<a name="top"></a>

<div align="center">

  <h1>Table of Contents</h1>

  <table bgcolor="$BGCOLOR" summary="Table of Contents">
  @toc
  </table>

  <h1>$file</h1>

  <table bgcolor="$BGCOLOR" summary="Body">
    <tr>
      <td align="left">@content</td>
    </tr>
    <tr>
      <td>&nbsp;</td>
    </tr>
    <tr>
      <td><a href="#top">Top of page</a></td>
    </tr>
  </table>

</div>
EOF


#------------------------------------------------------------------------
# Here we define a custom view as a subclass of Pod::POM::View::HTML.
# You can add any methods here like view_head2(), view_over(), etc., 
# to implement different handlers for different elements in the document.
#------------------------------------------------------------------------

package My::View;

use base qw( Pod::POM::View::HTML );

sub view_head1
{
    my($self, $item) = @_;

    # convert non-word characters in name to _
    my $title = $item->title->present($self);
    my $name  = $title;
    $name =~ s/\W+/_/g;

    return "<h2><a name=\"$name\">$title</a></h2>\n\n"
	 . $item->content->present($self);
}