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#!/usr/bin/perl -w
#
# This program implements a simple translator to convert POD
# to HTML, Text, or back to POD again (e.g. for normalising a
# document). You can easily extend it to work with any other
# view modules you create which convert POD to different formats
# or in different styles.
#
# Written by Andy Wardley <abw@kfs.org>. This is free software.
#
# Extended by Andrew Ford to check for any other installed viewers.
use Pod::POM;
use File::Basename;
use Getopt::Long;
my $PROGRAM = 'pom2';
my $program = basename($0);
my $format;
my $views = {
pod => 'Pod',
text => 'Text',
html => 'HTML',
};
my %options;
die usage() if grep(/^--?h(elp)?$/, @ARGV);
while (@ARGV and $ARGV[0] =~ /^--([^=]+)(=(.*))?$/) {
$options{$1} = $2 ? $3 : 1;
shift;
}
if ($program =~ /^$PROGRAM(.+)$/) {
$format = $1;
}
else {
$format = shift
|| die usage('no output format specified');
}
while (@ARGV and $ARGV[0] =~ /^--([^=]+)(=(.*))?$/) {
$options{$1} = $2 ? $3 : 1;
shift;
}
my $file = shift
|| die usage('no filename specified');
$format = lc $format;
my $view = $views->{ $format };
if (!$view) {
DIR:
foreach my $libdir (@INC) {
foreach (<$libdir/Pod/POM/View/*.pm>) {
(my $module = $_) =~ s{.*/([^/]+).pm$}{$1};
if (lc($module) eq $format) {
$view = $1;
last DIR;
}
else {
$views->{lc($module)} = $module;
}
}
}
$view || die usage("invalid format '$format', try one of: "
. join(', ', sort keys %$views));
}
$view = "Pod::POM::View::$view";
if (keys %options) {
eval "use $view";
$view = $view->new(%options);
}
Pod::POM->default_view($view)
|| die "$Pod::POM::ERROR\n";
my $parser;
{
no warnings 'once'; # $Pod::POM::ERROR is only used once
$parser = Pod::POM->new( warn => 1 )
|| die "$Pod::POM::ERROR\n";
}
my $pom = $parser->parse_file($file)
|| die $parser->error(), "\n";
print $pom;
#------------------------------------------------------------------------
sub usage {
my $msg = shift || '';
if ($program =~ /^$PROGRAM$/) {
$program = "pom2 format";
}
return <<EOF;
${msg}
usage: $program file
EOF
}
__END__
=head1 NAME
pom2 - convert POD to Text, HTML, etc., with Pod::POM
=head1 SYNOPSIS
pom2 text MyFile.pm > MyFile.txt
pom2 html MyFile.pm > MyFile.html
pom2 pod MyFile.pm > Myfile.pod
pom2 format [options] MyFile.pm > Myfile.xyz
=head1 DESCRIPTION
This script uses C<Pod::POM> to convert a Pod document into text,
HTML, back into Pod (e.g. to normalise a document to fix any
markup errors), or any other format for which you have a view
module.
If the viewer is not one of the viewers bundled with C<Pod::POM>, the script
searches for an installed C<Pod::POM::View> module that matches the
specified format. For example if you have C<Pod::POM::View::DocBook>
installed then you could say:
pod2 docbook MyFile.pm > MyFile.xml
If any options other than C<--help> are specified then they are passed
to the constructor method of the view class. For example:
pod2 docbook --root=chapter --titlecasing MyFile.pm > MyFile.xml
would convert the Pod document to a DocBook chapter document with the
titlecasing option enabled. Note that any string prefixed by "C<-->" is
taken as a valid option and passed to the constructor; if no value is
specified then a value of 1 is passed in.
=head1 AUTHOR
Andy Wardley E<lt>abw@kfs.orgE<gt>
extended by Andrew Ford E<lt>A.Ford@ford-mason.co.ukE<gt>
=head1 VERSION
This is version 0.3 of pom2.
=head1 COPYRIGHT
Copyright (C) 2000, 2001 Andy Wardley. All Rights Reserved.
Copyright (C) 2009 Andrew Ford. All Rights Reserved.
This module is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
=head1 SEE ALSO
For further information please see L<Pod::POM>.