view release on metacpan or  search on metacpan

lib/Alvis/Document.pm  view on Meta::CPAN

package Alvis::Document;

########################################################################
#
# Assembles an ALVIS XML documentRecord from given pieces
#
#   -- Kimmo Valtonen
#
########################################################################

use strict;
use warnings;

use Carp;
use Data::Dumper;
use Digest::MD5;
use Compress::Zlib;
use MIME::Base64;
use Encode;

use Alvis::Document::Meta;
use Alvis::Document::Links;

use strict;

my ($ERR_OK,
    $ERR_CAN_DOC,
    $ERR_META,
    $ERR_DATE,
    $ERR_URL,
    $ERR_NO_LINK_TYPE,
    $ERR_LINKS_TXT
    )=(0..6);

my %ErrMsgs=($ERR_OK=>"",
	     $ERR_CAN_DOC=>"No canonicalDocument.",
	     $ERR_META=>"No meta information.",
	     $ERR_DATE=>"No document date.",
	     $ERR_URL=>"No URL.",
	     $ERR_NO_LINK_TYPE=>"No type for a link.",
	     $ERR_LINKS_TXT=>"Assembling links text failed."
	     );

sub new
{
    my $proto=shift;
 
    my $class=ref($proto)||$proto;
    my $parent=ref($proto)&&$proto;
    my $self={};
    bless($self,$class);

    $self->_set_err_state($ERR_OK);

    $self->_init(@_);

    return $self;
}

sub _init
{
    my $self=shift;

    $self->{includeOriginalDocument}=1;

    if (defined(@_))
    {
        my %args=@_;
        @$self{ keys %args }=values(%args);
    }
}

sub _set_err_state
{
    my $self=shift;
    my $errcode=shift;
    my $errmsg=shift;

    if (!defined($errcode))
    {
	confess("set_err_state() called with an undefined argument.");
    }

    if (exists($ErrMsgs{$errcode}))
    {
	if ($errcode==$ERR_OK)
	{
	    $self->{'errstr'}="";
	}
	else
	{
	    $self->{'errstr'}.=" " . $ErrMsgs{$errcode};
	    if (defined($errmsg))
	    {
		$self->{'errstr'}.=" " . $errmsg;
	    }
	}
    }
    else
    {
	confess("Internal error: set_err_state() called with an " .
		"unrecognized argument ($errcode).")
    }
}

sub errmsg
{
    my $self=shift;
    
    return $self->{errstr};
}