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package XTM::Log;
use strict;
use vars qw($VERSION @ISA @EXPORT @EXPORT_OK);
require Exporter;
require AutoLoader;
@ISA = qw(Exporter AutoLoader);
@EXPORT = qw();
@EXPORT_OK = qw( flog elog);
$VERSION = '0.01';
use vars qw($logfile $loglevel);
$logfile = 'xtmd.log';
$loglevel = 1;
=pod
=head1 NAME
XTM::Log - Topic Map Logger
=head1 SYNOPSIS
use XTM::Log;
=head1 DESCRIPTION
This package provides some logging facilities for the XTM::* packages. Basically,
it provides STDERR and file based logging.
=head1 INTERFACE
=head2 Global Variables
Following variables can be set to control the behavior of this package:
=over
=item C<logfile> (xtmd.log)
=item C<loglevel> (1)
=back
=head1 Methods
=over
=item I<flog>
provides some basic file logging facilities. Please refer to the global variables for configuration.
It logs messages to the current C<logfile> whenever called
and the passed loglevel is at least the minimum (as configured via the global variable C<loglevel>).
Parameters are:
=over
=item C<entity>
Here you can provide some descriptive text of the module logging.
=item C<loglevel>
current loglevel
=back
Any additional parameters are copied (for SCALARs) or output via Data::Dumper::Dumper.
Example:
flog ('MyProgram', 4, 'Logging a line', $line, \%context);
=cut
use POSIX qw(strftime);
use File::Slurp;
sub flog {
my $entity = shift;
my $level = shift || 1;
my @msgs = @_;
unless ($level > $loglevel) {
append_file($logfile, (strftime "%Y %a %b %e %H:%M:%S", localtime)." - $entity($level): ".
(@msgs ? join (" ", @msgs) : "Here!!").
"\n");
}
}
=pod
=item I<elog>
provides some basic STDERR logging facilities. Otherwise see C<flog>.
Example:
elog ('MyProgram', 4, 'Logging a line', $line, \%context);
=cut
use Data::Dumper;
sub elog {
my $entity = shift;
my $level = shift || 1;
return if $level > $loglevel;
my $m;
foreach my $v (@_) {
if (!ref($v)) {
$m .= $v;
} else {
$m .= Dumper $v;
}
}
print STDERR (strftime "%Y %a %b %e %H:%M:%S", localtime)." - $entity($level): ". ($m ? $m : "Here!!"). "\n";
}
=pod
=back
=head1 SEE ALSO
L<XTM>
=head1 AUTHOR INFORMATION
Copyright 2001, Robert Barta <rho@telecoma.net>, All rights reserved.
This library is free software; you can redistribute it
and/or modify it under the same terms as Perl itself.
=cut
1;
__END__
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