/usr/share/perl5/Log/Log4perl/Appender/ScreenColoredLevels.pm is in liblog-log4perl-perl 1.44-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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package Log::Log4perl::Appender::ScreenColoredLevels;
##################################################
use Log::Log4perl::Appender::Screen;
our @ISA = qw(Log::Log4perl::Appender::Screen);
use warnings;
use strict;
use Term::ANSIColor qw();
use Log::Log4perl::Level;
BEGIN {
$Term::ANSIColor::EACHLINE="\n";
}
##################################################
sub new {
##################################################
my($class, %options) = @_;
my %specific_options = ( color => {} );
for my $option ( keys %specific_options ) {
$specific_options{ $option } = delete $options{ $option } if
exists $options{ $option };
}
my $self = $class->SUPER::new( %options );
@$self{ keys %specific_options } = values %specific_options;
bless $self, __PACKAGE__; # rebless
# also accept lower/mixed case levels in config
for my $level ( keys %{ $self->{color} } ) {
my $uclevel = uc($level);
$self->{color}->{$uclevel} = $self->{color}->{$level};
}
my %default_colors = (
TRACE => 'yellow',
DEBUG => '',
INFO => 'green',
WARN => 'blue',
ERROR => 'magenta',
FATAL => 'red',
);
for my $level ( keys %default_colors ) {
if ( ! exists $self->{ 'color' }->{ $level } ) {
$self->{ 'color' }->{ $level } = $default_colors{ $level };
}
}
bless $self, $class;
}
##################################################
sub log {
##################################################
my($self, %params) = @_;
my $msg = $params{ 'message' };
if ( my $color = $self->{ 'color' }->{ $params{ 'log4p_level' } } ) {
$msg = Term::ANSIColor::colored( $msg, $color );
}
if($self->{stderr}) {
print STDERR $msg;
} else {
print $msg;
}
}
1;
__END__
=encoding utf8
=head1 NAME
Log::Log4perl::Appender::ScreenColoredLevel - Colorize messages according to level
=head1 SYNOPSIS
use Log::Log4perl qw(:easy);
Log::Log4perl->init(\ <<'EOT');
log4perl.category = DEBUG, Screen
log4perl.appender.Screen = \
Log::Log4perl::Appender::ScreenColoredLevels
log4perl.appender.Screen.layout = \
Log::Log4perl::Layout::PatternLayout
log4perl.appender.Screen.layout.ConversionPattern = \
%d %F{1} %L> %m %n
EOT
# Appears black
DEBUG "Debug Message";
# Appears green
INFO "Info Message";
# Appears blue
WARN "Warn Message";
# Appears magenta
ERROR "Error Message";
# Appears red
FATAL "Fatal Message";
=head1 DESCRIPTION
This appender acts like Log::Log4perl::Appender::Screen, except that
it colorizes its output, based on the priority of the message sent.
You can configure the colors and attributes used for the different
levels, by specifying them in your configuration:
log4perl.appender.Screen.color.TRACE=cyan
log4perl.appender.Screen.color.DEBUG=bold blue
You can also specify nothing, to indicate that level should not have
coloring applied, which means the text will be whatever the default
color for your terminal is. This is the default for debug messages.
log4perl.appender.Screen.color.DEBUG=
You can use any attribute supported by L<Term::ANSIColor> as a configuration
option.
log4perl.appender.Screen.color.FATAL=\
bold underline blink red on_white
The commonly used colors and attributes are:
=over 4
=item attributes
BOLD, DARK, UNDERLINE, UNDERSCORE, BLINK
=item colors
BLACK, RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE
=item background colors
ON_BLACK, ON_RED, ON_GREEN, ON_YELLOW, ON_BLUE, ON_MAGENTA, ON_CYAN, ON_WHITE
=back
See L<Term::ANSIColor> for a complete list, and information on which are
supported by various common terminal emulators.
The default values for these options are:
=over 4
=item Trace
Yellow
=item Debug
None (whatever the terminal default is)
=item Info
Green
=item Warn
Blue
=item Error
Magenta
=item Fatal
Red
=back
The constructor C<new()> takes an optional parameter C<stderr>,
if set to a true value, the appender will log to STDERR. If C<stderr>
is set to a false value, it will log to STDOUT. The default setting
for C<stderr> is 1, so messages will be logged to STDERR by default.
The constructor can also take an optional parameter C<color>, whose
value is a hashref of color configuration options, any levels that
are not included in the hashref will be set to their default values.
=head2 Using ScreenColoredLevels on Windows
Note that if you're using this appender on Windows, you need to fetch
Win32::Console::ANSI from CPAN and add
use Win32::Console::ANSI;
to your script.
=head1 LICENSE
Copyright 2002-2013 by Mike Schilli E<lt>m@perlmeister.comE<gt>
and Kevin Goess E<lt>cpan@goess.orgE<gt>.
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=head1 AUTHOR
Please contribute patches to the project on Github:
http://github.com/mschilli/log4perl
Send bug reports or requests for enhancements to the authors via our
MAILING LIST (questions, bug reports, suggestions/patches):
log4perl-devel@lists.sourceforge.net
Authors (please contact them via the list above, not directly):
Mike Schilli <m@perlmeister.com>,
Kevin Goess <cpan@goess.org>
Contributors (in alphabetical order):
Ateeq Altaf, Cory Bennett, Jens Berthold, Jeremy Bopp, Hutton
Davidson, Chris R. Donnelly, Matisse Enzer, Hugh Esco, Anthony
Foiani, James FitzGibbon, Carl Franks, Dennis Gregorovic, Andy
Grundman, Paul Harrington, Alexander Hartmaier David Hull,
Robert Jacobson, Jason Kohles, Jeff Macdonald, Markus Peter,
Brett Rann, Peter Rabbitson, Erik Selberg, Aaron Straup Cope,
Lars Thegler, David Viner, Mac Yang.
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