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.\" ========================================================================
.\"
.IX Title "Appender::ScreenColoredLevels 3"
.TH Appender::ScreenColoredLevels 3 "2015-04-19" "perl v5.16.3" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.nh
.SH "NAME"
Log::Log4perl::Appender::ScreenColoredLevel \- Colorize messages according to level
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\&    use Log::Log4perl qw(:easy);
\&
\&    Log::Log4perl\->init(\e <<\*(AqEOT\*(Aq);
\&      log4perl.category = DEBUG, Screen
\&      log4perl.appender.Screen = \e
\&          Log::Log4perl::Appender::ScreenColoredLevels
\&      log4perl.appender.Screen.layout = \e
\&          Log::Log4perl::Layout::PatternLayout
\&      log4perl.appender.Screen.layout.ConversionPattern = \e
\&          %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";
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This appender acts like Log::Log4perl::Appender::Screen, except that
it colorizes its output, based on the priority of the message sent.
.PP
You can configure the colors and attributes used for the different
levels, by specifying them in your configuration:
.PP
.Vb 2
\&    log4perl.appender.Screen.color.TRACE=cyan
\&    log4perl.appender.Screen.color.DEBUG=bold blue
.Ve
.PP
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.
.PP
.Vb 1
\&    log4perl.appender.Screen.color.DEBUG=
.Ve
.PP
You can use any attribute supported by Term::ANSIColor as a configuration
option.
.PP
.Vb 2
\&    log4perl.appender.Screen.color.FATAL=\e
\&        bold underline blink red on_white
.Ve
.PP
The commonly used colors and attributes are:
.IP "attributes" 4
.IX Item "attributes"
\&\s-1BOLD, DARK, UNDERLINE, UNDERSCORE, BLINK\s0
.IP "colors" 4
.IX Item "colors"
\&\s-1BLACK, RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE\s0
.IP "background colors" 4
.IX Item "background colors"
\&\s-1ON_BLACK, ON_RED, ON_GREEN, ON_YELLOW, ON_BLUE, ON_MAGENTA, ON_CYAN, ON_WHITE\s0
.PP
See Term::ANSIColor for a complete list, and information on which are
supported by various common terminal emulators.
.PP
The default values for these options are:
.IP "Trace" 4
.IX Item "Trace"
Yellow
.IP "Debug" 4
.IX Item "Debug"
None (whatever the terminal default is)
.IP "Info" 4
.IX Item "Info"
Green
.IP "Warn" 4
.IX Item "Warn"
Blue
.IP "Error" 4
.IX Item "Error"
Magenta
.IP "Fatal" 4
.IX Item "Fatal"
Red
.PP
The constructor \f(CW\*(C`new()\*(C'\fR takes an optional parameter \f(CW\*(C`stderr\*(C'\fR,
if set to a true value, the appender will log to \s-1STDERR.\s0 If \f(CW\*(C`stderr\*(C'\fR
is set to a false value, it will log to \s-1STDOUT.\s0 The default setting
for \f(CW\*(C`stderr\*(C'\fR is 1, so messages will be logged to \s-1STDERR\s0 by default.
The constructor can also take an optional parameter \f(CW\*(C`color\*(C'\fR, 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.
.SS "Using ScreenColoredLevels on Windows"
.IX Subsection "Using ScreenColoredLevels on Windows"
Note that if you're using this appender on Windows, you need to fetch
Win32::Console::ANSI from \s-1CPAN\s0 and add
.PP
.Vb 1
\&    use Win32::Console::ANSI;
.Ve
.PP
to your script.
.SH "LICENSE"
.IX Header "LICENSE"
Copyright 2002\-2013 by Mike Schilli <m@perlmeister.com> 
and Kevin Goess <cpan@goess.org>.
.PP
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
.SH "AUTHOR"
.IX Header "AUTHOR"
Please contribute patches to the project on Github:
.PP
.Vb 1
\&    http://github.com/mschilli/log4perl
.Ve
.PP
Send bug reports or requests for enhancements to the authors via our
.PP
\&\s-1MAILING LIST \s0(questions, bug reports, suggestions/patches): 
log4perl\-devel@lists.sourceforge.net
.PP
Authors (please contact them via the list above, not directly):
Mike Schilli <m@perlmeister.com>,
Kevin Goess <cpan@goess.org>
.PP
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.