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module Logging::Appenders
# This class is provides an Appender base class for writing to the standard IO
# stream - STDOUT and STDERR. This class should not be instantiated directly.
# The `Stdout` and `Stderr` subclasses should be used.
class Console < ::Logging::Appenders::IO
# call-seq:
# Stdout.new( name = 'stdout' )
# Stderr.new( :layout => layout )
# Stdout.new( name = 'stdout', :level => 'info' )
#
# Creates a new Stdout/Stderr Appender. The name 'stdout'/'stderr' will be
# used unless another is given. Optionally, a layout can be given for the
# appender to use (otherwise a basic appender will be created) and a log
# level can be specified.
#
# Options:
#
# :layout => the layout to use when formatting log events
# :level => the level at which to log
#
def initialize( *args )
name = self.class.name.split("::").last.downcase
io = Object.const_get(name.upcase)
opts = args.last.is_a?(Hash) ? args.pop : {}
name = args.shift unless args.empty?
opts[:encoding] = io.external_encoding if io.respond_to? :external_encoding
super(name, io, opts)
rescue NameError
raise RuntimeError, "Please do not use the `Logging::Appenders::Console` class directly - " +
"use `Logging::Appenders::Stdout` and `Logging::Appenders::Stderr` instead"
end
end
# This class provides an Appender that can write to STDOUT.
Stdout = Class.new(Console)
# This class provides an Appender that can write to STDERR.
Stderr = Class.new(Console)
# Accessor / Factory for the Stdout appender.
#
def self.stdout( *args )
if args.empty?
return self['stdout'] || ::Logging::Appenders::Stdout.new
end
::Logging::Appenders::Stdout.new(*args)
end
# Accessor / Factory for the Stderr appender.
#
def self.stderr( *args )
if args.empty?
return self['stderr'] || ::Logging::Appenders::Stderr.new
end
::Logging::Appenders::Stderr.new(*args)
end
end
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