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# :include: rdoc/NDC
#
# == Other Info
#
# Version:: $Id$
# Author:: Colby Gutierrez-Kraybill <colby(at)astro.berkeley.edu>
module Log4r
NDCNAME = "log4rNDC"
NDCNAMEMAXDEPTH = "log4rNDCMAXDEPTH"
NDCDEFAULTMAXDEPTH = 256
# See log4r/NDC.rb
class NDC
private_class_method :new
def self.check_thread_instance()
if ( Thread.current[NDCNAME] == nil ) then
Thread.current[NDCNAME] = Array.new
Thread.current[NDCNAMEMAXDEPTH] = NDCDEFAULTMAXDEPTH
end
end
def self.clear()
self.check_thread_instance()
Thread.current[NDCNAME].clear
end
def self.clone_stack()
self.check_thread_instance()
return Thread.current[NDCNAME].clone
end
def self.get_depth()
self.check_thread_instance()
return Thread.current[NDCNAME].length
end
def self.inherit( a_stack )
if ( a_stack.class == Array ) then
if ( Thread.current[NDCNAME] != nil ) then
Thread.current[NDCNAME].clear
Thread.current[NDCNAME] = nil
end
Thread.current[NDCNAME] = a_stack
else
raise "Expecting Array in NDC.inherit"
end
end
def self.get()
self.check_thread_instance
return Thread.current[NDCNAME] * " "
end
def self.peek()
self.check_thread_instance()
return Thread.current[NDCNAME].last
end
def self.pop()
self.check_thread_instance()
return Thread.current[NDCNAME].pop
end
def self.push( value )
self.check_thread_instance()
if ( Thread.current[NDCNAME].length < Thread.current[NDCNAMEMAXDEPTH] ) then
Thread.current[NDCNAME].push( value )
end
end
def self.remove()
self.check_thread_instance()
Thread.current[NDCNAME].clear
Thread.current[NDCNAMEMAXDEPTH] = nil
Thread.current[NDCNAME] = nil
end
def self.set_max_depth( max_depth )
self.check_thread_instance()
Thread.current[NDCNAMEMAXDEPTH] = max_depth
end
end
end
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