Sha256: 50f1683219b7c66e5d5762b55673de34f7abeab3350164836e3c58ce0528a2d6
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Versions: 229
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Stored size: 1.98 KB
Contents
require 'nokogiri'
class AbstractXMLInstantiator
class Visitor < Nokogiri::XML::SAX::Document
def initialize(inst, gcSuspendCount)
@instantiator = inst
@gcSuspendCount = gcSuspendCount
@namespaces = {}
end
def start_element_namespace(tag, attributes, prefix, uri, ns)
controlGC
ns.each{|n| @namespaces[n[0]] = n[1]}
attrs = attributes.collect{|a| [a.prefix ? a.prefix+":"+a.localname : a.localname, a.value]}
@instantiator.start_tag(prefix, tag, @namespaces, Hash[*(attrs.flatten)])
attrs.each { |pair| @instantiator.set_attribute(pair[0], pair[1]) }
end
def end_element_namespace(tag, prefix, uri)
@instantiator.end_tag(prefix, tag)
end
def characters(str)
@instantiator.text(str)
end
def controlGC
return unless @gcSuspendCount > 0
@gcCounter ||= 0
@gcCounter += 1
if @gcCounter == @gcSuspendCount
@gcCounter = 0
GC.enable
ObjectSpace.garbage_collect
GC.disable
end
end
end
# Parses str and calls start_tag, end_tag, set_attribute and text methods of a subclass.
#
# If gcSuspendCount is specified, the garbage collector will be disabled for that
# number of start or end tags. After that period it will clean up and then be disabled again.
# A value of about 1000 can significantly improve overall performance.
# The memory usage normally does not increase.
# Depending on the work done for every xml tag the value might have to be adjusted.
#
def instantiate(str, gcSuspendCount=0)
gcDisabledBefore = GC.disable
gcSuspendCount = 0 if gcDisabledBefore
begin
visitor = Visitor.new(self, gcSuspendCount)
parser = Nokogiri::XML::SAX::Parser.new(visitor)
parser.parse(str) do |ctx|
@parserContext = ctx
end
ensure
GC.enable unless gcDisabledBefore
end
end
def text(str)
end
end
Version data entries
229 entries across 229 versions & 3 rubygems