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# SOAP4R - SOAP XML Instance Parser library.
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# Copyright (C) 2001, 2003 NAKAMURA, Hiroshi <nahi@ruby-lang.org>.
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# This program is copyrighted free software by NAKAMURA, Hiroshi. You can
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# redistribute it and/or modify it under the same terms of Ruby's license;
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# either the dual license version in 2003, or any later version.
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require 'xsd/xmlparser'
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require 'soap/baseData'
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require 'soap/encodingstyle/handler'
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class ParseError < Error; end
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class FormatDecodeError < ParseError; end
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class UnexpectedElementError < ParseError; end
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attr_reader :ns, :encodingstyle
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def replace_node(node)
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def initialize(ns, name, node, encodingstyle)
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@encodingstyle = encodingstyle
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@node = NodeContainer.new(node)
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attr_accessor :envelopenamespace
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attr_accessor :default_encodingstyle
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attr_accessor :decode_typemap
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attr_accessor :allow_unqualified_element
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def initialize(opt = {})
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@parser = XSD::XMLParser.create_parser(self, opt)
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@envelopenamespace = opt[:envelopenamespace] || EnvelopeNamespace
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@default_encodingstyle = opt[:default_encodingstyle] || EncodingNamespace
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@decode_typemap = opt[:decode_typemap] || nil
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@allow_unqualified_element = opt[:allow_unqualified_element] || false
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def parse(string_or_readable)
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@handlers.each do |uri, handler|
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handler.decode_prologue
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@parser.do_parse(string_or_readable)
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unless @parsestack.empty?
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raise FormatDecodeError.new("Unbalanced tag in XML.")
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@handlers.each do |uri, handler|
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handler.decode_epilogue
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def start_element(name, attrs)
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lastframe = @parsestack.last
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ns = parent = parent_encodingstyle = nil
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ns = lastframe.ns.clone_ns
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parent = lastframe.node
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parent_encodingstyle = lastframe.encodingstyle
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parent = ParseFrame::NodeContainer.new(nil)
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parent_encodingstyle = nil
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attrs = XSD::XMLParser.filter_ns(ns, attrs)
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encodingstyle = find_encodingstyle(ns, attrs)
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# Children's encodingstyle is derived from its parent.
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if encodingstyle.nil?
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if parent.node.is_a?(SOAPHeader)
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encodingstyle = LiteralNamespace
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encodingstyle = parent_encodingstyle || @default_encodingstyle
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node = decode_tag(ns, name, attrs, parent, encodingstyle)
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@parsestack << ParseFrame.new(ns, name, node, encodingstyle)
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lastframe = @parsestack.last
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# Need not to be cloned because character does not have attr.
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decode_text(lastframe.ns, text, lastframe.encodingstyle)
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# Ignore Text outside of SOAP Envelope.
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def end_element(name)
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lastframe = @parsestack.pop
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unless name == lastframe.name
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raise UnexpectedElementError.new("Closing element name '#{ name }' does not match with opening element '#{ lastframe.name }'.")
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decode_tag_end(lastframe.ns, lastframe.node, lastframe.encodingstyle)
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@lastnode = lastframe.node.node
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def find_encodingstyle(ns, attrs)
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attrs.each do |key, value|
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if (ns.compare(@envelopenamespace, AttrEncodingStyle, key))
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def decode_tag(ns, name, attrs, parent, encodingstyle)
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# Envelope based parsing.
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if ((ele.namespace == @envelopenamespace) ||
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(@allow_unqualified_element && ele.namespace.nil?))
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o = decode_soap_envelope(ns, ele, attrs, parent)
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# Encoding based parsing.
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handler = find_handler(encodingstyle)
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return handler.decode_tag(ns, ele, attrs, parent)
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raise FormatDecodeError.new("Unknown encodingStyle: #{ encodingstyle }.")
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def decode_tag_end(ns, node, encodingstyle)
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return unless encodingstyle
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handler = find_handler(encodingstyle)
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return handler.decode_tag_end(ns, node)
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raise FormatDecodeError.new("Unknown encodingStyle: #{ encodingstyle }.")
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def decode_text(ns, text, encodingstyle)
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handler = find_handler(encodingstyle)
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handler.decode_text(ns, text)
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def decode_soap_envelope(ns, ele, attrs, parent)
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if ele.name == EleEnvelope
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if ext = @opt[:external_content]
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o.external_content[k] = v
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elsif ele.name == EleHeader
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unless parent.node.is_a?(SOAPEnvelope)
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raise FormatDecodeError.new("Header should be a child of Envelope.")
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parent.node.header = o
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elsif ele.name == EleBody
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unless parent.node.is_a?(SOAPEnvelope)
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raise FormatDecodeError.new("Body should be a child of Envelope.")
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elsif ele.name == EleFault
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unless parent.node.is_a?(SOAPBody)
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raise FormatDecodeError.new("Fault should be a child of Body.")
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parent.node.fault = o
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def find_handler(encodingstyle)
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unless @handlers.key?(encodingstyle)
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handler_factory = SOAP::EncodingStyle::Handler.handler(encodingstyle) ||
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SOAP::EncodingStyle::Handler.handler(EncodingNamespace)
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handler = handler_factory.new(@parser.charset)
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handler.decode_typemap = @decode_typemap
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handler.decode_prologue
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@handlers[encodingstyle] = handler
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@handlers[encodingstyle]