150 lines
3.3 KiB
Ruby
150 lines
3.3 KiB
Ruby
# WSDL4R - WSDL XML Instance parser library.
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# Copyright (C) 2002, 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/qname'
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require 'xsd/ns'
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require 'xsd/charset'
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require 'xsd/datatypes'
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require 'xsd/xmlparser'
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require 'wsdl/xmlSchema/data'
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module WSDL
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module XMLSchema
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class Parser
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include XSD
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class ParseError < Error; end
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class FormatDecodeError < ParseError; end
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class UnknownElementError < FormatDecodeError; end
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class UnknownAttributeError < FormatDecodeError; end
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class UnexpectedElementError < FormatDecodeError; end
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class ElementConstraintError < FormatDecodeError; end
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class AttributeConstraintError < FormatDecodeError; end
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private
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class ParseFrame
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attr_reader :ns
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attr_reader :name
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attr_accessor :node
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private
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def initialize(ns, name, node)
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@ns = ns
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@name = name
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@node = node
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end
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end
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public
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def initialize(opt = {})
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@parser = XSD::XMLParser.create_parser(self, opt)
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@parsestack = nil
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@lastnode = nil
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end
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def parse(string_or_readable)
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@parsestack = []
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@lastnode = nil
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@textbuf = ''
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@parser.do_parse(string_or_readable)
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@lastnode
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end
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def charset
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@parser.charset
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end
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def start_element(name, attrs)
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lastframe = @parsestack.last
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ns = parent = nil
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if lastframe
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ns = lastframe.ns.clone_ns
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parent = lastframe.node
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else
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ns = XSD::NS.new
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parent = nil
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end
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attrs = XSD::XMLParser.filter_ns(ns, attrs)
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node = decode_tag(ns, name, attrs, parent)
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@parsestack << ParseFrame.new(ns, name, node)
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end
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def characters(text)
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lastframe = @parsestack.last
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if lastframe
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# Need not to be cloned because character does not have attr.
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ns = lastframe.ns
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decode_text(ns, text)
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else
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p text if $DEBUG
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end
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end
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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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end
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decode_tag_end(lastframe.ns, lastframe.node)
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@lastnode = lastframe.node
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end
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private
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def decode_tag(ns, name, attrs, parent)
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o = nil
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element = ns.parse(name)
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if !parent
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if element == SchemaName
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o = Schema.parse_element(element)
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else
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raise UnknownElementError.new("Unknown element #{ element }.")
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end
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else
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o = parent.parse_element(element)
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unless o
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STDERR.puts("Unknown element #{ element }.")
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o = Documentation.new # which accepts any element.
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end
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# node could be a pseudo element. pseudo element has its own parent.
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o.parent = parent if o.parent.nil?
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end
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attrs.each do |key, value|
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attr_ele = ns.parse(key, true)
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value_ele = ns.parse(value, true)
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value_ele.source = value # for recovery; value may not be a QName
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if attr_ele == IdAttrName
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o.id = value_ele
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else
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unless o.parse_attr(attr_ele, value_ele)
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STDERR.puts("Unknown attr #{ attr_ele }.")
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end
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end
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end
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o
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end
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def decode_tag_end(ns, node)
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node.parse_epilogue
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end
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def decode_text(ns, text)
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@textbuf << text
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end
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end
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end
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end
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