Initial Commit

gxg/deps/rexml/parsers/streamparser.rb

@@ -0,0 +1,61 @@
+# frozen_string_literal: false
+require "deps/rexml/parsers/baseparser"
+
+module REXML
+  module Parsers
+    class StreamParser
+      def initialize source, listener
+        @listener = listener
+        @parser = BaseParser.new( source )
+        @tag_stack = []
+      end
+
+      def add_listener( listener )
+        @parser.add_listener( listener )
+      end
+
+      def parse
+        # entity string
+        while true
+          event = @parser.pull
+          case event[0]
+          when :end_document
+            unless @tag_stack.empty?
+              tag_path = "/" + @tag_stack.join("/")
+              raise ParseException.new("Missing end tag for '#{tag_path}'",
+                                       @parser.source)
+            end
+            return
+          when :start_element
+            @tag_stack << event[1]
+            attrs = event[2].each do |n, v|
+              event[2][n] = @parser.unnormalize( v )
+            end
+            @listener.tag_start( event[1], attrs )
+          when :end_element
+            @listener.tag_end( event[1] )
+            @tag_stack.pop
+          when :text
+            normalized = @parser.unnormalize( event[1] )
+            @listener.text( normalized )
+          when :processing_instruction
+            @listener.instruction( *event[1,2] )
+          when :start_doctype
+            @listener.doctype( *event[1..-1] )
+          when :end_doctype
+            # FIXME: remove this condition for milestone:3.2
+            @listener.doctype_end if @listener.respond_to? :doctype_end
+          when :comment, :attlistdecl, :cdata, :xmldecl, :elementdecl
+            @listener.send( event[0].to_s, *event[1..-1] )
+          when :entitydecl, :notationdecl
+            @listener.send( event[0].to_s, event[1..-1] )
+          when :externalentity
+            entity_reference = event[1]
+            content = entity_reference.gsub(/\A%|;\z/, "")
+            @listener.entity(content)
+          end
+        end
+      end
+    end
+  end
+end