Initial revision

git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@3925 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 56 insertions, 0 deletions

diff --git a/lib/rexml/dtd/entitydecl.rb b/lib/rexml/dtd/entitydecl.rb
new file mode 100644
index 000000000..83156dfc7
--- /dev/null
+++ b/lib/rexml/dtd/entitydecl.rb
@@ -0,0 +1,56 @@
+require "rexml/child"
+module REXML
+	module DTD
+		class EntityDecl < Child
+			START = "<!ENTITY"
+			START_RE = /^\s*#{START}/um
+			PUBLIC = /^\s*#{START}\s+(?:%\s+)?(\w+)\s+PUBLIC\s+((["']).*?\3)\s+((["']).*?\5)\s*>/um
+			SYSTEM = /^\s*#{START}\s+(?:%\s+)?(\w+)\s+SYSTEM\s+((["']).*?\3)(?:\s+NDATA\s+\w+)?\s*>/um
+			PLAIN = /^\s*#{START}\s+(\w+)\s+((["']).*?\3)\s*>/um
+			PERCENT = /^\s*#{START}\s+%\s+(\w+)\s+((["']).*?\3)\s*>/um
+			# <!ENTITY name SYSTEM "...">
+			# <!ENTITY name "...">
+			def initialize src
+				super()
+				md = nil
+				if src.match( PUBLIC )
+					md = src.match( PUBLIC, true )
+					@middle = "PUBLIC"
+					@content = "#{md[2]} #{md[4]}"
+				elsif src.match( SYSTEM )
+					md = src.match( SYSTEM, true )
+					@middle = "SYSTEM"
+					@content = md[2]
+				elsif src.match( PLAIN )
+					md = src.match( PLAIN, true )
+					@middle = ""
+					@content = md[2]
+				elsif src.match( PERCENT )
+					md = src.match( PERCENT, true )
+					@middle = ""
+					@content = md[2]
+				end
+				raise ParseException.new("failed Entity match", src) if md.nil?
+				@name = md[1]
+			end
+
+			def to_s
+				rv = "<!ENTITY #@name "
+				rv << "#@middle " if @middle.size > 0
+				rv << @content
+				rv
+			end
+
+			def write( output, indent )
+				output << ('   '*indent) if indent > 0
+				output << to_s
+			end
+
+			def EntityDecl.parse_source source, listener
+				md = source.match( PATTERN_RE, true )
+				thing = md[0].squeeze " \t\n\r"
+				listener.send inspect.downcase, thing 
+			end
+		end
+	end
+end