#:include: ../shared/license.rdoc

class NTriple ; end

class NTripleFile < NTriple
	attr_reader :line
	def line=(_line)
		@line=_line
		@about_uri=@predicat_uri=@value_uri=@value_litteral=nil
		@split=@line.split(" ",3)
	end

	def about_uri
		@about_uri=urialias(@split[0]) if !@about_uri
		return @about_uri
	end
	def predicat_uri
		@predicat_uri=urialias(@split[1]) if !@predicat_uri
		return @predicat_uri
	end
	def value_uri
		@value_uri=urialias(@split[2]) if ! @value_uri
		return @value_uri
	end
	def value_litteral
		@value_litteral=@split[2][1,@split[2].length-5] if !@value_literral
		return @value_litteral
	end
	
	def valueIsReference?
		case @split[2][0]
			when 60 then return true
			when 34 then return false
			else raise Warning.new,"Bad ntriple detected"
		end
	end

	COMMENT_SIGNATURE="#"[0]
	def isComment?
		return	@line[0]==COMMENT_SIGNATURE
	end
	

	def isOntoMDXHeader?
		return @line.to_s=="#!ontomdx\n"
	end
end

module Mrdf_Model 
	def loadMetaModelFromFile(fileName,ignoreHeader=false)
		@updateCount=@updateCount+1
		raise Exception.new("nil fileName passed to loadMetaModelFromFile") if fileName.nil? 
		m=fileName+".rb"
		#log.debug "m=#{m}"
		if( File.exists?(m) && File.mtime(m) > File.mtime(fileName) )
			log.debug "Using cache in #{m}"
			require(m)
			loadModelFromFile(fileName,ignoreHeader)
		else
			log.debug "Generating cache in #{m}"
			loadModelFromFile(fileName,ignoreHeader)
			self.generateClassesFromMetamodel(m)
		end
	end

	def loadModelFromFile (srcFileName,ignoreHeader=false)
		fileName=translateToNt(srcFileName)
		@updateCount=@updateCount+1
		#Crdf_Resource.new(self,"xx").initUpdate
		[false,true].each { |modeData|
			begin 
			File.open(fileName,"r") { |aFile|
					parseModelStream(aFile,modeData,ignoreHeader)
					}
			rescue Exception => e 
					raise Exception.new(e.message+"ERROR *** current file is: \"#{fileName}\"\nERROR ***\n")
			end
		}
	end

	def parseModelStream(stream,modeData,ignoreHeader=false)
		aFile=stream
		i=0
		nt=NTripleFile.new()
		aFile.each_line {
			|nt.line|  
			begin	
			i=i+1

			if(!ignoreHeader)
				ignoreHeader=true
				next if nt.isOntoMDXHeader?
				p="\nERROR *** "
				raise Exception.new("#{p}#{p}ontomdx was given a model file without#{p}a valid ontomdx plugin file header.#{p}If you have used a model file created by a modeler plugin,#{p}upgrade your plugin.#{p}Il you have used a plain RDF or RDFS file,#{p}specify ignoreHeader=true when loading model with loadModel.#{p}\n")
			end

			next if nt.isComment?
			parse(nt,modeData)
			rescue WarningRubyTypeUndefined => z
				log.error "WARNING ["+(modeData ? "data":"res")+" :nt.line "+i.to_s+", "+z.to_s+", Will create a default type. Possible discrepancies if defined later on. In case of problem, Consider bootstraping]:"+nt.line
				#log.debug "z.res=#{z.res}"
				z.res.createRubyClassMinimal(self)
				i=i-1
				retry

			rescue WarningURIundefined => z
				log.error "WARNING ["+(modeData ? "data":"res")+" :line "+i.to_s+", "+z.to_s+",Will create a default entry]:"+nt.line
				#log.debug "z.uri=#{z.uri}"
				Crdf_Resource.new(self,z.uri)
				#parse(nt.line,modeData)
				i=i-1
				retry
		        rescue Warning => w
				log.error "WARNING ["+(modeData ? "data":"res")+" :line "+i.to_s+", "+w.to_s+"]:"+nt.line

       			end
			}
	end

# moved to ontomde-redland-win
#	WIN_PATH_RAPPER=File.expand_path("#{File.dirname(__FILE__)}/../../dist/redland-1.0.3-Win32/rapper.exe").tr('/','\\\\')

	PLATFORM_IS_UNIX=!(RUBY_PLATFORM.index("inux").nil?)
	def rapperRun(param)
		if PLATFORM_IS_UNIX
			cmd="rapper "+param
		else
			cmd='"'+WIN_PATH_RAPPER+'"'+param
		end
		return if system(cmd)
		raise Exception.new("\n***\n***Error running command\n***\n***#{cmd}\n***\n")
		
	end
	def translateToNt(srcFileName)
		return srcFileName if ! (srcFileName=~/.rdfs*$/ )

		fileName="#{srcFileName}.cache.deleteMe.nt"
		if( File.exists?(fileName) && File.mtime(fileName) > File.mtime(srcFileName) )
			log.debug "INFO:Using cache in #{fileName}"
		else
			raise "Blanc dans nom de fichier non supportes sous windows" if fileName.include?(" ")
			if PLATFORM_IS_UNIX
				param=' -q -o ntriples -i rdfxml  '+srcFileName+' > '+fileName
			else
				param=' -q -o ntriples -i rdfxml  '+srcFileName.tr('/','\\\\')+' > '+fileName.tr('/','\\\\')+''
			end
			rapperRun(param)
		end
		return fileName
	end

	def translateToXML(srcFileName,fileName)
		raise "Blanc dans nom de fichier non supportes sous windows" if fileName.include?(" ") || srcFileName.include?(" ")
			if PLATFORM_IS_UNIX
			param=' -q -i ntriples -o rdfxml  '+srcFileName+' > '+fileName+''
		else
			param=' -q -i ntriples -o rdfxml  '+srcFileName.tr('/','\\\\')+' > '+fileName.tr('/','\\\\')+''
		end
		rapperRun(param)
		return fileName
	end

end