# -*- coding: utf-8 -*-
#
# This file is a part of Fedora-tour http://fedoraproject.org/wiki/Fedora-tour
#
# Copyright (c) 2009 Ryan Rix and Ankur Sinha
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#

import io
import os.path
import xml.parsers.expat
import sys

class MenuNode:
	parent = 0

class MenuObject:
	isValid = True
	currenElement = False
	rootNode = False
	activeNode = False
	
	Icon = False
	DocRoot = False
	Locale = False
	Priority = False
	
	def __init__(self,package):
		if not os.path.isfile(package):
			self.isValid = False
			return None
			
		self.parser = xml.parsers.expat.ParserCreate()
		self.parser.CharacterDataHandler = self.parserCharData
		self.parser.StartElementHandler = self.parserStartElement
		self.parser.EndElementHandler = self.parserEndElement
		
		self.parser.ParseFile(open(package,"r"))
	
	def addNode(self,parent,nodeType):
		node = MenuNode()
		
		node.nodes = list()
		node.parent = False
		node.nodeType = nodeType
		
		if parent != False:
			node.parent = parent
			parent.nodes.append(node)
		
		return node
	
	def parserCharData(self, data):
		if self.currenElement == False:
			pass
		
		elif self.currentElement == "DisplayName":
			self.activeNode.displayName = data
		
		elif self.currentElement == "Icon":
			self.activeNode.icon = findIcon(data)
		
		elif self.currentElement == "DocRoot":
			self.activeNode.
			
	def parserStartElement(self, name, attrs):
		print "Encountered "+name+" node Start"
		
		self.currentElement = name
		
		if name == "Package":
			self.rootNode = self.addNode(False,"Package")
			self.activeNode = self.rootNode
		
		elif name == "Page":
			self.activeNode = self.addNode(self.activeNode, "Page")
		
		elif name == "DisplayName":
			self.currentElement = "DisplayName"
		
		elif name == "Icon" or name == "DocRoot" or name == "Locale" or name == "Priority":
			""" 
			These tags are only allowed under root, so we should err if this happens.
			"""
			if self.activeNode.parent != False:
				print self.rootNode
				print self.activeNode
				print "<"+name+"> node is only allowed underneath the <Package> Node. Please file a bug on the Fedora-tour Fedora component at http://bugzilla.redhat.com"
				sys.exit()
		
	def parserEndElement(self, name):
		print "Encountered "+name+" node End"
		
		self.currentElement == False
		
		if name == "Page":
			self.activeNode = self.activeNode.parent
		
print MenuObject("../data/package.xml").isValid