1 files changed, 124 insertions, 0 deletions
diff --git a/src/wii/filesystem.py b/src/wii/filesystem.py
new file mode 100644
index 0000000..b6b8103
--- /dev/null
+++ b/src/wii/filesystem.py
@@ -0,0 +1,124 @@
+import weakref
+
+class WiiFSObject(object):
+	def __init__(self):
+		self._parent_ref = None
+		self._name = ''
+		self._low_name = ''
+	
+	@property
+	def parent(self):
+		ref = self._parent_ref
+		return (ref() if ref else None)
+
+	@parent.setter
+	def parent(self, value):
+		self._parent_ref = weakref.ref(value)
+	
+	@parent.deleter
+	def parent(self):
+		self._parent_ref = None
+	
+
+	@property
+	def name(self):
+		return self._name
+
+	@name.setter
+	def name(self, value):
+		self._name = value
+		self._low_name = value.lower()
+
+	
+	def unlinkFromParent(self):
+		if self.parent == None:
+			return
+
+		if self.parent.isDirectory():
+			self.parent.children.remove(self)
+
+		del self.parent
+
+	def isFile(self): return False
+	def isDirectory(self): return False
+
+
+class WiiFile(WiiFSObject):
+	def __init__(self):
+		WiiFSObject.__init__(self)
+		self.data = None
+	
+	def isFile(self): return True
+
+
+class WiiDirectory(WiiFSObject):
+	def __init__(self):
+		WiiFSObject.__init__(self)
+		self.children = []
+	
+	def isDirectory(self): return True
+
+	def findByName(self, name, recursive):
+		return self._findByName(name.lower(), recursive)
+
+	def _findByName(self, lowercase_name, recursive):
+		for obj in self.children:
+			if obj._low_name == lowercase_name:
+				return obj
+
+			if recursive and obj.isDirectory():
+				tryThis = obj._findByName(lowercase_name, recursive)
+				if tryThis:
+					return tryThis
+
+		return None
+
+	def resolvePath(self, path):
+		components = path.split('/')
+		currentDir = self
+
+		# special case: handle absolute paths
+		if components[0] == '':
+			while currentDir.parent:
+				currentDir = currentDir.parent
+
+			del components[0]
+
+		while len(components) > 0:
+			bit = components.pop(0)
+			nextObj = None
+
+			if bit == '.':
+				nextObj = currentDir
+			elif bit == '..':
+				nextObj = currentDir.parent
+			else:
+				nextObj = currentDir.findByName(bit, False)
+
+			if nextObj is None:
+				print("failed to resolve path %s: missing component %s" % (path, bit))
+				return None
+
+			if len(components) == 0:
+				return nextObj
+
+			if not nextObj.isDirectory():
+				print("failed to resolve path %s: component %s is not a directory" % (path, bit))
+				return None
+
+			# has to be a directory so just continue
+			currentDir = nextObj
+
+		print("wtf? %s" % path)
+		return None
+
+	def addChild(self, obj):
+		if self.findByName(obj.name, False):
+			return False
+
+		obj.unlinkFromParent()
+		self.children.append(obj)
+		obj.parent = self
+
+		return True
+