1 files changed, 122 insertions, 0 deletions
diff --git a/misc/pylib/robofab/tools/rfPrefs.py b/misc/pylib/robofab/tools/rfPrefs.py
new file mode 100755
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+++ b/misc/pylib/robofab/tools/rfPrefs.py
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+"""A simple module for dealing with preferences that are used by scripts. Based almost entirely on MacPrefs.
+
+To save some preferences:
+myPrefs = RFPrefs(drive/directory/directory/myPrefs.plist)
+myPrefs.myString = 'xyz'
+myPrefs.myInteger = 1234
+myPrefs.myList = ['a', 'b', 'c']
+myPrefs.myDict = {'a':1, 'b':2}
+myPrefs.save()
+
+To retrieve some preferences:
+myPrefs = RFPrefs(drive/directory/directory/myPrefs.plist)
+myString = myPrefs.myString
+myInteger = myPrefs.myInteger
+myList = myPrefs.myList
+myDict = myPrefs.myDict
+
+When using this module within FontLab, it is not necessary to
+provide the RFPrefs class with a path. If a path is not given,
+it will look for a file in FontLab/RoboFab Data/RFPrefs.plist.
+If that file does not exist, it will make it.
+"""
+
+from robofab import RoboFabError
+from robofab.plistlib import Plist
+from cStringIO import StringIO
+import os
+
+class _PrefObject:
+	
+	def __init__(self, dict=None):
+		if not dict:
+			self._prefs = {}
+		else:
+			self._prefs = dict
+	
+	def __len__(self):
+		return len(self._prefs)
+	
+	def __delattr__(self, attr):
+		if self._prefs.has_key(attr):
+			del self._prefs[attr]
+		else:
+			raise AttributeError, 'delete non-existing instance attribute'
+	
+	def __getattr__(self, attr):
+		if attr == '__members__':
+			keys = self._prefs.keys()
+			keys.sort()
+			return keys
+		try:
+			return self._prefs[attr]
+		except KeyError:
+			raise AttributeError, attr
+
+	def __setattr__(self, attr, value):
+		if attr[0] != '_':
+			self._prefs[attr] = value
+		else:
+			self.__dict__[attr] = value
+			
+	def asDict(self):
+		return self._prefs
+
+class RFPrefs(_PrefObject):
+	
+	"""The main preferences object to call"""
+	
+	def __init__(self, path=None):
+		from robofab.world import world
+		self.__path = path
+		self._prefs = {}
+		if world.inFontLab:
+			#we don't have a path, but we know where we can put it
+			if not path:
+				from robofab.tools.toolsFL import makeDataFolder
+				settingsPath = makeDataFolder()
+				path = os.path.join(settingsPath, 'RFPrefs.plist')
+				self.__path = path
+				self._makePrefsFile()
+			#we do have a path, make sure it exists and load it
+			else:
+				self._makePrefsFile()
+		else:
+			#no path, raise error
+			if not path:
+				raise RoboFabError, "no preferences path defined"
+			#we do have a path, make sure it exists and load it
+			else:
+				self._makePrefsFile()
+		self._prefs = Plist.fromFile(path)
+			
+	def _makePrefsFile(self):
+		if not os.path.exists(self.__path):
+			self.save()
+	
+	def __getattr__(self, attr):
+		if attr[0] == '__members__':
+			keys = self._prefs.keys()
+			keys.sort()
+			return keys
+		try:
+			return self._prefs[attr]
+		except KeyError:
+			raise AttributeError, attr
+			#if attr[0] != '_':
+			#	self._prefs[attr] = _PrefObject()
+			#	return self._prefs[attr]
+			#else:
+			#	raise AttributeError, attr
+			
+	def save(self):
+		"""save the plist file"""
+		f = StringIO()
+		pl = Plist()
+		for i in self._prefs.keys():
+			pl[i] = self._prefs[i]
+		pl.write(f)
+		data = f.getvalue()
+		f = open(self.__path, 'wb')
+		f.write(data)
+		f.close()