--- ExtFile.py.orig	Fri Nov 30 00:25:32 2001
+++ ExtFile.py	Thu Jan 10 23:18:20 2002
@@ -60,8 +60,7 @@
 from DateTime import DateTime
 import urllib, os, types, string
 from os.path import join, isfile
-try: from cStringIO import StringIO
-except: from StringIO import StringIO
+import tempfile
 
 FLAT = 0
 SYNC_ZODB = 1
@@ -226,8 +225,7 @@
 		if (preview and not has_preview): icon = 1
 		
 		if icon:
-			filename = join(SOFTWARE_HOME, 'Products', 
-			                'ExtFile', self.getIconPath())
+			filename = join(Globals.package_home(globals()), self.getIconPath())
 			content_type = 'image/gif'
 		elif preview:
 			filename = self._get_filename(self.prev_filename)
@@ -241,13 +239,12 @@
 		if isfile(filename):
 			size = os.stat(filename)[6] # file size
 		else:
-			filename = join(SOFTWARE_HOME, 'Products',
-			              'ExtFile', 'icons', 'broken.gif')
+			filename = join(Globals.package_home(globals()), 'icons', 'broken.gif')
 			try: size = os.stat(filename)[6]
 			except: raise cant_read_exc, ("%s (%s)" %(self.id, filename))
 			content_type = 'image/gif'
 			icon = 1
-		data = StringIO()
+		data = tempfile.TemporaryFile()
 		if icon==0 and width is not None and height is not None:
 			try:
 				from PIL import Image
@@ -270,7 +267,17 @@
 			REQUEST.RESPONSE.setHeader('Last-Modified', last_mod)
 			REQUEST.RESPONSE.setHeader('Content-Type', content_type)
 			REQUEST.RESPONSE.setHeader('Content-Length', size)
-		return data.getvalue()
+		chunk = 1 << 18
+		data.seek(0)
+		if REQUEST is not None:
+			while 1:
+				buffer = data.read(chunk)
+				REQUEST.RESPONSE.write(buffer)
+				if len(buffer) < chunk:
+					break
+			return ''
+		else:
+			return data.read()
 	
 	def view_image_or_file(self):
 		""" The default view of the contents of the File or Image. """
@@ -408,7 +415,12 @@
 		self.dav__init(REQUEST, RESPONSE)
 		content_type = REQUEST.get_header('content-type', None)
 		instream = REQUEST['BODYFILE']
-		new_fn = self._get_ufn(self.filename)
+		# XXX: creating the disk file will fail without a proper 
+		#      path. however, absolute_url() does not work here,
+		#      as we are not yet seated. as a workaround we 
+		#      introduce the path parameter to pass the location 
+		#      explicitly. also see the _get_new_ufn() method.
+		new_fn = self._get_ufn(self.filename, path=REQUEST.steps[:-2])
 		self._copy(instream, self._get_filename(new_fn))
 		try:
 			self.content_type = self._get_content_type(instream, 
@@ -537,12 +549,12 @@
 			path = join(path,filename)
 		return path
 	
-	def _get_ufn(self, filename):
+	def _get_ufn(self, filename, path=None):
 		""" If no unique filename has been generated, generate one
 		    otherwise, return the existing one.
 		"""
 		if UNDO_POLICY==ALWAYS_BACKUP or filename==[]: 
-			new_fn = self._get_new_ufn()
+			new_fn = self._get_new_ufn(path=path)
 		else: 
 			new_fn = filename[:]
 		if filename:
@@ -555,9 +567,14 @@
 				except: pass
 		return new_fn
 	
-	def _get_new_ufn(self):
+	def _get_new_ufn(self, path=None):
 		""" Create a new unique filename """
-		rel_url_list = string.split(self.absolute_url(1), '/')[:-1]
+		# XXX: absolute_url() does not work inside a PUT factory
+		#      so we pass in the path. also see the PUT() method.
+		if path is not None:
+			rel_url_list = path
+		else:
+			rel_url_list = string.split(self.absolute_url(1), '/')[:-1]
 		rel_url_list = filter(None, rel_url_list)
 		pos = string.rfind(self.id, '.')
 		if (pos+1):
--- ExtImage.py.orig	Thu Jan 10 20:54:00 2002
+++ ExtImage.py	Thu Jan 10 23:17:24 2002
@@ -361,7 +361,7 @@
 		RESPONSE = ExtImage.inheritedAttribute("PUT")(self,REQUEST, RESPONSE)
 		if self.has_preview:
 			width, height = self._getImageSize(self.prev_filename)
-			prev_filename = self._get_ufn()
+			prev_filename = self._get_ufn(path=REQUEST.steps[:-2])
 			self._createPreview(self.filename, prev_filename, 
 			                    width, height, 0)
 		return RESPONSE
@@ -433,12 +433,12 @@
 				os.rename(fn+'.undo', fn)			# rename preview
 		return ExtImage.inheritedAttribute("_undo")(self)
 	
-	def _get_ufn(self, filename=None):
+	def _get_ufn(self, filename=None, path=None):
 		""" If no unique filename has been generated, generate one
 		    otherwise, return the existing one.
 		"""
 		if filename is not None:
-			return ExtImage.inheritedAttribute("_get_ufn") (self, filename)
+			return ExtImage.inheritedAttribute("_get_ufn") (self, filename, path=path)
 		new_fn = ''
 		if self.filename:
 			test_fn = self._get_filename(self.filename) + '.preview'
@@ -446,7 +446,7 @@
 				new_fn = self.filename[:]
 		if not new_fn:
 			new_fn = ExtImage.inheritedAttribute("_get_ufn") (self, 
-			                                      self.prev_filename)
+			                                      self.prev_filename, path=path)
 		if new_fn != self.prev_filename:
 			new_fn[-1] = new_fn[-1] + '.preview'
 		return new_fn