* posixpath.py: Fix border cases in normpath ('/foo/..' should return '/')

gvanrossum · gvanrossum · commit df5638662d95 · 1993-07-06T15:19:36.000Z
* ftplib.py: made cwd() use 'CDUP' when dirname is '..'
* FL.py: added new constant FL_PLACE_FULLSCREEN
diff --git a/Lib/ftplib.py b/Lib/ftplib.py
@@ -336,7 +336,11 @@ def rename(self, fromname, toname):
 
 	# Change to a directory
 	def cwd(self, dirname):
-		self.voidcmd('CWD ' + dirname)
+		if dirname == '..':
+			cmd = 'CDUP'
+		else:
+			cmd = 'CWD ' + dirname
+		self.voidcmd(cmd)
 
 	# Retrieve the size of a file
 	def size(self, filename):
diff --git a/Lib/irix5/FL.py b/Lib/irix5/FL.py
@@ -27,6 +27,7 @@
 PLACE_MOUSE = 3
 PLACE_CENTER = 4
 PLACE_POSITION = 5
+FL_PLACE_FULLSCREEN = 6
 FIND_INPUT = 0
 FIND_AUTOMATIC = 1
 FIND_MOUSE = 2
diff --git a/Lib/plat-irix5/FL.py b/Lib/plat-irix5/FL.py
@@ -27,6 +27,7 @@
 PLACE_MOUSE = 3
 PLACE_CENTER = 4
 PLACE_POSITION = 5
+FL_PLACE_FULLSCREEN = 6
 FIND_INPUT = 0
 FIND_AUTOMATIC = 1
 FIND_MOUSE = 2
diff --git a/Lib/posixpath.py b/Lib/posixpath.py
@@ -270,10 +270,12 @@ def expandvars(path):
 
 def normpath(path):
 	import string
+	# Treat initial slashes specially
+	slashes = ''
+	while path[:1] == '/':
+		slashes = slashes + '/'
+		path = path[1:]
 	comps = string.splitfields(path, '/')
-	# If the path begins with '/', comps[0] is '', which we leave alone;
-	# we also leave leading multiple slashes alone for compatibility
-	# with certain networking naming schemes using //host/path
 	i = 0
 	while i < len(comps):
 		if comps[i] == '.':
@@ -287,6 +289,6 @@ def normpath(path):
 		else:
 			i = i+1
 	# If the path is now empty, substitute '.'
-	if not comps:
+	if not comps and not slashes:
 		comps.append('.')
-	return string.joinfields(comps, '/')
+	return slashes + string.joinfields(comps, '/')
