From 995686b5ff272fb1fe0e78c087d6855ea93ae85e Mon Sep 17 00:00:00 2001
From: Zaran <zaran.krleza@gmail.com>
Date: Sat, 29 Jan 2011 23:59:55 +0100
Subject: Retrieve both the key and perm at the same time for performance
 reason. Also make the key a subitem (instead of an attribute) of the result
 stanza.

---
 server/object.py | 68 +++++++++++++++++++++++++++++---------------------------
 1 file changed, 35 insertions(+), 33 deletions(-)

(limited to 'server/object.py')

diff --git a/server/object.py b/server/object.py
index 541fa95..6723481 100644
--- a/server/object.py
+++ b/server/object.py
@@ -34,26 +34,29 @@ class Object:
             raise ObjectError
 
     def get_permission(self, user):
-        file = open(self.path + 'permissions', 'r')
-        for line in file:
-            name, perm, key = line.split()
-            if name == user:
-                return int(perm)
+        with open(self.path + 'permissions', 'r') as file:
+            for line in file:
+                name, perm, key = line.split()
+                if name == user:
+                    return int(perm)
+            return None
 
-        return 0
-    
     def get_key(self, user):
-        file = open(self.path + 'permissions', 'r')
-        for line in file:
-            name, perm, key = line.split()
-            if name == user:
-                if not int(perm) & READ:
-                    logging.error("User {} doesn't have read access to object {}"
-                          .format(user, self.hash))
-                    raise PermissionError
-                return key
-        return 0
-    
+        with open(self.path + 'permissions', 'r') as file:
+            for line in file:
+                name, perm, key = line.split()
+                if name == user:
+                    return key
+            return None
+
+    def get_permission_key(self, user):
+        with open(self.path + 'permissions', 'r') as file:
+            for line in file:
+                name, perm, key = line.split()
+                if name == user:
+                    return (int(perm), key)
+            return (None, None)
+
     def get_child_list(self, user):
         perm = self.get_permission(user)
         if not perm & LIST:
@@ -64,32 +67,31 @@ class Object:
         file = open(self.path + "childs", 'r')
         result = []
         for line in file:
-                name = line.rstrip('\n')
-                try:
-                    child = Object(self.owner, name)
-                except ObjectError:
-                    logging.error("Object {} can't be find for user {}".format(self.hash,
-                                                                               self.owner))
-                else:
-                    permission = child.get_permission(user)
-                    key = child.get_key(user)
-                    if permission > 0:
-                        result.append((name, permission, key))
+            name = line.rstrip('\n')
+            try:
+                child = Object(self.owner, name)
+            except ObjectError:
+                logging.error("Object {} can't be find for user {}".format(self.hash,
+                                                                           self.owner))
+            else:
+                perm, key = child.get_permission_key(user)
+                if perm > 0:
+                    result.append((name, perm, key))
 
         file.close()
         return result
 
     def get_content(self, user):
-        perm = self.get_permission(user)
-        if not perm & READ:
+        perm, key = self.get_permission_key(user)
+        if not perm & READ :
             logging.error("User {} doesn't have read access to object {}"
                           .format(user, self.hash))
             raise PermissionError
 
         file = open(self.path + "object", 'r')
-        result = file.read()
+        content = file.read()
         file.close()
-        return result
+        return content, key
 
 if __name__ == '__main__':
     pass
-- 
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