--no commit message

fs/multifs.py

+#!/usr/bin/env python
+
+from fs import FS
+
+class MultiFS(FS):
+    
+    def __init__(self):
+        FS.__init__(self)
+        
+        self.fs_sequence = []
+        self.fs_lookup =  {}
+        
+
+    def add_fs(self, name, fs):
+                
+        self.fs_sequence.append(name, fs)
+        self.fs_lookup[name] = fs
+        
+        
+    def remove_fs(self, name):
+        
+        fs = self.fs_lookup[name]
+        self.fs_sequence.remove(fs)
+        del self.fs_lookup[name]
+        
+        
+        
+    def __getitem__(self, name):
+        
+        return self.fs_lookup[name]
+    
+    def __iter__(self):
+        
+        return iter(self.fs_sequence)
+    
+    def _delegate_search(self, path):
+        
+        for fs in self:
+            if self.exists(path):
+                return fs
+        return None
+    
+    def exists(self, path):
+        
+        return self._delegate_search(path) is not None
+            
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