Add convenience functions to fs.

vispa/remote/filesystem.py

@@ -263,27 +263,27 @@ class FileSystem(object):
             if cut:
                 os.remove(target)
 
-
     def save_file_content(self, path, content, force=True):
-        #check if file already exists
+        path = os.path.expandvars(os.path.expanduser(path))
+        # check if file already exists
         if os.path.exists(path) and not force:
-            return False, "The file '%s' already exists!" % path
-
-        out = open(path, "w")
-        for line in content.data:
-            out.write(line)
+            return False
+        out = open(path, "wb")
+        out.write(content)
         out.close()
-
-        return True, "File saved!"
+        return True
 
     def get_file_content(self, path):
+        path = os.path.expandvars(os.path.expanduser(path))
         f = open(path, "r")
         content = f.read()
         f.close()
-        if content == '':
-            content = ' '
         return content
 
+    def get_mtime(self, path):
+        path = os.path.expandvars(os.path.expanduser(path))
+        return os.path.getmtime(path)
+
     def is_browser_file(self, path):
         extension = path.split(".")[-1]
         return extension in FileSystem.BROWSER_EXTENSIONS