+def _decode_headers_params(msg, header, decode_all_params, param_list):
+ if decode_all_params:
+ params = msg.get_params(header=header)
+ if params:
+ for param, value in params:
+ if param not in param_list:
+ decode_header_param(msg, header, param)
+ else:
+ for param in param_list:
+ decode_header_param(msg, header, param)
+
+def _remove_headers_params(msg, header, remove_all_params, param_list):
+ if remove_all_params:
+ params = msg.get_params(header=header)
+ if params:
+ if param_list:
+ for param, value in params:
+ if param not in param_list:
+ msg.del_param(param, header)
+ else:
+ value = msg[header]
+ if value is None: # No such header
+ return
+ if ';' not in value: # There are no parameters
+ return
+ del msg[header] # Delete all such headers
+ # Get the value without parameters and set it back
+ msg[header] = value.split(';')[0].strip()
+ else:
+ for param in param_list:
+ msg.del_param(param, header)
+