+module Main
+where
+
import Control.Concurrent.ParallelIO.Global (
parallel,
stopGlobalPool )
import Data.String.Utils (splitWs)
import System.Exit (ExitCode(..), exitSuccess, exitWith)
import System.IO (stderr, hPutStrLn)
-
-import Cidr (Cidr(..),
- cidr_from_string,
- combine_all,
- enumerate,
- max_octet1,
- max_octet2,
- max_octet3,
- max_octet4,
- min_octet1,
- min_octet2,
- min_octet3,
- min_octet4 )
-
-import CommandLine (help_set,
- help_text,
- input_function,
- Mode(..),
- parse_errors,
- parse_mode)
-
+import Text.Read (readMaybe)
+
+import Cidr (
+ Cidr(..),
+ combine_all,
+ enumerate,
+ max_octet1,
+ max_octet2,
+ max_octet3,
+ max_octet4,
+ min_octet1,
+ min_octet2,
+ min_octet3,
+ min_octet4 )
+import CommandLine (
+ help_set,
+ help_text,
+ input_function,
+ Mode(..),
+ parse_errors,
+ parse_mode )
import DNS (Domain, lookup_ptrs)
import ExitCodes ( exit_args_parse_failed, exit_invalid_cidr )
import Octet ()
input <- inputfunc
let cidr_strings = splitWs input
- let cidrs = map cidr_from_string cidr_strings
+ let cidrs = map readMaybe cidr_strings
when (any isNothing cidrs) $ do
putStrLn "Error: not valid CIDR notation."