import Data.Maybe (fromJust, isJust, isNothing)
import System.Console.GetOpt
+import System.Directory (doesFileExist)
import System.Environment (getArgs)
import Configuration (Cfg(..))
-- | A record containing values for all available options.
-data Options = Options { opt_heartbeat :: Maybe Int,
+data Options = Options { opt_consumer_key :: Maybe String,
+ opt_consumer_secret :: Maybe String,
+ opt_access_token :: Maybe String,
+ opt_access_secret :: Maybe String,
+ opt_heartbeat :: Maybe Int,
opt_help :: Bool,
opt_ignore_replies :: Bool,
opt_ignore_retweets :: Bool,
+ opt_sendmail_path :: FilePath,
opt_from :: Maybe String,
opt_to :: Maybe String,
opt_verbose :: Bool }
-- | Constructs an instance of Options, with each of its members set
-- to default values.
default_options :: Options
-default_options = Options { opt_heartbeat = Just 600,
+default_options = Options { opt_access_token = Nothing,
+ opt_access_secret = Nothing,
+ opt_consumer_key = Nothing,
+ opt_consumer_secret = Nothing,
+ opt_heartbeat = Just 600,
opt_help = False,
opt_ignore_replies = False,
opt_ignore_retweets = False,
+ opt_sendmail_path = "/usr/sbin/sendmail",
opt_from = Nothing,
opt_to = Nothing,
opt_verbose = False }
options :: [OptDescr (Options -> IO Options)]
options =
[ Option
- ['h']["help"]
+ "" ["consumer-key"]
+ (ReqArg set_consumer_key "consumer-key")
+ "Your Twitter API consumer key.",
+
+ Option
+ "" ["consumer-secret"]
+ (ReqArg set_consumer_secret "consumer-secret")
+ "Your Twitter API consumer secret.",
+
+ Option
+ "" ["access-token"]
+ (ReqArg set_access_token "access-token")
+ "Your Twitter API access token.",
+
+ Option
+ "" ["access-secret"]
+ (ReqArg set_access_secret "access-secret")
+ "Your Twitter API access secret.",
+
+ Option
+ "h" ["help"]
(NoArg set_help)
"Prints this help message.",
-
+
Option
- ['n']["heartbeat"]
+ "n" ["heartbeat"]
(ReqArg set_heartbeat "heartbeat")
"How many seconds to wait between polling.",
-
+
Option
- ['t']["to"]
+ "t" ["to"]
(ReqArg set_to "email_address")
"Send tweets TO email_address.",
Option
- ['f']["from"]
+ "f" ["from"]
(ReqArg set_from "email_address")
"Send tweets FROM email_address.",
Option
- ['i']["ignore-replies"]
+ "s" ["sendmail_path"]
+ (ReqArg set_sendmail_path "sendmail_path")
+ "Use sendmail_path to send mail",
+
+ Option
+ "i" ["ignore-replies"]
(NoArg set_ignore_replies)
"Ignore replies.",
Option
- ['I']["ignore-retweets"]
+ "I" ["ignore-retweets"]
(NoArg set_ignore_retweets)
"Ignore retweets.",
Option
- ['v']["verbose"]
+ "v" ["verbose"]
(NoArg set_verbose)
"Be verbose about stuff."
]
[(n,_)] -> Just n
_ -> Nothing
+set_consumer_key :: String -> Options -> IO Options
+set_consumer_key arg opts =
+ return opts { opt_consumer_key = Just arg }
+
+set_consumer_secret :: String -> Options -> IO Options
+set_consumer_secret arg opts =
+ return opts { opt_consumer_secret = Just arg }
+
+set_access_token :: String -> Options -> IO Options
+set_access_token arg opts =
+ return opts { opt_access_token = Just arg }
+
+set_access_secret :: String -> Options -> IO Options
+set_access_secret arg opts =
+ return opts { opt_access_secret = Just arg }
+
set_heartbeat :: String -> Options -> IO Options
set_heartbeat arg opts = do
let new_heartbeat = parse_int arg
return opts { opt_heartbeat = new_heartbeat }
set_help :: Options -> IO Options
-set_help opts = do
+set_help opts =
return opts { opt_help = True }
set_ignore_retweets :: Options -> IO Options
set_verbose opts =
return opts { opt_verbose = True }
+set_sendmail_path :: String -> Options -> IO Options
+set_sendmail_path arg opts =
+ return opts { opt_sendmail_path = arg }
+
set_to :: String -> Options -> IO Options
-set_to arg opts = do
+set_to arg opts =
return opts { opt_to = Just arg }
set_from :: String -> Options -> IO Options
-set_from arg opts = do
+set_from arg opts =
return opts { opt_from = Just arg }
-- | The usage header.
usage :: String
-usage = "Usage: twat [-n heartbeat] [-t to_address] [-f from_address] <username1> [username2, [username3]...]"
+usage = "Usage: twat --consumer-key=<key> --consumer-secret=<secret> --access-token=<key> --access-secret=<secret> [-n heartbeat] [-t to_address] [-f from_address] [-s path-to-sendmail] <username1> [username2, [username3]...]"
-- | Was the help option passed?
-- list, one after another, on a default_options record. The end
-- result should be an Options instance with all of its members set
-- correctly.
- opts <- foldl (>>=) (return default_options) actions
-
- return opts
+ foldl (>>=) (return default_options) actions
-- | A list of parse errors relating to the heartbeat.
heartbeat_errors :: IO [String]
heartbeat_errors = do
hb <- parse_heartbeat
- if (isNothing hb)
- then return ["\"heartbeat\" does not appear to be an integer."]
- else return []
+ return ["\"heartbeat\" does not appear to be an integer." | isNothing hb ]
--- |Parse errors relating to the list of usernames.
+-- | Parse errors relating to the list of usernames.
username_errors :: IO [String]
username_errors = do
argv <- getArgs
let (_, usernames, _) = getOpt Permute options argv
+ return [ "no usernames provided." | null usernames ]
- if (null usernames)
- then return ["no usernames provided."]
- else return []
-
--- |Parse errors relating to the "To" address.
+-- | Parse errors relating to the "To" address.
to_errors :: IO [String]
to_errors = do
toaddr <- parse_to_address
fromaddr <- parse_from_address
- if (isNothing toaddr) && (isJust fromaddr)
- then return ["\"from\" address specified without \"to\" address."]
- else return []
+ return ["\"from\" address specified without \"to\" address."
+ | (isNothing toaddr) && (isJust fromaddr) ]
+
+
+-- | Errors for the sendmail path argument.
+sendmail_path_errors :: IO [String]
+sendmail_path_errors = do
+ sendmail <- parse_sendmail_path
+ exists <- doesFileExist sendmail
+ return [ "sendmail path does not exist" | not exists ]
-- | Parse errors relating to the "From" address.
from_errors = do
toaddr <- parse_to_address
fromaddr <- parse_from_address
- if (isJust toaddr) && (isNothing fromaddr)
- then return ["\"to\" address specified without \"from\" address."]
- else return []
+ return [ "\"to\" address specified without \"from\" address."
+ | (isJust toaddr) && (isNothing fromaddr) ]
-- | Format an error message for printing.
errs_username <- username_errors
errs_to <- to_errors
errs_from <- from_errors
+ errs_sendmail <- sendmail_path_errors
return $ map format_error (errors ++
errs_heartbeat ++
errs_username ++
+ errs_sendmail ++
errs_to ++
errs_from)
opts <- parse_options
return (opt_to opts)
+-- | What sendmail path was given on the command line?
+parse_sendmail_path :: IO FilePath
+parse_sendmail_path = do
+ opts <- parse_options
+ return (opt_sendmail_path opts)
+
-- | What "From" address was given on the command line?
parse_from_address :: IO (Maybe String)
parse_from_address = do
get_cfg :: IO Cfg
get_cfg = do
opts <- parse_options
- return Cfg { heartbeat = fromJust $ opt_heartbeat opts,
+ return Cfg { consumer_key = fromJust $ opt_consumer_key opts,
+ consumer_secret = fromJust $ opt_consumer_secret opts,
+ access_token = fromJust $ opt_access_token opts,
+ access_secret = fromJust $ opt_access_secret opts,
+ heartbeat = fromJust $ opt_heartbeat opts,
ignore_replies = opt_ignore_replies opts,
ignore_retweets = opt_ignore_retweets opts,
+ sendmail_path = opt_sendmail_path opts,
from_address = opt_from opts,
to_address = opt_to opts,
verbose = opt_verbose opts }
projects / dead / halcyon.git / blobdiff