cli/Hcompta/CLI/Command.hs

   1 {-# LANGUAGE NamedFieldPuns #-}
   2 {-# LANGUAGE OverloadedStrings #-}
   3 {-# LANGUAGE TupleSections #-}
   4 module Hcompta.CLI.Command where
   5
   6 import           Data.Maybe (fromMaybe)
   7 import qualified Data.Text.Lazy as TL
   8 import           System.Console.GetOpt
   9                  ( ArgDescr(..)
  10                  , OptDescr(..)
  11                  , usageInfo )
  12 import           System.Environment (getProgName)
  13 import           System.Exit (exitWith, ExitCode(..))
  14 import qualified System.IO as IO
  15
  16 import qualified Hcompta.CLI.Args as Args
  17 import qualified Hcompta.CLI.Command.Balance as Command.Balance
  18 import qualified Hcompta.CLI.Command.GL as Command.GL
  19 import qualified Hcompta.CLI.Command.Print as Command.Print
  20 import           Hcompta.CLI.Context (Context)
  21 import qualified Hcompta.CLI.Context as Context
  22 import qualified Hcompta.CLI.Lang as Lang
  23 import qualified Hcompta.CLI.Write as Write
  24 import           Hcompta.Lib.Leijen ((<>))
  25 import qualified Hcompta.Lib.Leijen as W
  26
  27 usage :: IO String
  28 usage = do
  29         bin <- getProgName
  30         return $ unlines $
  31                 [ "SYNTAX "
  32                 , "  "++bin++" [option..] <command> [arguments]"
  33                 , ""
  34                 , usageInfo "OPTIONS" options
  35                 , "COMMANDS (use "++bin++" <command> --help for specific help)"
  36                 , "  balance [-i FILE]"
  37                 , "  print   [-i FILE]"
  38                 ]
  39
  40 options :: Args.Options Context
  41 options =
  42         [ Option "h" ["help"]
  43          (NoArg (\_opts _context -> do
  44                 usage >>= IO.hPutStr IO.stderr
  45                 exitWith ExitSuccess))
  46          "show this help"
  47         , Option "v" ["verbosity"]
  48          (OptArg (\arg _context context ->
  49                 case arg of
  50                  Nothing      ->
  51                         case Context.verbosity context of
  52                          v | v < maxBound ->
  53                                 return $ context{Context.verbosity=succ v}
  54                          _ -> return $ context
  55                  Just "error" -> return $ context{Context.verbosity=Context.Verbosity_Error}
  56                  Just "warn"  -> return $ context{Context.verbosity=Context.Verbosity_Warn}
  57                  Just "info"  -> return $ context{Context.verbosity=Context.Verbosity_Info}
  58                  Just "debug" -> return $ context{Context.verbosity=Context.Verbosity_Debug}
  59                  Just _       -> Write.fatal context $
  60                         W.text "--verbosity option expects \"error\", \"warn\", \"info\", or \"debug\" as value")
  61                 "error|warn|info|debug"
  62                 )
  63          "increment or set verbosity level, can be use multiple times"
  64         , Option "" ["color"]
  65          (OptArg (\arg _context context -> do
  66                 color <- case arg of
  67                  Nothing       -> return $ Just True
  68                  Just "always" -> return $ Just True
  69                  Just "never"  -> return $ Just False
  70                  Just "auto"   -> return $ Nothing
  71                  Just _        -> Write.fatal context $
  72                         W.text "--color option expects \"always\", \"auto\", or \"never\" as value"
  73                 return $ context{Context.color})
  74           "[always|auto|never]")
  75          "colorize output"
  76         , Option "" ["lang"]
  77          (ReqArg (\lang _context context -> do
  78                 return $ context{Context.lang =
  79                         fromMaybe (Context.lang context) $
  80                         Lang.lang_of_strings [lang]
  81                  })
  82           "[xx|xx-XX]")
  83          "RFC1766 / ISO 639-1 language code (eg, fr, en-GB, etc.)"
  84         ]
  85
  86 run :: Context -> String -> [String] -> IO ()
  87 run context cmd args =
  88         case cmd of
  89          "print"   -> Command.Print.run   context args
  90          "balance" -> Command.Balance.run context args
  91          "gl"      -> Command.GL.run      context args
  92          _ -> usage >>= Write.fatal context .
  93                 ((W.text "unknown command: " <> (W.text $ TL.pack cmd) <> W.line) <>) .
  94                 W.text . TL.pack