80 lines
3.4 KiB
Haskell
80 lines
3.4 KiB
Haskell
{-|
|
|
|
|
Utilities for top-level modules and ghci. See also "Ledger.IO" and
|
|
"Ledger.Utils".
|
|
|
|
-}
|
|
|
|
module Utils
|
|
where
|
|
import Control.Monad.Error
|
|
import Ledger
|
|
import Options (Opt,ledgerFilePathFromOpts,optsToFilterSpec)
|
|
import System.Directory (doesFileExist)
|
|
import System.IO
|
|
import System.Exit
|
|
import System.Cmd (system)
|
|
import System.Info (os)
|
|
import System.Time (getClockTime)
|
|
|
|
|
|
-- | Parse the user's specified ledger file and run a hledger command on
|
|
-- it, or report a parse error. This function makes the whole thing go.
|
|
withLedgerDo :: [Opt] -> [String] -> String -> ([Opt] -> [String] -> Ledger -> IO ()) -> IO ()
|
|
withLedgerDo opts args cmdname cmd = do
|
|
-- We kludgily read the file before parsing to grab the full text, unless
|
|
-- it's stdin, or it doesn't exist and we are adding. We read it strictly
|
|
-- to let the add command work.
|
|
f <- ledgerFilePathFromOpts opts
|
|
let f' = if f == "-" then "/dev/null" else f
|
|
fileexists <- doesFileExist f
|
|
let creating = not fileexists && cmdname == "add"
|
|
rawtext <- if creating then return "" else strictReadFile f'
|
|
t <- getCurrentLocalTime
|
|
tc <- getClockTime
|
|
let go = cmd opts args . filterAndCacheLedgerWithOpts opts args t rawtext . (\rl -> rl{filepath=f,filereadtime=tc})
|
|
if creating then go rawLedgerEmpty else (runErrorT . parseLedgerFile t) f
|
|
>>= flip either go
|
|
(\e -> hPutStrLn stderr e >> exitWith (ExitFailure 1))
|
|
|
|
-- | Get a Ledger from the given string and options, or raise an error.
|
|
ledgerFromStringWithOpts :: [Opt] -> [String] -> LocalTime -> String -> IO Ledger
|
|
ledgerFromStringWithOpts opts args reftime s =
|
|
liftM (filterAndCacheLedgerWithOpts opts args reftime s) $ rawLedgerFromString s
|
|
|
|
-- | Read a Ledger from the given file, filtering according to the
|
|
-- options, or give an error.
|
|
readLedgerWithOpts :: [Opt] -> [String] -> FilePath -> IO Ledger
|
|
readLedgerWithOpts opts args f = do
|
|
t <- getCurrentLocalTime
|
|
readLedgerWithFilterSpec (optsToFilterSpec opts args t) f
|
|
|
|
-- | Convert a RawLedger to a canonicalised, cached and filtered Ledger
|
|
-- based on the command-line options/arguments and a reference time.
|
|
filterAndCacheLedgerWithOpts :: [Opt] -> [String] -> LocalTime -> String -> RawLedger -> Ledger
|
|
filterAndCacheLedgerWithOpts opts args = filterAndCacheLedger . optsToFilterSpec opts args
|
|
|
|
-- | Attempt to open a web browser on the given url, all platforms.
|
|
openBrowserOn :: String -> IO ExitCode
|
|
openBrowserOn u = trybrowsers browsers u
|
|
where
|
|
trybrowsers (b:bs) u = do
|
|
e <- system $ printf "%s %s" b u
|
|
case e of
|
|
ExitSuccess -> return ExitSuccess
|
|
ExitFailure _ -> trybrowsers bs u
|
|
trybrowsers [] u = do
|
|
putStrLn $ printf "Sorry, I could not start a browser (tried: %s)" $ intercalate ", " browsers
|
|
putStrLn $ printf "Please open your browser and visit %s" u
|
|
return $ ExitFailure 127
|
|
browsers | os=="darwin" = ["open"]
|
|
| os=="mingw32" = ["start","firefox","safari","opera","iexplore"]
|
|
| otherwise = ["sensible-browser","firefox"]
|
|
-- jeffz: write a ffi binding for it using the Win32 package as a basis
|
|
-- start by adding System/Win32/Shell.hsc and follow the style of any
|
|
-- other module in that directory for types, headers, error handling and
|
|
-- what not.
|
|
-- ::ShellExecute(NULL, "open", "www.somepage.com", NULL, NULL, SW_SHOWNORMAL);
|
|
-- ::ShellExecute(NULL, "open", "firefox.exe", "www.somepage.com" NULL, SW_SHOWNORMAL);
|
|
|