95 lines
3.9 KiB
Haskell
95 lines
3.9 KiB
Haskell
{-# LANGUAGE CPP #-}
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{-|
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Utilities for top-level modules and ghci. See also Hledger.Data.IO and
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Hledger.Data.Utils.
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-}
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module Hledger.Utils
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where
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import Control.Monad.Error
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import Hledger.Data
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import Hledger.Cli.Options (Opt(..),ledgerFilePathFromOpts) -- ,optsToFilterSpec)
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import System.Directory (doesFileExist)
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import System.IO (stderr)
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#if __GLASGOW_HASKELL__ <= 610
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import System.IO.UTF8 (hPutStrLn)
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#else
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import System.IO (hPutStrLn)
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#endif
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import System.Exit
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import System.Process (readProcessWithExitCode)
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import System.Info (os)
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import System.Time (ClockTime,getClockTime)
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-- | Parse the user's specified ledger file and run a hledger command on
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-- it, or report a parse error. This function makes the whole thing go.
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-- Warning, this provides only an uncached Ledger (no accountnametree or
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-- accountmap), so cmd must cacheLedger'/crunchJournal if needed.
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withLedgerDo :: [Opt] -> [String] -> String -> ([Opt] -> [String] -> Ledger -> IO ()) -> IO ()
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withLedgerDo opts args cmdname cmd = do
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-- We kludgily read the file before parsing to grab the full text, unless
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-- it's stdin, or it doesn't exist and we are adding. We read it strictly
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-- to let the add command work.
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f <- ledgerFilePathFromOpts opts
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let f' = if f == "-" then "/dev/null" else f
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fileexists <- doesFileExist f
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let creating = not fileexists && cmdname == "add"
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t <- getCurrentLocalTime
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tc <- getClockTime
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txt <- if creating then return "" else strictReadFile f'
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let runcmd = cmd opts args . mkLedger opts f tc txt
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if creating
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then runcmd nulljournal
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else (runErrorT . parseLedgerFile t) f >>= either parseerror runcmd
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where parseerror e = hPutStrLn stderr e >> exitWith (ExitFailure 1)
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mkLedger :: [Opt] -> FilePath -> ClockTime -> String -> Journal -> Ledger
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mkLedger opts f tc txt j = nullledger{journal=j'}
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where j' = (canonicaliseAmounts costbasis j){filepath=f,filereadtime=tc,jtext=txt}
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costbasis=CostBasis `elem` opts
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-- | Get a Ledger from the given string and options, or raise an error.
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ledgerFromStringWithOpts :: [Opt] -> String -> IO Ledger
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ledgerFromStringWithOpts opts s = do
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tc <- getClockTime
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j <- journalFromString s
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return $ mkLedger opts "" tc s j
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-- -- | Read a Ledger from the given file, or give an error.
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-- readLedgerWithOpts :: [Opt] -> [String] -> FilePath -> IO Ledger
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-- readLedgerWithOpts opts args f = do
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-- t <- getCurrentLocalTime
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-- readLedger f
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-- -- | Convert a Journal to a canonicalised, cached and filtered Ledger
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-- -- based on the command-line options/arguments and a reference time.
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-- filterAndCacheLedgerWithOpts :: [Opt] -> [String] -> LocalTime -> String -> Journal -> Ledger
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-- filterAndCacheLedgerWithOpts opts args = filterAndCacheLedger . optsToFilterSpec opts args
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-- | Attempt to open a web browser on the given url, all platforms.
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openBrowserOn :: String -> IO ExitCode
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openBrowserOn u = trybrowsers browsers u
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where
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trybrowsers (b:bs) u = do
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(e,_,_) <- readProcessWithExitCode b [u] ""
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case e of
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ExitSuccess -> return ExitSuccess
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ExitFailure _ -> trybrowsers bs u
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trybrowsers [] u = do
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putStrLn $ printf "Sorry, I could not start a browser (tried: %s)" $ intercalate ", " browsers
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putStrLn $ printf "Please open your browser and visit %s" u
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return $ ExitFailure 127
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browsers | os=="darwin" = ["open"]
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| os=="mingw32" = ["start"]
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| otherwise = ["sensible-browser","gnome-www-browser","firefox"]
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-- jeffz: write a ffi binding for it using the Win32 package as a basis
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-- start by adding System/Win32/Shell.hsc and follow the style of any
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-- other module in that directory for types, headers, error handling and
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-- what not.
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-- ::ShellExecute(NULL, "open", "www.somepage.com", NULL, NULL, SW_SHOWNORMAL);
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-- ::ShellExecute(NULL, "open", "firefox.exe", "www.somepage.com" NULL, SW_SHOWNORMAL);
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