On branch master

[user/henk/code/haskell/diddohs.git] / diddohs.hs

diff --git a/diddohs.hs b/diddohs.hs
index 0444e22aaec24fdc98ea57636160933adf4e7329..6884d1462cd52cb50d96fb6fc36c7b7dbf42fba4 100644 (file)
--- a/diddohs.hs
+++ b/diddohs.hs
@@ -1,12 +1,15 @@
 import Control.Applicative( (<$>) )
 import Control.Monad( unless )
-import qualified Data.Map as Map
 import Data.Time.Clock( UTCTime(..) )
-import Diddo( DiddoEntry(..), LogEntry(..), parseDiddoLogline, formatDiddoEntry, timestamp, logToDiddoEntry )
+import Data.Time.LocalTime( TimeZone(), ZonedTime(..), zonedTimeToUTC, utcToZonedTime )
+import Diddo( Diddo(..), LogEntry(..), parseDiddoLogline, formatDiddo, logToDiddo, parseToZonedTime )
 import System.Console.GetOpt
 import System.Environment( getArgs )
 import System.Exit( exitSuccess, exitFailure )
 import System.IO( stderr, hPutStr )
+import qualified Data.Map as Map
+import qualified Data.Text as T
+import qualified Data.Text.IO as TIO
 
 data Opt = Opt
     { optVerbose        :: Bool
@@ -22,56 +25,56 @@ data Opt = Opt
 
 defaultOpts :: Opt
 defaultOpts = Opt
-    { optVerbose = False
-    , optVersion = False
-    , optHelp = False
-    , optInputFiles = []
-    , optOutputFile = ""
-    , optInputFormat = "%FT%T%z"
-    , optOutputFormat = "%FT%T%z"
-    , optStartDate = ""
-    , optEndDate = ""
+    { optVerbose        = False
+    , optVersion        = False
+    , optHelp           = False
+    , optInputFiles     = []
+    , optOutputFile     = ""
+    , optInputFormat    = "%FT%T%z"
+    , optOutputFormat   = "%FT%T%z"
+    , optStartDate      = ""
+    , optEndDate        = ""
     }
 
 availableOptions :: [OptDescr (Opt -> IO Opt)]
 availableOptions =
     [ Option ['h']    ["help"]
-        (NoArg (\_ -> putStrLn (usageInfo "Usage: diddohs [OPTION...]" availableOptions) >> exitSuccess))
+        (NoArg (\ _ -> putStrLn (usageInfo "Usage: diddohs [OPTION...]" availableOptions) >> exitSuccess))
         "Display program help"
     , Option ['v']    ["verbose"]
-        (NoArg (\opts -> return opts { optVerbose = True }))
+        (NoArg (\ opts -> return opts { optVerbose = True }))
         "More detailed output"
     , Option ['V']    ["version"]
-        (NoArg (\opts -> return opts { optVersion = True }))
+        (NoArg (\ opts -> return opts { optVersion = True }))
         "Display program version"
     , Option ['f']    ["file"]
-        (ReqArg (\arg opts -> return opts { optInputFiles = optInputFiles opts ++ [arg]}) "FILE" )
+        (ReqArg (\ arg opts -> return opts { optInputFiles = optInputFiles opts ++ [arg]}) "FILE" )
         "Read from FILE"
     , Option ['w']    ["output"]
-        (ReqArg (\arg opts -> return opts { optOutputFile = arg }) "FILE")
+        (ReqArg (\ arg opts -> return opts { optOutputFile = arg }) "FILE")
         "Write to FILE"
     , Option ['i']    ["informat"]
-        (ReqArg (\arg opts -> return opts { optInputFormat = arg }) "FORMAT")
+        (ReqArg (\ arg opts -> return opts { optInputFormat = arg }) "FORMAT")
         "Timeformat used in input"
     , Option ['o']    ["outformat"]
-        (ReqArg (\arg opts -> return opts { optOutputFormat = arg }) "FORMAT")
+        (ReqArg (\ arg opts -> return opts { optOutputFormat = arg }) "FORMAT")
         "Timeformat used in output"
     , Option ['s']    ["start"]
-        (ReqArg (\arg opts -> return opts { optStartDate = arg }) "DATE")
+        (ReqArg (\ arg opts -> return opts { optStartDate = arg }) "DATE")
         "Start of reporting period"
     , Option ['e']    ["end"]
-        (ReqArg (\arg opts -> return opts { optEndDate = arg }) "DATE")
+        (ReqArg (\ arg opts -> return opts { optEndDate = arg }) "DATE")
         "End of reporting period"
     ]
 
--- SECTION: Map of logentries to Map of DiddoEntries
-mapToDiddoEntries :: Map.Map UTCTime Diddo.LogEntry -> Map.Map UTCTime Diddo.DiddoEntry
-mapToDiddoEntries logmap = Map.mapWithKey toDddEntry logmap
+-- SECTION: Map of logentries to Map of Diddos
+logentryMapToDiddoMap :: Map.Map UTCTime Diddo.LogEntry -> Map.Map UTCTime Diddo.Diddo
+logentryMapToDiddoMap logmap = Map.mapWithKey toDddEntry logmap
     where
-        toDddEntry key value = Diddo.logToDiddoEntry (preceedingTimestamp key) value
-        preceedingTimestamp x = case Map.lookupLT x logmap of
-            Just y          -> fst y
-            Nothing         -> fst $ Map.findMin logmap
+        toDddEntry key value    = Diddo.logToDiddo (precedingTimestamp key) value
+        precedingTimestamp x    = case Map.lookupLT x logmap of
+            Just (y,_)          -> y
+            Nothing             -> fst $ Map.findMin logmap
 -- SECTION: Map of logentries to Map of DiddoEntries
 
 main :: IO ()
@@ -84,22 +87,28 @@ main = do
         exitFailure
 
     effectiveOptions <- foldl (>>=) (return defaultOpts) givenOptions
+
+    let
+        inDateFmt               = optInputFormat effectiveOptions
+        outDateFmt              = optOutputFormat effectiveOptions
+
+        startDate               = parseToZonedTime inDateFmt $ optStartDate effectiveOptions
+        endDate                 = parseToZonedTime inDateFmt $ optEndDate effectiveOptions
     -- SECTION: option processing
 
-    dddLogEntries <-
-        map Diddo.parseDiddoLogline <$> case optInputFiles effectiveOptions of
-            files@(_:_)         -> lines . concat <$> mapM readFile files
-            []                  -> lines <$> getContents
+    loglines <- case optInputFiles effectiveOptions of
+            files@(_:_)     -> T.lines . T.concat <$> mapM TIO.readFile files
+            []              -> T.lines <$> TIO.getContents
 
     let
-        dddLogEntryMap      = Map.fromList $ map (\diddo -> (Diddo.timestamp diddo, diddo)) dddLogEntries
-        diddoEntriesMap     = mapToDiddoEntries dddLogEntryMap
-        inDateFmt           = optInputFormat effectiveOptions
-        outDateFmt          = optOutputFormat effectiveOptions
+        timestampLogentryMap                        = Map.fromList $ map Diddo.parseDiddoLogline loglines
+        (_, _, startedTimestampLogentryMap)         = Map.splitLookup (zonedTimeToUTC startDate) timestampLogentryMap
+        (endedTimestampLogentryMap, lastEntry, _)   = Map.splitLookup (zonedTimeToUTC endDate) startedTimestampLogentryMap
+        timestampDiddoMap                           = logentryMapToDiddoMap timestampLogentryMap
 
     -- DEBUG
     mapM_ putStrLn args
     -- DEBUG
 
-    mapM_ (putStrLn . snd) $ Map.toAscList $ Map.map (Diddo.formatDiddoEntry outDateFmt) diddoEntriesMap
+    mapM_ (TIO.putStrLn . snd) $ Map.toAscList $ Map.map (Diddo.formatDiddo outDateFmt) timestampDiddoMap