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authorDmitryIvanov <>2014-10-23 12:30:00 (GMT)
committerhdiff <hdiff@hdiff.luite.com>2014-10-23 12:30:00 (GMT)
commit50a2d488e98d920c130b30d43bcee8a1946e6404 (patch)
treed1c54c0f9e00e4c0114bb4e837d02aa0203e2081
version 0.1.00.1.0
-rw-r--r--LICENSE340
-rw-r--r--Setup.hs2
-rw-r--r--src/Yi/Fuzzy.hs240
-rw-r--r--yi-fuzzy-open.cabal37
4 files changed, 619 insertions, 0 deletions
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..d6a9326
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,340 @@
+GNU GENERAL PUBLIC LICENSE
+ Version 2, June 1991
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+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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diff --git a/Setup.hs b/Setup.hs
new file mode 100644
index 0000000..9a994af
--- /dev/null
+++ b/Setup.hs
@@ -0,0 +1,2 @@
+import Distribution.Simple
+main = defaultMain
diff --git a/src/Yi/Fuzzy.hs b/src/Yi/Fuzzy.hs
new file mode 100644
index 0000000..ba19608
--- /dev/null
+++ b/src/Yi/Fuzzy.hs
@@ -0,0 +1,240 @@
+{-# LANGUAGE DeriveDataTypeable #-}
+{-# LANGUAGE DeriveGeneric #-}
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE ScopedTypeVariables #-}
+{-# OPTIONS_HADDOCK show-extensions #-}
+
+-- |
+-- Module : Yi.Fuzzy
+-- License : GPL-2
+-- Maintainer : yi-devel@googlegroups.com
+-- Stability : experimental
+-- Portability : portable
+
+-- TODO if need arises: factor out generic part that captures a pattern of
+-- having an interactive minibuffer and a window that just renders some state.
+
+module Yi.Fuzzy (fuzzyOpen) where
+
+import Control.Applicative
+import Control.Monad
+import Control.Monad.Base
+import Control.Monad.State (gets)
+import Data.Binary
+import Data.Default
+import Data.List (isSuffixOf)
+import qualified Data.Map.Strict as M
+import Data.Monoid
+import qualified Data.Text as T
+import qualified Data.Text.Encoding as T
+import Data.Typeable
+import qualified Data.Vector as V
+import GHC.Generics
+import System.Directory (doesDirectoryExist, getDirectoryContents)
+import System.FilePath ((</>))
+
+import Yi
+import Yi.Completion
+import Yi.MiniBuffer
+import qualified Yi.Rope as R
+import Yi.Types
+import Yi.Utils ()
+
+-- FuzzyState is stored in minibuffer's dynamic state
+data FuzzyState = FuzzyState
+ { _fsItems :: !(V.Vector FuzzyItem)
+ , fsSelectedIndex :: !(Maybe Int)
+ , fsNeedle :: !T.Text
+ } deriving (Show, Generic, Typeable)
+
+data FuzzyItem
+ = FileItem { _filePath :: !FilePath }
+ | BufferItem { _bufferIdent :: !BufferId }
+ deriving (Show, Typeable)
+
+-- TODO: make subsequenceMatch work on Text
+itemToString :: FuzzyItem -> String
+itemToString (FileItem x) = x
+itemToString (BufferItem (MemBuffer x)) = T.unpack x
+itemToString (BufferItem (FileBuffer x)) = x
+
+fuzzyOpen :: YiM ()
+fuzzyOpen = do
+ fileList <- fmap (fmap FileItem)
+ (liftBase (getRecursiveContents "."))
+ bufList <- fmap (fmap (BufferItem . ident . attributes))
+ (withEditor (gets (M.elems . buffers)))
+ promptRef <- withEditor (spawnMinibufferE "" (const localKeymap))
+ let initialState =
+ FuzzyState (V.fromList (fileList <> bufList))
+ (Just 0)
+ ""
+ withGivenBuffer promptRef $ do
+ putBufferDyn initialState
+ withEditor (renderE initialState)
+
+-- shamelessly stolen from Chapter 9 of Real World Haskell
+-- takes about 3 seconds to traverse linux kernel, which is not too outrageous
+-- TODO: check if it works at all with cyclic links
+-- TODO: perform in background, limit file count or directory depth
+getRecursiveContents :: FilePath -> IO [FilePath]
+getRecursiveContents topdir = do
+ names <- getDirectoryContents topdir
+ let properNames = filter predicate names
+ predicate fileName = and
+ [ fileName `notElem` [".", "..", ".git", ".svn"]
+ , not (".hi" `isSuffixOf` fileName)
+ , not ("-boot" `isSuffixOf` fileName)
+ ]
+ paths <- forM properNames $ \name -> do
+ let path = topdir </> name
+ isDirectory <- doesDirectoryExist path
+ if isDirectory
+ then getRecursiveContents path
+ else return [path]
+ return (concat paths)
+
+localKeymap :: Keymap
+localKeymap =
+ choice
+ [ spec KEnter ?>>! openInThisWindow
+ , ctrlCh 't' ?>>! openInNewTab
+ , ctrlCh 's' ?>>! openInSplit
+ , spec KEsc ?>>! cleanupE
+ , ctrlCh 'g' ?>>! cleanupE
+ , ctrlCh 'h' ?>>! updatingB (deleteB Character Backward)
+ , spec KBS ?>>! updatingB (deleteB Character Backward)
+ , spec KDel ?>>! updatingB (deleteB Character Backward)
+ , ctrlCh 'a' ?>>! moveToSol
+ , ctrlCh 'e' ?>>! moveToEol
+ , spec KLeft ?>>! moveXorSol 1
+ , spec KRight ?>>! moveXorEol 1
+ , ctrlCh 'p' ?>>! modifyE decrementIndex
+ , spec KUp ?>>! modifyE decrementIndex
+ , ctrlCh 'n' ?>>! modifyE incrementIndex
+ , spec KDown ?>>! modifyE incrementIndex
+ , ctrlCh 'w' ?>>! updatingB (deleteB unitWord Backward)
+ , ctrlCh 'u' ?>>! updatingB (moveToSol >> deleteToEol)
+ , ctrlCh 'k' ?>>! updatingB deleteToEol
+ ]
+ <|| (insertChar >>! ((withCurrentBuffer updateNeedleB) >>= renderE))
+ where updatingB :: BufferM () -> EditorM ()
+ updatingB bufAction = withCurrentBuffer (bufAction >> updateNeedleB) >>= renderE
+
+updateNeedleB :: BufferM FuzzyState
+updateNeedleB = do
+ needle <- R.toText <$> readLnB
+ oldState <- getBufferDyn
+ let intermediateState = oldState { fsNeedle = needle }
+ newState = intermediateState
+ { fsSelectedIndex =
+ case V.toList (filteredItems intermediateState) of
+ [] -> Nothing
+ (_, index) : _ -> Just index
+ }
+ putBufferDyn newState
+ return newState
+
+filteredItems :: FuzzyState -> (V.Vector (FuzzyItem, Int))
+filteredItems (FuzzyState items _ needle) =
+ V.filter (subsequenceMatch (T.unpack needle) . itemToString . fst)
+ (V.zip items (V.enumFromTo 0 (V.length items)))
+
+modifyE :: (FuzzyState -> FuzzyState) -> EditorM ()
+modifyE f = do
+ prevState <- withCurrentBuffer getBufferDyn
+ let newState = f prevState
+ withCurrentBuffer (putBufferDyn newState)
+ renderE newState
+
+incrementIndex :: FuzzyState -> FuzzyState
+incrementIndex fs@(FuzzyState _ Nothing _) = fs
+incrementIndex fs@(FuzzyState _ (Just index) _) =
+ let fitems = filteredItems fs
+ steps = V.zipWith (\x y -> (snd x, snd y)) fitems (V.tail fitems)
+ newIndex = case V.find ((== index) . fst) steps of
+ Nothing -> Just index
+ Just (_, nextIndex) -> Just nextIndex
+ in fs { fsSelectedIndex = newIndex }
+
+decrementIndex :: FuzzyState -> FuzzyState
+decrementIndex fs@(FuzzyState _ Nothing _) = fs
+decrementIndex fs@(FuzzyState _ (Just index) _) =
+ let fitems = filteredItems fs
+ steps = V.zipWith (\x y -> (snd x, snd y)) (V.tail fitems) fitems
+ newIndex = case V.find ((== index) . fst) steps of
+ Nothing -> Just index
+ Just (_, prevIndex) -> Just prevIndex
+ in fs { fsSelectedIndex = newIndex }
+
+renderE :: FuzzyState -> EditorM ()
+renderE fs@(FuzzyState _ selIndex _) = do
+ let content = V.toList (fmap renderItem (filteredItems fs))
+ -- TODO justify to actual screen width
+ renderItem (item, itemIndex) = (T.justifyLeft 79 ' ' . mconcat)
+ [ (if Just itemIndex == selIndex then "* " else " ")
+ , renderItem' item
+ ]
+ renderItem' (FileItem x) = "File " <> T.pack x
+ renderItem' (BufferItem (MemBuffer x)) = "Buffer " <> x
+ renderItem' (BufferItem (FileBuffer x)) = "Buffer " <> T.pack x
+ setStatus (content, defaultStyle)
+
+openInThisWindow :: YiM ()
+openInThisWindow = openRoutine (return ())
+
+openInSplit :: YiM ()
+openInSplit = openRoutine splitE
+
+openInNewTab :: YiM ()
+openInNewTab = openRoutine newTabE
+
+openRoutine :: EditorM () -> YiM ()
+openRoutine preOpenAction = do
+ FuzzyState items mselIndex _ <- withCurrentBuffer getBufferDyn
+ case mselIndex of
+ Nothing -> printMsg "Nothing selected"
+ Just selIndex -> do
+ let action = case items V.! selIndex of
+ FileItem x -> void (editFile x)
+ BufferItem x -> withEditor $ do
+ bufs <- gets (M.assocs . buffers)
+ case filter ((== x) . ident . attributes . snd) bufs of
+ [] -> error ("Couldn't find buffer" <> show x)
+ (bufRef, _) : _ -> switchToBufferE bufRef
+ withEditor $ do
+ cleanupE
+ preOpenAction
+ action
+
+insertChar :: Keymap
+insertChar = textChar >>= write . insertB
+
+cleanupE :: EditorM ()
+cleanupE = clrStatus >> closeBufferAndWindowE
+
+instance Binary FuzzyItem where
+ put (FileItem x) = put (0 :: Int) >> put x
+ put (BufferItem x) = put (1 :: Int) >> put x
+ get = do
+ tag :: Int <- get
+ case tag of
+ 0 -> liftM FileItem get
+ 1 -> liftM BufferItem get
+ _ -> error "Unexpected FuzzyItem Binary."
+
+instance Binary FuzzyState where
+ put (FuzzyState items index needle) = do
+ put (V.length items)
+ V.mapM_ put items
+ put index
+ put (T.encodeUtf8 needle)
+ get = do
+ itemCount <- get
+ items <- liftM V.fromList (replicateM itemCount get)
+ liftM2 (FuzzyState items) get (liftM T.decodeUtf8 get)
+
+instance Default FuzzyState where
+ def = FuzzyState mempty Nothing mempty
+
+instance YiVariable FuzzyState
diff --git a/yi-fuzzy-open.cabal b/yi-fuzzy-open.cabal
new file mode 100644
index 0000000..4baa7d8
--- /dev/null
+++ b/yi-fuzzy-open.cabal
@@ -0,0 +1,37 @@
+name: yi-fuzzy-open
+version: 0.1.0
+category: Development, Editor
+synopsis: Fuzzy open plugin for Yi.
+description:
+ This plugin tries to do what ctrl-p does for vim and helm does for emacs.
+license: GPL-2
+license-file: LICENSE
+author: AUTHORS
+maintainer: yi-devel@googlegroups.com
+homepage: https://github.com/yi-editor/yi-fuzzy-open
+bug-reports: https://github.com/yi-editor/yi-fuzzy-open/issues
+Cabal-Version: >= 1.6
+tested-with: GHC==7.8.3
+build-type: Simple
+
+library
+ hs-source-dirs: src
+ exposed-modules:
+ Yi.Fuzzy
+
+ build-depends:
+ base >= 4.6 && <5
+ , binary
+ , containers
+ , data-default
+ , directory
+ , filepath
+ , mtl
+ , text
+ , transformers-base
+ , vector
+ , yi >= 0.10.1
+ , yi-language
+ , yi-rope
+
+ ghc-options: -Wall