fsh-csv (empty) → 0.1.0.0

raw patch · 5 files changed

+152/−0 lines, 5 filesdep +basedep +hintsetup-changed

Dependencies added: base, hint

Files

• LICENSE +20/−0
• Setup.hs +2/−0
• fsh-csv.cabal +24/−0
• src/FSH_CSV.hs +88/−0
• src/Transform.hs +18/−0

@@ -0,0 +1,20 @@+Copyright (c) 2017 iostreamer-X++Permission is hereby granted, free of charge, to any person obtaining+a copy of this software and associated documentation files (the+"Software"), to deal in the Software without restriction, including+without limitation the rights to use, copy, modify, merge, publish,+distribute, sublicense, and/or sell copies of the Software, and to+permit persons to whom the Software is furnished to do so, subject to+the following conditions:++The above copyright notice and this permission notice shall be included+in all copies or substantial portions of the Software.++THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

@@ -0,0 +1,2 @@+import Distribution.Simple+main = defaultMain

@@ -0,0 +1,24 @@+-- Initial fsh-csv.cabal generated by cabal init.  For further +-- documentation, see http://haskell.org/cabal/users-guide/++name:                fsh-csv+version:             0.1.0.0+synopsis:            csv parser for fsh+description:         This is a csv parser for fsh. To use this parser, use the -p flag and pass 'csv' as argument+license:             MIT+license-file:        LICENSE+author:              iostreamer-X+maintainer:          iostreamer007@gmail.com+-- copyright:           +category:            Distribution+build-type:          Simple+-- extra-source-files:  +cabal-version:       >=1.10++library+  exposed-modules:     FSH_CSV+  other-modules:       Transform+  -- other-extensions:    +  build-depends:       base >=4.8 && <4.9, hint+  hs-source-dirs:      src+  default-language:    Haskell2010

@@ -0,0 +1,88 @@+module FSH_CSV where++import Transform+import Text.ParserCombinators.ReadP+import Language.Haskell.Interpreter as I+import Data.List++--- PARSING++isChar = (/=',')++charParser :: ReadP [Char]+charParser = many1 (satisfy isChar)++-- This parses characters till a comma is encountered+getParsed :: ReadS [Char]+getParsed = readP_to_S charParser++-- Leading comma needs to be removed or else our parser will output []+removeLeadingComma (',':xs) = removeLeadingComma xs+removeLeadingComma str = str++-- Only the last element is of interest, rest are incomplete+getPair :: [Char] -> ([Char], [Char])+getPair line = +  parsedPair $ getParsed.removeLeadingComma $ line+  where+    parsedPair list@(x:xs) = last list+    parsedPair [] = ("","")++{-+ - When we run getPair on a string, we get a pair of strings.+ - The first half is parsed, the second half failed our parser.+ - The second half failed because it had comma, so if we run getPair on+ - the unparsed string, it will ultimately be parsed.+ -+ - And that is the solution presented here, we run getPair,+ - pick the parsed part and put it in a list, and run getPair on unparsed part.+ - We do this till unparsed is [] ie empty and then we return the list of parsed words.+ -}++getWords' :: [[Char]] -> ([Char], [Char]) -> [[Char]]+getWords' list (parsed,[]) = list++[parsed]+getWords' list (parsed,unparsed) = return (getPair $ unparsed) >>= getWords' (if length parsed > 0 then (list++[parsed]) else [])++getWords :: [Char] -> [[Char]]+getWords line = getWords' [] ([],line)++--- END PARSING++--- TRANSFORMING++mapLines :: [[Char]] -> [[[Char]]]+mapLines = map getWords++mapQuotes :: [[String]] -> [[Char]]+mapQuotes = map ((\str->","++str).toStringList.encloseWithQuotes)++mapBraces :: [String] -> [Char]+mapBraces list = "[" ++ (tail (unwords list)) ++ "]"++parse :: [[Char]] -> [Char]+parse = mapBraces.mapQuotes.mapLines++--- END TRANSFORMING++--- EXECUTING++printList (x:xs) = putStrLn x >> printList xs+printList [] = return ()+++run :: [Char] -> String -> IO ()+run functionStr processedArgs =+  do+    splits <- return (lines processedArgs)+    header <- return (head splits)+    unparsed <- return (tail splits)+    result <- runInterpreter $ setImports ["Prelude"] >> interpret (functionStr ++ " " ++ parse unparsed) (as :: [[String]])+    case result of+      (Right res) -> +        do+          outputMatrix <- return $ (getWords header) : res+          output <- return $ map (intercalate ",") outputMatrix+          printList output+      (Left err)   -> error $ show err++--- END EXECUTING

@@ -0,0 +1,18 @@+module Transform where++-- The output of the bash command is converted to a list of strings+-- and this list needs to represented as a String to be interpreted.+-- To do this, each string in the list is enclosed with quotes+-- and then joined together to get string representation of list.+--+-- The way this is achieved is each string in list is mapped to {,"str"},+-- so ["1","2"] becomes [ ",\"1\"" , ",\"2\"" ]+-- Now all that is left is join the list, hence unwords, but we get a leading {,}+-- hence `tail` ++encloseWithQuotes :: [String] -> [String]+encloseWithQuotes = map (\s->",\""++s++"\"")++toStringList :: [String] -> String+toStringList str = "[" ++ (tail.unwords $ str) ++ "]"+