casing (empty) → 0.1.0.0

raw patch · 4 files changed

+167/−0 lines, 4 filesdep +basedep +splitsetup-changed

Dependencies added: base, split

Files

• LICENSE +20/−0
• Setup.hs +2/−0
• Text/Casing.hs +119/−0
• casing.cabal +26/−0

@@ -0,0 +1,20 @@+Copyright (c) 2015 Tobias Dammers++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 +1,119 @@+{-# LANGUAGE GeneralizedNewtypeDeriving #-}+-- | Conversions between several common identifier casing conventions:+--+-- - @PascalCase@ - no spacing between words, first letter in word is+-- uppercase, all others are lowercase.+-- - @camelCase@ - like @PascalCase@, but the very first letter is lowercase.+-- - @kebab-case@ - everything lowercase, dash delimits words.+-- - @snake_Case@ - underscores delimit words, case is unrestricted.+-- - @quiet_snake_case@ - underscores delimit words, everything lowercase.+-- - @SCREAMING_SNAKE_CASE@ - underscores delimit words, everything uppercase.+module Text.Casing+(+-- * Types+Identifier+-- * Parsing+, fromHumps+, fromKebab+, fromSnake+, fromAny+-- * Generating+, toCamel, toPascal, toSnake, toQuietSnake, toScreamingSnake, toKebab+-- * Shorthand functions+, pascal, camel, snake, quietSnake, screamingSnake, kebab+-- * Miscellaneous+, dropPrefix+)+where++import Data.Char+import Data.List (intersperse)+import Data.List.Split (wordsBy)+import Control.Applicative++-- | An opaque type that represents a parsed identifier.+newtype Identifier a = Identifier { unIdentifier :: [a] }+    deriving (Monad, Functor, Applicative, Show)++wordCase :: String -> String+wordCase "" = ""+wordCase (x:xs) = toUpper x : map toLower xs++-- | Convert from "humped" casing (@camelCase@ or @PascalCase@)+fromHumps :: String -> Identifier String+fromHumps = Identifier . go+    where+        go "" = [""]+        go (x:[]) = [x:[]]+        go (x:y:xs)+            | (not $ isUpper x) && (isUpper y) =+                let (z:zs) = go (y:xs)+                in [x]:(z:zs)+            | otherwise =+                let (z:zs) = go (y:xs)+                in (x:z):zs++-- | Convert from @kebab-cased-identifiers@+fromKebab :: String -> Identifier String+fromKebab = Identifier . wordsBy (== '-')++-- | Convert from @snake_cased@ (either flavor)+fromSnake :: String -> Identifier String+fromSnake = Identifier . wordsBy (== '_')++-- | Convert from anything, including mixed casing.+fromAny :: String -> Identifier String+fromAny str = fromHumps str >>= fromKebab >>= fromSnake++-- | To @PascalCase@+toPascal :: Identifier String -> String+toPascal = concat . map wordCase . unIdentifier++-- | To @camelCase@+toCamel :: Identifier String -> String+toCamel (Identifier (x:xs)) = concat $ map toLower x:map wordCase xs++-- | To @kebab-case@+toKebab :: Identifier String -> String+toKebab = concat . intersperse "-" . map (map toLower) . unIdentifier++-- | To @snake_Case@+toSnake :: Identifier String -> String+toSnake = concat . intersperse "_" . unIdentifier++-- | To @quiet_snake_case@+toQuietSnake :: Identifier String -> String+toQuietSnake = map toLower . toSnake++-- | To @SCREAMING_SNAKE_CASE@+toScreamingSnake :: Identifier String -> String+toScreamingSnake = map toUpper . toSnake++-- | Directly convert to @PascalCase@ through 'fromAny'+pascal :: String -> String+pascal = toPascal . fromAny++-- | Directly convert to @camelCase@ through 'fromAny'+camel :: String -> String+camel = toCamel . fromAny++-- | Directly convert to @snake_Case@ through 'fromAny'+snake :: String -> String+snake = toSnake . fromAny++-- | Directly convert to @quiet_snake_case@ through 'fromAny'+quietSnake :: String -> String+quietSnake = toQuietSnake . fromAny++-- | Directly convert to @SCREAMING_SNAKE_CASE@ through 'fromAny'+screamingSnake :: String -> String+screamingSnake = toScreamingSnake . fromAny++-- | Directly convert to @kebab-case@ through 'fromAny'+kebab :: String -> String+kebab = toKebab . fromAny++-- | Drop the first word from a parsed identifier. Typical usage is between+-- parsing and writing, e.g.: @toKebab . dropPrefix . fromAny $ "strHelloWorld" == "hello-world"@+dropPrefix :: Identifier String -> Identifier String+dropPrefix = Identifier . drop 1 . unIdentifier

@@ -0,0 +1,26 @@+-- Initial casing.cabal generated by cabal init.  For further +-- documentation, see http://haskell.org/cabal/users-guide/++name:                casing+version:             0.1.0.0+synopsis:            Convert between various source code casing conventions+description:         Converts between camelCase, PascalCase, kebab-case, and+                     three flavors of snake_case.+license:             MIT+license-file:        LICENSE+author:              Tobias Dammers+maintainer:          tdammers@gmail.com+-- copyright:           +category:            Text+build-type:          Simple+-- extra-source-files:  +cabal-version:       >=1.10++library+  exposed-modules:     Text.Casing+  -- other-modules:       +  -- other-extensions:    +  build-depends:       base >=4.7 && <5+               ,       split+  -- hs-source-dirs:      +  default-language:    Haskell2010