taggy-lens-0.1: taggy-lens.cabal

name:          taggy-lens
version:       0.1
synopsis:      Lenses for the taggy html/xml parser
description:
  Lenses, folds, traversals and prisms for
  <http://hackage.haskell.org/package/taggy taggy>.
  .
  This greatly simplifies your life when dealing with
  the ugly world of Real Life HTML. Here's an example
  <https://github.com/alpmestan/taggy-lens/blob/master/example/HackageNew.hs
  from the github repository>: it lists the date, author and package name of
  all the /recent package uploads/ entries from the hackage page of the same name.
  Note that it uses <http://hackage.haskell.org/package/wreq wreq> to /fetch/ the
  Hackage page.
  .
  > {-# LANGUAGE OverloadedStrings #-}
  >
  > module Main (main) where
  >
  > import Control.Lens (to, only,(^?),ix, toListOf)
  > import Data.ByteString.Lazy (ByteString)
  > import Data.Text (Text)
  > import Data.Text.Encoding.Error (lenientDecode)
  > import Data.Text.Lazy.Encoding (decodeUtf8With)
  > import Network.HTTP.Client (Response)
  > import Network.Wreq (responseBody, get)
  > import Text.Taggy (Node)
  > import Text.Taggy.Lens (html, elements, children, contents,allNamed)
  > 
  > data Upload = 
  >   Upload Text -- ^ date
  >          Text -- ^ author
  >          Text -- ^ package name
  >   deriving (Show)
  >
  > table :: [Node] -> Maybe Upload
  > table row = do
  >   date    <- row ^? ix 0 . contents 
  >   author  <- row ^? ix 1 . contents 
  >   package <- row ^? ix 2 . elements . contents 
  >   return $ Upload date author package
  >
  > recentPackages :: Response ByteString -> [Maybe Upload]
  > recentPackages = toListOf 
  >                $ responseBody . to (decodeUtf8With lenientDecode) 
  >                . html . allNamed (only "tr") . children . to table
  >
  > main :: IO ()
  > main = get "https://hackage.haskell.org/packages/recent" >>= print `fmap` recentPackages 
homepage:      http://github.com/alpmestan/taggy-lens
license:       BSD3
license-file:  LICENSE
author:        Alp Mestanogullari, Vikram Verma
maintainer:    alpmestan@gmail.com
copyright:     2014 Alp Mestanogullari, Vikram Verma
category:      Text, Web
build-type:    Simple
cabal-version: >= 1.10

library
  exposed-modules:
    Text.Taggy.Lens
  build-depends:
    base >= 4.5 && < 5,
    lens >= 4,
    taggy >= 0.1,
    text,
    unordered-containers
  hs-source-dirs:
    src
  default-language:
    Haskell2010
  ghc-options:
    -O2 -Wall -fno-warn-orphans

test-suite spec
  type:
    exitcode-stdio-1.0
  hs-source-dirs:
    src,
    test
  main-is:
    Spec.hs
  build-depends:
    base >= 4.5 && < 5,
    taggy,
    text,
    lens >= 4,
    unordered-containers,
    hspec
  default-language:
    Haskell2010
  ghc-options:
    -O2 -Wall -fno-warn-orphans

test-suite doctests
  type:
    exitcode-stdio-1.0
  hs-source-dirs:
    test
  main-is:
    DocTest.hs
  ghc-options:
    -threaded
  build-depends:
    base >= 4.5 && < 5, 
    doctest
  default-language:
    Haskell2010