libxls可用来读取xls格式文档。

** cabal configure
** cabal build
** cabal install
** cabal repl --ghc-options=-Llib --ghc-options=-lxlsreader

openBook :: String -> String -> IO WorkBook
            |         |
            xls文档   解码方式(UTF-8 ASCII)

openSheet :: WorkBook -> Int -> IO WorkSheet
                         |
                         sheet号码

getCell :: WorkSheet -> Int -> Int -> IO CellData
                        |      |
                        x      y

showCellInfo :: CellData -> IO ()

更多用法请参考 Bindings.Libxls 和 src/Data/Libxls

** 绑定自libxls c语言库