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开源软件名称(OpenSource Name):Gabriella439/Haskell-Optparse-Generic-Library开源软件地址(OpenSource Url):https://github.com/Gabriella439/Haskell-Optparse-Generic-Library开源编程语言(OpenSource Language):Haskell 98.7%开源软件介绍(OpenSource Introduction):optparse-genericUse this library to auto-generate a command-line interface that parses a typed value. This library uses Haskell's support for generic programming to customize the command-line interface to the type of value that you request. For example, the following program: {-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE OverloadedStrings #-}
import Options.Generic
data Example = Example { foo :: Int, bar :: Double } deriving (Generic, Show)
instance ParseRecord Example
main = do
x <- getRecord "Test program"
print (x :: Example) ... will generate a command-line interface that has one flag per field of the record: $ stack build optparse-generic
$ stack runghc Example.hs -- --help
Test program
Usage: Example.hs --foo INT --bar DOUBLE
Available options:
-h,--help Show this help text
$ stack runghc Example.hs -- --foo 1 --bar 2.5
Example {foo = 1, bar = 2.5} This library also provides support out-of-the-box for many existing Haskell types. Try to run this program to see what command-line interface it generates: {-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE OverloadedStrings #-}
import Options.Generic
main = do
x <- getRecord "Test program"
print (x :: Either Double Int) This library tries to be as intelligent as possible:
For the full tutorial, read the Hackage documentation Development statusI expect this library's API to be reasonably stable, but only time will tell.
Most changes will likely be related to adding new built-in support for
existing commonly used data types in the Haskell ecosystem by adding new
LICENSE (BSD 3-Clause)Copyright (c) 2016 Gabriel Gonzalez Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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