cmdArgs bash完成

问题描述

Haskell的提供命令选项解析。

根据此页面从文档及其来源

它似乎能够支持bash完成，但我无法使用Implicit版本的解析器。

是否有人有没有这样做的例子？

编辑添加了一个更好的例子

如果我有程序

  { - ＃LANGUAGE DeriveDataTypeable＃ - } 
 import System.Console.CmdArgs 
 
 data Sample =示例{hello :: String} 
 deriving（Show，Data，Typeable）
 
 sample = Sample {hello = def} 
 
 main = print =<<< ; cmdArgs示例
  

分析以下选项

<$示例程序

示例[选项]

常用标志：
-h --hello = ITEM
- ？ --help显示帮助信息
-V --version打印版本信息

如何使用cmdArgs的bash完成特性？

解决方案

要使用bash完成，请将上面的程序编译为 sample ，在 $ PATH 上放置 sample ，然后运行：

  sample --help = bash> sample.comp 
 source sample.comp 
  

您现在可以输入 sample --ver ，按Tab键，它会完成到 sample --version 。

完成时有一些不足之处，尤其是程序必须位于 $ PATH 中，如果您在Windows上，则需要运行 sample.comp 到 dos2unix 。它也完全没有记录，它应该由软件包作者修复。

The cmdArgs package for Haskell provide command option parsing.

based on this page from the docs http://hackage.haskell.org/packages/archive/cmdargs/0.10.3/doc/html/System-Console-CmdArgs-Explicit.html#g:4 and its source http://hackage.haskell.org/packages/archive/cmdargs/0.10.3/doc/html/src/System-Console-CmdArgs-Explicit-Complete.html#Complete

It seem able to support bash completion, but I was not able to made it work with the Implicit version of the parser. http://hackage.haskell.org/packages/archive/cmdargs/0.10.3/doc/html/System-Console-CmdArgs-Implicit.html

Does any one have any example of doing this?

Edit added a better example

if I have the program

{-# LANGUAGE DeriveDataTypeable #-}
import System.Console.CmdArgs

data Sample = Sample {hello :: String}
              deriving (Show, Data, Typeable)

sample = Sample{hello = def}

main = print =<< cmdArgs sample

with parses the following options

The sample program

sample [OPTIONS]

Common flags:
  -h --hello=ITEM
  -? --help        Display help message
  -V --version     Print version information

how do use the bash completion feature of cmdArgs?

解决方案

To use the bash completion, compile the above program as sample, place sample on your $PATH then run:

sample --help=bash > sample.comp
source sample.comp

You can now type in sample --ver, press tab, and it will complete to sample --version.

There are a couple of infelicities in the completion, in particular the program must be on your $PATH and if you are on Windows you need to run sample.comp through dos2unix. It is also entirely undocumented, which sHould be fixed by the package author.

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