如何在PowerShell中将定界字符串转换为嵌套哈希表? [英] How can I turn a delimited string into a nested hashtable in PowerShell?

问题描述

我正在努力寻找一种巧妙的方法来将定界的字符串转换为哈希表.例如，给定字符串:

I am struggling to find a neat way to turn a delimited string into a hashtable. For example given the string:

UK_Kent_Margate

我想将其转换为如下所示的PowerShell HashTable:

I want to turn this into a PowerShell HashTable that looks like this:

$result = @{
    UK = @{
        Kent = @{
            Margate = @{}
        }
    }
 }

因此，我可以使用'_'字符的拆分轻松地将字符串拆分成数组，但是随后我在测试并声明结果哈希中的每个嵌套哈希值时都在挣扎(读卡住！).我认为我将需要一个递归函数，这没问题，但是我无法全力以赴如何在结果哈希中测试正确的级别.

So I can easily break the string into an array using a split on the '_' character but then I am struggling (read stuck!) with testing and declaring each of the nested hashes in the results hash. I think I will need a recursive function which is no problem, but I cannot get my head around on how to test the right level in the results hash.

由于我正在编写的应用程序可以具有任意数量的'_'，因此嵌套时，我需要提出一种巧妙的方法来实现此目的，而我却不知道该怎么做.

As the application I am writing could have an arbitrary number of '_' and thus nests I need to come up with a slick way of doing this, and I cannot think of how to do it.

有人以前遇到过这样的事情并有任何建议吗?

Has anyone come across anything like this before and have any recommendations?

推荐答案

也许是这样的事情?

$string = 'UK_Kent_Margate'

$result = @{}

$Parts = $string.split('_') 
0..($parts.count -1) |
foreach {
          iex "`$result.$($parts[0..$_] -join '.') = @{}"
        }

为了帮助您理解它的工作原理，只需删除iex(invoke-expression)，然后让其输出正在创建的字符串即可执行:

To help understand you it works, just remove the iex (invoke-expression), and let it output the strings it's creating to execute:

$string = 'UK_Kent_Margate'

$result = @{}

$Parts = $string.split('_') 
0..($parts.count -1) |
foreach {
          "`$result.$($parts[0..$_] -join '.') = @{}"
        }

$result.UK = @{}
$result.UK.Kent = @{}
$result.UK.Kent.Margate = @{}

这篇关于如何在PowerShell中将定界字符串转换为嵌套哈希表?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！