PowerShell ScriptBlock 和多种功能 [英] PowerShell ScriptBlock and multiple functions

问题描述

我编写了以下代码:

cls
function GetFoo() { 
    function GetBar() {
        $bar = "bar"
        $bar
    }

    $foo = "foo"
    $bar = GetBar
    $foo
    $bar
}


$cred = Get-Credential "firmwide\srabhi_adm"
$result = Invoke-Command -Credential $cred -ComputerName localhost 
-ScriptBlock ${function:GetFoo}
Write-Host $result[0]
Write-Host $result[1]

它有效，但我不想在 GetFoo 内定义 GetBar.

It works but I don't want to define GetBar inside of GetFoo.

我可以做这样的事情吗?

Can I do something like this?

cls
function GetBar() {
    $bar = "bar"
    $bar
}

function GetFoo() {     
    $foo = "foo"
    $bar = GetBar
    $foo
    $bar
}


$cred = Get-Credential "firmwide\srabhi_adm"
$result = Invoke-Command -Credential $cred -ComputerName localhost 
-ScriptBlock ${function:GetFoo; function:GetBar; call GetFoo}
Write-Host $result[0]
Write-Host $result[1]

基本上，我有选择地将我想要的函数放在 ScriptBlock 中，然后调用其中之一.这样我就不必在函数内部定义函数，我可以通过注入我想成为该 ScriptBlock 一部分的函数来构造 ScriptBlock.

Basically I am selectively putting the functions which I want in the ScriptBlock and then calling one of them. This way I don't have to define function inside of function and I can construct the ScriptBlock by injecting the functions which I want to be a part of that ScriptBlock.

推荐答案

我知道这是一个旧线程，但我希望它对某人有所帮助.

I know this is an old thread, but I hope it helps someone.

[CmdletBinding()]
param()
$barScriptBlock = {
    function GetBar() {
        $bar = "bar"
        $bar
    }
}
$fooScriptBlock = {
    function GetFoo() {     
        $foo = "foo"
        $bar = GetBar
        $foo
        $bar
    }
}
# Concatenate all functions into a script block; add a parameter for extra credit.
$scriptBlockString = @"
param(`$hello)
$($barScriptBlock.ToString())
$($fooScriptBlock.ToString())
`$hello
GetFoo
"@
Write-Verbose $scriptBlockString
# Convert combined string to script block.
$finalScriptBlock = [ScriptBlock]::Create($scriptBlockString)
# Run synchronously, passing runtime parameter.
$result = & $finalScriptBlock "Hola"
# (Async results would not be reiably accessed here yet.)
Write-Host $result[0]
Write-Host $result[1]
Write-Host $result[2]

这篇关于PowerShell ScriptBlock 和多种功能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！