下面是一个使用我的函数Set-TreeValue的解决方案，在对原始数据进行了一些预处理之后：

# Create sample input

$a = @'
override['abc_os_config']['local_administrators']['default_administrators']['abc.com'] = %w {}
override['abc_os_config']['local_administrators']['default_administrators']['devad.abc.com'] = %w {}
override['abc_os_config']['local_administrators']['default_administrators']['qad.abc.com'] = %w {}
override['CIS_Remediation_Windows']['security_options']['lanman_authentication_level'] = 3
'@ 

# Split input text into an array of lines

$textLines = $a -split '\r?\n'

# Create an ordered hashtable

$result = [ordered] @{}

foreach( $line in $textLines ) {
    # Split current line into path and value
    $path, $value = $line -split "'\]\s*=\s*"

    # Remove unwanted stuff from the path
    $path = $path -replace "override\['"

    # Add current value to the tree, creating any nested hashtables as necessary
    Set-TreeValue -HashTable $result -Path $path -Value $value -PathSeparator "'\]\['"
}

# Specify a large enough depth as default value of 2 would skip deeper nested data

$result | ConvertTo-Json -Depth 99

输出：

{
  "abc_os_config": {
    "local_administrators": {
      "default_administrators": {
        "abc.com": "%w {}",
        "devad.abc.com": "%w {}",
        "qad.abc.com": "%w {}"
      }
    }
  },
  "CIS_Remediation_Windows": {
    "security_options": {
      "lanman_authentication_level": "3"
    }
  }
}

每行处理方式：

例如乘这条线

override['abc_os_config']['local_administrators']['default_administrators']['abc.com'] = %w {}

• 将当前行拆分为路径和值：

$path = "override['abc_os_config']['local_administrators']['default_administrators']['abc.com"
$value = "%w {}"

• 从路径中删除不需要的内容：

$path = "abc_os_config']['local_administrators']['default_administrators']['abc.com"

• 在Set-TreeValue中：
• 将路径拆分成组件，使用']['作为分隔符(反斜杠转义，因为函数需要RegEx)

abc_os_config
local_administrators
default_administrators
abc.com

• 创建任何嵌套的哈希表并赋值