rePS

0.1.0

Exercises/Advanced/adv-xml-setting/exercise.psd1

                                @{

    Id           = 'adv-xml-setting'

    Title        = 'Read XML settings'

    Topic        = 'Advanced'

    Level        = 2

    Platforms    = @('Windows', 'Linux', 'MacOS')

    Tags         = @('xml', 'xpath')

    FunctionName = 'Get-XmlSetting'

    Author       = 'rePS'

    Prompt       = @'

Write Get-XmlSetting so it reads app settings from XML text (-Xml) shaped like

    <configuration>

      <appSettings>

        <add key="Environment" value="Prod" />

      </appSettings>

    </configuration>

and returns the value for -Key, or $null when the key does not exist.

Key matching is case-sensitive (XML is).

    Get-XmlSetting -Xml $text -Key 'Environment'   # Prod

'@

    Hints        = @(

        'Cast the text with [xml]$Xml to get an XmlDocument.'

        'XPath selects nodes: $doc.SelectSingleNode("//appSettings/add[@key=''Environment'']")'

        'The attribute value is on the node: $node.value or $node.GetAttribute(''value'').'

    )

}