AL/Get-AppKeyValue.ps1
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<# .Synopsis Retrieves a value from the app.json .Description Retrieves a value from the app.json of the project .Parameter SourcePath Path to the current project .Parameter KeyName Name of the key the value should be retrieved from .Example $value = Get-AppKeyValue -SourcePath "C:\Install" -KeyName "publisher" #> function Get-AppKeyValue { Param( [Parameter(Mandatory=$false)] [string]$SourcePath = (Get-Location), [Parameter(Mandatory=$true)] [string]$KeyName ) if (!(Test-Path (Join-Path $SourcePath 'app.json') -PathType Leaf)) { switch ($KeyName) { 'publisher' { return (Import-Config).publisher } default { return '' } } } $JsonContent = Get-Content (Join-Path $SourcePath 'app.json') -Raw $Json = ConvertFrom-Json $JsonContent try { if ($null -ne $Json.PSObject.Properties.Item($KeyName)) { return $Json.PSObject.Properties.Item($KeyName).Value } else { return '' } } catch { throw "Could not find $KeyName in app.json" } } |