67 lines
2.1 KiB
PowerShell
67 lines
2.1 KiB
PowerShell
function Get-AppSettingPrivateJson {
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<#
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.SYNOPSIS
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Returns an appSetting value from the specified file content
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.DESCRIPTION
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Returns an appSetting value from the specified file content
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.PARAMETER Key
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[string] The name of the key to get the value from, if it exists.
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.PARAMETER FileContent
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[string] The file content to parse
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.PARAMETER SuppressWarnings
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[switch] Suppress warnings about keys not found
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.OUTPUTS
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Can return $null if key not found
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#>
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[CmdletBinding()]
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param (
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[string]$Key,
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[string]$FileContent,
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[switch]$SuppressWarnings
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)
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$logLead = (Get-LogLeadName)
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$json = (ConvertFrom-Json -InputObject $FileContent)
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# appsettings.json has a magic trick for us
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# if I specify Parent:Child then I'm looking for something like
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# { "Parent": { "Child": value } }
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# if I specify Parent.Child then I'm looking for something like
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# { "Parent.Child": value }
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# So we want to be able to do a depth search by the colon'd parts
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$keyNodeList = $Key.Split(':')
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if (Test-IsCollectionNullOrEmpty $keyNodeList) {
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throw "$logLead : For config file [$FilePath] - No valid key specified - Can not continue. Key was [$Key]"
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}
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foreach($node in $keyNodeList) {
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if ([string]::IsNullOrWhiteSpace($node)) {
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throw "$logLead : For config file [$FilePath] - Found invalid node element [$node] in Key path [$Key]"
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}
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}
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$lastNode = "<root>"
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$tempNode = $json
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foreach($node in $keyNodeList) {
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Write-Verbose "$logLead : Checking `$tempNode [$tempNode] for property `$node [$node]"
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if (($node -eq $keyNodeList[-1]) -or ($null -eq $tempNode.$node)) {
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if ($null -eq $tempNode.$node) {
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if ($SuppressWarnings) {
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Write-Verbose "$logLead : Can not find [$node] of [$Key] for element under [$lastNode]. Returning `$null"
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} else {
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Write-Warning "$logLead : Can not find [$node] of [$Key] for element under [$lastNode]. Returning `$null"
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}
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}
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return $tempNode.$node
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}
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$tempNode = $tempNode.$node
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$lastNode = $node
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}
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} |