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Current File : //proc/2/cwd/proc/3/cwd/opt/puppetlabs/puppet/bin/PowershellShim-Helper.ps1

# Based on v 1.7 of the JSON_1.7.psm1 from
#
#  > $Json = Get-Process |
#  >> Select PM, WS, CPU, ID, ProcessName, @{n="SnapshotTime";e={Get-Date}} |
#  >> ConvertTo-Json -NoType
#
#  > $Json | ConvertFrom-json -Type PSObject

try {
  Add-Type -AssemblyName System.ServiceModel.Web, System.Runtime.Serialization -ErrorAction "Stop"
} catch {
  throw "PXP Agent could not load the assemblies needed for JSON parsing. Please install .NET Framework 3.5 or greater, or rewrite the task to use a different input method than 'powershell'."
}

$utf8 = [System.Text.Encoding]::UTF8

function Write-Stream {
  PARAM(
    [Parameter(Position=0)] $stream,
    [Parameter(ValueFromPipeline=$true)] $string
  )
  PROCESS {
    $bytes = $utf8.GetBytes($string)
    $stream.Write( $bytes, 0, $bytes.Length )
  }
}

function Convert-JsonToXml {
  PARAM([Parameter(ValueFromPipeline=$true)] [string[]] $json)
  BEGIN {
    $mStream = New-Object System.IO.MemoryStream
  }
  PROCESS {
    $json | Write-Stream -Stream $mStream
  }
  END {
    $mStream.Position = 0
    try {
      $jsonReader = [System.Runtime.Serialization.Json.JsonReaderWriterFactory]::CreateJsonReader($mStream,[System.Xml.XmlDictionaryReaderQuotas]::Max)
      $xml = New-Object Xml.XmlDocument
      $xml.Load($jsonReader)
      $xml
    } finally {
      $jsonReader.Close()
      $mStream.Dispose()
    }
  }
}

Function ConvertFrom-Xml {
  [CmdletBinding(DefaultParameterSetName="AutoType")]
  PARAM(
    [Parameter(ValueFromPipeline=$true,Mandatory=$true,Position=1)] [Xml.XmlNode] $xml,
    [Parameter(Mandatory=$true,ParameterSetName="ManualType")] [Type] $Type,
    [Switch] $ForceType
  )
  PROCESS{
    if (Get-Member -InputObject $xml -Name root) {
      return $xml.root.Objects | ConvertFrom-Xml
    } elseif (Get-Member -InputObject $xml -Name Objects) {
      return $xml.Objects | ConvertFrom-Xml
    }
    $propbag = @{}
    foreach ($name in Get-Member -InputObject $xml -MemberType Properties | Where-Object{$_.Name -notmatch "^(__.*|type)$"} | Select-Object -ExpandProperty name) {
      Write-Debug "$Name Type: $($xml.$Name.type)" -Debug:$false
      $propbag."$Name" = Convert-Properties $xml."$name"
    }
    if (!$Type -and $xml.HasAttribute("__type")) { $Type = $xml.__Type }
    if ($ForceType -and $Type) {
      try {
        $output = New-Object $Type -Property $propbag
      } catch {
        $output = New-Object PSObject -Property $propbag
        $output.PsTypeNames.Insert(0, $xml.__type)
      }
    } elseif ($propbag.Count -ne 0) {
      $output = New-Object PSObject -Property $propbag
      if ($Type) {
        $output.PsTypeNames.Insert(0, $Type)
      }
    }
    return $output
  }
}

Function Convert-Properties {
  PARAM($InputObject)
  switch ($InputObject.type) {
    "object" {
      return (ConvertFrom-Xml -Xml $InputObject)
    }
    "string" {
      $MightBeADate = $InputObject.get_InnerText() -as [DateTime]
      ## Strings that are actually dates (*grumble* JSON is crap)
      if ($MightBeADate -and $propbag."$Name" -eq $MightBeADate.ToString("G")) {
        return $MightBeADate
      } else {
        return $InputObject.get_InnerText()
      }
    }
    "number" {
      $number = $InputObject.get_InnerText()
      if ($number -eq ($number -as [int])) {
        return $number -as [int]
      } elseif ($number -eq ($number -as [double])) {
        return $number -as [double]
      } else {
        return $number -as [decimal]
      }
    }
    "boolean" {
      return [bool]::parse($InputObject.get_InnerText())
    }
    "null" {
      return $null
    }
    "array" {
      [object[]]$Items = $(foreach( $item in $InputObject.GetEnumerator() ) {
        Convert-Properties $item
      })
      return $Items
    }
    default {
      return $InputObject
    }
  }
}

Function ConvertFrom-Json2 {
  [CmdletBinding()]
  PARAM(
    [Parameter(ValueFromPipeline=$true,Mandatory=$true,Position=1)] [string] $InputObject,
    [Parameter(Mandatory=$true)] [Type] $Type,
    [Switch] $ForceType
  )
  PROCESS {
    $null = $PSBoundParameters.Remove("InputObject")
    [Xml.XmlElement]$xml = (Convert-JsonToXml $InputObject).Root
    if ($xml) {
      if ($xml.Objects) {
        $xml.Objects.Item.GetEnumerator() | ConvertFrom-Xml @PSBoundParameters
      } elseif ($xml.Item -and $xml.Item -isnot [System.Management.Automation.PSParameterizedProperty]) {
        $xml.Item | ConvertFrom-Xml @PSBoundParameters
      } else {
        $xml | ConvertFrom-Xml @PSBoundParameters
      }
    } else {
      Write-Error "Failed to parse JSON with JsonReader" -Debug:$false
    }
  }
}

function ConvertFrom-PSCustomObject
{
  PARAM([Parameter(ValueFromPipeline = $true)] $InputObject)
  PROCESS {
    if ($null -eq $InputObject) { return $null }

    if ($InputObject -is [System.Collections.IEnumerable] -and $InputObject -isnot [string]) {
      $collection = @(
        foreach ($object in $InputObject) { ConvertFrom-PSCustomObject $object }
      )

      $collection
    } elseif ($InputObject -is [System.Management.Automation.PSCustomObject]) {
      $hash = @{}
      foreach ($property in $InputObject.PSObject.Properties) {
        $hash[$property.Name] = ConvertFrom-PSCustomObject $property.Value
      }

      $hash
    } else {
      $InputObject
    }
  }
}

function Get-ContentAsJson
{
  [CmdletBinding()]
  PARAM(
    [Parameter(Mandatory = $true)] $Text,
    [Parameter(Mandatory = $false)] [Text.Encoding] $Encoding = [Text.Encoding]::UTF8
  )

  # using polyfill cmdlet on PS2, so pass type info
  if ($PSVersionTable.PSVersion -lt [Version]'3.0') {
    $Text | ConvertFrom-Json2 -Type PSObject | ConvertFrom-PSCustomObject
  } else {
    $Text | ConvertFrom-Json | ConvertFrom-PSCustomObject
  }
}

function ConvertTo-String
{
  [CmdletBinding()]
  PARAM([Parameter(Mandatory = $True, ValueFromPipeline = $True)] $Object)
  BEGIN {
    $outputs = @()
  }
  PROCESS {
    if ($Object -is [Hashtable]) {
      $outputs += (HashtableTo-String $Object)
    } else {
      $outputs += $Object
    }
  } end {
    $outputs -join "`n"
  }
}

function HashtableTo-String
{
  [CmdletBinding()]
  PARAM([Parameter(Mandatory = $True, ValueFromPipeline = $True)] [Hashtable] $Hashtable)

  ($Hashtable.GetEnumerator() | % { "$($_.Key): $($_.Value)" }) -join "`n"
}

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