Reads progress information on standard output and displays progress bar

ConvertTo-Progress.ps1

function ConvertTo-Progress {
    [CmdletBinding()]
    param(
        [Parameter(Mandatory,ValueFromPipeline)]
        [ValidateNotNullOrEmpty()]
        [string[]]
        $ProgressText
        ,
        [Parameter()]
        [ValidateNotNullOrEmpty()]
        [int]
        $Id
        ,
        [Parameter()]
        [ValidateNotNullOrEmpty()]
        [int]
        $ParentId
    )

    Process {
        foreach ($Line in $ProgressText) {
            $ProgressParams = @{
                Activity          = '[UNKNOWN_ACTIVITY]'
                CurrentOperation  = '[UNKNOWN_OPERATION]'
                Status            = '[UNKNOWN_STATUS]'
                PercentComplete   = 0
            }
            if ($PSBoundParameters.ContainsKey('Id')) {
                $ProgressParams.Add('Id', $Id)
            }
            if ($PSBoundParameters.ContainsKey('ParentId')) {
                $ProgressParams.Add('ParentId', $ParentId)
            }

            $LineMatched = $false

            if ($Line -imatch 'Id=(\S+)') {
                $ProgressParams['Id'] = $Matches[1]
                $LineMatched = $true
            }
            if ($Line -imatch 'ParentId=(\S+)') {
                $ProgressParams['ParentId'] = $Matches[1]
                $LineMatched = $true
            }
            if ($Line -imatch 'Activity="([^"]+)"') {
                $ProgressParams['Activity'] = $Matches[1]
                $LineMatched = $true
            }
            if ($Line -imatch 'Operation="([^"]+)"') {
                $ProgressParams['CurrentOperation'] = $Matches[1]
                $LineMatched = $true
            }
            if ($Line -imatch 'Status="([^"]+)"') {
                $ProgressParams['Status'] = $Matches[1]
                $LineMatched = $true
            }
            if ($Line -imatch 'Percentage=(\S+)') {
                $ProgressParams['PercentComplete'] = $Matches[1]
                $LineMatched = $true
            }

            if ($LineMatched) {
                Write-Progress @ProgressParams

            } else {
                Write-Output $Line
            }

            Start-Sleep -Seconds 2
        }
    }
}