Public/ConvertFrom-MemoryStreamToString.ps1

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<#
    .SYNOPSIS
        Converts MemoryStream to a string.
 
    .DESCRIPTION
        Converts MemoryStream to a string.
 
    .PARAMETER MemoryStream
        A MemoryStream object for conversion.
 
    .PARAMETER Stream
        A System.IO.Stream object for conversion.
 
    .EXAMPLE
        $string = 'A string'
        $stream = [System.IO.MemoryStream]::new()
        $writer = [System.IO.StreamWriter]::new($stream)
        $writer.Write($string)
        $writer.Flush()
 
        ConvertFrom-MemoryStreamToString -MemoryStream $stream
 
        A string
 
    .EXAMPLE
        $string = 'A string'
        $stream = [System.IO.MemoryStream]::new()
        $writer = [System.IO.StreamWriter]::new($stream)
        $writer.Write($string)
        $writer.Flush()
 
        $stream | ConvertFrom-MemoryStreamToString
 
        A string
 
    .EXAMPLE
        $string1 = 'A string'
        $stream1 = [System.IO.MemoryStream]::new()
        $writer1 = [System.IO.StreamWriter]::new($stream1)
        $writer1.Write($string1)
        $writer1.Flush()
 
        $string2 = 'Another string'
        $stream2 = [System.IO.MemoryStream]::new()
        $writer2 = [System.IO.StreamWriter]::new($stream2)
        $writer2.Write($string2)
        $writer2.Flush()
 
        ConvertFrom-MemoryStreamToString -MemoryStream $stream1,$stream2
 
        A string
        Another string
 
    .EXAMPLE
        $string1 = 'A string'
        $stream1 = [System.IO.MemoryStream]::new()
        $writer1 = [System.IO.StreamWriter]::new($stream1)
        $writer1.Write($string1)
        $writer1.Flush()
 
        $string2 = 'Another string'
        $stream2 = [System.IO.MemoryStream]::new()
        $writer2 = [System.IO.StreamWriter]::new($stream2)
        $writer2.Write($string2)
        $writer2.Flush()
 
        $stream1,$stream2 | ConvertFrom-MemoryStreamToString
 
        A string
        Another string
 
    .OUTPUTS
        [String[]]
 
    .LINK
        http://convert.readthedocs.io/en/latest/functions/ConvertFrom-MemoryStreamToString/
#>

function ConvertFrom-MemoryStreamToString
{
    [CmdletBinding(HelpUri = 'http://convert.readthedocs.io/en/latest/functions/ConvertFrom-MemoryStreamToString/')]
    [Alias('ConvertFrom-StreamToString')]
    param
    (
        [Parameter(
            Mandatory = $true,
            ValueFromPipeline = $true,
            ValueFromPipelineByPropertyName = $true,
            ParameterSetName = 'MemoryStream')]
        [ValidateNotNullOrEmpty()]
        [System.IO.MemoryStream[]]
        $MemoryStream,

        [Parameter(
            Mandatory = $true,
            ValueFromPipelineByPropertyName = $true,
            ParameterSetName = 'Stream')]
        [ValidateNotNullOrEmpty()]
        [System.IO.Stream[]]
        $Stream
    )

    begin
    {
        $userErrorActionPreference = $ErrorActionPreference
    }

    process
    {
        switch ($PSCmdlet.ParameterSetName)
        {
            'MemoryStream'
            {
                $inputObject = $MemoryStream
            }
            'Stream'
            {
                $inputObject = $Stream
            }
        }

        foreach ($object in $inputObject)
        {
            try
            {
                $reader = [System.IO.StreamReader]::new($object)
                if ($PSCmdlet.ParameterSetName -eq 'MemoryStream')
                {
                    $object.Position = 0
                }
                $reader.ReadToEnd()
            }
            catch
            {
                Write-Error -ErrorRecord $_ -ErrorAction $userErrorActionPreference
            }
            finally
            {
                if ($reader)
                {
                    $reader.Dispose()
                }
            }
        }
    }
}