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Monday, June 2, 2014

Get-ASCII

OK, sometimes I really find odd ways to occupy my time.  So, I’m sitting at LAX for a two hour layover and I start working on improving the transcripts that I make while teaching PowerShell.  I’m looking for a separator character for my prompt and discover something amazing.  The ISE has something like 55,291 characters.  Not all of them are displayable.  I’ve found myself trying to get a special ASCII character to many times.  Time to code it.  The help files says it all. I added this to one of my modules so I always have it.

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Function Get-ASCII

{

<#

.SYNOPSIS

Returns an ASCII Character

 

.DESCRIPTION

Returns a single, or multiple standard and non-standard ASCII

characters.

 

.PARAMETER INT

One or more integers, separated by a comma, that you want to return

the ASCII characters for.

 

.PARAMETER List

Allows you to list ASCII characters to the supplied integer or a range of ASCII

characters by specifying a range separated by a comma.

 

.PARAMETER ListAll

This will list all ASCII values from zero to 65535 for the ISE and zero to 2000

for the console.

 

.EXAMPLE

Get-ASCII 60, 72, 81

 

Value Index

----- -----

    <    60

    H    72

    Q    81

 

Returns the ASCII Character for values 60, 72, and 81

 

.EXAMPLE

Get-ASCII 415 | Select-Object -ExpandProperty Value

 

Ɵ

 

Returns the Theta character which is the Theta character in this case.

 

.EXAMPLE

Get-ASCII -List 50

 

List the first 50 ASCII characters.

 

.EXAMPLE

Get-ASCII -List 123-543

 

List all the ASCII Characters from 123 to 543.

 

.EXAMPLE

Get-ASCII -ListAll

 

List all ASCII characters from 0 to 65535.

 

.NOTES

===============================================================================

== Cmdlet: Get-ASCII                                                         ==

== Author: Jason A. Yoder                                                    ==

== Company: MCTExpert of Arizona                                             ==

== Date: June 1, 2014                                                        ==

== Copyright: All rights reserved.                                           ==

== Version: 1.0.0.0                                                          ==

== Legal: The user assumes all responsibility and liability for the usage of ==

== this PowerShell code.  MCTExpert of Arizona, Its officers, shareholders,  ==

== owners, and their relatives are not liable for any damages.  As with all  ==

== code, review it and understand it prior to usage.  It is recommended that ==

== this code be fully tested and validated in a test environment prior to    ==

== usage in a production environment.                                        ==

==                                                                           ==

== Does this code make changes: NO                                           ==

===============================================================================

#>

[CmdletBinding()]

Param(

    [parameter(ParameterSetName="Int",

        Position=0)]

    [ValidateRange(0,65535)]   

    [Int[]]

    $Int,

 

    [parameter(ParameterSetName="ListAll")]

    [Switch]

    $ListAll,

 

    [parameter(ParameterSetName="List")]

    [ValidateCount(1,2)]

    [ValidateRange(0,65535)]

    [Int[]]

    $List

)

    If ($Int)

    {

        ForEach ($I in $Int)

        {

                $Obj = New-Object -TypeName PSObject -Property @{

            'Index' = $I

            'Value' = [Char]$I

            }

            Write-Output $Obj          

        }

    }

    ElseIF ($ListAll)

    {

        # Limit the number of objects returned based on if the

        # code is ran in the console or the ISE.

        $Max = $null

        If ($Host.Name -like "*Console*") {$Max = 2000}

        ElseIf ($Host.Name -like "*ISE*") {$Max = 65535}

       

        For ($X=0;$X-lt $Max;$X++)

        {

            $Obj = New-Object -TypeName PSObject -Property @{

                'Index' = $X

                'Value' = [Char]$X

            }

            Write-Output $Obj

        }

           

    }

    ElseIf ($List.Count -eq 1)

    {

            For ($X=0;$X-lt $List[0];$X++)

        {

            $Obj = New-Object -TypeName PSObject -Property @{

                'Index' = $X

                'Value' = [Char]$X

            }

            Write-Output $Obj

        }           

    }

    ElseIf ($List.Count -eq 2)

    {

            For ($X=$List[0];$X-lt $List[1];$X++)

        {

            $Obj = New-Object -TypeName PSObject -Property @{

                'Index' = $X

                'Value' = [Char]$X

            }

            Write-Output $Obj

        }           

    }

} # End: Function Get-ASCII

 

 

 

 

 

 

 

 

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