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ABOUT_PSCONSOLEHOSTREADLINE
SHORT DESCRIPTION
Explains how to create a customize how PowerShell reads input at the
console prompt.
LONG DESCRIPTION
Starting in Windows PowerShell V3, you can write a function named
PSConsoleHostReadLine that overrides the default way that console input is
processed.
EXAMPLES
The following example launches Notepad and gets input from a text File that
the user creates:
function PSConsoleHostReadLine
{
$inputFile = Join-Path $env:TEMP PSConsoleHostReadLine
Set-Content $inputFile "PS > "
# Notepad opens. Enter your command in it, save the file, and then exit.
notepad $inputFile | Out-Null
$userInput = Get-Content $inputFile
$resultingCommand = $userInput.Replace("PS >", "")
$resultingCommand
}
REMARKS
By default, PowerShell reads input from the console in what is known as
"Cooked Mode" -- in which the Windows console subsystem handles all the
keypresses, F7 menus, and other input. When you press Enter or Tab, Windows
PowerShell gets the text that you have typed up to that point. There is no
way for it to know that you pressed Ctrl-R, Ctrl-A, Ctrl-E, or any other
keys before pressing Enter or Tab. In Windows PowerShell version 3, the
PSConsoleHostReadLine function solves this issue. When you define a
function named PSConsoleHostReadline in the Windows PowerShell console
host, Windows PowerShell calls that function instead of the "Cooked Mode"
input mechanism.
SEE ALSO
about_Prompts