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Enable tab completion for ssh hostnames in PowerShell
using namespace System.Management.Automation
Register-ArgumentCompleter -CommandName ssh,scp,sftp -Native -ScriptBlock {
param($wordToComplete, $commandAst, $cursorPosition)
$knownHosts = Get-Content ${Env:HOMEPATH}\.ssh\known_hosts `
| ForEach-Object { ([string]$_).Split(' ')[0] } `
| ForEach-Object { $_.Split(',') } `
| Sort-Object -Unique
# For now just assume it's a hostname.
$textToComplete = $wordToComplete
$generateCompletionText = {
param($x)
$x
}
if ($wordToComplete -match "^(?<user>[-\w/\\]+)@(?<host>[-.\w]+)$") {
$textToComplete = $Matches["host"]
$generateCompletionText = {
param($hostname)
$Matches["user"] + "@" + $hostname
}
}
$knownHosts `
| Where-Object { $_ -like "${textToComplete}*" } `
| ForEach-Object { [CompletionResult]::new((&$generateCompletionText($_)), $_, [CompletionResultType]::ParameterValue, $_) }
}
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