PSUtil

1.1.5.17

internal/keybindings/expandAlias.ps1

#region Shift+Space : Expand Alias
Set-PSReadlineKeyHandler -Chord (Get-PSFConfigValue -FullName psutil.keybinding.expandalias -Fallback 'Shift+Spacebar') -BriefDescription ExpandAlias -Description "Converts aliases into the resolved command / parameter" -ScriptBlock {
    
    # Get current line(s) of input
    $tokens = $null
    $ast = $null
    $cursor = $null
    [Microsoft.PowerShell.PSConsoleReadLine]::GetBufferState([ref]$ast, [ref]$tokens, [ref]$null, [ref]$cursor)
    
    $changes = @()
    $currentCommand = $null
    foreach ($token in $tokens)
    {
        if (($token.TokenFlags -eq "CommandName") -and ($token.Kind -eq "Identifier"))
        {
            $currentCommand = Get-Command $token.Text -ErrorAction Ignore
            if ($alias = Get-Alias -Name $token.Text -ErrorAction Ignore)
            {
                $currentCommand = $alias.ResolvedCommand
                $changes += New-Object PSObject -Property @{
                    Text   = $alias.ResolvedCommand.Name
                    Start  = $token.Extent.StartOffset
                    Length = $token.Extent.EndOffset - $token.Extent.StartOffset
                }
            }
        }
        
        if (($token.Kind -eq "Parameter") -and ($currentCommand -ne $null))
        {
            if ($currentCommand.Parameters.Keys -contains $token.ParameterName) { }
            else
            {
                $paramhash = @{ }
                foreach ($parameter in $currentCommand.Parameters.Values)
                {
                    $paramhash[$parameter.Name] = $parameter.Name
                    foreach ($a in $parameter.Aliases) { $paramhash[$a] = $parameter.Name }
                }
                
                
                $resolvedParameter = ""
                if ($paramhash.ContainsKey($token.ParameterName)) { $resolvedParameter = $paramhash[$token.ParameterName] }
                else
                {
                    $results = $null
                    $results = $paramhash.Keys | Where-Object { $_ -like "$($token.ParameterName)*" }
                    if ($results)
                    {
                        if (($results | Measure-Object).Count -eq 1)
                        {
                            $resolvedParameter = $paramhash[$results]
                        }
                    }
                }
                
                if ($resolvedParameter -ne "")
                {
                    $changes += New-Object PSObject -Property @{
                        Text    = "-$resolvedParameter"
                        Start   = $token.Extent.StartOffset
                        Length  = $token.Extent.EndOffset - $token.Extent.StartOffset
                    }
                }
            }
        }
    }
    
    $finishedString = ""
    
    if ($changes.Count -eq 0) { return }
    else
    {
        $source = $ast.Extent.Text
        $count = 0
        $index = 0
        
        while ($count -lt $changes.Count)
        {
            if ($changes[$count].Start -gt $index)
            {
                $finishedString += $source.SubString($index, ($changes[$count].Start - $index))
            }
            $finishedString += $changes[$count].Text
            $index = $changes[$count].Start + $changes[$count].Length
            
            $count++
        }
        
        if (($index + 1) -lt $source.Length)
        {
            $finishedString += $source.SubString($index)
        }
    }
    
    [Microsoft.PowerShell.PSConsoleReadLine]::Replace(0, $source.Length, $finishedString, $null, $null)
}
#endregion Shift+Space : Expand Alias