Cool Powershell Prompt

README.md

Custom Powershell Prompt

Inspired by the fancy ones all your *nix folks use

The easiest way to install it is to notepad $PROFILE and copy the script in. The Prompt function that we just added will be run on the next startup of Powershell. The colors I'm using here are part of the base16 color scheme.

Features

• I used the big blue ribbon to help find my last command after I execute something wall-of-texty
• There's an additional info display when you're in a git directory. It shows the branch name, if the branch has uncommitted changes (the green dot), and if there's pulls or pushes avilable.
• A small symbol will appear next to your name if you're running in Administrator mode

Issues

• The information display for git is kind of slow right now because it's running 3 git commands to figure it out. I need to dig a bit more into git commands and regex-fu to make that a bit faster
• I thought about adding addtional information displays, but my mind was drawing a blank... :/

License

Modify it all you want! Feel free to send me your changes, I'm always interested in seeing improvements to it. If there's any questions, just ask!

Microsoft.PowerShell_profile.ps1

function prompt
{
    # Determine if Powershell is running as Administrator
    $currentPrincipal = New-Object Security.Principal.WindowsPrincipal( [Security.Principal.WindowsIdentity]::GetCurrent() )
    $isAdmin = $currentPrincipal.IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)

    $leftCharCount = 0
    $middleCharCount = 0
    $rightCharCount = 0

    # Grab current git branch
    $isGitRepo = ""
    if(Test-Path .git) {
        $isGitRepo = "yeah"
    }

    # Grab current loaction
    $location = $(get-location).Path;

    Write-Host ("")
    Write-Host (" [ ") -nonewline -foregroundcolor White -backgroundcolor DarkBlue
    $leftCharCount += 3
    Write-Host ([Environment]::UserName) -nonewline -foregroundcolor White -backgroundcolor DarkBlue
    $leftCharCount += [Environment]::UserName.length
    if ($isAdmin) {
        Write-Host ("†") -nonewline -foregroundcolor DarkYellow -backgroundcolor DarkBlue
        $leftCharCount += 1
    }
    Write-Host (" @") -nonewline -foregroundcolor Gray -backgroundcolor DarkBlue
    $leftCharCount += 2
    Write-Host ([System.Net.Dns]::GetHostName()) -nonewline -foregroundcolor White -backgroundcolor DarkBlue
    $leftCharCount += [System.Net.Dns]::GetHostName().length
    Write-Host (" ] ") -nonewline -foregroundcolor White -backgroundcolor DarkBlue
    $leftCharCount += 3
    Write-Host ("▓▓▒▒░░") -nonewline
    $leftCharCount += 6

    if ($isGitRepo) {
        # Grab current branch
        $git_branchName = "";
        git branch | foreach {
            if ($_ -match "^\* (.*)") {
                $git_branchName += $matches[1]
            }
        }

        # Check if workspace has changes
        $git_changes = 0
        $git_changesDisplay = ""
        git status --porcelain | foreach {
            $git_changes++
        }
        if ($git_changes -gt 0) {
            $git_changesDisplay = "•"
        }

        # Check if pushes or pulls available
        $git_pushes = ""
        $git_pulls = ""
        git status -sb | foreach {
            if ($_ -match "ahead (\d+)") {
                $git_pushes = " ↑" + $matches[1]
            }
            if ($_ -match "behind (\d+)") {
                $git_pulls = " ↓" + $matches[1]
            }
        }

        # Calculate length of git display (by making a new string)
        $rightCharCount = "[ Ѱ$($git_changesDisplay) $($git_branchName)$($git_pushes)$($git_pulls) ] ".length

        # Write spaces for padding, so that the display is right-aligned
        $middleCharCount = $ui.WindowSize.Width - $leftCharCount - $rightCharCount
        for ($i=1; $i -le $middleCharCount; $i++)
        {
            Write-Host (" ") -nonewline
        }

        # Actually output the git display
        Write-Host ("[ ") -nonewline
        Write-Host ("Ѱ") -nonewline -foregroundcolor DarkGray
        Write-Host ($git_changesDisplay) -nonewline -foregroundcolor DarkGreen
        Write-Host (" $git_branchName") -nonewline
        Write-Host ("$git_pushes") -nonewline -foregroundColor Green
        Write-Host ("$git_pulls") -nonewline -foregroundColor Red
        Write-Host (" ] ") -nonewline
    } else {
        # No alternate display, just send a newline
        Write-Host ("")
    }

    Write-Host ("»") -nonewline -foregroundcolor DarkGreen
    if ($location -eq "C:\Users\$([Environment]::UserName)") {
        Write-Host ("~\") -nonewline
    } else {
        Write-Host ($location) -nonewline
    }
    Write-Host ("»") -nonewline -foregroundcolor DarkGreen

    return " "
}