Minecraft Server Chat Parser

MinecraftChatWatcher.ps1

if ($args.Length -eq 0) {
    Write-Error "Please provide a filename at the command line"
    exit
}

$file = $args[0]
if (-not (Test-Path $file)) {
    Write-Error "File not found: $file"
    exit
}

$ColourMap = @{
    [char]"0" = [System.ConsoleColor]::Black;
    [char]"1" = [System.ConsoleColor]::DarkBlue;
    [char]"2" = [System.ConsoleColor]::DarkGreen;
    [char]"3" = [System.ConsoleColor]::DarkCyan;
    [char]"4" = [System.ConsoleColor]::DarkRed;
    [char]"5" = [System.ConsoleColor]::DarkMagenta;
    [char]"6" = [System.ConsoleColor]::DarkYellow;
    [char]"7" = [System.ConsoleColor]::Gray;
    [char]"8" = [System.ConsoleColor]::DarkGray;
    [char]"9" = [System.ConsoleColor]::Blue;
    [char]"a" = [System.ConsoleColor]::Green;
    [char]"b" = [System.ConsoleColor]::Cyan;
    [char]"c" = [System.ConsoleColor]::Red;
    [char]"d" = [System.ConsoleColor]::Magenta;
    [char]"e" = [System.ConsoleColor]::Yellow;
    [char]"f" = [System.ConsoleColor]::White;
    [char]"r" = [System.ConsoleColor]::White;
}

Get-Content $file -Tail 1 -Wait | 
    Where { $_.Contains("[CHAT]") } |
    foreach {
        $LineTime = ([System.DateTime]::Now.ToString())
        Write-Host -NoNewline "[$LineTime] "

        $Foreground = [System.ConsoleColor]::White
        
        ([string]$_).Substring(([string]$_).IndexOf("[CHAT]") + 7) -split "(§.)" | % {
            $token = [string]$_
            if ($token.StartsWith("§")) {
                $item = $token.Chars(1)
                               
                if ($ColourMap.ContainsKey($item)) {
                    $Foreground = $ColourMap.Get_Item($item)
                }
            } else {
                if ($Foreground -eq $null) {
                    $Foreground = $ColourMap.Get_Item("r");
                }
                Write-Host -ForegroundColor $Foreground -NoNewline $token
            }
        }
        Write-Host 
    }