PowerShell美化prompt

powershell的prompt美化其实有现成的Oh My Posh.而且还可以显示各种git状态.但是这些的前提都是IO很好的情况下.公司电脑由于各种杀毒和安全软件导致IO极差.

根据自己的需要,编写了如下的函数.主要增加一些小 icon 还有提供类似 fish shell 的文件夹缩写显示. 把下面代码加入到你的 profile 里面就可以看看效果了.具体可以根据自己的喜好调整下 icon 内容.

function global:prompt {
	$dateTime = get-date -Format "HH:mm:ss"
	$current = Split-Path -Leaf -Path  $(Get-Location)
	$splitChar = [System.IO.Path]::DirectorySeparatorChar
	$regex = [regex]::Escape($HOME) + "(\\.*)*$"
	$currentDirectory = $(Get-Location).Path -replace $regex , '~$1'
	$folders = $currentDirectory.Split($splitChar, [System.StringSplitOptions]::RemoveEmptyEntries)
	if ($folders.Length -lt 3) {
		# If the path is 0 or 1, then ignore.
	}
	else {
		$firstNameFolders = ForEach ($f in $folders[1..($folders.Length - 2)]) {
			if ($f -match '\d*[-|\.]\d*') {
				$f.Substring(0, 5)
			}
			elseif ($f -match '\d{2,2}\s') {
				$f.Substring(0, 2)
			}
			else {
				$f[0]
			}

		}
		$folders = @($folders[0]) + $firstNameFolders + @($current)
		$currentDirectory = ($folders -join $splitChar)
	}
	$StartSymbol = [char]::ConvertFromUtf32(0x01F984) + [char]::ConvertFromUtf32(0x0001F525) + ''
	$timeSymbol = [char]::ConvertFromUtf32(955)
	$ender = ConvertTo-Emoji 0x1F47B
	$luckleaf = ConvertTo-Emoji 0x1F340
	$preIcon = ConvertTo-Emoji 0x262F
	$prePath = ConvertTo-Emoji 0x1FAA1
	Write-Host "$preIcon$currentDirectory$ender" -f DarkMagenta -NoNewline ; Write-Host "[$dateTime]" -f Green

	Write-Host "$prePath" -f red -nonewline; Write-Host ">" -f red -nonewline; Write-Host ">" -f Yellow -nonewline; Write-Host ">$luckleaf" -f blue -NoNewline;
	return " "
}