Useful Powershell profile

Microsoft.PowerShell_profile.ps1

#
# The top three lines are for my oh-my-posh and Terminus. Comment them out if you don't need.
#
# Actions defined:
#   - ls: shorten ls.
#   - open: locate to that directory if provided a directory, open the files if provide 
#           files. the file whose extension is specified in $global:openByNPP will opened
#           by Notepad++ or any other program you set.
#   - cd1, cd2: memorize the current path and change to this path at the next innovation.
#   - sizeof: show the size of a file.
#   - fq, ufq
#
# Author: Ray-Eldath <ray.eldath@outlook.com>. 2019.
#

Invoke-Expression (&starship init powershell)

function listFilesName {
    Get-ChildItem -Name
}

$global:openByNPP = '.ps1', '.psm1', '.java', '.kt', '.scala', '.sc', '.gradle', '.properties', '.gitignore', '.html', '.css', '.less', '.json', '.yml', '.yaml', '.toml', ''
function openFile($path) { 
	if ($global:openByNPP -match [System.IO.Path]::GetExtension($path)) {
		Start-Process notepad++ $path
		echo 'open by Nodepad++'
		return
	}
	echo 'open by default'
	Invoke-Item $path
}

function openFiles {
	if (!(Test-Path -Path $args[0] -PathType leaf)) { # is a folder
		if ($args.length -ne 1) {
			Write-Error -Message "Error: only one path can be supplied when opening a folder." -Category InvalidArgument
		}
		cd $args[0]
		return
	}
	foreach ($e in $args) {
		openFile $e
	}
}

function fileSize() {
	if ($args.length -ne 1) {
		Write-Error -Message "Error: only one path can be supplied." -Category InvalidArgument
	}
	$arg = $args[0]
	if (!(Test-Path -Path $arg -PathType leaf)) { # is a folder
		'is a folder'
		return
	}
	
	$size = [int] (Get-Item $arg).length
	if ($size -gt 1TB) {[string]::Format("{0:0.00} TB", $size / 1TB)}
	elseif ($size -gt 1GB) {[string]::format("{0:0.00} GB", $size / 1GB)}
	elseif ($size -gt 1MB) {[string]::format("{0:0.00} MB", $size / 1MB)}
	elseif ($size -gt 1KB) {[string]::format("{0:0.00} KB", $size / 1KB)}
	elseif ($size -gt 0) {[string]::format("{0:0.00} B", $size)}
	else { "" }
}

$global:unset = "<unset>"
$global:cd1 = '~\Documents\Powershell\.cd1'
$global:cd2 = $unset
function markDic1 {
	if ($args.length -gt 1) {
		Write-Error -Message "Error: only one argument can be sup." -Category InvalidArgument
	}
	if ($args[0] -eq "clear" -OR $args[0] -eq 'c') {
		Remove-Item -Path $global:cd1
		echo "file ${cd1} deleted."
		return
	}
	if (Test-Path $global:cd1) {
		$path = Get-Content -Path $global:cd1
		cd $path
		echo "cd by ${cd1} (${path})."
	} else {
		New-Item -Path $global:cd1 -ItemType File | Out-Null
		$path = (Get-Location).Path
		$path | Out-File -FilePath $global:cd1
		"write ${path} into ${cd1}."
	}
}

function markDic2 {
	if ($args.length -gt 1) {
		Write-Error -Message "Error: only one argument can be sup." -Category InvalidArgument
	}
	if ($args[0] -eq "clear" -OR $args[0] -eq 'c') {
		$global:cd2 = $global:unset
		echo 'cd2 cleared'
		return
	}
	if ($global:cd2 -eq $global:unset) {
		$global:cd2 = (Get-Location).Path
		'set cd2 to ' + $global:cd2
	} else {
		cd $global:cd2
		echo 'cd by cd2 (' + $global:cd2 + ')'
	}
}

function touchAndOpen {
	touch $args[0]
	open $args[0]
}

function setProxies {
	$proxy = "http://127.0.0.1:1080"
	$env:http_proxy = $proxy
	$env:https_proxy = $proxy
	$env:all_proxy = $proxy
}

function unsetProxies {
	Remove-Item Env:\http_proxy
	Remove-Item Env:\https_proxy
	Remove-Item Env:\all_proxy
}

Remove-Item alias:\ls
Remove-Item alias:\rm

Set-Alias sizeof fileSize
Set-Alias ls listFilesName
Set-Alias open openFiles
Set-Alias cd1 markDic1
Set-Alias cd2 markDic2
Set-Alias to touchAndOpen
Set-Alias fq setProxies
Set-Alias ufq unsetProxies