Jonathan Badger jbadger3

jbadger3 / PipeExample.swift

Created November 29, 2022 22:54

Example of piping together commands in swift.

	#!/usr/bin/swift
	import Foundation

	let catProcess = Process()
	catProcess.executableURL = URL(fileURLWithPath: "/bin/cat")
	catProcess.arguments = ["PipeExample.swift"]

	let pipe1 = Pipe()

	let grepProcess = Process()

jbadger3 / countdown.swift

Created November 29, 2022 21:56

A swift script used to demonstrate stream buffering and flushing

	#!/usr/bin/swift

	import Foundation

	let arguments = CommandLine.arguments

	let startingValue = Int(arguments[1])!

	var flush = false
	if arguments.count == 3 {

jbadger3 / readabilityHandler.swift

Created November 29, 2022 21:22

Demo using readabilityHandler to read data asynchronously from FileHandle

	import Foundation

	let outputPipe = Pipe()

	let process = Process()
	process.executableURL = URL(fileURLWithPath:"/bin/bash")
	process.arguments = ["-c", "ls"]
	process.standardOutput = outputPipe

	outputPipe.fileHandleForReading.readabilityHandler = { fileHandle in

jbadger3 / FileHandle_async-await.swift

Created November 29, 2022 20:42

Demo using async-await to read from a FileHandle

	import Foundation

	let outputPipe = Pipe()

	let process = Process()
	process.executableURL = URL(fileURLWithPath:"/bin/bash")
	process.arguments = ["-c", "ls"]
	process.standardOutput = outputPipe

	try? process.run()

jbadger3 / readabilityHandler_noEOFCheck.swift

Last active November 29, 2022 21:04

FileHandle readability handler demo with no EOF check

	import Foundation

	let outputPipe = Pipe()

	let process = Process()
	process.executableURL = URL(fileURLWithPath:"/bin/bash")
	process.arguments = ["-c", "ls"]
	process.standardOutput = outputPipe

	outputPipe.fileHandleForReading.readabilityHandler = { fileHandle in

jbadger3 / FileHandle_bytes.swift

Created November 29, 2022 19:08

Use of async-await for reading data from a FileHandle

	for try await line in FileHandle.standardOutput.bytes.lines {
	///Do something with output
	}

jbadger3 / sub_process.swift

Created November 28, 2022 19:57

Example of creating a subprocess in Swift.

	import Foundation

	let process = Process()
	process.executableURL = URL(fileURLWithPath:"/bin/bash")
	process.arguments = ["-c", "ls"]

	try? process.run()
	let standardInputFH = process.standardInput as! FileHandle
	let standardOutputFH = process.standardOutput as! FileHandle
	let standardErrorFH = process.standardError as! FileHandle

jbadger3 / ProcessInfo.swift

Created November 27, 2022 01:01

Getting process information and file descriptors in Swift

	import Foundation

	let processInfo = ProcessInfo()
	print("COMMAND: \(processInfo.processName)")
	print("PID: \(processInfo.processIdentifier)")
	print("USER \(processInfo.userName)")
	print("stdin FD: \(FileHandle.standardInput.fileDescriptor)")
	print("stdout FD: \(FileHandle.standardOutput.fileDescriptor)")
	print("stderr FD: \(FileHandle.standardError.fileDescriptor)")

jbadger3 / line_edit_demo.swift

Created September 9, 2022 18:07

on_command_line_applications_in_swift

	import Terminus

	let terminal = Terminal.shared
	let lineEditor = LineEditor()

	lineEditor.bufferHandler = {
	var shouldWriteBuffer = false
	if let greenRange = lineEditor.buffer.range(of: "green") {
	lineEditor.buffer[greenRange].terminalTextAttributes = [.color(Color(r: 0, g: 255, b: 0))]
	shouldWriteBuffer = true

jbadger3 / terminus_menu.swift

Created September 9, 2022 17:58

on_command_line_applications_in_swift

	import Foundation
	import Terminus

	let terminal = Terminal.shared

	terminal.clearScreen()
	terminal.cursor.moveToHome()

	let palette = XTermPalette()
	let itemColor = palette.Aquamarine2