jbadger3’s gists

jbadger3 / terminus_text_and_color.swift

Created September 9, 2022 17:28

on_command_line_applications_in_swift

	import Terminus

	let terminal = Terminal.shared
	terminal.write("I am bold and underlined.\n", attributes: [.bold, .underline])

	let greenColor = Color(r:0, g:255, b:0)
	terminal.write("Grass is green.\n", attributes: [.color(greenColor)])

	let palette = XTermPalette()
	let blueOneYellow = ColorPair(foreground: palette.Blue1, background: palette.Yellow1)

jbadger3 / terminus_attributed_strings.swift

Created September 9, 2022 17:35

on_command_line_applications_in_swift

	import Foundation
	import Terminus

	let terminal = Terminal.shared

	var attributedString = AttributedString("Hello, bold, underlined, world.")
	if let boldRange = attributedString.range(of: "bold") {
	attributedString[boldRange].terminalTextAttributes = [.bold]
	}
	if let underlinedRange = attributedString.range(of: "underlined") {

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

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 / 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 / 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 / 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 / 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_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.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

Jonathan Badger jbadger3