Clipboard Content Tracker. It's that simple.

paste-log.swift

/**
 *  Prints changed to the pasteboard on screen. Can also be made to run a command with each new string.
 *  Usage: swift paste-log.swift
 *      Prints all new clipboard items on the screen
 *  or   : swift paste-log.swift wget
 *      Runs wget with a newly copied string
 */

import Foundation
import Cocoa

let pasteboard = NSPasteboard.generalPasteboard()
let dateFormatter = NSDateFormatter()
dateFormatter.dateStyle = .ShortStyle
dateFormatter.timeStyle = .LongStyle

let arg: String? = Process.arguments.count > 1 ? Process.arguments.last : nil

func clipboardString() -> String {
    return pasteboard.stringForType(NSPasteboardTypeString) ?? ""
}

var preveousString = clipboardString()

print("Started on \(dateFormatter.stringFromDate(NSDate()))")

if let a = arg {
    print("\u{001B}[1;30mArgument '\(a)' detected. For each copied string the following will be run: `\u{001B}[1;31m\(a) \"<copied string>\"\u{001B}[1;30m`\u{001B}[0m\n")
}

while true {
    
    let newString = clipboardString()
    
    if preveousString != newString {
        
        let dateString = dateFormatter.stringFromDate(NSDate())
        
        print("\n\u{001B}[0;36m ~~~~~ \(dateString) ~~~~~ \u{001B}[0m")
        print(newString)
        
        preveousString = newString

        if let a = arg {
            var command: NSString = "\(a) \"\(newString)\""
            print("\u{001B}[1;30mRunning `\(command)`:\u{001B}[0;37m")
            var rawcommand = command.cStringUsingEncoding(NSUTF8StringEncoding)
            system(rawcommand)
            print("\u{001B}[0m")
        }
    }
    
    NSThread.sleepForTimeInterval(1.0)
}