A small menubar app that allows you to switch between R versions quickly (if you have multiple versions of R framework installed). https://rud.is/rswitch
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//
// Associations.swift
// RSwitch
//
// Created by hrbrmstr on 2/11/20.
// Copyright © 2020 Bob Rudis. All rights reserved.
//
import Foundation
import AppKit
import ApplicationServices
class FileAssociationUtils {
public static func getHandlers() {
let workspace = NSWorkspace.shared;
let setResR : String = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, "R" as CFString, nil)?.takeRetainedValue() as String? ?? "";
NSLog("UTI of .R extension: " + setResR);
let handlerR : String = LSCopyDefaultRoleHandlerForContentType(setResR as CFString, LSRolesMask.all)?.takeRetainedValue() as String? ?? "";
NSLog("Bundle ID of handler for .R files is: [" + handlerR + "]");
let rAppUrl : URL = (workspace.urlForApplication(withBundleIdentifier: handlerR))!.appendingPathComponent("Contents/Info.plist");
NSLog("The Info.plist for the app that handles .R files is: " + rAppUrl.absoluteString);
let rAppDict : NSDictionary = NSDictionary(contentsOf: rAppUrl)!;
NSLog("The name of the app that handles .R files is: " + (rAppDict.object(forKey: "CFBundleName") as! String));
let setResRmd : String = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, "Rmd" as CFString, nil)?.takeRetainedValue() as String? ?? "";
NSLog("UTI of .Rmd extension: " + setResRmd);
let handlerRmd : String = LSCopyDefaultRoleHandlerForContentType(setResRmd as CFString, LSRolesMask.all)?.takeRetainedValue() as String? ?? "";
NSLog("Bundle ID of handler for .Rmd files is: [" + handlerRmd + "]");
let rmdAppUrl : URL = (workspace.urlForApplication(withBundleIdentifier: handlerRmd))!.appendingPathComponent("Contents/Info.plist");
NSLog("The Info.plist for the app that handles .Rmd files is: " + rmdAppUrl.absoluteString);
let rmdAppDict : NSDictionary = NSDictionary(contentsOf: rmdAppUrl)!;
NSLog("The name of the app that handles .Rmd files is: " + (rmdAppDict.object(forKey: "CFBundleName") as! String));
}
public static func setHandlers() {
let setResR : String = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, "R" as CFString, nil)?.takeRetainedValue() as String? ?? "";
NSLog("UTI of .R extension: " + setResR);
LSSetDefaultRoleHandlerForContentType(setResR as CFString, LSRolesMask.all, "org.rstudio.RStudio" as CFString);
let setResRmd : String = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, "Rmd" as CFString, nil)?.takeRetainedValue() as String? ?? "";
NSLog("UTI of .Rmd extension: " + setResRmd);
LSSetDefaultRoleHandlerForContentType(setResRmd as CFString, LSRolesMask.all, "org.rstudio.RStudio" as CFString);
}
}