I recently found out that I can create Swift command line scripts.
I decided to see if I could build my Xamarin project using it.
Unfortunately I am getting the following error and I don't know how to fix it.
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'launch path not accessible'
Here is my script:
#!/usr/bin/env swift
import Foundation
print("Building Script")
let fileManager = NSFileManager.defaultManager()
let path = fileManager.currentDirectoryPath
func shell(launchPath: String, arguments: [String] = []) -> NSString? {
let task = NSTask()
task.launchPath = launchPath
task.arguments = arguments
let pipe = NSPipe()
task.standardOutput = pipe
task.launch()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let output = NSString(data: data, encoding: NSUTF8StringEncoding)
return output
}
if let output = shell("/Applications/Xamarin\\ Studio.app/Contents/MacOS/mdtool", arguments: ["-v build", "\"--configuration:Beta|iPhone\"", "MyApp.iOS.sln"]) {
print(output)
}
Any thoughts?
Recently I encounter a similar problem, but my solution is different.
I fix the problem by changing the permission mode of the script. Specifically, chmod 777 xxx
. The key is to give the execution permission.
Let's conduct a controlled experiment to verify it:
prepare a script with path /tmp/a.sh
and permission 666
The content of /tmp/a.sh
:
#!/bin/sh
echo aaa
swift
script to launch the script:import Foundation
let fileManager = FileManager.default
let path = fileManager.currentDirectoryPath
func shell(launchPath: String, arguments: [String] = []) -> NSString? {
let task = Process()
task.launchPath = launchPath
task.arguments = arguments
let pipe = Pipe()
task.standardOutput = pipe
task.launch()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let output = NSString(data: data, encoding: String.Encoding.utf8.rawValue)
return output
}
if let output = shell(launchPath: "/tmp/a.sh", arguments: []) {
print(output)
}
The output is:
... *** Terminating app due to uncaught exception 'NSInvalidArgumentException',
reason: 'launch path not accessible'
/tmp/a.sh
to 777
(by granting the execution permission) and then re-run the swift
script:aaa
I think the problem is that you actually want to execute the shell and have it execute the mdtool, rather than directly execute mdtool
Try passing "/bin/bash" as the launchpath, and then include the path to mdtool as part of the argument string.
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