I'm opening a different thread to a question that was asked about a year ago. I'm trying to get the output of "which" so that I can automatically find programs for the user. I've used the code that was provided in that thread which is:
func launch(tool: URL, arguments: [String], completionHandler: @escaping (Int32, Data) -> Void) throws {
let group = DispatchGroup()
let pipe = Pipe()
var standardOutData = Data()
group.enter()
let proc = Process()
proc.executableURL = tool
proc.arguments = arguments
proc.standardOutput = pipe.fileHandleForWriting
proc.terminationHandler = { _ in
proc.terminationHandler = nil
group.leave()
}
group.enter()
DispatchQueue.global().async {
// Doing long-running synchronous I/O on a global concurrent queue block
// is less than ideal, but I’ve convinced myself that it’s acceptable
// given the target ‘market’ for this code.
let data = pipe.fileHandleForReading.readDataToEndOfFile()
pipe.fileHandleForReading.closeFile()
DispatchQueue.main.async {
standardOutData = data
group.leave()
}
}
group.notify(queue: .main) {
completionHandler(proc.terminationStatus, standardOutData)
}
try proc.run()
// We have to close our reference to the write side of the pipe so that the
// termination of the child process triggers EOF on the read side.
pipe.fileHandleForWriting.closeFile()
}
it works fine for all of the normal command line routines but not for custom ones such as avr-gcc or any other that is installed via homebrew. I can use "which avr-gcc" in terminal and it shows the path just fine but in my app it returns nothing where as if I search for the path of something like ls in my app it returns it just fine. What could be the cause of this?
