When you run it with absolute paths for the 'swift' and 'python' executables,
does it work then?
Alex
> On 9 Jan 2017, at 06:20, Mr Bee via swift-users <swift-users@swift.org> wrote:
>
> Hi,
>
> I'm writing a simple editor on Linux for Swift language. I use Task (was
> NSTask) to run the Swift REPL. Unfortunately, Task failed to execute the
> Swift REPL for no obvious reasons. The Swift compiler and REPL are installed
> just fine and able to execute any Swift codes. However, my exact same code
> has no problem to run bash commands.
>
> Here's the code:
> _____
>
> import Foundation
>
> extension Task {
> func execute(command: String, currentDir: String = "~", arguments: [String]
> = [], input: String = "") -> String {
> if !input.isEmpty {
> let pipeIn = Pipe()
> self.standardInput = pipeIn
> // multiple inputs are separated by newline
> if let input = input.data(using: String.Encoding.utf8) {
> pipeIn.fileHandleForWriting.write(input)
> }
> }
>
> let pipeOut = Pipe()
> self.standardOutput = pipeOut
>
> self.arguments = arguments
> self.launchPath = command
> self.currentDirectoryPath = currentDir
>
> self.launch()
> let output = pipeOut.fileHandleForReading.readDataToEndOfFile()
> self.waitUntilExit()
>
> return String(data: output, encoding: String.Encoding(rawValue:
> String.Encoding.utf8.rawValue))!
> }
> }
>
> print(Task().execute(command: "swift", arguments: ["test.swift"])) // <-
> FAILED
> // print(Task().execute(command: "python", arguments: ["test.py"])) // <-
> FAILED
> // print(Task().execute(command: "/bin/ls", arguments: ["-l"])) // <- OK
>
> _____
>
> The test code is just a simple hello world program, nothing fancy. Can
> anybody here enlighten me what did I wrong with the code? I'm using Swift
> v.3.0 on Ubuntu Linux 14.04.
>
> Thank you.
>
> Regards,
>
>
> –Mr Bee
>
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