error while run xcodebuild with xcpretty command in swift

Question

To run xcpretty command in xcodebuild, i use the below code:

import Foundation

class Command{

func command(args: String...) -> Int32 {
    let task = NSTask()
    task.launchPath = "/usr/bin/env"
    task.arguments = args
    task.currentDirectoryPath = "/Users/Desktop/XCode/Test/"
    task.launch()
    task.waitUntilExit()
    return task.terminationStatus
}


let xcodebuildCommand = Command()
xcodebuildCommand.command("xcodebuild","test","-project","proj.xcodeproj","-scheme","projScheme","-destination","platform=iOS Simulator,name=iPad Air","  | /usr/local/bin/xcpretty --report html --output /Desktop/test_output/report.html")

the error is

xcodebuild: error: Unknown build action ' | /usr/local/bin/xcpretty --report html --output /Desktop/test_output/report.html'.

the below command run properly from terminal:

xcodebuild test -project proj.xcodeproj.xcodeproj -scheme projScheme -destination 'platform=iOS Simulator,name=iPad Air' | xcpretty --repor html --output /pathToReportfolder/report.html

Answer 1

NSTask is not a shell, it will not interpret your shell script for you.

You'll need to manually set up an NSPipe to connect the standard output of your xcodebuild NSTask to an xcpretty NSTask.

import Foundation

func runCommand(workingDirectory: String? = nil,
                           stdin: NSPipe? = nil,
                          stdout: NSPipe? = nil,
                          stderr: NSPipe? = nil,
                            args: String...) -> Int32 {
    let task = NSTask()

    task.launchPath = "/usr/bin/env"
    task.arguments = args

    if let workingDirectory = workingDirectory {
        task.currentDirectoryPath = workingDirectory
    }

    if let stdin  = stdin  { task.standardInput  = stdin  }
    if let stdout = stdout { task.standardOutput = stdout }
    if let stderr = stderr { task.standardError  = stderr }

    task.launch()
    task.waitUntilExit()
    return (task.terminationStatus)
}

let pipe = NSPipe()

//omit "workingDirectory:" in Swift 2
runCommand(workingDirectory: "/Users/Desktop/XCode/Test/",
                     stdout: pipe,
                       args: "xcodebuild","test",
                       "-project","proj.xcodeproj",
                       "-scheme","projScheme",
                       "-destination","platform=iOS Simulator,name=iPad Air")

//omit "workingDirectory:" in Swift 2
runCommand(workingDirectory: "/Users/Desktop/XCode/Test/",
                      stdin: pipe,
                       args: "/usr/local/bin/xcpretty",
                       "--report html",
                       "--output",
                       "/Desktop/test_output/report.html")