Swift-创建助手时发现的问题

Swift-Problem discovered when creating a helper

当我尝试为使用 system_profiler 命令检索系统软件和硬件详细信息的应用程序创建助手时,出现以下错误。

Response from XPC service: HELLO XPC
Response from XPC service: /usr/sbin/system_profiler: /usr/sbin/system_profiler: cannot execute binary file"

代码如下。

class CommandHelper: NSObject,CommandHelperProtocol {
  func upperCaseString(_ string: String, withReply reply: @escaping (String) -> Void) {
    let response = string.uppercased()
    reply(response)
  }
  func loadServerURL(_ string: String, withReply reply: @escaping (String) -> Void) {
    let pipe = Pipe()
    let process = Process()
    process.launchPath = "/bin/sh"
    process.arguments = ["system_profiler","SPHardwareDataType"]
    process.standardOutput = pipe
    process.standardError = pipe
    let fileHandle = pipe.fileHandleForReading
    process.launch()
    let response = String(data: fileHandle.readDataToEndOfFile(), encoding: .utf8)

    print(response!)
    reply(response!)
  }
}

当我将 launchPath 设置为 /usr/sbin/system_profiler 时,我得到了空白输出。

Shell 执行脚本,而不是二进制文件。解决方法是直接运行这个工具;几乎没有任何理由启动 shell 只是为了执行一个程序:

process.launchPath = "/usr/sbin/system_profiler"
process.arguments = ["SPHardwareDataType"]

此外,如果您不打算使用它,那么设置 stderr 管道是没有意义的:

/* process.standardError = pipe */