在命令行工具中使用自定义框架时出现错误

Question

我正在尝试基于Stack Overflow答案创建一个快速的框架（我功劳。我正在将其用于个人用途）。在命令行工具中使用它时出现错误。代码中的注释是显示的错误。 我的框架代码：

import Foundation

public func getPass(_ prompt: String) -> String {
        var result = ""
        let buf = [Int8](repeating: 0, count: 8192)
        if let passphrase = readpassphrase("Enter passphrase: ", (UnsafeMutablePointer<Int8>)(mutating: buf), buf.count, 0),
                let passphraseStr = String.init(validatingUTF8: passphrase) {
                result = passphraseStr

        }
        return result
}
public func setColor(_ color: String) {
        let colorDictionary = ["black":"30", "red":"31", "green":"32", "yellow":"33", "blue":"34", "magenta":"35", "cyan":"36","white":"37"]
        let colorResult = colorDictionary[color]
        print("\u{001B}[0;" + colorResult! + "m", terminator: "")
}
public class TerminalProgressBar {
        private var progress : String
        public init(_ input: String) { 
                print(input + "\r", terminator:"")
                fflush(__stdoutp)
                progress = input
        }
        public func setStatus(_ input: String) {
                clearLine()
                print(input + "\r", terminator:"")
                fflush(__stdoutp)
                progress = input
        }
        public func clearLine() {
                var status = ""
                if 2 <= progress.count {
                        for _ in 1...progress.count {
                                status = status + " "
                        }
                } else {
                        status = " "
                }
                print(status + "\r", terminator:"")
                fflush(__stdoutp)
                print("\r", terminator:"")
                fflush(__stdoutp)
        }
        public func restoreLine() {
                clearLine()
                print(progress + "\r", terminator:"")
                fflush(__stdoutp)
        }
        public func endProgress() {
                progress = ""
                print("")
        }
        private func getCount() -> Int {
                return progress.count
        }
}

我的命令行工具代码：

import Foundation
import CommandLine
var progress = TerminalProgressBar("abcdef") // Error: 'TerminalProgressBar' initializer is inaccessible due to 'internal' protection level
sleep(2)
setColor("blue") // Error: Use of unresolved identifier 'setColor'
progress.setStatus("abc")
sleep(3)
progress.clearLine()
sleep(3)
print("a")
print("some console output")
sleep(3)
progress.restoreLine()
sleep(2)
progress.endProgress()

框架类型是可可框架（macOS）。 我测试了框架的项目类型：命令行工具。 库也不起作用。 注意：如果您尝试查找错误，请查看代码中的注释。 如何创建功能框架？