cli implementation completed

Package.swift

@@ -17,7 +17,7 @@ let package = Package(
         .package(url: "https://github.com/johnsundell/shellout.git", from: "2.0.0"),
         .package(url: "https://github.com/JohnSundell/Files", from: "4.0.0"),
         .package(url: "https://github.com/jpsim/Yams.git", from: "2.0.0"),
-        .package(url: "https://github.com/apple/swift-tools-support-core.git", from: "0.0.1"),
+        .package(url: "https://github.com/apple/swift-tools-support-core.git", from: "0.0.0"),
         .package(url: "https://github.com/apple/swift-log.git", from: "1.0.0")
     ],
     targets: [
@@ -30,7 +30,7 @@ let package = Package(
         .target(
             name: "TerminalLog",
             dependencies: [
-                "Logging", "SwiftToolsSupport-auto"
+                "Logging"
             ]
         ),
         .target(

Sources/TerminalLog/ASCIIColor.swift

@@ -0,0 +1,25 @@
+//
+//  ASCIIColor.swift
+//  
+//
+//  Created by Julian Kahnert on 16.01.20.
+//
+// Source: https://stackoverflow.com/a/56510700/10026834
+
+enum ASCIIColor: String {
+    case black = "\u{001B}[0;30m"
+    case red = "\u{001B}[0;31m"
+    case green = "\u{001B}[0;32m"
+    case yellow = "\u{001B}[0;33m"
+    case blue = "\u{001B}[0;34m"
+    case magenta = "\u{001B}[0;35m"
+    case cyan = "\u{001B}[0;36m"
+    case white = "\u{001B}[0;37m"
+    case `default` = "\u{001B}[0;0m"
+}
+
+extension DefaultStringInterpolation {
+    mutating func appendInterpolation<T: CustomStringConvertible>(_ value: T, color: ASCIIColor) {
+        appendInterpolation("\(color.rawValue)\(value)\(ASCIIColor.default.rawValue)")
+    }
+}

Sources/TerminalLog/TerminalLog.swift

@@ -7,7 +7,6 @@
 // Source: https://github.com/chrisaljoudi/swift-log-oslog
 
 import Logging
-import TSCBasic
 
 public struct TerminalLog: LogHandler {
 
@@ -19,12 +18,8 @@ public struct TerminalLog: LogHandler {
     public var logLevel: Logger.Level = .info
 
     private var prettyMetadata: String?
-    private let terminalController: TerminalController
 
-    public init(_: String) {
-        guard let tc = TerminalController(stream: stdoutStream) else { fatalError("Could not create an instance of TerminalController.") }
-        self.terminalController = tc
-    }
+    public init(_: String) { }
 
     public func log(level: Logger.Level, message: Logger.Message, metadata: Logger.Metadata?, file: String, function: String, line: UInt) {
 
@@ -42,7 +37,7 @@ public struct TerminalLog: LogHandler {
             formedMessage += " -- " + combinedPrettyMetadata!
         }
 
-        terminalController.write(formedMessage + "\n", inColor: getColor(for: level))
+        print("\(formedMessage, color: getColor(for: level))\n")
     }
 
     /// Add, remove, or change the logging metadata.
@@ -66,8 +61,8 @@ public struct TerminalLog: LogHandler {
         }.joined(separator: " ")
     }
 
-    private func getColor(for level: Logger.Level) -> TerminalController.Color {
-        let color: TerminalController.Color
+    private func getColor(for level: Logger.Level) -> ASCIIColor {
+        let color: ASCIIColor
         switch level {
         case .critical, .error:
             color = .red
@@ -76,7 +71,7 @@ public struct TerminalLog: LogHandler {
         case .info:
             color = .green
         default:
-            color = .noColor
+            color = .default
         }
         return color
     }