add XcodeGenCLI

Package.resolved

@@ -10,15 +10,6 @@
           "version": "4.3.3"
         }
       },
-      {
-        "package": "Commander",
-        "repositoryURL": "https://github.com/kylef/Commander.git",
-        "state": {
-          "branch": null,
-          "revision": "e5b50ad7b2e91eeb828393e89b03577b16be7db9",
-          "version": "0.8.0"
-        }
-      },
       {
         "package": "JSONUtilities",
         "repositoryURL": "https://github.com/yonaskolb/JSONUtilities.git",
@@ -55,6 +46,15 @@
           "version": "0.9.0"
         }
       },
+      {
+        "package": "SwiftCLI",
+        "repositoryURL": "https://github.com/jakeheis/SwiftCLI.git",
+        "state": {
+          "branch": null,
+          "revision": "37f4a7f863f6fe76ce44fc0023f331eea0089beb",
+          "version": "5.2.0"
+        }
+      },
       {
         "package": "SwiftShell",
         "repositoryURL": "https://github.com/kareman/SwiftShell",

Package.swift

@@ -11,18 +11,23 @@ let package = Package(
     ],
     dependencies: [
         .package(url: "https://github.com/kylef/PathKit.git", from: "0.9.0"),
-        .package(url: "https://github.com/kylef/Commander.git", from: "0.8.0"),
         .package(url: "https://github.com/jpsim/Yams.git", from: "1.0.0"),
         .package(url: "https://github.com/yonaskolb/JSONUtilities.git", from: "4.1.0"),
         .package(url: "https://github.com/kylef/Spectre.git", from: "0.9.0"),
         .package(url: "https://github.com/onevcat/Rainbow.git", from: "3.0.0"),
         .package(url: "https://github.com/tuist/xcodeproj.git", from: "6.3.0"),
+        .package(url: "https://github.com/jakeheis/SwiftCLI.git", from: "5.2.0"),
     ],
     targets: [
         .target(name: "XcodeGen", dependencies: [
+          "XcodeGenCLI",
+        ]),
+        .target(name: "XcodeGenCLI", dependencies: [
           "XcodeGenKit",
-          "Commander",
+          "ProjectSpec",
+          "SwiftCLI",
           "Rainbow",
+          "PathKit",
         ]),
         .target(name: "XcodeGenKit", dependencies: [
           "ProjectSpec",

Sources/XcodeGen/Logger.swift

@@ -1,39 +0,0 @@
-import Foundation
-import Rainbow
-
-struct Logger {
-
-    // MARK: - Properties
-
-    let isQuiet: Bool
-    let isColored: Bool
-
-    // MARK: - Initializers
-
-    init(isQuiet: Bool = false, isColored: Bool = true) {
-        self.isQuiet = isQuiet
-        self.isColored = isColored
-    }
-
-    // MARK: - Logging
-
-    func error(_ message: String) {
-        print(isColored ? message.red : message)
-    }
-
-    func info(_ message: String) {
-        if isQuiet {
-            return
-        }
-
-        print(message)
-    }
-
-    func success(_ message: String) {
-        if isQuiet {
-            return
-        }
-
-        print(isColored ? message.green : message)
-    }
-}

Sources/XcodeGen/main.swift

@@ -1,89 +1,7 @@
-import Commander
 import Foundation
-import JSONUtilities
-import PathKit
 import ProjectSpec
-import XcodeGenKit
-import xcodeproj
+import XcodeGenCLI
 
 let version = try Version("2.0.0")
-
-func generate(spec: String, project: String, isQuiet: Bool, justVersion: Bool) {
-    if justVersion {
-        print(version)
-        exit(EXIT_SUCCESS)
-    }
-
-    let logger = Logger(isQuiet: isQuiet)
-
-    func fatalError(_ message: String) -> Never {
-        logger.error(message)
-        exit(1)
-    }
-
-    let projectSpecPath = Path(spec).absolute()
-    var projectPath = project == "" ? projectSpecPath.parent() : Path(project).absolute()
-
-    if !projectSpecPath.exists {
-        fatalError("No project spec found at \(projectSpecPath.absolute())")
-    }
-
-    let project: Project
-    do {
-        project = try Project(path: projectSpecPath)
-        logger.info("📋  Loaded project:\n  \(project.debugDescription.replacingOccurrences(of: "\n", with: "\n  "))")
-    } catch let error as CustomStringConvertible {
-        fatalError("Parsing project spec failed: \(error)")
-    } catch {
-        fatalError("Parsing project spec failed: \(error.localizedDescription)")
-    }
-
-    do {
-        try project.validateMinimumXcodeGenVersion(version)
-        try project.validate()
-
-        logger.info("⚙️  Generating project...")
-        let projectGenerator = ProjectGenerator(project: project)
-        let xcodeProject = try projectGenerator.generateXcodeProject()
-
-        logger.info("⚙️  Writing project...")
-        let fileWriter = FileWriter(project: project)
-        projectPath = projectPath + "\(project.name).xcodeproj"
-        try fileWriter.writeXcodeProject(xcodeProject, to: projectPath)
-        try fileWriter.writePlists()
-
-        logger.success("💾  Saved project to \(projectPath)")
-    } catch let error as SpecValidationError {
-        fatalError(error.description)
-    } catch {
-        fatalError("Generation failed: \(error.localizedDescription)")
-    }
-}
-
-command(
-    Option<String>(
-        "spec",
-        default: "project.yml",
-        flag: "s",
-        description: "The path to the project spec file"
-    ),
-    Option<String>(
-        "project",
-        default: "",
-        flag: "p",
-        description: "The path to the folder where the project should be generated"
-    ),
-    Flag(
-        "quiet",
-        default: false,
-        flag: "q",
-        description: "Suppress printing of informational and success messages"
-    ),
-    Flag(
-        "version",
-        default: false,
-        flag: "v",
-        description: "Show XcodeGen version"
-    ),
-    generate
-).run(version.description)
+let cli = XcodeGenCLI(version: version)
+cli.execute()

Sources/XcodeGenCLI/Arguments.swift

@@ -0,0 +1,10 @@
+import Foundation
+import PathKit
+import SwiftCLI
+
+extension Path: ConvertibleFromString {
+
+    public static func convert(from: String) -> Path? {
+        return Path(from)
+    }
+}

Sources/XcodeGenCLI/CommandRouter.swift

@@ -0,0 +1,20 @@
+import Foundation
+import SwiftCLI
+
+class CommandRouter: Router {
+
+    let defaultCommand: Command
+
+    init(defaultCommand: Command) {
+        self.defaultCommand = defaultCommand
+    }
+
+    func parse(commandGroup: CommandGroup, arguments: ArgumentList) throws -> (CommandPath, OptionRegistry) {
+        if !arguments.hasNext() {
+            arguments.manipulate { _ in
+                [defaultCommand.name]
+            }
+        }
+        return try DefaultRouter().parse(commandGroup: commandGroup, arguments: arguments)
+    }
+}

Sources/XcodeGenCLI/GenerateCommand.swift

@@ -0,0 +1,85 @@
+import Foundation
+import SwiftCLI
+import PathKit
+import ProjectSpec
+import XcodeGenKit
+import xcodeproj
+
+class GenerateCommand: Command {
+
+    let name: String = "generate"
+    let shortDescription: String = "Generate an Xcode project from a spec"
+
+    let quiet = Flag("-q", "--quiet", description: "Suppress all informational and success output", defaultValue: false)
+
+    let spec = Key<Path>("-s", "--spec", description: "The path to the project spec file. Defaults to project.yml")
+
+    let projectDirectory = Key<Path>("-p", "--project", description: "The path to the directory where the project should be generated. Defaults to the directory the spec is in. The filename is defined in the project spec")
+
+    let version: Version
+
+    init(version: Version) {
+        self.version = version
+    }
+
+    func execute() throws {
+
+        let projectSpecPath = (spec.value ?? "project.yml").absolute()
+
+        let projectDirectory = self.projectDirectory.value?.absolute() ?? projectSpecPath.parent()
+
+        if !projectSpecPath.exists {
+            throw GenerationError.missingProjectSpec(projectSpecPath)
+        }
+
+        let project: Project
+        do {
+            project = try Project(path: projectSpecPath)
+        } catch {
+            throw GenerationError.projectSpecParsingError(error)
+        }
+
+        info("📋  Loaded project:\n  \(project.debugDescription.replacingOccurrences(of: "\n", with: "\n  "))")
+
+        do {
+            try project.validateMinimumXcodeGenVersion(version)
+            try project.validate()
+        } catch let error as SpecValidationError {
+            throw GenerationError.validationError(error)
+        }
+
+        info("⚙️  Generating project...")
+        let xcodeProject: XcodeProj
+        do {
+            let projectGenerator = ProjectGenerator(project: project)
+            xcodeProject = try projectGenerator.generateXcodeProject()
+        } catch {
+            throw GenerationError.generationError(error)
+        }
+
+        info("⚙️  Writing project...")
+        let projectPath = projectDirectory + "\(project.name).xcodeproj"
+        do {
+
+            let fileWriter = FileWriter(project: project)
+            try fileWriter.writeXcodeProject(xcodeProject, to: projectPath)
+            try fileWriter.writePlists()
+        } catch {
+            throw GenerationError.writingError(error)
+        }
+
+        success("💾  Saved project to \(projectPath)")
+    }
+
+    func info(_ string: String) {
+        if !quiet.value {
+            stdout.print(string)
+        }
+    }
+
+    func success(_ string: String) {
+        if !quiet.value {
+            stdout.print(string.green)
+        }
+    }
+}

Sources/XcodeGenCLI/GenerationError.swift

@@ -0,0 +1,36 @@
+import PathKit
+import Foundation
+import ProjectSpec
+import SwiftCLI
+import Rainbow
+
+enum GenerationError: Error, CustomStringConvertible, ProcessError {
+    case missingProjectSpec(Path)
+    case projectSpecParsingError(Error)
+    case validationError(SpecValidationError)
+    case generationError(Error)
+    case writingError(Error)
+
+    var description: String {
+        switch self {
+        case .missingProjectSpec(let path):
+            return "No project spec found at \(path.absolute())"
+        case .projectSpecParsingError(let error):
+            return "Parsing project spec failed: \(error)"
+        case .validationError(let error):
+            return error.description
+        case .generationError(let error):
+            return String(describing: error)
+        case .writingError(let error):
+            return String(describing: error)
+        }
+    }
+
+    var message: String? {
+        return description.red
+    }
+
+    var exitStatus: Int32 {
+        return 1
+    }
+}

Sources/XcodeGenCLI/XcodeGenCLI.swift

@@ -0,0 +1,28 @@
+import Foundation
+import SwiftCLI
+import ProjectSpec
+
+public class XcodeGenCLI {
+
+    let cli: CLI
+
+    public init(version: Version) {
+        let generateCommand = GenerateCommand(version: version)
+        
+        cli = CLI(name: "xcodegen",
+                  version: version.string,
+                  description: "Generates Xcode projects",
+                  commands: [generateCommand])
+        cli.parser = Parser(router: CommandRouter(defaultCommand: generateCommand))
+    }
+
+    public func execute(arguments: [String]? = nil) {
+        let status: Int32
+        if let arguments = arguments {
+            status = cli.go(with: arguments)
+        } else {
+            status = cli.go()
+        }
+        exit(status)
+    }
+}