exit if it has directory problem

Package.swift

@@ -8,14 +8,15 @@ let package = Package(
     dependencies: [
         // Dependencies declare other packages that this package depends on.
         // .package(url: /* package url */, from: "1.0.0"),
-        .package(url: "https://github.com/IngmarStein/CommandLineKit", from: "2.3.0")
+        .package(url: "https://github.com/IngmarStein/CommandLineKit", from: "2.3.0"),
+        .package(url: "https://github.com/kylef/PathKit", from: "1.0.0"),
     ],
     targets: [
         // Targets are the basic building blocks of a package. A target can define a module or a test suite.
         // Targets can depend on other targets in this package, and on products in packages which this package depends on.
         .target(
             name: "clipboard",
-            dependencies: ["CommandLineKit"]),
+            dependencies: ["CommandLineKit", "PathKit"]),
         .testTarget(
             name: "clipboardTests",
             dependencies: ["clipboard"]),

README.md

@@ -13,9 +13,17 @@ $ swift build
 
 ## Usage
 ```shell
-$ ./clipboard
+$ ./clipboard [ -o /path/to/image.png ]
+
+
+$ ./clipboard -h
+Usage: ./clipboard [options]
+  -o, --out:
+      File path you want to save PNG to, default: ./clipboard.png
+  -h, --help:
+      Prints a help message.
 ```
 
 ## TODO
-- [ ] Judge clipboard content
-- [ ] support command line argvs, such as save-dir,  output-name
+- [] Judge clipboard content
+- [X] support command line argvs, such as save-dir,  output-name

Sources/clipboard/main.swift

@@ -8,21 +8,31 @@
 
 import Foundation
 import AppKit
+import PathKit
 import CommandLineKit
 
 class SaveManager{
-
+    let cli = CommandLineKit.CommandLine()
+
     // command line argvs parse
     func argvParse() -> (String) {
-        let cli = CommandLineKit.CommandLine()
+
         let filePath = StringOption(shortFlag: "o",
                                    longFlag: "out",
                                    required: false,
                                    helpMessage: "File path you want to save PNG to, default: ./clipboard.png")
-        cli.addOptions(filePath)
+        let help = BoolOption(shortFlag: "h",
+                              longFlag: "help",
+                              helpMessage: "Prints a help message.")
+        cli.addOptions(filePath, help)
 
         do {
             try cli.parse()
+
+            if help.wasSet && !filePath.wasSet {
+                cli.printUsage()
+                exit(-1)
+            }
             return filePath.value ?? "./clipboard.png"
         } catch {
             cli.printUsage(error)
@@ -59,10 +69,20 @@ class SaveManager{
         // Image PNG
         if let data = pasteboard.data(forType: .png){
             let pngURL = URL(fileURLWithPath: filePath)
+
+            let folderURL = pngURL.deletingLastPathComponent()
+            let path = Path(folderURL.path)
+            if !path.isDirectory {
+                print("\(folderURL.path) not directory.")
+                cli.printUsage()
+                exit(-1)
+            }
+
             do {
                 try data.write(to: pngURL, options: .atomic)
             } catch {
-                print(error)
+                cli.printUsage(error)
+                exit(-1)
             }
             print("File Path: \(pngURL)")
             print("File Type: PNG")
@@ -79,6 +99,7 @@ class SaveManager{
 //        }
 
         print("File Type: not png")
+        cli.printUsage()
         exit(-1)
     }
 }

clipboard.xcodeproj/project.pbxproj

@@ -22,6 +22,7 @@
 
 /* Begin PBXBuildFile section */
 		E01F2FF3242B04DC004B872E /* CommandLineKit in Frameworks */ = {isa = PBXBuildFile; productRef = E01F2FF2242B04DC004B872E /* CommandLineKit */; };
+		E01F2FF6242B22CC004B872E /* PathKit in Frameworks */ = {isa = PBXBuildFile; productRef = E01F2FF5242B22CC004B872E /* PathKit */; };
 		OBJ_24 /* main.swift in Sources */ = {isa = PBXBuildFile; fileRef = OBJ_10 /* main.swift */; };
 		OBJ_31 /* Package.swift in Sources */ = {isa = PBXBuildFile; fileRef = OBJ_6 /* Package.swift */; };
 		OBJ_42 /* XCTestManifests.swift in Sources */ = {isa = PBXBuildFile; fileRef = OBJ_13 /* XCTestManifests.swift */; };
@@ -60,6 +61,7 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 0;
 			files = (
+				E01F2FF6242B22CC004B872E /* PathKit in Frameworks */,
 				E01F2FF3242B04DC004B872E /* CommandLineKit in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -160,6 +162,7 @@
 			name = clipboard;
 			packageProductDependencies = (
 				E01F2FF2242B04DC004B872E /* CommandLineKit */,
+				E01F2FF5242B22CC004B872E /* PathKit */,
 			);
 			productName = clipboard;
 			productReference = "clipboard::clipboard::Product" /* clipboard */;
@@ -201,6 +204,7 @@
 			mainGroup = OBJ_5;
 			packageReferences = (
 				E01F2FF1242B04DC004B872E /* XCRemoteSwiftPackageReference "CommandLineKit" */,
+				E01F2FF4242B22CC004B872E /* XCRemoteSwiftPackageReference "PathKit" */,
 			);
 			productRefGroup = OBJ_15 /* Products */;
 			projectDirPath = "";
@@ -513,6 +517,14 @@
 				minimumVersion = 2.3.0;
 			};
 		};
+		E01F2FF4242B22CC004B872E /* XCRemoteSwiftPackageReference "PathKit" */ = {
+			isa = XCRemoteSwiftPackageReference;
+			repositoryURL = "https://github.com/kylef/PathKit";
+			requirement = {
+				kind = upToNextMajorVersion;
+				minimumVersion = 1.0.0;
+			};
+		};
 /* End XCRemoteSwiftPackageReference section */
 
 /* Begin XCSwiftPackageProductDependency section */
@@ -521,6 +533,11 @@
 			package = E01F2FF1242B04DC004B872E /* XCRemoteSwiftPackageReference "CommandLineKit" */;
 			productName = CommandLineKit;
 		};
+		E01F2FF5242B22CC004B872E /* PathKit */ = {
+			isa = XCSwiftPackageProductDependency;
+			package = E01F2FF4242B22CC004B872E /* XCRemoteSwiftPackageReference "PathKit" */;
+			productName = PathKit;
+		};
 /* End XCSwiftPackageProductDependency section */
 	};
 	rootObject = OBJ_1 /* Project object */;

clipboard.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -9,6 +9,24 @@
           "revision": "688ec349bf793fbdd3562d2e301c189db2f7a655",
           "version": "2.3.0"
         }
+      },
+      {
+        "package": "PathKit",
+        "repositoryURL": "https://github.com/kylef/PathKit",
+        "state": {
+          "branch": null,
+          "revision": "73f8e9dca9b7a3078cb79128217dc8f2e585a511",
+          "version": "1.0.0"
+        }
+      },
+      {
+        "package": "Spectre",
+        "repositoryURL": "https://github.com/kylef/Spectre.git",
+        "state": {
+          "branch": null,
+          "revision": "f14ff47f45642aa5703900980b014c2e9394b6e5",
+          "version": "0.9.0"
+        }
       }
     ]
   },