Add command to print current version number

Closes #45

Author: subdan

Package.resolved

@@ -12,9 +12,9 @@ let package = Package(
         .executable(name: "figma-export", targets: ["FigmaExport"])
     ],
     dependencies: [
-        .package(url: "https://github.com/apple/swift-argument-parser", from: "0.0.1"),
-        .package(url: "https://github.com/jpsim/Yams.git", from: "3.0.0"),
-        .package(url: "https://github.com/apple/swift-log.git", from: "1.0.0"),
+        .package(url: "https://github.com/apple/swift-argument-parser", from: "0.3.0"),
+        .package(url: "https://github.com/jpsim/Yams.git", from: "4.0.0"),
+        .package(url: "https://github.com/apple/swift-log.git", from: "1.4.0"),
         .package(url: "https://github.com/stencilproject/Stencil.git", from: "0.14.0"),
         .package(url: "https://github.com/tuist/XcodeProj.git", from: "7.14.0")
     ],

Package.swift

@@ -15,8 +15,8 @@ extension FigmaExportCommand {
             abstract: "Exports colors from Figma",
             discussion: "Exports light and dark color palette from Figma to Xcode / Android Studio project")
 
-        @Option(name: .shortAndLong, default: "figma-export.yaml", help: "An input YAML file with figma and platform properties.")
-        var input: String
+        @Option(name: .shortAndLong, help: "An input YAML file with figma and platform properties.")
+        var input: String = "figma-export.yaml"
 
         func run() throws {
             let logger = Logger(label: "com.redmadrobot.figma-export")

Sources/FigmaExport/Subcommands/ExportColors.swift

@@ -15,9 +15,8 @@ extension FigmaExportCommand {
             abstract: "Exports icons from Figma",
             discussion: "Exports icons from Figma to Xcode / Android Studio project")
 
-        @Option(name: .shortAndLong, default: "figma-export.yaml",
-                help: "An input YAML file with figma and platform properties.")
-        var input: String
+        @Option(name: .shortAndLong, help: "An input YAML file with figma and platform properties.")
+        var input: String = "figma-export.yaml"
 
         @Argument(help: """
         [Optional] Name of the icons to export. For example \"ic/24/edit\" \

Sources/FigmaExport/Subcommands/ExportIcons.swift

@@ -15,9 +15,8 @@ extension FigmaExportCommand {
             abstract: "Exports images from Figma",
             discussion: "Exports images from Figma to Xcode / Android Studio project")
 
-        @Option(name: .shortAndLong, default: "figma-export.yaml",
-                help: "An input YAML file with figma and platform properties.")
-        var input: String
+        @Option(name: .shortAndLong, help: "An input YAML file with figma and platform properties.")
+        var input: String = "figma-export.yaml"
 
         @Argument(help: """
         [Optional] Name of the images to export. For example \"img/login\" to export \

Sources/FigmaExport/Subcommands/ExportImages.swift

@@ -15,8 +15,8 @@ extension FigmaExportCommand {
             abstract: "Exports typography from Figma",
             discussion: "Exports font styles from Figma to Xcode")
 
-        @Option(name: .shortAndLong, default: "figma-export.yaml", help: "An input YAML file with figma and platform properties.")
-        var input: String
+        @Option(name: .shortAndLong, help: "An input YAML file with figma and platform properties.")
+        var input: String = "figma-export.yaml"
 
         func run() throws {
             let logger = Logger(label: "com.redmadrobot.figma-export")
@@ -35,7 +35,7 @@ extension FigmaExportCommand {
             let loader = TextStylesLoader(figmaClient: client, params: params.figma)
             let textStyles = try loader.load()
 
-            if let ios = params.ios {//
+            if let ios = params.ios {
                 logger.info("Saving text styles...")
                 try exportXcodeTextStyles(textStyles: textStyles, iosParams: ios, logger: logger)
                 logger.info("Done!")

Sources/FigmaExport/Subcommands/ExportTypography.swift

@@ -0,0 +1,14 @@
+import ArgumentParser
+
+/// Encapsulates `--version` flag behavior.
+struct VersionOptions: ParsableArguments {
+    @Flag(name: .shortAndLong, help: "Print the version and exit")
+    var version: Bool = false
+    
+    func validate() throws {
+        if version {
+            print("0.18.2")
+            throw ExitCode.success
+        }
+    }
+}

Sources/FigmaExport/Subcommands/VersionOptions.swift

@@ -45,6 +45,9 @@ struct FigmaExportCommand: ParsableCommand {
         defaultSubcommand: ExportColors.self
     )
 
+    @OptionGroup()
+    var versionOptions: VersionOptions
+    
 }
 
 FigmaExportCommand.main()