Change error handling to print message before exiting script (error description will appear in error tab)

Sources/FontToolCore/FontToolError.swift

@@ -13,26 +13,16 @@ enum FontToolError: Error {
     case inputFolderNotFound(String)
     case fileNotExists(String)
     
-    var description: String {
+    var localizedDescription: String {
         switch self {
         case .fcScan(let path, let code, let output):
-            return """
-            error: [FontTool]
-            Error while getting fontName (fc-scan --format %{postscriptname} \(path).
-            fc-scan exit with \(code) and output is: \(output ?? "no output")
-            """
+            return "error:[FontTool] Error while getting fontName (fc-scan --format %{postscriptname} \(path). fc-scan exit with \(code) and output is: \(output ?? "no output")"
             
         case .inputFolderNotFound(let inputFolder):
-            return """
-            error: [FontTool]
-            Input folder not found: \(inputFolder)
-            """
+            return " error:[FontTool] Input folder not found: \(inputFolder)"
             
         case .fileNotExists(let filename):
-            return """
-            error: [FontTool]
-            File \(filename) does not exists
-            """
+            return " error:[FontTool] File \(filename) does not exists "
         }
     }
 }

Sources/FontToolCore/FontToolHelper.swift

@@ -13,7 +13,9 @@ class FontToolHelper {
         // Get a enumerator for all files
         let fileManager = FileManager()
         guard fileManager.fileExists(atPath: inputFolder) else {
-            FontTool.exit(withError: FontToolError.inputFolderNotFound(inputFolder))
+            let error = FontToolError.inputFolderNotFound(inputFolder)
+            print(error.localizedDescription)
+            FontTool.exit(withError: error)
         }
         
         let enumerator: FileManager.DirectoryEnumerator = fileManager.enumerator(atPath: inputFolder)!
@@ -41,7 +43,9 @@ class FontToolHelper {
         let task = Shell.shell("fc-scan", "--format", "%{postscriptname}", path)
         
         guard let fontName = task.output, task.terminationStatus == 0 else {
-            FontTool.exit(withError: FontToolError.fcScan(path, task.terminationStatus, task.output))
+            let error = FontToolError.fcScan(path, task.terminationStatus, task.output)
+            print(error.localizedDescription)
+            FontTool.exit(withError: error)
         }
         
         return fontName

Sources/FontToolCore/main.swift

@@ -41,7 +41,9 @@ struct FontTool: ParsableCommand {
         // Check requirements
         let fileManager = FileManager()
         guard fileManager.fileExists(atPath: inputFile) else {
-            FontTool.exit(withError: FontToolError.fileNotExists(inputFile))
+            let error = FontToolError.fileNotExists(inputFile)
+            print(error.localizedDescription)
+            FontTool.exit(withError: error)
         }
         
         // Check if needed to regenerate