writeFileWithStatus() which shows 'Creating' for new, 'Updating' for changed and 'Unchanged' for files that won't change

tesseract/genconf/main.go

@@ -97,6 +97,26 @@ func loadConfig(yamlFile string) Config {
 	return config
 }
 
+func writeFileWithStatus(filename string, content []byte) error {
+	existingContent, err := os.ReadFile(filename)
+	if os.IsNotExist(err) {
+		fmt.Printf("Creating %s\n", filename)
+	} else if err != nil {
+		return fmt.Errorf("failed to read existing file %s: %v", filename, err)
+	} else if string(existingContent) == string(content) {
+		fmt.Printf("Unchanged %s\n", filename)
+		return nil
+	} else {
+		fmt.Printf("Updating %s\n", filename)
+	}
+
+	err = os.WriteFile(filename, content, 0644)
+	if err != nil {
+		return fmt.Errorf("failed to write file %s: %v", filename, err)
+	}
+	return nil
+}
+
 func showHelp() {
 	fmt.Printf("Usage: %s [options] <command>\n\n", os.Args[0])
 	fmt.Printf("Options:\n")