improving windows compatability

spitfire/upload.go

@@ -26,16 +26,24 @@ type Config struct {
 func LoadConfig() (*Config, error) {
 	file, err := os.Open("sourceforge_config.json") // Assuming a JSON config file
 	if err != nil {
-		return nil, err
+		return nil, fmt.Errorf("failed to open config file: %v", err)
 	}
 	defer file.Close()
 
 	config := &Config{}
 	if err := json.NewDecoder(file).Decode(config); err != nil {
-		return nil, err
+		return nil, fmt.Errorf("failed to decode config file: %v", err)
 	}
 
-	config.SFKeyPath = filepath.FromSlash(config.SFKeyPath)
+	// Normalize the SSH key path for the current OS
+	config.SFKeyPath = filepath.Clean(config.SFKeyPath)
+
+	// Validate that the key file exists
+	if _, err := os.Stat(config.SFKeyPath); os.IsNotExist(err) {
+		return nil, fmt.Errorf("SSH key file not found at path: %s", config.SFKeyPath)
+	} else if err != nil {
+		return nil, fmt.Errorf("error accessing SSH key file: %v", err)
+	}
 
 	return config, nil
 }
@@ -74,7 +82,9 @@ func CompressDirectory(srcDir, dstFile string) error {
 		if err != nil {
 			return err
 		}
-		header.Name = relPath
+
+		// Normalize paths to UNIX-style for tar compatibility
+		header.Name = filepath.ToSlash(relPath)
 
 		// Explicitly set the type flag for directories
 		if fi.IsDir() {