Implementing independent or platform-specific code

The best way to learn is to put what has been learned into practice. In this section, we’ll revisit the audiofile CLI to implement a few new commands. In the code for the new features we’ll implement, the focus will be on the use of the os and path/filepath packages.

Platform-independent code

Let’s now implement a few new features for the audiofile CLI that will run independently of the operating system:

• Delete: This deletes stored metadata by ID
• Search: This searches stored metadata for a specific search string

The creation of each of these new feature commands was initiated with the cobra-CLI; however, the platform-specific code is isolated in the storage/flatfile.go file, which is the flat file storage for the storage interface.

First, let’s show the Delete method:

func (f FlatFile) Delete(id string) error {
    dirname, err := os.UserHomeDir()
 ...