Method readIndex

storage/github/github.go:213–226

readIndex reads the index JSON from the Git repo into a map. It returns the populated map & the Git SHA associated with the contents. If the index file is not found in the Git repo, an empty index is returned with no error. If any error occurs, a nil index and empty SHA are returned along with the e

()

// If the index file is not found in the Git repo, an empty index is returned with no error.
// If any error occurs, a nil index and empty SHA are returned along with the error.
func (gh *Storage) readIndex() (map[string]int64, string, error) {
	index := map[string]int64{}

	contents, sha, err := gh.readFile(fs.IndexName)
	if err != nil && err != errFileNotFound {
		return nil, "", err
	}
	if err == errFileNotFound {
		return index, "", nil
	}

	err = json.Unmarshal(contents, &index)
	return index, sha, err
}

// writeIndex marshals the index into JSON and writes the file to the Git repo.
// It returns any errors associated with marshaling the data or writing the file.