Function splitBatchCheckOutput

repository/git.go:712–733

splitBatchCheckOutput parses the output of a 'git cat-file --batch-check=...' command. The output is expected to be formatted as a series of entries, with each entry consisting of: 1. The SHA1 hash of the git object being output, followed by a space. 2. The git "type" of the object (commit, blob, t

(out *bytes.Buffer)

//
// The return value is a map from object hash to a boolean indicating if that object is a commit.
func splitBatchCheckOutput(out *bytes.Buffer) (map[string]bool, error) {
	isCommit := make(map[string]bool)
	reader := bufio.NewReader(out)
	for {
		nameLine, err := reader.ReadString(byte(' '))
		if err == io.EOF {
			return isCommit, nil
		}
		if err != nil {
			return nil, fmt.Errorf("Failure while reading the next object name: %v", err)
		}
		nameLine = strings.TrimSuffix(nameLine, " ")
		typeLine, err := reader.ReadString(byte('\n'))
		if err != nil && err != io.EOF {
			return nil, fmt.Errorf("Failure while reading the next object type: %q - %v", nameLine, err)
		}
		typeLine = strings.TrimSuffix(typeLine, "\n")
		if typeLine == "commit" {
			isCommit[nameLine] = true
		}
	}
}

// splitBatchCatFileOutput parses the output of a 'git cat-file --batch=...' command.
//