Esempio n. 1
0
func verifyVersion(version string) error {
	if len(version) == 0 {
		return errors.NewNotAPointerError(errors.New("Missing version"))
	}

	for _, v := range v1Aliases {
		if v == version {
			return nil
		}
	}

	return errors.New("Invalid version: " + version)
}
Esempio n. 2
0
func decodeKVData(data []byte) (kvps map[string]string, exts map[string]string, err error) {
	kvps = make(map[string]string)

	if !matcherRE.Match(data) {
		err = errors.NewNotAPointerError(errors.New("invalid header"))
		return
	}

	scanner := bufio.NewScanner(bytes.NewBuffer(data))
	line := 0
	numKeys := len(pointerKeys)
	for scanner.Scan() {
		text := scanner.Text()
		if len(text) == 0 {
			continue
		}

		parts := strings.SplitN(text, " ", 2)
		if len(parts) < 2 {
			err = fmt.Errorf("Error reading line %d: %s", line, text)
			return
		}

		key := parts[0]
		value := parts[1]

		if numKeys <= line {
			err = fmt.Errorf("Extra line: %s", text)
			return
		}

		if expected := pointerKeys[line]; key != expected {
			if !extRE.Match([]byte(key)) {
				err = errors.NewBadPointerKeyError(expected, key)
				return
			}
			if exts == nil {
				exts = make(map[string]string)
			}
			exts[key] = value
			continue
		}

		line += 1
		kvps[key] = value
	}

	err = scanner.Err()
	return
}
Esempio n. 3
0
func DecodePointerFromFile(file string) (*Pointer, error) {
	// Check size before reading
	stat, err := os.Stat(file)
	if err != nil {
		return nil, err
	}
	if stat.Size() > blobSizeCutoff {
		return nil, errors.NewNotAPointerError(errors.New("file size exceeds lfs pointer size cutoff"))
	}
	f, err := os.OpenFile(file, os.O_RDONLY, 0644)
	if err != nil {
		return nil, err
	}
	defer f.Close()
	return DecodePointer(f)
}