//hashFilesInDir computes h=hash(h,file bytes) for each file in a directory
//Directory entries are traversed recursively. In the end a single
//hash value is returned for the entire directory structure
func hashFilesInDir(rootDir string, dir string, hash []byte, tw *tar.Writer) ([]byte, error) {
currentDir := filepath.Join(rootDir, dir)
logger.Debug("hashFiles %s", currentDir)
//ReadDir returns sorted list of files in dir
fis, err := ioutil.ReadDir(currentDir)
if err != nil {
return hash, fmt.Errorf("ReadDir failed %s\n", err)
}
for _, fi := range fis {
name := filepath.Join(dir, fi.Name())
if fi.IsDir() {
var err error
hash, err = hashFilesInDir(rootDir, name, hash, tw)
if err != nil {
return hash, err
}
continue
}
fqp := filepath.Join(rootDir, name)
buf, err := ioutil.ReadFile(fqp)
if err != nil {
fmt.Printf("Error reading %s\n", err)
return hash, err
}
newSlice := make([]byte, len(hash)+len(buf))
copy(newSlice[len(buf):], hash[:])
//hash = md5.Sum(newSlice)
hash = util.ComputeCryptoHash(newSlice)
if tw != nil {
is := bytes.NewReader(buf)
if err = cutil.WriteStreamToPackage(is, fqp, filepath.Join("src", name), tw); err != nil {
return hash, fmt.Errorf("Error adding file to tar %s", err)
}
}
}
return hash, nil
}
//hashFilesInDir computes h=hash(h,file bytes) for each file in a directory
//Directory entries are traversed recursively. In the end a single
//hash value is returned for the entire directory structure
func hashFilesInDir(rootDir string, dir string, hash []byte, tw *tar.Writer) ([]byte, error) {
currentDir := filepath.Join(rootDir, dir)
logger.Debugf("hashFiles %s", currentDir)
//ReadDir returns sorted list of files in dir
fis, err := ioutil.ReadDir(currentDir)
if err != nil {
return hash, fmt.Errorf("ReadDir failed %s\n", err)
}
for _, fi := range fis {
name := filepath.Join(dir, fi.Name())
if fi.IsDir() {
var err error
hash, err = hashFilesInDir(rootDir, name, hash, tw)
if err != nil {
return hash, err
}
continue
}
fqp := filepath.Join(rootDir, name)
buf, err := ioutil.ReadFile(fqp)
if err != nil {
fmt.Printf("Error reading %s\n", err)
return hash, err
}
//get the new hash from file contents
hash = computeHash(buf, hash)
if tw != nil {
is := bytes.NewReader(buf)
if err = cutil.WriteStreamToPackage(is, fqp, filepath.Join("src", name), tw); err != nil {
return hash, fmt.Errorf("Error adding file to tar %s", err)
}
}
}
return hash, nil
}
//hashFilesInDir computes h=hash(h,file bytes) for each file in a directory
//Directory entries are traversed recursively. In the end a single
//hash value is returned for the entire directory structure
func hashFilesInDir(cutoff string, dir string, hash []byte, tw *tar.Writer) ([]byte, error) {
//ReadDir returns sorted list of files in dir
fis, err := ioutil.ReadDir(dir)
if err != nil {
return hash, fmt.Errorf("ReadDir failed %s\n", err)
}
for _, fi := range fis {
name := fmt.Sprintf("%s/%s", dir, fi.Name())
if fi.IsDir() {
var err error
hash, err = hashFilesInDir(cutoff, name, hash, tw)
if err != nil {
return hash, err
}
continue
}
buf, err := ioutil.ReadFile(name)
if err != nil {
fmt.Printf("Error reading %s\n", err)
return hash, err
}
newSlice := make([]byte, len(hash)+len(buf))
copy(newSlice[len(buf):], hash[:])
//hash = md5.Sum(newSlice)
hash = util.ComputeCryptoHash(newSlice)
if tw != nil {
is := bytes.NewReader(buf)
if err = cutil.WriteStreamToPackage(is, name, name[len(cutoff):], tw); err != nil {
return hash, fmt.Errorf("Error adding file to tar %s", err)
}
}
}
return hash, nil
}
