// Encode transforms a Tag into a plumbing.EncodedObject.
func (t *Tag) Encode(o plumbing.EncodedObject) error {
o.SetType(plumbing.TagObject)
w, err := o.Writer()
if err != nil {
return err
}
defer ioutil.CheckClose(w, &err)
if _, err = fmt.Fprintf(w,
"object %s\ntype %s\ntag %s\ntagger ",
t.Target.String(), t.TargetType.Bytes(), t.Name); err != nil {
return err
}
if err = t.Tagger.Encode(w); err != nil {
return err
}
if _, err = fmt.Fprint(w, "\n\n"); err != nil {
return err
}
if _, err = fmt.Fprint(w, t.Message); err != nil {
return err
}
return err
}
// Encode transforms a Blob into a plumbing.EncodedObject.
func (b *Blob) Encode(o plumbing.EncodedObject) error {
w, err := o.Writer()
if err != nil {
return err
}
defer ioutil.CheckClose(w, &err)
r, err := b.Reader()
if err != nil {
return err
}
defer ioutil.CheckClose(r, &err)
_, err = io.Copy(w, r)
o.SetType(plumbing.BlobObject)
return err
}
// Encode transforms a Commit into a plumbing.EncodedObject.
func (b *Commit) Encode(o plumbing.EncodedObject) error {
o.SetType(plumbing.CommitObject)
w, err := o.Writer()
if err != nil {
return err
}
defer ioutil.CheckClose(w, &err)
if _, err = fmt.Fprintf(w, "tree %s\n", b.tree.String()); err != nil {
return err
}
for _, parent := range b.parents {
if _, err = fmt.Fprintf(w, "parent %s\n", parent.String()); err != nil {
return err
}
}
if _, err = fmt.Fprint(w, "author "); err != nil {
return err
}
if err = b.Author.Encode(w); err != nil {
return err
}
if _, err = fmt.Fprint(w, "\ncommitter "); err != nil {
return err
}
if err = b.Committer.Encode(w); err != nil {
return err
}
if _, err = fmt.Fprintf(w, "\n\n%s", b.Message); err != nil {
return err
}
return err
}
// Encode transforms a Tree into a plumbing.EncodedObject.
func (t *Tree) Encode(o plumbing.EncodedObject) error {
o.SetType(plumbing.TreeObject)
w, err := o.Writer()
if err != nil {
return err
}
var size int
defer ioutil.CheckClose(w, &err)
for _, entry := range t.Entries {
n, err := fmt.Fprintf(w, "%o %s", entry.Mode, entry.Name)
if err != nil {
return err
}
size += n
n, err = w.Write([]byte{0x00})
if err != nil {
return err
}
size += n
n, err = w.Write([]byte(entry.Hash[:]))
if err != nil {
return err
}
size += n
}
o.SetSize(int64(size))
return err
}
func (r *Remote) fetch(o *FetchOptions) (refs storer.ReferenceStorer, err error) {
if o.RemoteName == "" {
o.RemoteName = r.c.Name
}
if err := o.Validate(); err != nil {
return nil, err
}
if len(o.RefSpecs) == 0 {
o.RefSpecs = r.c.Fetch
}
s, err := newFetchPackSession(r.c.URL)
if err != nil {
return nil, err
}
defer ioutil.CheckClose(s, &err)
ar, err := s.AdvertisedReferences()
if err != nil {
return nil, err
}
req, err := r.newUploadPackRequest(o, ar)
if err != nil {
return nil, err
}
remoteRefs, err := ar.AllReferences()
if err != nil {
return nil, err
}
req.Wants, err = getWants(o.RefSpecs, r.s, remoteRefs)
if len(req.Wants) == 0 {
return remoteRefs, NoErrAlreadyUpToDate
}
req.Haves, err = getHaves(r.s)
if err != nil {
return nil, err
}
if err := r.fetchPack(o, s, req); err != nil {
return nil, err
}
if err := r.updateLocalReferenceStorage(o.RefSpecs, remoteRefs); err != nil {
return nil, err
}
return remoteRefs, err
}
// Decode transform an plumbing.EncodedObject into a Tree struct
func (t *Tree) Decode(o plumbing.EncodedObject) (err error) {
if o.Type() != plumbing.TreeObject {
return ErrUnsupportedObject
}
t.Hash = o.Hash()
if o.Size() == 0 {
return nil
}
t.Entries = nil
t.m = nil
reader, err := o.Reader()
if err != nil {
return err
}
defer ioutil.CheckClose(reader, &err)
r := bufio.NewReader(reader)
for {
mode, err := r.ReadString(' ')
if err != nil {
if err == io.EOF {
break
}
return err
}
fm, err := t.decodeFileMode(mode[:len(mode)-1])
if err != nil && err != io.EOF {
return err
}
name, err := r.ReadString(0)
if err != nil && err != io.EOF {
return err
}
var hash plumbing.Hash
if _, err = io.ReadFull(r, hash[:]); err != nil {
return err
}
baseName := name[:len(name)-1]
t.Entries = append(t.Entries, TreeEntry{
Hash: hash,
Mode: fm,
Name: baseName,
})
}
return nil
}
// Decode transforms a plumbing.EncodedObject into a Tag struct.
func (t *Tag) Decode(o plumbing.EncodedObject) (err error) {
if o.Type() != plumbing.TagObject {
return ErrUnsupportedObject
}
t.Hash = o.Hash()
reader, err := o.Reader()
if err != nil {
return err
}
defer ioutil.CheckClose(reader, &err)
r := bufio.NewReader(reader)
for {
line, err := r.ReadSlice('\n')
if err != nil && err != io.EOF {
return err
}
line = bytes.TrimSpace(line)
if len(line) == 0 {
break // Start of message
}
split := bytes.SplitN(line, []byte{' '}, 2)
switch string(split[0]) {
case "object":
t.Target = plumbing.NewHash(string(split[1]))
case "type":
t.TargetType, err = plumbing.ParseObjectType(string(split[1]))
if err != nil {
return err
}
case "tag":
t.Name = string(split[1])
case "tagger":
t.Tagger.Decode(split[1])
}
if err == io.EOF {
return nil
}
}
data, err := stdioutil.ReadAll(r)
if err != nil {
return err
}
t.Message = string(data)
return nil
}
// Contents returns the contents of a file as a string.
func (f *File) Contents() (content string, err error) {
reader, err := f.Reader()
if err != nil {
return "", err
}
defer ioutil.CheckClose(reader, &err)
buf := new(bytes.Buffer)
if _, err := buf.ReadFrom(reader); err != nil {
return "", err
}
return buf.String(), nil
}
// Decode transforms a plumbing.EncodedObject into a Commit struct.
func (c *Commit) Decode(o plumbing.EncodedObject) (err error) {
if o.Type() != plumbing.CommitObject {
return ErrUnsupportedObject
}
c.Hash = o.Hash()
reader, err := o.Reader()
if err != nil {
return err
}
defer ioutil.CheckClose(reader, &err)
r := bufio.NewReader(reader)
var message bool
for {
line, err := r.ReadSlice('\n')
if err != nil && err != io.EOF {
return err
}
if !message {
line = bytes.TrimSpace(line)
if len(line) == 0 {
message = true
continue
}
split := bytes.SplitN(line, []byte{' '}, 2)
switch string(split[0]) {
case "tree":
c.tree = plumbing.NewHash(string(split[1]))
case "parent":
c.parents = append(c.parents, plumbing.NewHash(string(split[1])))
case "author":
c.Author.Decode(split[1])
case "committer":
c.Committer.Decode(split[1])
}
} else {
c.Message += string(line)
}
if err == io.EOF {
return nil
}
}
}
func (r *Remote) fetchPack(o *FetchOptions, s transport.FetchPackSession,
req *packp.UploadPackRequest) (err error) {
reader, err := s.FetchPack(req)
if err != nil {
return err
}
defer ioutil.CheckClose(reader, &err)
if err := r.updateShallow(o, reader); err != nil {
return err
}
if err = r.updateObjectStorage(
buildSidebandIfSupported(req.Capabilities, reader, r.p),
); err != nil {
return err
}
return err
}
