worktree: solve merge conflicts
diff --git a/common_test.go b/common_test.go
index f8f4e61..efe1ecc 100644
--- a/common_test.go
+++ b/common_test.go
@@ -113,14 +113,7 @@
p := f.Packfile()
defer p.Close()
- n := packfile.NewScanner(p)
- d, err := packfile.NewDecoder(n, storer)
- if err != nil {
- panic(err)
- }
-
- _, err = d.Decode()
- if err != nil {
+ if err := packfile.UpdateObjectStorage(storer, p); err != nil {
panic(err)
}
diff --git a/config/config.go b/config/config.go
index ce6506d..a637f6d 100644
--- a/config/config.go
+++ b/config/config.go
@@ -40,6 +40,9 @@
IsBare bool
// Worktree is the path to the root of the working tree.
Worktree string
+ // CommentChar is the character indicating the start of a
+ // comment for commands like commit and tag
+ CommentChar string
}
Pack struct {
@@ -113,6 +116,7 @@
urlKey = "url"
bareKey = "bare"
worktreeKey = "worktree"
+ commentCharKey = "commentChar"
windowKey = "window"
mergeKey = "merge"
@@ -151,6 +155,7 @@
}
c.Core.Worktree = s.Options.Get(worktreeKey)
+ c.Core.CommentChar = s.Options.Get(commentCharKey)
}
func (c *Config) unmarshalPack() error {
diff --git a/config/config_test.go b/config/config_test.go
index 5cd713e..fe73de8 100644
--- a/config/config_test.go
+++ b/config/config_test.go
@@ -13,6 +13,7 @@
input := []byte(`[core]
bare = true
worktree = foo
+ commentchar = bar
[pack]
window = 20
[remote "origin"]
@@ -38,6 +39,7 @@
c.Assert(cfg.Core.IsBare, Equals, true)
c.Assert(cfg.Core.Worktree, Equals, "foo")
+ c.Assert(cfg.Core.CommentChar, Equals, "bar")
c.Assert(cfg.Pack.Window, Equals, uint(20))
c.Assert(cfg.Remotes, HasLen, 2)
c.Assert(cfg.Remotes["origin"].Name, Equals, "origin")
diff --git a/options.go b/options.go
index 885980e..7b1570f 100644
--- a/options.go
+++ b/options.go
@@ -4,6 +4,7 @@
"errors"
"regexp"
+ "golang.org/x/crypto/openpgp"
"gopkg.in/src-d/go-git.v4/config"
"gopkg.in/src-d/go-git.v4/plumbing"
"gopkg.in/src-d/go-git.v4/plumbing/object"
@@ -347,6 +348,9 @@
// Parents are the parents commits for the new commit, by default when
// len(Parents) is zero, the hash of HEAD reference is used.
Parents []plumbing.Hash
+ // A key to sign the commit with. A nil value here means the commit will not
+ // be signed. The private key must be present and already decrypted.
+ SignKey *openpgp.Entity
}
// Validate validates the fields and sets the default values.
diff --git a/plumbing/cache/buffer_lru.go b/plumbing/cache/buffer_lru.go
new file mode 100644
index 0000000..f2c0f90
--- /dev/null
+++ b/plumbing/cache/buffer_lru.go
@@ -0,0 +1,98 @@
+package cache
+
+import (
+ "container/list"
+ "sync"
+)
+
+// BufferLRU implements an object cache with an LRU eviction policy and a
+// maximum size (measured in object size).
+type BufferLRU struct {
+ MaxSize FileSize
+
+ actualSize FileSize
+ ll *list.List
+ cache map[int64]*list.Element
+ mut sync.Mutex
+}
+
+// NewBufferLRU creates a new BufferLRU with the given maximum size. The maximum
+// size will never be exceeded.
+func NewBufferLRU(maxSize FileSize) *BufferLRU {
+ return &BufferLRU{MaxSize: maxSize}
+}
+
+// NewBufferLRUDefault creates a new BufferLRU with the default cache size.
+func NewBufferLRUDefault() *BufferLRU {
+ return &BufferLRU{MaxSize: DefaultMaxSize}
+}
+
+type buffer struct {
+ Key int64
+ Slice []byte
+}
+
+// Put puts a buffer into the cache. If the buffer is already in the cache, it
+// will be marked as used. Otherwise, it will be inserted. A buffers might
+// be evicted to make room for the new one.
+func (c *BufferLRU) Put(key int64, slice []byte) {
+ c.mut.Lock()
+ defer c.mut.Unlock()
+
+ if c.cache == nil {
+ c.actualSize = 0
+ c.cache = make(map[int64]*list.Element, 1000)
+ c.ll = list.New()
+ }
+
+ if ee, ok := c.cache[key]; ok {
+ c.ll.MoveToFront(ee)
+ ee.Value = buffer{key, slice}
+ return
+ }
+
+ objSize := FileSize(len(slice))
+
+ if objSize > c.MaxSize {
+ return
+ }
+
+ for c.actualSize+objSize > c.MaxSize {
+ last := c.ll.Back()
+ lastObj := last.Value.(buffer)
+ lastSize := FileSize(len(lastObj.Slice))
+
+ c.ll.Remove(last)
+ delete(c.cache, lastObj.Key)
+ c.actualSize -= lastSize
+ }
+
+ ee := c.ll.PushFront(buffer{key, slice})
+ c.cache[key] = ee
+ c.actualSize += objSize
+}
+
+// Get returns a buffer by its key. It marks the buffer as used. If the buffer
+// is not in the cache, (nil, false) will be returned.
+func (c *BufferLRU) Get(key int64) ([]byte, bool) {
+ c.mut.Lock()
+ defer c.mut.Unlock()
+
+ ee, ok := c.cache[key]
+ if !ok {
+ return nil, false
+ }
+
+ c.ll.MoveToFront(ee)
+ return ee.Value.(buffer).Slice, true
+}
+
+// Clear the content of this buffer cache.
+func (c *BufferLRU) Clear() {
+ c.mut.Lock()
+ defer c.mut.Unlock()
+
+ c.ll = nil
+ c.cache = nil
+ c.actualSize = 0
+}
diff --git a/plumbing/cache/buffer_test.go b/plumbing/cache/buffer_test.go
new file mode 100644
index 0000000..262138a
--- /dev/null
+++ b/plumbing/cache/buffer_test.go
@@ -0,0 +1,128 @@
+package cache
+
+import (
+ "sync"
+
+ . "gopkg.in/check.v1"
+)
+
+type BufferSuite struct {
+ c map[string]Buffer
+ aBuffer []byte
+ bBuffer []byte
+ cBuffer []byte
+ dBuffer []byte
+ eBuffer []byte
+}
+
+var _ = Suite(&BufferSuite{})
+
+func (s *BufferSuite) SetUpTest(c *C) {
+ s.aBuffer = []byte("a")
+ s.bBuffer = []byte("bbb")
+ s.cBuffer = []byte("c")
+ s.dBuffer = []byte("d")
+ s.eBuffer = []byte("ee")
+
+ s.c = make(map[string]Buffer)
+ s.c["two_bytes"] = NewBufferLRU(2 * Byte)
+ s.c["default_lru"] = NewBufferLRUDefault()
+}
+
+func (s *BufferSuite) TestPutSameBuffer(c *C) {
+ for _, o := range s.c {
+ o.Put(1, s.aBuffer)
+ o.Put(1, s.aBuffer)
+ _, ok := o.Get(1)
+ c.Assert(ok, Equals, true)
+ }
+}
+
+func (s *BufferSuite) TestPutBigBuffer(c *C) {
+ for _, o := range s.c {
+ o.Put(1, s.bBuffer)
+ _, ok := o.Get(2)
+ c.Assert(ok, Equals, false)
+ }
+}
+
+func (s *BufferSuite) TestPutCacheOverflow(c *C) {
+ // this test only works with an specific size
+ o := s.c["two_bytes"]
+
+ o.Put(1, s.aBuffer)
+ o.Put(2, s.cBuffer)
+ o.Put(3, s.dBuffer)
+
+ obj, ok := o.Get(1)
+ c.Assert(ok, Equals, false)
+ c.Assert(obj, IsNil)
+ obj, ok = o.Get(2)
+ c.Assert(ok, Equals, true)
+ c.Assert(obj, NotNil)
+ obj, ok = o.Get(3)
+ c.Assert(ok, Equals, true)
+ c.Assert(obj, NotNil)
+}
+
+func (s *BufferSuite) TestEvictMultipleBuffers(c *C) {
+ o := s.c["two_bytes"]
+
+ o.Put(1, s.cBuffer)
+ o.Put(2, s.dBuffer) // now cache is full with two objects
+ o.Put(3, s.eBuffer) // this put should evict all previous objects
+
+ obj, ok := o.Get(1)
+ c.Assert(ok, Equals, false)
+ c.Assert(obj, IsNil)
+ obj, ok = o.Get(2)
+ c.Assert(ok, Equals, false)
+ c.Assert(obj, IsNil)
+ obj, ok = o.Get(3)
+ c.Assert(ok, Equals, true)
+ c.Assert(obj, NotNil)
+}
+
+func (s *BufferSuite) TestClear(c *C) {
+ for _, o := range s.c {
+ o.Put(1, s.aBuffer)
+ o.Clear()
+ obj, ok := o.Get(1)
+ c.Assert(ok, Equals, false)
+ c.Assert(obj, IsNil)
+ }
+}
+
+func (s *BufferSuite) TestConcurrentAccess(c *C) {
+ for _, o := range s.c {
+ var wg sync.WaitGroup
+
+ for i := 0; i < 1000; i++ {
+ wg.Add(3)
+ go func(i int) {
+ o.Put(int64(i), []byte{00})
+ wg.Done()
+ }(i)
+
+ go func(i int) {
+ if i%30 == 0 {
+ o.Clear()
+ }
+ wg.Done()
+ }(i)
+
+ go func(i int) {
+ o.Get(int64(i))
+ wg.Done()
+ }(i)
+ }
+
+ wg.Wait()
+ }
+}
+
+func (s *BufferSuite) TestDefaultLRU(c *C) {
+ defaultLRU := s.c["default_lru"].(*BufferLRU)
+
+ c.Assert(defaultLRU.MaxSize, Equals, DefaultMaxSize)
+}
diff --git a/plumbing/cache/common.go b/plumbing/cache/common.go
index e77baf0..2b7f36a 100644
--- a/plumbing/cache/common.go
+++ b/plumbing/cache/common.go
@@ -24,3 +24,16 @@
// Clear clears every object from the cache.
Clear()
}
+
+// Buffer is an interface to a buffer cache.
+type Buffer interface {
+ // Put puts a buffer into the cache. If the buffer is already in the cache,
+ // it will be marked as used. Otherwise, it will be inserted. Buffer might
+ // be evicted to make room for the new one.
+ Put(key int64, slice []byte)
+ // Get returns a buffer by its key. It marks the buffer as used. If the
+ // buffer is not in the cache, (nil, false) will be returned.
+ Get(key int64) ([]byte, bool)
+ // Clear clears every object from the cache.
+ Clear()
+}
diff --git a/plumbing/format/gitignore/pattern.go b/plumbing/format/gitignore/pattern.go
index 2603352..098cb50 100644
--- a/plumbing/format/gitignore/pattern.go
+++ b/plumbing/format/gitignore/pattern.go
@@ -133,6 +133,9 @@
} else if match {
matched = true
break
+ } else if len(path) == 0 {
+ // if nothing left then fail
+ matched = false
}
}
} else {
diff --git a/plumbing/format/gitignore/pattern_test.go b/plumbing/format/gitignore/pattern_test.go
index f94cef3..c410442 100644
--- a/plumbing/format/gitignore/pattern_test.go
+++ b/plumbing/format/gitignore/pattern_test.go
@@ -281,3 +281,9 @@
r := p.Match([]string{"value", "head", "vol["}, false)
c.Assert(r, Equals, NoMatch)
}
+
+func (s *PatternSuite) TestGlobMatch_issue_923(c *C) {
+ p := ParsePattern("**/android/**/GeneratedPluginRegistrant.java", nil)
+ r := p.Match([]string{"packages", "flutter_tools", "lib", "src", "android", "gradle.dart"}, false)
+ c.Assert(r, Equals, NoMatch)
+}
diff --git a/plumbing/format/idxfile/decoder.go b/plumbing/format/idxfile/decoder.go
index 45afb1e..5b92782 100644
--- a/plumbing/format/idxfile/decoder.go
+++ b/plumbing/format/idxfile/decoder.go
@@ -17,6 +17,11 @@
ErrMalformedIdxFile = errors.New("Malformed IDX file")
)
+const (
+ fanout = 256
+ objectIDLength = 20
+)
+
// Decoder reads and decodes idx files from an input stream.
type Decoder struct {
*bufio.Reader
@@ -27,13 +32,13 @@
return &Decoder{bufio.NewReader(r)}
}
-// Decode reads from the stream and decode the content into the Idxfile struct.
-func (d *Decoder) Decode(idx *Idxfile) error {
+// Decode reads from the stream and decode the content into the MemoryIndex struct.
+func (d *Decoder) Decode(idx *MemoryIndex) error {
if err := validateHeader(d); err != nil {
return err
}
- flow := []func(*Idxfile, io.Reader) error{
+ flow := []func(*MemoryIndex, io.Reader) error{
readVersion,
readFanout,
readObjectNames,
@@ -48,10 +53,6 @@
}
}
- if !idx.isValid() {
- return ErrMalformedIdxFile
- }
-
return nil
}
@@ -68,7 +69,7 @@
return nil
}
-func readVersion(idx *Idxfile, r io.Reader) error {
+func readVersion(idx *MemoryIndex, r io.Reader) error {
v, err := binary.ReadUint32(r)
if err != nil {
return err
@@ -82,74 +83,92 @@
return nil
}
-func readFanout(idx *Idxfile, r io.Reader) error {
- var err error
- for i := 0; i < 255; i++ {
- idx.Fanout[i], err = binary.ReadUint32(r)
+func readFanout(idx *MemoryIndex, r io.Reader) error {
+ for k := 0; k < fanout; k++ {
+ n, err := binary.ReadUint32(r)
if err != nil {
return err
}
- }
- idx.ObjectCount, err = binary.ReadUint32(r)
- return err
-}
-
-func readObjectNames(idx *Idxfile, r io.Reader) error {
- c := int(idx.ObjectCount)
- new := make([]Entry, c)
- for i := 0; i < c; i++ {
- e := &new[i]
- if _, err := io.ReadFull(r, e.Hash[:]); err != nil {
- return err
- }
-
- idx.Entries = append(idx.Entries, e)
+ idx.Fanout[k] = n
+ idx.FanoutMapping[k] = noMapping
}
return nil
}
-func readCRC32(idx *Idxfile, r io.Reader) error {
- c := int(idx.ObjectCount)
- for i := 0; i < c; i++ {
- if err := binary.Read(r, &idx.Entries[i].CRC32); err != nil {
- return err
- }
- }
-
- return nil
-}
-
-func readOffsets(idx *Idxfile, r io.Reader) error {
- c := int(idx.ObjectCount)
-
- for i := 0; i < c; i++ {
- o, err := binary.ReadUint32(r)
- if err != nil {
- return err
+func readObjectNames(idx *MemoryIndex, r io.Reader) error {
+ for k := 0; k < fanout; k++ {
+ var buckets uint32
+ if k == 0 {
+ buckets = idx.Fanout[k]
+ } else {
+ buckets = idx.Fanout[k] - idx.Fanout[k-1]
}
- idx.Entries[i].Offset = uint64(o)
- }
-
- for i := 0; i < c; i++ {
- if idx.Entries[i].Offset <= offsetLimit {
+ if buckets == 0 {
continue
}
- o, err := binary.ReadUint64(r)
- if err != nil {
+ if buckets < 0 {
+ return ErrMalformedIdxFile
+ }
+
+ idx.FanoutMapping[k] = len(idx.Names)
+
+ nameLen := int(buckets * objectIDLength)
+ bin := make([]byte, nameLen)
+ if _, err := io.ReadFull(r, bin); err != nil {
return err
}
- idx.Entries[i].Offset = o
+ idx.Names = append(idx.Names, bin)
+ idx.Offset32 = append(idx.Offset32, make([]byte, buckets*4))
+ idx.CRC32 = append(idx.CRC32, make([]byte, buckets*4))
}
return nil
}
-func readChecksums(idx *Idxfile, r io.Reader) error {
+func readCRC32(idx *MemoryIndex, r io.Reader) error {
+ for k := 0; k < fanout; k++ {
+ if pos := idx.FanoutMapping[k]; pos != noMapping {
+ if _, err := io.ReadFull(r, idx.CRC32[pos]); err != nil {
+ return err
+ }
+ }
+ }
+
+ return nil
+}
+
+func readOffsets(idx *MemoryIndex, r io.Reader) error {
+ var o64cnt int
+ for k := 0; k < fanout; k++ {
+ if pos := idx.FanoutMapping[k]; pos != noMapping {
+ if _, err := io.ReadFull(r, idx.Offset32[pos]); err != nil {
+ return err
+ }
+
+ for p := 0; p < len(idx.Offset32[pos]); p += 4 {
+ if idx.Offset32[pos][p]&(byte(1)<<7) > 0 {
+ o64cnt++
+ }
+ }
+ }
+ }
+
+ if o64cnt > 0 {
+ idx.Offset64 = make([]byte, o64cnt*8)
+ if _, err := io.ReadFull(r, idx.Offset64); err != nil {
+ return err
+ }
+ }
+
+ return nil
+}
+
+func readChecksums(idx *MemoryIndex, r io.Reader) error {
if _, err := io.ReadFull(r, idx.PackfileChecksum[:]); err != nil {
return err
}
diff --git a/plumbing/format/idxfile/decoder_test.go b/plumbing/format/idxfile/decoder_test.go
index 20d6859..b43d7c5 100644
--- a/plumbing/format/idxfile/decoder_test.go
+++ b/plumbing/format/idxfile/decoder_test.go
@@ -4,11 +4,12 @@
"bytes"
"encoding/base64"
"fmt"
+ "io"
+ "io/ioutil"
"testing"
+ "gopkg.in/src-d/go-git.v4/plumbing"
. "gopkg.in/src-d/go-git.v4/plumbing/format/idxfile"
- "gopkg.in/src-d/go-git.v4/plumbing/format/packfile"
- "gopkg.in/src-d/go-git.v4/storage/memory"
. "gopkg.in/check.v1"
"gopkg.in/src-d/go-git-fixtures.v3"
@@ -26,51 +27,34 @@
f := fixtures.Basic().One()
d := NewDecoder(f.Idx())
- idx := &Idxfile{}
+ idx := new(MemoryIndex)
err := d.Decode(idx)
c.Assert(err, IsNil)
- c.Assert(idx.Entries, HasLen, 31)
- c.Assert(idx.Entries[0].Hash.String(), Equals, "1669dce138d9b841a518c64b10914d88f5e488ea")
- c.Assert(idx.Entries[0].Offset, Equals, uint64(615))
- c.Assert(idx.Entries[0].CRC32, Equals, uint32(3645019190))
+ count, _ := idx.Count()
+ c.Assert(count, Equals, int64(31))
+
+ hash := plumbing.NewHash("1669dce138d9b841a518c64b10914d88f5e488ea")
+ ok, err := idx.Contains(hash)
+ c.Assert(err, IsNil)
+ c.Assert(ok, Equals, true)
+
+ offset, err := idx.FindOffset(hash)
+ c.Assert(err, IsNil)
+ c.Assert(offset, Equals, int64(615))
+
+ crc32, err := idx.FindCRC32(hash)
+ c.Assert(err, IsNil)
+ c.Assert(crc32, Equals, uint32(3645019190))
c.Assert(fmt.Sprintf("%x", idx.IdxChecksum), Equals, "fb794f1ec720b9bc8e43257451bd99c4be6fa1c9")
c.Assert(fmt.Sprintf("%x", idx.PackfileChecksum), Equals, f.PackfileHash.String())
}
-func (s *IdxfileSuite) TestDecodeCRCs(c *C) {
- f := fixtures.Basic().ByTag("ofs-delta").One()
-
- scanner := packfile.NewScanner(f.Packfile())
- storage := memory.NewStorage()
-
- pd, err := packfile.NewDecoder(scanner, storage)
- c.Assert(err, IsNil)
- _, err = pd.Decode()
- c.Assert(err, IsNil)
-
- i := pd.Index().ToIdxFile()
- i.Version = VersionSupported
-
- buf := bytes.NewBuffer(nil)
- e := NewEncoder(buf)
- _, err = e.Encode(i)
- c.Assert(err, IsNil)
-
- idx := &Idxfile{}
-
- d := NewDecoder(buf)
- err = d.Decode(idx)
- c.Assert(err, IsNil)
-
- c.Assert(idx.Entries, DeepEquals, i.Entries)
-}
-
func (s *IdxfileSuite) TestDecode64bitsOffsets(c *C) {
f := bytes.NewBufferString(fixtureLarge4GB)
- idx := &Idxfile{}
+ idx := new(MemoryIndex)
d := NewDecoder(base64.NewDecoder(base64.StdEncoding, f))
err := d.Decode(idx)
@@ -88,29 +72,22 @@
"35858be9c6f5914cbe6768489c41eb6809a2bceb": 5924278919,
}
- for _, e := range idx.Entries {
+ iter, err := idx.Entries()
+ c.Assert(err, IsNil)
+
+ var entries int
+ for {
+ e, err := iter.Next()
+ if err == io.EOF {
+ break
+ }
+ c.Assert(err, IsNil)
+ entries++
+
c.Assert(expected[e.Hash.String()], Equals, e.Offset)
}
-}
-func (s *IdxfileSuite) TestDecode64bitsOffsetsIdempotent(c *C) {
- f := bytes.NewBufferString(fixtureLarge4GB)
-
- expected := &Idxfile{}
-
- d := NewDecoder(base64.NewDecoder(base64.StdEncoding, f))
- err := d.Decode(expected)
- c.Assert(err, IsNil)
-
- buf := bytes.NewBuffer(nil)
- _, err = NewEncoder(buf).Encode(expected)
- c.Assert(err, IsNil)
-
- idx := &Idxfile{}
- err = NewDecoder(buf).Decode(idx)
- c.Assert(err, IsNil)
-
- c.Assert(idx.Entries, DeepEquals, expected.Entries)
+ c.Assert(entries, Equals, len(expected))
}
const fixtureLarge4GB = `/3RPYwAAAAIAAAAAAAAAAAAAAAAAAAABAAAAAQAAAAEAAAABAAAAAQAAAAEAAAABAAAAAQAAAAEA
@@ -139,3 +116,30 @@
ANz1Di4AAAABPUnxJAAAAADNxzlGr6vCJpIFz4XaG/fi/f9C9zgQ8ptKSQpfQ1NMJBGTDTxxYGGp
ch2xUA==
`
+
+func BenchmarkDecode(b *testing.B) {
+ if err := fixtures.Init(); err != nil {
+ b.Errorf("unexpected error initializing fixtures: %s", err)
+ }
+
+ f := fixtures.Basic().One()
+ fixture, err := ioutil.ReadAll(f.Idx())
+ if err != nil {
+ b.Errorf("unexpected error reading idx file: %s", err)
+ }
+
+ defer func() {
+ if err := fixtures.Clean(); err != nil {
+ b.Errorf("unexpected error cleaning fixtures: %s", err)
+ }
+ }()
+
+ for i := 0; i < b.N; i++ {
+ f := bytes.NewBuffer(fixture)
+ idx := new(MemoryIndex)
+ d := NewDecoder(f)
+ if err := d.Decode(idx); err != nil {
+ b.Errorf("unexpected error decoding: %s", err)
+ }
+ }
+}
diff --git a/plumbing/format/idxfile/encoder.go b/plumbing/format/idxfile/encoder.go
index 40abfb8..e479511 100644
--- a/plumbing/format/idxfile/encoder.go
+++ b/plumbing/format/idxfile/encoder.go
@@ -4,12 +4,11 @@
"crypto/sha1"
"hash"
"io"
- "sort"
"gopkg.in/src-d/go-git.v4/utils/binary"
)
-// Encoder writes Idxfile structs to an output stream.
+// Encoder writes MemoryIndex structs to an output stream.
type Encoder struct {
io.Writer
hash hash.Hash
@@ -22,11 +21,9 @@
return &Encoder{mw, h}
}
-// Encode encodes an Idxfile to the encoder writer.
-func (e *Encoder) Encode(idx *Idxfile) (int, error) {
- idx.Entries.Sort()
-
- flow := []func(*Idxfile) (int, error){
+// Encode encodes an MemoryIndex to the encoder writer.
+func (e *Encoder) Encode(idx *MemoryIndex) (int, error) {
+ flow := []func(*MemoryIndex) (int, error){
e.encodeHeader,
e.encodeFanout,
e.encodeHashes,
@@ -48,7 +45,7 @@
return sz, nil
}
-func (e *Encoder) encodeHeader(idx *Idxfile) (int, error) {
+func (e *Encoder) encodeHeader(idx *MemoryIndex) (int, error) {
c, err := e.Write(idxHeader)
if err != nil {
return c, err
@@ -57,75 +54,81 @@
return c + 4, binary.WriteUint32(e, idx.Version)
}
-func (e *Encoder) encodeFanout(idx *Idxfile) (int, error) {
- fanout := idx.calculateFanout()
- for _, c := range fanout {
+func (e *Encoder) encodeFanout(idx *MemoryIndex) (int, error) {
+ for _, c := range idx.Fanout {
if err := binary.WriteUint32(e, c); err != nil {
return 0, err
}
}
- return 1024, nil
+ return fanout * 4, nil
}
-func (e *Encoder) encodeHashes(idx *Idxfile) (int, error) {
- sz := 0
- for _, ent := range idx.Entries {
- i, err := e.Write(ent.Hash[:])
- sz += i
+func (e *Encoder) encodeHashes(idx *MemoryIndex) (int, error) {
+ var size int
+ for k := 0; k < fanout; k++ {
+ pos := idx.FanoutMapping[k]
+ if pos == noMapping {
+ continue
+ }
+ n, err := e.Write(idx.Names[pos])
if err != nil {
- return sz, err
+ return size, err
}
+ size += n
}
-
- return sz, nil
+ return size, nil
}
-func (e *Encoder) encodeCRC32(idx *Idxfile) (int, error) {
- sz := 0
- for _, ent := range idx.Entries {
- err := binary.Write(e, ent.CRC32)
- sz += 4
+func (e *Encoder) encodeCRC32(idx *MemoryIndex) (int, error) {
+ var size int
+ for k := 0; k < fanout; k++ {
+ pos := idx.FanoutMapping[k]
+ if pos == noMapping {
+ continue
+ }
+ n, err := e.Write(idx.CRC32[pos])
if err != nil {
- return sz, err
+ return size, err
}
+
+ size += n
}
- return sz, nil
+ return size, nil
}
-func (e *Encoder) encodeOffsets(idx *Idxfile) (int, error) {
- sz := 0
-
- var o64bits []uint64
- for _, ent := range idx.Entries {
- o := ent.Offset
- if o > offsetLimit {
- o64bits = append(o64bits, o)
- o = offsetLimit + uint64(len(o64bits))
+func (e *Encoder) encodeOffsets(idx *MemoryIndex) (int, error) {
+ var size int
+ for k := 0; k < fanout; k++ {
+ pos := idx.FanoutMapping[k]
+ if pos == noMapping {
+ continue
}
- if err := binary.WriteUint32(e, uint32(o)); err != nil {
- return sz, err
+ n, err := e.Write(idx.Offset32[pos])
+ if err != nil {
+ return size, err
}
- sz += 4
+ size += n
}
- for _, o := range o64bits {
- if err := binary.WriteUint64(e, o); err != nil {
- return sz, err
+ if len(idx.Offset64) > 0 {
+ n, err := e.Write(idx.Offset64)
+ if err != nil {
+ return size, err
}
- sz += 8
+ size += n
}
- return sz, nil
+ return size, nil
}
-func (e *Encoder) encodeChecksums(idx *Idxfile) (int, error) {
+func (e *Encoder) encodeChecksums(idx *MemoryIndex) (int, error) {
if _, err := e.Write(idx.PackfileChecksum[:]); err != nil {
return 0, err
}
@@ -137,11 +140,3 @@
return 40, nil
}
-
-// EntryList implements sort.Interface allowing sorting in increasing order.
-type EntryList []*Entry
-
-func (p EntryList) Len() int { return len(p) }
-func (p EntryList) Less(i, j int) bool { return p[i].Hash.String() < p[j].Hash.String() }
-func (p EntryList) Swap(i, j int) { p[i], p[j] = p[j], p[i] }
-func (p EntryList) Sort() { sort.Sort(p) }
diff --git a/plumbing/format/idxfile/encoder_test.go b/plumbing/format/idxfile/encoder_test.go
index e5b96b7..e8deeea 100644
--- a/plumbing/format/idxfile/encoder_test.go
+++ b/plumbing/format/idxfile/encoder_test.go
@@ -4,37 +4,18 @@
"bytes"
"io/ioutil"
- "gopkg.in/src-d/go-git.v4/plumbing"
. "gopkg.in/src-d/go-git.v4/plumbing/format/idxfile"
. "gopkg.in/check.v1"
"gopkg.in/src-d/go-git-fixtures.v3"
)
-func (s *IdxfileSuite) TestEncode(c *C) {
- expected := &Idxfile{}
- expected.Add(plumbing.NewHash("4bfc730165c370df4a012afbb45ba3f9c332c0d4"), 82, 82)
- expected.Add(plumbing.NewHash("8fa2238efdae08d83c12ee176fae65ff7c99af46"), 42, 42)
-
- buf := bytes.NewBuffer(nil)
- e := NewEncoder(buf)
- _, err := e.Encode(expected)
- c.Assert(err, IsNil)
-
- idx := &Idxfile{}
- d := NewDecoder(buf)
- err = d.Decode(idx)
- c.Assert(err, IsNil)
-
- c.Assert(idx.Entries, DeepEquals, expected.Entries)
-}
-
func (s *IdxfileSuite) TestDecodeEncode(c *C) {
fixtures.ByTag("packfile").Test(c, func(f *fixtures.Fixture) {
expected, err := ioutil.ReadAll(f.Idx())
c.Assert(err, IsNil)
- idx := &Idxfile{}
+ idx := new(MemoryIndex)
d := NewDecoder(bytes.NewBuffer(expected))
err = d.Decode(idx)
c.Assert(err, IsNil)
diff --git a/plumbing/format/idxfile/idxfile.go b/plumbing/format/idxfile/idxfile.go
index 6b05eaa..5fed278 100644
--- a/plumbing/format/idxfile/idxfile.go
+++ b/plumbing/format/idxfile/idxfile.go
@@ -1,30 +1,307 @@
package idxfile
-import "gopkg.in/src-d/go-git.v4/plumbing"
+import (
+ "bytes"
+ "io"
+ "sort"
+
+ "gopkg.in/src-d/go-git.v4/plumbing"
+ "gopkg.in/src-d/go-git.v4/utils/binary"
+)
const (
// VersionSupported is the only idx version supported.
VersionSupported = 2
- offsetLimit = 0x7fffffff
+ noMapping = -1
)
var (
idxHeader = []byte{255, 't', 'O', 'c'}
)
-// Idxfile is the in memory representation of an idx file.
-type Idxfile struct {
- Version uint32
- Fanout [255]uint32
- ObjectCount uint32
- Entries EntryList
- PackfileChecksum [20]byte
- IdxChecksum [20]byte
+// Index represents an index of a packfile.
+type Index interface {
+ // Contains checks whether the given hash is in the index.
+ Contains(h plumbing.Hash) (bool, error)
+ // FindOffset finds the offset in the packfile for the object with
+ // the given hash.
+ FindOffset(h plumbing.Hash) (int64, error)
+ // FindCRC32 finds the CRC32 of the object with the given hash.
+ FindCRC32(h plumbing.Hash) (uint32, error)
+ // FindHash finds the hash for the object with the given offset.
+ FindHash(o int64) (plumbing.Hash, error)
+ // Count returns the number of entries in the index.
+ Count() (int64, error)
+ // Entries returns an iterator to retrieve all index entries.
+ Entries() (EntryIter, error)
+ // EntriesByOffset returns an iterator to retrieve all index entries ordered
+ // by offset.
+ EntriesByOffset() (EntryIter, error)
}
-func NewIdxfile() *Idxfile {
- return &Idxfile{}
+// MemoryIndex is the in memory representation of an idx file.
+type MemoryIndex struct {
+ Version uint32
+ Fanout [256]uint32
+ // FanoutMapping maps the position in the fanout table to the position
+ // in the Names, Offset32 and CRC32 slices. This improves the memory
+ // usage by not needing an array with unnecessary empty slots.
+ FanoutMapping [256]int
+ Names [][]byte
+ Offset32 [][]byte
+ CRC32 [][]byte
+ Offset64 []byte
+ PackfileChecksum [20]byte
+ IdxChecksum [20]byte
+
+ offsetHash map[int64]plumbing.Hash
+}
+
+var _ Index = (*MemoryIndex)(nil)
+
+// NewMemoryIndex returns an instance of a new MemoryIndex.
+func NewMemoryIndex() *MemoryIndex {
+ return &MemoryIndex{}
+}
+
+func (idx *MemoryIndex) findHashIndex(h plumbing.Hash) (int, bool) {
+ k := idx.FanoutMapping[h[0]]
+ if k == noMapping {
+ return 0, false
+ }
+
+ if len(idx.Names) <= k {
+ return 0, false
+ }
+
+ data := idx.Names[k]
+ high := uint64(len(idx.Offset32[k])) >> 2
+ if high == 0 {
+ return 0, false
+ }
+
+ low := uint64(0)
+ for {
+ mid := (low + high) >> 1
+ offset := mid * objectIDLength
+
+ cmp := bytes.Compare(h[:], data[offset:offset+objectIDLength])
+ if cmp < 0 {
+ high = mid
+ } else if cmp == 0 {
+ return int(mid), true
+ } else {
+ low = mid + 1
+ }
+
+ if low >= high {
+ break
+ }
+ }
+
+ return 0, false
+}
+
+// Contains implements the Index interface.
+func (idx *MemoryIndex) Contains(h plumbing.Hash) (bool, error) {
+ _, ok := idx.findHashIndex(h)
+ return ok, nil
+}
+
+// FindOffset implements the Index interface.
+func (idx *MemoryIndex) FindOffset(h plumbing.Hash) (int64, error) {
+ if len(idx.FanoutMapping) <= int(h[0]) {
+ return 0, plumbing.ErrObjectNotFound
+ }
+
+ k := idx.FanoutMapping[h[0]]
+ i, ok := idx.findHashIndex(h)
+ if !ok {
+ return 0, plumbing.ErrObjectNotFound
+ }
+
+ return idx.getOffset(k, i)
+}
+
+const isO64Mask = uint64(1) << 31
+
+func (idx *MemoryIndex) getOffset(firstLevel, secondLevel int) (int64, error) {
+ offset := secondLevel << 2
+ buf := bytes.NewBuffer(idx.Offset32[firstLevel][offset : offset+4])
+ ofs, err := binary.ReadUint32(buf)
+ if err != nil {
+ return -1, err
+ }
+
+ if (uint64(ofs) & isO64Mask) != 0 {
+ offset := 8 * (uint64(ofs) & ^isO64Mask)
+ buf := bytes.NewBuffer(idx.Offset64[offset : offset+8])
+ n, err := binary.ReadUint64(buf)
+ if err != nil {
+ return -1, err
+ }
+
+ return int64(n), nil
+ }
+
+ return int64(ofs), nil
+}
+
+// FindCRC32 implements the Index interface.
+func (idx *MemoryIndex) FindCRC32(h plumbing.Hash) (uint32, error) {
+ k := idx.FanoutMapping[h[0]]
+ i, ok := idx.findHashIndex(h)
+ if !ok {
+ return 0, plumbing.ErrObjectNotFound
+ }
+
+ return idx.getCRC32(k, i)
+}
+
+func (idx *MemoryIndex) getCRC32(firstLevel, secondLevel int) (uint32, error) {
+ offset := secondLevel << 2
+ buf := bytes.NewBuffer(idx.CRC32[firstLevel][offset : offset+4])
+ return binary.ReadUint32(buf)
+}
+
+// FindHash implements the Index interface.
+func (idx *MemoryIndex) FindHash(o int64) (plumbing.Hash, error) {
+ // Lazily generate the reverse offset/hash map if required.
+ if idx.offsetHash == nil {
+ if err := idx.genOffsetHash(); err != nil {
+ return plumbing.ZeroHash, err
+ }
+ }
+
+ hash, ok := idx.offsetHash[o]
+ if !ok {
+ return plumbing.ZeroHash, plumbing.ErrObjectNotFound
+ }
+
+ return hash, nil
+}
+
+// genOffsetHash generates the offset/hash mapping for reverse search.
+func (idx *MemoryIndex) genOffsetHash() error {
+ count, err := idx.Count()
+ if err != nil {
+ return err
+ }
+
+ idx.offsetHash = make(map[int64]plumbing.Hash, count)
+
+ iter, err := idx.Entries()
+ if err != nil {
+ return err
+ }
+
+ for {
+ entry, err := iter.Next()
+ if err != nil {
+ if err == io.EOF {
+ return nil
+ }
+ return err
+ }
+
+ idx.offsetHash[int64(entry.Offset)] = entry.Hash
+ }
+}
+
+// Count implements the Index interface.
+func (idx *MemoryIndex) Count() (int64, error) {
+ return int64(idx.Fanout[fanout-1]), nil
+}
+
+// Entries implements the Index interface.
+func (idx *MemoryIndex) Entries() (EntryIter, error) {
+ return &idxfileEntryIter{idx, 0, 0, 0}, nil
+}
+
+// EntriesByOffset implements the Index interface.
+func (idx *MemoryIndex) EntriesByOffset() (EntryIter, error) {
+ count, err := idx.Count()
+ if err != nil {
+ return nil, err
+ }
+
+ iter := &idxfileEntryOffsetIter{
+ entries: make(entriesByOffset, count),
+ }
+
+ entries, err := idx.Entries()
+ if err != nil {
+ return nil, err
+ }
+
+ for pos := 0; int64(pos) < count; pos++ {
+ entry, err := entries.Next()
+ if err != nil {
+ return nil, err
+ }
+
+ iter.entries[pos] = entry
+ }
+
+ sort.Sort(iter.entries)
+
+ return iter, nil
+}
+
+// EntryIter is an iterator that will return the entries in a packfile index.
+type EntryIter interface {
+ // Next returns the next entry in the packfile index.
+ Next() (*Entry, error)
+ // Close closes the iterator.
+ Close() error
+}
+
+type idxfileEntryIter struct {
+ idx *MemoryIndex
+ total int
+ firstLevel, secondLevel int
+}
+
+func (i *idxfileEntryIter) Next() (*Entry, error) {
+ for {
+ if i.firstLevel >= fanout {
+ return nil, io.EOF
+ }
+
+ if i.total >= int(i.idx.Fanout[i.firstLevel]) {
+ i.firstLevel++
+ i.secondLevel = 0
+ continue
+ }
+
+ entry := new(Entry)
+ ofs := i.secondLevel * objectIDLength
+ copy(entry.Hash[:], i.idx.Names[i.idx.FanoutMapping[i.firstLevel]][ofs:])
+
+ pos := i.idx.FanoutMapping[entry.Hash[0]]
+
+ offset, err := i.idx.getOffset(pos, i.secondLevel)
+ if err != nil {
+ return nil, err
+ }
+ entry.Offset = uint64(offset)
+
+ entry.CRC32, err = i.idx.getCRC32(pos, i.secondLevel)
+ if err != nil {
+ return nil, err
+ }
+
+ i.secondLevel++
+ i.total++
+
+ return entry, nil
+ }
+}
+
+func (i *idxfileEntryIter) Close() error {
+ i.firstLevel = fanout
+ return nil
}
// Entry is the in memory representation of an object entry in the idx file.
@@ -34,35 +311,37 @@
Offset uint64
}
-// Add adds a new Entry with the given values to the Idxfile.
-func (idx *Idxfile) Add(h plumbing.Hash, offset uint64, crc32 uint32) {
- idx.Entries = append(idx.Entries, &Entry{
- Hash: h,
- Offset: offset,
- CRC32: crc32,
- })
+type idxfileEntryOffsetIter struct {
+ entries entriesByOffset
+ pos int
}
-func (idx *Idxfile) isValid() bool {
- fanout := idx.calculateFanout()
- for k, c := range idx.Fanout {
- if fanout[k] != c {
- return false
- }
+func (i *idxfileEntryOffsetIter) Next() (*Entry, error) {
+ if i.pos >= len(i.entries) {
+ return nil, io.EOF
}
- return true
+ entry := i.entries[i.pos]
+ i.pos++
+
+ return entry, nil
}
-func (idx *Idxfile) calculateFanout() [256]uint32 {
- fanout := [256]uint32{}
- for _, e := range idx.Entries {
- fanout[e.Hash[0]]++
- }
+func (i *idxfileEntryOffsetIter) Close() error {
+ i.pos = len(i.entries) + 1
+ return nil
+}
- for i := 1; i < 256; i++ {
- fanout[i] += fanout[i-1]
- }
+type entriesByOffset []*Entry
- return fanout
+func (o entriesByOffset) Len() int {
+ return len(o)
+}
+
+func (o entriesByOffset) Less(i int, j int) bool {
+ return o[i].Offset < o[j].Offset
+}
+
+func (o entriesByOffset) Swap(i int, j int) {
+ o[i], o[j] = o[j], o[i]
}
diff --git a/plumbing/format/idxfile/idxfile_test.go b/plumbing/format/idxfile/idxfile_test.go
new file mode 100644
index 0000000..0e0ca2a
--- /dev/null
+++ b/plumbing/format/idxfile/idxfile_test.go
@@ -0,0 +1,169 @@
+package idxfile_test
+
+import (
+ "bytes"
+ "encoding/base64"
+ "fmt"
+ "io"
+ "testing"
+
+ "gopkg.in/src-d/go-git.v4/plumbing"
+ "gopkg.in/src-d/go-git.v4/plumbing/format/idxfile"
+
+ . "gopkg.in/check.v1"
+ "gopkg.in/src-d/go-git-fixtures.v3"
+)
+
+func BenchmarkFindOffset(b *testing.B) {
+ idx, err := fixtureIndex()
+ if err != nil {
+ b.Fatalf(err.Error())
+ }
+
+ for i := 0; i < b.N; i++ {
+ for _, h := range fixtureHashes {
+ _, err := idx.FindOffset(h)
+ if err != nil {
+ b.Fatalf("error getting offset: %s", err)
+ }
+ }
+ }
+}
+
+func BenchmarkFindCRC32(b *testing.B) {
+ idx, err := fixtureIndex()
+ if err != nil {
+ b.Fatalf(err.Error())
+ }
+
+ for i := 0; i < b.N; i++ {
+ for _, h := range fixtureHashes {
+ _, err := idx.FindCRC32(h)
+ if err != nil {
+ b.Fatalf("error getting crc32: %s", err)
+ }
+ }
+ }
+}
+
+func BenchmarkContains(b *testing.B) {
+ idx, err := fixtureIndex()
+ if err != nil {
+ b.Fatalf(err.Error())
+ }
+
+ for i := 0; i < b.N; i++ {
+ for _, h := range fixtureHashes {
+ ok, err := idx.Contains(h)
+ if err != nil {
+ b.Fatalf("error checking if hash is in index: %s", err)
+ }
+
+ if !ok {
+ b.Error("expected hash to be in index")
+ }
+ }
+ }
+}
+
+func BenchmarkEntries(b *testing.B) {
+ idx, err := fixtureIndex()
+ if err != nil {
+ b.Fatalf(err.Error())
+ }
+
+ for i := 0; i < b.N; i++ {
+ iter, err := idx.Entries()
+ if err != nil {
+ b.Fatalf("unexpected error getting entries: %s", err)
+ }
+
+ var entries int
+ for {
+ _, err := iter.Next()
+ if err != nil {
+ if err == io.EOF {
+ break
+ }
+
+ b.Errorf("unexpected error getting entry: %s", err)
+ }
+
+ entries++
+ }
+
+ if entries != len(fixtureHashes) {
+ b.Errorf("expecting entries to be %d, got %d", len(fixtureHashes), entries)
+ }
+ }
+}
+
+type IndexSuite struct {
+ fixtures.Suite
+}
+
+var _ = Suite(&IndexSuite{})
+
+func (s *IndexSuite) TestFindHash(c *C) {
+ idx, err := fixtureIndex()
+ c.Assert(err, IsNil)
+
+ for i, pos := range fixtureOffsets {
+ hash, err := idx.FindHash(pos)
+ c.Assert(err, IsNil)
+ c.Assert(hash, Equals, fixtureHashes[i])
+ }
+}
+
+func (s *IndexSuite) TestEntriesByOffset(c *C) {
+ idx, err := fixtureIndex()
+ c.Assert(err, IsNil)
+
+ entries, err := idx.EntriesByOffset()
+ c.Assert(err, IsNil)
+
+ for _, pos := range fixtureOffsets {
+ e, err := entries.Next()
+ c.Assert(err, IsNil)
+
+ c.Assert(e.Offset, Equals, uint64(pos))
+ }
+}
+
+var fixtureHashes = []plumbing.Hash{
+ plumbing.NewHash("303953e5aa461c203a324821bc1717f9b4fff895"),
+ plumbing.NewHash("5296768e3d9f661387ccbff18c4dea6c997fd78c"),
+ plumbing.NewHash("03fc8d58d44267274edef4585eaeeb445879d33f"),
+ plumbing.NewHash("8f3ceb4ea4cb9e4a0f751795eb41c9a4f07be772"),
+ plumbing.NewHash("e0d1d625010087f79c9e01ad9d8f95e1628dda02"),
+ plumbing.NewHash("90eba326cdc4d1d61c5ad25224ccbf08731dd041"),
+ plumbing.NewHash("bab53055add7bc35882758a922c54a874d6b1272"),
+ plumbing.NewHash("1b8995f51987d8a449ca5ea4356595102dc2fbd4"),
+ plumbing.NewHash("35858be9c6f5914cbe6768489c41eb6809a2bceb"),
+}
+
+var fixtureOffsets = []int64{
+ 12,
+ 142,
+ 1601322837,
+ 2646996529,
+ 3452385606,
+ 3707047470,
+ 5323223332,
+ 5894072943,
+ 5924278919,
+}
+
+func fixtureIndex() (*idxfile.MemoryIndex, error) {
+ f := bytes.NewBufferString(fixtureLarge4GB)
+
+ idx := new(idxfile.MemoryIndex)
+
+ d := idxfile.NewDecoder(base64.NewDecoder(base64.StdEncoding, f))
+ err := d.Decode(idx)
+ if err != nil {
+ return nil, fmt.Errorf("unexpected error decoding index: %s", err)
+ }
+
+ return idx, nil
+}
diff --git a/plumbing/format/idxfile/writer.go b/plumbing/format/idxfile/writer.go
new file mode 100644
index 0000000..aa919e7
--- /dev/null
+++ b/plumbing/format/idxfile/writer.go
@@ -0,0 +1,186 @@
+package idxfile
+
+import (
+ "bytes"
+ "fmt"
+ "math"
+ "sort"
+ "sync"
+
+ "gopkg.in/src-d/go-git.v4/plumbing"
+ "gopkg.in/src-d/go-git.v4/utils/binary"
+)
+
+// objects implements sort.Interface and uses hash as sorting key.
+type objects []Entry
+
+// Writer implements a packfile Observer interface and is used to generate
+// indexes.
+type Writer struct {
+ m sync.Mutex
+
+ count uint32
+ checksum plumbing.Hash
+ objects objects
+ offset64 uint32
+ finished bool
+ index *MemoryIndex
+ added map[plumbing.Hash]struct{}
+}
+
+// Index returns a previously created MemoryIndex or creates a new one if
+// needed.
+func (w *Writer) Index() (*MemoryIndex, error) {
+ w.m.Lock()
+ defer w.m.Unlock()
+
+ if w.index == nil {
+ return w.createIndex()
+ }
+
+ return w.index, nil
+}
+
+// Add appends new object data.
+func (w *Writer) Add(h plumbing.Hash, pos uint64, crc uint32) {
+ w.m.Lock()
+ defer w.m.Unlock()
+
+ if w.added == nil {
+ w.added = make(map[plumbing.Hash]struct{})
+ }
+
+ if _, ok := w.added[h]; !ok {
+ w.added[h] = struct{}{}
+ w.objects = append(w.objects, Entry{h, crc, pos})
+ }
+
+}
+
+func (w *Writer) Finished() bool {
+ return w.finished
+}
+
+// OnHeader implements packfile.Observer interface.
+func (w *Writer) OnHeader(count uint32) error {
+ w.count = count
+ w.objects = make(objects, 0, count)
+ return nil
+}
+
+// OnInflatedObjectHeader implements packfile.Observer interface.
+func (w *Writer) OnInflatedObjectHeader(t plumbing.ObjectType, objSize int64, pos int64) error {
+ return nil
+}
+
+// OnInflatedObjectContent implements packfile.Observer interface.
+func (w *Writer) OnInflatedObjectContent(h plumbing.Hash, pos int64, crc uint32, _ []byte) error {
+ w.Add(h, uint64(pos), crc)
+ return nil
+}
+
+// OnFooter implements packfile.Observer interface.
+func (w *Writer) OnFooter(h plumbing.Hash) error {
+ w.checksum = h
+ w.finished = true
+ _, err := w.createIndex()
+ if err != nil {
+ return err
+ }
+
+ return nil
+}
+
+// creatIndex returns a filled MemoryIndex with the information filled by
+// the observer callbacks.
+func (w *Writer) createIndex() (*MemoryIndex, error) {
+ if !w.finished {
+ return nil, fmt.Errorf("the index still hasn't finished building")
+ }
+
+ idx := new(MemoryIndex)
+ w.index = idx
+
+ sort.Sort(w.objects)
+
+ // unmap all fans by default
+ for i := range idx.FanoutMapping {
+ idx.FanoutMapping[i] = noMapping
+ }
+
+ buf := new(bytes.Buffer)
+
+ last := -1
+ bucket := -1
+ for i, o := range w.objects {
+ fan := o.Hash[0]
+
+ // fill the gaps between fans
+ for j := last + 1; j < int(fan); j++ {
+ idx.Fanout[j] = uint32(i)
+ }
+
+ // update the number of objects for this position
+ idx.Fanout[fan] = uint32(i + 1)
+
+ // we move from one bucket to another, update counters and allocate
+ // memory
+ if last != int(fan) {
+ bucket++
+ idx.FanoutMapping[fan] = bucket
+ last = int(fan)
+
+ idx.Names = append(idx.Names, make([]byte, 0))
+ idx.Offset32 = append(idx.Offset32, make([]byte, 0))
+ idx.CRC32 = append(idx.CRC32, make([]byte, 0))
+ }
+
+ idx.Names[bucket] = append(idx.Names[bucket], o.Hash[:]...)
+
+ offset := o.Offset
+ if offset > math.MaxInt32 {
+ offset = w.addOffset64(offset)
+ }
+
+ buf.Truncate(0)
+ binary.WriteUint32(buf, uint32(offset))
+ idx.Offset32[bucket] = append(idx.Offset32[bucket], buf.Bytes()...)
+
+ buf.Truncate(0)
+ binary.WriteUint32(buf, uint32(o.CRC32))
+ idx.CRC32[bucket] = append(idx.CRC32[bucket], buf.Bytes()...)
+ }
+
+ for j := last + 1; j < 256; j++ {
+ idx.Fanout[j] = uint32(len(w.objects))
+ }
+
+ idx.Version = VersionSupported
+ idx.PackfileChecksum = w.checksum
+
+ return idx, nil
+}
+
+func (w *Writer) addOffset64(pos uint64) uint64 {
+ buf := new(bytes.Buffer)
+ binary.WriteUint64(buf, pos)
+ w.index.Offset64 = append(w.index.Offset64, buf.Bytes()...)
+
+ index := uint64(w.offset64 | (1 << 31))
+ w.offset64++
+
+ return index
+}
+
+func (o objects) Len() int {
+ return len(o)
+}
+
+func (o objects) Less(i int, j int) bool {
+ cmp := bytes.Compare(o[i].Hash[:], o[j].Hash[:])
+ return cmp < 0
+}
+
+func (o objects) Swap(i int, j int) {
+ o[i], o[j] = o[j], o[i]
+}
diff --git a/plumbing/format/idxfile/writer_test.go b/plumbing/format/idxfile/writer_test.go
new file mode 100644
index 0000000..912211d
--- /dev/null
+++ b/plumbing/format/idxfile/writer_test.go
@@ -0,0 +1,98 @@
+package idxfile_test
+
+import (
+ "bytes"
+ "encoding/base64"
+ "io/ioutil"
+
+ "gopkg.in/src-d/go-git.v4/plumbing"
+ "gopkg.in/src-d/go-git.v4/plumbing/format/idxfile"
+ "gopkg.in/src-d/go-git.v4/plumbing/format/packfile"
+
+ . "gopkg.in/check.v1"
+ "gopkg.in/src-d/go-git-fixtures.v3"
+)
+
+type WriterSuite struct {
+ fixtures.Suite
+}
+
+var _ = Suite(&WriterSuite{})
+
+func (s *WriterSuite) TestWriter(c *C) {
+ f := fixtures.Basic().One()
+ scanner := packfile.NewScanner(f.Packfile())
+
+ obs := new(idxfile.Writer)
+ parser, err := packfile.NewParser(scanner, obs)
+ c.Assert(err, IsNil)
+
+ _, err = parser.Parse()
+ c.Assert(err, IsNil)
+
+ idx, err := obs.Index()
+ c.Assert(err, IsNil)
+
+ idxFile := f.Idx()
+ expected, err := ioutil.ReadAll(idxFile)
+ c.Assert(err, IsNil)
+ idxFile.Close()
+
+ buf := new(bytes.Buffer)
+ encoder := idxfile.NewEncoder(buf)
+ n, err := encoder.Encode(idx)
+ c.Assert(err, IsNil)
+ c.Assert(n, Equals, len(expected))
+
+ c.Assert(buf.Bytes(), DeepEquals, expected)
+}
+
+func (s *WriterSuite) TestWriterLarge(c *C) {
+ writer := new(idxfile.Writer)
+ err := writer.OnHeader(uint32(len(fixture4GbEntries)))
+ c.Assert(err, IsNil)
+
+ for _, o := range fixture4GbEntries {
+ err = writer.OnInflatedObjectContent(plumbing.NewHash(o.hash), o.offset, o.crc, nil)
+ c.Assert(err, IsNil)
+ }
+
+ err = writer.OnFooter(fixture4GbChecksum)
+ c.Assert(err, IsNil)
+
+ idx, err := writer.Index()
+ c.Assert(err, IsNil)
+
+ // load fixture index
+ f := bytes.NewBufferString(fixtureLarge4GB)
+ expected, err := ioutil.ReadAll(base64.NewDecoder(base64.StdEncoding, f))
+ c.Assert(err, IsNil)
+
+ buf := new(bytes.Buffer)
+ encoder := idxfile.NewEncoder(buf)
+ n, err := encoder.Encode(idx)
+ c.Assert(err, IsNil)
+ c.Assert(n, Equals, len(expected))
+
+ c.Assert(buf.Bytes(), DeepEquals, expected)
+}
+
+var (
+ fixture4GbChecksum = plumbing.NewHash("afabc2269205cf85da1bf7e2fdff42f73810f29b")
+
+ fixture4GbEntries = []struct {
+ offset int64
+ hash string
+ crc uint32
+ }{
+ {12, "303953e5aa461c203a324821bc1717f9b4fff895", 0xbc347c4c},
+ {142, "5296768e3d9f661387ccbff18c4dea6c997fd78c", 0xcdc22842},
+ {1601322837, "03fc8d58d44267274edef4585eaeeb445879d33f", 0x929dfaaa},
+ {2646996529, "8f3ceb4ea4cb9e4a0f751795eb41c9a4f07be772", 0xa61def8a},
+ {3452385606, "e0d1d625010087f79c9e01ad9d8f95e1628dda02", 0x06bea180},
+ {3707047470, "90eba326cdc4d1d61c5ad25224ccbf08731dd041", 0x7193f3ba},
+ {5323223332, "bab53055add7bc35882758a922c54a874d6b1272", 0xac269b8e},
+ {5894072943, "1b8995f51987d8a449ca5ea4356595102dc2fbd4", 0x2187c056},
+ {5924278919, "35858be9c6f5914cbe6768489c41eb6809a2bceb", 0x9c89d9d2},
+ }
+)
diff --git a/plumbing/format/packfile/common.go b/plumbing/format/packfile/common.go
index beb015d..2b4aceb 100644
--- a/plumbing/format/packfile/common.go
+++ b/plumbing/format/packfile/common.go
@@ -23,24 +23,28 @@
maskType = uint8(112) // 0111 0000
)
-// UpdateObjectStorage updates the given storer.EncodedObjectStorer with the contents of the
+// UpdateObjectStorage updates the storer with the objects in the given
// packfile.
-func UpdateObjectStorage(s storer.EncodedObjectStorer, packfile io.Reader) error {
- if sw, ok := s.(storer.PackfileWriter); ok {
- return writePackfileToObjectStorage(sw, packfile)
+func UpdateObjectStorage(s storer.Storer, packfile io.Reader) error {
+ if pw, ok := s.(storer.PackfileWriter); ok {
+ return WritePackfileToObjectStorage(pw, packfile)
}
- stream := NewScanner(packfile)
- d, err := NewDecoder(stream, s)
+ p, err := NewParserWithStorage(NewScanner(packfile), s)
if err != nil {
return err
}
- _, err = d.Decode()
+ _, err = p.Parse()
return err
}
-func writePackfileToObjectStorage(sw storer.PackfileWriter, packfile io.Reader) (err error) {
+// WritePackfileToObjectStorage writes all the packfile objects into the given
+// object storage.
+func WritePackfileToObjectStorage(
+ sw storer.PackfileWriter,
+ packfile io.Reader,
+) (err error) {
w, err := sw.PackfileWriter()
if err != nil {
return err
diff --git a/plumbing/format/packfile/decoder.go b/plumbing/format/packfile/decoder.go
deleted file mode 100644
index f706e5d..0000000
--- a/plumbing/format/packfile/decoder.go
+++ /dev/null
@@ -1,495 +0,0 @@
-package packfile
-
-import (
- "bytes"
-
- "gopkg.in/src-d/go-git.v4/plumbing"
- "gopkg.in/src-d/go-git.v4/plumbing/cache"
- "gopkg.in/src-d/go-git.v4/plumbing/storer"
-)
-
-// Format specifies if the packfile uses ref-deltas or ofs-deltas.
-type Format int
-
-// Possible values of the Format type.
-const (
- UnknownFormat Format = iota
- OFSDeltaFormat
- REFDeltaFormat
-)
-
-var (
- // ErrMaxObjectsLimitReached is returned by Decode when the number
- // of objects in the packfile is higher than
- // Decoder.MaxObjectsLimit.
- ErrMaxObjectsLimitReached = NewError("max. objects limit reached")
- // ErrInvalidObject is returned by Decode when an invalid object is
- // found in the packfile.
- ErrInvalidObject = NewError("invalid git object")
- // ErrPackEntryNotFound is returned by Decode when a reference in
- // the packfile references and unknown object.
- ErrPackEntryNotFound = NewError("can't find a pack entry")
- // ErrZLib is returned by Decode when there was an error unzipping
- // the packfile contents.
- ErrZLib = NewError("zlib reading error")
- // ErrCannotRecall is returned by RecallByOffset or RecallByHash if the object
- // to recall cannot be returned.
- ErrCannotRecall = NewError("cannot recall object")
- // ErrResolveDeltasNotSupported is returned if a NewDecoder is used with a
- // non-seekable scanner and without a plumbing.ObjectStorage
- ErrResolveDeltasNotSupported = NewError("resolve delta is not supported")
- // ErrNonSeekable is returned if a ReadObjectAt method is called without a
- // seekable scanner
- ErrNonSeekable = NewError("non-seekable scanner")
- // ErrRollback error making Rollback over a transaction after an error
- ErrRollback = NewError("rollback error, during set error")
- // ErrAlreadyDecoded is returned if NewDecoder is called for a second time
- ErrAlreadyDecoded = NewError("packfile was already decoded")
-)
-
-// Decoder reads and decodes packfiles from an input Scanner, if an ObjectStorer
-// was provided the decoded objects are store there. If not the decode object
-// is destroyed. The Offsets and CRCs are calculated whether an
-// ObjectStorer was provided or not.
-type Decoder struct {
- deltaBaseCache cache.Object
-
- s *Scanner
- o storer.EncodedObjectStorer
- tx storer.Transaction
-
- isDecoded bool
-
- // hasBuiltIndex indicates if the index is fully built or not. If it is not,
- // will be built incrementally while decoding.
- hasBuiltIndex bool
- idx *Index
-
- offsetToType map[int64]plumbing.ObjectType
- decoderType plumbing.ObjectType
-}
-
-// NewDecoder returns a new Decoder that decodes a Packfile using the given
-// Scanner and stores the objects in the provided EncodedObjectStorer. ObjectStorer can be nil, in this
-// If the passed EncodedObjectStorer is nil, objects are not stored, but
-// offsets on the Packfile and CRCs are calculated.
-//
-// If EncodedObjectStorer is nil and the Scanner is not Seekable, ErrNonSeekable is
-// returned.
-//
-// If the ObjectStorer implements storer.Transactioner, a transaction is created
-// during the Decode execution. If anything fails, Rollback is called
-func NewDecoder(s *Scanner, o storer.EncodedObjectStorer) (*Decoder, error) {
- return NewDecoderForType(s, o, plumbing.AnyObject,
- cache.NewObjectLRUDefault())
-}
-
-// NewDecoderWithCache is a version of NewDecoder where cache can be specified.
-func NewDecoderWithCache(s *Scanner, o storer.EncodedObjectStorer,
- cacheObject cache.Object) (*Decoder, error) {
-
- return NewDecoderForType(s, o, plumbing.AnyObject, cacheObject)
-}
-
-// NewDecoderForType returns a new Decoder but in this case for a specific object type.
-// When an object is read using this Decoder instance and it is not of the same type of
-// the specified one, nil will be returned. This is intended to avoid the content
-// deserialization of all the objects.
-//
-// cacheObject is a cache.Object implementation that is used to speed up the
-// process. If cache is not needed you can pass nil. To create an LRU cache
-// object with the default size you can use the helper cache.ObjectLRUDefault().
-func NewDecoderForType(s *Scanner, o storer.EncodedObjectStorer,
- t plumbing.ObjectType, cacheObject cache.Object) (*Decoder, error) {
-
- if t == plumbing.OFSDeltaObject ||
- t == plumbing.REFDeltaObject ||
- t == plumbing.InvalidObject {
- return nil, plumbing.ErrInvalidType
- }
-
- if !canResolveDeltas(s, o) {
- return nil, ErrResolveDeltasNotSupported
- }
-
- return &Decoder{
- s: s,
- o: o,
- deltaBaseCache: cacheObject,
-
- idx: NewIndex(0),
- offsetToType: make(map[int64]plumbing.ObjectType),
- decoderType: t,
- }, nil
-}
-
-func canResolveDeltas(s *Scanner, o storer.EncodedObjectStorer) bool {
- return s.IsSeekable || o != nil
-}
-
-// Decode reads a packfile and stores it in the value pointed to by s. The
-// offsets and the CRCs are calculated by this method
-func (d *Decoder) Decode() (checksum plumbing.Hash, err error) {
- defer func() { d.isDecoded = true }()
-
- if d.isDecoded {
- return plumbing.ZeroHash, ErrAlreadyDecoded
- }
-
- if err := d.doDecode(); err != nil {
- return plumbing.ZeroHash, err
- }
-
- return d.s.Checksum()
-}
-
-func (d *Decoder) doDecode() error {
- _, count, err := d.s.Header()
- if err != nil {
- return err
- }
-
- if !d.hasBuiltIndex {
- d.idx = NewIndex(int(count))
- }
- defer func() { d.hasBuiltIndex = true }()
-
- _, isTxStorer := d.o.(storer.Transactioner)
- switch {
- case d.o == nil:
- return d.decodeObjects(int(count))
- case isTxStorer:
- return d.decodeObjectsWithObjectStorerTx(int(count))
- default:
- return d.decodeObjectsWithObjectStorer(int(count))
- }
-}
-
-func (d *Decoder) decodeObjects(count int) error {
- for i := 0; i < count; i++ {
- if _, err := d.DecodeObject(); err != nil {
- return err
- }
- }
-
- return nil
-}
-
-func (d *Decoder) decodeObjectsWithObjectStorer(count int) error {
- for i := 0; i < count; i++ {
- obj, err := d.DecodeObject()
- if err != nil {
- return err
- }
-
- if _, err := d.o.SetEncodedObject(obj); err != nil {
- return err
- }
- }
-
- return nil
-}
-
-func (d *Decoder) decodeObjectsWithObjectStorerTx(count int) error {
- d.tx = d.o.(storer.Transactioner).Begin()
-
- for i := 0; i < count; i++ {
- obj, err := d.DecodeObject()
- if err != nil {
- return err
- }
-
- if _, err := d.tx.SetEncodedObject(obj); err != nil {
- if rerr := d.tx.Rollback(); rerr != nil {
- return ErrRollback.AddDetails(
- "error: %s, during tx.Set error: %s", rerr, err,
- )
- }
-
- return err
- }
-
- }
-
- return d.tx.Commit()
-}
-
-// DecodeObject reads the next object from the scanner and returns it. This
-// method can be used in replacement of the Decode method, to work in a
-// interactive way. If you created a new decoder instance using NewDecoderForType
-// constructor, if the object decoded is not equals to the specified one, nil will
-// be returned
-func (d *Decoder) DecodeObject() (plumbing.EncodedObject, error) {
- return d.doDecodeObject(d.decoderType)
-}
-
-func (d *Decoder) doDecodeObject(t plumbing.ObjectType) (plumbing.EncodedObject, error) {
- h, err := d.s.NextObjectHeader()
- if err != nil {
- return nil, err
- }
-
- if t == plumbing.AnyObject {
- return d.decodeByHeader(h)
- }
-
- return d.decodeIfSpecificType(h)
-}
-
-func (d *Decoder) decodeIfSpecificType(h *ObjectHeader) (plumbing.EncodedObject, error) {
- var (
- obj plumbing.EncodedObject
- realType plumbing.ObjectType
- err error
- )
- switch h.Type {
- case plumbing.OFSDeltaObject:
- realType, err = d.ofsDeltaType(h.OffsetReference)
- case plumbing.REFDeltaObject:
- realType, err = d.refDeltaType(h.Reference)
- if err == plumbing.ErrObjectNotFound {
- obj, err = d.decodeByHeader(h)
- if err != nil {
- realType = obj.Type()
- }
- }
- default:
- realType = h.Type
- }
-
- if err != nil {
- return nil, err
- }
-
- d.offsetToType[h.Offset] = realType
-
- if d.decoderType == realType {
- if obj != nil {
- return obj, nil
- }
-
- return d.decodeByHeader(h)
- }
-
- return nil, nil
-}
-
-func (d *Decoder) ofsDeltaType(offset int64) (plumbing.ObjectType, error) {
- t, ok := d.offsetToType[offset]
- if !ok {
- return plumbing.InvalidObject, plumbing.ErrObjectNotFound
- }
-
- return t, nil
-}
-
-func (d *Decoder) refDeltaType(ref plumbing.Hash) (plumbing.ObjectType, error) {
- e, ok := d.idx.LookupHash(ref)
- if !ok {
- return plumbing.InvalidObject, plumbing.ErrObjectNotFound
- }
-
- return d.ofsDeltaType(int64(e.Offset))
-}
-
-func (d *Decoder) decodeByHeader(h *ObjectHeader) (plumbing.EncodedObject, error) {
- obj := d.newObject()
- obj.SetSize(h.Length)
- obj.SetType(h.Type)
-
- var crc uint32
- var err error
- switch h.Type {
- case plumbing.CommitObject, plumbing.TreeObject, plumbing.BlobObject, plumbing.TagObject:
- crc, err = d.fillRegularObjectContent(obj)
- case plumbing.REFDeltaObject:
- crc, err = d.fillREFDeltaObjectContent(obj, h.Reference)
- case plumbing.OFSDeltaObject:
- crc, err = d.fillOFSDeltaObjectContent(obj, h.OffsetReference)
- default:
- err = ErrInvalidObject.AddDetails("type %q", h.Type)
- }
-
- if err != nil {
- return obj, err
- }
-
- if !d.hasBuiltIndex {
- d.idx.Add(obj.Hash(), uint64(h.Offset), crc)
- }
-
- return obj, nil
-}
-
-func (d *Decoder) newObject() plumbing.EncodedObject {
- if d.o == nil {
- return &plumbing.MemoryObject{}
- }
-
- return d.o.NewEncodedObject()
-}
-
-// DecodeObjectAt reads an object at the given location. Every EncodedObject
-// returned is added into a internal index. This is intended to be able to regenerate
-// objects from deltas (offset deltas or reference deltas) without an package index
-// (.idx file). If Decode wasn't called previously objects offset should provided
-// using the SetOffsets method. It decodes the object regardless of the Decoder
-// type.
-func (d *Decoder) DecodeObjectAt(offset int64) (plumbing.EncodedObject, error) {
- if !d.s.IsSeekable {
- return nil, ErrNonSeekable
- }
-
- beforeJump, err := d.s.SeekFromStart(offset)
- if err != nil {
- return nil, err
- }
-
- defer func() {
- _, seekErr := d.s.SeekFromStart(beforeJump)
- if err == nil {
- err = seekErr
- }
- }()
-
- return d.doDecodeObject(plumbing.AnyObject)
-}
-
-func (d *Decoder) fillRegularObjectContent(obj plumbing.EncodedObject) (uint32, error) {
- w, err := obj.Writer()
- if err != nil {
- return 0, err
- }
-
- _, crc, err := d.s.NextObject(w)
- return crc, err
-}
-
-func (d *Decoder) fillREFDeltaObjectContent(obj plumbing.EncodedObject, ref plumbing.Hash) (uint32, error) {
- buf := bufPool.Get().(*bytes.Buffer)
- buf.Reset()
- _, crc, err := d.s.NextObject(buf)
- if err != nil {
- return 0, err
- }
-
- base, ok := d.cacheGet(ref)
- if !ok {
- base, err = d.recallByHash(ref)
- if err != nil {
- return 0, err
- }
- }
-
- obj.SetType(base.Type())
- err = ApplyDelta(obj, base, buf.Bytes())
- d.cachePut(obj)
- bufPool.Put(buf)
-
- return crc, err
-}
-
-func (d *Decoder) fillOFSDeltaObjectContent(obj plumbing.EncodedObject, offset int64) (uint32, error) {
- buf := bytes.NewBuffer(nil)
- _, crc, err := d.s.NextObject(buf)
- if err != nil {
- return 0, err
- }
-
- e, ok := d.idx.LookupOffset(uint64(offset))
- var base plumbing.EncodedObject
- if ok {
- base, ok = d.cacheGet(e.Hash)
- }
-
- if !ok {
- base, err = d.recallByOffset(offset)
- if err != nil {
- return 0, err
- }
-
- d.cachePut(base)
- }
-
- obj.SetType(base.Type())
- err = ApplyDelta(obj, base, buf.Bytes())
- d.cachePut(obj)
-
- return crc, err
-}
-
-func (d *Decoder) cacheGet(h plumbing.Hash) (plumbing.EncodedObject, bool) {
- if d.deltaBaseCache == nil {
- return nil, false
- }
-
- return d.deltaBaseCache.Get(h)
-}
-
-func (d *Decoder) cachePut(obj plumbing.EncodedObject) {
- if d.deltaBaseCache == nil {
- return
- }
-
- d.deltaBaseCache.Put(obj)
-}
-
-func (d *Decoder) recallByOffset(o int64) (plumbing.EncodedObject, error) {
- if d.s.IsSeekable {
- return d.DecodeObjectAt(o)
- }
-
- if e, ok := d.idx.LookupOffset(uint64(o)); ok {
- return d.recallByHashNonSeekable(e.Hash)
- }
-
- return nil, plumbing.ErrObjectNotFound
-}
-
-func (d *Decoder) recallByHash(h plumbing.Hash) (plumbing.EncodedObject, error) {
- if d.s.IsSeekable {
- if e, ok := d.idx.LookupHash(h); ok {
- return d.DecodeObjectAt(int64(e.Offset))
- }
- }
-
- return d.recallByHashNonSeekable(h)
-}
-
-// recallByHashNonSeekable if we are in a transaction the objects are read from
-// the transaction, if not are directly read from the ObjectStorer
-func (d *Decoder) recallByHashNonSeekable(h plumbing.Hash) (obj plumbing.EncodedObject, err error) {
- if d.tx != nil {
- obj, err = d.tx.EncodedObject(plumbing.AnyObject, h)
- } else {
- obj, err = d.o.EncodedObject(plumbing.AnyObject, h)
- }
-
- if err != plumbing.ErrObjectNotFound {
- return obj, err
- }
-
- return nil, plumbing.ErrObjectNotFound
-}
-
-// SetIndex sets an index for the packfile. It is recommended to set this.
-// The index might be read from a file or reused from a previous Decoder usage
-// (see Index function).
-func (d *Decoder) SetIndex(idx *Index) {
- d.hasBuiltIndex = true
- d.idx = idx
-}
-
-// Index returns the index for the packfile. If index was set with SetIndex,
-// Index will return it. Otherwise, it will return an index that is built while
-// decoding. If neither SetIndex was called with a full index or Decode called
-// for the whole packfile, then the returned index will be incomplete.
-func (d *Decoder) Index() *Index {
- return d.idx
-}
-
-// Close closes the Scanner. usually this mean that the whole reader is read and
-// discarded
-func (d *Decoder) Close() error {
- return d.s.Close()
-}
diff --git a/plumbing/format/packfile/decoder_test.go b/plumbing/format/packfile/decoder_test.go
deleted file mode 100644
index b5bc7b7..0000000
--- a/plumbing/format/packfile/decoder_test.go
+++ /dev/null
@@ -1,396 +0,0 @@
-package packfile_test
-
-import (
- "io"
-
- "gopkg.in/src-d/go-git.v4/plumbing"
- "gopkg.in/src-d/go-git.v4/plumbing/cache"
- "gopkg.in/src-d/go-git.v4/plumbing/format/idxfile"
- "gopkg.in/src-d/go-git.v4/plumbing/format/packfile"
- "gopkg.in/src-d/go-git.v4/plumbing/storer"
- "gopkg.in/src-d/go-git.v4/storage/filesystem"
- "gopkg.in/src-d/go-git.v4/storage/memory"
-
- . "gopkg.in/check.v1"
- "gopkg.in/src-d/go-billy.v4/memfs"
- "gopkg.in/src-d/go-git-fixtures.v3"
-)
-
-type ReaderSuite struct {
- fixtures.Suite
-}
-
-var _ = Suite(&ReaderSuite{})
-
-func (s *ReaderSuite) TestNewDecodeNonSeekable(c *C) {
- scanner := packfile.NewScanner(nil)
- d, err := packfile.NewDecoder(scanner, nil)
-
- c.Assert(d, IsNil)
- c.Assert(err, NotNil)
-}
-
-func (s *ReaderSuite) TestDecode(c *C) {
- fixtures.Basic().ByTag("packfile").Test(c, func(f *fixtures.Fixture) {
- scanner := packfile.NewScanner(f.Packfile())
- storage := memory.NewStorage()
-
- d, err := packfile.NewDecoder(scanner, storage)
- c.Assert(err, IsNil)
- defer d.Close()
-
- ch, err := d.Decode()
- c.Assert(err, IsNil)
- c.Assert(ch, Equals, f.PackfileHash)
-
- assertObjects(c, storage, expectedHashes)
- })
-}
-
-func (s *ReaderSuite) TestDecodeByTypeRefDelta(c *C) {
- f := fixtures.Basic().ByTag("ref-delta").One()
-
- storage := memory.NewStorage()
- scanner := packfile.NewScanner(f.Packfile())
- d, err := packfile.NewDecoderForType(scanner, storage, plumbing.CommitObject,
- cache.NewObjectLRUDefault())
- c.Assert(err, IsNil)
-
- // Index required to decode by ref-delta.
- d.SetIndex(getIndexFromIdxFile(f.Idx()))
-
- defer d.Close()
-
- _, count, err := scanner.Header()
- c.Assert(err, IsNil)
-
- var i uint32
- for i = 0; i < count; i++ {
- obj, err := d.DecodeObject()
- c.Assert(err, IsNil)
-
- if obj != nil {
- c.Assert(obj.Type(), Equals, plumbing.CommitObject)
- }
- }
-}
-
-func (s *ReaderSuite) TestDecodeByTypeRefDeltaError(c *C) {
- fixtures.Basic().ByTag("ref-delta").Test(c, func(f *fixtures.Fixture) {
- storage := memory.NewStorage()
- scanner := packfile.NewScanner(f.Packfile())
- d, err := packfile.NewDecoderForType(scanner, storage,
- plumbing.CommitObject, cache.NewObjectLRUDefault())
- c.Assert(err, IsNil)
-
- defer d.Close()
-
- _, count, err := scanner.Header()
- c.Assert(err, IsNil)
-
- isError := false
- var i uint32
- for i = 0; i < count; i++ {
- _, err := d.DecodeObject()
- if err != nil {
- isError = true
- break
- }
- }
- c.Assert(isError, Equals, true)
- })
-
-}
-
-func (s *ReaderSuite) TestDecodeByType(c *C) {
- ts := []plumbing.ObjectType{
- plumbing.CommitObject,
- plumbing.TagObject,
- plumbing.TreeObject,
- plumbing.BlobObject,
- }
-
- fixtures.Basic().ByTag("packfile").Test(c, func(f *fixtures.Fixture) {
- for _, t := range ts {
- storage := memory.NewStorage()
- scanner := packfile.NewScanner(f.Packfile())
- d, err := packfile.NewDecoderForType(scanner, storage, t,
- cache.NewObjectLRUDefault())
- c.Assert(err, IsNil)
-
- // when the packfile is ref-delta based, the offsets are required
- if f.Is("ref-delta") {
- d.SetIndex(getIndexFromIdxFile(f.Idx()))
- }
-
- defer d.Close()
-
- _, count, err := scanner.Header()
- c.Assert(err, IsNil)
-
- var i uint32
- for i = 0; i < count; i++ {
- obj, err := d.DecodeObject()
- c.Assert(err, IsNil)
-
- if obj != nil {
- c.Assert(obj.Type(), Equals, t)
- }
- }
- }
- })
-}
-func (s *ReaderSuite) TestDecodeByTypeConstructor(c *C) {
- f := fixtures.Basic().ByTag("packfile").One()
- storage := memory.NewStorage()
- scanner := packfile.NewScanner(f.Packfile())
-
- _, err := packfile.NewDecoderForType(scanner, storage,
- plumbing.OFSDeltaObject, cache.NewObjectLRUDefault())
- c.Assert(err, Equals, plumbing.ErrInvalidType)
-
- _, err = packfile.NewDecoderForType(scanner, storage,
- plumbing.REFDeltaObject, cache.NewObjectLRUDefault())
-
- c.Assert(err, Equals, plumbing.ErrInvalidType)
-
- _, err = packfile.NewDecoderForType(scanner, storage, plumbing.InvalidObject,
- cache.NewObjectLRUDefault())
- c.Assert(err, Equals, plumbing.ErrInvalidType)
-}
-
-func (s *ReaderSuite) TestDecodeMultipleTimes(c *C) {
- f := fixtures.Basic().ByTag("packfile").One()
- scanner := packfile.NewScanner(f.Packfile())
- storage := memory.NewStorage()
-
- d, err := packfile.NewDecoder(scanner, storage)
- c.Assert(err, IsNil)
- defer d.Close()
-
- ch, err := d.Decode()
- c.Assert(err, IsNil)
- c.Assert(ch, Equals, f.PackfileHash)
-
- ch, err = d.Decode()
- c.Assert(err, Equals, packfile.ErrAlreadyDecoded)
- c.Assert(ch, Equals, plumbing.ZeroHash)
-}
-
-func (s *ReaderSuite) TestDecodeInMemory(c *C) {
- fixtures.Basic().ByTag("packfile").Test(c, func(f *fixtures.Fixture) {
- scanner := packfile.NewScanner(f.Packfile())
- d, err := packfile.NewDecoder(scanner, nil)
- c.Assert(err, IsNil)
-
- ch, err := d.Decode()
- c.Assert(err, IsNil)
- c.Assert(ch, Equals, f.PackfileHash)
- })
-}
-
-type nonSeekableReader struct {
- r io.Reader
-}
-
-func (nsr nonSeekableReader) Read(b []byte) (int, error) {
- return nsr.r.Read(b)
-}
-
-func (s *ReaderSuite) TestDecodeNoSeekableWithTxStorer(c *C) {
- fixtures.Basic().ByTag("packfile").Test(c, func(f *fixtures.Fixture) {
- reader := nonSeekableReader{
- r: f.Packfile(),
- }
-
- scanner := packfile.NewScanner(reader)
-
- var storage storer.EncodedObjectStorer = memory.NewStorage()
- _, isTxStorer := storage.(storer.Transactioner)
- c.Assert(isTxStorer, Equals, true)
-
- d, err := packfile.NewDecoder(scanner, storage)
- c.Assert(err, IsNil)
- defer d.Close()
-
- ch, err := d.Decode()
- c.Assert(err, IsNil)
- c.Assert(ch, Equals, f.PackfileHash)
-
- assertObjects(c, storage, expectedHashes)
- })
-}
-
-func (s *ReaderSuite) TestDecodeNoSeekableWithoutTxStorer(c *C) {
- fixtures.Basic().ByTag("packfile").Test(c, func(f *fixtures.Fixture) {
- reader := nonSeekableReader{
- r: f.Packfile(),
- }
-
- scanner := packfile.NewScanner(reader)
-
- var storage storer.EncodedObjectStorer
- storage, _ = filesystem.NewStorage(memfs.New())
- _, isTxStorer := storage.(storer.Transactioner)
- c.Assert(isTxStorer, Equals, false)
-
- d, err := packfile.NewDecoder(scanner, storage)
- c.Assert(err, IsNil)
- defer d.Close()
-
- ch, err := d.Decode()
- c.Assert(err, IsNil)
- c.Assert(ch, Equals, f.PackfileHash)
-
- assertObjects(c, storage, expectedHashes)
- })
-}
-
-var expectedHashes = []string{
- "918c48b83bd081e863dbe1b80f8998f058cd8294",
- "af2d6a6954d532f8ffb47615169c8fdf9d383a1a",
- "1669dce138d9b841a518c64b10914d88f5e488ea",
- "a5b8b09e2f8fcb0bb99d3ccb0958157b40890d69",
- "b8e471f58bcbca63b07bda20e428190409c2db47",
- "35e85108805c84807bc66a02d91535e1e24b38b9",
- "b029517f6300c2da0f4b651b8642506cd6aaf45d",
- "32858aad3c383ed1ff0a0f9bdf231d54a00c9e88",
- "d3ff53e0564a9f87d8e84b6e28e5060e517008aa",
- "c192bd6a24ea1ab01d78686e417c8bdc7c3d197f",
- "d5c0f4ab811897cadf03aec358ae60d21f91c50d",
- "49c6bb89b17060d7b4deacb7b338fcc6ea2352a9",
- "cf4aa3b38974fb7d81f367c0830f7d78d65ab86b",
- "9dea2395f5403188298c1dabe8bdafe562c491e3",
- "586af567d0bb5e771e49bdd9434f5e0fb76d25fa",
- "9a48f23120e880dfbe41f7c9b7b708e9ee62a492",
- "5a877e6a906a2743ad6e45d99c1793642aaf8eda",
- "c8f1d8c61f9da76f4cb49fd86322b6e685dba956",
- "a8d315b2b1c615d43042c3a62402b8a54288cf5c",
- "a39771a7651f97faf5c72e08224d857fc35133db",
- "880cd14280f4b9b6ed3986d6671f907d7cc2a198",
- "fb72698cab7617ac416264415f13224dfd7a165e",
- "4d081c50e250fa32ea8b1313cf8bb7c2ad7627fd",
- "eba74343e2f15d62adedfd8c883ee0262b5c8021",
- "c2d30fa8ef288618f65f6eed6e168e0d514886f4",
- "8dcef98b1d52143e1e2dbc458ffe38f925786bf2",
- "aa9b383c260e1d05fbbf6b30a02914555e20c725",
- "6ecf0ef2c2dffb796033e5a02219af86ec6584e5",
- "dbd3641b371024f44d0e469a9c8f5457b0660de1",
- "e8d3ffab552895c19b9fcf7aa264d277cde33881",
- "7e59600739c96546163833214c36459e324bad0a",
-}
-
-func (s *ReaderSuite) TestDecodeCRCs(c *C) {
- f := fixtures.Basic().ByTag("ofs-delta").One()
-
- scanner := packfile.NewScanner(f.Packfile())
- storage := memory.NewStorage()
-
- d, err := packfile.NewDecoder(scanner, storage)
- c.Assert(err, IsNil)
- _, err = d.Decode()
- c.Assert(err, IsNil)
-
- var sum uint64
- idx := d.Index().ToIdxFile()
- for _, e := range idx.Entries {
- sum += uint64(e.CRC32)
- }
-
- c.Assert(int(sum), Equals, 78022211966)
-}
-
-func (s *ReaderSuite) TestDecodeObjectAt(c *C) {
- f := fixtures.Basic().One()
- scanner := packfile.NewScanner(f.Packfile())
- d, err := packfile.NewDecoder(scanner, nil)
- c.Assert(err, IsNil)
-
- // when the packfile is ref-delta based, the offsets are required
- if f.Is("ref-delta") {
- d.SetIndex(getIndexFromIdxFile(f.Idx()))
- }
-
- // the objects at reference 186, is a delta, so should be recall,
- // without being read before.
- obj, err := d.DecodeObjectAt(186)
- c.Assert(err, IsNil)
- c.Assert(obj.Hash().String(), Equals, "6ecf0ef2c2dffb796033e5a02219af86ec6584e5")
-}
-
-func (s *ReaderSuite) TestDecodeObjectAtForType(c *C) {
- f := fixtures.Basic().One()
- scanner := packfile.NewScanner(f.Packfile())
- d, err := packfile.NewDecoderForType(scanner, nil, plumbing.TreeObject,
- cache.NewObjectLRUDefault())
- c.Assert(err, IsNil)
-
- // when the packfile is ref-delta based, the offsets are required
- if f.Is("ref-delta") {
- d.SetIndex(getIndexFromIdxFile(f.Idx()))
- }
-
- // the objects at reference 186, is a delta, so should be recall,
- // without being read before.
- obj, err := d.DecodeObjectAt(186)
- c.Assert(err, IsNil)
- c.Assert(obj.Type(), Equals, plumbing.CommitObject)
- c.Assert(obj.Hash().String(), Equals, "6ecf0ef2c2dffb796033e5a02219af86ec6584e5")
-}
-
-func (s *ReaderSuite) TestIndex(c *C) {
- f := fixtures.Basic().One()
- scanner := packfile.NewScanner(f.Packfile())
- d, err := packfile.NewDecoder(scanner, nil)
- c.Assert(err, IsNil)
-
- c.Assert(d.Index().ToIdxFile().Entries, HasLen, 0)
-
- _, err = d.Decode()
- c.Assert(err, IsNil)
-
- c.Assert(len(d.Index().ToIdxFile().Entries), Equals, 31)
-}
-
-func (s *ReaderSuite) TestSetIndex(c *C) {
- f := fixtures.Basic().One()
- scanner := packfile.NewScanner(f.Packfile())
- d, err := packfile.NewDecoder(scanner, nil)
- c.Assert(err, IsNil)
-
- idx := packfile.NewIndex(1)
- h := plumbing.NewHash("6ecf0ef2c2dffb796033e5a02219af86ec6584e5")
- idx.Add(h, uint64(42), 0)
- d.SetIndex(idx)
-
- idxf := d.Index().ToIdxFile()
- c.Assert(idxf.Entries, HasLen, 1)
- c.Assert(idxf.Entries[0].Offset, Equals, uint64(42))
-}
-
-func assertObjects(c *C, s storer.EncodedObjectStorer, expects []string) {
-
- i, err := s.IterEncodedObjects(plumbing.AnyObject)
- c.Assert(err, IsNil)
-
- var count int
- err = i.ForEach(func(plumbing.EncodedObject) error { count++; return nil })
- c.Assert(err, IsNil)
- c.Assert(count, Equals, len(expects))
-
- for _, exp := range expects {
- obt, err := s.EncodedObject(plumbing.AnyObject, plumbing.NewHash(exp))
- c.Assert(err, IsNil)
- c.Assert(obt.Hash().String(), Equals, exp)
- }
-}
-
-func getIndexFromIdxFile(r io.Reader) *packfile.Index {
- idxf := idxfile.NewIdxfile()
- d := idxfile.NewDecoder(r)
- if err := d.Decode(idxf); err != nil {
- panic(err)
- }
-
- return packfile.NewIndexFromIdxFile(idxf)
-}
diff --git a/plumbing/format/packfile/encoder_advanced_test.go b/plumbing/format/packfile/encoder_advanced_test.go
index 8cc7180..fc1419e 100644
--- a/plumbing/format/packfile/encoder_advanced_test.go
+++ b/plumbing/format/packfile/encoder_advanced_test.go
@@ -2,14 +2,16 @@
import (
"bytes"
+ "io"
"math/rand"
"testing"
+ "gopkg.in/src-d/go-billy.v4/memfs"
"gopkg.in/src-d/go-git.v4/plumbing"
+ "gopkg.in/src-d/go-git.v4/plumbing/format/idxfile"
. "gopkg.in/src-d/go-git.v4/plumbing/format/packfile"
"gopkg.in/src-d/go-git.v4/plumbing/storer"
"gopkg.in/src-d/go-git.v4/storage/filesystem"
- "gopkg.in/src-d/go-git.v4/storage/memory"
. "gopkg.in/check.v1"
"gopkg.in/src-d/go-git-fixtures.v3"
@@ -34,7 +36,6 @@
c.Assert(err, IsNil)
s.testEncodeDecode(c, storage, 10)
})
-
}
func (s *EncoderAdvancedSuite) TestEncodeDecodeNoDeltaCompression(c *C) {
@@ -52,8 +53,11 @@
})
}
-func (s *EncoderAdvancedSuite) testEncodeDecode(c *C, storage storer.Storer, packWindow uint) {
-
+func (s *EncoderAdvancedSuite) testEncodeDecode(
+ c *C,
+ storage storer.Storer,
+ packWindow uint,
+) {
objIter, err := storage.IterEncodedObjects(plumbing.AnyObject)
c.Assert(err, IsNil)
@@ -80,16 +84,35 @@
encodeHash, err := enc.Encode(hashes, packWindow)
c.Assert(err, IsNil)
- scanner := NewScanner(buf)
- storage = memory.NewStorage()
- d, err := NewDecoder(scanner, storage)
- c.Assert(err, IsNil)
- decodeHash, err := d.Decode()
+ fs := memfs.New()
+ f, err := fs.Create("packfile")
c.Assert(err, IsNil)
+ _, err = f.Write(buf.Bytes())
+ c.Assert(err, IsNil)
+
+ _, err = f.Seek(0, io.SeekStart)
+ c.Assert(err, IsNil)
+
+ w := new(idxfile.Writer)
+ parser, err := NewParser(NewScanner(f), w)
+ c.Assert(err, IsNil)
+
+ _, err = parser.Parse()
+ c.Assert(err, IsNil)
+ index, err := w.Index()
+ c.Assert(err, IsNil)
+
+ _, err = f.Seek(0, io.SeekStart)
+ c.Assert(err, IsNil)
+
+ p := NewPackfile(index, fs, f)
+
+ decodeHash, err := p.ID()
+ c.Assert(err, IsNil)
c.Assert(encodeHash, Equals, decodeHash)
- objIter, err = storage.IterEncodedObjects(plumbing.AnyObject)
+ objIter, err = p.GetAll()
c.Assert(err, IsNil)
obtainedObjects := map[plumbing.Hash]bool{}
err = objIter.ForEach(func(o plumbing.EncodedObject) error {
diff --git a/plumbing/format/packfile/encoder_test.go b/plumbing/format/packfile/encoder_test.go
index 84d03fb..80b916d 100644
--- a/plumbing/format/packfile/encoder_test.go
+++ b/plumbing/format/packfile/encoder_test.go
@@ -2,8 +2,12 @@
import (
"bytes"
+ "io"
+ stdioutil "io/ioutil"
+ "gopkg.in/src-d/go-billy.v4/memfs"
"gopkg.in/src-d/go-git.v4/plumbing"
+ "gopkg.in/src-d/go-git.v4/plumbing/format/idxfile"
"gopkg.in/src-d/go-git.v4/storage/memory"
. "gopkg.in/check.v1"
@@ -130,24 +134,20 @@
})
c.Assert(err, IsNil)
- scanner := NewScanner(s.buf)
-
- storage := memory.NewStorage()
- d, err := NewDecoder(scanner, storage)
- c.Assert(err, IsNil)
-
- decHash, err := d.Decode()
+ p, cleanup := packfileFromReader(c, s.buf)
+ defer cleanup()
+ decHash, err := p.ID()
c.Assert(err, IsNil)
c.Assert(encHash, Equals, decHash)
- decSrc, err := storage.EncodedObject(srcObject.Type(), srcObject.Hash())
+ decSrc, err := p.Get(srcObject.Hash())
c.Assert(err, IsNil)
- c.Assert(decSrc, DeepEquals, srcObject)
+ objectsEqual(c, decSrc, srcObject)
- decTarget, err := storage.EncodedObject(targetObject.Type(), targetObject.Hash())
+ decTarget, err := p.Get(targetObject.Hash())
c.Assert(err, IsNil)
- c.Assert(decTarget, DeepEquals, targetObject)
+ objectsEqual(c, decTarget, targetObject)
}
func (s *EncoderSuite) deltaOverDeltaTest(c *C) {
@@ -173,27 +173,24 @@
})
c.Assert(err, IsNil)
- scanner := NewScanner(s.buf)
- storage := memory.NewStorage()
- d, err := NewDecoder(scanner, storage)
- c.Assert(err, IsNil)
-
- decHash, err := d.Decode()
+ p, cleanup := packfileFromReader(c, s.buf)
+ defer cleanup()
+ decHash, err := p.ID()
c.Assert(err, IsNil)
c.Assert(encHash, Equals, decHash)
- decSrc, err := storage.EncodedObject(srcObject.Type(), srcObject.Hash())
+ decSrc, err := p.Get(srcObject.Hash())
c.Assert(err, IsNil)
- c.Assert(decSrc, DeepEquals, srcObject)
+ objectsEqual(c, decSrc, srcObject)
- decTarget, err := storage.EncodedObject(targetObject.Type(), targetObject.Hash())
+ decTarget, err := p.Get(targetObject.Hash())
c.Assert(err, IsNil)
- c.Assert(decTarget, DeepEquals, targetObject)
+ objectsEqual(c, decTarget, targetObject)
- decOtherTarget, err := storage.EncodedObject(otherTargetObject.Type(), otherTargetObject.Hash())
+ decOtherTarget, err := p.Get(otherTargetObject.Hash())
c.Assert(err, IsNil)
- c.Assert(decOtherTarget, DeepEquals, otherTargetObject)
+ objectsEqual(c, decOtherTarget, otherTargetObject)
}
func (s *EncoderSuite) deltaOverDeltaCyclicTest(c *C) {
@@ -248,29 +245,74 @@
})
c.Assert(err, IsNil)
- scanner := NewScanner(s.buf)
- storage := memory.NewStorage()
- d, err := NewDecoder(scanner, storage)
- c.Assert(err, IsNil)
-
- decHash, err := d.Decode()
+ p, cleanup := packfileFromReader(c, s.buf)
+ defer cleanup()
+ decHash, err := p.ID()
c.Assert(err, IsNil)
c.Assert(encHash, Equals, decHash)
- decSrc, err := storage.EncodedObject(o1.Type(), o1.Hash())
+ decSrc, err := p.Get(o1.Hash())
c.Assert(err, IsNil)
- c.Assert(decSrc, DeepEquals, o1)
+ objectsEqual(c, decSrc, o1)
- decTarget, err := storage.EncodedObject(o2.Type(), o2.Hash())
+ decTarget, err := p.Get(o2.Hash())
c.Assert(err, IsNil)
- c.Assert(decTarget, DeepEquals, o2)
+ objectsEqual(c, decTarget, o2)
- decOtherTarget, err := storage.EncodedObject(o3.Type(), o3.Hash())
+ decOtherTarget, err := p.Get(o3.Hash())
c.Assert(err, IsNil)
- c.Assert(decOtherTarget, DeepEquals, o3)
+ objectsEqual(c, decOtherTarget, o3)
- decAnotherTarget, err := storage.EncodedObject(o4.Type(), o4.Hash())
+ decAnotherTarget, err := p.Get(o4.Hash())
c.Assert(err, IsNil)
- c.Assert(decAnotherTarget, DeepEquals, o4)
+ objectsEqual(c, decAnotherTarget, o4)
+}
+
+func objectsEqual(c *C, o1, o2 plumbing.EncodedObject) {
+ c.Assert(o1.Type(), Equals, o2.Type())
+ c.Assert(o1.Hash(), Equals, o2.Hash())
+ c.Assert(o1.Size(), Equals, o2.Size())
+
+ r1, err := o1.Reader()
+ c.Assert(err, IsNil)
+
+ b1, err := stdioutil.ReadAll(r1)
+ c.Assert(err, IsNil)
+
+ r2, err := o2.Reader()
+ c.Assert(err, IsNil)
+
+ b2, err := stdioutil.ReadAll(r2)
+ c.Assert(err, IsNil)
+
+ c.Assert(bytes.Compare(b1, b2), Equals, 0)
+}
+
+func packfileFromReader(c *C, buf *bytes.Buffer) (*Packfile, func()) {
+ fs := memfs.New()
+ file, err := fs.Create("packfile")
+ c.Assert(err, IsNil)
+
+ _, err = file.Write(buf.Bytes())
+ c.Assert(err, IsNil)
+
+ _, err = file.Seek(0, io.SeekStart)
+ c.Assert(err, IsNil)
+
+ scanner := NewScanner(file)
+
+ w := new(idxfile.Writer)
+ p, err := NewParser(scanner, w)
+ c.Assert(err, IsNil)
+
+ _, err = p.Parse()
+ c.Assert(err, IsNil)
+
+ index, err := w.Index()
+ c.Assert(err, IsNil)
+
+ return NewPackfile(index, fs, file), func() {
+ c.Assert(file.Close(), IsNil)
+ }
}
diff --git a/plumbing/format/packfile/fsobject.go b/plumbing/format/packfile/fsobject.go
new file mode 100644
index 0000000..330cb73
--- /dev/null
+++ b/plumbing/format/packfile/fsobject.go
@@ -0,0 +1,116 @@
+package packfile
+
+import (
+ "io"
+
+ billy "gopkg.in/src-d/go-billy.v4"
+ "gopkg.in/src-d/go-git.v4/plumbing"
+ "gopkg.in/src-d/go-git.v4/plumbing/cache"
+ "gopkg.in/src-d/go-git.v4/plumbing/format/idxfile"
+)
+
+// FSObject is an object from the packfile on the filesystem.
+type FSObject struct {
+ hash plumbing.Hash
+ h *ObjectHeader
+ offset int64
+ size int64
+ typ plumbing.ObjectType
+ index idxfile.Index
+ fs billy.Filesystem
+ path string
+ cache cache.Object
+}
+
+// NewFSObject creates a new filesystem object.
+func NewFSObject(
+ hash plumbing.Hash,
+ finalType plumbing.ObjectType,
+ offset int64,
+ contentSize int64,
+ index idxfile.Index,
+ fs billy.Filesystem,
+ path string,
+ cache cache.Object,
+) *FSObject {
+ return &FSObject{
+ hash: hash,
+ offset: offset,
+ size: contentSize,
+ typ: finalType,
+ index: index,
+ fs: fs,
+ path: path,
+ cache: cache,
+ }
+}
+
+// Reader implements the plumbing.EncodedObject interface.
+func (o *FSObject) Reader() (io.ReadCloser, error) {
+ obj, ok := o.cache.Get(o.hash)
+ if ok {
+ reader, err := obj.Reader()
+ if err != nil {
+ return nil, err
+ }
+
+ return reader, nil
+ }
+
+ f, err := o.fs.Open(o.path)
+ if err != nil {
+ return nil, err
+ }
+
+ p := NewPackfileWithCache(o.index, nil, f, o.cache)
+ r, err := p.getObjectContent(o.offset)
+ if err != nil {
+ _ = f.Close()
+ return nil, err
+ }
+
+ if err := f.Close(); err != nil {
+ return nil, err
+ }
+
+ return r, nil
+}
+
+// SetSize implements the plumbing.EncodedObject interface. This method
+// is a noop.
+func (o *FSObject) SetSize(int64) {}
+
+// SetType implements the plumbing.EncodedObject interface. This method is
+// a noop.
+func (o *FSObject) SetType(plumbing.ObjectType) {}
+
+// Hash implements the plumbing.EncodedObject interface.
+func (o *FSObject) Hash() plumbing.Hash { return o.hash }
+
+// Size implements the plumbing.EncodedObject interface.
+func (o *FSObject) Size() int64 { return o.size }
+
+// Type implements the plumbing.EncodedObject interface.
+func (o *FSObject) Type() plumbing.ObjectType {
+ return o.typ
+}
+
+// Writer implements the plumbing.EncodedObject interface. This method always
+// returns a nil writer.
+func (o *FSObject) Writer() (io.WriteCloser, error) {
+ return nil, nil
+}
+
+type objectReader struct {
+ io.ReadCloser
+ f billy.File
+}
+
+func (r *objectReader) Close() error {
+ if err := r.ReadCloser.Close(); err != nil {
+ _ = r.f.Close()
+ return err
+ }
+
+ return r.f.Close()
+}
diff --git a/plumbing/format/packfile/index.go b/plumbing/format/packfile/index.go
deleted file mode 100644
index 021b2d1..0000000
--- a/plumbing/format/packfile/index.go
+++ /dev/null
@@ -1,125 +0,0 @@
-package packfile
-
-import (
- "sort"
-
- "gopkg.in/src-d/go-git.v4/plumbing"
- "gopkg.in/src-d/go-git.v4/plumbing/format/idxfile"
-)
-
-// Index is an in-memory representation of a packfile index.
-// This uses idxfile.Idxfile under the hood to obtain indexes from .idx files
-// or to store them.
-type Index struct {
- byHash map[plumbing.Hash]*idxfile.Entry
- byOffset []*idxfile.Entry // sorted by their offset
-}
-
-// NewIndex creates a new empty index with the given size. Size is a hint and
-// can be 0. It is recommended to set it to the number of objects to be indexed
-// if it is known beforehand (e.g. reading from a packfile).
-func NewIndex(size int) *Index {
- return &Index{
- byHash: make(map[plumbing.Hash]*idxfile.Entry, size),
- byOffset: make([]*idxfile.Entry, 0, size),
- }
-}
-
-// NewIndexFromIdxFile creates a new Index from an idxfile.IdxFile.
-func NewIndexFromIdxFile(idxf *idxfile.Idxfile) *Index {
- idx := &Index{
- byHash: make(map[plumbing.Hash]*idxfile.Entry, idxf.ObjectCount),
- byOffset: make([]*idxfile.Entry, 0, idxf.ObjectCount),
- }
- sorted := true
- for i, e := range idxf.Entries {
- idx.addUnsorted(e)
- if i > 0 && idx.byOffset[i-1].Offset >= e.Offset {
- sorted = false
- }
- }
-
- // If the idxfile was loaded from a regular packfile index
- // then it will already be in offset order, in which case we
- // can avoid doing a relatively expensive idempotent sort.
- if !sorted {
- sort.Sort(orderByOffset(idx.byOffset))
- }
-
- return idx
-}
-
-// orderByOffset is a sort.Interface adapter that arranges
-// a slice of entries by their offset.
-type orderByOffset []*idxfile.Entry
-
-func (o orderByOffset) Len() int { return len(o) }
-func (o orderByOffset) Less(i, j int) bool { return o[i].Offset < o[j].Offset }
-func (o orderByOffset) Swap(i, j int) { o[i], o[j] = o[j], o[i] }
-
-// Add adds a new Entry with the given values to the index.
-func (idx *Index) Add(h plumbing.Hash, offset uint64, crc32 uint32) {
- e := &idxfile.Entry{
- Hash: h,
- Offset: offset,
- CRC32: crc32,
- }
- idx.byHash[e.Hash] = e
-
- // Find the right position in byOffset.
- // Look for the first position whose offset is *greater* than e.Offset.
- i := sort.Search(len(idx.byOffset), func(i int) bool {
- return idx.byOffset[i].Offset > offset
- })
- if i == len(idx.byOffset) {
- // Simple case: add it to the end.
- idx.byOffset = append(idx.byOffset, e)
- return
- }
- // Harder case: shift existing entries down by one to make room.
- // Append a nil entry first so we can use existing capacity in case
- // the index was carefully preallocated.
- idx.byOffset = append(idx.byOffset, nil)
- copy(idx.byOffset[i+1:], idx.byOffset[i:len(idx.byOffset)-1])
- idx.byOffset[i] = e
-}
-
-func (idx *Index) addUnsorted(e *idxfile.Entry) {
- idx.byHash[e.Hash] = e
- idx.byOffset = append(idx.byOffset, e)
-}
-
-// LookupHash looks an entry up by its hash. An idxfile.Entry is returned and
-// a bool, which is true if it was found or false if it wasn't.
-func (idx *Index) LookupHash(h plumbing.Hash) (*idxfile.Entry, bool) {
- e, ok := idx.byHash[h]
- return e, ok
-}
-
-// LookupHash looks an entry up by its offset in the packfile. An idxfile.Entry
-// is returned and a bool, which is true if it was found or false if it wasn't.
-func (idx *Index) LookupOffset(offset uint64) (*idxfile.Entry, bool) {
- i := sort.Search(len(idx.byOffset), func(i int) bool {
- return idx.byOffset[i].Offset >= offset
- })
- if i >= len(idx.byOffset) || idx.byOffset[i].Offset != offset {
- return nil, false // not present
- }
- return idx.byOffset[i], true
-}
-
-// Size returns the number of entries in the index.
-func (idx *Index) Size() int {
- return len(idx.byHash)
-}
-
-// ToIdxFile converts the index to an idxfile.Idxfile, which can then be used
-// to serialize.
-func (idx *Index) ToIdxFile() *idxfile.Idxfile {
- idxf := idxfile.NewIdxfile()
- for _, e := range idx.byHash {
- idxf.Entries = append(idxf.Entries, e)
- }
-
- return idxf
-}
diff --git a/plumbing/format/packfile/index_test.go b/plumbing/format/packfile/index_test.go
deleted file mode 100644
index 8de886d..0000000
--- a/plumbing/format/packfile/index_test.go
+++ /dev/null
@@ -1,133 +0,0 @@
-package packfile
-
-import (
- "strconv"
- "strings"
- "testing"
-
- "gopkg.in/src-d/go-git.v4/plumbing"
-
- . "gopkg.in/check.v1"
-)
-
-type IndexSuite struct{}
-
-var _ = Suite(&IndexSuite{})
-
-func (s *IndexSuite) TestLookupOffset(c *C) {
- idx := NewIndex(0)
-
- for o1 := 0; o1 < 10000; o1 += 100 {
- for o2 := 0; o2 < 10000; o2 += 100 {
- if o2 >= o1 {
- e, ok := idx.LookupOffset(uint64(o2))
- c.Assert(ok, Equals, false)
- c.Assert(e, IsNil)
- } else {
- e, ok := idx.LookupOffset(uint64(o2))
- c.Assert(ok, Equals, true)
- c.Assert(e, NotNil)
- c.Assert(e.Hash, Equals, toHash(o2))
- c.Assert(e.Offset, Equals, uint64(o2))
- }
- }
-
- h1 := toHash(o1)
- idx.Add(h1, uint64(o1), 0)
-
- for o2 := 0; o2 < 10000; o2 += 100 {
- if o2 > o1 {
- e, ok := idx.LookupOffset(uint64(o2))
- c.Assert(ok, Equals, false)
- c.Assert(e, IsNil)
- } else {
- e, ok := idx.LookupOffset(uint64(o2))
- c.Assert(ok, Equals, true)
- c.Assert(e, NotNil)
- c.Assert(e.Hash, Equals, toHash(o2))
- c.Assert(e.Offset, Equals, uint64(o2))
- }
- }
- }
-}
-
-func (s *IndexSuite) TestLookupHash(c *C) {
- idx := NewIndex(0)
-
- for o1 := 0; o1 < 10000; o1 += 100 {
- for o2 := 0; o2 < 10000; o2 += 100 {
- if o2 >= o1 {
- e, ok := idx.LookupHash(toHash(o2))
- c.Assert(ok, Equals, false)
- c.Assert(e, IsNil)
- } else {
- e, ok := idx.LookupHash(toHash(o2))
- c.Assert(ok, Equals, true)
- c.Assert(e, NotNil)
- c.Assert(e.Hash, Equals, toHash(o2))
- c.Assert(e.Offset, Equals, uint64(o2))
- }
- }
-
- h1 := toHash(o1)
- idx.Add(h1, uint64(o1), 0)
-
- for o2 := 0; o2 < 10000; o2 += 100 {
- if o2 > o1 {
- e, ok := idx.LookupHash(toHash(o2))
- c.Assert(ok, Equals, false)
- c.Assert(e, IsNil)
- } else {
- e, ok := idx.LookupHash(toHash(o2))
- c.Assert(ok, Equals, true)
- c.Assert(e, NotNil)
- c.Assert(e.Hash, Equals, toHash(o2))
- c.Assert(e.Offset, Equals, uint64(o2))
- }
- }
- }
-}
-
-func (s *IndexSuite) TestSize(c *C) {
- idx := NewIndex(0)
-
- for o1 := 0; o1 < 1000; o1++ {
- c.Assert(idx.Size(), Equals, o1)
- h1 := toHash(o1)
- idx.Add(h1, uint64(o1), 0)
- }
-}
-
-func (s *IndexSuite) TestIdxFileEmpty(c *C) {
- idx := NewIndex(0)
- idxf := idx.ToIdxFile()
- idx2 := NewIndexFromIdxFile(idxf)
- c.Assert(idx, DeepEquals, idx2)
-}
-
-func (s *IndexSuite) TestIdxFile(c *C) {
- idx := NewIndex(0)
- for o1 := 0; o1 < 1000; o1++ {
- h1 := toHash(o1)
- idx.Add(h1, uint64(o1), 0)
- }
-
- idx2 := NewIndexFromIdxFile(idx.ToIdxFile())
- c.Assert(idx, DeepEquals, idx2)
-}
-
-func toHash(i int) plumbing.Hash {
- is := strconv.Itoa(i)
- padding := strings.Repeat("a", 40-len(is))
- return plumbing.NewHash(padding + is)
-}
-
-func BenchmarkIndexConstruction(b *testing.B) {
- b.ReportAllocs()
-
- idx := NewIndex(0)
- for o := 0; o < 1e6*b.N; o += 100 {
- h1 := toHash(o)
- idx.Add(h1, uint64(o), 0)
- }
-}
diff --git a/plumbing/format/packfile/packfile.go b/plumbing/format/packfile/packfile.go
new file mode 100644
index 0000000..852a834
--- /dev/null
+++ b/plumbing/format/packfile/packfile.go
@@ -0,0 +1,520 @@
+package packfile
+
+import (
+ "bytes"
+ "io"
+ "os"
+
+ billy "gopkg.in/src-d/go-billy.v4"
+ "gopkg.in/src-d/go-git.v4/plumbing"
+ "gopkg.in/src-d/go-git.v4/plumbing/cache"
+ "gopkg.in/src-d/go-git.v4/plumbing/format/idxfile"
+ "gopkg.in/src-d/go-git.v4/plumbing/storer"
+)
+
+var (
+ // ErrInvalidObject is returned by Decode when an invalid object is
+ // found in the packfile.
+ ErrInvalidObject = NewError("invalid git object")
+ // ErrZLib is returned by Decode when there was an error unzipping
+ // the packfile contents.
+ ErrZLib = NewError("zlib reading error")
+)
+
+// Packfile allows retrieving information from inside a packfile.
+type Packfile struct {
+ idxfile.Index
+ fs billy.Filesystem
+ file billy.File
+ s *Scanner
+ deltaBaseCache cache.Object
+ offsetToType map[int64]plumbing.ObjectType
+}
+
+// NewPackfileWithCache creates a new Packfile with the given object cache.
+// If the filesystem is provided, the packfile will return FSObjects, otherwise
+// it will return MemoryObjects.
+func NewPackfileWithCache(
+ index idxfile.Index,
+ fs billy.Filesystem,
+ file billy.File,
+ cache cache.Object,
+) *Packfile {
+ s := NewScanner(file)
+ return &Packfile{
+ index,
+ fs,
+ file,
+ s,
+ cache,
+ make(map[int64]plumbing.ObjectType),
+ }
+}
+
+// NewPackfile returns a packfile representation for the given packfile file
+// and packfile idx.
+// If the filesystem is provided, the packfile will return FSObjects, otherwise
+// it will return MemoryObjects.
+func NewPackfile(index idxfile.Index, fs billy.Filesystem, file billy.File) *Packfile {
+ return NewPackfileWithCache(index, fs, file, cache.NewObjectLRUDefault())
+}
+
+// Get retrieves the encoded object in the packfile with the given hash.
+func (p *Packfile) Get(h plumbing.Hash) (plumbing.EncodedObject, error) {
+ offset, err := p.FindOffset(h)
+ if err != nil {
+ return nil, err
+ }
+
+ return p.GetByOffset(offset)
+}
+
+// GetByOffset retrieves the encoded object from the packfile with the given
+// offset.
+func (p *Packfile) GetByOffset(o int64) (plumbing.EncodedObject, error) {
+ hash, err := p.FindHash(o)
+ if err == nil {
+ if obj, ok := p.deltaBaseCache.Get(hash); ok {
+ return obj, nil
+ }
+ }
+
+ if _, err := p.s.SeekFromStart(o); err != nil {
+ if err == io.EOF || isInvalid(err) {
+ return nil, plumbing.ErrObjectNotFound
+ }
+
+ return nil, err
+ }
+
+ return p.nextObject()
+}
+
+func (p *Packfile) nextObjectHeader() (*ObjectHeader, error) {
+ h, err := p.s.NextObjectHeader()
+ p.s.pendingObject = nil
+ return h, err
+}
+
+func (p *Packfile) getObjectData(
+ h *ObjectHeader,
+) (typ plumbing.ObjectType, size int64, err error) {
+ switch h.Type {
+ case plumbing.CommitObject, plumbing.TreeObject, plumbing.BlobObject, plumbing.TagObject:
+ typ = h.Type
+ size = h.Length
+ case plumbing.REFDeltaObject, plumbing.OFSDeltaObject:
+ buf := bufPool.Get().(*bytes.Buffer)
+ buf.Reset()
+ defer bufPool.Put(buf)
+
+ _, _, err = p.s.NextObject(buf)
+ if err != nil {
+ return
+ }
+
+ delta := buf.Bytes()
+ _, delta = decodeLEB128(delta) // skip src size
+ sz, _ := decodeLEB128(delta)
+ size = int64(sz)
+
+ var offset int64
+ if h.Type == plumbing.REFDeltaObject {
+ offset, err = p.FindOffset(h.Reference)
+ if err != nil {
+ return
+ }
+ } else {
+ offset = h.OffsetReference
+ }
+
+ if baseType, ok := p.offsetToType[offset]; ok {
+ typ = baseType
+ } else {
+ if _, err = p.s.SeekFromStart(offset); err != nil {
+ return
+ }
+
+ h, err = p.nextObjectHeader()
+ if err != nil {
+ return
+ }
+
+ typ, _, err = p.getObjectData(h)
+ if err != nil {
+ return
+ }
+ }
+ default:
+ err = ErrInvalidObject.AddDetails("type %q", h.Type)
+ }
+
+ return
+}
+
+func (p *Packfile) getObjectSize(h *ObjectHeader) (int64, error) {
+ switch h.Type {
+ case plumbing.CommitObject, plumbing.TreeObject, plumbing.BlobObject, plumbing.TagObject:
+ return h.Length, nil
+ case plumbing.REFDeltaObject, plumbing.OFSDeltaObject:
+ buf := bufPool.Get().(*bytes.Buffer)
+ buf.Reset()
+ defer bufPool.Put(buf)
+
+ if _, _, err := p.s.NextObject(buf); err != nil {
+ return 0, err
+ }
+
+ delta := buf.Bytes()
+ _, delta = decodeLEB128(delta) // skip src size
+ sz, _ := decodeLEB128(delta)
+ return int64(sz), nil
+ default:
+ return 0, ErrInvalidObject.AddDetails("type %q", h.Type)
+ }
+}
+
+func (p *Packfile) getObjectType(h *ObjectHeader) (typ plumbing.ObjectType, err error) {
+ switch h.Type {
+ case plumbing.CommitObject, plumbing.TreeObject, plumbing.BlobObject, plumbing.TagObject:
+ return h.Type, nil
+ case plumbing.REFDeltaObject, plumbing.OFSDeltaObject:
+ var offset int64
+ if h.Type == plumbing.REFDeltaObject {
+ offset, err = p.FindOffset(h.Reference)
+ if err != nil {
+ return
+ }
+ } else {
+ offset = h.OffsetReference
+ }
+
+ if baseType, ok := p.offsetToType[offset]; ok {
+ typ = baseType
+ } else {
+ if _, err = p.s.SeekFromStart(offset); err != nil {
+ return
+ }
+
+ h, err = p.nextObjectHeader()
+ if err != nil {
+ return
+ }
+
+ typ, err = p.getObjectType(h)
+ if err != nil {
+ return
+ }
+ }
+ default:
+ err = ErrInvalidObject.AddDetails("type %q", h.Type)
+ }
+
+ return
+}
+
+func (p *Packfile) nextObject() (plumbing.EncodedObject, error) {
+ h, err := p.nextObjectHeader()
+ if err != nil {
+ if err == io.EOF || isInvalid(err) {
+ return nil, plumbing.ErrObjectNotFound
+ }
+ return nil, err
+ }
+
+ // If we have no filesystem, we will return a MemoryObject instead
+ // of an FSObject.
+ if p.fs == nil {
+ return p.getNextObject(h)
+ }
+
+ hash, err := p.FindHash(h.Offset)
+ if err != nil {
+ return nil, err
+ }
+
+ size, err := p.getObjectSize(h)
+ if err != nil {
+ return nil, err
+ }
+
+ typ, err := p.getObjectType(h)
+ if err != nil {
+ return nil, err
+ }
+
+ p.offsetToType[h.Offset] = typ
+
+ return NewFSObject(
+ hash,
+ typ,
+ h.Offset,
+ size,
+ p.Index,
+ p.fs,
+ p.file.Name(),
+ p.deltaBaseCache,
+ ), nil
+}
+
+func (p *Packfile) getObjectContent(offset int64) (io.ReadCloser, error) {
+ ref, err := p.FindHash(offset)
+ if err == nil {
+ obj, ok := p.cacheGet(ref)
+ if ok {
+ reader, err := obj.Reader()
+ if err != nil {
+ return nil, err
+ }
+
+ return reader, nil
+ }
+ }
+
+ if _, err := p.s.SeekFromStart(offset); err != nil {
+ return nil, err
+ }
+
+ h, err := p.nextObjectHeader()
+ if err != nil {
+ return nil, err
+ }
+
+ obj, err := p.getNextObject(h)
+ if err != nil {
+ return nil, err
+ }
+
+ return obj.Reader()
+}
+
+func (p *Packfile) getNextObject(h *ObjectHeader) (plumbing.EncodedObject, error) {
+ var obj = new(plumbing.MemoryObject)
+ obj.SetSize(h.Length)
+ obj.SetType(h.Type)
+
+ var err error
+ switch h.Type {
+ case plumbing.CommitObject, plumbing.TreeObject, plumbing.BlobObject, plumbing.TagObject:
+ err = p.fillRegularObjectContent(obj)
+ case plumbing.REFDeltaObject:
+ err = p.fillREFDeltaObjectContent(obj, h.Reference)
+ case plumbing.OFSDeltaObject:
+ err = p.fillOFSDeltaObjectContent(obj, h.OffsetReference)
+ default:
+ err = ErrInvalidObject.AddDetails("type %q", h.Type)
+ }
+
+ if err != nil {
+ return nil, err
+ }
+
+ return obj, nil
+}
+
+func (p *Packfile) fillRegularObjectContent(obj plumbing.EncodedObject) error {
+ w, err := obj.Writer()
+ if err != nil {
+ return err
+ }
+
+ _, _, err = p.s.NextObject(w)
+ p.cachePut(obj)
+
+ return err
+}
+
+func (p *Packfile) fillREFDeltaObjectContent(obj plumbing.EncodedObject, ref plumbing.Hash) error {
+ buf := bufPool.Get().(*bytes.Buffer)
+ buf.Reset()
+ _, _, err := p.s.NextObject(buf)
+ if err != nil {
+ return err
+ }
+
+ base, ok := p.cacheGet(ref)
+ if !ok {
+ base, err = p.Get(ref)
+ if err != nil {
+ return err
+ }
+ }
+
+ obj.SetType(base.Type())
+ err = ApplyDelta(obj, base, buf.Bytes())
+ p.cachePut(obj)
+ bufPool.Put(buf)
+
+ return err
+}
+
+func (p *Packfile) fillOFSDeltaObjectContent(obj plumbing.EncodedObject, offset int64) error {
+ buf := bytes.NewBuffer(nil)
+ _, _, err := p.s.NextObject(buf)
+ if err != nil {
+ return err
+ }
+
+ var base plumbing.EncodedObject
+ var ok bool
+ hash, err := p.FindHash(offset)
+ if err == nil {
+ base, ok = p.cacheGet(hash)
+ }
+
+ if !ok {
+ base, err = p.GetByOffset(offset)
+ if err != nil {
+ return err
+ }
+
+ p.cachePut(base)
+ }
+
+ obj.SetType(base.Type())
+ err = ApplyDelta(obj, base, buf.Bytes())
+ p.cachePut(obj)
+
+ return err
+}
+
+func (p *Packfile) cacheGet(h plumbing.Hash) (plumbing.EncodedObject, bool) {
+ if p.deltaBaseCache == nil {
+ return nil, false
+ }
+
+ return p.deltaBaseCache.Get(h)
+}
+
+func (p *Packfile) cachePut(obj plumbing.EncodedObject) {
+ if p.deltaBaseCache == nil {
+ return
+ }
+
+ p.deltaBaseCache.Put(obj)
+}
+
+// GetAll returns an iterator with all encoded objects in the packfile.
+// The iterator returned is not thread-safe, it should be used in the same
+// thread as the Packfile instance.
+func (p *Packfile) GetAll() (storer.EncodedObjectIter, error) {
+ return p.GetByType(plumbing.AnyObject)
+}
+
+// GetByType returns all the objects of the given type.
+func (p *Packfile) GetByType(typ plumbing.ObjectType) (storer.EncodedObjectIter, error) {
+ switch typ {
+ case plumbing.AnyObject,
+ plumbing.BlobObject,
+ plumbing.TreeObject,
+ plumbing.CommitObject,
+ plumbing.TagObject:
+ entries, err := p.EntriesByOffset()
+ if err != nil {
+ return nil, err
+ }
+
+ return &objectIter{
+ // Easiest way to provide an object decoder is just to pass a Packfile
+ // instance. To not mess with the seeks, it's a new instance with a
+ // different scanner but the same cache and offset to hash map for
+ // reusing as much cache as possible.
+ p: p,
+ iter: entries,
+ typ: typ,
+ }, nil
+ default:
+ return nil, plumbing.ErrInvalidType
+ }
+}
+
+// ID returns the ID of the packfile, which is the checksum at the end of it.
+func (p *Packfile) ID() (plumbing.Hash, error) {
+ prev, err := p.file.Seek(-20, io.SeekEnd)
+ if err != nil {
+ return plumbing.ZeroHash, err
+ }
+
+ var hash plumbing.Hash
+ if _, err := io.ReadFull(p.file, hash[:]); err != nil {
+ return plumbing.ZeroHash, err
+ }
+
+ if _, err := p.file.Seek(prev, io.SeekStart); err != nil {
+ return plumbing.ZeroHash, err
+ }
+
+ return hash, nil
+}
+
+// Close the packfile and its resources.
+func (p *Packfile) Close() error {
+ closer, ok := p.file.(io.Closer)
+ if !ok {
+ return nil
+ }
+
+ return closer.Close()
+}
+
+type objectIter struct {
+ p *Packfile
+ typ plumbing.ObjectType
+ iter idxfile.EntryIter
+}
+
+func (i *objectIter) Next() (plumbing.EncodedObject, error) {
+ for {
+ e, err := i.iter.Next()
+ if err != nil {
+ return nil, err
+ }
+
+ obj, err := i.p.GetByOffset(int64(e.Offset))
+ if err != nil {
+ return nil, err
+ }
+
+ if i.typ == plumbing.AnyObject || obj.Type() == i.typ {
+ return obj, nil
+ }
+ }
+}
+
+func (i *objectIter) ForEach(f func(plumbing.EncodedObject) error) error {
+ for {
+ o, err := i.Next()
+ if err != nil {
+ if err == io.EOF {
+ return nil
+ }
+ return err
+ }
+
+ if err := f(o); err != nil {
+ return err
+ }
+ }
+}
+
+func (i *objectIter) Close() {
+ i.iter.Close()
+}
+
+// isInvalid checks whether an error is an os.PathError with an os.ErrInvalid
+// error inside. It also checks for the windows error, which is different from
+// os.ErrInvalid.
+func isInvalid(err error) bool {
+ pe, ok := err.(*os.PathError)
+ if !ok {
+ return false
+ }
+
+ errstr := pe.Err.Error()
+ return errstr == errInvalidUnix || errstr == errInvalidWindows
+}
+
+// errInvalidWindows is the Windows equivalent to os.ErrInvalid
+const errInvalidWindows = "The parameter is incorrect."
+
+var errInvalidUnix = os.ErrInvalid.Error()
diff --git a/plumbing/format/packfile/packfile_test.go b/plumbing/format/packfile/packfile_test.go
new file mode 100644
index 0000000..05dc8a7
--- /dev/null
+++ b/plumbing/format/packfile/packfile_test.go
@@ -0,0 +1,279 @@
+package packfile_test
+
+import (
+ "io"
+ "math"
+
+ . "gopkg.in/check.v1"
+ "gopkg.in/src-d/go-billy.v4/osfs"
+ fixtures "gopkg.in/src-d/go-git-fixtures.v3"
+ "gopkg.in/src-d/go-git.v4/plumbing"
+ "gopkg.in/src-d/go-git.v4/plumbing/format/idxfile"
+ "gopkg.in/src-d/go-git.v4/plumbing/format/packfile"
+ "gopkg.in/src-d/go-git.v4/plumbing/storer"
+)
+
+type PackfileSuite struct {
+ fixtures.Suite
+ p *packfile.Packfile
+ idx *idxfile.MemoryIndex
+ f *fixtures.Fixture
+}
+
+var _ = Suite(&PackfileSuite{})
+
+func (s *PackfileSuite) TestGet(c *C) {
+ for h := range expectedEntries {
+ obj, err := s.p.Get(h)
+ c.Assert(err, IsNil)
+ c.Assert(obj, Not(IsNil))
+ c.Assert(obj.Hash(), Equals, h)
+ }
+
+ _, err := s.p.Get(plumbing.ZeroHash)
+ c.Assert(err, Equals, plumbing.ErrObjectNotFound)
+}
+
+func (s *PackfileSuite) TestGetByOffset(c *C) {
+ for h, o := range expectedEntries {
+ obj, err := s.p.GetByOffset(o)
+ c.Assert(err, IsNil)
+ c.Assert(obj, Not(IsNil))
+ c.Assert(obj.Hash(), Equals, h)
+ }
+
+ _, err := s.p.GetByOffset(math.MaxInt64)
+ c.Assert(err, Equals, plumbing.ErrObjectNotFound)
+}
+
+func (s *PackfileSuite) TestID(c *C) {
+ id, err := s.p.ID()
+ c.Assert(err, IsNil)
+ c.Assert(id, Equals, s.f.PackfileHash)
+}
+
+func (s *PackfileSuite) TestGetAll(c *C) {
+ iter, err := s.p.GetAll()
+ c.Assert(err, IsNil)
+
+ var objects int
+ for {
+ o, err := iter.Next()
+ if err == io.EOF {
+ break
+ }
+ c.Assert(err, IsNil)
+
+ objects++
+ _, ok := expectedEntries[o.Hash()]
+ c.Assert(ok, Equals, true)
+ }
+
+ c.Assert(objects, Equals, len(expectedEntries))
+}
+
+var expectedEntries = map[plumbing.Hash]int64{
+ plumbing.NewHash("1669dce138d9b841a518c64b10914d88f5e488ea"): 615,
+ plumbing.NewHash("32858aad3c383ed1ff0a0f9bdf231d54a00c9e88"): 1524,
+ plumbing.NewHash("35e85108805c84807bc66a02d91535e1e24b38b9"): 1063,
+ plumbing.NewHash("49c6bb89b17060d7b4deacb7b338fcc6ea2352a9"): 78882,
+ plumbing.NewHash("4d081c50e250fa32ea8b1313cf8bb7c2ad7627fd"): 84688,
+ plumbing.NewHash("586af567d0bb5e771e49bdd9434f5e0fb76d25fa"): 84559,
+ plumbing.NewHash("5a877e6a906a2743ad6e45d99c1793642aaf8eda"): 84479,
+ plumbing.NewHash("6ecf0ef2c2dffb796033e5a02219af86ec6584e5"): 186,
+ plumbing.NewHash("7e59600739c96546163833214c36459e324bad0a"): 84653,
+ plumbing.NewHash("880cd14280f4b9b6ed3986d6671f907d7cc2a198"): 78050,
+ plumbing.NewHash("8dcef98b1d52143e1e2dbc458ffe38f925786bf2"): 84741,
+ plumbing.NewHash("918c48b83bd081e863dbe1b80f8998f058cd8294"): 286,
+ plumbing.NewHash("9a48f23120e880dfbe41f7c9b7b708e9ee62a492"): 80998,
+ plumbing.NewHash("9dea2395f5403188298c1dabe8bdafe562c491e3"): 84032,
+ plumbing.NewHash("a39771a7651f97faf5c72e08224d857fc35133db"): 84430,
+ plumbing.NewHash("a5b8b09e2f8fcb0bb99d3ccb0958157b40890d69"): 838,
+ plumbing.NewHash("a8d315b2b1c615d43042c3a62402b8a54288cf5c"): 84375,
+ plumbing.NewHash("aa9b383c260e1d05fbbf6b30a02914555e20c725"): 84760,
+ plumbing.NewHash("af2d6a6954d532f8ffb47615169c8fdf9d383a1a"): 449,
+ plumbing.NewHash("b029517f6300c2da0f4b651b8642506cd6aaf45d"): 1392,
+ plumbing.NewHash("b8e471f58bcbca63b07bda20e428190409c2db47"): 1230,
+ plumbing.NewHash("c192bd6a24ea1ab01d78686e417c8bdc7c3d197f"): 1713,
+ plumbing.NewHash("c2d30fa8ef288618f65f6eed6e168e0d514886f4"): 84725,
+ plumbing.NewHash("c8f1d8c61f9da76f4cb49fd86322b6e685dba956"): 80725,
+ plumbing.NewHash("cf4aa3b38974fb7d81f367c0830f7d78d65ab86b"): 84608,
+ plumbing.NewHash("d3ff53e0564a9f87d8e84b6e28e5060e517008aa"): 1685,
+ plumbing.NewHash("d5c0f4ab811897cadf03aec358ae60d21f91c50d"): 2351,
+ plumbing.NewHash("dbd3641b371024f44d0e469a9c8f5457b0660de1"): 84115,
+ plumbing.NewHash("e8d3ffab552895c19b9fcf7aa264d277cde33881"): 12,
+ plumbing.NewHash("eba74343e2f15d62adedfd8c883ee0262b5c8021"): 84708,
+ plumbing.NewHash("fb72698cab7617ac416264415f13224dfd7a165e"): 84671,
+}
+
+func (s *PackfileSuite) SetUpTest(c *C) {
+ s.f = fixtures.Basic().One()
+
+ fs := osfs.New("")
+ f, err := fs.Open(s.f.Packfile().Name())
+ c.Assert(err, IsNil)
+
+ s.idx = idxfile.NewMemoryIndex()
+ c.Assert(idxfile.NewDecoder(s.f.Idx()).Decode(s.idx), IsNil)
+
+ s.p = packfile.NewPackfile(s.idx, fs, f)
+}
+
+func (s *PackfileSuite) TearDownTest(c *C) {
+ c.Assert(s.p.Close(), IsNil)
+}
+
+func (s *PackfileSuite) TestDecode(c *C) {
+ fixtures.Basic().ByTag("packfile").Test(c, func(f *fixtures.Fixture) {
+ index := getIndexFromIdxFile(f.Idx())
+ fs := osfs.New("")
+ pf, err := fs.Open(f.Packfile().Name())
+ c.Assert(err, IsNil)
+
+ p := packfile.NewPackfile(index, fs, pf)
+ defer p.Close()
+
+ for _, h := range expectedHashes {
+ obj, err := p.Get(plumbing.NewHash(h))
+ c.Assert(err, IsNil)
+ c.Assert(obj.Hash().String(), Equals, h)
+ }
+ })
+}
+
+func (s *PackfileSuite) TestDecodeByTypeRefDelta(c *C) {
+ f := fixtures.Basic().ByTag("ref-delta").One()
+
+ index := getIndexFromIdxFile(f.Idx())
+ fs := osfs.New("")
+ pf, err := fs.Open(f.Packfile().Name())
+ c.Assert(err, IsNil)
+
+ packfile := packfile.NewPackfile(index, fs, pf)
+ defer packfile.Close()
+
+ iter, err := packfile.GetByType(plumbing.CommitObject)
+ c.Assert(err, IsNil)
+
+ var count int
+ for {
+ obj, err := iter.Next()
+ if err == io.EOF {
+ break
+ }
+ count++
+ c.Assert(err, IsNil)
+ c.Assert(obj.Type(), Equals, plumbing.CommitObject)
+ }
+
+ c.Assert(count > 0, Equals, true)
+}
+
+func (s *PackfileSuite) TestDecodeByType(c *C) {
+ ts := []plumbing.ObjectType{
+ plumbing.CommitObject,
+ plumbing.TagObject,
+ plumbing.TreeObject,
+ plumbing.BlobObject,
+ }
+
+ fixtures.Basic().ByTag("packfile").Test(c, func(f *fixtures.Fixture) {
+ for _, t := range ts {
+ index := getIndexFromIdxFile(f.Idx())
+ fs := osfs.New("")
+ pf, err := fs.Open(f.Packfile().Name())
+ c.Assert(err, IsNil)
+
+ packfile := packfile.NewPackfile(index, fs, pf)
+ defer packfile.Close()
+
+ iter, err := packfile.GetByType(t)
+ c.Assert(err, IsNil)
+
+ c.Assert(iter.ForEach(func(obj plumbing.EncodedObject) error {
+ c.Assert(obj.Type(), Equals, t)
+ return nil
+ }), IsNil)
+ }
+ })
+}
+
+func (s *PackfileSuite) TestDecodeByTypeConstructor(c *C) {
+ f := fixtures.Basic().ByTag("packfile").One()
+ index := getIndexFromIdxFile(f.Idx())
+ fs := osfs.New("")
+ pf, err := fs.Open(f.Packfile().Name())
+ c.Assert(err, IsNil)
+
+ packfile := packfile.NewPackfile(index, fs, pf)
+ defer packfile.Close()
+
+ _, err = packfile.GetByType(plumbing.OFSDeltaObject)
+ c.Assert(err, Equals, plumbing.ErrInvalidType)
+
+ _, err = packfile.GetByType(plumbing.REFDeltaObject)
+ c.Assert(err, Equals, plumbing.ErrInvalidType)
+
+ _, err = packfile.GetByType(plumbing.InvalidObject)
+ c.Assert(err, Equals, plumbing.ErrInvalidType)
+}
+
+var expectedHashes = []string{
+ "918c48b83bd081e863dbe1b80f8998f058cd8294",
+ "af2d6a6954d532f8ffb47615169c8fdf9d383a1a",
+ "1669dce138d9b841a518c64b10914d88f5e488ea",
+ "a5b8b09e2f8fcb0bb99d3ccb0958157b40890d69",
+ "b8e471f58bcbca63b07bda20e428190409c2db47",
+ "35e85108805c84807bc66a02d91535e1e24b38b9",
+ "b029517f6300c2da0f4b651b8642506cd6aaf45d",
+ "32858aad3c383ed1ff0a0f9bdf231d54a00c9e88",
+ "d3ff53e0564a9f87d8e84b6e28e5060e517008aa",
+ "c192bd6a24ea1ab01d78686e417c8bdc7c3d197f",
+ "d5c0f4ab811897cadf03aec358ae60d21f91c50d",
+ "49c6bb89b17060d7b4deacb7b338fcc6ea2352a9",
+ "cf4aa3b38974fb7d81f367c0830f7d78d65ab86b",
+ "9dea2395f5403188298c1dabe8bdafe562c491e3",
+ "586af567d0bb5e771e49bdd9434f5e0fb76d25fa",
+ "9a48f23120e880dfbe41f7c9b7b708e9ee62a492",
+ "5a877e6a906a2743ad6e45d99c1793642aaf8eda",
+ "c8f1d8c61f9da76f4cb49fd86322b6e685dba956",
+ "a8d315b2b1c615d43042c3a62402b8a54288cf5c",
+ "a39771a7651f97faf5c72e08224d857fc35133db",
+ "880cd14280f4b9b6ed3986d6671f907d7cc2a198",
+ "fb72698cab7617ac416264415f13224dfd7a165e",
+ "4d081c50e250fa32ea8b1313cf8bb7c2ad7627fd",
+ "eba74343e2f15d62adedfd8c883ee0262b5c8021",
+ "c2d30fa8ef288618f65f6eed6e168e0d514886f4",
+ "8dcef98b1d52143e1e2dbc458ffe38f925786bf2",
+ "aa9b383c260e1d05fbbf6b30a02914555e20c725",
+ "6ecf0ef2c2dffb796033e5a02219af86ec6584e5",
+ "dbd3641b371024f44d0e469a9c8f5457b0660de1",
+ "e8d3ffab552895c19b9fcf7aa264d277cde33881",
+ "7e59600739c96546163833214c36459e324bad0a",
+}
+
+func assertObjects(c *C, s storer.EncodedObjectStorer, expects []string) {
+ i, err := s.IterEncodedObjects(plumbing.AnyObject)
+ c.Assert(err, IsNil)
+
+ var count int
+ err = i.ForEach(func(plumbing.EncodedObject) error { count++; return nil })
+ c.Assert(err, IsNil)
+ c.Assert(count, Equals, len(expects))
+
+ for _, exp := range expects {
+ obt, err := s.EncodedObject(plumbing.AnyObject, plumbing.NewHash(exp))
+ c.Assert(err, IsNil)
+ c.Assert(obt.Hash().String(), Equals, exp)
+ }
+}
+
+func getIndexFromIdxFile(r io.Reader) idxfile.Index {
+ idxf := idxfile.NewMemoryIndex()
+ d := idxfile.NewDecoder(r)
+ if err := d.Decode(idxf); err != nil {
+ panic(err)
+ }
+
+ return idxf
+}
diff --git a/plumbing/format/packfile/parser.go b/plumbing/format/packfile/parser.go
new file mode 100644
index 0000000..28582b5
--- /dev/null
+++ b/plumbing/format/packfile/parser.go
@@ -0,0 +1,489 @@
+package packfile
+
+import (
+ "bytes"
+ "errors"
+ "io"
+
+ "gopkg.in/src-d/go-git.v4/plumbing"
+ "gopkg.in/src-d/go-git.v4/plumbing/cache"
+ "gopkg.in/src-d/go-git.v4/plumbing/storer"
+)
+
+var (
+ // ErrReferenceDeltaNotFound is returned when the reference delta is not
+ // found.
+ ErrReferenceDeltaNotFound = errors.New("reference delta not found")
+
+ // ErrNotSeekableSource is returned when the source for the parser is not
+ // seekable and a storage was not provided, so it can't be parsed.
+ ErrNotSeekableSource = errors.New("parser source is not seekable and storage was not provided")
+
+ // ErrDeltaNotCached is returned when the delta could not be found in cache.
+ ErrDeltaNotCached = errors.New("delta could not be found in cache")
+)
+
+// Observer interface is implemented by index encoders.
+type Observer interface {
+ // OnHeader is called when a new packfile is opened.
+ OnHeader(count uint32) error
+ // OnInflatedObjectHeader is called for each object header read.
+ OnInflatedObjectHeader(t plumbing.ObjectType, objSize int64, pos int64) error
+ // OnInflatedObjectContent is called for each decoded object.
+ OnInflatedObjectContent(h plumbing.Hash, pos int64, crc uint32, content []byte) error
+ // OnFooter is called when decoding is done.
+ OnFooter(h plumbing.Hash) error
+}
+
+// Parser decodes a packfile and calls any observer associated to it. Is used
+// to generate indexes.
+type Parser struct {
+ storage storer.EncodedObjectStorer
+ scanner *Scanner
+ count uint32
+ oi []*objectInfo
+ oiByHash map[plumbing.Hash]*objectInfo
+ oiByOffset map[int64]*objectInfo
+ hashOffset map[plumbing.Hash]int64
+ pendingRefDeltas map[plumbing.Hash][]*objectInfo
+ checksum plumbing.Hash
+
+ cache *cache.BufferLRU
+ // delta content by offset, only used if source is not seekable
+ deltas map[int64][]byte
+
+ ob []Observer
+}
+
+// NewParser creates a new Parser. The Scanner source must be seekable.
+// If it's not, NewParserWithStorage should be used instead.
+func NewParser(scanner *Scanner, ob ...Observer) (*Parser, error) {
+ return NewParserWithStorage(scanner, nil, ob...)
+}
+
+// NewParserWithStorage creates a new Parser. The scanner source must either
+// be seekable or a storage must be provided.
+func NewParserWithStorage(
+ scanner *Scanner,
+ storage storer.EncodedObjectStorer,
+ ob ...Observer,
+) (*Parser, error) {
+ if !scanner.IsSeekable && storage == nil {
+ return nil, ErrNotSeekableSource
+ }
+
+ var deltas map[int64][]byte
+ if !scanner.IsSeekable {
+ deltas = make(map[int64][]byte)
+ }
+
+ return &Parser{
+ storage: storage,
+ scanner: scanner,
+ ob: ob,
+ count: 0,
+ cache: cache.NewBufferLRUDefault(),
+ pendingRefDeltas: make(map[plumbing.Hash][]*objectInfo),
+ deltas: deltas,
+ }, nil
+}
+
+func (p *Parser) forEachObserver(f func(o Observer) error) error {
+ for _, o := range p.ob {
+ if err := f(o); err != nil {
+ return err
+ }
+ }
+ return nil
+}
+
+func (p *Parser) onHeader(count uint32) error {
+ return p.forEachObserver(func(o Observer) error {
+ return o.OnHeader(count)
+ })
+}
+
+func (p *Parser) onInflatedObjectHeader(
+ t plumbing.ObjectType,
+ objSize int64,
+ pos int64,
+) error {
+ return p.forEachObserver(func(o Observer) error {
+ return o.OnInflatedObjectHeader(t, objSize, pos)
+ })
+}
+
+func (p *Parser) onInflatedObjectContent(
+ h plumbing.Hash,
+ pos int64,
+ crc uint32,
+ content []byte,
+) error {
+ return p.forEachObserver(func(o Observer) error {
+ return o.OnInflatedObjectContent(h, pos, crc, content)
+ })
+}
+
+func (p *Parser) onFooter(h plumbing.Hash) error {
+ return p.forEachObserver(func(o Observer) error {
+ return o.OnFooter(h)
+ })
+}
+
+// Parse start decoding phase of the packfile.
+func (p *Parser) Parse() (plumbing.Hash, error) {
+ if err := p.init(); err != nil {
+ return plumbing.ZeroHash, err
+ }
+
+ if err := p.indexObjects(); err != nil {
+ return plumbing.ZeroHash, err
+ }
+
+ var err error
+ p.checksum, err = p.scanner.Checksum()
+ if err != nil && err != io.EOF {
+ return plumbing.ZeroHash, err
+ }
+
+ if err := p.resolveDeltas(); err != nil {
+ return plumbing.ZeroHash, err
+ }
+
+ if len(p.pendingRefDeltas) > 0 {
+ return plumbing.ZeroHash, ErrReferenceDeltaNotFound
+ }
+
+ if err := p.onFooter(p.checksum); err != nil {
+ return plumbing.ZeroHash, err
+ }
+
+ return p.checksum, nil
+}
+
+func (p *Parser) init() error {
+ _, c, err := p.scanner.Header()
+ if err != nil {
+ return err
+ }
+
+ if err := p.onHeader(c); err != nil {
+ return err
+ }
+
+ p.count = c
+ p.oiByHash = make(map[plumbing.Hash]*objectInfo, p.count)
+ p.oiByOffset = make(map[int64]*objectInfo, p.count)
+ p.oi = make([]*objectInfo, p.count)
+
+ return nil
+}
+
+func (p *Parser) indexObjects() error {
+ buf := new(bytes.Buffer)
+
+ for i := uint32(0); i < p.count; i++ {
+ buf.Reset()
+
+ oh, err := p.scanner.NextObjectHeader()
+ if err != nil {
+ return err
+ }
+
+ delta := false
+ var ota *objectInfo
+ switch t := oh.Type; t {
+ case plumbing.OFSDeltaObject:
+ delta = true
+
+ parent, ok := p.oiByOffset[oh.OffsetReference]
+ if !ok {
+ return plumbing.ErrObjectNotFound
+ }
+
+ ota = newDeltaObject(oh.Offset, oh.Length, t, parent)
+ parent.Children = append(parent.Children, ota)
+ case plumbing.REFDeltaObject:
+ delta = true
+
+ parent, ok := p.oiByHash[oh.Reference]
+ if ok {
+ ota = newDeltaObject(oh.Offset, oh.Length, t, parent)
+ parent.Children = append(parent.Children, ota)
+ } else {
+ ota = newBaseObject(oh.Offset, oh.Length, t)
+ p.pendingRefDeltas[oh.Reference] = append(
+ p.pendingRefDeltas[oh.Reference],
+ ota,
+ )
+ }
+ default:
+ ota = newBaseObject(oh.Offset, oh.Length, t)
+ }
+
+ _, crc, err := p.scanner.NextObject(buf)
+ if err != nil {
+ return err
+ }
+
+ ota.Crc32 = crc
+ ota.Length = oh.Length
+
+ data := buf.Bytes()
+ if !delta {
+ sha1, err := getSHA1(ota.Type, data)
+ if err != nil {
+ return err
+ }
+
+ ota.SHA1 = sha1
+ p.oiByHash[ota.SHA1] = ota
+ }
+
+ if p.storage != nil && !delta {
+ obj := new(plumbing.MemoryObject)
+ obj.SetSize(oh.Length)
+ obj.SetType(oh.Type)
+ if _, err := obj.Write(data); err != nil {
+ return err
+ }
+
+ if _, err := p.storage.SetEncodedObject(obj); err != nil {
+ return err
+ }
+ }
+
+ if delta && !p.scanner.IsSeekable {
+ p.deltas[oh.Offset] = make([]byte, len(data))
+ copy(p.deltas[oh.Offset], data)
+ }
+
+ p.oiByOffset[oh.Offset] = ota
+ p.oi[i] = ota
+ }
+
+ return nil
+}
+
+func (p *Parser) resolveDeltas() error {
+ for _, obj := range p.oi {
+ content, err := p.get(obj)
+ if err != nil {
+ return err
+ }
+
+ if err := p.onInflatedObjectHeader(obj.Type, obj.Length, obj.Offset); err != nil {
+ return err
+ }
+
+ if err := p.onInflatedObjectContent(obj.SHA1, obj.Offset, obj.Crc32, content); err != nil {
+ return err
+ }
+
+ if !obj.IsDelta() && len(obj.Children) > 0 {
+ for _, child := range obj.Children {
+ if _, err := p.resolveObject(child, content); err != nil {
+ return err
+ }
+ }
+
+ // Remove the delta from the cache.
+ if obj.DiskType.IsDelta() && !p.scanner.IsSeekable {
+ delete(p.deltas, obj.Offset)
+ }
+ }
+ }
+
+ return nil
+}
+
+func (p *Parser) get(o *objectInfo) ([]byte, error) {
+ b, ok := p.cache.Get(o.Offset)
+ // If it's not on the cache and is not a delta we can try to find it in the
+ // storage, if there's one.
+ if !ok && p.storage != nil && !o.Type.IsDelta() {
+ var err error
+ e, err := p.storage.EncodedObject(plumbing.AnyObject, o.SHA1)
+ if err != nil {
+ return nil, err
+ }
+
+ r, err := e.Reader()
+ if err != nil {
+ return nil, err
+ }
+
+ b = make([]byte, e.Size())
+ if _, err = r.Read(b); err != nil {
+ return nil, err
+ }
+ }
+
+ if b != nil {
+ return b, nil
+ }
+
+ var data []byte
+ if o.DiskType.IsDelta() {
+ base, err := p.get(o.Parent)
+ if err != nil {
+ return nil, err
+ }
+
+ data, err = p.resolveObject(o, base)
+ if err != nil {
+ return nil, err
+ }
+ } else {
+ var err error
+ data, err = p.readData(o)
+ if err != nil {
+ return nil, err
+ }
+ }
+
+ if len(o.Children) > 0 {
+ p.cache.Put(o.Offset, data)
+ }
+
+ return data, nil
+}
+
+func (p *Parser) resolveObject(
+ o *objectInfo,
+ base []byte,
+) ([]byte, error) {
+ if !o.DiskType.IsDelta() {
+ return nil, nil
+ }
+
+ data, err := p.readData(o)
+ if err != nil {
+ return nil, err
+ }
+
+ data, err = applyPatchBase(o, data, base)
+ if err != nil {
+ return nil, err
+ }
+
+ if pending, ok := p.pendingRefDeltas[o.SHA1]; ok {
+ for _, po := range pending {
+ po.Parent = o
+ o.Children = append(o.Children, po)
+ }
+ delete(p.pendingRefDeltas, o.SHA1)
+ }
+
+ if p.storage != nil {
+ obj := new(plumbing.MemoryObject)
+ obj.SetSize(o.Size())
+ obj.SetType(o.Type)
+ if _, err := obj.Write(data); err != nil {
+ return nil, err
+ }
+
+ if _, err := p.storage.SetEncodedObject(obj); err != nil {
+ return nil, err
+ }
+ }
+
+ return data, nil
+}
+
+func (p *Parser) readData(o *objectInfo) ([]byte, error) {
+ if !p.scanner.IsSeekable && o.DiskType.IsDelta() {
+ data, ok := p.deltas[o.Offset]
+ if !ok {
+ return nil, ErrDeltaNotCached
+ }
+
+ return data, nil
+ }
+
+ if _, err := p.scanner.SeekFromStart(o.Offset); err != nil {
+ return nil, err
+ }
+
+ if _, err := p.scanner.NextObjectHeader(); err != nil {
+ return nil, err
+ }
+
+ buf := new(bytes.Buffer)
+ if _, _, err := p.scanner.NextObject(buf); err != nil {
+ return nil, err
+ }
+
+ return buf.Bytes(), nil
+}
+
+func applyPatchBase(ota *objectInfo, data, base []byte) ([]byte, error) {
+ patched, err := PatchDelta(base, data)
+ if err != nil {
+ return nil, err
+ }
+
+ if ota.SHA1 == plumbing.ZeroHash {
+ ota.Type = ota.Parent.Type
+ sha1, err := getSHA1(ota.Type, patched)
+ if err != nil {
+ return nil, err
+ }
+
+ ota.SHA1 = sha1
+ ota.Length = int64(len(patched))
+ }
+
+ return patched, nil
+}
+
+func getSHA1(t plumbing.ObjectType, data []byte) (plumbing.Hash, error) {
+ hasher := plumbing.NewHasher(t, int64(len(data)))
+ if _, err := hasher.Write(data); err != nil {
+ return plumbing.ZeroHash, err
+ }
+
+ return hasher.Sum(), nil
+}
+
+type objectInfo struct {
+ Offset int64
+ Length int64
+ Type plumbing.ObjectType
+ DiskType plumbing.ObjectType
+
+ Crc32 uint32
+
+ Parent *objectInfo
+ Children []*objectInfo
+ SHA1 plumbing.Hash
+}
+
+func newBaseObject(offset, length int64, t plumbing.ObjectType) *objectInfo {
+ return newDeltaObject(offset, length, t, nil)
+}
+
+func newDeltaObject(
+ offset, length int64,
+ t plumbing.ObjectType,
+ parent *objectInfo,
+) *objectInfo {
+ obj := &objectInfo{
+ Offset: offset,
+ Length: length,
+ Type: t,
+ DiskType: t,
+ Crc32: 0,
+ Parent: parent,
+ }
+
+ return obj
+}
+
+func (o *objectInfo) IsDelta() bool {
+ return o.Type.IsDelta()
+}
+
+func (o *objectInfo) Size() int64 {
+ return o.Length
+}
diff --git a/plumbing/format/packfile/parser_test.go b/plumbing/format/packfile/parser_test.go
new file mode 100644
index 0000000..012a140
--- /dev/null
+++ b/plumbing/format/packfile/parser_test.go
@@ -0,0 +1,195 @@
+package packfile_test
+
+import (
+ "testing"
+
+ "gopkg.in/src-d/go-git.v4/plumbing"
+ "gopkg.in/src-d/go-git.v4/plumbing/format/packfile"
+
+ . "gopkg.in/check.v1"
+ "gopkg.in/src-d/go-git-fixtures.v3"
+)
+
+type ParserSuite struct {
+ fixtures.Suite
+}
+
+var _ = Suite(&ParserSuite{})
+
+func (s *ParserSuite) TestParserHashes(c *C) {
+ f := fixtures.Basic().One()
+ scanner := packfile.NewScanner(f.Packfile())
+
+ obs := new(testObserver)
+ parser, err := packfile.NewParser(scanner, obs)
+ c.Assert(err, IsNil)
+
+ ch, err := parser.Parse()
+ c.Assert(err, IsNil)
+
+ checksum := "a3fed42da1e8189a077c0e6846c040dcf73fc9dd"
+ c.Assert(ch.String(), Equals, checksum)
+
+ c.Assert(obs.checksum, Equals, checksum)
+ c.Assert(int(obs.count), Equals, int(31))
+
+ commit := plumbing.CommitObject
+ blob := plumbing.BlobObject
+ tree := plumbing.TreeObject
+
+ objs := []observerObject{
+ {"e8d3ffab552895c19b9fcf7aa264d277cde33881", commit, 254, 12, 0xaa07ba4b},
+ {"6ecf0ef2c2dffb796033e5a02219af86ec6584e5", commit, 245, 186, 0xf706df58},
+ {"918c48b83bd081e863dbe1b80f8998f058cd8294", commit, 242, 286, 0x12438846},
+ {"af2d6a6954d532f8ffb47615169c8fdf9d383a1a", commit, 242, 449, 0x2905a38c},
+ {"1669dce138d9b841a518c64b10914d88f5e488ea", commit, 333, 615, 0xd9429436},
+ {"a5b8b09e2f8fcb0bb99d3ccb0958157b40890d69", commit, 332, 838, 0xbecfde4e},
+ {"35e85108805c84807bc66a02d91535e1e24b38b9", commit, 244, 1063, 0x780e4b3e},
+ {"b8e471f58bcbca63b07bda20e428190409c2db47", commit, 243, 1230, 0xdc18344f},
+ {"b029517f6300c2da0f4b651b8642506cd6aaf45d", commit, 187, 1392, 0xcf4e4280},
+ {"32858aad3c383ed1ff0a0f9bdf231d54a00c9e88", blob, 189, 1524, 0x1f08118a},
+ {"d3ff53e0564a9f87d8e84b6e28e5060e517008aa", blob, 18, 1685, 0xafded7b8},
+ {"c192bd6a24ea1ab01d78686e417c8bdc7c3d197f", blob, 1072, 1713, 0xcc1428ed},
+ {"d5c0f4ab811897cadf03aec358ae60d21f91c50d", blob, 76110, 2351, 0x1631d22f},
+ {"880cd14280f4b9b6ed3986d6671f907d7cc2a198", blob, 2780, 78050, 0xbfff5850},
+ {"49c6bb89b17060d7b4deacb7b338fcc6ea2352a9", blob, 217848, 78882, 0xd108e1d8},
+ {"c8f1d8c61f9da76f4cb49fd86322b6e685dba956", blob, 706, 80725, 0x8e97ba25},
+ {"9a48f23120e880dfbe41f7c9b7b708e9ee62a492", blob, 11488, 80998, 0x7316ff70},
+ {"9dea2395f5403188298c1dabe8bdafe562c491e3", blob, 78, 84032, 0xdb4fce56},
+ {"dbd3641b371024f44d0e469a9c8f5457b0660de1", tree, 272, 84115, 0x901cce2c},
+ {"a8d315b2b1c615d43042c3a62402b8a54288cf5c", tree, 271, 84375, 0xec4552b0},
+ {"a39771a7651f97faf5c72e08224d857fc35133db", tree, 38, 84430, 0x847905bf},
+ {"5a877e6a906a2743ad6e45d99c1793642aaf8eda", tree, 75, 84479, 0x3689459a},
+ {"586af567d0bb5e771e49bdd9434f5e0fb76d25fa", tree, 38, 84559, 0xe67af94a},
+ {"cf4aa3b38974fb7d81f367c0830f7d78d65ab86b", tree, 34, 84608, 0xc2314a2e},
+ {"7e59600739c96546163833214c36459e324bad0a", blob, 9, 84653, 0xcd987848},
+ {"fb72698cab7617ac416264415f13224dfd7a165e", tree, 238, 84671, 0x8a853a6d},
+ {"4d081c50e250fa32ea8b1313cf8bb7c2ad7627fd", tree, 179, 84688, 0x70c6518},
+ {"eba74343e2f15d62adedfd8c883ee0262b5c8021", tree, 148, 84708, 0x4f4108e2},
+ {"c2d30fa8ef288618f65f6eed6e168e0d514886f4", tree, 110, 84725, 0xd6fe09e9},
+ {"8dcef98b1d52143e1e2dbc458ffe38f925786bf2", tree, 111, 84741, 0xf07a2804},
+ {"aa9b383c260e1d05fbbf6b30a02914555e20c725", tree, 73, 84760, 0x1d75d6be},
+ }
+
+ c.Assert(obs.objects, DeepEquals, objs)
+}
+
+type observerObject struct {
+ hash string
+ otype plumbing.ObjectType
+ size int64
+ offset int64
+ crc uint32
+}
+
+type testObserver struct {
+ count uint32
+ checksum string
+ objects []observerObject
+ pos map[int64]int
+}
+
+func (t *testObserver) OnHeader(count uint32) error {
+ t.count = count
+ t.pos = make(map[int64]int, count)
+ return nil
+}
+
+func (t *testObserver) OnInflatedObjectHeader(otype plumbing.ObjectType, objSize int64, pos int64) error {
+ o := t.get(pos)
+ o.otype = otype
+ o.size = objSize
+ o.offset = pos
+
+ t.put(pos, o)
+
+ return nil
+}
+
+func (t *testObserver) OnInflatedObjectContent(h plumbing.Hash, pos int64, crc uint32, _ []byte) error {
+ o := t.get(pos)
+ o.hash = h.String()
+ o.crc = crc
+
+ t.put(pos, o)
+
+ return nil
+}
+
+func (t *testObserver) OnFooter(h plumbing.Hash) error {
+ t.checksum = h.String()
+ return nil
+}
+
+func (t *testObserver) get(pos int64) observerObject {
+ i, ok := t.pos[pos]
+ if ok {
+ return t.objects[i]
+ }
+
+ return observerObject{}
+}
+
+func (t *testObserver) put(pos int64, o observerObject) {
+ i, ok := t.pos[pos]
+ if ok {
+ t.objects[i] = o
+ return
+ }
+
+ t.pos[pos] = len(t.objects)
+ t.objects = append(t.objects, o)
+}
+
+func BenchmarkParse(b *testing.B) {
+ if err := fixtures.Init(); err != nil {
+ b.Fatal(err)
+ }
+
+ defer func() {
+ if err := fixtures.Clean(); err != nil {
+ b.Fatal(err)
+ }
+ }()
+
+ for _, f := range fixtures.ByTag("packfile") {
+ b.Run(f.URL, func(b *testing.B) {
+ for i := 0; i < b.N; i++ {
+ parser, err := packfile.NewParser(packfile.NewScanner(f.Packfile()))
+ if err != nil {
+ b.Fatal(err)
+ }
+
+ _, err = parser.Parse()
+ if err != nil {
+ b.Fatal(err)
+ }
+ }
+ })
+ }
+}
+
+func BenchmarkParseBasic(b *testing.B) {
+ if err := fixtures.Init(); err != nil {
+ b.Fatal(err)
+ }
+
+ defer func() {
+ if err := fixtures.Clean(); err != nil {
+ b.Fatal(err)
+ }
+ }()
+
+ f := fixtures.Basic().One()
+ for i := 0; i < b.N; i++ {
+ parser, err := packfile.NewParser(packfile.NewScanner(f.Packfile()))
+ if err != nil {
+ b.Fatal(err)
+ }
+
+ _, err = parser.Parse()
+ if err != nil {
+ b.Fatal(err)
+ }
+ }
+}
diff --git a/plumbing/format/packfile/patch_delta.go b/plumbing/format/packfile/patch_delta.go
index c604851..a972f1c 100644
--- a/plumbing/format/packfile/patch_delta.go
+++ b/plumbing/format/packfile/patch_delta.go
@@ -63,8 +63,8 @@
targetSz, delta := decodeLEB128(delta)
remainingTargetSz := targetSz
- var dest []byte
var cmd byte
+ dest := make([]byte, 0, targetSz)
for {
if len(delta) == 0 {
return nil, ErrInvalidDelta
diff --git a/plumbing/memory.go b/plumbing/memory.go
index 51cbb54..b8e1e1b 100644
--- a/plumbing/memory.go
+++ b/plumbing/memory.go
@@ -14,10 +14,10 @@
sz int64
}
-// Hash return the object Hash, the hash is calculated on-the-fly the first
-// time is called, the subsequent calls the same Hash is returned even if the
-// type or the content has changed. The Hash is only generated if the size of
-// the content is exactly the Object.Size
+// Hash returns the object Hash, the hash is calculated on-the-fly the first
+// time it's called, in all subsequent calls the same Hash is returned even
+// if the type or the content have changed. The Hash is only generated if the
+// size of the content is exactly the object size.
func (o *MemoryObject) Hash() Hash {
if o.h == ZeroHash && int64(len(o.cont)) == o.sz {
o.h = ComputeHash(o.t, o.cont)
diff --git a/plumbing/object/blob_test.go b/plumbing/object/blob_test.go
index 5ed9de0..181436d 100644
--- a/plumbing/object/blob_test.go
+++ b/plumbing/object/blob_test.go
@@ -1,6 +1,7 @@
package object
import (
+ "bytes"
"io"
"io/ioutil"
@@ -88,8 +89,26 @@
}
c.Assert(err, IsNil)
- c.Assert(b, DeepEquals, blobs[i])
- i += 1
+ c.Assert(b.ID(), Equals, blobs[i].ID())
+ c.Assert(b.Size, Equals, blobs[i].Size)
+ c.Assert(b.Type(), Equals, blobs[i].Type())
+
+ r1, err := b.Reader()
+ c.Assert(err, IsNil)
+
+ b1, err := ioutil.ReadAll(r1)
+ c.Assert(err, IsNil)
+ c.Assert(r1.Close(), IsNil)
+
+ r2, err := blobs[i].Reader()
+ c.Assert(err, IsNil)
+
+ b2, err := ioutil.ReadAll(r2)
+ c.Assert(err, IsNil)
+ c.Assert(r2.Close(), IsNil)
+
+ c.Assert(bytes.Compare(b1, b2), Equals, 0)
+ i++
}
iter.Close()
diff --git a/plumbing/object/change.go b/plumbing/object/change.go
index 729ff5a..a1b4c27 100644
--- a/plumbing/object/change.go
+++ b/plumbing/object/change.go
@@ -2,6 +2,7 @@
import (
"bytes"
+ "context"
"fmt"
"strings"
@@ -81,7 +82,15 @@
// Patch returns a Patch with all the file changes in chunks. This
// representation can be used to create several diff outputs.
func (c *Change) Patch() (*Patch, error) {
- return getPatch("", c)
+ return c.PatchContext(context.Background())
+}
+
+// Patch returns a Patch with all the file changes in chunks. This
+// representation can be used to create several diff outputs.
+// If context expires, an non-nil error will be returned
+// Provided context must be non-nil
+func (c *Change) PatchContext(ctx context.Context) (*Patch, error) {
+ return getPatchContext(ctx, "", c)
}
func (c *Change) name() string {
@@ -136,5 +145,13 @@
// Patch returns a Patch with all the changes in chunks. This
// representation can be used to create several diff outputs.
func (c Changes) Patch() (*Patch, error) {
- return getPatch("", c...)
+ return c.PatchContext(context.Background())
+}
+
+// Patch returns a Patch with all the changes in chunks. This
+// representation can be used to create several diff outputs.
+// If context expires, an non-nil error will be returned
+// Provided context must be non-nil
+func (c Changes) PatchContext(ctx context.Context) (*Patch, error) {
+ return getPatchContext(ctx, "", c...)
}
diff --git a/plumbing/object/change_test.go b/plumbing/object/change_test.go
index 7036fa3..b0e89c7 100644
--- a/plumbing/object/change_test.go
+++ b/plumbing/object/change_test.go
@@ -1,6 +1,7 @@
package object
import (
+ "context"
"sort"
"gopkg.in/src-d/go-git.v4/plumbing"
@@ -82,6 +83,12 @@
c.Assert(len(p.FilePatches()[0].Chunks()), Equals, 1)
c.Assert(p.FilePatches()[0].Chunks()[0].Type(), Equals, diff.Add)
+ p, err = change.PatchContext(context.Background())
+ c.Assert(err, IsNil)
+ c.Assert(len(p.FilePatches()), Equals, 1)
+ c.Assert(len(p.FilePatches()[0].Chunks()), Equals, 1)
+ c.Assert(p.FilePatches()[0].Chunks()[0].Type(), Equals, diff.Add)
+
str := change.String()
c.Assert(str, Equals, "<Action: Insert, Path: examples/clone/main.go>")
}
@@ -134,6 +141,12 @@
c.Assert(len(p.FilePatches()[0].Chunks()), Equals, 1)
c.Assert(p.FilePatches()[0].Chunks()[0].Type(), Equals, diff.Delete)
+ p, err = change.PatchContext(context.Background())
+ c.Assert(err, IsNil)
+ c.Assert(len(p.FilePatches()), Equals, 1)
+ c.Assert(len(p.FilePatches()[0].Chunks()), Equals, 1)
+ c.Assert(p.FilePatches()[0].Chunks()[0].Type(), Equals, diff.Delete)
+
str := change.String()
c.Assert(str, Equals, "<Action: Delete, Path: utils/difftree/difftree.go>")
}
@@ -206,6 +219,18 @@
c.Assert(p.FilePatches()[0].Chunks()[5].Type(), Equals, diff.Add)
c.Assert(p.FilePatches()[0].Chunks()[6].Type(), Equals, diff.Equal)
+ p, err = change.PatchContext(context.Background())
+ c.Assert(err, IsNil)
+ c.Assert(len(p.FilePatches()), Equals, 1)
+ c.Assert(len(p.FilePatches()[0].Chunks()), Equals, 7)
+ c.Assert(p.FilePatches()[0].Chunks()[0].Type(), Equals, diff.Equal)
+ c.Assert(p.FilePatches()[0].Chunks()[1].Type(), Equals, diff.Delete)
+ c.Assert(p.FilePatches()[0].Chunks()[2].Type(), Equals, diff.Add)
+ c.Assert(p.FilePatches()[0].Chunks()[3].Type(), Equals, diff.Equal)
+ c.Assert(p.FilePatches()[0].Chunks()[4].Type(), Equals, diff.Delete)
+ c.Assert(p.FilePatches()[0].Chunks()[5].Type(), Equals, diff.Add)
+ c.Assert(p.FilePatches()[0].Chunks()[6].Type(), Equals, diff.Equal)
+
str := change.String()
c.Assert(str, Equals, "<Action: Modify, Path: utils/difftree/difftree.go>")
}
@@ -367,3 +392,39 @@
sort.Sort(changes)
c.Assert(changes.String(), Equals, expected)
}
+
+func (s *ChangeSuite) TestCancel(c *C) {
+ // Commit a5078b19f08f63e7948abd0a5e2fb7d319d3a565 of the go-git
+ // fixture inserted "examples/clone/main.go".
+ //
+ // On that commit, the "examples/clone" tree is
+ // 6efca3ff41cab651332f9ebc0c96bb26be809615
+ //
+ // and the "examples/colone/main.go" is
+ // f95dc8f7923add1a8b9f72ecb1e8db1402de601a
+
+ path := "examples/clone/main.go"
+ name := "main.go"
+ mode := filemode.Regular
+ blob := plumbing.NewHash("f95dc8f7923add1a8b9f72ecb1e8db1402de601a")
+ tree := plumbing.NewHash("6efca3ff41cab651332f9ebc0c96bb26be809615")
+
+ change := &Change{
+ From: empty,
+ To: ChangeEntry{
+ Name: path,
+ Tree: s.tree(c, tree),
+ TreeEntry: TreeEntry{
+ Name: name,
+ Mode: mode,
+ Hash: blob,
+ },
+ },
+ }
+
+ ctx, cancel := context.WithCancel(context.Background())
+ cancel()
+ p, err := change.PatchContext(ctx)
+ c.Assert(p, IsNil)
+ c.Assert(err, ErrorMatches, "operation canceled")
+}
diff --git a/plumbing/object/commit.go b/plumbing/object/commit.go
index c9a4c0e..e254342 100644
--- a/plumbing/object/commit.go
+++ b/plumbing/object/commit.go
@@ -3,6 +3,7 @@
import (
"bufio"
"bytes"
+ "context"
"errors"
"fmt"
"io"
@@ -16,8 +17,9 @@
)
const (
- beginpgp string = "-----BEGIN PGP SIGNATURE-----"
- endpgp string = "-----END PGP SIGNATURE-----"
+ beginpgp string = "-----BEGIN PGP SIGNATURE-----"
+ endpgp string = "-----END PGP SIGNATURE-----"
+ headerpgp string = "gpgsig"
)
// Hash represents the hash of an object
@@ -75,7 +77,8 @@
}
// Patch returns the Patch between the actual commit and the provided one.
-func (c *Commit) Patch(to *Commit) (*Patch, error) {
+// Error will be return if context expires. Provided context must be non-nil
+func (c *Commit) PatchContext(ctx context.Context, to *Commit) (*Patch, error) {
fromTree, err := c.Tree()
if err != nil {
return nil, err
@@ -86,7 +89,12 @@
return nil, err
}
- return fromTree.Patch(toTree)
+ return fromTree.PatchContext(ctx, toTree)
+}
+
+// Patch returns the Patch between the actual commit and the provided one.
+func (c *Commit) Patch(to *Commit) (*Patch, error) {
+ return c.PatchContext(context.Background(), to)
}
// Parents return a CommitIter to the parent Commits.
@@ -174,23 +182,13 @@
}
if pgpsig {
- // Check if it's the end of a PGP signature.
- if bytes.Contains(line, []byte(endpgp)) {
- c.PGPSignature += endpgp + "\n"
- pgpsig = false
- } else {
- // Trim the left padding.
+ if len(line) > 0 && line[0] == ' ' {
line = bytes.TrimLeft(line, " ")
c.PGPSignature += string(line)
+ continue
+ } else {
+ pgpsig = false
}
- continue
- }
-
- // Check if it's the beginning of a PGP signature.
- if bytes.Contains(line, []byte(beginpgp)) {
- c.PGPSignature += beginpgp + "\n"
- pgpsig = true
- continue
}
if !message {
@@ -201,15 +199,24 @@
}
split := bytes.SplitN(line, []byte{' '}, 2)
+
+ var data []byte
+ if len(split) == 2 {
+ data = split[1]
+ }
+
switch string(split[0]) {
case "tree":
- c.TreeHash = plumbing.NewHash(string(split[1]))
+ c.TreeHash = plumbing.NewHash(string(data))
case "parent":
- c.ParentHashes = append(c.ParentHashes, plumbing.NewHash(string(split[1])))
+ c.ParentHashes = append(c.ParentHashes, plumbing.NewHash(string(data)))
case "author":
- c.Author.Decode(split[1])
+ c.Author.Decode(data)
case "committer":
- c.Committer.Decode(split[1])
+ c.Committer.Decode(data)
+ case headerpgp:
+ c.PGPSignature += string(data) + "\n"
+ pgpsig = true
}
} else {
c.Message += string(line)
@@ -262,17 +269,18 @@
}
if b.PGPSignature != "" && includeSig {
- if _, err = fmt.Fprint(w, "pgpsig"); err != nil {
+ if _, err = fmt.Fprint(w, "\n"+headerpgp+" "); err != nil {
return err
}
- // Split all the signature lines and write with a left padding and
- // newline at the end.
- lines := strings.Split(b.PGPSignature, "\n")
- for _, line := range lines {
- if _, err = fmt.Fprintf(w, " %s\n", line); err != nil {
- return err
- }
+ // Split all the signature lines and re-write with a left padding and
+ // newline. Use join for this so it's clear that a newline should not be
+ // added after this section, as it will be added when the message is
+ // printed.
+ signature := strings.TrimSuffix(b.PGPSignature, "\n")
+ lines := strings.Split(signature, "\n")
+ if _, err = fmt.Fprint(w, strings.Join(lines, "\n ")); err != nil {
+ return err
}
}
diff --git a/plumbing/object/commit_test.go b/plumbing/object/commit_test.go
index 191b14d..e72b703 100644
--- a/plumbing/object/commit_test.go
+++ b/plumbing/object/commit_test.go
@@ -2,6 +2,7 @@
import (
"bytes"
+ "context"
"io"
"strings"
"time"
@@ -132,6 +133,59 @@
c.Assert(buf.String(), Equals, patch.String())
}
+func (s *SuiteCommit) TestPatchContext(c *C) {
+ from := s.commit(c, plumbing.NewHash("918c48b83bd081e863dbe1b80f8998f058cd8294"))
+ to := s.commit(c, plumbing.NewHash("6ecf0ef2c2dffb796033e5a02219af86ec6584e5"))
+
+ patch, err := from.PatchContext(context.Background(), to)
+ c.Assert(err, IsNil)
+
+ buf := bytes.NewBuffer(nil)
+ err = patch.Encode(buf)
+ c.Assert(err, IsNil)
+
+ c.Assert(buf.String(), Equals, `diff --git a/vendor/foo.go b/vendor/foo.go
+new file mode 100644
+index 0000000000000000000000000000000000000000..9dea2395f5403188298c1dabe8bdafe562c491e3
+--- /dev/null
++++ b/vendor/foo.go
+@@ -0,0 +1,7 @@
++package main
++
++import "fmt"
++
++func main() {
++ fmt.Println("Hello, playground")
++}
+`)
+ c.Assert(buf.String(), Equals, patch.String())
+
+ from = s.commit(c, plumbing.NewHash("b8e471f58bcbca63b07bda20e428190409c2db47"))
+ to = s.commit(c, plumbing.NewHash("35e85108805c84807bc66a02d91535e1e24b38b9"))
+
+ patch, err = from.PatchContext(context.Background(), to)
+ c.Assert(err, IsNil)
+
+ buf.Reset()
+ err = patch.Encode(buf)
+ c.Assert(err, IsNil)
+
+ c.Assert(buf.String(), Equals, `diff --git a/CHANGELOG b/CHANGELOG
+deleted file mode 100644
+index d3ff53e0564a9f87d8e84b6e28e5060e517008aa..0000000000000000000000000000000000000000
+--- a/CHANGELOG
++++ /dev/null
+@@ -1 +0,0 @@
+-Initial changelog
+diff --git a/binary.jpg b/binary.jpg
+new file mode 100644
+index 0000000000000000000000000000000000000000..d5c0f4ab811897cadf03aec358ae60d21f91c50d
+Binary files /dev/null and b/binary.jpg differ
+`)
+
+ c.Assert(buf.String(), Equals, patch.String())
+}
+
func (s *SuiteCommit) TestCommitEncodeDecodeIdempotent(c *C) {
ts, err := time.Parse(time.RFC3339, "2006-01-02T15:04:05-07:00")
c.Assert(err, IsNil)
@@ -270,6 +324,54 @@
err = decoded.Decode(encoded)
c.Assert(err, IsNil)
c.Assert(decoded.PGPSignature, Equals, pgpsignature)
+
+ // signature with extra empty line, it caused "index out of range" when
+ // parsing it
+
+ pgpsignature2 := "\n" + pgpsignature
+
+ commit.PGPSignature = pgpsignature2
+ encoded = &plumbing.MemoryObject{}
+ decoded = &Commit{}
+
+ err = commit.Encode(encoded)
+ c.Assert(err, IsNil)
+
+ err = decoded.Decode(encoded)
+ c.Assert(err, IsNil)
+ c.Assert(decoded.PGPSignature, Equals, pgpsignature2)
+
+ // signature in author name
+
+ commit.PGPSignature = ""
+ commit.Author.Name = beginpgp
+ encoded = &plumbing.MemoryObject{}
+ decoded = &Commit{}
+
+ err = commit.Encode(encoded)
+ c.Assert(err, IsNil)
+
+ err = decoded.Decode(encoded)
+ c.Assert(err, IsNil)
+ c.Assert(decoded.PGPSignature, Equals, "")
+ c.Assert(decoded.Author.Name, Equals, beginpgp)
+
+ // broken signature
+
+ commit.PGPSignature = beginpgp + "\n" +
+ "some\n" +
+ "trash\n" +
+ endpgp +
+ "text\n"
+ encoded = &plumbing.MemoryObject{}
+ decoded = &Commit{}
+
+ err = commit.Encode(encoded)
+ c.Assert(err, IsNil)
+
+ err = decoded.Decode(encoded)
+ c.Assert(err, IsNil)
+ c.Assert(decoded.PGPSignature, Equals, commit.PGPSignature)
}
func (s *SuiteCommit) TestStat(c *C) {
@@ -363,3 +465,33 @@
_, ok := e.Identities["Sunny <me@darkowlzz.space>"]
c.Assert(ok, Equals, true)
}
+
+func (s *SuiteCommit) TestPatchCancel(c *C) {
+ from := s.commit(c, plumbing.NewHash("918c48b83bd081e863dbe1b80f8998f058cd8294"))
+ to := s.commit(c, plumbing.NewHash("6ecf0ef2c2dffb796033e5a02219af86ec6584e5"))
+
+ ctx, cancel := context.WithCancel(context.Background())
+ cancel()
+ patch, err := from.PatchContext(ctx, to)
+ c.Assert(patch, IsNil)
+ c.Assert(err, ErrorMatches, "operation canceled")
+
+}
+
+func (s *SuiteCommit) TestMalformedHeader(c *C) {
+ encoded := &plumbing.MemoryObject{}
+ decoded := &Commit{}
+ commit := *s.Commit
+
+ commit.PGPSignature = "\n"
+ commit.Author.Name = "\n"
+ commit.Author.Email = "\n"
+ commit.Committer.Name = "\n"
+ commit.Committer.Email = "\n"
+
+ err := commit.Encode(encoded)
+ c.Assert(err, IsNil)
+
+ err = decoded.Decode(encoded)
+ c.Assert(err, IsNil)
+}
diff --git a/plumbing/object/difftree.go b/plumbing/object/difftree.go
index ac58c4d..a30a29e 100644
--- a/plumbing/object/difftree.go
+++ b/plumbing/object/difftree.go
@@ -2,6 +2,7 @@
import (
"bytes"
+ "context"
"gopkg.in/src-d/go-git.v4/utils/merkletrie"
"gopkg.in/src-d/go-git.v4/utils/merkletrie/noder"
@@ -10,6 +11,13 @@
// DiffTree compares the content and mode of the blobs found via two
// tree objects.
func DiffTree(a, b *Tree) (Changes, error) {
+ return DiffTreeContext(context.Background(), a, b)
+}
+
+// DiffTree compares the content and mode of the blobs found via two
+// tree objects. Provided context must be non-nil.
+// An error will be return if context expires
+func DiffTreeContext(ctx context.Context, a, b *Tree) (Changes, error) {
from := NewTreeRootNode(a)
to := NewTreeRootNode(b)
@@ -17,8 +25,11 @@
return bytes.Equal(a.Hash(), b.Hash())
}
- merkletrieChanges, err := merkletrie.DiffTree(from, to, hashEqual)
+ merkletrieChanges, err := merkletrie.DiffTreeContext(ctx, from, to, hashEqual)
if err != nil {
+ if err == merkletrie.ErrCanceled {
+ return nil, ErrCanceled
+ }
return nil, err
}
diff --git a/plumbing/object/difftree_test.go b/plumbing/object/difftree_test.go
index 40af8f2..ff9ecbc 100644
--- a/plumbing/object/difftree_test.go
+++ b/plumbing/object/difftree_test.go
@@ -45,25 +45,17 @@
return sto
}
- sto = memory.NewStorage()
+ storer := memory.NewStorage()
pf := f.Packfile()
-
defer pf.Close()
- n := packfile.NewScanner(pf)
- d, err := packfile.NewDecoder(n, sto)
- if err != nil {
+ if err := packfile.UpdateObjectStorage(storer, pf); err != nil {
panic(err)
}
- _, err = d.Decode()
- if err != nil {
- panic(err)
- }
-
- s.cache[f.URL] = sto
- return sto
+ s.cache[f.URL] = storer
+ return storer
}
var _ = Suite(&DiffTreeSuite{})
diff --git a/plumbing/object/object.go b/plumbing/object/object.go
index 4b59aba..e960e50 100644
--- a/plumbing/object/object.go
+++ b/plumbing/object/object.go
@@ -152,7 +152,11 @@
}
func (s *Signature) encodeTimeAndTimeZone(w io.Writer) error {
- _, err := fmt.Fprintf(w, "%d %s", s.When.Unix(), s.When.Format("-0700"))
+ u := s.When.Unix()
+ if u < 0 {
+ u = 0
+ }
+ _, err := fmt.Fprintf(w, "%d %s", u, s.When.Format("-0700"))
return err
}
diff --git a/plumbing/object/object_test.go b/plumbing/object/object_test.go
index 4f0fcb3..68aa1a1 100644
--- a/plumbing/object/object_test.go
+++ b/plumbing/object/object_test.go
@@ -197,8 +197,9 @@
}
c.Assert(err, IsNil)
- c.Assert(o, DeepEquals, objects[i])
- i += 1
+ c.Assert(o.ID(), Equals, objects[i].ID())
+ c.Assert(o.Type(), Equals, objects[i].Type())
+ i++
}
iter.Close()
diff --git a/plumbing/object/patch.go b/plumbing/object/patch.go
index aa96a96..adeaccb 100644
--- a/plumbing/object/patch.go
+++ b/plumbing/object/patch.go
@@ -2,6 +2,8 @@
import (
"bytes"
+ "context"
+ "errors"
"fmt"
"io"
"math"
@@ -15,10 +17,25 @@
dmp "github.com/sergi/go-diff/diffmatchpatch"
)
+var (
+ ErrCanceled = errors.New("operation canceled")
+)
+
func getPatch(message string, changes ...*Change) (*Patch, error) {
+ ctx := context.Background()
+ return getPatchContext(ctx, message, changes...)
+}
+
+func getPatchContext(ctx context.Context, message string, changes ...*Change) (*Patch, error) {
var filePatches []fdiff.FilePatch
for _, c := range changes {
- fp, err := filePatch(c)
+ select {
+ case <-ctx.Done():
+ return nil, ErrCanceled
+ default:
+ }
+
+ fp, err := filePatchWithContext(ctx, c)
if err != nil {
return nil, err
}
@@ -29,7 +46,7 @@
return &Patch{message, filePatches}, nil
}
-func filePatch(c *Change) (fdiff.FilePatch, error) {
+func filePatchWithContext(ctx context.Context, c *Change) (fdiff.FilePatch, error) {
from, to, err := c.Files()
if err != nil {
return nil, err
@@ -52,6 +69,12 @@
var chunks []fdiff.Chunk
for _, d := range diffs {
+ select {
+ case <-ctx.Done():
+ return nil, ErrCanceled
+ default:
+ }
+
var op fdiff.Operation
switch d.Type {
case dmp.DiffEqual:
@@ -70,6 +93,11 @@
from: c.From,
to: c.To,
}, nil
+
+}
+
+func filePatch(c *Change) (fdiff.FilePatch, error) {
+ return filePatchWithContext(context.Background(), c)
}
func fileContent(f *File) (content string, isBinary bool, err error) {
diff --git a/plumbing/object/tag_test.go b/plumbing/object/tag_test.go
index 9900093..e7dd06e 100644
--- a/plumbing/object/tag_test.go
+++ b/plumbing/object/tag_test.go
@@ -265,7 +265,7 @@
c.Assert(tag.String(), Equals,
"tag TAG TWO\n"+
"Tagger: <>\n"+
- "Date: Mon Jan 01 00:00:00 0001 +0000\n"+
+ "Date: Thu Jan 01 00:00:00 1970 +0000\n"+
"\n"+
"tag two\n")
}
diff --git a/plumbing/object/tree.go b/plumbing/object/tree.go
index 30bbcb0..c36a137 100644
--- a/plumbing/object/tree.go
+++ b/plumbing/object/tree.go
@@ -2,6 +2,7 @@
import (
"bufio"
+ "context"
"errors"
"fmt"
"io"
@@ -25,6 +26,7 @@
ErrMaxTreeDepth = errors.New("maximum tree depth exceeded")
ErrFileNotFound = errors.New("file not found")
ErrDirectoryNotFound = errors.New("directory not found")
+ ErrEntryNotFound = errors.New("entry not found")
)
// Tree is basically like a directory - it references a bunch of other trees
@@ -166,8 +168,6 @@
return tree, err
}
-var errEntryNotFound = errors.New("entry not found")
-
func (t *Tree) entry(baseName string) (*TreeEntry, error) {
if t.m == nil {
t.buildMap()
@@ -175,7 +175,7 @@
entry, ok := t.m[baseName]
if !ok {
- return nil, errEntryNotFound
+ return nil, ErrEntryNotFound
}
return entry, nil
@@ -295,15 +295,30 @@
return DiffTree(from, to)
}
+// Diff returns a list of changes between this tree and the provided one
+// Error will be returned if context expires
+// Provided context must be non nil
+func (from *Tree) DiffContext(ctx context.Context, to *Tree) (Changes, error) {
+ return DiffTreeContext(ctx, from, to)
+}
+
// Patch returns a slice of Patch objects with all the changes between trees
// in chunks. This representation can be used to create several diff outputs.
func (from *Tree) Patch(to *Tree) (*Patch, error) {
- changes, err := DiffTree(from, to)
+ return from.PatchContext(context.Background(), to)
+}
+
+// Patch returns a slice of Patch objects with all the changes between trees
+// in chunks. This representation can be used to create several diff outputs.
+// If context expires, an error will be returned
+// Provided context must be non-nil
+func (from *Tree) PatchContext(ctx context.Context, to *Tree) (*Patch, error) {
+ changes, err := DiffTreeContext(ctx, from, to)
if err != nil {
return nil, err
}
- return changes.Patch()
+ return changes.PatchContext(ctx)
}
// treeEntryIter facilitates iterating through the TreeEntry objects in a Tree.
diff --git a/plumbing/object/tree_test.go b/plumbing/object/tree_test.go
index 3a687dd..59d5d21 100644
--- a/plumbing/object/tree_test.go
+++ b/plumbing/object/tree_test.go
@@ -114,6 +114,12 @@
c.Assert(e.Name, Equals, "foo.go")
}
+func (s *TreeSuite) TestFindEntryNotFound(c *C) {
+ e, err := s.Tree.FindEntry("not-found")
+ c.Assert(e, IsNil)
+ c.Assert(err, Equals, ErrEntryNotFound)
+}
+
// Overrides returned plumbing.EncodedObject for given hash.
// Otherwise, delegates to actual storer to get real object
type fakeStorer struct {
diff --git a/plumbing/transport/internal/common/common.go b/plumbing/transport/internal/common/common.go
index 8ec1ea5..00497f3 100644
--- a/plumbing/transport/internal/common/common.go
+++ b/plumbing/transport/internal/common/common.go
@@ -382,6 +382,7 @@
gitProtocolNotFoundErr = "ERR \n Repository not found."
gitProtocolNoSuchErr = "ERR no such repository"
gitProtocolAccessDeniedErr = "ERR access denied"
+ gogsAccessDeniedErr = "Gogs: Repository does not exist or you do not have access"
)
func isRepoNotFoundError(s string) bool {
@@ -409,6 +410,10 @@
return true
}
+ if strings.HasPrefix(s, gogsAccessDeniedErr) {
+ return true
+ }
+
return false
}
diff --git a/plumbing/transport/internal/common/common_test.go b/plumbing/transport/internal/common/common_test.go
new file mode 100644
index 0000000..b2f035d
--- /dev/null
+++ b/plumbing/transport/internal/common/common_test.go
@@ -0,0 +1,78 @@
+package common
+
+import (
+ "fmt"
+ "testing"
+
+ . "gopkg.in/check.v1"
+)
+
+func Test(t *testing.T) { TestingT(t) }
+
+type CommonSuite struct{}
+
+var _ = Suite(&CommonSuite{})
+
+func (s *CommonSuite) TestIsRepoNotFoundErrorForUnknowSource(c *C) {
+ msg := "unknown system is complaining of something very sad :("
+
+ isRepoNotFound := isRepoNotFoundError(msg)
+
+ c.Assert(isRepoNotFound, Equals, false)
+}
+
+func (s *CommonSuite) TestIsRepoNotFoundErrorForGithub(c *C) {
+ msg := fmt.Sprintf("%s : some error stuf", githubRepoNotFoundErr)
+
+ isRepoNotFound := isRepoNotFoundError(msg)
+
+ c.Assert(isRepoNotFound, Equals, true)
+}
+
+func (s *CommonSuite) TestIsRepoNotFoundErrorForBitBucket(c *C) {
+ msg := fmt.Sprintf("%s : some error stuf", bitbucketRepoNotFoundErr)
+
+ isRepoNotFound := isRepoNotFoundError(msg)
+
+ c.Assert(isRepoNotFound, Equals, true)
+}
+
+func (s *CommonSuite) TestIsRepoNotFoundErrorForLocal(c *C) {
+ msg := fmt.Sprintf("some error stuf : %s", localRepoNotFoundErr)
+
+ isRepoNotFound := isRepoNotFoundError(msg)
+
+ c.Assert(isRepoNotFound, Equals, true)
+}
+
+func (s *CommonSuite) TestIsRepoNotFoundErrorForGitProtocolNotFound(c *C) {
+ msg := fmt.Sprintf("%s : some error stuf", gitProtocolNotFoundErr)
+
+ isRepoNotFound := isRepoNotFoundError(msg)
+
+ c.Assert(isRepoNotFound, Equals, true)
+}
+
+func (s *CommonSuite) TestIsRepoNotFoundErrorForGitProtocolNoSuch(c *C) {
+ msg := fmt.Sprintf("%s : some error stuf", gitProtocolNoSuchErr)
+
+ isRepoNotFound := isRepoNotFoundError(msg)
+
+ c.Assert(isRepoNotFound, Equals, true)
+}
+
+func (s *CommonSuite) TestIsRepoNotFoundErrorForGitProtocolAccessDenied(c *C) {
+ msg := fmt.Sprintf("%s : some error stuf", gitProtocolAccessDeniedErr)
+
+ isRepoNotFound := isRepoNotFoundError(msg)
+
+ c.Assert(isRepoNotFound, Equals, true)
+}
+
+func (s *CommonSuite) TestIsRepoNotFoundErrorForGogsAccessDenied(c *C) {
+ msg := fmt.Sprintf("%s : some error stuf", gogsAccessDeniedErr)
+
+ isRepoNotFound := isRepoNotFoundError(msg)
+
+ c.Assert(isRepoNotFound, Equals, true)
+}
diff --git a/plumbing/transport/test/receive_pack.go b/plumbing/transport/test/receive_pack.go
index 57f602d..5aea1c0 100644
--- a/plumbing/transport/test/receive_pack.go
+++ b/plumbing/transport/test/receive_pack.go
@@ -262,13 +262,16 @@
req.Packfile = s.emptyPackfile()
}
- return r.ReceivePack(context.Background(), req)
+ if s, err := r.ReceivePack(context.Background(), req); err != nil {
+ return s, err
+ } else {
+ return s, err
+ }
}
func (s *ReceivePackSuite) receivePack(c *C, ep *transport.Endpoint,
req *packp.ReferenceUpdateRequest, fixture *fixtures.Fixture,
callAdvertisedReferences bool) {
-
url := ""
if fixture != nil {
url = fixture.URL
@@ -279,7 +282,6 @@
ep.String(), url, callAdvertisedReferences,
)
report, err := s.receivePackNoCheck(c, ep, req, fixture, callAdvertisedReferences)
-
c.Assert(err, IsNil, comment)
if req.Capabilities.Supports(capability.ReportStatus) {
c.Assert(report, NotNil, comment)
diff --git a/plumbing/transport/test/upload_pack.go b/plumbing/transport/test/upload_pack.go
index 70e4e56..8709ac2 100644
--- a/plumbing/transport/test/upload_pack.go
+++ b/plumbing/transport/test/upload_pack.go
@@ -258,11 +258,8 @@
b, err := ioutil.ReadAll(r)
c.Assert(err, IsNil)
buf := bytes.NewBuffer(b)
- scanner := packfile.NewScanner(buf)
storage := memory.NewStorage()
- d, err := packfile.NewDecoder(scanner, storage)
- c.Assert(err, IsNil)
- _, err = d.Decode()
+ err = packfile.UpdateObjectStorage(storage, buf)
c.Assert(err, IsNil)
c.Assert(len(storage.Objects), Equals, n)
}
diff --git a/remote.go b/remote.go
index 60461d6..0556b98 100644
--- a/remote.go
+++ b/remote.go
@@ -619,7 +619,7 @@
return result, nil
}
-const refspecTag = "+refs/tags/*:refs/tags/*"
+const refspecAllTags = "+refs/tags/*:refs/tags/*"
func calculateRefs(
spec []config.RefSpec,
@@ -627,17 +627,32 @@
tagMode TagMode,
) (memory.ReferenceStorage, error) {
if tagMode == AllTags {
- spec = append(spec, refspecTag)
- }
-
- iter, err := remoteRefs.IterReferences()
- if err != nil {
- return nil, err
+ spec = append(spec, refspecAllTags)
}
refs := make(memory.ReferenceStorage)
- return refs, iter.ForEach(func(ref *plumbing.Reference) error {
- if !config.MatchAny(spec, ref.Name()) {
+ for _, s := range spec {
+ if err := doCalculateRefs(s, remoteRefs, refs); err != nil {
+ return nil, err
+ }
+ }
+
+ return refs, nil
+}
+
+func doCalculateRefs(
+ s config.RefSpec,
+ remoteRefs storer.ReferenceStorer,
+ refs memory.ReferenceStorage,
+) error {
+ iter, err := remoteRefs.IterReferences()
+ if err != nil {
+ return err
+ }
+
+ var matched bool
+ err = iter.ForEach(func(ref *plumbing.Reference) error {
+ if !s.Match(ref.Name()) {
return nil
}
@@ -654,8 +669,23 @@
return nil
}
- return refs.SetReference(ref)
+ matched = true
+ if err := refs.SetReference(ref); err != nil {
+ return err
+ }
+
+ if !s.IsWildcard() {
+ return storer.ErrStop
+ }
+
+ return nil
})
+
+ if !matched && !s.IsWildcard() {
+ return fmt.Errorf("couldn't find remote ref %q", s.Src())
+ }
+
+ return err
}
func getWants(localStorer storage.Storer, refs memory.ReferenceStorage) ([]plumbing.Hash, error) {
diff --git a/remote_test.go b/remote_test.go
index 82ec1fc..dd386b0 100644
--- a/remote_test.go
+++ b/remote_test.go
@@ -100,6 +100,20 @@
})
}
+func (s *RemoteSuite) TestFetchNonExistantReference(c *C) {
+ r := newRemote(memory.NewStorage(), &config.RemoteConfig{
+ URLs: []string{s.GetLocalRepositoryURL(fixtures.ByTag("tags").One())},
+ })
+
+ err := r.Fetch(&FetchOptions{
+ RefSpecs: []config.RefSpec{
+ config.RefSpec("+refs/heads/foo:refs/remotes/origin/foo"),
+ },
+ })
+
+ c.Assert(err, ErrorMatches, "couldn't find remote ref.*")
+}
+
func (s *RemoteSuite) TestFetchContext(c *C) {
r := newRemote(memory.NewStorage(), &config.RemoteConfig{
URLs: []string{s.GetLocalRepositoryURL(fixtures.ByTag("tags").One())},
diff --git a/repository.go b/repository.go
index 717381b..f619934 100644
--- a/repository.go
+++ b/repository.go
@@ -235,9 +235,8 @@
return PlainOpenWithOptions(path, &PlainOpenOptions{})
}
-// PlainOpen opens a git repository from the given path. It detects if the
-// repository is bare or a normal one. If the path doesn't contain a valid
-// repository ErrRepositoryNotExists is returned
+// PlainOpenWithOptions opens a git repository from the given path with specific
+// options. See PlainOpen for more info.
func PlainOpenWithOptions(path string, o *PlainOpenOptions) (*Repository, error) {
dot, wt, err := dotGitToOSFilesystems(path, o.DetectDotGit)
if err != nil {
@@ -583,7 +582,7 @@
}
const (
- refspecTagWithDepth = "+refs/tags/%s:refs/tags/%[1]s"
+ refspecTag = "+refs/tags/%s:refs/tags/%[1]s"
refspecSingleBranch = "+refs/heads/%s:refs/remotes/%s/%[1]s"
refspecSingleBranchHEAD = "+HEAD:refs/remotes/%s/HEAD"
)
@@ -592,8 +591,8 @@
var rs string
switch {
- case o.ReferenceName.IsTag() && o.Depth > 0:
- rs = fmt.Sprintf(refspecTagWithDepth, o.ReferenceName.Short())
+ case o.ReferenceName.IsTag():
+ rs = fmt.Sprintf(refspecTag, o.ReferenceName.Short())
case o.SingleBranch && o.ReferenceName == plumbing.HEAD:
rs = fmt.Sprintf(refspecSingleBranchHEAD, c.Name)
case o.SingleBranch:
@@ -845,8 +844,9 @@
return nil, fmt.Errorf("invalid Order=%v", o.Order)
}
-// Tags returns all the References from Tags. This method returns all the tag
-// types, lightweight, and annotated ones.
+// Tags returns all the References from Tags. This method returns only lightweight
+// tags. Note that not all the tags are lightweight ones. To return annotated tags
+// too, you need to call TagObjects() method.
func (r *Repository) Tags() (storer.ReferenceIter, error) {
refIter, err := r.Storer.IterReferences()
if err != nil {
@@ -872,7 +872,8 @@
}, refIter), nil
}
-// Notes returns all the References that are Branches.
+// Notes returns all the References that are notes. For more information:
+// https://git-scm.com/docs/git-notes
func (r *Repository) Notes() (storer.ReferenceIter, error) {
refIter, err := r.Storer.IterReferences()
if err != nil {
diff --git a/repository_test.go b/repository_test.go
index b78fbb7..261af7a 100644
--- a/repository_test.go
+++ b/repository_test.go
@@ -846,7 +846,33 @@
objects, err := r.Objects()
c.Assert(err, IsNil)
objects.ForEach(func(object.Object) error { count++; return nil })
- c.Assert(count, Equals, 31)
+ c.Assert(count, Equals, 28)
+}
+
+func (s *RepositorySuite) TestCloneDetachedHEADAndSingle(c *C) {
+ r, _ := Init(memory.NewStorage(), nil)
+ err := r.clone(context.Background(), &CloneOptions{
+ URL: s.GetBasicLocalRepositoryURL(),
+ ReferenceName: plumbing.ReferenceName("refs/tags/v1.0.0"),
+ SingleBranch: true,
+ })
+ c.Assert(err, IsNil)
+
+ cfg, err := r.Config()
+ c.Assert(err, IsNil)
+ c.Assert(cfg.Branches, HasLen, 0)
+
+ head, err := r.Reference(plumbing.HEAD, false)
+ c.Assert(err, IsNil)
+ c.Assert(head, NotNil)
+ c.Assert(head.Type(), Equals, plumbing.HashReference)
+ c.Assert(head.Hash().String(), Equals, "6ecf0ef2c2dffb796033e5a02219af86ec6584e5")
+
+ count := 0
+ objects, err := r.Objects()
+ c.Assert(err, IsNil)
+ objects.ForEach(func(object.Object) error { count++; return nil })
+ c.Assert(count, Equals, 28)
}
func (s *RepositorySuite) TestCloneDetachedHEADAndShallow(c *C) {
@@ -1688,3 +1714,59 @@
})
c.Assert(err, IsNil)
}
+
+func BenchmarkObjects(b *testing.B) {
+ if err := fixtures.Init(); err != nil {
+ b.Fatal(err)
+ }
+
+ defer func() {
+ if err := fixtures.Clean(); err != nil {
+ b.Fatal(err)
+ }
+ }()
+
+ for _, f := range fixtures.ByTag("packfile") {
+ if f.DotGitHash == plumbing.ZeroHash {
+ continue
+ }
+
+ b.Run(f.URL, func(b *testing.B) {
+ fs := f.DotGit()
+ storer, err := filesystem.NewStorage(fs)
+ if err != nil {
+ b.Fatal(err)
+ }
+
+ worktree, err := fs.Chroot(filepath.Dir(fs.Root()))
+ if err != nil {
+ b.Fatal(err)
+ }
+
+ repo, err := Open(storer, worktree)
+ if err != nil {
+ b.Fatal(err)
+ }
+
+ for i := 0; i < b.N; i++ {
+ iter, err := repo.Objects()
+ if err != nil {
+ b.Fatal(err)
+ }
+
+ for {
+ _, err := iter.Next()
+ if err == io.EOF {
+ break
+ }
+
+ if err != nil {
+ b.Fatal(err)
+ }
+ }
+
+ iter.Close()
+ }
+ })
+ }
+}
diff --git a/status.go b/status.go
index ef8a500..ecbf793 100644
--- a/status.go
+++ b/status.go
@@ -1,7 +1,10 @@
package git
-import "fmt"
-import "bytes"
+import (
+ "bytes"
+ "fmt"
+ "path/filepath"
+)
// Status represents the current status of a Worktree.
// The key of the map is the path of the file.
@@ -17,6 +20,12 @@
return s[path]
}
+// IsUntracked checks if file for given path is 'Untracked'
+func (s Status) IsUntracked(path string) bool {
+ stat, ok := (s)[filepath.ToSlash(path)]
+ return ok && stat.Worktree == Untracked
+}
+
// IsClean returns true if all the files aren't in Unmodified status.
func (s Status) IsClean() bool {
for _, status := range s {
diff --git a/storage/filesystem/dotgit/dotgit.go b/storage/filesystem/dotgit/dotgit.go
index 52b621c..df5cd10 100644
--- a/storage/filesystem/dotgit/dotgit.go
+++ b/storage/filesystem/dotgit/dotgit.go
@@ -57,17 +57,48 @@
ErrSymRefTargetNotFound = errors.New("symbolic reference target not found")
)
+// Options holds configuration for the storage.
+type Options struct {
+ // ExclusiveAccess means that the filesystem is not modified externally
+ // while the repo is open.
+ ExclusiveAccess bool
+ // KeepDescriptors makes the file descriptors to be reused but they will
+ // need to be manually closed calling Close().
+ KeepDescriptors bool
+}
+
// The DotGit type represents a local git repository on disk. This
// type is not zero-value-safe, use the New function to initialize it.
type DotGit struct {
- fs billy.Filesystem
+ options Options
+ fs billy.Filesystem
+
+ // incoming object directory information
+ incomingChecked bool
+ incomingDirName string
+
+ objectList []plumbing.Hash
+ objectMap map[plumbing.Hash]struct{}
+ packList []plumbing.Hash
+ packMap map[plumbing.Hash]struct{}
+
+ files map[string]billy.File
}
// New returns a DotGit value ready to be used. The path argument must
// be the absolute path of a git repository directory (e.g.
// "/foo/bar/.git").
func New(fs billy.Filesystem) *DotGit {
- return &DotGit{fs: fs}
+ return NewWithOptions(fs, Options{})
+}
+
+// NewWithOptions creates a new DotGit and sets non default configuration
+// options. See New for complete help.
+func NewWithOptions(fs billy.Filesystem, o Options) *DotGit {
+ return &DotGit{
+ options: o,
+ fs: fs,
+ }
}
// Initialize creates all the folder scaffolding.
@@ -97,6 +128,28 @@
return nil
}
+// Close closes all opened files.
+func (d *DotGit) Close() error {
+ var firstError error
+ if d.files != nil {
+ for _, f := range d.files {
+ err := f.Close()
+ if err != nil && firstError == nil {
+ firstError = err
+ continue
+ }
+ }
+
+ d.files = nil
+ }
+
+ if firstError != nil {
+ return firstError
+ }
+
+ return nil
+}
+
// ConfigWriter returns a file pointer for write to the config file
func (d *DotGit) ConfigWriter() (billy.File, error) {
return d.fs.Create(configPath)
@@ -139,11 +192,25 @@
// NewObjectPack return a writer for a new packfile, it saves the packfile to
// disk and also generates and save the index for the given packfile.
func (d *DotGit) NewObjectPack() (*PackWriter, error) {
+ d.cleanPackList()
return newPackWrite(d.fs)
}
// ObjectPacks returns the list of availables packfiles
func (d *DotGit) ObjectPacks() ([]plumbing.Hash, error) {
+ if !d.options.ExclusiveAccess {
+ return d.objectPacks()
+ }
+
+ err := d.genPackList()
+ if err != nil {
+ return nil, err
+ }
+
+ return d.packList, nil
+}
+
+func (d *DotGit) objectPacks() ([]plumbing.Hash, error) {
packDir := d.fs.Join(objectsPath, packPath)
files, err := d.fs.ReadDir(packDir)
if err != nil {
@@ -177,7 +244,22 @@
}
func (d *DotGit) objectPackOpen(hash plumbing.Hash, extension string) (billy.File, error) {
- pack, err := d.fs.Open(d.objectPackPath(hash, extension))
+ if d.files == nil {
+ d.files = make(map[string]billy.File)
+ }
+
+ err := d.hasPack(hash)
+ if err != nil {
+ return nil, err
+ }
+
+ path := d.objectPackPath(hash, extension)
+ f, ok := d.files[path]
+ if ok {
+ return f, nil
+ }
+
+ pack, err := d.fs.Open(path)
if err != nil {
if os.IsNotExist(err) {
return nil, ErrPackfileNotFound
@@ -186,20 +268,36 @@
return nil, err
}
+ if d.options.KeepDescriptors && extension == "pack" {
+ d.files[path] = pack
+ }
+
return pack, nil
}
// ObjectPack returns a fs.File of the given packfile
func (d *DotGit) ObjectPack(hash plumbing.Hash) (billy.File, error) {
+ err := d.hasPack(hash)
+ if err != nil {
+ return nil, err
+ }
+
return d.objectPackOpen(hash, `pack`)
}
// ObjectPackIdx returns a fs.File of the index file for a given packfile
func (d *DotGit) ObjectPackIdx(hash plumbing.Hash) (billy.File, error) {
+ err := d.hasPack(hash)
+ if err != nil {
+ return nil, err
+ }
+
return d.objectPackOpen(hash, `idx`)
}
func (d *DotGit) DeleteOldObjectPackAndIndex(hash plumbing.Hash, t time.Time) error {
+ d.cleanPackList()
+
path := d.objectPackPath(hash, `pack`)
if !t.IsZero() {
fi, err := d.fs.Stat(path)
@@ -220,12 +318,23 @@
// NewObject return a writer for a new object file.
func (d *DotGit) NewObject() (*ObjectWriter, error) {
+ d.cleanObjectList()
+
return newObjectWriter(d.fs)
}
// Objects returns a slice with the hashes of objects found under the
// .git/objects/ directory.
func (d *DotGit) Objects() ([]plumbing.Hash, error) {
+ if d.options.ExclusiveAccess {
+ err := d.genObjectList()
+ if err != nil {
+ return nil, err
+ }
+
+ return d.objectList, nil
+ }
+
var objects []plumbing.Hash
err := d.ForEachObjectHash(func(hash plumbing.Hash) error {
objects = append(objects, hash)
@@ -237,9 +346,29 @@
return objects, nil
}
-// Objects returns a slice with the hashes of objects found under the
-// .git/objects/ directory.
+// ForEachObjectHash iterates over the hashes of objects found under the
+// .git/objects/ directory and executes the provided function.
func (d *DotGit) ForEachObjectHash(fun func(plumbing.Hash) error) error {
+ if !d.options.ExclusiveAccess {
+ return d.forEachObjectHash(fun)
+ }
+
+ err := d.genObjectList()
+ if err != nil {
+ return err
+ }
+
+ for _, h := range d.objectList {
+ err := fun(h)
+ if err != nil {
+ return err
+ }
+ }
+
+ return nil
+}
+
+func (d *DotGit) forEachObjectHash(fun func(plumbing.Hash) error) error {
files, err := d.fs.ReadDir(objectsPath)
if err != nil {
if os.IsNotExist(err) {
@@ -274,24 +403,178 @@
return nil
}
+func (d *DotGit) cleanObjectList() {
+ d.objectMap = nil
+ d.objectList = nil
+}
+
+func (d *DotGit) genObjectList() error {
+ if d.objectMap != nil {
+ return nil
+ }
+
+ d.objectMap = make(map[plumbing.Hash]struct{})
+ return d.forEachObjectHash(func(h plumbing.Hash) error {
+ d.objectList = append(d.objectList, h)
+ d.objectMap[h] = struct{}{}
+
+ return nil
+ })
+}
+
+func (d *DotGit) hasObject(h plumbing.Hash) error {
+ if !d.options.ExclusiveAccess {
+ return nil
+ }
+
+ err := d.genObjectList()
+ if err != nil {
+ return err
+ }
+
+ _, ok := d.objectMap[h]
+ if !ok {
+ return plumbing.ErrObjectNotFound
+ }
+
+ return nil
+}
+
+func (d *DotGit) cleanPackList() {
+ d.packMap = nil
+ d.packList = nil
+}
+
+func (d *DotGit) genPackList() error {
+ if d.packMap != nil {
+ return nil
+ }
+
+ op, err := d.objectPacks()
+ if err != nil {
+ return err
+ }
+
+ d.packMap = make(map[plumbing.Hash]struct{})
+ d.packList = nil
+
+ for _, h := range op {
+ d.packList = append(d.packList, h)
+ d.packMap[h] = struct{}{}
+ }
+
+ return nil
+}
+
+func (d *DotGit) hasPack(h plumbing.Hash) error {
+ if !d.options.ExclusiveAccess {
+ return nil
+ }
+
+ err := d.genPackList()
+ if err != nil {
+ return err
+ }
+
+ _, ok := d.packMap[h]
+ if !ok {
+ return ErrPackfileNotFound
+ }
+
+ return nil
+}
+
func (d *DotGit) objectPath(h plumbing.Hash) string {
hash := h.String()
return d.fs.Join(objectsPath, hash[0:2], hash[2:40])
}
+// incomingObjectPath is intended to add support for a git pre-receive hook
+// to be written it adds support for go-git to find objects in an "incoming"
+// directory, so that the library can be used to write a pre-receive hook
+// that deals with the incoming objects.
+//
+// More on git hooks found here : https://git-scm.com/docs/githooks
+// More on 'quarantine'/incoming directory here:
+// https://git-scm.com/docs/git-receive-pack
+func (d *DotGit) incomingObjectPath(h plumbing.Hash) string {
+ hString := h.String()
+
+ if d.incomingDirName == "" {
+ return d.fs.Join(objectsPath, hString[0:2], hString[2:40])
+ }
+
+ return d.fs.Join(objectsPath, d.incomingDirName, hString[0:2], hString[2:40])
+}
+
+// hasIncomingObjects searches for an incoming directory and keeps its name
+// so it doesn't have to be found each time an object is accessed.
+func (d *DotGit) hasIncomingObjects() bool {
+ if !d.incomingChecked {
+ directoryContents, err := d.fs.ReadDir(objectsPath)
+ if err == nil {
+ for _, file := range directoryContents {
+ if strings.HasPrefix(file.Name(), "incoming-") && file.IsDir() {
+ d.incomingDirName = file.Name()
+ }
+ }
+ }
+
+ d.incomingChecked = true
+ }
+
+ return d.incomingDirName != ""
+}
+
// Object returns a fs.File pointing the object file, if exists
func (d *DotGit) Object(h plumbing.Hash) (billy.File, error) {
- return d.fs.Open(d.objectPath(h))
+ err := d.hasObject(h)
+ if err != nil {
+ return nil, err
+ }
+
+ obj1, err1 := d.fs.Open(d.objectPath(h))
+ if os.IsNotExist(err1) && d.hasIncomingObjects() {
+ obj2, err2 := d.fs.Open(d.incomingObjectPath(h))
+ if err2 != nil {
+ return obj1, err1
+ }
+ return obj2, err2
+ }
+ return obj1, err1
}
// ObjectStat returns a os.FileInfo pointing the object file, if exists
func (d *DotGit) ObjectStat(h plumbing.Hash) (os.FileInfo, error) {
- return d.fs.Stat(d.objectPath(h))
+ err := d.hasObject(h)
+ if err != nil {
+ return nil, err
+ }
+
+ obj1, err1 := d.fs.Stat(d.objectPath(h))
+ if os.IsNotExist(err1) && d.hasIncomingObjects() {
+ obj2, err2 := d.fs.Stat(d.incomingObjectPath(h))
+ if err2 != nil {
+ return obj1, err1
+ }
+ return obj2, err2
+ }
+ return obj1, err1
}
// ObjectDelete removes the object file, if exists
func (d *DotGit) ObjectDelete(h plumbing.Hash) error {
- return d.fs.Remove(d.objectPath(h))
+ d.cleanObjectList()
+
+ err1 := d.fs.Remove(d.objectPath(h))
+ if os.IsNotExist(err1) && d.hasIncomingObjects() {
+ err2 := d.fs.Remove(d.incomingObjectPath(h))
+ if err2 != nil {
+ return err1
+ }
+ return err2
+ }
+ return err1
}
func (d *DotGit) readReferenceFrom(rd io.Reader, name string) (ref *plumbing.Reference, err error) {
@@ -469,7 +752,7 @@
// File mode is retrieved from a constant defined in the target specific
// files (dotgit_rewrite_packed_refs_*). Some modes are not available
// in all filesystems.
- openFlags := openAndLockPackedRefsMode
+ openFlags := d.openAndLockPackedRefsMode()
if doCreate {
openFlags |= os.O_CREATE
}
@@ -784,6 +1067,11 @@
return alternates, nil
}
+// Fs returns the underlying filesystem of the DotGit folder.
+func (d *DotGit) Fs() billy.Filesystem {
+ return d.fs
+}
+
func isHex(s string) bool {
for _, b := range []byte(s) {
if isNum(b) {
diff --git a/storage/filesystem/dotgit/dotgit_rewrite_packed_refs.go b/storage/filesystem/dotgit/dotgit_rewrite_packed_refs.go
new file mode 100644
index 0000000..7f1c02c
--- /dev/null
+++ b/storage/filesystem/dotgit/dotgit_rewrite_packed_refs.go
@@ -0,0 +1,81 @@
+package dotgit
+
+import (
+ "io"
+ "os"
+ "runtime"
+
+ "gopkg.in/src-d/go-billy.v4"
+ "gopkg.in/src-d/go-git.v4/utils/ioutil"
+)
+
+func (d *DotGit) openAndLockPackedRefsMode() int {
+ if billy.CapabilityCheck(d.fs, billy.ReadAndWriteCapability) {
+ return os.O_RDWR
+ }
+
+ return os.O_RDONLY
+}
+
+func (d *DotGit) rewritePackedRefsWhileLocked(
+ tmp billy.File, pr billy.File) error {
+ // Try plain rename. If we aren't using the bare Windows filesystem as the
+ // storage layer, we might be able to get away with a rename over a locked
+ // file.
+ err := d.fs.Rename(tmp.Name(), pr.Name())
+ if err == nil {
+ return nil
+ }
+
+ // If we are in a filesystem that does not support rename (e.g. sivafs)
+ // a full copy is done.
+ if err == billy.ErrNotSupported {
+ return d.copyNewFile(tmp, pr)
+ }
+
+ if runtime.GOOS != "windows" {
+ return err
+ }
+
+ // Otherwise, Windows doesn't let us rename over a locked file, so
+ // we have to do a straight copy. Unfortunately this could result
+ // in a partially-written file if the process fails before the
+ // copy completes.
+ return d.copyToExistingFile(tmp, pr)
+}
+
+func (d *DotGit) copyToExistingFile(tmp, pr billy.File) error {
+ _, err := pr.Seek(0, io.SeekStart)
+ if err != nil {
+ return err
+ }
+ err = pr.Truncate(0)
+ if err != nil {
+ return err
+ }
+ _, err = tmp.Seek(0, io.SeekStart)
+ if err != nil {
+ return err
+ }
+ _, err = io.Copy(pr, tmp)
+
+ return err
+}
+
+func (d *DotGit) copyNewFile(tmp billy.File, pr billy.File) (err error) {
+ prWrite, err := d.fs.Create(pr.Name())
+ if err != nil {
+ return err
+ }
+
+ defer ioutil.CheckClose(prWrite, &err)
+
+ _, err = tmp.Seek(0, io.SeekStart)
+ if err != nil {
+ return err
+ }
+
+ _, err = io.Copy(prWrite, tmp)
+
+ return err
+}
diff --git a/storage/filesystem/dotgit/dotgit_rewrite_packed_refs_nix.go b/storage/filesystem/dotgit/dotgit_rewrite_packed_refs_nix.go
deleted file mode 100644
index c760793..0000000
--- a/storage/filesystem/dotgit/dotgit_rewrite_packed_refs_nix.go
+++ /dev/null
@@ -1,17 +0,0 @@
-// +build !windows,!norwfs
-
-package dotgit
-
-import (
- "os"
-
- "gopkg.in/src-d/go-billy.v4"
-)
-
-const openAndLockPackedRefsMode = os.O_RDWR
-
-func (d *DotGit) rewritePackedRefsWhileLocked(
- tmp billy.File, pr billy.File) error {
- // On non-Windows platforms, we can have atomic rename.
- return d.fs.Rename(tmp.Name(), pr.Name())
-}
diff --git a/storage/filesystem/dotgit/dotgit_rewrite_packed_refs_norwfs.go b/storage/filesystem/dotgit/dotgit_rewrite_packed_refs_norwfs.go
deleted file mode 100644
index 6e43b42..0000000
--- a/storage/filesystem/dotgit/dotgit_rewrite_packed_refs_norwfs.go
+++ /dev/null
@@ -1,34 +0,0 @@
-// +build norwfs
-
-package dotgit
-
-import (
- "io"
- "os"
-
- "gopkg.in/src-d/go-billy.v4"
-)
-
-const openAndLockPackedRefsMode = os.O_RDONLY
-
-// Instead of renaming that can not be supported in simpler filesystems
-// a full copy is done.
-func (d *DotGit) rewritePackedRefsWhileLocked(
- tmp billy.File, pr billy.File) error {
-
- prWrite, err := d.fs.Create(pr.Name())
- if err != nil {
- return err
- }
-
- defer prWrite.Close()
-
- _, err = tmp.Seek(0, io.SeekStart)
- if err != nil {
- return err
- }
-
- _, err = io.Copy(prWrite, tmp)
-
- return err
-}
diff --git a/storage/filesystem/dotgit/dotgit_rewrite_packed_refs_windows.go b/storage/filesystem/dotgit/dotgit_rewrite_packed_refs_windows.go
deleted file mode 100644
index 897d2c9..0000000
--- a/storage/filesystem/dotgit/dotgit_rewrite_packed_refs_windows.go
+++ /dev/null
@@ -1,42 +0,0 @@
-// +build windows,!norwfs
-
-package dotgit
-
-import (
- "io"
- "os"
-
- "gopkg.in/src-d/go-billy.v4"
-)
-
-const openAndLockPackedRefsMode = os.O_RDWR
-
-func (d *DotGit) rewritePackedRefsWhileLocked(
- tmp billy.File, pr billy.File) error {
- // If we aren't using the bare Windows filesystem as the storage
- // layer, we might be able to get away with a rename over a locked
- // file.
- err := d.fs.Rename(tmp.Name(), pr.Name())
- if err == nil {
- return nil
- }
-
- // Otherwise, Windows doesn't let us rename over a locked file, so
- // we have to do a straight copy. Unfortunately this could result
- // in a partially-written file if the process fails before the
- // copy completes.
- _, err = pr.Seek(0, io.SeekStart)
- if err != nil {
- return err
- }
- err = pr.Truncate(0)
- if err != nil {
- return err
- }
- _, err = tmp.Seek(0, io.SeekStart)
- if err != nil {
- return err
- }
- _, err = io.Copy(pr, tmp)
- return err
-}
diff --git a/storage/filesystem/dotgit/dotgit_test.go b/storage/filesystem/dotgit/dotgit_test.go
index 7733eef..308c6b7 100644
--- a/storage/filesystem/dotgit/dotgit_test.go
+++ b/storage/filesystem/dotgit/dotgit_test.go
@@ -9,6 +9,7 @@
"strings"
"testing"
+ "gopkg.in/src-d/go-billy.v4"
"gopkg.in/src-d/go-git.v4/plumbing"
. "gopkg.in/check.v1"
@@ -424,6 +425,18 @@
fs := f.DotGit()
dir := New(fs)
+ testObjectPacks(c, fs, dir, f)
+}
+
+func (s *SuiteDotGit) TestObjectPacksExclusive(c *C) {
+ f := fixtures.Basic().ByTag(".git").One()
+ fs := f.DotGit()
+ dir := NewWithOptions(fs, Options{ExclusiveAccess: true})
+
+ testObjectPacks(c, fs, dir, f)
+}
+
+func testObjectPacks(c *C, fs billy.Filesystem, dir *DotGit, f *fixtures.Fixture) {
hashes, err := dir.ObjectPacks()
c.Assert(err, IsNil)
c.Assert(hashes, HasLen, 1)
@@ -452,6 +465,45 @@
c.Assert(filepath.Ext(pack.Name()), Equals, ".pack")
}
+func (s *SuiteDotGit) TestObjectPackWithKeepDescriptors(c *C) {
+ f := fixtures.Basic().ByTag(".git").One()
+ fs := f.DotGit()
+ dir := NewWithOptions(fs, Options{KeepDescriptors: true})
+
+ pack, err := dir.ObjectPack(f.PackfileHash)
+ c.Assert(err, IsNil)
+ c.Assert(filepath.Ext(pack.Name()), Equals, ".pack")
+
+ // Move to an specific offset
+ pack.Seek(42, os.SEEK_SET)
+
+ pack2, err := dir.ObjectPack(f.PackfileHash)
+ c.Assert(err, IsNil)
+
+ // If the file is the same the offset should be the same
+ offset, err := pack2.Seek(0, os.SEEK_CUR)
+ c.Assert(err, IsNil)
+ c.Assert(offset, Equals, int64(42))
+
+ err = dir.Close()
+ c.Assert(err, IsNil)
+
+ pack2, err = dir.ObjectPack(f.PackfileHash)
+ c.Assert(err, IsNil)
+
+ // If the file is opened again its offset should be 0
+ offset, err = pack2.Seek(0, os.SEEK_CUR)
+ c.Assert(err, IsNil)
+ c.Assert(offset, Equals, int64(0))
+
+ err = pack2.Close()
+ c.Assert(err, IsNil)
+
+ err = dir.Close()
+ c.Assert(err, NotNil)
+
+}
+
func (s *SuiteDotGit) TestObjectPackIdx(c *C) {
f := fixtures.Basic().ByTag(".git").One()
fs := f.DotGit()
@@ -506,6 +558,17 @@
fs := fixtures.ByTag(".git").ByTag("unpacked").One().DotGit()
dir := New(fs)
+ testObjects(c, fs, dir)
+}
+
+func (s *SuiteDotGit) TestObjectsExclusive(c *C) {
+ fs := fixtures.ByTag(".git").ByTag("unpacked").One().DotGit()
+ dir := NewWithOptions(fs, Options{ExclusiveAccess: true})
+
+ testObjects(c, fs, dir)
+}
+
+func testObjects(c *C, fs billy.Filesystem, dir *DotGit) {
hashes, err := dir.Objects()
c.Assert(err, IsNil)
c.Assert(hashes, HasLen, 187)
@@ -537,6 +600,57 @@
file.Name(), fs.Join("objects", "03", "db8e1fbe133a480f2867aac478fd866686d69e")),
Equals, true,
)
+ incomingHash := "9d25e0f9bde9f82882b49fe29117b9411cb157b7" //made up hash
+ incomingDirPath := fs.Join("objects", "incoming-123456")
+ incomingFilePath := fs.Join(incomingDirPath, incomingHash[0:2], incomingHash[2:40])
+ fs.MkdirAll(incomingDirPath, os.FileMode(0755))
+ fs.Create(incomingFilePath)
+
+ file, err = dir.Object(plumbing.NewHash(incomingHash))
+ c.Assert(err, IsNil)
+}
+
+func (s *SuiteDotGit) TestObjectStat(c *C) {
+ fs := fixtures.ByTag(".git").ByTag("unpacked").One().DotGit()
+ dir := New(fs)
+
+ hash := plumbing.NewHash("03db8e1fbe133a480f2867aac478fd866686d69e")
+ _, err := dir.ObjectStat(hash)
+ c.Assert(err, IsNil)
+ incomingHash := "9d25e0f9bde9f82882b49fe29117b9411cb157b7" //made up hash
+ incomingDirPath := fs.Join("objects", "incoming-123456")
+ incomingFilePath := fs.Join(incomingDirPath, incomingHash[0:2], incomingHash[2:40])
+ fs.MkdirAll(incomingDirPath, os.FileMode(0755))
+ fs.Create(incomingFilePath)
+
+ _, err = dir.ObjectStat(plumbing.NewHash(incomingHash))
+ c.Assert(err, IsNil)
+}
+
+func (s *SuiteDotGit) TestObjectDelete(c *C) {
+ fs := fixtures.ByTag(".git").ByTag("unpacked").One().DotGit()
+ dir := New(fs)
+
+ hash := plumbing.NewHash("03db8e1fbe133a480f2867aac478fd866686d69e")
+ err := dir.ObjectDelete(hash)
+ c.Assert(err, IsNil)
+
+ incomingHash := "9d25e0f9bde9f82882b49fe29117b9411cb157b7" //made up hash
+ incomingDirPath := fs.Join("objects", "incoming-123456")
+ incomingSubDirPath := fs.Join(incomingDirPath, incomingHash[0:2])
+ incomingFilePath := fs.Join(incomingSubDirPath, incomingHash[2:40])
+
+ err = fs.MkdirAll(incomingSubDirPath, os.FileMode(0755))
+ c.Assert(err, IsNil)
+
+ f, err := fs.Create(incomingFilePath)
+ c.Assert(err, IsNil)
+
+ err = f.Close()
+ c.Assert(err, IsNil)
+
+ err = dir.ObjectDelete(plumbing.NewHash(incomingHash))
+ c.Assert(err, IsNil)
}
func (s *SuiteDotGit) TestObjectNotFound(c *C) {
diff --git a/storage/filesystem/dotgit/writers.go b/storage/filesystem/dotgit/writers.go
index c2b420f..93d2d8c 100644
--- a/storage/filesystem/dotgit/writers.go
+++ b/storage/filesystem/dotgit/writers.go
@@ -20,13 +20,14 @@
// is renamed/moved (depends on the Filesystem implementation) to the final
// location, if the PackWriter is not used, nothing is written
type PackWriter struct {
- Notify func(plumbing.Hash, *packfile.Index)
+ Notify func(plumbing.Hash, *idxfile.Writer)
fs billy.Filesystem
fr, fw billy.File
synced *syncedReader
checksum plumbing.Hash
- index *packfile.Index
+ parser *packfile.Parser
+ writer *idxfile.Writer
result chan error
}
@@ -55,20 +56,21 @@
func (w *PackWriter) buildIndex() {
s := packfile.NewScanner(w.synced)
- d, err := packfile.NewDecoder(s, nil)
+ w.writer = new(idxfile.Writer)
+ var err error
+ w.parser, err = packfile.NewParser(s, w.writer)
if err != nil {
w.result <- err
return
}
- checksum, err := d.Decode()
+ checksum, err := w.parser.Parse()
if err != nil {
w.result <- err
return
}
w.checksum = checksum
- w.index = d.Index()
w.result <- err
}
@@ -92,8 +94,8 @@
// was written, the tempfiles are deleted without writing a packfile.
func (w *PackWriter) Close() error {
defer func() {
- if w.Notify != nil && w.index != nil && w.index.Size() > 0 {
- w.Notify(w.checksum, w.index)
+ if w.Notify != nil && w.writer != nil && w.writer.Finished() {
+ w.Notify(w.checksum, w.writer)
}
close(w.result)
@@ -115,7 +117,7 @@
return err
}
- if w.index == nil || w.index.Size() == 0 {
+ if w.writer == nil || !w.writer.Finished() {
return w.clean()
}
@@ -145,11 +147,13 @@
}
func (w *PackWriter) encodeIdx(writer io.Writer) error {
- idx := w.index.ToIdxFile()
- idx.PackfileChecksum = w.checksum
- idx.Version = idxfile.VersionSupported
+ idx, err := w.writer.Index()
+ if err != nil {
+ return err
+ }
+
e := idxfile.NewEncoder(writer)
- _, err := e.Encode(idx)
+ _, err = e.Encode(idx)
return err
}
@@ -209,7 +213,6 @@
func (s *syncedReader) wake() {
if s.isBlocked() {
- // fmt.Println("wake")
atomic.StoreUint32(&s.blocked, 0)
s.news <- true
}
@@ -220,7 +223,6 @@
written := atomic.LoadUint64(&s.written)
if read >= written {
atomic.StoreUint32(&s.blocked, 1)
- // fmt.Println("sleep", read, written)
<-s.news
}
diff --git a/storage/filesystem/dotgit/writers_test.go b/storage/filesystem/dotgit/writers_test.go
index bf00762..5a5f7b4 100644
--- a/storage/filesystem/dotgit/writers_test.go
+++ b/storage/filesystem/dotgit/writers_test.go
@@ -9,6 +9,7 @@
"strconv"
"gopkg.in/src-d/go-git.v4/plumbing"
+ "gopkg.in/src-d/go-git.v4/plumbing/format/idxfile"
"gopkg.in/src-d/go-git.v4/plumbing/format/packfile"
. "gopkg.in/check.v1"
@@ -148,7 +149,7 @@
w, err := newPackWrite(fs)
c.Assert(err, IsNil)
- w.Notify = func(h plumbing.Hash, idx *packfile.Index) {
+ w.Notify = func(h plumbing.Hash, idx *idxfile.Writer) {
c.Fatal("unexpected call to PackWriter.Notify")
}
diff --git a/storage/filesystem/object.go b/storage/filesystem/object.go
index 9ffe4dc..3545e27 100644
--- a/storage/filesystem/object.go
+++ b/storage/filesystem/object.go
@@ -12,23 +12,34 @@
"gopkg.in/src-d/go-git.v4/plumbing/format/packfile"
"gopkg.in/src-d/go-git.v4/plumbing/storer"
"gopkg.in/src-d/go-git.v4/storage/filesystem/dotgit"
- "gopkg.in/src-d/go-git.v4/storage/memory"
"gopkg.in/src-d/go-git.v4/utils/ioutil"
"gopkg.in/src-d/go-billy.v4"
)
type ObjectStorage struct {
+ options Options
+
// deltaBaseCache is an object cache uses to cache delta's bases when
deltaBaseCache cache.Object
dir *dotgit.DotGit
- index map[plumbing.Hash]*packfile.Index
+ index map[plumbing.Hash]idxfile.Index
}
// NewObjectStorage creates a new ObjectStorage with the given .git directory.
func NewObjectStorage(dir *dotgit.DotGit) (ObjectStorage, error) {
+ return NewObjectStorageWithOptions(dir, Options{})
+}
+
+// NewObjectStorageWithOptions creates a new ObjectStorage with the given .git
+// directory and sets its options.
+func NewObjectStorageWithOptions(
+ dir *dotgit.DotGit,
+ ops Options,
+) (ObjectStorage, error) {
s := ObjectStorage{
+ options: ops,
deltaBaseCache: cache.NewObjectLRUDefault(),
dir: dir,
}
@@ -41,7 +52,7 @@
return nil
}
- s.index = make(map[plumbing.Hash]*packfile.Index)
+ s.index = make(map[plumbing.Hash]idxfile.Index)
packs, err := s.dir.ObjectPacks()
if err != nil {
return err
@@ -63,13 +74,14 @@
}
defer ioutil.CheckClose(f, &err)
- idxf := idxfile.NewIdxfile()
+
+ idxf := idxfile.NewMemoryIndex()
d := idxfile.NewDecoder(f)
if err = d.Decode(idxf); err != nil {
return err
}
- s.index[h] = packfile.NewIndexFromIdxFile(idxf)
+ s.index[h] = idxf
return err
}
@@ -87,8 +99,11 @@
return nil, err
}
- w.Notify = func(h plumbing.Hash, idx *packfile.Index) {
- s.index[h] = idx
+ w.Notify = func(h plumbing.Hash, writer *idxfile.Writer) {
+ index, err := writer.Index()
+ if err == nil {
+ s.index[h] = index
+ }
}
return w, nil
@@ -266,7 +281,9 @@
return nil, err
}
- defer ioutil.CheckClose(f, &err)
+ if !s.options.KeepDescriptors {
+ defer ioutil.CheckClose(f, &err)
+ }
idx := s.index[pack]
if canBeDelta {
@@ -278,30 +295,37 @@
func (s *ObjectStorage) decodeObjectAt(
f billy.File,
- idx *packfile.Index,
- offset int64) (plumbing.EncodedObject, error) {
- if _, err := f.Seek(0, io.SeekStart); err != nil {
+ idx idxfile.Index,
+ offset int64,
+) (plumbing.EncodedObject, error) {
+ hash, err := idx.FindHash(offset)
+ if err == nil {
+ obj, ok := s.deltaBaseCache.Get(hash)
+ if ok {
+ return obj, nil
+ }
+ }
+
+ if err != nil && err != plumbing.ErrObjectNotFound {
return nil, err
}
- p := packfile.NewScanner(f)
-
- d, err := packfile.NewDecoderWithCache(p, memory.NewStorage(),
- s.deltaBaseCache)
- if err != nil {
- return nil, err
+ var p *packfile.Packfile
+ if s.deltaBaseCache != nil {
+ p = packfile.NewPackfileWithCache(idx, s.dir.Fs(), f, s.deltaBaseCache)
+ } else {
+ p = packfile.NewPackfile(idx, s.dir.Fs(), f)
}
- d.SetIndex(idx)
- obj, err := d.DecodeObjectAt(offset)
- return obj, err
+ return p.GetByOffset(offset)
}
func (s *ObjectStorage) decodeDeltaObjectAt(
f billy.File,
- idx *packfile.Index,
+ idx idxfile.Index,
offset int64,
- hash plumbing.Hash) (plumbing.EncodedObject, error) {
+ hash plumbing.Hash,
+) (plumbing.EncodedObject, error) {
if _, err := f.Seek(0, io.SeekStart); err != nil {
return nil, err
}
@@ -324,12 +348,10 @@
case plumbing.REFDeltaObject:
base = header.Reference
case plumbing.OFSDeltaObject:
- e, ok := idx.LookupOffset(uint64(header.OffsetReference))
- if !ok {
- return nil, plumbing.ErrObjectNotFound
+ base, err = idx.FindHash(header.OffsetReference)
+ if err != nil {
+ return nil, err
}
-
- base = e.Hash
default:
return s.decodeObjectAt(f, idx, offset)
}
@@ -350,8 +372,9 @@
func (s *ObjectStorage) findObjectInPackfile(h plumbing.Hash) (plumbing.Hash, plumbing.Hash, int64) {
for packfile, index := range s.index {
- if e, ok := index.LookupHash(h); ok {
- return packfile, e.Hash, int64(e.Offset)
+ offset, err := index.FindOffset(h)
+ if err == nil {
+ return packfile, h, offset
}
}
@@ -398,11 +421,16 @@
if err != nil {
return nil, err
}
- return newPackfileIter(pack, t, seen, s.index[h], s.deltaBaseCache)
+ return newPackfileIter(s.dir.Fs(), pack, t, seen, s.index[h], s.deltaBaseCache)
},
}, nil
}
+// Close closes all opened files.
+func (s *ObjectStorage) Close() error {
+ return s.dir.Close()
+}
+
type lazyPackfilesIter struct {
hashes []plumbing.Hash
open func(h plumbing.Hash) (storer.EncodedObjectIter, error)
@@ -451,76 +479,94 @@
}
type packfileIter struct {
- f billy.File
- d *packfile.Decoder
- t plumbing.ObjectType
-
- seen map[plumbing.Hash]struct{}
- position uint32
- total uint32
+ pack billy.File
+ iter storer.EncodedObjectIter
+ seen map[plumbing.Hash]struct{}
}
-func NewPackfileIter(f billy.File, t plumbing.ObjectType) (storer.EncodedObjectIter, error) {
- return newPackfileIter(f, t, make(map[plumbing.Hash]struct{}), nil, nil)
-}
-
-func newPackfileIter(f billy.File, t plumbing.ObjectType, seen map[plumbing.Hash]struct{},
- index *packfile.Index, cache cache.Object) (storer.EncodedObjectIter, error) {
- s := packfile.NewScanner(f)
- _, total, err := s.Header()
- if err != nil {
+// NewPackfileIter returns a new EncodedObjectIter for the provided packfile
+// and object type. Packfile and index file will be closed after they're
+// used.
+func NewPackfileIter(
+ fs billy.Filesystem,
+ f billy.File,
+ idxFile billy.File,
+ t plumbing.ObjectType,
+) (storer.EncodedObjectIter, error) {
+ idx := idxfile.NewMemoryIndex()
+ if err := idxfile.NewDecoder(idxFile).Decode(idx); err != nil {
return nil, err
}
- d, err := packfile.NewDecoderForType(s, memory.NewStorage(), t, cache)
- if err != nil {
+ if err := idxFile.Close(); err != nil {
return nil, err
}
- d.SetIndex(index)
+ return newPackfileIter(fs, f, t, make(map[plumbing.Hash]struct{}), idx, nil)
+}
+
+func newPackfileIter(
+ fs billy.Filesystem,
+ f billy.File,
+ t plumbing.ObjectType,
+ seen map[plumbing.Hash]struct{},
+ index idxfile.Index,
+ cache cache.Object,
+) (storer.EncodedObjectIter, error) {
+ var p *packfile.Packfile
+ if cache != nil {
+ p = packfile.NewPackfileWithCache(index, fs, f, cache)
+ } else {
+ p = packfile.NewPackfile(index, fs, f)
+ }
+
+ iter, err := p.GetByType(t)
+ if err != nil {
+ return nil, err
+ }
return &packfileIter{
- f: f,
- d: d,
- t: t,
-
- total: total,
- seen: seen,
+ pack: f,
+ iter: iter,
+ seen: seen,
}, nil
}
func (iter *packfileIter) Next() (plumbing.EncodedObject, error) {
for {
- if iter.position >= iter.total {
- return nil, io.EOF
- }
-
- obj, err := iter.d.DecodeObject()
+ obj, err := iter.iter.Next()
if err != nil {
return nil, err
}
- iter.position++
- if obj == nil {
- continue
- }
-
if _, ok := iter.seen[obj.Hash()]; ok {
- return iter.Next()
+ continue
}
return obj, nil
}
}
-// ForEach is never called since is used inside of a MultiObjectIterator
func (iter *packfileIter) ForEach(cb func(plumbing.EncodedObject) error) error {
- return nil
+ for {
+ o, err := iter.Next()
+ if err != nil {
+ if err == io.EOF {
+ iter.Close()
+ return nil
+ }
+ return err
+ }
+
+ if err := cb(o); err != nil {
+ return err
+ }
+ }
}
func (iter *packfileIter) Close() {
- iter.f.Close()
- iter.d.Close()
+ iter.iter.Close()
+ _ = iter.pack.Close()
}
type objectsIter struct {
@@ -548,9 +594,20 @@
return obj, err
}
-// ForEach is never called since is used inside of a MultiObjectIterator
func (iter *objectsIter) ForEach(cb func(plumbing.EncodedObject) error) error {
- return nil
+ for {
+ o, err := iter.Next()
+ if err != nil {
+ if err == io.EOF {
+ return nil
+ }
+ return err
+ }
+
+ if err := cb(o); err != nil {
+ return err
+ }
+ }
}
func (iter *objectsIter) Close() {
diff --git a/storage/filesystem/object_test.go b/storage/filesystem/object_test.go
index ecd6beb..4a921a9 100644
--- a/storage/filesystem/object_test.go
+++ b/storage/filesystem/object_test.go
@@ -1,6 +1,10 @@
package filesystem
import (
+ "io/ioutil"
+ "os"
+ "testing"
+
"gopkg.in/src-d/go-git.v4/plumbing"
"gopkg.in/src-d/go-git.v4/storage/filesystem/dotgit"
@@ -10,17 +14,16 @@
type FsSuite struct {
fixtures.Suite
- Types []plumbing.ObjectType
}
-var _ = Suite(&FsSuite{
- Types: []plumbing.ObjectType{
- plumbing.CommitObject,
- plumbing.TagObject,
- plumbing.TreeObject,
- plumbing.BlobObject,
- },
-})
+var objectTypes = []plumbing.ObjectType{
+ plumbing.CommitObject,
+ plumbing.TagObject,
+ plumbing.TreeObject,
+ plumbing.BlobObject,
+}
+
+var _ = Suite(&FsSuite{})
func (s *FsSuite) TestGetFromObjectFile(c *C) {
fs := fixtures.ByTag(".git").ByTag("unpacked").One().DotGit()
@@ -46,6 +49,42 @@
})
}
+func (s *FsSuite) TestGetFromPackfileKeepDescriptors(c *C) {
+ fixtures.Basic().ByTag(".git").Test(c, func(f *fixtures.Fixture) {
+ fs := f.DotGit()
+ dg := dotgit.NewWithOptions(fs, dotgit.Options{KeepDescriptors: true})
+ o, err := NewObjectStorageWithOptions(dg, Options{KeepDescriptors: true})
+ c.Assert(err, IsNil)
+
+ expected := plumbing.NewHash("6ecf0ef2c2dffb796033e5a02219af86ec6584e5")
+ obj, err := o.EncodedObject(plumbing.AnyObject, expected)
+ c.Assert(err, IsNil)
+ c.Assert(obj.Hash(), Equals, expected)
+
+ packfiles, err := dg.ObjectPacks()
+ c.Assert(err, IsNil)
+
+ pack1, err := dg.ObjectPack(packfiles[0])
+ c.Assert(err, IsNil)
+
+ pack1.Seek(42, os.SEEK_SET)
+
+ err = o.Close()
+ c.Assert(err, IsNil)
+
+ pack2, err := dg.ObjectPack(packfiles[0])
+ c.Assert(err, IsNil)
+
+ offset, err := pack2.Seek(0, os.SEEK_CUR)
+ c.Assert(err, IsNil)
+ c.Assert(offset, Equals, int64(0))
+
+ err = o.Close()
+ c.Assert(err, IsNil)
+
+ })
+}
+
func (s *FsSuite) TestGetFromPackfileMultiplePackfiles(c *C) {
fs := fixtures.ByTag(".git").ByTag("multi-packfile").One().DotGit()
o, err := NewObjectStorage(dotgit.New(fs))
@@ -84,7 +123,7 @@
func (s *FsSuite) TestIterWithType(c *C) {
fixtures.ByTag(".git").Test(c, func(f *fixtures.Fixture) {
- for _, t := range s.Types {
+ for _, t := range objectTypes {
fs := f.DotGit()
o, err := NewObjectStorage(dotgit.New(fs))
c.Assert(err, IsNil)
@@ -108,14 +147,18 @@
fs := f.DotGit()
dg := dotgit.New(fs)
- for _, t := range s.Types {
+ for _, t := range objectTypes {
ph, err := dg.ObjectPacks()
c.Assert(err, IsNil)
for _, h := range ph {
f, err := dg.ObjectPack(h)
c.Assert(err, IsNil)
- iter, err := NewPackfileIter(f, t)
+
+ idxf, err := dg.ObjectPackIdx(h)
+ c.Assert(err, IsNil)
+
+ iter, err := NewPackfileIter(fs, f, idxf, t)
c.Assert(err, IsNil)
err = iter.ForEach(func(o plumbing.EncodedObject) error {
c.Assert(o.Type(), Equals, t)
@@ -128,3 +171,159 @@
})
}
+
+func BenchmarkPackfileIter(b *testing.B) {
+ if err := fixtures.Init(); err != nil {
+ b.Fatal(err)
+ }
+
+ defer func() {
+ if err := fixtures.Clean(); err != nil {
+ b.Fatal(err)
+ }
+ }()
+
+ for _, f := range fixtures.ByTag(".git") {
+ b.Run(f.URL, func(b *testing.B) {
+ fs := f.DotGit()
+ dg := dotgit.New(fs)
+
+ for i := 0; i < b.N; i++ {
+ for _, t := range objectTypes {
+ ph, err := dg.ObjectPacks()
+ if err != nil {
+ b.Fatal(err)
+ }
+
+ for _, h := range ph {
+ f, err := dg.ObjectPack(h)
+ if err != nil {
+ b.Fatal(err)
+ }
+
+ idxf, err := dg.ObjectPackIdx(h)
+ if err != nil {
+ b.Fatal(err)
+ }
+
+ iter, err := NewPackfileIter(fs, f, idxf, t)
+ if err != nil {
+ b.Fatal(err)
+ }
+
+ err = iter.ForEach(func(o plumbing.EncodedObject) error {
+ if o.Type() != t {
+ b.Errorf("expecting %s, got %s", t, o.Type())
+ }
+ return nil
+ })
+
+ if err != nil {
+ b.Fatal(err)
+ }
+ }
+ }
+ }
+ })
+ }
+}
+
+func BenchmarkPackfileIterReadContent(b *testing.B) {
+ if err := fixtures.Init(); err != nil {
+ b.Fatal(err)
+ }
+
+ defer func() {
+ if err := fixtures.Clean(); err != nil {
+ b.Fatal(err)
+ }
+ }()
+
+ for _, f := range fixtures.ByTag(".git") {
+ b.Run(f.URL, func(b *testing.B) {
+ fs := f.DotGit()
+ dg := dotgit.New(fs)
+
+ for i := 0; i < b.N; i++ {
+ for _, t := range objectTypes {
+ ph, err := dg.ObjectPacks()
+ if err != nil {
+ b.Fatal(err)
+ }
+
+ for _, h := range ph {
+ f, err := dg.ObjectPack(h)
+ if err != nil {
+ b.Fatal(err)
+ }
+
+ idxf, err := dg.ObjectPackIdx(h)
+ if err != nil {
+ b.Fatal(err)
+ }
+
+ iter, err := NewPackfileIter(fs, f, idxf, t)
+ if err != nil {
+ b.Fatal(err)
+ }
+
+ err = iter.ForEach(func(o plumbing.EncodedObject) error {
+ if o.Type() != t {
+ b.Errorf("expecting %s, got %s", t, o.Type())
+ }
+
+ r, err := o.Reader()
+ if err != nil {
+ b.Fatal(err)
+ }
+
+ if _, err := ioutil.ReadAll(r); err != nil {
+ b.Fatal(err)
+ }
+
+ return r.Close()
+ })
+
+ if err != nil {
+ b.Fatal(err)
+ }
+ }
+ }
+ }
+ })
+ }
+}
+
+func BenchmarkGetObjectFromPackfile(b *testing.B) {
+ if err := fixtures.Init(); err != nil {
+ b.Fatal(err)
+ }
+
+ defer func() {
+ if err := fixtures.Clean(); err != nil {
+ b.Fatal(err)
+ }
+ }()
+
+ for _, f := range fixtures.Basic() {
+ b.Run(f.URL, func(b *testing.B) {
+ fs := f.DotGit()
+ o, err := NewObjectStorage(dotgit.New(fs))
+ if err != nil {
+ b.Fatal(err)
+ }
+
+ for i := 0; i < b.N; i++ {
+ expected := plumbing.NewHash("6ecf0ef2c2dffb796033e5a02219af86ec6584e5")
+ obj, err := o.EncodedObject(plumbing.AnyObject, expected)
+ if err != nil {
+ b.Fatal(err)
+ }
+
+ if obj.Hash() != expected {
+ b.Errorf("expecting %s, got %s", expected, obj.Hash())
+ }
+ }
+ })
+ }
+}
diff --git a/storage/filesystem/storage.go b/storage/filesystem/storage.go
index 622bb4a..7fae789 100644
--- a/storage/filesystem/storage.go
+++ b/storage/filesystem/storage.go
@@ -22,10 +22,33 @@
ModuleStorage
}
+// Options holds configuration for the storage.
+type Options struct {
+ // ExclusiveAccess means that the filesystem is not modified externally
+ // while the repo is open.
+ ExclusiveAccess bool
+ // KeepDescriptors makes the file descriptors to be reused but they will
+ // need to be manually closed calling Close().
+ KeepDescriptors bool
+}
+
// NewStorage returns a new Storage backed by a given `fs.Filesystem`
func NewStorage(fs billy.Filesystem) (*Storage, error) {
- dir := dotgit.New(fs)
- o, err := NewObjectStorage(dir)
+ return NewStorageWithOptions(fs, Options{})
+}
+
+// NewStorageWithOptions returns a new Storage backed by a given `fs.Filesystem`
+func NewStorageWithOptions(
+ fs billy.Filesystem,
+ ops Options,
+) (*Storage, error) {
+ dirOps := dotgit.Options{
+ ExclusiveAccess: ops.ExclusiveAccess,
+ KeepDescriptors: ops.KeepDescriptors,
+ }
+
+ dir := dotgit.NewWithOptions(fs, dirOps)
+ o, err := NewObjectStorageWithOptions(dir, ops)
if err != nil {
return nil, err
}
diff --git a/storage/filesystem/storage_test.go b/storage/filesystem/storage_test.go
index 4d9ba6f..7f85ef5 100644
--- a/storage/filesystem/storage_test.go
+++ b/storage/filesystem/storage_test.go
@@ -26,6 +26,10 @@
storage, err := NewStorage(osfs.New(s.dir))
c.Assert(err, IsNil)
+ setUpTest(s, c, storage)
+}
+
+func setUpTest(s *StorageSuite, c *C, storage *Storage) {
// ensure that right interfaces are implemented
var _ storer.EncodedObjectStorer = storage
var _ storer.IndexStorer = storage
@@ -51,3 +55,19 @@
c.Assert(err, IsNil)
c.Assert(fis, HasLen, 0)
}
+
+type StorageExclusiveSuite struct {
+ StorageSuite
+}
+
+var _ = Suite(&StorageExclusiveSuite{})
+
+func (s *StorageExclusiveSuite) SetUpTest(c *C) {
+ s.dir = c.MkDir()
+ storage, err := NewStorageWithOptions(
+ osfs.New(s.dir),
+ Options{ExclusiveAccess: true})
+ c.Assert(err, IsNil)
+
+ setUpTest(&s.StorageSuite, c, storage)
+}
diff --git a/utils/diff/diff.go b/utils/diff/diff.go
index b840ad6..f49ae55 100644
--- a/utils/diff/diff.go
+++ b/utils/diff/diff.go
@@ -16,8 +16,8 @@
// string into the dst string.
func Do(src, dst string) (diffs []diffmatchpatch.Diff) {
dmp := diffmatchpatch.New()
- wSrc, wDst, warray := dmp.DiffLinesToChars(src, dst)
- diffs = dmp.DiffMain(wSrc, wDst, false)
+ wSrc, wDst, warray := dmp.DiffLinesToRunes(src, dst)
+ diffs = dmp.DiffMainRunes(wSrc, wDst, false)
diffs = dmp.DiffCharsToLines(diffs, warray)
return diffs
}
diff --git a/utils/merkletrie/difftree.go b/utils/merkletrie/difftree.go
index 2294096..d57ed13 100644
--- a/utils/merkletrie/difftree.go
+++ b/utils/merkletrie/difftree.go
@@ -248,15 +248,30 @@
// h: else of i
import (
+ "context"
+ "errors"
"fmt"
"gopkg.in/src-d/go-git.v4/utils/merkletrie/noder"
)
+var (
+ ErrCanceled = errors.New("operation canceled")
+)
+
// DiffTree calculates the list of changes between two merkletries. It
// uses the provided hashEqual callback to compare noders.
func DiffTree(fromTree, toTree noder.Noder,
hashEqual noder.Equal) (Changes, error) {
+ return DiffTreeContext(context.Background(), fromTree, toTree, hashEqual)
+}
+
+// DiffTree calculates the list of changes between two merkletries. It
+// uses the provided hashEqual callback to compare noders.
+// Error will be returned if context expires
+// Provided context must be non nil
+func DiffTreeContext(ctx context.Context, fromTree, toTree noder.Noder,
+ hashEqual noder.Equal) (Changes, error) {
ret := NewChanges()
ii, err := newDoubleIter(fromTree, toTree, hashEqual)
@@ -265,6 +280,12 @@
}
for {
+ select {
+ case <-ctx.Done():
+ return nil, ErrCanceled
+ default:
+ }
+
from := ii.from.current
to := ii.to.current
diff --git a/utils/merkletrie/difftree_test.go b/utils/merkletrie/difftree_test.go
index 9f033b1..ab0eb57 100644
--- a/utils/merkletrie/difftree_test.go
+++ b/utils/merkletrie/difftree_test.go
@@ -2,6 +2,7 @@
import (
"bytes"
+ ctx "context"
"fmt"
"reflect"
"sort"
@@ -61,9 +62,45 @@
c.Assert(obtained, changesEquals, expected, comment)
}
+func (t diffTreeTest) innerRunCtx(c *C, context string, reverse bool) {
+ comment := Commentf("\n%s", context)
+ if reverse {
+ comment = Commentf("%s [REVERSED]", comment.CheckCommentString())
+ }
+
+ a, err := fsnoder.New(t.from)
+ c.Assert(err, IsNil, comment)
+ comment = Commentf("%s\n\t from = %s", comment.CheckCommentString(), a)
+
+ b, err := fsnoder.New(t.to)
+ c.Assert(err, IsNil, comment)
+ comment = Commentf("%s\n\t to = %s", comment.CheckCommentString(), b)
+
+ expected, err := newChangesFromString(t.expected)
+ c.Assert(err, IsNil, comment)
+
+ if reverse {
+ a, b = b, a
+ expected = expected.reverse()
+ }
+ comment = Commentf("%s\n\texpected = %s", comment.CheckCommentString(), expected)
+
+ results, err := merkletrie.DiffTreeContext(ctx.Background(), a, b, fsnoder.HashEqual)
+ c.Assert(err, IsNil, comment)
+
+ obtained, err := newChanges(results)
+ c.Assert(err, IsNil, comment)
+
+ comment = Commentf("%s\n\tobtained = %s", comment.CheckCommentString(), obtained)
+
+ c.Assert(obtained, changesEquals, expected, comment)
+}
+
func (t diffTreeTest) run(c *C, context string) {
t.innerRun(c, context, false)
t.innerRun(c, context, true)
+ t.innerRunCtx(c, context, false)
+ t.innerRunCtx(c, context, true)
}
type change struct {
@@ -437,3 +474,27 @@
},
})
}
+
+func (s *DiffTreeSuite) TestCancel(c *C) {
+ t := diffTreeTest{"()", "(a<> b<1> c() d<> e<2> f())", "+a +b +d +e"}
+ comment := Commentf("\n%s", "test cancel:")
+
+ a, err := fsnoder.New(t.from)
+ c.Assert(err, IsNil, comment)
+ comment = Commentf("%s\n\t from = %s", comment.CheckCommentString(), a)
+
+ b, err := fsnoder.New(t.to)
+ c.Assert(err, IsNil, comment)
+ comment = Commentf("%s\n\t to = %s", comment.CheckCommentString(), b)
+
+ expected, err := newChangesFromString(t.expected)
+ c.Assert(err, IsNil, comment)
+
+ comment = Commentf("%s\n\texpected = %s", comment.CheckCommentString(), expected)
+ context, cancel := ctx.WithCancel(ctx.Background())
+ cancel()
+ results, err := merkletrie.DiffTreeContext(context, a, b, fsnoder.HashEqual)
+ c.Assert(results, IsNil, comment)
+ c.Assert(err, ErrorMatches, "operation canceled")
+
+}
diff --git a/worktree.go b/worktree.go
index 99b2cd1..e45d815 100644
--- a/worktree.go
+++ b/worktree.go
@@ -713,29 +713,54 @@
}
// Clean the worktree by removing untracked files.
+// An empty dir could be removed - this is what `git clean -f -d .` does.
func (w *Worktree) Clean(opts *CleanOptions) error {
s, err := w.Status()
if err != nil {
return err
}
- // Check Worktree status to be Untracked, obtain absolute path and delete.
- for relativePath, status := range s {
- // Check if the path contains a directory and if Dir options is false,
- // skip the path.
- if relativePath != filepath.Base(relativePath) && !opts.Dir {
+ root := ""
+ files, err := w.Filesystem.ReadDir(root)
+ if err != nil {
+ return err
+ }
+ return w.doClean(s, opts, root, files)
+}
+
+func (w *Worktree) doClean(status Status, opts *CleanOptions, dir string, files []os.FileInfo) error {
+ for _, fi := range files {
+ if fi.Name() == ".git" {
continue
}
- // Remove the file only if it's an untracked file.
- if status.Worktree == Untracked {
- absPath := filepath.Join(w.Filesystem.Root(), relativePath)
- if err := os.Remove(absPath); err != nil {
+ // relative path under the root
+ path := filepath.Join(dir, fi.Name())
+ if fi.IsDir() {
+ if !opts.Dir {
+ continue
+ }
+
+ subfiles, err := w.Filesystem.ReadDir(path)
+ if err != nil {
return err
}
+ err = w.doClean(status, opts, path, subfiles)
+ if err != nil {
+ return err
+ }
+ } else {
+ if status.IsUntracked(path) {
+ if err := w.Filesystem.Remove(path); err != nil {
+ return err
+ }
+ }
}
}
+ if opts.Dir {
+ return doCleanDirectories(w.Filesystem, dir)
+ }
return nil
}
@@ -881,15 +906,18 @@
return err
}
- path := filepath.Dir(name)
- files, err := fs.ReadDir(path)
+ dir := filepath.Dir(name)
+ return doCleanDirectories(fs, dir)
+}
+
+// doCleanDirectories removes empty subdirs (without files)
+func doCleanDirectories(fs billy.Filesystem, dir string) error {
+ files, err := fs.ReadDir(dir)
if err != nil {
return err
}
-
if len(files) == 0 {
- fs.Remove(path)
+ return fs.Remove(dir)
}
-
return nil
}
diff --git a/worktree_commit.go b/worktree_commit.go
index f0e0b42..673eb16 100644
--- a/worktree_commit.go
+++ b/worktree_commit.go
@@ -1,10 +1,12 @@
package git
import (
+ "bytes"
"path"
"sort"
"strings"
+ "golang.org/x/crypto/openpgp"
"gopkg.in/src-d/go-git.v4/plumbing"
"gopkg.in/src-d/go-git.v4/plumbing/filemode"
"gopkg.in/src-d/go-git.v4/plumbing/format/index"
@@ -93,6 +95,14 @@
ParentHashes: opts.Parents,
}
+ if opts.SignKey != nil {
+ sig, err := w.buildCommitSignature(commit, opts.SignKey)
+ if err != nil {
+ return plumbing.ZeroHash, err
+ }
+ commit.PGPSignature = sig
+ }
+
obj := w.r.Storer.NewEncodedObject()
if err := commit.Encode(obj); err != nil {
return plumbing.ZeroHash, err
@@ -100,6 +110,22 @@
return w.r.Storer.SetEncodedObject(obj)
}
+func (w *Worktree) buildCommitSignature(commit *object.Commit, signKey *openpgp.Entity) (string, error) {
+ encoded := &plumbing.MemoryObject{}
+ if err := commit.Encode(encoded); err != nil {
+ return "", err
+ }
+ r, err := encoded.Reader()
+ if err != nil {
+ return "", err
+ }
+ var b bytes.Buffer
+ if err := openpgp.ArmoredDetachSign(&b, signKey, r, nil); err != nil {
+ return "", err
+ }
+ return b.String(), nil
+}
+
// buildTreeHelper converts a given index.Index file into multiple git objects
// reading the blobs from the given filesystem and creating the trees from the
// index structure. The created objects are pushed to a given Storer.
diff --git a/worktree_commit_test.go b/worktree_commit_test.go
index 5ca9b51..6979bd5 100644
--- a/worktree_commit_test.go
+++ b/worktree_commit_test.go
@@ -5,14 +5,18 @@
"io/ioutil"
"os"
"os/exec"
+ "strings"
"time"
"gopkg.in/src-d/go-git.v4/plumbing"
"gopkg.in/src-d/go-git.v4/plumbing/object"
"gopkg.in/src-d/go-git.v4/plumbing/storer"
- "gopkg.in/src-d/go-git.v4/storage/memory"
"gopkg.in/src-d/go-git.v4/storage/filesystem"
+ "gopkg.in/src-d/go-git.v4/storage/memory"
+ "golang.org/x/crypto/openpgp"
+ "golang.org/x/crypto/openpgp/armor"
+ "golang.org/x/crypto/openpgp/errors"
. "gopkg.in/check.v1"
"gopkg.in/src-d/go-billy.v4/memfs"
"gopkg.in/src-d/go-billy.v4/osfs"
@@ -141,6 +145,62 @@
assertStorageStatus(c, s.Repository, 13, 11, 11, expected)
}
+func (s *WorktreeSuite) TestCommitSign(c *C) {
+ fs := memfs.New()
+ storage := memory.NewStorage()
+
+ r, err := Init(storage, fs)
+ c.Assert(err, IsNil)
+
+ w, err := r.Worktree()
+ c.Assert(err, IsNil)
+
+ util.WriteFile(fs, "foo", []byte("foo"), 0644)
+
+ _, err = w.Add("foo")
+ c.Assert(err, IsNil)
+
+ key := commitSignKey(c, true)
+ hash, err := w.Commit("foo\n", &CommitOptions{Author: defaultSignature(), SignKey: key})
+ c.Assert(err, IsNil)
+
+ // Verify the commit.
+ pks := new(bytes.Buffer)
+ pkw, err := armor.Encode(pks, openpgp.PublicKeyType, nil)
+ c.Assert(err, IsNil)
+
+ err = key.Serialize(pkw)
+ c.Assert(err, IsNil)
+ err = pkw.Close()
+ c.Assert(err, IsNil)
+
+ expectedCommit, err := r.CommitObject(hash)
+ c.Assert(err, IsNil)
+ actual, err := expectedCommit.Verify(pks.String())
+ c.Assert(err, IsNil)
+ c.Assert(actual.PrimaryKey, DeepEquals, key.PrimaryKey)
+}
+
+func (s *WorktreeSuite) TestCommitSignBadKey(c *C) {
+ fs := memfs.New()
+ storage := memory.NewStorage()
+
+ r, err := Init(storage, fs)
+ c.Assert(err, IsNil)
+
+ w, err := r.Worktree()
+ c.Assert(err, IsNil)
+
+ util.WriteFile(fs, "foo", []byte("foo"), 0644)
+
+ _, err = w.Add("foo")
+ c.Assert(err, IsNil)
+
+ key := commitSignKey(c, false)
+ _, err = w.Commit("foo\n", &CommitOptions{Author: defaultSignature(), SignKey: key})
+ c.Assert(err, Equals, errors.InvalidArgumentError("signing key is encrypted"))
+}
+
func (s *WorktreeSuite) TestCommitTreeSort(c *C) {
path, err := ioutil.TempDir(os.TempDir(), "test-commit-tree-sort")
c.Assert(err, IsNil)
@@ -227,3 +287,83 @@
When: when,
}
}
+
+func commitSignKey(c *C, decrypt bool) *openpgp.Entity {
+ s := strings.NewReader(armoredKeyRing)
+ es, err := openpgp.ReadArmoredKeyRing(s)
+ c.Assert(err, IsNil)
+
+ c.Assert(es, HasLen, 1)
+ c.Assert(es[0].Identities, HasLen, 1)
+ _, ok := es[0].Identities["foo bar <foo@foo.foo>"]
+ c.Assert(ok, Equals, true)
+
+ key := es[0]
+ if decrypt {
+ err = key.PrivateKey.Decrypt([]byte(keyPassphrase))
+ c.Assert(err, IsNil)
+ }
+
+ return key
+}
+
+const armoredKeyRing = `
+-----BEGIN PGP PRIVATE KEY BLOCK-----
+
+lQdGBFt2OHgBEADQpRmFm9X9xBfUljVs1B24MXWRHcEP5tx2k6Cp90sSz/ZOJcxH
+RjzYuXjpkE7g/PaZxAMVS1PptJip/w1/+5l2gZ7RmzU/e3hKe4vALHzKMVp8t7Ta
+0e2K3STxapCr9FNITjQRGOhnFwqiYoPCf9u5Iy8uszDH7HHnBZx+Nvbl95dDvmMs
+aFUKMeaoFD19iwEdRu6gJo7YIWF/8zwHi49neKigisGKh5PI0KUYeRPydXeCZIKQ
+ofdk+CPUS4r3dVhxTMYeHn/Vrep3blEA45E7KJ+TESmKkwliEgdjJwaVkUfJhBkb
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+3dgsVJm67xUSs0qY5ipKzButCFSKnaj1hLNR1NsUd0NPrVBTGblxULLuD99GhoXk
+/pcM5dCGTUX7XIarSFTEgBNQytpmfgt1Xbw2ErmlAdiFb4/5uBdbsVFAjglBvRI5
+VhFXr7mUd+XR/23aRczdAnp+Zg7VvyaJQi0ZwEj7VvLzpSAneVrxEcnuc2MBkUgT
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+aj4CTyUP/2+4k4hXkkBrEeD0yDpmR/FrAgCOZ3iRWca9bJwKtV0hW0HSztlPEfng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+=8g3t
+-----END PGP PRIVATE KEY BLOCK-----
+`
+
+const keyPassphrase = "abcdef0123456789"
diff --git a/worktree_test.go b/worktree_test.go
index df191b0..c714011 100644
--- a/worktree_test.go
+++ b/worktree_test.go
@@ -1591,6 +1591,10 @@
c.Assert(len(status), Equals, 1)
+ fi, err := fs.Lstat("pkgA")
+ c.Assert(err, IsNil)
+ c.Assert(fi.IsDir(), Equals, true)
+
// Clean with Dir: true.
err = wt.Clean(&CleanOptions{Dir: true})
c.Assert(err, IsNil)
@@ -1599,6 +1603,11 @@
c.Assert(err, IsNil)
c.Assert(len(status), Equals, 0)
+
+ // An empty dir should be deleted, as well.
+ _, err = fs.Lstat("pkgA")
+ c.Assert(err, ErrorMatches, ".*(no such file or directory.*|.*file does not exist)*.")
+
}
func (s *WorktreeSuite) TestAlternatesRepo(c *C) {
