Exclude vendor dirs from git CRLF normalization (#10911)
* Exclude vendor dirs from git CRLF normalization Should get rid of a few warnings like at the end of `lint-backend` like https://drone.gitea.io/go-gitea/gitea/23117/1/4 * make vendor Co-authored-by: John Olheiser <john.olheiser@gmail.com> Co-authored-by: guillep2k <18600385+guillep2k@users.noreply.github.com>
This commit is contained in:
silverwind
GitHub
parent
8d99ee2773
commit
848502d04c
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@ -1,4 +1,7 @@
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* text=auto eol=lf
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/vendor/** -text -eol
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/public/vendor/** -text -eol
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conf/* linguist-vendored
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docker/* linguist-vendored
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options/* linguist-vendored
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@ -1,35 +1,35 @@
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package commitgraph
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import (
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"time"
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"github.com/go-git/go-git/v5/plumbing"
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)
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// CommitData is a reduced representation of Commit as presented in the commit graph
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// file. It is merely useful as an optimization for walking the commit graphs.
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type CommitData struct {
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// TreeHash is the hash of the root tree of the commit.
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TreeHash plumbing.Hash
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// ParentIndexes are the indexes of the parent commits of the commit.
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ParentIndexes []int
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// ParentHashes are the hashes of the parent commits of the commit.
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ParentHashes []plumbing.Hash
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// Generation number is the pre-computed generation in the commit graph
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// or zero if not available
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Generation int
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// When is the timestamp of the commit.
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When time.Time
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}
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// Index represents a representation of commit graph that allows indexed
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// access to the nodes using commit object hash
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type Index interface {
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// GetIndexByHash gets the index in the commit graph from commit hash, if available
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GetIndexByHash(h plumbing.Hash) (int, error)
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// GetNodeByIndex gets the commit node from the commit graph using index
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// obtained from child node, if available
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GetCommitDataByIndex(i int) (*CommitData, error)
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// Hashes returns all the hashes that are available in the index
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Hashes() []plumbing.Hash
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}
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package commitgraph
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import (
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"time"
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"github.com/go-git/go-git/v5/plumbing"
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)
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// CommitData is a reduced representation of Commit as presented in the commit graph
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// file. It is merely useful as an optimization for walking the commit graphs.
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type CommitData struct {
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// TreeHash is the hash of the root tree of the commit.
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TreeHash plumbing.Hash
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// ParentIndexes are the indexes of the parent commits of the commit.
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ParentIndexes []int
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// ParentHashes are the hashes of the parent commits of the commit.
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ParentHashes []plumbing.Hash
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// Generation number is the pre-computed generation in the commit graph
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// or zero if not available
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Generation int
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// When is the timestamp of the commit.
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When time.Time
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}
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// Index represents a representation of commit graph that allows indexed
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// access to the nodes using commit object hash
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type Index interface {
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// GetIndexByHash gets the index in the commit graph from commit hash, if available
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GetIndexByHash(h plumbing.Hash) (int, error)
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// GetNodeByIndex gets the commit node from the commit graph using index
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// obtained from child node, if available
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GetCommitDataByIndex(i int) (*CommitData, error)
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// Hashes returns all the hashes that are available in the index
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Hashes() []plumbing.Hash
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}
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@ -1,188 +1,188 @@
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package commitgraph
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import (
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"crypto/sha1"
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"hash"
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"io"
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"github.com/go-git/go-git/v5/plumbing"
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"github.com/go-git/go-git/v5/utils/binary"
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)
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// Encoder writes MemoryIndex structs to an output stream.
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type Encoder struct {
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io.Writer
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hash hash.Hash
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}
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// NewEncoder returns a new stream encoder that writes to w.
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func NewEncoder(w io.Writer) *Encoder {
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h := sha1.New()
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mw := io.MultiWriter(w, h)
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return &Encoder{mw, h}
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}
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// Encode writes an index into the commit-graph file
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func (e *Encoder) Encode(idx Index) error {
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// Get all the hashes in the input index
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hashes := idx.Hashes()
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// Sort the inout and prepare helper structures we'll need for encoding
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hashToIndex, fanout, extraEdgesCount := e.prepare(idx, hashes)
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chunkSignatures := [][]byte{oidFanoutSignature, oidLookupSignature, commitDataSignature}
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chunkSizes := []uint64{4 * 256, uint64(len(hashes)) * 20, uint64(len(hashes)) * 36}
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if extraEdgesCount > 0 {
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chunkSignatures = append(chunkSignatures, extraEdgeListSignature)
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chunkSizes = append(chunkSizes, uint64(extraEdgesCount)*4)
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}
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if err := e.encodeFileHeader(len(chunkSignatures)); err != nil {
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return err
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}
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if err := e.encodeChunkHeaders(chunkSignatures, chunkSizes); err != nil {
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return err
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}
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if err := e.encodeFanout(fanout); err != nil {
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return err
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}
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if err := e.encodeOidLookup(hashes); err != nil {
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return err
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}
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if extraEdges, err := e.encodeCommitData(hashes, hashToIndex, idx); err == nil {
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if err = e.encodeExtraEdges(extraEdges); err != nil {
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return err
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}
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} else {
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return err
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}
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return e.encodeChecksum()
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}
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func (e *Encoder) prepare(idx Index, hashes []plumbing.Hash) (hashToIndex map[plumbing.Hash]uint32, fanout []uint32, extraEdgesCount uint32) {
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// Sort the hashes and build our index
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plumbing.HashesSort(hashes)
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hashToIndex = make(map[plumbing.Hash]uint32)
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fanout = make([]uint32, 256)
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for i, hash := range hashes {
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hashToIndex[hash] = uint32(i)
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fanout[hash[0]]++
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}
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// Convert the fanout to cumulative values
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for i := 1; i <= 0xff; i++ {
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fanout[i] += fanout[i-1]
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}
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// Find out if we will need extra edge table
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for i := 0; i < len(hashes); i++ {
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v, _ := idx.GetCommitDataByIndex(i)
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if len(v.ParentHashes) > 2 {
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extraEdgesCount += uint32(len(v.ParentHashes) - 1)
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break
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}
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}
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return
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}
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func (e *Encoder) encodeFileHeader(chunkCount int) (err error) {
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if _, err = e.Write(commitFileSignature); err == nil {
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_, err = e.Write([]byte{1, 1, byte(chunkCount), 0})
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}
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return
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}
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func (e *Encoder) encodeChunkHeaders(chunkSignatures [][]byte, chunkSizes []uint64) (err error) {
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// 8 bytes of file header, 12 bytes for each chunk header and 12 byte for terminator
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offset := uint64(8 + len(chunkSignatures)*12 + 12)
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for i, signature := range chunkSignatures {
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if _, err = e.Write(signature); err == nil {
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err = binary.WriteUint64(e, offset)
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}
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if err != nil {
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return
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}
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offset += chunkSizes[i]
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}
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if _, err = e.Write(lastSignature); err == nil {
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err = binary.WriteUint64(e, offset)
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}
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return
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}
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func (e *Encoder) encodeFanout(fanout []uint32) (err error) {
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for i := 0; i <= 0xff; i++ {
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if err = binary.WriteUint32(e, fanout[i]); err != nil {
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return
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}
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}
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return
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}
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func (e *Encoder) encodeOidLookup(hashes []plumbing.Hash) (err error) {
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for _, hash := range hashes {
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if _, err = e.Write(hash[:]); err != nil {
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return err
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}
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}
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return
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}
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func (e *Encoder) encodeCommitData(hashes []plumbing.Hash, hashToIndex map[plumbing.Hash]uint32, idx Index) (extraEdges []uint32, err error) {
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for _, hash := range hashes {
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origIndex, _ := idx.GetIndexByHash(hash)
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commitData, _ := idx.GetCommitDataByIndex(origIndex)
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if _, err = e.Write(commitData.TreeHash[:]); err != nil {
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return
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}
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var parent1, parent2 uint32
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if len(commitData.ParentHashes) == 0 {
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parent1 = parentNone
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parent2 = parentNone
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} else if len(commitData.ParentHashes) == 1 {
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parent1 = hashToIndex[commitData.ParentHashes[0]]
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parent2 = parentNone
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} else if len(commitData.ParentHashes) == 2 {
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parent1 = hashToIndex[commitData.ParentHashes[0]]
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parent2 = hashToIndex[commitData.ParentHashes[1]]
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} else if len(commitData.ParentHashes) > 2 {
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parent1 = hashToIndex[commitData.ParentHashes[0]]
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parent2 = uint32(len(extraEdges)) | parentOctopusUsed
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for _, parentHash := range commitData.ParentHashes[1:] {
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extraEdges = append(extraEdges, hashToIndex[parentHash])
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}
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extraEdges[len(extraEdges)-1] |= parentLast
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}
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if err = binary.WriteUint32(e, parent1); err == nil {
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err = binary.WriteUint32(e, parent2)
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}
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if err != nil {
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return
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}
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unixTime := uint64(commitData.When.Unix())
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unixTime |= uint64(commitData.Generation) << 34
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if err = binary.WriteUint64(e, unixTime); err != nil {
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return
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}
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}
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return
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}
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func (e *Encoder) encodeExtraEdges(extraEdges []uint32) (err error) {
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for _, parent := range extraEdges {
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if err = binary.WriteUint32(e, parent); err != nil {
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return
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}
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}
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return
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}
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func (e *Encoder) encodeChecksum() error {
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_, err := e.Write(e.hash.Sum(nil)[:20])
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return err
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}
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package commitgraph
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import (
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"crypto/sha1"
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"hash"
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"io"
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"github.com/go-git/go-git/v5/plumbing"
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"github.com/go-git/go-git/v5/utils/binary"
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)
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// Encoder writes MemoryIndex structs to an output stream.
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type Encoder struct {
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io.Writer
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hash hash.Hash
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}
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// NewEncoder returns a new stream encoder that writes to w.
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func NewEncoder(w io.Writer) *Encoder {
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h := sha1.New()
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mw := io.MultiWriter(w, h)
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return &Encoder{mw, h}
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}
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// Encode writes an index into the commit-graph file
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func (e *Encoder) Encode(idx Index) error {
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// Get all the hashes in the input index
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hashes := idx.Hashes()
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// Sort the inout and prepare helper structures we'll need for encoding
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hashToIndex, fanout, extraEdgesCount := e.prepare(idx, hashes)
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chunkSignatures := [][]byte{oidFanoutSignature, oidLookupSignature, commitDataSignature}
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chunkSizes := []uint64{4 * 256, uint64(len(hashes)) * 20, uint64(len(hashes)) * 36}
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if extraEdgesCount > 0 {
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chunkSignatures = append(chunkSignatures, extraEdgeListSignature)
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chunkSizes = append(chunkSizes, uint64(extraEdgesCount)*4)
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}
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if err := e.encodeFileHeader(len(chunkSignatures)); err != nil {
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return err
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}
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if err := e.encodeChunkHeaders(chunkSignatures, chunkSizes); err != nil {
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return err
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}
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if err := e.encodeFanout(fanout); err != nil {
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return err
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}
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if err := e.encodeOidLookup(hashes); err != nil {
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return err
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}
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if extraEdges, err := e.encodeCommitData(hashes, hashToIndex, idx); err == nil {
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if err = e.encodeExtraEdges(extraEdges); err != nil {
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return err
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}
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} else {
|
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return err
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}
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return e.encodeChecksum()
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}
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func (e *Encoder) prepare(idx Index, hashes []plumbing.Hash) (hashToIndex map[plumbing.Hash]uint32, fanout []uint32, extraEdgesCount uint32) {
|
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// Sort the hashes and build our index
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plumbing.HashesSort(hashes)
|
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hashToIndex = make(map[plumbing.Hash]uint32)
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fanout = make([]uint32, 256)
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for i, hash := range hashes {
|
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hashToIndex[hash] = uint32(i)
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fanout[hash[0]]++
|
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}
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|
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// Convert the fanout to cumulative values
|
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for i := 1; i <= 0xff; i++ {
|
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fanout[i] += fanout[i-1]
|
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}
|
||||
|
||||
// Find out if we will need extra edge table
|
||||
for i := 0; i < len(hashes); i++ {
|
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v, _ := idx.GetCommitDataByIndex(i)
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if len(v.ParentHashes) > 2 {
|
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extraEdgesCount += uint32(len(v.ParentHashes) - 1)
|
||||
break
|
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}
|
||||
}
|
||||
|
||||
return
|
||||
}
|
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|
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func (e *Encoder) encodeFileHeader(chunkCount int) (err error) {
|
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if _, err = e.Write(commitFileSignature); err == nil {
|
||||
_, err = e.Write([]byte{1, 1, byte(chunkCount), 0})
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (e *Encoder) encodeChunkHeaders(chunkSignatures [][]byte, chunkSizes []uint64) (err error) {
|
||||
// 8 bytes of file header, 12 bytes for each chunk header and 12 byte for terminator
|
||||
offset := uint64(8 + len(chunkSignatures)*12 + 12)
|
||||
for i, signature := range chunkSignatures {
|
||||
if _, err = e.Write(signature); err == nil {
|
||||
err = binary.WriteUint64(e, offset)
|
||||
}
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
offset += chunkSizes[i]
|
||||
}
|
||||
if _, err = e.Write(lastSignature); err == nil {
|
||||
err = binary.WriteUint64(e, offset)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (e *Encoder) encodeFanout(fanout []uint32) (err error) {
|
||||
for i := 0; i <= 0xff; i++ {
|
||||
if err = binary.WriteUint32(e, fanout[i]); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (e *Encoder) encodeOidLookup(hashes []plumbing.Hash) (err error) {
|
||||
for _, hash := range hashes {
|
||||
if _, err = e.Write(hash[:]); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (e *Encoder) encodeCommitData(hashes []plumbing.Hash, hashToIndex map[plumbing.Hash]uint32, idx Index) (extraEdges []uint32, err error) {
|
||||
for _, hash := range hashes {
|
||||
origIndex, _ := idx.GetIndexByHash(hash)
|
||||
commitData, _ := idx.GetCommitDataByIndex(origIndex)
|
||||
if _, err = e.Write(commitData.TreeHash[:]); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
var parent1, parent2 uint32
|
||||
if len(commitData.ParentHashes) == 0 {
|
||||
parent1 = parentNone
|
||||
parent2 = parentNone
|
||||
} else if len(commitData.ParentHashes) == 1 {
|
||||
parent1 = hashToIndex[commitData.ParentHashes[0]]
|
||||
parent2 = parentNone
|
||||
} else if len(commitData.ParentHashes) == 2 {
|
||||
parent1 = hashToIndex[commitData.ParentHashes[0]]
|
||||
parent2 = hashToIndex[commitData.ParentHashes[1]]
|
||||
} else if len(commitData.ParentHashes) > 2 {
|
||||
parent1 = hashToIndex[commitData.ParentHashes[0]]
|
||||
parent2 = uint32(len(extraEdges)) | parentOctopusUsed
|
||||
for _, parentHash := range commitData.ParentHashes[1:] {
|
||||
extraEdges = append(extraEdges, hashToIndex[parentHash])
|
||||
}
|
||||
extraEdges[len(extraEdges)-1] |= parentLast
|
||||
}
|
||||
|
||||
if err = binary.WriteUint32(e, parent1); err == nil {
|
||||
err = binary.WriteUint32(e, parent2)
|
||||
}
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
unixTime := uint64(commitData.When.Unix())
|
||||
unixTime |= uint64(commitData.Generation) << 34
|
||||
if err = binary.WriteUint64(e, unixTime); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (e *Encoder) encodeExtraEdges(extraEdges []uint32) (err error) {
|
||||
for _, parent := range extraEdges {
|
||||
if err = binary.WriteUint32(e, parent); err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (e *Encoder) encodeChecksum() error {
|
||||
_, err := e.Write(e.hash.Sum(nil)[:20])
|
||||
return err
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,259 +1,259 @@
|
|||
package commitgraph
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
encbin "encoding/binary"
|
||||
"errors"
|
||||
"io"
|
||||
"time"
|
||||
|
||||
"github.com/go-git/go-git/v5/plumbing"
|
||||
"github.com/go-git/go-git/v5/utils/binary"
|
||||
)
|
||||
|
||||
var (
|
||||
// ErrUnsupportedVersion is returned by OpenFileIndex when the commit graph
|
||||
// file version is not supported.
|
||||
ErrUnsupportedVersion = errors.New("Unsupported version")
|
||||
// ErrUnsupportedHash is returned by OpenFileIndex when the commit graph
|
||||
// hash function is not supported. Currently only SHA-1 is defined and
|
||||
// supported
|
||||
ErrUnsupportedHash = errors.New("Unsupported hash algorithm")
|
||||
// ErrMalformedCommitGraphFile is returned by OpenFileIndex when the commit
|
||||
// graph file is corrupted.
|
||||
ErrMalformedCommitGraphFile = errors.New("Malformed commit graph file")
|
||||
|
||||
commitFileSignature = []byte{'C', 'G', 'P', 'H'}
|
||||
oidFanoutSignature = []byte{'O', 'I', 'D', 'F'}
|
||||
oidLookupSignature = []byte{'O', 'I', 'D', 'L'}
|
||||
commitDataSignature = []byte{'C', 'D', 'A', 'T'}
|
||||
extraEdgeListSignature = []byte{'E', 'D', 'G', 'E'}
|
||||
lastSignature = []byte{0, 0, 0, 0}
|
||||
|
||||
parentNone = uint32(0x70000000)
|
||||
parentOctopusUsed = uint32(0x80000000)
|
||||
parentOctopusMask = uint32(0x7fffffff)
|
||||
parentLast = uint32(0x80000000)
|
||||
)
|
||||
|
||||
type fileIndex struct {
|
||||
reader io.ReaderAt
|
||||
fanout [256]int
|
||||
oidFanoutOffset int64
|
||||
oidLookupOffset int64
|
||||
commitDataOffset int64
|
||||
extraEdgeListOffset int64
|
||||
}
|
||||
|
||||
// OpenFileIndex opens a serialized commit graph file in the format described at
|
||||
// https://github.com/git/git/blob/master/Documentation/technical/commit-graph-format.txt
|
||||
func OpenFileIndex(reader io.ReaderAt) (Index, error) {
|
||||
fi := &fileIndex{reader: reader}
|
||||
|
||||
if err := fi.verifyFileHeader(); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if err := fi.readChunkHeaders(); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if err := fi.readFanout(); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return fi, nil
|
||||
}
|
||||
|
||||
func (fi *fileIndex) verifyFileHeader() error {
|
||||
// Verify file signature
|
||||
var signature = make([]byte, 4)
|
||||
if _, err := fi.reader.ReadAt(signature, 0); err != nil {
|
||||
return err
|
||||
}
|
||||
if !bytes.Equal(signature, commitFileSignature) {
|
||||
return ErrMalformedCommitGraphFile
|
||||
}
|
||||
|
||||
// Read and verify the file header
|
||||
var header = make([]byte, 4)
|
||||
if _, err := fi.reader.ReadAt(header, 4); err != nil {
|
||||
return err
|
||||
}
|
||||
if header[0] != 1 {
|
||||
return ErrUnsupportedVersion
|
||||
}
|
||||
if header[1] != 1 {
|
||||
return ErrUnsupportedHash
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (fi *fileIndex) readChunkHeaders() error {
|
||||
var chunkID = make([]byte, 4)
|
||||
for i := 0; ; i++ {
|
||||
chunkHeader := io.NewSectionReader(fi.reader, 8+(int64(i)*12), 12)
|
||||
if _, err := io.ReadAtLeast(chunkHeader, chunkID, 4); err != nil {
|
||||
return err
|
||||
}
|
||||
chunkOffset, err := binary.ReadUint64(chunkHeader)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if bytes.Equal(chunkID, oidFanoutSignature) {
|
||||
fi.oidFanoutOffset = int64(chunkOffset)
|
||||
} else if bytes.Equal(chunkID, oidLookupSignature) {
|
||||
fi.oidLookupOffset = int64(chunkOffset)
|
||||
} else if bytes.Equal(chunkID, commitDataSignature) {
|
||||
fi.commitDataOffset = int64(chunkOffset)
|
||||
} else if bytes.Equal(chunkID, extraEdgeListSignature) {
|
||||
fi.extraEdgeListOffset = int64(chunkOffset)
|
||||
} else if bytes.Equal(chunkID, lastSignature) {
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
if fi.oidFanoutOffset <= 0 || fi.oidLookupOffset <= 0 || fi.commitDataOffset <= 0 {
|
||||
return ErrMalformedCommitGraphFile
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (fi *fileIndex) readFanout() error {
|
||||
fanoutReader := io.NewSectionReader(fi.reader, fi.oidFanoutOffset, 256*4)
|
||||
for i := 0; i < 256; i++ {
|
||||
fanoutValue, err := binary.ReadUint32(fanoutReader)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if fanoutValue > 0x7fffffff {
|
||||
return ErrMalformedCommitGraphFile
|
||||
}
|
||||
fi.fanout[i] = int(fanoutValue)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (fi *fileIndex) GetIndexByHash(h plumbing.Hash) (int, error) {
|
||||
var oid plumbing.Hash
|
||||
|
||||
// Find the hash in the oid lookup table
|
||||
var low int
|
||||
if h[0] == 0 {
|
||||
low = 0
|
||||
} else {
|
||||
low = fi.fanout[h[0]-1]
|
||||
}
|
||||
high := fi.fanout[h[0]]
|
||||
for low < high {
|
||||
mid := (low + high) >> 1
|
||||
offset := fi.oidLookupOffset + int64(mid)*20
|
||||
if _, err := fi.reader.ReadAt(oid[:], offset); err != nil {
|
||||
return 0, err
|
||||
}
|
||||
cmp := bytes.Compare(h[:], oid[:])
|
||||
if cmp < 0 {
|
||||
high = mid
|
||||
} else if cmp == 0 {
|
||||
return mid, nil
|
||||
} else {
|
||||
low = mid + 1
|
||||
}
|
||||
}
|
||||
|
||||
return 0, plumbing.ErrObjectNotFound
|
||||
}
|
||||
|
||||
func (fi *fileIndex) GetCommitDataByIndex(idx int) (*CommitData, error) {
|
||||
if idx >= fi.fanout[0xff] {
|
||||
return nil, plumbing.ErrObjectNotFound
|
||||
}
|
||||
|
||||
offset := fi.commitDataOffset + int64(idx)*36
|
||||
commitDataReader := io.NewSectionReader(fi.reader, offset, 36)
|
||||
|
||||
treeHash, err := binary.ReadHash(commitDataReader)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
parent1, err := binary.ReadUint32(commitDataReader)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
parent2, err := binary.ReadUint32(commitDataReader)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
genAndTime, err := binary.ReadUint64(commitDataReader)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
var parentIndexes []int
|
||||
if parent2&parentOctopusUsed == parentOctopusUsed {
|
||||
// Octopus merge
|
||||
parentIndexes = []int{int(parent1 & parentOctopusMask)}
|
||||
offset := fi.extraEdgeListOffset + 4*int64(parent2&parentOctopusMask)
|
||||
buf := make([]byte, 4)
|
||||
for {
|
||||
_, err := fi.reader.ReadAt(buf, offset)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
parent := encbin.BigEndian.Uint32(buf)
|
||||
offset += 4
|
||||
parentIndexes = append(parentIndexes, int(parent&parentOctopusMask))
|
||||
if parent&parentLast == parentLast {
|
||||
break
|
||||
}
|
||||
}
|
||||
} else if parent2 != parentNone {
|
||||
parentIndexes = []int{int(parent1 & parentOctopusMask), int(parent2 & parentOctopusMask)}
|
||||
} else if parent1 != parentNone {
|
||||
parentIndexes = []int{int(parent1 & parentOctopusMask)}
|
||||
}
|
||||
|
||||
parentHashes, err := fi.getHashesFromIndexes(parentIndexes)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return &CommitData{
|
||||
TreeHash: treeHash,
|
||||
ParentIndexes: parentIndexes,
|
||||
ParentHashes: parentHashes,
|
||||
Generation: int(genAndTime >> 34),
|
||||
When: time.Unix(int64(genAndTime&0x3FFFFFFFF), 0),
|
||||
}, nil
|
||||
}
|
||||
|
||||
func (fi *fileIndex) getHashesFromIndexes(indexes []int) ([]plumbing.Hash, error) {
|
||||
hashes := make([]plumbing.Hash, len(indexes))
|
||||
|
||||
for i, idx := range indexes {
|
||||
if idx >= fi.fanout[0xff] {
|
||||
return nil, ErrMalformedCommitGraphFile
|
||||
}
|
||||
|
||||
offset := fi.oidLookupOffset + int64(idx)*20
|
||||
if _, err := fi.reader.ReadAt(hashes[i][:], offset); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
return hashes, nil
|
||||
}
|
||||
|
||||
// Hashes returns all the hashes that are available in the index
|
||||
func (fi *fileIndex) Hashes() []plumbing.Hash {
|
||||
hashes := make([]plumbing.Hash, fi.fanout[0xff])
|
||||
for i := 0; i < fi.fanout[0xff]; i++ {
|
||||
offset := fi.oidLookupOffset + int64(i)*20
|
||||
if n, err := fi.reader.ReadAt(hashes[i][:], offset); err != nil || n < 20 {
|
||||
return nil
|
||||
}
|
||||
}
|
||||
return hashes
|
||||
}
|
||||
package commitgraph
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
encbin "encoding/binary"
|
||||
"errors"
|
||||
"io"
|
||||
"time"
|
||||
|
||||
"github.com/go-git/go-git/v5/plumbing"
|
||||
"github.com/go-git/go-git/v5/utils/binary"
|
||||
)
|
||||
|
||||
var (
|
||||
// ErrUnsupportedVersion is returned by OpenFileIndex when the commit graph
|
||||
// file version is not supported.
|
||||
ErrUnsupportedVersion = errors.New("Unsupported version")
|
||||
// ErrUnsupportedHash is returned by OpenFileIndex when the commit graph
|
||||
// hash function is not supported. Currently only SHA-1 is defined and
|
||||
// supported
|
||||
ErrUnsupportedHash = errors.New("Unsupported hash algorithm")
|
||||
// ErrMalformedCommitGraphFile is returned by OpenFileIndex when the commit
|
||||
// graph file is corrupted.
|
||||
ErrMalformedCommitGraphFile = errors.New("Malformed commit graph file")
|
||||
|
||||
commitFileSignature = []byte{'C', 'G', 'P', 'H'}
|
||||
oidFanoutSignature = []byte{'O', 'I', 'D', 'F'}
|
||||
oidLookupSignature = []byte{'O', 'I', 'D', 'L'}
|
||||
commitDataSignature = []byte{'C', 'D', 'A', 'T'}
|
||||
extraEdgeListSignature = []byte{'E', 'D', 'G', 'E'}
|
||||
lastSignature = []byte{0, 0, 0, 0}
|
||||
|
||||
parentNone = uint32(0x70000000)
|
||||
parentOctopusUsed = uint32(0x80000000)
|
||||
parentOctopusMask = uint32(0x7fffffff)
|
||||
parentLast = uint32(0x80000000)
|
||||
)
|
||||
|
||||
type fileIndex struct {
|
||||
reader io.ReaderAt
|
||||
fanout [256]int
|
||||
oidFanoutOffset int64
|
||||
oidLookupOffset int64
|
||||
commitDataOffset int64
|
||||
extraEdgeListOffset int64
|
||||
}
|
||||
|
||||
// OpenFileIndex opens a serialized commit graph file in the format described at
|
||||
// https://github.com/git/git/blob/master/Documentation/technical/commit-graph-format.txt
|
||||
func OpenFileIndex(reader io.ReaderAt) (Index, error) {
|
||||
fi := &fileIndex{reader: reader}
|
||||
|
||||
if err := fi.verifyFileHeader(); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if err := fi.readChunkHeaders(); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if err := fi.readFanout(); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return fi, nil
|
||||
}
|
||||
|
||||
func (fi *fileIndex) verifyFileHeader() error {
|
||||
// Verify file signature
|
||||
var signature = make([]byte, 4)
|
||||
if _, err := fi.reader.ReadAt(signature, 0); err != nil {
|
||||
return err
|
||||
}
|
||||
if !bytes.Equal(signature, commitFileSignature) {
|
||||
return ErrMalformedCommitGraphFile
|
||||
}
|
||||
|
||||
// Read and verify the file header
|
||||
var header = make([]byte, 4)
|
||||
if _, err := fi.reader.ReadAt(header, 4); err != nil {
|
||||
return err
|
||||
}
|
||||
if header[0] != 1 {
|
||||
return ErrUnsupportedVersion
|
||||
}
|
||||
if header[1] != 1 {
|
||||
return ErrUnsupportedHash
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (fi *fileIndex) readChunkHeaders() error {
|
||||
var chunkID = make([]byte, 4)
|
||||
for i := 0; ; i++ {
|
||||
chunkHeader := io.NewSectionReader(fi.reader, 8+(int64(i)*12), 12)
|
||||
if _, err := io.ReadAtLeast(chunkHeader, chunkID, 4); err != nil {
|
||||
return err
|
||||
}
|
||||
chunkOffset, err := binary.ReadUint64(chunkHeader)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if bytes.Equal(chunkID, oidFanoutSignature) {
|
||||
fi.oidFanoutOffset = int64(chunkOffset)
|
||||
} else if bytes.Equal(chunkID, oidLookupSignature) {
|
||||
fi.oidLookupOffset = int64(chunkOffset)
|
||||
} else if bytes.Equal(chunkID, commitDataSignature) {
|
||||
fi.commitDataOffset = int64(chunkOffset)
|
||||
} else if bytes.Equal(chunkID, extraEdgeListSignature) {
|
||||
fi.extraEdgeListOffset = int64(chunkOffset)
|
||||
} else if bytes.Equal(chunkID, lastSignature) {
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
if fi.oidFanoutOffset <= 0 || fi.oidLookupOffset <= 0 || fi.commitDataOffset <= 0 {
|
||||
return ErrMalformedCommitGraphFile
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (fi *fileIndex) readFanout() error {
|
||||
fanoutReader := io.NewSectionReader(fi.reader, fi.oidFanoutOffset, 256*4)
|
||||
for i := 0; i < 256; i++ {
|
||||
fanoutValue, err := binary.ReadUint32(fanoutReader)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if fanoutValue > 0x7fffffff {
|
||||
return ErrMalformedCommitGraphFile
|
||||
}
|
||||
fi.fanout[i] = int(fanoutValue)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (fi *fileIndex) GetIndexByHash(h plumbing.Hash) (int, error) {
|
||||
var oid plumbing.Hash
|
||||
|
||||
// Find the hash in the oid lookup table
|
||||
var low int
|
||||
if h[0] == 0 {
|
||||
low = 0
|
||||
} else {
|
||||
low = fi.fanout[h[0]-1]
|
||||
}
|
||||
high := fi.fanout[h[0]]
|
||||
for low < high {
|
||||
mid := (low + high) >> 1
|
||||
offset := fi.oidLookupOffset + int64(mid)*20
|
||||
if _, err := fi.reader.ReadAt(oid[:], offset); err != nil {
|
||||
return 0, err
|
||||
}
|
||||
cmp := bytes.Compare(h[:], oid[:])
|
||||
if cmp < 0 {
|
||||
high = mid
|
||||
} else if cmp == 0 {
|
||||
return mid, nil
|
||||
} else {
|
||||
low = mid + 1
|
||||
}
|
||||
}
|
||||
|
||||
return 0, plumbing.ErrObjectNotFound
|
||||
}
|
||||
|
||||
func (fi *fileIndex) GetCommitDataByIndex(idx int) (*CommitData, error) {
|
||||
if idx >= fi.fanout[0xff] {
|
||||
return nil, plumbing.ErrObjectNotFound
|
||||
}
|
||||
|
||||
offset := fi.commitDataOffset + int64(idx)*36
|
||||
commitDataReader := io.NewSectionReader(fi.reader, offset, 36)
|
||||
|
||||
treeHash, err := binary.ReadHash(commitDataReader)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
parent1, err := binary.ReadUint32(commitDataReader)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
parent2, err := binary.ReadUint32(commitDataReader)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
genAndTime, err := binary.ReadUint64(commitDataReader)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
var parentIndexes []int
|
||||
if parent2&parentOctopusUsed == parentOctopusUsed {
|
||||
// Octopus merge
|
||||
parentIndexes = []int{int(parent1 & parentOctopusMask)}
|
||||
offset := fi.extraEdgeListOffset + 4*int64(parent2&parentOctopusMask)
|
||||
buf := make([]byte, 4)
|
||||
for {
|
||||
_, err := fi.reader.ReadAt(buf, offset)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
parent := encbin.BigEndian.Uint32(buf)
|
||||
offset += 4
|
||||
parentIndexes = append(parentIndexes, int(parent&parentOctopusMask))
|
||||
if parent&parentLast == parentLast {
|
||||
break
|
||||
}
|
||||
}
|
||||
} else if parent2 != parentNone {
|
||||
parentIndexes = []int{int(parent1 & parentOctopusMask), int(parent2 & parentOctopusMask)}
|
||||
} else if parent1 != parentNone {
|
||||
parentIndexes = []int{int(parent1 & parentOctopusMask)}
|
||||
}
|
||||
|
||||
parentHashes, err := fi.getHashesFromIndexes(parentIndexes)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return &CommitData{
|
||||
TreeHash: treeHash,
|
||||
ParentIndexes: parentIndexes,
|
||||
ParentHashes: parentHashes,
|
||||
Generation: int(genAndTime >> 34),
|
||||
When: time.Unix(int64(genAndTime&0x3FFFFFFFF), 0),
|
||||
}, nil
|
||||
}
|
||||
|
||||
func (fi *fileIndex) getHashesFromIndexes(indexes []int) ([]plumbing.Hash, error) {
|
||||
hashes := make([]plumbing.Hash, len(indexes))
|
||||
|
||||
for i, idx := range indexes {
|
||||
if idx >= fi.fanout[0xff] {
|
||||
return nil, ErrMalformedCommitGraphFile
|
||||
}
|
||||
|
||||
offset := fi.oidLookupOffset + int64(idx)*20
|
||||
if _, err := fi.reader.ReadAt(hashes[i][:], offset); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
return hashes, nil
|
||||
}
|
||||
|
||||
// Hashes returns all the hashes that are available in the index
|
||||
func (fi *fileIndex) Hashes() []plumbing.Hash {
|
||||
hashes := make([]plumbing.Hash, fi.fanout[0xff])
|
||||
for i := 0; i < fi.fanout[0xff]; i++ {
|
||||
offset := fi.oidLookupOffset + int64(i)*20
|
||||
if n, err := fi.reader.ReadAt(hashes[i][:], offset); err != nil || n < 20 {
|
||||
return nil
|
||||
}
|
||||
}
|
||||
return hashes
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,72 +1,72 @@
|
|||
package commitgraph
|
||||
|
||||
import (
|
||||
"github.com/go-git/go-git/v5/plumbing"
|
||||
)
|
||||
|
||||
// MemoryIndex provides a way to build the commit-graph in memory
|
||||
// for later encoding to file.
|
||||
type MemoryIndex struct {
|
||||
commitData []*CommitData
|
||||
indexMap map[plumbing.Hash]int
|
||||
}
|
||||
|
||||
// NewMemoryIndex creates in-memory commit graph representation
|
||||
func NewMemoryIndex() *MemoryIndex {
|
||||
return &MemoryIndex{
|
||||
indexMap: make(map[plumbing.Hash]int),
|
||||
}
|
||||
}
|
||||
|
||||
// GetIndexByHash gets the index in the commit graph from commit hash, if available
|
||||
func (mi *MemoryIndex) GetIndexByHash(h plumbing.Hash) (int, error) {
|
||||
i, ok := mi.indexMap[h]
|
||||
if ok {
|
||||
return i, nil
|
||||
}
|
||||
|
||||
return 0, plumbing.ErrObjectNotFound
|
||||
}
|
||||
|
||||
// GetCommitDataByIndex gets the commit node from the commit graph using index
|
||||
// obtained from child node, if available
|
||||
func (mi *MemoryIndex) GetCommitDataByIndex(i int) (*CommitData, error) {
|
||||
if i >= len(mi.commitData) {
|
||||
return nil, plumbing.ErrObjectNotFound
|
||||
}
|
||||
|
||||
commitData := mi.commitData[i]
|
||||
|
||||
// Map parent hashes to parent indexes
|
||||
if commitData.ParentIndexes == nil {
|
||||
parentIndexes := make([]int, len(commitData.ParentHashes))
|
||||
for i, parentHash := range commitData.ParentHashes {
|
||||
var err error
|
||||
if parentIndexes[i], err = mi.GetIndexByHash(parentHash); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
commitData.ParentIndexes = parentIndexes
|
||||
}
|
||||
|
||||
return commitData, nil
|
||||
}
|
||||
|
||||
// Hashes returns all the hashes that are available in the index
|
||||
func (mi *MemoryIndex) Hashes() []plumbing.Hash {
|
||||
hashes := make([]plumbing.Hash, 0, len(mi.indexMap))
|
||||
for k := range mi.indexMap {
|
||||
hashes = append(hashes, k)
|
||||
}
|
||||
return hashes
|
||||
}
|
||||
|
||||
// Add adds new node to the memory index
|
||||
func (mi *MemoryIndex) Add(hash plumbing.Hash, commitData *CommitData) {
|
||||
// The parent indexes are calculated lazily in GetNodeByIndex
|
||||
// which allows adding nodes out of order as long as all parents
|
||||
// are eventually resolved
|
||||
commitData.ParentIndexes = nil
|
||||
mi.indexMap[hash] = len(mi.commitData)
|
||||
mi.commitData = append(mi.commitData, commitData)
|
||||
}
|
||||
package commitgraph
|
||||
|
||||
import (
|
||||
"github.com/go-git/go-git/v5/plumbing"
|
||||
)
|
||||
|
||||
// MemoryIndex provides a way to build the commit-graph in memory
|
||||
// for later encoding to file.
|
||||
type MemoryIndex struct {
|
||||
commitData []*CommitData
|
||||
indexMap map[plumbing.Hash]int
|
||||
}
|
||||
|
||||
// NewMemoryIndex creates in-memory commit graph representation
|
||||
func NewMemoryIndex() *MemoryIndex {
|
||||
return &MemoryIndex{
|
||||
indexMap: make(map[plumbing.Hash]int),
|
||||
}
|
||||
}
|
||||
|
||||
// GetIndexByHash gets the index in the commit graph from commit hash, if available
|
||||
func (mi *MemoryIndex) GetIndexByHash(h plumbing.Hash) (int, error) {
|
||||
i, ok := mi.indexMap[h]
|
||||
if ok {
|
||||
return i, nil
|
||||
}
|
||||
|
||||
return 0, plumbing.ErrObjectNotFound
|
||||
}
|
||||
|
||||
// GetCommitDataByIndex gets the commit node from the commit graph using index
|
||||
// obtained from child node, if available
|
||||
func (mi *MemoryIndex) GetCommitDataByIndex(i int) (*CommitData, error) {
|
||||
if i >= len(mi.commitData) {
|
||||
return nil, plumbing.ErrObjectNotFound
|
||||
}
|
||||
|
||||
commitData := mi.commitData[i]
|
||||
|
||||
// Map parent hashes to parent indexes
|
||||
if commitData.ParentIndexes == nil {
|
||||
parentIndexes := make([]int, len(commitData.ParentHashes))
|
||||
for i, parentHash := range commitData.ParentHashes {
|
||||
var err error
|
||||
if parentIndexes[i], err = mi.GetIndexByHash(parentHash); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
commitData.ParentIndexes = parentIndexes
|
||||
}
|
||||
|
||||
return commitData, nil
|
||||
}
|
||||
|
||||
// Hashes returns all the hashes that are available in the index
|
||||
func (mi *MemoryIndex) Hashes() []plumbing.Hash {
|
||||
hashes := make([]plumbing.Hash, 0, len(mi.indexMap))
|
||||
for k := range mi.indexMap {
|
||||
hashes = append(hashes, k)
|
||||
}
|
||||
return hashes
|
||||
}
|
||||
|
||||
// Add adds new node to the memory index
|
||||
func (mi *MemoryIndex) Add(hash plumbing.Hash, commitData *CommitData) {
|
||||
// The parent indexes are calculated lazily in GetNodeByIndex
|
||||
// which allows adding nodes out of order as long as all parents
|
||||
// are eventually resolved
|
||||
commitData.ParentIndexes = nil
|
||||
mi.indexMap[hash] = len(mi.commitData)
|
||||
mi.commitData = append(mi.commitData, commitData)
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,98 +1,98 @@
|
|||
package commitgraph
|
||||
|
||||
import (
|
||||
"io"
|
||||
"time"
|
||||
|
||||
"github.com/go-git/go-git/v5/plumbing"
|
||||
"github.com/go-git/go-git/v5/plumbing/object"
|
||||
"github.com/go-git/go-git/v5/plumbing/storer"
|
||||
)
|
||||
|
||||
// CommitNode is generic interface encapsulating a lightweight commit object retrieved
|
||||
// from CommitNodeIndex
|
||||
type CommitNode interface {
|
||||
// ID returns the Commit object id referenced by the commit graph node.
|
||||
ID() plumbing.Hash
|
||||
// Tree returns the Tree referenced by the commit graph node.
|
||||
Tree() (*object.Tree, error)
|
||||
// CommitTime returns the Commiter.When time of the Commit referenced by the commit graph node.
|
||||
CommitTime() time.Time
|
||||
// NumParents returns the number of parents in a commit.
|
||||
NumParents() int
|
||||
// ParentNodes return a CommitNodeIter for parents of specified node.
|
||||
ParentNodes() CommitNodeIter
|
||||
// ParentNode returns the ith parent of a commit.
|
||||
ParentNode(i int) (CommitNode, error)
|
||||
// ParentHashes returns hashes of the parent commits for a specified node
|
||||
ParentHashes() []plumbing.Hash
|
||||
// Generation returns the generation of the commit for reachability analysis.
|
||||
// Objects with newer generation are not reachable from objects of older generation.
|
||||
Generation() uint64
|
||||
// Commit returns the full commit object from the node
|
||||
Commit() (*object.Commit, error)
|
||||
}
|
||||
|
||||
// CommitNodeIndex is generic interface encapsulating an index of CommitNode objects
|
||||
type CommitNodeIndex interface {
|
||||
// Get returns a commit node from a commit hash
|
||||
Get(hash plumbing.Hash) (CommitNode, error)
|
||||
}
|
||||
|
||||
// CommitNodeIter is a generic closable interface for iterating over commit nodes.
|
||||
type CommitNodeIter interface {
|
||||
Next() (CommitNode, error)
|
||||
ForEach(func(CommitNode) error) error
|
||||
Close()
|
||||
}
|
||||
|
||||
// parentCommitNodeIter provides an iterator for parent commits from associated CommitNodeIndex.
|
||||
type parentCommitNodeIter struct {
|
||||
node CommitNode
|
||||
i int
|
||||
}
|
||||
|
||||
func newParentgraphCommitNodeIter(node CommitNode) CommitNodeIter {
|
||||
return &parentCommitNodeIter{node, 0}
|
||||
}
|
||||
|
||||
// Next moves the iterator to the next commit and returns a pointer to it. If
|
||||
// there are no more commits, it returns io.EOF.
|
||||
func (iter *parentCommitNodeIter) Next() (CommitNode, error) {
|
||||
obj, err := iter.node.ParentNode(iter.i)
|
||||
if err == object.ErrParentNotFound {
|
||||
return nil, io.EOF
|
||||
}
|
||||
if err == nil {
|
||||
iter.i++
|
||||
}
|
||||
|
||||
return obj, err
|
||||
}
|
||||
|
||||
// ForEach call the cb function for each commit contained on this iter until
|
||||
// an error appends or the end of the iter is reached. If ErrStop is sent
|
||||
// the iteration is stopped but no error is returned. The iterator is closed.
|
||||
func (iter *parentCommitNodeIter) ForEach(cb func(CommitNode) error) error {
|
||||
for {
|
||||
obj, err := iter.Next()
|
||||
if err != nil {
|
||||
if err == io.EOF {
|
||||
return nil
|
||||
}
|
||||
|
||||
return err
|
||||
}
|
||||
|
||||
if err := cb(obj); err != nil {
|
||||
if err == storer.ErrStop {
|
||||
return nil
|
||||
}
|
||||
|
||||
return err
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (iter *parentCommitNodeIter) Close() {
|
||||
}
|
||||
package commitgraph
|
||||
|
||||
import (
|
||||
"io"
|
||||
"time"
|
||||
|
||||
"github.com/go-git/go-git/v5/plumbing"
|
||||
"github.com/go-git/go-git/v5/plumbing/object"
|
||||
"github.com/go-git/go-git/v5/plumbing/storer"
|
||||
)
|
||||
|
||||
// CommitNode is generic interface encapsulating a lightweight commit object retrieved
|
||||
// from CommitNodeIndex
|
||||
type CommitNode interface {
|
||||
// ID returns the Commit object id referenced by the commit graph node.
|
||||
ID() plumbing.Hash
|
||||
// Tree returns the Tree referenced by the commit graph node.
|
||||
Tree() (*object.Tree, error)
|
||||
// CommitTime returns the Commiter.When time of the Commit referenced by the commit graph node.
|
||||
CommitTime() time.Time
|
||||
// NumParents returns the number of parents in a commit.
|
||||
NumParents() int
|
||||
// ParentNodes return a CommitNodeIter for parents of specified node.
|
||||
ParentNodes() CommitNodeIter
|
||||
// ParentNode returns the ith parent of a commit.
|
||||
ParentNode(i int) (CommitNode, error)
|
||||
// ParentHashes returns hashes of the parent commits for a specified node
|
||||
ParentHashes() []plumbing.Hash
|
||||
// Generation returns the generation of the commit for reachability analysis.
|
||||
// Objects with newer generation are not reachable from objects of older generation.
|
||||
Generation() uint64
|
||||
// Commit returns the full commit object from the node
|
||||
Commit() (*object.Commit, error)
|
||||
}
|
||||
|
||||
// CommitNodeIndex is generic interface encapsulating an index of CommitNode objects
|
||||
type CommitNodeIndex interface {
|
||||
// Get returns a commit node from a commit hash
|
||||
Get(hash plumbing.Hash) (CommitNode, error)
|
||||
}
|
||||
|
||||
// CommitNodeIter is a generic closable interface for iterating over commit nodes.
|
||||
type CommitNodeIter interface {
|
||||
Next() (CommitNode, error)
|
||||
ForEach(func(CommitNode) error) error
|
||||
Close()
|
||||
}
|
||||
|
||||
// parentCommitNodeIter provides an iterator for parent commits from associated CommitNodeIndex.
|
||||
type parentCommitNodeIter struct {
|
||||
node CommitNode
|
||||
i int
|
||||
}
|
||||
|
||||
func newParentgraphCommitNodeIter(node CommitNode) CommitNodeIter {
|
||||
return &parentCommitNodeIter{node, 0}
|
||||
}
|
||||
|
||||
// Next moves the iterator to the next commit and returns a pointer to it. If
|
||||
// there are no more commits, it returns io.EOF.
|
||||
func (iter *parentCommitNodeIter) Next() (CommitNode, error) {
|
||||
obj, err := iter.node.ParentNode(iter.i)
|
||||
if err == object.ErrParentNotFound {
|
||||
return nil, io.EOF
|
||||
}
|
||||
if err == nil {
|
||||
iter.i++
|
||||
}
|
||||
|
||||
return obj, err
|
||||
}
|
||||
|
||||
// ForEach call the cb function for each commit contained on this iter until
|
||||
// an error appends or the end of the iter is reached. If ErrStop is sent
|
||||
// the iteration is stopped but no error is returned. The iterator is closed.
|
||||
func (iter *parentCommitNodeIter) ForEach(cb func(CommitNode) error) error {
|
||||
for {
|
||||
obj, err := iter.Next()
|
||||
if err != nil {
|
||||
if err == io.EOF {
|
||||
return nil
|
||||
}
|
||||
|
||||
return err
|
||||
}
|
||||
|
||||
if err := cb(obj); err != nil {
|
||||
if err == storer.ErrStop {
|
||||
return nil
|
||||
}
|
||||
|
||||
return err
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (iter *parentCommitNodeIter) Close() {
|
||||
}
|
||||
|
|
|
|||
262
vendor/github.com/go-git/go-git/v5/plumbing/object/commitgraph/commitnode_graph.go
generated
vendored
262
vendor/github.com/go-git/go-git/v5/plumbing/object/commitgraph/commitnode_graph.go
generated
vendored
|
|
@ -1,131 +1,131 @@
|
|||
package commitgraph
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"time"
|
||||
|
||||
"github.com/go-git/go-git/v5/plumbing"
|
||||
"github.com/go-git/go-git/v5/plumbing/format/commitgraph"
|
||||
"github.com/go-git/go-git/v5/plumbing/object"
|
||||
"github.com/go-git/go-git/v5/plumbing/storer"
|
||||
)
|
||||
|
||||
// graphCommitNode is a reduced representation of Commit as presented in the commit
|
||||
// graph file (commitgraph.Node). It is merely useful as an optimization for walking
|
||||
// the commit graphs.
|
||||
//
|
||||
// graphCommitNode implements the CommitNode interface.
|
||||
type graphCommitNode struct {
|
||||
// Hash for the Commit object
|
||||
hash plumbing.Hash
|
||||
// Index of the node in the commit graph file
|
||||
index int
|
||||
|
||||
commitData *commitgraph.CommitData
|
||||
gci *graphCommitNodeIndex
|
||||
}
|
||||
|
||||
// graphCommitNodeIndex is an index that can load CommitNode objects from both the commit
|
||||
// graph files and the object store.
|
||||
//
|
||||
// graphCommitNodeIndex implements the CommitNodeIndex interface
|
||||
type graphCommitNodeIndex struct {
|
||||
commitGraph commitgraph.Index
|
||||
s storer.EncodedObjectStorer
|
||||
}
|
||||
|
||||
// NewGraphCommitNodeIndex returns CommitNodeIndex implementation that uses commit-graph
|
||||
// files as backing storage and falls back to object storage when necessary
|
||||
func NewGraphCommitNodeIndex(commitGraph commitgraph.Index, s storer.EncodedObjectStorer) CommitNodeIndex {
|
||||
return &graphCommitNodeIndex{commitGraph, s}
|
||||
}
|
||||
|
||||
func (gci *graphCommitNodeIndex) Get(hash plumbing.Hash) (CommitNode, error) {
|
||||
// Check the commit graph first
|
||||
parentIndex, err := gci.commitGraph.GetIndexByHash(hash)
|
||||
if err == nil {
|
||||
parent, err := gci.commitGraph.GetCommitDataByIndex(parentIndex)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return &graphCommitNode{
|
||||
hash: hash,
|
||||
index: parentIndex,
|
||||
commitData: parent,
|
||||
gci: gci,
|
||||
}, nil
|
||||
}
|
||||
|
||||
// Fallback to loading full commit object
|
||||
commit, err := object.GetCommit(gci.s, hash)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return &objectCommitNode{
|
||||
nodeIndex: gci,
|
||||
commit: commit,
|
||||
}, nil
|
||||
}
|
||||
|
||||
func (c *graphCommitNode) ID() plumbing.Hash {
|
||||
return c.hash
|
||||
}
|
||||
|
||||
func (c *graphCommitNode) Tree() (*object.Tree, error) {
|
||||
return object.GetTree(c.gci.s, c.commitData.TreeHash)
|
||||
}
|
||||
|
||||
func (c *graphCommitNode) CommitTime() time.Time {
|
||||
return c.commitData.When
|
||||
}
|
||||
|
||||
func (c *graphCommitNode) NumParents() int {
|
||||
return len(c.commitData.ParentIndexes)
|
||||
}
|
||||
|
||||
func (c *graphCommitNode) ParentNodes() CommitNodeIter {
|
||||
return newParentgraphCommitNodeIter(c)
|
||||
}
|
||||
|
||||
func (c *graphCommitNode) ParentNode(i int) (CommitNode, error) {
|
||||
if i < 0 || i >= len(c.commitData.ParentIndexes) {
|
||||
return nil, object.ErrParentNotFound
|
||||
}
|
||||
|
||||
parent, err := c.gci.commitGraph.GetCommitDataByIndex(c.commitData.ParentIndexes[i])
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return &graphCommitNode{
|
||||
hash: c.commitData.ParentHashes[i],
|
||||
index: c.commitData.ParentIndexes[i],
|
||||
commitData: parent,
|
||||
gci: c.gci,
|
||||
}, nil
|
||||
}
|
||||
|
||||
func (c *graphCommitNode) ParentHashes() []plumbing.Hash {
|
||||
return c.commitData.ParentHashes
|
||||
}
|
||||
|
||||
func (c *graphCommitNode) Generation() uint64 {
|
||||
// If the commit-graph file was generated with older Git version that
|
||||
// set the generation to zero for every commit the generation assumption
|
||||
// is still valid. It is just less useful.
|
||||
return uint64(c.commitData.Generation)
|
||||
}
|
||||
|
||||
func (c *graphCommitNode) Commit() (*object.Commit, error) {
|
||||
return object.GetCommit(c.gci.s, c.hash)
|
||||
}
|
||||
|
||||
func (c *graphCommitNode) String() string {
|
||||
return fmt.Sprintf(
|
||||
"%s %s\nDate: %s",
|
||||
plumbing.CommitObject, c.ID(),
|
||||
c.CommitTime().Format(object.DateFormat),
|
||||
)
|
||||
}
|
||||
package commitgraph
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"time"
|
||||
|
||||
"github.com/go-git/go-git/v5/plumbing"
|
||||
"github.com/go-git/go-git/v5/plumbing/format/commitgraph"
|
||||
"github.com/go-git/go-git/v5/plumbing/object"
|
||||
"github.com/go-git/go-git/v5/plumbing/storer"
|
||||
)
|
||||
|
||||
// graphCommitNode is a reduced representation of Commit as presented in the commit
|
||||
// graph file (commitgraph.Node). It is merely useful as an optimization for walking
|
||||
// the commit graphs.
|
||||
//
|
||||
// graphCommitNode implements the CommitNode interface.
|
||||
type graphCommitNode struct {
|
||||
// Hash for the Commit object
|
||||
hash plumbing.Hash
|
||||
// Index of the node in the commit graph file
|
||||
index int
|
||||
|
||||
commitData *commitgraph.CommitData
|
||||
gci *graphCommitNodeIndex
|
||||
}
|
||||
|
||||
// graphCommitNodeIndex is an index that can load CommitNode objects from both the commit
|
||||
// graph files and the object store.
|
||||
//
|
||||
// graphCommitNodeIndex implements the CommitNodeIndex interface
|
||||
type graphCommitNodeIndex struct {
|
||||
commitGraph commitgraph.Index
|
||||
s storer.EncodedObjectStorer
|
||||
}
|
||||
|
||||
// NewGraphCommitNodeIndex returns CommitNodeIndex implementation that uses commit-graph
|
||||
// files as backing storage and falls back to object storage when necessary
|
||||
func NewGraphCommitNodeIndex(commitGraph commitgraph.Index, s storer.EncodedObjectStorer) CommitNodeIndex {
|
||||
return &graphCommitNodeIndex{commitGraph, s}
|
||||
}
|
||||
|
||||
func (gci *graphCommitNodeIndex) Get(hash plumbing.Hash) (CommitNode, error) {
|
||||
// Check the commit graph first
|
||||
parentIndex, err := gci.commitGraph.GetIndexByHash(hash)
|
||||
if err == nil {
|
||||
parent, err := gci.commitGraph.GetCommitDataByIndex(parentIndex)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return &graphCommitNode{
|
||||
hash: hash,
|
||||
index: parentIndex,
|
||||
commitData: parent,
|
||||
gci: gci,
|
||||
}, nil
|
||||
}
|
||||
|
||||
// Fallback to loading full commit object
|
||||
commit, err := object.GetCommit(gci.s, hash)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return &objectCommitNode{
|
||||
nodeIndex: gci,
|
||||
commit: commit,
|
||||
}, nil
|
||||
}
|
||||
|
||||
func (c *graphCommitNode) ID() plumbing.Hash {
|
||||
return c.hash
|
||||
}
|
||||
|
||||
func (c *graphCommitNode) Tree() (*object.Tree, error) {
|
||||
return object.GetTree(c.gci.s, c.commitData.TreeHash)
|
||||
}
|
||||
|
||||
func (c *graphCommitNode) CommitTime() time.Time {
|
||||
return c.commitData.When
|
||||
}
|
||||
|
||||
func (c *graphCommitNode) NumParents() int {
|
||||
return len(c.commitData.ParentIndexes)
|
||||
}
|
||||
|
||||
func (c *graphCommitNode) ParentNodes() CommitNodeIter {
|
||||
return newParentgraphCommitNodeIter(c)
|
||||
}
|
||||
|
||||
func (c *graphCommitNode) ParentNode(i int) (CommitNode, error) {
|
||||
if i < 0 || i >= len(c.commitData.ParentIndexes) {
|
||||
return nil, object.ErrParentNotFound
|
||||
}
|
||||
|
||||
parent, err := c.gci.commitGraph.GetCommitDataByIndex(c.commitData.ParentIndexes[i])
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return &graphCommitNode{
|
||||
hash: c.commitData.ParentHashes[i],
|
||||
index: c.commitData.ParentIndexes[i],
|
||||
commitData: parent,
|
||||
gci: c.gci,
|
||||
}, nil
|
||||
}
|
||||
|
||||
func (c *graphCommitNode) ParentHashes() []plumbing.Hash {
|
||||
return c.commitData.ParentHashes
|
||||
}
|
||||
|
||||
func (c *graphCommitNode) Generation() uint64 {
|
||||
// If the commit-graph file was generated with older Git version that
|
||||
// set the generation to zero for every commit the generation assumption
|
||||
// is still valid. It is just less useful.
|
||||
return uint64(c.commitData.Generation)
|
||||
}
|
||||
|
||||
func (c *graphCommitNode) Commit() (*object.Commit, error) {
|
||||
return object.GetCommit(c.gci.s, c.hash)
|
||||
}
|
||||
|
||||
func (c *graphCommitNode) String() string {
|
||||
return fmt.Sprintf(
|
||||
"%s %s\nDate: %s",
|
||||
plumbing.CommitObject, c.ID(),
|
||||
c.CommitTime().Format(object.DateFormat),
|
||||
)
|
||||
}
|
||||
|
|
|
|||
180
vendor/github.com/go-git/go-git/v5/plumbing/object/commitgraph/commitnode_object.go
generated
vendored
180
vendor/github.com/go-git/go-git/v5/plumbing/object/commitgraph/commitnode_object.go
generated
vendored
|
|
@ -1,90 +1,90 @@
|
|||
package commitgraph
|
||||
|
||||
import (
|
||||
"math"
|
||||
"time"
|
||||
|
||||
"github.com/go-git/go-git/v5/plumbing"
|
||||
"github.com/go-git/go-git/v5/plumbing/object"
|
||||
"github.com/go-git/go-git/v5/plumbing/storer"
|
||||
)
|
||||
|
||||
// objectCommitNode is a representation of Commit as presented in the GIT object format.
|
||||
//
|
||||
// objectCommitNode implements the CommitNode interface.
|
||||
type objectCommitNode struct {
|
||||
nodeIndex CommitNodeIndex
|
||||
commit *object.Commit
|
||||
}
|
||||
|
||||
// NewObjectCommitNodeIndex returns CommitNodeIndex implementation that uses
|
||||
// only object storage to load the nodes
|
||||
func NewObjectCommitNodeIndex(s storer.EncodedObjectStorer) CommitNodeIndex {
|
||||
return &objectCommitNodeIndex{s}
|
||||
}
|
||||
|
||||
func (oci *objectCommitNodeIndex) Get(hash plumbing.Hash) (CommitNode, error) {
|
||||
commit, err := object.GetCommit(oci.s, hash)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return &objectCommitNode{
|
||||
nodeIndex: oci,
|
||||
commit: commit,
|
||||
}, nil
|
||||
}
|
||||
|
||||
// objectCommitNodeIndex is an index that can load CommitNode objects only from the
|
||||
// object store.
|
||||
//
|
||||
// objectCommitNodeIndex implements the CommitNodeIndex interface
|
||||
type objectCommitNodeIndex struct {
|
||||
s storer.EncodedObjectStorer
|
||||
}
|
||||
|
||||
func (c *objectCommitNode) CommitTime() time.Time {
|
||||
return c.commit.Committer.When
|
||||
}
|
||||
|
||||
func (c *objectCommitNode) ID() plumbing.Hash {
|
||||
return c.commit.ID()
|
||||
}
|
||||
|
||||
func (c *objectCommitNode) Tree() (*object.Tree, error) {
|
||||
return c.commit.Tree()
|
||||
}
|
||||
|
||||
func (c *objectCommitNode) NumParents() int {
|
||||
return c.commit.NumParents()
|
||||
}
|
||||
|
||||
func (c *objectCommitNode) ParentNodes() CommitNodeIter {
|
||||
return newParentgraphCommitNodeIter(c)
|
||||
}
|
||||
|
||||
func (c *objectCommitNode) ParentNode(i int) (CommitNode, error) {
|
||||
if i < 0 || i >= len(c.commit.ParentHashes) {
|
||||
return nil, object.ErrParentNotFound
|
||||
}
|
||||
|
||||
// Note: It's necessary to go through CommitNodeIndex here to ensure
|
||||
// that if the commit-graph file covers only part of the history we
|
||||
// start using it when that part is reached.
|
||||
return c.nodeIndex.Get(c.commit.ParentHashes[i])
|
||||
}
|
||||
|
||||
func (c *objectCommitNode) ParentHashes() []plumbing.Hash {
|
||||
return c.commit.ParentHashes
|
||||
}
|
||||
|
||||
func (c *objectCommitNode) Generation() uint64 {
|
||||
// Commit nodes representing objects outside of the commit graph can never
|
||||
// be reached by objects from the commit-graph thus we return the highest
|
||||
// possible value.
|
||||
return math.MaxUint64
|
||||
}
|
||||
|
||||
func (c *objectCommitNode) Commit() (*object.Commit, error) {
|
||||
return c.commit, nil
|
||||
}
|
||||
package commitgraph
|
||||
|
||||
import (
|
||||
"math"
|
||||
"time"
|
||||
|
||||
"github.com/go-git/go-git/v5/plumbing"
|
||||
"github.com/go-git/go-git/v5/plumbing/object"
|
||||
"github.com/go-git/go-git/v5/plumbing/storer"
|
||||
)
|
||||
|
||||
// objectCommitNode is a representation of Commit as presented in the GIT object format.
|
||||
//
|
||||
// objectCommitNode implements the CommitNode interface.
|
||||
type objectCommitNode struct {
|
||||
nodeIndex CommitNodeIndex
|
||||
commit *object.Commit
|
||||
}
|
||||
|
||||
// NewObjectCommitNodeIndex returns CommitNodeIndex implementation that uses
|
||||
// only object storage to load the nodes
|
||||
func NewObjectCommitNodeIndex(s storer.EncodedObjectStorer) CommitNodeIndex {
|
||||
return &objectCommitNodeIndex{s}
|
||||
}
|
||||
|
||||
func (oci *objectCommitNodeIndex) Get(hash plumbing.Hash) (CommitNode, error) {
|
||||
commit, err := object.GetCommit(oci.s, hash)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return &objectCommitNode{
|
||||
nodeIndex: oci,
|
||||
commit: commit,
|
||||
}, nil
|
||||
}
|
||||
|
||||
// objectCommitNodeIndex is an index that can load CommitNode objects only from the
|
||||
// object store.
|
||||
//
|
||||
// objectCommitNodeIndex implements the CommitNodeIndex interface
|
||||
type objectCommitNodeIndex struct {
|
||||
s storer.EncodedObjectStorer
|
||||
}
|
||||
|
||||
func (c *objectCommitNode) CommitTime() time.Time {
|
||||
return c.commit.Committer.When
|
||||
}
|
||||
|
||||
func (c *objectCommitNode) ID() plumbing.Hash {
|
||||
return c.commit.ID()
|
||||
}
|
||||
|
||||
func (c *objectCommitNode) Tree() (*object.Tree, error) {
|
||||
return c.commit.Tree()
|
||||
}
|
||||
|
||||
func (c *objectCommitNode) NumParents() int {
|
||||
return c.commit.NumParents()
|
||||
}
|
||||
|
||||
func (c *objectCommitNode) ParentNodes() CommitNodeIter {
|
||||
return newParentgraphCommitNodeIter(c)
|
||||
}
|
||||
|
||||
func (c *objectCommitNode) ParentNode(i int) (CommitNode, error) {
|
||||
if i < 0 || i >= len(c.commit.ParentHashes) {
|
||||
return nil, object.ErrParentNotFound
|
||||
}
|
||||
|
||||
// Note: It's necessary to go through CommitNodeIndex here to ensure
|
||||
// that if the commit-graph file covers only part of the history we
|
||||
// start using it when that part is reached.
|
||||
return c.nodeIndex.Get(c.commit.ParentHashes[i])
|
||||
}
|
||||
|
||||
func (c *objectCommitNode) ParentHashes() []plumbing.Hash {
|
||||
return c.commit.ParentHashes
|
||||
}
|
||||
|
||||
func (c *objectCommitNode) Generation() uint64 {
|
||||
// Commit nodes representing objects outside of the commit graph can never
|
||||
// be reached by objects from the commit-graph thus we return the highest
|
||||
// possible value.
|
||||
return math.MaxUint64
|
||||
}
|
||||
|
||||
func (c *objectCommitNode) Commit() (*object.Commit, error) {
|
||||
return c.commit, nil
|
||||
}
|
||||
|
|
|
|||
210
vendor/github.com/go-git/go-git/v5/plumbing/object/commitgraph/commitnode_walker_ctime.go
generated
vendored
210
vendor/github.com/go-git/go-git/v5/plumbing/object/commitgraph/commitnode_walker_ctime.go
generated
vendored
|
|
@ -1,105 +1,105 @@
|
|||
package commitgraph
|
||||
|
||||
import (
|
||||
"io"
|
||||
|
||||
"github.com/emirpasic/gods/trees/binaryheap"
|
||||
|
||||
"github.com/go-git/go-git/v5/plumbing"
|
||||
"github.com/go-git/go-git/v5/plumbing/storer"
|
||||
)
|
||||
|
||||
type commitNodeIteratorByCTime struct {
|
||||
heap *binaryheap.Heap
|
||||
seenExternal map[plumbing.Hash]bool
|
||||
seen map[plumbing.Hash]bool
|
||||
}
|
||||
|
||||
// NewCommitNodeIterCTime returns a CommitNodeIter that walks the commit history,
|
||||
// starting at the given commit and visiting its parents while preserving Committer Time order.
|
||||
// this appears to be the closest order to `git log`
|
||||
// The given callback will be called for each visited commit. Each commit will
|
||||
// be visited only once. If the callback returns an error, walking will stop
|
||||
// and will return the error. Other errors might be returned if the history
|
||||
// cannot be traversed (e.g. missing objects). Ignore allows to skip some
|
||||
// commits from being iterated.
|
||||
func NewCommitNodeIterCTime(
|
||||
c CommitNode,
|
||||
seenExternal map[plumbing.Hash]bool,
|
||||
ignore []plumbing.Hash,
|
||||
) CommitNodeIter {
|
||||
seen := make(map[plumbing.Hash]bool)
|
||||
for _, h := range ignore {
|
||||
seen[h] = true
|
||||
}
|
||||
|
||||
heap := binaryheap.NewWith(func(a, b interface{}) int {
|
||||
if a.(CommitNode).CommitTime().Before(b.(CommitNode).CommitTime()) {
|
||||
return 1
|
||||
}
|
||||
return -1
|
||||
})
|
||||
|
||||
heap.Push(c)
|
||||
|
||||
return &commitNodeIteratorByCTime{
|
||||
heap: heap,
|
||||
seenExternal: seenExternal,
|
||||
seen: seen,
|
||||
}
|
||||
}
|
||||
|
||||
func (w *commitNodeIteratorByCTime) Next() (CommitNode, error) {
|
||||
var c CommitNode
|
||||
for {
|
||||
cIn, ok := w.heap.Pop()
|
||||
if !ok {
|
||||
return nil, io.EOF
|
||||
}
|
||||
c = cIn.(CommitNode)
|
||||
cID := c.ID()
|
||||
|
||||
if w.seen[cID] || w.seenExternal[cID] {
|
||||
continue
|
||||
}
|
||||
|
||||
w.seen[cID] = true
|
||||
|
||||
for i, h := range c.ParentHashes() {
|
||||
if w.seen[h] || w.seenExternal[h] {
|
||||
continue
|
||||
}
|
||||
pc, err := c.ParentNode(i)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
w.heap.Push(pc)
|
||||
}
|
||||
|
||||
return c, nil
|
||||
}
|
||||
}
|
||||
|
||||
func (w *commitNodeIteratorByCTime) ForEach(cb func(CommitNode) error) error {
|
||||
for {
|
||||
c, err := w.Next()
|
||||
if err == io.EOF {
|
||||
break
|
||||
}
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
err = cb(c)
|
||||
if err == storer.ErrStop {
|
||||
break
|
||||
}
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (w *commitNodeIteratorByCTime) Close() {}
|
||||
package commitgraph
|
||||
|
||||
import (
|
||||
"io"
|
||||
|
||||
"github.com/emirpasic/gods/trees/binaryheap"
|
||||
|
||||
"github.com/go-git/go-git/v5/plumbing"
|
||||
"github.com/go-git/go-git/v5/plumbing/storer"
|
||||
)
|
||||
|
||||
type commitNodeIteratorByCTime struct {
|
||||
heap *binaryheap.Heap
|
||||
seenExternal map[plumbing.Hash]bool
|
||||
seen map[plumbing.Hash]bool
|
||||
}
|
||||
|
||||
// NewCommitNodeIterCTime returns a CommitNodeIter that walks the commit history,
|
||||
// starting at the given commit and visiting its parents while preserving Committer Time order.
|
||||
// this appears to be the closest order to `git log`
|
||||
// The given callback will be called for each visited commit. Each commit will
|
||||
// be visited only once. If the callback returns an error, walking will stop
|
||||
// and will return the error. Other errors might be returned if the history
|
||||
// cannot be traversed (e.g. missing objects). Ignore allows to skip some
|
||||
// commits from being iterated.
|
||||
func NewCommitNodeIterCTime(
|
||||
c CommitNode,
|
||||
seenExternal map[plumbing.Hash]bool,
|
||||
ignore []plumbing.Hash,
|
||||
) CommitNodeIter {
|
||||
seen := make(map[plumbing.Hash]bool)
|
||||
for _, h := range ignore {
|
||||
seen[h] = true
|
||||
}
|
||||
|
||||
heap := binaryheap.NewWith(func(a, b interface{}) int {
|
||||
if a.(CommitNode).CommitTime().Before(b.(CommitNode).CommitTime()) {
|
||||
return 1
|
||||
}
|
||||
return -1
|
||||
})
|
||||
|
||||
heap.Push(c)
|
||||
|
||||
return &commitNodeIteratorByCTime{
|
||||
heap: heap,
|
||||
seenExternal: seenExternal,
|
||||
seen: seen,
|
||||
}
|
||||
}
|
||||
|
||||
func (w *commitNodeIteratorByCTime) Next() (CommitNode, error) {
|
||||
var c CommitNode
|
||||
for {
|
||||
cIn, ok := w.heap.Pop()
|
||||
if !ok {
|
||||
return nil, io.EOF
|
||||
}
|
||||
c = cIn.(CommitNode)
|
||||
cID := c.ID()
|
||||
|
||||
if w.seen[cID] || w.seenExternal[cID] {
|
||||
continue
|
||||
}
|
||||
|
||||
w.seen[cID] = true
|
||||
|
||||
for i, h := range c.ParentHashes() {
|
||||
if w.seen[h] || w.seenExternal[h] {
|
||||
continue
|
||||
}
|
||||
pc, err := c.ParentNode(i)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
w.heap.Push(pc)
|
||||
}
|
||||
|
||||
return c, nil
|
||||
}
|
||||
}
|
||||
|
||||
func (w *commitNodeIteratorByCTime) ForEach(cb func(CommitNode) error) error {
|
||||
for {
|
||||
c, err := w.Next()
|
||||
if err == io.EOF {
|
||||
break
|
||||
}
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
err = cb(c)
|
||||
if err == storer.ErrStop {
|
||||
break
|
||||
}
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (w *commitNodeIteratorByCTime) Close() {}
|
||||
|
|
|
|||
|
|
@ -1,22 +1,22 @@
|
|||
Copyright (c) 2013 Caleb Spare
|
||||
|
||||
MIT License
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining
|
||||
a copy of this software and associated documentation files (the
|
||||
"Software"), to deal in the Software without restriction, including
|
||||
without limitation the rights to use, copy, modify, merge, publish,
|
||||
distribute, sublicense, and/or sell copies of the Software, and to
|
||||
permit persons to whom the Software is furnished to do so, subject to
|
||||
the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be
|
||||
included in all copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
||||
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
||||
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
||||
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
Copyright (c) 2013 Caleb Spare
|
||||
|
||||
MIT License
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining
|
||||
a copy of this software and associated documentation files (the
|
||||
"Software"), to deal in the Software without restriction, including
|
||||
without limitation the rights to use, copy, modify, merge, publish,
|
||||
distribute, sublicense, and/or sell copies of the Software, and to
|
||||
permit persons to whom the Software is furnished to do so, subject to
|
||||
the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be
|
||||
included in all copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
||||
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
||||
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
||||
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
|
|
|
|||
Loading…
Reference in New Issue