1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
package object
import (
"fmt"
"time"
"gopkg.in/src-d/go-git.v4/plumbing"
"gopkg.in/src-d/go-git.v4/plumbing/format/commitgraph"
"gopkg.in/src-d/go-git.v4/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
node *commitgraph.Node
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
}
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.GetNodeByIndex(parentIndex)
if err != nil {
return nil, err
}
return &graphCommitNode{
hash: hash,
index: parentIndex,
node: parent,
gci: gci,
}, nil
}
// Fallback to loading full commit object
commit, err := 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() (*Tree, error) {
return GetTree(c.gci.s, c.node.TreeHash)
}
func (c *graphCommitNode) CommitTime() time.Time {
return c.node.When
}
func (c *graphCommitNode) NumParents() int {
return len(c.node.ParentIndexes)
}
func (c *graphCommitNode) ParentNodes() CommitNodeIter {
return newParentgraphCommitNodeIter(c)
}
func (c *graphCommitNode) ParentNode(i int) (CommitNode, error) {
if i < 0 || i >= len(c.node.ParentIndexes) {
return nil, ErrParentNotFound
}
parent, err := c.gci.commitGraph.GetNodeByIndex(c.node.ParentIndexes[i])
if err != nil {
return nil, err
}
return &graphCommitNode{
hash: c.node.ParentHashes[i],
index: c.node.ParentIndexes[i],
node: parent,
gci: c.gci,
}, nil
}
func (c *graphCommitNode) ParentHashes() []plumbing.Hash {
return c.node.ParentHashes
}
func (c *graphCommitNode) Commit() (*Commit, error) {
return 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(DateFormat),
)
}
|
