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
122
123
124
125
126
127
128
129
|
package git
import (
"bufio"
"bytes"
"fmt"
"io"
"gopkg.in/src-d/go-git.v2/core"
)
type Hash core.Hash
// Commit points to a single tree, marking it as what the project looked like
// at a certain point in time. It contains meta-information about that point
// in time, such as a timestamp, the author of the changes since the last
// commit, a pointer to the previous commit(s), etc.
// http://schacon.github.io/gitbook/1_the_git_object_model.html
type Commit struct {
Hash core.Hash
Author Signature
Committer Signature
Message string
tree core.Hash
parents []core.Hash
r *Repository
}
func (c *Commit) Tree() *Tree {
tree, _ := c.r.Tree(c.tree)
return tree
}
func (c *Commit) Parents() *CommitIter {
i := NewCommitIter(c.r)
go func() {
defer i.Close()
for _, hash := range c.parents {
obj, _ := c.r.Storage.Get(hash)
i.Add(obj)
}
}()
return i
}
// Decode transform an core.Object into a Blob struct
func (c *Commit) Decode(o core.Object) error {
c.Hash = o.Hash()
r := bufio.NewReader(o.Reader())
var message bool
for {
line, err := r.ReadSlice('\n')
if err != nil && err != io.EOF {
return err
}
line = bytes.TrimSpace(line)
if !message {
if len(line) == 0 {
message = true
continue
}
split := bytes.SplitN(line, []byte{' '}, 2)
switch string(split[0]) {
case "tree":
c.tree = core.NewHash(string(split[1]))
case "parent":
c.parents = append(c.parents, core.NewHash(string(split[1])))
case "author":
c.Author.Decode(split[1])
case "committer":
c.Committer.Decode(split[1])
}
} else {
c.Message += string(line) + "\n"
}
if err == io.EOF {
return nil
}
}
}
func (c *Commit) String() string {
return fmt.Sprintf(
"%s %s\nAuthor: %s\nDate: %s\n",
core.CommitObject, c.Hash, c.Author.String(), c.Author.When,
)
}
type CommitIter struct {
iter
}
func NewCommitIter(r *Repository) *CommitIter {
return &CommitIter{newIter(r)}
}
func (i *CommitIter) Next() (*Commit, error) {
obj := <-i.ch
if obj == nil {
return nil, io.EOF
}
commit := &Commit{r: i.r}
return commit, commit.Decode(obj)
}
type iter struct {
ch chan core.Object
r *Repository
}
func newIter(r *Repository) iter {
ch := make(chan core.Object, 1)
return iter{ch, r}
}
func (i *iter) Add(o core.Object) {
i.ch <- o
}
func (i *iter) Close() {
close(i.ch)
}
|
