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
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
package git
import (
"bytes"
"errors"
"fmt"
"io"
"strconv"
"time"
"gopkg.in/src-d/go-git.v4/plumbing"
"gopkg.in/src-d/go-git.v4/plumbing/storer"
)
// ErrUnsupportedObject trigger when a non-supported object is being decoded.
var ErrUnsupportedObject = errors.New("unsupported object type")
// Object is a generic representation of any git object. It is implemented by
// Commit, Tree, Blob and Tag, and includes the functions that are common to
// them.
//
// Object is returned when an object could of any type. It is frequently used
// with a type cast to acquire the specific type of object:
//
// func process(obj Object) {
// switch o := obj.(type) {
// case *Commit:
// // o is a Commit
// case *Tree:
// // o is a Tree
// case *Blob:
// // o is a Blob
// case *Tag:
// // o is a Tag
// }
// }
//
// This interface is intentionally different from plumbing.Object, which is a lower
// level interface used by storage implementations to read and write objects.
type Object interface {
ID() plumbing.Hash
Type() plumbing.ObjectType
Decode(plumbing.Object) error
Encode(plumbing.Object) error
}
// Signature represents an action signed by a person
type Signature struct {
Name string
Email string
When time.Time
}
// Decode decodes a byte slice into a signature
func (s *Signature) Decode(b []byte) {
open := bytes.IndexByte(b, '<')
close := bytes.IndexByte(b, '>')
if open == -1 || close == -1 {
return
}
s.Name = string(bytes.Trim(b[:open], " "))
s.Email = string(b[open+1 : close])
hasTime := close+2 < len(b)
if hasTime {
s.decodeTimeAndTimeZone(b[close+2:])
}
}
// Encode encodes a Signature into a writer.
func (s *Signature) Encode(w io.Writer) error {
if _, err := fmt.Fprintf(w, "%s <%s> ", s.Name, s.Email); err != nil {
return err
}
if err := s.encodeTimeAndTimeZone(w); err != nil {
return err
}
return nil
}
var timeZoneLength = 5
func (s *Signature) decodeTimeAndTimeZone(b []byte) {
space := bytes.IndexByte(b, ' ')
if space == -1 {
space = len(b)
}
ts, err := strconv.ParseInt(string(b[:space]), 10, 64)
if err != nil {
return
}
s.When = time.Unix(ts, 0).In(time.UTC)
var tzStart = space + 1
if tzStart >= len(b) || tzStart+timeZoneLength > len(b) {
return
}
tl, err := time.Parse("-0700", string(b[tzStart:tzStart+timeZoneLength]))
if err != nil {
return
}
s.When = s.When.In(tl.Location())
}
func (s *Signature) encodeTimeAndTimeZone(w io.Writer) error {
_, err := fmt.Fprintf(w, "%d %s", s.When.Unix(), s.When.Format("-0700"))
return err
}
func (s *Signature) String() string {
return fmt.Sprintf("%s <%s>", s.Name, s.Email)
}
// ObjectIter provides an iterator for a set of objects.
type ObjectIter struct {
storer.ObjectIter
r *Repository
}
// NewObjectIter returns a ObjectIter for the given repository and underlying
// object iterator.
func NewObjectIter(r *Repository, iter storer.ObjectIter) *ObjectIter {
return &ObjectIter{iter, r}
}
// Next moves the iterator to the next object and returns a pointer to it. If it
// has reached the end of the set it will return io.EOF.
func (iter *ObjectIter) Next() (Object, error) {
for {
obj, err := iter.ObjectIter.Next()
if err != nil {
return nil, err
}
o, err := iter.toObject(obj)
if err == plumbing.ErrInvalidType {
continue
}
if err != nil {
return nil, err
}
return o, nil
}
}
// ForEach call the cb function for each object contained on this iter until
// an error happens or the end of the iter is reached. If ErrStop is sent
// the iteration is stop but no error is returned. The iterator is closed.
func (iter *ObjectIter) ForEach(cb func(Object) error) error {
return iter.ObjectIter.ForEach(func(obj plumbing.Object) error {
o, err := iter.toObject(obj)
if err == plumbing.ErrInvalidType {
return nil
}
if err != nil {
return err
}
return cb(o)
})
}
func (iter *ObjectIter) toObject(obj plumbing.Object) (Object, error) {
switch obj.Type() {
case plumbing.BlobObject:
blob := &Blob{}
return blob, blob.Decode(obj)
case plumbing.TreeObject:
tree := &Tree{r: iter.r}
return tree, tree.Decode(obj)
case plumbing.CommitObject:
commit := &Commit{}
return commit, commit.Decode(obj)
case plumbing.TagObject:
tag := &Tag{}
return tag, tag.Decode(obj)
default:
return nil, plumbing.ErrInvalidType
}
}
|
