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
|
// Copyright 2020 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package git
import (
"bufio"
"bytes"
"io"
"strings"
"github.com/go-git/go-git/v5/plumbing"
)
// CommitFromReader will generate a Commit from a provided reader
// We will need this to interpret commits from cat-file
func CommitFromReader(gitRepo *Repository, sha plumbing.Hash, reader io.Reader) (*Commit, error) {
commit := &Commit{
ID: sha,
}
payloadSB := new(strings.Builder)
signatureSB := new(strings.Builder)
messageSB := new(strings.Builder)
message := false
pgpsig := false
scanner := bufio.NewScanner(reader)
// Split by '\n' but include the '\n'
scanner.Split(func(data []byte, atEOF bool) (advance int, token []byte, err error) {
if atEOF && len(data) == 0 {
return 0, nil, nil
}
if i := bytes.IndexByte(data, '\n'); i >= 0 {
// We have a full newline-terminated line.
return i + 1, data[0 : i+1], nil
}
// If we're at EOF, we have a final, non-terminated line. Return it.
if atEOF {
return len(data), data, nil
}
// Request more data.
return 0, nil, nil
})
for scanner.Scan() {
line := scanner.Bytes()
if pgpsig {
if len(line) > 0 && line[0] == ' ' {
_, _ = signatureSB.Write(line[1:])
continue
} else {
pgpsig = false
}
}
if !message {
// This is probably not correct but is copied from go-gits interpretation...
trimmed := bytes.TrimSpace(line)
if len(trimmed) == 0 {
message = true
_, _ = payloadSB.Write(line)
continue
}
split := bytes.SplitN(trimmed, []byte{' '}, 2)
var data []byte
if len(split) > 1 {
data = split[1]
}
switch string(split[0]) {
case "tree":
commit.Tree = *NewTree(gitRepo, plumbing.NewHash(string(data)))
_, _ = payloadSB.Write(line)
case "parent":
commit.Parents = append(commit.Parents, plumbing.NewHash(string(data)))
_, _ = payloadSB.Write(line)
case "author":
commit.Author = &Signature{}
commit.Author.Decode(data)
_, _ = payloadSB.Write(line)
case "committer":
commit.Committer = &Signature{}
commit.Committer.Decode(data)
_, _ = payloadSB.Write(line)
case "gpgsig":
_, _ = signatureSB.Write(data)
_ = signatureSB.WriteByte('\n')
pgpsig = true
}
} else {
_, _ = messageSB.Write(line)
}
}
commit.CommitMessage = messageSB.String()
_, _ = payloadSB.WriteString(commit.CommitMessage)
commit.Signature = &CommitGPGSignature{
Signature: signatureSB.String(),
Payload: payloadSB.String(),
}
if len(commit.Signature.Signature) == 0 {
commit.Signature = nil
}
return commit, scanner.Err()
}
|
