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
|
// 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.
// +build !gogit
package git
import (
"bufio"
"io"
"strconv"
"strings"
)
// Blob represents a Git object.
type Blob struct {
ID SHA1
gotSize bool
size int64
repoPath string
name string
}
// DataAsync gets a ReadCloser for the contents of a blob without reading it all.
// Calling the Close function on the result will discard all unread output.
func (b *Blob) DataAsync() (io.ReadCloser, error) {
stdoutReader, stdoutWriter := io.Pipe()
go func() {
stderr := &strings.Builder{}
err := NewCommand("cat-file", "--batch").RunInDirFullPipeline(b.repoPath, stdoutWriter, stderr, strings.NewReader(b.ID.String()+"\n"))
if err != nil {
err = ConcatenateError(err, stderr.String())
_ = stdoutWriter.CloseWithError(err)
} else {
_ = stdoutWriter.Close()
}
}()
bufReader := bufio.NewReader(stdoutReader)
_, _, size, err := ReadBatchLine(bufReader)
if err != nil {
stdoutReader.Close()
return nil, err
}
return &LimitedReaderCloser{
R: bufReader,
C: stdoutReader,
N: size,
}, nil
}
// Size returns the uncompressed size of the blob
func (b *Blob) Size() int64 {
if b.gotSize {
return b.size
}
size, err := NewCommand("cat-file", "-s", b.ID.String()).RunInDir(b.repoPath)
if err != nil {
log("error whilst reading size for %s in %s. Error: %v", b.ID.String(), b.repoPath, err)
return 0
}
b.size, err = strconv.ParseInt(size[:len(size)-1], 10, 64)
if err != nil {
log("error whilst parsing size %s for %s in %s. Error: %v", size, b.ID.String(), b.repoPath, err)
return 0
}
b.gotSize = true
return b.size
}
|
