mirror of
https://gitee.com/gitea/gitea
synced 2025-11-04 16:40:24 +08:00
e65cfabda7
Breaking the pipe is a valid way of killing a piped command and any error from a broken cat-file batch command should be passed back up to the writer any way therefore specifically logging it is unnecessary. Signed-off-by: Andrew Thornton <art27@cantab.net>
77 lines
1.7 KiB
Go
77 lines
1.7 KiB
Go
// 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
|
|
}
|