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Fix lfs management find (#15537)

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Fix #15236

* Do not do 40byte conversion within ParseTreeLine
* Missed a to40ByteSHA

Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: Andrew Thornton <art27@cantab.net>
This commit is contained in:
Lunny Xiao 2021-04-22 00:31:59 +08:00 committed by GitHub
parent 9b8ffa1c7a
commit 2255afffad
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GPG key ID: 4AEE18F83AFDEB23
4 changed files with 7 additions and 4 deletions
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4
modules/git/batch_reader.go
View file

@ -149,10 +149,10 @@ headerLoop:
// constant hextable to help quickly convert between 20byte and 40byte hashes
const hextable = "0123456789abcdef"
// to40ByteSHA converts a 20-byte SHA in a 40-byte slice into a 40-byte sha in place
// To40ByteSHA converts a 20-byte SHA in a 40-byte slice into a 40-byte sha in place
// without allocations. This is at least 100x quicker that hex.EncodeToString
// NB This requires that sha is a 40-byte slice
func to40ByteSHA(sha []byte) []byte {
func To40ByteSHA(sha []byte) []byte {
for i := 19; i >= 0; i-- {
v := sha[i]
vhi, vlo := v>>4, v&0x0f

2
modules/git/commit_info_nogogit.go
View file

@ -300,7 +300,7 @@ revListLoop:
commits[0] = string(commitID)
}
}
treeID = to40ByteSHA(treeID)
treeID = To40ByteSHA(treeID)
_, err = batchStdinWriter.Write(treeID)
if err != nil {
return nil, err

3
modules/git/pipeline/lfs_nogogit.go
View file

@ -127,11 +127,12 @@ func FindLFSFile(repo *git.Repository, hash git.SHA1) ([]*LFSResult, error) {
case "tree":
var n int64
for n < size {
mode, fname, sha, count, err := git.ParseTreeLine(batchReader, modeBuf, fnameBuf, workingShaBuf)
mode, fname, sha20byte, count, err := git.ParseTreeLine(batchReader, modeBuf, fnameBuf, workingShaBuf)
if err != nil {
return nil, err
}
n += int64(count)
sha := git.To40ByteSHA(sha20byte)
if bytes.Equal(sha, []byte(hashStr)) {
result := LFSResult{
Name: curPath + string(fname),

2
modules/lfs/pointer_scanner_nogogit.go
View file

@ -11,6 +11,7 @@ import (
"context"
"io"
"strconv"
"strings"
"sync"
"code.gitea.io/gitea/modules/git"
@ -78,6 +79,7 @@ loop:
_ = catFileBatchReader.CloseWithError(err)
break
}
sha = strings.TrimSpace(sha)
// Throw away the blob
if _, err := bufferedReader.ReadString(' '); err != nil {
_ = catFileBatchReader.CloseWithError(err)