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Fix paging of file commit logs (#14831)

Unfortunately `git log revision ... --skip=x -- path` skips the number of commits
not the number of commits relating to the path.

This PR changes the function to have a reader that reads and skips the
necessary number of commits by hand instead.

Fix #8716

Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: 6543 <6543@obermui.de>
This commit is contained in:
zeripath 2021-03-04 00:48:19 +00:00 committed by GitHub
parent 0bdeb2b302
commit 59d1cc49f1
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 34 additions and 2 deletions

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@ -8,6 +8,8 @@ package git
import (
"bytes"
"container/list"
"io"
"io/ioutil"
"strconv"
"strings"
)
@ -232,8 +234,38 @@ func (repo *Repository) FileCommitsCount(revision, file string) (int64, error) {
// CommitsByFileAndRange return the commits according revison file and the page
func (repo *Repository) CommitsByFileAndRange(revision, file string, page int) (*list.List, error) {
stdout, err := NewCommand("log", revision, "--follow", "--skip="+strconv.Itoa((page-1)*50),
"--max-count="+strconv.Itoa(CommitsRangeSize), prettyLogFormat, "--", file).RunInDirBytes(repo.Path)
skip := (page - 1) * CommitsRangeSize
stdoutReader, stdoutWriter := io.Pipe()
defer func() {
_ = stdoutReader.Close()
_ = stdoutWriter.Close()
}()
go func() {
stderr := strings.Builder{}
err := NewCommand("log", revision, "--follow",
"--max-count="+strconv.Itoa(CommitsRangeSize*page),
prettyLogFormat, "--", file).
RunInDirPipeline(repo.Path, stdoutWriter, &stderr)
if err != nil {
_ = stdoutWriter.CloseWithError(ConcatenateError(err, (&stderr).String()))
} else {
_ = stdoutWriter.Close()
}
}()
if skip > 0 {
_, err := io.CopyN(ioutil.Discard, stdoutReader, int64(skip*41))
if err != nil {
if err == io.EOF {
return list.New(), nil
}
_ = stdoutReader.CloseWithError(err)
return nil, err
}
}
stdout, err := ioutil.ReadAll(stdoutReader)
if err != nil {
return nil, err
}