Ensure that git commit tree continues properly over the page (#12142)

* Ensure that git commit tree continues properly over the page

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Avoid generating strings when skipping

Signed-off-by: Andrew Thornton <art27@cantab.net>

* skip initial non-commit-lines

Signed-off-by: Andrew Thornton <art27@cantab.net>

Co-authored-by: Lauris BH <lauris@nix.lv>
This commit is contained in:
zeripath 2020-07-16 20:24:36 +01:00 committed by GitHub
parent 07c4ed4cda
commit 3bcc6e7a9e
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@ -5,7 +5,11 @@
package gitgraph
import (
"bufio"
"bytes"
"context"
"fmt"
"os"
"strings"
"code.gitea.io/gitea/modules/git"
@ -31,37 +35,72 @@ type GraphItems []GraphItem
// GetCommitGraph return a list of commit (GraphItems) from all branches
func GetCommitGraph(r *git.Repository, page int) (GraphItems, error) {
var CommitGraph []GraphItem
format := "DATA:|%d|%H|%ad|%an|%ae|%h|%s"
if page == 0 {
page = 1
}
graphCmd := git.NewCommand("log")
graphCmd.AddArguments("--graph",
"--date-order",
"--all",
"-C",
"-M",
fmt.Sprintf("-n %d", setting.UI.GraphMaxCommitNum),
fmt.Sprintf("--skip=%d", setting.UI.GraphMaxCommitNum*(page-1)),
fmt.Sprintf("-n %d", setting.UI.GraphMaxCommitNum*page),
"--date=iso",
fmt.Sprintf("--pretty=format:%s", format),
)
graph, err := graphCmd.RunInDir(r.Path)
commitGraph := make([]GraphItem, 0, 100)
stderr := new(strings.Builder)
stdoutReader, stdoutWriter, err := os.Pipe()
if err != nil {
return CommitGraph, err
return nil, err
}
commitsToSkip := setting.UI.GraphMaxCommitNum * (page - 1)
scanner := bufio.NewScanner(stdoutReader)
if err := graphCmd.RunInDirTimeoutEnvFullPipelineFunc(nil, -1, r.Path, stdoutWriter, stderr, nil, func(ctx context.Context, cancel context.CancelFunc) error {
_ = stdoutWriter.Close()
defer stdoutReader.Close()
for commitsToSkip > 0 && scanner.Scan() {
line := scanner.Bytes()
dataIdx := bytes.Index(line, []byte("DATA:"))
starIdx := bytes.IndexByte(line, '*')
if starIdx >= 0 && starIdx < dataIdx {
commitsToSkip--
}
}
// Skip initial non-commit lines
for scanner.Scan() {
if bytes.IndexByte(scanner.Bytes(), '*') >= 0 {
line := scanner.Text()
graphItem, err := graphItemFromString(line, r)
if err != nil {
cancel()
return err
}
commitGraph = append(commitGraph, graphItem)
break
}
}
CommitGraph = make([]GraphItem, 0, 100)
for _, s := range strings.Split(graph, "\n") {
GraphItem, err := graphItemFromString(s, r)
for scanner.Scan() {
line := scanner.Text()
graphItem, err := graphItemFromString(line, r)
if err != nil {
return CommitGraph, err
cancel()
return err
}
CommitGraph = append(CommitGraph, GraphItem)
commitGraph = append(commitGraph, graphItem)
}
return scanner.Err()
}); err != nil {
return commitGraph, err
}
return CommitGraph, nil
return commitGraph, nil
}
func graphItemFromString(s string, r *git.Repository) (GraphItem, error) {