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150 lines
3.3 KiB
150 lines
3.3 KiB
// Copyright 2016 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package gitgraph
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import (
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"bufio"
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"bytes"
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"context"
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"fmt"
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"os"
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"strings"
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"code.gitea.io/gitea/modules/git"
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"code.gitea.io/gitea/modules/setting"
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)
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// GraphItem represent one commit, or one relation in timeline
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type GraphItem struct {
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GraphAcii string
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Relation string
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Branch string
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Rev string
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Date string
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Author string
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AuthorEmail string
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ShortRev string
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Subject string
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OnlyRelation bool
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}
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// GraphItems is a list of commits from all branches
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type GraphItems []GraphItem
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// GetCommitGraph return a list of commit (GraphItems) from all branches
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func GetCommitGraph(r *git.Repository, page int) (GraphItems, error) {
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format := "DATA:|%d|%H|%ad|%an|%ae|%h|%s"
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if page == 0 {
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page = 1
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}
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graphCmd := git.NewCommand("log")
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graphCmd.AddArguments("--graph",
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"--date-order",
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"--all",
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"-C",
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"-M",
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fmt.Sprintf("-n %d", setting.UI.GraphMaxCommitNum*page),
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"--date=iso",
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fmt.Sprintf("--pretty=format:%s", format),
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)
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commitGraph := make([]GraphItem, 0, 100)
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stderr := new(strings.Builder)
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stdoutReader, stdoutWriter, err := os.Pipe()
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if err != nil {
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return nil, err
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}
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commitsToSkip := setting.UI.GraphMaxCommitNum * (page - 1)
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scanner := bufio.NewScanner(stdoutReader)
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if err := graphCmd.RunInDirTimeoutEnvFullPipelineFunc(nil, -1, r.Path, stdoutWriter, stderr, nil, func(ctx context.Context, cancel context.CancelFunc) error {
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_ = stdoutWriter.Close()
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defer stdoutReader.Close()
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for commitsToSkip > 0 && scanner.Scan() {
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line := scanner.Bytes()
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dataIdx := bytes.Index(line, []byte("DATA:"))
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starIdx := bytes.IndexByte(line, '*')
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if starIdx >= 0 && starIdx < dataIdx {
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commitsToSkip--
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}
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}
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// Skip initial non-commit lines
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for scanner.Scan() {
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if bytes.IndexByte(scanner.Bytes(), '*') >= 0 {
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line := scanner.Text()
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graphItem, err := graphItemFromString(line, r)
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if err != nil {
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cancel()
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return err
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}
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commitGraph = append(commitGraph, graphItem)
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break
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}
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}
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for scanner.Scan() {
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line := scanner.Text()
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graphItem, err := graphItemFromString(line, r)
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if err != nil {
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cancel()
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return err
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}
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commitGraph = append(commitGraph, graphItem)
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}
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return scanner.Err()
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}); err != nil {
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return commitGraph, err
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}
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return commitGraph, nil
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}
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func graphItemFromString(s string, r *git.Repository) (GraphItem, error) {
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var ascii string
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var data = "|||||||"
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lines := strings.SplitN(s, "DATA:", 2)
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switch len(lines) {
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case 1:
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ascii = lines[0]
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case 2:
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ascii = lines[0]
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data = lines[1]
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default:
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return GraphItem{}, fmt.Errorf("Failed parsing grap line:%s. Expect 1 or two fields", s)
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}
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rows := strings.SplitN(data, "|", 8)
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if len(rows) < 8 {
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return GraphItem{}, fmt.Errorf("Failed parsing grap line:%s - Should containt 8 datafields", s)
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}
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/* // see format in getCommitGraph()
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0 Relation string
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1 Branch string
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2 Rev string
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3 Date string
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4 Author string
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5 AuthorEmail string
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6 ShortRev string
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7 Subject string
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*/
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gi := GraphItem{ascii,
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rows[0],
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rows[1],
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rows[2],
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rows[3],
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rows[4],
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rows[5],
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rows[6],
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rows[7],
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len(rows[2]) == 0, // no commits referred to, only relation in current line.
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}
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return gi, nil
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}
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