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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,196 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "io" | ||
|
|
||
| "github.com/charmbracelet/lipgloss" | ||
| "github.com/go-git/go-git/v5" | ||
| "github.com/go-git/go-git/v5/plumbing" | ||
| "github.com/go-git/go-git/v5/plumbing/object" | ||
| "github.com/muesli/gitty/vcs" | ||
| ) | ||
|
|
||
| const maxTrackStatCount = 99 | ||
|
|
||
| type trackStat struct { | ||
| Outdated bool | ||
| Ahead int | ||
| Behind int | ||
| } | ||
|
|
||
| func (s *trackStat) Render() string { | ||
| genericStyle := lipgloss.NewStyle(). | ||
| Foreground(lipgloss.Color(theme.colorGray)) | ||
| outdatedStyle := lipgloss.NewStyle(). | ||
| Foreground(lipgloss.Color(theme.colorRed)) | ||
| remoteStyle := lipgloss.NewStyle(). | ||
| Foreground(lipgloss.Color(theme.colorCyan)) | ||
| statCountStyle := lipgloss.NewStyle(). | ||
| Foreground(lipgloss.Color(theme.colorGreen)).Width(4).Align(lipgloss.Right) | ||
| statCountWarnStyle := lipgloss.NewStyle(). | ||
| Foreground(lipgloss.Color(theme.colorYellow)).Width(4).Align(lipgloss.Right) | ||
| if s == nil { | ||
| return remoteStyle.Render("☁") + statCountStyle.Render(" ") + statCountStyle.Render(" ") | ||
| } else { | ||
| str := "" | ||
| if s.Outdated { | ||
| str += outdatedStyle.Render("↻") | ||
| } else { | ||
| str += genericStyle.Render(" ") | ||
| } | ||
| if s.Ahead > 0 || s.Behind > 0 { | ||
| str += statCountWarnStyle.Render(s.AheadString()) | ||
| str += statCountWarnStyle.Render(s.BehindString()) | ||
| } else { | ||
| str += statCountStyle.Render(s.AheadString()) | ||
| str += statCountStyle.Render(s.BehindString()) | ||
| } | ||
| return str | ||
| } | ||
| } | ||
|
|
||
| func (s trackStat) AheadString() string { | ||
| if s.Ahead == 0 { | ||
| return "↑" | ||
| } else if s.Ahead > maxTrackStatCount { | ||
| return fmt.Sprintf("%d+↑", maxTrackStatCount) | ||
| } else { | ||
| return fmt.Sprintf("%d↑", s.Ahead) | ||
| } | ||
| } | ||
|
|
||
| func (s trackStat) BehindString() string { | ||
| if s.Behind == 0 { | ||
| return "↓" | ||
| } else if s.Behind > maxTrackStatCount { | ||
| return fmt.Sprintf("%d+↓", maxTrackStatCount) | ||
| } else { | ||
| return fmt.Sprintf("%d↓", s.Behind) | ||
| } | ||
| } | ||
|
|
||
| func getBranchTrackStats(path string, remote string, remoteBranches []vcs.Branch) (map[string]*trackStat, error) { | ||
| repo, err := git.PlainOpen(path) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| iter, err := repo.Branches() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| remoteBranchMap := make(map[string]struct{}, len(remoteBranches)) | ||
| for _, remoteBranch := range remoteBranches { | ||
| remoteBranchMap[remoteBranch.Name] = struct{}{} | ||
| } | ||
| trackedBranchMap := make(map[string]*plumbing.Reference) | ||
|
|
||
| if err := iter.ForEach(func(branchRef *plumbing.Reference) error { | ||
| localName := branchRef.Name().Short() | ||
| // repo.Branch reads branch from .git/config, it will report "not found" if a local branch has no config. | ||
| if b, err := repo.Branch(localName); err == nil && b.Remote == remote { | ||
| trackedBranchMap[b.Merge.Short()] = branchRef | ||
| } else if _, ok := remoteBranchMap[localName]; ok { | ||
| trackedBranchMap[localName] = branchRef | ||
| } | ||
| return nil | ||
| }); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| results := make(map[string]*trackStat, len(remoteBranches)) | ||
| for _, remoteBranch := range remoteBranches { | ||
| var result *trackStat = nil | ||
| if b, ok := trackedBranchMap[remoteBranch.Name]; !ok { | ||
| } else { | ||
| if result, err = getTrackStat(repo, b, remote, &remoteBranch); err != nil { | ||
| result = nil | ||
| } | ||
| } | ||
| results[remoteBranch.Name] = result | ||
| } | ||
| return results, nil | ||
| } | ||
|
|
||
| func getTrackStat(repo *git.Repository, localRef *plumbing.Reference, remote string, remoteBranch *vcs.Branch) (*trackStat, error) { | ||
| if remoteRef, err := repo.Reference( | ||
| plumbing.NewRemoteReferenceName(remote, remoteBranch.Name), true, | ||
| ); err != nil { | ||
| return nil, err | ||
| } else { | ||
| stat := &trackStat{ | ||
| Outdated: false, | ||
| Ahead: 0, | ||
| Behind: 0, | ||
| } | ||
|
|
||
| if stat.Ahead, stat.Behind, err = calculateTrackCount( | ||
| repo, localRef.Hash(), remoteRef.Hash(), | ||
| ); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| if remoteRef.Hash().String() != remoteBranch.LastCommit.ID { | ||
| // mark outdated, need `git fetch` | ||
| stat.Outdated = true | ||
| } | ||
| return stat, nil | ||
| } | ||
| } | ||
|
|
||
| func calculateTrackCount(repo *git.Repository, ref, base plumbing.Hash) (ahead, behind int, err error) { | ||
| if ref == base { | ||
| return 0, 0, nil | ||
| } | ||
|
|
||
| left, err := repo.CommitObject(ref) | ||
| if err != nil { | ||
| return 0, 0, err | ||
| } | ||
| right, err := repo.CommitObject(base) | ||
| if err != nil { | ||
| return 0, 0, err | ||
| } | ||
|
|
||
| commitMap := make(map[plumbing.Hash]bool) | ||
|
|
||
| if err := iterateCommits(left, func(c *object.Commit) { | ||
| commitMap[c.Hash] = true | ||
| }); err != nil { | ||
| return 0, 0, err | ||
| } | ||
|
|
||
| if err := iterateCommits(right, func(c *object.Commit) { | ||
| if _, ok := commitMap[c.Hash]; !ok { | ||
| behind++ | ||
| } else { | ||
| commitMap[c.Hash] = false | ||
| } | ||
| }); err != nil { | ||
| return 0, 0, err | ||
| } | ||
|
|
||
| for _, v := range commitMap { | ||
| if v { | ||
| ahead++ | ||
| } | ||
| } | ||
| return | ||
| } | ||
|
|
||
| func iterateCommits(c *object.Commit, fn func(c *object.Commit)) error { | ||
| iter := object.NewCommitPreorderIter(c, map[plumbing.Hash]bool{}, []plumbing.Hash{}) | ||
| defer iter.Close() | ||
| for { | ||
| if curr, err := iter.Next(); err == io.EOF { | ||
| break | ||
| } else if err != nil { | ||
| return err | ||
| } else { | ||
| fn(curr) | ||
| } | ||
| } | ||
| return nil | ||
| } |