mirror of
https://github.com/jesseduffield/lazygit.git
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261 lines
7.0 KiB
Go
261 lines
7.0 KiB
Go
// though this panel is called the merge panel, it's really going to use the main panel. This may change in the future
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package gui
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import (
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"bufio"
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"bytes"
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"io/ioutil"
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"math"
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"os"
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"strings"
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"github.com/fatih/color"
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"github.com/jesseduffield/gocui"
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"github.com/jesseduffield/lazygit/pkg/commands"
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"github.com/jesseduffield/lazygit/pkg/utils"
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)
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func (gui *Gui) findConflicts(content string) ([]commands.Conflict, error) {
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conflicts := make([]commands.Conflict, 0)
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var newConflict commands.Conflict
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for i, line := range utils.SplitLines(content) {
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if line == "<<<<<<< HEAD" || line == "<<<<<<< MERGE_HEAD" || line == "<<<<<<< Updated upstream" {
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newConflict = commands.Conflict{Start: i}
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} else if line == "=======" {
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newConflict.Middle = i
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} else if strings.HasPrefix(line, ">>>>>>> ") {
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newConflict.End = i
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conflicts = append(conflicts, newConflict)
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}
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}
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return conflicts, nil
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}
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func (gui *Gui) shiftConflict(conflicts []commands.Conflict) (commands.Conflict, []commands.Conflict) {
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return conflicts[0], conflicts[1:]
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}
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func (gui *Gui) shouldHighlightLine(index int, conflict commands.Conflict, top bool) bool {
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return (index >= conflict.Start && index <= conflict.Middle && top) || (index >= conflict.Middle && index <= conflict.End && !top)
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}
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func (gui *Gui) coloredConflictFile(content string, conflicts []commands.Conflict, conflictIndex int, conflictTop, hasFocus bool) (string, error) {
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if len(conflicts) == 0 {
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return content, nil
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}
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conflict, remainingConflicts := gui.shiftConflict(conflicts)
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var outputBuffer bytes.Buffer
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for i, line := range utils.SplitLines(content) {
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colourAttr := color.FgWhite
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if i == conflict.Start || i == conflict.Middle || i == conflict.End {
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colourAttr = color.FgRed
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}
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colour := color.New(colourAttr)
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if hasFocus && conflictIndex < len(conflicts) && conflicts[conflictIndex] == conflict && gui.shouldHighlightLine(i, conflict, conflictTop) {
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colour.Add(color.Bold)
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}
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if i == conflict.End && len(remainingConflicts) > 0 {
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conflict, remainingConflicts = gui.shiftConflict(remainingConflicts)
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}
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outputBuffer.WriteString(utils.ColoredStringDirect(line, colour) + "\n")
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}
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return outputBuffer.String(), nil
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}
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func (gui *Gui) handleSelectTop(g *gocui.Gui, v *gocui.View) error {
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gui.State.ConflictTop = true
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return gui.refreshMergePanel(g)
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}
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func (gui *Gui) handleSelectBottom(g *gocui.Gui, v *gocui.View) error {
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gui.State.ConflictTop = false
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return gui.refreshMergePanel(g)
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}
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func (gui *Gui) handleSelectNextConflict(g *gocui.Gui, v *gocui.View) error {
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if gui.State.ConflictIndex >= len(gui.State.Conflicts)-1 {
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return nil
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}
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gui.State.ConflictIndex++
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return gui.refreshMergePanel(g)
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}
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func (gui *Gui) handleSelectPrevConflict(g *gocui.Gui, v *gocui.View) error {
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if gui.State.ConflictIndex <= 0 {
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return nil
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}
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gui.State.ConflictIndex--
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return gui.refreshMergePanel(g)
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}
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func (gui *Gui) isIndexToDelete(i int, conflict commands.Conflict, pick string) bool {
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return i == conflict.Middle ||
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i == conflict.Start ||
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i == conflict.End ||
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pick != "both" &&
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(pick == "bottom" && i > conflict.Start && i < conflict.Middle) ||
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(pick == "top" && i > conflict.Middle && i < conflict.End)
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}
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func (gui *Gui) resolveConflict(g *gocui.Gui, conflict commands.Conflict, pick string) error {
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gitFile, err := gui.getSelectedFile(g)
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if err != nil {
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return err
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}
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file, err := os.Open(gitFile.Name)
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if err != nil {
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return err
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}
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defer file.Close()
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reader := bufio.NewReader(file)
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output := ""
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for i := 0; true; i++ {
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line, err := reader.ReadString('\n')
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if err != nil {
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break
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}
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if !gui.isIndexToDelete(i, conflict, pick) {
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output += line
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}
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}
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gui.Log.Info(output)
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return ioutil.WriteFile(gitFile.Name, []byte(output), 0644)
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}
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func (gui *Gui) pushFileSnapshot(g *gocui.Gui) error {
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gitFile, err := gui.getSelectedFile(g)
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if err != nil {
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return err
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}
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content, err := gui.GitCommand.CatFile(gitFile.Name)
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if err != nil {
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return err
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}
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gui.State.EditHistory.Push(content)
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return nil
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}
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func (gui *Gui) handlePopFileSnapshot(g *gocui.Gui, v *gocui.View) error {
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if gui.State.EditHistory.Len() == 0 {
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return nil
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}
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prevContent := gui.State.EditHistory.Pop().(string)
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gitFile, err := gui.getSelectedFile(g)
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if err != nil {
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return err
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}
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ioutil.WriteFile(gitFile.Name, []byte(prevContent), 0644)
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return gui.refreshMergePanel(g)
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}
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func (gui *Gui) handlePickHunk(g *gocui.Gui, v *gocui.View) error {
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conflict := gui.State.Conflicts[gui.State.ConflictIndex]
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gui.pushFileSnapshot(g)
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pick := "bottom"
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if gui.State.ConflictTop {
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pick = "top"
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}
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err := gui.resolveConflict(g, conflict, pick)
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if err != nil {
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panic(err)
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}
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gui.refreshMergePanel(g)
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return nil
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}
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func (gui *Gui) handlePickBothHunks(g *gocui.Gui, v *gocui.View) error {
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conflict := gui.State.Conflicts[gui.State.ConflictIndex]
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gui.pushFileSnapshot(g)
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err := gui.resolveConflict(g, conflict, "both")
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if err != nil {
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panic(err)
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}
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return gui.refreshMergePanel(g)
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}
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func (gui *Gui) refreshMergePanel(g *gocui.Gui) error {
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cat, err := gui.catSelectedFile(g)
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if err != nil {
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return err
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}
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if cat == "" {
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return nil
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}
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gui.State.Conflicts, err = gui.findConflicts(cat)
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if err != nil {
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return err
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}
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if len(gui.State.Conflicts) == 0 {
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return gui.handleCompleteMerge(g)
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} else if gui.State.ConflictIndex > len(gui.State.Conflicts)-1 {
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gui.State.ConflictIndex = len(gui.State.Conflicts) - 1
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}
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hasFocus := gui.currentViewName(g) == "main"
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content, err := gui.coloredConflictFile(cat, gui.State.Conflicts, gui.State.ConflictIndex, gui.State.ConflictTop, hasFocus)
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if err != nil {
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return err
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}
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if err := gui.scrollToConflict(g); err != nil {
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return err
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}
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return gui.renderString(g, "main", content)
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}
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func (gui *Gui) scrollToConflict(g *gocui.Gui) error {
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mainView, err := g.View("main")
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if err != nil {
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return err
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}
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if len(gui.State.Conflicts) == 0 {
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return nil
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}
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conflict := gui.State.Conflicts[gui.State.ConflictIndex]
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ox, _ := mainView.Origin()
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_, height := mainView.Size()
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conflictMiddle := (conflict.End + conflict.Start) / 2
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newOriginY := int(math.Max(0, float64(conflictMiddle-(height/2))))
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return mainView.SetOrigin(ox, newOriginY)
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}
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func (gui *Gui) switchToMerging(g *gocui.Gui) error {
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gui.State.ConflictIndex = 0
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gui.State.ConflictTop = true
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_, err := g.SetCurrentView("main")
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if err != nil {
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return err
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}
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return gui.refreshMergePanel(g)
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}
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func (gui *Gui) renderMergeOptions() error {
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return gui.renderOptionsMap(map[string]string{
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"↑ ↓": gui.Tr.SLocalize("selectHunk"),
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"← →": gui.Tr.SLocalize("navigateConflicts"),
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"space": gui.Tr.SLocalize("pickHunk"),
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"b": gui.Tr.SLocalize("pickBothHunks"),
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"z": gui.Tr.SLocalize("undo"),
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})
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}
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func (gui *Gui) handleEscapeMerge(g *gocui.Gui, v *gocui.View) error {
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filesView, err := g.View("files")
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if err != nil {
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return err
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}
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gui.refreshFiles(g)
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return gui.switchFocus(g, v, filesView)
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}
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func (gui *Gui) handleCompleteMerge(g *gocui.Gui) error {
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filesView, err := g.View("files")
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if err != nil {
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return err
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}
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gui.stageSelectedFile(g)
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gui.refreshFiles(g)
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return gui.switchFocus(g, nil, filesView)
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}
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