refactor

pkg/gui/mergeconflicts/merge_conflicts.go

@@ -0,0 +1,86 @@
+package mergeconflicts
+
+import (
+	"bytes"
+	"strings"
+
+	"github.com/fatih/color"
+	"github.com/jesseduffield/lazygit/pkg/commands"
+	"github.com/jesseduffield/lazygit/pkg/theme"
+	"github.com/jesseduffield/lazygit/pkg/utils"
+)
+
+type Selection int
+
+const (
+	TOP Selection = iota
+	BOTTOM
+	BOTH
+)
+
+func FindConflicts(content string) []commands.Conflict {
+	conflicts := make([]commands.Conflict, 0)
+
+	if content == "" {
+		return conflicts
+	}
+
+	var newConflict commands.Conflict
+	for i, line := range utils.SplitLines(content) {
+		trimmedLine := strings.TrimPrefix(line, "++")
+		switch trimmedLine {
+		case "<<<<<<< HEAD", "<<<<<<< MERGE_HEAD", "<<<<<<< Updated upstream", "<<<<<<< ours":
+			newConflict = commands.Conflict{Start: i}
+		case "=======":
+			newConflict.Middle = i
+		default:
+			if strings.HasPrefix(trimmedLine, ">>>>>>> ") {
+				newConflict.End = i
+				conflicts = append(conflicts, newConflict)
+			}
+		}
+
+	}
+	return conflicts
+}
+
+func ColoredConflictFile(content string, conflicts []commands.Conflict, conflictIndex int, conflictTop, hasFocus bool) string {
+	if len(conflicts) == 0 {
+		return content
+	}
+	conflict, remainingConflicts := shiftConflict(conflicts)
+	var outputBuffer bytes.Buffer
+	for i, line := range utils.SplitLines(content) {
+		colourAttr := theme.DefaultTextColor
+		if i == conflict.Start || i == conflict.Middle || i == conflict.End {
+			colourAttr = color.FgRed
+		}
+		colour := color.New(colourAttr)
+		if hasFocus && conflictIndex < len(conflicts) && conflicts[conflictIndex] == conflict && shouldHighlightLine(i, conflict, conflictTop) {
+			colour.Add(color.Bold)
+			colour.Add(theme.SelectedRangeBgColor)
+		}
+		if i == conflict.End && len(remainingConflicts) > 0 {
+			conflict, remainingConflicts = shiftConflict(remainingConflicts)
+		}
+		outputBuffer.WriteString(utils.ColoredStringDirect(line, colour) + "\n")
+	}
+	return outputBuffer.String()
+}
+
+func IsIndexToDelete(i int, conflict commands.Conflict, selection Selection) bool {
+	return i == conflict.Middle ||
+		i == conflict.Start ||
+		i == conflict.End ||
+		selection != BOTH &&
+			(selection == BOTTOM && i > conflict.Start && i < conflict.Middle) ||
+		(selection == TOP && i > conflict.Middle && i < conflict.End)
+}
+
+func shiftConflict(conflicts []commands.Conflict) (commands.Conflict, []commands.Conflict) {
+	return conflicts[0], conflicts[1:]
+}
+
+func shouldHighlightLine(index int, conflict commands.Conflict, top bool) bool {
+	return (index >= conflict.Start && index <= conflict.Middle && top) || (index >= conflict.Middle && index <= conflict.End && !top)
+}