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-rw-r--r--commands/patch/rebase.go249
-rw-r--r--commands/patch/rebase_test.go114
2 files changed, 363 insertions, 0 deletions
diff --git a/commands/patch/rebase.go b/commands/patch/rebase.go
new file mode 100644
index 00000000..10da2a63
--- /dev/null
+++ b/commands/patch/rebase.go
@@ -0,0 +1,249 @@
+package patch
+
+import (
+ "bufio"
+ "bytes"
+ "fmt"
+ "io"
+ "os"
+ "os/exec"
+ "sort"
+ "strings"
+ "time"
+
+ "git.sr.ht/~rjarry/aerc/app"
+ "git.sr.ht/~rjarry/aerc/config"
+ "git.sr.ht/~rjarry/aerc/lib/pama"
+ "git.sr.ht/~rjarry/aerc/lib/pama/models"
+ "git.sr.ht/~rjarry/aerc/lib/ui"
+ "git.sr.ht/~rjarry/aerc/log"
+)
+
+type Rebase struct {
+ Commit string `opt:"commit" required:"false"`
+}
+
+func init() {
+ register(Rebase{})
+}
+
+func (Rebase) Aliases() []string {
+ return []string{"rebase"}
+}
+
+func (r Rebase) Execute(args []string) error {
+ m := pama.New()
+ current, err := m.CurrentProject()
+ if err != nil {
+ return err
+ }
+
+ baseID := r.Commit
+ if baseID == "" {
+ baseID = current.Base.ID
+ }
+
+ commits, err := m.RebaseCommits(current, baseID)
+ if err != nil {
+ return err
+ }
+
+ if len(commits) == 0 {
+ err := m.SaveRebased(current, baseID, nil)
+ if err != nil {
+ return fmt.Errorf("No commits to rebase, but saving of new reference failed: %w", err)
+ }
+ app.PushStatus("No commits to rebase.", 10*time.Second)
+ return nil
+ }
+
+ rebase := newRebase(commits)
+ f, err := os.CreateTemp("", "aerc-patch-rebase-*")
+ if err != nil {
+ return err
+ }
+ name := f.Name()
+ _, err = io.Copy(f, rebase.content())
+ if err != nil {
+ return err
+ }
+ f.Close()
+
+ createWidget := func() (ui.DrawableInteractive, error) {
+ editorCmd, err := app.CmdFallbackSearch(config.EditorCmds(), true)
+ if err != nil {
+ return nil, err
+ }
+ editor := exec.Command("/bin/sh", "-c", editorCmd+" "+name)
+ term, err := app.NewTerminal(editor)
+ if err != nil {
+ return nil, err
+ }
+ term.OnClose = func(_ error) {
+ app.CloseDialog()
+ defer os.Remove(name)
+ defer term.Focus(false)
+
+ f, err := os.Open(name)
+ if err != nil {
+ app.PushError(fmt.Sprintf("failed to open file: %v", err))
+ return
+ }
+ defer f.Close()
+
+ if editor.ProcessState.ExitCode() > 0 {
+ app.PushError("Quitting rebase without saving.")
+ return
+ }
+ err = m.SaveRebased(current, baseID, rebase.parse(f))
+ if err != nil {
+ app.PushError(fmt.Sprintf("Failed to save rebased commits: %v", err))
+ return
+ }
+ app.PushStatus("Successfully rebased.", 10*time.Second)
+ }
+ term.Show(true)
+ term.Focus(true)
+ return term, nil
+ }
+
+ viewer, err := createWidget()
+ if err != nil {
+ return err
+ }
+
+ app.AddDialog(app.NewDialog(
+ ui.NewBox(viewer, fmt.Sprintf("Patch Rebase on %-6.6s", baseID), "",
+ app.SelectedAccountUiConfig(),
+ ),
+ // start pos on screen
+ func(h int) int {
+ return h / 8
+ },
+ // dialog height
+ func(h int) int {
+ return h - 2*h/8
+ },
+ ))
+
+ return nil
+}
+
+type rebase struct {
+ commits []models.Commit
+ table map[string]models.Commit
+ order []string
+}
+
+func newRebase(commits []models.Commit) *rebase {
+ return &rebase{
+ commits: commits,
+ table: make(map[string]models.Commit),
+ }
+}
+
+const (
+ header string = ""
+ footer string = `
+# Rebase aerc's patch data. This will not affect the underlying repository in
+# any way.
+#
+# Change the name in the first column to assign a new tag to a commit. To group
+# multiple commits, use the same tag name.
+#
+# An 'untracked' tag indicates that aerc lost track of that commit, either due
+# to a commit-hash change or because that commit was applied outside of aerc.
+#
+# Do not change anything else besides the tag names (first column).
+#
+# Do not reorder the lines. The ordering should remain as in the repository.
+#
+# If you remove a line or keep an 'untracked' tag, those commits will be removed
+# from aerc's patch tracking.
+#
+`
+)
+
+func (r *rebase) content() io.Reader {
+ var buf bytes.Buffer
+ buf.WriteString(header)
+ for _, c := range r.commits {
+ tag := c.Tag
+ if tag == "" {
+ tag = models.Untracked
+ }
+ shortHash := fmt.Sprintf("%6.6s", c.ID)
+ buf.WriteString(
+ fmt.Sprintf("%-12s %6.6s %s\n", tag, shortHash, c.Info()))
+ r.table[shortHash] = c
+ r.order = append(r.order, shortHash)
+ }
+ buf.WriteString(footer)
+ return &buf
+}
+
+func (r *rebase) parse(reader io.Reader) []models.Commit {
+ var commits []models.Commit
+ var hashes []string
+ scanner := bufio.NewScanner(reader)
+ duplicated := make(map[string]struct{})
+ for scanner.Scan() {
+ s := scanner.Text()
+ i := strings.Index(s, "#")
+ if i >= 0 {
+ s = s[:i]
+ }
+ if strings.TrimSpace(s) == "" {
+ continue
+ }
+
+ fds := strings.Fields(s)
+ if len(fds) < 2 {
+ continue
+ }
+
+ tag, shortHash := fds[0], fds[1]
+ if tag == models.Untracked {
+ continue
+ }
+ _, dedup := duplicated[shortHash]
+ if dedup {
+ log.Warnf("rebase: skipping duplicated hash: %s", shortHash)
+ continue
+ }
+
+ hashes = append(hashes, shortHash)
+ c, ok := r.table[shortHash]
+ if !ok {
+ log.Errorf("Looks like the commit hashes were changed "+
+ "during the rebase. Dropping: %v", shortHash)
+ continue
+ }
+ log.Tracef("save commit %s with tag %s", shortHash, tag)
+ c.Tag = tag
+ commits = append(commits, c)
+ duplicated[shortHash] = struct{}{}
+ }
+ reorder(commits, hashes, r.order)
+ return commits
+}
+
+func reorder(toSort []models.Commit, now []string, by []string) {
+ byMap := make(map[string]int)
+ for i, s := range by {
+ byMap[s] = i
+ }
+
+ complete := true
+ for _, s := range now {
+ _, ok := byMap[s]
+ complete = complete && ok
+ }
+ if !complete {
+ return
+ }
+
+ sort.SliceStable(toSort, func(i, j int) bool {
+ return byMap[now[i]] < byMap[now[j]]
+ })
+}
diff --git a/commands/patch/rebase_test.go b/commands/patch/rebase_test.go
new file mode 100644
index 00000000..fd3d705b
--- /dev/null
+++ b/commands/patch/rebase_test.go
@@ -0,0 +1,114 @@
+package patch
+
+import (
+ "fmt"
+ "reflect"
+ "strings"
+ "testing"
+
+ "git.sr.ht/~rjarry/aerc/lib/pama/models"
+)
+
+func TestRebase_reorder(t *testing.T) {
+ newCommits := func(order []string) []models.Commit {
+ var commits []models.Commit
+ for _, s := range order {
+ commits = append(commits, models.Commit{ID: s})
+ }
+ return commits
+ }
+ tests := []struct {
+ name string
+ commits []models.Commit
+ now []string
+ by []string
+ want []models.Commit
+ }{
+ {
+ name: "nothing to reorder",
+ commits: newCommits([]string{"1", "2", "3"}),
+ now: []string{"1", "2", "3"},
+ by: []string{"1", "2", "3"},
+ want: newCommits([]string{"1", "2", "3"}),
+ },
+ {
+ name: "reorder",
+ commits: newCommits([]string{"1", "3", "2"}),
+ now: []string{"1", "3", "2"},
+ by: []string{"1", "2", "3"},
+ want: newCommits([]string{"1", "2", "3"}),
+ },
+ {
+ name: "reorder inverted",
+ commits: newCommits([]string{"3", "2", "1"}),
+ now: []string{"3", "2", "1"},
+ by: []string{"1", "2", "3"},
+ want: newCommits([]string{"1", "2", "3"}),
+ },
+ {
+ name: "changed hash: do not sort",
+ commits: newCommits([]string{"1", "6", "3"}),
+ now: []string{"1", "6", "3"},
+ by: []string{"1", "2", "3"},
+ want: newCommits([]string{"1", "6", "3"}),
+ },
+ }
+
+ for _, test := range tests {
+ reorder(test.commits, test.now, test.by)
+ if !reflect.DeepEqual(test.commits, test.want) {
+ t.Errorf("test '%s' failed to reorder: got %v but "+
+ "want %v", test.name, test.commits, test.want)
+ }
+ }
+}
+
+func newCommit(id, subj, tag string) models.Commit {
+ return models.Commit{
+ ID: id,
+ Subject: subj,
+ Tag: tag,
+ }
+}
+
+func TestRebase_parse(t *testing.T) {
+ input := `
+ # some header info
+ hello_v1 123 same info
+ hello_v1 456 same info
+ untracked 789 same info
+ hello_v2 012 diff info
+ untracked 345 diff info # not very useful comment
+ # some footer info
+ `
+ commits := []models.Commit{
+ newCommit("123123", "same info", "hello_v1"),
+ newCommit("456456", "same info", "hello_v1"),
+ newCommit("789789", "same info", models.Untracked),
+ newCommit("012012", "diff info", "hello_v2"),
+ newCommit("345345", "diff info", models.Untracked),
+ }
+
+ var order []string
+ for _, c := range commits {
+ order = append(order, fmt.Sprintf("%3.3s", c.ID))
+ }
+
+ table := make(map[string]models.Commit)
+ for i, shortId := range order {
+ table[shortId] = commits[i]
+ }
+
+ rebase := &rebase{
+ commits: commits,
+ table: table,
+ order: order,
+ }
+
+ results := rebase.parse(strings.NewReader(input))
+
+ if len(results) != 3 {
+ t.Errorf("failed to return correct number of commits: "+
+ "got %d but wanted 3", len(results))
+ }
+}
generated by cgit (git 2.34.1) at 2024-10-19 07:33:20 +0000