From e2a3dc40dc5bb408ab0f311ee4927d8dda433b71 Mon Sep 17 00:00:00 2001
From: Kyle Meyer <kyle@kyleam.com>
Date: Thu, 27 Jun 2019 12:55:22 -0400
Subject: km-magit: Add branch "set" archiving and deletion

---
 lisp/km-magit.el | 81 +++++++++++++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 71 insertions(+), 10 deletions(-)

(limited to 'lisp/km-magit.el')

diff --git a/lisp/km-magit.el b/lisp/km-magit.el
index 2f8709f..0cfbf2c 100644
--- a/lisp/km-magit.el
+++ b/lisp/km-magit.el
@@ -208,6 +208,18 @@ START-POINT set to the current branch.
                                           (concat it "-tmp")))))
   (magit-run-git "checkout" "-b" branch))
 
+(defun km/magit-branch--get-versions (branch suffix)
+  (let ((version-re (rx (group (one-or-more digit)) string-end)))
+    (delq nil
+          (mapcar
+           (lambda (s)
+             (unless (string= branch s)
+               (if (string-match version-re s)
+                   (string-to-number
+                    (match-string-no-properties 1 s))
+                 (error "bug: version re should always match"))))
+           (km/magit-branch-get-set branch suffix)))))
+
 (defun km/magit-branch-backup-current (&optional choose-suffix)
   "Create a backup branch for the current branch.
 Name it as '<current-branch>__v<n>', where <n> is incremented
@@ -222,16 +234,7 @@ argument CHOOSE-SUFFIX, prompt for a suffix to use instead of
      (let* ((suffix (if choose-suffix
                         (magit-read-string-ns "Backup suffix")
                       "v"))
-            (version-re (format "\\`%s__%s\\([[:digit:]]+\\)\\'"
-                                (regexp-quote current)
-                                (regexp-quote suffix)))
-            (versions (delq nil
-                            (mapcar
-                             (lambda (s)
-                               (and (string-match version-re s)
-                                    (string-to-number
-                                     (match-string-no-properties 1 s))))
-                             (magit-list-local-branch-names)))))
+            (versions (km/magit-branch--get-versions current suffix)))
        (format "%s__%s%d"
                current
                suffix
@@ -270,6 +273,64 @@ argument CHOOSE-SUFFIX, prompt for a suffix to use instead of
                          (caar branches)
                        (format "%d branches" num-branches))))))
 
+(defun km/magit-match-versioned (member)
+  (string-match (rx (group (one-or-more (not space)))
+                    "__"
+                    (group (one-or-more (not (any space digit))))
+                    (one-or-more digit)
+                    string-end)
+                member))
+
+(defun km/magit-branch-get-set (member &optional suffix)
+  (let* ((rx-form (if (km/magit-match-versioned member)
+                      `(and string-start
+                            ,(match-string 1 member)
+                            "__"
+                            ,(match-string 2 member)
+                            (one-or-more digit)
+                            string-end)
+                    `(and string-start
+                          ,member
+                          (zero-or-more
+                           "__"
+                           ,(or suffix '(one-or-more (not space)))
+                           (one-or-more digit))
+                          string-end)))
+         (re (rx-to-string rx-form 'no-group)))
+    (cl-remove-if-not (lambda (b) (string-match-p re b))
+                      (magit-list-local-branch-names))))
+
+(defun km/magit-branch--set-action (action fn member)
+  (when-let ((branch-set (km/magit-branch-get-set member)))
+    (when (y-or-n-p (concat "  "
+                            (mapconcat #'identity branch-set "\n  ")
+                            "\n" action "? "))
+      (funcall fn branch-set))))
+
+(defun km/magit-branch-delete-set (member)
+  "Delete a set of branches identified by MEMBER."
+  (interactive
+   (list (magit-completing-read
+          "Delete set with member" (magit-list-refnames "refs/heads")
+          nil 'require nil nil
+          (or (magit-branch-at-point) (magit-get-previous-branch)))))
+  (km/magit-branch--set-action
+   "Delete"
+   (lambda (branch-set) (magit-run-git "branch" "-D" branch-set))
+   member))
+
+(defun km/magit-branch-archive-set (member)
+  "Archive a set of branches identified by MEMBER."
+  (interactive
+   (list (magit-completing-read
+          "Archive set with member" (magit-list-refnames "refs/heads")
+          nil 'require nil nil
+          (or (magit-branch-at-point) (magit-get-previous-branch)))))
+  (km/magit-branch--set-action
+   "Archive"
+   #'km/magit-branch-archive
+   member))
+
 (defun km/magit-mode-bury-all-windows (&optional kill-buffer)
   "Run `magit-mode-quit-window' until no longer in Magit buffer."
   (interactive "P")
-- 
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