From 19b2c24040c30dee2da30d2294404256e7187cbc Mon Sep 17 00:00:00 2001
From: jao <jao@gnu.org>
Date: Tue, 27 Sep 2022 20:40:30 +0100
Subject: attic: doc-view-imenu is now part of emacs29

---
 lib/doc/jao-doc-view.el | 17 +++++------------
 lib/doc/jao-pdf.el      | 39 +++------------------------------------
 2 files changed, 8 insertions(+), 48 deletions(-)

(limited to 'lib')

diff --git a/lib/doc/jao-doc-view.el b/lib/doc/jao-doc-view.el
index 3631e98..f4c7c8b 100644
--- a/lib/doc/jao-doc-view.el
+++ b/lib/doc/jao-doc-view.el
@@ -38,18 +38,11 @@
      (round (/ (* height (cdr (pdf-view-image-size))) (frame-char-height))))))
 
 ;;; imenu
-(defvar-local jao-doc-view--imenu-file nil)
-(defvar-local jao-doc-view--goer 'jao-doc-view-goto-page)
-
-(defun jao-doc-view--enable-imenu (&optional file-name goto-page)
-  (setq-local imenu-create-index-function #'jao-doc-view--imenu-create-index
-              jao-doc-view--imenu-file (or file-name jao-doc-view--imenu-file)
-              jao-doc-view--goer (or goto-page 'jao-doc-view-goto-page)))
-
-(defun jao-doc-view--imenu-create-index ()
-  (jao-pdf-imenu-index 'jao-doc-view--goer 'jao-doc-view--imenu-file))
-
-(add-hook 'doc-view-mode-hook #'jao-pdf-set-up-imenu)
+(defun jao-doc-view-enable-imenu (file-name goto-page)
+  (let ((ifun (lambda () (doc-view-imenu-index file-name goto-page)))
+        (doc-view-imenu-enabled t))
+    (doc-view-imenu-setup)
+    (setq-local imenu-create-index-function ifun)))
 
 ;;; Page trailing
 (defvar-local jao-doc-view--trail-back ())
diff --git a/lib/doc/jao-pdf.el b/lib/doc/jao-pdf.el
index 0cff06c..5ab3f24 100644
--- a/lib/doc/jao-pdf.el
+++ b/lib/doc/jao-pdf.el
@@ -42,41 +42,6 @@
   "Convert a title, possibly with embedded spaces, to a PDF filename."
   (concat (mapconcat 'downcase (split-string title nil t) "-") ".pdf"))
 
-(defvar jao-pdf--outline-rx
-  "[^\t]+\\(\t+\\)\"\\(.+\\)\"\t#\\(?:page=\\)?\\([0-9]+\\)")
-
-(defun jao-pdf-outline (&optional file-name)
-  "Return an alist describing the given FILE-NAME (or current if nil).
-The result is cached as a local buffer variable."
-  (let* ((outline nil)
-         (fn (or file-name (buffer-file-name)))
-         (fn (shell-quote-argument (expand-file-name fn))))
-    (with-temp-buffer
-      (insert (shell-command-to-string (format "mutool show %s outline" fn)))
-      (goto-char (point-min))
-      (while (re-search-forward jao-pdf--outline-rx nil t)
-        (push `((level . ,(length (match-string 1)))
-                (title . ,(match-string 2))
-                (page . ,(string-to-number (match-string 3))))
-              outline)))
-    (setq jao-pdf--outline (nreverse outline))))
-
-(defun jao-pdf-imenu-index (&optional goto-page-fn file-name)
-  "Create an imenu index using `jao-pdf-outline'."
-  (let* ((goto (or goto-page-fn 'doc-view-goto-page))
-         (act (lambda (_name _pos page) (funcall goto page)))
-         (index nil))
-    (dolist (item (or jao-pdf--outline (jao-pdf-outline file-name)))
-      (let-alist item
-        (let* ((lvl (make-string (max 0 (1- .level)) ?\ ))
-               (title (format "%s%s (%s)" "" .title .page)))
-          (push `(,title 0 ,act ,.page) index))))
-    (nreverse index)))
-
-(defun jao-pdf-set-up-imenu ()
-  (setq-local imenu-create-index-function #'jao-pdf-imenu-index)
-  (imenu-add-to-menubar "Outline"))
-
 (defun jao-pdf-title (&optional fname)
   (if (or fname (not (derived-mode-p 'doc-view-mode 'pdf-view-mode)))
       (let ((base (file-name-base (or fname (buffer-file-name)))))
@@ -84,9 +49,11 @@ The result is cached as a local buffer variable."
     (or (jao-pdf-section-title)
         (when buffer-file-name (jao-pdf-title buffer-file-name)))))
 
+(defvar-local jao-pdf--outline nil)
+
 (defun jao-pdf-section-title (&optional page file-name)
   (when (not jao-pdf--outline)
-    (setq-local jao-pdf--outline (jao-pdf-outline file-name)))
+    (setq-local jao-pdf--outline (doc-view--pdf-outline file-name)))
   (let ((page (or page
                   (and (derived-mode-p 'doc-view-mode) (doc-view-current-page))
                   (and (derived-mode-p 'pdf-view) (pdf-view-current-page))))
-- 
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