Write core initfiles + defuns

core/lib/defuns-buffers.el

@@ -0,0 +1,203 @@
+;;; defuns-buffers.el
+
+;;;###autoload
+(defun narf:narrow (start end)
+  "Restrict editing in this buffer to the current region, indirectly.
+
+Inspired from http://demonastery.org/2013/04/emacs-evil-narrow-region/"
+  (interactive "r")
+  (deactivate-mark)
+  (let ((buf (clone-indirect-buffer nil nil)))
+    (with-current-buffer buf
+      (narrow-to-region start end))
+    (switch-to-buffer buf)))
+
+;;;###autoload
+(defun narf:widen ()
+  (interactive)
+  (when (buffer-narrowed-p)
+    (widen)))
+
+;;;###autoload
+(defun narf/set-read-only-region (begin end)
+  "See http://stackoverflow.com/questions/7410125"
+  (let ((modified (buffer-modified-p)))
+    (add-text-properties begin end '(read-only t))
+    (set-buffer-modified-p modified)))
+
+;;;###autoload
+(defun narf/set-region-writeable (begin end)
+  "See http://stackoverflow.com/questions/7410125"
+  (let ((modified (buffer-modified-p))
+        (inhibit-read-only t))
+    (remove-text-properties begin end '(read-only t))
+    (set-buffer-modified-p modified)))
+
+
+;; Killing Life and Death ;;;;;;;;;;;;;;
+
+;;;###autoload
+(defun narf:kill-real-buffer ()
+  "Kill buffer (but only bury scratch buffer), then switch to a living buffer."
+  (interactive)
+  (let ((bname (buffer-name)))
+    (cond ((string-match-p "^\\*scratch\\*" bname)
+           (erase-buffer)
+           (bury-buffer))
+          ((string-equal "*" (substring bname 0 1)))
+          (t (kill-this-buffer))))
+  (unless (narf/real-buffer-p (current-buffer))
+    (narf/previous-real-buffer)))
+
+;;;###autoload
+(defun narf/get-visible-buffers (&optional buffer-list)
+  "Get a list of buffers that are not buried (i.e. visible)"
+  (-remove #'get-buffer-window (or buffer-list (buffer-list))))
+
+;;;###autoload
+(defun narf/get-buried-buffers (&optional buffer-list)
+  "Get a list of buffers that are buried (i.e. not visible)"
+  (-filter #'get-buffer-window (or buffer-list (buffer-list))))
+
+;;;###autoload
+(defun narf/get-matching-buffers (pattern &optional buffer-list)
+  "Get a list of buffers that match the pattern"
+  (--filter (string-match-p pattern (buffer-name it)) (or buffer-list (buffer-list))))
+
+;;;###autoload
+(defun narf/get-real-buffers(&optional buffer-list)
+  (-filter (lambda (buffer)
+             (not (--any? (if (stringp it)
+                              (string-match-p it (buffer-name buffer))
+                            (eq (buffer-local-value 'major-mode buffer) it))
+                          narf-unreal-buffers)))
+            (or buffer-list (buffer-list))))
+
+;;;###autoload
+(defun narf:kill-unreal-buffers ()
+  "Kill all buried, unreal buffers in current frame. See `narf-unreal-buffers'"
+  (interactive)
+  (let* ((real-buffers (narf/get-real-buffers))
+         (kill-list (--filter (not (memq it real-buffers)) narf/get-buried-buffers)))
+    (message "Cleaned up %s buffers" (length kill-list))
+    (mapc 'kill-buffer kill-list)
+    (narf:kill-process-buffers)))
+
+;;;###autoload
+(defun narf:kill-process-buffers ()
+  "Kill all buffers that represent running processes and aren't visible."
+  (interactive)
+  (let ((buffer-list (buffer-list)))
+    (dolist (p (process-list))
+      (let* ((process-name (process-name p))
+             (assoc (assoc process-name narf-cleanup-processes-alist)))
+        (when (and assoc
+                   (not (string= process-name "server"))
+                   (process-live-p p)
+                   (not (--any? (let ((mode (buffer-local-value 'major-mode it)))
+                                  (eq mode (cdr assoc)))
+                                buffer-list)))
+          (message "Cleanup: killing %s" process-name)
+          (delete-process p))))))
+
+;;;###autoload
+(defun narf:kill-matching-buffers (regexp &optional buffer-list)
+  (interactive)
+  (mapc (lambda (b)
+          (if (string-match-p regexp (buffer-name b))
+              (kill-buffer b)))
+        (if buffer-list buffer-list (buffer-list))))
+
+;;;###autoload
+(defun narf/cycle-real-buffers (&optional n)
+  "Switch to the previous buffer and avoid special buffers. If there's nothing
+left, create a scratch buffer."
+  (let ((start-buffer (current-buffer))
+        (move-func (if (< n 0) 'switch-to-next-buffer 'switch-to-prev-buffer))
+        (real-buffers (narf/get-real-buffers)))
+    (funcall move-func)
+    (while (let ((current-buffer (current-buffer)))
+             (and (if (eq current-buffer start-buffer)
+                      (ignore (switch-to-buffer "*scratch*"))
+                    t)
+                  (not (= n 0))
+                  (not (eq current-buffer start-buffer))
+                  (not (memq current-buffer real-buffers))))
+      (setq n (1- n))
+      (funcall move-func))))
+
+;;;###autoload
+(defun narf/real-buffer-p (&optional buffer-or-name)
+  (let ((buffer (if buffer-or-name (get-buffer buffer-or-name) (current-buffer))))
+    (when (buffer-live-p buffer)
+      (not (--any? (if (stringp it)
+                       (string-match-p it (buffer-name buffer))
+                     (eq (buffer-local-value 'major-mode buffer) it))
+                   narf-unreal-buffers)))))
+
+;; From spacemacs <https://github.com/syl20bnr/spacemacs/blob/master/spacemacs/funcs.el>
+;;;###autoload
+(defun narf/next-real-buffer ()
+  "Switch to the next buffer and avoid special buffers."
+  (interactive)
+  (narf/cycle-real-buffers +1))
+
+;;;###autoload
+(defun narf/previous-real-buffer ()
+  "Switch to the previous buffer and avoid special buffers."
+  (interactive)
+  (narf/cycle-real-buffers -1))
+
+;;;###autoload (autoload 'narf:kill-buried-buffers "defuns-buffers" nil t)
+(evil-define-command narf:kill-buried-buffers (&optional bang)
+  :repeat nil
+  (interactive "<!>")
+  (narf:kill-buried-buffers)
+  (mapc 'kill-buffer
+        (narf/get-buried-buffers (if bang (projectile-project-buffers) (buffer-list)))))
+
+;;;###autoload (autoload 'narf:kill-all-buffers "defuns-buffers" nil t)
+(evil-define-command narf:kill-all-buffers (&optional bang)
+  "Kill all project buffers. If BANG, kill *all* buffers."
+  :repeat nil
+  (interactive "<!>")
+  (if (and (not bang) (projectile-project-p))
+      (projectile-kill-buffers)
+    (mapc 'kill-buffer (buffer-list)))
+  (delete-other-windows)
+  (unless (narf/real-buffer-p)
+    (narf/previous-real-buffer)))
+
+;;;###autoload (autoload 'narf:scratch-buffer "defuns-buffers" nil t)
+(evil-define-operator narf:scratch-buffer (&optional beg end bang)
+  "Send a selection to the scratch buffer. If BANG, then send it to org-capture
+  instead."
+  :move-point nil
+  :type inclusive
+  (interactive "<r><!>")
+  (let ((mode major-mode)
+        (text (when (and (evil-visual-state-p) beg end)
+                (buffer-substring beg end))))
+    (if bang
+        ;; use org-capture with bang
+        (if text
+            (org-capture-string text)
+          (org-capture))
+      ;; or scratch buffer by default
+      (let* ((project-dir (narf/project-root t))
+             (buffer-name "*scratch*"))
+        (popwin:popup-buffer (get-buffer-create buffer-name))
+        (when (eq (get-buffer buffer-name) (current-buffer))
+          (when project-dir
+            (cd project-dir))
+          (if text (insert text))
+          (funcall mode))))))
+
+;;;###autoload (autoload 'narf:cd "defuns-buffers" nil t)
+(evil-define-command narf:cd (dir)
+  :repeat nil
+  (interactive "<f>")
+  (cd (if (zerop (length dir)) "~" dir)))
+
+(provide 'defuns-buffers)
+;;; defuns-buffers.el ends here