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;;; bookmark.el --- Saved files and directories on my filesystem -*- lexical-binding: t -*-
;; Author: William Carroll <wpcarro@gmail.com>
;;; Commentary:
;; After enjoying and relying on Emacs's builtin `jump-to-register' command, I'd
;; like to recreate this functionality with a few extensions.
;;
;; Everything herein will mimmick my previous KBDs for `jump-to-register', which
;; were <leader>-j-<register-kbd>. If the `bookmark-path' is a file, Emacs will
;; open a buffer with that file. If the `bookmark-path' is a directory, Emacs
;; will open an ivy window searching that directory.
;;; Code:
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Dependencies
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(require 'f)
(require 'buffer)
(require 'list)
(require 'string)
(require 'set)
(require 'constants)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Constants
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(cl-defstruct bookmark label path kbd)
(defconst bookmark/install-kbds? t
"When t, install keybindings.")
;; TODO: Consider hosting this function somewhere other than here, since it
;; feels useful above of the context of bookmarks.
;; TODO: Assess whether it'd be better to use the existing function:
;; `counsel-projectile-switch-project-action'. See the noise I made on GH for
;; more context: https://github.com/ericdanan/counsel-projectile/issues/137
(defun bookmark/handle-directory-dwim (path)
"Open PATH as either a project directory or a regular directory.
If PATH is `projectile-project-p', open with `counsel-projectile-find-file'.
Otherwise, open with `counsel-find-file'."
(if (projectile-project-p path)
(with-temp-buffer
(cd (projectile-project-p path))
(call-interactively #'counsel-projectile-find-file))
(let ((ivy-extra-directories nil))
(counsel-find-file path))))
(defconst bookmark/handle-directory #'bookmark/handle-directory-dwim
"Function to call when a bookmark points to a directory.")
(defconst bookmark/handle-file #'counsel-find-file-action
"Function to call when a bookmark points to a file.")
(defconst bookmark/whitelist
(list
(make-bookmark :label "depot"
:path "~/depot"
:kbd "t")
(make-bookmark :label "briefcase"
:path constants/briefcase
:kbd "b")
(make-bookmark :label "current project"
:path constants/current-project
:kbd "p"))
"List of registered bookmarks.")
(defun bookmark/from-label (label)
"Return the bookmark with LABEL or nil."
(->> bookmark/whitelist
(list/find (lambda (b) (equal label (bookmark-label b))))))
(defun bookmark/magit-status ()
"Use ivy to select a bookmark and jump to its `magit-status' buffer."
(interactive)
(let ((labels (set/new "briefcase" "depot"))
(all-labels (->> bookmark/whitelist
(list/map (>> bookmark-label))
set/from-list)))
(prelude/assert (set/subset? labels all-labels))
(ivy-read "Repository: "
(set/to-list labels)
:require-match t
:action (lambda (label)
(->> label
bookmark/from-label
bookmark-path
magit-status)))))
;; TODO: Consider `ivy-read' extension that takes a list of structs,
;; `struct-to-label' and `label-struct' functions.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; API
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defun bookmark/open (b)
"Open bookmark, B, in a new buffer or an ivy minibuffer."
(let ((path (bookmark-path b)))
(cond
((f-directory? path)
(funcall bookmark/handle-directory path))
((f-file? path)
(funcall bookmark/handle-file path)))))
(defun bookmark/ivy-open ()
"Use ivy to filter available bookmarks."
(interactive)
(ivy-read "Bookmark: "
(->> bookmark/whitelist
(list/map #'bookmark-label))
:require-match t
:action (lambda (label)
(bookmark/open (bookmark/from-label label)))))
(when bookmark/install-kbds?
(general-define-key
:prefix "<SPC>"
:states '(normal)
"jj" #'bookmark/ivy-open)
(->> bookmark/whitelist
(list/map
(lambda (b)
(general-define-key
:prefix "<SPC>"
:states '(normal)
(string/concat "j" (bookmark-kbd b))
;; TODO: Consider `cl-labels' so `which-key' minibuffer is more
;; helpful.
(lambda () (interactive) (bookmark/open b))))))
(general-define-key
:states '(normal)
:prefix "<SPC>"
"gS" #'bookmark/magit-status))
(provide 'bookmark)
;;; bookmark.el ends here
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