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;;; g.el --- Adding shortcuts -*- lexical-binding: t; -*-
;;
;; Copyright (C) 2016-2021 Miquel Sabaté Solà <mikisabate@gmail.com>
;;
;; Author: Miquel Sabaté Solà <mikisabate@gmail.com>
;; Version: 0.1
;; Package-Requires: ((emacs "25.1"))
;; Keywords: abbrev, convenience
;; URL: https://github.com/mssola/dotfiles/.emacs.d/lisp/g.el
;;
;; This file is not part of GNU Emacs.
;;
;; This program is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;
;;; Commentary:
;;
;; This is a GNU Emacs port of my g.sh bash script that can be found here:
;; https://github.com/mssola/g. This package can be seen as useless given the
;; fantastic Helm + Projectile combo, but it still comes in handy when you want
;; to edit:
;; - A file which is in a project unknown to Projectile.
;; - A file that does not really belong to a real project.
;;; Code:
(defvar g-file "~/.gfile"
"The path to the gfile.")
;;; Utils
(defun g-read-file (file)
"Read the given FILE and return it as a list of lines."
(if (file-exists-p file)
(with-temp-buffer
(insert-file-contents file)
(split-string (buffer-string) "\n" t))
""))
(defun g-write (shortcuts)
"Write the given SHORTCUTS into the gfile."
(let ((output ""))
(maphash (lambda (key value)
(setq output
(concat output (format "%s\n%s\n" key value))))
shortcuts)
(write-region output nil g-file)))
(defun g-read ()
"Read all the shortcuts as defined by the gfile.
The returned object is a hash table."
(let ((shortcuts (make-hash-table :test 'equal))
(list (g-read-file g-file)))
;; The format of the file is a bit special because it was meant to be easily
;; parseable by Bash. It consists of pairs of lines, where n is the key, and
;; n+1 is the value.
(dotimes (i (/ (length list) 2))
(let ((n (* i 2)))
(puthash
(nth n list)
(nth (+ n 1) list)
shortcuts)))
shortcuts))
;;; Interactive functions
(defun g ()
"Go to the given directory with the supplied alias."
(interactive)
(if (file-exists-p g-file)
(progn
(let* ((shortcuts (g-read))
(alias (completing-read
"Give me the name: " shortcuts nil t)))
(find-file (gethash alias shortcuts))))
(message "Add a shortcut first!")))
(defun g-list ()
"List all the available shortcuts."
(interactive)
(let ((output ""))
(maphash (lambda (key value)
(setq output
(concat output (format "%s => %s\n" key value))))
(g-read))
(message output)))
(defun g-add ()
"Add a new shortcut."
(interactive)
(let ((shortcuts (g-read))
(to-create (read-string "Shortcut to create: ")))
(if (gethash to-create shortcuts)
(message "Error: shortcut already exists.")
(let ((path (read-file-name "Path: " nil nil t)))
(if (file-exists-p path)
(progn
(puthash to-create (file-truename path) shortcuts)
(g-write shortcuts))
(message "Error: given path does not exist."))))))
(defun g-remove ()
"Remove an existing shortcut."
(interactive)
(if (file-exists-p g-file)
(progn
(let* ((shortcuts (g-read))
(alias (completing-read
"Give me the shortcut to remove: " shortcuts nil t)))
(remhash alias shortcuts)
(g-write shortcuts)))
(message "There are no shortcuts!")))
(provide 'g)
;;; g.el ends here
|
