308 lines
12 KiB
EmacsLisp
308 lines
12 KiB
EmacsLisp
;;; core-spacemacs-mode.el --- Spacemacs Core File
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;;
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;; Copyright (c) 2012-2014 Sylvain Benner
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;; Copyright (c) 2014-2015 Sylvain Benner & Contributors
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;;
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;; Author: Sylvain Benner <sylvain.benner@gmail.com>
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;; URL: https://github.com/syl20bnr/spacemacs
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;;
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;; This file is not part of GNU Emacs.
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;;
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;;; License: GPLv3
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(setq message-log-max 16384)
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(defconst emacs-start-time (current-time))
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(require 'subr-x nil 'noerror)
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(require 'core-emacs-backports)
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(require 'core-themes-support)
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(require 'core-fonts-support)
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(require 'core-spacemacs-buffer)
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(defconst spacemacs-repository "spacemacs"
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"Name of the Spacemacs remote repository.")
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(defconst spacemacs-repository-owner "syl20bnr"
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"Name of the Spacemacs remote repository owner.")
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(defconst spacemacs-checkversion-remote "checkversion"
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"Name of the remote repository used to check for new version.")
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(defconst spacemacs-checkversion-branch "master"
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"Name of the branch used to check for new version.")
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(defgroup spacemacs nil
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"Spacemacs customizations."
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:group 'starter-kit
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:prefix 'spacemacs-)
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;; new version variables
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(defvar spacemacs-new-version nil
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"If non-nil a new Spacemacs version is available.")
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(defvar spacemacs-version-check-timer nil
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"The current timer for new version check.")
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(defvar spacemacs-version-check-interval "6 hours"
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"Time between two version checks.")
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(defvar spacemacs-version-check-lighter "[+]"
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"Text displayed in the mode-line when a new version is available.")
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;; loading progress bar variables
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(defvar spacemacs-title-length 75)
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(defvar spacemacs-loading-counter 0)
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(defvar spacemacs-loading-text "Loading")
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(defvar spacemacs-loading-done-text "Ready!")
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(defvar spacemacs-loading-dots-chunk-count 3)
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(defvar spacemacs-loading-dots-count
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(- spacemacs-title-length
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(length spacemacs-loading-text)
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(length spacemacs-loading-done-text)))
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(defvar spacemacs-loading-dots-chunk-size
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(/ spacemacs-loading-dots-count spacemacs-loading-dots-chunk-count))
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(defvar spacemacs-loading-dots-chunk-threshold 0)
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(defvar spacemacs-solarized-dark-createdp nil)
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(define-derived-mode spacemacs-mode special-mode "Spacemacs"
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"Spacemacs major mode for startup screen."
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:syntax-table nil
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:abbrev-table nil
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(setq truncate-lines t)
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(setq cursor-type nil)
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;; no welcome buffer
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(setq inhibit-startup-screen t)
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;; default theme
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(let ((default-theme (car dotspacemacs-themes)))
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(spacemacs/load-theme default-theme)
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(setq-default spacemacs--cur-theme default-theme)
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(setq-default spacemacs--cycle-themes (cdr dotspacemacs-themes)))
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;; remove GUI elements if supported
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(when window-system
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;; those unless tests are for the case when the user has a ~/.emacs file
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;; were he/she ;; removes the GUI elements
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(unless (eq tool-bar-mode -1)
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(tool-bar-mode -1))
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(unless (eq scroll-bar-mode -1)
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(scroll-bar-mode -1))
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;; tooltips in echo-aera
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(unless (eq tooltip-mode -1)
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(tooltip-mode -1))
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(setq tooltip-use-echo-area t))
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(unless (eq window-system 'mac)
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(menu-bar-mode -1))
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;; for convenience and user support
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(unless (boundp 'tool-bar-mode)
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(spacemacs/message (concat "No graphical support detected, you won't be"
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"able to launch a graphical instance of Emacs"
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"with this build.")))
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;; font
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(when (member (car dotspacemacs-default-font) (font-family-list))
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(spacemacs/set-default-font dotspacemacs-default-font))
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;; banner
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(spacemacs//insert-banner)
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;; bind-key is required by use-package
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(spacemacs/load-or-install-package 'bind-key t)
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(spacemacs/load-or-install-package 'use-package t)
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;; evil and evil-leader must be installed at the beginning of the boot sequence
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;; use C-u as scroll-up (must be set before actually loading evil)
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(setq-default evil-want-C-u-scroll t)
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(setq-default evil-want-fine-undo nil)
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(spacemacs/load-or-install-package 'evil t)
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(spacemacs/load-or-install-package 'evil-leader t)
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;; check for new version
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(if dotspacemacs-mode-line-unicode-symbols
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(setq-default spacemacs-version-check-lighter "[⇪]"))
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(spacemacs/set-new-version-lighter-mode-line-faces)
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;; motion state since this is a special mode
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(add-to-list 'evil-motion-state-modes 'spacemacs-mode))
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(defun spacemacs/initialize ()
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"Create the special buffer for `spacemacs-mode' and perform startup
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initialization."
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(switch-to-buffer (get-buffer-create "*spacemacs*"))
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(spacemacs-mode))
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(defun spacemacs//get-package-directory (pkg)
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"Return the directory of PKG. Return nil if not found."
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(let ((elpa-dir (concat user-emacs-directory "elpa/")))
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(when (file-exists-p elpa-dir)
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(let ((dir (reduce (lambda (x y) (if x x y))
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(mapcar (lambda (x)
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(if (string-match
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(concat "/" (symbol-name pkg) "-") x) x))
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(directory-files elpa-dir 'full))
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:initial-value nil)))
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(if dir (file-name-as-directory dir))))))
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(defun spacemacs/load-or-install-package (pkg &optional log file-to-load)
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"Load PKG package. PKG will be installed if it is not already installed.
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Whenever the initial require fails the absolute path to the package
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directory is returned.
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If LOG is non-nil a message is displayed in spacemacs-mode buffer.
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FILE-TO-LOAD is an explicit file to load after the installation."
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(condition-case nil
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(require pkg)
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(error
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;; not installed, we try to initialize package.el only if required to
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;; precious seconds during boot time
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(require 'cl)
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(let ((pkg-elpa-dir (spacemacs//get-package-directory pkg)))
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(if pkg-elpa-dir
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(add-to-list 'load-path pkg-elpa-dir)
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;; install the package
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(when log
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(spacemacs/append-to-buffer
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(format "(Bootstrap) Installing %s...\n" pkg))
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(redisplay))
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(package-refresh-contents)
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(package-install pkg)
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(setq pkg-elpa-dir (spacemacs//get-package-directory pkg)))
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(require pkg nil 'noerror)
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(when file-to-load
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(load-file (concat pkg-elpa-dir file-to-load)))
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pkg-elpa-dir))))
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(defun spacemacs/display-and-copy-version ()
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"Echo the current spacemacs version and copy it."
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(interactive)
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(let ((msg (format "Spacemacs v.%s" spacemacs-version)))
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(message msg) (kill-new msg)))
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(defun display-startup-echo-area-message ()
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"Change the default welcome message of minibuffer to another one."
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(message "Spacemacs is ready."))
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(defun spacemacs/get-last-version (repo owner remote branch)
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"Return the last tagged version of BRANCH on REMOTE repository from
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OWNER REPO."
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(let ((url (format "http://github.com/%s/%s" owner repo)))
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(unless (spacemacs/git-has-remote remote)
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(spacemacs/git-declare-remote remote url)))
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(spacemacs/git-fetch-tags remote branch)
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(let ((version (spacemacs/git-latest-tag remote branch)))
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(when version
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(save-match-data
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(string-match "^.*\\([0-9]+\\.[0-9]+\\.[0-9]+\\)$" version)
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(match-string 1 version)))))
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(defun spacemacs/check-for-new-version (&optional interval)
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"Periodicly check for new for new Spacemacs version.
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Update `spacemacs-new-version' variable if any new version has been
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found."
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(message "Start checking for new version...")
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(async-start
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(lambda ()
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(add-to-list 'load-path (concat user-emacs-directory "core/"))
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(require 'core-spacemacs-mode)
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(spacemacs/get-last-version spacemacs-repository
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spacemacs-repository-owner
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spacemacs-checkversion-remote
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spacemacs-checkversion-branch))
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(lambda (result)
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(when result
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(unless (or (version< result spacemacs-version)
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(string= result spacemacs-version)
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(if spacemacs-new-version
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(string= result spacemacs-new-version)))
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(message "New version of Spacemacs available: %s" result)
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(setq spacemacs-new-version result)))))
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(when interval
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(setq spacemacs-version-check-timer
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(run-at-time t (timer-duration interval)
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'spacemacs/check-for-new-version))))
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(defun spacemacs/git-has-remote (remote)
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"Return non nil if REMOTE is declared."
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(let((proc-buffer "git-has-remote")
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(default-directory user-emacs-directory))
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(when (eq 0 (process-file "git" nil proc-buffer nil "remote"))
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(with-current-buffer proc-buffer
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(prog2
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(goto-char (point-min))
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(re-search-forward (format "^%s$" remote) nil 'noerror)
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(kill-buffer proc-buffer))))))
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(defun spacemacs/git-declare-remote (remote url)
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"Declare a new REMOTE pointing to URL, return t if no error."
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(let((proc-buffer "git-declare-remote")
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(default-directory user-emacs-directory))
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(prog1
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(eq 0 (process-file "git" nil proc-buffer nil
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"remote" "add" remote url))
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(kill-buffer proc-buffer))))
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(defun spacemacs/git-fetch-tags (remote branch)
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"Fetch the tags for BRANCH in REMOTE repository."
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(let((proc-buffer "git-fetch-tags")
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(default-directory user-emacs-directory))
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(prog2
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(eq 0 (process-file "git" nil proc-buffer nil
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"fetch" remote branch))
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;; explicitly fetch the new tags
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(eq 0 (process-file "git" nil proc-buffer nil
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"fetch" "--tags" remote branch))
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(kill-buffer proc-buffer))))
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(defun spacemacs/git-latest-tag (remote branch)
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"Returns the latest tag on REMOTE/BRANCH."
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(let((proc-buffer "git-latest-tag")
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(default-directory user-emacs-directory)
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(where (format "%s/%s" remote branch)))
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(when (eq 0 (process-file "git" nil proc-buffer nil
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"describe" "--tags" "--abbrev=0"
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"--match=v*" where "FETCH_HEAD"))
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(with-current-buffer proc-buffer
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(prog1
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(when (buffer-string)
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(end-of-buffer)
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(forward-line -1)
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(replace-regexp-in-string
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"\n$" ""
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(buffer-substring (line-beginning-position)
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(line-end-position))))
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(kill-buffer proc-buffer))))))
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(defun spacemacs//deffaces-new-version-lighter (state)
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"Define a new version lighter face for the given STATE."
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(let* ((fname (intern (format "spacemacs-mode-line-new-version-lighter-%s-face"
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(symbol-name state))))
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(foreground (face-foreground state)))
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(eval `(defface ,fname '((t ()))
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,(format "Color for new version lighter in mode line (%s)."
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(symbol-name state))
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:group 'spacemacs))
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(set-face-attribute fname nil
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:foreground foreground
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:box (face-attribute 'mode-line :box))))
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(defun spacemacs/set-new-version-lighter-mode-line-faces ()
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"Define or set the new version lighter mode-line faces."
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(mapcar 'spacemacs//deffaces-new-version-lighter
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'(error warning success)))
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(spacemacs/set-new-version-lighter-mode-line-faces)
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(defun spacemacs//compute-version-score (version)
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"Returns an integer from the version list.
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Example: (1 42 3) = 1 042 003"
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(let ((result 0)
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(rev (reverse version)))
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(dotimes (i 3)
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(setq result (+ result (* (nth i rev) (expt 10 (* i 3))))))
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result))
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(defun spacemacs//compute-version-score (version)
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"Returns an integer from the version list.
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Example: (1 42 3) = 1 042 003"
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(let ((i -1))
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(reduce '+ (mapcar (lambda (n) (setq i (1+ i)) (* n (expt 10 (* i 3))))
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(reverse version)))))
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(defun spacemacs/get-new-version-lighter-face (current new)
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"Return the new version lighter face given the difference between the CURRENT
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version and the NEW version."
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(let* ((lcur (version-to-list current))
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(lnew (version-to-list new))
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(scur (spacemacs//compute-version-score lcur))
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(snew (spacemacs//compute-version-score lnew))
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(diff (- snew scur)))
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(cond
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((< diff 3000) 'spacemacs-mode-line-new-version-lighter-success-face)
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((< diff 5000) 'spacemacs-mode-line-new-version-lighter-warning-face)
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(t 'spacemacs-mode-line-new-version-lighter-error-face))))
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(provide 'core-spacemacs-mode)
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