code.delx.au - gnu-emacs-elpa/blob - async-bytecomp.el

   1 ;;; async-bytecomp.el --- Async functions to compile elisp files async
   2
   3 ;; Copyright (C) 2014 John Wiegley
   4 ;; Copyright (C) 2014 Thierry Volpiatto
   5
   6 ;; Authors: John Wiegley <jwiegley@gmail.com>
   7 ;;          Thierry Volpiatto <thierry.volpiatto@gmail.com>
   8
   9 ;; Version: 1.0
  10 ;; Keywords: dired async byte-compile
  11 ;; X-URL: https://github.com/jwiegley/dired-async
  12
  13 ;; This program is free software; you can redistribute it and/or
  14 ;; modify it under the terms of the GNU General Public License as
  15 ;; published by the Free Software Foundation; either version 2, or (at
  16 ;; your option) any later version.
  17
  18 ;; This program is distributed in the hope that it will be useful, but
  19 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
  20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  21 ;; General Public License for more details.
  22
  23 ;; You should have received a copy of the GNU General Public License
  24 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  25 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  26 ;; Boston, MA 02111-1307, USA.
  27
  28 ;;; Commentary:
  29 ;;
  30 ;;  This package provide the `async-byte-recompile-directory' function
  31 ;;  which allows, as the name says to recompile a directory outside of
  32 ;;  your running emacs.
  33 ;;  The benefit is your files will be compiled in a clean environment without
  34 ;;  the old *.el files loaded.
  35 ;;  Among other things, this fix a bug in package.el which recompile
  36 ;;  the new files in the current environment with the old files loaded, creating
  37 ;;  errors in most packages after upgrades.
  38 ;;
  39 ;;  NB: This package is advicing the function `package--compile'.
  40
  41 ;;; Code:
  42
  43 (require 'async)
  44
  45 (defvar async-byte-compile-log-file "/tmp/async-bytecomp.log")
  46
  47 (defun async-byte-recompile-directory (directory &optional arg force)
  48   (cl-loop with dir = (directory-files directory t "\\.elc\\'")
  49            unless dir return nil
  50            for f in dir
  51            when (file-exists-p f) do (delete-file f))
  52   (let ((call-back
  53          `(lambda (&optional ignore)
  54             (if (file-exists-p async-byte-compile-log-file)
  55                 (progn
  56                   (pop-to-buffer (generate-new-buffer-name
  57                                   byte-compile-log-buffer))
  58                   (erase-buffer)
  59                   (insert-file-contents async-byte-compile-log-file)
  60                   (compilation-mode)
  61                   (delete-file async-byte-compile-log-file)
  62                   (let ((n 0))
  63                     (save-excursion
  64                       (goto-char (point-min))
  65                       (while (re-search-forward "^.*:Error:" nil t)
  66                         (incf n)))
  67                     (when (> n 0)
  68                       (message "Failed to compile %d files in directory `%s'" n ,directory))))
  69                 (message "Directory `%s' compiled asynchronously with success" ,directory)))))
  70     (async-start
  71      `(lambda ()
  72         (require 'bytecomp)
  73         ,(async-inject-variables "\\`load-path\\'")
  74         (let ((default-directory (file-name-as-directory ,directory))
  75               error-data)
  76           (add-to-list 'load-path default-directory)
  77           (byte-recompile-directory ,directory ,arg ,force)
  78           (when (get-buffer byte-compile-log-buffer)
  79             (setq error-data (with-current-buffer byte-compile-log-buffer
  80                                (buffer-substring-no-properties (point-min) (point-max))))
  81             (unless (string= error-data "")
  82               (with-temp-file ,async-byte-compile-log-file
  83                 (erase-buffer)
  84                 (insert error-data))))))
  85      call-back)
  86     (message "Started compiling asynchronously directory %s..." directory)))
  87
  88 (defadvice package--compile (around byte-compile-async activate)
  89   (package-activate-1 pkg-desc)
  90   (async-byte-recompile-directory (package-desc-dir pkg-desc) 0 t))
  91
  92 (provide 'async-bytecomp)
  93
  94 ;;; async-bytecomp.el ends here