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146 lines
4.5 KiB
EmacsLisp
146 lines
4.5 KiB
EmacsLisp
;;; esh-module --- Eshell modules
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;; Copyright (C) 1999, 2000 Free Software Foundation
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;; Author: John Wiegley <johnw@gnu.org>
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;; Keywords: processes
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;; X-URL: http://www.emacs.org/~johnw/eshell.html
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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(provide 'esh-module)
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(eval-when-compile (require 'esh-maint) (require 'cl))
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(defgroup eshell-module nil
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"The `eshell-module' group is for Eshell extension modules, which
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provide optional behavior which the user can enable or disable by
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customizing the variable `eshell-modules-list'."
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:tag "Extension modules"
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:group 'eshell)
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;;; Commentary:
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(require 'esh-util)
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(defun eshell-load-defgroups (&optional directory)
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"Load `defgroup' statements from Eshell's module files."
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(with-current-buffer
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(find-file-noselect (expand-file-name "esh-groups.el" directory))
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(erase-buffer)
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(insert ";;; do not modify this file; it is auto-generated\n\n")
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(let ((files (directory-files (or directory
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(car command-line-args-left))
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nil "\\`em-.*\\.el\\'")))
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(while files
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(message "Loading defgroup from `%s'" (car files))
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(let (defgroup)
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(catch 'handled
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(with-current-buffer (find-file-noselect (car files))
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(goto-char (point-min))
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(while t
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(forward-sexp)
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(if (eobp) (throw 'handled t))
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(backward-sexp)
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(let ((begin (point))
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(defg (looking-at "(defgroup")))
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(forward-sexp)
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(if defg
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(setq defgroup (buffer-substring begin (point))))))))
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(if defgroup
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(insert defgroup "\n\n")))
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(setq files (cdr files))))
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(save-buffer)))
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;; load the defgroup's for the standard extension modules, so that
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;; documentation can be provided when the user customize's
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;; `eshell-modules-list'.
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(eval-when-compile
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(when (and (boundp 'byte-compile-current-file)
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byte-compile-current-file
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(equal (file-name-nondirectory byte-compile-current-file)
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"esh-module.el"))
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(let* ((directory (file-name-directory byte-compile-current-file))
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(elc-file (expand-file-name "esh-groups.elc" directory)))
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(eshell-load-defgroups directory)
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(if (file-exists-p elc-file) (delete-file elc-file)))))
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(load "esh-groups" t t)
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;;; User Variables:
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(defcustom eshell-module-unload-hook
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'(eshell-unload-extension-modules)
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"*A hook run when `eshell-module' is unloaded."
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:type 'hook
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:group 'eshell-module)
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(defcustom eshell-modules-list
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'(eshell-alias
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eshell-banner
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eshell-basic
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eshell-cmpl
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eshell-dirs
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eshell-glob
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eshell-hist
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eshell-ls
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eshell-pred
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eshell-prompt
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eshell-script
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eshell-term
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eshell-unix)
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"*A list of optional add-on modules to be loaded by Eshell.
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Changes will only take effect in future Eshell buffers."
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:type (append
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(list 'set ':tag "Supported modules")
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(mapcar
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(function
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(lambda (modname)
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(let ((modsym (intern modname)))
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(list 'const
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':tag (format "%s -- %s" modname
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(get modsym 'custom-tag))
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':link (caar (get modsym 'custom-links))
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':doc (concat "\n" (get modsym 'group-documentation)
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"\n ")
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modsym))))
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(sort (mapcar 'symbol-name
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(eshell-subgroups 'eshell-module))
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'string-lessp))
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'((repeat :inline t :tag "Other modules" symbol)))
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:group 'eshell-module)
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;;; Code:
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(defsubst eshell-using-module (module)
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"Return non-nil if a certain Eshell MODULE is in use.
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The MODULE should be a symbol corresponding to that module's
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customization group. Example: `eshell-cmpl' for that module."
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(memq module eshell-modules-list))
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(defun eshell-unload-extension-modules ()
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"Unload any memory resident extension modules."
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(eshell-for module (eshell-subgroups 'eshell-module)
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(if (featurep module)
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(ignore-errors
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(message "Unloading %s..." (symbol-name module))
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(unload-feature module)
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(message "Unloading %s...done" (symbol-name module))))))
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;;; esh-module.el ends here
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