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;;; em-script.el --- Eshell script files
;; Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
;; 2008, 2009 Free Software Foundation, Inc.
;; Author: John Wiegley <johnw@gnu.org>
;; This file is part of GNU Emacs.
;; GNU Emacs 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.
;; GNU Emacs 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 GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;; Code:
(require 'eshell)
;;;###autoload
(eshell-defgroup eshell-script nil
"This module allows for the execution of files containing Eshell
commands, as a script file."
:tag "Running script files."
:group 'eshell-module)
;;; User Variables:
(defcustom eshell-script-load-hook '(eshell-script-initialize)
"*A list of functions to call when loading `eshell-script'."
:type 'hook
:group 'eshell-script)
(defcustom eshell-login-script (concat eshell-directory-name "login")
"*If non-nil, a file to invoke when starting up Eshell interactively.
This file should be a file containing Eshell commands, where comment
lines begin with '#'."
:type 'file
:group 'eshell-script)
(defcustom eshell-rc-script (concat eshell-directory-name "profile")
"*If non-nil, a file to invoke whenever Eshell is started.
This includes when running `eshell-command'."
:type 'file
:group 'eshell-script)
;;; Functions:
(defun eshell-script-initialize ()
"Initialize the script parsing code."
(make-local-variable 'eshell-interpreter-alist)
(setq eshell-interpreter-alist
(cons '((lambda (file)
(string= (file-name-nondirectory file)
"eshell")) . eshell/source)
eshell-interpreter-alist))
(make-local-variable 'eshell-complex-commands)
(setq eshell-complex-commands
(append '("source" ".") eshell-complex-commands))
;; these two variables are changed through usage, but we don't want
;; to ruin it for other modules
(let (eshell-inside-quote-regexp
eshell-outside-quote-regexp)
(and (not eshell-non-interactive-p)
eshell-login-script
(file-readable-p eshell-login-script)
(eshell-do-eval
(list 'eshell-commands
(catch 'eshell-replace-command
(eshell-source-file eshell-login-script))) t))
(and eshell-rc-script
(file-readable-p eshell-rc-script)
(eshell-do-eval
(list 'eshell-commands
(catch 'eshell-replace-command
(eshell-source-file eshell-rc-script))) t))))
(defun eshell-source-file (file &optional args subcommand-p)
"Execute a series of Eshell commands in FILE, passing ARGS.
Comments begin with '#'."
(interactive "f")
(let ((orig (point))
(here (point-max))
(inhibit-point-motion-hooks t)
after-change-functions)
(goto-char (point-max))
(insert-file-contents file)
(goto-char (point-max))
(throw 'eshell-replace-command
(prog1
(list 'let
(list (list 'eshell-command-name (list 'quote file))
(list 'eshell-command-arguments
(list 'quote args)))
(let ((cmd (eshell-parse-command (cons here (point)))))
(if subcommand-p
(setq cmd (list 'eshell-as-subcommand cmd)))
cmd))
(delete-region here (point))
(goto-char orig)))))
(defun eshell/source (&rest args)
"Source a file in a subshell environment."
(eshell-eval-using-options
"source" args
'((?h "help" nil nil "show this usage screen")
:show-usage
:usage "FILE [ARGS]
Invoke the Eshell commands in FILE in a subshell, binding ARGS to $1,
$2, etc.")
(eshell-source-file (car args) (cdr args) t)))
(put 'eshell/source 'eshell-no-numeric-conversions t)
(defun eshell/. (&rest args)
"Source a file in the current environment."
(eshell-eval-using-options
"." args
'((?h "help" nil nil "show this usage screen")
:show-usage
:usage "FILE [ARGS]
Invoke the Eshell commands in FILE within the current shell
environment, binding ARGS to $1, $2, etc.")
(eshell-source-file (car args) (cdr args))))
(put 'eshell/. 'eshell-no-numeric-conversions t)
(provide 'em-script)
;; Local Variables:
;; generated-autoload-file: "esh-groups.el"
;; End:
;; arch-tag: a346439d-5ba8-4faf-ac2b-3aacfeaa4647
;;; em-script.el ends here