[bpt/emacs.git] / lisp / ns-grabenv.el

;;; ns-grabenv.el --- functions to set environment variables by running a subshell
;;; Copyright (C) 1993, 1994, 2005, 2006, 2008 Free Software Foundation, Inc.

;;; Author: Carl Edman, Christian Limpach, Scott Bender, Christophe de Dinechin,
;;;         Adrian Robert
;;; Keywords: terminals

;;; 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, 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; see the file COPYING.  If not, write to
;;; the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;;; Boston, MA 02110-1301, USA.

;;; Idea based on NS 4.2 distribution, this version of code based on
;;; mac-read-environment-vars-from-shell () by David Reitter in Aquamacs dist..


;; utility function
(defun ns-make-command-string (cmdlist)
  (let ((str "")
	(cmds cmdlist))
    (while cmds
      (if (not (eq str "")) (setq str (format "%s ; " str)))
      (setq str (format "%s%s" str (car cmds)))
      (setq cmds (cdr cmds)))
    str))


;;;###autoload
(defun ns-grabenv (&optional shell-path &optional startup)
  "Run a shell subprocess, and interpret its output as a series of environment\n\
variables to insert into the emacs environment.  The first optional argument\n\
gives the path to the shell (defaults to the current setting of\n\
shell-file-name).  The remaining arguments are interpreted as a list of\n\
commands for it to execute (defaults to \"printenv\")."
  (interactive)
  (with-temp-buffer
    (let ((shell-file-name (if shell-path shell-path shell-file-name))
	  (cmd (ns-make-command-string (if startup startup '("printenv")))))
      (shell-command cmd t)
      (while (search-forward-regexp "^\\([A-Za-z_0-9]+\\)=\\(.*\\)$" nil t)
	(setenv (match-string 1)
		(if (equal (match-string 1) "PATH")
		    (concat (getenv "PATH") ":" (match-string 2))
		  (match-string 2)))))))

(provide 'ns-grabenv)

;;; ns-grabenv.el ends here

; (autoload (quote ns-grabenv) "ns-grabenv" "\
;  Run a shell subprocess, and interpret its output as a series of environment
; variables to insert into the emacs environment.  The first optional argument
; gives the path to the shell (defaults to the current setting of
; shell-file-name).  The remaining arguments are interpreted as a list of
; commands for it to execute (defaults to \"printenv\")." nil nil)

;; arch-tag: e65e1dd8-1566-460c-ad66-07948588be56
Commit	Line	Data
edfda783 AR	1	;;; ns-grabenv.el --- functions to set environment variables by running a subshell
	2	;;; Copyright (C) 1993, 1994, 2005, 2006, 2008 Free Software Foundation, Inc.
	3
	4	;;; Author: Carl Edman, Christian Limpach, Scott Bender, Christophe de Dinechin,
	5	;;; Adrian Robert
	6	;;; Keywords: terminals
	7
	8	;;; This file is part of GNU Emacs.
	9	;;;
	10	;;; GNU Emacs is free software; you can redistribute it and/or modify
	11	;;; it under the terms of the GNU General Public License as published by
	12	;;; the Free Software Foundation; either version 3, or (at your option)
	13	;;; any later version.
	14	;;;
	15	;;; GNU Emacs is distributed in the hope that it will be useful,
	16	;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	;;; GNU General Public License for more details.
	19	;;;
	20	;;; You should have received a copy of the GNU General Public License
	21	;;; along with GNU Emacs; see the file COPYING. If not, write to
	22	;;; the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
	23	;;; Boston, MA 02110-1301, USA.
	24
	25	;;; Idea based on NS 4.2 distribution, this version of code based on
	26	;;; mac-read-environment-vars-from-shell () by David Reitter in Aquamacs dist..
	27
	28
	29	;; utility function
	30	(defun ns-make-command-string (cmdlist)
	31	(let ((str "")
	32	(cmds cmdlist))
	33	(while cmds
	34	(if (not (eq str "")) (setq str (format "%s ; " str)))
	35	(setq str (format "%s%s" str (car cmds)))
	36	(setq cmds (cdr cmds)))
	37	str))
	38
	39
	40	;;;###autoload
	41	(defun ns-grabenv (&optional shell-path &optional startup)
	42	"Run a shell subprocess, and interpret its output as a series of environment\n\
	43	variables to insert into the emacs environment. The first optional argument\n\
	44	gives the path to the shell (defaults to the current setting of\n\
	45	shell-file-name). The remaining arguments are interpreted as a list of\n\
	46	commands for it to execute (defaults to \"printenv\")."
	47	(interactive)
	48	(with-temp-buffer
	49	(let ((shell-file-name (if shell-path shell-path shell-file-name))
	50	(cmd (ns-make-command-string (if startup startup '("printenv")))))
	51	(shell-command cmd t)
	52	(while (search-forward-regexp "^\\([A-Za-z_0-9]+\\)=\\(.*\\)$" nil t)
	53	(setenv (match-string 1)
	54	(if (equal (match-string 1) "PATH")
	55	(concat (getenv "PATH") ":" (match-string 2))
	56	(match-string 2)))))))
	57
	58	(provide 'ns-grabenv)
	59
	60	;;; ns-grabenv.el ends here
	61
	62	; (autoload (quote ns-grabenv) "ns-grabenv" "\
	63	; Run a shell subprocess, and interpret its output as a series of environment
	64	; variables to insert into the emacs environment. The first optional argument
65	; gives the path to the shell (defaults to the current setting of
66	; shell-file-name). The remaining arguments are interpreted as a list of
67	; commands for it to execute (defaults to \"printenv\")." nil nil)
0ae1e5e5 MB	68
0ae1e5e5 MB	69	;; arch-tag: e65e1dd8-1566-460c-ad66-07948588be56