[Emacs-diffs] emacs/lisp/eshell em-unix.el

[Michael Albinus]

CVSROOT:        /sources/emacs
Module name:    emacs
Changes by:     Michael Albinus <albinus>       09/11/27 16:28:42

Modified files:
        lisp/eshell    : em-unix.el 

Log message:
        * eshell/em-unix.el (eshell/su, eshell/sudo): New defuns,
        providing a Tramp related implementation of "su" and "sudo".
        (eshell-unix-initialize): Add "su" and "sudo".

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/emacs/lisp/eshell/em-unix.el?cvsroot=emacs&r1=1.46&r2=1.47

Patches:
Index: em-unix.el
===================================================================
RCS file: /sources/emacs/emacs/lisp/eshell/em-unix.el,v
retrieving revision 1.46
retrieving revision 1.47
diff -u -b -r1.46 -r1.47
--- em-unix.el  24 Nov 2009 10:25:58 -0000      1.46
+++ em-unix.el  27 Nov 2009 16:28:42 -0000      1.47
@@ -145,7 +145,7 @@
   (make-local-variable 'eshell-complex-commands)
   (setq eshell-complex-commands
        (append '("grep" "egrep" "fgrep" "agrep" "glimpse" "locate"
-                 "cat" "time" "cp" "mv" "make" "du" "diff")
+                 "cat" "time" "cp" "mv" "make" "du" "diff" "su" "sudo")
                eshell-complex-commands)))
 
 (defalias 'eshell/date     'current-time-string)
@@ -1041,6 +1041,66 @@
 
 (put 'eshell/occur 'eshell-no-numeric-conversions t)
 
+;; Pacify the byte-compiler.
+(defvar tramp-default-proxies-alist)
+
+(defun eshell/su (&rest args)
+  "Alias \"su\" to call Tramp."
+  (let ((-login (member "-" args)) ;; not handled by 
`eshell-eval-using-options'
+       login)
+    (eshell-eval-using-options
+     "sudo" args
+     '((?h "help" nil nil "show this usage screen")
+       (?l "login" nil login "provide a login environment")
+       (?  nil nil login "provide a login environment")
+       :usage "[- | -l | --login] [USER]
+Become another USER during a login session.")
+     (throw 'eshell-replace-command
+           (let ((user "root")
+                 (host (or (file-remote-p default-directory 'host)
+                           "localhost"))
+                 (dir (or (file-remote-p default-directory 'localname)
+                          default-directory)))
+             (if (or login -login) (setq dir "~/"))
+             (if (stringp (car args)) (setq user (car args)))
+             (if (and (file-remote-p default-directory)
+                      (not (string-equal
+                            user (file-remote-p default-directory 'user))))
+                 (add-to-list
+                  'tramp-default-proxies-alist
+                  (list host user (file-remote-p default-directory))))
+             (eshell-parse-command
+              "eshell/cd" (list (format "/su:address@hidden:%s" user host 
dir))))))))
+
+(put 'eshell/su 'eshell-no-numeric-conversions t)
+
+(defun eshell/sudo (&rest args)
+  "Alias \"sudo\" to call Tramp."
+  (let (user)
+    (eshell-eval-using-options
+     "sudo" args
+     '((?h "help" nil nil "show this usage screen")
+       (?u "user" t user "execute a command as another USER")
+       :show-usage
+       :usage "[(-u | --user) USER] COMMAND
+Execute a COMMAND as the superuser or another USER.")
+     (throw 'eshell-external
+           (let* ((user (or user "root"))
+                  (host (or (file-remote-p default-directory 'host)
+                            "localhost"))
+                  (dir (or (file-remote-p default-directory 'localname)
+                           default-directory))
+                  (default-directory (format "/sudo:address@hidden:%s" user 
host dir)))
+             (if (and (file-remote-p default-directory)
+                      (not (string-equal
+                            user (file-remote-p default-directory 'user))))
+                 (add-to-list
+                  'tramp-default-proxies-alist
+                  (list host user (file-remote-p default-directory))))
+             (eshell-named-command (car args) (cdr args)))))))
+
+(put 'eshell/sudo 'eshell-no-numeric-conversions t)
+
 (provide 'em-unix)
 
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