[Emacs-diffs] Changes to emacs/lisp/net/password.el

[Simon Josefsson]

Index: emacs/lisp/net/password.el
diff -c emacs/lisp/net/password.el:1.1 emacs/lisp/net/password.el:1.2
*** emacs/lisp/net/password.el:1.1      Fri Oct 15 19:35:38 2004
--- emacs/lisp/net/password.el  Mon Oct 25 13:21:58 2004
***************
*** 122,127 ****
--- 122,183 ----
                 key))
    nil)
  
+ ;;;###autoload
+ (defun read-passwd (prompt &optional confirm default)
+   "Read a password, prompting with PROMPT, and return it.
+ If optional CONFIRM is non-nil, read the password twice to make sure.
+ Optional DEFAULT is a default password to use instead of empty input.
+ 
+ This function echoes `.' for each character that the user types.
+ The user ends with RET, LFD, or ESC.  DEL or C-h rubs out.  C-u kills line.
+ C-g quits; if `inhibit-quit' was non-nil around this function,
+ then it returns nil if the user types C-g.
+ 
+ Once the caller uses the password, it can erase the password
+ by doing (clear-string STRING)."
+   (with-local-quit
+     (if confirm
+       (let (success)
+         (while (not success)
+           (let ((first (read-passwd prompt nil default))
+                 (second (read-passwd "Confirm password: " nil default)))
+             (if (equal first second)
+                 (progn
+                   (and (arrayp second) (clear-string second))
+                   (setq success first))
+               (and (arrayp first) (clear-string first))
+               (and (arrayp second) (clear-string second))
+               (message "Password not repeated accurately; please start over")
+               (sit-for 1))))
+         success)
+       (let ((pass nil)
+           (c 0)
+           (echo-keystrokes 0)
+           (cursor-in-echo-area t))
+       (while (progn (message "%s%s"
+                              prompt
+                              (make-string (length pass) ?.))
+                     (setq c (read-char-exclusive nil t))
+                     (and (/= c ?\r) (/= c ?\n) (/= c ?\e)))
+         (clear-this-command-keys)
+         (if (= c ?\C-u)
+             (progn
+               (and (arrayp pass) (clear-string pass))
+               (setq pass ""))
+           (if (and (/= c ?\b) (/= c ?\177))
+               (let* ((new-char (char-to-string c))
+                      (new-pass (concat pass new-char)))
+                 (and (arrayp pass) (clear-string pass))
+                 (clear-string new-char)
+                 (setq c ?\0)
+                 (setq pass new-pass))
+             (if (> (length pass) 0)
+                 (let ((new-pass (substring pass 0 -1)))
+                   (and (arrayp pass) (clear-string pass))
+                   (setq pass new-pass))))))
+       (message nil)
+       (or pass default "")))))
+ 
  (provide 'password)
  
  ;;; arch-tag: ab160494-16c8-4c68-a4a1-73eebf6686e5