;;; tq.el --- utility to maintain a transaction queue
-;; Copyright (C) 1985, 1986, 1987, 1992 Free Software Foundation, Inc.
+;; Copyright (C) 1985, 1986, 1987, 1992, 2003 Free Software Foundation, Inc.
;; Author: Scott Draves <spot@cs.cmu.edu>
+;; Maintainer: FSF
;; Adapted-By: ESR
;; Keywords: extensions
;; Boston, MA 02111-1307, USA.
;;; Commentary:
-
-;;; manages receiving a stream asynchronously,
-;;; parsing it into transactions, and then calling
-;;; handler functions
-;;; Our basic structure is the queue/process/buffer triple. Each entry
-;;; of the queue is a regexp/closure/function triple. We buffer
-;;; bytes from the process until we see the regexp at the head of the
-;;; queue. Then we call the function with the closure and the
-;;; collected bytes.
+;; manages receiving a stream asynchronously,
+;; parsing it into transactions, and then calling
+;; handler functions
+
+;; Our basic structure is the queue/process/buffer triple. Each entry
+;; of the queue is a regexp/closure/function triple. We buffer
+;; bytes from the process until we see the regexp at the head of the
+;; queue. Then we call the function with the closure and the
+;; collected bytes.
;;; Code:
(concat " tq-temp-"
(process-name process)))))))
(set-process-filter process
- (`(lambda (proc string)
- (tq-filter '(, tq) string))))
+ `(lambda (proc string)
+ (tq-filter ',tq string)))
tq))
;;; accessors
(defun tq-queue-head-closure (tq) (car (cdr (car (tq-queue tq)))))
(defun tq-queue-empty (tq) (not (tq-queue tq)))
(defun tq-queue-pop (tq) (setcar tq (cdr (car tq))) (null (car tq)))
-
+
;;; must add to queue before sending!
(defun tq-enqueue (tq question regexp closure fn)
(defun tq-filter (tq string)
"Append STRING to the TQ's buffer; then process the new data."
- (let ((old-buffer (current-buffer)))
- (unwind-protect
- (progn
- (set-buffer (tq-buffer tq))
- (goto-char (point-max))
- (insert string)
- (tq-process-buffer tq))
- (set-buffer old-buffer))))
+ (with-current-buffer (tq-buffer tq)
+ (goto-char (point-max))
+ (insert string)
+ (tq-process-buffer tq)))
(defun tq-process-buffer (tq)
"Check TQ's buffer for the regexp at the head of the queue."
(provide 'tq)
+;;; arch-tag: 65dea08c-4edd-4cde-83a5-e8a15b993b79
;;; tq.el ends here