source: trunk/abcl/src/org/armedbear/lisp/read-sequence.lisp @ 11457

Last change on this file since 11457 was 11391, checked in by vvoutilainen, 13 years ago

ABCL license is GPL + Classpath exception. This was intended
by Peter Graves, the original author. For reference, see

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 2.9 KB
1;;; read-sequence.lisp
3;;; Copyright (C) 2004-2005 Peter Graves
4;;; $Id: read-sequence.lisp 11391 2008-11-15 22:38:34Z vvoutilainen $
6;;; This program is free software; you can redistribute it and/or
7;;; modify it under the terms of the GNU General Public License
8;;; as published by the Free Software Foundation; either version 2
9;;; of the License, or (at your option) any later version.
11;;; This program is distributed in the hope that it will be useful,
12;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
14;;; GNU General Public License for more details.
16;;; You should have received a copy of the GNU General Public License
17;;; along with this program; if not, write to the Free Software
18;;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
20;;; As a special exception, the copyright holders of this library give you
21;;; permission to link this library with independent modules to produce an
22;;; executable, regardless of the license terms of these independent
23;;; modules, and to copy and distribute the resulting executable under
24;;; terms of your choice, provided that you also meet, for each linked
25;;; independent module, the terms and conditions of the license of that
26;;; module.  An independent module is a module which is not derived from
27;;; or based on this library.  If you modify this library, you may extend
28;;; this exception to your version of the library, but you are not
29;;; obligated to do so.  If you do not wish to do so, delete this
30;;; exception statement from your version.
32(in-package #:system)
34(defun read-sequence (sequence stream &key (start 0) end)
35  (declare (type stream stream))
36  (require-type start '(integer 0))
37  (if end
38      (require-type end '(integer 0))
39      (setf end (length sequence)))
40  (let* ((element-type (stream-element-type stream)))
41    (cond ((eq element-type 'character)
42           (do ((pos start (1+ pos)))
43               ((>= pos end) pos)
44             (let ((element (read-char stream nil :eof)))
45               (when (eq element :eof)
46                 (return pos))
47               (setf (elt sequence pos) element))))
48          ((equal element-type '(unsigned-byte 8))
49           (if (and (vectorp sequence)
50                    (equal (array-element-type sequence) '(unsigned-byte 8)))
51               (read-vector-unsigned-byte-8 sequence stream start end)
52               (do ((pos start (1+ pos)))
53                   ((>= pos end) pos)
54                 (let ((element (read-8-bits stream nil :eof)))
55                   (when (eq element :eof)
56                     (return pos))
57                   (setf (elt sequence pos) element)))))
58          (t
59           (do ((pos start (1+ pos)))
60               ((>= pos end) pos)
61             (let ((element (read-byte stream nil :eof)))
62               (when (eq element :eof)
63                 (return pos))
64               (setf (elt sequence pos) element)))))))
Note: See TracBrowser for help on using the repository browser.