source: trunk/abcl/src/org/armedbear/lisp/write-sequence.lisp @ 14207

Last change on this file since 14207 was 14070, checked in by ehuelsmann, 9 years ago

Expand types before checking them: fixes Drakma.

Patch by Stas Boukarev.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 3.0 KB
Line 
1;;; write-sequence.lisp
2;;;
3;;; Copyright (C) 2004-2005 Peter Graves
4;;; $Id: write-sequence.lisp 14070 2012-08-11 12:07:52Z ehuelsmann $
5;;;
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.
10;;;
11;;; This program is distributed in the hope that it will be useful,
12;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
13;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14;;; GNU General Public License for more details.
15;;;
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.
19;;;
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.
31
32(in-package #:system)
33
34(defun write-sequence (sequence stream &key (start 0) end)
35  (declare (type stream stream))
36  (declare (type index start))
37  (unless (>= start 0)
38    (error 'simple-type-error
39           :datum start
40           :expected-type '(integer 0)))
41  (if end
42      (unless (and (integerp end) (>= end 0))
43        (error 'simple-type-error
44               :datum end
45               :expected-type '(integer 0)))
46      (setf end (length sequence)))
47  (let ((end (the fixnum end))
48        (stream-element-type (expand-deftype (stream-element-type stream))))
49    (cond ((eq stream-element-type 'character)
50           (if (stringp sequence)
51               (%write-string sequence stream start end)
52               (do* ((i start (1+ i)))
53                    ((>= i end) sequence)
54                 (declare (type index i))
55                 (write-char (elt sequence i) stream))))
56          ((equal stream-element-type '(unsigned-byte 8))
57           (if (and (vectorp sequence)
58                    (equal (array-element-type sequence) '(unsigned-byte 8)))
59               (write-vector-unsigned-byte-8 sequence stream start end)
60               (do* ((i start (1+ i)))
61                    ((>= i end) sequence)
62                 (declare (type index i))
63                 (write-8-bits (elt sequence i) stream))))
64          (t
65           (do* ((i start (1+ i)))
66                ((>= i end) sequence)
67             (declare (type index i))
68             (write-byte (elt sequence i) stream)))))
69  sequence)
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