Add Sacla to the repository.

1 files changed, 106 insertions, 0 deletions

diff --git a/Sacla/stream.lisp b/Sacla/stream.lisp
new file mode 100644
index 0000000..3d78263
--- /dev/null
+++ b/Sacla/stream.lisp
@@ -0,0 +1,106 @@
+;; Copyright (C) 2002-2004, Yuji Minejima <ggb01164@nifty.ne.jp>
+;; ALL RIGHTS RESERVED.
+;;
+;; $Id: stream.lisp,v 1.7 2004/05/26 07:57:52 yuji Exp $
+;; 
+;; Redistribution and use in source and binary forms, with or without
+;; modification, are permitted provided that the following conditions
+;; are met:
+;; 
+;;  * Redistributions of source code must retain the above copyright
+;;    notice, this list of conditions and the following disclaimer.
+;;  * Redistributions in binary form must reproduce the above copyright
+;;    notice, this list of conditions and the following disclaimer in
+;;    the documentation and/or other materials provided with the
+;;    distribution.
+;; 
+;; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+;; "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+;; LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+;; A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+;; OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+;; SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+;; LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+;; DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+;; THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+;; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+;; OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+(defun terpri (&optional output-stream)
+ (write-char #\Newline output-stream)
+ nil)
+
+(defun read-line (&optional input-stream eof-error-p eof-value recursive-p)
+  (let ((str (make-array 160
+                         :element-type 'character
+                         :fill-pointer 0
+                         :adjustable t))
+        char)
+    (loop
+     (setq char (read-char input-stream eof-error-p eof-value recursive-p))
+     (when (eql char eof-value)
+       (return (values str t)))
+     (vector-push-extend char str)
+     (when (char= char #\Newline)
+       (return (values str nil))))))
+
+
+(defun write-string (string &optional output-stream &key (start 0) end)
+  (unless end (setq end (length string)))
+  (do ((i start (1+ i)))
+      ((= i end) string)
+    (write-char (char string i) output-stream)))
+
+(defun write-line (string &optional output-stream &key (start 0) end)
+  (write-string string output-stream :start start :end end)
+  (write-char #\Newline output-stream)
+  string)
+
+(defun read-sequence (sequence stream &key (start 0) end)
+  (let ((pos start)
+        (read-element (if (subtypep (stream-element-type stream) 'character)
+                          #'read-char
+                        #'read-byte))
+        new)
+    (do-subsequence (element sequence start end nil pos)
+      (unless (setq new (funcall read-element stream))
+        (return pos))
+      (setf element new)
+      (incf pos))))
+
+
+(defun write-sequence (sequence stream &key (start 0) end)
+  (let ((write-element (if (subtypep (stream-element-type stream) 'character)
+                           #'write-char
+                         #'write-byte)))
+    (do-subsequence (element sequence start end)
+       (funcall write-element element stream))
+    sequence))
+
+
+(defmacro with-open-file ((stream filespec &rest options) &body body)
+  (let ((abortp (gensym)))
+    (multiple-value-bind (decls forms) (declarations-and-forms body)
+      `(let ((,var (open filespec ,@options))
+             (,abortp t))
+         ,@decls
+         (unwind-protect
+             (multiple-value-prog1
+              (progn ,@forms)
+              (setq ,abortp nil))
+           (when ,var
+             (close ,var :abort ,abortp)))))))
+
+(defmacro with-open-stream ((var stream) &body body)
+  (let ((abortp (gensym)))
+    (multiple-value-bind (decls forms) (declarations-and-forms body)
+      `(let ((,var ,stream)
+             (,abortp t))
+         ,@decls
+         (unwind-protect
+             (multiple-value-prog1
+              (progn ,@forms)
+              (setq ,abortp nil))
+           (when ,var
+             (close ,var :abort ,abortp)))))))
+