This file is indexed.

/usr/share/common-lisp/source/kmrcl/byte-stream.lisp is in cl-kmrcl 1.106-1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
;;; -*- Syntax: Ansi-Common-Lisp; Base: 10; Mode: lisp -*-
;;;; *************************************************************************
;;;; FILE IDENTIFICATION
;;;;
;;;; Name:          byte-stream.lisp
;;;; Purpose:       Byte array input/output streams
;;;; Programmer:    Kevin M. Rosenberg
;;;; Date Started:  June 2003
;;;;
;;;; Works for CMUCL, SBCL, and AllergoCL only
;;;;
;;;; This file, part of KMRCL, is Copyright (c) 2003 by Kevin M. Rosenberg
;;;; and by onShore Development, Inc.
;;;;
;;;; KMRCL users are granted the rights to distribute and use this software
;;;; as governed by the terms of the Lisp Lesser GNU Public License
;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
;;;; *************************************************************************

(in-package #:kmrcl)

;; Intial CMUCL version by OnShored. Ported to AllegroCL, SBCL by Kevin Rosenberg

#+sbcl
(eval-when (:compile-toplevel :load-toplevel :execute)
  (when (sb-ext:without-package-locks
            (sb-pcl::structure-class-p
             (find-class (intern "FILE-STREAM" "SB-IMPL"))))
    (push :old-sb-file-stream cl:*features*)))

#+(or cmu sbcl)
(progn
(defstruct (byte-array-output-stream
             (:include #+cmu system:lisp-stream
                       #+(and sbcl old-sb-file-stream) sb-impl::file-stream
                       #+(and sbcl (not old-sb-file-stream)) sb-sys:fd-stream
                       (bout #'byte-array-bout)
                       (misc #'byte-array-out-misc))
             (:print-function %print-byte-array-output-stream)
             (:constructor make-byte-array-output-stream ()))
  ;; The buffer we throw stuff in.
  (buffer (make-array 128 :element-type '(unsigned-byte 8)))
  ;; Index of the next location to use.
  (index 0 :type fixnum))

(defun %print-byte-array-output-stream (s stream d)
  (declare (ignore s d))
  (write-string "#<Byte-Array-Output Stream>" stream))

(setf (documentation 'make-binary-output-stream 'function)
  "Returns an Output stream which will accumulate all output given it for
   the benefit of the function Get-Output-Stream-Data.")

(defun byte-array-bout (stream byte)
  (let ((current (byte-array-output-stream-index stream))
        (workspace (byte-array-output-stream-buffer stream)))
    (if (= current (length workspace))
        (let ((new-workspace (make-array (* current 2) :element-type '(unsigned-byte 8))))
          (replace new-workspace workspace)
          (setf (aref new-workspace current) byte)
          (setf (byte-array-output-stream-buffer stream) new-workspace))
        (setf (aref workspace current) byte))
    (setf (byte-array-output-stream-index stream) (1+ current))))

(defun byte-array-out-misc (stream operation &optional arg1 arg2)
  (declare (ignore arg2))
  (case operation
    (:file-position
     (if (null arg1)
         (byte-array-output-stream-index stream)))
    (:element-type '(unsigned-byte 8))))

(defun get-output-stream-data (stream)
  "Returns an array of all data sent to a stream made by
Make-Byte-Array-Output-Stream since the last call to this function and
clears buffer."
  (declare (type byte-array-output-stream stream))
    (prog1
        (dump-output-stream-data stream)
      (setf (byte-array-output-stream-index stream) 0)))

(defun dump-output-stream-data (stream)
  "Returns an array of all data sent to a stream made by
Make-Byte-Array-Output-Stream since the last call to this function."
  (declare (type byte-array-output-stream stream))
  (let* ((length (byte-array-output-stream-index stream))
         (result (make-array length :element-type '(unsigned-byte 8))))
    (replace result (byte-array-output-stream-buffer stream))
    result))

) ; progn


#+sbcl
(eval-when (:compile-toplevel :load-toplevel :execute)
  (sb-ext:without-package-locks
      (defvar *system-copy-fn* (if (fboundp (intern "COPY-SYSTEM-AREA" "SB-KERNEL"))
                                   (intern "COPY-SYSTEM-AREA" "SB-KERNEL")
                                   (intern "COPY-SYSTEM-UB8-AREA" "SB-KERNEL")))
    (defconstant +system-copy-multiplier+ (if (fboundp (intern "COPY-FROM-SYSTEM-AREA" "SB-KERNEL"))
                                              sb-vm:n-byte-bits
                                         1))))

#+(or cmu sbcl)
(progn
  (defstruct (byte-array-input-stream
             (:include #+cmu system:lisp-stream
                       ;;#+sbcl sb-impl::file-stream
                       #+(and sbcl old-sb-file-stream) sb-impl::file-stream
                       #+(and sbcl (not old-sb-file-stream)) sb-sys:fd-stream
                       (in #'byte-array-inch)
                       (bin #'byte-array-binch)
                       (n-bin #'byte-array-stream-read-n-bytes)
                       (misc #'byte-array-in-misc))
             (:print-function %print-byte-array-input-stream)
                                        ;(:constructor nil)
             (:constructor internal-make-byte-array-input-stream
                           (byte-array current end)))
  (byte-array nil :type vector)
  (current nil)
  (end nil))


(defun %print-byte-array-input-stream (s stream d)
  (declare (ignore s d))
  (write-string "#<Byte-Array-Input Stream>" stream))

(defun byte-array-inch (stream eof-errorp eof-value)
  (let ((byte-array (byte-array-input-stream-byte-array stream))
        (index (byte-array-input-stream-current stream)))
    (cond ((= index (byte-array-input-stream-end stream))
           #+cmu
           (eof-or-lose stream eof-errorp eof-value)
           #+sbcl
           (sb-impl::eof-or-lose stream eof-errorp eof-value)
           )
          (t
           (setf (byte-array-input-stream-current stream) (1+ index))
           (aref byte-array index)))))

(defun byte-array-binch (stream eof-errorp eof-value)
  (let ((byte-array (byte-array-input-stream-byte-array stream))
        (index (byte-array-input-stream-current stream)))
    (cond ((= index (byte-array-input-stream-end stream))
           #+cmu
           (eof-or-lose stream eof-errorp eof-value)
           #+sbcl
           (sb-impl::eof-or-lose stream eof-errorp eof-value)
           )
          (t
           (setf (byte-array-input-stream-current stream) (1+ index))
           (aref byte-array index)))))

(defun byte-array-stream-read-n-bytes (stream buffer start requested eof-errorp)
  (declare (type byte-array-input-stream stream))
  (let* ((byte-array (byte-array-input-stream-byte-array stream))
         (index (byte-array-input-stream-current stream))
         (available (- (byte-array-input-stream-end stream) index))
         (copy (min available requested)))
    (when (plusp copy)
      (setf (byte-array-input-stream-current stream)
        (+ index copy))
      #+cmu
      (system:without-gcing
       (system::system-area-copy (system:vector-sap byte-array)
                         (* index vm:byte-bits)
                         (if (typep buffer 'system::system-area-pointer)
                             buffer
                             (system:vector-sap buffer))
                         (* start vm:byte-bits)
                         (* copy vm:byte-bits)))
      #+sbcl
      (sb-sys:without-gcing
       (funcall *system-copy-fn* (sb-sys:vector-sap byte-array)
                         (* index +system-copy-multiplier+)
                         (if (typep buffer 'sb-sys::system-area-pointer)
                             buffer
                             (sb-sys:vector-sap buffer))
                         (* start +system-copy-multiplier+)
                         (* copy +system-copy-multiplier+))))
    (if (and (> requested copy) eof-errorp)
        (error 'end-of-file :stream stream)
        copy)))

(defun byte-array-in-misc (stream operation &optional arg1 arg2)
  (declare (ignore arg2))
  (case operation
    (:file-position
     (if arg1
         (setf (byte-array-input-stream-current stream) arg1)
         (byte-array-input-stream-current stream)))
    (:file-length (length (byte-array-input-stream-byte-array stream)))
    (:unread (decf (byte-array-input-stream-current stream)))
    (:listen (or (/= (the fixnum (byte-array-input-stream-current stream))
                     (the fixnum (byte-array-input-stream-end stream)))
                 :eof))
    (:element-type 'base-char)))

(defun make-byte-array-input-stream (buffer &optional (start 0) (end (length buffer)))
  "Returns an input stream which will supply the bytes of BUFFER between
  Start and End in order."
  (internal-make-byte-array-input-stream buffer start end))

) ;; progn

(eval-when (:compile-toplevel :load-toplevel :execute)
  (setq cl:*features* (delete :old-sb-file-stream cl:*features*)))

;;; Simple streams implementation by Kevin Rosenberg

#+allegro
(progn

  (defclass extendable-buffer-output-stream (excl:buffer-output-simple-stream)
    ()
    )

  (defun make-byte-array-output-stream ()
    "Returns an Output stream which will accumulate all output given it for
   the benefit of the function Get-Output-Stream-Data."
    (make-instance 'extendable-buffer-output-stream
      :buffer (make-array 128 :element-type '(unsigned-byte 8))
      :external-form :octets))

  (defun get-output-stream-data (stream)
    "Returns an array of all data sent to a stream made by
Make-Byte-Array-Output-Stream since the last call to this function
and clears buffer."
    (prog1
        (dump-output-stream-data stream)
      (file-position stream 0)))

  (defun dump-output-stream-data (stream)
    "Returns an array of all data sent to a stream made by
Make-Byte-Array-Output-Stream since the last call to this function."
    (force-output stream)
    (let* ((length (file-position stream))
           (result (make-array length :element-type '(unsigned-byte 8))))
      (replace result (slot-value stream 'excl::buffer))
      result))

  (excl::without-package-locks
   (defmethod excl:device-extend ((stream extendable-buffer-output-stream)
                                  need action)
     (declare (ignore action))
     (let* ((len (file-position stream))
            (new-len (max (+ len need) (* 2 len)))
            (old-buf (slot-value stream 'excl::buffer))
            (new-buf (make-array new-len :element-type '(unsigned-byte 8))))
       (declare (fixnum len)
                (optimize (speed 3) (safety 0)))
       (dotimes (i len)
         (setf (aref new-buf i) (aref old-buf i)))
       (setf (slot-value stream 'excl::buffer) new-buf)
       (setf (slot-value stream 'excl::buffer-ptr) new-len)
       )
     t))

)

#+allegro
(progn
  (defun make-byte-array-input-stream (buffer &optional (start 0)
                                                        (end (length buffer)))
    (excl:make-buffer-input-stream buffer start end :octets))
  ) ;; progn