(error "Wrong vector type for read-vector on stream not of type simple-stream."))
(read-sequence vector stream :start (or start 0) :end end))))
-;;; Basic functionality for ansi-streams. These are separate
-;;; functions because they are called in places where we already know
-;;; we operate on an ansi-stream (as opposed to a simple- or
-;;; gray-stream, or the symbols t or nil), so we can evade typecase
-;;; and (in|out)-synonym-of calls.
-
-(declaim (inline %ansi-stream-read-byte %ansi-stream-read-char
- %ansi-stream-unread-char %ansi-stream-read-line
- %ansi-stream-read-sequence))
-
-(defun %ansi-stream-read-byte (stream eof-error-p eof-value blocking)
- (declare (ignore blocking))
- #+nil
- (sb-kernel:ansi-stream-read-byte stream eof-error-p eof-value)
- (sb-int:prepare-for-fast-read-byte stream
- (prog1
- (sb-int:fast-read-byte eof-error-p eof-value t)
- (sb-int:done-with-fast-read-byte))))
-
-(defun %ansi-stream-read-char (stream eof-error-p eof-value blocking)
- (declare (ignore blocking))
- #+nil
- (sb-kernel:ansi-stream-read-char stream eof-error-p eof-value)
- (sb-int:prepare-for-fast-read-char stream
- (prog1
- (sb-int:fast-read-char eof-error-p eof-value)
- (sb-int:done-with-fast-read-char))))
-
-(defun %ansi-stream-unread-char (character stream)
- (let ((index (1- (sb-kernel:ansi-stream-in-index stream)))
- (buffer (sb-kernel:ansi-stream-in-buffer stream)))
- (declare (fixnum index))
- (when (minusp index) (error "nothing to unread"))
- (cond (buffer
- (setf (aref buffer index) (char-code character))
- (setf (sb-kernel:ansi-stream-in-index stream) index))
- (t
- (funcall (sb-kernel:ansi-stream-misc stream) stream
- :unread character)))))
-
-(defun %ansi-stream-read-line (stream eof-error-p eof-value)
- (sb-int:prepare-for-fast-read-char stream
- (let ((res (make-string 80))
- (len 80)
- (index 0))
- (loop
- (let ((ch (sb-int:fast-read-char nil nil)))
- (cond (ch
- (when (char= ch #\newline)
- (sb-int:done-with-fast-read-char)
- (return (values (sb-kernel:shrink-vector res index) nil)))
- (when (= index len)
- (setq len (* len 2))
- (let ((new (make-string len)))
- (replace new res)
- (setq res new)))
- (setf (schar res index) ch)
- (incf index))
- ((zerop index)
- (sb-int:done-with-fast-read-char)
- (return (values (sb-impl::eof-or-lose stream eof-error-p
- eof-value)
- t)))
- ;; Since FAST-READ-CHAR already hit the eof char, we
- ;; shouldn't do another READ-CHAR.
- (t
- (sb-int:done-with-fast-read-char)
- (return (values (sb-kernel:shrink-vector res index) t)))))))))
-
-(defun %ansi-stream-read-sequence (seq stream start %end)
- (declare (type sequence seq)
- (type sb-kernel:ansi-stream stream)
- (type sb-int:index start)
- (type sb-kernel:sequence-end %end)
- (values sb-int:index))
- (let ((end (or %end (length seq))))
- (declare (type sb-int:index end))
- (etypecase seq
- (list
- (let ((read-function
- (if (subtypep (stream-element-type stream) 'character)
- #'%ansi-stream-read-char
- #'%ansi-stream-read-byte)))
- (do ((rem (nthcdr start seq) (rest rem))
- (i start (1+ i)))
- ((or (endp rem) (>= i end)) i)
- (declare (type list rem)
- (type sb-int:index i))
- (let ((el (funcall read-function stream nil :eof nil)))
- (when (eq el :eof)
- (return i))
- (setf (first rem) el)))))
- (vector
- (sb-kernel:with-array-data ((data seq) (offset-start start)
- (offset-end end))
- (typecase data
- ((or (simple-array (unsigned-byte 8) (*))
- (simple-array (signed-byte 8) (*))
- simple-string)
- (let* ((numbytes (- end start))
- (bytes-read (sb-sys:read-n-bytes stream
- data
- offset-start
- numbytes
- nil)))
- (if (< bytes-read numbytes)
- (+ start bytes-read)
- end)))
- (t
- (let ((read-function
- (if (subtypep (stream-element-type stream) 'character)
- #'%ansi-stream-read-char
- #'%ansi-stream-read-byte)))
- (do ((i offset-start (1+ i)))
- ((>= i offset-end) end)
- (declare (type sb-int:index i))
- (let ((el (funcall read-function stream nil :eof nil)))
- (when (eq el :eof)
- (return (+ start (- i offset-start))))
- (setf (aref data i) el)))))))))))
-
-
-(defun %ansi-stream-write-string (string stream start end)
- (declare (type string string)
- (type sb-kernel:ansi-stream stream)
- (type sb-int:index start end))
-
- ;; Note that even though you might expect, based on the behavior of
- ;; things like AREF, that the correct upper bound here is
- ;; (ARRAY-DIMENSION STRING 0), the ANSI glossary definitions for
- ;; "bounding index" and "length" indicate that in this case (i.e.
- ;; for the ANSI-specified functions WRITE-STRING and WRITE-LINE
- ;; which are implemented in terms of this function), (LENGTH STRING)
- ;; is the required upper bound. A foolish consistency is the
- ;; hobgoblin of lesser languages..
- (unless (<= 0 start end (length string))
- (error "~@<bad bounding indices START=~W END=~W for ~2I~_~S~:>"
- start
- end
- string))
-
- (if (sb-kernel:array-header-p string)
- (sb-kernel:with-array-data ((data string) (offset-start start)
- (offset-end end))
- (funcall (sb-kernel:ansi-stream-sout stream)
- stream data offset-start offset-end))
- (funcall (sb-kernel:ansi-stream-sout stream) stream string start end))
- string)
-
-(defun %ansi-stream-write-sequence (seq stream start %end)
- (declare (type sequence seq)
- (type sb-kernel:ansi-stream stream)
- (type sb-int:index start)
- (type sb-kernel:sequence-end %end)
- (values sequence))
- (let ((end (or %end (length seq))))
- (declare (type sb-int:index end))
- (etypecase seq
- (list
- (let ((write-function
- (if (subtypep (stream-element-type stream) 'character)
- ;; TODO: Replace these with ansi-stream specific
- ;; functions too.
- #'write-char
- #'write-byte)))
- (do ((rem (nthcdr start seq) (rest rem))
- (i start (1+ i)))
- ((or (endp rem) (>= i end)) seq)
- (declare (type list rem)
- (type sb-int:index i))
- (funcall write-function (first rem) stream))))
- (string
- (%ansi-stream-write-string seq stream start end))
- (vector
- (let ((write-function
- (if (subtypep (stream-element-type stream) 'character)
- ;; TODO: Replace these with ansi-stream specific
- ;; functions too.
- #'write-char
- #'write-byte)))
- (do ((i start (1+ i)))
- ((>= i end) seq)
- (declare (type sb-int:index i))
- (funcall write-function (aref seq i) stream)))))))
-
;;;
;;; USER-LEVEL FUNCTIONS
(simple-stream
(%read-byte stream eof-error-p eof-value))
(ansi-stream
- (%ansi-stream-read-byte stream eof-error-p eof-value t))
+ (sb-impl::ansi-stream-read-byte stream eof-error-p eof-value nil))
(fundamental-stream
(let ((char (sb-gray:stream-read-byte stream)))
(if (eq char :eof)
(simple-stream
(%read-char stream eof-error-p eof-value recursive-p t))
(ansi-stream
- (%ansi-stream-read-char stream eof-error-p eof-value t))
+ (sb-impl::ansi-stream-read-char stream eof-error-p eof-value
+ recursive-p))
(fundamental-stream
(let ((char (sb-gray:stream-read-char stream)))
(if (eq char :eof)
(with-stream-class (simple-stream)
(funcall-stm-handler j-read-char stream eof-error-p eof-value nil)))
(ansi-stream
- (if (funcall (sb-kernel:ansi-stream-misc stream) stream :listen)
- (%ansi-stream-read-char stream eof-error-p eof-value t)
- nil))
+ (sb-impl::ansi-stream-read-char-no-hang stream eof-error-p eof-value
+ recursive-p))
(fundamental-stream
(let ((char (sb-gray:stream-read-char-no-hang stream)))
(if (eq char :eof)
(simple-stream
(%unread-char stream character))
(ansi-stream
- (%ansi-stream-unread-char character stream))
+ (sb-impl::ansi-stream-unread-char character stream))
(fundamental-stream
(sb-gray:stream-unread-char stream character))))
nil)
;; FIXME: Broken on ECHO-STREAM (cf internal implementation?) --
;; CSR, 2004-01-19
(ansi-stream
- (let ((char (%ansi-stream-read-char stream eof-error-p eof-value t)))
- (cond ((eq char eof-value) char)
- ((characterp peek-type)
- (do ((char char (%ansi-stream-read-char stream eof-error-p
- eof-value t)))
- ((or (eq char eof-value) (char= char peek-type))
- (unless (eq char eof-value)
- (%ansi-stream-unread-char char stream))
- char)))
- ((eq peek-type t)
- (do ((char char (%ansi-stream-read-char stream eof-error-p
- eof-value t)))
- ((or (eq char eof-value)
- (not (sb-impl::whitespacep char)))
- (unless (eq char eof-value)
- (%ansi-stream-unread-char char stream))
- char)))
- (t
- (%ansi-stream-unread-char char stream)
- char))))
+ (sb-impl::ansi-stream-peek-char peek-type stream eof-error-p eof-value
+ recursive-p))
(fundamental-stream
(cond ((characterp peek-type)
(do ((char (sb-gray:stream-read-char stream)
char))))))))
(defun listen (&optional (stream *standard-input*) (width 1))
- "Returns T if Width octets are available on the given Stream. If Width
- is given as 'character, check for a character."
+ "Returns T if WIDTH octets are available on STREAM. If WIDTH is
+given as 'CHARACTER, check for a character. Note: the WIDTH argument
+is supported only on simple-streams."
;; WIDTH is number of octets which must be available; any value
;; other than 1 is treated as 'character.
(let ((stream (sb-impl::in-synonym-of stream)))
(simple-stream
(%listen stream width))
(ansi-stream
- (or (/= (the fixnum (sb-kernel:ansi-stream-in-index stream))
- sb-impl::+ansi-stream-in-buffer-length+)
- ;; Test for T explicitly since misc methods return :EOF sometimes.
- (eq (funcall (sb-kernel:ansi-stream-misc stream) stream :listen)
- t)))
+ (sb-impl::ansi-stream-listen stream))
(fundamental-stream
(sb-gray:stream-listen stream)))))
(simple-stream
(%read-line stream eof-error-p eof-value recursive-p))
(ansi-stream
- (%ansi-stream-read-line stream eof-error-p eof-value))
+ (sb-impl::ansi-stream-read-line stream eof-error-p eof-value
+ recursive-p))
(fundamental-stream
(multiple-value-bind (string eof) (sb-gray:stream-read-line stream)
(if (and eof (zerop (length string)))
(with-stream-class (simple-stream stream)
(%read-sequence stream seq start end partial-fill)))
(ansi-stream
- (%ansi-stream-read-sequence seq stream start end))
+ (sb-impl::ansi-stream-read-sequence seq stream start end))
(fundamental-stream
(sb-gray:stream-read-sequence stream seq start end)))))
(simple-stream
(%clear-input stream buffer-only))
(ansi-stream
- (setf (sb-kernel:ansi-stream-in-index stream)
- sb-impl::+ansi-stream-in-buffer-length+)
- (funcall (sb-kernel:ansi-stream-misc stream) stream :clear-input))
+ (sb-impl::ansi-stream-clear-input stream))
(fundamental-stream
(sb-gray:stream-clear-input stream))))
nil)
&key (start 0) (end nil))
"Outputs the String to the given Stream."
(let ((stream (sb-impl::out-synonym-of stream))
- (end (or end (length string))))
+ (end (sb-impl::%check-vector-sequence-bounds string start end)))
(etypecase stream
(simple-stream
(%write-string stream string start end)
string)
(ansi-stream
- (%ansi-stream-write-string string stream start end))
+ (sb-impl::ansi-stream-write-string string stream start end))
(fundamental-stream
(sb-gray:stream-write-string stream string start end)))))
(defun write-line (string &optional (stream *standard-output*)
&key (start 0) end)
(declare (type string string))
- ;; FIXME: Why is there this difference between the treatments of the
- ;; STREAM argument in WRITE-STRING and WRITE-LINE?
(let ((stream (sb-impl::out-synonym-of stream))
- (end (or end (length string))))
+ (end (sb-impl::%check-vector-sequence-bounds string start end)))
(etypecase stream
(simple-stream
(%check stream :output)
(funcall-stm-handler-2 j-write-chars string stream start end)
(funcall-stm-handler-2 j-write-char #\Newline stream)))
(ansi-stream
- (%ansi-stream-write-string string stream start end)
+ (sb-impl::ansi-stream-write-string string stream start end)
(funcall (sb-kernel:ansi-stream-out stream) stream #\Newline))
(fundamental-stream
(sb-gray:stream-write-string stream string start end)
(simple-stream
(%write-sequence stream seq start end))
(ansi-stream
- (%ansi-stream-write-sequence seq stream start end))
+ (sb-impl::ansi-stream-write-sequence seq stream start end))
(fundamental-stream
(sb-gray:stream-write-sequence stream seq start end)))))
(simple-stream
(%fresh-line stream))
(ansi-stream
- (when (/= (or (sb-kernel:charpos stream) 1) 0)
- (funcall (sb-kernel:ansi-stream-out stream) stream #\Newline)
- t))
+ (sb-impl::ansi-stream-fresh-line stream))
(fundamental-stream
(sb-gray:stream-fresh-line stream)))))
File-Stream is open to. If the second argument is supplied, then
this becomes the new file position. The second argument may also
be :start or :end for the start and end of the file, respectively."
- (declare (type (or (integer 0 *) (member nil :start :end)) position))
+ (declare (type (or index (alien sb!unix:off-t) (member nil :start :end))
+ position))
(etypecase stream
(simple-stream
(%file-position stream position))
(ansi-stream
- (cond
- (position
- (setf (sb-kernel:ansi-stream-in-index stream)
- sb-impl::+ansi-stream-in-buffer-length+)
- (funcall (sb-kernel:ansi-stream-misc stream)
- stream :file-position position))
- (t
- (let ((res (funcall (sb-kernel:ansi-stream-misc stream)
- stream :file-position nil)))
- (when res
- (- res
- (- sb-impl::+ansi-stream-in-buffer-length+
- (sb-kernel:ansi-stream-in-index stream))))))))))
+ (sb-impl::ansi-stream-file-position stream position))))
(defun file-length (stream)
"This function returns the length of the file that File-Stream is open to."
(simple-stream
(%file-length stream))
(ansi-stream
- (progn (sb-impl::stream-must-be-associated-with-file stream)
- (funcall (sb-kernel:ansi-stream-misc stream) stream :file-length)))))
+ (sb-impl::stream-must-be-associated-with-file stream)
+ (funcall (sb-kernel:ansi-stream-misc stream) stream :file-length))))
(defun charpos (&optional (stream *standard-output*))
"Returns the number of characters on the current line of output of the given
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