;;;; *************************************************************************
;;;; FILE IDENTIFICATION
;;;;
-;;;; Name: strings.cl
+;;;; Name: strings.lisp
;;;; Purpose: UFFI source to handle strings, cstring and foreigns
;;;; Programmer: Kevin M. Rosenberg
;;;; Date Started: Feb 2002
;;;;
-;;;; $Id: strings.lisp,v 1.4 2002/10/16 11:56:43 kevin Exp $
+;;;; $Id$
;;;;
;;;; This file, part of UFFI, is Copyright (c) 2002 by Kevin M. Rosenberg
;;;;
;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
;;;; *************************************************************************
-(declaim (optimize (debug 3) (speed 3) (safety 1) (compilation-speed 0)))
-(in-package :uffi)
+(in-package #:uffi)
(defvar +null-cstring-pointer+
`(if (null ,obj)
+null-cstring-pointer+
(let ((ptr (new-ptr (1+ (length ,obj)))))
- (ccl:%put-cstring ptr ,obj)
+ (ccl::%put-cstring ptr ,obj)
ptr))
)
(defmacro free-cstring (obj)
#+(or cmu sbcl scl lispworks) (declare (ignore obj))
#+allegro
- `(unless (zerop obj)
+ `(unless (zerop ,obj)
(ff:free-fobject ,obj))
#+mcl
`(unless (ccl:%null-ptr-p ,obj)
(defmacro convert-to-foreign-string (obj)
#+lispworks
`(if (null ,obj)
- +null-cstring-pointer+
- (fli:convert-to-foreign-string ,obj))
+ +null-cstring-pointer+
+ (fli:convert-to-foreign-string ,obj :external-format '(:latin-1 :eol-style :lf)))
#+allegro
`(if (null ,obj)
0
`(if (null ,obj)
+null-cstring-pointer+
(let ((ptr (new-ptr (1+ (length ,obj)))))
- (ccl:%put-cstring ptr ,obj)
+ (ccl::%put-cstring ptr ,obj)
ptr))
)
;; Either length or null-terminated-p must be non-nil
(defmacro convert-from-foreign-string (obj &key
length
+ (locale :default)
(null-terminated-p t))
#+allegro
`(if (zerop ,obj)
nil
- (values (excl:native-to-string
- ,obj
- ,@(if length (list :length length) (values))
- :truncate (not ,null-terminated-p))))
+ (if (eq ,locale :none)
+ (fast-native-to-string ,obj ,length)
+ (values
+ (excl:native-to-string
+ ,obj
+ ,@(when length (list :length length))
+ :truncate (not ,null-terminated-p)))))
#+lispworks
`(if (fli:null-pointer-p ,obj)
nil
- (fli:convert-from-foreign-string
- ,obj
- ,@(if length (list :length length) (values))
- :null-terminated-p ,null-terminated-p
- :external-format '(:latin-1 :eol-style :lf)))
+ (if (eq ,locale :none)
+ (fast-native-to-string ,obj ,length)
+ (fli:convert-from-foreign-string
+ ,obj
+ ,@(when length (list :length length))
+ :null-terminated-p ,null-terminated-p
+ :external-format '(:latin-1 :eol-style :lf))))
#+(or cmu scl)
`(if (null-pointer-p ,obj)
nil
#+mcl
`(if (ccl:%null-ptr-p ,obj)
nil
- (ccl:%get-cstring ,obj 0 ,@(if length (list length) nil)))
+ #+(and mcl (not openmcl)) (ccl:%get-cstring ,obj 0 ,@(if length (list length) nil))
+ #+openmcl ,@(if length
+ `((ccl:%str-from-ptr ,obj ,length))
+ `((ccl:%get-cstring ,obj))))
)
-
(defmacro allocate-foreign-string (size &key (unsigned t))
- #+(or cmu scl)
+ #+ignore
(let ((array-def (gensym)))
`(let ((,array-def (list 'alien:array 'c-call:char ,size)))
(eval `(alien:cast (alien:make-alien ,,array-def)
,(if ,unsigned
'(* (alien:unsigned 8))
'(* (alien:signed 8)))))))
+
+ #+(or cmu scl)
+ `(alien:make-alien ,(if unsigned
+ '(alien:unsigned 8)
+ '(alien:signed 8))
+ ,size)
+
#+sbcl
- (let ((array-def (gensym)))
- `(let ((,array-def (list 'sb-alien:array 'char ,size)))
- (eval `(sb-alien:cast (sb-alien:make-alien ,,array-def)
- ,(if ,unsigned
- '(* (sb-alien:unsigned 8))
- '(* (sb-alien:signed 8)))))))
+ `(sb-alien:make-alien ,(if unsigned
+ '(sb-alien:unsigned 8)
+ '(sb-alien:signed 8))
+ ,size)
+
#+lispworks
`(fli:allocate-foreign-object :type
,(if unsigned
`(new-ptr ,size)
)
+(defun foreign-string-length (foreign-string)
+ #+allegro `(ff:foreign-strlen ,foreign-string)
+ #-allegro
+ `(loop with size = 0
+ until (char= (deref-array ,foreign-string '(:array :unsigned-char) size) #\Null)
+ do (incf size)
+ finally return size))
+
+
(defmacro with-foreign-string ((foreign-string lisp-string) &body body)
(let ((result (gensym)))
`(let* ((,foreign-string (convert-to-foreign-string ,lisp-string))
(setf (char result i) (code-char (system:sap-ref-8 sap i))))
result)))
-#+sbcl
+#+(and sbcl (not sb-unicode))
(defun sbcl-naturalize-cstring (sap &key length (null-terminated-p t))
- (declare (type sb-sys:system-area-pointer sap))
+ (declare (type sb-sys:system-area-pointer sap)
+ (type (or null fixnum) length))
(locally
- (declare (optimize (speed 3) (safety 0)))
- (let ((null-terminated-length
- (when null-terminated-p
- (loop
- for offset of-type fixnum upfrom 0
- until (zerop (sb-sys:sap-ref-8 sap offset))
- finally (return offset)))))
- (if length
- (if (and null-terminated-length
- (> (the fixnum length) (the fixnum null-terminated-length)))
- (setq length null-terminated-length))
- (setq length null-terminated-length)))
- (let ((result (make-string length)))
- (sb-kernel:copy-from-system-area sap 0
- result (* sb-vm:vector-data-offset
- sb-vm:n-word-bits)
- (* length sb-vm:n-byte-bits))
- result)))
+ (declare (optimize (speed 3) (safety 0)))
+ (let ((null-terminated-length
+ (when null-terminated-p
+ (loop
+ for offset of-type fixnum upfrom 0
+ until (zerop (sb-sys:sap-ref-8 sap offset))
+ finally (return offset)))))
+ (if length
+ (if (and null-terminated-length
+ (> (the fixnum length) (the fixnum null-terminated-length)))
+ (setq length null-terminated-length))
+ (setq length null-terminated-length)))
+ (let ((result (make-string length)))
+ (funcall *system-copy-fn* sap 0 result +system-copy-offset+
+ (* length +system-copy-multiplier+))
+ result)))
+
+#+(and sbcl sb-unicode)
+(defun sbcl-naturalize-cstring (sap &key length (null-terminated-p t))
+ (declare (type sb-sys:system-area-pointer sap)
+ (type (or null fixnum) length))
+ (locally
+ (declare (optimize (speed 3) (safety 0)))
+ (cond
+ (null-terminated-p
+ (let ((casted (sb-alien:cast (sb-alien:sap-alien sap (* char))
+ #+sb-unicode sb-alien:utf8-string
+ #-sb-unicode sb-alien:c-string)))
+ (if length
+ (copy-seq (subseq casted 0 length))
+ (copy-seq casted))))
+ (t
+ (let ((result (make-string length)))
+ ;; this will not work in sb-unicode
+ (funcall *system-copy-fn* sap 0 result +system-copy-offset+
+ (* length +system-copy-multiplier+))
+ result)))))
+
+
+(eval-when (:compile-toplevel :load-toplevel :execute)
+ (def-function "strlen"
+ ((str (* :unsigned-char)))
+ :returning :unsigned-int))
+
+(def-type char-ptr-def (* :unsigned-char))
+
+#+(or lispworks (and allegro (not ics)))
+(defun fast-native-to-string (s len)
+ (declare (optimize (speed 3) (space 0) (safety 0) (compilation-speed 0))
+ (type char-ptr-def s))
+ (let* ((len (or len (strlen s)))
+ (str (make-string len)))
+ (declare (fixnum len)
+ (type (simple-array (signed-byte 8) (*)) str))
+ (dotimes (i len str)
+ (setf (aref str i)
+ (uffi:deref-array s '(:array :char) i)))))
+
+#+(and allegro ics)
+(defun fast-native-to-string (s len)
+ (declare (optimize (speed 3) (space 0) (safety 0) (compilation-speed 0))
+ (type char-ptr-def s))
+ (let* ((len (or len (strlen s)))
+ (str (make-string len)))
+ (dotimes (i len str)
+ (setf (schar str i) (code-char (uffi:deref-array s '(:array :unsigned-byte) i))))))
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