X-Git-Url: http://git.kpe.io/?a=blobdiff_plain;f=base%2Futils.lisp;h=55f2bc91e540401d957a3e3679f18ebfc4b9bc60;hb=d0f147d0e7d942b379bd7cd472f26b00c33916bc;hp=c9590ec2fd96ec31e0c66a69d38a6e2ce2ae9230;hpb=8550d408609dd0eccf93c9ab0c20143311ce7c7c;p=clsql.git

diff --git a/base/utils.lisp b/base/utils.lisp
index c9590ec..55f2bc9 100644
--- a/base/utils.lisp
+++ b/base/utils.lisp
@@ -65,6 +65,39 @@
                    (char unescaped i)))))
     escaped))
 
+(defmacro without-interrupts (&body body)
+  #+lispworks `(mp:without-preemption ,@body)
+  #+allegro `(mp:without-scheduling ,@body)
+  #+cmu `(system:without-interrupts ,@body)
+  #+sbcl `(sb-sys::without-interrupts ,@body)
+  #+openmcl `(ccl:without-interrupts ,@body))
+
+(defun make-process-lock (name) 
+  #+allegro (mp:make-process-lock :name name)
+  #+cmu (mp:make-lock name)
+  #+lispworks (mp:make-lock :name name)
+  #+openmcl (ccl:make-lock :name name)
+  #+sb-thread (sb-thread:make-mutex :name name)
+  #+scl (thread:make-lock name)
+  #-(or allegro cmu lispworks openmcl sb-thread scl) (declare (ignore name))
+  #-(or allegro cmu lispworks openmcl sb-thread scl) nil)
+
+(defmacro with-process-lock ((lock desc) &body body)
+  #+(or cmu allegro lispworks openmcl sb-thread)
+  (declare (ignore desc))
+  #+(or allegro cmu lispworks openmcl sb-thread)
+  (let ((l (gensym)))
+    `(let ((,l ,lock))
+      #+allegro (mp:with-process-lock (,l) ,@body)
+      #+cmu (mp:with-lock-held (,l) ,@body)
+      #+openmcl (ccl:with-lock-grabbed (,l) ,@body)
+      #+lispworks (mp:with-lock (,l) ,@body)
+      #+sb-thread (sb-thread:with-recursive-lock (,l) ,@body)
+      ))
+  #+scl `(thread:with-lock-held (,lock ,desc) ,@body)
+  #-(or cmu allegro lispworks openmcl sb-thread scl) (declare 
+						      (ignore lock desc))
+  #-(or cmu allegro lispworks openmcl sb-thread scl) `(progn ,@body))
 
 (defun sql-escape-quotes (s)
   "Escape quotes for SQL string writing"
@@ -238,3 +271,53 @@ returns (VALUES string-output error-output exit-status)"
     `(let ((,insym ,obj))
        (or ,@(mapcar #'(lambda (c) `(eql ,insym ,c))
                      choices)))))
+
+;; From KMRCL
+(defun substitute-char-string (procstr match-char subst-str) 
+  "Substitutes a string for a single matching character of a string"
+  (substitute-chars-strings procstr (list (cons match-char subst-str))))
+
+(defun replaced-string-length (str repl-alist)
+  (declare (simple-string str)
+	   (optimize (speed 3) (safety 0) (space 0)))
+    (do* ((i 0 (1+ i))
+	  (orig-len (length str))
+	  (new-len orig-len))
+	 ((= i orig-len) new-len)
+      (declare (fixnum i orig-len new-len))
+      (let* ((c (char str i))
+	     (match (assoc c repl-alist :test #'char=)))
+	(declare (character c))
+	(when match
+	  (incf new-len (1- (length
+			     (the simple-string (cdr match)))))))))
+
+
+(defun substitute-chars-strings (str repl-alist)
+  "Replace all instances of a chars with a string. repl-alist is an assoc
+list of characters and replacement strings."
+  (declare (simple-string str)
+	   (optimize (speed 3) (safety 0) (space 0)))
+  (do* ((orig-len (length str))
+	(new-string (make-string (replaced-string-length str repl-alist)))
+	(spos 0 (1+ spos))
+	(dpos 0))
+      ((>= spos orig-len)
+       new-string)
+    (declare (fixnum spos dpos) (simple-string new-string))
+    (let* ((c (char str spos))
+	   (match (assoc c repl-alist :test #'char=)))
+      (declare (character c))
+      (if match
+	  (let* ((subst (cdr match))
+		 (len (length subst)))
+	    (declare (fixnum len)
+		     (simple-string subst))
+	    (dotimes (j len)
+	      (declare (fixnum j))
+	      (setf (char new-string dpos) (char subst j))
+	      (incf dpos)))
+	(progn
+	  (setf (char new-string dpos) c)
+	  (incf dpos))))))
+