+;; Common Lisp bindings for GTK+ v2.0
+;; Copyright (C) 1999-2000 Espen S. Johnsen <espejohn@online.no>
+;;
+;; This library is free software; you can redistribute it and/or
+;; modify it under the terms of the GNU Lesser General Public
+;; License as published by the Free Software Foundation; either
+;; version 2 of the License, or (at your option) any later version.
+;;
+;; This library is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; Lesser General Public License for more details.
+;;
+;; You should have received a copy of the GNU Lesser General Public
+;; License along with this library; if not, write to the Free Software
+;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+;; $Id: utils.lisp,v 1.1 2004/10/27 14:50:15 espen Exp $
+
+
+(in-package "GLIB")
+
+(defun type-expand-1 (form)
+ (let ((def (cond ((symbolp form)
+ (kernel::info type expander form))
+ ((and (consp form) (symbolp (car form)))
+ (kernel::info type expander (car form)))
+ (t nil))))
+ (if def
+ (values (funcall def (if (consp form) form (list form))) t)
+ (values form nil))))
+
+
+(defun type-expand-to (type form)
+ (labels ((expand (form0)
+ (if (eq (first (mklist form0)) type)
+ form0
+ (multiple-value-bind (expanded-form expanded-p)
+ (type-expand-1 form0)
+ (if expanded-p
+ (expand expanded-form)
+ (error "~A can not be expanded to ~A" form type))))))
+ (expand form)))
+
+(defmacro with-gc-disabled (&body body)
+ (let ((gc-inhibit (make-symbol "GC-INHIBIT")))
+ `(progn
+ (let ((,gc-inhibit lisp::*gc-inhibit*))
+ (ext:gc-off)
+ (unwind-protect
+ ,@body
+ (unless ,gc-inhibit
+ (ext:gc-on)))))))
+
+(defun mklist (obj)
+ (if (atom obj) (list obj) obj))
+
+(defun namep (obj)
+ (and (symbolp obj) (not (member obj '(t nil)))))
+
+(defun all-equal (&rest objects)
+ (or
+ (null objects)
+ (null (rest objects))
+ (and
+ (equal (first objects) (second objects))
+ (apply #'all-equal (rest objects)))))
+
+(defun neq (obj1 obj2)
+ (not (eq obj1 obj2)))
+
+(defmacro return-if (form)
+ (let ((result (make-symbol "RESULT")))
+ `(let ((,result ,form))
+ (when ,result
+ (return ,result)))))
+
+(defun make-pointer (address)
+ (int-sap address))
+
+(defun null-pointer-p (pointer)
+ (zerop (sap-int pointer)))
+
+
+(defmacro when-bind ((var expr) &body body)
+ `(let ((,var ,expr))
+ (when ,var
+ ,@body)))
+
+
+(defmacro assoc-ref (key alist &key (test #'eq))
+ `(cdr (assoc ,key ,alist :test ,test)))
+
+
+(defmacro assoc-lref (key alist &key (test #'eq))
+ `(cadr (assoc ,key ,alist :test ,test)))
+
+
+(defun assoc-rem (key alist &key (test #'eq))
+ (remove-if #'(lambda (element) (funcall test key (car element))) alist))
+
+
+(defun assoc-delete (key alist &key (test #'eq))
+ (delete-if #'(lambda (element) (funcall test key (car element))) alist))
+
+
+(defun funcallable (object)
+ (if (consp object)
+ (fdefinition object)
+ object))
+
+(defun intersection-p (list1 list2 &key (test #'eq))
+ (dolist (obj list1 nil)
+ (when (member obj list2 :test test)
+ (return-from intersection-p t))))
+
+
+(defun split-string (string delimiter)
+ (declare (simple-string string) (character delimiter))
+ (check-type string string)
+ (check-type delimiter character)
+ (let ((pos (position delimiter string)))
+ (if (not pos)
+ (list string)
+ (cons
+ (subseq string 0 pos)
+ (split-string (subseq string (1+ pos)) delimiter)))))
+
+(defun split-string-if (string predicate)
+ (declare (simple-string string))
+ (check-type string string)
+ (check-type predicate (or symbol function))
+ (let ((pos (position-if predicate string :start 1)))
+ (if (not pos)
+ (list string)
+ (cons
+ (subseq string 0 pos)
+ (split-string-if (subseq string pos) predicate)))))
+
+(defun concatenate-strings (strings &optional delimiter)
+ (if (not (rest strings))
+ (first strings)
+ (concatenate
+ 'string
+ (first strings)
+ (if delimiter (string delimiter) "")
+ (concatenate-strings (rest strings) delimiter))))
+
+(defun string-prefix-p (prefix string)
+ (and
+ (>= (length string) (length prefix))
+ (string= prefix string :end2 (length prefix))))
+
+(defun get-all (plist property)
+ (multiple-value-bind (property value tail)
+ (get-properties plist (list property))
+ (when tail
+ (cons value (get-all (cddr tail) property)))))
+
+(defun plist-remove (plist property)
+ (when plist
+ (if (eq (first plist) property)
+ (plist-remove (cddr plist) property)
+ (list*
+ (first plist) (second plist) (plist-remove (cddr plist) property)))))
+
+
+;;;
+
+(defun utf-8-encode (code)
+ (labels ((encode-bytes (bit)
+ (unless (zerop bit)
+ (cons
+ (deposit-field
+ #x80 (byte 7 6) (ldb (byte bit (- bit 6)) code))
+ (encode-bytes (- bit 6)))))
+ (encode-string (length)
+ (map 'string #'code-char
+ (cons
+ (deposit-field
+ (mask-field (byte 7 (- 7 length)) #xFF)
+ (byte 7 (- 6 length))
+ (ldb (byte (+ (* length 6) 6) (* length 6)) code))
+ (encode-bytes (* length 6))))))
+ (cond
+ ((< code #x80) (string (code-char code)))
+ ((< code #x800) (encode-string 1))
+ ((< code #x10000) (encode-string 2))
+ ((< code #x200000) (encode-string 3))
+ ((< code #x4000000) (encode-string 4))
+ ((< code #x80000000) (encode-string 5))
+ (t (error "Invalid char code ~A" code)))))
+
+
+(defun latin1-to-unicode (string)
+ (reduce
+ #'(lambda (str1 str2)
+ (concatenate 'string str1 str2))
+ (map 'list #'(lambda (char) (utf-8-encode (char-code char))) string)))
~mdw / clg / commitdiff