| 1 | ;; Common Lisp bindings for GTK+ v2.0 |
| 2 | ;; Copyright 2005 Espen S. Johnsen <espen@users.sf.net> |
| 3 | ;; |
| 4 | ;; Permission is hereby granted, free of charge, to any person obtaining |
| 5 | ;; a copy of this software and associated documentation files (the |
| 6 | ;; "Software"), to deal in the Software without restriction, including |
| 7 | ;; without limitation the rights to use, copy, modify, merge, publish, |
| 8 | ;; distribute, sublicense, and/or sell copies of the Software, and to |
| 9 | ;; permit persons to whom the Software is furnished to do so, subject to |
| 10 | ;; the following conditions: |
| 11 | ;; |
| 12 | ;; The above copyright notice and this permission notice shall be |
| 13 | ;; included in all copies or substantial portions of the Software. |
| 14 | ;; |
| 15 | ;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 16 | ;; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 17 | ;; MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 18 | ;; IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| 19 | ;; CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| 20 | ;; TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| 21 | ;; SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 22 | |
| 23 | ;; $Id: gerror.lisp,v 1.5 2006/02/26 15:30:01 espen Exp $ |
| 24 | |
| 25 | |
| 26 | (in-package "GLIB") |
| 27 | |
| 28 | (defclass gerror (struct) |
| 29 | ((domain :allocation :alien :type quark :reader gerror-domain) |
| 30 | (code :allocation :alien :type int :reader gerror-code) |
| 31 | (message :allocation :alien :type string :reader gerror-message)) |
| 32 | (:metaclass struct-class)) |
| 33 | |
| 34 | (defbinding (%gerror-copy "g_error_copy") () pointer |
| 35 | (location pointer)) |
| 36 | |
| 37 | (defbinding (%gerror-free "g_error_free") () nil |
| 38 | (location pointer)) |
| 39 | |
| 40 | (defmethod reference-foreign ((class (eql (find-class 'gerror))) location) |
| 41 | (declare (ignore class)) |
| 42 | (%gerror-copy location)) |
| 43 | |
| 44 | (defmethod unreference-foreign ((class (eql (find-class 'gerror))) location) |
| 45 | (declare (ignore class)) |
| 46 | (%gerror-free location)) |
| 47 | |
| 48 | |
| 49 | (define-condition glib-error (error) |
| 50 | ((code :initarg :domain :reader gerror-code) |
| 51 | (message :initarg :message :reader gerror-message)) |
| 52 | (:report (lambda (condition stream) |
| 53 | (write-string (gerror-message condition) stream)))) |
| 54 | |
| 55 | (define-condition glib-file-error (glib-error) |
| 56 | ()) |
| 57 | |
| 58 | (defbinding file-error-quark () quark) |
| 59 | |
| 60 | (defun signal-gerror (gerror) |
| 61 | (let ((condition |
| 62 | (cond |
| 63 | ((= (gerror-domain gerror) (file-error-quark)) 'glib-file-error) |
| 64 | (t 'glib-error)))) |
| 65 | (error condition :code (gerror-code gerror) :message (gerror-message gerror)))) |
| 66 | |
| 67 | |
| 68 | (deftype gerror-signal () 'gerror) |
| 69 | |
| 70 | (define-type-method from-alien-form ((type gerror-signal) gerror) |
| 71 | (declare (ignore type)) |
| 72 | `(let ((gerror ,(from-alien-form 'gerror gerror))) |
| 73 | (when gerror |
| 74 | (signal-gerror gerror)))) |
| 75 | |
| 76 | |
| 77 | ;;; Message logging |
| 78 | |
| 79 | (eval-when (:compile-toplevel :load-toplevel :execute) |
| 80 | (deftype log-levels () |
| 81 | '(flags |
| 82 | :recursion :fatal ;; These are not real log-levels, but flags |
| 83 | ;; which may be set |
| 84 | error-log-level |
| 85 | critical-log-level |
| 86 | warning-log-level |
| 87 | message-log-level |
| 88 | info-log-level |
| 89 | debug-log-level))) |
| 90 | |
| 91 | (define-condition log-level (warning) |
| 92 | ((domain :initarg :domain :reader log-domain) |
| 93 | (message :initarg :message :reader log-message)) |
| 94 | (:report (lambda (condition stream) |
| 95 | (format stream "~A: ~A" |
| 96 | (log-domain condition) (log-message condition))))) |
| 97 | |
| 98 | (define-condition unknown-log-level (log-level) |
| 99 | ()) |
| 100 | |
| 101 | (define-condition error-log-level (log-level) |
| 102 | ()) |
| 103 | |
| 104 | (define-condition critical-log-level (log-level) |
| 105 | ()) |
| 106 | |
| 107 | (define-condition warning-log-level (log-level) |
| 108 | ()) |
| 109 | |
| 110 | (define-condition info-log-level (log-level) |
| 111 | ()) |
| 112 | |
| 113 | (define-condition debug-log-level (log-level) |
| 114 | ()) |
| 115 | |
| 116 | (defparameter *fatal-log-levels* '(error-log-level critical-log-level)) |
| 117 | |
| 118 | (define-callback log-handler nil |
| 119 | ((domain string) (log-level log-levels) (message string)) |
| 120 | (let ((fatal-p (or |
| 121 | (find :fatal log-level) |
| 122 | (some |
| 123 | #'(lambda (level) (find level *fatal-log-levels*)) |
| 124 | log-level))) |
| 125 | (condition (or |
| 126 | (find-if |
| 127 | #'(lambda (level) (subtypep level 'condition)) |
| 128 | log-level) |
| 129 | 'unknown-log-level))) |
| 130 | (funcall (if fatal-p #'error #'warn) condition |
| 131 | :domain domain :message message))) |
| 132 | |
| 133 | (setf (extern-alien "log_handler" system-area-pointer) |
| 134 | (callback-address log-handler)) |
| 135 | |
| 136 | |
| 137 | #+glib2.6 |
| 138 | (progn |
| 139 | ;; Unfortunately this will only work as long as we don't abort to |
| 140 | ;; toplevel from within the log handler. If we do that, the next |
| 141 | ;; invocation of g_log will be handled as a recursion and cause an |
| 142 | ;; abort (SIGABORT being signaled). To make things even worse, SBCL |
| 143 | ;; doesn't handle SIGABRT at all. |
| 144 | (defbinding %log-set-default-handler () pointer |
| 145 | ((progn log-handler) callback) |
| 146 | (nil null)) |
| 147 | (%log-set-default-handler)) |