ad4a2c4e |
1 | ;; Common Lisp bindings for GTK+ 2.x |
2 | ;; Copyright 2008 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: streams.lisp,v 1.1 2008-12-10 02:58:13 espen Exp $ |
24 | |
25 | |
26 | (in-package "GIO") |
27 | |
28 | (use-prefix "g") |
29 | |
30 | ;;; Input streams |
31 | |
32 | (defbinding input-stream-read (stream buffer &key length cancellable) gssize |
33 | (stream input-stream) |
34 | (buffer pointer) |
35 | (length gsize) |
36 | (cancellable (or null cancellable)) |
37 | (nil gerror-signal :out)) |
38 | |
39 | (defbinding input-stream-read-all (stream buffer &key length cancellable) boolean |
40 | (stream input-stream) |
41 | (buffer pointer) |
42 | (length gsize) |
43 | (bytes-read gsize :out) |
44 | (cancellable (or null cancellable)) |
45 | (nil gerror-signal :out)) |
46 | |
47 | (defbinding input-stream-skip (stream length &key cancellable) gssize |
48 | (stream input-stream) |
49 | (length gsize) |
50 | (cancellable (or null cancellable)) |
51 | (nil gerror-signal :out)) |
52 | |
53 | (defbinding input-stream-close (stream &key cancellable) boolean |
54 | (stream input-stream) |
55 | (cancellable (or null cancellable)) |
56 | (nil gerror-signal :out)) |
57 | |
58 | |
59 | ;;; Output streams |
60 | |
61 | (defbinding output-stream-write (stream buffer &key length cancellable) gssize |
62 | (stream output-stream) |
63 | (buffer (or (unboxed-vector (unsigned-byte 8)) pointer)) |
64 | ((or length (length buffer)) gsize) |
65 | (cancellable (or null cancellable)) |
66 | (nil gerror-signal :out)) |
67 | |
68 | (defbinding output-stream-write-all (stream buffer &key length cancellable) boolean |
69 | (stream output-stream) |
70 | (buffer (or (unboxed-vector (unsigned-byte 8)) pointer)) |
71 | ((or length (length buffer)) gsize) |
72 | (bytes-written gsize :out) |
73 | (cancellable (or null cancellable)) |
74 | (nil gerror-signal :out)) |
75 | |
76 | (defbinding output-stream-flush (stream &key cancellable) boolean |
77 | (stream output-stream) |
78 | (cancellable (or null cancellable)) |
79 | (nil gerror-signal :out)) |
80 | |
81 | (defbinding output-stream-close (stream &key cancellable) boolean |
82 | (stream output-stream) |
83 | (cancellable (or null cancellable)) |
84 | (nil gerror-signal :out)) |
85 | |
86 | |
87 | ;;; Unix streams |
88 | |
89 | (defbinding %unix-input-stream-new () pointer |
90 | (fd int) |
91 | (close-fd-p boolean)) |
92 | |
93 | (defmethod allocate-foreign ((stream unix-input-stream) &key fd close-fd) |
94 | (%unix-input-stream-new fd close-fd)) |
95 | |
96 | (defbinding %unix-output-stream-new () pointer |
97 | (fd int) |
98 | (close-fd-p boolean)) |
99 | |
100 | (defmethod allocate-foreign ((stream unix-output-stream) &key fd close-fd) |
101 | (%unix-output-stream-new fd close-fd)) |
102 | |
103 | |
104 | ;;; Callback streams (clg extension) |
105 | |
106 | (define-callback callback-stream-read-func gssize |
107 | ((buffer pointer) (count gsize) (cancellable (or null cancellable)) |
108 | (gerror pointer) (stream-id pointer-data)) |
109 | (declare (ignore cancellable)) |
110 | (handler-case |
111 | (let* ((sequence (make-array count :element-type '(unsigned-byte 8))) |
112 | (stream (find-user-data stream-id)) |
113 | (bytes-read (read-sequence sequence stream))) |
114 | (unless (null-pointer-p buffer) |
115 | (make-c-vector '(unsigned-byte 8) bytes-read |
116 | :content sequence :location buffer)) |
117 | bytes-read) |
118 | (serious-condition (condition) |
119 | (gerror-set-in-callback gerror (file-error-domain) |
120 | (enum-int :failed 'file-error-enum) (princ-to-string condition)) |
121 | -1))) |
122 | |
123 | (define-callback callback-stream-write-func gssize |
124 | ((buffer pointer) (count gsize) (cancellable (or null cancellable)) |
125 | (gerror pointer) (stream-id pointer-data)) |
126 | (declare (ignore cancellable)) |
127 | (handler-case |
128 | (let ((stream (find-user-data stream-id))) |
129 | (write-sequence |
130 | (map-c-vector 'vector 'identity buffer '(unsigned-byte 8) count) |
131 | stream)) |
132 | (serious-condition (condition) |
133 | (gerror-set-in-callback gerror (file-error-domain) |
134 | (enum-int :failed 'file-error-enum) (princ-to-string condition)) |
135 | -1))) |
136 | |
137 | (define-callback callback-stream-flush-func boolean |
138 | ((cancellable (or null cancellable)) (gerror pointer) |
139 | (stream-id pointer-data)) |
140 | (declare (ignore cancellable)) |
141 | (handler-case (force-output (find-user-data stream-id)) |
142 | (serious-condition (condition) |
143 | (gerror-set-in-callback gerror (file-error-domain) |
144 | (enum-int :failed 'file-error-enum) (princ-to-string condition)) |
145 | -1))) |
146 | |
147 | (define-callback callback-stream-close-func boolean |
148 | ((cancellable (or null cancellable)) gerror (stream-id pointer-data)) |
149 | (declare (ignore cancellable gerror)) |
150 | (destroy-user-data stream-id)) |
151 | |
152 | (defbinding %callback-input-stream-new (stream-id) pointer |
153 | (callback-stream-read-func callback) |
154 | (callback-stream-close-func callback) |
155 | (stream-id pointer-data)) |
156 | |
157 | (defbinding %callback-output-stream-new (stream-id) pointer |
158 | (callback-stream-read-func callback) |
159 | (callback-stream-flush-func callback) |
160 | (callback-stream-close-func callback) |
161 | (stream-id pointer-data)) |
162 | |
163 | (defmethod allocate-foreign ((stream callback-input-stream) &key base-stream) |
164 | (%callback-input-stream-new (register-user-data base-stream))) |
165 | |
166 | (defmethod allocate-foreign ((stream callback-output-stream) &key base-stream) |
167 | (%callback-input-stream-new (register-user-data base-stream))) |
168 | |
169 | |
170 | ;;; Lisp integration |
171 | |
172 | (deftype input-stream-designator () '(or stream input-stream integer)) |
173 | (deftype output-stream-designator () '(or stream input-stream integer)) |
174 | |
175 | (define-type-method alien-type ((type input-stream-designator)) |
176 | (declare (ignore type)) |
177 | (alien-type 'input-stream)) |
178 | |
179 | (define-type-method alien-arg-wrapper ((type input-stream-designator) var stream style form &optional copy-in-p) |
180 | (declare (ignore type)) |
181 | (let ((%stream (make-symbol "STREAM"))) |
182 | `(let ((,%stream (etypecase ,stream |
183 | (input-stream ,stream) |
184 | (integer (make-instance 'unix-input-stream :fd ,stream)) |
185 | (stream (make-instance 'callback-input-stream |
186 | :base-stream ,stream))))) |
187 | (unwind-protect |
188 | ,(alien-arg-wrapper 'input-stream var %stream style form copy-in-p) |
189 | (unless (typep ,stream 'input-stream) |
190 | (input-stream-close ,%stream)))))) |
191 | |
192 | (define-type-method alien-type ((type output-stream-designator)) |
193 | (declare (ignore type)) |
194 | (alien-type 'output-stream)) |
195 | |
196 | (define-type-method alien-arg-wrapper ((type output-stream-designator) var stream style form &optional copy-in-p) |
197 | (declare (ignore type)) |
198 | (let ((%stream (make-symbol "STREAM"))) |
199 | `(let ((,%stream (etypecase ,stream |
200 | (output-stream ,stream) |
201 | (integer (make-instance 'unix-output-stream :fd ,stream)) |
202 | (stream (make-instance 'callback-output-stream |
203 | :base-stream ,stream))))) |
204 | (unwind-protect |
205 | ,(alien-arg-wrapper 'input-stream var %stream style form copy-in-p) |
206 | (unless (typep ,stream 'output-stream) |
207 | (output-stream-close ,%stream)))))) |
208 | |
209 | ;; TODO: make GIO streams appear as Lisp streams |