RISCOS: Add RISC OS support

backends/platform/sdl/riscos/riscos.cpp

@@ -0,0 +1,106 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#define FORBIDDEN_SYMBOL_EXCEPTION_unistd_h
+
+#include "common/scummsys.h"
+
+#ifdef RISCOS
+
+#include "backends/platform/sdl/riscos/riscos.h"
+#include "backends/saves/default/default-saves.h"
+#include "backends/fs/posix/posix-fs-factory.h"
+#include "backends/fs/posix/posix-fs.h"
+
+#include <kernel.h>
+#include <swis.h>
+
+#ifndef URI_Dispatch
+#define URI_Dispatch 0x4e381
+#endif
+
+void OSystem_RISCOS::init() {
+	// Initialze File System Factory
+	_fsFactory = new POSIXFilesystemFactory();
+
+	// Invoke parent implementation of this method
+	OSystem_SDL::init();
+}
+
+void OSystem_RISCOS::initBackend() {
+	// Create the savefile manager
+	if (_savefileManager == 0) {
+		Common::String savePath = "/<Choices$Write>/ScummVM/Saves";
+		if (Posix::assureDirectoryExists(savePath))
+			_savefileManager = new DefaultSaveFileManager(savePath);
+	}
+
+	// Invoke parent implementation of this method
+	OSystem_SDL::initBackend();
+}
+
+bool OSystem_RISCOS::hasFeature(Feature f) {
+	if (f == kFeatureOpenUrl)
+		return true;
+
+	return OSystem_SDL::hasFeature(f);
+}
+
+bool OSystem_RISCOS::openUrl(const Common::String &url) {
+	int flags;
+	if (_swix(URI_Dispatch, _INR(0,2)|_OUT(0), 0, url.c_str(), 0, &flags) != NULL) {
+		warning("openUrl() (RISCOS) failed to open URL");
+		return false;
+	}
+	if ((flags & 1) == 1) {
+		warning("openUrl() (RISCOS) failed to open URL");
+		return false;
+	}
+	return true;
+}
+
+Common::String OSystem_RISCOS::getDefaultConfigFileName() {
+	return "/<Choices$Write>/ScummVM/scummvm.ini";
+}
+
+Common::WriteStream *OSystem_RISCOS::createLogFile() {
+	// Start out by resetting _logFilePath, so that in case
+	// of a failure, we know that no log file is open.
+	_logFilePath.clear();
+
+	Common::String logFile = "/<Choices$Write>/ScummVM/Logs";
+
+	if (!Posix::assureDirectoryExists(logFile)) {
+		return 0;
+	}
+
+	logFile += "/scummvm.log";
+
+	Common::FSNode file(logFile);
+	Common::WriteStream *stream = file.createWriteStream();
+	if (stream)
+		_logFilePath = logFile;
+	return stream;
+}
+
+#endif
+