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backends/platform/libretro/include/libretro-fs.h

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+/* 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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef LIBRETRO_FILESYSTEM_H
+#define LIBRETRO_FILESYSTEM_H
+
+#include "backends/fs/abstract-fs.h"
+
+#ifdef MACOSX
+#include <sys/types.h>
+#endif
+#include <unistd.h>
+
+/**
+ * Implementation of the ScummVM file system API based on LibRetro.
+ *
+ * Parts of this class are documented in the base interface class, AbstractFSNode.
+ */
+class LibRetroFilesystemNode : public AbstractFSNode {
+protected:
+	Common::String _displayName;
+	Common::String _path;
+	bool _isDirectory;
+	bool _isValid;
+	bool _isReadable;
+	bool _isWritable;
+
+	virtual AbstractFSNode *makeNode(const Common::String &path) const {
+		return new LibRetroFilesystemNode(path);
+	}
+
+	/**
+	 * Plain constructor, for internal use only (hence protected).
+	 */
+	LibRetroFilesystemNode() : _isDirectory(false), _isValid(false) {}
+
+public:
+	/**
+	 * Creates a LibRetroFilesystemNode for a given path.
+	 *
+	 * @param path the path the new node should point to.
+	 */
+	LibRetroFilesystemNode(const Common::String &path);
+
+	virtual bool exists() const {
+		return access(_path.c_str(), F_OK) == 0;
+	}
+	virtual Common::U32String getDisplayName() const {
+		return _displayName;
+	}
+	virtual Common::String getName() const {
+		return _displayName;
+	}
+	virtual Common::String getPath() const {
+		return _path;
+	}
+	virtual bool isDirectory() const {
+		return _isDirectory && _isReadable;
+	}
+	virtual bool isReadable() const {
+		return _isReadable;
+	}
+	virtual bool isWritable() const {
+		return _isWritable;
+	}
+
+	virtual AbstractFSNode *getChild(const Common::String &n) const;
+	virtual bool getChildren(AbstractFSList &list, ListMode mode, bool hidden) const;
+	virtual AbstractFSNode *getParent() const;
+
+	virtual Common::SeekableReadStream *createReadStream();
+	virtual Common::SeekableWriteStream *createWriteStream(bool atomic);
+	virtual bool createDirectory();
+
+	static Common::String getHomeDir(void);
+private:
+	/**
+	 * Tests and sets the _isValid and _isDirectory flags, using the stat() function.
+	 */
+	virtual void setFlags();
+};
+
+#endif