Changed the FilesystemNode implementation to make it easier to use (client code doesn't have to worry about the memory managment anymore, it's all 'automatic' now). May have introduced a mem leak or two, please check :-)

svn-id: r15848

1 files changed, 78 insertions, 0 deletions

diff --git a/backends/fs/fs.cpp b/backends/fs/fs.cpp
new file mode 100644
index 0000000000..1c9b7efe5d
--- /dev/null
+++ b/backends/fs/fs.cpp
@@ -0,0 +1,78 @@
+/* ScummVM - Scumm Interpreter
+ * Copyright (C) 2002-2004 The ScummVM project
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * $Header$
+ */
+
+#include "stdafx.h"
+
+#include "fs.h"
+
+FilesystemNode AbstractFilesystemNode::wrap(AbstractFilesystemNode *node) {
+	FilesystemNode wrapper;
+	wrapper._realNode = node;
+	return wrapper;
+}
+
+
+FilesystemNode::FilesystemNode() {
+	_realNode = getRoot();
+	_refCount = new int(1);
+}
+
+FilesystemNode::FilesystemNode(const FilesystemNode &node)
+	: AbstractFilesystemNode() {
+	_realNode = node._realNode;
+	_refCount = node._refCount;
+	++(*_refCount);
+}
+
+#ifdef MACOSX
+FilesystemNode::FilesystemNode(const String &p) {
+	_realNode = getNodeForPath(p);
+	_refCount = new int(1);
+}
+#endif
+
+FilesystemNode::~FilesystemNode() {
+	decRefCount();
+}
+
+void FilesystemNode::decRefCount() {
+	--(*_refCount);
+	if (*_refCount <= 0) {
+		delete _refCount;
+		delete _realNode;
+	}
+}
+
+FilesystemNode &FilesystemNode::operator  =(const FilesystemNode &node) {
+	++(*node._refCount);
+
+	decRefCount();
+
+	_realNode = node._realNode;
+	_refCount = node._refCount;
+
+	return *this;
+}
+
+FilesystemNode FilesystemNode::getParent() const {
+	FilesystemNode wrapper;
+	wrapper._realNode = _realNode->parent();
+	return wrapper;
+}