Since we do ref counting on the nodes now, we can re-use the root nodes now

svn-id: r15851

backends/fs/fs.cpp

@@ -72,7 +72,10 @@ FilesystemNode &FilesystemNode::operator  =(const FilesystemNode &node) {
 }
 
 FilesystemNode FilesystemNode::getParent() const {
-	FilesystemNode wrapper;
-	wrapper._realNode = _realNode->parent();
-	return wrapper;
+	AbstractFilesystemNode *node = _realNode->parent();
+	if (node == 0)
+		return *this;
+	else {
+		return AbstractFilesystemNode::wrap(node);
+	}
 }

backends/fs/fs.h

@@ -139,6 +139,17 @@ public:
 	{
 		return scumm_stricmp(displayName().c_str(), node.displayName().c_str()) < 0;
 	}
+
+
+	/* TODO:
+	bool exists();
+
+	bool isDirectory();
+	bool isFile();
+
+	bool isReadable();
+	bool isWriteable();
+	*/
 };
 
 class FilesystemNode : public AbstractFilesystemNode {

backends/fs/morphos/abox-fs.cpp

@@ -38,7 +38,7 @@ class ABoxFilesystemNode : public AbstractFilesystemNode {
 		bool _isDirectory;
 		bool _isValid;
 		String _path;
-        
+
 	public:
 		ABoxFilesystemNode();
 		ABoxFilesystemNode(BPTR lock, CONST_STRPTR display_name = NULL);
@@ -140,7 +140,7 @@ ABoxFilesystemNode::~ABoxFilesystemNode()
 FSList ABoxFilesystemNode::listDir(ListMode mode) const
 {
 	FSList myList;
-        
+
 	if (!_isValid)
 		error("listDir() called on invalid node");
 
@@ -207,18 +207,15 @@ AbstractFilesystemNode *ABoxFilesystemNode::parent() const
 	if (!_isDirectory)
 		error("parent() called on file node");
 
-	if (_lock == NULL)
+	if (_lock == NULL) {
 		/* Parent of the root is the root itself */
-		node = clone();
-	else
-	{
+		node = 0;
+	} else {
 		BPTR parent_lock = ParentDir(_lock);
-		if (parent_lock)
-		{
+		if (parent_lock) {
 			node = new ABoxFilesystemNode(parent_lock);
 			UnLock(parent_lock);
-		}
-		else
+		} else
 			node = new ABoxFilesystemNode();
 	}
 

backends/fs/palmos/palmos-fs.cpp

@@ -136,13 +136,13 @@ const char *lastPathComponent(const Common::String &str) {
 }
 
 AbstractFilesystemNode *PalmOSFilesystemNode::parent() const {
-
-	PalmOSFilesystemNode *p = new PalmOSFilesystemNode();
-
+	PalmOSFilesystemNode *p = 0;
+	
 	if (!_isPseudoRoot) {
-        const char *start = _path.c_str();
-        const char *end = lastPathComponent(_path);
-
+		const char *start = _path.c_str();
+		const char *end = lastPathComponent(_path);
+	
+		p = new PalmOSFilesystemNode();
 		p->_path = String(start, end - start);
 		p->_isValid = true;
 		p->_isDirectory = true;

backends/fs/posix/posix-fs.cpp

@@ -185,22 +185,19 @@ FSList POSIXFilesystemNode::listDir(ListMode mode) const {
 }
 
 AbstractFilesystemNode *POSIXFilesystemNode::parent() const {
+	if (_path == "/")
+		return 0;
+
 	POSIXFilesystemNode *p = new POSIXFilesystemNode();
+	const char *start = _path.c_str();
+	const char *end = lastPathComponent(_path);
 
-	// Root node is its own parent. Still we can't just return this
-	// as the GUI code will call delete on the old node.
-	if (_path != "/") {
-		const char *start = _path.c_str();
-		const char *end = lastPathComponent(_path);
+	p->_path = String(start, end - start);
+	p->_displayName = lastPathComponent(p->_path);
 
-		p->_path = String(start, end - start);
-		p->_displayName = lastPathComponent(p->_path);
-	} else {
-		p->_path = _path;
-		p->_displayName = _displayName;
-	}
 	p->_isValid = true;
 	p->_isDirectory = true;
+
 	return p;
 }
 

backends/fs/windows/windows-fs.cpp

@@ -197,11 +197,12 @@ const char *lastPathComponent(const Common::String &str) {
 
 AbstractFilesystemNode *WindowsFilesystemNode::parent() const {
 	assert(_isValid || _isPseudoRoot);
-	WindowsFilesystemNode *p = new WindowsFilesystemNode();
+	WindowsFilesystemNode *p = 0;
 	if (!_isPseudoRoot && _path.size() > 3) {
 		const char *start = _path.c_str();
 		const char *end = lastPathComponent(_path);
 
+		p = new WindowsFilesystemNode();
 		p->_path = String(start, end - start);
 		p->_isValid = true;
 		p->_isDirectory = true;