move psp_fs.cpp from backends/psp/ to backends/fs/psp/

svn-id: r22657

1 files changed, 187 insertions, 0 deletions

diff --git a/backends/fs/psp/psp_fs.cpp b/backends/fs/psp/psp_fs.cpp
new file mode 100644
index 0000000000..582740eae4
--- /dev/null
+++ b/backends/fs/psp/psp_fs.cpp
@@ -0,0 +1,187 @@
+/* ScummVM - Scumm Interpreter
+ * Copyright (C) 2005-2006 The ScummVM project
+ * Copyright (C) 2005 Joost Peters PSP Backend
+ * Copyright (C) 2005 Thomas Mayer PSP Backend
+ * Copyright (C) 2005 Paolo Costabel PSP Backend
+ *
+ * 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.
+ *
+ * $URL$
+ * $Id$
+ */
+
+#ifdef __PSP__
+#include "base/engine.h"
+
+#include "backends/fs/abstract-fs.h"
+#include "backends/fs/fs.h"
+
+#include <sys/stat.h>
+#include <unistd.h>
+
+
+/*
+ * Implementation of the ScummVM file system API based on PSPSDK API.
+ */
+
+class PSPFilesystemNode : public AbstractFilesystemNode {
+protected:
+	String _displayName;
+	bool _isDirectory;
+	bool _isValid;
+	bool _isPseudoRoot;
+	String _path;
+	
+public:
+	PSPFilesystemNode();
+	PSPFilesystemNode(const String &path);
+	PSPFilesystemNode(const Common::String &p, bool verify);
+
+	virtual String displayName() const { return _displayName; }
+	virtual bool isValid() const { return _isValid; }
+	virtual bool isDirectory() const { return _isDirectory; }
+	virtual String path() const { return _path; }
+
+	virtual bool listDir(AbstractFSList &list, ListMode mode) const;
+	virtual AbstractFilesystemNode *parent() const;
+	virtual AbstractFilesystemNode *child(const String &name) const;
+};
+
+AbstractFilesystemNode *AbstractFilesystemNode::getCurrentDirectory() {
+	return AbstractFilesystemNode::getRoot();
+}
+
+AbstractFilesystemNode *AbstractFilesystemNode::getRoot() {
+	return new PSPFilesystemNode();
+}
+
+PSPFilesystemNode::PSPFilesystemNode() {
+	_isDirectory = true;
+	_displayName = "Root";
+	_isValid = true;
+	_path = "ms0:/";
+	_isPseudoRoot = true;
+}
+
+PSPFilesystemNode::PSPFilesystemNode(const Common::String &p) {
+	_displayName = p;
+	_isValid = true;
+	_isDirectory = true;
+	_path = p;
+}
+
+PSPFilesystemNode::PSPFilesystemNode(const Common::String &p, bool verify) {
+	assert(p.size() > 0);
+        
+	_path = p;
+	_displayName = _path;
+	_isValid = true;
+	_isDirectory = true;
+
+	if (verify) {
+		struct stat st; 
+		_isValid = (0 == stat(_path.c_str(), &st));
+		_isDirectory = S_ISDIR(st.st_mode);
+	}       
+}
+
+AbstractFilesystemNode *AbstractFilesystemNode::getNodeForPath(const String &path) {
+	return new PSPFilesystemNode(path);
+}
+
+
+bool PSPFilesystemNode::listDir(AbstractFSList &myList, ListMode mode) const {
+	assert(_isDirectory);
+
+	int dfd  = sceIoDopen(_path.c_str());
+	if (dfd > 0) {
+		SceIoDirent dir;	   
+		memset(&dir, 0, sizeof(dir));
+	   
+		while (sceIoDread(dfd, &dir) > 0) {
+			// Skip 'invisible files
+			if (dir.d_name[0] == '.') 
+				continue;
+               
+			PSPFilesystemNode entry;
+            
+			entry._isValid = true;
+			entry._isPseudoRoot = false;
+			entry._displayName = dir.d_name;
+			entry._path = _path;
+			entry._path += dir.d_name;
+			entry._isDirectory = dir.d_stat.st_attr & FIO_SO_IFDIR;
+			
+			if (entry._isDirectory)
+				entry._path += "/";
+            
+			// Honor the chosen mode
+			if ((mode == FilesystemNode::kListFilesOnly && entry._isDirectory) ||
+			   (mode == FilesystemNode::kListDirectoriesOnly && !entry._isDirectory))
+				continue;
+            
+			myList.push_back(new PSPFilesystemNode(entry));
+		}
+
+		sceIoDclose(dfd);
+		return true;
+	} else {
+		return false;
+	}
+}
+
+const char *lastPathComponent(const Common::String &str) {
+	const char *start = str.c_str();
+	const char *cur = start + str.size() - 2;
+
+	while (cur > start && *cur != '/') {
+		--cur;
+	}
+
+	return cur + 1;
+}
+
+AbstractFilesystemNode *PSPFilesystemNode::parent() const {
+	assert(_isValid || _isPseudoRoot);
+	if (_isPseudoRoot)
+		return 0;
+	PSPFilesystemNode *p = new PSPFilesystemNode();
+	if (_path.size() > 5) {
+		const char *start = _path.c_str();
+		const char *end = lastPathComponent(_path);
+
+		p->_path = String(start, end - start);
+		p->_isValid = true;
+		p->_isDirectory = true;
+		p->_displayName = lastPathComponent(p->_path);
+		p->_isPseudoRoot = false;
+	}
+	return p;
+}
+
+AbstractFilesystemNode *PSPFilesystemNode::child(const String &name) const {
+	// FIXME: Pretty lame implementation! We do no error checking to speak
+	// of, do not check if this is a special node, etc.
+	assert(_isDirectory);
+	String newPath(_path);
+	if (_path.lastChar() != '/')
+		newPath += '/';
+	newPath += name;
+	PSPFilesystemNode *p = new PSPFilesystemNode(newPath, true);
+
+	return p;
+}
+
+#endif // PSP