Added symbian-fs.cpp, symbian filehandling class

svn-id: r18426

1 files changed, 196 insertions, 0 deletions

diff --git a/backends/fs/symbian/symbian-fs.cpp b/backends/fs/symbian/symbian-fs.cpp
new file mode 100644
index 0000000000..8a0f3b3a2a
--- /dev/null
+++ b/backends/fs/symbian/symbian-fs.cpp
@@ -0,0 +1,196 @@
+/* ScummVM - Scumm Interpreter
+ * Copyright (C) 2003-2005 Andreas 'Sprawl' Karlsson - Original EPOC port, ESDL
+ * Copyright (C) 2003-2005 Lars 'AnotherGuest' Persson - Original EPOC port, Audio System
+ * Copyright (C) 2005 Jurgen 'SumthinWicked' Braam - EPOC/CVS maintainer
+ * Copyright (C) 2005 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.
+ *
+ * $Header$
+ */
+
+#if defined (__SYMBIAN32__) 
+#include "stdafx.h"
+#include "../fs.h"
+
+//#include <sys/param.h>
+//#include <sys/stat.h>
+#include <dirent.h>
+//#include <stdio.h>
+//#include <unistd.h>
+#include <eikenv.h>
+#include <f32file.h>
+
+/*
+ * Implementation of the ScummVM file system API based on POSIX.
+ */
+
+class SymbianFilesystemNode : public AbstractFilesystemNode {
+protected:
+	String _displayName;
+	bool _isDirectory;
+	bool _isValid;
+	String _path;
+	bool _isPseudoRoot;
+
+public:
+	SymbianFilesystemNode(bool aIsRoot);
+	SymbianFilesystemNode(const String &path);
+	SymbianFilesystemNode(const SymbianFilesystemNode *node);
+	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 FSList listDir(ListMode mode = kListDirectoriesOnly) const;
+	virtual AbstractFilesystemNode *parent() const;
+};
+
+
+static 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 *FilesystemNode::getRoot() {
+	return new SymbianFilesystemNode(true);
+}
+
+AbstractFilesystemNode *FilesystemNode::getNodeForPath(const String &path) {
+	return new SymbianFilesystemNode(path);
+}
+
+SymbianFilesystemNode::SymbianFilesystemNode(bool aIsRoot) {
+	_path = "";
+	_isValid = true;
+	_isDirectory = true;
+	_isPseudoRoot = aIsRoot;
+	_displayName = "Root";
+
+}
+
+// SumthinWicked says: added next function myself, since it was not in 0.7.1.
+// might still be a little buggy, or simply the reason ScummVM can't run any 
+// games on the phone yet :P
+SymbianFilesystemNode::SymbianFilesystemNode(const String &path) {
+	if (path.size() == 0)
+		_isPseudoRoot = true;
+	_path = path;
+	const char *dsplName = NULL, *pos = path.c_str();
+	while (*pos)
+		if (*pos++ == '/')
+			dsplName = pos;
+	_displayName = String(dsplName);
+	_isValid = true;
+	_isDirectory = true;
+}
+
+SymbianFilesystemNode::SymbianFilesystemNode(const SymbianFilesystemNode *node) {
+	_displayName = node->_displayName;
+	_isValid = node->_isValid;
+	_isDirectory = node->_isDirectory;
+	_path = node->_path;
+	_isPseudoRoot = node->_isPseudoRoot;
+}
+
+FSList SymbianFilesystemNode::listDir(ListMode mode) const {
+	assert(_isDirectory);
+	FSList myList;
+
+	if (_isPseudoRoot) {
+		// Drives enumeration
+		TDriveList drivelist;
+		CEikonEnv::Static()->FsSession().DriveList(drivelist);
+		for (int loop=0;loop<KMaxDrives;loop++) {
+			if(drivelist[loop]>0) {
+				SymbianFilesystemNode entry(false);		
+				char drive_name[2];
+				drive_name[0] = loop+'A';
+				drive_name[1] = '\0';
+				entry._displayName = drive_name;
+				entry._isDirectory = true;
+				entry._isValid = true;
+				entry._isPseudoRoot = false;
+				char path[10];
+				sprintf(path,"%c:\\",loop+'A');
+				entry._path=path;
+				myList.push_back(wrap(new SymbianFilesystemNode(&entry)));
+			}
+		}
+	} else {
+		TPtrC8 ptr((const unsigned char*)_path.c_str(),_path.size());
+		TFileName fname;
+		fname.Copy(ptr);
+		TBuf8<256>nameBuf;
+		CDir* dirPtr;
+		if(CEikonEnv::Static()->FsSession().GetDir(fname,KEntryAttNormal|KEntryAttDir,0,dirPtr)==KErrNone) {
+			CleanupStack::PushL(dirPtr);
+			TInt cnt=dirPtr->Count();
+			for(TInt loop=0;loop<cnt;loop++) {
+				TEntry fileentry=(*dirPtr)[loop];
+				nameBuf.Copy(fileentry.iName);
+				SymbianFilesystemNode entry(false);
+				entry._isPseudoRoot = false;
+				
+				entry._displayName =(char*)nameBuf.PtrZ();
+				entry._path = _path;
+				entry._path +=(char*)nameBuf.PtrZ();
+				entry._isDirectory = fileentry.IsDir();
+				
+				// Honor the chosen mode
+				if ((mode == kListFilesOnly && entry._isDirectory) ||
+					(mode == kListDirectoriesOnly && !entry._isDirectory))
+					continue;
+				
+				if (entry._isDirectory)
+					entry._path += "\\";
+				myList.push_back(wrap(new SymbianFilesystemNode(&entry)));
+			}
+			CleanupStack::PopAndDestroy(dirPtr);
+		}
+
+	}
+	return myList;
+}
+
+AbstractFilesystemNode *SymbianFilesystemNode::parent() const {
+	SymbianFilesystemNode *p =NULL;
+
+	// 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 (!_isPseudoRoot && _path.size() > 3) {
+		p=new SymbianFilesystemNode(false);
+		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);
+	}
+	else
+	{
+		p=new SymbianFilesystemNode(true);
+	}
+	return p;
+}
+
+#endif // defined(__SYMBIAN32__)