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/* ScummVM - Scumm Interpreter
* Copyright (C) 2003-2006 The ScummVM Team
*
* 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.
*
* $URL$
* $Id$
*/
#if defined(PALMOS_MODE)
#include "common/stdafx.h"
#include "backends/fs/abstract-fs.h"
#include <stdio.h>
#include <stdlib.h>
/*
* Implementation of the ScummVM file system API based on PalmOS VFS API.
*/
class PalmOSFilesystemNode : public AbstractFilesystemNode {
protected:
String _displayName;
bool _isDirectory;
bool _isValid;
bool _isPseudoRoot;
String _path;
public:
PalmOSFilesystemNode();
PalmOSFilesystemNode(const String &p);
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;
private:
static void addFile (AbstractFSList &list, ListMode mode, const Char *base, FileInfoType* find_data);
};
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;
}
void PalmOSFilesystemNode::addFile(AbstractFSList &list, ListMode mode, const char *base, FileInfoType* find_data) {
PalmOSFilesystemNode entry;
bool isDir;
isDir = (find_data->attributes & vfsFileAttrDirectory);
if ((!isDir && mode == FilesystemNode::kListDirectoriesOnly) ||
(isDir && mode == FilesystemNode::kListFilesOnly))
return;
entry._isDirectory = isDir;
entry._displayName = find_data->nameP;
entry._path = base;
entry._path += find_data->nameP;
if (entry._isDirectory)
entry._path += "/";
entry._isValid = true;
entry._isPseudoRoot = false;
list.push_back(new PalmOSFilesystemNode(entry));
}
AbstractFilesystemNode *AbstractFilesystemNode::getCurrentDirectory() {
return AbstractFilesystemNode::getRoot();
}
AbstractFilesystemNode *AbstractFilesystemNode::getRoot() {
return new PalmOSFilesystemNode();
}
AbstractFilesystemNode *AbstractFilesystemNode::getNodeForPath(const String &path) {
return new PalmOSFilesystemNode(path);
}
PalmOSFilesystemNode::PalmOSFilesystemNode() {
_isDirectory = true;
_displayName = "Root";
_isValid = true;
_path = "/";
_isPseudoRoot = false;
}
PalmOSFilesystemNode::PalmOSFilesystemNode(const String &p) {
_path = p;
_displayName = lastPathComponent(p);
UInt32 attr;
FileRef handle;
Err e = VFSFileOpen(gVars->VFS.volRefNum, _path.c_str(), vfsModeRead, &handle);
if (!e) {
e = VFSFileGetAttributes(handle, &attr);
VFSFileClose(handle);
}
if (e) {
_isValid = false;
_isDirectory = false;
} else {
_isValid = true;
_isDirectory = (attr & vfsFileAttrDirectory);
}
_isPseudoRoot = false;
}
bool PalmOSFilesystemNode::listDir(AbstractFSList &myList, ListMode mode) const {
Err e;
Char nameP[256];
FileInfoType desc;
FileRef handle;
UInt32 dirIterator = expIteratorStart;
desc.nameP = nameP;
desc.nameBufLen = 256;
e = VFSFileOpen(gVars->VFS.volRefNum, _path.c_str(), vfsModeRead, &handle);
if (e)
return false;
while(dirIterator != expIteratorStop) {
e = VFSDirEntryEnumerate(handle, &dirIterator, &desc);
if (!e) {
addFile(myList, mode, _path.c_str(), &desc);
}
}
VFSFileClose(handle);
return true;
}
AbstractFilesystemNode *PalmOSFilesystemNode::parent() const {
PalmOSFilesystemNode *p = 0;
if (!_isPseudoRoot) {
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;
p->_displayName = lastPathComponent(p->_path);
p->_isPseudoRoot =(p->_path == "/");
}
return p;
}
AbstractFilesystemNode *PalmOSFilesystemNode::child(const String &name) const {
assert(_isDirectory);
String newPath(_path);
if (_path.lastChar() != '/')
newPath += '/';
newPath += name;
FileRef handle;
UInt32 attr;
Err e = VFSFileOpen(gVars->VFS.volRefNum, newPath.c_str(), vfsModeRead, &handle);
if (e)
return 0;
e = VFSFileGetAttributes(handle, &attr);
VFSFileClose(handle);
if (e || !(attr & vfsFileAttrDirectory))
return 0;
PalmOSFilesystemNode *p = new PalmOSFilesystemNode(newPath);
return p;
}
#endif // PALMOS_MODE
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