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/* ScummVM - Scumm Interpreter
* Copyright (C) 2002-2006 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*/
#if defined(__DC__)
#include "common/stdafx.h"
#include "backends/fs/abstract-fs.h"
#include <ronin/cdfs.h>
#include <stdio.h>
#include <unistd.h>
/*
* Implementation of the ScummVM file system API based on ronin.
*/
class RoninCDFilesystemNode : public AbstractFilesystemNode {
protected:
String _displayName;
bool _isDirectory;
bool _isValid;
String _path;
public:
RoninCDFilesystemNode();
RoninCDFilesystemNode(const String &path, bool verify);
virtual String displayName() const { return _displayName; }
virtual String name() 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 &n) 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 *AbstractFilesystemNode::getCurrentDirectory() {
// Since there is no way to _set_ the current directory,
// it will always be /...
return getRoot();
}
AbstractFilesystemNode *AbstractFilesystemNode::getRoot() {
return new RoninCDFilesystemNode();
}
AbstractFilesystemNode *AbstractFilesystemNode::getNodeForPath(const String &path) {
return new RoninCDFilesystemNode(path, true);
}
RoninCDFilesystemNode::RoninCDFilesystemNode() {
// The root dir.
_path = "/";
_displayName = _path;
_isValid = true;
_isDirectory = true;
}
RoninCDFilesystemNode::RoninCDFilesystemNode(const String &p, bool verify) {
assert(p.size() > 0);
_path = p;
_displayName = lastPathComponent(_path);
_isValid = true;
_isDirectory = true;
if (verify) {
int fd;
if((fd = open(_path.c_str(), O_RDONLY)) >= 0) {
close(fd);
_isDirectory = false;
}
else if((fd = open(_path.c_str(), O_DIR|O_RDONLY)) >= 0) {
close(fd);
}
else {
_isValid = false;
}
}
}
bool RoninCDFilesystemNode::listDir(AbstractFSList &myList, ListMode mode) const {
assert(_isDirectory);
DIR *dirp = opendir(_path.c_str());
struct dirent *dp;
if (dirp == NULL)
return false;
// ... loop over dir entries using readdir
while ((dp = readdir(dirp)) != NULL) {
String newPath(_path);
if (newPath.lastChar() != '/')
newPath += '/';
newPath += dp->d_name;
RoninCDFilesystemNode entry(newPath, false);
entry._isDirectory = dp->d_size < 0;
// Skip files that are invalid for some reason (e.g. because we couldn't
// properly stat them).
if (!entry._isValid)
continue;
// Honor the chosen mode
if ((mode == FilesystemNode::kListFilesOnly && entry._isDirectory) ||
(mode == FilesystemNode::kListDirectoriesOnly && !entry._isDirectory))
continue;
if (entry._isDirectory)
entry._path += "/";
myList.push_back(new RoninCDFilesystemNode(entry));
}
closedir(dirp);
return true;
}
AbstractFilesystemNode *RoninCDFilesystemNode::parent() const {
if (_path == "/")
return 0;
const char *start = _path.c_str();
const char *end = lastPathComponent(_path);
RoninCDFilesystemNode *p = new RoninCDFilesystemNode(String(start, end - start), false);
return p;
}
AbstractFilesystemNode *RoninCDFilesystemNode::child(const String &n) 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 += n;
RoninCDFilesystemNode *p = new RoninCDFilesystemNode(newPath, true);
return p;
}
#endif // defined(__DC__)
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