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fs.cpp

/* 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: https://svn.sourceforge.net/svnroot/scummvm/scummvm/tags/release-0-9-1/backends/fs/fs.cpp $
 * $Id: fs.cpp 22424 2006-05-12 21:41:54Z fingolfin $
 */

#include "common/stdafx.h"

#include "backends/fs/abstract-fs.h"
#include "backends/fs/fs.h"
#include "common/util.h"


FilesystemNode::FilesystemNode(AbstractFilesystemNode *realNode) {
      _realNode = realNode;
      _refCount = new int(1);
}

FilesystemNode::FilesystemNode() {
      _realNode = 0;
      _refCount = 0;
}

FilesystemNode::FilesystemNode(const FilesystemNode &node) {
      _realNode = node._realNode;
      _refCount = node._refCount;
      if (_refCount)
            ++(*_refCount);
}

FilesystemNode::FilesystemNode(const Common::String &p) {
      if (p.empty() || p == ".")
            _realNode = AbstractFilesystemNode::getCurrentDirectory();
      else
            _realNode = AbstractFilesystemNode::getNodeForPath(p);
      _refCount = new int(1);
}

FilesystemNode::~FilesystemNode() {
      decRefCount();
}

void FilesystemNode::decRefCount() {
      if (_refCount) {
            assert(*_refCount > 0);
            --(*_refCount);
            if (*_refCount == 0) {
                  delete _refCount;
                  delete _realNode;
            }
      }
}

FilesystemNode &FilesystemNode::operator  =(const FilesystemNode &node) {
      if (node._refCount)
            ++(*node._refCount);

      decRefCount();

      _realNode = node._realNode;
      _refCount = node._refCount;

      return *this;
}

FilesystemNode FilesystemNode::getParent() const {
      if (_realNode == 0)
            return *this;

      AbstractFilesystemNode *node = _realNode->parent();
      if (node == 0) {
            return *this;
      } else {
            return FilesystemNode(node);
      }
}

FilesystemNode FilesystemNode::getChild(const String &name) const {
      if (_realNode == 0)
            return *this;

      assert(_realNode->isDirectory());
      AbstractFilesystemNode *node = _realNode->child(name);
      return FilesystemNode(node);
}

bool FilesystemNode::listDir(FSList &fslist, ListMode mode) const {
      if (!_realNode || !_realNode->isDirectory())
            return false;

      AbstractFSList tmp;
      
      if (!_realNode->listDir(tmp, mode))
            return false;
      
      fslist.clear();
      for (AbstractFSList::iterator i = tmp.begin(); i != tmp.end(); ++i) {
            fslist.push_back(FilesystemNode(*i));
      }
      
      return true;
}

Common::String FilesystemNode::displayName() const {
      assert(_realNode);
      return _realNode->displayName();
}

bool FilesystemNode::isDirectory() const {
      if (_realNode == 0)
            return false;
      return _realNode->isDirectory();
}

Common::String FilesystemNode::path() const {
      assert(_realNode);
      return _realNode->path();
}


bool FilesystemNode::operator< (const FilesystemNode& node) const
{
      if (isDirectory() && !node.isDirectory())
            return true;
      if (!isDirectory() && node.isDirectory())
            return false;
      return scumm_stricmp(displayName().c_str(), node.displayName().c_str()) < 0;
}

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