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fs.cpp

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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://scummvm.svn.sourceforge.net/svnroot/scummvm/scummvm/tags/release-0-11-1/common/fs.cpp $
 * $Id: fs.cpp 30944 2008-02-23 22:50:18Z sev $
 */

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

00029 FilesystemNode::FilesystemNode() {
      _realNode = 0;
      _refCount = 0;
}

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

00039 FilesystemNode::FilesystemNode(const FilesystemNode &node) {
      _realNode = node._realNode;
      _refCount = node._refCount;
      if (_refCount)
            ++(*_refCount);
}

00046 FilesystemNode::FilesystemNode(const Common::String &p) {
      AbstractFilesystemFactory *factory = AbstractFilesystemFactory::makeFSFactory();

      if (p.empty() || p == ".")
            _realNode = factory->makeCurrentDirectoryFileNode();
      else
            _realNode = factory->makeFileNodePath(p);
      _refCount = new int(1);
}

00056 FilesystemNode::~FilesystemNode() {
      decRefCount();
}

00060 FilesystemNode &FilesystemNode::operator= (const FilesystemNode &node) {
      if (node._refCount)
            ++(*node._refCount);

      decRefCount();

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

      return *this;
}

00072 bool FilesystemNode::operator<(const FilesystemNode& node) const
{
      if (isDirectory() && !node.isDirectory())
            return true;
      if (!isDirectory() && node.isDirectory())
            return false;

      return scumm_stricmp(getDisplayName().c_str(), node.getDisplayName().c_str()) < 0;
}

00082 void FilesystemNode::decRefCount() {
      if (_refCount) {
            assert(*_refCount > 0);
            --(*_refCount);
            if (*_refCount == 0) {
                  delete _refCount;
                  delete _realNode;
            }
      }
}

00093 bool FilesystemNode::exists() const {
      if (_realNode == 0)
            return false;

      return _realNode->exists();
}

00100 FilesystemNode FilesystemNode::getChild(const Common::String &n) const {
      if (_realNode == 0)
            return *this;

      assert(_realNode->isDirectory());
      AbstractFilesystemNode *node = _realNode->getChild(n);
      return FilesystemNode(node);
}

00109 bool FilesystemNode::getChildren(FSList &fslist, ListMode mode, bool hidden) const {
      if (!_realNode || !_realNode->isDirectory())
            return false;

      AbstractFSList tmp;

      if (!_realNode->getChildren(tmp, mode, hidden))
            return false;

      fslist.clear();
      for (AbstractFSList::iterator i = tmp.begin(); i != tmp.end(); ++i) {
            fslist.push_back(FilesystemNode(*i));
      }

      return true;
}

00126 Common::String FilesystemNode::getDisplayName() const {
      assert(_realNode);
      return _realNode->getDisplayName();
}

00131 Common::String FilesystemNode::getName() const {
      assert(_realNode);
      return _realNode->getName();
}

00136 FilesystemNode FilesystemNode::getParent() const {
      if (_realNode == 0)
            return *this;

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

00148 Common::String FilesystemNode::getPath() const {
      assert(_realNode);
      return _realNode->getPath();
}

00153 bool FilesystemNode::isDirectory() const {
      if (_realNode == 0)
            return false;

      return _realNode->isDirectory();
}

00160 bool FilesystemNode::isReadable() const {
      if (_realNode == 0)
            return false;

      return _realNode->isReadable();
}

00167 bool FilesystemNode::isWritable() const {
      if (_realNode == 0)
            return false;

      return _realNode->isWritable();
}

00174 bool FilesystemNode::lookupFile(FSList &results, FSList &fslist, Common::String &pattern, bool hidden, bool exhaustive) const
{
      int matches = 0;

      for (FSList::iterator entry = fslist.begin(); entry != fslist.end(); ++entry) {
            if (entry->isDirectory()) {
                  matches += lookupFileRec(results, *entry, pattern, hidden, exhaustive);
            }
      }

      return ((matches > 0) ? true : false);
}

00187 bool FilesystemNode::lookupFile(FSList &results, Common::String &pattern, bool hidden, bool exhaustive) const
{
      int matches;

      if (!isDirectory())
            return false;

      FilesystemNode dir = *this;
      matches = lookupFileRec(results, dir, pattern, hidden, exhaustive);

      return ((matches > 0) ? true : false);
}

00200 int FilesystemNode::lookupFileRec(FSList &results, FilesystemNode &dir, Common::String &pattern, bool hidden, bool exhaustive) const
{
      FSList entries;
      FSList children;
      int matches = 0;
      pattern.toUppercase();
      dir.getChildren(entries, FilesystemNode::kListAll, hidden);
      
      //Breadth search (entries in the same level)
      for (FSList::iterator entry = entries.begin(); entry != entries.end(); ++entry) {
            if (entry->isDirectory()) {
                  children.push_back(*entry);
            } else {
                  Common::String filename = entry->getName();
                  filename.toUppercase();
                  if (Common::matchString(filename.c_str(), pattern.c_str())) {
                        results.push_back(*entry);
                        matches++;

                        if (!exhaustive)
                              break;
                  }
            }
      }

      //Depth search (entries in lower levels)
      for (FSList::iterator child = children.begin(); child != children.end(); ++child) {
            matches += lookupFileRec(results, *child, pattern, hidden, exhaustive);
      }

      return matches;
}

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