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default-saves.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.
 *
 * $URL$
 * $Id$
 *
 */

#include "common/scummsys.h"

#if !defined(DISABLE_DEFAULT_SAVEFILEMANAGER)

#include "backends/saves/default/default-saves.h"

#include "common/savefile.h"
#include "common/util.h"
#include "common/fs.h"
#include "common/archive.h"
#include "common/config-manager.h"
#include "common/zlib.h"

#ifndef _WIN32_WCE
#include <errno.h>      // for removeSavefile()
#endif

DefaultSaveFileManager::DefaultSaveFileManager() {
}

DefaultSaveFileManager::DefaultSaveFileManager(const Common::String &defaultSavepath) {
      ConfMan.registerDefault("savepath", defaultSavepath);
}


00051 void DefaultSaveFileManager::checkPath(const Common::FSNode &dir) {
      clearError();
      if (!dir.exists()) {
            setError(Common::kPathDoesNotExist, "The savepath '"+dir.getPath()+"' does not exist");
      } else if (!dir.isDirectory()) {
            setError(Common::kPathNotDirectory, "The savepath '"+dir.getPath()+"' is not a directory");
      }
}

00060 Common::StringArray DefaultSaveFileManager::listSavefiles(const Common::String &pattern) {
      Common::String savePathName = getSavePath();
      checkPath(Common::FSNode(savePathName));
      if (getError().getCode() != Common::kNoError)
            return Common::StringArray();

      // recreate FSNode since checkPath may have changed/created the directory
      Common::FSNode savePath(savePathName);

      Common::FSDirectory dir(savePath);
      Common::ArchiveMemberList savefiles;
      Common::StringArray results;
      Common::String search(pattern);

      if (dir.listMatchingMembers(savefiles, search) > 0) {
            for (Common::ArchiveMemberList::const_iterator file = savefiles.begin(); file != savefiles.end(); ++file) {
                  results.push_back((*file)->getName());
            }
      }

      return results;
}

00083 Common::InSaveFile *DefaultSaveFileManager::openForLoading(const Common::String &filename) {
      // Ensure that the savepath is valid. If not, generate an appropriate error.
      Common::String savePathName = getSavePath();
      checkPath(Common::FSNode(savePathName));
      if (getError().getCode() != Common::kNoError)
            return 0;

      // recreate FSNode since checkPath may have changed/created the directory
      Common::FSNode savePath(savePathName);

      Common::FSNode file = savePath.getChild(filename);
      if (!file.exists())
            return 0;

      // Open the file for reading
      Common::SeekableReadStream *sf = file.createReadStream();

      return Common::wrapCompressedReadStream(sf);
}

00103 Common::OutSaveFile *DefaultSaveFileManager::openForSaving(const Common::String &filename) {
      // Ensure that the savepath is valid. If not, generate an appropriate error.
      Common::String savePathName = getSavePath();
      checkPath(Common::FSNode(savePathName));
      if (getError().getCode() != Common::kNoError)
            return 0;

      // recreate FSNode since checkPath may have changed/created the directory
      Common::FSNode savePath(savePathName);

      Common::FSNode file = savePath.getChild(filename);

      // Open the file for saving
      Common::WriteStream *sf = file.createWriteStream();

      return Common::wrapCompressedWriteStream(sf);
}

00121 bool DefaultSaveFileManager::removeSavefile(const Common::String &filename) {
      Common::String savePathName = getSavePath();
      checkPath(Common::FSNode(savePathName));
      if (getError().getCode() != Common::kNoError)
            return false;

      // recreate FSNode since checkPath may have changed/created the directory
      Common::FSNode savePath(savePathName);

      Common::FSNode file = savePath.getChild(filename);

      // FIXME: remove does not exist on all systems. If your port fails to
      // compile because of this, please let us know (scummvm-devel or Fingolfin).
      // There is a nicely portable workaround, too: Make this method overloadable.
      if (remove(file.getPath().c_str()) != 0) {
#ifndef _WIN32_WCE
            if (errno == EACCES)
                  setError(Common::kWritePermissionDenied, "Search or write permission denied: "+file.getName());

            if (errno == ENOENT)
                  setError(Common::kPathDoesNotExist, "removeSavefile: '"+file.getName()+"' does not exist or path is invalid");
#endif
            return false;
      } else {
            return true;
      }
}

00149 Common::String DefaultSaveFileManager::getSavePath() const {

      Common::String dir;

      // Try to use game specific savepath from config
      dir = ConfMan.get("savepath");

      // Work around a bug (#999122) in the original 0.6.1 release of
      // ScummVM, which would insert a bad savepath value into config files.
      if (dir == "None") {
            ConfMan.removeKey("savepath", ConfMan.getActiveDomainName());
            ConfMan.flushToDisk();
            dir = ConfMan.get("savepath");
      }

#ifdef _WIN32_WCE
      if (dir.empty())
            dir = ConfMan.get("path");
#endif

      return dir;
}

#endif // !defined(DISABLE_DEFAULT_SAVEFILEMANAGER)

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