fbreader/src/migration/Migration.cpp

   1 /*
   2  * Copyright (C) 2008 Geometer Plus <contact@geometerplus.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  17  * 02110-1301, USA.
  18  */
  19
  20 #include "../options/FBOptions.h"
  21
  22 #include "Migration.h"
  23
  24 void Migration::moveOption(
  25         const ZLCategoryKey &oldCategory, const std::string &oldGroup, const std::string &oldName,
  26         const ZLCategoryKey &newCategory, const std::string &newGroup, const std::string &newName,
  27         const std::string &defaultValue
  28 ) {
  29         ZLStringOption newOption(newCategory, newGroup, newName, defaultValue);
  30         const std::string newValue = newOption.value();
  31         ZLStringOption oldOption(oldCategory, oldGroup, oldName, newValue);
  32         const std::string oldValue = oldOption.value();
  33         if (newValue != oldValue) {
  34                 newOption.setValue(oldValue);
  35                 oldOption.setValue(newValue);
  36         }
  37 }
  38
  39 Migration::Migration(const std::string &version) : myVersion(version) {
  40 }
  41
  42 Migration::~Migration() {
  43 }
  44
  45 void Migration::doMigration() {
  46         ZLStringOption versionOption(FBCategoryKey::SYSTEM, "Version", "FBReaderVersion", "0");
  47         if (versionOption.value() < myVersion) {
  48                 doMigrationInternal();
  49         }
  50 }