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Diffstat (limited to 'src/Common/UserLists/UserListDiff.h')
-rw-r--r-- | src/Common/UserLists/UserListDiff.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/src/Common/UserLists/UserListDiff.h b/src/Common/UserLists/UserListDiff.h new file mode 100644 index 0000000..41b8e81 --- /dev/null +++ b/src/Common/UserLists/UserListDiff.h @@ -0,0 +1,88 @@ +/* + * UserListDiff.h + * + * Copyright (C) 2009 Matthias Schiffer <matthias@gamezock.de> + * + * This program is free software: you can redistribute it and/or modify it + * under the terms of the GNU Lesser General Public License as published by the + * Free Software Foundation, either version 3 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License along + * with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef MAD_COMMON_USERLISTS_USERLISTDIFF_H_ +#define MAD_COMMON_USERLISTS_USERLISTDIFF_H_ + +#include "../export.h" + +#include "UserListEntry.h" +#include <Core/Exception.h> + +#include <set> + +namespace Mad { +namespace Common { +namespace UserLists { + +class UserList; + +class MAD_COMMON_EXPORT UserListDiff { + private: + std::set<UserListEntry> addedUsers; + std::set<UserListEntry> deletedUsers; + std::set<UserListEntry> unchangedUsers; + + public: + UserListDiff() {} + UserListDiff(const UserList *oldList, const UserList *newList); + + void invert() { + addedUsers.swap(deletedUsers); + } + + const std::set<UserListEntry>& getAddedUsers() const { + return addedUsers; + } + + const std::set<UserListEntry>& getDeletedUsers() const { + return deletedUsers; + } + + const std::set<UserListEntry>& getUnchangedUsers() const { + return unchangedUsers; + } + + bool insertAddedUser(UserListEntry user) { + if(deletedUsers.count(user) || unchangedUsers.count(user)) + return false; + + return addedUsers.insert(user).second; + } + + bool insertDeletedUser(UserListEntry user) { + if(addedUsers.count(user) || unchangedUsers.count(user)) + return false; + + return deletedUsers.insert(user).second; + } + + bool insertUnchangedUser(UserListEntry user) { + if(addedUsers.count(user) || deletedUsers.count(user)) + return false; + + return unchangedUsers.insert(user).second; + } +}; + +} +} +} + +#endif /* MAD_COMMON_USERLISTS_USERLISTDIFF_H_ */ |