/// <summary>
/// Экспортирует файл из архива
/// </summary>
/// <param name="entry"></param>
/// <param name="destination"></param>
public void ExtractFile(GameFile entry, string destination)
{
Stream stream = entry.GetStream(FileMode.Open, FileAccess.Read);
FileStream destinationFile = new FileStream(destination, FileMode.Create, FileAccess.Write);
byte[] buf = new byte[SECTOR_SIZE];
while (stream.Position < stream.Length)
{
int read = stream.Read(buf, 0, SECTOR_SIZE);
destinationFile.Write(buf, 0, read);
}
destinationFile.Flush();
destinationFile.Close();
stream.Close();
}
/// <summary>
/// Deletes <see cref="GameFile"/> from the current <see cref="ArchiveFile"/>
/// </summary>
/// <summary xml:lang="ru">
/// Удаляет файл <see cref="GameFile"/> из текущего архива <see cref="ArchiveFile"/>
/// </summary>
/// <param name="entry"><see cref="GameFile"/> to be deleted</param>
/// <param name="entry" xml:lang="ru">Файл <see cref="GameFile"/>, который необходимо удалить</param>
public void DeleteFile(GameFile entry)
{
// We don't really know if we need to actually remove the file itself.
// Maybe it is not needed here and we can just remove entry
// just like in regular file system.
// I'll leave this code commented here. Maybe we'll do this as a feature
// with a flag. Who knows.
/*Stream destinationStream = GetStream(FileMode.Open, FileAccess.Write);
destinationStream.Seek(entry.Offset, SeekOrigin.Begin);
while (destinationStream.Position < entry.Offset + entry.Length)
{
byte[] buf = new byte[SECTOR_SIZE];
destinationStream.Write(buf, 0, SECTOR_SIZE);
}
destinationStream.Close();*/
DeleteFileEntry(entry);
}
/// <summary>
/// Inserts new <see cref="GameFile"/> into current <see cref="ArchiveFile"/>
/// </summary>
/// <summary xml:lang="ru">
/// Добавляет новый файл <see cref="GameFile"/> в текущий архив <see cref="ArchiveFile"/>
/// </summary>
/// <param name="sourceFile"><see cref="GameFile"/> to be inserted into the <see cref="ArchiveFile"/></param>
/// <param name="sourceFile" xml:lang="ru">Файл <see cref="GameFile"/>, который необходимо добавить в архив <see cref="ArchiveFile"/></param>
public void InsertFile(GameFile sourceFile)
{
int offset = CalculateOffsetForNewEntry();
AddNewFileEntry(offset, sourceFile);
Stream sourceStream = sourceFile.GetStream(FileMode.Open, FileAccess.Read);
Stream destinationStream = GetStream(FileMode.Open, FileAccess.Write);
byte[] buf;
destinationStream.Seek(offset, SeekOrigin.Begin);
while (sourceStream.Position < sourceStream.Length)
{
buf = new byte[SECTOR_SIZE];
int read = sourceStream.Read(buf, 0, SECTOR_SIZE);
destinationStream.Write(buf, 0, SECTOR_SIZE);
}
destinationStream.Flush();
destinationStream.Close();
sourceStream.Close();
}
/// <summary> /// Deletes the table of contents entry for the <see cref="GameFile"/> from the current <see cref="ArchiveFile"/> /// </summary> /// <summary xml:lang="ru"> /// Удаляет запись о файле <see cref="GameFile"/> из текущего архива <see cref="ArchiveFile"/> /// </summary> /// <param name="file"><see cref="GameFile"/> which entry needs to be deleted</param> /// <param name="file" xml:lang="ru">Файл <see cref="GameFile"/>, запись которого необходимо удалить</param> public abstract void DeleteFileEntry(GameFile file);
/// <summary> /// Adds new table of contents entry for the new <paramref name="file"/> in defined <paramref name="offset"/> to the <see cref="ArchiveFile"/> /// </summary> /// <summary xml:lang="ru"> /// Добавляет новую запись о файле <paramref name="file"/> в таблицу размещения файлов в архиве <see cref="ArchiveFile"/> с заданным смещением <paramref name="offset"/> /// </summary> /// <param name="offset">Starting offset of a <paramref name="file"/></param> /// <param name="offset" xml:lang="ru">Смещение начала файла <paramref name="file"/></param> /// <param name="file"><see cref="GameFile"/> that needs new entry to be defined</param> /// <param name="file" xml:lang="ru">Файл <see cref="GameFile"/>, запись о котором необходимо добавить в таблицу</param> /// <returns><see cref="GameFile"/> entry for a new file</returns> public abstract GameFile AddNewFileEntry(int offset, GameFile file);
/// <summary>
/// Renames <paramref name="entry"/> to <paramref name="newName"/> in the current <see cref="ArchiveFile"/>
/// </summary>
/// <summary xml:lang="ru">
/// Переименовывает файл <paramref name="entry"/> в <paramref name="newName"/> в текущем архиве <see cref="ArchiveFile"/>
/// </summary>
/// <param name="entry"><see cref="GameFile"/> to be renamed</param>
/// <param name="entry" xml:lang="ru">Файл <see cref="GameFile"/>, который необходимо переименовать</param>
/// <param name="newName">New file name</param>
/// <param name="newName" xml:lang="ru">Новое имя файла</param>
/// <remarks>
/// This function is not implemented yet.
/// </remarks>
/// <remarks xml:lang="ru">
/// Эта функция ещё не реализована.
/// </remarks>
public void RenameFile(GameFile entry, string newName) { }
/// <summary>
/// Replaces <paramref name="oldEntry"/> in the <see cref="ArchiveFile"/> with new file <paramref name="newEntry"/>
/// </summary>
/// <summary xml:lang="ru">
/// Заменяет файл <paramref name="oldEntry"/> в архиве <see cref="ArchiveFile"/> на новый файл <paramref name="newEntry"/>
/// </summary>
/// <param name="oldEntry">Old <see cref="GameFile"/> in the <see cref="ArchiveFile"/> that needs to be replaced</param>
/// <param name="oldEntry" xml:lang="ru">Старый файл <see cref="GameFile"/> в архиве <see cref="ArchiveFile"/>, который нужно заменить</param>
/// <param name="newEntry">A replacement <see cref="GameFile"/> for the <paramref name="oldEntry"/></param>
/// <param name="newEntry" xml:lang="ru">Новый файл <see cref="GameFile"/>, которым необходимо заменить <paramref name="oldEntry"/></param>
/// <remarks>
/// This function is not implemented yet.
/// </remarks>
/// <remarks xml:lang="ru">
/// Эта функция ещё не реализована.
/// </remarks>
public void ReplaceFile(GameFile oldEntry, GameFile newEntry) { }
