private void FillFolderStartFileIndex()
{
FolderStartFileIndex.Clear();
FileIndexToFolderIndexMap.Clear();
int folderIndex = 0;
int indexInFolder = 0;
for (int i = 0; i < Files.Count; i++)
{
CFileItem file = Files[i];
bool emptyStream = !file.HasStream;
if (emptyStream && indexInFolder == 0)
{
FileIndexToFolderIndexMap.Add(-1);
continue;
}
if (indexInFolder == 0)
{
// v3.13 incorrectly worked with empty folders
// v4.07: Loop for skipping empty folders
for (;;)
{
if (folderIndex >= Folders.Count)
{
throw new InvalidOperationException();
}
FolderStartFileIndex.Add(i); // check it
if (NumUnpackStreamsVector[folderIndex] != 0)
{
break;
}
folderIndex++;
}
}
FileIndexToFolderIndexMap.Add(folderIndex);
if (emptyStream)
{
continue;
}
indexInFolder++;
if (indexInFolder >= NumUnpackStreamsVector[folderIndex])
{
folderIndex++;
indexInFolder = 0;
}
}
}
internal SevenZipFilePart(Stream stream, ArchiveDatabase database, int index, CFileItem fileEntry)
{
this.stream = stream;
this.database = database;
Index = index;
Header = fileEntry;
if (Header.HasStream)
{
Folder = database.Folders[database.FileIndexToFolderIndexMap[index]];
}
}