private void AddEntry(ZipFile workFile, ZipUpdate update) { Stream source = null; if (update.Entry.IsFile) { source = update.GetSource(); if (source == null) { source = updateDataSource_.GetSource(update.Entry, update.Filename); } } if (source != null) { using (source) { long length = source.Length; if (update.OutEntry.Size < 0L) { update.OutEntry.Size = length; } else if (update.OutEntry.Size != length) { throw new ZipException("Entry size/stream size mismatch"); } workFile.WriteLocalEntryHeader(update); long position = workFile.baseStream_.Position; using (Stream stream2 = workFile.GetOutputStream(update.OutEntry)) { CopyBytes(update, stream2, source, length, true); } long num3 = workFile.baseStream_.Position; update.OutEntry.CompressedSize = num3 - position; if ((update.OutEntry.Flags & 8) == 8) { new ZipHelperStream(workFile.baseStream_).WriteDataDescriptor(update.OutEntry); } return; } } workFile.WriteLocalEntryHeader(update); update.OutEntry.CompressedSize = 0L; }
private void CopyEntryDirect(ZipFile workFile, ZipUpdate update, ref long destinationPosition) { bool flag = false; if (update.Entry.Offset == destinationPosition) { flag = true; } if (!flag) { baseStream_.Position = destinationPosition; workFile.WriteLocalEntryHeader(update); destinationPosition = baseStream_.Position; } long offset = update.Entry.Offset + 0x1aL; baseStream_.Seek(offset, SeekOrigin.Begin); uint num3 = ReadLEUshort(); uint num4 = ReadLEUshort(); long sourcePosition = (baseStream_.Position + num3) + num4; if (flag) { if (update.OffsetBasedSize != -1L) { destinationPosition += update.OffsetBasedSize; } else { destinationPosition += (((sourcePosition - offset) + 0x1aL) + update.Entry.CompressedSize) + GetDescriptorSize(update); } } else { if (update.Entry.CompressedSize > 0L) { CopyEntryDataDirect(update, baseStream_, false, ref destinationPosition, ref sourcePosition); } CopyDescriptorBytesDirect(update, baseStream_, ref destinationPosition, sourcePosition); } }
private void ModifyEntry(ZipFile workFile, ZipUpdate update) { workFile.WriteLocalEntryHeader(update); long position = workFile.baseStream_.Position; if (update.Entry.IsFile && (update.Filename != null)) { using (Stream stream = workFile.GetOutputStream(update.OutEntry)) { using (Stream stream2 = GetInputStream(update.Entry)) { CopyBytes(update, stream, stream2, stream2.Length, true); } } } long num2 = workFile.baseStream_.Position; update.Entry.CompressedSize = num2 - position; }
private void CopyEntry(ZipFile workFile, ZipUpdate update) { workFile.WriteLocalEntryHeader(update); if (update.Entry.CompressedSize > 0L) { long offset = update.Entry.Offset + 0x1aL; baseStream_.Seek(offset, SeekOrigin.Begin); uint num2 = ReadLEUshort(); uint num3 = ReadLEUshort(); baseStream_.Seek(num2 + num3, SeekOrigin.Current); CopyBytes(update, workFile.baseStream_, baseStream_, update.Entry.CompressedSize, false); } CopyDescriptorBytes(update, workFile.baseStream_, baseStream_); }