diff options
Diffstat (limited to 'core/fpdfapi/edit/cpdf_objectstream.cpp')
-rw-r--r-- | core/fpdfapi/edit/cpdf_objectstream.cpp | 87 |
1 files changed, 0 insertions, 87 deletions
diff --git a/core/fpdfapi/edit/cpdf_objectstream.cpp b/core/fpdfapi/edit/cpdf_objectstream.cpp deleted file mode 100644 index 208adacf47..0000000000 --- a/core/fpdfapi/edit/cpdf_objectstream.cpp +++ /dev/null @@ -1,87 +0,0 @@ -// Copyright 2017 PDFium Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. - -// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com - -#include "core/fpdfapi/edit/cpdf_objectstream.h" - -#include "core/fpdfapi/edit/cpdf_creator.h" -#include "core/fpdfapi/edit/cpdf_encryptor.h" -#include "core/fpdfapi/edit/cpdf_flateencoder.h" -#include "core/fpdfapi/parser/fpdf_parser_utility.h" - -namespace { - -const int kObjectStreamMaxLength = 256 * 1024; - -} // namespace - -CPDF_ObjectStream::CPDF_ObjectStream() : m_dwObjNum(0), m_index(0) {} - -CPDF_ObjectStream::~CPDF_ObjectStream() {} - -bool CPDF_ObjectStream::IsNotFull() const { - return m_Buffer.GetLength() < kObjectStreamMaxLength; -} - -void CPDF_ObjectStream::Start() { - m_Items.clear(); - m_Buffer.Clear(); - m_dwObjNum = 0; - m_index = 0; -} - -void CPDF_ObjectStream::CompressIndirectObject(uint32_t dwObjNum, - const CPDF_Object* pObj) { - m_Items.push_back({dwObjNum, m_Buffer.GetLength()}); - m_Buffer << pObj; -} - -void CPDF_ObjectStream::CompressIndirectObject(uint32_t dwObjNum, - const uint8_t* pBuffer, - uint32_t dwSize) { - m_Items.push_back({dwObjNum, m_Buffer.GetLength()}); - m_Buffer.AppendBlock(pBuffer, dwSize); -} - -FX_FILESIZE CPDF_ObjectStream::End(CPDF_Creator* pCreator) { - ASSERT(pCreator); - - if (m_Items.empty()) - return 0; - - IFX_ArchiveStream* archive = pCreator->GetArchive(); - FX_FILESIZE ObjOffset = archive->CurrentOffset(); - if (!m_dwObjNum) - m_dwObjNum = pCreator->GetNextObjectNumber(); - - CFX_ByteTextBuf tempBuffer; - for (const auto& pair : m_Items) - tempBuffer << pair.objnum << " " << pair.offset << " "; - - if (!archive->WriteDWord(m_dwObjNum) || - !archive->WriteString(" 0 obj\r\n<</Type /ObjStm /N ") || - !archive->WriteDWord(pdfium::CollectionSize<uint32_t>(m_Items)) || - !archive->WriteString("/First ") || - !archive->WriteDWord(static_cast<uint32_t>(tempBuffer.GetLength())) || - !archive->WriteString("/Length ")) { - return -1; - } - tempBuffer << m_Buffer; - - CPDF_FlateEncoder encoder(tempBuffer.GetBuffer(), tempBuffer.GetLength(), - true, false); - CPDF_Encryptor encryptor(pCreator->GetCryptoHandler(), m_dwObjNum, - encoder.GetData(), encoder.GetSize()); - - if (!archive->WriteDWord(encryptor.GetSize()) || - !archive->WriteString("/Filter /FlateDecode") || - !archive->WriteString(">>stream\r\n") || - !archive->WriteBlock(encryptor.GetData(), encryptor.GetSize()) || - !archive->WriteString("\r\nendstream\r\nendobj\r\n")) { - return -1; - } - - return ObjOffset; -} |