| // Copyright 2014 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/fpdf_parser/include/cfdf_document.h" |
| |
| #include "core/fpdfapi/fpdf_edit/include/cpdf_creator.h" |
| #include "core/fpdfapi/fpdf_parser/cpdf_syntax_parser.h" |
| #include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h" |
| |
| CFDF_Document::CFDF_Document() : CPDF_IndirectObjectHolder(NULL) { |
| m_pRootDict = NULL; |
| m_pFile = NULL; |
| m_bOwnFile = FALSE; |
| } |
| CFDF_Document::~CFDF_Document() { |
| if (m_bOwnFile && m_pFile) { |
| m_pFile->Release(); |
| } |
| } |
| CFDF_Document* CFDF_Document::CreateNewDoc() { |
| CFDF_Document* pDoc = new CFDF_Document; |
| pDoc->m_pRootDict = new CPDF_Dictionary; |
| pDoc->AddIndirectObject(pDoc->m_pRootDict); |
| CPDF_Dictionary* pFDFDict = new CPDF_Dictionary; |
| pDoc->m_pRootDict->SetAt("FDF", pFDFDict); |
| return pDoc; |
| } |
| CFDF_Document* CFDF_Document::ParseFile(IFX_FileRead* pFile, FX_BOOL bOwnFile) { |
| if (!pFile) { |
| return NULL; |
| } |
| CFDF_Document* pDoc = new CFDF_Document; |
| pDoc->ParseStream(pFile, bOwnFile); |
| if (!pDoc->m_pRootDict) { |
| delete pDoc; |
| return NULL; |
| } |
| return pDoc; |
| } |
| CFDF_Document* CFDF_Document::ParseMemory(const uint8_t* pData, uint32_t size) { |
| return CFDF_Document::ParseFile(FX_CreateMemoryStream((uint8_t*)pData, size), |
| TRUE); |
| } |
| void CFDF_Document::ParseStream(IFX_FileRead* pFile, FX_BOOL bOwnFile) { |
| m_pFile = pFile; |
| m_bOwnFile = bOwnFile; |
| CPDF_SyntaxParser parser; |
| parser.InitParser(m_pFile, 0); |
| while (1) { |
| bool bNumber; |
| CFX_ByteString word = parser.GetNextWord(&bNumber); |
| if (bNumber) { |
| uint32_t objnum = FXSYS_atoui(word); |
| word = parser.GetNextWord(&bNumber); |
| if (!bNumber) { |
| break; |
| } |
| word = parser.GetNextWord(nullptr); |
| if (word != "obj") { |
| break; |
| } |
| CPDF_Object* pObj = parser.GetObject(this, objnum, 0, true); |
| if (!pObj) { |
| break; |
| } |
| InsertIndirectObject(objnum, pObj); |
| word = parser.GetNextWord(nullptr); |
| if (word != "endobj") { |
| break; |
| } |
| } else { |
| if (word != "trailer") { |
| break; |
| } |
| if (CPDF_Dictionary* pMainDict = |
| ToDictionary(parser.GetObject(this, 0, 0, true))) { |
| m_pRootDict = pMainDict->GetDictBy("Root"); |
| pMainDict->Release(); |
| } |
| break; |
| } |
| } |
| } |
| FX_BOOL CFDF_Document::WriteBuf(CFX_ByteTextBuf& buf) const { |
| if (!m_pRootDict) { |
| return FALSE; |
| } |
| buf << "%FDF-1.2\r\n"; |
| for (const auto& pair : m_IndirectObjs) { |
| buf << pair.first << " 0 obj\r\n" << pair.second << "\r\nendobj\r\n\r\n"; |
| } |
| buf << "trailer\r\n<</Root " << m_pRootDict->GetObjNum() |
| << " 0 R>>\r\n%%EOF\r\n"; |
| return TRUE; |
| } |