// Copyright 2014 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#include "core/fpdfapi/fpdf_parser/include/cfdf_document.h"
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#include "core/fpdfapi/fpdf_edit/include/cpdf_creator.h"
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#include "core/fpdfapi/fpdf_parser/cpdf_syntax_parser.h"
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#include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
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CFDF_Document::CFDF_Document() : CPDF_IndirectObjectHolder(nullptr) {
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m_pRootDict = nullptr;
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m_pFile = nullptr;
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m_bOwnFile = FALSE;
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}
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CFDF_Document::~CFDF_Document() {
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if (m_bOwnFile && m_pFile) {
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m_pFile->Release();
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}
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}
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CFDF_Document* CFDF_Document::CreateNewDoc() {
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CFDF_Document* pDoc = new CFDF_Document;
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pDoc->m_pRootDict = new CPDF_Dictionary;
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pDoc->AddIndirectObject(pDoc->m_pRootDict);
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CPDF_Dictionary* pFDFDict = new CPDF_Dictionary;
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pDoc->m_pRootDict->SetAt("FDF", pFDFDict);
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return pDoc;
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}
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CFDF_Document* CFDF_Document::ParseFile(IFX_FileRead* pFile, FX_BOOL bOwnFile) {
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if (!pFile)
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return nullptr;
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std::unique_ptr<CFDF_Document> pDoc(new CFDF_Document);
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pDoc->ParseStream(pFile, bOwnFile);
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return pDoc->m_pRootDict ? pDoc.release() : nullptr;
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}
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CFDF_Document* CFDF_Document::ParseMemory(const uint8_t* pData, uint32_t size) {
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return CFDF_Document::ParseFile(FX_CreateMemoryStream((uint8_t*)pData, size),
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TRUE);
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}
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void CFDF_Document::ParseStream(IFX_FileRead* pFile, FX_BOOL bOwnFile) {
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m_pFile = pFile;
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m_bOwnFile = bOwnFile;
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CPDF_SyntaxParser parser;
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parser.InitParser(m_pFile, 0);
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while (1) {
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bool bNumber;
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CFX_ByteString word = parser.GetNextWord(&bNumber);
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if (bNumber) {
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uint32_t objnum = FXSYS_atoui(word.c_str());
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word = parser.GetNextWord(&bNumber);
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if (!bNumber)
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break;
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word = parser.GetNextWord(nullptr);
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if (word != "obj")
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break;
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CPDF_Object* pObj = parser.GetObject(this, objnum, 0, true);
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if (!pObj)
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break;
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InsertIndirectObject(objnum, pObj);
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word = parser.GetNextWord(nullptr);
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if (word != "endobj")
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break;
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} else {
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if (word != "trailer")
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break;
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if (CPDF_Dictionary* pMainDict =
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ToDictionary(parser.GetObject(this, 0, 0, true))) {
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m_pRootDict = pMainDict->GetDictBy("Root");
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pMainDict->Release();
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}
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break;
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}
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}
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}
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FX_BOOL CFDF_Document::WriteBuf(CFX_ByteTextBuf& buf) const {
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if (!m_pRootDict) {
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return FALSE;
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}
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buf << "%FDF-1.2\r\n";
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for (const auto& pair : m_IndirectObjs) {
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buf << pair.first << " 0 obj\r\n" << pair.second << "\r\nendobj\r\n\r\n";
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}
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buf << "trailer\r\n<</Root " << m_pRootDict->GetObjNum()
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<< " 0 R>>\r\n%%EOF\r\n";
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return TRUE;
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}
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