diff options
Diffstat (limited to 'core/src/fpdfapi/fpdf_parser/cpdf_document.cpp')
| -rw-r--r-- | core/src/fpdfapi/fpdf_parser/cpdf_document.cpp | 354 |
1 files changed, 0 insertions, 354 deletions
diff --git a/core/src/fpdfapi/fpdf_parser/cpdf_document.cpp b/core/src/fpdfapi/fpdf_parser/cpdf_document.cpp deleted file mode 100644 index b5789410e5..0000000000 --- a/core/src/fpdfapi/fpdf_parser/cpdf_document.cpp +++ /dev/null @@ -1,354 +0,0 @@ -// 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/include/fpdfapi/cpdf_document.h" - -#include <set> - -#include "core/include/fpdfapi/cpdf_array.h" -#include "core/include/fpdfapi/cpdf_dictionary.h" -#include "core/include/fpdfapi/cpdf_parser.h" -#include "core/include/fpdfapi/cpdf_reference.h" -#include "core/include/fpdfapi/fpdf_module.h" -#include "core/include/fxge/fx_font.h" -#include "core/src/fpdfapi/fpdf_render/render_int.h" -#include "third_party/base/stl_util.h" - -namespace { - -int CountPages(CPDF_Dictionary* pPages, - std::set<CPDF_Dictionary*>* visited_pages) { - int count = pPages->GetIntegerBy("Count"); - if (count > 0 && count < FPDF_PAGE_MAX_NUM) { - return count; - } - CPDF_Array* pKidList = pPages->GetArrayBy("Kids"); - if (!pKidList) { - return 0; - } - count = 0; - for (FX_DWORD i = 0; i < pKidList->GetCount(); i++) { - CPDF_Dictionary* pKid = pKidList->GetDictAt(i); - if (!pKid || pdfium::ContainsKey(*visited_pages, pKid)) { - continue; - } - if (pKid->KeyExist("Kids")) { - // Use |visited_pages| to help detect circular references of pages. - pdfium::ScopedSetInsertion<CPDF_Dictionary*> local_add(visited_pages, - pKid); - count += CountPages(pKid, visited_pages); - } else { - // This page is a leaf node. - count++; - } - } - pPages->SetAtInteger("Count", count); - return count; -} - -} // namespace - -CPDF_Document::CPDF_Document(CPDF_Parser* pParser) - : CPDF_IndirectObjectHolder(pParser) { - ASSERT(pParser); - m_pRootDict = NULL; - m_pInfoDict = NULL; - m_bLinearized = FALSE; - m_dwFirstPageNo = 0; - m_dwFirstPageObjNum = 0; - m_pDocPage = CPDF_ModuleMgr::Get()->GetPageModule()->CreateDocData(this); - m_pDocRender = CPDF_ModuleMgr::Get()->GetRenderModule()->CreateDocData(this); -} -CPDF_DocPageData* CPDF_Document::GetValidatePageData() { - if (m_pDocPage) { - return m_pDocPage; - } - m_pDocPage = CPDF_ModuleMgr::Get()->GetPageModule()->CreateDocData(this); - return m_pDocPage; -} -CPDF_DocRenderData* CPDF_Document::GetValidateRenderData() { - if (m_pDocRender) { - return m_pDocRender; - } - m_pDocRender = CPDF_ModuleMgr::Get()->GetRenderModule()->CreateDocData(this); - return m_pDocRender; -} -void CPDF_Document::LoadDoc() { - m_LastObjNum = m_pParser->GetLastObjNum(); - CPDF_Object* pRootObj = GetIndirectObject(m_pParser->GetRootObjNum()); - if (!pRootObj) { - return; - } - m_pRootDict = pRootObj->GetDict(); - if (!m_pRootDict) { - return; - } - CPDF_Object* pInfoObj = GetIndirectObject(m_pParser->GetInfoObjNum()); - if (pInfoObj) { - m_pInfoDict = pInfoObj->GetDict(); - } - CPDF_Array* pIDArray = m_pParser->GetIDArray(); - if (pIDArray) { - m_ID1 = pIDArray->GetStringAt(0); - m_ID2 = pIDArray->GetStringAt(1); - } - m_PageList.SetSize(RetrievePageCount()); -} -void CPDF_Document::LoadAsynDoc(CPDF_Dictionary* pLinearized) { - m_bLinearized = TRUE; - m_LastObjNum = m_pParser->GetLastObjNum(); - CPDF_Object* pIndirectObj = GetIndirectObject(m_pParser->GetRootObjNum()); - m_pRootDict = pIndirectObj ? pIndirectObj->GetDict() : nullptr; - if (!m_pRootDict) { - return; - } - pIndirectObj = GetIndirectObject(m_pParser->GetInfoObjNum()); - m_pInfoDict = pIndirectObj ? pIndirectObj->GetDict() : nullptr; - CPDF_Array* pIDArray = m_pParser->GetIDArray(); - if (pIDArray) { - m_ID1 = pIDArray->GetStringAt(0); - m_ID2 = pIDArray->GetStringAt(1); - } - FX_DWORD dwPageCount = 0; - CPDF_Object* pCount = pLinearized->GetElement("N"); - if (ToNumber(pCount)) - dwPageCount = pCount->GetInteger(); - - m_PageList.SetSize(dwPageCount); - CPDF_Object* pNo = pLinearized->GetElement("P"); - if (ToNumber(pNo)) - m_dwFirstPageNo = pNo->GetInteger(); - - CPDF_Object* pObjNum = pLinearized->GetElement("O"); - if (ToNumber(pObjNum)) - m_dwFirstPageObjNum = pObjNum->GetInteger(); -} -void CPDF_Document::LoadPages() { - m_PageList.SetSize(RetrievePageCount()); -} -CPDF_Document::~CPDF_Document() { - if (m_pDocPage) { - CPDF_ModuleMgr::Get()->GetPageModule()->ReleaseDoc(this); - CPDF_ModuleMgr::Get()->GetPageModule()->ClearStockFont(this); - } - if (m_pDocRender) { - CPDF_ModuleMgr::Get()->GetRenderModule()->DestroyDocData(m_pDocRender); - } -} -#define FX_MAX_PAGE_LEVEL 1024 -CPDF_Dictionary* CPDF_Document::_FindPDFPage(CPDF_Dictionary* pPages, - int iPage, - int nPagesToGo, - int level) { - CPDF_Array* pKidList = pPages->GetArrayBy("Kids"); - if (!pKidList) { - if (nPagesToGo == 0) { - return pPages; - } - return NULL; - } - if (level >= FX_MAX_PAGE_LEVEL) { - return NULL; - } - int nKids = pKidList->GetCount(); - for (int i = 0; i < nKids; i++) { - CPDF_Dictionary* pKid = pKidList->GetDictAt(i); - if (!pKid) { - nPagesToGo--; - continue; - } - if (pKid == pPages) { - continue; - } - if (!pKid->KeyExist("Kids")) { - if (nPagesToGo == 0) { - return pKid; - } - m_PageList.SetAt(iPage - nPagesToGo, pKid->GetObjNum()); - nPagesToGo--; - } else { - int nPages = pKid->GetIntegerBy("Count"); - if (nPagesToGo < nPages) { - return _FindPDFPage(pKid, iPage, nPagesToGo, level + 1); - } - nPagesToGo -= nPages; - } - } - return NULL; -} - -CPDF_Dictionary* CPDF_Document::GetPage(int iPage) { - if (iPage < 0 || iPage >= m_PageList.GetSize()) - return nullptr; - - if (m_bLinearized && (iPage == (int)m_dwFirstPageNo)) { - if (CPDF_Dictionary* pDict = - ToDictionary(GetIndirectObject(m_dwFirstPageObjNum))) { - return pDict; - } - } - - int objnum = m_PageList.GetAt(iPage); - if (objnum) { - if (CPDF_Dictionary* pDict = ToDictionary(GetIndirectObject(objnum))) - return pDict; - } - - CPDF_Dictionary* pRoot = GetRoot(); - if (!pRoot) - return nullptr; - - CPDF_Dictionary* pPages = pRoot->GetDictBy("Pages"); - if (!pPages) - return nullptr; - - CPDF_Dictionary* pPage = _FindPDFPage(pPages, iPage, iPage, 0); - if (!pPage) - return nullptr; - - m_PageList.SetAt(iPage, pPage->GetObjNum()); - return pPage; -} - -int CPDF_Document::_FindPageIndex(CPDF_Dictionary* pNode, - FX_DWORD& skip_count, - FX_DWORD objnum, - int& index, - int level) { - if (pNode->KeyExist("Kids")) { - CPDF_Array* pKidList = pNode->GetArrayBy("Kids"); - if (!pKidList) { - return -1; - } - if (level >= FX_MAX_PAGE_LEVEL) { - return -1; - } - FX_DWORD count = pNode->GetIntegerBy("Count"); - if (count <= skip_count) { - skip_count -= count; - index += count; - return -1; - } - if (count && count == pKidList->GetCount()) { - for (FX_DWORD i = 0; i < count; i++) { - if (CPDF_Reference* pKid = ToReference(pKidList->GetElement(i))) { - if (pKid->GetRefObjNum() == objnum) { - m_PageList.SetAt(index + i, objnum); - return index + i; - } - } - } - } - for (FX_DWORD i = 0; i < pKidList->GetCount(); i++) { - CPDF_Dictionary* pKid = pKidList->GetDictAt(i); - if (!pKid) { - continue; - } - if (pKid == pNode) { - continue; - } - int found_index = - _FindPageIndex(pKid, skip_count, objnum, index, level + 1); - if (found_index >= 0) { - return found_index; - } - } - } else { - if (objnum == pNode->GetObjNum()) { - return index; - } - if (skip_count) { - skip_count--; - } - index++; - } - return -1; -} -int CPDF_Document::GetPageIndex(FX_DWORD objnum) { - FX_DWORD nPages = m_PageList.GetSize(); - FX_DWORD skip_count = 0; - FX_BOOL bSkipped = FALSE; - for (FX_DWORD i = 0; i < nPages; i++) { - FX_DWORD objnum1 = m_PageList.GetAt(i); - if (objnum1 == objnum) { - return i; - } - if (!bSkipped && objnum1 == 0) { - skip_count = i; - bSkipped = TRUE; - } - } - CPDF_Dictionary* pRoot = GetRoot(); - if (!pRoot) { - return -1; - } - CPDF_Dictionary* pPages = pRoot->GetDictBy("Pages"); - if (!pPages) { - return -1; - } - int index = 0; - return _FindPageIndex(pPages, skip_count, objnum, index); -} -int CPDF_Document::GetPageCount() const { - return m_PageList.GetSize(); -} - -int CPDF_Document::RetrievePageCount() const { - CPDF_Dictionary* pRoot = GetRoot(); - if (!pRoot) { - return 0; - } - CPDF_Dictionary* pPages = pRoot->GetDictBy("Pages"); - if (!pPages) { - return 0; - } - if (!pPages->KeyExist("Kids")) { - return 1; - } - std::set<CPDF_Dictionary*> visited_pages; - visited_pages.insert(pPages); - return CountPages(pPages, &visited_pages); -} - -FX_DWORD CPDF_Document::GetUserPermissions(FX_BOOL bCheckRevision) const { - if (!m_pParser) { - return (FX_DWORD)-1; - } - return m_pParser->GetPermissions(bCheckRevision); -} - -FX_BOOL CPDF_Document::IsFormStream(FX_DWORD objnum, FX_BOOL& bForm) const { - auto it = m_IndirectObjs.find(objnum); - if (it != m_IndirectObjs.end()) { - CPDF_Stream* pStream = it->second->AsStream(); - bForm = pStream && pStream->GetDict()->GetStringBy("Subtype") == "Form"; - return TRUE; - } - if (!m_pParser) { - bForm = FALSE; - return TRUE; - } - return m_pParser->IsFormStream(objnum, bForm); -} - -void CPDF_Document::ClearPageData() { - if (m_pDocPage) - CPDF_ModuleMgr::Get()->GetPageModule()->ClearDoc(this); -} - -void CPDF_Document::ClearRenderData() { - if (m_pDocRender) - CPDF_ModuleMgr::Get()->GetRenderModule()->ClearDocData(m_pDocRender); -} - -void CPDF_Document::ClearRenderFont() { - if (!m_pDocRender) - return; - - CFX_FontCache* pCache = m_pDocRender->GetFontCache(); - if (pCache) - pCache->FreeCache(FALSE); -} |