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Unified Diff: core/fpdfdoc/doc_tagged.cpp

Issue 2188213002: Remove the document tagged code as it is unused. (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@fpdf_doc
Patch Set: Rebase to master Created 4 years, 5 months ago
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Index: core/fpdfdoc/doc_tagged.cpp
diff --git a/core/fpdfdoc/doc_tagged.cpp b/core/fpdfdoc/doc_tagged.cpp
deleted file mode 100644
index 2bd4347e1872c046d8050e0092be5903f2c8d715..0000000000000000000000000000000000000000
--- a/core/fpdfdoc/doc_tagged.cpp
+++ /dev/null
@@ -1,459 +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 <map>
-
-#include "core/fpdfapi/fpdf_parser/include/cpdf_array.h"
-#include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
-#include "core/fpdfapi/fpdf_parser/include/cpdf_document.h"
-#include "core/fpdfapi/fpdf_parser/include/cpdf_reference.h"
-#include "core/fpdfapi/fpdf_parser/include/cpdf_stream.h"
-#include "core/fpdfdoc/doc_utils.h"
-#include "core/fpdfdoc/include/fpdf_tagged.h"
-#include "core/fpdfdoc/tagged_int.h"
-
-namespace {
-
-const int nMaxRecursion = 32;
-
-bool IsTagged(const CPDF_Document* pDoc) {
- CPDF_Dictionary* pCatalog = pDoc->GetRoot();
- CPDF_Dictionary* pMarkInfo = pCatalog->GetDictBy("MarkInfo");
- return pMarkInfo && pMarkInfo->GetIntegerBy("Marked");
-}
-
-} // namespace
-
-// static
-IPDF_StructTree* IPDF_StructTree::LoadPage(const CPDF_Document* pDoc,
- const CPDF_Dictionary* pPageDict) {
- if (!IsTagged(pDoc))
- return nullptr;
-
- CPDF_StructTreeImpl* pTree = new CPDF_StructTreeImpl(pDoc);
- pTree->LoadPageTree(pPageDict);
- return pTree;
-}
-
-// static.
-IPDF_StructTree* IPDF_StructTree::LoadDoc(const CPDF_Document* pDoc) {
- if (!IsTagged(pDoc))
- return nullptr;
-
- CPDF_StructTreeImpl* pTree = new CPDF_StructTreeImpl(pDoc);
- pTree->LoadDocTree();
- return pTree;
-}
-
-CPDF_StructTreeImpl::CPDF_StructTreeImpl(const CPDF_Document* pDoc)
- : m_pTreeRoot(pDoc->GetRoot()->GetDictBy("StructTreeRoot")),
- m_pRoleMap(m_pTreeRoot ? m_pTreeRoot->GetDictBy("RoleMap") : nullptr),
- m_pPage(nullptr) {}
-
-CPDF_StructTreeImpl::~CPDF_StructTreeImpl() {}
-
-int CPDF_StructTreeImpl::CountTopElements() const {
- return pdfium::CollectionSize<int>(m_Kids);
-}
-
-IPDF_StructElement* CPDF_StructTreeImpl::GetTopElement(int i) const {
- return m_Kids[i].Get();
-}
-
-void CPDF_StructTreeImpl::LoadDocTree() {
- m_pPage = nullptr;
- if (!m_pTreeRoot)
- return;
-
- CPDF_Object* pKids = m_pTreeRoot->GetDirectObjectBy("K");
- if (!pKids)
- return;
-
- if (CPDF_Dictionary* pDict = pKids->AsDictionary()) {
- m_Kids.push_back(CFX_RetainPtr<CPDF_StructElementImpl>(
- new CPDF_StructElementImpl(this, nullptr, pDict)));
- return;
- }
-
- CPDF_Array* pArray = pKids->AsArray();
- if (!pArray)
- return;
-
- for (size_t i = 0; i < pArray->GetCount(); i++) {
- m_Kids.push_back(CFX_RetainPtr<CPDF_StructElementImpl>(
- new CPDF_StructElementImpl(this, nullptr, pArray->GetDictAt(i))));
- }
-}
-
-void CPDF_StructTreeImpl::LoadPageTree(const CPDF_Dictionary* pPageDict) {
- m_pPage = pPageDict;
- if (!m_pTreeRoot)
- return;
-
- CPDF_Object* pKids = m_pTreeRoot->GetDirectObjectBy("K");
- if (!pKids)
- return;
-
- uint32_t dwKids = 0;
- if (pKids->IsDictionary())
- dwKids = 1;
- else if (CPDF_Array* pArray = pKids->AsArray())
- dwKids = pArray->GetCount();
- else
- return;
-
- m_Kids.clear();
- m_Kids.resize(dwKids);
- CPDF_Dictionary* pParentTree = m_pTreeRoot->GetDictBy("ParentTree");
- if (!pParentTree)
- return;
-
- CPDF_NumberTree parent_tree(pParentTree);
- int parents_id = pPageDict->GetIntegerBy("StructParents", -1);
- if (parents_id < 0)
- return;
-
- CPDF_Array* pParentArray = ToArray(parent_tree.LookupValue(parents_id));
- if (!pParentArray)
- return;
-
- std::map<CPDF_Dictionary*, CPDF_StructElementImpl*> element_map;
- for (size_t i = 0; i < pParentArray->GetCount(); i++) {
- if (CPDF_Dictionary* pParent = pParentArray->GetDictAt(i))
- AddPageNode(pParent, element_map);
- }
-}
-
-CPDF_StructElementImpl* CPDF_StructTreeImpl::AddPageNode(
- CPDF_Dictionary* pDict,
- std::map<CPDF_Dictionary*, CPDF_StructElementImpl*>& map,
- int nLevel) {
- if (nLevel > nMaxRecursion)
- return nullptr;
-
- auto it = map.find(pDict);
- if (it != map.end())
- return it->second;
-
- CPDF_StructElementImpl* pElement =
- new CPDF_StructElementImpl(this, nullptr, pDict);
- map[pDict] = pElement;
- CPDF_Dictionary* pParent = pDict->GetDictBy("P");
- if (!pParent || pParent->GetStringBy("Type") == "StructTreeRoot") {
- if (!AddTopLevelNode(pDict, pElement)) {
- pElement->Release();
- map.erase(pDict);
- }
- } else {
- CPDF_StructElementImpl* pParentElement =
- AddPageNode(pParent, map, nLevel + 1);
- FX_BOOL bSave = FALSE;
- for (CPDF_StructKid& kid : pParentElement->m_Kids) {
- if (kid.m_Type != CPDF_StructKid::Element)
- continue;
- if (kid.m_Element.m_pDict != pDict)
- continue;
- kid.m_Element.m_pElement = pElement->Retain();
- bSave = TRUE;
- }
- if (!bSave) {
- pElement->Release();
- map.erase(pDict);
- }
- }
- return pElement;
-}
-FX_BOOL CPDF_StructTreeImpl::AddTopLevelNode(CPDF_Dictionary* pDict,
- CPDF_StructElementImpl* pElement) {
- CPDF_Object* pObj = m_pTreeRoot->GetDirectObjectBy("K");
- if (!pObj)
- return FALSE;
-
- if (pObj->IsDictionary()) {
- if (pObj->GetObjNum() != pDict->GetObjNum())
- return FALSE;
- m_Kids[0].Reset(pElement);
- }
- if (CPDF_Array* pTopKids = pObj->AsArray()) {
- bool bSave = false;
- for (size_t i = 0; i < pTopKids->GetCount(); i++) {
- CPDF_Reference* pKidRef = ToReference(pTopKids->GetObjectAt(i));
- if (pKidRef && pKidRef->GetRefObjNum() == pDict->GetObjNum()) {
- m_Kids[i].Reset(pElement);
- bSave = true;
- }
- }
- if (!bSave)
- return FALSE;
- }
- return TRUE;
-}
-
-CPDF_StructElementImpl::CPDF_StructElementImpl(CPDF_StructTreeImpl* pTree,
- CPDF_StructElementImpl* pParent,
- CPDF_Dictionary* pDict)
- : m_RefCount(0),
- m_pTree(pTree),
- m_pParent(pParent),
- m_pDict(pDict),
- m_Type(pDict->GetStringBy("S")) {
- if (pTree->m_pRoleMap) {
- CFX_ByteString mapped = pTree->m_pRoleMap->GetStringBy(m_Type);
- if (!mapped.IsEmpty())
- m_Type = mapped;
- }
- LoadKids(pDict);
-}
-
-IPDF_StructTree* CPDF_StructElementImpl::GetTree() const {
- return m_pTree;
-}
-
-const CFX_ByteString& CPDF_StructElementImpl::GetType() const {
- return m_Type;
-}
-
-IPDF_StructElement* CPDF_StructElementImpl::GetParent() const {
- return m_pParent;
-}
-
-CPDF_Dictionary* CPDF_StructElementImpl::GetDict() const {
- return m_pDict;
-}
-
-int CPDF_StructElementImpl::CountKids() const {
- return pdfium::CollectionSize<int>(m_Kids);
-}
-
-const CPDF_StructKid& CPDF_StructElementImpl::GetKid(int index) const {
- return m_Kids[index];
-}
-
-CPDF_StructElementImpl::~CPDF_StructElementImpl() {
- for (CPDF_StructKid& kid : m_Kids) {
- if (kid.m_Type == CPDF_StructKid::Element && kid.m_Element.m_pElement)
- static_cast<CPDF_StructElementImpl*>(kid.m_Element.m_pElement)->Release();
- }
-}
-
-CPDF_StructElementImpl* CPDF_StructElementImpl::Retain() {
- m_RefCount++;
- return this;
-}
-void CPDF_StructElementImpl::Release() {
- if (--m_RefCount < 1) {
- delete this;
- }
-}
-void CPDF_StructElementImpl::LoadKids(CPDF_Dictionary* pDict) {
- CPDF_Object* pObj = pDict->GetObjectBy("Pg");
- uint32_t PageObjNum = 0;
- if (CPDF_Reference* pRef = ToReference(pObj))
- PageObjNum = pRef->GetRefObjNum();
-
- CPDF_Object* pKids = pDict->GetDirectObjectBy("K");
- if (!pKids)
- return;
-
- m_Kids.clear();
- if (CPDF_Array* pArray = pKids->AsArray()) {
- m_Kids.resize(pArray->GetCount());
- for (uint32_t i = 0; i < pArray->GetCount(); i++) {
- CPDF_Object* pKid = pArray->GetDirectObjectAt(i);
- LoadKid(PageObjNum, pKid, &m_Kids[i]);
- }
- } else {
- m_Kids.resize(1);
- LoadKid(PageObjNum, pKids, &m_Kids[0]);
- }
-}
-void CPDF_StructElementImpl::LoadKid(uint32_t PageObjNum,
- CPDF_Object* pKidObj,
- CPDF_StructKid* pKid) {
- pKid->m_Type = CPDF_StructKid::Invalid;
- if (!pKidObj)
- return;
-
- if (pKidObj->IsNumber()) {
- if (m_pTree->m_pPage && m_pTree->m_pPage->GetObjNum() != PageObjNum) {
- return;
- }
- pKid->m_Type = CPDF_StructKid::PageContent;
- pKid->m_PageContent.m_ContentId = pKidObj->GetInteger();
- pKid->m_PageContent.m_PageObjNum = PageObjNum;
- return;
- }
-
- CPDF_Dictionary* pKidDict = pKidObj->AsDictionary();
- if (!pKidDict)
- return;
-
- if (CPDF_Reference* pRef = ToReference(pKidDict->GetObjectBy("Pg")))
- PageObjNum = pRef->GetRefObjNum();
-
- CFX_ByteString type = pKidDict->GetStringBy("Type");
- if (type == "MCR") {
- if (m_pTree->m_pPage && m_pTree->m_pPage->GetObjNum() != PageObjNum) {
- return;
- }
- pKid->m_Type = CPDF_StructKid::StreamContent;
- if (CPDF_Reference* pRef = ToReference(pKidDict->GetObjectBy("Stm"))) {
- pKid->m_StreamContent.m_RefObjNum = pRef->GetRefObjNum();
- } else {
- pKid->m_StreamContent.m_RefObjNum = 0;
- }
- pKid->m_StreamContent.m_PageObjNum = PageObjNum;
- pKid->m_StreamContent.m_ContentId = pKidDict->GetIntegerBy("MCID");
- } else if (type == "OBJR") {
- if (m_pTree->m_pPage && m_pTree->m_pPage->GetObjNum() != PageObjNum) {
- return;
- }
- pKid->m_Type = CPDF_StructKid::Object;
- if (CPDF_Reference* pObj = ToReference(pKidDict->GetObjectBy("Obj"))) {
- pKid->m_Object.m_RefObjNum = pObj->GetRefObjNum();
- } else {
- pKid->m_Object.m_RefObjNum = 0;
- }
- pKid->m_Object.m_PageObjNum = PageObjNum;
- } else {
- pKid->m_Type = CPDF_StructKid::Element;
- pKid->m_Element.m_pDict = pKidDict;
- if (!m_pTree->m_pPage) {
- pKid->m_Element.m_pElement =
- new CPDF_StructElementImpl(m_pTree, this, pKidDict);
- } else {
- pKid->m_Element.m_pElement = nullptr;
- }
- }
-}
-static CPDF_Dictionary* FindAttrDict(CPDF_Object* pAttrs,
- const CFX_ByteStringC& owner,
- FX_FLOAT nLevel = 0.0F) {
- if (nLevel > nMaxRecursion)
- return nullptr;
- if (!pAttrs)
- return nullptr;
-
- CPDF_Dictionary* pDict = nullptr;
- if (pAttrs->IsDictionary()) {
- pDict = pAttrs->AsDictionary();
- } else if (CPDF_Stream* pStream = pAttrs->AsStream()) {
- pDict = pStream->GetDict();
- } else if (CPDF_Array* pArray = pAttrs->AsArray()) {
- for (uint32_t i = 0; i < pArray->GetCount(); i++) {
- CPDF_Object* pElement = pArray->GetDirectObjectAt(i);
- pDict = FindAttrDict(pElement, owner, nLevel + 1);
- if (pDict)
- return pDict;
- }
- }
- if (pDict && pDict->GetStringBy("O") == owner)
- return pDict;
- return nullptr;
-}
-CPDF_Object* CPDF_StructElementImpl::GetAttr(const CFX_ByteStringC& owner,
- const CFX_ByteStringC& name,
- FX_BOOL bInheritable,
- FX_FLOAT fLevel) {
- if (fLevel > nMaxRecursion) {
- return nullptr;
- }
- if (bInheritable) {
- CPDF_Object* pAttr = GetAttr(owner, name, FALSE);
- if (pAttr) {
- return pAttr;
- }
- if (!m_pParent) {
- return nullptr;
- }
- return m_pParent->GetAttr(owner, name, TRUE, fLevel + 1);
- }
- CPDF_Object* pA = m_pDict->GetDirectObjectBy("A");
- if (pA) {
- CPDF_Dictionary* pAttrDict = FindAttrDict(pA, owner);
- if (pAttrDict) {
- CPDF_Object* pAttr = pAttrDict->GetDirectObjectBy(CFX_ByteString(name));
- if (pAttr) {
- return pAttr;
- }
- }
- }
- CPDF_Object* pC = m_pDict->GetDirectObjectBy("C");
- if (!pC)
- return nullptr;
-
- CPDF_Dictionary* pClassMap = m_pTree->m_pTreeRoot->GetDictBy("ClassMap");
- if (!pClassMap)
- return nullptr;
-
- if (CPDF_Array* pArray = pC->AsArray()) {
- for (uint32_t i = 0; i < pArray->GetCount(); i++) {
- CFX_ByteString class_name = pArray->GetStringAt(i);
- CPDF_Dictionary* pClassDict = pClassMap->GetDictBy(class_name);
- if (pClassDict && pClassDict->GetStringBy("O") == owner)
- return pClassDict->GetDirectObjectBy(CFX_ByteString(name));
- }
- return nullptr;
- }
- CFX_ByteString class_name = pC->GetString();
- CPDF_Dictionary* pClassDict = pClassMap->GetDictBy(class_name);
- if (pClassDict && pClassDict->GetStringBy("O") == owner)
- return pClassDict->GetDirectObjectBy(CFX_ByteString(name));
- return nullptr;
-}
-CPDF_Object* CPDF_StructElementImpl::GetAttr(const CFX_ByteStringC& owner,
- const CFX_ByteStringC& name,
- FX_BOOL bInheritable,
- int subindex) {
- CPDF_Object* pAttr = GetAttr(owner, name, bInheritable);
- CPDF_Array* pArray = ToArray(pAttr);
- if (!pArray || subindex == -1)
- return pAttr;
-
- if (subindex >= static_cast<int>(pArray->GetCount()))
- return pAttr;
- return pArray->GetDirectObjectAt(subindex);
-}
-CFX_ByteString CPDF_StructElementImpl::GetName(
- const CFX_ByteStringC& owner,
- const CFX_ByteStringC& name,
- const CFX_ByteStringC& default_value,
- FX_BOOL bInheritable,
- int subindex) {
- CPDF_Object* pAttr = GetAttr(owner, name, bInheritable, subindex);
- if (ToName(pAttr))
- return pAttr->GetString();
- return CFX_ByteString(default_value);
-}
-
-FX_ARGB CPDF_StructElementImpl::GetColor(const CFX_ByteStringC& owner,
- const CFX_ByteStringC& name,
- FX_ARGB default_value,
- FX_BOOL bInheritable,
- int subindex) {
- CPDF_Array* pArray = ToArray(GetAttr(owner, name, bInheritable, subindex));
- if (!pArray)
- return default_value;
- return 0xff000000 | ((int)(pArray->GetNumberAt(0) * 255) << 16) |
- ((int)(pArray->GetNumberAt(1) * 255) << 8) |
- (int)(pArray->GetNumberAt(2) * 255);
-}
-FX_FLOAT CPDF_StructElementImpl::GetNumber(const CFX_ByteStringC& owner,
- const CFX_ByteStringC& name,
- FX_FLOAT default_value,
- FX_BOOL bInheritable,
- int subindex) {
- CPDF_Object* pAttr = GetAttr(owner, name, bInheritable, subindex);
- return ToNumber(pAttr) ? pAttr->GetNumber() : default_value;
-}
-int CPDF_StructElementImpl::GetInteger(const CFX_ByteStringC& owner,
- const CFX_ByteStringC& name,
- int default_value,
- FX_BOOL bInheritable,
- int subindex) {
- CPDF_Object* pAttr = GetAttr(owner, name, bInheritable, subindex);
- return ToNumber(pAttr) ? pAttr->GetInteger() : default_value;
-}
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