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-rw-r--r--core/fpdfapi/edit/cpdf_creator.cpp330
-rw-r--r--core/fpdfapi/edit/cpdf_creator.h13
-rw-r--r--core/fpdfapi/edit/cpdf_objectstream.cpp87
-rw-r--r--core/fpdfapi/edit/cpdf_objectstream.h53
-rw-r--r--core/fpdfapi/edit/cpdf_xrefstream.cpp347
-rw-r--r--core/fpdfapi/edit/cpdf_xrefstream.h62
6 files changed, 114 insertions, 778 deletions
diff --git a/core/fpdfapi/edit/cpdf_creator.cpp b/core/fpdfapi/edit/cpdf_creator.cpp
index e782de3dbc..b318c7a7df 100644
--- a/core/fpdfapi/edit/cpdf_creator.cpp
+++ b/core/fpdfapi/edit/cpdf_creator.cpp
@@ -10,8 +10,6 @@
#include "core/fpdfapi/edit/cpdf_encryptor.h"
#include "core/fpdfapi/edit/cpdf_flateencoder.h"
-#include "core/fpdfapi/edit/cpdf_objectstream.h"
-#include "core/fpdfapi/edit/cpdf_xrefstream.h"
#include "core/fpdfapi/parser/cpdf_array.h"
#include "core/fpdfapi/parser/cpdf_crypto_handler.h"
#include "core/fpdfapi/parser/cpdf_document.h"
@@ -24,7 +22,6 @@
namespace {
-const uint32_t kXRefStreamMaxSize = 10000;
const size_t kArchiveBufferSize = 32768;
class CFX_FileBufferArchive : public IFX_ArchiveStream {
@@ -161,40 +158,6 @@ CPDF_Creator::CPDF_Creator(CPDF_Document* pDoc,
CPDF_Creator::~CPDF_Creator() {}
-bool CPDF_Creator::IsXRefNeedEnd() {
- if (!IsIncremental())
- return false;
- return m_pXRefStream->CountIndexArrayItems() >= kXRefStreamMaxSize;
-}
-
-bool CPDF_Creator::WriteIndirectObjectToStream(uint32_t objnum,
- const uint8_t* pBuffer,
- uint32_t dwSize) {
- if (!m_pXRefStream)
- return true;
-
- m_pXRefStream->AddObjectNumberToIndexArray(objnum);
- if (!m_pXRefStream->CompressIndirectObject(objnum, pBuffer, dwSize, this))
- return false;
- if (!IsXRefNeedEnd())
- return true;
- if (!m_pXRefStream->End(this, false) || !m_pXRefStream->Start())
- return false;
- return true;
-}
-
-bool CPDF_Creator::AppendObjectNumberToXRef(uint32_t objnum) {
- if (!m_pXRefStream)
- return true;
-
- m_pXRefStream->AddObjectNumberToIndexArray(objnum);
- if (!IsXRefNeedEnd())
- return true;
- if (!m_pXRefStream->End(this, false) || !m_pXRefStream->Start())
- return false;
- return true;
-}
-
bool CPDF_Creator::WriteStream(const CPDF_Object* pStream,
uint32_t objnum,
CPDF_CryptoHandler* pCrypto) {
@@ -231,41 +194,7 @@ bool CPDF_Creator::WriteIndirectObj(uint32_t objnum, const CPDF_Object* pObj) {
return false;
}
- if (!m_Archive->WriteString("\r\nendobj\r\n") ||
- !AppendObjectNumberToXRef(objnum)) {
- return false;
- }
- return true;
-}
-
-bool CPDF_Creator::WriteIndirectObj(const CPDF_Object* pObj) {
- uint32_t objnum = pObj->GetObjNum();
- if (!m_pXRefStream || (m_pParser && m_pParser->GetObjectGenNum(objnum) > 0) ||
- pObj->IsNumber()) {
- return WriteIndirectObj(objnum, pObj);
- }
-
- CPDF_Dictionary* pDict = pObj->GetDict();
- if (pObj->IsStream()) {
- if (pDict && pDict->GetStringFor("Type") == "XRef")
- return true;
- return WriteIndirectObj(objnum, pObj);
- }
-
- if (pDict &&
- (pDict == m_pDocument->GetRoot() || pDict == m_pEncryptDict ||
- pDict->IsSignatureDict() || pDict->GetStringFor("Type") == "Page")) {
- return WriteIndirectObj(objnum, pObj);
- }
-
- m_pXRefStream->AddObjectNumberToIndexArray(objnum);
- if (!m_pXRefStream->CompressIndirectObject(objnum, pObj, this))
- return false;
- if (!IsXRefNeedEnd())
- return true;
- if (!m_pXRefStream->End(this, false) || !m_pXRefStream->Start())
- return false;
- return true;
+ return m_Archive->WriteString("\r\nendobj\r\n");
}
bool CPDF_Creator::WriteDirectObj(uint32_t objnum,
@@ -388,13 +317,13 @@ bool CPDF_Creator::WriteOldIndirectObject(uint32_t objnum) {
bool bExistInMap = !!m_pDocument->GetIndirectObject(objnum);
const uint8_t object_type = m_pParser->GetObjectType(objnum);
if (m_pParser->IsVersionUpdated() || m_bSecurityChanged || bExistInMap ||
- (object_type == 2 && m_pEncryptDict && !m_pXRefStream)) {
+ (object_type == 2 && m_pEncryptDict)) {
CPDF_Object* pObj = m_pDocument->GetOrParseIndirectObject(objnum);
if (!pObj) {
m_ObjectOffsets.erase(objnum);
return true;
}
- if (!WriteIndirectObj(pObj))
+ if (!WriteIndirectObj(pObj->GetObjNum(), pObj))
return false;
if (!bExistInMap)
m_pDocument->DeleteIndirectObject(objnum);
@@ -405,24 +334,15 @@ bool CPDF_Creator::WriteOldIndirectObject(uint32_t objnum) {
if (!pBuffer)
return true;
if (object_type == 2) {
- if (m_pXRefStream) {
- if (!WriteIndirectObjectToStream(objnum, pBuffer, size)) {
- FX_Free(pBuffer);
- return false;
- }
- } else {
- if (!m_Archive->WriteDWord(objnum) ||
- !m_Archive->WriteString(" 0 obj ") ||
- !m_Archive->WriteBlock(pBuffer, size) ||
- !m_Archive->WriteString("\r\nendobj\r\n")) {
- return false;
- }
+ if (!m_Archive->WriteDWord(objnum) ||
+ !m_Archive->WriteString(" 0 obj ") ||
+ !m_Archive->WriteBlock(pBuffer, size) ||
+ !m_Archive->WriteString("\r\nendobj\r\n")) {
+ return false;
}
} else {
- if (!m_Archive->WriteBlock(pBuffer, size) ||
- !AppendObjectNumberToXRef(objnum)) {
+ if (!m_Archive->WriteBlock(pBuffer, size))
return false;
- }
}
FX_Free(pBuffer);
}
@@ -449,7 +369,7 @@ bool CPDF_Creator::WriteNewObjs() {
continue;
m_ObjectOffsets[objnum] = m_Archive->CurrentOffset();
- if (!WriteIndirectObj(pObj))
+ if (!WriteIndirectObj(pObj->GetObjNum(), pObj))
return false;
}
return true;
@@ -503,12 +423,6 @@ int32_t CPDF_Creator::WriteDoc_Stage1() {
CPDF_Dictionary* pDict = m_pDocument->GetRoot();
m_pMetadata = pDict ? pDict->GetDirectObjectFor("Metadata") : nullptr;
- if (HasObjectStream()) {
- m_pXRefStream = pdfium::MakeUnique<CPDF_XRefStream>();
- m_pXRefStream->Start();
- if (IsIncremental() && m_pParser)
- m_pXRefStream->SetPreviousOffset(m_pParser->GetLastXRefOffset());
- }
m_iStage = 10;
}
if (m_iStage == 10) {
@@ -561,12 +475,6 @@ int32_t CPDF_Creator::WriteDoc_Stage1() {
continue;
m_ObjectOffsets[num] = m_pParser->GetObjectPositionOrZero(num);
- if (HasObjectStream())
- m_pXRefStream->AddObjectNumberToIndexArray(num);
- }
- if (HasObjectStream()) {
- m_pXRefStream->EndXRefStream(this);
- m_pXRefStream->Start();
}
}
m_iStage = 20;
@@ -624,11 +532,7 @@ int32_t CPDF_Creator::WriteDoc_Stage3() {
uint32_t dwLastObjNum = m_dwLastObjNum;
if (m_iStage == 80) {
m_XrefStart = m_Archive->CurrentOffset();
- if (HasObjectStream()) {
- m_pXRefStream->End(this, true);
- m_XrefStart = m_pXRefStream->GetPreviousOffset();
- m_iStage = 90;
- } else if (!IsIncremental() || !m_pParser->IsXRefStream()) {
+ if (!IsIncremental() || !m_pParser->IsXRefStream()) {
if (!IsIncremental() || m_pParser->GetLastXRefOffset() == 0) {
CFX_ByteString str;
str = pdfium::ContainsKey(m_ObjectOffsets, 1)
@@ -722,139 +626,135 @@ int32_t CPDF_Creator::WriteDoc_Stage3() {
int32_t CPDF_Creator::WriteDoc_Stage4() {
ASSERT(m_iStage >= 90);
- if (!HasObjectStream()) {
- bool bXRefStream = IsIncremental() && m_pParser->IsXRefStream();
- if (!bXRefStream) {
- if (!m_Archive->WriteString("trailer\r\n<<"))
- return -1;
- } else {
- if (!m_Archive->WriteDWord(m_pDocument->GetLastObjNum() + 1) ||
- !m_Archive->WriteString(" 0 obj <<")) {
- return -1;
- }
+ bool bXRefStream = IsIncremental() && m_pParser->IsXRefStream();
+ if (!bXRefStream) {
+ if (!m_Archive->WriteString("trailer\r\n<<"))
+ return -1;
+ } else {
+ if (!m_Archive->WriteDWord(m_pDocument->GetLastObjNum() + 1) ||
+ !m_Archive->WriteString(" 0 obj <<")) {
+ return -1;
}
+ }
- if (m_pParser) {
- CPDF_Dictionary* p = m_pParser->GetTrailer();
- for (const auto& it : *p) {
- const CFX_ByteString& key = it.first;
- CPDF_Object* pValue = it.second.get();
- // TODO(ochang): Consolidate with similar check in
- // CPDF_XRefStream::WriteTrailer.
- if (key == "Encrypt" || key == "Size" || key == "Filter" ||
- key == "Index" || key == "Length" || key == "Prev" || key == "W" ||
- key == "XRefStm" || key == "ID") {
- continue;
- }
- if (!m_Archive->WriteString(("/")) ||
- !m_Archive->WriteString(PDF_NameEncode(key).AsStringC())) {
- return -1;
- }
- if (!pValue->IsInline()) {
- if (!m_Archive->WriteString(" ") ||
- !m_Archive->WriteDWord(pValue->GetObjNum()) ||
- !m_Archive->WriteString(" 0 R ")) {
- return -1;
- }
- } else if (!pValue->WriteTo(m_Archive.get())) {
- return -1;
- }
+ if (m_pParser) {
+ CPDF_Dictionary* p = m_pParser->GetTrailer();
+ for (const auto& it : *p) {
+ const CFX_ByteString& key = it.first;
+ CPDF_Object* pValue = it.second.get();
+ if (key == "Encrypt" || key == "Size" || key == "Filter" ||
+ key == "Index" || key == "Length" || key == "Prev" || key == "W" ||
+ key == "XRefStm" || key == "ID") {
+ continue;
}
- } else {
- if (!m_Archive->WriteString("\r\n/Root ") ||
- !m_Archive->WriteDWord(m_pDocument->GetRoot()->GetObjNum()) ||
- !m_Archive->WriteString(" 0 R\r\n")) {
+ if (!m_Archive->WriteString(("/")) ||
+ !m_Archive->WriteString(PDF_NameEncode(key).AsStringC())) {
return -1;
}
- if (m_pDocument->GetInfo()) {
- if (!m_Archive->WriteString("/Info ") ||
- !m_Archive->WriteDWord(m_pDocument->GetInfo()->GetObjNum()) ||
- !m_Archive->WriteString(" 0 R\r\n")) {
+ if (!pValue->IsInline()) {
+ if (!m_Archive->WriteString(" ") ||
+ !m_Archive->WriteDWord(pValue->GetObjNum()) ||
+ !m_Archive->WriteString(" 0 R ")) {
return -1;
}
+ } else if (!pValue->WriteTo(m_Archive.get())) {
+ return -1;
}
}
- if (m_pEncryptDict) {
- if (!m_Archive->WriteString("/Encrypt"))
- return -1;
-
- uint32_t dwObjNum = m_pEncryptDict->GetObjNum();
- if (dwObjNum == 0)
- dwObjNum = m_pDocument->GetLastObjNum() + 1;
- if (!m_Archive->WriteString(" ") || !m_Archive->WriteDWord(dwObjNum) ||
- !m_Archive->WriteString(" 0 R ")) {
+ } else {
+ if (!m_Archive->WriteString("\r\n/Root ") ||
+ !m_Archive->WriteDWord(m_pDocument->GetRoot()->GetObjNum()) ||
+ !m_Archive->WriteString(" 0 R\r\n")) {
+ return -1;
+ }
+ if (m_pDocument->GetInfo()) {
+ if (!m_Archive->WriteString("/Info ") ||
+ !m_Archive->WriteDWord(m_pDocument->GetInfo()->GetObjNum()) ||
+ !m_Archive->WriteString(" 0 R\r\n")) {
return -1;
}
}
+ }
+ if (m_pEncryptDict) {
+ if (!m_Archive->WriteString("/Encrypt"))
+ return -1;
- if (!m_Archive->WriteString("/Size ") ||
- !m_Archive->WriteDWord(m_dwLastObjNum + (bXRefStream ? 2 : 1))) {
+ uint32_t dwObjNum = m_pEncryptDict->GetObjNum();
+ if (dwObjNum == 0)
+ dwObjNum = m_pDocument->GetLastObjNum() + 1;
+ if (!m_Archive->WriteString(" ") || !m_Archive->WriteDWord(dwObjNum) ||
+ !m_Archive->WriteString(" 0 R ")) {
return -1;
}
- if (IsIncremental()) {
- FX_FILESIZE prev = m_pParser->GetLastXRefOffset();
- if (prev) {
- if (!m_Archive->WriteString("/Prev "))
- return -1;
+ }
+
+ if (!m_Archive->WriteString("/Size ") ||
+ !m_Archive->WriteDWord(m_dwLastObjNum + (bXRefStream ? 2 : 1))) {
+ return -1;
+ }
+ if (IsIncremental()) {
+ FX_FILESIZE prev = m_pParser->GetLastXRefOffset();
+ if (prev) {
+ if (!m_Archive->WriteString("/Prev "))
+ return -1;
- char offset_buf[20];
- memset(offset_buf, 0, sizeof(offset_buf));
- FXSYS_i64toa(prev, offset_buf, 10);
- if (!m_Archive->WriteBlock(offset_buf, FXSYS_strlen(offset_buf)))
+ char offset_buf[20];
+ memset(offset_buf, 0, sizeof(offset_buf));
+ FXSYS_i64toa(prev, offset_buf, 10);
+ if (!m_Archive->WriteBlock(offset_buf, FXSYS_strlen(offset_buf)))
+ return -1;
+ }
+ }
+ if (m_pIDArray) {
+ if (!m_Archive->WriteString(("/ID")) ||
+ !m_pIDArray->WriteTo(m_Archive.get())) {
+ return -1;
+ }
+ }
+ if (!bXRefStream) {
+ if (!m_Archive->WriteString(">>"))
+ return -1;
+ } else {
+ if (!m_Archive->WriteString("/W[0 4 1]/Index["))
+ return -1;
+ if (IsIncremental() && m_pParser && m_pParser->GetLastXRefOffset() == 0) {
+ uint32_t i = 0;
+ for (i = 0; i < m_dwLastObjNum; i++) {
+ if (!pdfium::ContainsKey(m_ObjectOffsets, i))
+ continue;
+ if (!m_Archive->WriteDWord(i) || !m_Archive->WriteString(" 1 "))
return -1;
}
- }
- if (m_pIDArray) {
- if (!m_Archive->WriteString(("/ID")) ||
- !m_pIDArray->WriteTo(m_Archive.get())) {
+ if (!m_Archive->WriteString("]/Length ") ||
+ !m_Archive->WriteDWord(m_dwLastObjNum * 5) ||
+ !m_Archive->WriteString(">>stream\r\n")) {
return -1;
}
- }
- if (!bXRefStream) {
- if (!m_Archive->WriteString(">>"))
- return -1;
+ for (i = 0; i < m_dwLastObjNum; i++) {
+ auto it = m_ObjectOffsets.find(i);
+ if (it == m_ObjectOffsets.end())
+ continue;
+ OutputIndex(m_Archive.get(), it->second);
+ }
} else {
- if (!m_Archive->WriteString("/W[0 4 1]/Index["))
- return -1;
- if (IsIncremental() && m_pParser && m_pParser->GetLastXRefOffset() == 0) {
- uint32_t i = 0;
- for (i = 0; i < m_dwLastObjNum; i++) {
- if (!pdfium::ContainsKey(m_ObjectOffsets, i))
- continue;
- if (!m_Archive->WriteDWord(i) || !m_Archive->WriteString(" 1 "))
- return -1;
- }
- if (!m_Archive->WriteString("]/Length ") ||
- !m_Archive->WriteDWord(m_dwLastObjNum * 5) ||
- !m_Archive->WriteString(">>stream\r\n")) {
- return -1;
- }
- for (i = 0; i < m_dwLastObjNum; i++) {
- auto it = m_ObjectOffsets.find(i);
- if (it == m_ObjectOffsets.end())
- continue;
- OutputIndex(m_Archive.get(), it->second);
- }
- } else {
- size_t count = m_NewObjNumArray.size();
- size_t i = 0;
- for (i = 0; i < count; i++) {
- if (!m_Archive->WriteDWord(m_NewObjNumArray[i]) ||
- !m_Archive->WriteString(" 1 ")) {
- return -1;
- }
- }
- if (!m_Archive->WriteString("]/Length ") ||
- !m_Archive->WriteDWord(count * 5) ||
- !m_Archive->WriteString(">>stream\r\n")) {
+ size_t count = m_NewObjNumArray.size();
+ size_t i = 0;
+ for (i = 0; i < count; i++) {
+ if (!m_Archive->WriteDWord(m_NewObjNumArray[i]) ||
+ !m_Archive->WriteString(" 1 ")) {
return -1;
}
- for (i = 0; i < count; ++i)
- OutputIndex(m_Archive.get(), m_ObjectOffsets[m_NewObjNumArray[i]]);
}
- if (!m_Archive->WriteString("\r\nendstream"))
+ if (!m_Archive->WriteString("]/Length ") ||
+ !m_Archive->WriteDWord(count * 5) ||
+ !m_Archive->WriteString(">>stream\r\n")) {
return -1;
+ }
+ for (i = 0; i < count; ++i)
+ OutputIndex(m_Archive.get(), m_ObjectOffsets[m_NewObjNumArray[i]]);
}
+ if (!m_Archive->WriteString("\r\nendstream"))
+ return -1;
}
if (!m_Archive->WriteString("\r\nstartxref\r\n"))
@@ -880,8 +780,6 @@ bool CPDF_Creator::Create(uint32_t flags) {
m_NewObjNumArray.clear();
InitID();
- if (flags & FPDFCREATE_PROGRESSIVE)
- return true;
return Continue() > -1;
}
diff --git a/core/fpdfapi/edit/cpdf_creator.h b/core/fpdfapi/edit/cpdf_creator.h
index 3d85d5e0a4..618fffde79 100644
--- a/core/fpdfapi/edit/cpdf_creator.h
+++ b/core/fpdfapi/edit/cpdf_creator.h
@@ -20,12 +20,9 @@ class CPDF_Dictionary;
class CPDF_Document;
class CPDF_Object;
class CPDF_Parser;
-class CPDF_XRefStream;
#define FPDFCREATE_INCREMENTAL 1
#define FPDFCREATE_NO_ORIGINAL 2
-#define FPDFCREATE_PROGRESSIVE 4
-#define FPDFCREATE_OBJECTSTREAM 8
class CPDF_Creator {
public:
@@ -57,9 +54,6 @@ class CPDF_Creator {
}
bool IsIncremental() const { return !!(m_dwFlags & FPDFCREATE_INCREMENTAL); }
bool IsOriginal() const { return !(m_dwFlags & FPDFCREATE_NO_ORIGINAL); }
- bool HasObjectStream() const {
- return !!(m_dwFlags & FPDFCREATE_OBJECTSTREAM);
- }
private:
void Clear();
@@ -68,8 +62,6 @@ class CPDF_Creator {
void InitNewObjNumOffsets();
void InitID();
- bool AppendObjectNumberToXRef(uint32_t objnum);
-
int32_t WriteDoc_Stage1();
int32_t WriteDoc_Stage2();
int32_t WriteDoc_Stage3();
@@ -78,12 +70,8 @@ class CPDF_Creator {
bool WriteOldIndirectObject(uint32_t objnum);
bool WriteOldObjs();
bool WriteNewObjs();
- bool WriteIndirectObj(const CPDF_Object* pObj);
bool WriteDirectObj(uint32_t objnum, const CPDF_Object* pObj, bool bEncrypt);
bool WriteIndirectObj(uint32_t objnum, const CPDF_Object* pObj);
- bool WriteIndirectObjectToStream(uint32_t objnum,
- const uint8_t* pBuffer,
- uint32_t dwSize);
bool WriteStream(const CPDF_Object* pStream,
uint32_t objnum,
@@ -98,7 +86,6 @@ class CPDF_Creator {
uint32_t m_dwEncryptObjNum;
CFX_RetainPtr<CPDF_CryptoHandler> m_pCryptoHandler;
CPDF_Object* m_pMetadata;
- std::unique_ptr<CPDF_XRefStream> m_pXRefStream;
uint32_t m_dwLastObjNum;
std::unique_ptr<IFX_ArchiveStream> m_Archive;
FX_FILESIZE m_SavedOffset;
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;
-}
diff --git a/core/fpdfapi/edit/cpdf_objectstream.h b/core/fpdfapi/edit/cpdf_objectstream.h
deleted file mode 100644
index 5ad6ec8085..0000000000
--- a/core/fpdfapi/edit/cpdf_objectstream.h
+++ /dev/null
@@ -1,53 +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
-
-#ifndef CORE_FPDFAPI_EDIT_CPDF_OBJECTSTREAM_H_
-#define CORE_FPDFAPI_EDIT_CPDF_OBJECTSTREAM_H_
-
-#include <vector>
-
-#include "core/fxcrt/fx_basic.h"
-#include "third_party/base/stl_util.h"
-
-class CPDF_Creator;
-class CPDF_Object;
-
-class CPDF_ObjectStream {
- public:
- struct Item {
- uint32_t objnum;
- FX_STRSIZE offset;
- };
-
- CPDF_ObjectStream();
- ~CPDF_ObjectStream();
-
- void Start();
- FX_FILESIZE End(CPDF_Creator* pCreator);
- void CompressIndirectObject(uint32_t dwObjNum, const CPDF_Object* pObj);
- void CompressIndirectObject(uint32_t dwObjNum,
- const uint8_t* pBuffer,
- uint32_t dwSize);
-
- bool IsNotFull() const;
- int32_t ItemCount() const { return pdfium::CollectionSize<int32_t>(m_Items); }
- void SetObjectNumber(uint32_t num) { m_dwObjNum = num; }
- uint32_t GetObjectNumber() const { return m_dwObjNum; }
- int32_t GetIndex() const { return m_index; }
- void IncrementIndex() { m_index++; }
-
- uint32_t GetObjectNumberForItem(int index) const {
- return m_Items[index].objnum;
- }
-
- private:
- std::vector<Item> m_Items;
- CFX_ByteTextBuf m_Buffer;
- uint32_t m_dwObjNum;
- int32_t m_index;
-};
-
-#endif // CORE_FPDFAPI_EDIT_CPDF_OBJECTSTREAM_H_
diff --git a/core/fpdfapi/edit/cpdf_xrefstream.cpp b/core/fpdfapi/edit/cpdf_xrefstream.cpp
deleted file mode 100644
index 67793b244d..0000000000
--- a/core/fpdfapi/edit/cpdf_xrefstream.cpp
+++ /dev/null
@@ -1,347 +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_xrefstream.h"
-
-#include "core/fpdfapi/edit/cpdf_creator.h"
-#include "core/fpdfapi/edit/cpdf_flateencoder.h"
-#include "core/fpdfapi/parser/cpdf_array.h"
-#include "core/fpdfapi/parser/cpdf_document.h"
-#include "core/fpdfapi/parser/cpdf_parser.h"
-#include "core/fpdfapi/parser/fpdf_parser_decode.h"
-
-namespace {
-
-const int32_t kObjectStreamMaxSize = 200;
-
-bool WriteTrailer(CPDF_Document* pDocument,
- IFX_ArchiveStream* archive,
- CPDF_Array* pIDArray) {
- CPDF_Parser* pParser = pDocument->GetParser();
- if (pParser) {
- CPDF_Dictionary* p = pParser->GetTrailer();
- for (const auto& it : *p) {
- const CFX_ByteString& key = it.first;
- CPDF_Object* pValue = it.second.get();
- if (key == "Encrypt" || key == "Size" || key == "Filter" ||
- key == "Index" || key == "Length" || key == "Prev" || key == "W" ||
- key == "XRefStm" || key == "Type" || key == "ID") {
- continue;
- }
- if (key == "DecodeParms")
- continue;
- if (!archive->WriteString(("/")) ||
- !archive->WriteString(PDF_NameEncode(key).AsStringC())) {
- return false;
- }
-
- if (!pValue->IsInline()) {
- if (!archive->WriteString(" ") ||
- !archive->WriteDWord(pValue->GetObjNum()) ||
- !archive->WriteString(" 0 R ")) {
- return false;
- }
- } else if (!pValue->WriteTo(archive)) {
- return false;
- }
- }
- if (pIDArray) {
- if (!archive->WriteString(("/ID")) || !pIDArray->WriteTo(archive))
- return false;
- }
- return true;
- }
- if (!archive->WriteString("\r\n/Root ") ||
- !archive->WriteDWord(pDocument->GetRoot()->GetObjNum()) ||
- !archive->WriteString(" 0 R\r\n")) {
- return false;
- }
-
- if (pDocument->GetInfo()) {
- if (!archive->WriteString("/Info ") ||
- !archive->WriteDWord(pDocument->GetInfo()->GetObjNum()) ||
- !archive->WriteString(" 0 R\r\n")) {
- return false;
- }
- }
- if (pIDArray) {
- if (!archive->WriteString(("/ID")) || !pIDArray->WriteTo(archive))
- return false;
- }
- return true;
-}
-
-bool WriteEncryptDictObjectReference(uint32_t dwObjNum,
- IFX_ArchiveStream* archive) {
- ASSERT(archive);
-
- if (!archive->WriteString("/Encrypt") || !archive->WriteString(" ") ||
- !archive->WriteDWord(dwObjNum) || !archive->WriteString(" 0 R ")) {
- return false;
- }
- return true;
-}
-
-void AppendIndex0(CFX_ByteTextBuf& buffer, bool bFirstObject) {
- buffer.AppendByte(0);
- buffer.AppendByte(0);
- buffer.AppendByte(0);
- buffer.AppendByte(0);
- buffer.AppendByte(0);
-
- const uint8_t byte = bFirstObject ? 0xFF : 0;
- buffer.AppendByte(byte);
- buffer.AppendByte(byte);
-}
-
-void AppendIndex1(CFX_ByteTextBuf& buffer, FX_FILESIZE offset) {
- buffer.AppendByte(1);
- buffer.AppendByte(static_cast<uint8_t>(offset >> 24));
- buffer.AppendByte(static_cast<uint8_t>(offset >> 16));
- buffer.AppendByte(static_cast<uint8_t>(offset >> 8));
- buffer.AppendByte(static_cast<uint8_t>(offset));
- buffer.AppendByte(0);
- buffer.AppendByte(0);
-}
-
-void AppendIndex2(CFX_ByteTextBuf& buffer, uint32_t objnum, int32_t index) {
- buffer.AppendByte(2);
- buffer.AppendByte(static_cast<uint8_t>(objnum >> 24));
- buffer.AppendByte(static_cast<uint8_t>(objnum >> 16));
- buffer.AppendByte(static_cast<uint8_t>(objnum >> 8));
- buffer.AppendByte(static_cast<uint8_t>(objnum));
- buffer.AppendByte(static_cast<uint8_t>(index >> 8));
- buffer.AppendByte(static_cast<uint8_t>(index));
-}
-
-} // namespace
-
-CPDF_XRefStream::CPDF_XRefStream()
- : m_PrevOffset(0), m_dwTempObjNum(0), m_iSeg(0) {}
-
-CPDF_XRefStream::~CPDF_XRefStream() {}
-
-bool CPDF_XRefStream::Start() {
- m_IndexArray.clear();
- m_Buffer.Clear();
- m_iSeg = 0;
- return true;
-}
-
-bool CPDF_XRefStream::CompressIndirectObject(uint32_t dwObjNum,
- const CPDF_Object* pObj,
- CPDF_Creator* pCreator) {
- ASSERT(pCreator);
-
- m_ObjStream.CompressIndirectObject(dwObjNum, pObj);
- if (m_ObjStream.ItemCount() < kObjectStreamMaxSize &&
- m_ObjStream.IsNotFull()) {
- return true;
- }
- return EndObjectStream(pCreator, true);
-}
-
-bool CPDF_XRefStream::CompressIndirectObject(uint32_t dwObjNum,
- const uint8_t* pBuffer,
- uint32_t dwSize,
- CPDF_Creator* pCreator) {
- ASSERT(pCreator);
-
- m_ObjStream.CompressIndirectObject(dwObjNum, pBuffer, dwSize);
- if (m_ObjStream.ItemCount() < kObjectStreamMaxSize &&
- m_ObjStream.IsNotFull()) {
- return true;
- }
- return EndObjectStream(pCreator, true);
-}
-
-bool CPDF_XRefStream::EndObjectStream(CPDF_Creator* pCreator, bool bEOF) {
- FX_FILESIZE objOffset = 0;
- if (bEOF) {
- objOffset = m_ObjStream.End(pCreator);
- if (objOffset < 0)
- return false;
- }
-
- if (!m_ObjStream.GetObjectNumber())
- m_ObjStream.SetObjectNumber(pCreator->GetNextObjectNumber());
-
- int32_t iSize = m_ObjStream.ItemCount();
- size_t iSeg = m_IndexArray.size();
- if (!pCreator->IsIncremental()) {
- if (m_dwTempObjNum == 0) {
- AppendIndex0(m_Buffer, true);
- m_dwTempObjNum++;
- }
- uint32_t end_num = m_IndexArray.back().objnum + m_IndexArray.back().count;
- int index = 0;
- for (; m_dwTempObjNum < end_num; m_dwTempObjNum++) {
- if (pCreator->HasObjectNumber(m_dwTempObjNum)) {
- if (index >= iSize ||
- m_dwTempObjNum != m_ObjStream.GetObjectNumberForItem(index)) {
- AppendIndex1(m_Buffer, pCreator->GetObjectOffset(m_dwTempObjNum));
- } else {
- AppendIndex2(m_Buffer, m_ObjStream.GetObjectNumber(), index++);
- }
- } else {
- AppendIndex0(m_Buffer, false);
- }
- }
- if (iSize > 0 && bEOF)
- pCreator->SetObjectOffset(m_ObjStream.GetObjectNumber(), objOffset);
-
- m_iSeg = iSeg;
- if (bEOF)
- m_ObjStream.Start();
-
- return true;
- }
-
- for (auto it = m_IndexArray.begin() + m_iSeg; it != m_IndexArray.end();
- ++it) {
- for (uint32_t m = it->objnum; m < it->objnum + it->count; ++m) {
- if (m_ObjStream.GetIndex() >= iSize ||
- m != m_ObjStream.GetObjectNumberForItem(it - m_IndexArray.begin())) {
- AppendIndex1(m_Buffer, pCreator->GetObjectOffset(m));
- } else {
- AppendIndex2(m_Buffer, m_ObjStream.GetObjectNumber(),
- m_ObjStream.GetIndex());
- m_ObjStream.IncrementIndex();
- }
- }
- }
- if (iSize > 0 && bEOF) {
- AppendIndex1(m_Buffer, objOffset);
- m_IndexArray.push_back({m_ObjStream.GetObjectNumber(), 1});
- iSeg += 1;
- }
- m_iSeg = iSeg;
- if (bEOF)
- m_ObjStream.Start();
-
- return true;
-}
-
-bool CPDF_XRefStream::GenerateXRefStream(CPDF_Creator* pCreator, bool bEOF) {
- uint32_t objnum = pCreator->GetNextObjectNumber();
- IFX_ArchiveStream* archive = pCreator->GetArchive();
- FX_FILESIZE offset_tmp = archive->CurrentOffset();
-
- if (pCreator->IsIncremental()) {
- AddObjectNumberToIndexArray(objnum);
- } else {
- for (; m_dwTempObjNum < pCreator->GetLastObjectNumber(); m_dwTempObjNum++) {
- if (pCreator->HasObjectNumber(m_dwTempObjNum))
- AppendIndex1(m_Buffer, pCreator->GetObjectOffset(m_dwTempObjNum));
- else
- AppendIndex0(m_Buffer, false);
- }
- }
-
- AppendIndex1(m_Buffer, offset_tmp);
-
- if (!archive->WriteDWord(objnum) ||
- !archive->WriteString(" 0 obj\r\n<</Type /XRef/W[1 4 2]/Index[")) {
- return false;
- }
-
- if (!pCreator->IsIncremental()) {
- if (!archive->WriteDWord(0) || !archive->WriteString(" ") ||
- !archive->WriteDWord(objnum + 1)) {
- return false;
- }
- } else {
- for (const auto& pair : m_IndexArray) {
- if (!archive->WriteDWord(pair.objnum) || !archive->WriteString(" ") ||
- !archive->WriteDWord(pair.count) || !archive->WriteString(" ")) {
- return false;
- }
- }
- }
- if (!archive->WriteString("]/Size ") || !archive->WriteDWord(objnum + 1))
- return false;
-
- if (m_PrevOffset > 0) {
- if (!archive->WriteString("/Prev "))
- return false;
-
- char offset_buf[20];
- memset(offset_buf, 0, sizeof(offset_buf));
- FXSYS_i64toa(m_PrevOffset, offset_buf, 10);
- int32_t offset_len = (int32_t)FXSYS_strlen(offset_buf);
- if (!archive->WriteBlock(offset_buf, offset_len))
- return false;
- }
-
- CPDF_FlateEncoder encoder(m_Buffer.GetBuffer(), m_Buffer.GetLength(), true,
- true);
- if (!archive->WriteString("/Filter /FlateDecode") ||
- !archive->WriteString("/DecodeParms<</Columns 7/Predictor 12>>") ||
- !archive->WriteString("/Length ") ||
- !archive->WriteDWord(encoder.GetSize())) {
- return false;
- }
-
- if (bEOF) {
- if (!WriteTrailer(pCreator->GetDocument(), archive, pCreator->GetIDArray()))
- return false;
-
- if (CPDF_Dictionary* encryptDict = pCreator->GetEncryptDict()) {
- uint32_t dwEncryptObjNum = encryptDict->GetObjNum();
- if (dwEncryptObjNum == 0)
- dwEncryptObjNum = pCreator->GetEncryptObjectNumber();
-
- if (!WriteEncryptDictObjectReference(dwEncryptObjNum, archive))
- return false;
- }
- }
-
- if (!archive->WriteString(">>stream\r\n") ||
- !archive->WriteBlock(encoder.GetData(), encoder.GetSize()) ||
- !archive->WriteString("\r\nendstream\r\nendobj\r\n")) {
- return false;
- }
-
- m_PrevOffset = offset_tmp;
- return true;
-}
-
-bool CPDF_XRefStream::End(CPDF_Creator* pCreator, bool bEOF) {
- if (!EndObjectStream(pCreator, bEOF))
- return false;
- return GenerateXRefStream(pCreator, bEOF);
-}
-
-bool CPDF_XRefStream::EndXRefStream(CPDF_Creator* pCreator) {
- if (!pCreator->IsIncremental()) {
- AppendIndex0(m_Buffer, true);
- for (uint32_t i = 1; i < pCreator->GetLastObjectNumber() + 1; i++) {
- if (pCreator->HasObjectNumber(i))
- AppendIndex1(m_Buffer, pCreator->GetObjectOffset(i));
- else
- AppendIndex0(m_Buffer, false);
- }
- } else {
- for (const auto& pair : m_IndexArray) {
- for (uint32_t j = pair.objnum; j < pair.objnum + pair.count; ++j)
- AppendIndex1(m_Buffer, pCreator->GetObjectOffset(j));
- }
- }
- return GenerateXRefStream(pCreator, false);
-}
-
-void CPDF_XRefStream::AddObjectNumberToIndexArray(uint32_t objnum) {
- if (m_IndexArray.empty()) {
- m_IndexArray.push_back({objnum, 1});
- return;
- }
-
- uint32_t next_objnum = m_IndexArray.back().objnum + m_IndexArray.back().count;
- if (objnum == next_objnum)
- m_IndexArray.back().count += 1;
- else
- m_IndexArray.push_back({objnum, 1});
-}
diff --git a/core/fpdfapi/edit/cpdf_xrefstream.h b/core/fpdfapi/edit/cpdf_xrefstream.h
deleted file mode 100644
index 33869c656a..0000000000
--- a/core/fpdfapi/edit/cpdf_xrefstream.h
+++ /dev/null
@@ -1,62 +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
-
-#ifndef CORE_FPDFAPI_EDIT_CPDF_XREFSTREAM_H_
-#define CORE_FPDFAPI_EDIT_CPDF_XREFSTREAM_H_
-
-#include <vector>
-
-#include "core/fpdfapi/edit/cpdf_objectstream.h"
-#include "core/fxcrt/fx_basic.h"
-
-class CPDF_Creator;
-class CPDF_Object;
-
-class CPDF_XRefStream {
- public:
- struct Index {
- uint32_t objnum;
- uint32_t count;
- };
-
- CPDF_XRefStream();
- ~CPDF_XRefStream();
-
- bool Start();
- bool CompressIndirectObject(uint32_t dwObjNum,
- const CPDF_Object* pObj,
- CPDF_Creator* pCreator);
- bool CompressIndirectObject(uint32_t dwObjNum,
- const uint8_t* pBuffer,
- uint32_t dwSize,
- CPDF_Creator* pCreator);
- bool End(CPDF_Creator* pCreator, bool bEOF);
- void AddObjectNumberToIndexArray(uint32_t objnum);
- bool EndXRefStream(CPDF_Creator* pCreator);
-
- FX_FILESIZE GetPreviousOffset() const { return m_PrevOffset; }
- void SetPreviousOffset(FX_FILESIZE offset) { m_PrevOffset = offset; }
-
- uint32_t CountIndexArrayItems() const {
- uint32_t size = 0;
- for (const auto& pair : m_IndexArray)
- size += pair.count;
- return size;
- }
-
- private:
- bool EndObjectStream(CPDF_Creator* pCreator, bool bEOF);
- bool GenerateXRefStream(CPDF_Creator* pCreator, bool bEOF);
-
- std::vector<Index> m_IndexArray;
- FX_FILESIZE m_PrevOffset;
- uint32_t m_dwTempObjNum;
- size_t m_iSeg;
- CPDF_ObjectStream m_ObjStream;
- CFX_ByteTextBuf m_Buffer;
-};
-
-#endif // CORE_FPDFAPI_EDIT_CPDF_XREFSTREAM_H_
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