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path: root/core/fpdfapi/edit/fpdf_edit_create.cpp
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Diffstat (limited to 'core/fpdfapi/edit/fpdf_edit_create.cpp')
-rw-r--r--core/fpdfapi/edit/fpdf_edit_create.cpp590
1 files changed, 265 insertions, 325 deletions
diff --git a/core/fpdfapi/edit/fpdf_edit_create.cpp b/core/fpdfapi/edit/fpdf_edit_create.cpp
index d0482173bb..537c970b53 100644
--- a/core/fpdfapi/edit/fpdf_edit_create.cpp
+++ b/core/fpdfapi/edit/fpdf_edit_create.cpp
@@ -50,27 +50,26 @@ int32_t PDF_CreatorAppendObject(const CPDF_Object* pObj,
FX_FILESIZE& offset) {
int32_t len = 0;
if (!pObj) {
- if (pFile->AppendString(" null") < 0) {
+ if (pFile->AppendString(" null") < 0)
return -1;
- }
+
offset += 5;
return 1;
}
switch (pObj->GetType()) {
case CPDF_Object::NULLOBJ:
- if (pFile->AppendString(" null") < 0) {
+ if (pFile->AppendString(" null") < 0)
return -1;
- }
+
offset += 5;
break;
case CPDF_Object::BOOLEAN:
case CPDF_Object::NUMBER:
- if (pFile->AppendString(" ") < 0) {
+ if (pFile->AppendString(" ") < 0)
return -1;
- }
- if ((len = pFile->AppendString(pObj->GetString().AsStringC())) < 0) {
+ if ((len = pFile->AppendString(pObj->GetString().AsStringC())) < 0)
return -1;
- }
+
offset += len + 1;
break;
case CPDF_Object::STRING: {
@@ -84,13 +83,13 @@ int32_t PDF_CreatorAppendObject(const CPDF_Object* pObj,
break;
}
case CPDF_Object::NAME: {
- if (pFile->AppendString("/") < 0) {
+ if (pFile->AppendString("/") < 0)
return -1;
- }
+
CFX_ByteString str = pObj->GetString();
- if ((len = pFile->AppendString(PDF_NameEncode(str).AsStringC())) < 0) {
+ if ((len = pFile->AppendString(PDF_NameEncode(str).AsStringC())) < 0)
return -1;
- }
+
offset += len + 1;
break;
}
@@ -101,97 +100,90 @@ int32_t PDF_CreatorAppendObject(const CPDF_Object* pObj,
return -1;
if (pFile->AppendString(" 0 R ") < 0)
return -1;
+
offset += len + 6;
break;
}
case CPDF_Object::ARRAY: {
- if (pFile->AppendString("[") < 0) {
+ if (pFile->AppendString("[") < 0)
return -1;
- }
+
offset += 1;
const CPDF_Array* p = pObj->AsArray();
for (size_t i = 0; i < p->GetCount(); i++) {
CPDF_Object* pElement = p->GetObjectAt(i);
if (!pElement->IsInline()) {
- if (pFile->AppendString(" ") < 0) {
+ if (pFile->AppendString(" ") < 0)
return -1;
- }
- if ((len = pFile->AppendDWord(pElement->GetObjNum())) < 0) {
+ if ((len = pFile->AppendDWord(pElement->GetObjNum())) < 0)
return -1;
- }
- if (pFile->AppendString(" 0 R") < 0) {
+ if (pFile->AppendString(" 0 R") < 0)
return -1;
- }
+
offset += len + 5;
} else {
- if (PDF_CreatorAppendObject(pElement, pFile, offset) < 0) {
+ if (PDF_CreatorAppendObject(pElement, pFile, offset) < 0)
return -1;
- }
}
}
- if (pFile->AppendString("]") < 0) {
+ if (pFile->AppendString("]") < 0)
return -1;
- }
+
offset += 1;
break;
}
case CPDF_Object::DICTIONARY: {
- if (pFile->AppendString("<<") < 0) {
+ if (pFile->AppendString("<<") < 0)
return -1;
- }
+
offset += 2;
const CPDF_Dictionary* p = pObj->AsDictionary();
for (const auto& it : *p) {
const CFX_ByteString& key = it.first;
CPDF_Object* pValue = it.second.get();
- if (pFile->AppendString("/") < 0) {
+ if (pFile->AppendString("/") < 0)
return -1;
- }
- if ((len = pFile->AppendString(PDF_NameEncode(key).AsStringC())) < 0) {
+ if ((len = pFile->AppendString(PDF_NameEncode(key).AsStringC())) < 0)
return -1;
- }
+
offset += len + 1;
if (!pValue->IsInline()) {
- if (pFile->AppendString(" ") < 0) {
+ if (pFile->AppendString(" ") < 0)
return -1;
- }
- if ((len = pFile->AppendDWord(pValue->GetObjNum())) < 0) {
+ if ((len = pFile->AppendDWord(pValue->GetObjNum())) < 0)
return -1;
- }
- if (pFile->AppendString(" 0 R") < 0) {
+ if (pFile->AppendString(" 0 R") < 0)
return -1;
- }
+
offset += len + 5;
} else {
- if (PDF_CreatorAppendObject(pValue, pFile, offset) < 0) {
+ if (PDF_CreatorAppendObject(pValue, pFile, offset) < 0)
return -1;
- }
}
}
- if (pFile->AppendString(">>") < 0) {
+ if (pFile->AppendString(">>") < 0)
return -1;
- }
+
offset += 2;
break;
}
case CPDF_Object::STREAM: {
const CPDF_Stream* p = pObj->AsStream();
- if (PDF_CreatorAppendObject(p->GetDict(), pFile, offset) < 0) {
+ if (PDF_CreatorAppendObject(p->GetDict(), pFile, offset) < 0)
return -1;
- }
- if (pFile->AppendString("stream\r\n") < 0) {
+ if (pFile->AppendString("stream\r\n") < 0)
return -1;
- }
+
offset += 8;
auto pAcc = pdfium::MakeRetain<CPDF_StreamAcc>(p);
pAcc->LoadAllData(true);
- if (pFile->AppendBlock(pAcc->GetData(), pAcc->GetSize()) < 0) {
+ if (pFile->AppendBlock(pAcc->GetData(), pAcc->GetSize()) < 0)
return -1;
- }
+
offset += pAcc->GetSize();
- if ((len = pFile->AppendString("\r\nendstream")) < 0) {
+ if ((len = pFile->AppendString("\r\nendstream")) < 0)
return -1;
- }
+
offset += len;
break;
}
@@ -220,72 +212,61 @@ int32_t PDF_CreatorWriteTrailer(CPDF_Document* pDocument,
}
if (key == "DecodeParms")
continue;
-
- if (pFile->AppendString(("/")) < 0) {
+ if (pFile->AppendString(("/")) < 0)
return -1;
- }
- if ((len = pFile->AppendString(PDF_NameEncode(key).AsStringC())) < 0) {
+ if ((len = pFile->AppendString(PDF_NameEncode(key).AsStringC())) < 0)
return -1;
- }
+
offset += len + 1;
if (!pValue->IsInline()) {
- if (pFile->AppendString(" ") < 0) {
+ if (pFile->AppendString(" ") < 0)
return -1;
- }
- if ((len = pFile->AppendDWord(pValue->GetObjNum())) < 0) {
+ if ((len = pFile->AppendDWord(pValue->GetObjNum())) < 0)
return -1;
- }
- if (pFile->AppendString(" 0 R ") < 0) {
+ if (pFile->AppendString(" 0 R ") < 0)
return -1;
- }
+
offset += len + 6;
} else {
- if (PDF_CreatorAppendObject(pValue, pFile, offset) < 0) {
+ if (PDF_CreatorAppendObject(pValue, pFile, offset) < 0)
return -1;
- }
}
}
if (pIDArray) {
- if (pFile->AppendString(("/ID")) < 0) {
+ if (pFile->AppendString(("/ID")) < 0)
return -1;
- }
+
offset += 3;
- if (PDF_CreatorAppendObject(pIDArray, pFile, offset) < 0) {
+ if (PDF_CreatorAppendObject(pIDArray, pFile, offset) < 0)
return -1;
- }
}
return offset;
}
- if (pFile->AppendString("\r\n/Root ") < 0) {
+ if (pFile->AppendString("\r\n/Root ") < 0)
return -1;
- }
- if ((len = pFile->AppendDWord(pDocument->GetRoot()->GetObjNum())) < 0) {
+ if ((len = pFile->AppendDWord(pDocument->GetRoot()->GetObjNum())) < 0)
return -1;
- }
- if (pFile->AppendString(" 0 R\r\n") < 0) {
+ if (pFile->AppendString(" 0 R\r\n") < 0)
return -1;
- }
+
offset += len + 14;
if (pDocument->GetInfo()) {
- if (pFile->AppendString("/Info ") < 0) {
+ if (pFile->AppendString("/Info ") < 0)
return -1;
- }
- if ((len = pFile->AppendDWord(pDocument->GetInfo()->GetObjNum())) < 0) {
+ if ((len = pFile->AppendDWord(pDocument->GetInfo()->GetObjNum())) < 0)
return -1;
- }
- if (pFile->AppendString(" 0 R\r\n") < 0) {
+ if (pFile->AppendString(" 0 R\r\n") < 0)
return -1;
- }
+
offset += len + 12;
}
if (pIDArray) {
- if (pFile->AppendString(("/ID")) < 0) {
+ if (pFile->AppendString(("/ID")) < 0)
return -1;
- }
+
offset += 3;
- if (PDF_CreatorAppendObject(pIDArray, pFile, offset) < 0) {
+ if (PDF_CreatorAppendObject(pIDArray, pFile, offset) < 0)
return -1;
- }
}
return offset;
}
@@ -293,25 +274,23 @@ int32_t PDF_CreatorWriteTrailer(CPDF_Document* pDocument,
int32_t PDF_CreatorWriteEncrypt(const CPDF_Dictionary* pEncryptDict,
uint32_t dwObjNum,
CFX_FileBufferArchive* pFile) {
- if (!pEncryptDict) {
+ if (!pEncryptDict)
return 0;
- }
+
ASSERT(pFile);
FX_FILESIZE offset = 0;
int32_t len = 0;
- if (pFile->AppendString("/Encrypt") < 0) {
+ if (pFile->AppendString("/Encrypt") < 0)
return -1;
- }
+
offset += 8;
- if (pFile->AppendString(" ") < 0) {
+ if (pFile->AppendString(" ") < 0)
return -1;
- }
- if ((len = pFile->AppendDWord(dwObjNum)) < 0) {
+ if ((len = pFile->AppendDWord(dwObjNum)) < 0)
return -1;
- }
- if (pFile->AppendString(" 0 R ") < 0) {
+ if (pFile->AppendString(" 0 R ") < 0)
return -1;
- }
+
offset += len + 6;
return offset;
}
@@ -322,10 +301,12 @@ std::vector<uint8_t> PDF_GenerateFileID(uint32_t dwSeed1, uint32_t dwSeed2) {
void* pContext = FX_Random_MT_Start(dwSeed1);
for (int i = 0; i < 2; ++i)
*pBuffer++ = FX_Random_MT_Generate(pContext);
+
FX_Random_MT_Close(pContext);
pContext = FX_Random_MT_Start(dwSeed2);
for (int i = 0; i < 2; ++i)
*pBuffer++ = FX_Random_MT_Generate(pContext);
+
FX_Random_MT_Close(pContext);
return buffer;
}
@@ -336,6 +317,7 @@ void AppendIndex0(CFX_ByteTextBuf& buffer, bool bFirstObject) {
buffer.AppendByte(0);
buffer.AppendByte(0);
buffer.AppendByte(0);
+
const uint8_t byte = bFirstObject ? 0xFF : 0;
buffer.AppendByte(byte);
buffer.AppendByte(byte);
@@ -418,6 +400,7 @@ class CPDF_FlateEncoder {
void CPDF_FlateEncoder::CloneDict() {
if (m_pDict.IsOwned())
return;
+
m_pDict = ToDictionary(m_pDict->Clone());
ASSERT(m_pDict.IsOwned());
}
@@ -542,37 +525,35 @@ FX_FILESIZE CPDF_ObjectStream::End(CPDF_Creator* pCreator) {
CFX_FileBufferArchive* pFile = &pCreator->m_File;
FX_FILESIZE ObjOffset = pCreator->m_Offset;
- if (!m_dwObjNum) {
+ if (!m_dwObjNum)
m_dwObjNum = ++pCreator->m_dwLastObjNum;
- }
+
CFX_ByteTextBuf tempBuffer;
for (const auto& pair : m_Items)
tempBuffer << pair.objnum << " " << pair.offset << " ";
FX_FILESIZE& offset = pCreator->m_Offset;
int32_t len = pFile->AppendDWord(m_dwObjNum);
- if (len < 0) {
+ if (len < 0)
return -1;
- }
+
offset += len;
- if ((len = pFile->AppendString(" 0 obj\r\n<</Type /ObjStm /N ")) < 0) {
+ if ((len = pFile->AppendString(" 0 obj\r\n<</Type /ObjStm /N ")) < 0)
return -1;
- }
+
offset += len;
uint32_t iCount = pdfium::CollectionSize<uint32_t>(m_Items);
- if ((len = pFile->AppendDWord(iCount)) < 0) {
+ if ((len = pFile->AppendDWord(iCount)) < 0)
return -1;
- }
+
offset += len;
- if (pFile->AppendString("/First ") < 0) {
+ if (pFile->AppendString("/First ") < 0)
return -1;
- }
- if ((len = pFile->AppendDWord((uint32_t)tempBuffer.GetLength())) < 0) {
+ if ((len = pFile->AppendDWord((uint32_t)tempBuffer.GetLength())) < 0)
return -1;
- }
- if (pFile->AppendString("/Length ") < 0) {
+ if (pFile->AppendString("/Length ") < 0)
return -1;
- }
+
offset += len + 15;
tempBuffer << m_Buffer;
@@ -580,24 +561,23 @@ FX_FILESIZE CPDF_ObjectStream::End(CPDF_Creator* pCreator) {
true, false);
CPDF_Encryptor encryptor(pCreator->m_pCryptoHandler.Get(), m_dwObjNum,
encoder.m_pData.Get(), encoder.m_dwSize);
- if ((len = pFile->AppendDWord(encryptor.m_dwSize)) < 0) {
+ if ((len = pFile->AppendDWord(encryptor.m_dwSize)) < 0)
return -1;
- }
+
offset += len;
- if (pFile->AppendString("/Filter /FlateDecode") < 0) {
+ if (pFile->AppendString("/Filter /FlateDecode") < 0)
return -1;
- }
+
offset += 20;
- if ((len = pFile->AppendString(">>stream\r\n")) < 0) {
+ if ((len = pFile->AppendString(">>stream\r\n")) < 0)
return -1;
- }
- if (pFile->AppendBlock(encryptor.m_pData, encryptor.m_dwSize) < 0) {
+ if (pFile->AppendBlock(encryptor.m_pData, encryptor.m_dwSize) < 0)
return -1;
- }
+
offset += len + encryptor.m_dwSize;
- if ((len = pFile->AppendString("\r\nendstream\r\nendobj\r\n")) < 0) {
+ if ((len = pFile->AppendString("\r\nendstream\r\nendobj\r\n")) < 0)
return -1;
- }
+
offset += len;
return ObjOffset;
}
@@ -613,6 +593,7 @@ bool CPDF_XRefStream::Start() {
m_iSeg = 0;
return true;
}
+
int32_t CPDF_XRefStream::CompressIndirectObject(uint32_t dwObjNum,
const CPDF_Object* pObj,
CPDF_Creator* pCreator) {
@@ -627,6 +608,7 @@ int32_t CPDF_XRefStream::CompressIndirectObject(uint32_t dwObjNum,
}
return EndObjectStream(pCreator);
}
+
int32_t CPDF_XRefStream::CompressIndirectObject(uint32_t dwObjNum,
const uint8_t* pBuffer,
uint32_t dwSize,
@@ -647,14 +629,14 @@ int32_t CPDF_XRefStream::EndObjectStream(CPDF_Creator* pCreator, bool bEOF) {
FX_FILESIZE objOffset = 0;
if (bEOF) {
objOffset = m_ObjStream.End(pCreator);
- if (objOffset < 0) {
+ if (objOffset < 0)
return -1;
- }
}
+
uint32_t& dwObjStmNum = m_ObjStream.m_dwObjNum;
- if (!dwObjStmNum) {
+ if (!dwObjStmNum)
dwObjStmNum = ++pCreator->m_dwLastObjNum;
- }
+
int32_t iSize = pdfium::CollectionSize<int32_t>(m_ObjStream.m_Items);
size_t iSeg = m_IndexArray.size();
if (!(pCreator->m_dwFlags & FPDFCREATE_INCREMENTAL)) {
@@ -681,9 +663,9 @@ int32_t CPDF_XRefStream::EndObjectStream(CPDF_Creator* pCreator, bool bEOF) {
pCreator->m_ObjectOffsets[dwObjStmNum] = objOffset;
m_iSeg = iSeg;
- if (bEOF) {
+ if (bEOF)
m_ObjStream.Start();
- }
+
return 1;
}
for (auto it = m_IndexArray.begin() + m_iSeg; it != m_IndexArray.end();
@@ -703,11 +685,12 @@ int32_t CPDF_XRefStream::EndObjectStream(CPDF_Creator* pCreator, bool bEOF) {
iSeg += 1;
}
m_iSeg = iSeg;
- if (bEOF) {
+ if (bEOF)
m_ObjStream.Start();
- }
+
return 1;
}
+
bool CPDF_XRefStream::GenerateXRefStream(CPDF_Creator* pCreator, bool bEOF) {
FX_FILESIZE offset_tmp = pCreator->m_Offset;
uint32_t objnum = ++pCreator->m_dwLastObjNum;
@@ -728,9 +711,9 @@ bool CPDF_XRefStream::GenerateXRefStream(CPDF_Creator* pCreator, bool bEOF) {
AppendIndex1(m_Buffer, offset_tmp);
FX_FILESIZE& offset = pCreator->m_Offset;
int32_t len = pFile->AppendDWord(objnum);
- if (len < 0) {
+ if (len < 0)
return false;
- }
+
offset += len;
if ((len = pFile->AppendString(" 0 obj\r\n<</Type /XRef/W[1 4 2]/Index[")) <
0) {
@@ -738,55 +721,52 @@ bool CPDF_XRefStream::GenerateXRefStream(CPDF_Creator* pCreator, bool bEOF) {
}
offset += len;
if (!bIncremental) {
- if ((len = pFile->AppendDWord(0)) < 0) {
+ if ((len = pFile->AppendDWord(0)) < 0)
return false;
- }
- if ((len = pFile->AppendString(" ")) < 0) {
+ if ((len = pFile->AppendString(" ")) < 0)
return false;
- }
+
offset += len + 1;
- if ((len = pFile->AppendDWord(objnum + 1)) < 0) {
+ if ((len = pFile->AppendDWord(objnum + 1)) < 0)
return false;
- }
+
offset += len;
} else {
for (const auto& pair : m_IndexArray) {
- if ((len = pFile->AppendDWord(pair.objnum)) < 0) {
+ if ((len = pFile->AppendDWord(pair.objnum)) < 0)
return false;
- }
- if (pFile->AppendString(" ") < 0) {
+ if (pFile->AppendString(" ") < 0)
return false;
- }
+
offset += len + 1;
- if ((len = pFile->AppendDWord(pair.count)) < 0) {
+ if ((len = pFile->AppendDWord(pair.count)) < 0)
return false;
- }
- if (pFile->AppendString(" ") < 0) {
+ if (pFile->AppendString(" ") < 0)
return false;
- }
+
offset += len + 1;
}
}
- if (pFile->AppendString("]/Size ") < 0) {
+ if (pFile->AppendString("]/Size ") < 0)
return false;
- }
- if ((len = pFile->AppendDWord(objnum + 1)) < 0) {
+ if ((len = pFile->AppendDWord(objnum + 1)) < 0)
return false;
- }
+
offset += len + 7;
if (m_PrevOffset > 0) {
- if (pFile->AppendString("/Prev ") < 0) {
+ if (pFile->AppendString("/Prev ") < 0)
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 (pFile->AppendBlock(offset_buf, offset_len) < 0) {
+ if (pFile->AppendBlock(offset_buf, offset_len) < 0)
return false;
- }
+
offset += offset_len + 6;
}
+
CPDF_FlateEncoder encoder(m_Buffer.GetBuffer(), m_Buffer.GetLength(), true,
true);
if (pFile->AppendString("/Filter /FlateDecode") < 0)
@@ -801,7 +781,6 @@ bool CPDF_XRefStream::GenerateXRefStream(CPDF_Creator* pCreator, bool bEOF) {
offset += len;
if (pFile->AppendString("/Length ") < 0)
return false;
-
if ((len = pFile->AppendDWord(encoder.m_dwSize)) < 0)
return false;
@@ -814,9 +793,8 @@ bool CPDF_XRefStream::GenerateXRefStream(CPDF_Creator* pCreator, bool bEOF) {
offset += len;
if (pCreator->m_pEncryptDict) {
uint32_t dwEncryptObjNum = pCreator->m_pEncryptDict->GetObjNum();
- if (dwEncryptObjNum == 0) {
+ if (dwEncryptObjNum == 0)
dwEncryptObjNum = pCreator->m_dwEncryptObjNum;
- }
if ((len = PDF_CreatorWriteEncrypt(pCreator->m_pEncryptDict,
dwEncryptObjNum, pFile)) < 0) {
return false;
@@ -830,7 +808,6 @@ bool CPDF_XRefStream::GenerateXRefStream(CPDF_Creator* pCreator, bool bEOF) {
offset += len;
if (pFile->AppendBlock(encoder.m_pData.Get(), encoder.m_dwSize) < 0)
return false;
-
if ((len = pFile->AppendString("\r\nendstream\r\nendobj\r\n")) < 0)
return false;
@@ -840,11 +817,11 @@ bool CPDF_XRefStream::GenerateXRefStream(CPDF_Creator* pCreator, bool bEOF) {
}
bool CPDF_XRefStream::End(CPDF_Creator* pCreator, bool bEOF) {
- if (EndObjectStream(pCreator, bEOF) < 0) {
+ if (EndObjectStream(pCreator, bEOF) < 0)
return false;
- }
return GenerateXRefStream(pCreator, bEOF);
}
+
bool CPDF_XRefStream::EndXRefStream(CPDF_Creator* pCreator) {
if (!(pCreator->m_dwFlags & FPDFCREATE_INCREMENTAL)) {
AppendIndex0(m_Buffer, true);
@@ -863,11 +840,13 @@ bool CPDF_XRefStream::EndXRefStream(CPDF_Creator* pCreator) {
}
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;
@@ -905,7 +884,6 @@ int32_t CPDF_Creator::WriteIndirectObjectToStream(const CPDF_Object* pObj) {
uint32_t objnum = pObj->GetObjNum();
if (m_pParser && m_pParser->GetObjectGenNum(objnum) > 0)
return 1;
-
if (pObj->IsNumber())
return 1;
@@ -939,42 +917,37 @@ int32_t CPDF_Creator::WriteIndirectObjectToStream(const CPDF_Object* pObj) {
int32_t CPDF_Creator::WriteIndirectObjectToStream(uint32_t objnum,
const uint8_t* pBuffer,
uint32_t dwSize) {
- if (!m_pXRefStream) {
+ if (!m_pXRefStream)
return 1;
- }
+
m_pXRefStream->AddObjectNumberToIndexArray(objnum);
int32_t iRet =
m_pXRefStream->CompressIndirectObject(objnum, pBuffer, dwSize, this);
- if (iRet < 1) {
+ if (iRet < 1)
return iRet;
- }
- if (!IsXRefNeedEnd(m_pXRefStream.get(), m_dwFlags)) {
+ if (!IsXRefNeedEnd(m_pXRefStream.get(), m_dwFlags))
return 0;
- }
- if (!m_pXRefStream->End(this)) {
+ if (!m_pXRefStream->End(this))
return -1;
- }
- if (!m_pXRefStream->Start()) {
+ if (!m_pXRefStream->Start())
return -1;
- }
return 0;
}
+
int32_t CPDF_Creator::AppendObjectNumberToXRef(uint32_t objnum) {
- if (!m_pXRefStream) {
+ if (!m_pXRefStream)
return 1;
- }
+
m_pXRefStream->AddObjectNumberToIndexArray(objnum);
- if (!IsXRefNeedEnd(m_pXRefStream.get(), m_dwFlags)) {
+ if (!IsXRefNeedEnd(m_pXRefStream.get(), m_dwFlags))
return 0;
- }
- if (!m_pXRefStream->End(this)) {
+ if (!m_pXRefStream->End(this))
return -1;
- }
- if (!m_pXRefStream->Start()) {
+ if (!m_pXRefStream->Start())
return -1;
- }
return 0;
}
+
int32_t CPDF_Creator::WriteStream(const CPDF_Object* pStream,
uint32_t objnum,
CPDF_CryptoHandler* pCrypto) {
@@ -1006,6 +979,7 @@ int32_t CPDF_Creator::WriteStream(const CPDF_Object* pStream,
m_Offset += len;
return 1;
}
+
int32_t CPDF_Creator::WriteIndirectObj(uint32_t objnum,
const CPDF_Object* pObj) {
int32_t len = m_File.AppendDWord(objnum);
@@ -1034,39 +1008,40 @@ int32_t CPDF_Creator::WriteIndirectObj(uint32_t objnum,
return -1;
return 0;
}
+
int32_t CPDF_Creator::WriteIndirectObj(const CPDF_Object* pObj) {
int32_t iRet = WriteIndirectObjectToStream(pObj);
- if (iRet < 1) {
+ if (iRet < 1)
return iRet;
- }
return WriteIndirectObj(pObj->GetObjNum(), pObj);
}
+
int32_t CPDF_Creator::WriteDirectObj(uint32_t objnum,
const CPDF_Object* pObj,
bool bEncrypt) {
int32_t len = 0;
if (!pObj) {
- if (m_File.AppendString(" null") < 0) {
+ if (m_File.AppendString(" null") < 0)
return -1;
- }
+
m_Offset += 5;
return 1;
}
+
switch (pObj->GetType()) {
case CPDF_Object::NULLOBJ:
- if (m_File.AppendString(" null") < 0) {
+ if (m_File.AppendString(" null") < 0)
return -1;
- }
+
m_Offset += 5;
break;
case CPDF_Object::BOOLEAN:
case CPDF_Object::NUMBER:
- if (m_File.AppendString(" ") < 0) {
+ if (m_File.AppendString(" ") < 0)
return -1;
- }
- if ((len = m_File.AppendString(pObj->GetString().AsStringC())) < 0) {
+ if ((len = m_File.AppendString(pObj->GetString().AsStringC())) < 0)
return -1;
- }
+
m_Offset += len + 1;
break;
case CPDF_Object::STRING: {
@@ -1074,9 +1049,9 @@ int32_t CPDF_Creator::WriteDirectObj(uint32_t objnum,
bool bHex = pObj->AsString()->IsHex();
if (!m_pCryptoHandler || !bEncrypt) {
CFX_ByteString content = PDF_EncodeString(str, bHex);
- if ((len = m_File.AppendString(content.AsStringC())) < 0) {
+ if ((len = m_File.AppendString(content.AsStringC())) < 0)
return -1;
- }
+
m_Offset += len;
break;
}
@@ -1085,9 +1060,9 @@ int32_t CPDF_Creator::WriteDirectObj(uint32_t objnum,
CFX_ByteString content = PDF_EncodeString(
CFX_ByteString((const char*)encryptor.m_pData, encryptor.m_dwSize),
bHex);
- if ((len = m_File.AppendString(content.AsStringC())) < 0) {
+ if ((len = m_File.AppendString(content.AsStringC())) < 0)
return -1;
- }
+
m_Offset += len;
break;
}
@@ -1104,7 +1079,6 @@ int32_t CPDF_Creator::WriteDirectObj(uint32_t objnum,
}
if (WriteDirectObj(objnum, encoder.m_pDict.Get()) < 0)
return -1;
-
if ((len = m_File.AppendString("stream\r\n")) < 0)
return -1;
@@ -1120,13 +1094,13 @@ int32_t CPDF_Creator::WriteDirectObj(uint32_t objnum,
break;
}
case CPDF_Object::NAME: {
- if (m_File.AppendString("/") < 0) {
+ if (m_File.AppendString("/") < 0)
return -1;
- }
+
CFX_ByteString str = pObj->GetString();
- if ((len = m_File.AppendString(PDF_NameEncode(str).AsStringC())) < 0) {
+ if ((len = m_File.AppendString(PDF_NameEncode(str).AsStringC())) < 0)
return -1;
- }
+
m_Offset += len + 1;
break;
}
@@ -1141,33 +1115,30 @@ int32_t CPDF_Creator::WriteDirectObj(uint32_t objnum,
break;
}
case CPDF_Object::ARRAY: {
- if (m_File.AppendString("[") < 0) {
+ if (m_File.AppendString("[") < 0)
return -1;
- }
+
m_Offset += 1;
const CPDF_Array* p = pObj->AsArray();
for (size_t i = 0; i < p->GetCount(); i++) {
CPDF_Object* pElement = p->GetObjectAt(i);
if (!pElement->IsInline()) {
- if (m_File.AppendString(" ") < 0) {
+ if (m_File.AppendString(" ") < 0)
return -1;
- }
- if ((len = m_File.AppendDWord(pElement->GetObjNum())) < 0) {
+ if ((len = m_File.AppendDWord(pElement->GetObjNum())) < 0)
return -1;
- }
- if (m_File.AppendString(" 0 R") < 0) {
+ if (m_File.AppendString(" 0 R") < 0)
return -1;
- }
+
m_Offset += len + 5;
} else {
- if (WriteDirectObj(objnum, pElement) < 0) {
+ if (WriteDirectObj(objnum, pElement) < 0)
return -1;
- }
}
}
- if (m_File.AppendString("]") < 0) {
+ if (m_File.AppendString("]") < 0)
return -1;
- }
+
m_Offset += 1;
break;
}
@@ -1184,42 +1155,39 @@ int32_t CPDF_Creator::WriteDirectObj(uint32_t objnum,
bool bSignValue = false;
const CFX_ByteString& key = it.first;
CPDF_Object* pValue = it.second.get();
- if (m_File.AppendString("/") < 0) {
+ if (m_File.AppendString("/") < 0)
return -1;
- }
- if ((len = m_File.AppendString(PDF_NameEncode(key).AsStringC())) < 0) {
+ if ((len = m_File.AppendString(PDF_NameEncode(key).AsStringC())) < 0)
return -1;
- }
+
m_Offset += len + 1;
- if (bSignDict && key == "Contents") {
+ if (bSignDict && key == "Contents")
bSignValue = true;
- }
+
if (!pValue->IsInline()) {
- if (m_File.AppendString(" ") < 0) {
+ if (m_File.AppendString(" ") < 0)
return -1;
- }
- if ((len = m_File.AppendDWord(pValue->GetObjNum())) < 0) {
+ if ((len = m_File.AppendDWord(pValue->GetObjNum())) < 0)
return -1;
- }
- if (m_File.AppendString(" 0 R ") < 0) {
+ if (m_File.AppendString(" 0 R ") < 0)
return -1;
- }
+
m_Offset += len + 6;
} else {
- if (WriteDirectObj(objnum, pValue, !bSignValue) < 0) {
+ if (WriteDirectObj(objnum, pValue, !bSignValue) < 0)
return -1;
- }
}
}
- if (m_File.AppendString(">>") < 0) {
+ if (m_File.AppendString(">>") < 0)
return -1;
- }
+
m_Offset += 2;
break;
}
}
return 1;
}
+
int32_t CPDF_Creator::WriteOldIndirectObject(uint32_t objnum) {
if (m_pParser->IsObjectFreeOrNull(objnum))
return 0;
@@ -1235,19 +1203,16 @@ int32_t CPDF_Creator::WriteOldIndirectObject(uint32_t objnum) {
m_ObjectOffsets.erase(objnum);
return 0;
}
- if (WriteIndirectObj(pObj)) {
+ if (WriteIndirectObj(pObj))
return -1;
- }
- if (!bExistInMap) {
+ if (!bExistInMap)
m_pDocument->DeleteIndirectObject(objnum);
- }
} else {
uint8_t* pBuffer;
uint32_t size;
m_pParser->GetIndirectBinary(objnum, pBuffer, size);
- if (!pBuffer) {
+ if (!pBuffer)
return 0;
- }
if (object_type == 2) {
if (m_pXRefStream) {
if (WriteIndirectObjectToStream(objnum, pBuffer, size) < 0) {
@@ -1256,36 +1221,35 @@ int32_t CPDF_Creator::WriteOldIndirectObject(uint32_t objnum) {
}
} else {
int32_t len = m_File.AppendDWord(objnum);
- if (len < 0) {
+ if (len < 0)
return -1;
- }
- if (m_File.AppendString(" 0 obj ") < 0) {
+ if (m_File.AppendString(" 0 obj ") < 0)
return -1;
- }
+
m_Offset += len + 7;
- if (m_File.AppendBlock(pBuffer, size) < 0) {
+ if (m_File.AppendBlock(pBuffer, size) < 0)
return -1;
- }
+
m_Offset += size;
- if (m_File.AppendString("\r\nendobj\r\n") < 0) {
+ if (m_File.AppendString("\r\nendobj\r\n") < 0)
return -1;
- }
+
m_Offset += 10;
}
} else {
- if (m_File.AppendBlock(pBuffer, size) < 0) {
+ if (m_File.AppendBlock(pBuffer, size) < 0)
return -1;
- }
+
m_Offset += size;
- if (AppendObjectNumberToXRef(objnum) < 0) {
+ if (AppendObjectNumberToXRef(objnum) < 0)
return -1;
- }
}
FX_Free(pBuffer);
}
return 1;
}
-int32_t CPDF_Creator::WriteOldObjs(IFX_Pause* pPause) {
+
+int32_t CPDF_Creator::WriteOldObjs() {
uint32_t nLastObjNum = m_pParser->GetLastObjNum();
if (!m_pParser->IsValidObjectNumber(nLastObjNum))
return 0;
@@ -1294,19 +1258,13 @@ int32_t CPDF_Creator::WriteOldObjs(IFX_Pause* pPause) {
int32_t iRet = WriteOldIndirectObject(objnum);
if (iRet < 0)
return iRet;
-
if (!iRet)
continue;
-
- if (pPause && pPause->NeedToPauseNow()) {
- m_CurObjNum = objnum + 1;
- return 1;
- }
}
return 0;
}
-int32_t CPDF_Creator::WriteNewObjs(bool bIncremental, IFX_Pause* pPause) {
+int32_t CPDF_Creator::WriteNewObjs(bool bIncremental) {
uint32_t iCount = pdfium::CollectionSize<uint32_t>(m_NewObjNumArray);
uint32_t index = m_CurObjNum;
while (index < iCount) {
@@ -1321,10 +1279,6 @@ int32_t CPDF_Creator::WriteNewObjs(bool bIncremental, IFX_Pause* pPause) {
return -1;
index++;
- if (pPause && pPause->NeedToPauseNow()) {
- m_CurObjNum = index;
- return 1;
- }
}
return 0;
}
@@ -1368,15 +1322,14 @@ void CPDF_Creator::InitNewObjNumOffsets() {
}
}
-int32_t CPDF_Creator::WriteDoc_Stage1(IFX_Pause* pPause) {
+int32_t CPDF_Creator::WriteDoc_Stage1() {
ASSERT(m_iStage > -1 || m_iStage < 20);
if (m_iStage == 0) {
- if (!m_pParser) {
+ if (!m_pParser)
m_dwFlags &= ~FPDFCREATE_INCREMENTAL;
- }
- if (m_bSecurityChanged && (m_dwFlags & FPDFCREATE_NO_ORIGINAL) == 0) {
+ if (m_bSecurityChanged && (m_dwFlags & FPDFCREATE_NO_ORIGINAL) == 0)
m_dwFlags &= ~FPDFCREATE_INCREMENTAL;
- }
+
CPDF_Dictionary* pDict = m_pDocument->GetRoot();
m_pMetadata = pDict ? pDict->GetDirectObjectFor("Metadata") : nullptr;
if (m_dwFlags & FPDFCREATE_OBJECTSTREAM) {
@@ -1391,24 +1344,24 @@ int32_t CPDF_Creator::WriteDoc_Stage1(IFX_Pause* pPause) {
}
if (m_iStage == 10) {
if ((m_dwFlags & FPDFCREATE_INCREMENTAL) == 0) {
- if (m_File.AppendString("%PDF-1.") < 0) {
+ if (m_File.AppendString("%PDF-1.") < 0)
return -1;
- }
+
m_Offset += 7;
int32_t version = 7;
- if (m_FileVersion) {
+ if (m_FileVersion)
version = m_FileVersion;
- } else if (m_pParser) {
+ else if (m_pParser)
version = m_pParser->GetFileVersion();
- }
+
int32_t len = m_File.AppendDWord(version % 10);
- if (len < 0) {
+ if (len < 0)
return -1;
- }
+
m_Offset += len;
- if ((len = m_File.AppendString("\r\n%\xA1\xB3\xC5\xD7\r\n")) < 0) {
+ if ((len = m_File.AppendString("\r\n%\xA1\xB3\xC5\xD7\r\n")) < 0)
return -1;
- }
+
m_Offset += len;
InitOldObjNumOffsets();
m_iStage = 20;
@@ -1436,10 +1389,6 @@ int32_t CPDF_Creator::WriteDoc_Stage1(IFX_Pause* pPause) {
return -1;
src_size -= block_size;
- if (pPause && pPause->NeedToPauseNow()) {
- m_SavedOffset = src_size;
- return 1;
- }
}
}
if ((m_dwFlags & FPDFCREATE_NO_ORIGINAL) == 0 &&
@@ -1452,9 +1401,8 @@ int32_t CPDF_Creator::WriteDoc_Stage1(IFX_Pause* pPause) {
continue;
m_ObjectOffsets[objnum] = m_pParser->GetObjectPositionOrZero(objnum);
- if (bObjStm) {
+ if (bObjStm)
m_pXRefStream->AddObjectNumberToIndexArray(objnum);
- }
}
if (bObjStm) {
m_pXRefStream->EndXRefStream(this);
@@ -1466,7 +1414,8 @@ int32_t CPDF_Creator::WriteDoc_Stage1(IFX_Pause* pPause) {
InitNewObjNumOffsets();
return m_iStage;
}
-int32_t CPDF_Creator::WriteDoc_Stage2(IFX_Pause* pPause) {
+
+int32_t CPDF_Creator::WriteDoc_Stage2() {
ASSERT(m_iStage >= 20 || m_iStage < 30);
if (m_iStage == 20) {
if ((m_dwFlags & FPDFCREATE_INCREMENTAL) == 0 && m_pParser) {
@@ -1477,10 +1426,10 @@ int32_t CPDF_Creator::WriteDoc_Stage2(IFX_Pause* pPause) {
}
}
if (m_iStage == 21) {
- int32_t iRet = WriteOldObjs(pPause);
- if (iRet) {
+ int32_t iRet = WriteOldObjs();
+ if (iRet)
return iRet;
- }
+
m_iStage = 25;
}
if (m_iStage == 25) {
@@ -1488,11 +1437,10 @@ int32_t CPDF_Creator::WriteDoc_Stage2(IFX_Pause* pPause) {
m_iStage = 26;
}
if (m_iStage == 26) {
- int32_t iRet =
- WriteNewObjs((m_dwFlags & FPDFCREATE_INCREMENTAL) != 0, pPause);
- if (iRet) {
+ int32_t iRet = WriteNewObjs((m_dwFlags & FPDFCREATE_INCREMENTAL) != 0);
+ if (iRet)
return iRet;
- }
+
m_iStage = 27;
}
if (m_iStage == 27) {
@@ -1511,7 +1459,8 @@ int32_t CPDF_Creator::WriteDoc_Stage2(IFX_Pause* pPause) {
}
return m_iStage;
}
-int32_t CPDF_Creator::WriteDoc_Stage3(IFX_Pause* pPause) {
+
+int32_t CPDF_Creator::WriteDoc_Stage3() {
ASSERT(m_iStage >= 80 || m_iStage < 90);
uint32_t dwLastObjNum = m_dwLastObjNum;
if (m_iStage == 80) {
@@ -1528,15 +1477,15 @@ int32_t CPDF_Creator::WriteDoc_Stage3(IFX_Pause* pPause) {
str = pdfium::ContainsKey(m_ObjectOffsets, 1)
? "xref\r\n"
: "xref\r\n0 1\r\n0000000000 65535 f\r\n";
- if (m_File.AppendString(str.AsStringC()) < 0) {
+ if (m_File.AppendString(str.AsStringC()) < 0)
return -1;
- }
+
m_CurObjNum = 1;
m_iStage = 81;
} else {
- if (m_File.AppendString("xref\r\n") < 0) {
+ if (m_File.AppendString("xref\r\n") < 0)
return -1;
- }
+
m_CurObjNum = 0;
m_iStage = 82;
}
@@ -1569,17 +1518,11 @@ int32_t CPDF_Creator::WriteDoc_Stage3(IFX_Pause* pPause) {
while (i < j) {
str.Format("%010d 00000 n\r\n", m_ObjectOffsets[i++]);
- if (m_File.AppendBlock(str.c_str(), str.GetLength()) < 0) {
+ if (m_File.AppendBlock(str.c_str(), str.GetLength()) < 0)
return -1;
- }
}
- if (i > dwLastObjNum) {
+ if (i > dwLastObjNum)
break;
- }
- if (pPause && pPause->NeedToPauseNow()) {
- m_CurObjNum = i;
- return 1;
- }
}
m_iStage = 90;
}
@@ -1599,47 +1542,41 @@ int32_t CPDF_Creator::WriteDoc_Stage3(IFX_Pause* pPause) {
objnum = dwCurrent;
}
objnum = m_NewObjNumArray[i];
- if (objnum == 1) {
+ if (objnum == 1)
str.Format("0 %d\r\n0000000000 65535 f\r\n", j - i + 1);
- } else {
+ else
str.Format("%d %d\r\n", objnum, j - i);
- }
- if (m_File.AppendBlock(str.c_str(), str.GetLength()) < 0) {
+
+ if (m_File.AppendBlock(str.c_str(), str.GetLength()) < 0)
return -1;
- }
+
while (i < j) {
objnum = m_NewObjNumArray[i++];
str.Format("%010d 00000 n\r\n", m_ObjectOffsets[objnum]);
if (m_File.AppendBlock(str.c_str(), str.GetLength()) < 0)
return -1;
}
- if (pPause && (i % 100) == 0 && pPause->NeedToPauseNow()) {
- m_CurObjNum = i;
- return 1;
- }
}
m_iStage = 90;
}
return m_iStage;
}
-int32_t CPDF_Creator::WriteDoc_Stage4(IFX_Pause* pPause) {
+int32_t CPDF_Creator::WriteDoc_Stage4() {
ASSERT(m_iStage >= 90);
if ((m_dwFlags & FPDFCREATE_OBJECTSTREAM) == 0) {
bool bXRefStream =
(m_dwFlags & FPDFCREATE_INCREMENTAL) != 0 && m_pParser->IsXRefStream();
if (!bXRefStream) {
- if (m_File.AppendString("trailer\r\n<<") < 0) {
+ if (m_File.AppendString("trailer\r\n<<") < 0)
return -1;
- }
} else {
- if (m_File.AppendDWord(m_pDocument->GetLastObjNum() + 1) < 0) {
+ if (m_File.AppendDWord(m_pDocument->GetLastObjNum() + 1) < 0)
return -1;
- }
- if (m_File.AppendString(" 0 obj <<") < 0) {
+ if (m_File.AppendString(" 0 obj <<") < 0)
return -1;
- }
}
+
if (m_pParser) {
CPDF_Dictionary* p = m_pParser->GetTrailer();
for (const auto& it : *p) {
@@ -1815,7 +1752,7 @@ bool CPDF_Creator::Create(uint32_t flags) {
InitID();
if (flags & FPDFCREATE_PROGRESSIVE)
return true;
- return Continue(nullptr) > -1;
+ return Continue() > -1;
}
void CPDF_Creator::InitID(bool bDefault) {
@@ -1833,9 +1770,9 @@ void CPDF_Creator::InitID(bool bDefault) {
m_pIDArray->AddNew<CPDF_String>(bsBuffer, true);
}
}
- if (!bDefault) {
+ if (!bDefault)
return;
- }
+
if (pOldIDArray) {
CPDF_Object* pID2 = pOldIDArray->GetObjectAt(1);
if ((m_dwFlags & FPDFCREATE_INCREMENTAL) && m_pEncryptDict && pID2) {
@@ -1848,6 +1785,7 @@ void CPDF_Creator::InitID(bool bDefault) {
m_pIDArray->AddNew<CPDF_String>(bsBuffer, true);
return;
}
+
m_pIDArray->Add(m_pIDArray->GetObjectAt(0)->Clone());
if (m_pEncryptDict && !pOldIDArray && m_pParser && bNewId) {
if (m_pEncryptDict->GetStringFor("Filter") == "Standard") {
@@ -1862,25 +1800,26 @@ void CPDF_Creator::InitID(bool bDefault) {
}
}
}
-int32_t CPDF_Creator::Continue(IFX_Pause* pPause) {
- if (m_iStage < 0) {
+
+int32_t CPDF_Creator::Continue() {
+ if (m_iStage < 0)
return m_iStage;
- }
+
int32_t iRet = 0;
while (m_iStage < 100) {
- if (m_iStage < 20) {
- iRet = WriteDoc_Stage1(pPause);
- } else if (m_iStage < 30) {
- iRet = WriteDoc_Stage2(pPause);
- } else if (m_iStage < 90) {
- iRet = WriteDoc_Stage3(pPause);
- } else {
- iRet = WriteDoc_Stage4(pPause);
- }
- if (iRet < m_iStage) {
+ if (m_iStage < 20)
+ iRet = WriteDoc_Stage1();
+ else if (m_iStage < 30)
+ iRet = WriteDoc_Stage2();
+ else if (m_iStage < 90)
+ iRet = WriteDoc_Stage3();
+ else
+ iRet = WriteDoc_Stage4();
+
+ if (iRet < m_iStage)
break;
- }
}
+
if (iRet < 1 || m_iStage == 100) {
m_iStage = -1;
Clear();
@@ -1888,10 +1827,11 @@ int32_t CPDF_Creator::Continue(IFX_Pause* pPause) {
}
return m_iStage;
}
+
bool CPDF_Creator::SetFileVersion(int32_t fileVersion) {
- if (fileVersion < 10 || fileVersion > 17) {
+ if (fileVersion < 10 || fileVersion > 17)
return false;
- }
+
m_FileVersion = fileVersion;
return true;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-31 00:30:23 +0000