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-rw-r--r--core/fpdfapi/edit/fpdf_edit_create.cpp240
1 files changed, 33 insertions, 207 deletions
diff --git a/core/fpdfapi/edit/fpdf_edit_create.cpp b/core/fpdfapi/edit/fpdf_edit_create.cpp
index 63c0930c11..5b4c3ad4d0 100644
--- a/core/fpdfapi/edit/fpdf_edit_create.cpp
+++ b/core/fpdfapi/edit/fpdf_edit_create.cpp
@@ -34,155 +34,6 @@ namespace {
const uint32_t kXRefStreamMaxSize = 10000;
const int kObjectStreamMaxLength = 256 * 1024;
-int32_t AppendObject(const CPDF_Object* pObj,
- CFX_FileBufferArchive* pFile,
- FX_FILESIZE& offset) {
- int32_t len = 0;
- if (!pObj) {
- if (pFile->AppendString(" null") < 0)
- return -1;
-
- offset += 5;
- return 1;
- }
- switch (pObj->GetType()) {
- case CPDF_Object::NULLOBJ:
- if (pFile->AppendString(" null") < 0)
- return -1;
-
- offset += 5;
- break;
- case CPDF_Object::BOOLEAN:
- case CPDF_Object::NUMBER:
- if (pFile->AppendString(" ") < 0)
- return -1;
- if ((len = pFile->AppendString(pObj->GetString().AsStringC())) < 0)
- return -1;
-
- offset += len + 1;
- break;
- case CPDF_Object::STRING: {
- CFX_ByteString str = pObj->GetString();
- bool bHex = pObj->AsString()->IsHex();
- if ((len = pFile->AppendString(PDF_EncodeString(str, bHex).AsStringC())) <
- 0) {
- return -1;
- }
- offset += len;
- break;
- }
- case CPDF_Object::NAME: {
- if (pFile->AppendString("/") < 0)
- return -1;
-
- CFX_ByteString str = pObj->GetString();
- if ((len = pFile->AppendString(PDF_NameEncode(str).AsStringC())) < 0)
- return -1;
-
- offset += len + 1;
- break;
- }
- case CPDF_Object::REFERENCE: {
- if (pFile->AppendString(" ") < 0)
- return -1;
- if ((len = pFile->AppendDWord(pObj->AsReference()->GetRefObjNum())) < 0)
- return -1;
- if (pFile->AppendString(" 0 R ") < 0)
- return -1;
-
- offset += len + 6;
- break;
- }
- case CPDF_Object::ARRAY: {
- 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)
- return -1;
- if ((len = pFile->AppendDWord(pElement->GetObjNum())) < 0)
- return -1;
- if (pFile->AppendString(" 0 R") < 0)
- return -1;
-
- offset += len + 5;
- } else {
- if (AppendObject(pElement, pFile, offset) < 0)
- return -1;
- }
- }
- if (pFile->AppendString("]") < 0)
- return -1;
-
- offset += 1;
- break;
- }
- case CPDF_Object::DICTIONARY: {
- 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)
- return -1;
- if ((len = pFile->AppendString(PDF_NameEncode(key).AsStringC())) < 0)
- return -1;
-
- offset += len + 1;
- if (!pValue->IsInline()) {
- if (pFile->AppendString(" ") < 0)
- return -1;
- if ((len = pFile->AppendDWord(pValue->GetObjNum())) < 0)
- return -1;
- if (pFile->AppendString(" 0 R") < 0)
- return -1;
-
- offset += len + 5;
- } else {
- if (AppendObject(pValue, pFile, offset) < 0)
- return -1;
- }
- }
- if (pFile->AppendString(">>") < 0)
- return -1;
-
- offset += 2;
- break;
- }
- case CPDF_Object::STREAM: {
- const CPDF_Stream* p = pObj->AsStream();
- if (AppendObject(p->GetDict(), pFile, offset) < 0)
- return -1;
- 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)
- return -1;
-
- offset += pAcc->GetSize();
- if ((len = pFile->AppendString("\r\nendstream")) < 0)
- return -1;
-
- offset += len;
- break;
- }
- default:
- ASSERT(false);
- break;
- }
- return 1;
-}
-
int32_t WriteTrailer(CPDF_Document* pDocument,
CFX_FileBufferArchive* pFile,
CPDF_Array* pIDArray) {
@@ -217,7 +68,7 @@ int32_t WriteTrailer(CPDF_Document* pDocument,
offset += len + 6;
} else {
- if (AppendObject(pValue, pFile, offset) < 0)
+ if (!pValue->WriteTo(pFile, &offset))
return -1;
}
}
@@ -226,7 +77,7 @@ int32_t WriteTrailer(CPDF_Document* pDocument,
return -1;
offset += 3;
- if (AppendObject(pIDArray, pFile, offset) < 0)
+ if (!pIDArray->WriteTo(pFile, &offset))
return -1;
}
return offset;
@@ -254,7 +105,7 @@ int32_t WriteTrailer(CPDF_Document* pDocument,
return -1;
offset += 3;
- if (AppendObject(pIDArray, pFile, offset) < 0)
+ if (!pIDArray->WriteTo(pFile, &offset))
return -1;
}
return offset;
@@ -992,40 +843,22 @@ int32_t CPDF_Creator::WriteIndirectObj(const CPDF_Object* 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)
- return -1;
-
- m_Offset += 5;
- return 1;
- }
-
switch (pObj->GetType()) {
- case CPDF_Object::NULLOBJ:
- if (m_File.AppendString(" null") < 0)
- return -1;
-
- m_Offset += 5;
- break;
case CPDF_Object::BOOLEAN:
+ case CPDF_Object::NAME:
+ case CPDF_Object::NULLOBJ:
case CPDF_Object::NUMBER:
- if (m_File.AppendString(" ") < 0)
- return -1;
- if ((len = m_File.AppendString(pObj->GetString().AsStringC())) < 0)
+ case CPDF_Object::REFERENCE:
+ if (!pObj->WriteTo(&m_File, &m_Offset))
return -1;
-
- m_Offset += len + 1;
break;
+
case CPDF_Object::STRING: {
CFX_ByteString str = pObj->GetString();
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 (!pObj->WriteTo(&m_File, &m_Offset))
return -1;
-
- m_Offset += len;
break;
}
CPDF_Encryptor encryptor(m_pCryptoHandler.Get(), objnum,
@@ -1033,7 +866,8 @@ 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)
+ int32_t len = m_File.AppendString(content.AsStringC());
+ if (len < 0)
return -1;
m_Offset += len;
@@ -1052,7 +886,9 @@ 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)
+
+ int32_t len = m_File.AppendString("stream\r\n");
+ if (len < 0)
return -1;
m_Offset += len;
@@ -1060,33 +896,13 @@ int32_t CPDF_Creator::WriteDirectObj(uint32_t objnum,
return -1;
m_Offset += encryptor.m_dwSize;
- if ((len = m_File.AppendString("\r\nendstream")) < 0)
+ len = m_File.AppendString("\r\nendstream");
+ if (len < 0)
return -1;
m_Offset += len;
break;
}
- case CPDF_Object::NAME: {
- if (m_File.AppendString("/") < 0)
- return -1;
-
- CFX_ByteString str = pObj->GetString();
- if ((len = m_File.AppendString(PDF_NameEncode(str).AsStringC())) < 0)
- return -1;
-
- m_Offset += len + 1;
- break;
- }
- case CPDF_Object::REFERENCE: {
- if (m_File.AppendString(" ") < 0)
- return -1;
- if ((len = m_File.AppendDWord(pObj->AsReference()->GetRefObjNum())) < 0)
- return -1;
- if (m_File.AppendString(" 0 R") < 0)
- return -1;
- m_Offset += len + 5;
- break;
- }
case CPDF_Object::ARRAY: {
if (m_File.AppendString("[") < 0)
return -1;
@@ -1098,7 +914,9 @@ int32_t CPDF_Creator::WriteDirectObj(uint32_t objnum,
if (!pElement->IsInline()) {
if (m_File.AppendString(" ") < 0)
return -1;
- if ((len = m_File.AppendDWord(pElement->GetObjNum())) < 0)
+
+ int32_t len = m_File.AppendDWord(pElement->GetObjNum());
+ if (len < 0)
return -1;
if (m_File.AppendString(" 0 R") < 0)
return -1;
@@ -1116,8 +934,12 @@ int32_t CPDF_Creator::WriteDirectObj(uint32_t objnum,
break;
}
case CPDF_Object::DICTIONARY: {
- if (!m_pCryptoHandler || pObj == m_pEncryptDict)
- return AppendObject(pObj, &m_File, m_Offset);
+ if (!m_pCryptoHandler || pObj == m_pEncryptDict) {
+ if (!pObj->WriteTo(&m_File, &m_Offset))
+ return -1;
+ break;
+ }
+
if (m_File.AppendString("<<") < 0)
return -1;
@@ -1130,7 +952,9 @@ int32_t CPDF_Creator::WriteDirectObj(uint32_t objnum,
CPDF_Object* pValue = it.second.get();
if (m_File.AppendString("/") < 0)
return -1;
- if ((len = m_File.AppendString(PDF_NameEncode(key).AsStringC())) < 0)
+
+ int32_t len = m_File.AppendString(PDF_NameEncode(key).AsStringC());
+ if (len < 0)
return -1;
m_Offset += len + 1;
@@ -1140,7 +964,9 @@ int32_t CPDF_Creator::WriteDirectObj(uint32_t objnum,
if (!pValue->IsInline()) {
if (m_File.AppendString(" ") < 0)
return -1;
- if ((len = m_File.AppendDWord(pValue->GetObjNum())) < 0)
+
+ len = m_File.AppendDWord(pValue->GetObjNum());
+ if (len < 0)
return -1;
if (m_File.AppendString(" 0 R ") < 0)
return -1;
@@ -1574,7 +1400,7 @@ int32_t CPDF_Creator::WriteDoc_Stage4() {
return -1;
} else {
FX_FILESIZE offset = 0;
- if (AppendObject(pValue, &m_File, offset) < 0)
+ if (!pValue->WriteTo(&m_File, &offset))
return -1;
}
}
@@ -1631,7 +1457,7 @@ int32_t CPDF_Creator::WriteDoc_Stage4() {
return -1;
FX_FILESIZE offset = 0;
- if (AppendObject(m_pIDArray.get(), &m_File, offset) < 0)
+ if (!m_pIDArray->WriteTo(&m_File, &offset))
return -1;
}
if (!bXRefStream) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-18 22:44:14 +0000