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Unified Diff: core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp

Issue 1650793002: Remove the m_V5Type member variable from CPDF_Parser. (Closed) Base URL: https://pdfium.googlesource.com/pdfium@master
Patch Set: rebase Created 4 years, 11 months ago
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Index: core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
diff --git a/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp b/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
index 653ce2888ee6e1362570fab2ec0d1433f7a8733a..5cc117798cb177b5915a483a677bfcbdead9b0bb 100644
--- a/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
+++ b/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
@@ -125,7 +125,9 @@ FX_FILESIZE CPDF_Parser::GetObjectPositionOrZero(FX_DWORD objnum) const {
}
uint8_t CPDF_Parser::GetObjectType(FX_DWORD objnum) const {
- return m_V5Type[objnum];
+ ASSERT(IsValidObjectNumber(objnum));
+ auto it = m_ObjectInfo.find(objnum);
+ return it != m_ObjectInfo.end() ? it->second.type : 0;
}
uint16_t CPDF_Parser::GetObjectGenNum(FX_DWORD objnum) const {
@@ -177,7 +179,6 @@ void CPDF_Parser::CloseParser() {
m_SortedOffset.RemoveAll();
m_ObjectInfo.clear();
- m_V5Type.RemoveAll();
m_ObjVersion.RemoveAll();
int32_t iLen = m_Trailers.GetSize();
for (int32_t i = 0; i < iLen; ++i) {
@@ -341,10 +342,10 @@ FX_FILESIZE CPDF_Parser::GetObjectOffset(FX_DWORD objnum) const {
if (!IsValidObjectNumber(objnum))
return 0;
- if (m_V5Type[objnum] == 1)
+ if (GetObjectType(objnum) == 1)
return GetObjectPositionOrZero(objnum);
- if (m_V5Type[objnum] == 2) {
+ if (GetObjectType(objnum) == 2) {
FX_FILESIZE pos = GetObjectPositionOrZero(objnum);
return GetObjectPositionOrZero(pos);
}
@@ -361,10 +362,8 @@ FX_BOOL CPDF_Parser::LoadAllCrossRefV4(FX_FILESIZE xrefpos) {
}
int32_t xrefsize = GetDirectInteger(m_pTrailer, "Size");
- if (xrefsize > 0 && xrefsize <= kMaxXRefSize) {
+ if (xrefsize > 0 && xrefsize <= kMaxXRefSize)
ShrinkObjectMap(xrefsize);
- m_V5Type.SetSize(xrefsize);
- }
CFX_FileSizeArray CrossRefList;
CFX_FileSizeArray XRefStreamList;
@@ -473,7 +472,7 @@ FX_BOOL CPDF_Parser::LoadLinearizedCrossRefV4(FX_FILESIZE pos,
char* pEntry = &buf[i * recordsize];
if (pEntry[17] == 'f') {
m_ObjectInfo[objnum].pos = 0;
- m_V5Type.SetAtGrow(objnum, 0);
+ m_ObjectInfo[objnum].type = 0;
} else {
int32_t offset = FXSYS_atoi(pEntry);
if (offset == 0) {
@@ -496,7 +495,7 @@ FX_BOOL CPDF_Parser::LoadLinearizedCrossRefV4(FX_FILESIZE pos,
m_SortedOffset.Add(m_ObjectInfo[objnum].pos);
}
}
- m_V5Type.SetAtGrow(objnum, 1);
+ m_ObjectInfo[objnum].type = 1;
}
}
}
@@ -555,7 +554,7 @@ bool CPDF_Parser::LoadCrossRefV4(FX_FILESIZE pos,
char* pEntry = &buf[i * recordsize];
if (pEntry[17] == 'f') {
m_ObjectInfo[objnum].pos = 0;
- m_V5Type.SetAtGrow(objnum, 0);
+ m_ObjectInfo[objnum].type = 0;
} else {
FX_FILESIZE offset = (FX_FILESIZE)FXSYS_atoi64(pEntry);
if (offset == 0) {
@@ -574,7 +573,7 @@ bool CPDF_Parser::LoadCrossRefV4(FX_FILESIZE pos,
!FindPosInOffsets(m_ObjectInfo[objnum].pos)) {
m_SortedOffset.Add(m_ObjectInfo[objnum].pos);
}
- m_V5Type.SetAtGrow(objnum, 1);
+ m_ObjectInfo[objnum].type = 1;
}
}
}
@@ -606,7 +605,6 @@ FX_BOOL CPDF_Parser::LoadAllCrossRefV5(FX_FILESIZE xrefpos) {
FX_BOOL CPDF_Parser::RebuildCrossRef() {
m_ObjectInfo.clear();
- m_V5Type.RemoveAll();
m_SortedOffset.RemoveAll();
m_ObjVersion.RemoveAll();
if (m_pTrailer) {
@@ -822,7 +820,7 @@ FX_BOOL CPDF_Parser::RebuildCrossRef() {
}
} else {
m_ObjectInfo[objnum].pos = obj_pos;
- m_V5Type.SetAtGrow(objnum, 1);
+ m_ObjectInfo[objnum].type = 1;
m_ObjVersion.SetAtGrow(objnum, (int16_t)gennum);
}
if (pObject) {
@@ -1016,9 +1014,8 @@ FX_BOOL CPDF_Parser::LoadCrossRefV5(FX_FILESIZE* pos, FX_BOOL bMainXRef) {
if (bMainXRef) {
m_pTrailer = ToDictionary(pStream->GetDict()->Clone());
ShrinkObjectMap(size);
- if (m_V5Type.SetSize(size)) {
- FXSYS_memset(m_V5Type.GetData(), 0, size);
- }
+ for (auto it : m_ObjectInfo)
+ it.second.type = 0;
} else {
m_Trailers.Add(ToDictionary(pStream->GetDict()->Clone()));
}
@@ -1081,8 +1078,7 @@ FX_BOOL CPDF_Parser::LoadCrossRefV5(FX_FILESIZE* pos, FX_BOOL bMainXRef) {
const uint8_t* segstart = pData + segindex * totalWidth;
FX_SAFE_DWORD dwMaxObjNum = startnum;
dwMaxObjNum += count;
- FX_DWORD dwV5Size =
- pdfium::base::checked_cast<FX_DWORD, int32_t>(m_V5Type.GetSize());
+ FX_DWORD dwV5Size = m_ObjectInfo.empty() ? 0 : GetLastObjNum() + 1;
if (!dwMaxObjNum.IsValid() || dwMaxObjNum.ValueOrDie() > dwV5Size) {
continue;
}
@@ -1092,7 +1088,7 @@ FX_BOOL CPDF_Parser::LoadCrossRefV5(FX_FILESIZE* pos, FX_BOOL bMainXRef) {
if (WidthArray[0]) {
type = GetVarInt(entrystart, WidthArray[0]);
}
- if (m_V5Type[startnum + j] == 255) {
+ if (GetObjectType(startnum + j) == 255) {
FX_FILESIZE offset =
GetVarInt(entrystart + WidthArray[0], WidthArray[1]);
m_ObjectInfo[startnum + j].pos = offset;
@@ -1104,10 +1100,10 @@ FX_BOOL CPDF_Parser::LoadCrossRefV5(FX_FILESIZE* pos, FX_BOOL bMainXRef) {
}
continue;
}
- if (m_V5Type[startnum + j]) {
+ if (GetObjectType(startnum + j)) {
continue;
}
- m_V5Type[startnum + j] = type;
+ m_ObjectInfo[startnum + j].type = type;
if (type == 0) {
m_ObjectInfo[startnum + j].pos = 0;
} else {
@@ -1122,11 +1118,11 @@ FX_BOOL CPDF_Parser::LoadCrossRefV5(FX_FILESIZE* pos, FX_BOOL bMainXRef) {
m_SortedOffset.Add(offset);
}
} else {
- if (offset < 0 || offset >= m_V5Type.GetSize()) {
+ if (offset < 0 || !IsValidObjectNumber(offset)) {
pStream->Release();
return FALSE;
}
- m_V5Type[offset] = 255;
+ m_ObjectInfo[offset].type = 255;
}
}
}
@@ -1160,9 +1156,9 @@ FX_BOOL CPDF_Parser::IsFormStream(FX_DWORD objnum, FX_BOOL& bForm) {
bForm = FALSE;
if (!IsValidObjectNumber(objnum))
return TRUE;
- if (m_V5Type[objnum] == 0)
+ if (GetObjectType(objnum) == 0)
return TRUE;
- if (m_V5Type[objnum] == 2)
+ if (GetObjectType(objnum) == 2)
return TRUE;
FX_FILESIZE pos = m_ObjectInfo[objnum].pos;
void* pResult =
@@ -1196,13 +1192,13 @@ CPDF_Object* CPDF_Parser::ParseIndirectObject(
return nullptr;
ScopedSetInsertion<FX_DWORD> local_insert(&m_ParsingObjNums, objnum);
- if (m_V5Type[objnum] == 1 || m_V5Type[objnum] == 255) {
+ if (GetObjectType(objnum) == 1 || GetObjectType(objnum) == 255) {
FX_FILESIZE pos = m_ObjectInfo[objnum].pos;
if (pos <= 0)
return nullptr;
return ParseIndirectObjectAt(pObjList, pos, objnum);
}
- if (m_V5Type[objnum] != 2)
+ if (GetObjectType(objnum) != 2)
return nullptr;
CPDF_StreamAcc* pObjStream = GetObjectStream(m_ObjectInfo[objnum].pos);
@@ -1254,10 +1250,10 @@ FX_FILESIZE CPDF_Parser::GetObjectSize(FX_DWORD objnum) const {
if (!IsValidObjectNumber(objnum))
return 0;
- if (m_V5Type[objnum] == 2)
+ if (GetObjectType(objnum) == 2)
objnum = GetObjectPositionOrZero(objnum);
- if (m_V5Type[objnum] == 1 || m_V5Type[objnum] == 255) {
+ if (GetObjectType(objnum) == 1 || GetObjectType(objnum) == 255) {
FX_FILESIZE offset = GetObjectPositionOrZero(objnum);
if (offset == 0)
return 0;
@@ -1284,7 +1280,7 @@ void CPDF_Parser::GetIndirectBinary(FX_DWORD objnum,
if (!IsValidObjectNumber(objnum))
return;
- if (m_V5Type[objnum] == 2) {
+ if (GetObjectType(objnum) == 2) {
CPDF_StreamAcc* pObjStream = GetObjectStream(m_ObjectInfo[objnum].pos);
if (!pObjStream)
return;
@@ -1316,7 +1312,7 @@ void CPDF_Parser::GetIndirectBinary(FX_DWORD objnum,
return;
}
- if (m_V5Type[objnum] != 1)
+ if (GetObjectType(objnum) != 1)
return;
FX_FILESIZE pos = m_ObjectInfo[objnum].pos;
@@ -1573,10 +1569,8 @@ CPDF_Parser::Error CPDF_Parser::StartAsyncParse(IFX_FileRead* pFileAccess) {
}
int32_t xrefsize = GetDirectInteger(m_pTrailer, "Size");
- if (xrefsize > 0) {
+ if (xrefsize > 0)
ShrinkObjectMap(xrefsize);
- m_V5Type.SetSize(xrefsize);
- }
}
Error eRet = SetEncryptHandler();
if (eRet != SUCCESS) {
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