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

Issue 1549103002: Make more CPDF_Parser method const. (Closed) Base URL: https://pdfium.googlesource.com/pdfium@master
Patch Set: remove unused CheckDirectType() 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 026247c3aa606d41be252e678274626b60c7fda2..51c779fb86e78dfbfa4d3b270d2c4ed0a8db769e 100644
--- a/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
+++ b/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
@@ -61,13 +61,6 @@ int32_t GetDirectInteger(CPDF_Dictionary* pDict, const CFX_ByteStringC& key) {
return pObj ? pObj->GetInteger() : 0;
}
-bool CheckDirectType(CPDF_Dictionary* pDict,
- const CFX_ByteStringC& key,
- int32_t iType) {
- CPDF_Object* pObj = pDict->GetElement(key);
- return !pObj || pObj->GetType() == iType;
-}
-
FX_DWORD GetVarInt(const uint8_t* p, int32_t n) {
FX_DWORD result = 0;
for (int32_t i = 0; i < n; ++i)
@@ -136,6 +129,12 @@ bool CPDF_Parser::IsValidObjectNumber(FX_DWORD objnum) const {
void CPDF_Parser::SetEncryptDictionary(CPDF_Dictionary* pDict) {
m_pEncryptDict = pDict;
}
+
+FX_FILESIZE CPDF_Parser::GetObjectPositionOrZero(FX_DWORD objnum) const {
+ auto it = m_ObjectInfo.find(objnum);
+ return it != m_ObjectInfo.end() ? it->second.pos : 0;
+}
+
void CPDF_Parser::CloseParser(FX_BOOL bReParse) {
m_bVersionUpdated = FALSE;
if (!bReParse) {
@@ -343,16 +342,17 @@ void CPDF_Parser::ReleaseEncryptHandler() {
m_pSecurityHandler.reset();
}
}
-FX_FILESIZE CPDF_Parser::GetObjectOffset(FX_DWORD objnum) {
+
+FX_FILESIZE CPDF_Parser::GetObjectOffset(FX_DWORD objnum) const {
if (!IsValidObjectNumber(objnum))
return 0;
if (m_V5Type[objnum] == 1)
- return m_ObjectInfo[objnum].pos;
+ return GetObjectPositionOrZero(objnum);
if (m_V5Type[objnum] == 2) {
- FX_FILESIZE pos = m_ObjectInfo[objnum].pos;
- return m_ObjectInfo[pos].pos;
+ FX_FILESIZE pos = GetObjectPositionOrZero(objnum);
+ return GetObjectPositionOrZero(pos);
}
return 0;
}
@@ -1238,32 +1238,33 @@ CPDF_StreamAcc* CPDF_Parser::GetObjectStream(FX_DWORD objnum) {
m_ObjectStreamMap.SetAt((void*)(uintptr_t)objnum, pStreamAcc);
return pStreamAcc;
}
-FX_FILESIZE CPDF_Parser::GetObjectSize(FX_DWORD objnum) {
+
+FX_FILESIZE CPDF_Parser::GetObjectSize(FX_DWORD objnum) const {
if (!IsValidObjectNumber(objnum))
return 0;
- if (m_V5Type[objnum] == 2) {
- objnum = m_ObjectInfo[objnum].pos;
- }
+ if (m_V5Type[objnum] == 2)
+ objnum = GetObjectPositionOrZero(objnum);
+
if (m_V5Type[objnum] == 1 || m_V5Type[objnum] == 255) {
- FX_FILESIZE offset = m_ObjectInfo[objnum].pos;
- if (offset == 0) {
+ FX_FILESIZE offset = GetObjectPositionOrZero(objnum);
+ if (offset == 0)
return 0;
- }
- void* pResult = FXSYS_bsearch(&offset, m_SortedOffset.GetData(),
- m_SortedOffset.GetSize(), sizeof(FX_FILESIZE),
- CompareFileSize);
- if (!pResult) {
+
+ FX_FILESIZE* pResult = static_cast<FX_FILESIZE*>(FXSYS_bsearch(
+ &offset, m_SortedOffset.GetData(), m_SortedOffset.GetSize(),
+ sizeof(FX_FILESIZE), CompareFileSize));
+ if (!pResult)
return 0;
- }
- if ((FX_FILESIZE*)pResult - (FX_FILESIZE*)m_SortedOffset.GetData() ==
- m_SortedOffset.GetSize() - 1) {
+
+ if (pResult - m_SortedOffset.GetData() == m_SortedOffset.GetSize() - 1)
return 0;
- }
- return ((FX_FILESIZE*)pResult)[1] - offset;
+
+ return pResult[1] - offset;
}
return 0;
}
+
void CPDF_Parser::GetIndirectBinary(FX_DWORD objnum,
uint8_t*& pBuffer,
FX_DWORD& size) {
@@ -1699,6 +1700,7 @@ CPDF_SyntaxParser::CPDF_SyntaxParser() {
m_dwWordPos = 0;
m_bFileStream = FALSE;
}
+
CPDF_SyntaxParser::~CPDF_SyntaxParser() {
FX_Free(m_pFileBuf);
}
@@ -1773,7 +1775,7 @@ FX_BOOL CPDF_SyntaxParser::ReadBlock(uint8_t* pBuf, FX_DWORD size) {
m_Pos += size;
return TRUE;
}
-#define MAX_WORD_BUFFER 256
+
void CPDF_SyntaxParser::GetNextWord() {
m_WordSize = 0;
m_bIsNumber = TRUE;
@@ -1810,7 +1812,7 @@ void CPDF_SyntaxParser::GetNextWord() {
return;
}
- if (m_WordSize < MAX_WORD_BUFFER)
+ if (m_WordSize < sizeof(m_WordBuffer) - 1)
m_WordBuffer[m_WordSize++] = ch;
}
} else if (ch == '<') {
@@ -1832,7 +1834,7 @@ void CPDF_SyntaxParser::GetNextWord() {
}
while (1) {
- if (m_WordSize < MAX_WORD_BUFFER)
+ if (m_WordSize < sizeof(m_WordBuffer) - 1)
m_WordBuffer[m_WordSize++] = ch;
if (!PDFCharIsNumeric(ch))
@@ -2006,11 +2008,11 @@ void CPDF_SyntaxParser::ToNextWord() {
CFX_ByteString CPDF_SyntaxParser::GetNextWord(FX_BOOL& bIsNumber) {
GetNextWord();
bIsNumber = m_bIsNumber;
- return CFX_ByteString((const FX_CHAR*)m_WordBuffer, m_WordSize);
+ return CFX_ByteString(m_WordBuffer, m_WordSize);
}
CFX_ByteString CPDF_SyntaxParser::GetKeyword() {
- GetNextWord();
- return CFX_ByteString((const FX_CHAR*)m_WordBuffer, m_WordSize);
+ FX_BOOL dummy;
+ return GetNextWord(dummy);
}
CPDF_Object* CPDF_SyntaxParser::GetObject(CPDF_IndirectObjects* pObjList,
FX_DWORD objnum,
@@ -2488,7 +2490,7 @@ int32_t CPDF_SyntaxParser::GetDirectNum() {
return 0;
}
m_WordBuffer[m_WordSize] = 0;
- return FXSYS_atoi((const FX_CHAR*)m_WordBuffer);
+ return FXSYS_atoi(reinterpret_cast<const FX_CHAR*>(m_WordBuffer));
}
bool CPDF_SyntaxParser::IsWholeWord(FX_FILESIZE startpos,
@@ -2819,10 +2821,6 @@ class CPDF_DataAvail final : public IPDF_DataAvail {
CFX_ByteString m_WordBuf;
- uint8_t m_WordBuffer[257];
-
- FX_DWORD m_WordSize;
-
uint8_t m_bufferData[512];
CFX_FileSizeArray m_CrossOffset;
@@ -2915,7 +2913,6 @@ CPDF_DataAvail::CPDF_DataAvail(IFX_FileAvail* pFileAvail,
m_dwFileLen = (FX_DWORD)m_pFileRead->GetSize();
}
m_dwCurrentOffset = 0;
- m_WordSize = 0;
m_dwXRefOffset = 0;
m_bufferOffset = 0;
m_dwFirstPageNo = 0;
@@ -3781,9 +3778,8 @@ int32_t CPDF_DataAvail::CheckCrossRefStream(IFX_DownloadHints* pHints,
inline void CPDF_DataAvail::SetStartOffset(FX_FILESIZE dwOffset) {
m_Pos = dwOffset;
}
-#define MAX_WORD_BUFFER 256
+
FX_BOOL CPDF_DataAvail::GetNextToken(CFX_ByteString& token) {
- m_WordSize = 0;
uint8_t ch;
if (!GetNextChar(ch))
return FALSE;
@@ -3805,8 +3801,10 @@ FX_BOOL CPDF_DataAvail::GetNextToken(CFX_ByteString& token) {
}
}
+ uint8_t buffer[256];
+ FX_DWORD index = 0;
if (PDFCharIsDelimiter(ch)) {
- m_WordBuffer[m_WordSize++] = ch;
+ buffer[index++] = ch;
if (ch == '/') {
while (1) {
if (!GetNextChar(ch))
@@ -3814,20 +3812,20 @@ FX_BOOL CPDF_DataAvail::GetNextToken(CFX_ByteString& token) {
if (!PDFCharIsOther(ch) && !PDFCharIsNumeric(ch)) {
m_Pos--;
- CFX_ByteString ret(m_WordBuffer, m_WordSize);
+ CFX_ByteString ret(buffer, index);
token = ret;
return TRUE;
}
- if (m_WordSize < MAX_WORD_BUFFER)
- m_WordBuffer[m_WordSize++] = ch;
+ if (index < sizeof(buffer))
+ buffer[index++] = ch;
}
} else if (ch == '<') {
if (!GetNextChar(ch))
return FALSE;
if (ch == '<')
- m_WordBuffer[m_WordSize++] = ch;
+ buffer[index++] = ch;
else
m_Pos--;
} else if (ch == '>') {
@@ -3835,19 +3833,19 @@ FX_BOOL CPDF_DataAvail::GetNextToken(CFX_ByteString& token) {
return FALSE;
if (ch == '>')
- m_WordBuffer[m_WordSize++] = ch;
+ buffer[index++] = ch;
else
m_Pos--;
}
- CFX_ByteString ret(m_WordBuffer, m_WordSize);
+ CFX_ByteString ret(buffer, index);
token = ret;
return TRUE;
}
while (1) {
- if (m_WordSize < MAX_WORD_BUFFER)
- m_WordBuffer[m_WordSize++] = ch;
+ if (index < sizeof(buffer))
+ buffer[index++] = ch;
if (!GetNextChar(ch))
return FALSE;
@@ -3858,10 +3856,10 @@ FX_BOOL CPDF_DataAvail::GetNextToken(CFX_ByteString& token) {
}
}
- CFX_ByteString ret(m_WordBuffer, m_WordSize);
- token = ret;
+ token = CFX_ByteString(buffer, index);
return TRUE;
}
+
FX_BOOL CPDF_DataAvail::GetNextChar(uint8_t& ch) {
FX_FILESIZE pos = m_Pos;
if (pos >= m_dwFileLen) {
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