diff options
Diffstat (limited to 'core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp')
| -rw-r--r-- | core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp | 251 |
1 files changed, 14 insertions, 237 deletions
diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp index 33a566c87b..9e9b55177b 100644 --- a/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp +++ b/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp @@ -14,239 +14,19 @@ #include "core/include/fxcrt/fx_ext.h" #include "core/include/fxcrt/fx_safe_types.h" -namespace { - -const char kPathOperatorSubpath = 'm'; -const char kPathOperatorLine = 'l'; -const char kPathOperatorCubicBezier1 = 'c'; -const char kPathOperatorCubicBezier2 = 'v'; -const char kPathOperatorCubicBezier3 = 'y'; -const char kPathOperatorClosePath = 'h'; -const char kPathOperatorRectangle[] = "re"; - -} // namespace - -class CPDF_StreamParserAutoClearer { - public: - CPDF_StreamParserAutoClearer(CPDF_StreamParser** scoped_variable, - CPDF_StreamParser* new_parser) - : scoped_variable_(scoped_variable) { - *scoped_variable_ = new_parser; - } - ~CPDF_StreamParserAutoClearer() { *scoped_variable_ = NULL; } - - private: - CPDF_StreamParser** scoped_variable_; -}; -FX_DWORD CPDF_StreamContentParser::Parse(const uint8_t* pData, - FX_DWORD dwSize, - FX_DWORD max_cost) { - if (m_Level > _FPDF_MAX_FORM_LEVEL_) { - return dwSize; - } - FX_DWORD InitObjCount = m_pObjectList->CountObjects(); - CPDF_StreamParser syntax(pData, dwSize); - CPDF_StreamParserAutoClearer auto_clearer(&m_pSyntax, &syntax); - m_CompatCount = 0; - while (1) { - FX_DWORD cost = m_pObjectList->CountObjects() - InitObjCount; - if (max_cost && cost >= max_cost) { - break; - } - switch (syntax.ParseNextElement()) { - case CPDF_StreamParser::EndOfData: - return m_pSyntax->GetPos(); - case CPDF_StreamParser::Keyword: - OnOperator((char*)syntax.GetWordBuf()); - ClearAllParams(); - break; - case CPDF_StreamParser::Number: - AddNumberParam((char*)syntax.GetWordBuf(), syntax.GetWordSize()); - break; - case CPDF_StreamParser::Name: - AddNameParam((const FX_CHAR*)syntax.GetWordBuf() + 1, - syntax.GetWordSize() - 1); - break; - default: - AddObjectParam(syntax.GetObject()); - } - } - return m_pSyntax->GetPos(); -} - -void CPDF_StreamContentParser::Handle_BeginImage() { - FX_FILESIZE savePos = m_pSyntax->GetPos(); - CPDF_Dictionary* pDict = new CPDF_Dictionary; - while (1) { - CPDF_StreamParser::SyntaxType type = m_pSyntax->ParseNextElement(); - if (type == CPDF_StreamParser::Keyword) { - CFX_ByteString bsKeyword(m_pSyntax->GetWordBuf(), - m_pSyntax->GetWordSize()); - if (bsKeyword != "ID") { - m_pSyntax->SetPos(savePos); - pDict->Release(); - return; - } - } - if (type != CPDF_StreamParser::Name) { - break; - } - CFX_ByteString key((const FX_CHAR*)m_pSyntax->GetWordBuf() + 1, - m_pSyntax->GetWordSize() - 1); - std::unique_ptr<CPDF_Object, ReleaseDeleter<CPDF_Object>> pObj( - m_pSyntax->ReadNextObject()); - if (!key.IsEmpty()) { - FX_DWORD dwObjNum = pObj ? pObj->GetObjNum() : 0; - if (dwObjNum) - pDict->SetAtReference(key, m_pDocument, dwObjNum); - else - pDict->SetAt(key, pObj.release()); - } - } - PDF_ReplaceAbbr(pDict); - CPDF_Object* pCSObj = NULL; - if (pDict->KeyExist("ColorSpace")) { - pCSObj = pDict->GetElementValue("ColorSpace"); - if (pCSObj->IsName()) { - CFX_ByteString name = pCSObj->GetString(); - if (name != "DeviceRGB" && name != "DeviceGray" && name != "DeviceCMYK") { - pCSObj = FindResourceObj("ColorSpace", name); - if (pCSObj && !pCSObj->GetObjNum()) { - pCSObj = pCSObj->Clone(); - pDict->SetAt("ColorSpace", pCSObj); - } - } - } - } - CPDF_Stream* pStream = m_pSyntax->ReadInlineStream( - m_pDocument, pDict, pCSObj, m_Options.m_bDecodeInlineImage); - while (1) { - CPDF_StreamParser::SyntaxType type = m_pSyntax->ParseNextElement(); - if (type == CPDF_StreamParser::EndOfData) { - break; - } - if (type != CPDF_StreamParser::Keyword) { - continue; - } - if (m_pSyntax->GetWordSize() == 2 && m_pSyntax->GetWordBuf()[0] == 'E' && - m_pSyntax->GetWordBuf()[1] == 'I') { - break; - } - } - if (m_Options.m_bTextOnly) { - if (pStream) { - pStream->Release(); - } else { - pDict->Release(); - } - return; - } - pDict->SetAtName("Subtype", "Image"); - CPDF_ImageObject* pImgObj = AddImage(pStream, NULL, TRUE); - if (!pImgObj) { - if (pStream) { - pStream->Release(); - } else { - pDict->Release(); - } - } -} -void CPDF_StreamContentParser::ParsePathObject() { - FX_FLOAT params[6] = {}; - int nParams = 0; - int last_pos = m_pSyntax->GetPos(); - while (1) { - CPDF_StreamParser::SyntaxType type = m_pSyntax->ParseNextElement(); - FX_BOOL bProcessed = TRUE; - switch (type) { - case CPDF_StreamParser::EndOfData: - return; - case CPDF_StreamParser::Keyword: { - int len = m_pSyntax->GetWordSize(); - if (len == 1) { - switch (m_pSyntax->GetWordBuf()[0]) { - case kPathOperatorSubpath: - AddPathPoint(params[0], params[1], FXPT_MOVETO); - nParams = 0; - break; - case kPathOperatorLine: - AddPathPoint(params[0], params[1], FXPT_LINETO); - nParams = 0; - break; - case kPathOperatorCubicBezier1: - AddPathPoint(params[0], params[1], FXPT_BEZIERTO); - AddPathPoint(params[2], params[3], FXPT_BEZIERTO); - AddPathPoint(params[4], params[5], FXPT_BEZIERTO); - nParams = 0; - break; - case kPathOperatorCubicBezier2: - AddPathPoint(m_PathCurrentX, m_PathCurrentY, FXPT_BEZIERTO); - AddPathPoint(params[0], params[1], FXPT_BEZIERTO); - AddPathPoint(params[2], params[3], FXPT_BEZIERTO); - nParams = 0; - break; - case kPathOperatorCubicBezier3: - AddPathPoint(params[0], params[1], FXPT_BEZIERTO); - AddPathPoint(params[2], params[3], FXPT_BEZIERTO); - AddPathPoint(params[2], params[3], FXPT_BEZIERTO); - nParams = 0; - break; - case kPathOperatorClosePath: - Handle_ClosePath(); - nParams = 0; - break; - default: - bProcessed = FALSE; - break; - } - } else if (len == 2) { - if (m_pSyntax->GetWordBuf()[0] == kPathOperatorRectangle[0] && - m_pSyntax->GetWordBuf()[1] == kPathOperatorRectangle[1]) { - AddPathRect(params[0], params[1], params[2], params[3]); - nParams = 0; - } else { - bProcessed = FALSE; - } - } else { - bProcessed = FALSE; - } - if (bProcessed) { - last_pos = m_pSyntax->GetPos(); - } - break; - } - case CPDF_StreamParser::Number: { - if (nParams == 6) { - break; - } - FX_BOOL bInteger; - int value; - FX_atonum( - CFX_ByteStringC(m_pSyntax->GetWordBuf(), m_pSyntax->GetWordSize()), - bInteger, &value); - params[nParams++] = bInteger ? (FX_FLOAT)value : *(FX_FLOAT*)&value; - break; - } - default: - bProcessed = FALSE; - } - if (!bProcessed) { - m_pSyntax->SetPos(last_pos); - return; - } - } -} CPDF_StreamParser::CPDF_StreamParser(const uint8_t* pData, FX_DWORD dwSize) { m_pBuf = pData; m_Size = dwSize; m_Pos = 0; m_pLastObj = NULL; } + CPDF_StreamParser::~CPDF_StreamParser() { if (m_pLastObj) { m_pLastObj->Release(); } } + FX_DWORD _DecodeAllScanlines(ICodec_ScanlineDecoder* pDecoder, uint8_t*& dest_buf, FX_DWORD& dest_size) { @@ -275,6 +55,7 @@ FX_DWORD _DecodeAllScanlines(ICodec_ScanlineDecoder* pDecoder, delete pDecoder; return srcoff; } + ICodec_ScanlineDecoder* FPDFAPI_CreateFaxDecoder( const uint8_t* src_buf, FX_DWORD src_size, @@ -323,6 +104,7 @@ FX_DWORD PDF_DecodeInlineStream(const uint8_t* src_buf, dest_buf = 0; return (FX_DWORD)-1; } + CPDF_Stream* CPDF_StreamParser::ReadInlineStream(CPDF_Document* pDoc, CPDF_Dictionary* pDict, CPDF_Object* pCSObj, @@ -574,27 +356,16 @@ void CPDF_StreamParser::SkipPathObject() { ch = m_pBuf[m_Pos++]; } - if (m_Pos - op_startpos == 2) { - int op = m_pBuf[op_startpos]; - if (op == kPathOperatorSubpath || op == kPathOperatorLine || - op == kPathOperatorCubicBezier1 || - op == kPathOperatorCubicBezier2 || - op == kPathOperatorCubicBezier3) { - command_startpos = m_Pos; - break; - } - } else if (m_Pos - op_startpos == 3) { - if (m_pBuf[op_startpos] == kPathOperatorRectangle[0] && - m_pBuf[op_startpos + 1] == kPathOperatorRectangle[1]) { - command_startpos = m_Pos; - break; - } + if (IsPathOperator(&m_pBuf[op_startpos], m_Pos - 1 - op_startpos)) { + command_startpos = m_Pos; + break; } m_Pos = command_startpos; return; } } } + CPDF_Object* CPDF_StreamParser::ReadNextObject(FX_BOOL bAllowNestedArray, FX_BOOL bInArray) { FX_BOOL bIsNumber; @@ -678,6 +449,7 @@ CPDF_Object* CPDF_StreamParser::ReadNextObject(FX_BOOL bAllowNestedArray, } return NULL; } + void CPDF_StreamParser::GetNextWord(FX_BOOL& bIsNumber) { m_WordSize = 0; bIsNumber = TRUE; @@ -852,6 +624,7 @@ CFX_ByteString CPDF_StreamParser::ReadString() { } return buf.GetByteString(); } + CFX_ByteString CPDF_StreamParser::ReadHexString() { if (!PositionIsInBounds()) return CFX_ByteString(); @@ -899,10 +672,12 @@ CPDF_ContentParser::CPDF_ContentParser() m_pData(nullptr), m_Size(0), m_CurrentOffset(0) {} + CPDF_ContentParser::~CPDF_ContentParser() { if (!m_pSingleStream) FX_Free(m_pData); } + void CPDF_ContentParser::Start(CPDF_Page* pPage, CPDF_ParseOptions* pOptions) { if (m_Status != Ready || !pPage || !pPage->m_pDocument || !pPage->m_pFormDict) { @@ -937,6 +712,7 @@ void CPDF_ContentParser::Start(CPDF_Page* pPage, CPDF_ParseOptions* pOptions) { m_Status = Done; } } + void CPDF_ContentParser::Start(CPDF_Form* pForm, CPDF_AllStates* pGraphicStates, CFX_Matrix* pParentMatrix, @@ -995,6 +771,7 @@ void CPDF_ContentParser::Start(CPDF_Form* pForm, m_InternalStage = STAGE_PARSE; m_CurrentOffset = 0; } + void CPDF_ContentParser::Continue(IFX_Pause* pPause) { int steps = 0; while (m_Status == ToBeContinued) { |