From 41872fa5ac7448a50f66ad56d7bde8d1aa77db4b Mon Sep 17 00:00:00 2001 From: dsinclair Date: Tue, 4 Oct 2016 11:29:35 -0700 Subject: Move core/fpdfapi/fpdf_page to core/fpdfapi/page BUG=pdfium:603 Review-Url: https://codereview.chromium.org/2386423004 --- core/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp | 839 ------------------------ 1 file changed, 839 deletions(-) delete mode 100644 core/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp (limited to 'core/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp') diff --git a/core/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp b/core/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp deleted file mode 100644 index 3c3104b8ab..0000000000 --- a/core/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp +++ /dev/null @@ -1,839 +0,0 @@ -// Copyright 2014 PDFium Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. - -// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com - -#include "core/fpdfapi/fpdf_page/pageint.h" - -#include - -#include "core/fpdfapi/cpdf_modulemgr.h" -#include "core/fpdfapi/font/cpdf_type3char.h" -#include "core/fpdfapi/fpdf_page/cpdf_allstates.h" -#include "core/fpdfapi/fpdf_page/cpdf_form.h" -#include "core/fpdfapi/fpdf_page/cpdf_page.h" -#include "core/fpdfapi/fpdf_page/cpdf_pageobject.h" -#include "core/fpdfapi/fpdf_page/cpdf_path.h" -#include "core/fpdfapi/fpdf_parser/cpdf_array.h" -#include "core/fpdfapi/fpdf_parser/cpdf_boolean.h" -#include "core/fpdfapi/fpdf_parser/cpdf_dictionary.h" -#include "core/fpdfapi/fpdf_parser/cpdf_document.h" -#include "core/fpdfapi/fpdf_parser/cpdf_name.h" -#include "core/fpdfapi/fpdf_parser/cpdf_null.h" -#include "core/fpdfapi/fpdf_parser/cpdf_number.h" -#include "core/fpdfapi/fpdf_parser/cpdf_stream.h" -#include "core/fpdfapi/fpdf_parser/cpdf_stream_acc.h" -#include "core/fpdfapi/fpdf_parser/cpdf_string.h" -#include "core/fpdfapi/fpdf_parser/fpdf_parser_decode.h" -#include "core/fpdfapi/fpdf_parser/fpdf_parser_utility.h" -#include "core/fxcodec/fx_codec.h" -#include "core/fxcrt/fx_ext.h" -#include "core/fxcrt/fx_safe_types.h" -#include "core/fxge/cfx_fxgedevice.h" -#include "core/fxge/cfx_renderdevice.h" - -namespace { - -const uint32_t kMaxNestedArrayLevel = 512; -const uint32_t kMaxWordBuffer = 256; -const FX_STRSIZE kMaxStringLength = 32767; - -} // namespace - -CPDF_StreamParser::CPDF_StreamParser(const uint8_t* pData, uint32_t dwSize) - : m_pBuf(pData), - m_Size(dwSize), - m_Pos(0), - m_pLastObj(nullptr), - m_pPool(nullptr) {} - -CPDF_StreamParser::CPDF_StreamParser( - const uint8_t* pData, - uint32_t dwSize, - const CFX_WeakPtr& pPool) - : m_pBuf(pData), - m_Size(dwSize), - m_Pos(0), - m_pLastObj(nullptr), - m_pPool(pPool) {} - -CPDF_StreamParser::~CPDF_StreamParser() { - if (m_pLastObj) { - m_pLastObj->Release(); - } -} - -uint32_t DecodeAllScanlines(CCodec_ScanlineDecoder* pDecoder, - uint8_t*& dest_buf, - uint32_t& dest_size) { - if (!pDecoder) { - return FX_INVALID_OFFSET; - } - int ncomps = pDecoder->CountComps(); - int bpc = pDecoder->GetBPC(); - int width = pDecoder->GetWidth(); - int height = pDecoder->GetHeight(); - int pitch = (width * ncomps * bpc + 7) / 8; - if (height == 0 || pitch > (1 << 30) / height) { - delete pDecoder; - return FX_INVALID_OFFSET; - } - dest_buf = FX_Alloc2D(uint8_t, pitch, height); - dest_size = pitch * height; // Safe since checked alloc returned. - for (int row = 0; row < height; row++) { - const uint8_t* pLine = pDecoder->GetScanline(row); - if (!pLine) - break; - - FXSYS_memcpy(dest_buf + row * pitch, pLine, pitch); - } - uint32_t srcoff = pDecoder->GetSrcOffset(); - delete pDecoder; - return srcoff; -} - -CCodec_ScanlineDecoder* FPDFAPI_CreateFaxDecoder( - const uint8_t* src_buf, - uint32_t src_size, - int width, - int height, - const CPDF_Dictionary* pParams); - -uint32_t PDF_DecodeInlineStream(const uint8_t* src_buf, - uint32_t limit, - int width, - int height, - CFX_ByteString& decoder, - CPDF_Dictionary* pParam, - uint8_t*& dest_buf, - uint32_t& dest_size) { - if (decoder == "CCITTFaxDecode" || decoder == "CCF") { - CCodec_ScanlineDecoder* pDecoder = - FPDFAPI_CreateFaxDecoder(src_buf, limit, width, height, pParam); - return DecodeAllScanlines(pDecoder, dest_buf, dest_size); - } - if (decoder == "ASCII85Decode" || decoder == "A85") { - return A85Decode(src_buf, limit, dest_buf, dest_size); - } - if (decoder == "ASCIIHexDecode" || decoder == "AHx") { - return HexDecode(src_buf, limit, dest_buf, dest_size); - } - if (decoder == "FlateDecode" || decoder == "Fl") { - return FPDFAPI_FlateOrLZWDecode(FALSE, src_buf, limit, pParam, dest_size, - dest_buf, dest_size); - } - if (decoder == "LZWDecode" || decoder == "LZW") { - return FPDFAPI_FlateOrLZWDecode(TRUE, src_buf, limit, pParam, 0, dest_buf, - dest_size); - } - if (decoder == "DCTDecode" || decoder == "DCT") { - CCodec_ScanlineDecoder* pDecoder = - CPDF_ModuleMgr::Get()->GetJpegModule()->CreateDecoder( - src_buf, limit, width, height, 0, - pParam ? pParam->GetIntegerFor("ColorTransform", 1) : 1); - return DecodeAllScanlines(pDecoder, dest_buf, dest_size); - } - if (decoder == "RunLengthDecode" || decoder == "RL") { - return RunLengthDecode(src_buf, limit, dest_buf, dest_size); - } - dest_size = 0; - dest_buf = 0; - return (uint32_t)-1; -} - -CPDF_Stream* CPDF_StreamParser::ReadInlineStream(CPDF_Document* pDoc, - CPDF_Dictionary* pDict, - CPDF_Object* pCSObj) { - if (m_Pos == m_Size) - return nullptr; - - if (PDFCharIsWhitespace(m_pBuf[m_Pos])) - m_Pos++; - - CFX_ByteString Decoder; - CPDF_Dictionary* pParam = nullptr; - CPDF_Object* pFilter = pDict->GetDirectObjectFor("Filter"); - if (pFilter) { - if (CPDF_Array* pArray = pFilter->AsArray()) { - Decoder = pArray->GetStringAt(0); - CPDF_Array* pParams = pDict->GetArrayFor("DecodeParms"); - if (pParams) - pParam = pParams->GetDictAt(0); - } else { - Decoder = pFilter->GetString(); - pParam = pDict->GetDictFor("DecodeParms"); - } - } - uint32_t width = pDict->GetIntegerFor("Width"); - uint32_t height = pDict->GetIntegerFor("Height"); - uint32_t OrigSize = 0; - if (pCSObj) { - uint32_t bpc = pDict->GetIntegerFor("BitsPerComponent"); - uint32_t nComponents = 1; - CPDF_ColorSpace* pCS = pDoc->LoadColorSpace(pCSObj); - if (pCS) { - nComponents = pCS->CountComponents(); - pDoc->GetPageData()->ReleaseColorSpace(pCSObj); - } else { - nComponents = 3; - } - uint32_t pitch = width; - if (bpc && pitch > INT_MAX / bpc) - return nullptr; - - pitch *= bpc; - if (nComponents && pitch > INT_MAX / nComponents) - return nullptr; - - pitch *= nComponents; - if (pitch > INT_MAX - 7) - return nullptr; - - pitch += 7; - pitch /= 8; - OrigSize = pitch; - } else { - if (width > INT_MAX - 7) - return nullptr; - - OrigSize = ((width + 7) / 8); - } - if (height && OrigSize > INT_MAX / height) - return nullptr; - - OrigSize *= height; - uint8_t* pData = nullptr; - uint32_t dwStreamSize; - if (Decoder.IsEmpty()) { - if (OrigSize > m_Size - m_Pos) { - OrigSize = m_Size - m_Pos; - } - pData = FX_Alloc(uint8_t, OrigSize); - FXSYS_memcpy(pData, m_pBuf + m_Pos, OrigSize); - dwStreamSize = OrigSize; - m_Pos += OrigSize; - } else { - uint32_t dwDestSize = OrigSize; - dwStreamSize = - PDF_DecodeInlineStream(m_pBuf + m_Pos, m_Size - m_Pos, width, height, - Decoder, pParam, pData, dwDestSize); - FX_Free(pData); - if ((int)dwStreamSize < 0) - return nullptr; - - uint32_t dwSavePos = m_Pos; - m_Pos += dwStreamSize; - while (1) { - uint32_t dwPrevPos = m_Pos; - CPDF_StreamParser::SyntaxType type = ParseNextElement(); - if (type == CPDF_StreamParser::EndOfData) - break; - - if (type != CPDF_StreamParser::Keyword) { - dwStreamSize += m_Pos - dwPrevPos; - continue; - } - if (GetWordSize() == 2 && GetWordBuf()[0] == 'E' && - GetWordBuf()[1] == 'I') { - m_Pos = dwPrevPos; - break; - } - dwStreamSize += m_Pos - dwPrevPos; - } - m_Pos = dwSavePos; - pData = FX_Alloc(uint8_t, dwStreamSize); - FXSYS_memcpy(pData, m_pBuf + m_Pos, dwStreamSize); - m_Pos += dwStreamSize; - } - pDict->SetIntegerFor("Length", (int)dwStreamSize); - return new CPDF_Stream(pData, dwStreamSize, pDict); -} - -CPDF_StreamParser::SyntaxType CPDF_StreamParser::ParseNextElement() { - if (m_pLastObj) { - m_pLastObj->Release(); - m_pLastObj = nullptr; - } - - m_WordSize = 0; - FX_BOOL bIsNumber = TRUE; - if (!PositionIsInBounds()) - return EndOfData; - - int ch = m_pBuf[m_Pos++]; - while (1) { - while (PDFCharIsWhitespace(ch)) { - if (!PositionIsInBounds()) - return EndOfData; - - ch = m_pBuf[m_Pos++]; - } - - if (ch != '%') - break; - - while (1) { - if (!PositionIsInBounds()) - return EndOfData; - - ch = m_pBuf[m_Pos++]; - if (PDFCharIsLineEnding(ch)) - break; - } - } - - if (PDFCharIsDelimiter(ch) && ch != '/') { - m_Pos--; - m_pLastObj = ReadNextObject(false, 0); - return Others; - } - - while (1) { - if (m_WordSize < kMaxWordBuffer) - m_WordBuffer[m_WordSize++] = ch; - - if (!PDFCharIsNumeric(ch)) - bIsNumber = FALSE; - - if (!PositionIsInBounds()) - break; - - ch = m_pBuf[m_Pos++]; - - if (PDFCharIsDelimiter(ch) || PDFCharIsWhitespace(ch)) { - m_Pos--; - break; - } - } - - m_WordBuffer[m_WordSize] = 0; - if (bIsNumber) - return Number; - - if (m_WordBuffer[0] == '/') - return Name; - - if (m_WordSize == 4) { - if (memcmp(m_WordBuffer, "true", 4) == 0) { - m_pLastObj = new CPDF_Boolean(TRUE); - return Others; - } - if (memcmp(m_WordBuffer, "null", 4) == 0) { - m_pLastObj = new CPDF_Null; - return Others; - } - } else if (m_WordSize == 5) { - if (memcmp(m_WordBuffer, "false", 5) == 0) { - m_pLastObj = new CPDF_Boolean(FALSE); - return Others; - } - } - return Keyword; -} - -CPDF_Object* CPDF_StreamParser::ReadNextObject(bool bAllowNestedArray, - uint32_t dwInArrayLevel) { - FX_BOOL bIsNumber; - GetNextWord(bIsNumber); - if (!m_WordSize) - return nullptr; - - if (bIsNumber) { - m_WordBuffer[m_WordSize] = 0; - return new CPDF_Number(CFX_ByteStringC(m_WordBuffer, m_WordSize)); - } - - int first_char = m_WordBuffer[0]; - if (first_char == '/') { - CFX_ByteString name = - PDF_NameDecode(CFX_ByteStringC(m_WordBuffer + 1, m_WordSize - 1)); - return new CPDF_Name(m_pPool ? m_pPool->Intern(name) : name); - } - - if (first_char == '(') { - CFX_ByteString str = ReadString(); - return new CPDF_String(m_pPool ? m_pPool->Intern(str) : str, FALSE); - } - - if (first_char == '<') { - if (m_WordSize == 1) - return new CPDF_String(ReadHexString(), TRUE); - - CPDF_Dictionary* pDict = new CPDF_Dictionary(m_pPool); - while (1) { - GetNextWord(bIsNumber); - if (m_WordSize == 2 && m_WordBuffer[0] == '>') - break; - - if (!m_WordSize || m_WordBuffer[0] != '/') { - pDict->Release(); - return nullptr; - } - - CFX_ByteString key = - PDF_NameDecode(CFX_ByteStringC(m_WordBuffer + 1, m_WordSize - 1)); - CPDF_Object* pObj = ReadNextObject(true, 0); - if (!pObj) { - pDict->Release(); - return nullptr; - } - - if (key.IsEmpty()) - pObj->Release(); - else - pDict->SetFor(key, pObj); - } - return pDict; - } - - if (first_char == '[') { - if ((!bAllowNestedArray && dwInArrayLevel) || - dwInArrayLevel > kMaxNestedArrayLevel) { - return nullptr; - } - - CPDF_Array* pArray = new CPDF_Array; - while (1) { - CPDF_Object* pObj = ReadNextObject(bAllowNestedArray, dwInArrayLevel + 1); - if (pObj) { - pArray->Add(pObj); - continue; - } - - if (!m_WordSize || m_WordBuffer[0] == ']') - break; - } - return pArray; - } - - if (m_WordSize == 5 && !memcmp(m_WordBuffer, "false", 5)) - return new CPDF_Boolean(FALSE); - - if (m_WordSize == 4) { - if (memcmp(m_WordBuffer, "true", 4) == 0) - return new CPDF_Boolean(TRUE); - - if (memcmp(m_WordBuffer, "null", 4) == 0) - return new CPDF_Null; - } - - return nullptr; -} - -void CPDF_StreamParser::GetNextWord(FX_BOOL& bIsNumber) { - m_WordSize = 0; - bIsNumber = TRUE; - if (!PositionIsInBounds()) - return; - - int ch = m_pBuf[m_Pos++]; - while (1) { - while (PDFCharIsWhitespace(ch)) { - if (!PositionIsInBounds()) { - return; - } - ch = m_pBuf[m_Pos++]; - } - - if (ch != '%') - break; - - while (1) { - if (!PositionIsInBounds()) - return; - ch = m_pBuf[m_Pos++]; - if (PDFCharIsLineEnding(ch)) - break; - } - } - - if (PDFCharIsDelimiter(ch)) { - bIsNumber = FALSE; - m_WordBuffer[m_WordSize++] = ch; - if (ch == '/') { - while (1) { - if (!PositionIsInBounds()) - return; - ch = m_pBuf[m_Pos++]; - if (!PDFCharIsOther(ch) && !PDFCharIsNumeric(ch)) { - m_Pos--; - return; - } - - if (m_WordSize < kMaxWordBuffer) - m_WordBuffer[m_WordSize++] = ch; - } - } else if (ch == '<') { - if (!PositionIsInBounds()) - return; - ch = m_pBuf[m_Pos++]; - if (ch == '<') - m_WordBuffer[m_WordSize++] = ch; - else - m_Pos--; - } else if (ch == '>') { - if (!PositionIsInBounds()) - return; - ch = m_pBuf[m_Pos++]; - if (ch == '>') - m_WordBuffer[m_WordSize++] = ch; - else - m_Pos--; - } - return; - } - - while (1) { - if (m_WordSize < kMaxWordBuffer) - m_WordBuffer[m_WordSize++] = ch; - if (!PDFCharIsNumeric(ch)) - bIsNumber = FALSE; - - if (!PositionIsInBounds()) - return; - ch = m_pBuf[m_Pos++]; - if (PDFCharIsDelimiter(ch) || PDFCharIsWhitespace(ch)) { - m_Pos--; - break; - } - } -} - -CFX_ByteString CPDF_StreamParser::ReadString() { - if (!PositionIsInBounds()) - return CFX_ByteString(); - - uint8_t ch = m_pBuf[m_Pos++]; - CFX_ByteTextBuf buf; - int parlevel = 0; - int status = 0; - int iEscCode = 0; - while (1) { - switch (status) { - case 0: - if (ch == ')') { - if (parlevel == 0) { - if (buf.GetLength() > kMaxStringLength) { - return CFX_ByteString(buf.GetBuffer(), kMaxStringLength); - } - return buf.MakeString(); - } - parlevel--; - buf.AppendChar(')'); - } else if (ch == '(') { - parlevel++; - buf.AppendChar('('); - } else if (ch == '\\') { - status = 1; - } else { - buf.AppendChar((char)ch); - } - break; - case 1: - if (ch >= '0' && ch <= '7') { - iEscCode = FXSYS_toDecimalDigit(static_cast(ch)); - status = 2; - break; - } - if (ch == 'n') { - buf.AppendChar('\n'); - } else if (ch == 'r') { - buf.AppendChar('\r'); - } else if (ch == 't') { - buf.AppendChar('\t'); - } else if (ch == 'b') { - buf.AppendChar('\b'); - } else if (ch == 'f') { - buf.AppendChar('\f'); - } else if (ch == '\r') { - status = 4; - break; - } else if (ch == '\n') { - } else { - buf.AppendChar(ch); - } - status = 0; - break; - case 2: - if (ch >= '0' && ch <= '7') { - iEscCode = - iEscCode * 8 + FXSYS_toDecimalDigit(static_cast(ch)); - status = 3; - } else { - buf.AppendChar(iEscCode); - status = 0; - continue; - } - break; - case 3: - if (ch >= '0' && ch <= '7') { - iEscCode = - iEscCode * 8 + FXSYS_toDecimalDigit(static_cast(ch)); - buf.AppendChar(iEscCode); - status = 0; - } else { - buf.AppendChar(iEscCode); - status = 0; - continue; - } - break; - case 4: - status = 0; - if (ch != '\n') { - continue; - } - break; - } - if (!PositionIsInBounds()) - break; - - ch = m_pBuf[m_Pos++]; - } - if (PositionIsInBounds()) - ++m_Pos; - - if (buf.GetLength() > kMaxStringLength) { - return CFX_ByteString(buf.GetBuffer(), kMaxStringLength); - } - return buf.MakeString(); -} - -CFX_ByteString CPDF_StreamParser::ReadHexString() { - if (!PositionIsInBounds()) - return CFX_ByteString(); - - CFX_ByteTextBuf buf; - bool bFirst = true; - int code = 0; - while (PositionIsInBounds()) { - int ch = m_pBuf[m_Pos++]; - - if (ch == '>') - break; - - if (!std::isxdigit(ch)) - continue; - - int val = FXSYS_toHexDigit(ch); - if (bFirst) { - code = val * 16; - } else { - code += val; - buf.AppendByte((uint8_t)code); - } - bFirst = !bFirst; - } - if (!bFirst) - buf.AppendChar((char)code); - - if (buf.GetLength() > kMaxStringLength) - return CFX_ByteString(buf.GetBuffer(), kMaxStringLength); - - return buf.MakeString(); -} - -bool CPDF_StreamParser::PositionIsInBounds() const { - return m_Pos < m_Size; -} - -CPDF_ContentParser::CPDF_ContentParser() - : m_Status(Ready), - m_InternalStage(STAGE_GETCONTENT), - m_pObjectHolder(nullptr), - m_bForm(false), - m_pType3Char(nullptr), - 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) { - if (m_Status != Ready || !pPage || !pPage->m_pDocument || - !pPage->m_pFormDict) { - m_Status = Done; - return; - } - m_pObjectHolder = pPage; - m_bForm = FALSE; - m_Status = ToBeContinued; - m_InternalStage = STAGE_GETCONTENT; - m_CurrentOffset = 0; - - CPDF_Object* pContent = pPage->m_pFormDict->GetDirectObjectFor("Contents"); - if (!pContent) { - m_Status = Done; - return; - } - if (CPDF_Stream* pStream = pContent->AsStream()) { - m_nStreams = 0; - m_pSingleStream.reset(new CPDF_StreamAcc); - m_pSingleStream->LoadAllData(pStream, FALSE); - } else if (CPDF_Array* pArray = pContent->AsArray()) { - m_nStreams = pArray->GetCount(); - if (m_nStreams) - m_StreamArray.resize(m_nStreams); - else - m_Status = Done; - } else { - m_Status = Done; - } -} - -void CPDF_ContentParser::Start(CPDF_Form* pForm, - CPDF_AllStates* pGraphicStates, - const CFX_Matrix* pParentMatrix, - CPDF_Type3Char* pType3Char, - int level) { - m_pType3Char = pType3Char; - m_pObjectHolder = pForm; - m_bForm = TRUE; - CFX_Matrix form_matrix = pForm->m_pFormDict->GetMatrixFor("Matrix"); - if (pGraphicStates) { - form_matrix.Concat(pGraphicStates->m_CTM); - } - CPDF_Array* pBBox = pForm->m_pFormDict->GetArrayFor("BBox"); - CFX_FloatRect form_bbox; - CPDF_Path ClipPath; - if (pBBox) { - form_bbox = pBBox->GetRect(); - ClipPath.Emplace(); - ClipPath.AppendRect(form_bbox.left, form_bbox.bottom, form_bbox.right, - form_bbox.top); - ClipPath.Transform(&form_matrix); - if (pParentMatrix) { - ClipPath.Transform(pParentMatrix); - } - form_bbox.Transform(&form_matrix); - if (pParentMatrix) { - form_bbox.Transform(pParentMatrix); - } - } - CPDF_Dictionary* pResources = pForm->m_pFormDict->GetDictFor("Resources"); - m_pParser.reset(new CPDF_StreamContentParser( - pForm->m_pDocument, pForm->m_pPageResources, pForm->m_pResources, - pParentMatrix, pForm, pResources, &form_bbox, pGraphicStates, level)); - m_pParser->GetCurStates()->m_CTM = form_matrix; - m_pParser->GetCurStates()->m_ParentMatrix = form_matrix; - if (ClipPath) { - m_pParser->GetCurStates()->m_ClipPath.AppendPath(ClipPath, FXFILL_WINDING, - TRUE); - } - if (pForm->m_Transparency & PDFTRANS_GROUP) { - CPDF_GeneralState* pState = &m_pParser->GetCurStates()->m_GeneralState; - pState->SetBlendType(FXDIB_BLEND_NORMAL); - pState->SetStrokeAlpha(1.0f); - pState->SetFillAlpha(1.0f); - pState->SetSoftMask(nullptr); - } - m_nStreams = 0; - m_pSingleStream.reset(new CPDF_StreamAcc); - m_pSingleStream->LoadAllData(pForm->m_pFormStream, FALSE); - m_pData = (uint8_t*)m_pSingleStream->GetData(); - m_Size = m_pSingleStream->GetSize(); - m_Status = ToBeContinued; - m_InternalStage = STAGE_PARSE; - m_CurrentOffset = 0; -} - -void CPDF_ContentParser::Continue(IFX_Pause* pPause) { - int steps = 0; - while (m_Status == ToBeContinued) { - if (m_InternalStage == STAGE_GETCONTENT) { - if (m_CurrentOffset == m_nStreams) { - if (!m_StreamArray.empty()) { - FX_SAFE_UINT32 safeSize = 0; - for (const auto& stream : m_StreamArray) { - safeSize += stream->GetSize(); - safeSize += 1; - } - if (!safeSize.IsValid()) { - m_Status = Done; - return; - } - m_Size = safeSize.ValueOrDie(); - m_pData = FX_Alloc(uint8_t, m_Size); - uint32_t pos = 0; - for (const auto& stream : m_StreamArray) { - FXSYS_memcpy(m_pData + pos, stream->GetData(), stream->GetSize()); - pos += stream->GetSize(); - m_pData[pos++] = ' '; - } - m_StreamArray.clear(); - } else { - m_pData = (uint8_t*)m_pSingleStream->GetData(); - m_Size = m_pSingleStream->GetSize(); - } - m_InternalStage = STAGE_PARSE; - m_CurrentOffset = 0; - } else { - CPDF_Array* pContent = - m_pObjectHolder->m_pFormDict->GetArrayFor("Contents"); - m_StreamArray[m_CurrentOffset].reset(new CPDF_StreamAcc); - CPDF_Stream* pStreamObj = ToStream( - pContent ? pContent->GetDirectObjectAt(m_CurrentOffset) : nullptr); - m_StreamArray[m_CurrentOffset]->LoadAllData(pStreamObj, FALSE); - m_CurrentOffset++; - } - } - if (m_InternalStage == STAGE_PARSE) { - if (!m_pParser) { - m_pParser.reset(new CPDF_StreamContentParser( - m_pObjectHolder->m_pDocument, m_pObjectHolder->m_pPageResources, - nullptr, nullptr, m_pObjectHolder, m_pObjectHolder->m_pResources, - &m_pObjectHolder->m_BBox, nullptr, 0)); - m_pParser->GetCurStates()->m_ColorState.SetDefault(); - } - if (m_CurrentOffset >= m_Size) { - m_InternalStage = STAGE_CHECKCLIP; - } else { - m_CurrentOffset += - m_pParser->Parse(m_pData + m_CurrentOffset, - m_Size - m_CurrentOffset, PARSE_STEP_LIMIT); - } - } - if (m_InternalStage == STAGE_CHECKCLIP) { - if (m_pType3Char) { - m_pType3Char->m_bColored = m_pParser->IsColored(); - m_pType3Char->m_Width = - FXSYS_round(m_pParser->GetType3Data()[0] * 1000); - m_pType3Char->m_BBox.left = - FXSYS_round(m_pParser->GetType3Data()[2] * 1000); - m_pType3Char->m_BBox.bottom = - FXSYS_round(m_pParser->GetType3Data()[3] * 1000); - m_pType3Char->m_BBox.right = - FXSYS_round(m_pParser->GetType3Data()[4] * 1000); - m_pType3Char->m_BBox.top = - FXSYS_round(m_pParser->GetType3Data()[5] * 1000); - } - for (auto& pObj : *m_pObjectHolder->GetPageObjectList()) { - if (!pObj->m_ClipPath) - continue; - if (pObj->m_ClipPath.GetPathCount() != 1) - continue; - if (pObj->m_ClipPath.GetTextCount()) - continue; - CPDF_Path ClipPath = pObj->m_ClipPath.GetPath(0); - if (!ClipPath.IsRect() || pObj->IsShading()) - continue; - CFX_FloatRect old_rect(ClipPath.GetPointX(0), ClipPath.GetPointY(0), - ClipPath.GetPointX(2), ClipPath.GetPointY(2)); - CFX_FloatRect obj_rect(pObj->m_Left, pObj->m_Bottom, pObj->m_Right, - pObj->m_Top); - if (old_rect.Contains(obj_rect)) { - pObj->m_ClipPath.SetNull(); - } - } - m_Status = Done; - return; - } - steps++; - if (pPause && pPause->NeedToPauseNow()) { - break; - } - } -} -- cgit v1.2.3