From 764ec513eecbebd12781bcc96ce81ed5e736ee92 Mon Sep 17 00:00:00 2001 From: Dan Sinclair Date: Mon, 14 Mar 2016 13:35:12 -0400 Subject: Move core/src/ up to core/. This CL moves the core/src/ files up to core/ and fixes up the include guards, includes and build files. R=tsepez@chromium.org Review URL: https://codereview.chromium.org/1800523005 . --- core/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp | 888 ++++++++++++++++++++++++ 1 file changed, 888 insertions(+) create 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 new file mode 100644 index 0000000000..13c56b4718 --- /dev/null +++ b/core/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp @@ -0,0 +1,888 @@ +// 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/fpdf_parser/fpdf_parser_utility.h" +#include "core/include/fpdfapi/cpdf_array.h" +#include "core/include/fpdfapi/cpdf_boolean.h" +#include "core/include/fpdfapi/cpdf_dictionary.h" +#include "core/include/fpdfapi/cpdf_document.h" +#include "core/include/fpdfapi/cpdf_name.h" +#include "core/include/fpdfapi/cpdf_null.h" +#include "core/include/fpdfapi/cpdf_number.h" +#include "core/include/fpdfapi/cpdf_string.h" +#include "core/include/fpdfapi/fpdf_module.h" +#include "core/include/fpdfapi/fpdf_page.h" +#include "core/include/fpdfapi/fpdf_parser_decode.h" +#include "core/include/fxcodec/fx_codec.h" +#include "core/include/fxcrt/fx_ext.h" +#include "core/include/fxcrt/fx_safe_types.h" + +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) { + if (!pDecoder) { + return (FX_DWORD)-1; + } + 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 -1; + } + 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); + } + FX_DWORD srcoff = pDecoder->GetSrcOffset(); + delete pDecoder; + return srcoff; +} + +ICodec_ScanlineDecoder* FPDFAPI_CreateFaxDecoder( + const uint8_t* src_buf, + FX_DWORD src_size, + int width, + int height, + const CPDF_Dictionary* pParams); + +FX_DWORD PDF_DecodeInlineStream(const uint8_t* src_buf, + FX_DWORD limit, + int width, + int height, + CFX_ByteString& decoder, + CPDF_Dictionary* pParam, + uint8_t*& dest_buf, + FX_DWORD& dest_size) { + if (decoder == "CCITTFaxDecode" || decoder == "CCF") { + ICodec_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") { + ICodec_ScanlineDecoder* pDecoder = + CPDF_ModuleMgr::Get()->GetJpegModule()->CreateDecoder( + src_buf, limit, width, height, 0, + pParam ? pParam->GetIntegerBy("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 (FX_DWORD)-1; +} + +CPDF_Stream* CPDF_StreamParser::ReadInlineStream(CPDF_Document* pDoc, + CPDF_Dictionary* pDict, + CPDF_Object* pCSObj, + FX_BOOL bDecode) { + 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->GetElementValue("Filter"); + if (pFilter) { + if (CPDF_Array* pArray = pFilter->AsArray()) { + Decoder = pArray->GetStringAt(0); + CPDF_Array* pParams = pDict->GetArrayBy("DecodeParms"); + if (pParams) + pParam = pParams->GetDictAt(0); + } else { + Decoder = pFilter->GetString(); + pParam = pDict->GetDictBy("DecodeParms"); + } + } + FX_DWORD width = pDict->GetIntegerBy("Width"); + FX_DWORD height = pDict->GetIntegerBy("Height"); + FX_DWORD OrigSize = 0; + if (pCSObj) { + FX_DWORD bpc = pDict->GetIntegerBy("BitsPerComponent"); + FX_DWORD nComponents = 1; + CPDF_ColorSpace* pCS = pDoc->LoadColorSpace(pCSObj); + if (!pCS) { + nComponents = 3; + } else { + nComponents = pCS->CountComponents(); + pDoc->GetPageData()->ReleaseColorSpace(pCSObj); + } + FX_DWORD pitch = width; + if (bpc && pitch > INT_MAX / bpc) { + return NULL; + } + pitch *= bpc; + if (nComponents && pitch > INT_MAX / nComponents) { + return NULL; + } + pitch *= nComponents; + if (pitch > INT_MAX - 7) { + return NULL; + } + pitch += 7; + pitch /= 8; + OrigSize = pitch; + } else { + if (width > INT_MAX - 7) { + return NULL; + } + OrigSize = ((width + 7) / 8); + } + if (height && OrigSize > INT_MAX / height) { + return NULL; + } + OrigSize *= height; + uint8_t* pData = NULL; + FX_DWORD 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 { + FX_DWORD dwDestSize = OrigSize; + dwStreamSize = + PDF_DecodeInlineStream(m_pBuf + m_Pos, m_Size - m_Pos, width, height, + Decoder, pParam, pData, dwDestSize); + if ((int)dwStreamSize < 0) { + FX_Free(pData); + return NULL; + } + if (bDecode) { + m_Pos += dwStreamSize; + dwStreamSize = dwDestSize; + if (CPDF_Array* pArray = pFilter->AsArray()) { + pArray->RemoveAt(0); + CPDF_Array* pParams = pDict->GetArrayBy("DecodeParms"); + if (pParams) + pParams->RemoveAt(0); + } else { + pDict->RemoveAt("Filter"); + pDict->RemoveAt("DecodeParms"); + } + } else { + FX_Free(pData); + FX_DWORD dwSavePos = m_Pos; + m_Pos += dwStreamSize; + while (1) { + FX_DWORD 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->SetAtInteger("Length", (int)dwStreamSize); + return new CPDF_Stream(pData, dwStreamSize, pDict); +} + +#define MAX_WORD_BUFFER 256 +#define MAX_STRING_LENGTH 32767 +#define FXDWORD_TRUE FXDWORD_FROM_LSBFIRST(0x65757274) +#define FXDWORD_NULL FXDWORD_FROM_LSBFIRST(0x6c6c756e) +#define FXDWORD_FALS FXDWORD_FROM_LSBFIRST(0x736c6166) +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(); + return Others; + } + + while (1) { + if (m_WordSize < MAX_WORD_BUFFER) + 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 (*(FX_DWORD*)m_WordBuffer == FXDWORD_TRUE) { + m_pLastObj = new CPDF_Boolean(TRUE); + return Others; + } + if (*(FX_DWORD*)m_WordBuffer == FXDWORD_NULL) { + m_pLastObj = new CPDF_Null; + return Others; + } + } else if (m_WordSize == 5) { + if (*(FX_DWORD*)m_WordBuffer == FXDWORD_FALS && m_WordBuffer[4] == 'e') { + m_pLastObj = new CPDF_Boolean(FALSE); + return Others; + } + } + return Keyword; +} + +void CPDF_StreamParser::SkipPathObject() { + FX_DWORD command_startpos = m_Pos; + if (!PositionIsInBounds()) + return; + + int ch = m_pBuf[m_Pos++]; + while (1) { + while (PDFCharIsWhitespace(ch)) { + if (!PositionIsInBounds()) + return; + ch = m_pBuf[m_Pos++]; + } + + if (!PDFCharIsNumeric(ch)) { + m_Pos = command_startpos; + return; + } + + while (1) { + while (!PDFCharIsWhitespace(ch)) { + if (!PositionIsInBounds()) + return; + ch = m_pBuf[m_Pos++]; + } + + while (PDFCharIsWhitespace(ch)) { + if (!PositionIsInBounds()) + return; + ch = m_pBuf[m_Pos++]; + } + + if (PDFCharIsNumeric(ch)) + continue; + + FX_DWORD op_startpos = m_Pos - 1; + while (!PDFCharIsWhitespace(ch) && !PDFCharIsDelimiter(ch)) { + if (!PositionIsInBounds()) + return; + ch = m_pBuf[m_Pos++]; + } + + 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; + GetNextWord(bIsNumber); + if (m_WordSize == 0) { + return NULL; + } + 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 == '/') { + return new CPDF_Name( + PDF_NameDecode(CFX_ByteStringC(m_WordBuffer + 1, m_WordSize - 1))); + } + if (first_char == '(') { + return new CPDF_String(ReadString(), FALSE); + } + if (first_char == '<') { + if (m_WordSize == 1) { + return new CPDF_String(ReadHexString(), TRUE); + } + CPDF_Dictionary* pDict = new CPDF_Dictionary; + while (1) { + GetNextWord(bIsNumber); + if (m_WordSize == 0) { + pDict->Release(); + return nullptr; + } + if (m_WordSize == 2 && m_WordBuffer[0] == '>') { + break; + } + if (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); + if (!pObj) { + pDict->Release(); + return nullptr; + } + if (!key.IsEmpty()) { + pDict->SetAt(key, pObj); + } else { + pObj->Release(); + } + } + return pDict; + } + if (first_char == '[') { + if (!bAllowNestedArray && bInArray) { + return NULL; + } + CPDF_Array* pArray = new CPDF_Array; + while (1) { + CPDF_Object* pObj = ReadNextObject(bAllowNestedArray, TRUE); + if (pObj) { + pArray->Add(pObj); + continue; + } + + if (m_WordSize == 0 || m_WordBuffer[0] == ']') + break; + } + return pArray; + } + if (m_WordSize == 4) { + if (*(FX_DWORD*)m_WordBuffer == FXDWORD_TRUE) { + return new CPDF_Boolean(TRUE); + } + if (*(FX_DWORD*)m_WordBuffer == FXDWORD_NULL) { + return new CPDF_Null; + } + } else if (m_WordSize == 5) { + if (*(FX_DWORD*)m_WordBuffer == FXDWORD_FALS && m_WordBuffer[4] == 'e') { + return new CPDF_Boolean(FALSE); + } + } + return NULL; +} + +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 < MAX_WORD_BUFFER) + 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 < MAX_WORD_BUFFER) + 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() > MAX_STRING_LENGTH) { + return CFX_ByteString(buf.GetBuffer(), MAX_STRING_LENGTH); + } + return buf.GetByteString(); + } + 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() > MAX_STRING_LENGTH) { + return CFX_ByteString(buf.GetBuffer(), MAX_STRING_LENGTH); + } + return buf.GetByteString(); +} + +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() > MAX_STRING_LENGTH) + return CFX_ByteString(buf.GetBuffer(), MAX_STRING_LENGTH); + + return buf.GetByteString(); +} + +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, CPDF_ParseOptions* pOptions) { + if (m_Status != Ready || !pPage || !pPage->m_pDocument || + !pPage->m_pFormDict) { + m_Status = Done; + return; + } + m_pObjectHolder = pPage; + m_bForm = FALSE; + if (pOptions) { + m_Options = *pOptions; + } + m_Status = ToBeContinued; + m_InternalStage = STAGE_GETCONTENT; + m_CurrentOffset = 0; + + CPDF_Object* pContent = pPage->m_pFormDict->GetElementValue("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, + CFX_Matrix* pParentMatrix, + CPDF_Type3Char* pType3Char, + CPDF_ParseOptions* pOptions, + int level) { + m_pType3Char = pType3Char; + m_pObjectHolder = pForm; + m_bForm = TRUE; + CFX_Matrix form_matrix = pForm->m_pFormDict->GetMatrixBy("Matrix"); + if (pGraphicStates) { + form_matrix.Concat(pGraphicStates->m_CTM); + } + CPDF_Array* pBBox = pForm->m_pFormDict->GetArrayBy("BBox"); + CFX_FloatRect form_bbox; + CPDF_Path ClipPath; + if (pBBox) { + form_bbox = pBBox->GetRect(); + ClipPath.New(); + 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->GetDictBy("Resources"); + m_pParser.reset(new CPDF_StreamContentParser( + pForm->m_pDocument, pForm->m_pPageResources, pForm->m_pResources, + pParentMatrix, pForm, pResources, &form_bbox, pOptions, pGraphicStates, + level)); + m_pParser->GetCurStates()->m_CTM = form_matrix; + m_pParser->GetCurStates()->m_ParentMatrix = form_matrix; + if (ClipPath.NotNull()) { + m_pParser->GetCurStates()->m_ClipPath.AppendPath(ClipPath, FXFILL_WINDING, + TRUE); + } + if (pForm->m_Transparency & PDFTRANS_GROUP) { + CPDF_GeneralStateData* pData = + m_pParser->GetCurStates()->m_GeneralState.GetModify(); + pData->m_BlendType = FXDIB_BLEND_NORMAL; + pData->m_StrokeAlpha = 1.0f; + pData->m_FillAlpha = 1.0f; + pData->m_pSoftMask = NULL; + } + 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_DWORD 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); + FX_DWORD 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->GetArrayBy("Contents"); + m_StreamArray[m_CurrentOffset].reset(new CPDF_StreamAcc); + CPDF_Stream* pStreamObj = ToStream( + pContent ? pContent->GetElementValue(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, &m_Options, nullptr, 0)); + m_pParser->GetCurStates()->m_ColorState.GetModify()->Default(); + } + 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.IsNull()) { + 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