diff options
Diffstat (limited to 'core/fpdfapi/fpdf_page/fpdf_page_parser.cpp')
| -rw-r--r-- | core/fpdfapi/fpdf_page/fpdf_page_parser.cpp | 1819 |
1 files changed, 1819 insertions, 0 deletions
diff --git a/core/fpdfapi/fpdf_page/fpdf_page_parser.cpp b/core/fpdfapi/fpdf_page/fpdf_page_parser.cpp new file mode 100644 index 0000000000..e4cdaba9d0 --- /dev/null +++ b/core/fpdfapi/fpdf_page/fpdf_page_parser.cpp @@ -0,0 +1,1819 @@ +// 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 <vector> + +#include "core/include/fpdfapi/cpdf_array.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_number.h" +#include "core/include/fpdfapi/cpdf_reference.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/fpdfapi/fpdf_serial.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"; + +struct _FX_BSTR { + const FX_CHAR* m_Ptr; + int m_Size; +}; +#define _FX_BSTRC(str) \ + { str, sizeof(str) - 1 } + +struct PDF_AbbrPairs { + _FX_BSTR full_name; + _FX_BSTR abbr; +}; + +const PDF_AbbrPairs PDF_InlineKeyAbbr[] = { + {_FX_BSTRC("BitsPerComponent"), _FX_BSTRC("BPC")}, + {_FX_BSTRC("ColorSpace"), _FX_BSTRC("CS")}, + {_FX_BSTRC("Decode"), _FX_BSTRC("D")}, + {_FX_BSTRC("DecodeParms"), _FX_BSTRC("DP")}, + {_FX_BSTRC("Filter"), _FX_BSTRC("F")}, + {_FX_BSTRC("Height"), _FX_BSTRC("H")}, + {_FX_BSTRC("ImageMask"), _FX_BSTRC("IM")}, + {_FX_BSTRC("Interpolate"), _FX_BSTRC("I")}, + {_FX_BSTRC("Width"), _FX_BSTRC("W")}, +}; + +const PDF_AbbrPairs PDF_InlineValueAbbr[] = { + {_FX_BSTRC("DeviceGray"), _FX_BSTRC("G")}, + {_FX_BSTRC("DeviceRGB"), _FX_BSTRC("RGB")}, + {_FX_BSTRC("DeviceCMYK"), _FX_BSTRC("CMYK")}, + {_FX_BSTRC("Indexed"), _FX_BSTRC("I")}, + {_FX_BSTRC("ASCIIHexDecode"), _FX_BSTRC("AHx")}, + {_FX_BSTRC("ASCII85Decode"), _FX_BSTRC("A85")}, + {_FX_BSTRC("LZWDecode"), _FX_BSTRC("LZW")}, + {_FX_BSTRC("FlateDecode"), _FX_BSTRC("Fl")}, + {_FX_BSTRC("RunLengthDecode"), _FX_BSTRC("RL")}, + {_FX_BSTRC("CCITTFaxDecode"), _FX_BSTRC("CCF")}, + {_FX_BSTRC("DCTDecode"), _FX_BSTRC("DCT")}, +}; + +struct AbbrReplacementOp { + bool is_replace_key; + CFX_ByteString key; + CFX_ByteStringC replacement; +}; + +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_; +}; + +CFX_ByteStringC PDF_FindFullName(const PDF_AbbrPairs* table, + size_t count, + const CFX_ByteStringC& abbr) { + for (size_t i = 0; i < count; ++i) { + if (abbr.GetLength() != table[i].abbr.m_Size) + continue; + if (memcmp(abbr.GetPtr(), table[i].abbr.m_Ptr, abbr.GetLength())) + continue; + return CFX_ByteStringC(table[i].full_name.m_Ptr, table[i].full_name.m_Size); + } + return CFX_ByteStringC(); +} + +} // namespace + +bool IsPathOperator(const uint8_t* buf, size_t len) { + if (len == 1) { + uint8_t op = buf[0]; + if (op == kPathOperatorSubpath || op == kPathOperatorLine || + op == kPathOperatorCubicBezier1 || op == kPathOperatorCubicBezier2 || + op == kPathOperatorCubicBezier3) { + return true; + } + } else if (len == 2) { + if (buf[0] == kPathOperatorRectangle[0] && + buf[1] == kPathOperatorRectangle[1]) { + return true; + } + } + return false; +} + +CPDF_StreamContentParser::CPDF_StreamContentParser( + CPDF_Document* pDocument, + CPDF_Dictionary* pPageResources, + CPDF_Dictionary* pParentResources, + CFX_Matrix* pmtContentToUser, + CPDF_PageObjectHolder* pObjHolder, + CPDF_Dictionary* pResources, + CFX_FloatRect* pBBox, + CPDF_ParseOptions* pOptions, + CPDF_AllStates* pStates, + int level) + : m_pDocument(pDocument), + m_pPageResources(pPageResources), + m_pParentResources(pParentResources), + m_pResources(pResources), + m_pObjectHolder(pObjHolder), + m_Level(level), + m_ParamStartPos(0), + m_ParamCount(0), + m_pCurStates(new CPDF_AllStates), + m_pLastTextObject(nullptr), + m_DefFontSize(0), + m_pPathPoints(nullptr), + m_PathPointCount(0), + m_PathAllocSize(0), + m_PathCurrentX(0.0f), + m_PathCurrentY(0.0f), + m_PathClipType(0), + m_pLastImage(nullptr), + m_pLastImageDict(nullptr), + m_pLastCloneImageDict(nullptr), + m_bReleaseLastDict(TRUE), + m_bColored(FALSE), + m_bResourceMissing(FALSE) { + if (pmtContentToUser) { + m_mtContentToUser = *pmtContentToUser; + } + if (pOptions) { + m_Options = *pOptions; + } + if (!m_pResources) { + m_pResources = m_pParentResources; + } + if (!m_pResources) { + m_pResources = m_pPageResources; + } + if (pBBox) { + m_BBox = *pBBox; + } + if (pStates) { + m_pCurStates->Copy(*pStates); + } else { + m_pCurStates->m_GeneralState.New(); + m_pCurStates->m_GraphState.New(); + m_pCurStates->m_TextState.New(); + m_pCurStates->m_ColorState.New(); + } + for (size_t i = 0; i < FX_ArraySize(m_Type3Data); ++i) { + m_Type3Data[i] = 0.0; + } +} + +CPDF_StreamContentParser::~CPDF_StreamContentParser() { + ClearAllParams(); + FX_Free(m_pPathPoints); + if (m_pLastImageDict) { + m_pLastImageDict->Release(); + } + if (m_pLastCloneImageDict) { + m_pLastCloneImageDict->Release(); + } +} + +int CPDF_StreamContentParser::GetNextParamPos() { + if (m_ParamCount == PARAM_BUF_SIZE) { + m_ParamStartPos++; + if (m_ParamStartPos == PARAM_BUF_SIZE) { + m_ParamStartPos = 0; + } + if (m_ParamBuf[m_ParamStartPos].m_Type == 0) { + if (CPDF_Object* pObject = m_ParamBuf[m_ParamStartPos].m_pObject) + pObject->Release(); + } + return m_ParamStartPos; + } + int index = m_ParamStartPos + m_ParamCount; + if (index >= PARAM_BUF_SIZE) { + index -= PARAM_BUF_SIZE; + } + m_ParamCount++; + return index; +} + +void CPDF_StreamContentParser::AddNameParam(const FX_CHAR* name, int len) { + int index = GetNextParamPos(); + if (len > 32) { + m_ParamBuf[index].m_Type = ContentParam::OBJECT; + m_ParamBuf[index].m_pObject = + new CPDF_Name(PDF_NameDecode(CFX_ByteStringC(name, len))); + } else { + m_ParamBuf[index].m_Type = ContentParam::NAME; + if (!FXSYS_memchr(name, '#', len)) { + FXSYS_memcpy(m_ParamBuf[index].m_Name.m_Buffer, name, len); + m_ParamBuf[index].m_Name.m_Len = len; + } else { + CFX_ByteString str = PDF_NameDecode(CFX_ByteStringC(name, len)); + FXSYS_memcpy(m_ParamBuf[index].m_Name.m_Buffer, str.c_str(), + str.GetLength()); + m_ParamBuf[index].m_Name.m_Len = str.GetLength(); + } + } +} + +void CPDF_StreamContentParser::AddNumberParam(const FX_CHAR* str, int len) { + int index = GetNextParamPos(); + m_ParamBuf[index].m_Type = ContentParam::NUMBER; + FX_atonum(CFX_ByteStringC(str, len), m_ParamBuf[index].m_Number.m_bInteger, + &m_ParamBuf[index].m_Number.m_Integer); +} +void CPDF_StreamContentParser::AddObjectParam(CPDF_Object* pObj) { + int index = GetNextParamPos(); + m_ParamBuf[index].m_Type = ContentParam::OBJECT; + m_ParamBuf[index].m_pObject = pObj; +} +void CPDF_StreamContentParser::ClearAllParams() { + FX_DWORD index = m_ParamStartPos; + for (FX_DWORD i = 0; i < m_ParamCount; i++) { + if (m_ParamBuf[index].m_Type == 0) { + if (CPDF_Object* pObject = m_ParamBuf[index].m_pObject) + pObject->Release(); + } + index++; + if (index == PARAM_BUF_SIZE) { + index = 0; + } + } + m_ParamStartPos = 0; + m_ParamCount = 0; +} + +CPDF_Object* CPDF_StreamContentParser::GetObject(FX_DWORD index) { + if (index >= m_ParamCount) { + return NULL; + } + int real_index = m_ParamStartPos + m_ParamCount - index - 1; + if (real_index >= PARAM_BUF_SIZE) { + real_index -= PARAM_BUF_SIZE; + } + ContentParam& param = m_ParamBuf[real_index]; + if (param.m_Type == ContentParam::NUMBER) { + CPDF_Number* pNumber = param.m_Number.m_bInteger + ? new CPDF_Number(param.m_Number.m_Integer) + : new CPDF_Number(param.m_Number.m_Float); + + param.m_Type = ContentParam::OBJECT; + param.m_pObject = pNumber; + return pNumber; + } + if (param.m_Type == ContentParam::NAME) { + CPDF_Name* pName = new CPDF_Name( + CFX_ByteString(param.m_Name.m_Buffer, param.m_Name.m_Len)); + param.m_Type = ContentParam::OBJECT; + param.m_pObject = pName; + return pName; + } + if (param.m_Type == ContentParam::OBJECT) { + return param.m_pObject; + } + ASSERT(FALSE); + return NULL; +} + +CFX_ByteString CPDF_StreamContentParser::GetString(FX_DWORD index) { + if (index >= m_ParamCount) { + return CFX_ByteString(); + } + int real_index = m_ParamStartPos + m_ParamCount - index - 1; + if (real_index >= PARAM_BUF_SIZE) { + real_index -= PARAM_BUF_SIZE; + } + ContentParam& param = m_ParamBuf[real_index]; + if (param.m_Type == ContentParam::NAME) { + return CFX_ByteString(param.m_Name.m_Buffer, param.m_Name.m_Len); + } + if (param.m_Type == 0 && param.m_pObject) { + return param.m_pObject->GetString(); + } + return CFX_ByteString(); +} + +FX_FLOAT CPDF_StreamContentParser::GetNumber(FX_DWORD index) { + if (index >= m_ParamCount) { + return 0; + } + int real_index = m_ParamStartPos + m_ParamCount - index - 1; + if (real_index >= PARAM_BUF_SIZE) { + real_index -= PARAM_BUF_SIZE; + } + ContentParam& param = m_ParamBuf[real_index]; + if (param.m_Type == ContentParam::NUMBER) { + return param.m_Number.m_bInteger ? (FX_FLOAT)param.m_Number.m_Integer + : param.m_Number.m_Float; + } + if (param.m_Type == 0 && param.m_pObject) { + return param.m_pObject->GetNumber(); + } + return 0; +} + +FX_FLOAT CPDF_StreamContentParser::GetNumber16(FX_DWORD index) { + return GetNumber(index); +} + +void CPDF_StreamContentParser::SetGraphicStates(CPDF_PageObject* pObj, + FX_BOOL bColor, + FX_BOOL bText, + FX_BOOL bGraph) { + pObj->m_GeneralState = m_pCurStates->m_GeneralState; + pObj->m_ClipPath = m_pCurStates->m_ClipPath; + pObj->m_ContentMark = m_CurContentMark; + if (bColor) { + pObj->m_ColorState = m_pCurStates->m_ColorState; + } + if (bGraph) { + pObj->m_GraphState = m_pCurStates->m_GraphState; + } + if (bText) { + pObj->m_TextState = m_pCurStates->m_TextState; + } +} + +// static +CPDF_StreamContentParser::OpCodes +CPDF_StreamContentParser::InitializeOpCodes() { + return OpCodes({ + {FXBSTR_ID('"', 0, 0, 0), + &CPDF_StreamContentParser::Handle_NextLineShowText_Space}, + {FXBSTR_ID('\'', 0, 0, 0), + &CPDF_StreamContentParser::Handle_NextLineShowText}, + {FXBSTR_ID('B', 0, 0, 0), + &CPDF_StreamContentParser::Handle_FillStrokePath}, + {FXBSTR_ID('B', '*', 0, 0), + &CPDF_StreamContentParser::Handle_EOFillStrokePath}, + {FXBSTR_ID('B', 'D', 'C', 0), + &CPDF_StreamContentParser::Handle_BeginMarkedContent_Dictionary}, + {FXBSTR_ID('B', 'I', 0, 0), &CPDF_StreamContentParser::Handle_BeginImage}, + {FXBSTR_ID('B', 'M', 'C', 0), + &CPDF_StreamContentParser::Handle_BeginMarkedContent}, + {FXBSTR_ID('B', 'T', 0, 0), &CPDF_StreamContentParser::Handle_BeginText}, + {FXBSTR_ID('C', 'S', 0, 0), + &CPDF_StreamContentParser::Handle_SetColorSpace_Stroke}, + {FXBSTR_ID('D', 'P', 0, 0), + &CPDF_StreamContentParser::Handle_MarkPlace_Dictionary}, + {FXBSTR_ID('D', 'o', 0, 0), + &CPDF_StreamContentParser::Handle_ExecuteXObject}, + {FXBSTR_ID('E', 'I', 0, 0), &CPDF_StreamContentParser::Handle_EndImage}, + {FXBSTR_ID('E', 'M', 'C', 0), + &CPDF_StreamContentParser::Handle_EndMarkedContent}, + {FXBSTR_ID('E', 'T', 0, 0), &CPDF_StreamContentParser::Handle_EndText}, + {FXBSTR_ID('F', 0, 0, 0), &CPDF_StreamContentParser::Handle_FillPathOld}, + {FXBSTR_ID('G', 0, 0, 0), + &CPDF_StreamContentParser::Handle_SetGray_Stroke}, + {FXBSTR_ID('I', 'D', 0, 0), + &CPDF_StreamContentParser::Handle_BeginImageData}, + {FXBSTR_ID('J', 0, 0, 0), &CPDF_StreamContentParser::Handle_SetLineCap}, + {FXBSTR_ID('K', 0, 0, 0), + &CPDF_StreamContentParser::Handle_SetCMYKColor_Stroke}, + {FXBSTR_ID('M', 0, 0, 0), + &CPDF_StreamContentParser::Handle_SetMiterLimit}, + {FXBSTR_ID('M', 'P', 0, 0), &CPDF_StreamContentParser::Handle_MarkPlace}, + {FXBSTR_ID('Q', 0, 0, 0), + &CPDF_StreamContentParser::Handle_RestoreGraphState}, + {FXBSTR_ID('R', 'G', 0, 0), + &CPDF_StreamContentParser::Handle_SetRGBColor_Stroke}, + {FXBSTR_ID('S', 0, 0, 0), &CPDF_StreamContentParser::Handle_StrokePath}, + {FXBSTR_ID('S', 'C', 0, 0), + &CPDF_StreamContentParser::Handle_SetColor_Stroke}, + {FXBSTR_ID('S', 'C', 'N', 0), + &CPDF_StreamContentParser::Handle_SetColorPS_Stroke}, + {FXBSTR_ID('T', '*', 0, 0), + &CPDF_StreamContentParser::Handle_MoveToNextLine}, + {FXBSTR_ID('T', 'D', 0, 0), + &CPDF_StreamContentParser::Handle_MoveTextPoint_SetLeading}, + {FXBSTR_ID('T', 'J', 0, 0), + &CPDF_StreamContentParser::Handle_ShowText_Positioning}, + {FXBSTR_ID('T', 'L', 0, 0), + &CPDF_StreamContentParser::Handle_SetTextLeading}, + {FXBSTR_ID('T', 'c', 0, 0), + &CPDF_StreamContentParser::Handle_SetCharSpace}, + {FXBSTR_ID('T', 'd', 0, 0), + &CPDF_StreamContentParser::Handle_MoveTextPoint}, + {FXBSTR_ID('T', 'f', 0, 0), &CPDF_StreamContentParser::Handle_SetFont}, + {FXBSTR_ID('T', 'j', 0, 0), &CPDF_StreamContentParser::Handle_ShowText}, + {FXBSTR_ID('T', 'm', 0, 0), + &CPDF_StreamContentParser::Handle_SetTextMatrix}, + {FXBSTR_ID('T', 'r', 0, 0), + &CPDF_StreamContentParser::Handle_SetTextRenderMode}, + {FXBSTR_ID('T', 's', 0, 0), + &CPDF_StreamContentParser::Handle_SetTextRise}, + {FXBSTR_ID('T', 'w', 0, 0), + &CPDF_StreamContentParser::Handle_SetWordSpace}, + {FXBSTR_ID('T', 'z', 0, 0), + &CPDF_StreamContentParser::Handle_SetHorzScale}, + {FXBSTR_ID('W', 0, 0, 0), &CPDF_StreamContentParser::Handle_Clip}, + {FXBSTR_ID('W', '*', 0, 0), &CPDF_StreamContentParser::Handle_EOClip}, + {FXBSTR_ID('b', 0, 0, 0), + &CPDF_StreamContentParser::Handle_CloseFillStrokePath}, + {FXBSTR_ID('b', '*', 0, 0), + &CPDF_StreamContentParser::Handle_CloseEOFillStrokePath}, + {FXBSTR_ID('c', 0, 0, 0), &CPDF_StreamContentParser::Handle_CurveTo_123}, + {FXBSTR_ID('c', 'm', 0, 0), + &CPDF_StreamContentParser::Handle_ConcatMatrix}, + {FXBSTR_ID('c', 's', 0, 0), + &CPDF_StreamContentParser::Handle_SetColorSpace_Fill}, + {FXBSTR_ID('d', 0, 0, 0), &CPDF_StreamContentParser::Handle_SetDash}, + {FXBSTR_ID('d', '0', 0, 0), + &CPDF_StreamContentParser::Handle_SetCharWidth}, + {FXBSTR_ID('d', '1', 0, 0), + &CPDF_StreamContentParser::Handle_SetCachedDevice}, + {FXBSTR_ID('f', 0, 0, 0), &CPDF_StreamContentParser::Handle_FillPath}, + {FXBSTR_ID('f', '*', 0, 0), &CPDF_StreamContentParser::Handle_EOFillPath}, + {FXBSTR_ID('g', 0, 0, 0), &CPDF_StreamContentParser::Handle_SetGray_Fill}, + {FXBSTR_ID('g', 's', 0, 0), + &CPDF_StreamContentParser::Handle_SetExtendGraphState}, + {FXBSTR_ID('h', 0, 0, 0), &CPDF_StreamContentParser::Handle_ClosePath}, + {FXBSTR_ID('i', 0, 0, 0), &CPDF_StreamContentParser::Handle_SetFlat}, + {FXBSTR_ID('j', 0, 0, 0), &CPDF_StreamContentParser::Handle_SetLineJoin}, + {FXBSTR_ID('k', 0, 0, 0), + &CPDF_StreamContentParser::Handle_SetCMYKColor_Fill}, + {FXBSTR_ID('l', 0, 0, 0), &CPDF_StreamContentParser::Handle_LineTo}, + {FXBSTR_ID('m', 0, 0, 0), &CPDF_StreamContentParser::Handle_MoveTo}, + {FXBSTR_ID('n', 0, 0, 0), &CPDF_StreamContentParser::Handle_EndPath}, + {FXBSTR_ID('q', 0, 0, 0), + &CPDF_StreamContentParser::Handle_SaveGraphState}, + {FXBSTR_ID('r', 'e', 0, 0), &CPDF_StreamContentParser::Handle_Rectangle}, + {FXBSTR_ID('r', 'g', 0, 0), + &CPDF_StreamContentParser::Handle_SetRGBColor_Fill}, + {FXBSTR_ID('r', 'i', 0, 0), + &CPDF_StreamContentParser::Handle_SetRenderIntent}, + {FXBSTR_ID('s', 0, 0, 0), + &CPDF_StreamContentParser::Handle_CloseStrokePath}, + {FXBSTR_ID('s', 'c', 0, 0), + &CPDF_StreamContentParser::Handle_SetColor_Fill}, + {FXBSTR_ID('s', 'c', 'n', 0), + &CPDF_StreamContentParser::Handle_SetColorPS_Fill}, + {FXBSTR_ID('s', 'h', 0, 0), &CPDF_StreamContentParser::Handle_ShadeFill}, + {FXBSTR_ID('v', 0, 0, 0), &CPDF_StreamContentParser::Handle_CurveTo_23}, + {FXBSTR_ID('w', 0, 0, 0), &CPDF_StreamContentParser::Handle_SetLineWidth}, + {FXBSTR_ID('y', 0, 0, 0), &CPDF_StreamContentParser::Handle_CurveTo_13}, + }); +} + +void CPDF_StreamContentParser::OnOperator(const FX_CHAR* op) { + int i = 0; + FX_DWORD opid = 0; + while (i < 4 && op[i]) { + opid = (opid << 8) + op[i]; + i++; + } + while (i < 4) { + opid <<= 8; + i++; + } + + static const OpCodes s_OpCodes = InitializeOpCodes(); + + auto it = s_OpCodes.find(opid); + if (it != s_OpCodes.end()) + (this->*it->second)(); +} + +void CPDF_StreamContentParser::Handle_CloseFillStrokePath() { + if (m_Options.m_bTextOnly) { + return; + } + Handle_ClosePath(); + AddPathObject(FXFILL_WINDING, TRUE); +} + +void CPDF_StreamContentParser::Handle_FillStrokePath() { + if (m_Options.m_bTextOnly) { + return; + } + AddPathObject(FXFILL_WINDING, TRUE); +} + +void CPDF_StreamContentParser::Handle_CloseEOFillStrokePath() { + if (m_Options.m_bTextOnly) { + return; + } + AddPathPoint(m_PathStartX, m_PathStartY, FXPT_LINETO | FXPT_CLOSEFIGURE); + AddPathObject(FXFILL_ALTERNATE, TRUE); +} + +void CPDF_StreamContentParser::Handle_EOFillStrokePath() { + if (m_Options.m_bTextOnly) { + return; + } + AddPathObject(FXFILL_ALTERNATE, TRUE); +} + +void CPDF_StreamContentParser::Handle_BeginMarkedContent_Dictionary() { + if (!m_Options.m_bMarkedContent) { + return; + } + CFX_ByteString tag = GetString(1); + CPDF_Object* pProperty = GetObject(0); + if (!pProperty) { + return; + } + FX_BOOL bDirect = TRUE; + if (pProperty->IsName()) { + pProperty = FindResourceObj("Properties", pProperty->GetString()); + if (!pProperty) + return; + bDirect = FALSE; + } + if (CPDF_Dictionary* pDict = pProperty->AsDictionary()) { + m_CurContentMark.GetModify()->AddMark(tag, pDict, bDirect); + } +} + +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::Handle_BeginMarkedContent() { + if (!m_Options.m_bMarkedContent) { + return; + } + CFX_ByteString tag = GetString(0); + m_CurContentMark.GetModify()->AddMark(tag, NULL, FALSE); +} + +void CPDF_StreamContentParser::Handle_BeginText() { + m_pCurStates->m_TextMatrix.Set(1.0f, 0, 0, 1.0f, 0, 0); + OnChangeTextMatrix(); + m_pCurStates->m_TextX = 0; + m_pCurStates->m_TextY = 0; + m_pCurStates->m_TextLineX = 0; + m_pCurStates->m_TextLineY = 0; +} + +void CPDF_StreamContentParser::Handle_CurveTo_123() { + if (m_Options.m_bTextOnly) { + return; + } + AddPathPoint(GetNumber(5), GetNumber(4), FXPT_BEZIERTO); + AddPathPoint(GetNumber(3), GetNumber(2), FXPT_BEZIERTO); + AddPathPoint(GetNumber(1), GetNumber(0), FXPT_BEZIERTO); +} + +void CPDF_StreamContentParser::Handle_ConcatMatrix() { + FX_FLOAT a2 = GetNumber16(5), b2 = GetNumber16(4), c2 = GetNumber16(3), + d2 = GetNumber16(2); + FX_FLOAT e2 = GetNumber(1), f2 = GetNumber(0); + CFX_Matrix new_matrix(a2, b2, c2, d2, e2, f2); + new_matrix.Concat(m_pCurStates->m_CTM); + m_pCurStates->m_CTM = new_matrix; + OnChangeTextMatrix(); +} + +void CPDF_StreamContentParser::Handle_SetColorSpace_Fill() { + if (m_Options.m_bTextOnly) { + return; + } + CFX_ByteString csname = GetString(0); + CPDF_ColorSpace* pCS = FindColorSpace(csname); + if (!pCS) { + return; + } + m_pCurStates->m_ColorState.GetModify()->m_FillColor.SetColorSpace(pCS); +} + +void CPDF_StreamContentParser::Handle_SetColorSpace_Stroke() { + if (m_Options.m_bTextOnly) { + return; + } + CFX_ByteString csname = GetString(0); + CPDF_ColorSpace* pCS = FindColorSpace(csname); + if (!pCS) { + return; + } + m_pCurStates->m_ColorState.GetModify()->m_StrokeColor.SetColorSpace(pCS); +} + +void CPDF_StreamContentParser::Handle_SetDash() { + if (m_Options.m_bTextOnly) { + return; + } + CPDF_Array* pArray = GetObject(1) ? GetObject(1)->GetArray() : NULL; + if (!pArray) { + return; + } + m_pCurStates->SetLineDash(pArray, GetNumber(0), 1.0f); +} + +void CPDF_StreamContentParser::Handle_SetCharWidth() { + m_Type3Data[0] = GetNumber(1); + m_Type3Data[1] = GetNumber(0); + m_bColored = TRUE; +} + +void CPDF_StreamContentParser::Handle_SetCachedDevice() { + for (int i = 0; i < 6; i++) { + m_Type3Data[i] = GetNumber(5 - i); + } + m_bColored = FALSE; +} + +void CPDF_StreamContentParser::Handle_ExecuteXObject() { + CFX_ByteString name = GetString(0); + if (name == m_LastImageName && m_pLastImage && m_pLastImage->GetStream() && + m_pLastImage->GetStream()->GetObjNum()) { + AddImage(nullptr, m_pLastImage, FALSE); + return; + } + + if (m_Options.m_bTextOnly) { + if (!m_pResources) + return; + + CPDF_Dictionary* pList = m_pResources->GetDictBy("XObject"); + if (!pList && m_pPageResources && m_pResources != m_pPageResources) + pList = m_pPageResources->GetDictBy("XObject"); + if (!pList) + return; + CPDF_Reference* pRes = ToReference(pList->GetElement(name)); + if (!pRes) + return; + + FX_BOOL bForm; + if (m_pDocument->IsFormStream(pRes->GetRefObjNum(), bForm) && !bForm) + return; + } + + CPDF_Stream* pXObject = ToStream(FindResourceObj("XObject", name)); + if (!pXObject) { + m_bResourceMissing = TRUE; + return; + } + + CFX_ByteStringC type = pXObject->GetDict() + ? pXObject->GetDict()->GetConstStringBy("Subtype") + : CFX_ByteStringC(); + if (type == "Image") { + if (m_Options.m_bTextOnly) { + return; + } + CPDF_ImageObject* pObj = AddImage(pXObject, NULL, FALSE); + m_LastImageName = name; + m_pLastImage = pObj->m_pImage; + if (!m_pObjectHolder->HasImageMask()) + m_pObjectHolder->SetHasImageMask(m_pLastImage->IsMask()); + } else if (type == "Form") { + AddForm(pXObject); + } else { + return; + } +} + +void CPDF_StreamContentParser::AddForm(CPDF_Stream* pStream) { + if (!m_Options.m_bSeparateForm) { + CPDF_Dictionary* pResources = pStream->GetDict()->GetDictBy("Resources"); + CFX_Matrix form_matrix = pStream->GetDict()->GetMatrixBy("Matrix"); + form_matrix.Concat(m_pCurStates->m_CTM); + CPDF_Array* pBBox = pStream->GetDict()->GetArrayBy("BBox"); + CFX_FloatRect form_bbox; + CPDF_Path ClipPath; + if (pBBox) { + form_bbox = pStream->GetDict()->GetRectBy("BBox"); + ClipPath.New(); + ClipPath.AppendRect(form_bbox.left, form_bbox.bottom, form_bbox.right, + form_bbox.top); + ClipPath.Transform(&form_matrix); + form_bbox.Transform(&form_matrix); + } + CPDF_StreamContentParser parser(m_pDocument, m_pPageResources, m_pResources, + &m_mtContentToUser, m_pObjectHolder, + pResources, &form_bbox, &m_Options, + m_pCurStates.get(), m_Level + 1); + parser.m_pCurStates->m_CTM = form_matrix; + if (ClipPath.NotNull()) { + parser.m_pCurStates->m_ClipPath.AppendPath(ClipPath, FXFILL_WINDING, + TRUE); + } + CPDF_StreamAcc stream; + stream.LoadAllData(pStream, FALSE); + if (stream.GetSize() == 0) { + return; + } + parser.Parse(stream.GetData(), stream.GetSize(), 0); + return; + } + std::unique_ptr<CPDF_FormObject> pFormObj(new CPDF_FormObject); + pFormObj->m_pForm = + new CPDF_Form(m_pDocument, m_pPageResources, pStream, m_pResources); + pFormObj->m_FormMatrix = m_pCurStates->m_CTM; + pFormObj->m_FormMatrix.Concat(m_mtContentToUser); + CPDF_AllStates status; + status.m_GeneralState = m_pCurStates->m_GeneralState; + status.m_GraphState = m_pCurStates->m_GraphState; + status.m_ColorState = m_pCurStates->m_ColorState; + status.m_TextState = m_pCurStates->m_TextState; + pFormObj->m_pForm->ParseContent(&status, NULL, NULL, &m_Options, m_Level + 1); + if (!m_pObjectHolder->BackgroundAlphaNeeded() && + pFormObj->m_pForm->BackgroundAlphaNeeded()) { + m_pObjectHolder->SetBackgroundAlphaNeeded(TRUE); + } + pFormObj->CalcBoundingBox(); + SetGraphicStates(pFormObj.get(), TRUE, TRUE, TRUE); + m_pObjectHolder->GetPageObjectList()->push_back(std::move(pFormObj)); +} + +CPDF_ImageObject* CPDF_StreamContentParser::AddImage(CPDF_Stream* pStream, + CPDF_Image* pImage, + FX_BOOL bInline) { + if (!pStream && !pImage) { + return NULL; + } + CFX_Matrix ImageMatrix; + ImageMatrix.Copy(m_pCurStates->m_CTM); + ImageMatrix.Concat(m_mtContentToUser); + + std::unique_ptr<CPDF_ImageObject> pImageObj(new CPDF_ImageObject); + if (pImage) { + pImageObj->m_pImage = + m_pDocument->GetPageData()->GetImage(pImage->GetStream()); + } else if (pStream->GetObjNum()) { + pImageObj->m_pImage = m_pDocument->LoadImageF(pStream); + } else { + pImageObj->m_pImage = new CPDF_Image(m_pDocument); + pImageObj->m_pImage->LoadImageF(pStream, bInline); + } + SetGraphicStates(pImageObj.get(), pImageObj->m_pImage->IsMask(), FALSE, + FALSE); + pImageObj->m_Matrix = ImageMatrix; + pImageObj->CalcBoundingBox(); + CPDF_ImageObject* pRet = pImageObj.get(); + m_pObjectHolder->GetPageObjectList()->push_back(std::move(pImageObj)); + return pRet; +} + +void CPDF_StreamContentParser::Handle_MarkPlace_Dictionary() {} + +void CPDF_StreamContentParser::Handle_EndImage() {} + +void CPDF_StreamContentParser::Handle_EndMarkedContent() { + if (!m_Options.m_bMarkedContent) { + return; + } + if (m_CurContentMark.IsNull()) { + return; + } + int count = m_CurContentMark.GetObject()->CountItems(); + if (count == 1) { + m_CurContentMark.SetNull(); + return; + } + m_CurContentMark.GetModify()->DeleteLastMark(); +} + +void CPDF_StreamContentParser::Handle_EndText() { + int count = m_ClipTextList.GetSize(); + if (count == 0) { + return; + } + if (m_pCurStates->m_TextState.GetObject()->m_TextMode < 4) { + for (int i = 0; i < count; i++) { + delete m_ClipTextList.GetAt(i); + } + } else { + m_pCurStates->m_ClipPath.AppendTexts(m_ClipTextList.GetData(), count); + } + m_ClipTextList.RemoveAll(); +} + +void CPDF_StreamContentParser::Handle_FillPath() { + if (m_Options.m_bTextOnly) { + return; + } + AddPathObject(FXFILL_WINDING, FALSE); +} + +void CPDF_StreamContentParser::Handle_FillPathOld() { + if (m_Options.m_bTextOnly) { + return; + } + AddPathObject(FXFILL_WINDING, FALSE); +} + +void CPDF_StreamContentParser::Handle_EOFillPath() { + if (m_Options.m_bTextOnly) { + return; + } + AddPathObject(FXFILL_ALTERNATE, FALSE); +} + +void CPDF_StreamContentParser::Handle_SetGray_Fill() { + FX_FLOAT value = GetNumber(0); + CPDF_ColorSpace* pCS = CPDF_ColorSpace::GetStockCS(PDFCS_DEVICEGRAY); + m_pCurStates->m_ColorState.SetFillColor(pCS, &value, 1); +} + +void CPDF_StreamContentParser::Handle_SetGray_Stroke() { + FX_FLOAT value = GetNumber(0); + CPDF_ColorSpace* pCS = CPDF_ColorSpace::GetStockCS(PDFCS_DEVICEGRAY); + m_pCurStates->m_ColorState.SetStrokeColor(pCS, &value, 1); +} + +void CPDF_StreamContentParser::Handle_SetExtendGraphState() { + CFX_ByteString name = GetString(0); + CPDF_Dictionary* pGS = ToDictionary(FindResourceObj("ExtGState", name)); + if (!pGS) { + m_bResourceMissing = TRUE; + return; + } + m_pCurStates->ProcessExtGS(pGS, this); +} + +void CPDF_StreamContentParser::Handle_ClosePath() { + if (m_Options.m_bTextOnly) { + return; + } + if (m_PathPointCount == 0) { + return; + } + if (m_PathStartX != m_PathCurrentX || m_PathStartY != m_PathCurrentY) { + AddPathPoint(m_PathStartX, m_PathStartY, FXPT_LINETO | FXPT_CLOSEFIGURE); + } else if (m_pPathPoints[m_PathPointCount - 1].m_Flag != FXPT_MOVETO) { + m_pPathPoints[m_PathPointCount - 1].m_Flag |= FXPT_CLOSEFIGURE; + } +} + +void CPDF_StreamContentParser::Handle_SetFlat() { + m_pCurStates->m_GeneralState.GetModify()->m_Flatness = GetNumber(0); +} + +void CPDF_StreamContentParser::Handle_BeginImageData() {} + +void CPDF_StreamContentParser::Handle_SetLineJoin() { + m_pCurStates->m_GraphState.GetModify()->m_LineJoin = + (CFX_GraphStateData::LineJoin)GetInteger(0); +} + +void CPDF_StreamContentParser::Handle_SetLineCap() { + m_pCurStates->m_GraphState.GetModify()->m_LineCap = + (CFX_GraphStateData::LineCap)GetInteger(0); +} + +void CPDF_StreamContentParser::Handle_SetCMYKColor_Fill() { + if (m_ParamCount != 4) + return; + + FX_FLOAT values[4]; + for (int i = 0; i < 4; i++) { + values[i] = GetNumber(3 - i); + } + CPDF_ColorSpace* pCS = CPDF_ColorSpace::GetStockCS(PDFCS_DEVICECMYK); + m_pCurStates->m_ColorState.SetFillColor(pCS, values, 4); +} + +void CPDF_StreamContentParser::Handle_SetCMYKColor_Stroke() { + if (m_ParamCount != 4) + return; + + FX_FLOAT values[4]; + for (int i = 0; i < 4; i++) { + values[i] = GetNumber(3 - i); + } + CPDF_ColorSpace* pCS = CPDF_ColorSpace::GetStockCS(PDFCS_DEVICECMYK); + m_pCurStates->m_ColorState.SetStrokeColor(pCS, values, 4); +} + +void CPDF_StreamContentParser::Handle_LineTo() { + if (m_ParamCount != 2) + return; + + if (m_Options.m_bTextOnly) { + return; + } + AddPathPoint(GetNumber(1), GetNumber(0), FXPT_LINETO); +} + +void CPDF_StreamContentParser::Handle_MoveTo() { + if (m_ParamCount != 2) + return; + + if (m_Options.m_bTextOnly) { + m_pSyntax->SkipPathObject(); + return; + } + AddPathPoint(GetNumber(1), GetNumber(0), FXPT_MOVETO); + ParsePathObject(); +} + +void CPDF_StreamContentParser::Handle_SetMiterLimit() { + m_pCurStates->m_GraphState.GetModify()->m_MiterLimit = GetNumber(0); +} + +void CPDF_StreamContentParser::Handle_MarkPlace() {} + +void CPDF_StreamContentParser::Handle_EndPath() { + if (m_Options.m_bTextOnly) { + return; + } + AddPathObject(0, FALSE); +} + +void CPDF_StreamContentParser::Handle_SaveGraphState() { + std::unique_ptr<CPDF_AllStates> pStates(new CPDF_AllStates); + pStates->Copy(*m_pCurStates); + m_StateStack.push_back(std::move(pStates)); +} + +void CPDF_StreamContentParser::Handle_RestoreGraphState() { + if (m_StateStack.empty()) + return; + std::unique_ptr<CPDF_AllStates> pStates = std::move(m_StateStack.back()); + m_StateStack.pop_back(); + m_pCurStates->Copy(*pStates); +} + +void CPDF_StreamContentParser::Handle_Rectangle() { + if (m_Options.m_bTextOnly) { + return; + } + FX_FLOAT x = GetNumber(3), y = GetNumber(2); + FX_FLOAT w = GetNumber(1), h = GetNumber(0); + AddPathRect(x, y, w, h); +} + +void CPDF_StreamContentParser::AddPathRect(FX_FLOAT x, + FX_FLOAT y, + FX_FLOAT w, + FX_FLOAT h) { + AddPathPoint(x, y, FXPT_MOVETO); + AddPathPoint(x + w, y, FXPT_LINETO); + AddPathPoint(x + w, y + h, FXPT_LINETO); + AddPathPoint(x, y + h, FXPT_LINETO); + AddPathPoint(x, y, FXPT_LINETO | FXPT_CLOSEFIGURE); +} + +void CPDF_StreamContentParser::Handle_SetRGBColor_Fill() { + if (m_ParamCount != 3) + return; + + FX_FLOAT values[3]; + for (int i = 0; i < 3; i++) { + values[i] = GetNumber(2 - i); + } + CPDF_ColorSpace* pCS = CPDF_ColorSpace::GetStockCS(PDFCS_DEVICERGB); + m_pCurStates->m_ColorState.SetFillColor(pCS, values, 3); +} + +void CPDF_StreamContentParser::Handle_SetRGBColor_Stroke() { + if (m_ParamCount != 3) + return; + + FX_FLOAT values[3]; + for (int i = 0; i < 3; i++) { + values[i] = GetNumber(2 - i); + } + CPDF_ColorSpace* pCS = CPDF_ColorSpace::GetStockCS(PDFCS_DEVICERGB); + m_pCurStates->m_ColorState.SetStrokeColor(pCS, values, 3); +} + +void CPDF_StreamContentParser::Handle_SetRenderIntent() {} + +void CPDF_StreamContentParser::Handle_CloseStrokePath() { + if (m_Options.m_bTextOnly) { + return; + } + Handle_ClosePath(); + AddPathObject(0, TRUE); +} + +void CPDF_StreamContentParser::Handle_StrokePath() { + if (m_Options.m_bTextOnly) { + return; + } + AddPathObject(0, TRUE); +} + +void CPDF_StreamContentParser::Handle_SetColor_Fill() { + if (m_Options.m_bTextOnly) { + return; + } + FX_FLOAT values[4]; + int nargs = m_ParamCount; + if (nargs > 4) { + nargs = 4; + } + for (int i = 0; i < nargs; i++) { + values[i] = GetNumber(nargs - i - 1); + } + m_pCurStates->m_ColorState.SetFillColor(NULL, values, nargs); +} + +void CPDF_StreamContentParser::Handle_SetColor_Stroke() { + if (m_Options.m_bTextOnly) { + return; + } + FX_FLOAT values[4]; + int nargs = m_ParamCount; + if (nargs > 4) { + nargs = 4; + } + for (int i = 0; i < nargs; i++) { + values[i] = GetNumber(nargs - i - 1); + } + m_pCurStates->m_ColorState.SetStrokeColor(NULL, values, nargs); +} + +void CPDF_StreamContentParser::Handle_SetColorPS_Fill() { + if (m_Options.m_bTextOnly) { + return; + } + CPDF_Object* pLastParam = GetObject(0); + if (!pLastParam) { + return; + } + int nargs = m_ParamCount; + int nvalues = nargs; + if (pLastParam->IsName()) { + nvalues--; + } + FX_FLOAT* values = NULL; + if (nvalues) { + values = FX_Alloc(FX_FLOAT, nvalues); + for (int i = 0; i < nvalues; i++) { + values[i] = GetNumber(nargs - i - 1); + } + } + if (nvalues != nargs) { + CPDF_Pattern* pPattern = FindPattern(GetString(0), FALSE); + if (pPattern) { + m_pCurStates->m_ColorState.SetFillPattern(pPattern, values, nvalues); + } + } else { + m_pCurStates->m_ColorState.SetFillColor(NULL, values, nvalues); + } + FX_Free(values); +} + +void CPDF_StreamContentParser::Handle_SetColorPS_Stroke() { + if (m_Options.m_bTextOnly) { + return; + } + CPDF_Object* pLastParam = GetObject(0); + if (!pLastParam) { + return; + } + int nargs = m_ParamCount; + int nvalues = nargs; + if (pLastParam->IsName()) + nvalues--; + + FX_FLOAT* values = NULL; + if (nvalues) { + values = FX_Alloc(FX_FLOAT, nvalues); + for (int i = 0; i < nvalues; i++) { + values[i] = GetNumber(nargs - i - 1); + } + } + if (nvalues != nargs) { + CPDF_Pattern* pPattern = FindPattern(GetString(0), FALSE); + if (pPattern) { + m_pCurStates->m_ColorState.SetStrokePattern(pPattern, values, nvalues); + } + } else { + m_pCurStates->m_ColorState.SetStrokeColor(NULL, values, nvalues); + } + FX_Free(values); +} + +CFX_FloatRect GetShadingBBox(CPDF_Stream* pStream, + ShadingType type, + const CFX_Matrix* pMatrix, + CPDF_Function** pFuncs, + int nFuncs, + CPDF_ColorSpace* pCS); + +void CPDF_StreamContentParser::Handle_ShadeFill() { + if (m_Options.m_bTextOnly) { + return; + } + CPDF_Pattern* pPattern = FindPattern(GetString(0), TRUE); + if (!pPattern) { + return; + } + if (pPattern->m_PatternType != CPDF_Pattern::SHADING) { + return; + } + CPDF_ShadingPattern* pShading = static_cast<CPDF_ShadingPattern*>(pPattern); + if (!pShading->m_bShadingObj) { + return; + } + if (!pShading->Load()) { + return; + } + std::unique_ptr<CPDF_ShadingObject> pObj(new CPDF_ShadingObject); + pObj->m_pShading = pShading; + SetGraphicStates(pObj.get(), FALSE, FALSE, FALSE); + pObj->m_Matrix = m_pCurStates->m_CTM; + pObj->m_Matrix.Concat(m_mtContentToUser); + CFX_FloatRect bbox; + if (!pObj->m_ClipPath.IsNull()) { + bbox = pObj->m_ClipPath.GetClipBox(); + } else { + bbox = m_BBox; + } + if (pShading->IsMeshShading()) { + bbox.Intersect(GetShadingBBox(ToStream(pShading->m_pShadingObj), + pShading->m_ShadingType, &pObj->m_Matrix, + pShading->m_pFunctions, pShading->m_nFuncs, + pShading->m_pCS)); + } + pObj->m_Left = bbox.left; + pObj->m_Right = bbox.right; + pObj->m_Top = bbox.top; + pObj->m_Bottom = bbox.bottom; + m_pObjectHolder->GetPageObjectList()->push_back(std::move(pObj)); +} + +void CPDF_StreamContentParser::Handle_SetCharSpace() { + m_pCurStates->m_TextState.GetModify()->m_CharSpace = GetNumber(0); +} + +void CPDF_StreamContentParser::Handle_MoveTextPoint() { + m_pCurStates->m_TextLineX += GetNumber(1); + m_pCurStates->m_TextLineY += GetNumber(0); + m_pCurStates->m_TextX = m_pCurStates->m_TextLineX; + m_pCurStates->m_TextY = m_pCurStates->m_TextLineY; +} + +void CPDF_StreamContentParser::Handle_MoveTextPoint_SetLeading() { + Handle_MoveTextPoint(); + m_pCurStates->m_TextLeading = -GetNumber(0); +} + +void CPDF_StreamContentParser::Handle_SetFont() { + FX_FLOAT fs = GetNumber(0); + if (fs == 0) { + fs = m_DefFontSize; + } + m_pCurStates->m_TextState.GetModify()->m_FontSize = fs; + CPDF_Font* pFont = FindFont(GetString(1)); + if (pFont) { + m_pCurStates->m_TextState.SetFont(pFont); + } +} + +CPDF_Object* CPDF_StreamContentParser::FindResourceObj( + const CFX_ByteStringC& type, + const CFX_ByteString& name) { + if (!m_pResources) { + return NULL; + } + if (m_pResources == m_pPageResources) { + CPDF_Dictionary* pList = m_pResources->GetDictBy(type); + if (!pList) { + return NULL; + } + CPDF_Object* pRes = pList->GetElementValue(name); + return pRes; + } + CPDF_Dictionary* pList = m_pResources->GetDictBy(type); + if (!pList) { + if (!m_pPageResources) { + return NULL; + } + CPDF_Dictionary* pList = m_pPageResources->GetDictBy(type); + if (!pList) { + return NULL; + } + CPDF_Object* pRes = pList->GetElementValue(name); + return pRes; + } + CPDF_Object* pRes = pList->GetElementValue(name); + return pRes; +} + +CPDF_Font* CPDF_StreamContentParser::FindFont(const CFX_ByteString& name) { + CPDF_Dictionary* pFontDict = ToDictionary(FindResourceObj("Font", name)); + if (!pFontDict) { + m_bResourceMissing = TRUE; + return CPDF_Font::GetStockFont(m_pDocument, "Helvetica"); + } + + CPDF_Font* pFont = m_pDocument->LoadFont(pFontDict); + if (pFont && pFont->IsType3Font()) { + pFont->AsType3Font()->SetPageResources(m_pResources); + pFont->AsType3Font()->CheckType3FontMetrics(); + } + return pFont; +} + +CPDF_ColorSpace* CPDF_StreamContentParser::FindColorSpace( + const CFX_ByteString& name) { + if (name == "Pattern") { + return CPDF_ColorSpace::GetStockCS(PDFCS_PATTERN); + } + if (name == "DeviceGray" || name == "DeviceCMYK" || name == "DeviceRGB") { + CFX_ByteString defname = "Default"; + defname += name.Mid(7); + CPDF_Object* pDefObj = FindResourceObj("ColorSpace", defname); + if (!pDefObj) { + if (name == "DeviceGray") { + return CPDF_ColorSpace::GetStockCS(PDFCS_DEVICEGRAY); + } + if (name == "DeviceRGB") { + return CPDF_ColorSpace::GetStockCS(PDFCS_DEVICERGB); + } + return CPDF_ColorSpace::GetStockCS(PDFCS_DEVICECMYK); + } + return m_pDocument->LoadColorSpace(pDefObj); + } + CPDF_Object* pCSObj = FindResourceObj("ColorSpace", name); + if (!pCSObj) { + m_bResourceMissing = TRUE; + return NULL; + } + return m_pDocument->LoadColorSpace(pCSObj); +} + +CPDF_Pattern* CPDF_StreamContentParser::FindPattern(const CFX_ByteString& name, + FX_BOOL bShading) { + CPDF_Object* pPattern = + FindResourceObj(bShading ? "Shading" : "Pattern", name); + if (!pPattern || (!pPattern->IsDictionary() && !pPattern->IsStream())) { + m_bResourceMissing = TRUE; + return NULL; + } + return m_pDocument->LoadPattern(pPattern, bShading, + &m_pCurStates->m_ParentMatrix); +} + +void CPDF_StreamContentParser::ConvertTextSpace(FX_FLOAT& x, FX_FLOAT& y) { + m_pCurStates->m_TextMatrix.Transform(x, y, x, y); + ConvertUserSpace(x, y); +} + +void CPDF_StreamContentParser::ConvertUserSpace(FX_FLOAT& x, FX_FLOAT& y) { + m_pCurStates->m_CTM.Transform(x, y, x, y); + m_mtContentToUser.Transform(x, y, x, y); +} + +void CPDF_StreamContentParser::AddTextObject(CFX_ByteString* pStrs, + FX_FLOAT fInitKerning, + FX_FLOAT* pKerning, + int nsegs) { + CPDF_Font* pFont = m_pCurStates->m_TextState.GetFont(); + if (!pFont) { + return; + } + if (fInitKerning != 0) { + if (!pFont->IsVertWriting()) { + m_pCurStates->m_TextX -= + (fInitKerning * m_pCurStates->m_TextState.GetFontSize()) / 1000; + } else { + m_pCurStates->m_TextY -= + (fInitKerning * m_pCurStates->m_TextState.GetFontSize()) / 1000; + } + } + if (nsegs == 0) { + return; + } + int textmode; + if (pFont->IsType3Font()) { + textmode = 0; + } else { + textmode = m_pCurStates->m_TextState.GetObject()->m_TextMode; + } + { + std::unique_ptr<CPDF_TextObject> pText(new CPDF_TextObject); + m_pLastTextObject = pText.get(); + SetGraphicStates(m_pLastTextObject, TRUE, TRUE, TRUE); + if (textmode && textmode != 3 && textmode != 4 && textmode != 7) { + FX_FLOAT* pCTM = pText->m_TextState.GetModify()->m_CTM; + pCTM[0] = m_pCurStates->m_CTM.a; + pCTM[1] = m_pCurStates->m_CTM.c; + pCTM[2] = m_pCurStates->m_CTM.b; + pCTM[3] = m_pCurStates->m_CTM.d; + } + pText->SetSegments(pStrs, pKerning, nsegs); + pText->m_PosX = m_pCurStates->m_TextX; + pText->m_PosY = m_pCurStates->m_TextY + m_pCurStates->m_TextRise; + ConvertTextSpace(pText->m_PosX, pText->m_PosY); + FX_FLOAT x_advance; + FX_FLOAT y_advance; + pText->CalcPositionData(&x_advance, &y_advance, + m_pCurStates->m_TextHorzScale, m_Level); + m_pCurStates->m_TextX += x_advance; + m_pCurStates->m_TextY += y_advance; + if (textmode > 3) + m_ClipTextList.Add(pText->Clone()); + m_pObjectHolder->GetPageObjectList()->push_back(std::move(pText)); + } + if (pKerning && pKerning[nsegs - 1] != 0) { + if (!pFont->IsVertWriting()) { + m_pCurStates->m_TextX -= + (pKerning[nsegs - 1] * m_pCurStates->m_TextState.GetFontSize()) / + 1000; + } else { + m_pCurStates->m_TextY -= + (pKerning[nsegs - 1] * m_pCurStates->m_TextState.GetFontSize()) / + 1000; + } + } +} + +void CPDF_StreamContentParser::Handle_ShowText() { + CFX_ByteString str = GetString(0); + if (str.IsEmpty()) { + return; + } + AddTextObject(&str, 0, NULL, 1); +} + +void CPDF_StreamContentParser::Handle_ShowText_Positioning() { + CPDF_Array* pArray = GetObject(0) ? GetObject(0)->GetArray() : NULL; + if (!pArray) { + return; + } + int n = pArray->GetCount(); + int nsegs = 0; + for (int i = 0; i < n; i++) { + if (pArray->GetElementValue(i)->IsString()) + nsegs++; + } + if (nsegs == 0) { + for (int i = 0; i < n; i++) { + m_pCurStates->m_TextX -= + (pArray->GetNumberAt(i) * m_pCurStates->m_TextState.GetFontSize()) / + 1000; + } + return; + } + CFX_ByteString* pStrs = new CFX_ByteString[nsegs]; + FX_FLOAT* pKerning = FX_Alloc(FX_FLOAT, nsegs); + int iSegment = 0; + FX_FLOAT fInitKerning = 0; + for (int i = 0; i < n; i++) { + CPDF_Object* pObj = pArray->GetElementValue(i); + if (pObj->IsString()) { + CFX_ByteString str = pObj->GetString(); + if (str.IsEmpty()) { + continue; + } + pStrs[iSegment] = str; + pKerning[iSegment++] = 0; + } else { + FX_FLOAT num = pObj ? pObj->GetNumber() : 0; + if (iSegment == 0) { + fInitKerning += num; + } else { + pKerning[iSegment - 1] += num; + } + } + } + AddTextObject(pStrs, fInitKerning, pKerning, iSegment); + delete[] pStrs; + FX_Free(pKerning); +} + +void CPDF_StreamContentParser::Handle_SetTextLeading() { + m_pCurStates->m_TextLeading = GetNumber(0); +} + +void CPDF_StreamContentParser::Handle_SetTextMatrix() { + m_pCurStates->m_TextMatrix.Set(GetNumber16(5), GetNumber16(4), GetNumber16(3), + GetNumber16(2), GetNumber(1), GetNumber(0)); + OnChangeTextMatrix(); + m_pCurStates->m_TextX = 0; + m_pCurStates->m_TextY = 0; + m_pCurStates->m_TextLineX = 0; + m_pCurStates->m_TextLineY = 0; +} + +void CPDF_StreamContentParser::OnChangeTextMatrix() { + CFX_Matrix text_matrix(m_pCurStates->m_TextHorzScale, 0.0f, 0.0f, 1.0f, 0.0f, + 0.0f); + text_matrix.Concat(m_pCurStates->m_TextMatrix); + text_matrix.Concat(m_pCurStates->m_CTM); + text_matrix.Concat(m_mtContentToUser); + FX_FLOAT* pTextMatrix = m_pCurStates->m_TextState.GetModify()->m_Matrix; + pTextMatrix[0] = text_matrix.a; + pTextMatrix[1] = text_matrix.c; + pTextMatrix[2] = text_matrix.b; + pTextMatrix[3] = text_matrix.d; +} + +void CPDF_StreamContentParser::Handle_SetTextRenderMode() { + int mode = GetInteger(0); + if (mode < 0 || mode > 7) { + return; + } + m_pCurStates->m_TextState.GetModify()->m_TextMode = mode; +} + +void CPDF_StreamContentParser::Handle_SetTextRise() { + m_pCurStates->m_TextRise = GetNumber(0); +} + +void CPDF_StreamContentParser::Handle_SetWordSpace() { + m_pCurStates->m_TextState.GetModify()->m_WordSpace = GetNumber(0); +} + +void CPDF_StreamContentParser::Handle_SetHorzScale() { + if (m_ParamCount != 1) { + return; + } + m_pCurStates->m_TextHorzScale = GetNumber(0) / 100; + OnChangeTextMatrix(); +} + +void CPDF_StreamContentParser::Handle_MoveToNextLine() { + m_pCurStates->m_TextLineY -= m_pCurStates->m_TextLeading; + m_pCurStates->m_TextX = m_pCurStates->m_TextLineX; + m_pCurStates->m_TextY = m_pCurStates->m_TextLineY; +} + +void CPDF_StreamContentParser::Handle_CurveTo_23() { + if (m_Options.m_bTextOnly) { + return; + } + AddPathPoint(m_PathCurrentX, m_PathCurrentY, FXPT_BEZIERTO); + AddPathPoint(GetNumber(3), GetNumber(2), FXPT_BEZIERTO); + AddPathPoint(GetNumber(1), GetNumber(0), FXPT_BEZIERTO); +} + +void CPDF_StreamContentParser::Handle_SetLineWidth() { + FX_FLOAT width = GetNumber(0); + m_pCurStates->m_GraphState.GetModify()->m_LineWidth = width; +} + +void CPDF_StreamContentParser::Handle_Clip() { + m_PathClipType = FXFILL_WINDING; +} + +void CPDF_StreamContentParser::Handle_EOClip() { + m_PathClipType = FXFILL_ALTERNATE; +} + +void CPDF_StreamContentParser::Handle_CurveTo_13() { + if (m_Options.m_bTextOnly) { + return; + } + AddPathPoint(GetNumber(3), GetNumber(2), FXPT_BEZIERTO); + AddPathPoint(GetNumber(1), GetNumber(0), FXPT_BEZIERTO); + AddPathPoint(GetNumber(1), GetNumber(0), FXPT_BEZIERTO); +} + +void CPDF_StreamContentParser::Handle_NextLineShowText() { + Handle_MoveToNextLine(); + Handle_ShowText(); +} + +void CPDF_StreamContentParser::Handle_NextLineShowText_Space() { + m_pCurStates->m_TextState.GetModify()->m_WordSpace = GetNumber(2); + m_pCurStates->m_TextState.GetModify()->m_CharSpace = GetNumber(1); + Handle_NextLineShowText(); +} + +void CPDF_StreamContentParser::Handle_Invalid() {} + +void CPDF_StreamContentParser::AddPathPoint(FX_FLOAT x, FX_FLOAT y, int flag) { + m_PathCurrentX = x; + m_PathCurrentY = y; + if (flag == FXPT_MOVETO) { + m_PathStartX = x; + m_PathStartY = y; + if (m_PathPointCount && + m_pPathPoints[m_PathPointCount - 1].m_Flag == FXPT_MOVETO) { + m_pPathPoints[m_PathPointCount - 1].m_PointX = x; + m_pPathPoints[m_PathPointCount - 1].m_PointY = y; + return; + } + } else if (m_PathPointCount == 0) { + return; + } + m_PathPointCount++; + if (m_PathPointCount > m_PathAllocSize) { + int newsize = m_PathPointCount + 256; + FX_PATHPOINT* pNewPoints = FX_Alloc(FX_PATHPOINT, newsize); + if (m_PathAllocSize) { + FXSYS_memcpy(pNewPoints, m_pPathPoints, + m_PathAllocSize * sizeof(FX_PATHPOINT)); + FX_Free(m_pPathPoints); + } + m_pPathPoints = pNewPoints; + m_PathAllocSize = newsize; + } + m_pPathPoints[m_PathPointCount - 1].m_Flag = flag; + m_pPathPoints[m_PathPointCount - 1].m_PointX = x; + m_pPathPoints[m_PathPointCount - 1].m_PointY = y; +} + +void CPDF_StreamContentParser::AddPathObject(int FillType, FX_BOOL bStroke) { + int PathPointCount = m_PathPointCount, PathClipType = m_PathClipType; + m_PathPointCount = 0; + m_PathClipType = 0; + if (PathPointCount <= 1) { + if (PathPointCount && PathClipType) { + CPDF_Path path; + path.New()->AppendRect(0, 0, 0, 0); + m_pCurStates->m_ClipPath.AppendPath(path, FXFILL_WINDING, TRUE); + } + return; + } + if (PathPointCount && + m_pPathPoints[PathPointCount - 1].m_Flag == FXPT_MOVETO) { + PathPointCount--; + } + CPDF_Path Path; + CFX_PathData* pPathData = Path.New(); + pPathData->SetPointCount(PathPointCount); + FXSYS_memcpy(pPathData->GetPoints(), m_pPathPoints, + sizeof(FX_PATHPOINT) * PathPointCount); + CFX_Matrix matrix = m_pCurStates->m_CTM; + matrix.Concat(m_mtContentToUser); + if (bStroke || FillType) { + std::unique_ptr<CPDF_PathObject> pPathObj(new CPDF_PathObject); + pPathObj->m_bStroke = bStroke; + pPathObj->m_FillType = FillType; + pPathObj->m_Path = Path; + pPathObj->m_Matrix = matrix; + SetGraphicStates(pPathObj.get(), TRUE, FALSE, TRUE); + pPathObj->CalcBoundingBox(); + m_pObjectHolder->GetPageObjectList()->push_back(std::move(pPathObj)); + } + if (PathClipType) { + if (!matrix.IsIdentity()) { + Path.Transform(&matrix); + matrix.SetIdentity(); + } + m_pCurStates->m_ClipPath.AppendPath(Path, PathClipType, TRUE); + } +} + +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_pObjectHolder->GetPageObjectList()->size(); + CPDF_StreamParser syntax(pData, dwSize); + CPDF_StreamParserAutoClearer auto_clearer(&m_pSyntax, &syntax); + while (1) { + FX_DWORD cost = m_pObjectHolder->GetPageObjectList()->size() - 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::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; + } + } +} + +void PDF_ReplaceAbbr(CPDF_Object* pObj) { + switch (pObj->GetType()) { + case CPDF_Object::DICTIONARY: { + CPDF_Dictionary* pDict = pObj->AsDictionary(); + std::vector<AbbrReplacementOp> replacements; + for (const auto& it : *pDict) { + CFX_ByteString key = it.first; + CPDF_Object* value = it.second; + CFX_ByteStringC fullname = PDF_FindFullName( + PDF_InlineKeyAbbr, FX_ArraySize(PDF_InlineKeyAbbr), key); + if (!fullname.IsEmpty()) { + AbbrReplacementOp op; + op.is_replace_key = true; + op.key = key; + op.replacement = fullname; + replacements.push_back(op); + key = fullname; + } + + if (value->IsName()) { + CFX_ByteString name = value->GetString(); + fullname = PDF_FindFullName(PDF_InlineValueAbbr, + FX_ArraySize(PDF_InlineValueAbbr), name); + if (!fullname.IsEmpty()) { + AbbrReplacementOp op; + op.is_replace_key = false; + op.key = key; + op.replacement = fullname; + replacements.push_back(op); + } + } else { + PDF_ReplaceAbbr(value); + } + } + for (const auto& op : replacements) { + if (op.is_replace_key) + pDict->ReplaceKey(op.key, op.replacement); + else + pDict->SetAtName(op.key, op.replacement); + } + break; + } + case CPDF_Object::ARRAY: { + CPDF_Array* pArray = pObj->AsArray(); + for (FX_DWORD i = 0; i < pArray->GetCount(); i++) { + CPDF_Object* pElement = pArray->GetElement(i); + if (pElement->IsName()) { + CFX_ByteString name = pElement->GetString(); + CFX_ByteStringC fullname = PDF_FindFullName( + PDF_InlineValueAbbr, FX_ArraySize(PDF_InlineValueAbbr), name); + if (!fullname.IsEmpty()) { + pArray->SetAt(i, new CPDF_Name(fullname)); + } + } else { + PDF_ReplaceAbbr(pElement); + } + } + break; + } + default: + break; + } +} |