From 5110c4743751145c4ae1934cd1d83bc6c55bb43f Mon Sep 17 00:00:00 2001 From: John Abd-El-Malek Date: Sat, 17 May 2014 22:33:34 -0700 Subject: Initial commit. --- core/src/fpdfapi/fpdf_page/fpdf_page_parser.cpp | 1681 +++++++++++++++++++++++ 1 file changed, 1681 insertions(+) create mode 100644 core/src/fpdfapi/fpdf_page/fpdf_page_parser.cpp (limited to 'core/src/fpdfapi/fpdf_page/fpdf_page_parser.cpp') diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page_parser.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page_parser.cpp new file mode 100644 index 0000000000..40f6d04212 --- /dev/null +++ b/core/src/fpdfapi/fpdf_page/fpdf_page_parser.cpp @@ -0,0 +1,1681 @@ +// 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 "../../../include/fpdfapi/fpdf_page.h" +#include "../../../include/fpdfapi/fpdf_module.h" +#include "../../../include/fpdfapi/fpdf_serial.h" +#include "pageint.h" +#define REQUIRE_PARAMS(count) if (m_ParamCount != count) { m_bAbort = TRUE; return; } +CPDF_StreamContentParser::CPDF_StreamContentParser() +{ + m_DefFontSize = 0; + m_pCurStates = NULL; + m_pLastTextObject = NULL; + m_pPathPoints = NULL; + m_PathClipType = 0; + m_PathPointCount = m_PathAllocSize = 0; + m_PathCurrentX = m_PathCurrentY = 0.0f; + m_bResourceMissing = FALSE; + m_bColored = FALSE; + FXSYS_memset32(m_Type3Data, 0, sizeof(FX_FLOAT) * 6); + m_ParamCount = 0; + m_ParamStartPos = 0; + m_bAbort = FALSE; + m_pLastImageDict = NULL; + m_pLastCloneImageDict = NULL; + m_pLastImage = NULL; + m_bReleaseLastDict = TRUE; + m_pParentResources = NULL; +#ifdef _FPDFAPI_MINI_ + m_pObjectState = NULL; + m_pObjectStack = NULL; + m_pWordBuf = NULL; + m_pDictName = NULL; + m_pStreamBuf = NULL; + m_WordState = 0; + m_ObjectSize = 0; +#endif +} +FX_BOOL CPDF_StreamContentParser::Initialize() +{ +#ifdef _FPDFAPI_MINI_ + m_pObjectState = FX_Alloc(FX_BOOL, _FPDF_MAX_OBJECT_STACK_SIZE_); + FXSYS_memset32(m_pObjectState, 0, _FPDF_MAX_OBJECT_STACK_SIZE_ * sizeof(FX_BOOL)); + m_pObjectStack = FX_Alloc(CPDF_Object*, _FPDF_MAX_OBJECT_STACK_SIZE_); + FXSYS_memset32(m_pObjectStack, 0, _FPDF_MAX_OBJECT_STACK_SIZE_ * sizeof(CPDF_Object*)); + m_pWordBuf = FX_Alloc(FX_BYTE, 256); + FXSYS_memset32(m_pWordBuf, 0, 256 * sizeof(FX_BYTE)); + m_pDictName = FX_Alloc(FX_BYTE, 256); + FXSYS_memset32(m_pDictName, 0, 256 * sizeof(FX_BYTE)); + m_pStreamBuf = FX_Alloc(FX_BYTE, STREAM_PARSE_BUFSIZE); + FXSYS_memset32(m_pStreamBuf, 0, STREAM_PARSE_BUFSIZE * sizeof(FX_BYTE)); + m_StringBuf.EstimateSize(1024); + m_ObjectSize = 0; + m_ImageSrcBuf.EstimateSize(STREAM_PARSE_BUFSIZE); +#endif + return TRUE; +} +CPDF_StreamContentParser::~CPDF_StreamContentParser() +{ + ClearAllParams(); + int i = 0; + for (i = 0; i < m_StateStack.GetSize(); i ++) { + delete (CPDF_AllStates*)m_StateStack[i]; + } + if (m_pPathPoints) { + FX_Free(m_pPathPoints); + } + if (m_pCurStates) { + delete m_pCurStates; + } + if (m_pLastImageDict) { + m_pLastImageDict->Release(); + } + if (m_pLastCloneImageDict) { + m_pLastCloneImageDict->Release(); + } +#ifdef _FPDFAPI_MINI_ + for (i = 0; i < (int)m_ObjectSize; ++i) { + if (!m_pObjectState[i]) { + m_pObjectStack[i]->Release(); + } + } + FX_Free(m_pObjectStack); + FX_Free(m_pObjectState); + FX_Free(m_pStreamBuf); + FX_Free(m_pWordBuf); + FX_Free(m_pDictName); +#endif +} +void CPDF_StreamContentParser::PrepareParse(CPDF_Document* pDocument, + CPDF_Dictionary* pPageResources, CPDF_Dictionary* pParentResources, CFX_AffineMatrix* pmtContentToUser, CPDF_PageObjects* pObjList, + CPDF_Dictionary* pResources, CPDF_Rect* pBBox, CPDF_ParseOptions* pOptions, + CPDF_AllStates* pStates, int level) +{ + for (int i = 0; i < 6; i ++) { + m_Type3Data[i] = 0; + } + m_pDocument = pDocument; + m_pPageResources = pPageResources; + m_pParentResources = pParentResources; + if (pmtContentToUser) { + m_mtContentToUser = *pmtContentToUser; + } + if (pOptions) { + m_Options = *pOptions; + } + m_pObjectList = pObjList; + m_pResources = pResources; + if (pResources == NULL) { + m_pResources = m_pParentResources; + } + if (m_pResources == NULL) { + m_pResources = pPageResources; + } + if (pBBox) { + m_BBox = *pBBox; + } + m_Level = level; + m_pCurStates = FX_NEW CPDF_AllStates; + 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(); + } +#ifdef _FPDFAPI_MINI_ + FXSYS_memset32(m_pObjectState, 0, _FPDF_MAX_OBJECT_STACK_SIZE_ * sizeof(FX_BOOL)); +#endif +} +int CPDF_StreamContentParser::GetNextParamPos() +{ + if (m_ParamCount == PARAM_BUF_SIZE) { + m_ParamStartPos ++; + if (m_ParamStartPos == PARAM_BUF_SIZE) { + m_ParamStartPos = 0; + } + if (m_ParamBuf1[m_ParamStartPos].m_Type == 0) { + m_ParamBuf1[m_ParamStartPos].m_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(FX_LPCSTR name, int len) +{ + int index = GetNextParamPos(); + if (len > 32) { + m_ParamBuf1[index].m_Type = 0; + m_ParamBuf1[index].m_pObject = CPDF_Name::Create(PDF_NameDecode(CFX_ByteStringC(name, len))); + } else { + m_ParamBuf1[index].m_Type = PDFOBJ_NAME; + if (FXSYS_memchr(name, '#', len) == NULL) { + FXSYS_memcpy32(m_ParamBuf1[index].m_Name.m_Buffer, name, len); + m_ParamBuf1[index].m_Name.m_Len = len; + } else { + CFX_ByteString str = PDF_NameDecode(CFX_ByteStringC(name, len)); + FXSYS_memcpy32(m_ParamBuf1[index].m_Name.m_Buffer, (FX_LPCSTR)str, str.GetLength()); + m_ParamBuf1[index].m_Name.m_Len = str.GetLength(); + } + } +} +void CPDF_StreamContentParser::AddNumberParam(FX_LPCSTR str, int len) +{ + int index = GetNextParamPos(); + m_ParamBuf1[index].m_Type = PDFOBJ_NUMBER; + FX_atonum(CFX_ByteStringC(str, len), m_ParamBuf1[index].m_Number.m_bInteger, + &m_ParamBuf1[index].m_Number.m_Integer); +} +void CPDF_StreamContentParser::AddObjectParam(CPDF_Object* pObj) +{ + int index = GetNextParamPos(); + m_ParamBuf1[index].m_Type = 0; + m_ParamBuf1[index].m_pObject = pObj; +} +void CPDF_StreamContentParser::ClearAllParams() +{ + FX_DWORD index = m_ParamStartPos; + for (FX_DWORD i = 0; i < m_ParamCount; i ++) { + if (m_ParamBuf1[index].m_Type == 0) { + m_ParamBuf1[index].m_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_ParamBuf1[real_index]; + if (param.m_Type == PDFOBJ_NUMBER) { + CPDF_Number* pNumber = CPDF_Number::Create(param.m_Number.m_bInteger, ¶m.m_Number.m_Integer); + param.m_Type = 0; + param.m_pObject = pNumber; + return pNumber; + } + if (param.m_Type == PDFOBJ_NAME) { + CPDF_Name* pName = CPDF_Name::Create(CFX_ByteString(param.m_Name.m_Buffer, param.m_Name.m_Len)); + param.m_Type = 0; + param.m_pObject = pName; + return pName; + } + if (param.m_Type == 0) { + 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_ParamBuf1[real_index]; + if (param.m_Type == PDFOBJ_NAME) { + return CFX_ByteString(param.m_Name.m_Buffer, param.m_Name.m_Len); + } + if (param.m_Type == 0) { + 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_ParamBuf1[real_index]; + if (param.m_Type == PDFOBJ_NUMBER) { + return param.m_Number.m_bInteger ? (FX_FLOAT)param.m_Number.m_Integer : param.m_Number.m_Float; + } + if (param.m_Type == 0) { + 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; + } +} +const struct _OpCode { + FX_DWORD m_OpId; + void (CPDF_StreamContentParser::*m_OpHandler)(); +} g_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('B', 'X', 0, 0), &CPDF_StreamContentParser::Handle_BeginSectionUndefined}, + {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('E', 'X', 0, 0), &CPDF_StreamContentParser::Handle_EndSectionUndefined}, + {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}, +}; +FX_BOOL CPDF_StreamContentParser::OnOperator(FX_LPCSTR 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 ++; + }; + int low = 0, high = sizeof g_OpCodes / sizeof(struct _OpCode) - 1; + while (low <= high) { + int middle = (low + high) / 2; + int compare = opid - g_OpCodes[middle].m_OpId; + if (compare == 0) { + (this->*g_OpCodes[middle].m_OpHandler)(); + return TRUE; + } else if (compare < 0) { + high = middle - 1; + } else { + low = middle + 1; + } + } + return m_CompatCount != 0; +} +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 == NULL) { + return; + } + FX_BOOL bDirect = TRUE; + if (pProperty->GetType() == PDFOBJ_NAME) { + pProperty = FindResourceObj(FX_BSTRC("Properties"), pProperty->GetString()); + if (pProperty == NULL) { + return; + } + bDirect = FALSE; + } + if (pProperty->GetType() != PDFOBJ_DICTIONARY) { + return; + } + m_CurContentMark.GetModify()->AddMark(tag, (CPDF_Dictionary*)pProperty, bDirect); +} +void CPDF_StreamContentParser::Handle_BeginMarkedContent() +{ + if (!m_Options.m_bMarkedContent) { + return; + } + CFX_ByteString tag = GetString(0); + m_CurContentMark.GetModify()->AddMark(tag, NULL, FALSE); +} +struct _FX_BSTR { + FX_LPCSTR m_Ptr; + int m_Size; +}; +#define _FX_BSTRC(str) {str, sizeof(str)-1} +const _FX_BSTR _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 _FX_BSTR _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"), +}; +static CFX_ByteStringC _PDF_FindFullName(const _FX_BSTR* table, int count, FX_BSTR abbr) +{ + int i = 0; + while (i < count) { + if (abbr.GetLength() == table[i + 1].m_Size && FXSYS_memcmp32(abbr.GetPtr(), table[i + 1].m_Ptr, abbr.GetLength()) == 0) { + return CFX_ByteStringC(table[i].m_Ptr, table[i].m_Size); + } + i += 2; + } + return CFX_ByteStringC(); +} +void _PDF_ReplaceAbbr(CPDF_Object* pObj) +{ + switch (pObj->GetType()) { + case PDFOBJ_DICTIONARY: { + CPDF_Dictionary* pDict = (CPDF_Dictionary*)pObj; + FX_POSITION pos = pDict->GetStartPos(); + while (pos) { + CFX_ByteString key; + CPDF_Object* value = pDict->GetNextElement(pos, key); + CFX_ByteStringC fullname = _PDF_FindFullName(_PDF_InlineKeyAbbr, + sizeof _PDF_InlineKeyAbbr / sizeof(_FX_BSTR), key); + if (!fullname.IsEmpty()) { + pDict->ReplaceKey(key, fullname); + key = fullname; + } + if (value->GetType() == PDFOBJ_NAME) { + CFX_ByteString name = value->GetString(); + fullname = _PDF_FindFullName(_PDF_InlineValueAbbr, + sizeof _PDF_InlineValueAbbr / sizeof(_FX_BSTR), name); + if (!fullname.IsEmpty()) { + pDict->SetAtName(key, fullname); + } + } else { + _PDF_ReplaceAbbr(value); + } + } + break; + } + case PDFOBJ_ARRAY: { + CPDF_Array* pArray = (CPDF_Array*)pObj; + for (FX_DWORD i = 0; i < pArray->GetCount(); i ++) { + CPDF_Object* pElement = pArray->GetElement(i); + if (pElement->GetType() == PDFOBJ_NAME) { + CFX_ByteString name = pElement->GetString(); + CFX_ByteStringC fullname = _PDF_FindFullName(_PDF_InlineValueAbbr, + sizeof _PDF_InlineValueAbbr / sizeof(_FX_BSTR), name); + if (!fullname.IsEmpty()) { + pArray->SetAt(i, CPDF_Name::Create(fullname)); + } + } else { + _PDF_ReplaceAbbr(pElement); + } + } + break; + } + } +} +static CFX_ByteStringC _PDF_FindAbbrName(const _FX_BSTR* table, int count, FX_BSTR fullName) +{ + int i = 0; + while (i < count) { + if (fullName.GetLength() == table[i].m_Size && FXSYS_memcmp32(fullName.GetPtr(), table[i].m_Ptr, fullName.GetLength()) == 0) { + return CFX_ByteStringC(table[i + 1].m_Ptr, table[i + 1].m_Size); + } + i += 2; + } + return CFX_ByteStringC(); +} +void _PDF_ReplaceFull(CPDF_Object* pObj) +{ + switch (pObj->GetType()) { + case PDFOBJ_DICTIONARY: { + CPDF_Dictionary* pDict = (CPDF_Dictionary*)pObj; + FX_POSITION pos = pDict->GetStartPos(); + while (pos) { + CFX_ByteString key; + CPDF_Object* value = pDict->GetNextElement(pos, key); + CFX_ByteStringC abbrName = _PDF_FindAbbrName(_PDF_InlineKeyAbbr, + sizeof(_PDF_InlineKeyAbbr) / sizeof(_FX_BSTR), key); + if (!abbrName.IsEmpty()) { + pDict->ReplaceKey(key, abbrName); + key = abbrName; + } + if (value->GetType() == PDFOBJ_NAME) { + CFX_ByteString name = value->GetString(); + abbrName = _PDF_FindAbbrName(_PDF_InlineValueAbbr, + sizeof(_PDF_InlineValueAbbr) / sizeof(_FX_BSTR), name); + if (!abbrName.IsEmpty()) { + pDict->SetAtName(key, abbrName); + } + } else { + _PDF_ReplaceFull(value); + } + } + break; + } + case PDFOBJ_ARRAY: { + CPDF_Array* pArray = (CPDF_Array*)pObj; + for (FX_DWORD i = 0; i < pArray->GetCount(); i ++) { + CPDF_Object* pElement = pArray->GetElement(i); + if (pElement->GetType() == PDFOBJ_NAME) { + CFX_ByteString name = pElement->GetString(); + CFX_ByteStringC abbrName = _PDF_FindAbbrName(_PDF_InlineValueAbbr, + sizeof _PDF_InlineValueAbbr / sizeof(_FX_BSTR), name); + if (!abbrName.IsEmpty()) { + pArray->SetAt(i, CPDF_Name::Create(abbrName)); + } + } else { + _PDF_ReplaceFull(pElement); + } + } + break; + } + } +} +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_BeginSectionUndefined() +{ + m_CompatCount ++; +} +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); + FX_FLOAT old_width_scale = m_pCurStates->m_CTM.GetXUnit(); + CFX_AffineMatrix new_matrix(a2, b2, c2, d2, e2, f2); + new_matrix.Concat(m_pCurStates->m_CTM); + m_pCurStates->m_CTM = new_matrix; + FX_FLOAT new_width_scale = m_pCurStates->m_CTM.GetXUnit(); + 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 == NULL) { + 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 == NULL) { + 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)->GetArray(); + if (pArray == NULL) { + 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()) { +#if defined(_FPDFAPI_MINI_) && !defined(_FXCORE_FEATURE_ALL_) + AddDuplicateImage(); +#else + AddImage(NULL, m_pLastImage, FALSE); +#endif + return; + } + if (m_Options.m_bTextOnly) { + CPDF_Object* pRes = NULL; + if (m_pResources == NULL) { + return; + } + if (m_pResources == m_pPageResources) { + CPDF_Dictionary* pList = m_pResources->GetDict(FX_BSTRC("XObject")); + if (pList == NULL) { + return; + } + pRes = pList->GetElement(name); + if (pRes == NULL || pRes->GetType() != PDFOBJ_REFERENCE) { + return; + } + } else { + CPDF_Dictionary* pList = m_pResources->GetDict(FX_BSTRC("XObject")); + if (pList == NULL) { + if (m_pPageResources == NULL) { + return; + } + CPDF_Dictionary* pList = m_pPageResources->GetDict(FX_BSTRC("XObject")); + if (pList == NULL) { + return; + } + pRes = pList->GetElement(name); + if (pRes == NULL || pRes->GetType() != PDFOBJ_REFERENCE) { + return; + } + } else { + pRes = pList->GetElement(name); + if (pRes == NULL || pRes->GetType() != PDFOBJ_REFERENCE) { + return; + } + } + } + FX_BOOL bForm; + if (m_pDocument->IsFormStream(((CPDF_Reference*)pRes)->GetRefObjNum(), bForm) && !bForm) { + return; + } + } + CPDF_Stream* pXObject = (CPDF_Stream*)FindResourceObj(FX_BSTRC("XObject"), name); + if (pXObject == NULL || pXObject->GetType() != PDFOBJ_STREAM) { + m_bResourceMissing = TRUE; + return; + } + CFX_ByteStringC type = pXObject->GetDict()->GetConstString(FX_BSTRC("Subtype")); + if (type == FX_BSTRC("Image")) { + if (m_Options.m_bTextOnly) { + return; + } + CPDF_ImageObject* pObj = AddImage(pXObject, NULL, FALSE); + m_LastImageName = name; + m_pLastImage = pObj->m_pImage; + } else if (type == FX_BSTRC("Form")) { + AddForm(pXObject); + } else { + return; + } +} +void CPDF_StreamContentParser::AddForm(CPDF_Stream* pStream) +{ +#if !defined(_FPDFAPI_MINI_) || defined(_FXCORE_FEATURE_ALL_) + if (!m_Options.m_bSeparateForm) { + CPDF_Dictionary* pResources = pStream->GetDict()->GetDict(FX_BSTRC("Resources")); + CFX_AffineMatrix form_matrix = pStream->GetDict()->GetMatrix(FX_BSTRC("Matrix")); + form_matrix.Concat(m_pCurStates->m_CTM); + CPDF_Array* pBBox = pStream->GetDict()->GetArray(FX_BSTRC("BBox")); + CFX_FloatRect form_bbox; + CPDF_Path ClipPath; + if (pBBox) { + form_bbox = pStream->GetDict()->GetRect(FX_BSTRC("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; + parser.Initialize(); + parser.PrepareParse(m_pDocument, m_pPageResources, m_pResources, &m_mtContentToUser, + m_pObjectList, pResources, &form_bbox, &m_Options, m_pCurStates, 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; + } +#ifdef _FPDFAPI_MINI_ + parser.InputData(stream.GetData(), stream.GetSize()); + parser.Finish(); +#else + parser.Parse(stream.GetData(), stream.GetSize(), 0); +#endif + return; + } +#endif + CPDF_FormObject* pFormObj = FX_NEW CPDF_FormObject; + pFormObj->m_pForm = FX_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_pObjectList->m_bBackgroundAlphaNeeded && pFormObj->m_pForm->m_bBackgroundAlphaNeeded) { + m_pObjectList->m_bBackgroundAlphaNeeded = TRUE; + } + pFormObj->CalcBoundingBox(); + SetGraphicStates(pFormObj, TRUE, TRUE, TRUE); + m_pObjectList->m_ObjectList.AddTail(pFormObj); +} +#if defined(_FPDFAPI_MINI_) && !defined(_FXCORE_FEATURE_ALL_) +void CPDF_StreamContentParser::AddDuplicateImage() +{ + FX_POSITION tailpos = m_pObjectList->m_ObjectList.GetTailPosition(); + CPDF_PageObject* pLastObj = (CPDF_PageObject*)m_pObjectList->m_ObjectList.GetAt(tailpos); + if (pLastObj == NULL || (pLastObj->m_Type != PDFPAGE_INLINES && pLastObj->m_Type != PDFPAGE_IMAGE)) { + AddImage(NULL, m_pLastImage, FALSE); + return; + } + if (pLastObj->m_GeneralState != m_pCurStates->m_GeneralState || + pLastObj->m_ClipPath != m_pCurStates->m_ClipPath || + pLastObj->m_ColorState != m_pCurStates->m_ColorState) { + AddImage(NULL, m_pLastImage, FALSE); + return; + } + CFX_AffineMatrix ImageMatrix; + ImageMatrix.Copy(m_pCurStates->m_CTM); + ImageMatrix.Concat(m_mtContentToUser); + if (pLastObj->m_Type == PDFPAGE_INLINES) { + CPDF_InlineImages* pInlines = (CPDF_InlineImages*)pLastObj; + if (pInlines->m_pStream != m_pLastImage->GetStream()) { + AddImage(NULL, m_pLastImage, FALSE); + return; + } + pInlines->AddMatrix(ImageMatrix); + } else { + CPDF_ImageObject* pImageObj = (CPDF_ImageObject*)pLastObj; + CPDF_InlineImages* pInlines = FX_NEW CPDF_InlineImages; + pInlines->m_pStream = m_pLastImage->GetStream(); + SetGraphicStates(pInlines, !pInlines->m_pStream->GetDict()->KeyExist(FX_BSTRC("ColorSpace")), FALSE, FALSE); + pInlines->AddMatrix(pImageObj->m_Matrix); + pInlines->AddMatrix(ImageMatrix); + m_pObjectList->m_ObjectList.RemoveAt(tailpos); + m_pObjectList->m_ObjectList.AddTail(pInlines); + pLastObj->Release(); + } +} +#endif +CPDF_ImageObject* CPDF_StreamContentParser::AddImage(CPDF_Stream* pStream, CPDF_Image* pImage, FX_BOOL bInline) +{ + if (pStream == NULL && pImage == NULL) { + return NULL; + } + CFX_AffineMatrix ImageMatrix; + ImageMatrix.Copy(m_pCurStates->m_CTM); + ImageMatrix.Concat(m_mtContentToUser); + CPDF_ImageObject* pImageObj = FX_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 = FX_NEW CPDF_Image(m_pDocument); + pImageObj->m_pImage->LoadImageF(pStream, bInline); + } + SetGraphicStates(pImageObj, pImageObj->m_pImage->IsMask(), FALSE, FALSE); + pImageObj->m_Matrix = ImageMatrix; + pImageObj->CalcBoundingBox(); + m_pObjectList->m_ObjectList.AddTail(pImageObj); + return pImageObj; +} +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 ++) { + CPDF_TextObject* pText = (CPDF_TextObject*)m_ClipTextList.GetAt(i); + if (pText) { + delete pText; + } + } + } else { + m_pCurStates->m_ClipPath.AppendTexts((CPDF_TextObject**)m_ClipTextList.GetData(), count); + } + m_ClipTextList.RemoveAll(); +} +void CPDF_StreamContentParser::Handle_EndSectionUndefined() +{ + if (m_CompatCount) { + m_CompatCount --; + } +} +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 = (CPDF_Dictionary*)FindResourceObj(FX_BSTRC("ExtGState"), name); + if (pGS == NULL || pGS->GetType() != PDFOBJ_DICTIONARY) { + 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() +{ +#if !defined(_FPDFAPI_MINI_) || defined(_FXCORE_FEATURE_ALL_) + m_pCurStates->m_GeneralState.GetModify()->m_Flatness = GetNumber(0); +#endif +} +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() +{ + REQUIRE_PARAMS(4); + 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() +{ + REQUIRE_PARAMS(4); + 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() +{ + REQUIRE_PARAMS(2); + if (m_Options.m_bTextOnly) { + return; + } + AddPathPoint(GetNumber(1), GetNumber(0), FXPT_LINETO); +} +void CPDF_StreamContentParser::Handle_MoveTo() +{ + REQUIRE_PARAMS(2); + if (m_Options.m_bTextOnly) { +#ifndef _FPDFAPI_MINI_ + m_pSyntax->SkipPathObject(); +#endif + return; + } + AddPathPoint(GetNumber(1), GetNumber(0), FXPT_MOVETO); +#ifndef _FPDFAPI_MINI_ + ParsePathObject(); +#endif +} +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() +{ + CPDF_AllStates* pStates = FX_NEW CPDF_AllStates; + pStates->Copy(*m_pCurStates); + m_StateStack.Add(pStates); +} +void CPDF_StreamContentParser::Handle_RestoreGraphState() +{ + int size = m_StateStack.GetSize(); + if (size == 0) { + return; + } + CPDF_AllStates* pStates = (CPDF_AllStates*)m_StateStack.GetAt(size - 1); + m_pCurStates->Copy(*pStates); + delete pStates; + m_StateStack.RemoveAt(size - 1); +} +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() +{ + REQUIRE_PARAMS(3); + 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() +{ + REQUIRE_PARAMS(3); + 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 == NULL) { + return; + } + int nargs = m_ParamCount; + int nvalues = nargs; + if (pLastParam->GetType() == PDFOBJ_NAME) { + 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); + } + if (values) { + FX_Free(values); + } +} +void CPDF_StreamContentParser::Handle_SetColorPS_Stroke() +{ + if (m_Options.m_bTextOnly) { + return; + } + CPDF_Object* pLastParam = GetObject(0); + if (pLastParam == NULL) { + return; + } + int nargs = m_ParamCount; + int nvalues = nargs; + if (pLastParam->GetType() == PDFOBJ_NAME) { + 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); + } + if (values) { + FX_Free(values); + } +} +CFX_FloatRect _GetShadingBBox(CPDF_Stream* pStream, int type, const CFX_AffineMatrix* 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 == NULL) { + return; + } + if (pPattern->m_PatternType != PATTERN_SHADING) { + return; + } + CPDF_ShadingPattern* pShading = (CPDF_ShadingPattern*)pPattern; + if (!pShading->m_bShadingObj) { + return; + } + if (!pShading->Load()) { + return; + } + CPDF_ShadingObject* pObj = FX_NEW CPDF_ShadingObject; + pObj->m_pShading = pShading; + SetGraphicStates(pObj, 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->m_ShadingType >= 4) { + bbox.Intersect(_GetShadingBBox((CPDF_Stream*)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_pObjectList->m_ObjectList.AddTail(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(FX_BSTR type, const CFX_ByteString& name) +{ + if (m_pResources == NULL) { + return NULL; + } + if (m_pResources == m_pPageResources) { + CPDF_Dictionary* pList = m_pResources->GetDict(type); + if (pList == NULL) { + return NULL; + } + CPDF_Object* pRes = pList->GetElementValue(name); + return pRes; + } + CPDF_Dictionary* pList = m_pResources->GetDict(type); + if (pList == NULL) { + if (m_pPageResources == NULL) { + return NULL; + } + CPDF_Dictionary* pList = m_pPageResources->GetDict(type); + if (pList == NULL) { + 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 = (CPDF_Dictionary*)FindResourceObj(FX_BSTRC("Font"), name); + if (pFontDict == NULL || pFontDict->GetType() != PDFOBJ_DICTIONARY) { + m_bResourceMissing = TRUE; + return CPDF_Font::GetStockFont(m_pDocument, FX_BSTRC("Helvetica")); + } + CPDF_Font* pFont = m_pDocument->LoadFont(pFontDict); + if (pFont && pFont->GetType3Font()) { + pFont->GetType3Font()->SetPageResources(m_pResources); + pFont->GetType3Font()->CheckType3FontMetrics(); + } + return pFont; +} +CPDF_ColorSpace* CPDF_StreamContentParser::FindColorSpace(const CFX_ByteString& name) +{ + if (name == FX_BSTRC("Pattern")) { + return CPDF_ColorSpace::GetStockCS(PDFCS_PATTERN); + } + if (name == FX_BSTRC("DeviceGray") || name == FX_BSTRC("DeviceCMYK") || name == FX_BSTRC("DeviceRGB")) { + CFX_ByteString defname = "Default"; + defname += name.Mid(7); + CPDF_Object* pDefObj = FindResourceObj(FX_BSTRC("ColorSpace"), defname); + if (pDefObj == NULL) { + if (name == FX_BSTRC("DeviceGray")) { + return CPDF_ColorSpace::GetStockCS(PDFCS_DEVICEGRAY); + } + if (name == FX_BSTRC("DeviceRGB")) { + return CPDF_ColorSpace::GetStockCS(PDFCS_DEVICERGB); + } + return CPDF_ColorSpace::GetStockCS(PDFCS_DEVICECMYK); + } + return m_pDocument->LoadColorSpace(pDefObj); + } + CPDF_Object* pCSObj = FindResourceObj(FX_BSTRC("ColorSpace"), name); + if (pCSObj == NULL) { + 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 ? FX_BSTRC("Shading") : FX_BSTRC("Pattern"), name); + if (pPattern == NULL || (pPattern->GetType() != PDFOBJ_DICTIONARY && + pPattern->GetType() != PDFOBJ_STREAM)) { + 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 == NULL) { + return; + } + if (fInitKerning != 0) { + if (!pFont->IsVertWriting()) { + m_pCurStates->m_TextX -= FXSYS_Mul(fInitKerning, m_pCurStates->m_TextState.GetFontSize()) / 1000; + } else { + m_pCurStates->m_TextY -= FXSYS_Mul(fInitKerning, m_pCurStates->m_TextState.GetFontSize()) / 1000; + } + } + if (nsegs == 0) { + return; + } + int textmode; + if (pFont->GetFontType() == PDFFONT_TYPE3) { + textmode = 0; + } else { + textmode = m_pCurStates->m_TextState.GetObject()->m_TextMode; + } + CPDF_TextObject* pText = FX_NEW CPDF_TextObject; + m_pLastTextObject = pText; + SetGraphicStates(pText, 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, 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) { + CPDF_TextObject* pCopy = FX_NEW CPDF_TextObject; + pCopy->Copy(pText); + m_ClipTextList.Add(pCopy); + } + m_pObjectList->m_ObjectList.AddTail(pText); + if (pKerning && pKerning[nsegs - 1] != 0) { + if (!pFont->IsVertWriting()) { + m_pCurStates->m_TextX -= FXSYS_Mul(pKerning[nsegs - 1], m_pCurStates->m_TextState.GetFontSize()) / 1000; + } else { + m_pCurStates->m_TextY -= FXSYS_Mul(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)->GetArray(); + if (pArray == NULL) { + return; + } + int n = pArray->GetCount(), nsegs = 0, i; + for (i = 0; i < n; i ++) { + CPDF_Object* pObj = pArray->GetElementValue(i); + if (pObj->GetType() == PDFOBJ_STRING) { + nsegs ++; + } + } + if (nsegs == 0) { + for (i = 0; i < n; i ++) { + m_pCurStates->m_TextX -= FXSYS_Mul(pArray->GetNumber(i), m_pCurStates->m_TextState.GetFontSize()) / 1000; + }; + return; + } + CFX_ByteString* pStrs; + FX_NEW_VECTOR(pStrs, CFX_ByteString, nsegs); + FX_FLOAT* pKerning = FX_Alloc(FX_FLOAT, nsegs); + int iSegment = 0; + FX_FLOAT fInitKerning = 0; + for (i = 0; i < n; i ++) { + CPDF_Object* pObj = pArray->GetElementValue(i); + if (pObj->GetType() == PDFOBJ_STRING) { + CFX_ByteString str = pObj->GetString(); + if (str.IsEmpty()) { + continue; + } + pStrs[iSegment] = str; + pKerning[iSegment ++] = 0; + } else { + if (iSegment == 0) { + fInitKerning += pObj->GetNumber(); + } else { + pKerning[iSegment - 1] += pObj->GetNumber(); + } + } + } + AddTextObject(pStrs, fInitKerning, pKerning, iSegment); + FX_DELETE_VECTOR(pStrs, CFX_ByteString, nsegs); + 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_AffineMatrix 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_memcpy32(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_memcpy32(pPathData->GetPoints(), m_pPathPoints, sizeof(FX_PATHPOINT) * PathPointCount); + CFX_AffineMatrix matrix = m_pCurStates->m_CTM; + matrix.Concat(m_mtContentToUser); + if (bStroke || FillType) { + CPDF_PathObject* pPathObj = FX_NEW CPDF_PathObject; + pPathObj->m_bStroke = bStroke; + pPathObj->m_FillType = FillType; + pPathObj->m_Path = Path; + pPathObj->m_Matrix = matrix; + SetGraphicStates(pPathObj, TRUE, FALSE, TRUE); + pPathObj->CalcBoundingBox(); + m_pObjectList->m_ObjectList.AddTail(pPathObj); + } + if (PathClipType) { + if (!matrix.IsIdentity()) { + Path.Transform(&matrix); + matrix.SetIdentity(); + } + m_pCurStates->m_ClipPath.AppendPath(Path, PathClipType, TRUE); + } +} +CFX_ByteString _FPDF_ByteStringFromHex(CFX_BinaryBuf& src_buf) +{ + CFX_ByteTextBuf buf; + FX_BOOL bFirst = TRUE; + int code = 0; + FX_LPCBYTE str = src_buf.GetBuffer(); + FX_DWORD size = src_buf.GetSize(); + for (FX_DWORD i = 0; i < size; i ++) { + FX_BYTE ch = str[i]; + if (ch >= '0' && ch <= '9') { + if (bFirst) { + code = (ch - '0') * 16; + } else { + code += ch - '0'; + buf.AppendChar((char)code); + } + bFirst = !bFirst; + } else if (ch >= 'A' && ch <= 'F') { + if (bFirst) { + code = (ch - 'A' + 10) * 16; + } else { + code += ch - 'A' + 10; + buf.AppendChar((char)code); + } + bFirst = !bFirst; + } else if (ch >= 'a' && ch <= 'f') { + if (bFirst) { + code = (ch - 'a' + 10) * 16; + } else { + code += ch - 'a' + 10; + buf.AppendChar((char)code); + } + bFirst = !bFirst; + } + } + if (!bFirst) { + buf.AppendChar((char)code); + } + return buf.GetByteString(); +} -- cgit v1.2.3