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Diffstat (limited to 'core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp')
-rw-r--r--core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp2292
1 files changed, 1146 insertions, 1146 deletions
diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
index 2f0a18d62e..cafca2623c 100644
--- a/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
+++ b/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
@@ -1,1146 +1,1146 @@
-// 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/fxcodec/fx_codec.h"
-#include "pageint.h"
-#include <limits.h>
-extern const FX_LPCSTR _PDF_OpCharType =
- "IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII"
- "IIVIIIIVIIVIIIIIVVIIIIIIIIIIIIII"
- "IIVVVVVVIVVVVVVIVVVVVIIVVIIIIIII"
- "IIVVVVVVVVVVVVVVIVVVIIVVIVVIIIII"
- "IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII"
- "IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII"
- "IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII"
- "IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII";
-FX_BOOL _PDF_HasInvalidOpChar(FX_LPCSTR op)
-{
- if(!op) {
- return FALSE;
- }
- FX_BYTE ch;
- while((ch = *op++)) {
- if(_PDF_OpCharType[ch] == 'I') {
- return TRUE;
- }
- }
- return FALSE;
-}
-FX_DWORD CPDF_StreamContentParser::Parse(FX_LPCBYTE pData, FX_DWORD dwSize, FX_DWORD max_cost)
-{
- if (m_Level > _FPDF_MAX_FORM_LEVEL_) {
- return dwSize;
- }
- FX_DWORD InitObjCount = m_pObjectList->CountObjects();
- CPDF_StreamParser syntax(pData, dwSize);
- m_pSyntax = &syntax;
- m_CompatCount = 0;
- while (1) {
- FX_DWORD cost = m_pObjectList->CountObjects() - InitObjCount;
- if (max_cost && cost >= max_cost) {
- break;
- }
- switch (syntax.ParseNextElement()) {
- case CPDF_StreamParser::EndOfData:
- return m_pSyntax->GetPos();
- case CPDF_StreamParser::Keyword:
- if(!OnOperator((char*)syntax.GetWordBuf()) && _PDF_HasInvalidOpChar((char*)syntax.GetWordBuf())) {
- m_bAbort = TRUE;
- }
- if (m_bAbort) {
- return m_pSyntax->GetPos();
- }
- ClearAllParams();
- break;
- case CPDF_StreamParser::Number:
- AddNumberParam((char*)syntax.GetWordBuf(), syntax.GetWordSize());
- break;
- case CPDF_StreamParser::Name:
- AddNameParam((FX_LPCSTR)syntax.GetWordBuf() + 1, syntax.GetWordSize() - 1);
- break;
- default:
- AddObjectParam(syntax.GetObject());
- }
- }
- return m_pSyntax->GetPos();
-}
-void _PDF_ReplaceAbbr(CPDF_Object* pObj);
-void CPDF_StreamContentParser::Handle_BeginImage()
-{
- FX_FILESIZE savePos = m_pSyntax->GetPos();
- CPDF_Dictionary* pDict = CPDF_Dictionary::Create();
- 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 != FX_BSTRC("ID")) {
- m_pSyntax->SetPos(savePos);
- pDict->Release();
- return;
- }
- }
- if (type != CPDF_StreamParser::Name) {
- break;
- }
- CFX_ByteString key((FX_LPCSTR)m_pSyntax->GetWordBuf() + 1, m_pSyntax->GetWordSize() - 1);
- CPDF_Object* pObj = m_pSyntax->ReadNextObject();
- if (!key.IsEmpty()) {
- pDict->SetAt(key, pObj, m_pDocument);
- } else {
- pObj->Release();
- }
- }
- _PDF_ReplaceAbbr(pDict);
- CPDF_Object* pCSObj = NULL;
- if (pDict->KeyExist(FX_BSTRC("ColorSpace"))) {
- pCSObj = pDict->GetElementValue(FX_BSTRC("ColorSpace"));
- if (pCSObj->GetType() == PDFOBJ_NAME) {
- CFX_ByteString name = pCSObj->GetString();
- if (name != FX_BSTRC("DeviceRGB") && name != FX_BSTRC("DeviceGray") && name != FX_BSTRC("DeviceCMYK")) {
- pCSObj = FindResourceObj(FX_BSTRC("ColorSpace"), name);
- if (pCSObj && !pCSObj->GetObjNum()) {
- pCSObj = pCSObj->Clone();
- pDict->SetAt(FX_BSTRC("ColorSpace"), pCSObj, m_pDocument);
- }
- }
- }
- }
- 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(FX_BSTRC("Subtype"), FX_BSTRC("Image"));
- CPDF_ImageObject *pImgObj = AddImage(pStream, NULL, TRUE);
- if (!pImgObj) {
- if (pStream) {
- pStream->Release();
- } else {
- pDict->Release();
- }
- }
-}
-void CPDF_StreamContentParser::ParsePathObject()
-{
- FX_FLOAT params[6] = {0};
- 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 'm':
- AddPathPoint(params[0], params[1], FXPT_MOVETO);
- nParams = 0;
- break;
- case 'l':
- AddPathPoint(params[0], params[1], FXPT_LINETO);
- nParams = 0;
- break;
- case 'c':
- 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 'v':
- 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 'y':
- 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 'h':
- Handle_ClosePath();
- nParams = 0;
- break;
- default:
- bProcessed = FALSE;
- break;
- }
- } else if (len == 2) {
- if (m_pSyntax->GetWordBuf()[0] == 'r' && m_pSyntax->GetWordBuf()[1] == 'e') {
- AddPathRect(params[0], params[1], params[2], params[3]);
- nParams = 0;
- } else {
- bProcessed = FALSE;
- }
- } else {
- bProcessed = FALSE;
- }
- if (bProcessed) {
- last_pos = m_pSyntax->GetPos();
- }
- break;
- }
- case CPDF_StreamParser::Number: {
- if (nParams == 6) {
- break;
- }
- FX_BOOL bInteger;
- int value;
- FX_atonum(CFX_ByteStringC(m_pSyntax->GetWordBuf(), m_pSyntax->GetWordSize()), bInteger, &value);
- params[nParams++] = bInteger ? (FX_FLOAT)value : *(FX_FLOAT*)&value;
- break;
- }
- default:
- bProcessed = FALSE;
- }
- if (!bProcessed) {
- m_pSyntax->SetPos(last_pos);
- return;
- }
- }
-}
-CPDF_StreamParser::CPDF_StreamParser(const FX_BYTE* pData, FX_DWORD dwSize)
-{
- m_pBuf = pData;
- m_Size = dwSize;
- m_Pos = 0;
- m_pLastObj = NULL;
-}
-CPDF_StreamParser::~CPDF_StreamParser()
-{
- if (m_pLastObj) {
- m_pLastObj->Release();
- }
-}
-FX_DWORD _DecodeAllScanlines(ICodec_ScanlineDecoder* pDecoder, FX_LPBYTE& dest_buf, FX_DWORD& dest_size)
-{
- if (pDecoder == NULL) {
- return (FX_DWORD) - 1;
- }
- int ncomps = pDecoder->CountComps();
- int bpc = pDecoder->GetBPC();
- int width = pDecoder->GetWidth();
- int height = pDecoder->GetHeight();
- int pitch = (width * ncomps * bpc + 7) / 8;
- if (height == 0 || pitch > (1 << 30) / height) {
- delete pDecoder;
- return -1;
- }
- dest_size = pitch * height;
- dest_buf = FX_Alloc( FX_BYTE, dest_size);
- for (int row = 0; row < height; row ++) {
- FX_LPBYTE pLine = pDecoder->GetScanline(row);
- if (pLine == NULL) {
- break;
- }
- FXSYS_memcpy32(dest_buf + row * pitch, pLine, pitch);
- }
- FX_DWORD srcoff = pDecoder->GetSrcOffset();
- delete pDecoder;
- return srcoff;
-}
-ICodec_ScanlineDecoder* FPDFAPI_CreateFaxDecoder(FX_LPCBYTE src_buf, FX_DWORD src_size, int width, int height,
- const CPDF_Dictionary* pParams);
-FX_DWORD _A85Decode(const FX_BYTE* src_buf, FX_DWORD src_size, FX_LPBYTE& dest_buf, FX_DWORD& dest_size);
-FX_DWORD _HexDecode(const FX_BYTE* src_buf, FX_DWORD src_size, FX_LPBYTE& dest_buf, FX_DWORD& dest_size);
-FX_DWORD FPDFAPI_FlateOrLZWDecode(FX_BOOL bLZW, const FX_BYTE* src_buf, FX_DWORD src_size, CPDF_Dictionary* pParams,
- FX_DWORD estimated_size, FX_LPBYTE& dest_buf, FX_DWORD& dest_size);
-FX_DWORD PDF_DecodeInlineStream(const FX_BYTE* src_buf, FX_DWORD limit,
- int width, int height, CFX_ByteString& decoder,
- CPDF_Dictionary* pParam, FX_LPBYTE& dest_buf, FX_DWORD& dest_size)
-{
- if (decoder == FX_BSTRC("CCITTFaxDecode") || decoder == FX_BSTRC("CCF")) {
- ICodec_ScanlineDecoder* pDecoder = FPDFAPI_CreateFaxDecoder(src_buf, limit, width, height, pParam);
- return _DecodeAllScanlines(pDecoder, dest_buf, dest_size);
- } else if (decoder == FX_BSTRC("ASCII85Decode") || decoder == FX_BSTRC("A85")) {
- return _A85Decode(src_buf, limit, dest_buf, dest_size);
- } else if (decoder == FX_BSTRC("ASCIIHexDecode") || decoder == FX_BSTRC("AHx")) {
- return _HexDecode(src_buf, limit, dest_buf, dest_size);
- } else if (decoder == FX_BSTRC("FlateDecode") || decoder == FX_BSTRC("Fl")) {
- return FPDFAPI_FlateOrLZWDecode(FALSE, src_buf, limit, pParam, dest_size, dest_buf, dest_size);
- } else if (decoder == FX_BSTRC("LZWDecode") || decoder == FX_BSTRC("LZW")) {
- return FPDFAPI_FlateOrLZWDecode(TRUE, src_buf, limit, pParam, 0, dest_buf, dest_size);
- } else if (decoder == FX_BSTRC("DCTDecode") || decoder == FX_BSTRC("DCT")) {
- ICodec_ScanlineDecoder* pDecoder = CPDF_ModuleMgr::Get()->GetJpegModule()->CreateDecoder(
- src_buf, limit, width, height, 0, pParam ? pParam->GetInteger(FX_BSTRC("ColorTransform"), 1) : 1);
- return _DecodeAllScanlines(pDecoder, dest_buf, dest_size);
- } else if (decoder == FX_BSTRC("RunLengthDecode") || decoder == FX_BSTRC("RL")) {
- return RunLengthDecode(src_buf, limit, dest_buf, dest_size);
- }
- dest_size = 0;
- dest_buf = 0;
- return (FX_DWORD) - 1;
-}
-extern const FX_LPCSTR _PDF_CharType;
-CPDF_Stream* CPDF_StreamParser::ReadInlineStream(CPDF_Document* pDoc, CPDF_Dictionary* pDict, CPDF_Object* pCSObj, FX_BOOL bDecode)
-{
- if (m_Pos == m_Size) {
- return NULL;
- }
- if (_PDF_CharType[m_pBuf[m_Pos]] == 'W') {
- m_Pos ++;
- }
- CFX_ByteString Decoder;
- CPDF_Dictionary* pParam = NULL;
- CPDF_Object* pFilter = pDict->GetElementValue(FX_BSTRC("Filter"));
- if (pFilter == NULL) {
- } else if (pFilter->GetType() == PDFOBJ_ARRAY) {
- Decoder = ((CPDF_Array*)pFilter)->GetString(0);
- CPDF_Array* pParams = pDict->GetArray(FX_BSTRC("DecodeParms"));
- if (pParams) {
- pParam = pParams->GetDict(0);
- }
- } else {
- Decoder = pFilter->GetString();
- pParam = pDict->GetDict(FX_BSTRC("DecodeParms"));
- }
- FX_DWORD width = pDict->GetInteger(FX_BSTRC("Width"));
- FX_DWORD height = pDict->GetInteger(FX_BSTRC("Height"));
- FX_DWORD OrigSize = 0;
- if (pCSObj != NULL) {
- FX_DWORD bpc = pDict->GetInteger(FX_BSTRC("BitsPerComponent"));
- FX_DWORD nComponents = 1;
- CPDF_ColorSpace* pCS = pDoc->LoadColorSpace(pCSObj);
- if (pCS == NULL) {
- nComponents = 3;
- } else {
- nComponents = pCS->CountComponents();
- pDoc->GetPageData()->ReleaseColorSpace(pCSObj);
- }
- FX_DWORD pitch = width;
- if (bpc && pitch > INT_MAX / bpc) {
- return NULL;
- }
- pitch *= bpc;
- if (nComponents && pitch > INT_MAX / nComponents) {
- return NULL;
- }
- pitch *= nComponents;
- if (pitch > INT_MAX - 7) {
- return NULL;
- }
- pitch += 7;
- pitch /= 8;
- OrigSize = pitch;
- } else {
- if (width > INT_MAX - 7) {
- return NULL;
- }
- OrigSize = ((width + 7) / 8);
- }
- if (height && OrigSize > INT_MAX / height) {
- return NULL;
- }
- OrigSize *= height;
- FX_LPBYTE pData = NULL;
- FX_DWORD dwStreamSize;
- if (Decoder.IsEmpty()) {
- if (OrigSize > m_Size - m_Pos) {
- OrigSize = m_Size - m_Pos;
- }
- pData = FX_Alloc(FX_BYTE, OrigSize);
- FXSYS_memcpy32(pData, m_pBuf + m_Pos, OrigSize);
- dwStreamSize = OrigSize;
- m_Pos += OrigSize;
- } else {
- FX_DWORD dwDestSize = OrigSize;
- dwStreamSize = PDF_DecodeInlineStream(m_pBuf + m_Pos, m_Size - m_Pos, width, height, Decoder, pParam,
- pData, dwDestSize);
- if ((int)dwStreamSize < 0) {
- return NULL;
- }
- if (bDecode) {
- m_Pos += dwStreamSize;
- dwStreamSize = dwDestSize;
- if (pFilter->GetType() == PDFOBJ_ARRAY) {
- ((CPDF_Array*)pFilter)->RemoveAt(0);
- CPDF_Array* pParams = pDict->GetArray(FX_BSTRC("DecodeParms"));
- if (pParams) {
- pParams->RemoveAt(0);
- }
- } else {
- pDict->RemoveAt(FX_BSTRC("Filter"));
- pDict->RemoveAt(FX_BSTRC("DecodeParms"));
- }
- } else {
- if (pData) {
- FX_Free(pData);
- }
- FX_DWORD dwSavePos = m_Pos;
- m_Pos += dwStreamSize;
- while (1) {
- FX_DWORD dwPrevPos = m_Pos;
- CPDF_StreamParser::SyntaxType type = ParseNextElement();
- if (type == CPDF_StreamParser::EndOfData) {
- break;
- }
- if (type != CPDF_StreamParser::Keyword) {
- dwStreamSize += m_Pos - dwPrevPos;
- continue;
- }
- if (GetWordSize() == 2 && GetWordBuf()[0] == 'E' &&
- GetWordBuf()[1] == 'I') {
- m_Pos = dwPrevPos;
- break;
- }
- dwStreamSize += m_Pos - dwPrevPos;
- }
- m_Pos = dwSavePos;
- pData = FX_Alloc(FX_BYTE, dwStreamSize);
- FXSYS_memcpy32(pData, m_pBuf + m_Pos, dwStreamSize);
- m_Pos += dwStreamSize;
- }
- }
- pDict->SetAtInteger(FX_BSTRC("Length"), (int)dwStreamSize);
- return CPDF_Stream::Create(pData, dwStreamSize, pDict);
-}
-#define MAX_WORD_BUFFER 256
-#define MAX_STRING_LENGTH 32767
-#define FXDWORD_TRUE FXDWORD_FROM_LSBFIRST(0x65757274)
-#define FXDWORD_NULL FXDWORD_FROM_LSBFIRST(0x6c6c756e)
-#define FXDWORD_FALS FXDWORD_FROM_LSBFIRST(0x736c6166)
-CPDF_StreamParser::SyntaxType CPDF_StreamParser::ParseNextElement()
-{
- if (m_pLastObj) {
- m_pLastObj->Release();
- m_pLastObj = NULL;
- }
- m_WordSize = 0;
- FX_BOOL bIsNumber = TRUE;
- if (m_Pos >= m_Size) {
- return EndOfData;
- }
- int ch = m_pBuf[m_Pos++];
- int type = _PDF_CharType[ch];
- while (1) {
- while (type == 'W') {
- if (m_Size <= m_Pos) {
- return EndOfData;
- }
- ch = m_pBuf[m_Pos++];
- type = _PDF_CharType[ch];
- }
- if (ch != '%') {
- break;
- }
- while (1) {
- if (m_Size <= m_Pos) {
- return EndOfData;
- }
- ch = m_pBuf[m_Pos++];
- if (ch == '\r' || ch == '\n') {
- break;
- }
- }
- type = _PDF_CharType[ch];
- }
- if (type == 'D' && ch != '/') {
- m_Pos --;
- m_pLastObj = ReadNextObject();
- return Others;
- }
- while (1) {
- if (m_WordSize < MAX_WORD_BUFFER) {
- m_WordBuffer[m_WordSize++] = ch;
- }
- if (type != 'N') {
- bIsNumber = FALSE;
- }
- if (m_Size <= m_Pos) {
- break;
- }
- ch = m_pBuf[m_Pos++];
- type = _PDF_CharType[ch];
- if (type == 'D' || type == 'W') {
- m_Pos --;
- break;
- }
- }
- m_WordBuffer[m_WordSize] = 0;
- if (bIsNumber) {
- return Number;
- }
- if (m_WordBuffer[0] == '/') {
- return Name;
- }
- if (m_WordSize == 4) {
- if (*(FX_DWORD*)m_WordBuffer == FXDWORD_TRUE) {
- m_pLastObj = CPDF_Boolean::Create(TRUE);
- return Others;
- }
- if (*(FX_DWORD*)m_WordBuffer == FXDWORD_NULL) {
- m_pLastObj = CPDF_Null::Create();
- return Others;
- }
- } else if (m_WordSize == 5) {
- if (*(FX_DWORD*)m_WordBuffer == FXDWORD_FALS && m_WordBuffer[4] == 'e') {
- m_pLastObj = CPDF_Boolean::Create(FALSE);
- return Others;
- }
- }
- return Keyword;
-}
-void CPDF_StreamParser::SkipPathObject()
-{
- FX_DWORD command_startpos = m_Pos;
- if (m_Pos >= m_Size) {
- return;
- }
- int ch = m_pBuf[m_Pos++];
- int type = _PDF_CharType[ch];
- while (1) {
- while (type == 'W') {
- if (m_Pos >= m_Size) {
- return;
- }
- ch = m_pBuf[m_Pos++];
- type = _PDF_CharType[ch];
- }
- if (type != 'N') {
- m_Pos = command_startpos;
- return;
- }
- while (1) {
- while (type != 'W') {
- if (m_Pos >= m_Size) {
- return;
- }
- ch = m_pBuf[m_Pos++];
- type = _PDF_CharType[ch];
- }
- while (type == 'W') {
- if (m_Pos >= m_Size) {
- return;
- }
- ch = m_pBuf[m_Pos++];
- type = _PDF_CharType[ch];
- }
- if (type == 'N') {
- continue;
- }
- FX_DWORD op_startpos = m_Pos - 1;
- while (type != 'W' && type != 'D') {
- if (m_Pos >= m_Size) {
- return;
- }
- ch = m_pBuf[m_Pos++];
- type = _PDF_CharType[ch];
- }
- if (m_Pos - op_startpos == 2) {
- int op = m_pBuf[op_startpos];
- if (op == 'm' || op == 'l' || op == 'c' || op == 'v' || op == 'y') {
- command_startpos = m_Pos;
- break;
- }
- } else if (m_Pos - op_startpos == 3) {
- if (m_pBuf[op_startpos] == 'r' && m_pBuf[op_startpos + 1] == 'e') {
- command_startpos = m_Pos;
- break;
- }
- }
- m_Pos = command_startpos;
- return;
- }
- }
-}
-CPDF_Object* CPDF_StreamParser::ReadNextObject(FX_BOOL bAllowNestedArray, FX_BOOL bInArray)
-{
- FX_BOOL bIsNumber;
- GetNextWord(bIsNumber);
- if (m_WordSize == 0) {
- return NULL;
- }
- if (bIsNumber) {
- m_WordBuffer[m_WordSize] = 0;
- return CPDF_Number::Create(CFX_ByteStringC(m_WordBuffer, m_WordSize));
- }
- int first_char = m_WordBuffer[0];
- if (first_char == '/') {
- return CPDF_Name::Create(PDF_NameDecode(CFX_ByteStringC(m_WordBuffer + 1, m_WordSize - 1)));
- }
- if (first_char == '(') {
- return CPDF_String::Create(ReadString());
- }
- if (first_char == '<') {
- if (m_WordSize == 1) {
- return CPDF_String::Create(ReadHexString(), TRUE);
- }
- CPDF_Dictionary* pDict = CPDF_Dictionary::Create();
- while (1) {
- GetNextWord(bIsNumber);
- if (m_WordSize == 0) {
- pDict->Release();
- return NULL;
- }
- if (m_WordSize == 2 && m_WordBuffer[0] == '>') {
- break;
- }
- if (m_WordBuffer[0] != '/') {
- pDict->Release();
- return NULL;
- }
- CFX_ByteString key = PDF_NameDecode(CFX_ByteStringC(m_WordBuffer + 1, m_WordSize - 1));
- CPDF_Object* pObj = ReadNextObject(TRUE);
- if (pObj == NULL) {
- if (pDict) {
- pDict->Release();
- }
- return NULL;
- }
- if (!key.IsEmpty()) {
- pDict->SetAt(key, pObj);
- } else {
- pObj->Release();
- }
- }
- return pDict;
- }
- if (first_char == '[') {
- if (!bAllowNestedArray && bInArray) {
- return NULL;
- }
- CPDF_Array* pArray = CPDF_Array::Create();
- while (1) {
- CPDF_Object* pObj = ReadNextObject(bAllowNestedArray, TRUE);
- if (pObj == NULL) {
- if (m_WordSize == 0 || m_WordBuffer[0] == ']') {
- return pArray;
- }
- if (m_WordBuffer[0] == '[') {
- continue;
- }
- } else {
- pArray->Add(pObj);
- }
- }
- }
- if (m_WordSize == 4) {
- if (*(FX_DWORD*)m_WordBuffer == FXDWORD_TRUE) {
- return CPDF_Boolean::Create(TRUE);
- }
- if (*(FX_DWORD*)m_WordBuffer == FXDWORD_NULL) {
- return CPDF_Null::Create();
- }
- } else if (m_WordSize == 5) {
- if (*(FX_DWORD*)m_WordBuffer == FXDWORD_FALS && m_WordBuffer[4] == 'e') {
- return CPDF_Boolean::Create(FALSE);
- }
- }
- return NULL;
-}
-void CPDF_StreamParser::GetNextWord(FX_BOOL& bIsNumber)
-{
- m_WordSize = 0;
- bIsNumber = TRUE;
- if (m_Size <= m_Pos) {
- return;
- }
- int ch = m_pBuf[m_Pos++];
- int type = _PDF_CharType[ch];
- while (1) {
- while (type == 'W') {
- if (m_Size <= m_Pos) {
- return;
- }
- ch = m_pBuf[m_Pos++];
- type = _PDF_CharType[ch];
- }
- if (ch != '%') {
- break;
- }
- while (1) {
- if (m_Size <= m_Pos) {
- return;
- }
- ch = m_pBuf[m_Pos++];
- if (ch == '\r' || ch == '\n') {
- break;
- }
- }
- type = _PDF_CharType[ch];
- }
- if (type == 'D') {
- bIsNumber = FALSE;
- m_WordBuffer[m_WordSize++] = ch;
- if (ch == '/') {
- while (1) {
- if (m_Size <= m_Pos) {
- return;
- }
- ch = m_pBuf[m_Pos++];
- type = _PDF_CharType[ch];
- if (type != 'R' && type != 'N') {
- m_Pos --;
- return;
- }
- if (m_WordSize < MAX_WORD_BUFFER) {
- m_WordBuffer[m_WordSize++] = ch;
- }
- }
- } else if (ch == '<') {
- if (m_Size <= m_Pos) {
- return;
- }
- ch = m_pBuf[m_Pos++];
- if (ch == '<') {
- m_WordBuffer[m_WordSize++] = ch;
- } else {
- m_Pos --;
- }
- } else if (ch == '>') {
- if (m_Size <= m_Pos) {
- return;
- }
- ch = m_pBuf[m_Pos++];
- if (ch == '>') {
- m_WordBuffer[m_WordSize++] = ch;
- } else {
- m_Pos --;
- }
- }
- return;
- }
- while (1) {
- if (m_WordSize < MAX_WORD_BUFFER) {
- m_WordBuffer[m_WordSize++] = ch;
- }
- if (type != 'N') {
- bIsNumber = FALSE;
- }
- if (m_Size <= m_Pos) {
- return;
- }
- ch = m_pBuf[m_Pos++];
- type = _PDF_CharType[ch];
- if (type == 'D' || type == 'W') {
- m_Pos --;
- break;
- }
- }
-}
-CFX_ByteString CPDF_StreamParser::ReadString()
-{
- if (m_Size <= m_Pos) {
- return CFX_ByteString();
- }
- int ch = m_pBuf[m_Pos++];
- CFX_ByteTextBuf buf;
- int parlevel = 0;
- int status = 0, iEscCode = 0;
- while (1) {
- switch (status) {
- case 0:
- if (ch == ')') {
- if (parlevel == 0) {
- if (buf.GetLength() > MAX_STRING_LENGTH) {
- return CFX_ByteString(buf.GetBuffer(), MAX_STRING_LENGTH);
- }
- return buf.GetByteString();
- }
- parlevel --;
- buf.AppendChar(')');
- } else if (ch == '(') {
- parlevel ++;
- buf.AppendChar('(');
- } else if (ch == '\\') {
- status = 1;
- } else {
- buf.AppendChar((char)ch);
- }
- break;
- case 1:
- if (ch >= '0' && ch <= '7') {
- iEscCode = ch - '0';
- status = 2;
- break;
- }
- if (ch == 'n') {
- buf.AppendChar('\n');
- } else if (ch == 'r') {
- buf.AppendChar('\r');
- } else if (ch == 't') {
- buf.AppendChar('\t');
- } else if (ch == 'b') {
- buf.AppendChar('\b');
- } else if (ch == 'f') {
- buf.AppendChar('\f');
- } else if (ch == '\r') {
- status = 4;
- break;
- } else if (ch == '\n') {
- } else {
- buf.AppendChar(ch);
- }
- status = 0;
- break;
- case 2:
- if (ch >= '0' && ch <= '7') {
- iEscCode = iEscCode * 8 + ch - '0';
- status = 3;
- } else {
- buf.AppendChar(iEscCode);
- status = 0;
- continue;
- }
- break;
- case 3:
- if (ch >= '0' && ch <= '7') {
- iEscCode = iEscCode * 8 + ch - '0';
- buf.AppendChar(iEscCode);
- status = 0;
- } else {
- buf.AppendChar(iEscCode);
- status = 0;
- continue;
- }
- break;
- case 4:
- status = 0;
- if (ch != '\n') {
- continue;
- }
- break;
- }
- if (m_Size <= m_Pos) {
- break;
- }
- ch = m_pBuf[m_Pos++];
- }
- if (m_Size > m_Pos) {
- ch = m_pBuf[m_Pos++];
- }
- if (buf.GetLength() > MAX_STRING_LENGTH) {
- return CFX_ByteString(buf.GetBuffer(), MAX_STRING_LENGTH);
- }
- return buf.GetByteString();
-}
-CFX_ByteString CPDF_StreamParser::ReadHexString()
-{
- if (m_Size <= m_Pos) {
- return CFX_ByteString();
- }
- int ch = m_pBuf[m_Pos++];
- CFX_ByteTextBuf buf;
- FX_BOOL bFirst = TRUE;
- int code = 0;
- while (1) {
- if (ch == '>') {
- break;
- }
- 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 (m_Size <= m_Pos) {
- break;
- }
- ch = m_pBuf[m_Pos++];
- }
- if (!bFirst) {
- buf.AppendChar((char)code);
- }
- if (buf.GetLength() > MAX_STRING_LENGTH) {
- return CFX_ByteString(buf.GetBuffer(), MAX_STRING_LENGTH);
- }
- return buf.GetByteString();
-}
-#define PAGEPARSE_STAGE_GETCONTENT 1
-#define PAGEPARSE_STAGE_PARSE 2
-#define PAGEPARSE_STAGE_CHECKCLIP 3
-CPDF_ContentParser::CPDF_ContentParser()
-{
- m_pParser = NULL;
- m_pStreamArray = NULL;
- m_pSingleStream = NULL;
- m_pData = NULL;
- m_Status = Ready;
- m_pType3Char = NULL;
-}
-CPDF_ContentParser::~CPDF_ContentParser()
-{
- Clear();
-}
-void CPDF_ContentParser::Clear()
-{
- if (m_pParser) {
- delete m_pParser;
- }
- if (m_pSingleStream) {
- delete m_pSingleStream;
- }
- if (m_pStreamArray) {
- for (FX_DWORD i = 0; i < m_nStreams; i ++)
- if (m_pStreamArray[i]) {
- delete m_pStreamArray[i];
- }
- FX_Free(m_pStreamArray);
- }
- if (m_pData && m_pSingleStream == NULL) {
- FX_Free((void*)m_pData);
- }
- m_pParser = NULL;
- m_pStreamArray = NULL;
- m_pSingleStream = NULL;
- m_pData = NULL;
- m_Status = Ready;
-}
-void CPDF_ContentParser::Start(CPDF_Page* pPage, CPDF_ParseOptions* pOptions)
-{
- if (m_Status != Ready || pPage == NULL || pPage->m_pDocument == NULL || pPage->m_pFormDict == NULL) {
- m_Status = Done;
- return;
- }
- m_pObjects = pPage;
- m_bForm = FALSE;
- if (pOptions) {
- m_Options = *pOptions;
- }
- m_Status = ToBeContinued;
- m_InternalStage = PAGEPARSE_STAGE_GETCONTENT;
- m_CurrentOffset = 0;
- CPDF_Object* pContent = pPage->m_pFormDict->GetElementValue(FX_BSTRC("Contents"));
- if (pContent == NULL) {
- m_Status = Done;
- return;
- }
- if (pContent->GetType() == PDFOBJ_STREAM) {
- m_nStreams = 0;
- m_pSingleStream = FX_NEW CPDF_StreamAcc;
- m_pSingleStream->LoadAllData((CPDF_Stream*)pContent, FALSE);
- } else if (pContent->GetType() == PDFOBJ_ARRAY) {
- CPDF_Array* pArray = (CPDF_Array*)pContent;
- m_nStreams = pArray->GetCount();
- if (m_nStreams == 0) {
- m_Status = Done;
- return;
- }
- m_pStreamArray = FX_Alloc(CPDF_StreamAcc*, m_nStreams);
- FXSYS_memset32(m_pStreamArray, 0, sizeof(CPDF_StreamAcc*) * m_nStreams);
- } else {
- m_Status = Done;
- return;
- }
-}
-void CPDF_ContentParser::Start(CPDF_Form* pForm, CPDF_AllStates* pGraphicStates,
- CFX_AffineMatrix* pParentMatrix, CPDF_Type3Char* pType3Char, CPDF_ParseOptions* pOptions, int level)
-{
- m_pType3Char = pType3Char;
- m_pObjects = pForm;
- m_bForm = TRUE;
- CFX_AffineMatrix form_matrix = pForm->m_pFormDict->GetMatrix(FX_BSTRC("Matrix"));
- if (pGraphicStates) {
- form_matrix.Concat(pGraphicStates->m_CTM);
- }
- CPDF_Array* pBBox = pForm->m_pFormDict->GetArray(FX_BSTRC("BBox"));
- CFX_FloatRect form_bbox;
- CPDF_Path ClipPath;
- if (pBBox) {
- form_bbox = pBBox->GetRect();
- ClipPath.New();
- ClipPath.AppendRect(form_bbox.left, form_bbox.bottom, form_bbox.right, form_bbox.top);
- ClipPath.Transform(&form_matrix);
- if (pParentMatrix) {
- ClipPath.Transform(pParentMatrix);
- }
- form_bbox.Transform(&form_matrix);
- if (pParentMatrix) {
- form_bbox.Transform(pParentMatrix);
- }
- }
- CPDF_Dictionary* pResources = pForm->m_pFormDict->GetDict(FX_BSTRC("Resources"));
- m_pParser = FX_NEW CPDF_StreamContentParser;
- m_pParser->Initialize();
- m_pParser->PrepareParse(pForm->m_pDocument, pForm->m_pPageResources, pForm->m_pResources, pParentMatrix, pForm,
- pResources, &form_bbox, pOptions, pGraphicStates, level);
- m_pParser->m_pCurStates->m_CTM = form_matrix;
- m_pParser->m_pCurStates->m_ParentMatrix = form_matrix;
- if (ClipPath.NotNull()) {
- m_pParser->m_pCurStates->m_ClipPath.AppendPath(ClipPath, FXFILL_WINDING, TRUE);
- }
- if (pForm->m_Transparency & PDFTRANS_GROUP) {
- CPDF_GeneralStateData* pData = m_pParser->m_pCurStates->m_GeneralState.GetModify();
- pData->m_BlendType = FXDIB_BLEND_NORMAL;
- pData->m_StrokeAlpha = 1.0f;
- pData->m_FillAlpha = 1.0f;
- pData->m_pSoftMask = NULL;
- }
- m_nStreams = 0;
- m_pSingleStream = FX_NEW CPDF_StreamAcc;
- if (pForm->m_pDocument) {
- m_pSingleStream->LoadAllData(pForm->m_pFormStream, FALSE);
- } else {
- m_pSingleStream->LoadAllData(pForm->m_pFormStream, FALSE);
- }
- m_pData = (FX_LPBYTE)m_pSingleStream->GetData();
- m_Size = m_pSingleStream->GetSize();
- m_Status = ToBeContinued;
- m_InternalStage = PAGEPARSE_STAGE_PARSE;
- m_CurrentOffset = 0;
-}
-void CPDF_ContentParser::Continue(IFX_Pause* pPause)
-{
- int steps = 0;
- while (m_Status == ToBeContinued) {
- if (m_InternalStage == PAGEPARSE_STAGE_GETCONTENT) {
- if (m_CurrentOffset == m_nStreams) {
- if (m_pStreamArray) {
- m_Size = 0;
- FX_DWORD i;
- for (i = 0; i < m_nStreams; i ++) {
- FX_DWORD size = m_pStreamArray[i]->GetSize();
- if (m_Size + size + 1 <= m_Size) {
- m_Status = Done;
- return;
- }
- m_Size += size + 1;
- }
- m_pData = FX_Alloc(FX_BYTE, m_Size);
- if (!m_pData) {
- m_Status = Done;
- return;
- }
- FX_DWORD pos = 0;
- for (i = 0; i < m_nStreams; i ++) {
- FXSYS_memcpy32(m_pData + pos, m_pStreamArray[i]->GetData(), m_pStreamArray[i]->GetSize());
- pos += m_pStreamArray[i]->GetSize() + 1;
- m_pData[pos - 1] = ' ';
- delete m_pStreamArray[i];
- }
- FX_Free(m_pStreamArray);
- m_pStreamArray = NULL;
- } else {
- m_pData = (FX_LPBYTE)m_pSingleStream->GetData();
- m_Size = m_pSingleStream->GetSize();
- }
- m_InternalStage = PAGEPARSE_STAGE_PARSE;
- m_CurrentOffset = 0;
- } else {
- CPDF_Array* pContent = m_pObjects->m_pFormDict->GetArray(FX_BSTRC("Contents"));
- m_pStreamArray[m_CurrentOffset] = FX_NEW CPDF_StreamAcc;
- CPDF_Stream* pStreamObj = (CPDF_Stream*)pContent->GetElementValue(m_CurrentOffset);
- m_pStreamArray[m_CurrentOffset]->LoadAllData(pStreamObj, FALSE);
- m_CurrentOffset ++;
- }
- }
- if (m_InternalStage == PAGEPARSE_STAGE_PARSE) {
- if (m_pParser == NULL) {
- m_pParser = FX_NEW CPDF_StreamContentParser;
- m_pParser->Initialize();
- m_pParser->PrepareParse(m_pObjects->m_pDocument, m_pObjects->m_pPageResources, NULL, NULL, m_pObjects,
- m_pObjects->m_pResources, &m_pObjects->m_BBox, &m_Options, NULL, 0);
- m_pParser->m_pCurStates->m_ColorState.GetModify()->Default();
- }
- if (m_CurrentOffset >= m_Size) {
- m_InternalStage = PAGEPARSE_STAGE_CHECKCLIP;
- } else {
- m_CurrentOffset += m_pParser->Parse(m_pData + m_CurrentOffset, m_Size - m_CurrentOffset, PARSE_STEP_LIMIT);
- if (m_pParser->m_bAbort) {
- m_InternalStage = PAGEPARSE_STAGE_CHECKCLIP;
- continue;
- }
- }
- }
- if (m_InternalStage == PAGEPARSE_STAGE_CHECKCLIP) {
- if (m_pType3Char) {
- m_pType3Char->m_bColored = m_pParser->m_bColored;
- m_pType3Char->m_Width = FXSYS_round(m_pParser->m_Type3Data[0] * 1000);
- m_pType3Char->m_BBox.left = FXSYS_round(m_pParser->m_Type3Data[2] * 1000);
- m_pType3Char->m_BBox.bottom = FXSYS_round(m_pParser->m_Type3Data[3] * 1000);
- m_pType3Char->m_BBox.right = FXSYS_round(m_pParser->m_Type3Data[4] * 1000);
- m_pType3Char->m_BBox.top = FXSYS_round(m_pParser->m_Type3Data[5] * 1000);
- }
- FX_POSITION pos = m_pObjects->m_ObjectList.GetHeadPosition();
- while (pos) {
- CPDF_PageObject* pObj = (CPDF_PageObject*)m_pObjects->m_ObjectList.GetNext(pos);
- if (pObj->m_ClipPath.IsNull()) {
- continue;
- }
- if (pObj->m_ClipPath.GetPathCount() != 1) {
- continue;
- }
- if (pObj->m_ClipPath.GetTextCount()) {
- continue;
- }
- CPDF_Path ClipPath = pObj->m_ClipPath.GetPath(0);
- if (!ClipPath.IsRect() || pObj->m_Type == PDFPAGE_SHADING) {
- continue;
- }
- CFX_FloatRect old_rect(ClipPath.GetPointX(0), ClipPath.GetPointY(0),
- ClipPath.GetPointX(2), ClipPath.GetPointY(2));
- CFX_FloatRect obj_rect(pObj->m_Left, pObj->m_Bottom, pObj->m_Right, pObj->m_Top);
- if (old_rect.Contains(obj_rect)) {
- pObj->m_ClipPath.SetNull();
- }
- }
- m_Status = Done;
- return;
- }
- steps ++;
- if (pPause && pPause->NeedToPauseNow()) {
- break;
- }
- }
-}
-int CPDF_ContentParser::EstimateProgress()
-{
- if (m_Status == Ready) {
- return 0;
- }
- if (m_Status == Done) {
- return 100;
- }
- if (m_InternalStage == PAGEPARSE_STAGE_GETCONTENT) {
- return 10;
- }
- if (m_InternalStage == PAGEPARSE_STAGE_CHECKCLIP) {
- return 90;
- }
- return 10 + 80 * m_CurrentOffset / m_Size;
-}
+// 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/fxcodec/fx_codec.h"
+#include "pageint.h"
+#include <limits.h>
+extern const FX_LPCSTR _PDF_OpCharType =
+ "IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII"
+ "IIVIIIIVIIVIIIIIVVIIIIIIIIIIIIII"
+ "IIVVVVVVIVVVVVVIVVVVVIIVVIIIIIII"
+ "IIVVVVVVVVVVVVVVIVVVIIVVIVVIIIII"
+ "IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII"
+ "IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII"
+ "IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII"
+ "IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII";
+FX_BOOL _PDF_HasInvalidOpChar(FX_LPCSTR op)
+{
+ if(!op) {
+ return FALSE;
+ }
+ FX_BYTE ch;
+ while((ch = *op++)) {
+ if(_PDF_OpCharType[ch] == 'I') {
+ return TRUE;
+ }
+ }
+ return FALSE;
+}
+FX_DWORD CPDF_StreamContentParser::Parse(FX_LPCBYTE pData, FX_DWORD dwSize, FX_DWORD max_cost)
+{
+ if (m_Level > _FPDF_MAX_FORM_LEVEL_) {
+ return dwSize;
+ }
+ FX_DWORD InitObjCount = m_pObjectList->CountObjects();
+ CPDF_StreamParser syntax(pData, dwSize);
+ m_pSyntax = &syntax;
+ m_CompatCount = 0;
+ while (1) {
+ FX_DWORD cost = m_pObjectList->CountObjects() - InitObjCount;
+ if (max_cost && cost >= max_cost) {
+ break;
+ }
+ switch (syntax.ParseNextElement()) {
+ case CPDF_StreamParser::EndOfData:
+ return m_pSyntax->GetPos();
+ case CPDF_StreamParser::Keyword:
+ if(!OnOperator((char*)syntax.GetWordBuf()) && _PDF_HasInvalidOpChar((char*)syntax.GetWordBuf())) {
+ m_bAbort = TRUE;
+ }
+ if (m_bAbort) {
+ return m_pSyntax->GetPos();
+ }
+ ClearAllParams();
+ break;
+ case CPDF_StreamParser::Number:
+ AddNumberParam((char*)syntax.GetWordBuf(), syntax.GetWordSize());
+ break;
+ case CPDF_StreamParser::Name:
+ AddNameParam((FX_LPCSTR)syntax.GetWordBuf() + 1, syntax.GetWordSize() - 1);
+ break;
+ default:
+ AddObjectParam(syntax.GetObject());
+ }
+ }
+ return m_pSyntax->GetPos();
+}
+void _PDF_ReplaceAbbr(CPDF_Object* pObj);
+void CPDF_StreamContentParser::Handle_BeginImage()
+{
+ FX_FILESIZE savePos = m_pSyntax->GetPos();
+ CPDF_Dictionary* pDict = CPDF_Dictionary::Create();
+ 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 != FX_BSTRC("ID")) {
+ m_pSyntax->SetPos(savePos);
+ pDict->Release();
+ return;
+ }
+ }
+ if (type != CPDF_StreamParser::Name) {
+ break;
+ }
+ CFX_ByteString key((FX_LPCSTR)m_pSyntax->GetWordBuf() + 1, m_pSyntax->GetWordSize() - 1);
+ CPDF_Object* pObj = m_pSyntax->ReadNextObject();
+ if (!key.IsEmpty()) {
+ pDict->SetAt(key, pObj, m_pDocument);
+ } else {
+ pObj->Release();
+ }
+ }
+ _PDF_ReplaceAbbr(pDict);
+ CPDF_Object* pCSObj = NULL;
+ if (pDict->KeyExist(FX_BSTRC("ColorSpace"))) {
+ pCSObj = pDict->GetElementValue(FX_BSTRC("ColorSpace"));
+ if (pCSObj->GetType() == PDFOBJ_NAME) {
+ CFX_ByteString name = pCSObj->GetString();
+ if (name != FX_BSTRC("DeviceRGB") && name != FX_BSTRC("DeviceGray") && name != FX_BSTRC("DeviceCMYK")) {
+ pCSObj = FindResourceObj(FX_BSTRC("ColorSpace"), name);
+ if (pCSObj && !pCSObj->GetObjNum()) {
+ pCSObj = pCSObj->Clone();
+ pDict->SetAt(FX_BSTRC("ColorSpace"), pCSObj, m_pDocument);
+ }
+ }
+ }
+ }
+ 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(FX_BSTRC("Subtype"), FX_BSTRC("Image"));
+ CPDF_ImageObject *pImgObj = AddImage(pStream, NULL, TRUE);
+ if (!pImgObj) {
+ if (pStream) {
+ pStream->Release();
+ } else {
+ pDict->Release();
+ }
+ }
+}
+void CPDF_StreamContentParser::ParsePathObject()
+{
+ FX_FLOAT params[6] = {0};
+ 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 'm':
+ AddPathPoint(params[0], params[1], FXPT_MOVETO);
+ nParams = 0;
+ break;
+ case 'l':
+ AddPathPoint(params[0], params[1], FXPT_LINETO);
+ nParams = 0;
+ break;
+ case 'c':
+ 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 'v':
+ 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 'y':
+ 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 'h':
+ Handle_ClosePath();
+ nParams = 0;
+ break;
+ default:
+ bProcessed = FALSE;
+ break;
+ }
+ } else if (len == 2) {
+ if (m_pSyntax->GetWordBuf()[0] == 'r' && m_pSyntax->GetWordBuf()[1] == 'e') {
+ AddPathRect(params[0], params[1], params[2], params[3]);
+ nParams = 0;
+ } else {
+ bProcessed = FALSE;
+ }
+ } else {
+ bProcessed = FALSE;
+ }
+ if (bProcessed) {
+ last_pos = m_pSyntax->GetPos();
+ }
+ break;
+ }
+ case CPDF_StreamParser::Number: {
+ if (nParams == 6) {
+ break;
+ }
+ FX_BOOL bInteger;
+ int value;
+ FX_atonum(CFX_ByteStringC(m_pSyntax->GetWordBuf(), m_pSyntax->GetWordSize()), bInteger, &value);
+ params[nParams++] = bInteger ? (FX_FLOAT)value : *(FX_FLOAT*)&value;
+ break;
+ }
+ default:
+ bProcessed = FALSE;
+ }
+ if (!bProcessed) {
+ m_pSyntax->SetPos(last_pos);
+ return;
+ }
+ }
+}
+CPDF_StreamParser::CPDF_StreamParser(const FX_BYTE* pData, FX_DWORD dwSize)
+{
+ m_pBuf = pData;
+ m_Size = dwSize;
+ m_Pos = 0;
+ m_pLastObj = NULL;
+}
+CPDF_StreamParser::~CPDF_StreamParser()
+{
+ if (m_pLastObj) {
+ m_pLastObj->Release();
+ }
+}
+FX_DWORD _DecodeAllScanlines(ICodec_ScanlineDecoder* pDecoder, FX_LPBYTE& dest_buf, FX_DWORD& dest_size)
+{
+ if (pDecoder == NULL) {
+ return (FX_DWORD) - 1;
+ }
+ int ncomps = pDecoder->CountComps();
+ int bpc = pDecoder->GetBPC();
+ int width = pDecoder->GetWidth();
+ int height = pDecoder->GetHeight();
+ int pitch = (width * ncomps * bpc + 7) / 8;
+ if (height == 0 || pitch > (1 << 30) / height) {
+ delete pDecoder;
+ return -1;
+ }
+ dest_size = pitch * height;
+ dest_buf = FX_Alloc( FX_BYTE, dest_size);
+ for (int row = 0; row < height; row ++) {
+ FX_LPBYTE pLine = pDecoder->GetScanline(row);
+ if (pLine == NULL) {
+ break;
+ }
+ FXSYS_memcpy32(dest_buf + row * pitch, pLine, pitch);
+ }
+ FX_DWORD srcoff = pDecoder->GetSrcOffset();
+ delete pDecoder;
+ return srcoff;
+}
+ICodec_ScanlineDecoder* FPDFAPI_CreateFaxDecoder(FX_LPCBYTE src_buf, FX_DWORD src_size, int width, int height,
+ const CPDF_Dictionary* pParams);
+FX_DWORD _A85Decode(const FX_BYTE* src_buf, FX_DWORD src_size, FX_LPBYTE& dest_buf, FX_DWORD& dest_size);
+FX_DWORD _HexDecode(const FX_BYTE* src_buf, FX_DWORD src_size, FX_LPBYTE& dest_buf, FX_DWORD& dest_size);
+FX_DWORD FPDFAPI_FlateOrLZWDecode(FX_BOOL bLZW, const FX_BYTE* src_buf, FX_DWORD src_size, CPDF_Dictionary* pParams,
+ FX_DWORD estimated_size, FX_LPBYTE& dest_buf, FX_DWORD& dest_size);
+FX_DWORD PDF_DecodeInlineStream(const FX_BYTE* src_buf, FX_DWORD limit,
+ int width, int height, CFX_ByteString& decoder,
+ CPDF_Dictionary* pParam, FX_LPBYTE& dest_buf, FX_DWORD& dest_size)
+{
+ if (decoder == FX_BSTRC("CCITTFaxDecode") || decoder == FX_BSTRC("CCF")) {
+ ICodec_ScanlineDecoder* pDecoder = FPDFAPI_CreateFaxDecoder(src_buf, limit, width, height, pParam);
+ return _DecodeAllScanlines(pDecoder, dest_buf, dest_size);
+ } else if (decoder == FX_BSTRC("ASCII85Decode") || decoder == FX_BSTRC("A85")) {
+ return _A85Decode(src_buf, limit, dest_buf, dest_size);
+ } else if (decoder == FX_BSTRC("ASCIIHexDecode") || decoder == FX_BSTRC("AHx")) {
+ return _HexDecode(src_buf, limit, dest_buf, dest_size);
+ } else if (decoder == FX_BSTRC("FlateDecode") || decoder == FX_BSTRC("Fl")) {
+ return FPDFAPI_FlateOrLZWDecode(FALSE, src_buf, limit, pParam, dest_size, dest_buf, dest_size);
+ } else if (decoder == FX_BSTRC("LZWDecode") || decoder == FX_BSTRC("LZW")) {
+ return FPDFAPI_FlateOrLZWDecode(TRUE, src_buf, limit, pParam, 0, dest_buf, dest_size);
+ } else if (decoder == FX_BSTRC("DCTDecode") || decoder == FX_BSTRC("DCT")) {
+ ICodec_ScanlineDecoder* pDecoder = CPDF_ModuleMgr::Get()->GetJpegModule()->CreateDecoder(
+ src_buf, limit, width, height, 0, pParam ? pParam->GetInteger(FX_BSTRC("ColorTransform"), 1) : 1);
+ return _DecodeAllScanlines(pDecoder, dest_buf, dest_size);
+ } else if (decoder == FX_BSTRC("RunLengthDecode") || decoder == FX_BSTRC("RL")) {
+ return RunLengthDecode(src_buf, limit, dest_buf, dest_size);
+ }
+ dest_size = 0;
+ dest_buf = 0;
+ return (FX_DWORD) - 1;
+}
+extern const FX_LPCSTR _PDF_CharType;
+CPDF_Stream* CPDF_StreamParser::ReadInlineStream(CPDF_Document* pDoc, CPDF_Dictionary* pDict, CPDF_Object* pCSObj, FX_BOOL bDecode)
+{
+ if (m_Pos == m_Size) {
+ return NULL;
+ }
+ if (_PDF_CharType[m_pBuf[m_Pos]] == 'W') {
+ m_Pos ++;
+ }
+ CFX_ByteString Decoder;
+ CPDF_Dictionary* pParam = NULL;
+ CPDF_Object* pFilter = pDict->GetElementValue(FX_BSTRC("Filter"));
+ if (pFilter == NULL) {
+ } else if (pFilter->GetType() == PDFOBJ_ARRAY) {
+ Decoder = ((CPDF_Array*)pFilter)->GetString(0);
+ CPDF_Array* pParams = pDict->GetArray(FX_BSTRC("DecodeParms"));
+ if (pParams) {
+ pParam = pParams->GetDict(0);
+ }
+ } else {
+ Decoder = pFilter->GetString();
+ pParam = pDict->GetDict(FX_BSTRC("DecodeParms"));
+ }
+ FX_DWORD width = pDict->GetInteger(FX_BSTRC("Width"));
+ FX_DWORD height = pDict->GetInteger(FX_BSTRC("Height"));
+ FX_DWORD OrigSize = 0;
+ if (pCSObj != NULL) {
+ FX_DWORD bpc = pDict->GetInteger(FX_BSTRC("BitsPerComponent"));
+ FX_DWORD nComponents = 1;
+ CPDF_ColorSpace* pCS = pDoc->LoadColorSpace(pCSObj);
+ if (pCS == NULL) {
+ nComponents = 3;
+ } else {
+ nComponents = pCS->CountComponents();
+ pDoc->GetPageData()->ReleaseColorSpace(pCSObj);
+ }
+ FX_DWORD pitch = width;
+ if (bpc && pitch > INT_MAX / bpc) {
+ return NULL;
+ }
+ pitch *= bpc;
+ if (nComponents && pitch > INT_MAX / nComponents) {
+ return NULL;
+ }
+ pitch *= nComponents;
+ if (pitch > INT_MAX - 7) {
+ return NULL;
+ }
+ pitch += 7;
+ pitch /= 8;
+ OrigSize = pitch;
+ } else {
+ if (width > INT_MAX - 7) {
+ return NULL;
+ }
+ OrigSize = ((width + 7) / 8);
+ }
+ if (height && OrigSize > INT_MAX / height) {
+ return NULL;
+ }
+ OrigSize *= height;
+ FX_LPBYTE pData = NULL;
+ FX_DWORD dwStreamSize;
+ if (Decoder.IsEmpty()) {
+ if (OrigSize > m_Size - m_Pos) {
+ OrigSize = m_Size - m_Pos;
+ }
+ pData = FX_Alloc(FX_BYTE, OrigSize);
+ FXSYS_memcpy32(pData, m_pBuf + m_Pos, OrigSize);
+ dwStreamSize = OrigSize;
+ m_Pos += OrigSize;
+ } else {
+ FX_DWORD dwDestSize = OrigSize;
+ dwStreamSize = PDF_DecodeInlineStream(m_pBuf + m_Pos, m_Size - m_Pos, width, height, Decoder, pParam,
+ pData, dwDestSize);
+ if ((int)dwStreamSize < 0) {
+ return NULL;
+ }
+ if (bDecode) {
+ m_Pos += dwStreamSize;
+ dwStreamSize = dwDestSize;
+ if (pFilter->GetType() == PDFOBJ_ARRAY) {
+ ((CPDF_Array*)pFilter)->RemoveAt(0);
+ CPDF_Array* pParams = pDict->GetArray(FX_BSTRC("DecodeParms"));
+ if (pParams) {
+ pParams->RemoveAt(0);
+ }
+ } else {
+ pDict->RemoveAt(FX_BSTRC("Filter"));
+ pDict->RemoveAt(FX_BSTRC("DecodeParms"));
+ }
+ } else {
+ if (pData) {
+ FX_Free(pData);
+ }
+ FX_DWORD dwSavePos = m_Pos;
+ m_Pos += dwStreamSize;
+ while (1) {
+ FX_DWORD dwPrevPos = m_Pos;
+ CPDF_StreamParser::SyntaxType type = ParseNextElement();
+ if (type == CPDF_StreamParser::EndOfData) {
+ break;
+ }
+ if (type != CPDF_StreamParser::Keyword) {
+ dwStreamSize += m_Pos - dwPrevPos;
+ continue;
+ }
+ if (GetWordSize() == 2 && GetWordBuf()[0] == 'E' &&
+ GetWordBuf()[1] == 'I') {
+ m_Pos = dwPrevPos;
+ break;
+ }
+ dwStreamSize += m_Pos - dwPrevPos;
+ }
+ m_Pos = dwSavePos;
+ pData = FX_Alloc(FX_BYTE, dwStreamSize);
+ FXSYS_memcpy32(pData, m_pBuf + m_Pos, dwStreamSize);
+ m_Pos += dwStreamSize;
+ }
+ }
+ pDict->SetAtInteger(FX_BSTRC("Length"), (int)dwStreamSize);
+ return CPDF_Stream::Create(pData, dwStreamSize, pDict);
+}
+#define MAX_WORD_BUFFER 256
+#define MAX_STRING_LENGTH 32767
+#define FXDWORD_TRUE FXDWORD_FROM_LSBFIRST(0x65757274)
+#define FXDWORD_NULL FXDWORD_FROM_LSBFIRST(0x6c6c756e)
+#define FXDWORD_FALS FXDWORD_FROM_LSBFIRST(0x736c6166)
+CPDF_StreamParser::SyntaxType CPDF_StreamParser::ParseNextElement()
+{
+ if (m_pLastObj) {
+ m_pLastObj->Release();
+ m_pLastObj = NULL;
+ }
+ m_WordSize = 0;
+ FX_BOOL bIsNumber = TRUE;
+ if (m_Pos >= m_Size) {
+ return EndOfData;
+ }
+ int ch = m_pBuf[m_Pos++];
+ int type = _PDF_CharType[ch];
+ while (1) {
+ while (type == 'W') {
+ if (m_Size <= m_Pos) {
+ return EndOfData;
+ }
+ ch = m_pBuf[m_Pos++];
+ type = _PDF_CharType[ch];
+ }
+ if (ch != '%') {
+ break;
+ }
+ while (1) {
+ if (m_Size <= m_Pos) {
+ return EndOfData;
+ }
+ ch = m_pBuf[m_Pos++];
+ if (ch == '\r' || ch == '\n') {
+ break;
+ }
+ }
+ type = _PDF_CharType[ch];
+ }
+ if (type == 'D' && ch != '/') {
+ m_Pos --;
+ m_pLastObj = ReadNextObject();
+ return Others;
+ }
+ while (1) {
+ if (m_WordSize < MAX_WORD_BUFFER) {
+ m_WordBuffer[m_WordSize++] = ch;
+ }
+ if (type != 'N') {
+ bIsNumber = FALSE;
+ }
+ if (m_Size <= m_Pos) {
+ break;
+ }
+ ch = m_pBuf[m_Pos++];
+ type = _PDF_CharType[ch];
+ if (type == 'D' || type == 'W') {
+ m_Pos --;
+ break;
+ }
+ }
+ m_WordBuffer[m_WordSize] = 0;
+ if (bIsNumber) {
+ return Number;
+ }
+ if (m_WordBuffer[0] == '/') {
+ return Name;
+ }
+ if (m_WordSize == 4) {
+ if (*(FX_DWORD*)m_WordBuffer == FXDWORD_TRUE) {
+ m_pLastObj = CPDF_Boolean::Create(TRUE);
+ return Others;
+ }
+ if (*(FX_DWORD*)m_WordBuffer == FXDWORD_NULL) {
+ m_pLastObj = CPDF_Null::Create();
+ return Others;
+ }
+ } else if (m_WordSize == 5) {
+ if (*(FX_DWORD*)m_WordBuffer == FXDWORD_FALS && m_WordBuffer[4] == 'e') {
+ m_pLastObj = CPDF_Boolean::Create(FALSE);
+ return Others;
+ }
+ }
+ return Keyword;
+}
+void CPDF_StreamParser::SkipPathObject()
+{
+ FX_DWORD command_startpos = m_Pos;
+ if (m_Pos >= m_Size) {
+ return;
+ }
+ int ch = m_pBuf[m_Pos++];
+ int type = _PDF_CharType[ch];
+ while (1) {
+ while (type == 'W') {
+ if (m_Pos >= m_Size) {
+ return;
+ }
+ ch = m_pBuf[m_Pos++];
+ type = _PDF_CharType[ch];
+ }
+ if (type != 'N') {
+ m_Pos = command_startpos;
+ return;
+ }
+ while (1) {
+ while (type != 'W') {
+ if (m_Pos >= m_Size) {
+ return;
+ }
+ ch = m_pBuf[m_Pos++];
+ type = _PDF_CharType[ch];
+ }
+ while (type == 'W') {
+ if (m_Pos >= m_Size) {
+ return;
+ }
+ ch = m_pBuf[m_Pos++];
+ type = _PDF_CharType[ch];
+ }
+ if (type == 'N') {
+ continue;
+ }
+ FX_DWORD op_startpos = m_Pos - 1;
+ while (type != 'W' && type != 'D') {
+ if (m_Pos >= m_Size) {
+ return;
+ }
+ ch = m_pBuf[m_Pos++];
+ type = _PDF_CharType[ch];
+ }
+ if (m_Pos - op_startpos == 2) {
+ int op = m_pBuf[op_startpos];
+ if (op == 'm' || op == 'l' || op == 'c' || op == 'v' || op == 'y') {
+ command_startpos = m_Pos;
+ break;
+ }
+ } else if (m_Pos - op_startpos == 3) {
+ if (m_pBuf[op_startpos] == 'r' && m_pBuf[op_startpos + 1] == 'e') {
+ command_startpos = m_Pos;
+ break;
+ }
+ }
+ m_Pos = command_startpos;
+ return;
+ }
+ }
+}
+CPDF_Object* CPDF_StreamParser::ReadNextObject(FX_BOOL bAllowNestedArray, FX_BOOL bInArray)
+{
+ FX_BOOL bIsNumber;
+ GetNextWord(bIsNumber);
+ if (m_WordSize == 0) {
+ return NULL;
+ }
+ if (bIsNumber) {
+ m_WordBuffer[m_WordSize] = 0;
+ return CPDF_Number::Create(CFX_ByteStringC(m_WordBuffer, m_WordSize));
+ }
+ int first_char = m_WordBuffer[0];
+ if (first_char == '/') {
+ return CPDF_Name::Create(PDF_NameDecode(CFX_ByteStringC(m_WordBuffer + 1, m_WordSize - 1)));
+ }
+ if (first_char == '(') {
+ return CPDF_String::Create(ReadString());
+ }
+ if (first_char == '<') {
+ if (m_WordSize == 1) {
+ return CPDF_String::Create(ReadHexString(), TRUE);
+ }
+ CPDF_Dictionary* pDict = CPDF_Dictionary::Create();
+ while (1) {
+ GetNextWord(bIsNumber);
+ if (m_WordSize == 0) {
+ pDict->Release();
+ return NULL;
+ }
+ if (m_WordSize == 2 && m_WordBuffer[0] == '>') {
+ break;
+ }
+ if (m_WordBuffer[0] != '/') {
+ pDict->Release();
+ return NULL;
+ }
+ CFX_ByteString key = PDF_NameDecode(CFX_ByteStringC(m_WordBuffer + 1, m_WordSize - 1));
+ CPDF_Object* pObj = ReadNextObject(TRUE);
+ if (pObj == NULL) {
+ if (pDict) {
+ pDict->Release();
+ }
+ return NULL;
+ }
+ if (!key.IsEmpty()) {
+ pDict->SetAt(key, pObj);
+ } else {
+ pObj->Release();
+ }
+ }
+ return pDict;
+ }
+ if (first_char == '[') {
+ if (!bAllowNestedArray && bInArray) {
+ return NULL;
+ }
+ CPDF_Array* pArray = CPDF_Array::Create();
+ while (1) {
+ CPDF_Object* pObj = ReadNextObject(bAllowNestedArray, TRUE);
+ if (pObj == NULL) {
+ if (m_WordSize == 0 || m_WordBuffer[0] == ']') {
+ return pArray;
+ }
+ if (m_WordBuffer[0] == '[') {
+ continue;
+ }
+ } else {
+ pArray->Add(pObj);
+ }
+ }
+ }
+ if (m_WordSize == 4) {
+ if (*(FX_DWORD*)m_WordBuffer == FXDWORD_TRUE) {
+ return CPDF_Boolean::Create(TRUE);
+ }
+ if (*(FX_DWORD*)m_WordBuffer == FXDWORD_NULL) {
+ return CPDF_Null::Create();
+ }
+ } else if (m_WordSize == 5) {
+ if (*(FX_DWORD*)m_WordBuffer == FXDWORD_FALS && m_WordBuffer[4] == 'e') {
+ return CPDF_Boolean::Create(FALSE);
+ }
+ }
+ return NULL;
+}
+void CPDF_StreamParser::GetNextWord(FX_BOOL& bIsNumber)
+{
+ m_WordSize = 0;
+ bIsNumber = TRUE;
+ if (m_Size <= m_Pos) {
+ return;
+ }
+ int ch = m_pBuf[m_Pos++];
+ int type = _PDF_CharType[ch];
+ while (1) {
+ while (type == 'W') {
+ if (m_Size <= m_Pos) {
+ return;
+ }
+ ch = m_pBuf[m_Pos++];
+ type = _PDF_CharType[ch];
+ }
+ if (ch != '%') {
+ break;
+ }
+ while (1) {
+ if (m_Size <= m_Pos) {
+ return;
+ }
+ ch = m_pBuf[m_Pos++];
+ if (ch == '\r' || ch == '\n') {
+ break;
+ }
+ }
+ type = _PDF_CharType[ch];
+ }
+ if (type == 'D') {
+ bIsNumber = FALSE;
+ m_WordBuffer[m_WordSize++] = ch;
+ if (ch == '/') {
+ while (1) {
+ if (m_Size <= m_Pos) {
+ return;
+ }
+ ch = m_pBuf[m_Pos++];
+ type = _PDF_CharType[ch];
+ if (type != 'R' && type != 'N') {
+ m_Pos --;
+ return;
+ }
+ if (m_WordSize < MAX_WORD_BUFFER) {
+ m_WordBuffer[m_WordSize++] = ch;
+ }
+ }
+ } else if (ch == '<') {
+ if (m_Size <= m_Pos) {
+ return;
+ }
+ ch = m_pBuf[m_Pos++];
+ if (ch == '<') {
+ m_WordBuffer[m_WordSize++] = ch;
+ } else {
+ m_Pos --;
+ }
+ } else if (ch == '>') {
+ if (m_Size <= m_Pos) {
+ return;
+ }
+ ch = m_pBuf[m_Pos++];
+ if (ch == '>') {
+ m_WordBuffer[m_WordSize++] = ch;
+ } else {
+ m_Pos --;
+ }
+ }
+ return;
+ }
+ while (1) {
+ if (m_WordSize < MAX_WORD_BUFFER) {
+ m_WordBuffer[m_WordSize++] = ch;
+ }
+ if (type != 'N') {
+ bIsNumber = FALSE;
+ }
+ if (m_Size <= m_Pos) {
+ return;
+ }
+ ch = m_pBuf[m_Pos++];
+ type = _PDF_CharType[ch];
+ if (type == 'D' || type == 'W') {
+ m_Pos --;
+ break;
+ }
+ }
+}
+CFX_ByteString CPDF_StreamParser::ReadString()
+{
+ if (m_Size <= m_Pos) {
+ return CFX_ByteString();
+ }
+ int ch = m_pBuf[m_Pos++];
+ CFX_ByteTextBuf buf;
+ int parlevel = 0;
+ int status = 0, iEscCode = 0;
+ while (1) {
+ switch (status) {
+ case 0:
+ if (ch == ')') {
+ if (parlevel == 0) {
+ if (buf.GetLength() > MAX_STRING_LENGTH) {
+ return CFX_ByteString(buf.GetBuffer(), MAX_STRING_LENGTH);
+ }
+ return buf.GetByteString();
+ }
+ parlevel --;
+ buf.AppendChar(')');
+ } else if (ch == '(') {
+ parlevel ++;
+ buf.AppendChar('(');
+ } else if (ch == '\\') {
+ status = 1;
+ } else {
+ buf.AppendChar((char)ch);
+ }
+ break;
+ case 1:
+ if (ch >= '0' && ch <= '7') {
+ iEscCode = ch - '0';
+ status = 2;
+ break;
+ }
+ if (ch == 'n') {
+ buf.AppendChar('\n');
+ } else if (ch == 'r') {
+ buf.AppendChar('\r');
+ } else if (ch == 't') {
+ buf.AppendChar('\t');
+ } else if (ch == 'b') {
+ buf.AppendChar('\b');
+ } else if (ch == 'f') {
+ buf.AppendChar('\f');
+ } else if (ch == '\r') {
+ status = 4;
+ break;
+ } else if (ch == '\n') {
+ } else {
+ buf.AppendChar(ch);
+ }
+ status = 0;
+ break;
+ case 2:
+ if (ch >= '0' && ch <= '7') {
+ iEscCode = iEscCode * 8 + ch - '0';
+ status = 3;
+ } else {
+ buf.AppendChar(iEscCode);
+ status = 0;
+ continue;
+ }
+ break;
+ case 3:
+ if (ch >= '0' && ch <= '7') {
+ iEscCode = iEscCode * 8 + ch - '0';
+ buf.AppendChar(iEscCode);
+ status = 0;
+ } else {
+ buf.AppendChar(iEscCode);
+ status = 0;
+ continue;
+ }
+ break;
+ case 4:
+ status = 0;
+ if (ch != '\n') {
+ continue;
+ }
+ break;
+ }
+ if (m_Size <= m_Pos) {
+ break;
+ }
+ ch = m_pBuf[m_Pos++];
+ }
+ if (m_Size > m_Pos) {
+ ch = m_pBuf[m_Pos++];
+ }
+ if (buf.GetLength() > MAX_STRING_LENGTH) {
+ return CFX_ByteString(buf.GetBuffer(), MAX_STRING_LENGTH);
+ }
+ return buf.GetByteString();
+}
+CFX_ByteString CPDF_StreamParser::ReadHexString()
+{
+ if (m_Size <= m_Pos) {
+ return CFX_ByteString();
+ }
+ int ch = m_pBuf[m_Pos++];
+ CFX_ByteTextBuf buf;
+ FX_BOOL bFirst = TRUE;
+ int code = 0;
+ while (1) {
+ if (ch == '>') {
+ break;
+ }
+ 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 (m_Size <= m_Pos) {
+ break;
+ }
+ ch = m_pBuf[m_Pos++];
+ }
+ if (!bFirst) {
+ buf.AppendChar((char)code);
+ }
+ if (buf.GetLength() > MAX_STRING_LENGTH) {
+ return CFX_ByteString(buf.GetBuffer(), MAX_STRING_LENGTH);
+ }
+ return buf.GetByteString();
+}
+#define PAGEPARSE_STAGE_GETCONTENT 1
+#define PAGEPARSE_STAGE_PARSE 2
+#define PAGEPARSE_STAGE_CHECKCLIP 3
+CPDF_ContentParser::CPDF_ContentParser()
+{
+ m_pParser = NULL;
+ m_pStreamArray = NULL;
+ m_pSingleStream = NULL;
+ m_pData = NULL;
+ m_Status = Ready;
+ m_pType3Char = NULL;
+}
+CPDF_ContentParser::~CPDF_ContentParser()
+{
+ Clear();
+}
+void CPDF_ContentParser::Clear()
+{
+ if (m_pParser) {
+ delete m_pParser;
+ }
+ if (m_pSingleStream) {
+ delete m_pSingleStream;
+ }
+ if (m_pStreamArray) {
+ for (FX_DWORD i = 0; i < m_nStreams; i ++)
+ if (m_pStreamArray[i]) {
+ delete m_pStreamArray[i];
+ }
+ FX_Free(m_pStreamArray);
+ }
+ if (m_pData && m_pSingleStream == NULL) {
+ FX_Free((void*)m_pData);
+ }
+ m_pParser = NULL;
+ m_pStreamArray = NULL;
+ m_pSingleStream = NULL;
+ m_pData = NULL;
+ m_Status = Ready;
+}
+void CPDF_ContentParser::Start(CPDF_Page* pPage, CPDF_ParseOptions* pOptions)
+{
+ if (m_Status != Ready || pPage == NULL || pPage->m_pDocument == NULL || pPage->m_pFormDict == NULL) {
+ m_Status = Done;
+ return;
+ }
+ m_pObjects = pPage;
+ m_bForm = FALSE;
+ if (pOptions) {
+ m_Options = *pOptions;
+ }
+ m_Status = ToBeContinued;
+ m_InternalStage = PAGEPARSE_STAGE_GETCONTENT;
+ m_CurrentOffset = 0;
+ CPDF_Object* pContent = pPage->m_pFormDict->GetElementValue(FX_BSTRC("Contents"));
+ if (pContent == NULL) {
+ m_Status = Done;
+ return;
+ }
+ if (pContent->GetType() == PDFOBJ_STREAM) {
+ m_nStreams = 0;
+ m_pSingleStream = FX_NEW CPDF_StreamAcc;
+ m_pSingleStream->LoadAllData((CPDF_Stream*)pContent, FALSE);
+ } else if (pContent->GetType() == PDFOBJ_ARRAY) {
+ CPDF_Array* pArray = (CPDF_Array*)pContent;
+ m_nStreams = pArray->GetCount();
+ if (m_nStreams == 0) {
+ m_Status = Done;
+ return;
+ }
+ m_pStreamArray = FX_Alloc(CPDF_StreamAcc*, m_nStreams);
+ FXSYS_memset32(m_pStreamArray, 0, sizeof(CPDF_StreamAcc*) * m_nStreams);
+ } else {
+ m_Status = Done;
+ return;
+ }
+}
+void CPDF_ContentParser::Start(CPDF_Form* pForm, CPDF_AllStates* pGraphicStates,
+ CFX_AffineMatrix* pParentMatrix, CPDF_Type3Char* pType3Char, CPDF_ParseOptions* pOptions, int level)
+{
+ m_pType3Char = pType3Char;
+ m_pObjects = pForm;
+ m_bForm = TRUE;
+ CFX_AffineMatrix form_matrix = pForm->m_pFormDict->GetMatrix(FX_BSTRC("Matrix"));
+ if (pGraphicStates) {
+ form_matrix.Concat(pGraphicStates->m_CTM);
+ }
+ CPDF_Array* pBBox = pForm->m_pFormDict->GetArray(FX_BSTRC("BBox"));
+ CFX_FloatRect form_bbox;
+ CPDF_Path ClipPath;
+ if (pBBox) {
+ form_bbox = pBBox->GetRect();
+ ClipPath.New();
+ ClipPath.AppendRect(form_bbox.left, form_bbox.bottom, form_bbox.right, form_bbox.top);
+ ClipPath.Transform(&form_matrix);
+ if (pParentMatrix) {
+ ClipPath.Transform(pParentMatrix);
+ }
+ form_bbox.Transform(&form_matrix);
+ if (pParentMatrix) {
+ form_bbox.Transform(pParentMatrix);
+ }
+ }
+ CPDF_Dictionary* pResources = pForm->m_pFormDict->GetDict(FX_BSTRC("Resources"));
+ m_pParser = FX_NEW CPDF_StreamContentParser;
+ m_pParser->Initialize();
+ m_pParser->PrepareParse(pForm->m_pDocument, pForm->m_pPageResources, pForm->m_pResources, pParentMatrix, pForm,
+ pResources, &form_bbox, pOptions, pGraphicStates, level);
+ m_pParser->m_pCurStates->m_CTM = form_matrix;
+ m_pParser->m_pCurStates->m_ParentMatrix = form_matrix;
+ if (ClipPath.NotNull()) {
+ m_pParser->m_pCurStates->m_ClipPath.AppendPath(ClipPath, FXFILL_WINDING, TRUE);
+ }
+ if (pForm->m_Transparency & PDFTRANS_GROUP) {
+ CPDF_GeneralStateData* pData = m_pParser->m_pCurStates->m_GeneralState.GetModify();
+ pData->m_BlendType = FXDIB_BLEND_NORMAL;
+ pData->m_StrokeAlpha = 1.0f;
+ pData->m_FillAlpha = 1.0f;
+ pData->m_pSoftMask = NULL;
+ }
+ m_nStreams = 0;
+ m_pSingleStream = FX_NEW CPDF_StreamAcc;
+ if (pForm->m_pDocument) {
+ m_pSingleStream->LoadAllData(pForm->m_pFormStream, FALSE);
+ } else {
+ m_pSingleStream->LoadAllData(pForm->m_pFormStream, FALSE);
+ }
+ m_pData = (FX_LPBYTE)m_pSingleStream->GetData();
+ m_Size = m_pSingleStream->GetSize();
+ m_Status = ToBeContinued;
+ m_InternalStage = PAGEPARSE_STAGE_PARSE;
+ m_CurrentOffset = 0;
+}
+void CPDF_ContentParser::Continue(IFX_Pause* pPause)
+{
+ int steps = 0;
+ while (m_Status == ToBeContinued) {
+ if (m_InternalStage == PAGEPARSE_STAGE_GETCONTENT) {
+ if (m_CurrentOffset == m_nStreams) {
+ if (m_pStreamArray) {
+ m_Size = 0;
+ FX_DWORD i;
+ for (i = 0; i < m_nStreams; i ++) {
+ FX_DWORD size = m_pStreamArray[i]->GetSize();
+ if (m_Size + size + 1 <= m_Size) {
+ m_Status = Done;
+ return;
+ }
+ m_Size += size + 1;
+ }
+ m_pData = FX_Alloc(FX_BYTE, m_Size);
+ if (!m_pData) {
+ m_Status = Done;
+ return;
+ }
+ FX_DWORD pos = 0;
+ for (i = 0; i < m_nStreams; i ++) {
+ FXSYS_memcpy32(m_pData + pos, m_pStreamArray[i]->GetData(), m_pStreamArray[i]->GetSize());
+ pos += m_pStreamArray[i]->GetSize() + 1;
+ m_pData[pos - 1] = ' ';
+ delete m_pStreamArray[i];
+ }
+ FX_Free(m_pStreamArray);
+ m_pStreamArray = NULL;
+ } else {
+ m_pData = (FX_LPBYTE)m_pSingleStream->GetData();
+ m_Size = m_pSingleStream->GetSize();
+ }
+ m_InternalStage = PAGEPARSE_STAGE_PARSE;
+ m_CurrentOffset = 0;
+ } else {
+ CPDF_Array* pContent = m_pObjects->m_pFormDict->GetArray(FX_BSTRC("Contents"));
+ m_pStreamArray[m_CurrentOffset] = FX_NEW CPDF_StreamAcc;
+ CPDF_Stream* pStreamObj = (CPDF_Stream*)pContent->GetElementValue(m_CurrentOffset);
+ m_pStreamArray[m_CurrentOffset]->LoadAllData(pStreamObj, FALSE);
+ m_CurrentOffset ++;
+ }
+ }
+ if (m_InternalStage == PAGEPARSE_STAGE_PARSE) {
+ if (m_pParser == NULL) {
+ m_pParser = FX_NEW CPDF_StreamContentParser;
+ m_pParser->Initialize();
+ m_pParser->PrepareParse(m_pObjects->m_pDocument, m_pObjects->m_pPageResources, NULL, NULL, m_pObjects,
+ m_pObjects->m_pResources, &m_pObjects->m_BBox, &m_Options, NULL, 0);
+ m_pParser->m_pCurStates->m_ColorState.GetModify()->Default();
+ }
+ if (m_CurrentOffset >= m_Size) {
+ m_InternalStage = PAGEPARSE_STAGE_CHECKCLIP;
+ } else {
+ m_CurrentOffset += m_pParser->Parse(m_pData + m_CurrentOffset, m_Size - m_CurrentOffset, PARSE_STEP_LIMIT);
+ if (m_pParser->m_bAbort) {
+ m_InternalStage = PAGEPARSE_STAGE_CHECKCLIP;
+ continue;
+ }
+ }
+ }
+ if (m_InternalStage == PAGEPARSE_STAGE_CHECKCLIP) {
+ if (m_pType3Char) {
+ m_pType3Char->m_bColored = m_pParser->m_bColored;
+ m_pType3Char->m_Width = FXSYS_round(m_pParser->m_Type3Data[0] * 1000);
+ m_pType3Char->m_BBox.left = FXSYS_round(m_pParser->m_Type3Data[2] * 1000);
+ m_pType3Char->m_BBox.bottom = FXSYS_round(m_pParser->m_Type3Data[3] * 1000);
+ m_pType3Char->m_BBox.right = FXSYS_round(m_pParser->m_Type3Data[4] * 1000);
+ m_pType3Char->m_BBox.top = FXSYS_round(m_pParser->m_Type3Data[5] * 1000);
+ }
+ FX_POSITION pos = m_pObjects->m_ObjectList.GetHeadPosition();
+ while (pos) {
+ CPDF_PageObject* pObj = (CPDF_PageObject*)m_pObjects->m_ObjectList.GetNext(pos);
+ if (pObj->m_ClipPath.IsNull()) {
+ continue;
+ }
+ if (pObj->m_ClipPath.GetPathCount() != 1) {
+ continue;
+ }
+ if (pObj->m_ClipPath.GetTextCount()) {
+ continue;
+ }
+ CPDF_Path ClipPath = pObj->m_ClipPath.GetPath(0);
+ if (!ClipPath.IsRect() || pObj->m_Type == PDFPAGE_SHADING) {
+ continue;
+ }
+ CFX_FloatRect old_rect(ClipPath.GetPointX(0), ClipPath.GetPointY(0),
+ ClipPath.GetPointX(2), ClipPath.GetPointY(2));
+ CFX_FloatRect obj_rect(pObj->m_Left, pObj->m_Bottom, pObj->m_Right, pObj->m_Top);
+ if (old_rect.Contains(obj_rect)) {
+ pObj->m_ClipPath.SetNull();
+ }
+ }
+ m_Status = Done;
+ return;
+ }
+ steps ++;
+ if (pPause && pPause->NeedToPauseNow()) {
+ break;
+ }
+ }
+}
+int CPDF_ContentParser::EstimateProgress()
+{
+ if (m_Status == Ready) {
+ return 0;
+ }
+ if (m_Status == Done) {
+ return 100;
+ }
+ if (m_InternalStage == PAGEPARSE_STAGE_GETCONTENT) {
+ return 10;
+ }
+ if (m_InternalStage == PAGEPARSE_STAGE_CHECKCLIP) {
+ return 90;
+ }
+ return 10 + 80 * m_CurrentOffset / m_Size;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-01 17:19:24 +0000