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| 1 // Copyright 2016 PDFium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | |
| 6 | |
| 7 #ifndef CORE_FPDFAPI_FPDF_PARSER_CPDF_DATA_AVAIL_H_ | |
| 8 #define CORE_FPDFAPI_FPDF_PARSER_CPDF_DATA_AVAIL_H_ | |
| 9 | |
| 10 #include "core/fpdfapi/fpdf_parser/cpdf_hint_tables.h" | |
| 11 #include "core/fpdfapi/fpdf_parser/cpdf_syntax_parser.h" | |
| 12 #include "core/fpdfapi/fpdf_parser/include/cpdf_parser.h" | |
| 13 #include "core/fpdfapi/fpdf_parser/include/ipdf_data_avail.h" | |
| 14 #include "core/fxcrt/include/fx_basic.h" | |
| 15 | |
| 16 class CPDF_Dictionary; | |
| 17 class CPDF_IndirectObjectHolder; | |
| 18 class CPDF_Parser; | |
| 19 | |
| 20 enum PDF_DATAAVAIL_STATUS { | |
| 21 PDF_DATAAVAIL_HEADER = 0, | |
| 22 PDF_DATAAVAIL_FIRSTPAGE, | |
| 23 PDF_DATAAVAIL_FIRSTPAGE_PREPARE, | |
| 24 PDF_DATAAVAIL_HINTTABLE, | |
| 25 PDF_DATAAVAIL_END, | |
| 26 PDF_DATAAVAIL_CROSSREF, | |
| 27 PDF_DATAAVAIL_CROSSREF_ITEM, | |
| 28 PDF_DATAAVAIL_CROSSREF_STREAM, | |
| 29 PDF_DATAAVAIL_TRAILER, | |
| 30 PDF_DATAAVAIL_LOADALLCROSSREF, | |
| 31 PDF_DATAAVAIL_ROOT, | |
| 32 PDF_DATAAVAIL_INFO, | |
| 33 PDF_DATAAVAIL_ACROFORM, | |
| 34 PDF_DATAAVAIL_ACROFORM_SUBOBJECT, | |
| 35 PDF_DATAAVAIL_PAGETREE, | |
| 36 PDF_DATAAVAIL_PAGE, | |
| 37 PDF_DATAAVAIL_PAGE_LATERLOAD, | |
| 38 PDF_DATAAVAIL_RESOURCES, | |
| 39 PDF_DATAAVAIL_DONE, | |
| 40 PDF_DATAAVAIL_ERROR, | |
| 41 PDF_DATAAVAIL_LOADALLFILE, | |
| 42 PDF_DATAAVAIL_TRAILER_APPEND | |
| 43 }; | |
| 44 | |
| 45 enum PDF_PAGENODE_TYPE { | |
| 46 PDF_PAGENODE_UNKNOWN = 0, | |
| 47 PDF_PAGENODE_PAGE, | |
| 48 PDF_PAGENODE_PAGES, | |
| 49 PDF_PAGENODE_ARRAY, | |
| 50 }; | |
| 51 | |
| 52 class CPDF_DataAvail final : public IPDF_DataAvail { | |
| 53 public: | |
| 54 CPDF_DataAvail(FileAvail* pFileAvail, | |
| 55 IFX_FileRead* pFileRead, | |
| 56 FX_BOOL bSupportHintTable); | |
| 57 ~CPDF_DataAvail() override; | |
| 58 | |
| 59 // IPDF_DataAvail | |
| 60 DocAvailStatus IsDocAvail(DownloadHints* pHints) override; | |
| 61 void SetDocument(CPDF_Document* pDoc) override; | |
| 62 DocAvailStatus IsPageAvail(int iPage, DownloadHints* pHints) override; | |
| 63 DocFormStatus IsFormAvail(DownloadHints* pHints) override; | |
| 64 DocLinearizationStatus IsLinearizedPDF() override; | |
| 65 FX_BOOL IsLinearized() override; | |
| 66 void GetLinearizedMainXRefInfo(FX_FILESIZE* pPos, uint32_t* pSize) override; | |
| 67 | |
| 68 int GetPageCount() const; | |
| 69 CPDF_Dictionary* GetPage(int index); | |
| 70 | |
| 71 friend class CPDF_HintTables; | |
| 72 | |
| 73 protected: | |
| 74 class PageNode { | |
| 75 public: | |
| 76 PageNode(); | |
| 77 ~PageNode(); | |
| 78 | |
| 79 PDF_PAGENODE_TYPE m_type; | |
| 80 uint32_t m_dwPageNo; | |
| 81 CFX_ArrayTemplate<PageNode*> m_childNode; | |
| 82 }; | |
| 83 | |
| 84 static const int kMaxDataAvailRecursionDepth = 64; | |
| 85 static int s_CurrentDataAvailRecursionDepth; | |
| 86 static const int kMaxPageRecursionDepth = 1024; | |
| 87 | |
| 88 uint32_t GetObjectSize(uint32_t objnum, FX_FILESIZE& offset); | |
| 89 FX_BOOL IsObjectsAvail(CFX_ArrayTemplate<CPDF_Object*>& obj_array, | |
| 90 FX_BOOL bParsePage, | |
| 91 IPDF_DataAvail::DownloadHints* pHints, | |
| 92 CFX_ArrayTemplate<CPDF_Object*>& ret_array); | |
| 93 FX_BOOL CheckDocStatus(IPDF_DataAvail::DownloadHints* pHints); | |
| 94 FX_BOOL CheckHeader(IPDF_DataAvail::DownloadHints* pHints); | |
| 95 FX_BOOL CheckFirstPage(IPDF_DataAvail::DownloadHints* pHints); | |
| 96 FX_BOOL CheckHintTables(IPDF_DataAvail::DownloadHints* pHints); | |
| 97 FX_BOOL CheckEnd(IPDF_DataAvail::DownloadHints* pHints); | |
| 98 FX_BOOL CheckCrossRef(IPDF_DataAvail::DownloadHints* pHints); | |
| 99 FX_BOOL CheckCrossRefItem(IPDF_DataAvail::DownloadHints* pHints); | |
| 100 FX_BOOL CheckTrailer(IPDF_DataAvail::DownloadHints* pHints); | |
| 101 FX_BOOL CheckRoot(IPDF_DataAvail::DownloadHints* pHints); | |
| 102 FX_BOOL CheckInfo(IPDF_DataAvail::DownloadHints* pHints); | |
| 103 FX_BOOL CheckPages(IPDF_DataAvail::DownloadHints* pHints); | |
| 104 FX_BOOL CheckPage(IPDF_DataAvail::DownloadHints* pHints); | |
| 105 FX_BOOL CheckResources(IPDF_DataAvail::DownloadHints* pHints); | |
| 106 FX_BOOL CheckAnnots(IPDF_DataAvail::DownloadHints* pHints); | |
| 107 FX_BOOL CheckAcroForm(IPDF_DataAvail::DownloadHints* pHints); | |
| 108 FX_BOOL CheckAcroFormSubObject(IPDF_DataAvail::DownloadHints* pHints); | |
| 109 FX_BOOL CheckTrailerAppend(IPDF_DataAvail::DownloadHints* pHints); | |
| 110 FX_BOOL CheckPageStatus(IPDF_DataAvail::DownloadHints* pHints); | |
| 111 FX_BOOL CheckAllCrossRefStream(IPDF_DataAvail::DownloadHints* pHints); | |
| 112 | |
| 113 int32_t CheckCrossRefStream(IPDF_DataAvail::DownloadHints* pHints, | |
| 114 FX_FILESIZE& xref_offset); | |
| 115 FX_BOOL IsLinearizedFile(uint8_t* pData, uint32_t dwLen); | |
| 116 void SetStartOffset(FX_FILESIZE dwOffset); | |
| 117 FX_BOOL GetNextToken(CFX_ByteString& token); | |
| 118 FX_BOOL GetNextChar(uint8_t& ch); | |
| 119 CPDF_Object* ParseIndirectObjectAt( | |
| 120 FX_FILESIZE pos, | |
| 121 uint32_t objnum, | |
| 122 CPDF_IndirectObjectHolder* pObjList = nullptr); | |
| 123 CPDF_Object* GetObject(uint32_t objnum, | |
| 124 IPDF_DataAvail::DownloadHints* pHints, | |
| 125 FX_BOOL* pExistInFile); | |
| 126 FX_BOOL GetPageKids(CPDF_Parser* pParser, CPDF_Object* pPages); | |
| 127 FX_BOOL PreparePageItem(); | |
| 128 FX_BOOL LoadPages(IPDF_DataAvail::DownloadHints* pHints); | |
| 129 FX_BOOL LoadAllXref(IPDF_DataAvail::DownloadHints* pHints); | |
| 130 FX_BOOL LoadAllFile(IPDF_DataAvail::DownloadHints* pHints); | |
| 131 DocAvailStatus CheckLinearizedData(IPDF_DataAvail::DownloadHints* pHints); | |
| 132 FX_BOOL CheckPageAnnots(int iPage, IPDF_DataAvail::DownloadHints* pHints); | |
| 133 | |
| 134 DocAvailStatus CheckLinearizedFirstPage( | |
| 135 int iPage, | |
| 136 IPDF_DataAvail::DownloadHints* pHints); | |
| 137 FX_BOOL HaveResourceAncestor(CPDF_Dictionary* pDict); | |
| 138 FX_BOOL CheckPage(int32_t iPage, IPDF_DataAvail::DownloadHints* pHints); | |
| 139 FX_BOOL LoadDocPages(IPDF_DataAvail::DownloadHints* pHints); | |
| 140 FX_BOOL LoadDocPage(int32_t iPage, IPDF_DataAvail::DownloadHints* pHints); | |
| 141 FX_BOOL CheckPageNode(PageNode& pageNodes, | |
| 142 int32_t iPage, | |
| 143 int32_t& iCount, | |
| 144 IPDF_DataAvail::DownloadHints* pHints, | |
| 145 int level); | |
| 146 FX_BOOL CheckUnkownPageNode(uint32_t dwPageNo, | |
| 147 PageNode* pPageNode, | |
| 148 IPDF_DataAvail::DownloadHints* pHints); | |
| 149 FX_BOOL CheckArrayPageNode(uint32_t dwPageNo, | |
| 150 PageNode* pPageNode, | |
| 151 IPDF_DataAvail::DownloadHints* pHints); | |
| 152 FX_BOOL CheckPageCount(IPDF_DataAvail::DownloadHints* pHints); | |
| 153 bool IsFirstCheck(int iPage); | |
| 154 void ResetFirstCheck(int iPage); | |
| 155 FX_BOOL IsDataAvail(FX_FILESIZE offset, | |
| 156 uint32_t size, | |
| 157 IPDF_DataAvail::DownloadHints* pHints); | |
| 158 | |
| 159 CPDF_Parser m_parser; | |
| 160 CPDF_SyntaxParser m_syntaxParser; | |
| 161 CPDF_Object* m_pRoot; | |
| 162 uint32_t m_dwRootObjNum; | |
| 163 uint32_t m_dwInfoObjNum; | |
| 164 CPDF_Object* m_pLinearized; | |
| 165 CPDF_Object* m_pTrailer; | |
| 166 FX_BOOL m_bDocAvail; | |
| 167 FX_FILESIZE m_dwHeaderOffset; | |
| 168 FX_FILESIZE m_dwLastXRefOffset; | |
| 169 FX_FILESIZE m_dwXRefOffset; | |
| 170 FX_FILESIZE m_dwTrailerOffset; | |
| 171 FX_FILESIZE m_dwCurrentOffset; | |
| 172 PDF_DATAAVAIL_STATUS m_docStatus; | |
| 173 FX_FILESIZE m_dwFileLen; | |
| 174 CPDF_Document* m_pDocument; | |
| 175 std::set<uint32_t> m_ObjectSet; | |
| 176 CFX_ArrayTemplate<CPDF_Object*> m_objs_array; | |
| 177 FX_FILESIZE m_Pos; | |
| 178 FX_FILESIZE m_bufferOffset; | |
| 179 uint32_t m_bufferSize; | |
| 180 CFX_ByteString m_WordBuf; | |
| 181 uint8_t m_bufferData[512]; | |
| 182 CFX_ArrayTemplate<uint32_t> m_XRefStreamList; | |
| 183 CFX_ArrayTemplate<uint32_t> m_PageObjList; | |
| 184 uint32_t m_PagesObjNum; | |
| 185 FX_BOOL m_bLinearized; | |
| 186 uint32_t m_dwFirstPageNo; | |
| 187 FX_BOOL m_bLinearedDataOK; | |
| 188 FX_BOOL m_bMainXRefLoadTried; | |
| 189 FX_BOOL m_bMainXRefLoadedOK; | |
| 190 FX_BOOL m_bPagesTreeLoad; | |
| 191 FX_BOOL m_bPagesLoad; | |
| 192 CPDF_Parser* m_pCurrentParser; | |
| 193 FX_FILESIZE m_dwCurrentXRefSteam; | |
| 194 FX_BOOL m_bAnnotsLoad; | |
| 195 FX_BOOL m_bHaveAcroForm; | |
| 196 uint32_t m_dwAcroFormObjNum; | |
| 197 FX_BOOL m_bAcroFormLoad; | |
| 198 CPDF_Object* m_pAcroForm; | |
| 199 CFX_ArrayTemplate<CPDF_Object*> m_arrayAcroforms; | |
| 200 CPDF_Dictionary* m_pPageDict; | |
| 201 CPDF_Object* m_pPageResource; | |
| 202 FX_BOOL m_bNeedDownLoadResource; | |
| 203 FX_BOOL m_bPageLoadedOK; | |
| 204 FX_BOOL m_bLinearizedFormParamLoad; | |
| 205 CFX_ArrayTemplate<CPDF_Object*> m_PagesArray; | |
| 206 uint32_t m_dwEncryptObjNum; | |
| 207 FX_FILESIZE m_dwPrevXRefOffset; | |
| 208 FX_BOOL m_bTotalLoadPageTree; | |
| 209 FX_BOOL m_bCurPageDictLoadOK; | |
| 210 PageNode m_pageNodes; | |
| 211 std::set<uint32_t> m_pageMapCheckState; | |
| 212 std::set<uint32_t> m_pagesLoadState; | |
| 213 std::unique_ptr<CPDF_HintTables> m_pHintTables; | |
| 214 FX_BOOL m_bSupportHintTable; | |
| 215 }; | |
| 216 | |
| 217 #endif // CORE_FPDFAPI_FPDF_PARSER_CPDF_DATA_AVAIL_H_ | |
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Chromium Code Reviews
Issue 2061973002:
Get rid of IPDF_DataAvail. (Closed)
Base URL: https://pdfium.googlesource.com/pdfium@master