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Issue 1778173002: Split apart the remainder of fpdf_render_render.cpp into per-class files. (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@master
Patch Set: Nits Created 4 years, 9 months ago
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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_SRC_FPDFAPI_FPDF_PARSER_CPDF_DATA_AVAIL_H_
8 #define CORE_SRC_FPDFAPI_FPDF_PARSER_CPDF_DATA_AVAIL_H_
9
10 #include "core/include/fpdfapi/cpdf_parser.h"
11 #include "core/include/fpdfapi/ipdf_data_avail.h"
12 #include "core/include/fxcrt/fx_basic.h"
13 #include "core/src/fpdfapi/fpdf_parser/cpdf_hint_tables.h"
14 #include "core/src/fpdfapi/fpdf_parser/cpdf_syntax_parser.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 { return m_bLinearized; }
66 void GetLinearizedMainXRefInfo(FX_FILESIZE* pPos, FX_DWORD* 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 FX_DWORD 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 FX_DWORD GetObjectSize(FX_DWORD 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, FX_DWORD 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 FX_DWORD objnum,
122 CPDF_IndirectObjectHolder* pObjList = nullptr);
123 CPDF_Object* GetObject(FX_DWORD 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(FX_DWORD dwPageNo,
147 PageNode* pPageNode,
148 IPDF_DataAvail::DownloadHints* pHints);
149 FX_BOOL CheckArrayPageNode(FX_DWORD 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 FX_DWORD size,
157 IPDF_DataAvail::DownloadHints* pHints);
158
159 CPDF_Parser m_parser;
160 CPDF_SyntaxParser m_syntaxParser;
161 CPDF_Object* m_pRoot;
162 FX_DWORD m_dwRootObjNum;
163 FX_DWORD 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<FX_DWORD> m_ObjectSet;
176 CFX_ArrayTemplate<CPDF_Object*> m_objs_array;
177 FX_FILESIZE m_Pos;
178 FX_FILESIZE m_bufferOffset;
179 FX_DWORD m_bufferSize;
180 CFX_ByteString m_WordBuf;
181 uint8_t m_bufferData[512];
182 CFX_DWordArray m_XRefStreamList;
183 CFX_DWordArray m_PageObjList;
184 FX_DWORD m_PagesObjNum;
185 FX_BOOL m_bLinearized;
186 FX_DWORD 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 FX_DWORD 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 FX_DWORD m_dwEncryptObjNum;
207 FX_FILESIZE m_dwPrevXRefOffset;
208 FX_BOOL m_bTotalLoadPageTree;
209 FX_BOOL m_bCurPageDictLoadOK;
210 PageNode m_pageNodes;
211 std::set<FX_DWORD> m_pageMapCheckState;
212 std::set<FX_DWORD> m_pagesLoadState;
213 std::unique_ptr<CPDF_HintTables> m_pHintTables;
214 FX_BOOL m_bSupportHintTable;
215 };
216
217 #endif // CORE_SRC_FPDFAPI_FPDF_PARSER_CPDF_DATA_AVAIL_H_
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