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File indexing completed on 2025-12-10 10:23:49
0001 //======================================================================== 0002 // 0003 // Parser.h 0004 // 0005 // Copyright 1996-2003 Glyph & Cog, LLC 0006 // 0007 //======================================================================== 0008 0009 //======================================================================== 0010 // 0011 // Modified under the Poppler project - http://poppler.freedesktop.org 0012 // 0013 // All changes made under the Poppler project to this file are licensed 0014 // under GPL version 2 or later 0015 // 0016 // Copyright (C) 2006, 2010, 2013, 2017, 2018, 2020 Albert Astals Cid <aacid@kde.org> 0017 // Copyright (C) 2012 Hib Eris <hib@hiberis.nl> 0018 // Copyright (C) 2013 Adrian Johnson <ajohnson@redneon.com> 0019 // Copyright (C) 2013 Thomas Freitag <Thomas.Freitag@alfa.de> 0020 // Copyright (C) 2019 Adam Reichold <adam.reichold@t-online.de> 0021 // 0022 // To see a description of the changes please see the Changelog file that 0023 // came with your tarball or type make ChangeLog if you are building from git 0024 // 0025 //======================================================================== 0026 0027 #ifndef PARSER_H 0028 #define PARSER_H 0029 0030 #include "Lexer.h" 0031 0032 //------------------------------------------------------------------------ 0033 // Parser 0034 //------------------------------------------------------------------------ 0035 0036 class POPPLER_PRIVATE_EXPORT Parser 0037 { 0038 public: 0039 // Constructor. 0040 Parser(XRef *xrefA, Stream *streamA, bool allowStreamsA); 0041 Parser(XRef *xrefA, Object *objectA, bool allowStreamsA); 0042 0043 // Destructor. 0044 ~Parser(); 0045 0046 Parser(const Parser &) = delete; 0047 Parser &operator=(const Parser &) = delete; 0048 0049 // Get the next object from the input stream. If <simpleOnly> is 0050 // true, do not parse compound objects (arrays, dictionaries, or 0051 // streams). 0052 Object getObj(bool simpleOnly = false, const unsigned char *fileKey = nullptr, CryptAlgorithm encAlgorithm = cryptRC4, int keyLength = 0, int objNum = 0, int objGen = 0, int recursion = 0, bool strict = false, 0053 bool decryptString = true); 0054 0055 Object getObj(int recursion); 0056 template<typename T> 0057 Object getObj(T) = delete; 0058 0059 // Get stream. 0060 Stream *getStream() { return lexer.getStream(); } 0061 0062 // Get current position in file. 0063 Goffset getPos() { return lexer.getPos(); } 0064 0065 private: 0066 Lexer lexer; // input stream 0067 bool allowStreams; // parse stream objects? 0068 Object buf1, buf2; // next two tokens 0069 int inlineImg; // set when inline image data is encountered 0070 0071 Stream *makeStream(Object &&dict, const unsigned char *fileKey, CryptAlgorithm encAlgorithm, int keyLength, int objNum, int objGen, int recursion, bool strict); 0072 void shift(int objNum = -1); 0073 void shift(const char *cmdA, int objNum); 0074 }; 0075 0076 #endif
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