| 1 | //======================================================================== |
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| 2 | // |
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| 3 | // FoFiBase.h |
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| 4 | // |
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| 5 | // Copyright 1999-2003 Glyph & Cog, LLC |
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| 6 | // |
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| 7 | //======================================================================== |
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| 8 | |
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| 9 | //======================================================================== |
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| 10 | // |
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| 11 | // Modified under the Poppler project - http://poppler.freedesktop.org |
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| 12 | // |
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| 13 | // All changes made under the Poppler project to this file are licensed |
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| 14 | // under GPL version 2 or later |
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| 15 | // |
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| 16 | // Copyright (C) 2018, 2022 Albert Astals Cid <aacid@kde.org> |
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| 17 | // Copyright (C) 2022 Oliver Sander <oliver.sander@tu-dresden.de> |
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| 18 | // |
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| 19 | // To see a description of the changes please see the Changelog file that |
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| 20 | // came with your tarball or type make ChangeLog if you are building from git |
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| 21 | // |
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| 22 | //======================================================================== |
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| 23 | |
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| 24 | #ifndef FOFIBASE_H |
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| 25 | #define FOFIBASE_H |
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| 26 | |
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| 27 | //------------------------------------------------------------------------ |
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| 28 | |
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| 29 | using FoFiOutputFunc = void (*)(void *stream, const char *data, size_t len); |
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| 30 | |
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| 31 | //------------------------------------------------------------------------ |
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| 32 | // FoFiBase |
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| 33 | //------------------------------------------------------------------------ |
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| 34 | |
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| 35 | class POPPLER_PRIVATE_EXPORT FoFiBase |
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| 36 | { |
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| 37 | public: |
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| 38 | FoFiBase(const FoFiBase &) = delete; |
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| 39 | FoFiBase &operator=(const FoFiBase &other) = delete; |
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| 40 | |
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| 41 | virtual ~FoFiBase(); |
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| 42 | |
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| 43 | protected: |
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| 44 | FoFiBase(const unsigned char *fileA, int lenA, bool freeFileDataA); |
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| 45 | static char *readFile(const char *fileName, int *fileLen); |
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| 46 | |
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| 47 | // S = signed / U = unsigned |
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| 48 | // 8/16/32/Var = word length, in bytes |
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| 49 | // BE = big endian |
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| 50 | int getS8(int pos, bool *ok) const; |
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| 51 | int getU8(int pos, bool *ok) const; |
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| 52 | int getS16BE(int pos, bool *ok) const; |
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| 53 | int getU16BE(int pos, bool *ok) const; |
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| 54 | int getS32BE(int pos, bool *ok) const; |
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| 55 | unsigned int getU32BE(int pos, bool *ok) const; |
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| 56 | unsigned int getU32LE(int pos, bool *ok) const; |
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| 57 | unsigned int getUVarBE(int pos, int size, bool *ok) const; |
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| 58 | |
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| 59 | bool checkRegion(int pos, int size) const; |
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| 60 | |
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| 61 | const unsigned char *file; |
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| 62 | int len; |
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| 63 | bool freeFileData; |
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| 64 | }; |
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| 65 | |
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| 66 | #endif |
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| 67 | |
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