// -*- C++ -*- /* This file is part of KDVI (C) 2001 by Stefan Kebekus (kebekus@kde.org) This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. */ /** * Byte reading routines which read big endian numbers from memory and * convert them to native integers. * * @author Stefan Kebekus (kebekus@kde.org) * **/ #ifndef _bigEndianByteReader_H #define _bigEndianByteReader_H #include <tqglobal.h> class bigEndianByteReader { public: /** Set this pointer to the location where the number resides which you want to read. */ Q_UINT8 * command_pointer; /** This pointer marks the end of the memory area where bytes can be read. It should point to the first byte which CANNOT be read. The idea is to have a safety net which protects us against SEGFAULTs. This is also used in virtual fonts, where the macro does not have an EOP command at the end of the macro. */ Q_UINT8 * end_pointer; /** If command_pointer >= end_pointer, this method return EOP (=140) and exists. Otherwise, the method returns the unsigned byte and increases the command_pointer by one. */ Q_UINT8 readUINT8(); /** Similar to the method above, only that the method reads a big endian 2-byte word and increases the pointer by two. */ Q_UINT16 readUINT16(); /** Similar to the method above, only that the method reads a big endian 4-byte word and increases the pointer by four. */ Q_UINT32 readUINT32(); void writeUINT32(Q_UINT32 a); /** Similar to the method above, only that the method reads a big endian number of length size, where 1 <= size <= 4. Note that the value 3 is allowed (and is acually used in DVI files)!!! */ Q_UINT32 readUINT(Q_UINT8 size); /** Similar to the method above, only that the method reads a SIGNED number */ Q_INT32 readINT(Q_UINT8); }; #endif //ifndef _bigEndianByteReader_H