| Octane v1.01.20 - The Open Compression Toolkit for C++ | http://octane.sourceforge.net/ |
00001 00002 00003 00004 00005 00006 00007 00008 00009 00010 00011 00012 00013 00014 00015 //--------------------------------------------------------------------------- 00016 00017 //--------------------------------------------------------------------------- 00018 // recursive header protection 00019 #ifndef BitParserH 00020 #define BitParserH 00021 //--------------------------------------------------------------------------- 00022 00023 //--------------------------------------------------------------------------- 00024 // application includes 00025 #include "../parser.hpp" 00026 #include "../../bitio/bitio.hpp" 00027 // system includes 00028 using namespace std; 00029 //--------------------------------------------------------------------------- 00030 00031 00032 00033 00034 00035 00036 //--------------------------------------------------------------------------- 00041 class BitParser : public OctaneParser 00042 { 00043 protected: 00045 int Parameter_bitlength; 00046 protected: 00049 bool senteos; 00050 public: 00051 //--------------------------------------------------------------------------- 00053 BitParser() {bitlength=1;}; 00055 ~BitParser() {;}; 00056 //--------------------------------------------------------------------------- 00057 public: 00058 //--------------------------------------------------------------------------- 00059 // PARSER PUBLIC API - PREPARATIONS FOR PARSING 00060 virtual bool CreateSymbolSetUsingStream(bitreader &from) {return true;}; 00061 virtual bool IsReadyToParse() {return true;}; 00062 virtual bool RewindAnyBufferedInput(bitreader &from) {return true;}; 00063 //--------------------------------------------------------------------------- 00064 public: 00065 //--------------------------------------------------------------------------- 00066 // PARSER PUBLIC API - MAIN PARSING FUNCTIONS 00067 virtual void SynchronizeStateForNewStream(); 00068 virtual int GetSymbolCount() {return 256;}; 00069 virtual bool ParseNextSymbolFromInput(bitreader &from, int &symbolnum); 00070 virtual bool WriteSymbolText(bitwriter &to, int symbolnum,bool &isendofstreamsymbol); 00071 virtual string LookupSymbolText(int symbolnum); 00072 //--------------------------------------------------------------------------- 00073 public: 00074 //--------------------------------------------------------------------------- 00075 // OCTANE PUBLIC API - AUXILIARY FUNCTIONS - these are supported by all derived classes 00076 virtual void ShowDebuggingInfo() {;}; 00077 virtual unsigned int GetMemoryUsed() {return (unsigned int)(sizeof(this));}; 00078 virtual unsigned int GetDiskspaceUsed(bool fortempdecompressiononly) {return (unsigned int)0;}; 00079 virtual std::string GetParametersInformation() {return "";}; 00080 virtual void SetDefaultParameters() {;}; 00081 virtual bool SetParameter(const std::string ¶metername,const std::string ¶metervalue) {return false;}; 00082 virtual bool SaveState(bitwriter &to,bool fortempdecompressiononly) {return true;}; 00083 virtual bool LoadState(bitreader &from) {return true;}; 00084 //--------------------------------------------------------------------------- 00085 }; 00086 //--------------------------------------------------------------------------- 00087 00088 00089 00090 00091 00092 //--------------------------------------------------------------------------- 00093 #endif 00094 //--------------------------------------------------------------------------- 00095