command_decoder.h

00001 #ifndef COMMAND_DECODER_H
00002 #define COMMAND_DECODER_H
00003 
00004 #define MAX_TOKEN_NR 2      
00005 #define MAX_KEYWORD_STRING_LTH 10 
00006 #define MAX_KEYWORD_NR 4
00007 
00008 
00009 enum CharacterType {TOKEN, DELIMITER}; 
00010 enum TokenType {KEYWORD, NUMBER, STRING};
00011 enum KeywordCode { ID, CALIB, GOTO, STEP };
00012 
00013 struct Keyword {
00014     
00015     enum KeywordCode eCode;
00016     char cString[MAX_KEYWORD_STRING_LTH + 1];
00017 };
00018 
00019 
00020 union TokenValue {
00021     
00022     enum KeywordCode eKeyword;      // jezeli KEYWORD
00023     unsigned int uiNumber;          // jezeli NUMBER
00024     char * pcString;                // jezeli STRING
00025 };
00026 
00027 struct tToken {
00028     
00029     enum TokenType eType;           // KEYWORD, NUMBER, STRING
00030     union TokenValue uValue;        // enum, unsigned int, char*
00031 };
00032 
00033 class Token {
00034 
00035 private:
00036     unsigned char ucFindTokensInString (char *pcString);
00037     void DecodeTokens(void);
00038     enum Result eSringToKeyword (char pcStr[],enum KeywordCode *peKeywordCode);
00039     enum Result eHexStringToUInt(char pcStr[],unsigned int *puiValue);
00040     void ReplaceCharactersInString(char pcString[],char cOldChar,char cNewChar);
00041 public:  
00042     struct tToken asToken[MAX_TOKEN_NR];
00043     unsigned char ucTokenNr;
00044     void DecodeMsg(char *pcString);
00045 };
00046 
00047 
00048 #endif