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Datei: Eliza.c Sprache: C

//------------------------------------------------------------------------------
// aus
// http://www.sourcecodesworld.com/articles/How-to-build-Eliza-Chatterbot.asp
//
//------------------------------------------------------------------------------

class progstr
{
public:
char userip[MAX_USER_INPUT];
char keyword[30];
int keyfound;
int keyno;
int nullip;
    // constructor
    progstr()
    {
        keyno=-1;
        nullip=0;
        keyfound=0;
    }
}ip;

//------------------------------------------------------------------------------
//
//------------------------------------------------------------------------------
class resp
{
int tot_resp;
int last_resp;
char replys[MAX_RESP_NO][MAX_RESP_LEN];
char word[MAX_KWD_LEN];
public:
    // constructor
    resp()
    {
    tot_resp=0;
    last_resp=-1;
    }

    int getcount()
    {
    return last_resp;
    }

    void addword(char str[MAX_KWD_LEN])
    {
    strcpy(word,str);
    }

    char * getword()
    {
    return word;
    }

    void addresp(char str[MAX_RESP_LEN])
    {
    strcpy(replys[++last_resp],str);
    }

    // defined later
    void display_resp(int num);
    void quit_display_resp(int num);

};

//------------------------------------------------------------------------------
//
//------------------------------------------------------------------------------
void read_from_file()
{
ifstream fin;
int index=-1;
fin.open("eliza.dat");
char line[MAX_RESP_LEN];
while(fin)
{
  fin.getline(line,MAX_RESP_LEN);
  char *ptr=NULL;
  ptr=strstr("@KWD@",line);
  if(strlen(line)<1)
   {
   break;
   }
  else if(ptr!=NULL)
   {
   // the next line is a keyword
   fin.getline(line,MAX_RESP_LEN);
   keys[++index].addword(line);
   }
  else
  {
  // it is a response
  keys[index].addresp(line);
  }
} // end of while

} // end of function

//------------------------------------------------------------------------------
//
//------------------------------------------------------------------------------
void initialize_global()
{
strcpy(wordin[0],"ARE");
strcpy(wordout[0],"AM");

strcpy(wordin[1],"AM");
strcpy(wordout[1],"ARE");

strcpy(wordin[2],"WERE");
strcpy(wordout[2],"WAS");

strcpy(wordin[3],"WAS");
strcpy(wordout[3],"WERE");

strcpy(wordin[4],"YOU");
strcpy(wordout[4],"ME");

strcpy(wordin[5]," I ");
strcpy(wordout[5],"YOU");

strcpy(wordin[6],"YOUR");
strcpy(wordout[6],"MY");

strcpy(wordin[7],"MY");
strcpy(wordout[7],"YOUR");

strcpy(wordin[8],"I'VE");
strcpy(wordout[8],"YOU'VE");

strcpy(wordin[9],"YOU'VE");
strcpy(wordout[9],"I'VE");

strcpy(wordin[10],"I'M");
strcpy(wordout[10],"YOU'RE");

strcpy(wordin[11],"YOU'RE");
strcpy(wordout[11],"I'M");

strcpy(wordin[12],"ME");
strcpy(wordout[12],"YOU");

strcpy(wordin[13],"YOU");
strcpy(wordout[13],"ME");
}

//------------------------------------------------------------------------------
//
//------------------------------------------------------------------------------
void resp :: display_resp(int num)
{
cout<<"ELIZA > ";
for(int i=0;i<strlen(replys[num]);i++)
{
     // for deliberate typing errors
     // (for simulating the human behavoir ;-)

     if(RanNum(6)==0)
     {
     char c=RanNum(100);
     if(c=='\n' || c=='\b' || c==13)
          cout<<"w";
     else
          cout<<c;
     delay(RanNum(DELAY));
     // correcting the deliberate typing error
     cout<<"\b";
}

// * is used to write anything after the // keyword
// as it is, but with some transformatio // ns like
// converting MY to YOUR.< // br> if(replys[num][i]=='*')
{
     char * s1=ip.userip+strlen(ip.keyword);
     short int flag=0;
     for(int m=0;m<TRANSPOSE;m++)
          {
          char * s2=wordin[m];
          char *ptr=NULL;
          ptr=strstr(s1,s2);

          if(ptr!=NULL)
          {
          // transposition word found in the
          // user input
          flag=1;

          // printing text before wordin[m]
          int times=ptr-s1;
          for(int i=0;i<times;i++)
          {
          delay(DELAY);
          cout<<ip.userip[strlen(ip.keyword)+i];
          }

          // printing the wordout
          cout<<wordout[m];
          // printing the left overs
          char c;
          c=*(ptr+strlen(wordin[m]));
          int t=0;
          while(c!='\0')
          {
          cout<<*(ptr+strlen(wordin[m])+t);
          t++;
          c=*(ptr+strlen(wordin[m])+t);
          }
          }
          } // end of for

     // if flag is still zero , this means no need for
     // transposing any word.
     if(0==flag)
     {
          char c;
          c=*(s1+strlen(ip.keyword));
          int t=0;
          while(c!='\0')
          {
          cout<<*(s1+t);
          t++;
          c=*(s1+t);
     }
} // end of if
break;
}
else
{
cout<<replys[num][i];
delay(RanNum(DELAY));
}
} // end of for

// giving the prompt back to user
cout<<"\n"<<user<<" > ";
}

{
int len=0;
int lenkey=0;
int key_no=0;
char teststr[50];
while((ip.keyfound==0) &&(key_no!=MAX_KEY))
{
// getting the length of the keyword
// lenkey=strlen(keys[key_no].getword());

char *ptr=NULL;
ptr=strstr(ip.userip,keys[key_no].getword());
if (ptr!=NULL)
{
// keyword found !
ip.keyfound=1;
ip.keyno=key_no;
strcpy(ip.keyword,keys[key_no].getword());
break;
}
key_no++;
}

}

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