eliza.c (12662B)
1 /* 2 * Original Source: 3 * https://github.com/mottosso/cs50x/blob/master/eliza.c 4 * with some minor changes by Gerd Beuster for CC65 5 * 6 * eliza.c 7 * ys 8 * original code by Weizenbaum, 1966 9 * this rendition based on Charles Hayden's Java implementation from http://chayden.net/eliza/Eliza.html 10 * 11 * Note: There are certainly far more optimal and elegant ways to code this... we kept this 12 * structure to be faithful to the original. -scaz 13 */ 14 15 #include <ctype.h> 16 #include <stdio.h> 17 #include <string.h> 18 #include <stdlib.h> 19 #include <conio.h> 20 21 #define NUMKEYWORDS 37 22 #define MAXLINELEN 80 23 #define NUMSWAPS 14 24 25 const char *keywords[]= { 26 "CAN YOU","CAN I","YOU ARE","YOURE","I DONT","I FEEL", 27 "WHY DONT YOU","WHY CANT I","ARE YOU","I CANT","I AM","IM ", 28 "YOU ","I WANT","WHAT","HOW","WHO","WHERE", 29 "WHEN","WHY", 30 "NAME","CAUSE","SORRY","DREAM","HELLO","HI ","MAYBE", 31 " NO","YOUR","ALWAYS","THINK","ALIKE","YES","FRIEND", 32 "COMPUTER","CAR","NOKEYFOUND"}; 33 34 const char *SWAPS[NUMSWAPS][2] = { 35 {"ARE","AM"}, 36 {"WERE", "WAS"}, 37 {"YOU","I"}, 38 {"YOUR", "MY"}, 39 {"IVE", "YOU'VE"}, 40 {"IM", "YOU'RE"}, 41 {"YOU", "ME"}, 42 {"ME", "YOU"}, 43 {"AM","ARE"}, 44 {"WAS", "WERE"}, 45 {"I","YOU"}, 46 {"MY", "YOUR"}, 47 {"YOUVE", "I'VE"}, 48 {"YOURE", "I'M"} 49 }; 50 51 int ResponsesPerKeyword[NUMKEYWORDS]= { 52 3,2,4,4,4,3, 53 3,2,3,3,4,4, 54 3,5,9,9,9,9, 55 9,9, 56 2,4,4,4,1,1,5, 57 5,2,4,3,7,3,6, 58 7,5,6}; 59 60 const char *responses[NUMKEYWORDS][9] = { 61 { "DON'T YOU BELIEVE THAT I CAN*", 62 "PERHAPS YOU WOULD LIKE TO BE ABLE TO*", 63 "YOU WANT ME TO BE ABLE TO*"}, 64 { "PERHAPS YOU DON'T WANT TO*", 65 "DO YOU WANT TO BE ABLE TO*"}, 66 { "WHAT MAKES YOU THINK I AM*", 67 "DOES IT PLEASE YOU TO BELIEVE I AM*", 68 "PERHAPS YOU WOULD LIKE TO BE*", 69 "DO YOU SOMETIMES WISH YOU WERE*"}, 70 { "WHAT MAKES YOU THINK I AM*", 71 "DOES IT PLEASE YOU TO BELIEVE I AM*", 72 "PERHAPS YOU WOULD LIKE TO BE*", 73 "DO YOU SOMETIMES WISH YOU WERE*"}, 74 { "DON'T YOU REALLY*", 75 "WHY DON'T YOU*", 76 "DO YOU WISH TO BE ABLE TO*", 77 "DOES THAT TROUBLE YOU?"}, 78 { "TELL ME MORE ABOUT SUCH FEELINGS.", 79 "DO YOU OFTEN FEEL*", 80 "DO YOU ENJOY FEELING*"}, 81 { "DO YOU REALLY BELIEVE I DON'T*", 82 "PERHAPS IN GOOD TIME I WILL*", 83 "DO YOU WANT ME TO*"}, 84 { "DO YOU THINK YOU SHOULD BE ABLE TO*", 85 "WHY CAN'T YOU*"}, 86 { "WHY ARE YOU INTERESTED IN WHETHER OR NOT I AM*", 87 "WOULD YOU PREFER IF I WERE NOT*", 88 "PERHAPS IN YOUR FANTASIES I AM*"}, 89 { "HOW DO YOU KNOW YOU CAN'T*", 90 "HAVE YOU TRIED?", 91 "PERHAPS YOU CAN NOW*"}, 92 { "DID YOU COME TO ME BECAUSE YOU ARE*", 93 "HOW LONG HAVE YOU BEEN*", 94 "DO YOU BELIEVE IT IS NORMAL TO BE*", 95 "DO YOU ENJOY BEING*"}, 96 { "DID YOU COME TO ME BECAUSE YOU ARE*", 97 "HOW LONG HAVE YOU BEEN*", 98 "DO YOU BELIEVE IT IS NORMAL TO BE*", 99 "DO YOU ENJOY BEING*"}, 100 { "WE WERE DISCUSSING YOU-- NOT ME.", 101 "OH, I*", 102 "YOU'RE NOT REALLY TALKING ABOUT ME, ARE YOU?"}, 103 { "WHAT WOULD IT MEAN TO YOU IF YOU GOT*", 104 "WHY DO YOU WANT*", 105 "SUPPOSE YOU SOON GOT*", 106 "WHAT IF YOU NEVER GOT*", 107 "I SOMETIMES ALSO WANT*"}, 108 { "WHY DO YOU ASK?", 109 "DOES THAT QUESTION INTEREST YOU?", 110 "WHAT ANSWER WOULD PLEASE YOU THE MOST?", 111 "WHAT DO YOU THINK?", 112 "ARE SUCH QUESTIONS ON YOUR MIND OFTEN?", 113 "WHAT IS IT THAT YOU REALLY WANT TO KNOW?", 114 "HAVE YOU ASKED ANYONE ELSE?", 115 "HAVE YOU ASKED SUCH QUESTIONS BEFORE?", 116 "WHAT ELSE COMES TO MIND WHEN YOU ASK THAT?"}, 117 { "WHY DO YOU ASK?", 118 "DOES THAT QUESTION INTEREST YOU?", 119 "WHAT ANSWER WOULD PLEASE YOU THE MOST?", 120 "WHAT DO YOU THINK?", 121 "ARE SUCH QUESTIONS ON YOUR MIND OFTEN?", 122 "WHAT IS IT THAT YOU REALLY WANT TO KNOW?", 123 "HAVE YOU ASKED ANYONE ELSE?", 124 "HAVE YOU ASKED SUCH QUESTIONS BEFORE?", 125 "WHAT ELSE COMES TO MIND WHEN YOU ASK THAT?"}, 126 { "WHY DO YOU ASK?", 127 "DOES THAT QUESTION INTEREST YOU?", 128 "WHAT ANSWER WOULD PLEASE YOU THE MOST?", 129 "WHAT DO YOU THINK?", 130 "ARE SUCH QUESTIONS ON YOUR MIND OFTEN?", 131 "WHAT IS IT THAT YOU REALLY WANT TO KNOW?", 132 "HAVE YOU ASKED ANYONE ELSE?", 133 "HAVE YOU ASKED SUCH QUESTIONS BEFORE?", 134 "WHAT ELSE COMES TO MIND WHEN YOU ASK THAT?"}, 135 { "WHY DO YOU ASK?", 136 "DOES THAT QUESTION INTEREST YOU?", 137 "WHAT ANSWER WOULD PLEASE YOU THE MOST?", 138 "WHAT DO YOU THINK?", 139 "ARE SUCH QUESTIONS ON YOUR MIND OFTEN?", 140 "WHAT IS IT THAT YOU REALLY WANT TO KNOW?", 141 "HAVE YOU ASKED ANYONE ELSE?", 142 "HAVE YOU ASKED SUCH QUESTIONS BEFORE?", 143 "WHAT ELSE COMES TO MIND WHEN YOU ASK THAT?"}, 144 { "WHY DO YOU ASK?", 145 "DOES THAT QUESTION INTEREST YOU?", 146 "WHAT ANSWER WOULD PLEASE YOU THE MOST?", 147 "WHAT DO YOU THINK?", 148 "ARE SUCH QUESTIONS ON YOUR MIND OFTEN?", 149 "WHAT IS IT THAT YOU REALLY WANT TO KNOW?", 150 "HAVE YOU ASKED ANYONE ELSE?", 151 "HAVE YOU ASKED SUCH QUESTIONS BEFORE?", 152 "WHAT ELSE COMES TO MIND WHEN YOU ASK THAT?"}, 153 { "WHY DO YOU ASK?", 154 "DOES THAT QUESTION INTEREST YOU?", 155 "WHAT ANSWER WOULD PLEASE YOU THE MOST?", 156 "WHAT DO YOU THINK?", 157 "ARE SUCH QUESTIONS ON YOUR MIND OFTEN?", 158 "WHAT IS IT THAT YOU REALLY WANT TO KNOW?", 159 "HAVE YOU ASKED ANYONE ELSE?", 160 "HAVE YOU ASKED SUCH QUESTIONS BEFORE?", 161 "WHAT ELSE COMES TO MIND WHEN YOU ASK THAT?"}, 162 { "NAMES DON'T INTEREST ME.", 163 "I DON'T CARE ABOUT NAMES-- PLEASE GO ON."}, 164 { "IS THAT THE REAL REASON?", 165 "DON'T ANY OTHER REASONS COME TO MIND?", 166 "DOES THAT REASON EXPLAIN ANY THING ELSE?", 167 "WHAT OTHER REASONS MIGHT THERE BE?"}, 168 { "PLEASE DON'T APOLOGIZE.", 169 "APOLOGIES ARE NOT NECESSARY.", 170 "WHAT FEELINGS DO YOU HAVE WHEN YOU APOLOGIZE?", 171 "DON'T BE SO DEFENSIVE!"}, 172 { "WHAT DOES THAT DREAM SUGGEST TO YOU?", 173 "DO YOU DREAM OFTEN?", 174 "WHAT PERSONS APPEAR IN YOUR DREAMS?", 175 "ARE YOU DISTURBED BY YOUR DREAMS?"}, 176 { "HOW DO YOU DO--PLEASE STATE YOUR PROBLEM."}, 177 { "HOW DO YOU DO--PLEASE STATE YOUR PROBLEM."}, 178 { "YOU DON'T SEEM QUITE CERTAIN.", 179 "WHY THE UNCERTAIN TONE?", 180 "CAN'T YOU BE MORE POSITIVE?", 181 "YOU AREN'T SURE?", 182 "DON'T YOU KNOW?"}, 183 { "ARE YOU SAYING NO JUST TO BE NEGATIVE?", 184 "YOU ARE BEING A BIT NEGATIVE.", 185 "WHY NOT?", 186 "ARE YOU SURE?", 187 "WHY NO?"}, 188 { "WHY ARE YOU CONCERNED ABOUT MY*", 189 "WHAT ABOUT YOUR OWN*"}, 190 { "CAN YOU THINK OF A SPECIFIC EXAMPLE?", 191 "WHEN?", 192 "WHAT ARE YOU THINKING OF?", 193 "REALLY, ALWAYS?"}, 194 { "DO YOU REALLY THINK SO?", 195 "BUT YOU ARE NOT SURE YOU*", 196 "DO YOU DOUBT YOU*"}, 197 { "IN WHAT WAY?", 198 "WHAT RESEMBLANCE DO YOU SEE?", 199 "WHAT DOES THE SIMILARITY SUGGEST TO YOU?", 200 "WHAT OTHER CONNECTIONS DO YOU SEE?", 201 "COULD THERE REALLY BE SOME CONNECTION?", 202 "HOW?"}, 203 { "YOU SEEM QUITE POSITIVE.", 204 "ARE YOU SURE?", 205 "I SEE.", 206 "I UNDERSTAND."}, 207 { "WHY DO YOU BRING UP THE TOPIC OF FRIENDS?", 208 "DO YOUR FRIENDS WORRY YOU?", 209 "DO YOUR FRIENDS PICK ON YOU?", 210 "ARE YOU SURE YOU HAVE ANY FRIENDS?", 211 "DO YOU IMPOSE ON YOUR FRIENDS?", 212 "PERHAPS YOUR LOVE FOR FRIENDS WORRIES YOU?"}, 213 { "DO COMPUTERS WORRY YOU?", 214 "ARE YOU TALKING ABOUT ME IN PARTICULAR?", 215 "ARE YOU FRIGHTENED BY MACHINES?", 216 "WHY DO YOU MENTION COMPUTERS?", 217 "WHAT DO YOU THINK MACHINES HAVE TO DO WITH YOUR PROBLEM?", 218 "DON'T YOU THINK COMPUTERS CAN HELP PEOPLE?", 219 "WHAT IS IT ABOUT MACHINES THAT WORRIES YOU?"}, 220 { "OH, DO YOU LIKE CARS?", 221 "MY FAVORITE CAR IS A LAMBORGINI COUNTACH. WHAT IS YOUR FAVORITE CAR?", 222 "MY FAVORITE CAR COMPANY IS FERRARI. WHAT IS YOURS?", 223 "DO YOU LIKE PORSCHES?", 224 "DO YOU LIKE PORSCHE TURBO CARRERAS?"}, 225 { "SAY, DO YOU HAVE ANY PSYCHOLOGICAL PROBLEMS?", 226 "WHAT DOES THAT SUGGEST TO YOU?", 227 "I SEE.", 228 "I'M NOT SURE I UNDERSTAND YOU FULLY.", 229 "COME, COME ELUCIDATE YOUR THOUGHTS.", 230 "CAN YOU ELABORATE ON THAT?", 231 "THAT IS QUITE INTERESTING."} 232 233 234 }; 235 236 void print_center(const char *msg) { 237 int numspaces=(MAXLINELEN-strlen(msg))/2; 238 int i; 239 240 for(i=0;i<numspaces;i++) 241 cprintf(" "); 242 cprintf("%s\r\n", msg); 243 return; 244 } 245 246 void print_title () { 247 cprintf("\r\n\r\n"); 248 print_center("*** ELIZA ***"); 249 print_center("Original code by Weizenbaum, 1966"); 250 print_center("This is Marcus Ottosson's version from 2016"); 251 print_center("To stop Eliza, type 'bye'"); 252 cprintf("\r\n\r\n"); 253 cprintf("HI! I'M ELIZA. WHAT'S YOUR PROBLEM?\r\n"); 254 } 255 256 void readline(char *instr) { 257 char c; 258 int slen=0; 259 260 c=cgetc(); 261 cputc(c); 262 while (c != '\r') 263 { 264 // removes punctuation and sets to uppercase 265 if(isalpha(c) || isspace(c)) 266 instr[slen++]=toupper(c); 267 if(slen>MAXLINELEN-1) 268 { 269 cprintf("Exceeded Max Line Length\r\n"); 270 exit(0); 271 } 272 c=cgetc(); 273 cputc(c); 274 } 275 cputc('\n'); 276 instr[slen]='\0'; 277 } 278 279 280 // Number of local variables of CC65 limited, 281 // therefore we make all variables of main 282 // global. 283 int k,baseLength; 284 int whichReply[NUMKEYWORDS]; 285 char lastinput[MAXLINELEN]; 286 char reply[MAXLINELEN]; 287 char *baseResponse, *token; 288 const char separator[2]=" "; 289 char inputstr[MAXLINELEN]; 290 int x; 291 char *location; 292 int s; 293 void main(void) 294 { 295 296 // use the first reply for each keyword match the first time you see that keyword 297 for (x=0;x< NUMKEYWORDS; x++) { 298 whichReply[x] = 0; 299 } 300 301 // print a nice centered title screen 302 print_title(); 303 304 lastinput[0]='\0'; 305 306 while (1) { 307 readline(inputstr); 308 309 // check for termination 310 if (strcmp(inputstr,"BYE")==0) 311 break; 312 313 // check for repeated entries 314 if (strcmp(lastinput,inputstr)==0) 315 { 316 cprintf("PLEASE DON'T REPEAT YOURSELF!\r\n"); 317 continue; 318 } 319 strncpy(lastinput,inputstr,strlen(inputstr)+1); 320 321 // see if any of the keywords is contained in the input 322 // if not, we use the last element of keywords as our default responses 323 strcpy(reply,""); 324 for(k=0;k<NUMKEYWORDS-1;k++) 325 { 326 location=strstr(inputstr, keywords[k]); 327 if(location != NULL) 328 break; 329 } 330 331 // Build Eliza's response 332 // start with Eliza's canned response, based on the keyword match 333 baseResponse = (char *) responses[k][whichReply[k]]; 334 baseLength = strlen(baseResponse); 335 336 if(baseResponse[baseLength-1] != '*') 337 { 338 // if we have a baseResponse without an asterix, just use it as-is 339 strcat(reply, baseResponse); 340 } 341 else 342 { 343 // if we do have an asterix, fill in the remaining with the user input 344 // use all but the last character of the base response 345 strncat(reply, baseResponse, baseLength-1); 346 347 // now add in the rest of the user's input, starting at <location> 348 // but skip over the keyword itself 349 location+=strlen(keywords[k]); 350 // take them one word at a time, so that we can substitute pronouns 351 token = strtok(location, separator); 352 while(token != NULL) 353 { 354 for(s=0;s<NUMSWAPS;s++) 355 { 356 if(strcmp(SWAPS[s][0], token) == 0) 357 { 358 token = (char *) SWAPS[s][1]; 359 break; 360 } 361 } 362 strcat(reply," "); 363 strcat(reply, token); 364 token=strtok(NULL, separator); 365 }; 366 strcat(reply, "?"); 367 } 368 cprintf("%s\r\n", reply); 369 370 // next time, use the next appropriate reply for that keyword 371 whichReply[k]++; 372 if ( whichReply[k] >= ResponsesPerKeyword[k]) 373 whichReply[k] = 0; 374 375 } 376 377 cprintf( "GOODBYE! THANKS FOR VISITING WITH ME...\r\n"); 378 cgetc(); 379 380 }