1 // ========================================
2 // RPN command code, written by divVerent
3 // Last updated: December 28th, 2011
4 // ========================================
10 return rpn_stack[rpn_sp];
12 print("rpn: stack underflow\n");
17 void rpn_push(string s)
19 if(rpn_sp < MAX_RPN_STACK) {
20 rpn_stack[rpn_sp] = s;
23 print("rpn: stack overflow\n");
30 return rpn_stack[rpn_sp - 1];
32 print("rpn: empty stack\n");
37 void rpn_set(string s)
40 rpn_stack[rpn_sp - 1] = s;
42 print("rpn: empty stack\n");
47 float rpn_getf() { return stof(rpn_get()); }
48 float rpn_popf() { return stof(rpn_pop()); }
49 void rpn_pushf(float f) { return rpn_push(ftos(f)); }
50 void rpn_setf(float f) { return rpn_set(ftos(f)); }
52 void GenericCommand_rpn(float request, float argc, string command)
56 case CMD_REQUEST_COMMAND:
58 float i, j, f, f2, f3, rpnpos;
65 db_put(rpn_db, "stack.pointer", "0");
66 db_put(rpn_db, "stack.pos", "-1");
73 for(rpnpos = 1; rpnpos < argc; ++rpnpos)
75 rpncmd = argv(rpnpos);
78 } else if(stof(substring(rpncmd, 0, 1)) > 0) {
80 } else if(substring(rpncmd, 0, 1) == "0") {
82 } else if(f >= 2 && substring(rpncmd, 0, 1) == "+") {
84 } else if(f >= 2 && substring(rpncmd, 0, 1) == "-") {
86 } else if(f >= 2 && substring(rpncmd, 0, 1) == "/") {
87 rpn_push(substring(rpncmd, 1, strlen(rpncmd) - 1));
88 } else if(rpncmd == "clear") {
90 } else if(rpncmd == "def" || rpncmd == "=") {
97 registercvar(s2, "", 0);
101 if(!rpn_error) // don't change cvars if a stack error had happened!
106 print("rpn: empty cvar name for 'def'\n");
109 } else if(rpncmd == "defs" || rpncmd == "@") {
113 while(rpn_sp > 1 && (j || i > 0))
115 s = strcat("/", rpn_pop(), " ", s);
122 registercvar(s2, "", 0);
124 registercvar(s2, "");
126 if(!rpn_error) // don't change cvars if a stack error had happened!
131 print("rpn: empty cvar name for 'defs'\n");
134 } else if(rpncmd == "load") {
135 rpn_set(cvar_string(rpn_get()));
136 } else if(rpncmd == "exch") {
141 } else if(rpncmd == "dup") {
143 } else if(rpncmd == "pop") {
145 } else if(rpncmd == "add" || rpncmd == "+") {
147 rpn_setf(rpn_getf() + f);
148 } else if(rpncmd == "sub" || rpncmd == "-") {
150 rpn_setf(rpn_getf() - f);
151 } else if(rpncmd == "mul" || rpncmd == "*") {
153 rpn_setf(rpn_getf() * f);
154 } else if(rpncmd == "div" || rpncmd == "/") {
156 rpn_setf(rpn_getf() / f);
157 } else if(rpncmd == "mod" || rpncmd == "%") {
160 rpn_setf(f2 - f * floor(f2 / f));
161 } else if(rpncmd == "pow" || rpncmd == "**") {
163 rpn_setf(pow(rpn_getf(), f));
164 } else if(rpncmd == "bitand" || rpncmd == "&") {
166 rpn_setf(rpn_getf() & f);
167 } else if(rpncmd == "bitor" || rpncmd == "|") {
169 rpn_setf(rpn_getf() | f);
170 } else if(rpncmd == "bitxor" || rpncmd == "^") {
172 rpn_setf(rpn_getf() ^ f);
173 } else if(rpncmd == "and" || rpncmd == "&&") {
175 rpn_setf(rpn_getf() && f);
176 } else if(rpncmd == "or" || rpncmd == "||") {
178 rpn_setf(rpn_getf() || f);
179 } else if(rpncmd == "xor" || rpncmd == "^^") {
181 rpn_setf(!rpn_getf() != !f);
182 } else if(rpncmd == "bitnot") {
183 rpn_setf(~rpn_popf());
184 } else if(rpncmd == "not") {
185 rpn_setf(!rpn_popf());
186 } else if(rpncmd == "abs") {
187 rpn_setf(fabs(rpn_getf()));
188 } else if(rpncmd == "sgn") {
196 } else if(rpncmd == "neg" || rpncmd == "~") {
197 rpn_setf(-rpn_getf());
198 } else if(rpncmd == "floor" || rpncmd == "f") {
199 rpn_setf(floor(rpn_getf()));
200 } else if(rpncmd == "ceil" || rpncmd == "c") {
201 rpn_setf(ceil(rpn_getf()));
202 } else if(rpncmd == "exp") {
203 rpn_setf(exp(rpn_getf()));
204 } else if(rpncmd == "log") {
205 rpn_setf(exp(rpn_getf()));
206 } else if(rpncmd == "max") {
209 rpn_setf(max(f2, f));
210 } else if(rpncmd == "min") {
213 rpn_setf(min(f2, f));
214 } else if(rpncmd == "bound") {
218 rpn_setf(bound(f3, f2, f));
219 } else if(rpncmd == "when") {
227 } else if(rpncmd == ">" || rpncmd == "gt") {
229 rpn_setf(rpn_getf() > f);
230 } else if(rpncmd == "<" || rpncmd == "lt") {
232 rpn_setf(rpn_getf() < f);
233 } else if(rpncmd == "==" || rpncmd == "eq") {
235 rpn_setf(rpn_getf() == f);
236 } else if(rpncmd == ">=" || rpncmd == "ge") {
238 rpn_setf(rpn_getf() >= f);
239 } else if(rpncmd == "<=" || rpncmd == "le") {
241 rpn_setf(rpn_getf() <= f);
242 } else if(rpncmd == "!=" || rpncmd == "ne") {
244 rpn_setf(rpn_getf() != f);
245 } else if(rpncmd == "rand") {
246 rpn_setf(ceil(random() * rpn_getf()) - 1);
247 } else if(rpncmd == "crc16") {
248 rpn_setf(crc16(FALSE, rpn_get()));
249 } else if(rpncmd == "put") {
255 db_put(rpn_db, s, s2);
257 } else if(rpncmd == "get") {
260 rpn_push(db_get(rpn_db, s));
261 } else if(rpncmd == "dbpush") {
265 i = stof(db_get(rpn_db, "stack.pointer"));
266 db_put(rpn_db, "stack.pointer", ftos(i+1));
267 db_put(rpn_db, strcat("stack.", ftos(i)), s);
269 db_put(rpn_db, "stack.pos", "0");
271 } else if(rpncmd == "dbpop") {
272 i = stof(db_get(rpn_db, "stack.pointer"));
276 db_put(rpn_db, "stack.pointer", s);
277 rpn_push(db_get(rpn_db, strcat("stack.", s)));
278 j = stof(db_get(rpn_db, "stack.pos"));
280 db_put(rpn_db, "stack.pos", ftos(i-2));
283 print("rpn: database underflow\n");
285 } else if(rpncmd == "dbget") {
287 i = stof(db_get(rpn_db, "stack.pointer"));
290 rpn_push(db_get(rpn_db, strcat("stack.", ftos(i-1))));
293 print("rpn: database empty\n");
295 } else if(rpncmd == "dblen") {
296 rpn_push(db_get(rpn_db, "stack.pointer"));
297 } else if(rpncmd == "dbclr") {
299 rpn_db = db_create();
300 db_put(rpn_db, "stack.pointer", "0");
301 db_put(rpn_db, "stack.pos", "-1");
302 } else if(rpncmd == "dbsave") {
306 } else if(rpncmd == "dbload") {
313 } else if(rpncmd == "dbins") {
318 j = stof(db_get(rpn_db, "stack.pointer"));
319 i = stof(db_get(rpn_db, "stack.pos"));
324 db_put(rpn_db, "stack.pos", "0");
327 db_put(rpn_db, "stack.pointer", ftos(j+1));
328 for(--j; j >= i; --j)
330 db_put(rpn_db, strcat("stack.", ftos(j+1)),
331 db_get(rpn_db, (strcat("stack.", ftos(j))))
334 db_put(rpn_db, strcat("stack.", ftos(i)), s);
336 } else if(rpncmd == "dbext") {
337 j = stof(db_get(rpn_db, "stack.pointer"));
338 i = stof(db_get(rpn_db, "stack.pos"));
342 print("rpn: empty database\n");
345 rpn_push(db_get(rpn_db, strcat("stack.", ftos(i))));
346 db_put(rpn_db, "stack.pointer", ftos(j));
349 db_put(rpn_db, "stack.pos", ftos(j-1));
353 db_put(rpn_db, strcat("stack.", ftos(i)),
354 db_get(rpn_db, (strcat("stack.", ftos(i+1))))
360 } else if(rpncmd == "dbread") {
361 s = db_get(rpn_db, "stack.pos");
364 rpn_push(db_get(rpn_db, strcat("stack.", s)));
367 print("rpn: empty database\n");
369 } else if(rpncmd == "dbat") {
370 rpn_push(db_get(rpn_db, "stack.pos"));
371 } else if(rpncmd == "dbmov") {
372 j = stof(db_get(rpn_db, "stack.pointer"));
373 i = stof(db_get(rpn_db, "stack.pos"));
379 print("rpn: database cursor out of bounds\n");
384 db_put(rpn_db, "stack.pos", ftos(i));
387 } else if(rpncmd == "dbgoto") {
389 j = stof(db_get(rpn_db, "stack.pointer"));
393 print("rpn: empty database, cannot move cursor\n");
398 i = stof(db_get(rpn_db, "stack.pointer"))-1;
404 j = stof(db_get(rpn_db, "stack.pointer"));
407 print("rpn: database cursor destination out of bounds\n");
412 db_put(rpn_db, "stack.pos", ftos(i));
415 } else if(rpncmd == "union") {
419 f = tokenize_console(s);
420 f2 = tokenize_console(strcat(s, " ", s2));
421 // tokens 0..(f-1) represent s
422 // tokens f..f2 represent s2
423 // UNION: add all tokens to s that are in s2 but not in s
425 for(i = 0; i < f; ++i)
426 s = strcat(s, " ", argv(i));
427 for(i = f; i < f2; ++i) {
428 for(j = 0; j < f; ++j)
429 if(argv(i) == argv(j))
431 s = strcat(s, " ", argv(i));
434 if(substring(s, 0, 1) == " ")
435 s = substring(s, 1, 99999);
437 tokenize_console(command);
438 } else if(rpncmd == "intersection") {
442 f = tokenize_console(s);
443 f2 = tokenize_console(strcat(s, " ", s2));
444 // tokens 0..(f-1) represent s
445 // tokens f..f2 represent s2
446 // INTERSECTION: keep only the tokens from s that are also in s2
448 for(i = 0; i < f; ++i) {
449 for(j = f; j < f2; ++j)
450 if(argv(i) == argv(j))
452 s = strcat(s, " ", argv(i));
456 if(substring(s, 0, 1) == " ")
457 s = substring(s, 1, 99999);
459 tokenize_console(command);
460 } else if(rpncmd == "difference") {
464 f = tokenize_console(s);
465 f2 = tokenize_console(strcat(s, " ", s2));
466 // tokens 0..(f-1) represent s
467 // tokens f..f2 represent s2
468 // DIFFERENCE: keep only the tokens from s that are not in s2
470 for(i = 0; i < f; ++i) {
471 for(j = f; j < f2; ++j)
472 if(argv(i) == argv(j))
473 goto skip_difference;
474 s = strcat(s, " ", argv(i));
477 if(substring(s, 0, 1) == " ")
478 s = substring(s, 1, 99999);
480 tokenize_console(command);
481 } else if(rpncmd == "shuffle") {
484 f = tokenize_console(s);
486 for(i = 0; i < f - 1; ++i) {
487 // move a random item from i..f-1 to position i
489 f2 = floor(random() * (f - i) + i);
490 for(j = 0; j < i; ++j)
491 s = strcat(s, " ", argv(j));
492 s = strcat(s, " ", argv(f2));
493 for(j = i; j < f; ++j)
495 s = strcat(s, " ", argv(j));
496 f = tokenize_console(s);
499 if(substring(s, 0, 1) == " ")
500 s = substring(s, 1, 99999);
502 tokenize_console(command);
503 } else if(rpncmd == "fexists_assert") {
509 print("rpn: ERROR: ", s, " does not exist!\n");
513 } else if(rpncmd == "fexists") {
522 } else if(rpncmd == "localtime") {
523 rpn_set(strftime(TRUE, rpn_get()));
524 } else if(rpncmd == "gmtime") {
525 rpn_set(strftime(FALSE, rpn_get()));
526 } else if(rpncmd == "time") {
528 } else if(rpncmd == "digest") {
530 rpn_set(digest_hex(s, rpn_get()));
531 } else if(rpncmd == "sprintf1s") {
533 rpn_set(sprintf(s, rpn_get()));
535 rpn_push(cvar_string(rpncmd));
543 print("rpn: still on stack: ", s, "\n");
551 case CMD_REQUEST_USAGE:
553 print(strcat("\nUsage:^3 ", GetProgramCommandPrefix(), " rpn EXPRESSION...\n"));
554 print(" Operator description (x: string, s: set, f: float):\n");
555 print(" x pop -----------------------------> : removes the top\n");
556 print(" x dup -----------------------------> x x : duplicates the top\n");
557 print(" x x exch --------------------------> x x : swap the top two\n");
558 print(" /cvarname load --------------------> x : loads a cvar\n");
559 print(" /cvarname x def -------------------> : writes to a cvar\n");
560 print(" f f add|sub|mul|div|mod|pow -------> f : adds/... two numbers\n");
561 print(" f f and|or|xor|bitand|bitor|bitxor > f : logical and bitwise operations\n");
562 print(" f f eq|ne|gt|ge|lt|le|max|min -----> f : compares two numbers\n");
563 print(" f neg|abs|sgn|rand|floor|ceil------> f : negates/... a number\n");
564 print(" f not|bitnot ----------------------> f : logical and bitwise negation\n");
565 print(" f exp|log -------------------------> f : exponential function & Co.\n");
566 print(" f f f bound -----------------------> f : bounds the middle number\n");
567 print(" f1 f2 b when ----------------------> f : f1 if b, f2 otherwise\n");
568 print(" s s union|intersection|difference -> s : set operations\n");
569 print(" s shuffle -------------------------> s : randomly arrange elements\n");
570 print(" /key /value put -------------------> : set a database key\n");
571 print(" /key get --------------------------> s : get a database value\n");
572 print(" x dbpush --------------------------> : pushes the top onto the database\n");
573 print(" dbpop|dbget -----------------------> x : removes/reads DB's top\n");
574 print(" dblen|dbat ------------------------> f : gets the DB's size/cursor pos\n");
575 print(" dbclr -----------------------------> : clear the DB\n");
576 print(" s dbsave|dbload--------------------> : save/load the DB to/from a file\n");
577 print(" x dbins ---------------------------> : moves the top into the DB\n");
578 print(" dbext|dbread ----------------------> x : extract/get from the DB's cursor\n");
579 print(" f dbmov|dbgoto --------------------> : move or set the DB's cursor\n");
580 print(" s localtime -----------------------> s : formats the current local time\n");
581 print(" s gmtime --------------------------> s : formats the current UTC time\n");
582 print(" time ------------------------------> f : seconds since VM start\n");
583 print(" s /MD4 digest ---------------------> s : MD4 digest\n");
584 print(" s /SHA256 digest ------------------> s : SHA256 digest\n");
585 print(" s /formatstring sprintf1s ---------> s : sprintf with 1 string (pad, cut)\n");
586 print(" Set operations operate on 'such''strings'.\n");
587 print(" Unknown tokens insert their cvar value.\n");