3 // ========================================
4 // RPN command code, written by divVerent
5 // Last updated: December 28th, 2011
6 // ========================================
12 return rpn_stack[rpn_sp];
14 print("rpn: stack underflow\n");
19 void rpn_push(string s)
21 if(rpn_sp < MAX_RPN_STACK) {
22 rpn_stack[rpn_sp] = s;
25 print("rpn: stack overflow\n");
32 return rpn_stack[rpn_sp - 1];
34 print("rpn: empty stack\n");
39 void rpn_set(string s)
42 rpn_stack[rpn_sp - 1] = s;
44 print("rpn: empty stack\n");
49 float rpn_getf() { return stof(rpn_get()); }
50 float rpn_popf() { return stof(rpn_pop()); }
51 void rpn_pushf(float f) { return rpn_push(sprintf("%.9g", f)); }
52 void rpn_setf(float f) { return rpn_set(sprintf("%.9g", f)); }
54 void GenericCommand_rpn(float request, float argc, string command)
58 case CMD_REQUEST_COMMAND:
60 float i, j, f, f2, f3, rpnpos;
67 db_put(rpn_db, "stack.pointer", "0");
68 db_put(rpn_db, "stack.pos", "-1");
75 for(rpnpos = 1; rpnpos < argc; ++rpnpos)
77 rpncmd = argv(rpnpos);
80 } else if(stof(substring(rpncmd, 0, 1)) > 0) {
82 } else if(substring(rpncmd, 0, 1) == "0") {
84 } else if(f >= 2 && substring(rpncmd, 0, 1) == "+") {
86 } else if(f >= 2 && substring(rpncmd, 0, 1) == "-") {
88 } else if(f >= 2 && substring(rpncmd, 0, 1) == "/") {
89 rpn_push(substring(rpncmd, 1, strlen(rpncmd) - 1));
90 } else if(rpncmd == "clear") {
92 } else if(rpncmd == "def" || rpncmd == "=") {
99 registercvar(s2, "", 0);
101 registercvar(s2, "");
103 if(!rpn_error) // don't change cvars if a stack error had happened!
108 print("rpn: empty cvar name for 'def'\n");
111 } else if(rpncmd == "defs" || rpncmd == "@") {
115 while(rpn_sp > 1 && (j || i > 0))
117 s = strcat("/", rpn_pop(), " ", s);
124 registercvar(s2, "", 0);
126 registercvar(s2, "");
128 if(!rpn_error) // don't change cvars if a stack error had happened!
133 print("rpn: empty cvar name for 'defs'\n");
136 } else if(rpncmd == "load") {
137 rpn_set(cvar_string(rpn_get()));
138 } else if(rpncmd == "exch") {
143 } else if(rpncmd == "dup") {
145 } else if(rpncmd == "pop") {
147 } else if(rpncmd == "add" || rpncmd == "+") {
149 rpn_setf(rpn_getf() + f);
150 } else if(rpncmd == "sub" || rpncmd == "-") {
152 rpn_setf(rpn_getf() - f);
153 } else if(rpncmd == "mul" || rpncmd == "*") {
155 rpn_setf(rpn_getf() * f);
156 } else if(rpncmd == "div" || rpncmd == "/") {
158 rpn_setf(rpn_getf() / f);
159 } else if(rpncmd == "mod" || rpncmd == "%") {
162 rpn_setf(f2 - f * floor(f2 / f));
163 } else if(rpncmd == "pow" || rpncmd == "**") {
165 rpn_setf(pow(rpn_getf(), f));
166 } else if(rpncmd == "bitand" || rpncmd == "&") {
168 rpn_setf(rpn_getf() & f);
169 } else if(rpncmd == "bitor" || rpncmd == "|") {
171 rpn_setf(rpn_getf() | f);
172 } else if(rpncmd == "bitxor" || rpncmd == "^") {
174 rpn_setf(rpn_getf() ^ f);
175 } else if(rpncmd == "and" || rpncmd == "&&") {
177 rpn_setf(rpn_getf() && f);
178 } else if(rpncmd == "or" || rpncmd == "||") {
180 rpn_setf(rpn_getf() || f);
181 } else if(rpncmd == "xor" || rpncmd == "^^") {
183 rpn_setf(!rpn_getf() != !f);
184 } else if(rpncmd == "bitnot") {
185 rpn_setf(~rpn_popf());
186 } else if(rpncmd == "not") {
187 rpn_setf(!rpn_popf());
188 } else if(rpncmd == "abs") {
189 rpn_setf(fabs(rpn_getf()));
190 } else if(rpncmd == "sgn") {
198 } else if(rpncmd == "neg" || rpncmd == "~") {
199 rpn_setf(-rpn_getf());
200 } else if(rpncmd == "floor" || rpncmd == "f") {
201 rpn_setf(floor(rpn_getf()));
202 } else if(rpncmd == "ceil" || rpncmd == "c") {
203 rpn_setf(ceil(rpn_getf()));
204 } else if(rpncmd == "exp") {
205 rpn_setf(exp(rpn_getf()));
206 } else if(rpncmd == "log") {
207 rpn_setf(exp(rpn_getf()));
208 } else if(rpncmd == "sin") {
209 rpn_setf(sin(rpn_getf()));
210 } else if(rpncmd == "cos") {
211 rpn_setf(cos(rpn_getf()));
212 } else if(rpncmd == "max") {
215 rpn_setf(max(f2, f));
216 } else if(rpncmd == "min") {
219 rpn_setf(min(f2, f));
220 } else if(rpncmd == "bound") {
224 rpn_setf(bound(f3, f2, f));
225 } else if(rpncmd == "when") {
233 } else if(rpncmd == ">" || rpncmd == "gt") {
235 rpn_setf(rpn_getf() > f);
236 } else if(rpncmd == "<" || rpncmd == "lt") {
238 rpn_setf(rpn_getf() < f);
239 } else if(rpncmd == "==" || rpncmd == "eq") {
241 rpn_setf(rpn_getf() == f);
242 } else if(rpncmd == ">=" || rpncmd == "ge") {
244 rpn_setf(rpn_getf() >= f);
245 } else if(rpncmd == "<=" || rpncmd == "le") {
247 rpn_setf(rpn_getf() <= f);
248 } else if(rpncmd == "!=" || rpncmd == "ne") {
250 rpn_setf(rpn_getf() != f);
251 } else if(rpncmd == "rand") {
252 rpn_setf(ceil(random() * rpn_getf()) - 1);
253 } else if(rpncmd == "crc16") {
254 rpn_setf(crc16(false, rpn_get()));
255 } else if(rpncmd == "put") {
261 db_put(rpn_db, s, s2);
263 } else if(rpncmd == "get") {
266 rpn_push(db_get(rpn_db, s));
267 } else if(rpncmd == "dbpush") {
271 i = stof(db_get(rpn_db, "stack.pointer"));
272 db_put(rpn_db, "stack.pointer", ftos(i+1));
273 db_put(rpn_db, strcat("stack.", ftos(i)), s);
275 db_put(rpn_db, "stack.pos", "0");
277 } else if(rpncmd == "dbpop") {
278 i = stof(db_get(rpn_db, "stack.pointer"));
282 db_put(rpn_db, "stack.pointer", s);
283 rpn_push(db_get(rpn_db, strcat("stack.", s)));
284 j = stof(db_get(rpn_db, "stack.pos"));
286 db_put(rpn_db, "stack.pos", ftos(i-2));
289 print("rpn: database underflow\n");
291 } else if(rpncmd == "dbget") {
293 i = stof(db_get(rpn_db, "stack.pointer"));
296 rpn_push(db_get(rpn_db, strcat("stack.", ftos(i-1))));
299 print("rpn: database empty\n");
301 } else if(rpncmd == "dblen") {
302 rpn_push(db_get(rpn_db, "stack.pointer"));
303 } else if(rpncmd == "dbclr") {
305 rpn_db = db_create();
306 db_put(rpn_db, "stack.pointer", "0");
307 db_put(rpn_db, "stack.pos", "-1");
308 } else if(rpncmd == "dbsave") {
312 } else if(rpncmd == "dbload") {
319 } else if(rpncmd == "dbins") {
324 j = stof(db_get(rpn_db, "stack.pointer"));
325 i = stof(db_get(rpn_db, "stack.pos"));
330 db_put(rpn_db, "stack.pos", "0");
333 db_put(rpn_db, "stack.pointer", ftos(j+1));
334 for(--j; j >= i; --j)
336 db_put(rpn_db, strcat("stack.", ftos(j+1)),
337 db_get(rpn_db, (strcat("stack.", ftos(j))))
340 db_put(rpn_db, strcat("stack.", ftos(i)), s);
342 } else if(rpncmd == "dbext") {
343 j = stof(db_get(rpn_db, "stack.pointer"));
344 i = stof(db_get(rpn_db, "stack.pos"));
348 print("rpn: empty database\n");
351 rpn_push(db_get(rpn_db, strcat("stack.", ftos(i))));
352 db_put(rpn_db, "stack.pointer", ftos(j));
355 db_put(rpn_db, "stack.pos", ftos(j-1));
359 db_put(rpn_db, strcat("stack.", ftos(i)),
360 db_get(rpn_db, (strcat("stack.", ftos(i+1))))
366 } else if(rpncmd == "dbread") {
367 s = db_get(rpn_db, "stack.pos");
370 rpn_push(db_get(rpn_db, strcat("stack.", s)));
373 print("rpn: empty database\n");
375 } else if(rpncmd == "dbat") {
376 rpn_push(db_get(rpn_db, "stack.pos"));
377 } else if(rpncmd == "dbmov") {
378 j = stof(db_get(rpn_db, "stack.pointer"));
379 i = stof(db_get(rpn_db, "stack.pos"));
385 print("rpn: database cursor out of bounds\n");
390 db_put(rpn_db, "stack.pos", ftos(i));
393 } else if(rpncmd == "dbgoto") {
395 j = stof(db_get(rpn_db, "stack.pointer"));
399 print("rpn: empty database, cannot move cursor\n");
404 i = stof(db_get(rpn_db, "stack.pointer"))-1;
410 j = stof(db_get(rpn_db, "stack.pointer"));
413 print("rpn: database cursor destination out of bounds\n");
418 db_put(rpn_db, "stack.pos", ftos(i));
421 } else if(rpncmd == "union") {
425 f = tokenize_console(s);
426 f2 = tokenize_console(strcat(s, " ", s2));
427 // tokens 0..(f-1) represent s
428 // tokens f..f2 represent s2
429 // UNION: add all tokens to s that are in s2 but not in s
431 for(i = 0; i < f; ++i)
432 s = strcat(s, " ", argv(i));
433 for(i = f; i < f2; ++i) {
434 for(j = 0; j < f; ++j)
435 if(argv(i) == argv(j))
437 s = strcat(s, " ", argv(i));
440 if(substring(s, 0, 1) == " ")
441 s = substring(s, 1, 99999);
443 tokenize_console(command);
444 } else if(rpncmd == "intersection") {
448 f = tokenize_console(s);
449 f2 = tokenize_console(strcat(s, " ", s2));
450 // tokens 0..(f-1) represent s
451 // tokens f..f2 represent s2
452 // INTERSECTION: keep only the tokens from s that are also in s2
454 for(i = 0; i < f; ++i) {
455 for(j = f; j < f2; ++j)
456 if(argv(i) == argv(j))
458 s = strcat(s, " ", argv(i));
462 if(substring(s, 0, 1) == " ")
463 s = substring(s, 1, 99999);
465 tokenize_console(command);
466 } else if(rpncmd == "difference") {
470 f = tokenize_console(s);
471 f2 = tokenize_console(strcat(s, " ", s2));
472 // tokens 0..(f-1) represent s
473 // tokens f..f2 represent s2
474 // DIFFERENCE: keep only the tokens from s that are not in s2
476 for(i = 0; i < f; ++i) {
477 for(j = f; j < f2; ++j)
478 if(argv(i) == argv(j))
479 goto skip_difference;
480 s = strcat(s, " ", argv(i));
483 if(substring(s, 0, 1) == " ")
484 s = substring(s, 1, 99999);
486 tokenize_console(command);
487 } else if(rpncmd == "shuffle") {
490 f = tokenize_console(s);
492 for(i = 0; i < f - 1; ++i) {
493 // move a random item from i..f-1 to position i
495 f2 = floor(random() * (f - i) + i);
496 for(j = 0; j < i; ++j)
497 s = strcat(s, " ", argv(j));
498 s = strcat(s, " ", argv(f2));
499 for(j = i; j < f; ++j)
501 s = strcat(s, " ", argv(j));
502 f = tokenize_console(s);
505 if(substring(s, 0, 1) == " ")
506 s = substring(s, 1, 99999);
508 tokenize_console(command);
509 } else if(rpncmd == "fexists_assert") {
515 print("rpn: ERROR: ", s, " does not exist!\n");
519 } else if(rpncmd == "fexists") {
528 } else if(rpncmd == "localtime") {
529 rpn_set(strftime(true, rpn_get()));
530 } else if(rpncmd == "gmtime") {
531 rpn_set(strftime(false, rpn_get()));
532 } else if(rpncmd == "time") {
534 } else if(rpncmd == "digest") {
536 rpn_set(digest_hex(s, rpn_get()));
537 } else if(rpncmd == "sprintf1s") {
539 rpn_set(sprintf(s, rpn_get()));
540 } else if(rpncmd == "eval") {
542 command = strcat(s, substring(command, argv_end_index(rpnpos), -1));
543 argc = tokenize_console(command);
546 rpn_push(cvar_string(rpncmd));
554 print("rpn: still on stack: ", s, "\n");
562 case CMD_REQUEST_USAGE:
564 print(strcat("\nUsage:^3 ", GetProgramCommandPrefix(), " rpn EXPRESSION...\n"));
565 print(" Operator description (x: string, s: set, f: float):\n");
566 print(" x pop -----------------------------> : removes the top\n");
567 print(" x dup -----------------------------> x x : duplicates the top\n");
568 print(" x x exch --------------------------> x x : swap the top two\n");
569 print(" /cvarname load --------------------> x : loads a cvar\n");
570 print(" /cvarname x def -------------------> : writes to a cvar\n");
571 print(" f f add|sub|mul|div|mod|pow -------> f : adds/... two numbers\n");
572 print(" f f and|or|xor|bitand|bitor|bitxor > f : logical and bitwise operations\n");
573 print(" f f eq|ne|gt|ge|lt|le|max|min -----> f : compares two numbers\n");
574 print(" f neg|abs|sgn|rand|floor|ceil------> f : negates/... a number\n");
575 print(" f not|bitnot ----------------------> f : logical and bitwise negation\n");
576 print(" f exp|log|sin|cos -----------------> f : exponential function & Co.\n");
577 print(" f f f bound -----------------------> f : bounds the middle number\n");
578 print(" f1 f2 b when ----------------------> f : f1 if b, f2 otherwise\n");
579 print(" s s union|intersection|difference -> s : set operations\n");
580 print(" s shuffle -------------------------> s : randomly arrange elements\n");
581 print(" /key /value put -------------------> : set a database key\n");
582 print(" /key get --------------------------> s : get a database value\n");
583 print(" x dbpush --------------------------> : pushes the top onto the database\n");
584 print(" dbpop|dbget -----------------------> x : removes/reads DB's top\n");
585 print(" dblen|dbat ------------------------> f : gets the DB's size/cursor pos\n");
586 print(" dbclr -----------------------------> : clear the DB\n");
587 print(" s dbsave|dbload--------------------> : save/load the DB to/from a file\n");
588 print(" x dbins ---------------------------> : moves the top into the DB\n");
589 print(" dbext|dbread ----------------------> x : extract/get from the DB's cursor\n");
590 print(" f dbmov|dbgoto --------------------> : move or set the DB's cursor\n");
591 print(" s localtime -----------------------> s : formats the current local time\n");
592 print(" s gmtime --------------------------> s : formats the current UTC time\n");
593 print(" time ------------------------------> f : seconds since VM start\n");
594 print(" s /MD4 digest ---------------------> s : MD4 digest\n");
595 print(" s /SHA256 digest ------------------> s : SHA256 digest\n");
596 print(" s /formatstring sprintf1s ---------> s : sprintf with 1 string (pad, cut)\n");
597 print(" s eval ----------------------------> : does something eval\n");
598 print(" Set operations operate on 'such''strings'.\n");
599 print(" Unknown tokens insert their cvar value.\n");