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1 | /* $RCSfile: eval.c,v $$Revision: 4.1 $$Date: 92/08/07 18:20:29 $ |
2 | * |
3 | * Copyright (c) 1991, Larry Wall |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. |
7 | * |
8 | * $Log: eval.c,v $ |
9 | * Revision 4.1 92/08/07 18:20:29 lwall |
10 | * |
11 | * Revision 4.0.1.4 92/06/08 13:20:20 lwall |
12 | * patch20: added explicit time_t support |
13 | * patch20: fixed confusion between a *var's real name and its effective name |
14 | * patch20: added Atari ST portability |
15 | * patch20: new warning for use of x with non-numeric right operand |
16 | * patch20: modulus with highest bit in left operand set didn't always work |
17 | * patch20: dbmclose(%array) didn't work |
18 | * patch20: added ... as variant on .. |
19 | * patch20: O_PIPE conflicted with Atari |
20 | * |
21 | * Revision 4.0.1.3 91/11/05 17:15:21 lwall |
22 | * patch11: prepared for ctype implementations that don't define isascii() |
23 | * patch11: various portability fixes |
24 | * patch11: added sort {} LIST |
25 | * patch11: added eval {} |
26 | * patch11: sysread() in socket was substituting recv() |
27 | * patch11: a last statement outside any block caused occasional core dumps |
28 | * patch11: missing arguments caused core dump in -D8 code |
29 | * patch11: eval 'stuff' now optimized to eval {stuff} |
30 | * |
31 | * Revision 4.0.1.2 91/06/07 11:07:23 lwall |
32 | * patch4: new copyright notice |
33 | * patch4: length($`), length($&), length($') now optimized to avoid string copy |
34 | * patch4: assignment wasn't correctly de-tainting the assigned variable. |
35 | * patch4: default top-of-form format is now FILEHANDLE_TOP |
36 | * patch4: added $^P variable to control calling of perldb routines |
37 | * patch4: taintchecks could improperly modify parent in vfork() |
38 | * patch4: many, many itty-bitty portability fixes |
39 | * |
40 | * Revision 4.0.1.1 91/04/11 17:43:48 lwall |
41 | * patch1: fixed failed fork to return undef as documented |
42 | * patch1: reduced maximum branch distance in eval.c |
43 | * |
44 | * Revision 4.0 91/03/20 01:16:48 lwall |
45 | * 4.0 baseline. |
46 | * |
47 | */ |
48 | |
49 | #include "EXTERN.h" |
50 | #include "perl.h" |
51 | |
52 | extern int (*ppaddr[])(); |
53 | extern int mark[]; |
54 | |
55 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) |
56 | #include <signal.h> |
57 | #endif |
58 | |
59 | #ifdef I_FCNTL |
60 | #include <fcntl.h> |
61 | #endif |
62 | #ifdef MSDOS |
63 | /* I_FCNTL *MUST* not be defined for MS-DOS and OS/2 |
64 | but fcntl.h is required for O_BINARY */ |
65 | #include <fcntl.h> |
66 | #endif |
67 | #ifdef I_SYS_FILE |
68 | #include <sys/file.h> |
69 | #endif |
70 | #ifdef I_VFORK |
71 | # include <vfork.h> |
72 | #endif |
73 | |
74 | double sin(), cos(), atan2(), pow(); |
75 | |
76 | char *getlogin(); |
77 | |
78 | int |
79 | eval(arg,gimme,sp) |
80 | register ARG *arg; |
81 | int gimme; |
82 | register int sp; |
83 | { |
84 | register STR *str; |
85 | register int anum; |
86 | register int optype; |
87 | register STR **st; |
88 | int maxarg; |
89 | double value; |
90 | register char *tmps; |
91 | char *tmps2; |
92 | int argflags; |
93 | int argtype; |
94 | union argptr argptr; |
95 | int arglast[8]; /* highest sp for arg--valid only for non-O_LIST args */ |
96 | unsigned long tmpulong; |
97 | long tmplong; |
98 | time_t when; |
99 | STRLEN tmplen; |
100 | FILE *fp; |
101 | STR *tmpstr; |
102 | FCMD *form; |
103 | STAB *stab; |
104 | STAB *stab2; |
105 | STIO *stio; |
106 | ARRAY *ary; |
107 | int old_rslen; |
108 | int old_rschar; |
109 | VOIDRET (*ihand)(); /* place to save signal during system() */ |
110 | VOIDRET (*qhand)(); /* place to save signal during system() */ |
111 | bool assigning = FALSE; |
112 | int mymarkbase = savestack->ary_fill; |
113 | |
114 | if (!arg) |
115 | goto say_undef; |
116 | optype = arg->arg_type; |
117 | maxarg = arg->arg_len; |
118 | arglast[0] = sp; |
119 | str = arg->arg_ptr.arg_str; |
120 | if (sp + maxarg > stack->ary_max) |
121 | astore(stack, sp + maxarg, Nullstr); |
122 | st = stack->ary_array; |
123 | |
124 | #ifdef DEBUGGING |
125 | if (debug) { |
126 | if (debug & 8) { |
127 | deb("%s (%lx) %d args:\n",opname[optype],arg,maxarg); |
128 | } |
129 | debname[dlevel] = opname[optype][0]; |
130 | debdelim[dlevel] = ':'; |
131 | if (++dlevel >= dlmax) |
132 | grow_dlevel(); |
133 | } |
134 | #endif |
135 | |
136 | if (mark[optype]) { |
137 | saveint(&markbase); |
138 | markbase = mymarkbase; |
139 | saveint(&stack_mark); |
140 | stack_mark = sp; |
141 | } |
142 | for (anum = 1; anum <= maxarg; anum++) { |
143 | argflags = arg[anum].arg_flags; |
144 | argtype = arg[anum].arg_type; |
145 | argptr = arg[anum].arg_ptr; |
146 | re_eval: |
147 | switch (argtype) { |
148 | default: |
149 | if (!ppaddr[optype] || optype == O_SUBR || optype == O_DBSUBR) { |
150 | st[++sp] = &str_undef; |
151 | } |
152 | #ifdef DEBUGGING |
153 | tmps = "NULL"; |
154 | #endif |
155 | break; |
156 | case A_EXPR: |
157 | #ifdef DEBUGGING |
158 | if (debug & 8) { |
159 | tmps = "EXPR"; |
160 | deb("%d.EXPR =>\n",anum); |
161 | } |
162 | #endif |
163 | sp = eval(argptr.arg_arg, |
164 | (argflags & AF_ARYOK) ? G_ARRAY : G_SCALAR, sp); |
165 | if (sp + (maxarg - anum) > stack->ary_max) |
166 | astore(stack, sp + (maxarg - anum), Nullstr); |
167 | st = stack->ary_array; /* possibly reallocated */ |
168 | break; |
169 | case A_CMD: |
170 | #ifdef DEBUGGING |
171 | if (debug & 8) { |
172 | tmps = "CMD"; |
173 | deb("%d.CMD (%lx) =>\n",anum,argptr.arg_cmd); |
174 | } |
175 | #endif |
176 | sp = cmd_exec(argptr.arg_cmd, gimme, sp); |
177 | if (sp + (maxarg - anum) > stack->ary_max) |
178 | astore(stack, sp + (maxarg - anum), Nullstr); |
179 | st = stack->ary_array; /* possibly reallocated */ |
180 | break; |
181 | case A_LARYSTAB: |
182 | ++sp; |
183 | switch (optype) { |
184 | case O_ITEM2: argtype = 2; break; |
185 | case O_ITEM3: argtype = 3; break; |
186 | default: argtype = anum; break; |
187 | } |
188 | str = afetch(stab_array(argptr.arg_stab), |
189 | arg[argtype].arg_len - arybase, TRUE); |
190 | #ifdef DEBUGGING |
191 | if (debug & 8) { |
192 | (void)sprintf(buf,"LARYSTAB $%s[%d]",stab_name(argptr.arg_stab), |
193 | arg[argtype].arg_len); |
194 | tmps = buf; |
195 | } |
196 | #endif |
197 | goto do_crement; |
198 | case A_ARYSTAB: |
199 | switch (optype) { |
200 | case O_ITEM2: argtype = 2; break; |
201 | case O_ITEM3: argtype = 3; break; |
202 | default: argtype = anum; break; |
203 | } |
204 | st[++sp] = afetch(stab_array(argptr.arg_stab), |
205 | arg[argtype].arg_len - arybase, FALSE); |
206 | #ifdef DEBUGGING |
207 | if (debug & 8) { |
208 | (void)sprintf(buf,"ARYSTAB $%s[%d]",stab_name(argptr.arg_stab), |
209 | arg[argtype].arg_len); |
210 | tmps = buf; |
211 | } |
212 | #endif |
213 | break; |
214 | case A_STAR: |
215 | stab = argptr.arg_stab; |
216 | st[++sp] = (STR*)stab; |
217 | if (!stab_xarray(stab)) |
218 | aadd(stab); |
219 | if (!stab_xhash(stab)) |
220 | hadd(stab); |
221 | if (!stab_io(stab)) |
222 | stab_io(stab) = stio_new(); |
223 | #ifdef DEBUGGING |
224 | if (debug & 8) { |
225 | (void)sprintf(buf,"STAR *%s -> *%s", |
226 | stab_name(argptr.arg_stab), stab_ename(argptr.arg_stab)); |
227 | tmps = buf; |
228 | } |
229 | #endif |
230 | break; |
231 | case A_LSTAR: |
232 | str = st[++sp] = (STR*)argptr.arg_stab; |
233 | #ifdef DEBUGGING |
234 | if (debug & 8) { |
235 | (void)sprintf(buf,"LSTAR *%s -> *%s", |
236 | stab_name(argptr.arg_stab), stab_ename(argptr.arg_stab)); |
237 | tmps = buf; |
238 | } |
239 | #endif |
240 | break; |
241 | case A_STAB: |
242 | st[++sp] = STAB_STR(argptr.arg_stab); |
243 | #ifdef DEBUGGING |
244 | if (debug & 8) { |
245 | (void)sprintf(buf,"STAB $%s",stab_name(argptr.arg_stab)); |
246 | tmps = buf; |
247 | } |
248 | #endif |
249 | break; |
250 | case A_LENSTAB: |
251 | str_numset(str, (double)STAB_LEN(argptr.arg_stab)); |
252 | st[++sp] = str; |
253 | #ifdef DEBUGGING |
254 | if (debug & 8) { |
255 | (void)sprintf(buf,"LENSTAB $%s",stab_name(argptr.arg_stab)); |
256 | tmps = buf; |
257 | } |
258 | #endif |
259 | break; |
260 | case A_LEXPR: |
261 | #ifdef DEBUGGING |
262 | if (debug & 8) { |
263 | tmps = "LEXPR"; |
264 | deb("%d.LEXPR =>\n",anum); |
265 | } |
266 | #endif |
267 | if (argflags & AF_ARYOK) { |
268 | sp = eval(argptr.arg_arg, G_ARRAY, sp); |
269 | if (sp + (maxarg - anum) > stack->ary_max) |
270 | astore(stack, sp + (maxarg - anum), Nullstr); |
271 | st = stack->ary_array; /* possibly reallocated */ |
272 | } |
273 | else { |
274 | sp = eval(argptr.arg_arg, G_SCALAR, sp); |
275 | st = stack->ary_array; /* possibly reallocated */ |
276 | str = st[sp]; |
277 | goto do_crement; |
278 | } |
279 | break; |
280 | case A_LVAL: |
281 | #ifdef DEBUGGING |
282 | if (debug & 8) { |
283 | (void)sprintf(buf,"LVAL $%s",stab_name(argptr.arg_stab)); |
284 | tmps = buf; |
285 | } |
286 | #endif |
287 | ++sp; |
288 | str = STAB_STR(argptr.arg_stab); |
289 | if (!str) |
290 | fatal("panic: A_LVAL"); |
291 | do_crement: |
292 | assigning = TRUE; |
293 | if (argflags & AF_PRE) { |
294 | if (argflags & AF_UP) |
295 | str_inc(str); |
296 | else |
297 | str_dec(str); |
298 | STABSET(str); |
299 | st[sp] = str; |
300 | str = arg->arg_ptr.arg_str; |
301 | } |
302 | else if (argflags & AF_POST) { |
303 | st[sp] = str_mortal(str); |
304 | if (argflags & AF_UP) |
305 | str_inc(str); |
306 | else |
307 | str_dec(str); |
308 | STABSET(str); |
309 | str = arg->arg_ptr.arg_str; |
310 | } |
311 | else |
312 | st[sp] = str; |
313 | break; |
314 | case A_LARYLEN: |
315 | ++sp; |
316 | stab = argptr.arg_stab; |
317 | str = stab_array(argptr.arg_stab)->ary_magic; |
318 | if (optype != O_SASSIGN || argflags & (AF_PRE|AF_POST)) |
319 | str_numset(str,(double)(stab_array(stab)->ary_fill+arybase)); |
320 | #ifdef DEBUGGING |
321 | tmps = "LARYLEN"; |
322 | #endif |
323 | if (!str) |
324 | fatal("panic: A_LEXPR"); |
325 | goto do_crement; |
326 | case A_ARYLEN: |
327 | stab = argptr.arg_stab; |
328 | st[++sp] = stab_array(stab)->ary_magic; |
329 | str_numset(st[sp],(double)(stab_array(stab)->ary_fill+arybase)); |
330 | #ifdef DEBUGGING |
331 | tmps = "ARYLEN"; |
332 | #endif |
333 | break; |
334 | case A_SINGLE: |
335 | st[++sp] = argptr.arg_str; |
336 | #ifdef DEBUGGING |
337 | tmps = "SINGLE"; |
338 | #endif |
339 | break; |
340 | case A_DOUBLE: |
341 | (void) interp(str,argptr.arg_str,sp); |
342 | st = stack->ary_array; |
343 | st[++sp] = str; |
344 | #ifdef DEBUGGING |
345 | tmps = "DOUBLE"; |
346 | #endif |
347 | break; |
348 | case A_BACKTICK: |
349 | tmps = str_get(interp(str,argptr.arg_str,sp)); |
350 | st = stack->ary_array; |
351 | #ifdef TAINT |
352 | TAINT_PROPER("``"); |
353 | #endif |
354 | fp = mypopen(tmps,"r"); |
355 | str_set(str,""); |
356 | if (fp) { |
357 | if (gimme == G_SCALAR) { |
358 | while (str_gets(str,fp,str->str_cur) != Nullch) |
359 | /*SUPPRESS 530*/ |
360 | ; |
361 | } |
362 | else { |
363 | for (;;) { |
364 | if (++sp > stack->ary_max) { |
365 | astore(stack, sp, Nullstr); |
366 | st = stack->ary_array; |
367 | } |
368 | str = st[sp] = Str_new(56,80); |
369 | if (str_gets(str,fp,0) == Nullch) { |
370 | sp--; |
371 | break; |
372 | } |
373 | if (str->str_len - str->str_cur > 20) { |
374 | str->str_len = str->str_cur+1; |
375 | Renew(str->str_ptr, str->str_len, char); |
376 | } |
377 | str_2mortal(str); |
378 | } |
379 | } |
380 | statusvalue = mypclose(fp); |
381 | } |
382 | else |
383 | statusvalue = -1; |
384 | |
385 | if (gimme == G_SCALAR) |
386 | st[++sp] = str; |
387 | #ifdef DEBUGGING |
388 | tmps = "BACK"; |
389 | #endif |
390 | break; |
391 | case A_WANTARRAY: |
392 | { |
393 | if (curcsv->wantarray == G_ARRAY) |
394 | st[++sp] = &str_yes; |
395 | else |
396 | st[++sp] = &str_no; |
397 | } |
398 | #ifdef DEBUGGING |
399 | tmps = "WANTARRAY"; |
400 | #endif |
401 | break; |
402 | case A_INDREAD: |
403 | last_in_stab = stabent(str_get(STAB_STR(argptr.arg_stab)),TRUE); |
404 | old_rschar = rschar; |
405 | old_rslen = rslen; |
406 | goto do_read; |
407 | case A_GLOB: |
408 | argflags |= AF_POST; /* enable newline chopping */ |
409 | last_in_stab = argptr.arg_stab; |
410 | old_rschar = rschar; |
411 | old_rslen = rslen; |
412 | rslen = 1; |
413 | #ifdef DOSISH |
414 | rschar = 0; |
415 | #else |
416 | #ifdef CSH |
417 | rschar = 0; |
418 | #else |
419 | rschar = '\n'; |
420 | #endif /* !CSH */ |
421 | #endif /* !MSDOS */ |
422 | goto do_read; |
423 | case A_READ: |
424 | last_in_stab = argptr.arg_stab; |
425 | old_rschar = rschar; |
426 | old_rslen = rslen; |
427 | do_read: |
428 | if (anum > 1) /* assign to scalar */ |
429 | gimme = G_SCALAR; /* force context to scalar */ |
430 | if (gimme == G_ARRAY) |
431 | str = Str_new(57,0); |
432 | ++sp; |
433 | fp = Nullfp; |
434 | if (stab_io(last_in_stab)) { |
435 | fp = stab_io(last_in_stab)->ifp; |
436 | if (!fp) { |
437 | if (stab_io(last_in_stab)->flags & IOF_ARGV) { |
438 | if (stab_io(last_in_stab)->flags & IOF_START) { |
439 | stab_io(last_in_stab)->flags &= ~IOF_START; |
440 | stab_io(last_in_stab)->lines = 0; |
441 | if (alen(stab_array(last_in_stab)) < 0) { |
442 | tmpstr = str_make("-",1); /* assume stdin */ |
443 | (void)apush(stab_array(last_in_stab), tmpstr); |
444 | } |
445 | } |
446 | fp = nextargv(last_in_stab); |
447 | if (!fp) { /* Note: fp != stab_io(last_in_stab)->ifp */ |
448 | (void)do_close(last_in_stab,FALSE); /* now it does*/ |
449 | stab_io(last_in_stab)->flags |= IOF_START; |
450 | } |
451 | } |
452 | else if (argtype == A_GLOB) { |
453 | (void) interp(str,stab_val(last_in_stab),sp); |
454 | st = stack->ary_array; |
455 | tmpstr = Str_new(55,0); |
456 | #ifdef DOSISH |
457 | str_set(tmpstr, "perlglob "); |
458 | str_scat(tmpstr,str); |
459 | str_cat(tmpstr," |"); |
460 | #else |
461 | #ifdef CSH |
462 | str_nset(tmpstr,cshname,cshlen); |
463 | str_cat(tmpstr," -cf 'set nonomatch; glob "); |
464 | str_scat(tmpstr,str); |
465 | str_cat(tmpstr,"'|"); |
466 | #else |
467 | str_set(tmpstr, "echo "); |
468 | str_scat(tmpstr,str); |
469 | str_cat(tmpstr, |
470 | "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|"); |
471 | #endif /* !CSH */ |
472 | #endif /* !MSDOS */ |
473 | (void)do_open(last_in_stab,tmpstr->str_ptr, |
474 | tmpstr->str_cur); |
475 | fp = stab_io(last_in_stab)->ifp; |
476 | str_free(tmpstr); |
477 | } |
478 | } |
479 | } |
480 | if (!fp && dowarn) |
481 | warn("Read on closed filehandle <%s>",stab_ename(last_in_stab)); |
482 | tmplen = str->str_len; /* remember if already alloced */ |
483 | if (!tmplen) |
484 | Str_Grow(str,80); /* try short-buffering it */ |
485 | keepgoing: |
486 | if (!fp) |
487 | st[sp] = &str_undef; |
488 | else if (!str_gets(str,fp, optype == O_RCAT ? str->str_cur : 0)) { |
489 | clearerr(fp); |
490 | if (stab_io(last_in_stab)->flags & IOF_ARGV) { |
491 | fp = nextargv(last_in_stab); |
492 | if (fp) |
493 | goto keepgoing; |
494 | (void)do_close(last_in_stab,FALSE); |
495 | stab_io(last_in_stab)->flags |= IOF_START; |
496 | } |
497 | else if (argflags & AF_POST) { |
498 | (void)do_close(last_in_stab,FALSE); |
499 | } |
500 | st[sp] = &str_undef; |
501 | rschar = old_rschar; |
502 | rslen = old_rslen; |
503 | if (gimme == G_ARRAY) { |
504 | --sp; |
505 | str_2mortal(str); |
506 | goto array_return; |
507 | } |
508 | break; |
509 | } |
510 | else { |
511 | stab_io(last_in_stab)->lines++; |
512 | st[sp] = str; |
513 | #ifdef TAINT |
514 | str->str_tainted = 1; /* Anything from the outside world...*/ |
515 | #endif |
516 | if (argflags & AF_POST) { |
517 | if (str->str_cur > 0) |
518 | str->str_cur--; |
519 | if (str->str_ptr[str->str_cur] == rschar) |
520 | str->str_ptr[str->str_cur] = '\0'; |
521 | else |
522 | str->str_cur++; |
523 | for (tmps = str->str_ptr; *tmps; tmps++) |
524 | if (!isALPHA(*tmps) && !isDIGIT(*tmps) && |
525 | index("$&*(){}[]'\";\\|?<>~`",*tmps)) |
526 | break; |
527 | if (*tmps && stat(str->str_ptr,&statbuf) < 0) |
528 | goto keepgoing; /* unmatched wildcard? */ |
529 | } |
530 | if (gimme == G_ARRAY) { |
531 | if (str->str_len - str->str_cur > 20) { |
532 | str->str_len = str->str_cur+1; |
533 | Renew(str->str_ptr, str->str_len, char); |
534 | } |
535 | str_2mortal(str); |
536 | if (++sp > stack->ary_max) { |
537 | astore(stack, sp, Nullstr); |
538 | st = stack->ary_array; |
539 | } |
540 | str = Str_new(58,80); |
541 | goto keepgoing; |
542 | } |
543 | else if (!tmplen && str->str_len - str->str_cur > 80) { |
544 | /* try to reclaim a bit of scalar space on 1st alloc */ |
545 | if (str->str_cur < 60) |
546 | str->str_len = 80; |
547 | else |
548 | str->str_len = str->str_cur+40; /* allow some slop */ |
549 | Renew(str->str_ptr, str->str_len, char); |
550 | } |
551 | } |
552 | rschar = old_rschar; |
553 | rslen = old_rslen; |
554 | #ifdef DEBUGGING |
555 | tmps = "READ"; |
556 | #endif |
557 | break; |
558 | } |
559 | #ifdef DEBUGGING |
560 | if (debug & 8) { |
561 | if (strEQ(tmps, "NULL")) |
562 | deb("%d.%s\n",anum,tmps); |
563 | else |
564 | deb("%d.%s = '%s'\n",anum,tmps,str_peek(st[sp])); |
565 | } |
566 | #endif |
567 | if (anum < 8) |
568 | arglast[anum] = sp; |
569 | } |
570 | |
571 | if (ppaddr[optype]) { |
572 | int status; |
573 | |
574 | /* pretend like we've been maintaining stack_* all along */ |
575 | stack_ary = stack->ary_array; |
576 | stack_sp = stack_ary + sp; |
577 | if (mark[optype] && stack_mark != arglast[0]) |
578 | warn("Inconsistent stack mark %d != %d", stack_mark, arglast[0]); |
579 | stack_max = stack_ary + stack->ary_max; |
580 | |
581 | status = (*ppaddr[optype])(str, arg, gimme); |
582 | |
583 | if (savestack->ary_fill > mymarkbase) { |
584 | warn("Inconsistent stack base"); |
585 | restorelist(mymarkbase); |
586 | } |
587 | sp = stack_sp - stack_ary; |
588 | if (sp < arglast[0]) |
589 | warn("TOO MANY POPS"); |
590 | st += arglast[0]; |
591 | goto array_return; |
592 | } |
593 | |
594 | st += arglast[0]; |
595 | |
596 | #ifdef SMALLSWITCHES |
597 | if (optype < O_CHOWN) |
598 | #endif |
599 | switch (optype) { |
600 | case O_RCAT: |
601 | STABSET(str); |
602 | break; |
603 | case O_ITEM: |
604 | if (gimme == G_ARRAY) |
605 | goto array_return; |
606 | /* FALL THROUGH */ |
607 | case O_SCALAR: |
608 | STR_SSET(str,st[1]); |
609 | STABSET(str); |
610 | break; |
611 | case O_ITEM2: |
612 | if (gimme == G_ARRAY) |
613 | goto array_return; |
614 | --anum; |
615 | STR_SSET(str,st[arglast[anum]-arglast[0]]); |
616 | STABSET(str); |
617 | break; |
618 | case O_ITEM3: |
619 | if (gimme == G_ARRAY) |
620 | goto array_return; |
621 | --anum; |
622 | STR_SSET(str,st[arglast[anum]-arglast[0]]); |
623 | STABSET(str); |
624 | break; |
625 | case O_CONCAT: |
626 | STR_SSET(str,st[1]); |
627 | str_scat(str,st[2]); |
628 | STABSET(str); |
629 | break; |
630 | case O_REPEAT: |
631 | if (gimme == G_ARRAY && arg[1].arg_flags & AF_ARYOK) { |
632 | sp = do_repeatary(arglast); |
633 | goto array_return; |
634 | } |
635 | STR_SSET(str,st[1]); |
636 | anum = (int)str_gnum(st[2]); |
637 | if (anum >= 1) { |
638 | tmpstr = Str_new(50, 0); |
639 | tmps = str_get(str); |
640 | str_nset(tmpstr,tmps,str->str_cur); |
641 | tmps = str_get(tmpstr); /* force to be string */ |
642 | STR_GROW(str, (anum * str->str_cur) + 1); |
643 | repeatcpy(str->str_ptr, tmps, tmpstr->str_cur, anum); |
644 | str->str_cur *= anum; |
645 | str->str_ptr[str->str_cur] = '\0'; |
646 | str->str_nok = 0; |
647 | str_free(tmpstr); |
648 | } |
649 | else { |
650 | if (dowarn && st[2]->str_pok && !looks_like_number(st[2])) |
651 | warn("Right operand of x is not numeric"); |
652 | str_sset(str,&str_no); |
653 | } |
654 | STABSET(str); |
655 | break; |
656 | case O_MATCH: |
657 | sp = do_match(str,arg, |
658 | gimme,arglast); |
659 | if (gimme == G_ARRAY) |
660 | goto array_return; |
661 | STABSET(str); |
662 | break; |
663 | case O_NMATCH: |
664 | sp = do_match(str,arg, |
665 | G_SCALAR,arglast); |
666 | str_sset(str, str_true(str) ? &str_no : &str_yes); |
667 | STABSET(str); |
668 | break; |
669 | case O_SUBST: |
670 | sp = do_subst(str,arg,arglast[0]); |
671 | goto array_return; |
672 | case O_NSUBST: |
673 | sp = do_subst(str,arg,arglast[0]); |
674 | str = arg->arg_ptr.arg_str; |
675 | str_set(str, str_true(str) ? No : Yes); |
676 | goto array_return; |
677 | case O_ASSIGN: |
678 | if (arg[1].arg_flags & AF_ARYOK) { |
679 | if (arg->arg_len == 1) { |
680 | arg->arg_type = O_LOCAL; |
681 | goto local; |
682 | } |
683 | else { |
684 | arg->arg_type = O_AASSIGN; |
685 | goto aassign; |
686 | } |
687 | } |
688 | else { |
689 | arg->arg_type = O_SASSIGN; |
690 | goto sassign; |
691 | } |
692 | case O_LOCAL: |
693 | local: |
694 | arglast[2] = arglast[1]; /* push a null array */ |
695 | /* FALL THROUGH */ |
696 | case O_AASSIGN: |
697 | aassign: |
698 | sp = do_assign(arg, |
699 | gimme,arglast); |
700 | goto array_return; |
701 | case O_SASSIGN: |
702 | sassign: |
703 | #ifdef TAINT |
704 | if (tainted && !st[2]->str_tainted) |
705 | tainted = 0; |
706 | #endif |
707 | STR_SSET(str, st[2]); |
708 | STABSET(str); |
709 | break; |
710 | case O_CHOP: |
711 | st -= arglast[0]; |
712 | str = arg->arg_ptr.arg_str; |
713 | for (sp = arglast[0] + 1; sp <= arglast[1]; sp++) |
714 | do_chop(str,st[sp]); |
715 | st += arglast[0]; |
716 | break; |
717 | case O_DEFINED: |
718 | if (arg[1].arg_type & A_DONT) { |
719 | sp = do_defined(str,arg, |
720 | gimme,arglast); |
721 | goto array_return; |
722 | } |
723 | else if (str->str_pok || str->str_nok) |
724 | goto say_yes; |
725 | goto say_no; |
726 | case O_UNDEF: |
727 | if (arg[1].arg_type & A_DONT) { |
728 | sp = do_undef(str,arg, |
729 | gimme,arglast); |
730 | goto array_return; |
731 | } |
732 | else if (str != stab_val(defstab)) { |
733 | if (str->str_len) { |
734 | if (str->str_state == SS_INCR) |
735 | Str_Grow(str,0); |
736 | Safefree(str->str_ptr); |
737 | str->str_ptr = Nullch; |
738 | str->str_len = 0; |
739 | } |
740 | str->str_pok = str->str_nok = 0; |
741 | STABSET(str); |
742 | } |
743 | goto say_undef; |
744 | case O_STUDY: |
745 | sp = do_study(str,arg, |
746 | gimme,arglast); |
747 | goto array_return; |
748 | case O_POW: |
749 | value = str_gnum(st[1]); |
750 | value = pow(value,str_gnum(st[2])); |
751 | goto donumset; |
752 | case O_MULTIPLY: |
753 | value = str_gnum(st[1]); |
754 | value *= str_gnum(st[2]); |
755 | goto donumset; |
756 | case O_DIVIDE: |
757 | if ((value = str_gnum(st[2])) == 0.0) |
758 | fatal("Illegal division by zero"); |
759 | #ifdef SLOPPYDIVIDE |
760 | /* insure that 20./5. == 4. */ |
761 | { |
762 | double x; |
763 | int k; |
764 | x = str_gnum(st[1]); |
765 | if ((double)(int)x == x && |
766 | (double)(int)value == value && |
767 | (k = (int)x/(int)value)*(int)value == (int)x) { |
768 | value = k; |
769 | } else { |
770 | value = x/value; |
771 | } |
772 | } |
773 | #else |
774 | value = str_gnum(st[1]) / value; |
775 | #endif |
776 | goto donumset; |
777 | case O_MODULO: |
778 | tmpulong = (unsigned long) str_gnum(st[2]); |
779 | if (tmpulong == 0L) |
780 | fatal("Illegal modulus zero"); |
781 | #ifndef lint |
782 | value = str_gnum(st[1]); |
783 | if (value >= 0.0) |
784 | value = (double)(((unsigned long)value) % tmpulong); |
785 | else { |
786 | tmplong = (long)value; |
787 | value = (double)(tmpulong - ((-tmplong - 1) % tmpulong)) - 1; |
788 | } |
789 | #endif |
790 | goto donumset; |
791 | case O_ADD: |
792 | value = str_gnum(st[1]); |
793 | value += str_gnum(st[2]); |
794 | goto donumset; |
795 | case O_SUBTRACT: |
796 | value = str_gnum(st[1]); |
797 | value -= str_gnum(st[2]); |
798 | goto donumset; |
799 | case O_LEFT_SHIFT: |
800 | value = str_gnum(st[1]); |
801 | anum = (int)str_gnum(st[2]); |
802 | #ifndef lint |
803 | value = (double)(U_L(value) << anum); |
804 | #endif |
805 | goto donumset; |
806 | case O_RIGHT_SHIFT: |
807 | value = str_gnum(st[1]); |
808 | anum = (int)str_gnum(st[2]); |
809 | #ifndef lint |
810 | value = (double)(U_L(value) >> anum); |
811 | #endif |
812 | goto donumset; |
813 | case O_LT: |
814 | value = str_gnum(st[1]); |
815 | value = (value < str_gnum(st[2])) ? 1.0 : 0.0; |
816 | goto donumset; |
817 | case O_GT: |
818 | value = str_gnum(st[1]); |
819 | value = (value > str_gnum(st[2])) ? 1.0 : 0.0; |
820 | goto donumset; |
821 | case O_LE: |
822 | value = str_gnum(st[1]); |
823 | value = (value <= str_gnum(st[2])) ? 1.0 : 0.0; |
824 | goto donumset; |
825 | case O_GE: |
826 | value = str_gnum(st[1]); |
827 | value = (value >= str_gnum(st[2])) ? 1.0 : 0.0; |
828 | goto donumset; |
829 | case O_EQ: |
830 | if (dowarn) { |
831 | if ((!st[1]->str_nok && !looks_like_number(st[1])) || |
832 | (!st[2]->str_nok && !looks_like_number(st[2])) ) |
833 | warn("Possible use of == on string value"); |
834 | } |
835 | value = str_gnum(st[1]); |
836 | value = (value == str_gnum(st[2])) ? 1.0 : 0.0; |
837 | goto donumset; |
838 | case O_NE: |
839 | value = str_gnum(st[1]); |
840 | value = (value != str_gnum(st[2])) ? 1.0 : 0.0; |
841 | goto donumset; |
842 | case O_NCMP: |
843 | value = str_gnum(st[1]); |
844 | value -= str_gnum(st[2]); |
845 | if (value > 0.0) |
846 | value = 1.0; |
847 | else if (value < 0.0) |
848 | value = -1.0; |
849 | goto donumset; |
850 | case O_BIT_AND: |
851 | if (!sawvec || st[1]->str_nok || st[2]->str_nok) { |
852 | value = str_gnum(st[1]); |
853 | #ifndef lint |
854 | value = (double)(U_L(value) & U_L(str_gnum(st[2]))); |
855 | #endif |
856 | goto donumset; |
857 | } |
858 | else |
859 | do_vop(optype,str,st[1],st[2]); |
860 | break; |
861 | case O_XOR: |
862 | if (!sawvec || st[1]->str_nok || st[2]->str_nok) { |
863 | value = str_gnum(st[1]); |
864 | #ifndef lint |
865 | value = (double)(U_L(value) ^ U_L(str_gnum(st[2]))); |
866 | #endif |
867 | goto donumset; |
868 | } |
869 | else |
870 | do_vop(optype,str,st[1],st[2]); |
871 | break; |
872 | case O_BIT_OR: |
873 | if (!sawvec || st[1]->str_nok || st[2]->str_nok) { |
874 | value = str_gnum(st[1]); |
875 | #ifndef lint |
876 | value = (double)(U_L(value) | U_L(str_gnum(st[2]))); |
877 | #endif |
878 | goto donumset; |
879 | } |
880 | else |
881 | do_vop(optype,str,st[1],st[2]); |
882 | break; |
883 | /* use register in evaluating str_true() */ |
884 | case O_AND: |
885 | if (str_true(st[1])) { |
886 | anum = 2; |
887 | optype = O_ITEM2; |
888 | argflags = arg[anum].arg_flags; |
889 | if (gimme == G_ARRAY) |
890 | argflags |= AF_ARYOK; |
891 | argtype = arg[anum].arg_type & A_MASK; |
892 | argptr = arg[anum].arg_ptr; |
893 | maxarg = anum = 1; |
894 | sp = arglast[0]; |
895 | st -= sp; |
896 | goto re_eval; |
897 | } |
898 | else { |
899 | if (assigning) { |
900 | str_sset(str, st[1]); |
901 | STABSET(str); |
902 | } |
903 | else |
904 | str = st[1]; |
905 | break; |
906 | } |
907 | case O_OR: |
908 | if (str_true(st[1])) { |
909 | if (assigning) { |
910 | str_sset(str, st[1]); |
911 | STABSET(str); |
912 | } |
913 | else |
914 | str = st[1]; |
915 | break; |
916 | } |
917 | else { |
918 | anum = 2; |
919 | optype = O_ITEM2; |
920 | argflags = arg[anum].arg_flags; |
921 | if (gimme == G_ARRAY) |
922 | argflags |= AF_ARYOK; |
923 | argtype = arg[anum].arg_type & A_MASK; |
924 | argptr = arg[anum].arg_ptr; |
925 | maxarg = anum = 1; |
926 | sp = arglast[0]; |
927 | st -= sp; |
928 | goto re_eval; |
929 | } |
930 | case O_COND_EXPR: |
931 | anum = (str_true(st[1]) ? 2 : 3); |
932 | optype = (anum == 2 ? O_ITEM2 : O_ITEM3); |
933 | argflags = arg[anum].arg_flags; |
934 | if (gimme == G_ARRAY) |
935 | argflags |= AF_ARYOK; |
936 | argtype = arg[anum].arg_type & A_MASK; |
937 | argptr = arg[anum].arg_ptr; |
938 | maxarg = anum = 1; |
939 | sp = arglast[0]; |
940 | st -= sp; |
941 | goto re_eval; |
942 | case O_COMMA: |
943 | if (gimme == G_ARRAY) |
944 | goto array_return; |
945 | str = st[2]; |
946 | break; |
947 | case O_NEGATE: |
948 | value = -str_gnum(st[1]); |
949 | goto donumset; |
950 | case O_NOT: |
951 | #ifdef NOTNOT |
952 | { char xxx = str_true(st[1]); value = (double) !xxx; } |
953 | #else |
954 | value = (double) !str_true(st[1]); |
955 | #endif |
956 | goto donumset; |
957 | case O_COMPLEMENT: |
958 | if (!sawvec || st[1]->str_nok) { |
959 | #ifndef lint |
960 | value = (double) ~U_L(str_gnum(st[1])); |
961 | #endif |
962 | goto donumset; |
963 | } |
964 | else { |
965 | STR_SSET(str,st[1]); |
966 | tmps = str_get(str); |
967 | for (anum = str->str_cur; anum; anum--, tmps++) |
968 | *tmps = ~*tmps; |
969 | } |
970 | break; |
971 | case O_SELECT: |
972 | stab_efullname(str,defoutstab); |
973 | if (maxarg > 0) { |
974 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
975 | defoutstab = arg[1].arg_ptr.arg_stab; |
976 | else |
977 | defoutstab = stabent(str_get(st[1]),TRUE); |
978 | if (!stab_io(defoutstab)) |
979 | stab_io(defoutstab) = stio_new(); |
980 | curoutstab = defoutstab; |
981 | } |
982 | STABSET(str); |
983 | break; |
984 | case O_WRITE: |
985 | if (maxarg == 0) |
986 | stab = defoutstab; |
987 | else if ((arg[1].arg_type & A_MASK) == A_WORD) { |
988 | if (!(stab = arg[1].arg_ptr.arg_stab)) |
989 | stab = defoutstab; |
990 | } |
991 | else |
992 | stab = stabent(str_get(st[1]),TRUE); |
993 | if (!stab_io(stab)) { |
994 | str_set(str, No); |
995 | STABSET(str); |
996 | break; |
997 | } |
998 | curoutstab = stab; |
999 | fp = stab_io(stab)->ofp; |
1000 | if (stab_io(stab)->fmt_stab) |
1001 | form = stab_form(stab_io(stab)->fmt_stab); |
1002 | else |
1003 | form = stab_form(stab); |
1004 | if (!form || !fp) { |
1005 | if (dowarn) { |
1006 | if (form) |
1007 | warn("No format for filehandle"); |
1008 | else { |
1009 | if (stab_io(stab)->ifp) |
1010 | warn("Filehandle only opened for input"); |
1011 | else |
1012 | warn("Write on closed filehandle"); |
1013 | } |
1014 | } |
1015 | str_set(str, No); |
1016 | STABSET(str); |
1017 | break; |
1018 | } |
1019 | format(&outrec,form,sp); |
1020 | do_write(&outrec,stab,sp); |
1021 | if (stab_io(stab)->flags & IOF_FLUSH) |
1022 | (void)fflush(fp); |
1023 | str_set(str, Yes); |
1024 | STABSET(str); |
1025 | break; |
1026 | case O_DBMOPEN: |
1027 | #ifdef SOME_DBM |
1028 | anum = arg[1].arg_type & A_MASK; |
1029 | if (anum == A_WORD || anum == A_STAB) |
1030 | stab = arg[1].arg_ptr.arg_stab; |
1031 | else |
1032 | stab = stabent(str_get(st[1]),TRUE); |
1033 | if (st[3]->str_nok || st[3]->str_pok) |
1034 | anum = (int)str_gnum(st[3]); |
1035 | else |
1036 | anum = -1; |
1037 | value = (double)hdbmopen(stab_hash(stab),str_get(st[2]),anum); |
1038 | goto donumset; |
1039 | #else |
1040 | fatal("No dbm or ndbm on this machine"); |
1041 | #endif |
1042 | case O_DBMCLOSE: |
1043 | #ifdef SOME_DBM |
1044 | anum = arg[1].arg_type & A_MASK; |
1045 | if (anum == A_WORD || anum == A_STAB) |
1046 | stab = arg[1].arg_ptr.arg_stab; |
1047 | else |
1048 | stab = stabent(str_get(st[1]),TRUE); |
1049 | hdbmclose(stab_hash(stab)); |
1050 | goto say_yes; |
1051 | #else |
1052 | fatal("No dbm or ndbm on this machine"); |
1053 | #endif |
1054 | case O_OPEN: |
1055 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
1056 | stab = arg[1].arg_ptr.arg_stab; |
1057 | else |
1058 | stab = stabent(str_get(st[1]),TRUE); |
1059 | tmps = str_get(st[2]); |
1060 | if (do_open(stab,tmps,st[2]->str_cur)) { |
1061 | value = (double)forkprocess; |
1062 | stab_io(stab)->lines = 0; |
1063 | goto donumset; |
1064 | } |
1065 | else if (forkprocess == 0) /* we are a new child */ |
1066 | goto say_zero; |
1067 | else |
1068 | goto say_undef; |
1069 | /* break; */ |
1070 | case O_TRANS: |
1071 | value = (double) do_trans(str,arg); |
1072 | str = arg->arg_ptr.arg_str; |
1073 | goto donumset; |
1074 | case O_NTRANS: |
1075 | str_set(arg->arg_ptr.arg_str, do_trans(str,arg) == 0 ? Yes : No); |
1076 | str = arg->arg_ptr.arg_str; |
1077 | break; |
1078 | case O_CLOSE: |
1079 | if (maxarg == 0) |
1080 | stab = defoutstab; |
1081 | else if ((arg[1].arg_type & A_MASK) == A_WORD) |
1082 | stab = arg[1].arg_ptr.arg_stab; |
1083 | else |
1084 | stab = stabent(str_get(st[1]),TRUE); |
1085 | str_set(str, do_close(stab,TRUE) ? Yes : No ); |
1086 | STABSET(str); |
1087 | break; |
1088 | case O_EACH: |
1089 | sp = do_each(str,stab_hash(arg[1].arg_ptr.arg_stab), |
1090 | gimme,arglast); |
1091 | goto array_return; |
1092 | case O_VALUES: |
1093 | case O_KEYS: |
1094 | sp = do_kv(str,stab_hash(arg[1].arg_ptr.arg_stab), optype, |
1095 | gimme,arglast); |
1096 | goto array_return; |
1097 | case O_LARRAY: |
1098 | str->str_nok = str->str_pok = 0; |
1099 | str->str_u.str_stab = arg[1].arg_ptr.arg_stab; |
1100 | str->str_state = SS_ARY; |
1101 | break; |
1102 | case O_ARRAY: |
1103 | ary = stab_array(arg[1].arg_ptr.arg_stab); |
1104 | maxarg = ary->ary_fill + 1; |
1105 | if (gimme == G_ARRAY) { /* array wanted */ |
1106 | sp = arglast[0]; |
1107 | st -= sp; |
1108 | if (maxarg > 0 && sp + maxarg > stack->ary_max) { |
1109 | astore(stack,sp + maxarg, Nullstr); |
1110 | st = stack->ary_array; |
1111 | } |
1112 | st += sp; |
1113 | Copy(ary->ary_array, &st[1], maxarg, STR*); |
1114 | sp += maxarg; |
1115 | goto array_return; |
1116 | } |
1117 | else { |
1118 | value = (double)maxarg; |
1119 | goto donumset; |
1120 | } |
1121 | case O_AELEM: |
1122 | anum = ((int)str_gnum(st[2])) - arybase; |
1123 | str = afetch(stab_array(arg[1].arg_ptr.arg_stab),anum,FALSE); |
1124 | break; |
1125 | case O_DELETE: |
1126 | tmpstab = arg[1].arg_ptr.arg_stab; |
1127 | tmps = str_get(st[2]); |
1128 | str = hdelete(stab_hash(tmpstab),tmps,st[2]->str_cur); |
1129 | if (tmpstab == envstab) |
1130 | my_setenv(tmps,Nullch); |
1131 | if (!str) |
1132 | goto say_undef; |
1133 | break; |
1134 | case O_LHASH: |
1135 | str->str_nok = str->str_pok = 0; |
1136 | str->str_u.str_stab = arg[1].arg_ptr.arg_stab; |
1137 | str->str_state = SS_HASH; |
1138 | break; |
1139 | case O_HASH: |
1140 | if (gimme == G_ARRAY) { /* array wanted */ |
1141 | sp = do_kv(str,stab_hash(arg[1].arg_ptr.arg_stab), optype, |
1142 | gimme,arglast); |
1143 | goto array_return; |
1144 | } |
1145 | else { |
1146 | tmpstab = arg[1].arg_ptr.arg_stab; |
1147 | if (!stab_hash(tmpstab)->tbl_fill) |
1148 | goto say_zero; |
1149 | sprintf(buf,"%d/%d",stab_hash(tmpstab)->tbl_fill, |
1150 | stab_hash(tmpstab)->tbl_max+1); |
1151 | str_set(str,buf); |
1152 | } |
1153 | break; |
1154 | case O_HELEM: |
1155 | tmpstab = arg[1].arg_ptr.arg_stab; |
1156 | tmps = str_get(st[2]); |
1157 | str = hfetch(stab_hash(tmpstab),tmps,st[2]->str_cur,FALSE); |
1158 | break; |
1159 | case O_LAELEM: |
1160 | anum = ((int)str_gnum(st[2])) - arybase; |
1161 | str = afetch(stab_array(arg[1].arg_ptr.arg_stab),anum,TRUE); |
1162 | if (!str || str == &str_undef) |
1163 | fatal("Assignment to non-creatable value, subscript %d",anum); |
1164 | break; |
1165 | case O_LHELEM: |
1166 | tmpstab = arg[1].arg_ptr.arg_stab; |
1167 | tmps = str_get(st[2]); |
1168 | anum = st[2]->str_cur; |
1169 | str = hfetch(stab_hash(tmpstab),tmps,anum,TRUE); |
1170 | if (!str || str == &str_undef) |
1171 | fatal("Assignment to non-creatable value, subscript \"%s\"",tmps); |
1172 | if (tmpstab == envstab) /* heavy wizardry going on here */ |
1173 | str_magic(str, tmpstab, 'E', tmps, anum); /* str is now magic */ |
1174 | /* he threw the brick up into the air */ |
1175 | else if (tmpstab == sigstab) |
1176 | str_magic(str, tmpstab, 'S', tmps, anum); |
1177 | #ifdef SOME_DBM |
1178 | else if (stab_hash(tmpstab)->tbl_dbm) |
1179 | str_magic(str, tmpstab, 'D', tmps, anum); |
1180 | #endif |
1181 | else if (tmpstab == DBline) |
1182 | str_magic(str, tmpstab, 'L', tmps, anum); |
1183 | break; |
1184 | case O_LSLICE: |
1185 | anum = 2; |
1186 | argtype = FALSE; |
1187 | goto do_slice_already; |
1188 | case O_ASLICE: |
1189 | anum = 1; |
1190 | argtype = FALSE; |
1191 | goto do_slice_already; |
1192 | case O_HSLICE: |
1193 | anum = 0; |
1194 | argtype = FALSE; |
1195 | goto do_slice_already; |
1196 | case O_LASLICE: |
1197 | anum = 1; |
1198 | argtype = TRUE; |
1199 | goto do_slice_already; |
1200 | case O_LHSLICE: |
1201 | anum = 0; |
1202 | argtype = TRUE; |
1203 | do_slice_already: |
1204 | sp = do_slice(arg[1].arg_ptr.arg_stab,str,anum,argtype, |
1205 | gimme,arglast); |
1206 | goto array_return; |
1207 | case O_SPLICE: |
1208 | sp = do_splice(stab_array(arg[1].arg_ptr.arg_stab),gimme,arglast); |
1209 | goto array_return; |
1210 | case O_PUSH: |
1211 | if (arglast[2] - arglast[1] != 1) |
1212 | str = do_push(stab_array(arg[1].arg_ptr.arg_stab),arglast); |
1213 | else { |
1214 | str = Str_new(51,0); /* must copy the STR */ |
1215 | str_sset(str,st[2]); |
1216 | (void)apush(stab_array(arg[1].arg_ptr.arg_stab),str); |
1217 | } |
1218 | break; |
1219 | case O_POP: |
1220 | str = apop(ary = stab_array(arg[1].arg_ptr.arg_stab)); |
1221 | goto staticalization; |
1222 | case O_SHIFT: |
1223 | str = ashift(ary = stab_array(arg[1].arg_ptr.arg_stab)); |
1224 | staticalization: |
1225 | if (!str) |
1226 | goto say_undef; |
1227 | if (ary->ary_flags & ARF_REAL) |
1228 | (void)str_2mortal(str); |
1229 | break; |
1230 | case O_UNPACK: |
1231 | sp = do_unpack(str,gimme,arglast); |
1232 | goto array_return; |
1233 | case O_SPLIT: |
1234 | value = str_gnum(st[3]); |
1235 | sp = do_split(str, arg[2].arg_ptr.arg_spat, (int)value, |
1236 | gimme,arglast); |
1237 | goto array_return; |
1238 | case O_LENGTH: |
1239 | if (maxarg < 1) |
1240 | value = (double)str_len(stab_val(defstab)); |
1241 | else |
1242 | value = (double)str_len(st[1]); |
1243 | goto donumset; |
1244 | case O_SPRINTF: |
1245 | do_sprintf(str, sp-arglast[0], st+1); |
1246 | break; |
1247 | case O_SUBSTR: |
1248 | anum = ((int)str_gnum(st[2])) - arybase; /* anum=where to start*/ |
1249 | tmps = str_get(st[1]); /* force conversion to string */ |
1250 | /*SUPPRESS 560*/ |
1251 | if (argtype = (str == st[1])) |
1252 | str = arg->arg_ptr.arg_str; |
1253 | if (anum < 0) |
1254 | anum += st[1]->str_cur + arybase; |
1255 | if (anum < 0 || anum > st[1]->str_cur) |
1256 | str_nset(str,"",0); |
1257 | else { |
1258 | optype = maxarg < 3 ? st[1]->str_cur : (int)str_gnum(st[3]); |
1259 | if (optype < 0) |
1260 | optype = 0; |
1261 | tmps += anum; |
1262 | anum = st[1]->str_cur - anum; /* anum=how many bytes left*/ |
1263 | if (anum > optype) |
1264 | anum = optype; |
1265 | str_nset(str, tmps, anum); |
1266 | if (argtype) { /* it's an lvalue! */ |
1267 | Lstring *lstr = (Lstring*)str; |
1268 | |
1269 | str->str_magic = st[1]; |
1270 | st[1]->str_rare = 's'; |
1271 | lstr->lstr_offset = tmps - str_get(st[1]); |
1272 | lstr->lstr_len = anum; |
1273 | } |
1274 | } |
1275 | break; |
1276 | case O_PACK: |
1277 | /*SUPPRESS 701*/ |
1278 | (void)do_pack(str,arglast); |
1279 | break; |
1280 | case O_GREP: |
1281 | sp = do_grep(arg,str,gimme,arglast); |
1282 | goto array_return; |
1283 | case O_JOIN: |
1284 | do_join(str,arglast); |
1285 | break; |
1286 | case O_SLT: |
1287 | tmps = str_get(st[1]); |
1288 | value = (double) (str_cmp(st[1],st[2]) < 0); |
1289 | goto donumset; |
1290 | case O_SGT: |
1291 | tmps = str_get(st[1]); |
1292 | value = (double) (str_cmp(st[1],st[2]) > 0); |
1293 | goto donumset; |
1294 | case O_SLE: |
1295 | tmps = str_get(st[1]); |
1296 | value = (double) (str_cmp(st[1],st[2]) <= 0); |
1297 | goto donumset; |
1298 | case O_SGE: |
1299 | tmps = str_get(st[1]); |
1300 | value = (double) (str_cmp(st[1],st[2]) >= 0); |
1301 | goto donumset; |
1302 | case O_SEQ: |
1303 | tmps = str_get(st[1]); |
1304 | value = (double) str_eq(st[1],st[2]); |
1305 | goto donumset; |
1306 | case O_SNE: |
1307 | tmps = str_get(st[1]); |
1308 | value = (double) !str_eq(st[1],st[2]); |
1309 | goto donumset; |
1310 | case O_SCMP: |
1311 | tmps = str_get(st[1]); |
1312 | value = (double) str_cmp(st[1],st[2]); |
1313 | goto donumset; |
1314 | case O_SUBR: |
1315 | sp = do_subr(arg,gimme,arglast); |
1316 | st = stack->ary_array + arglast[0]; /* maybe realloced */ |
1317 | goto array_return; |
1318 | case O_DBSUBR: |
1319 | sp = do_subr(arg,gimme,arglast); |
1320 | st = stack->ary_array + arglast[0]; /* maybe realloced */ |
1321 | goto array_return; |
1322 | case O_CALLER: |
1323 | sp = do_caller(arg,maxarg,gimme,arglast); |
1324 | st = stack->ary_array + arglast[0]; /* maybe realloced */ |
1325 | goto array_return; |
1326 | case O_SORT: |
1327 | sp = do_sort(str,arg, |
1328 | gimme,arglast); |
1329 | goto array_return; |
1330 | case O_REVERSE: |
1331 | if (gimme == G_ARRAY) |
1332 | sp = do_reverse(arglast); |
1333 | else |
1334 | sp = do_sreverse(str, arglast); |
1335 | goto array_return; |
1336 | case O_WARN: |
1337 | if (arglast[2] - arglast[1] != 1) { |
1338 | do_join(str,arglast); |
1339 | tmps = str_get(str); |
1340 | } |
1341 | else { |
1342 | str = st[2]; |
1343 | tmps = str_get(st[2]); |
1344 | } |
1345 | if (!tmps || !*tmps) |
1346 | tmps = "Warning: something's wrong"; |
1347 | warn("%s",tmps); |
1348 | goto say_yes; |
1349 | case O_DIE: |
1350 | if (arglast[2] - arglast[1] != 1) { |
1351 | do_join(str,arglast); |
1352 | tmps = str_get(str); |
1353 | } |
1354 | else { |
1355 | str = st[2]; |
1356 | tmps = str_get(st[2]); |
1357 | } |
1358 | if (!tmps || !*tmps) |
1359 | tmps = "Died"; |
1360 | fatal("%s",tmps); |
1361 | goto say_zero; |
1362 | case O_PRTF: |
1363 | case O_PRINT: |
1364 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
1365 | stab = arg[1].arg_ptr.arg_stab; |
1366 | else |
1367 | stab = stabent(str_get(st[1]),TRUE); |
1368 | if (!stab) |
1369 | stab = defoutstab; |
1370 | if (!stab_io(stab)) { |
1371 | if (dowarn) |
1372 | warn("Filehandle never opened"); |
1373 | goto say_zero; |
1374 | } |
1375 | if (!(fp = stab_io(stab)->ofp)) { |
1376 | if (dowarn) { |
1377 | if (stab_io(stab)->ifp) |
1378 | warn("Filehandle opened only for input"); |
1379 | else |
1380 | warn("Print on closed filehandle"); |
1381 | } |
1382 | goto say_zero; |
1383 | } |
1384 | else { |
1385 | if (optype == O_PRTF || arglast[2] - arglast[1] != 1) |
1386 | value = (double)do_aprint(arg,fp,arglast); |
1387 | else { |
1388 | value = (double)do_print(st[2],fp); |
1389 | if (orslen && optype == O_PRINT) |
1390 | if (fwrite(ors, 1, orslen, fp) == 0) |
1391 | goto say_zero; |
1392 | } |
1393 | if (stab_io(stab)->flags & IOF_FLUSH) |
1394 | if (fflush(fp) == EOF) |
1395 | goto say_zero; |
1396 | } |
1397 | goto donumset; |
1398 | case O_CHDIR: |
1399 | if (maxarg < 1) |
1400 | tmps = Nullch; |
1401 | else |
1402 | tmps = str_get(st[1]); |
1403 | if (!tmps || !*tmps) { |
1404 | tmpstr = hfetch(stab_hash(envstab),"HOME",4,FALSE); |
1405 | tmps = str_get(tmpstr); |
1406 | } |
1407 | if (!tmps || !*tmps) { |
1408 | tmpstr = hfetch(stab_hash(envstab),"LOGDIR",6,FALSE); |
1409 | tmps = str_get(tmpstr); |
1410 | } |
1411 | #ifdef TAINT |
1412 | TAINT_PROPER("chdir"); |
1413 | #endif |
1414 | value = (double)(chdir(tmps) >= 0); |
1415 | goto donumset; |
1416 | case O_EXIT: |
1417 | if (maxarg < 1) |
1418 | anum = 0; |
1419 | else |
1420 | anum = (int)str_gnum(st[1]); |
1421 | my_exit(anum); |
1422 | goto say_zero; |
1423 | case O_RESET: |
1424 | if (maxarg < 1) |
1425 | tmps = ""; |
1426 | else |
1427 | tmps = str_get(st[1]); |
1428 | str_reset(tmps,curcmd->c_stash); |
1429 | value = 1.0; |
1430 | goto donumset; |
1431 | case O_LIST: |
1432 | if (gimme == G_ARRAY) |
1433 | goto array_return; |
1434 | if (maxarg > 0) |
1435 | str = st[sp - arglast[0]]; /* unwanted list, return last item */ |
1436 | else |
1437 | str = &str_undef; |
1438 | break; |
1439 | case O_EOF: |
1440 | if (maxarg <= 0) |
1441 | stab = last_in_stab; |
1442 | else if ((arg[1].arg_type & A_MASK) == A_WORD) |
1443 | stab = arg[1].arg_ptr.arg_stab; |
1444 | else |
1445 | stab = stabent(str_get(st[1]),TRUE); |
1446 | str_set(str, do_eof(stab) ? Yes : No); |
1447 | STABSET(str); |
1448 | break; |
1449 | case O_GETC: |
1450 | if (maxarg <= 0) |
1451 | stab = stdinstab; |
1452 | else if ((arg[1].arg_type & A_MASK) == A_WORD) |
1453 | stab = arg[1].arg_ptr.arg_stab; |
1454 | else |
1455 | stab = stabent(str_get(st[1]),TRUE); |
1456 | if (!stab) |
1457 | stab = argvstab; |
1458 | if (!stab || do_eof(stab)) /* make sure we have fp with something */ |
1459 | goto say_undef; |
1460 | else { |
1461 | #ifdef TAINT |
1462 | tainted = 1; |
1463 | #endif |
1464 | str_set(str," "); |
1465 | *str->str_ptr = getc(stab_io(stab)->ifp); /* should never be EOF */ |
1466 | } |
1467 | STABSET(str); |
1468 | break; |
1469 | case O_TELL: |
1470 | if (maxarg <= 0) |
1471 | stab = last_in_stab; |
1472 | else if ((arg[1].arg_type & A_MASK) == A_WORD) |
1473 | stab = arg[1].arg_ptr.arg_stab; |
1474 | else |
1475 | stab = stabent(str_get(st[1]),TRUE); |
1476 | #ifndef lint |
1477 | value = (double)do_tell(stab); |
1478 | #else |
1479 | (void)do_tell(stab); |
1480 | #endif |
1481 | goto donumset; |
1482 | case O_RECV: |
1483 | case O_READ: |
1484 | case O_SYSREAD: |
1485 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
1486 | stab = arg[1].arg_ptr.arg_stab; |
1487 | else |
1488 | stab = stabent(str_get(st[1]),TRUE); |
1489 | tmps = str_get(st[2]); |
1490 | anum = (int)str_gnum(st[3]); |
1491 | errno = 0; |
1492 | maxarg = sp - arglast[0]; |
1493 | if (maxarg > 4) |
1494 | warn("Too many args on read"); |
1495 | if (maxarg == 4) |
1496 | maxarg = (int)str_gnum(st[4]); |
1497 | else |
1498 | maxarg = 0; |
1499 | if (!stab_io(stab) || !stab_io(stab)->ifp) |
1500 | goto say_undef; |
1501 | #ifdef HAS_SOCKET |
1502 | if (optype == O_RECV) { |
1503 | argtype = sizeof buf; |
1504 | STR_GROW(st[2], anum+1), (tmps = str_get(st[2])); /* sneaky */ |
1505 | anum = recvfrom(fileno(stab_io(stab)->ifp), tmps, anum, maxarg, |
1506 | buf, &argtype); |
1507 | if (anum >= 0) { |
1508 | st[2]->str_cur = anum; |
1509 | st[2]->str_ptr[anum] = '\0'; |
1510 | str_nset(str,buf,argtype); |
1511 | } |
1512 | else |
1513 | str_sset(str,&str_undef); |
1514 | break; |
1515 | } |
1516 | #else |
1517 | if (optype == O_RECV) |
1518 | goto badsock; |
1519 | #endif |
1520 | STR_GROW(st[2], anum+maxarg+1), (tmps = str_get(st[2])); /* sneaky */ |
1521 | if (optype == O_SYSREAD) { |
1522 | anum = read(fileno(stab_io(stab)->ifp), tmps+maxarg, anum); |
1523 | } |
1524 | else |
1525 | #ifdef HAS_SOCKET |
1526 | if (stab_io(stab)->type == 's') { |
1527 | argtype = sizeof buf; |
1528 | anum = recvfrom(fileno(stab_io(stab)->ifp), tmps+maxarg, anum, 0, |
1529 | buf, &argtype); |
1530 | } |
1531 | else |
1532 | #endif |
1533 | anum = fread(tmps+maxarg, 1, anum, stab_io(stab)->ifp); |
1534 | if (anum < 0) |
1535 | goto say_undef; |
1536 | st[2]->str_cur = anum+maxarg; |
1537 | st[2]->str_ptr[anum+maxarg] = '\0'; |
1538 | value = (double)anum; |
1539 | goto donumset; |
1540 | case O_SYSWRITE: |
1541 | case O_SEND: |
1542 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
1543 | stab = arg[1].arg_ptr.arg_stab; |
1544 | else |
1545 | stab = stabent(str_get(st[1]),TRUE); |
1546 | tmps = str_get(st[2]); |
1547 | anum = (int)str_gnum(st[3]); |
1548 | errno = 0; |
1549 | stio = stab_io(stab); |
1550 | maxarg = sp - arglast[0]; |
1551 | if (!stio || !stio->ifp) { |
1552 | anum = -1; |
1553 | if (dowarn) { |
1554 | if (optype == O_SYSWRITE) |
1555 | warn("Syswrite on closed filehandle"); |
1556 | else |
1557 | warn("Send on closed socket"); |
1558 | } |
1559 | } |
1560 | else if (optype == O_SYSWRITE) { |
1561 | if (maxarg > 4) |
1562 | warn("Too many args on syswrite"); |
1563 | if (maxarg == 4) |
1564 | optype = (int)str_gnum(st[4]); |
1565 | else |
1566 | optype = 0; |
1567 | anum = write(fileno(stab_io(stab)->ifp), tmps+optype, anum); |
1568 | } |
1569 | #ifdef HAS_SOCKET |
1570 | else if (maxarg >= 4) { |
1571 | if (maxarg > 4) |
1572 | warn("Too many args on send"); |
1573 | tmps2 = str_get(st[4]); |
1574 | anum = sendto(fileno(stab_io(stab)->ifp), tmps, st[2]->str_cur, |
1575 | anum, tmps2, st[4]->str_cur); |
1576 | } |
1577 | else |
1578 | anum = send(fileno(stab_io(stab)->ifp), tmps, st[2]->str_cur, anum); |
1579 | #else |
1580 | else |
1581 | goto badsock; |
1582 | #endif |
1583 | if (anum < 0) |
1584 | goto say_undef; |
1585 | value = (double)anum; |
1586 | goto donumset; |
1587 | case O_SEEK: |
1588 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
1589 | stab = arg[1].arg_ptr.arg_stab; |
1590 | else |
1591 | stab = stabent(str_get(st[1]),TRUE); |
1592 | value = str_gnum(st[2]); |
1593 | str_set(str, do_seek(stab, |
1594 | (long)value, (int)str_gnum(st[3]) ) ? Yes : No); |
1595 | STABSET(str); |
1596 | break; |
1597 | case O_RETURN: |
1598 | tmps = "_SUB_"; /* just fake up a "last _SUB_" */ |
1599 | optype = O_LAST; |
1600 | if (curcsv && curcsv->wantarray == G_ARRAY) { |
1601 | lastretstr = Nullstr; |
1602 | lastspbase = arglast[1]; |
1603 | lastsize = arglast[2] - arglast[1]; |
1604 | } |
1605 | else |
1606 | lastretstr = str_mortal(st[arglast[2] - arglast[0]]); |
1607 | goto dopop; |
1608 | case O_REDO: |
1609 | case O_NEXT: |
1610 | case O_LAST: |
1611 | tmps = Nullch; |
1612 | if (maxarg > 0) { |
1613 | tmps = str_get(arg[1].arg_ptr.arg_str); |
1614 | dopop: |
1615 | while (loop_ptr >= 0 && (!loop_stack[loop_ptr].loop_label || |
1616 | strNE(tmps,loop_stack[loop_ptr].loop_label) )) { |
1617 | #ifdef DEBUGGING |
1618 | if (debug & 4) { |
1619 | deb("(Skipping label #%d %s)\n",loop_ptr, |
1620 | loop_stack[loop_ptr].loop_label); |
1621 | } |
1622 | #endif |
1623 | loop_ptr--; |
1624 | } |
1625 | #ifdef DEBUGGING |
1626 | if (debug & 4) { |
1627 | deb("(Found label #%d %s)\n",loop_ptr, |
1628 | loop_stack[loop_ptr].loop_label); |
1629 | } |
1630 | #endif |
1631 | } |
1632 | if (loop_ptr < 0) { |
1633 | if (tmps && strEQ(tmps, "_SUB_")) |
1634 | fatal("Can't return outside a subroutine"); |
1635 | fatal("Bad label: %s", maxarg > 0 ? tmps : "<null>"); |
1636 | } |
1637 | if (!lastretstr && optype == O_LAST && lastsize) { |
1638 | st -= arglast[0]; |
1639 | st += lastspbase + 1; |
1640 | optype = loop_stack[loop_ptr].loop_sp - lastspbase; /* negative */ |
1641 | if (optype) { |
1642 | for (anum = lastsize; anum > 0; anum--,st++) |
1643 | st[optype] = str_mortal(st[0]); |
1644 | } |
1645 | longjmp(loop_stack[loop_ptr].loop_env, O_LAST); |
1646 | } |
1647 | longjmp(loop_stack[loop_ptr].loop_env, optype); |
1648 | case O_DUMP: |
1649 | case O_GOTO:/* shudder */ |
1650 | goto_targ = str_get(arg[1].arg_ptr.arg_str); |
1651 | if (!*goto_targ) |
1652 | goto_targ = Nullch; /* just restart from top */ |
1653 | if (optype == O_DUMP) { |
1654 | do_undump = TRUE; |
1655 | my_unexec(); |
1656 | } |
1657 | longjmp(top_env, 1); |
1658 | case O_INDEX: |
1659 | tmps = str_get(st[1]); |
1660 | if (maxarg < 3) |
1661 | anum = 0; |
1662 | else { |
1663 | anum = (int) str_gnum(st[3]) - arybase; |
1664 | if (anum < 0) |
1665 | anum = 0; |
1666 | else if (anum > st[1]->str_cur) |
1667 | anum = st[1]->str_cur; |
1668 | } |
1669 | #ifndef lint |
1670 | if (!(tmps2 = fbminstr((unsigned char*)tmps + anum, |
1671 | (unsigned char*)tmps + st[1]->str_cur, st[2]))) |
1672 | #else |
1673 | if (tmps2 = fbminstr(Null(unsigned char*),Null(unsigned char*),Nullstr)) |
1674 | #endif |
1675 | value = (double)(-1 + arybase); |
1676 | else |
1677 | value = (double)(tmps2 - tmps + arybase); |
1678 | goto donumset; |
1679 | case O_RINDEX: |
1680 | tmps = str_get(st[1]); |
1681 | tmps2 = str_get(st[2]); |
1682 | if (maxarg < 3) |
1683 | anum = st[1]->str_cur; |
1684 | else { |
1685 | anum = (int) str_gnum(st[3]) - arybase + st[2]->str_cur; |
1686 | if (anum < 0) |
1687 | anum = 0; |
1688 | else if (anum > st[1]->str_cur) |
1689 | anum = st[1]->str_cur; |
1690 | } |
1691 | #ifndef lint |
1692 | if (!(tmps2 = rninstr(tmps, tmps + anum, |
1693 | tmps2, tmps2 + st[2]->str_cur))) |
1694 | #else |
1695 | if (tmps2 = rninstr(Nullch,Nullch,Nullch,Nullch)) |
1696 | #endif |
1697 | value = (double)(-1 + arybase); |
1698 | else |
1699 | value = (double)(tmps2 - tmps + arybase); |
1700 | goto donumset; |
1701 | case O_TIME: |
1702 | #ifndef lint |
1703 | value = (double) time(Null(long*)); |
1704 | #endif |
1705 | goto donumset; |
1706 | case O_TMS: |
1707 | sp = do_tms(str,gimme,arglast); |
1708 | goto array_return; |
1709 | case O_LOCALTIME: |
1710 | if (maxarg < 1) |
1711 | (void)time(&when); |
1712 | else |
1713 | when = (time_t)str_gnum(st[1]); |
1714 | sp = do_time(str,localtime(&when), |
1715 | gimme,arglast); |
1716 | goto array_return; |
1717 | case O_GMTIME: |
1718 | if (maxarg < 1) |
1719 | (void)time(&when); |
1720 | else |
1721 | when = (time_t)str_gnum(st[1]); |
1722 | sp = do_time(str,gmtime(&when), |
1723 | gimme,arglast); |
1724 | goto array_return; |
1725 | case O_TRUNCATE: |
1726 | sp = do_truncate(str,arg, |
1727 | gimme,arglast); |
1728 | goto array_return; |
1729 | case O_LSTAT: |
1730 | case O_STAT: |
1731 | sp = do_stat(str,arg, |
1732 | gimme,arglast); |
1733 | goto array_return; |
1734 | case O_CRYPT: |
1735 | #ifdef HAS_CRYPT |
1736 | tmps = str_get(st[1]); |
1737 | #ifdef FCRYPT |
1738 | str_set(str,fcrypt(tmps,str_get(st[2]))); |
1739 | #else |
1740 | str_set(str,crypt(tmps,str_get(st[2]))); |
1741 | #endif |
1742 | #else |
1743 | fatal( |
1744 | "The crypt() function is unimplemented due to excessive paranoia."); |
1745 | #endif |
1746 | break; |
1747 | case O_ATAN2: |
1748 | value = str_gnum(st[1]); |
1749 | value = atan2(value,str_gnum(st[2])); |
1750 | goto donumset; |
1751 | case O_SIN: |
1752 | if (maxarg < 1) |
1753 | value = str_gnum(stab_val(defstab)); |
1754 | else |
1755 | value = str_gnum(st[1]); |
1756 | value = sin(value); |
1757 | goto donumset; |
1758 | case O_COS: |
1759 | if (maxarg < 1) |
1760 | value = str_gnum(stab_val(defstab)); |
1761 | else |
1762 | value = str_gnum(st[1]); |
1763 | value = cos(value); |
1764 | goto donumset; |
1765 | case O_RAND: |
1766 | if (maxarg < 1) |
1767 | value = 1.0; |
1768 | else |
1769 | value = str_gnum(st[1]); |
1770 | if (value == 0.0) |
1771 | value = 1.0; |
1772 | #if RANDBITS == 31 |
1773 | value = rand() * value / 2147483648.0; |
1774 | #else |
1775 | #if RANDBITS == 16 |
1776 | value = rand() * value / 65536.0; |
1777 | #else |
1778 | #if RANDBITS == 15 |
1779 | value = rand() * value / 32768.0; |
1780 | #else |
1781 | value = rand() * value / (double)(((unsigned long)1) << RANDBITS); |
1782 | #endif |
1783 | #endif |
1784 | #endif |
1785 | goto donumset; |
1786 | case O_SRAND: |
1787 | if (maxarg < 1) { |
1788 | (void)time(&when); |
1789 | anum = when; |
1790 | } |
1791 | else |
1792 | anum = (int)str_gnum(st[1]); |
1793 | (void)srand(anum); |
1794 | goto say_yes; |
1795 | case O_EXP: |
1796 | if (maxarg < 1) |
1797 | value = str_gnum(stab_val(defstab)); |
1798 | else |
1799 | value = str_gnum(st[1]); |
1800 | value = exp(value); |
1801 | goto donumset; |
1802 | case O_LOG: |
1803 | if (maxarg < 1) |
1804 | value = str_gnum(stab_val(defstab)); |
1805 | else |
1806 | value = str_gnum(st[1]); |
1807 | if (value <= 0.0) |
1808 | fatal("Can't take log of %g\n", value); |
1809 | value = log(value); |
1810 | goto donumset; |
1811 | case O_SQRT: |
1812 | if (maxarg < 1) |
1813 | value = str_gnum(stab_val(defstab)); |
1814 | else |
1815 | value = str_gnum(st[1]); |
1816 | if (value < 0.0) |
1817 | fatal("Can't take sqrt of %g\n", value); |
1818 | value = sqrt(value); |
1819 | goto donumset; |
1820 | case O_INT: |
1821 | if (maxarg < 1) |
1822 | value = str_gnum(stab_val(defstab)); |
1823 | else |
1824 | value = str_gnum(st[1]); |
1825 | if (value >= 0.0) |
1826 | (void)modf(value,&value); |
1827 | else { |
1828 | (void)modf(-value,&value); |
1829 | value = -value; |
1830 | } |
1831 | goto donumset; |
1832 | case O_ORD: |
1833 | if (maxarg < 1) |
1834 | tmps = str_get(stab_val(defstab)); |
1835 | else |
1836 | tmps = str_get(st[1]); |
1837 | #ifndef I286 |
1838 | value = (double) (*tmps & 255); |
1839 | #else |
1840 | anum = (int) *tmps; |
1841 | value = (double) (anum & 255); |
1842 | #endif |
1843 | goto donumset; |
1844 | case O_ALARM: |
1845 | #ifdef HAS_ALARM |
1846 | if (maxarg < 1) |
1847 | tmps = str_get(stab_val(defstab)); |
1848 | else |
1849 | tmps = str_get(st[1]); |
1850 | if (!tmps) |
1851 | tmps = "0"; |
1852 | anum = alarm((unsigned int)atoi(tmps)); |
1853 | if (anum < 0) |
1854 | goto say_undef; |
1855 | value = (double)anum; |
1856 | goto donumset; |
1857 | #else |
1858 | fatal("Unsupported function alarm"); |
1859 | break; |
1860 | #endif |
1861 | case O_SLEEP: |
1862 | if (maxarg < 1) |
1863 | tmps = Nullch; |
1864 | else |
1865 | tmps = str_get(st[1]); |
1866 | (void)time(&when); |
1867 | if (!tmps || !*tmps) |
1868 | sleep((32767<<16)+32767); |
1869 | else |
1870 | sleep((unsigned int)atoi(tmps)); |
1871 | #ifndef lint |
1872 | value = (double)when; |
1873 | (void)time(&when); |
1874 | value = ((double)when) - value; |
1875 | #endif |
1876 | goto donumset; |
1877 | case O_RANGE: |
1878 | sp = do_range(gimme,arglast); |
1879 | goto array_return; |
1880 | case O_F_OR_R: |
1881 | if (gimme == G_ARRAY) { /* it's a range */ |
1882 | /* can we optimize to constant array? */ |
1883 | if ((arg[1].arg_type & A_MASK) == A_SINGLE && |
1884 | (arg[2].arg_type & A_MASK) == A_SINGLE) { |
1885 | st[2] = arg[2].arg_ptr.arg_str; |
1886 | sp = do_range(gimme,arglast); |
1887 | st = stack->ary_array; |
1888 | maxarg = sp - arglast[0]; |
1889 | str_free(arg[1].arg_ptr.arg_str); |
1890 | arg[1].arg_ptr.arg_str = Nullstr; |
1891 | str_free(arg[2].arg_ptr.arg_str); |
1892 | arg[2].arg_ptr.arg_str = Nullstr; |
1893 | arg->arg_type = O_ARRAY; |
1894 | arg[1].arg_type = A_STAB|A_DONT; |
1895 | arg->arg_len = 1; |
1896 | stab = arg[1].arg_ptr.arg_stab = aadd(genstab()); |
1897 | ary = stab_array(stab); |
1898 | afill(ary,maxarg - 1); |
1899 | anum = maxarg; |
1900 | st += arglast[0]+1; |
1901 | while (maxarg-- > 0) |
1902 | ary->ary_array[maxarg] = str_smake(st[maxarg]); |
1903 | st -= arglast[0]+1; |
1904 | goto array_return; |
1905 | } |
1906 | arg->arg_type = optype = O_RANGE; |
1907 | maxarg = arg->arg_len = 2; |
1908 | anum = 2; |
1909 | arg[anum].arg_flags &= ~AF_ARYOK; |
1910 | argflags = arg[anum].arg_flags; |
1911 | argtype = arg[anum].arg_type & A_MASK; |
1912 | arg[anum].arg_type = argtype; |
1913 | argptr = arg[anum].arg_ptr; |
1914 | sp = arglast[0]; |
1915 | st -= sp; |
1916 | sp++; |
1917 | goto re_eval; |
1918 | } |
1919 | arg->arg_type = O_FLIP; |
1920 | /* FALL THROUGH */ |
1921 | case O_FLIP: |
1922 | if ((arg[1].arg_type & A_MASK) == A_SINGLE ? |
1923 | last_in_stab && (int)str_gnum(st[1]) == stab_io(last_in_stab)->lines |
1924 | : |
1925 | str_true(st[1]) ) { |
1926 | arg[2].arg_type &= ~A_DONT; |
1927 | arg[1].arg_type |= A_DONT; |
1928 | arg->arg_type = optype = O_FLOP; |
1929 | if (arg->arg_flags & AF_COMMON) { |
1930 | str_numset(str,0.0); |
1931 | anum = 2; |
1932 | argflags = arg[2].arg_flags; |
1933 | argtype = arg[2].arg_type & A_MASK; |
1934 | argptr = arg[2].arg_ptr; |
1935 | sp = arglast[0]; |
1936 | st -= sp++; |
1937 | goto re_eval; |
1938 | } |
1939 | else { |
1940 | str_numset(str,1.0); |
1941 | break; |
1942 | } |
1943 | } |
1944 | str_set(str,""); |
1945 | break; |
1946 | case O_FLOP: |
1947 | str_inc(str); |
1948 | if ((arg[2].arg_type & A_MASK) == A_SINGLE ? |
1949 | last_in_stab && (int)str_gnum(st[2]) == stab_io(last_in_stab)->lines |
1950 | : |
1951 | str_true(st[2]) ) { |
1952 | arg->arg_type = O_FLIP; |
1953 | arg[1].arg_type &= ~A_DONT; |
1954 | arg[2].arg_type |= A_DONT; |
1955 | str_cat(str,"E0"); |
1956 | } |
1957 | break; |
1958 | case O_FORK: |
1959 | #ifdef HAS_FORK |
1960 | anum = fork(); |
1961 | if (anum < 0) |
1962 | goto say_undef; |
1963 | if (!anum) { |
1964 | /*SUPPRESS 560*/ |
1965 | if (tmpstab = stabent("$",allstabs)) |
1966 | str_numset(STAB_STR(tmpstab),(double)getpid()); |
1967 | hclear(pidstatus, FALSE); /* no kids, so don't wait for 'em */ |
1968 | } |
1969 | value = (double)anum; |
1970 | goto donumset; |
1971 | #else |
1972 | fatal("Unsupported function fork"); |
1973 | break; |
1974 | #endif |
1975 | case O_WAIT: |
1976 | #ifdef HAS_WAIT |
1977 | #ifndef lint |
1978 | anum = wait(&argflags); |
1979 | if (anum > 0) |
1980 | pidgone(anum,argflags); |
1981 | value = (double)anum; |
1982 | #endif |
1983 | statusvalue = (unsigned short)argflags; |
1984 | goto donumset; |
1985 | #else |
1986 | fatal("Unsupported function wait"); |
1987 | break; |
1988 | #endif |
1989 | case O_WAITPID: |
1990 | #ifdef HAS_WAIT |
1991 | #ifndef lint |
1992 | anum = (int)str_gnum(st[1]); |
1993 | optype = (int)str_gnum(st[2]); |
1994 | anum = wait4pid(anum, &argflags,optype); |
1995 | value = (double)anum; |
1996 | #endif |
1997 | statusvalue = (unsigned short)argflags; |
1998 | goto donumset; |
1999 | #else |
2000 | fatal("Unsupported function wait"); |
2001 | break; |
2002 | #endif |
2003 | case O_SYSTEM: |
2004 | #ifdef HAS_FORK |
2005 | #ifdef TAINT |
2006 | if (arglast[2] - arglast[1] == 1) { |
2007 | taintenv(); |
2008 | tainted |= st[2]->str_tainted; |
2009 | TAINT_PROPER("system"); |
2010 | } |
2011 | #endif |
2012 | while ((anum = vfork()) == -1) { |
2013 | if (errno != EAGAIN) { |
2014 | value = -1.0; |
2015 | goto donumset; |
2016 | } |
2017 | sleep(5); |
2018 | } |
2019 | if (anum > 0) { |
2020 | #ifndef lint |
2021 | ihand = signal(SIGINT, SIG_IGN); |
2022 | qhand = signal(SIGQUIT, SIG_IGN); |
2023 | argtype = wait4pid(anum, &argflags, 0); |
2024 | #else |
2025 | ihand = qhand = 0; |
2026 | #endif |
2027 | (void)signal(SIGINT, ihand); |
2028 | (void)signal(SIGQUIT, qhand); |
2029 | statusvalue = (unsigned short)argflags; |
2030 | if (argtype < 0) |
2031 | value = -1.0; |
2032 | else { |
2033 | value = (double)((unsigned int)argflags & 0xffff); |
2034 | } |
2035 | do_execfree(); /* free any memory child malloced on vfork */ |
2036 | goto donumset; |
2037 | } |
2038 | if ((arg[1].arg_type & A_MASK) == A_STAB) |
2039 | value = (double)do_aexec(st[1],arglast); |
2040 | else if (arglast[2] - arglast[1] != 1) |
2041 | value = (double)do_aexec(Nullstr,arglast); |
2042 | else { |
2043 | value = (double)do_exec(str_get(str_mortal(st[2]))); |
2044 | } |
2045 | _exit(-1); |
2046 | #else /* ! FORK */ |
2047 | if ((arg[1].arg_type & A_MASK) == A_STAB) |
2048 | value = (double)do_aspawn(st[1],arglast); |
2049 | else if (arglast[2] - arglast[1] != 1) |
2050 | value = (double)do_aspawn(Nullstr,arglast); |
2051 | else { |
2052 | value = (double)do_spawn(str_get(str_mortal(st[2]))); |
2053 | } |
2054 | goto donumset; |
2055 | #endif /* FORK */ |
2056 | case O_EXEC_OP: |
2057 | if ((arg[1].arg_type & A_MASK) == A_STAB) |
2058 | value = (double)do_aexec(st[1],arglast); |
2059 | else if (arglast[2] - arglast[1] != 1) |
2060 | value = (double)do_aexec(Nullstr,arglast); |
2061 | else { |
2062 | #ifdef TAINT |
2063 | taintenv(); |
2064 | tainted |= st[2]->str_tainted; |
2065 | TAINT_PROPER("exec"); |
2066 | #endif |
2067 | value = (double)do_exec(str_get(str_mortal(st[2]))); |
2068 | } |
2069 | goto donumset; |
2070 | case O_HEX: |
2071 | if (maxarg < 1) |
2072 | tmps = str_get(stab_val(defstab)); |
2073 | else |
2074 | tmps = str_get(st[1]); |
2075 | value = (double)scanhex(tmps, 99, &argtype); |
2076 | goto donumset; |
2077 | |
2078 | case O_OCT: |
2079 | if (maxarg < 1) |
2080 | tmps = str_get(stab_val(defstab)); |
2081 | else |
2082 | tmps = str_get(st[1]); |
2083 | while (*tmps && (isSPACE(*tmps) || *tmps == '0')) |
2084 | tmps++; |
2085 | if (*tmps == 'x') |
2086 | value = (double)scanhex(++tmps, 99, &argtype); |
2087 | else |
2088 | value = (double)scanoct(tmps, 99, &argtype); |
2089 | goto donumset; |
2090 | |
2091 | /* These common exits are hidden here in the middle of the switches for the |
2092 | benefit of those machines with limited branch addressing. Sigh. */ |
2093 | |
2094 | array_return: |
2095 | #ifdef DEBUGGING |
2096 | if (debug) { |
2097 | dlevel--; |
2098 | if (debug & 8) { |
2099 | anum = sp - arglast[0]; |
2100 | switch (anum) { |
2101 | case 0: |
2102 | deb("%s RETURNS ()\n",opname[optype]); |
2103 | break; |
2104 | case 1: |
2105 | deb("%s RETURNS (\"%s\")\n",opname[optype], |
2106 | st[1] ? str_get(st[1]) : ""); |
2107 | break; |
2108 | default: |
2109 | tmps = st[1] ? str_get(st[1]) : ""; |
2110 | deb("%s RETURNS %d ARGS (\"%s\",%s\"%s\")\n",opname[optype], |
2111 | anum,tmps,anum==2?"":"...,", |
2112 | st[anum] ? str_get(st[anum]) : ""); |
2113 | break; |
2114 | } |
2115 | } |
2116 | } |
2117 | #endif |
2118 | stack_ary = stack->ary_array; |
2119 | stack_max = stack_ary + stack->ary_max; |
2120 | stack_sp = stack_ary + sp; |
2121 | return sp; |
2122 | |
2123 | say_yes: |
2124 | str = &str_yes; |
2125 | goto normal_return; |
2126 | |
2127 | say_no: |
2128 | str = &str_no; |
2129 | goto normal_return; |
2130 | |
2131 | say_undef: |
2132 | str = &str_undef; |
2133 | goto normal_return; |
2134 | |
2135 | say_zero: |
2136 | value = 0.0; |
2137 | /* FALL THROUGH */ |
2138 | |
2139 | donumset: |
2140 | str_numset(str,value); |
2141 | STABSET(str); |
2142 | st[1] = str; |
2143 | #ifdef DEBUGGING |
2144 | if (debug) { |
2145 | dlevel--; |
2146 | if (debug & 8) |
2147 | deb("%s RETURNS \"%f\"\n",opname[optype],value); |
2148 | } |
2149 | #endif |
2150 | stack_ary = stack->ary_array; |
2151 | stack_max = stack_ary + stack->ary_max; |
2152 | stack_sp = stack_ary + arglast[0] + 1; |
2153 | return arglast[0] + 1; |
2154 | #ifdef SMALLSWITCHES |
2155 | } |
2156 | else |
2157 | switch (optype) { |
2158 | #endif |
2159 | case O_CHOWN: |
2160 | #ifdef HAS_CHOWN |
2161 | value = (double)apply(optype,arglast); |
2162 | goto donumset; |
2163 | #else |
2164 | fatal("Unsupported function chown"); |
2165 | break; |
2166 | #endif |
2167 | case O_KILL: |
2168 | #ifdef HAS_KILL |
2169 | value = (double)apply(optype,arglast); |
2170 | goto donumset; |
2171 | #else |
2172 | fatal("Unsupported function kill"); |
2173 | break; |
2174 | #endif |
2175 | case O_UNLINK: |
2176 | case O_CHMOD: |
2177 | case O_UTIME: |
2178 | value = (double)apply(optype,arglast); |
2179 | goto donumset; |
2180 | case O_UMASK: |
2181 | #ifdef HAS_UMASK |
2182 | if (maxarg < 1) { |
2183 | anum = umask(0); |
2184 | (void)umask(anum); |
2185 | } |
2186 | else |
2187 | anum = umask((int)str_gnum(st[1])); |
2188 | value = (double)anum; |
2189 | #ifdef TAINT |
2190 | TAINT_PROPER("umask"); |
2191 | #endif |
2192 | goto donumset; |
2193 | #else |
2194 | fatal("Unsupported function umask"); |
2195 | break; |
2196 | #endif |
2197 | #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM) |
2198 | case O_MSGGET: |
2199 | case O_SHMGET: |
2200 | case O_SEMGET: |
2201 | if ((anum = do_ipcget(optype, arglast)) == -1) |
2202 | goto say_undef; |
2203 | value = (double)anum; |
2204 | goto donumset; |
2205 | case O_MSGCTL: |
2206 | case O_SHMCTL: |
2207 | case O_SEMCTL: |
2208 | anum = do_ipcctl(optype, arglast); |
2209 | if (anum == -1) |
2210 | goto say_undef; |
2211 | if (anum != 0) { |
2212 | value = (double)anum; |
2213 | goto donumset; |
2214 | } |
2215 | str_set(str,"0 but true"); |
2216 | STABSET(str); |
2217 | break; |
2218 | case O_MSGSND: |
2219 | value = (double)(do_msgsnd(arglast) >= 0); |
2220 | goto donumset; |
2221 | case O_MSGRCV: |
2222 | value = (double)(do_msgrcv(arglast) >= 0); |
2223 | goto donumset; |
2224 | case O_SEMOP: |
2225 | value = (double)(do_semop(arglast) >= 0); |
2226 | goto donumset; |
2227 | case O_SHMREAD: |
2228 | case O_SHMWRITE: |
2229 | value = (double)(do_shmio(optype, arglast) >= 0); |
2230 | goto donumset; |
2231 | #else /* not SYSVIPC */ |
2232 | case O_MSGGET: |
2233 | case O_MSGCTL: |
2234 | case O_MSGSND: |
2235 | case O_MSGRCV: |
2236 | case O_SEMGET: |
2237 | case O_SEMCTL: |
2238 | case O_SEMOP: |
2239 | case O_SHMGET: |
2240 | case O_SHMCTL: |
2241 | case O_SHMREAD: |
2242 | case O_SHMWRITE: |
2243 | fatal("System V IPC is not implemented on this machine"); |
2244 | #endif /* not SYSVIPC */ |
2245 | case O_RENAME: |
2246 | tmps = str_get(st[1]); |
2247 | tmps2 = str_get(st[2]); |
2248 | #ifdef TAINT |
2249 | TAINT_PROPER("rename"); |
2250 | #endif |
2251 | #ifdef HAS_RENAME |
2252 | value = (double)(rename(tmps,tmps2) >= 0); |
2253 | #else |
2254 | if (same_dirent(tmps2, tmps)) /* can always rename to same name */ |
2255 | anum = 1; |
2256 | else { |
2257 | if (euid || stat(tmps2,&statbuf) < 0 || !S_ISDIR(statbuf.st_mode)) |
2258 | (void)UNLINK(tmps2); |
2259 | if (!(anum = link(tmps,tmps2))) |
2260 | anum = UNLINK(tmps); |
2261 | } |
2262 | value = (double)(anum >= 0); |
2263 | #endif |
2264 | goto donumset; |
2265 | case O_LINK: |
2266 | #ifdef HAS_LINK |
2267 | tmps = str_get(st[1]); |
2268 | tmps2 = str_get(st[2]); |
2269 | #ifdef TAINT |
2270 | TAINT_PROPER("link"); |
2271 | #endif |
2272 | value = (double)(link(tmps,tmps2) >= 0); |
2273 | goto donumset; |
2274 | #else |
2275 | fatal("Unsupported function link"); |
2276 | break; |
2277 | #endif |
2278 | case O_MKDIR: |
2279 | tmps = str_get(st[1]); |
2280 | anum = (int)str_gnum(st[2]); |
2281 | #ifdef TAINT |
2282 | TAINT_PROPER("mkdir"); |
2283 | #endif |
2284 | #ifdef HAS_MKDIR |
2285 | value = (double)(mkdir(tmps,anum) >= 0); |
2286 | goto donumset; |
2287 | #else |
2288 | (void)strcpy(buf,"mkdir "); |
2289 | #endif |
2290 | #if !defined(HAS_MKDIR) || !defined(HAS_RMDIR) |
2291 | one_liner: |
2292 | for (tmps2 = buf+6; *tmps; ) { |
2293 | *tmps2++ = '\\'; |
2294 | *tmps2++ = *tmps++; |
2295 | } |
2296 | (void)strcpy(tmps2," 2>&1"); |
2297 | rsfp = mypopen(buf,"r"); |
2298 | if (rsfp) { |
2299 | *buf = '\0'; |
2300 | tmps2 = fgets(buf,sizeof buf,rsfp); |
2301 | (void)mypclose(rsfp); |
2302 | if (tmps2 != Nullch) { |
2303 | for (errno = 1; errno < sys_nerr; errno++) { |
2304 | if (instr(buf,sys_errlist[errno])) /* you don't see this */ |
2305 | goto say_zero; |
2306 | } |
2307 | errno = 0; |
2308 | #ifndef EACCES |
2309 | #define EACCES EPERM |
2310 | #endif |
2311 | if (instr(buf,"cannot make")) |
2312 | errno = EEXIST; |
2313 | else if (instr(buf,"existing file")) |
2314 | errno = EEXIST; |
2315 | else if (instr(buf,"ile exists")) |
2316 | errno = EEXIST; |
2317 | else if (instr(buf,"non-exist")) |
2318 | errno = ENOENT; |
2319 | else if (instr(buf,"does not exist")) |
2320 | errno = ENOENT; |
2321 | else if (instr(buf,"not empty")) |
2322 | errno = EBUSY; |
2323 | else if (instr(buf,"cannot access")) |
2324 | errno = EACCES; |
2325 | else |
2326 | errno = EPERM; |
2327 | goto say_zero; |
2328 | } |
2329 | else { /* some mkdirs return no failure indication */ |
2330 | tmps = str_get(st[1]); |
2331 | anum = (stat(tmps,&statbuf) >= 0); |
2332 | if (optype == O_RMDIR) |
2333 | anum = !anum; |
2334 | if (anum) |
2335 | errno = 0; |
2336 | else |
2337 | errno = EACCES; /* a guess */ |
2338 | value = (double)anum; |
2339 | } |
2340 | goto donumset; |
2341 | } |
2342 | else |
2343 | goto say_zero; |
2344 | #endif |
2345 | case O_RMDIR: |
2346 | if (maxarg < 1) |
2347 | tmps = str_get(stab_val(defstab)); |
2348 | else |
2349 | tmps = str_get(st[1]); |
2350 | #ifdef TAINT |
2351 | TAINT_PROPER("rmdir"); |
2352 | #endif |
2353 | #ifdef HAS_RMDIR |
2354 | value = (double)(rmdir(tmps) >= 0); |
2355 | goto donumset; |
2356 | #else |
2357 | (void)strcpy(buf,"rmdir "); |
2358 | goto one_liner; /* see above in HAS_MKDIR */ |
2359 | #endif |
2360 | case O_GETPPID: |
2361 | #ifdef HAS_GETPPID |
2362 | value = (double)getppid(); |
2363 | goto donumset; |
2364 | #else |
2365 | fatal("Unsupported function getppid"); |
2366 | break; |
2367 | #endif |
2368 | case O_GETPGRP: |
2369 | #ifdef HAS_GETPGRP |
2370 | if (maxarg < 1) |
2371 | anum = 0; |
2372 | else |
2373 | anum = (int)str_gnum(st[1]); |
2374 | #ifdef _POSIX_SOURCE |
2375 | if (anum != 0) |
2376 | fatal("POSIX getpgrp can't take an argument"); |
2377 | value = (double)getpgrp(); |
2378 | #else |
2379 | value = (double)getpgrp(anum); |
2380 | #endif |
2381 | goto donumset; |
2382 | #else |
2383 | fatal("The getpgrp() function is unimplemented on this machine"); |
2384 | break; |
2385 | #endif |
2386 | case O_SETPGRP: |
2387 | #ifdef HAS_SETPGRP |
2388 | argtype = (int)str_gnum(st[1]); |
2389 | anum = (int)str_gnum(st[2]); |
2390 | #ifdef TAINT |
2391 | TAINT_PROPER("setpgrp"); |
2392 | #endif |
2393 | value = (double)(setpgrp(argtype,anum) >= 0); |
2394 | goto donumset; |
2395 | #else |
2396 | fatal("The setpgrp() function is unimplemented on this machine"); |
2397 | break; |
2398 | #endif |
2399 | case O_GETPRIORITY: |
2400 | #ifdef HAS_GETPRIORITY |
2401 | argtype = (int)str_gnum(st[1]); |
2402 | anum = (int)str_gnum(st[2]); |
2403 | value = (double)getpriority(argtype,anum); |
2404 | goto donumset; |
2405 | #else |
2406 | fatal("The getpriority() function is unimplemented on this machine"); |
2407 | break; |
2408 | #endif |
2409 | case O_SETPRIORITY: |
2410 | #ifdef HAS_SETPRIORITY |
2411 | argtype = (int)str_gnum(st[1]); |
2412 | anum = (int)str_gnum(st[2]); |
2413 | optype = (int)str_gnum(st[3]); |
2414 | #ifdef TAINT |
2415 | TAINT_PROPER("setpriority"); |
2416 | #endif |
2417 | value = (double)(setpriority(argtype,anum,optype) >= 0); |
2418 | goto donumset; |
2419 | #else |
2420 | fatal("The setpriority() function is unimplemented on this machine"); |
2421 | break; |
2422 | #endif |
2423 | case O_CHROOT: |
2424 | #ifdef HAS_CHROOT |
2425 | if (maxarg < 1) |
2426 | tmps = str_get(stab_val(defstab)); |
2427 | else |
2428 | tmps = str_get(st[1]); |
2429 | #ifdef TAINT |
2430 | TAINT_PROPER("chroot"); |
2431 | #endif |
2432 | value = (double)(chroot(tmps) >= 0); |
2433 | goto donumset; |
2434 | #else |
2435 | fatal("Unsupported function chroot"); |
2436 | break; |
2437 | #endif |
2438 | case O_FCNTL: |
2439 | case O_IOCTL: |
2440 | if (maxarg <= 0) |
2441 | stab = last_in_stab; |
2442 | else if ((arg[1].arg_type & A_MASK) == A_WORD) |
2443 | stab = arg[1].arg_ptr.arg_stab; |
2444 | else |
2445 | stab = stabent(str_get(st[1]),TRUE); |
2446 | argtype = U_I(str_gnum(st[2])); |
2447 | #ifdef TAINT |
2448 | TAINT_PROPER("ioctl"); |
2449 | #endif |
2450 | anum = do_ctl(optype,stab,argtype,st[3]); |
2451 | if (anum == -1) |
2452 | goto say_undef; |
2453 | if (anum != 0) { |
2454 | value = (double)anum; |
2455 | goto donumset; |
2456 | } |
2457 | str_set(str,"0 but true"); |
2458 | STABSET(str); |
2459 | break; |
2460 | case O_FLOCK: |
2461 | #ifdef HAS_FLOCK |
2462 | if (maxarg <= 0) |
2463 | stab = last_in_stab; |
2464 | else if ((arg[1].arg_type & A_MASK) == A_WORD) |
2465 | stab = arg[1].arg_ptr.arg_stab; |
2466 | else |
2467 | stab = stabent(str_get(st[1]),TRUE); |
2468 | if (stab && stab_io(stab)) |
2469 | fp = stab_io(stab)->ifp; |
2470 | else |
2471 | fp = Nullfp; |
2472 | if (fp) { |
2473 | argtype = (int)str_gnum(st[2]); |
2474 | value = (double)(flock(fileno(fp),argtype) >= 0); |
2475 | } |
2476 | else |
2477 | value = 0; |
2478 | goto donumset; |
2479 | #else |
2480 | fatal("The flock() function is unimplemented on this machine"); |
2481 | break; |
2482 | #endif |
2483 | case O_UNSHIFT: |
2484 | ary = stab_array(arg[1].arg_ptr.arg_stab); |
2485 | if (arglast[2] - arglast[1] != 1) |
2486 | do_unshift(ary,arglast); |
2487 | else { |
2488 | STR *tmpstr = Str_new(52,0); /* must copy the STR */ |
2489 | str_sset(tmpstr,st[2]); |
2490 | aunshift(ary,1); |
2491 | (void)astore(ary,0,tmpstr); |
2492 | } |
2493 | value = (double)(ary->ary_fill + 1); |
2494 | goto donumset; |
2495 | |
2496 | case O_TRY: |
2497 | sp = do_try(arg[1].arg_ptr.arg_cmd, |
2498 | gimme,arglast); |
2499 | goto array_return; |
2500 | |
2501 | case O_EVALONCE: |
2502 | sp = do_eval(st[1], O_EVAL, curcmd->c_stash, TRUE, |
2503 | gimme,arglast); |
2504 | if (eval_root) { |
2505 | str_free(arg[1].arg_ptr.arg_str); |
2506 | arg[1].arg_ptr.arg_cmd = eval_root; |
2507 | arg[1].arg_type = (A_CMD|A_DONT); |
2508 | arg[0].arg_type = O_TRY; |
2509 | } |
2510 | goto array_return; |
2511 | |
2512 | case O_REQUIRE: |
2513 | case O_DOFILE: |
2514 | case O_EVAL: |
2515 | if (maxarg < 1) |
2516 | tmpstr = stab_val(defstab); |
2517 | else |
2518 | tmpstr = |
2519 | (arg[1].arg_type & A_MASK) != A_NULL ? st[1] : stab_val(defstab); |
2520 | #ifdef TAINT |
2521 | tainted |= tmpstr->str_tainted; |
2522 | TAINT_PROPER("eval"); |
2523 | #endif |
2524 | sp = do_eval(tmpstr, optype, curcmd->c_stash, FALSE, |
2525 | gimme,arglast); |
2526 | goto array_return; |
2527 | |
2528 | case O_FTRREAD: |
2529 | argtype = 0; |
2530 | anum = S_IRUSR; |
2531 | goto check_perm; |
2532 | case O_FTRWRITE: |
2533 | argtype = 0; |
2534 | anum = S_IWUSR; |
2535 | goto check_perm; |
2536 | case O_FTREXEC: |
2537 | argtype = 0; |
2538 | anum = S_IXUSR; |
2539 | goto check_perm; |
2540 | case O_FTEREAD: |
2541 | argtype = 1; |
2542 | anum = S_IRUSR; |
2543 | goto check_perm; |
2544 | case O_FTEWRITE: |
2545 | argtype = 1; |
2546 | anum = S_IWUSR; |
2547 | goto check_perm; |
2548 | case O_FTEEXEC: |
2549 | argtype = 1; |
2550 | anum = S_IXUSR; |
2551 | check_perm: |
2552 | if (mystat(arg,st[1]) < 0) |
2553 | goto say_undef; |
2554 | if (cando(anum,argtype,&statcache)) |
2555 | goto say_yes; |
2556 | goto say_no; |
2557 | |
2558 | case O_FTIS: |
2559 | if (mystat(arg,st[1]) < 0) |
2560 | goto say_undef; |
2561 | goto say_yes; |
2562 | case O_FTEOWNED: |
2563 | case O_FTROWNED: |
2564 | if (mystat(arg,st[1]) < 0) |
2565 | goto say_undef; |
2566 | if (statcache.st_uid == (optype == O_FTEOWNED ? euid : uid) ) |
2567 | goto say_yes; |
2568 | goto say_no; |
2569 | case O_FTZERO: |
2570 | if (mystat(arg,st[1]) < 0) |
2571 | goto say_undef; |
2572 | if (!statcache.st_size) |
2573 | goto say_yes; |
2574 | goto say_no; |
2575 | case O_FTSIZE: |
2576 | if (mystat(arg,st[1]) < 0) |
2577 | goto say_undef; |
2578 | value = (double)statcache.st_size; |
2579 | goto donumset; |
2580 | |
2581 | case O_FTMTIME: |
2582 | if (mystat(arg,st[1]) < 0) |
2583 | goto say_undef; |
2584 | value = (double)(basetime - statcache.st_mtime) / 86400.0; |
2585 | goto donumset; |
2586 | case O_FTATIME: |
2587 | if (mystat(arg,st[1]) < 0) |
2588 | goto say_undef; |
2589 | value = (double)(basetime - statcache.st_atime) / 86400.0; |
2590 | goto donumset; |
2591 | case O_FTCTIME: |
2592 | if (mystat(arg,st[1]) < 0) |
2593 | goto say_undef; |
2594 | value = (double)(basetime - statcache.st_ctime) / 86400.0; |
2595 | goto donumset; |
2596 | |
2597 | case O_FTSOCK: |
2598 | if (mystat(arg,st[1]) < 0) |
2599 | goto say_undef; |
2600 | if (S_ISSOCK(statcache.st_mode)) |
2601 | goto say_yes; |
2602 | goto say_no; |
2603 | case O_FTCHR: |
2604 | if (mystat(arg,st[1]) < 0) |
2605 | goto say_undef; |
2606 | if (S_ISCHR(statcache.st_mode)) |
2607 | goto say_yes; |
2608 | goto say_no; |
2609 | case O_FTBLK: |
2610 | if (mystat(arg,st[1]) < 0) |
2611 | goto say_undef; |
2612 | if (S_ISBLK(statcache.st_mode)) |
2613 | goto say_yes; |
2614 | goto say_no; |
2615 | case O_FTFILE: |
2616 | if (mystat(arg,st[1]) < 0) |
2617 | goto say_undef; |
2618 | if (S_ISREG(statcache.st_mode)) |
2619 | goto say_yes; |
2620 | goto say_no; |
2621 | case O_FTDIR: |
2622 | if (mystat(arg,st[1]) < 0) |
2623 | goto say_undef; |
2624 | if (S_ISDIR(statcache.st_mode)) |
2625 | goto say_yes; |
2626 | goto say_no; |
2627 | case O_FTPIPE: |
2628 | if (mystat(arg,st[1]) < 0) |
2629 | goto say_undef; |
2630 | if (S_ISFIFO(statcache.st_mode)) |
2631 | goto say_yes; |
2632 | goto say_no; |
2633 | case O_FTLINK: |
2634 | if (mylstat(arg,st[1]) < 0) |
2635 | goto say_undef; |
2636 | if (S_ISLNK(statcache.st_mode)) |
2637 | goto say_yes; |
2638 | goto say_no; |
2639 | case O_SYMLINK: |
2640 | #ifdef HAS_SYMLINK |
2641 | tmps = str_get(st[1]); |
2642 | tmps2 = str_get(st[2]); |
2643 | #ifdef TAINT |
2644 | TAINT_PROPER("symlink"); |
2645 | #endif |
2646 | value = (double)(symlink(tmps,tmps2) >= 0); |
2647 | goto donumset; |
2648 | #else |
2649 | fatal("Unsupported function symlink"); |
2650 | #endif |
2651 | case O_READLINK: |
2652 | #ifdef HAS_SYMLINK |
2653 | if (maxarg < 1) |
2654 | tmps = str_get(stab_val(defstab)); |
2655 | else |
2656 | tmps = str_get(st[1]); |
2657 | anum = readlink(tmps,buf,sizeof buf); |
2658 | if (anum < 0) |
2659 | goto say_undef; |
2660 | str_nset(str,buf,anum); |
2661 | break; |
2662 | #else |
2663 | goto say_undef; /* just pretend it's a normal file */ |
2664 | #endif |
2665 | case O_FTSUID: |
2666 | #ifdef S_ISUID |
2667 | anum = S_ISUID; |
2668 | goto check_xid; |
2669 | #else |
2670 | goto say_no; |
2671 | #endif |
2672 | case O_FTSGID: |
2673 | #ifdef S_ISGID |
2674 | anum = S_ISGID; |
2675 | goto check_xid; |
2676 | #else |
2677 | goto say_no; |
2678 | #endif |
2679 | case O_FTSVTX: |
2680 | #ifdef S_ISVTX |
2681 | anum = S_ISVTX; |
2682 | #else |
2683 | goto say_no; |
2684 | #endif |
2685 | check_xid: |
2686 | if (mystat(arg,st[1]) < 0) |
2687 | goto say_undef; |
2688 | if (statcache.st_mode & anum) |
2689 | goto say_yes; |
2690 | goto say_no; |
2691 | case O_FTTTY: |
2692 | if (arg[1].arg_type & A_DONT) { |
2693 | stab = arg[1].arg_ptr.arg_stab; |
2694 | tmps = ""; |
2695 | } |
2696 | else |
2697 | stab = stabent(tmps = str_get(st[1]),FALSE); |
2698 | if (stab && stab_io(stab) && stab_io(stab)->ifp) |
2699 | anum = fileno(stab_io(stab)->ifp); |
2700 | else if (isDIGIT(*tmps)) |
2701 | anum = atoi(tmps); |
2702 | else |
2703 | goto say_undef; |
2704 | if (isatty(anum)) |
2705 | goto say_yes; |
2706 | goto say_no; |
2707 | case O_FTTEXT: |
2708 | case O_FTBINARY: |
2709 | str = do_fttext(arg,st[1]); |
2710 | break; |
2711 | #ifdef HAS_SOCKET |
2712 | case O_SOCKET: |
2713 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
2714 | stab = arg[1].arg_ptr.arg_stab; |
2715 | else |
2716 | stab = stabent(str_get(st[1]),TRUE); |
2717 | #ifndef lint |
2718 | value = (double)do_socket(stab,arglast); |
2719 | #else |
2720 | (void)do_socket(stab,arglast); |
2721 | #endif |
2722 | goto donumset; |
2723 | case O_BIND: |
2724 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
2725 | stab = arg[1].arg_ptr.arg_stab; |
2726 | else |
2727 | stab = stabent(str_get(st[1]),TRUE); |
2728 | #ifndef lint |
2729 | value = (double)do_bind(stab,arglast); |
2730 | #else |
2731 | (void)do_bind(stab,arglast); |
2732 | #endif |
2733 | goto donumset; |
2734 | case O_CONNECT: |
2735 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
2736 | stab = arg[1].arg_ptr.arg_stab; |
2737 | else |
2738 | stab = stabent(str_get(st[1]),TRUE); |
2739 | #ifndef lint |
2740 | value = (double)do_connect(stab,arglast); |
2741 | #else |
2742 | (void)do_connect(stab,arglast); |
2743 | #endif |
2744 | goto donumset; |
2745 | case O_LISTEN: |
2746 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
2747 | stab = arg[1].arg_ptr.arg_stab; |
2748 | else |
2749 | stab = stabent(str_get(st[1]),TRUE); |
2750 | #ifndef lint |
2751 | value = (double)do_listen(stab,arglast); |
2752 | #else |
2753 | (void)do_listen(stab,arglast); |
2754 | #endif |
2755 | goto donumset; |
2756 | case O_ACCEPT: |
2757 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
2758 | stab = arg[1].arg_ptr.arg_stab; |
2759 | else |
2760 | stab = stabent(str_get(st[1]),TRUE); |
2761 | if ((arg[2].arg_type & A_MASK) == A_WORD) |
2762 | stab2 = arg[2].arg_ptr.arg_stab; |
2763 | else |
2764 | stab2 = stabent(str_get(st[2]),TRUE); |
2765 | do_accept(str,stab,stab2); |
2766 | STABSET(str); |
2767 | break; |
2768 | case O_GHBYNAME: |
2769 | if (maxarg < 1) |
2770 | goto say_undef; |
2771 | case O_GHBYADDR: |
2772 | case O_GHOSTENT: |
2773 | sp = do_ghent(optype, |
2774 | gimme,arglast); |
2775 | goto array_return; |
2776 | case O_GNBYNAME: |
2777 | if (maxarg < 1) |
2778 | goto say_undef; |
2779 | case O_GNBYADDR: |
2780 | case O_GNETENT: |
2781 | sp = do_gnent(optype, |
2782 | gimme,arglast); |
2783 | goto array_return; |
2784 | case O_GPBYNAME: |
2785 | if (maxarg < 1) |
2786 | goto say_undef; |
2787 | case O_GPBYNUMBER: |
2788 | case O_GPROTOENT: |
2789 | sp = do_gpent(optype, |
2790 | gimme,arglast); |
2791 | goto array_return; |
2792 | case O_GSBYNAME: |
2793 | if (maxarg < 1) |
2794 | goto say_undef; |
2795 | case O_GSBYPORT: |
2796 | case O_GSERVENT: |
2797 | sp = do_gsent(optype, |
2798 | gimme,arglast); |
2799 | goto array_return; |
2800 | case O_SHOSTENT: |
2801 | value = (double) sethostent((int)str_gnum(st[1])); |
2802 | goto donumset; |
2803 | case O_SNETENT: |
2804 | value = (double) setnetent((int)str_gnum(st[1])); |
2805 | goto donumset; |
2806 | case O_SPROTOENT: |
2807 | value = (double) setprotoent((int)str_gnum(st[1])); |
2808 | goto donumset; |
2809 | case O_SSERVENT: |
2810 | value = (double) setservent((int)str_gnum(st[1])); |
2811 | goto donumset; |
2812 | case O_EHOSTENT: |
2813 | value = (double) endhostent(); |
2814 | goto donumset; |
2815 | case O_ENETENT: |
2816 | value = (double) endnetent(); |
2817 | goto donumset; |
2818 | case O_EPROTOENT: |
2819 | value = (double) endprotoent(); |
2820 | goto donumset; |
2821 | case O_ESERVENT: |
2822 | value = (double) endservent(); |
2823 | goto donumset; |
2824 | case O_SOCKPAIR: |
2825 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
2826 | stab = arg[1].arg_ptr.arg_stab; |
2827 | else |
2828 | stab = stabent(str_get(st[1]),TRUE); |
2829 | if ((arg[2].arg_type & A_MASK) == A_WORD) |
2830 | stab2 = arg[2].arg_ptr.arg_stab; |
2831 | else |
2832 | stab2 = stabent(str_get(st[2]),TRUE); |
2833 | #ifndef lint |
2834 | value = (double)do_spair(stab,stab2,arglast); |
2835 | #else |
2836 | (void)do_spair(stab,stab2,arglast); |
2837 | #endif |
2838 | goto donumset; |
2839 | case O_SHUTDOWN: |
2840 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
2841 | stab = arg[1].arg_ptr.arg_stab; |
2842 | else |
2843 | stab = stabent(str_get(st[1]),TRUE); |
2844 | #ifndef lint |
2845 | value = (double)do_shutdown(stab,arglast); |
2846 | #else |
2847 | (void)do_shutdown(stab,arglast); |
2848 | #endif |
2849 | goto donumset; |
2850 | case O_GSOCKOPT: |
2851 | case O_SSOCKOPT: |
2852 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
2853 | stab = arg[1].arg_ptr.arg_stab; |
2854 | else |
2855 | stab = stabent(str_get(st[1]),TRUE); |
2856 | sp = do_sopt(optype,stab,arglast); |
2857 | goto array_return; |
2858 | case O_GETSOCKNAME: |
2859 | case O_GETPEERNAME: |
2860 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
2861 | stab = arg[1].arg_ptr.arg_stab; |
2862 | else |
2863 | stab = stabent(str_get(st[1]),TRUE); |
2864 | if (!stab) |
2865 | goto say_undef; |
2866 | sp = do_getsockname(optype,stab,arglast); |
2867 | goto array_return; |
2868 | |
2869 | #else /* HAS_SOCKET not defined */ |
2870 | case O_SOCKET: |
2871 | case O_BIND: |
2872 | case O_CONNECT: |
2873 | case O_LISTEN: |
2874 | case O_ACCEPT: |
2875 | case O_SOCKPAIR: |
2876 | case O_GHBYNAME: |
2877 | case O_GHBYADDR: |
2878 | case O_GHOSTENT: |
2879 | case O_GNBYNAME: |
2880 | case O_GNBYADDR: |
2881 | case O_GNETENT: |
2882 | case O_GPBYNAME: |
2883 | case O_GPBYNUMBER: |
2884 | case O_GPROTOENT: |
2885 | case O_GSBYNAME: |
2886 | case O_GSBYPORT: |
2887 | case O_GSERVENT: |
2888 | case O_SHOSTENT: |
2889 | case O_SNETENT: |
2890 | case O_SPROTOENT: |
2891 | case O_SSERVENT: |
2892 | case O_EHOSTENT: |
2893 | case O_ENETENT: |
2894 | case O_EPROTOENT: |
2895 | case O_ESERVENT: |
2896 | case O_SHUTDOWN: |
2897 | case O_GSOCKOPT: |
2898 | case O_SSOCKOPT: |
2899 | case O_GETSOCKNAME: |
2900 | case O_GETPEERNAME: |
2901 | badsock: |
2902 | fatal("Unsupported socket function"); |
2903 | #endif /* HAS_SOCKET */ |
2904 | case O_SSELECT: |
2905 | #ifdef HAS_SELECT |
2906 | sp = do_select(gimme,arglast); |
2907 | goto array_return; |
2908 | #else |
2909 | fatal("select not implemented"); |
2910 | #endif |
2911 | case O_FILENO: |
2912 | if (maxarg < 1) |
2913 | goto say_undef; |
2914 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
2915 | stab = arg[1].arg_ptr.arg_stab; |
2916 | else |
2917 | stab = stabent(str_get(st[1]),TRUE); |
2918 | if (!stab || !(stio = stab_io(stab)) || !(fp = stio->ifp)) |
2919 | goto say_undef; |
2920 | value = fileno(fp); |
2921 | goto donumset; |
2922 | case O_BINMODE: |
2923 | if (maxarg < 1) |
2924 | goto say_undef; |
2925 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
2926 | stab = arg[1].arg_ptr.arg_stab; |
2927 | else |
2928 | stab = stabent(str_get(st[1]),TRUE); |
2929 | if (!stab || !(stio = stab_io(stab)) || !(fp = stio->ifp)) |
2930 | goto say_undef; |
2931 | #ifdef DOSISH |
2932 | #ifdef atarist |
2933 | if(fflush(fp)) |
2934 | str_set(str, No); |
2935 | else |
2936 | { |
2937 | fp->_flag |= _IOBIN; |
2938 | str_set(str, Yes); |
2939 | } |
2940 | #else |
2941 | str_set(str, (setmode(fileno(fp), O_BINARY) != -1) ? Yes : No); |
2942 | #endif |
2943 | #else |
2944 | str_set(str, Yes); |
2945 | #endif |
2946 | STABSET(str); |
2947 | break; |
2948 | case O_VEC: |
2949 | sp = do_vec(str == st[1], arg->arg_ptr.arg_str, arglast); |
2950 | goto array_return; |
2951 | case O_GPWNAM: |
2952 | case O_GPWUID: |
2953 | case O_GPWENT: |
2954 | #ifdef HAS_PASSWD |
2955 | sp = do_gpwent(optype, |
2956 | gimme,arglast); |
2957 | goto array_return; |
2958 | case O_SPWENT: |
2959 | value = (double) setpwent(); |
2960 | goto donumset; |
2961 | case O_EPWENT: |
2962 | value = (double) endpwent(); |
2963 | goto donumset; |
2964 | #else |
2965 | case O_EPWENT: |
2966 | case O_SPWENT: |
2967 | fatal("Unsupported password function"); |
2968 | break; |
2969 | #endif |
2970 | case O_GGRNAM: |
2971 | case O_GGRGID: |
2972 | case O_GGRENT: |
2973 | #ifdef HAS_GROUP |
2974 | sp = do_ggrent(optype, |
2975 | gimme,arglast); |
2976 | goto array_return; |
2977 | case O_SGRENT: |
2978 | value = (double) setgrent(); |
2979 | goto donumset; |
2980 | case O_EGRENT: |
2981 | value = (double) endgrent(); |
2982 | goto donumset; |
2983 | #else |
2984 | case O_EGRENT: |
2985 | case O_SGRENT: |
2986 | fatal("Unsupported group function"); |
2987 | break; |
2988 | #endif |
2989 | case O_GETLOGIN: |
2990 | #ifdef HAS_GETLOGIN |
2991 | if (!(tmps = getlogin())) |
2992 | goto say_undef; |
2993 | str_set(str,tmps); |
2994 | #else |
2995 | fatal("Unsupported function getlogin"); |
2996 | #endif |
2997 | break; |
2998 | case O_OPEN_DIR: |
2999 | case O_READDIR: |
3000 | case O_TELLDIR: |
3001 | case O_SEEKDIR: |
3002 | case O_REWINDDIR: |
3003 | case O_CLOSEDIR: |
3004 | if (maxarg < 1) |
3005 | goto say_undef; |
3006 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
3007 | stab = arg[1].arg_ptr.arg_stab; |
3008 | else |
3009 | stab = stabent(str_get(st[1]),TRUE); |
3010 | if (!stab) |
3011 | goto say_undef; |
3012 | sp = do_dirop(optype,stab,gimme,arglast); |
3013 | goto array_return; |
3014 | case O_SYSCALL: |
3015 | value = (double)do_syscall(arglast); |
3016 | goto donumset; |
3017 | case O_PIPE_OP: |
3018 | #ifdef HAS_PIPE |
3019 | if ((arg[1].arg_type & A_MASK) == A_WORD) |
3020 | stab = arg[1].arg_ptr.arg_stab; |
3021 | else |
3022 | stab = stabent(str_get(st[1]),TRUE); |
3023 | if ((arg[2].arg_type & A_MASK) == A_WORD) |
3024 | stab2 = arg[2].arg_ptr.arg_stab; |
3025 | else |
3026 | stab2 = stabent(str_get(st[2]),TRUE); |
3027 | do_pipe(str,stab,stab2); |
3028 | STABSET(str); |
3029 | #else |
3030 | fatal("Unsupported function pipe"); |
3031 | #endif |
3032 | break; |
3033 | } |
3034 | |
3035 | normal_return: |
3036 | st[1] = str; |
3037 | #ifdef DEBUGGING |
3038 | if (debug) { |
3039 | dlevel--; |
3040 | if (debug & 8) |
3041 | deb("%s RETURNS \"%s\"\n",opname[optype],str_get(str)); |
3042 | } |
3043 | #endif |
3044 | stack_ary = stack->ary_array; |
3045 | stack_max = stack_ary + stack->ary_max; |
3046 | stack_sp = stack_ary + arglast[0] + 1; |
3047 | return arglast[0] + 1; |
3048 | } |