Commit | Line | Data |
---|---|---|
b803c326 | 1 | #ifndef lint |
ddec95fa | 2 | static char sccsid[] = "@(#)run.c 4.8 %G%"; |
b803c326 | 3 | #endif |
059b34c5 | 4 | |
ddec95fa | 5 | #include "sys/param.h" |
059b34c5 | 6 | #include "awk.def" |
28e13bf4 | 7 | #include "math.h" |
059b34c5 KM |
8 | #include "awk.h" |
9 | #include "stdio.h" | |
28e13bf4 | 10 | #include "fcntl.h" |
c01fc283 | 11 | #define RECSIZE BUFSIZ |
059b34c5 | 12 | |
ddec95fa | 13 | #define FILENUM NOFILE |
059b34c5 KM |
14 | struct |
15 | { | |
16 | FILE *fp; | |
1d8dcd58 | 17 | int type; |
059b34c5 KM |
18 | char *fname; |
19 | } files[FILENUM]; | |
20 | FILE *popen(); | |
21 | ||
22 | extern obj execute(), nodetoobj(), fieldel(), dopa2(), gettemp(); | |
23 | #define PA2NUM 29 | |
24 | int pairstack[PA2NUM], paircnt; | |
25 | node *winner = (node *)NULL; | |
26 | #define MAXTMP 20 | |
27 | cell tmps[MAXTMP]; | |
c48090b0 | 28 | static cell nullval ={EMPTY,EMPTY,0.0,NUM,0}; |
059b34c5 KM |
29 | obj true ={ OBOOL, BTRUE, 0 }; |
30 | obj false ={ OBOOL, BFALSE, 0 }; | |
31 | ||
32 | run() | |
33 | { | |
1d8dcd58 RC |
34 | register int i; |
35 | ||
059b34c5 | 36 | execute(winner); |
1d8dcd58 RC |
37 | |
38 | /* Wait for children to complete if output to a pipe. */ | |
39 | for (i=0; i<FILENUM; i++) | |
40 | if (files[i].fp && files[i].type == '|') | |
41 | pclose(files[i].fp); | |
059b34c5 KM |
42 | } |
43 | ||
44 | obj execute(u) node *u; | |
45 | { | |
46 | register obj (*proc)(); | |
47 | obj x; | |
48 | node *a; | |
49 | extern char *printname[]; | |
50 | ||
51 | if (u==(node *)NULL) | |
52 | return(true); | |
53 | for (a = u; ; a = a->nnext) { | |
54 | if (cantexec(a)) | |
55 | return(nodetoobj(a)); | |
56 | if (a->ntype==NPA2) | |
57 | proc=dopa2; | |
58 | else { | |
59 | if (notlegal(a->nobj)) | |
60 | error(FATAL, "illegal statement %o", a); | |
61 | proc = proctab[a->nobj-FIRSTTOKEN]; | |
62 | } | |
63 | x = (*proc)(a->narg,a->nobj); | |
64 | if (isfld(x)) fldbld(); | |
65 | if (isexpr(a)) | |
66 | return(x); | |
67 | /* a statement, goto next statement */ | |
68 | if (isjump(x)) | |
69 | return(x); | |
70 | if (a->nnext == (node *)NULL) | |
71 | return(x); | |
72 | tempfree(x); | |
73 | } | |
74 | } | |
75 | ||
76 | obj program(a, n) node **a; | |
77 | { | |
78 | obj x; | |
79 | ||
80 | if (a[0] != NULL) { | |
81 | x = execute(a[0]); | |
82 | if (isexit(x)) | |
83 | return(true); | |
84 | if (isjump(x)) | |
85 | error(FATAL, "unexpected break, continue or next"); | |
86 | tempfree(x); | |
87 | } | |
88 | while (getrec()) { | |
89 | x = execute(a[1]); | |
90 | if (isexit(x)) break; | |
91 | tempfree(x); | |
92 | } | |
93 | tempfree(x); | |
94 | if (a[2] != NULL) { | |
95 | x = execute(a[2]); | |
96 | if (isbreak(x) || isnext(x) || iscont(x)) | |
97 | error(FATAL, "unexpected break, continue or next"); | |
98 | tempfree(x); | |
99 | } | |
100 | return(true); | |
101 | } | |
102 | ||
103 | obj getline() | |
104 | { | |
105 | obj x; | |
106 | ||
107 | x = gettemp(); | |
108 | setfval(x.optr, (awkfloat) getrec()); | |
109 | return(x); | |
110 | } | |
111 | ||
112 | obj array(a,n) node **a; | |
113 | { | |
114 | obj x, y; | |
115 | extern obj arrayel(); | |
116 | ||
117 | x = execute(a[1]); | |
118 | y = arrayel(a[0], x); | |
119 | tempfree(x); | |
120 | return(y); | |
121 | } | |
122 | ||
123 | obj arrayel(a,b) node *a; obj b; | |
124 | { | |
125 | char *s; | |
126 | cell *x; | |
127 | int i; | |
128 | obj y; | |
129 | ||
130 | s = getsval(b.optr); | |
131 | x = (cell *) a; | |
132 | if (!(x->tval&ARR)) { | |
c48090b0 | 133 | strfree(x->sval); |
059b34c5 KM |
134 | x->tval &= ~STR; |
135 | x->tval |= ARR; | |
136 | x->sval = (char *) makesymtab(); | |
137 | } | |
138 | y.optr = setsymtab(s, tostring(""), 0.0, STR|NUM, x->sval); | |
139 | y.otype = OCELL; | |
140 | y.osub = CVAR; | |
141 | return(y); | |
142 | } | |
143 | ||
144 | obj matchop(a,n) node **a; | |
145 | { | |
146 | obj x; | |
147 | char *s; | |
148 | int i; | |
149 | ||
150 | x = execute(a[0]); | |
151 | if (isstr(x)) s = x.optr->sval; | |
152 | else s = getsval(x.optr); | |
153 | tempfree(x); | |
154 | i = match(a[1], s); | |
155 | if (n==MATCH && i==1 || n==NOTMATCH && i==0) | |
156 | return(true); | |
157 | else | |
158 | return(false); | |
159 | } | |
160 | ||
161 | obj boolop(a,n) node **a; | |
162 | { | |
163 | obj x, y; | |
164 | int i; | |
165 | ||
166 | x = execute(a[0]); | |
167 | i = istrue(x); | |
168 | tempfree(x); | |
169 | switch (n) { | |
170 | default: | |
171 | error(FATAL, "unknown boolean operator %d", n); | |
172 | case BOR: | |
173 | if (i) return(true); | |
174 | y = execute(a[1]); | |
175 | i = istrue(y); | |
176 | tempfree(y); | |
177 | if (i) return(true); | |
178 | else return(false); | |
179 | case AND: | |
180 | if ( !i ) return(false); | |
181 | y = execute(a[1]); | |
182 | i = istrue(y); | |
183 | tempfree(y); | |
184 | if (i) return(true); | |
185 | else return(false); | |
186 | case NOT: | |
187 | if (i) return(false); | |
188 | else return(true); | |
189 | } | |
190 | } | |
191 | ||
192 | obj relop(a,n) node **a; | |
193 | { | |
194 | int i; | |
195 | obj x, y; | |
196 | awkfloat j; | |
197 | ||
198 | x = execute(a[0]); | |
199 | y = execute(a[1]); | |
200 | if (x.optr->tval&NUM && y.optr->tval&NUM) { | |
201 | j = x.optr->fval - y.optr->fval; | |
202 | i = j<0? -1: (j>0? 1: 0); | |
203 | } else { | |
204 | i = strcmp(getsval(x.optr), getsval(y.optr)); | |
205 | } | |
206 | tempfree(x); | |
207 | tempfree(y); | |
208 | switch (n) { | |
209 | default: | |
210 | error(FATAL, "unknown relational operator %d", n); | |
211 | case LT: if (i<0) return(true); | |
212 | else return(false); | |
213 | case LE: if (i<=0) return(true); | |
214 | else return(false); | |
215 | case NE: if (i!=0) return(true); | |
216 | else return(false); | |
217 | case EQ: if (i==0) return(true); | |
218 | else return(false); | |
219 | case GE: if (i>=0) return(true); | |
220 | else return(false); | |
221 | case GT: if (i>0) return(true); | |
222 | else return(false); | |
223 | } | |
224 | } | |
225 | ||
226 | tempfree(a) obj a; | |
227 | { | |
228 | if (!istemp(a)) return; | |
c48090b0 | 229 | strfree(a.optr->sval); |
059b34c5 KM |
230 | a.optr->tval = 0; |
231 | } | |
232 | ||
233 | obj gettemp() | |
234 | { | |
235 | int i; | |
236 | obj x; | |
237 | ||
238 | for (i=0; i<MAXTMP; i++) | |
239 | if (tmps[i].tval==0) | |
240 | break; | |
241 | if (i==MAXTMP) | |
242 | error(FATAL, "out of temporaries in gettemp"); | |
243 | x.optr = &tmps[i]; | |
244 | tmps[i] = nullval; | |
245 | x.otype = OCELL; | |
246 | x.osub = CTEMP; | |
247 | return(x); | |
248 | } | |
249 | ||
250 | obj indirect(a,n) node **a; | |
251 | { | |
252 | obj x; | |
253 | int m; | |
254 | cell *fieldadr(); | |
255 | ||
256 | x = execute(a[0]); | |
257 | m = getfval(x.optr); | |
258 | tempfree(x); | |
259 | x.optr = fieldadr(m); | |
260 | x.otype = OCELL; | |
261 | x.osub = CFLD; | |
262 | return(x); | |
263 | } | |
264 | ||
265 | obj substr(a, nnn) node **a; | |
266 | { | |
267 | char *s, temp; | |
268 | obj x; | |
269 | int k, m, n; | |
270 | ||
271 | x = execute(a[0]); | |
272 | s = getsval(x.optr); | |
273 | k = strlen(s) + 1; | |
274 | tempfree(x); | |
275 | x = execute(a[1]); | |
276 | m = getfval(x.optr); | |
277 | if (m <= 0) | |
278 | m = 1; | |
279 | else if (m > k) | |
280 | m = k; | |
281 | tempfree(x); | |
282 | if (a[2] != nullstat) { | |
283 | x = execute(a[2]); | |
284 | n = getfval(x.optr); | |
285 | tempfree(x); | |
286 | } | |
287 | else | |
288 | n = k - 1; | |
289 | if (n < 0) | |
290 | n = 0; | |
291 | else if (n > k - m) | |
292 | n = k - m; | |
293 | dprintf("substr: m=%d, n=%d, s=%s\n", m, n, s); | |
294 | x = gettemp(); | |
295 | temp = s[n+m-1]; /* with thanks to John Linderman */ | |
296 | s[n+m-1] = '\0'; | |
297 | setsval(x.optr, s + m - 1); | |
298 | s[n+m-1] = temp; | |
299 | return(x); | |
300 | } | |
301 | ||
302 | obj sindex(a, nnn) node **a; | |
303 | { | |
304 | obj x; | |
305 | char *s1, *s2, *p1, *p2, *q; | |
306 | ||
307 | x = execute(a[0]); | |
308 | s1 = getsval(x.optr); | |
309 | tempfree(x); | |
310 | x = execute(a[1]); | |
311 | s2 = getsval(x.optr); | |
312 | tempfree(x); | |
313 | ||
314 | x = gettemp(); | |
315 | for (p1 = s1; *p1 != '\0'; p1++) { | |
316 | for (q=p1, p2=s2; *p2 != '\0' && *q == *p2; q++, p2++) | |
317 | ; | |
318 | if (*p2 == '\0') { | |
319 | setfval(x.optr, (awkfloat) (p1 - s1 + 1)); /* origin 1 */ | |
320 | return(x); | |
321 | } | |
322 | } | |
323 | setfval(x.optr, 0.0); | |
324 | return(x); | |
325 | } | |
326 | ||
327 | char *format(s,a) char *s; node *a; | |
328 | { | |
329 | char *buf, *p, fmt[200], *t, *os; | |
330 | obj x; | |
331 | int flag = 0; | |
332 | awkfloat xf; | |
333 | ||
334 | os = s; | |
335 | p = buf = (char *)malloc(RECSIZE); | |
336 | while (*s) { | |
337 | if (*s != '%') { | |
338 | *p++ = *s++; | |
339 | continue; | |
340 | } | |
341 | if (*(s+1) == '%') { | |
342 | *p++ = '%'; | |
343 | s += 2; | |
344 | continue; | |
345 | } | |
346 | for (t=fmt; (*t++ = *s) != '\0'; s++) | |
347 | if (*s >= 'a' && *s <= 'z' && *s != 'l') | |
348 | break; | |
349 | *t = '\0'; | |
350 | if (t >= fmt + sizeof(fmt)) | |
351 | error(FATAL, "format item %.20s... too long", os); | |
352 | switch (*s) { | |
353 | case 'f': case 'e': case 'g': | |
354 | flag = 1; | |
355 | break; | |
356 | case 'd': | |
357 | flag = 2; | |
358 | if(*(s-1) == 'l') break; | |
359 | *(t-1) = 'l'; | |
360 | *t = 'd'; | |
361 | *++t = '\0'; | |
362 | break; | |
363 | case 'o': case 'x': | |
364 | flag = *(s-1)=='l' ? 2 : 3; | |
365 | break; | |
366 | case 'c': | |
367 | flag = 3; | |
368 | break; | |
369 | case 's': | |
370 | flag = 4; | |
371 | break; | |
372 | default: | |
373 | flag = 0; | |
374 | break; | |
375 | } | |
376 | if (flag == 0) { | |
6521d648 | 377 | (void)sprintf(p, "%s", fmt); |
059b34c5 KM |
378 | p += strlen(p); |
379 | continue; | |
380 | } | |
381 | if (a == NULL) | |
382 | error(FATAL, "not enough arguments in printf(%s)", os); | |
383 | x = execute(a); | |
384 | a = a->nnext; | |
385 | if (flag != 4) /* watch out for converting to numbers! */ | |
386 | xf = getfval(x.optr); | |
6521d648 KB |
387 | if (flag==1) (void)sprintf(p, fmt, xf); |
388 | else if (flag==2) (void)sprintf(p, fmt, (long)xf); | |
389 | else if (flag==3) (void)sprintf(p, fmt, (int)xf); | |
390 | else if (flag==4) (void)sprintf(p, fmt, x.optr->sval==NULL ? "" : getsval(x.optr)); | |
059b34c5 KM |
391 | tempfree(x); |
392 | p += strlen(p); | |
393 | s++; | |
394 | } | |
395 | *p = '\0'; | |
396 | return(buf); | |
397 | } | |
398 | ||
399 | obj asprintf(a,n) node **a; | |
400 | { | |
401 | obj x; | |
402 | node *y; | |
403 | char *s; | |
404 | ||
405 | y = a[0]->nnext; | |
406 | x = execute(a[0]); | |
407 | s = format(getsval(x.optr), y); | |
408 | tempfree(x); | |
409 | x = gettemp(); | |
410 | x.optr->sval = s; | |
411 | x.optr->tval = STR; | |
412 | return(x); | |
413 | } | |
414 | ||
415 | obj arith(a,n) node **a; | |
416 | { | |
417 | awkfloat i,j; | |
418 | obj x,y,z; | |
419 | ||
420 | x = execute(a[0]); | |
421 | i = getfval(x.optr); | |
422 | tempfree(x); | |
423 | if (n != UMINUS) { | |
424 | y = execute(a[1]); | |
425 | j = getfval(y.optr); | |
426 | tempfree(y); | |
427 | } | |
428 | z = gettemp(); | |
429 | switch (n) { | |
430 | default: | |
431 | error(FATAL, "illegal arithmetic operator %d", n); | |
432 | case ADD: | |
433 | i += j; | |
434 | break; | |
435 | case MINUS: | |
436 | i -= j; | |
437 | break; | |
438 | case MULT: | |
439 | i *= j; | |
440 | break; | |
441 | case DIVIDE: | |
442 | if (j == 0) | |
443 | error(FATAL, "division by zero"); | |
444 | i /= j; | |
445 | break; | |
446 | case MOD: | |
447 | if (j == 0) | |
448 | error(FATAL, "division by zero"); | |
449 | i = i - j*(long)(i/j); | |
450 | break; | |
451 | case UMINUS: | |
452 | i = -i; | |
453 | break; | |
454 | } | |
455 | setfval(z.optr, i); | |
456 | return(z); | |
457 | } | |
458 | ||
459 | obj incrdecr(a, n) node **a; | |
460 | { | |
461 | obj x, z; | |
462 | int k; | |
463 | awkfloat xf; | |
464 | ||
465 | x = execute(a[0]); | |
466 | xf = getfval(x.optr); | |
467 | k = (n == PREINCR || n == POSTINCR) ? 1 : -1; | |
468 | if (n == PREINCR || n == PREDECR) { | |
469 | setfval(x.optr, xf + k); | |
470 | return(x); | |
471 | } | |
472 | z = gettemp(); | |
473 | setfval(z.optr, xf); | |
474 | setfval(x.optr, xf + k); | |
475 | tempfree(x); | |
476 | return(z); | |
477 | } | |
478 | ||
479 | ||
480 | obj assign(a,n) node **a; | |
481 | { | |
482 | obj x, y; | |
483 | awkfloat xf, yf; | |
484 | ||
485 | x = execute(a[0]); | |
486 | y = execute(a[1]); | |
487 | if (n == ASSIGN) { /* ordinary assignment */ | |
488 | if ((y.optr->tval & (STR|NUM)) == (STR|NUM)) { | |
489 | setsval(x.optr, y.optr->sval); | |
490 | x.optr->fval = y.optr->fval; | |
491 | x.optr->tval |= NUM; | |
492 | } | |
493 | else if (y.optr->tval & STR) | |
494 | setsval(x.optr, y.optr->sval); | |
495 | else if (y.optr->tval & NUM) | |
496 | setfval(x.optr, y.optr->fval); | |
497 | tempfree(y); | |
498 | return(x); | |
499 | } | |
500 | xf = getfval(x.optr); | |
501 | yf = getfval(y.optr); | |
502 | switch (n) { | |
503 | case ADDEQ: | |
504 | xf += yf; | |
505 | break; | |
506 | case SUBEQ: | |
507 | xf -= yf; | |
508 | break; | |
509 | case MULTEQ: | |
510 | xf *= yf; | |
511 | break; | |
512 | case DIVEQ: | |
513 | if (yf == 0) | |
514 | error(FATAL, "division by zero"); | |
515 | xf /= yf; | |
516 | break; | |
517 | case MODEQ: | |
518 | if (yf == 0) | |
519 | error(FATAL, "division by zero"); | |
520 | xf = xf - yf*(long)(xf/yf); | |
521 | break; | |
522 | default: | |
523 | error(FATAL, "illegal assignment operator %d", n); | |
524 | break; | |
525 | } | |
526 | tempfree(y); | |
527 | setfval(x.optr, xf); | |
528 | return(x); | |
529 | } | |
530 | ||
531 | obj cat(a,q) node **a; | |
532 | { | |
533 | obj x,y,z; | |
534 | int n1, n2; | |
535 | char *s; | |
536 | ||
537 | x = execute(a[0]); | |
538 | y = execute(a[1]); | |
539 | getsval(x.optr); | |
540 | getsval(y.optr); | |
541 | n1 = strlen(x.optr->sval); | |
542 | n2 = strlen(y.optr->sval); | |
543 | s = (char *) malloc(n1 + n2 + 1); | |
544 | strcpy(s, x.optr->sval); | |
545 | strcpy(s+n1, y.optr->sval); | |
546 | tempfree(y); | |
547 | z = gettemp(); | |
548 | z.optr->sval = s; | |
549 | z.optr->tval = STR; | |
550 | tempfree(x); | |
551 | return(z); | |
552 | } | |
553 | ||
554 | obj pastat(a,n) node **a; | |
555 | { | |
556 | obj x; | |
557 | ||
558 | if (a[0]==nullstat) | |
559 | x = true; | |
560 | else | |
561 | x = execute(a[0]); | |
562 | if (istrue(x)) { | |
563 | tempfree(x); | |
564 | x = execute(a[1]); | |
565 | } | |
566 | return(x); | |
567 | } | |
568 | ||
569 | obj dopa2(a,n) node **a; | |
570 | { | |
571 | obj x; | |
572 | ||
573 | if (pairstack[n]==0) { | |
574 | x = execute(a[0]); | |
575 | if (istrue(x)) | |
576 | pairstack[n] = 1; | |
577 | tempfree(x); | |
578 | } | |
579 | if (pairstack[n] == 1) { | |
580 | x = execute(a[1]); | |
581 | if (istrue(x)) | |
582 | pairstack[n] = 0; | |
583 | tempfree(x); | |
584 | x = execute(a[2]); | |
585 | return(x); | |
586 | } | |
587 | return(false); | |
588 | } | |
589 | ||
590 | obj aprintf(a,n) node **a; | |
591 | { | |
592 | obj x; | |
593 | ||
594 | x = asprintf(a,n); | |
595 | if (a[1]==NULL) { | |
596 | printf("%s", x.optr->sval); | |
597 | tempfree(x); | |
598 | return(true); | |
599 | } | |
600 | redirprint(x.optr->sval, (int)a[1], a[2]); | |
601 | return(x); | |
602 | } | |
603 | ||
604 | obj split(a,nnn) node **a; | |
605 | { | |
606 | obj x; | |
607 | cell *ap; | |
608 | register char *s, *p; | |
609 | char *t, temp, num[5]; | |
610 | register int sep; | |
611 | int n, flag; | |
612 | ||
613 | x = execute(a[0]); | |
614 | s = getsval(x.optr); | |
615 | tempfree(x); | |
616 | if (a[2] == nullstat) | |
617 | sep = **FS; | |
618 | else { | |
619 | x = execute(a[2]); | |
620 | sep = getsval(x.optr)[0]; | |
621 | tempfree(x); | |
622 | } | |
623 | ap = (cell *) a[1]; | |
624 | freesymtab(ap); | |
625 | dprintf("split: s=|%s|, a=%s, sep=|%c|\n", s, ap->nval, sep); | |
626 | ap->tval &= ~STR; | |
627 | ap->tval |= ARR; | |
628 | ap->sval = (char *) makesymtab(); | |
629 | ||
630 | n = 0; | |
631 | if (sep == ' ') | |
632 | for (n = 0; ; ) { | |
633 | while (*s == ' ' || *s == '\t' || *s == '\n') | |
634 | s++; | |
635 | if (*s == 0) | |
636 | break; | |
637 | n++; | |
638 | t = s; | |
639 | do | |
640 | s++; | |
641 | while (*s!=' ' && *s!='\t' && *s!='\n' && *s!='\0'); | |
642 | temp = *s; | |
643 | *s = '\0'; | |
6521d648 | 644 | (void)sprintf(num, "%d", n); |
059b34c5 KM |
645 | if (isnumber(t)) |
646 | setsymtab(num, tostring(t), atof(t), STR|NUM, ap->sval); | |
647 | else | |
648 | setsymtab(num, tostring(t), 0.0, STR, ap->sval); | |
649 | *s = temp; | |
650 | if (*s != 0) | |
651 | s++; | |
652 | } | |
653 | else if (*s != 0) | |
654 | for (;;) { | |
655 | n++; | |
656 | t = s; | |
657 | while (*s != sep && *s != '\n' && *s != '\0') | |
658 | s++; | |
659 | temp = *s; | |
660 | *s = '\0'; | |
6521d648 | 661 | (void)sprintf(num, "%d", n); |
059b34c5 KM |
662 | if (isnumber(t)) |
663 | setsymtab(num, tostring(t), atof(t), STR|NUM, ap->sval); | |
664 | else | |
665 | setsymtab(num, tostring(t), 0.0, STR, ap->sval); | |
666 | *s = temp; | |
667 | if (*s++ == 0) | |
668 | break; | |
669 | } | |
670 | x = gettemp(); | |
671 | x.optr->tval = NUM; | |
672 | x.optr->fval = n; | |
673 | return(x); | |
674 | } | |
675 | ||
676 | obj ifstat(a,n) node **a; | |
677 | { | |
678 | obj x; | |
679 | ||
680 | x = execute(a[0]); | |
681 | if (istrue(x)) { | |
682 | tempfree(x); | |
683 | x = execute(a[1]); | |
684 | } | |
685 | else if (a[2] != nullstat) { | |
686 | tempfree(x); | |
687 | x = execute(a[2]); | |
688 | } | |
689 | return(x); | |
690 | } | |
691 | ||
692 | obj whilestat(a,n) node **a; | |
693 | { | |
694 | obj x; | |
695 | ||
696 | for (;;) { | |
697 | x = execute(a[0]); | |
698 | if (!istrue(x)) return(x); | |
699 | tempfree(x); | |
700 | x = execute(a[1]); | |
701 | if (isbreak(x)) { | |
702 | x = true; | |
703 | return(x); | |
704 | } | |
705 | if (isnext(x) || isexit(x)) | |
706 | return(x); | |
707 | tempfree(x); | |
708 | } | |
709 | } | |
710 | ||
711 | obj forstat(a,n) node **a; | |
712 | { | |
713 | obj x; | |
714 | ||
715 | tempfree(execute(a[0])); | |
716 | for (;;) { | |
717 | if (a[1]!=nullstat) { | |
718 | x = execute(a[1]); | |
719 | if (!istrue(x)) return(x); | |
720 | else tempfree(x); | |
721 | } | |
722 | x = execute(a[3]); | |
723 | if (isbreak(x)) { /* turn off break */ | |
724 | x = true; | |
725 | return(x); | |
726 | } | |
727 | if (isnext(x) || isexit(x)) | |
728 | return(x); | |
729 | tempfree(x); | |
730 | tempfree(execute(a[2])); | |
731 | } | |
732 | } | |
733 | ||
734 | obj instat(a, n) node **a; | |
735 | { | |
736 | cell *vp, *arrayp, *cp, **tp; | |
737 | obj x; | |
738 | int i; | |
739 | ||
740 | vp = (cell *) a[0]; | |
741 | arrayp = (cell *) a[1]; | |
742 | if (!(arrayp->tval & ARR)) | |
743 | error(FATAL, "%s is not an array", arrayp->nval); | |
744 | tp = (cell **) arrayp->sval; | |
745 | for (i = 0; i < MAXSYM; i++) { /* this routine knows too much */ | |
746 | for (cp = tp[i]; cp != NULL; cp = cp->nextval) { | |
747 | setsval(vp, cp->nval); | |
748 | x = execute(a[2]); | |
749 | if (isbreak(x)) { | |
750 | x = true; | |
751 | return(x); | |
752 | } | |
753 | if (isnext(x) || isexit(x)) | |
754 | return(x); | |
755 | tempfree(x); | |
756 | } | |
757 | } | |
c01fc283 | 758 | return (true); |
059b34c5 KM |
759 | } |
760 | ||
761 | obj jump(a,n) node **a; | |
762 | { | |
763 | obj x, y; | |
764 | ||
765 | x.otype = OJUMP; | |
766 | switch (n) { | |
767 | default: | |
768 | error(FATAL, "illegal jump type %d", n); | |
769 | break; | |
770 | case EXIT: | |
771 | if (a[0] != 0) { | |
772 | y = execute(a[0]); | |
773 | errorflag = getfval(y.optr); | |
774 | } | |
775 | x.osub = JEXIT; | |
776 | break; | |
777 | case NEXT: | |
778 | x.osub = JNEXT; | |
779 | break; | |
780 | case BREAK: | |
781 | x.osub = JBREAK; | |
782 | break; | |
783 | case CONTINUE: | |
784 | x.osub = JCONT; | |
785 | break; | |
786 | } | |
787 | return(x); | |
788 | } | |
789 | ||
790 | obj fncn(a,n) node **a; | |
791 | { | |
792 | obj x; | |
793 | awkfloat u; | |
794 | int t; | |
795 | ||
796 | t = (int) a[0]; | |
797 | x = execute(a[1]); | |
798 | if (t == FLENGTH) | |
799 | u = (awkfloat) strlen(getsval(x.optr)); | |
800 | else if (t == FLOG) | |
801 | u = log(getfval(x.optr)); | |
802 | else if (t == FINT) | |
803 | u = (awkfloat) (long) getfval(x.optr); | |
804 | else if (t == FEXP) | |
805 | u = exp(getfval(x.optr)); | |
806 | else if (t == FSQRT) | |
807 | u = sqrt(getfval(x.optr)); | |
808 | else | |
809 | error(FATAL, "illegal function type %d", t); | |
810 | tempfree(x); | |
811 | x = gettemp(); | |
812 | setfval(x.optr, u); | |
813 | return(x); | |
814 | } | |
815 | ||
816 | obj print(a,n) node **a; | |
817 | { | |
818 | register node *x; | |
819 | obj y; | |
820 | char s[RECSIZE]; | |
821 | ||
822 | s[0] = '\0'; | |
823 | for (x=a[0]; x!=NULL; x=x->nnext) { | |
824 | y = execute(x); | |
825 | strcat(s, getsval(y.optr)); | |
826 | tempfree(y); | |
827 | if (x->nnext==NULL) | |
828 | strcat(s, *ORS); | |
829 | else | |
830 | strcat(s, *OFS); | |
831 | } | |
832 | if (strlen(s) >= RECSIZE) | |
833 | error(FATAL, "string %.20s ... too long to print", s); | |
834 | if (a[1]==nullstat) { | |
835 | printf("%s", s); | |
836 | return(true); | |
837 | } | |
838 | redirprint(s, (int)a[1], a[2]); | |
839 | return(false); | |
840 | } | |
841 | ||
842 | obj nullproc() {} | |
843 | ||
844 | obj nodetoobj(a) node *a; | |
845 | { | |
846 | obj x; | |
847 | ||
848 | x.optr = (cell *) a->nobj; | |
849 | x.otype = OCELL; | |
850 | x.osub = a->subtype; | |
851 | if (isfld(x)) fldbld(); | |
852 | return(x); | |
853 | } | |
854 | ||
855 | redirprint(s, a, b) char *s; node *b; | |
856 | { | |
857 | register int i; | |
858 | obj x; | |
859 | ||
860 | x = execute(b); | |
861 | getsval(x.optr); | |
862 | for (i=0; i<FILENUM; i++) | |
863 | if (files[i].fp && strcmp(x.optr->sval, files[i].fname) == 0) | |
864 | goto doit; | |
865 | for (i=0; i<FILENUM; i++) | |
866 | if (files[i].fp == 0) | |
867 | break; | |
868 | if (i >= FILENUM) | |
869 | error(FATAL, "too many output files %d", i); | |
870 | if (a == '|') /* a pipe! */ | |
871 | files[i].fp = popen(x.optr->sval, "w"); | |
872 | else if (a == APPEND) | |
873 | files[i].fp = fopen(x.optr->sval, "a"); | |
874 | else | |
875 | files[i].fp = fopen(x.optr->sval, "w"); | |
876 | if (files[i].fp == NULL) | |
877 | error(FATAL, "can't open file %s", x.optr->sval); | |
28e13bf4 KB |
878 | if (fcntl(fileno(files[i].fp), F_SETFD, 1) < 0) |
879 | error(FATAL, "close on exec failure"); | |
059b34c5 | 880 | files[i].fname = tostring(x.optr->sval); |
1d8dcd58 | 881 | files[i].type = a; |
059b34c5 KM |
882 | doit: |
883 | fprintf(files[i].fp, "%s", s); | |
884 | #ifndef gcos | |
885 | fflush(files[i].fp); /* in case someone is waiting for the output */ | |
886 | #endif | |
887 | tempfree(x); | |
888 | } |