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1 | /* -*-c-*- |
2 | * |
661c4bdc |
3 | * $Id: rxglue.c,v 1.2 2002/01/30 09:22:48 mdw Exp $ |
2ec1e693 |
4 | * |
5 | * REXX glue for C core functionality |
6 | * |
7 | * (c) 2001 Mark Wooding |
8 | */ |
9 | |
10 | /*----- Licensing notice --------------------------------------------------* |
11 | * |
12 | * This file is part of Jog: Programming for a jogging machine. |
13 | * |
14 | * Jog is free software; you can redistribute it and/or modify |
15 | * it under the terms of the GNU General Public License as published by |
16 | * the Free Software Foundation; either version 2 of the License, or |
17 | * (at your option) any later version. |
18 | * |
19 | * Jog is distributed in the hope that it will be useful, |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
22 | * GNU General Public License for more details. |
23 | * |
24 | * You should have received a copy of the GNU General Public License |
25 | * along with Jog; if not, write to the Free Software Foundation, |
26 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
27 | */ |
28 | |
29 | /*----- Revision history --------------------------------------------------* |
30 | * |
31 | * $Log: rxglue.c,v $ |
661c4bdc |
32 | * Revision 1.2 2002/01/30 09:22:48 mdw |
33 | * Use memory-allocation functions provided by the REXX interpreter. |
34 | * Now that configuration can be applied after initialization, allow |
35 | * @txconf@ to set parameters. Make @txsend@ add a newline to its output, |
36 | * unless forbidden. |
37 | * |
2ec1e693 |
38 | * Revision 1.1 2002/01/25 19:34:45 mdw |
39 | * Initial revision |
40 | * |
41 | */ |
42 | |
43 | /*----- Header files ------------------------------------------------------*/ |
44 | |
45 | #ifdef HAVE_CONFIG_H |
46 | # include "config.h" |
47 | #endif |
48 | |
49 | #include <ctype.h> |
50 | #include <errno.h> |
51 | #include <limits.h> |
52 | #include <stdarg.h> |
53 | #include <stdio.h> |
54 | #include <stdlib.h> |
55 | #include <string.h> |
56 | #include <time.h> |
57 | |
58 | #include <sys/types.h> |
59 | #include <sys/time.h> |
60 | #include <unistd.h> |
61 | |
62 | #define INCL_RXFUNC |
63 | #define RX_STRONGTYPING |
64 | #include <rexxsaa.h> |
65 | |
66 | #include <mLib/alloc.h> |
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67 | #include <mLib/exc.h> |
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68 | #include <mLib/dstr.h> |
69 | |
70 | #include "err.h" |
71 | #include "rxglue.h" |
72 | #include "txport.h" |
73 | |
74 | /*----- Static variables --------------------------------------------------*/ |
75 | |
76 | static txport *tx = 0; |
77 | |
661c4bdc |
78 | /*----- Memory allocation functions ---------------------------------------*/ |
79 | |
80 | static void *rx_alloc(size_t sz) |
81 | { |
82 | void *p = RexxAllocateMemory(sz); |
83 | if (!p) |
84 | THROW(EXC_NOMEM); |
85 | return (p); |
86 | } |
87 | |
88 | static void rx_free(void *p) |
89 | { |
90 | RexxFreeMemory(p); |
91 | } |
92 | |
2ec1e693 |
93 | /*----- Conversion functions ----------------------------------------------*/ |
94 | |
95 | /* --- @rxs_putm@ --- * |
96 | * |
97 | * Arguments: @RXSTRING *x@ = pointer to REXX string structure |
98 | * For @rxs_putm@: |
99 | * @const void *p@ = pointer to data block |
100 | * @size_t sz@ = size of data |
101 | * For @rxs_putd@: |
102 | * @const dstr *d@ = pointer to source string |
103 | * For @rxs_putf@ and @rxs_vputf@: |
104 | * @const char *m@ = message format string |
105 | * |
106 | * Returns: --- |
107 | * |
108 | * Use: Stashes some text in an @RXSTRING@, overwriting whatever was |
109 | * there before. We assume that the previous contents don't |
110 | * require freeing. |
111 | */ |
112 | |
113 | #define RXS_PUTM(x, p, sz) do { \ |
114 | RXSTRING *_x = (x); \ |
115 | const void *_p = (p); \ |
116 | size_t _sz = (sz); \ |
117 | if (!_x->strptr || _x->strlength < _sz) \ |
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118 | _x->strptr = rx_alloc(_sz); \ |
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119 | memcpy(_x->strptr, _p, _sz); \ |
120 | _x->strlength = _sz; \ |
121 | } while (0) |
122 | |
123 | static void rxs_putm(RXSTRING *x, const void *p, size_t sz) |
124 | { |
125 | RXS_PUTM(x, p, sz); |
126 | } |
127 | |
128 | #define RXS_PUTD(x, d) do { \ |
129 | dstr *_d = (d); \ |
130 | RXS_PUTM((x), _d->buf, _d->len); \ |
131 | } while (0) |
132 | |
133 | static void rxs_putd(RXSTRING *x, dstr *d) { RXS_PUTD(x, d); } |
134 | |
135 | static void rxs_vputf(RXSTRING *x, const char *m, va_list *ap) |
136 | { |
137 | dstr d = DSTR_INIT; |
138 | dstr_vputf(&d, m, ap); |
139 | RXS_PUTD(x, &d); |
140 | DDESTROY(&d); |
141 | } |
142 | |
143 | static void rxs_putf(RXSTRING *x, const char *m, ...) |
144 | { |
145 | va_list ap; |
146 | dstr d = DSTR_INIT; |
147 | va_start(ap, m); |
148 | dstr_vputf(&d, m, &ap); |
149 | RXS_PUTD(x, &d); |
150 | va_end(ap); |
151 | DDESTROY(&d); |
152 | } |
153 | |
154 | /* --- @rxs_get@ --- * |
155 | * |
156 | * Arguments: @const RXSTRING *x@ = pointer to a REXX string |
157 | * @dstr *d@ = where to put it |
158 | * |
159 | * Returns: --- |
160 | * |
161 | * Use: Pulls a REXX string out and puts it in a dynamic string. |
162 | */ |
163 | |
164 | #define RXS_GET(x, d) do { \ |
165 | const RXSTRING *_x = (x); \ |
166 | dstr *_dd = (d); \ |
167 | DPUTM(_dd, _x->strptr, _x->strlength); \ |
168 | DPUTZ(_dd); \ |
169 | } while (0) |
170 | |
171 | static void rxs_get(const RXSTRING *x, dstr *d) { RXS_GET(x, d); } |
172 | |
173 | /* --- @rxs_tol@ --- * |
174 | * |
175 | * Arguments: @const RXSTRING *x@ = pointer to a REXX string |
176 | * @long *ii@ = where to put the answer |
177 | * |
178 | * Returns: Zero on success, or nonzero on error. |
179 | * |
180 | * Use: Fetches an integer from a REXX string. This doesn't cope |
181 | * with multiprecision integers or similar silliness. |
182 | */ |
183 | |
184 | static int rxs_tol(const RXSTRING *x, long *ii) |
185 | { |
186 | long i = 0; |
187 | const char *p = x->strptr, *l = p + x->strlength; |
188 | unsigned f = 0; |
189 | |
190 | #define f_neg 1u |
191 | #define f_ok 2u |
192 | |
193 | #define MINR (LONG_MIN/10) |
194 | #define MIND (LONG_MIN%10) |
195 | |
196 | while (p < l && isspace((unsigned char)*p)) |
197 | p++; |
198 | if (p >= l) |
199 | return (-1); |
200 | if (*p == '+') |
201 | p++; |
202 | else if (*p == '-') { |
203 | f |= f_neg; |
204 | p++; |
205 | } |
206 | while (p < l && isspace((unsigned char)*p)) |
207 | p++; |
208 | while (p < l && isdigit((unsigned char)*p)) { |
209 | int j = *p++ - '0'; |
210 | if (i < MINR || (i == MINR && -j < MIND)) |
211 | return (-1); |
212 | i = (i * 10) - j; |
213 | f |= f_ok; |
214 | } |
215 | while (p < l && isspace((unsigned char)*p)) |
216 | p++; |
217 | if (p < l || !(f & f_ok)) |
218 | return (-1); |
219 | if (!(f & f_neg)) { |
220 | if (i < -LONG_MAX) |
221 | return (-1); |
222 | i = -i; |
223 | } |
224 | *ii = i; |
225 | return (0); |
226 | |
227 | #undef MINR |
228 | #undef MIND |
229 | |
230 | #undef f_neg |
231 | #undef f_ok |
232 | } |
233 | |
234 | /* --- @rxs_block@ --- * |
235 | * |
236 | * Arguments: @const RXSTRING *x@ = a REXX string |
237 | * @unsigned long *t@ = where to put the block spec |
238 | * |
239 | * Returns: Zero if OK, nonzero on error. |
240 | * |
241 | * Use: Picks out a blockingness spec. |
242 | */ |
243 | |
244 | static int rxs_block(const RXSTRING *x, unsigned long *t) |
245 | { |
246 | long i; |
247 | |
248 | if (!x->strptr || x->strlength < 1) |
249 | return (-1); |
250 | switch (x->strptr[0]) { |
251 | case 'f': |
252 | case 'F': |
253 | *t = FOREVER; |
254 | break; |
255 | default: |
256 | if (rxs_tol(x, &i) || i < 0) |
257 | return (-1); |
258 | *t = i; |
259 | break; |
260 | } |
261 | return (0); |
262 | } |
263 | |
264 | /*----- REXX functions ----------------------------------------------------*/ |
265 | |
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266 | static APIRET APIENTRY rxfn_test(const char *fn, ULONG ac, RXSTRING *av, |
267 | const char *sn, RXSTRING *r) |
2ec1e693 |
268 | { |
269 | ULONG i; |
270 | |
271 | printf("test entry\n" |
272 | " fn = `%s'\n", fn); |
273 | for (i = 0; i < ac; i++) { |
274 | long l; |
275 | |
276 | printf(" av[%lu] = `", i); |
277 | fwrite(av[i].strptr, 1, av[i].strlength, stdout); |
278 | if (rxs_tol(&av[i], &l)) |
279 | printf("'\n"); |
280 | else |
281 | printf("' (%ld)\n", l); |
282 | } |
661c4bdc |
283 | printf("tx = `%s'; f = `%s'; c = `%s'.\n", txname, txfile, txconf); |
2ec1e693 |
284 | rxs_putf(r, "function `%s' completed ok", fn); |
285 | return (0); |
286 | } |
287 | |
288 | /* --- @txname()@ --- |
289 | * |
290 | * Arguments: --- |
291 | * |
292 | * Returns: The currently-selected transport name. |
293 | */ |
294 | |
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295 | static APIRET APIENTRY rxfn_txname(const char *fn, ULONG ac, RXSTRING *av, |
296 | const char *sn, RXSTRING *r) |
2ec1e693 |
297 | { |
298 | if (ac) |
299 | return (-1); |
300 | rxs_putf(r, "%s", txname); |
301 | return (0); |
302 | } |
303 | |
304 | /* --- @txfile()@ --- |
305 | * |
306 | * Arguments: --- |
307 | * |
308 | * Returns: The currently-selected transport filename. |
309 | */ |
310 | |
661c4bdc |
311 | static APIRET APIENTRY rxfn_txfile(const char *fn, ULONG ac, RXSTRING *av, |
312 | const char *sn, RXSTRING *r) |
2ec1e693 |
313 | { |
314 | if (ac) |
315 | return (-1); |
316 | rxs_putf(r, "%s", txfile ? txfile : ""); |
317 | return (0); |
318 | } |
319 | |
661c4bdc |
320 | /* --- @txconf([CONFIG])@ --- |
2ec1e693 |
321 | * |
661c4bdc |
322 | * Arguments: @CONFIG@ = optional string to set |
2ec1e693 |
323 | * |
324 | * Returns: The currently-selected transport configuration string. |
325 | */ |
326 | |
661c4bdc |
327 | static APIRET APIENTRY rxfn_txconf(const char *fn, ULONG ac, RXSTRING *av, |
328 | const char *sn, RXSTRING *r) |
2ec1e693 |
329 | { |
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330 | if (ac > 1) |
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331 | return (-1); |
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332 | if (ac > 0 && av[0].strptr) { |
333 | dstr d = DSTR_INIT; |
334 | int rc; |
335 | if (!tx) |
336 | return (-1); |
337 | rxs_get(&av[0], &d); |
338 | rc = tx_configure(tx, d.buf); |
339 | dstr_destroy(&d); |
340 | if (rc) |
341 | return (-1); |
342 | } |
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343 | rxs_putf(r, "%s", txconf ? txconf : ""); |
344 | return (0); |
345 | } |
346 | |
347 | /* --- @txinit([NAME], [FILE], [CONFIG])@ --- |
348 | * |
349 | * Arguments: @NAME@ = transport name to select |
350 | * @FILE@ = transport filename |
351 | * @CONFIG@ = transport configuration string |
352 | * |
353 | * Returns: --- |
354 | * |
355 | * Use: Initializes a transport using the given settings. Omitted |
356 | * arguments are filled in from the command line, or internal |
357 | * defaults. |
358 | */ |
359 | |
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360 | static APIRET APIENTRY rxfn_txinit(const char *fn, ULONG ac, RXSTRING *av, |
361 | const char *sn, RXSTRING *r) |
2ec1e693 |
362 | { |
363 | const char *n = txname, *f = txfile, *c = txconf; |
364 | dstr dn = DSTR_INIT, df = DSTR_INIT, dc = DSTR_INIT; |
365 | |
366 | if (tx) |
367 | return (-1); |
368 | if (ac > 3) |
369 | return (-1); |
370 | if (ac >= 1 && av[0].strptr) { |
371 | rxs_get(&av[0], &dn); |
372 | n = dn.buf; |
373 | } |
374 | if (ac >= 2 && av[1].strptr) { |
375 | rxs_get(&av[1], &df); |
376 | f = df.buf; |
377 | } |
378 | if (ac >= 3 && av[2].strptr) { |
661c4bdc |
379 | rxs_get(&av[2], &dc); |
2ec1e693 |
380 | c = dc.buf; |
381 | } |
382 | tx = tx_create(n, f, c); |
383 | dstr_destroy(&dn); |
384 | dstr_destroy(&df); |
385 | dstr_destroy(&dc); |
386 | if (!tx) |
387 | return (-1); |
388 | return (0); |
389 | } |
390 | |
661c4bdc |
391 | /* --- @txsend(STRING, [OPTION])@ --- * |
2ec1e693 |
392 | * |
393 | * Arguments: @STRING@ = string to send |
661c4bdc |
394 | * @OPTION@ = `l' or `n' (for `linebreak' or `nolinebreak') |
2ec1e693 |
395 | * |
396 | * Returns: --- |
397 | * |
398 | * Use: Sends a string (exactly as written) to the transport. |
399 | */ |
400 | |
661c4bdc |
401 | static APIRET APIENTRY rxfn_txsend(const char *fn, ULONG ac, RXSTRING *av, |
402 | const char *sn, RXSTRING *r) |
2ec1e693 |
403 | { |
661c4bdc |
404 | if ((ac != 1 && ac != 2) || !tx || !av[0].strptr) |
2ec1e693 |
405 | return (-1); |
406 | tx_write(tx, av[0].strptr, av[0].strlength); |
661c4bdc |
407 | if (ac == 1 || !av[1].strptr || !av[1].strlength || |
408 | av[1].strptr[0] == 'l' || av[1].strptr[0] == 'L') |
409 | tx_newline(tx); |
2ec1e693 |
410 | return (0); |
411 | } |
412 | |
413 | /* --- @txrecv([MILLIS])@ --- * |
414 | * |
415 | * Arguments: @MILLIS@ = how long (in milliseconds) to wait, or `forever' |
416 | * |
417 | * Returns: The string read (may be null if nothing available -- sorry). |
418 | * |
419 | * Use: Reads the next line from the transport. If @MILLIS@ is an |
420 | * integer, then give up after that many milliseconds of |
421 | * waiting; if it is `forever' (or anything beginning with an |
422 | * `f') then don't give up. The default is to wait forever. |
423 | */ |
424 | |
661c4bdc |
425 | static APIRET APIENTRY rxfn_txrecv(const char *fn, ULONG ac, RXSTRING *av, |
426 | const char *sn, RXSTRING *r) |
2ec1e693 |
427 | { |
428 | txline *l; |
429 | unsigned long t = FOREVER; |
430 | |
431 | if (ac > 1 || !tx) |
432 | return (-1); |
433 | if (ac >= 1 && rxs_block(&av[0], &t)) |
434 | return (-1); |
435 | |
436 | l = tx_read(tx, t); |
437 | if (!l) |
438 | r->strlength = 0; |
439 | else { |
440 | rxs_putm(r, l->s, l->len); |
441 | tx_freeline(l); |
442 | } |
443 | return (0); |
444 | } |
445 | |
446 | /* --- @TXEOF()@ --- * |
447 | * |
448 | * Arguments: --- |
449 | * |
450 | * Returns: True if end-of-file has been seen on the transport, otherwise |
451 | * false. |
452 | */ |
453 | |
661c4bdc |
454 | static APIRET APIENTRY rxfn_txeof(const char *fn, ULONG ac, RXSTRING *av, |
455 | const char *sn, RXSTRING *r) |
2ec1e693 |
456 | { |
457 | if (ac || !tx) |
458 | return (-1); |
459 | rxs_putf(r, "%d", tx->s == TX_CLOSED && !tx->ll); |
460 | return (0); |
461 | } |
462 | |
463 | /* --- @txready([MILLIS])@ --- * |
464 | * |
465 | * Arguments: @MILLIS@ = how long (in milliseconds) to wait, or `forever' |
466 | * |
467 | * Returns: True if a line is ready, otherwise false. |
468 | * |
469 | * Use: Returns whether the transport is ready for reading. If |
470 | * @MILLIS@ is an integer, then wait for at most that many |
471 | * milliseconds before returning. If @MILLIS@ is `forever' (or |
472 | * anything beginning with `f') then wait forever for |
473 | * readiness. This isn't useless: it can trip the end-of-file |
474 | * detector. If @MILLIS@ is omitted, return immediately (as if |
475 | * 0 had been specified). |
476 | */ |
477 | |
661c4bdc |
478 | static APIRET APIENTRY rxfn_txready(const char *fn, ULONG ac, RXSTRING *av, |
479 | const char *sn, RXSTRING *r) |
2ec1e693 |
480 | { |
481 | unsigned long t = 0; |
482 | |
483 | if (ac > 1 || !tx) |
484 | return (-1); |
485 | if (ac >= 1 && rxs_block(&av[0], &t)) |
486 | return (-1); |
487 | rxs_putf(r, "%d", !!tx_read(tx, t)); |
488 | return (0); |
489 | } |
490 | |
491 | /* --- @MILLIWAIT(MILLIS)@ --- * |
492 | * |
493 | * Arguments: @MILLIS@ = how long (in milliseconds) to wait |
494 | * |
495 | * Returns: --- |
496 | * |
497 | * Use: Waits for @MILLIS@ milliseconds. Always. |
498 | */ |
499 | |
661c4bdc |
500 | static APIRET APIENTRY rxfn_milliwait(const char *fn, ULONG ac, RXSTRING *av, |
501 | const char *sn, RXSTRING *r) |
2ec1e693 |
502 | { |
503 | long l; |
504 | struct timeval tv; |
505 | |
506 | if (ac != 1 || !av[0].strptr) |
507 | return (-1); |
508 | if (rxs_tol(&av[0], &l) || l < 0) |
509 | return (-1); |
510 | tv.tv_sec = l / 1000; |
511 | tv.tv_usec = (l % 1000) * 1000; |
512 | select(0, 0, 0, 0, &tv); |
513 | return (0); |
514 | } |
515 | |
516 | /*----- Initialization ----------------------------------------------------*/ |
517 | |
518 | struct rxfntab { char *name; RexxFunctionHandler *fn; }; |
519 | |
520 | static const struct rxfntab rxfntab[] = { |
661c4bdc |
521 | { "test", rxfn_test }, |
522 | { "txname", rxfn_txname }, |
523 | { "txfile", rxfn_txfile }, |
524 | { "txconf", rxfn_txconf }, |
525 | { "txinit", rxfn_txinit }, |
526 | { "txsend", rxfn_txsend }, |
527 | { "txrecv", rxfn_txrecv }, |
528 | { "txeof", rxfn_txeof }, |
529 | { "txready", rxfn_txready }, |
530 | { "milliwait", rxfn_milliwait }, |
2ec1e693 |
531 | { 0, 0 } |
532 | }; |
533 | |
534 | /* --- @rx_init@ --- * |
535 | * |
536 | * Arguments: --- |
537 | * |
538 | * Returns: --- |
539 | * |
540 | * Use: Initializes the REXX external functions. |
541 | */ |
542 | |
543 | void rx_init(void) |
544 | { |
545 | const struct rxfntab *f; |
546 | int rc; |
547 | |
548 | for (f = rxfntab; f->fn; f++) { |
549 | if ((rc = RexxRegisterFunctionExe(f->name, f->fn)) != 0) { |
550 | err_report(ERR_RXGLUE, ERRRX_INIT, rc, |
551 | "couldn't register function `%s' (code %d)", f->name, rc); |
552 | abort(); |
553 | } |
554 | } |
555 | } |
556 | |
557 | /*----- Running REXX programs ---------------------------------------------*/ |
558 | |
559 | /* --- @rx_run@ --- * |
560 | * |
561 | * Arguments: @const char *name@ = pointer to filename (or null) |
562 | * @const void *p@ = pointer to program text |
563 | * @size_t sz@ = size of program text |
564 | * @int ac@ = number of arguments |
565 | * @const char *const *av@ = vector of command-line arguments |
566 | * |
567 | * Returns: Exit code from program. |
568 | * |
569 | * Use: Runs a REXX script from memory. |
570 | */ |
571 | |
572 | int rx_run(const char *name, const void *p, size_t sz, |
573 | int ac, const char *const *av) |
574 | { |
575 | RXSTRING prog[2]; |
576 | RXSTRING *argv; |
577 | RXSTRING res; |
578 | dstr d = DSTR_INIT; |
579 | short badrc; |
580 | int rc; |
581 | int i; |
582 | |
583 | /* --- Set things up --- */ |
584 | |
585 | if (!name) |
586 | name = "incore"; |
587 | MAKERXSTRING(prog[0], (void *)p, sz); |
588 | MAKERXSTRING(prog[1], 0, 0); |
661c4bdc |
589 | argv = rx_alloc(ac * sizeof(*argv)); |
2ec1e693 |
590 | for (i = 0; i < ac; i++) |
591 | MAKERXSTRING(argv[i], (char *)av[i], strlen(av[i])); |
592 | |
593 | /* --- Run the script --- */ |
594 | |
595 | MAKERXSTRING(res, 0, 0); |
661c4bdc |
596 | rc = RexxStart(ac, argv, name, prog, |
597 | "SYSTEM", RXSUBROUTINE, 0, &badrc, &res); |
2ec1e693 |
598 | if (rc) { |
661c4bdc |
599 | rx_free(RXSTRPTR(res)); |
600 | rx_free(argv); |
2ec1e693 |
601 | if (rc < 0) |
602 | err_report(ERR_RXERR, 0, -rc, "rexx error from script `%s'", name); |
603 | else |
604 | err_report(ERR_RXGLUE, ERRRX_INTERP, rc, "intepreter internal error"); |
605 | return (-1); |
606 | } |
607 | |
608 | /* --- Pick apart the results --- */ |
609 | |
610 | dstr_putm(&d, RXSTRPTR(res), RXSTRLEN(res)); |
661c4bdc |
611 | rx_free(RXSTRPTR(res)); |
612 | rx_free(argv); |
2ec1e693 |
613 | dstr_putz(&d); |
614 | rc = atoi(d.buf); |
615 | dstr_destroy(&d); |
616 | return (rc); |
617 | } |
618 | |
619 | /* --- @rx_runfile@ --- * |
620 | * |
621 | * Arguments: @const char *name@ = pointer to filename |
622 | * @int ac@ = number of command-line arguments |
623 | * @const char *const *av@ = vector of command-line arguments |
624 | * |
625 | * Returns: Exit code from program. |
626 | * |
627 | * Use: Runs a REXX script from a file, given its name. |
628 | */ |
629 | |
630 | int rx_runfile(const char *name, int ac, const char *const *av) |
631 | { |
632 | FILE *fp; |
633 | dstr d = DSTR_INIT; |
634 | char buf[BUFSIZ]; |
635 | size_t n; |
636 | int rc; |
637 | |
638 | /* --- Read the file into memory --- * |
639 | * |
640 | * This way avoids any crapness in the REXX implementation and means we can |
641 | * report errors in a more sensible way. |
642 | */ |
643 | |
644 | if ((fp = fopen(name, "r")) == 0) |
645 | goto fail_0; |
646 | do { |
647 | n = fread(buf, 1, sizeof(buf), fp); |
648 | DPUTM(&d, buf, n); |
649 | } while (n == sizeof(buf)); |
650 | if (ferror(fp)) |
651 | goto fail_1; |
652 | fclose(fp); |
653 | |
654 | /* --- Now do the from-memory thing --- */ |
655 | |
656 | rc = rx_run(name, d.buf, d.len, ac, av); |
657 | dstr_destroy(&d); |
658 | return (rc); |
659 | |
660 | /* --- Tidy up on errors --- */ |
661 | |
662 | fail_1: |
663 | dstr_destroy(&d); |
664 | fclose(fp); |
665 | fail_0: |
666 | err_report(ERR_RXGLUE, ERRRX_SCRIPTREAD, errno, |
667 | "couldn't read script `%s': %s", name, strerror(errno)); |
668 | return (-1); |
669 | } |
670 | |
671 | /*----- That's all, folks -------------------------------------------------*/ |