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