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e29834b8 MW |
1 | /* -*-c-*- |
2 | * | |
3 | * Invoke a Lisp script | |
4 | * | |
5 | * (c) 2020 Mark Wooding | |
6 | */ | |
7 | ||
8 | /*----- Licensing notice --------------------------------------------------* | |
9 | * | |
10 | * This file is part of Runlisp, a tool for invoking Common Lisp scripts. | |
11 | * | |
12 | * Runlisp is free software: you can redistribute it and/or modify it | |
13 | * under the terms of the GNU General Public License as published by the | |
14 | * Free Software Foundation; either version 3 of the License, or (at your | |
15 | * option) any later version. | |
16 | * | |
17 | * Runlisp is distributed in the hope that it will be useful, but WITHOUT | |
18 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
19 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
20 | * for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with Runlisp. If not, see <https://www.gnu.org/licenses/>. | |
24 | */ | |
25 | ||
26 | /*----- Header files ------------------------------------------------------*/ | |
27 | ||
28 | #include "config.h" | |
29 | ||
30 | #include <assert.h> | |
31 | #include <ctype.h> | |
32 | #include <errno.h> | |
33 | #include <stdarg.h> | |
34 | #include <stdio.h> | |
35 | #include <stdlib.h> | |
36 | #include <string.h> | |
37 | ||
38 | #include <unistd.h> | |
39 | #include <sys/stat.h> | |
40 | ||
41 | #include <pwd.h> | |
42 | ||
43 | /*----- Common Lisp runes -------------------------------------------------*/ | |
44 | ||
45 | /* A common preamble rune to do the necessary things. | |
46 | * | |
47 | * We need to ensure that `asdf' (and therefore `uiop') is loaded. And we | |
48 | * should arrange for `:runlisp-script' to find its way into the `*features*' | |
49 | * list so that scripts can notice that they're being invoked from the | |
50 | * command line rather than loaded into a resident session, and actually do | |
51 | * something useful. | |
52 | */ | |
53 | #define COMMON_PRELUDE_RUNE \ | |
54 | "(progn " \ | |
55 | "(setf *load-verbose* nil *compile-verbose* nil) " \ | |
56 | "(require \"asdf\") " \ | |
57 | "(funcall (intern \"REGISTER-IMMUTABLE-SYSTEM\" " \ | |
58 | "(find-package \"ASDF\")) " \ | |
59 | "\"asdf\") " \ | |
60 | "(set-dispatch-macro-character " \ | |
61 | "#\\# #\\! " \ | |
62 | "(lambda (#1=#:stream #2=#:char #3=#:arg) " \ | |
63 | "(declare (ignore #2# #3#)) " \ | |
64 | "(values (read-line #1#)))) " \ | |
65 | "(pushnew :runlisp-script *features*))" | |
66 | ||
67 | /* Get `uiop' to re-check the command-line arguments following an image | |
68 | * restore. | |
69 | */ | |
70 | #define IMAGE_RESTORE_RUNE \ | |
71 | "(uiop:call-image-restore-hook)" | |
72 | ||
73 | /* Some Lisps leave crud in the `COMMON-LISP-USER' package. Clear it out. */ | |
74 | #define CLEAR_CL_USER_RUNE \ | |
75 | "(let ((#4=#:pkg (find-package \"COMMON-LISP-USER\"))) " \ | |
76 | "(with-package-iterator (#5=#:next #4# :internal) " \ | |
77 | "(loop (multiple-value-bind (#6=#:anyp #7=#:sym #8=#:how) " \ | |
78 | "(#5#) " \ | |
79 | "(declare (ignore #8#)) " \ | |
80 | "(unless #6# (return)) " \ | |
81 | "(unintern #7# #4#)))))" | |
82 | ||
83 | /*----- Handy macros ------------------------------------------------------*/ | |
84 | ||
85 | #define N(v) (sizeof(v)/sizeof((v)[0])) | |
86 | ||
87 | #if defined(__GNUC__) | |
88 | # define GCC_VERSION_P(maj, min) \ | |
89 | (__GNUC__ > (maj) || (__GNUC__ == (maj) && __GNUC_MINOR__ >= (min))) | |
90 | #else | |
91 | # define GCC_VERSION_P(maj, min) 0 | |
92 | #endif | |
93 | ||
94 | #ifdef __clang__ | |
95 | # define CLANG_VERSION_P(maj, min) \ | |
96 | (__clang_major__ > (maj) || (__clang_major__ == (maj) && \ | |
97 | __clang_minor__ >= (min))) | |
98 | #else | |
99 | # define CLANG_VERSION_P(maj, min) 0 | |
100 | #endif | |
101 | ||
102 | #if GCC_VERSION_P(2, 5) || CLANG_VERSION_P(3, 3) | |
103 | # define NORETURN __attribute__((__noreturn__)) | |
104 | # define PRINTF_LIKE(fix, aix) __attribute__((__format__(printf, fix, aix))) | |
105 | #endif | |
106 | ||
107 | #if GCC_VERSION_P(4, 0) || CLANG_VERSION_P(3, 3) | |
108 | # define EXECL_LIKE(ntrail) __attribute__((__sentinel__(ntrail))) | |
109 | #endif | |
110 | ||
111 | #define CTYPE_HACK(func, ch) (func((unsigned char)(ch))) | |
112 | #define ISSPACE(ch) CTYPE_HACK(isspace, ch) | |
113 | ||
114 | #define MEMCMP(x, op, y, n) (memcmp((x), (y), (n)) op 0) | |
115 | #define STRCMP(x, op, y) (strcmp((x), (y)) op 0) | |
116 | #define STRNCMP(x, op, y, n) (strncmp((x), (y), (n)) op 0) | |
117 | ||
118 | #define END ((const char *)0) | |
119 | ||
120 | /*----- The Lisp implementation table -------------------------------------*/ | |
121 | ||
122 | /* The systems, in decreasing order of (not quite my personal) preference. | |
123 | * This list is used to initialize various tables and constants. | |
124 | */ | |
125 | #define LISP_SYSTEMS(_) \ | |
126 | _(sbcl) \ | |
127 | _(ccl) \ | |
128 | _(clisp) \ | |
129 | _(ecl) \ | |
130 | _(cmucl) \ | |
131 | _(abcl) | |
132 | ||
133 | enum { | |
134 | #define DEFSYS(sys) sys##_INDEX, | |
135 | LISP_SYSTEMS(DEFSYS) | |
136 | #undef DEFSYS | |
137 | NSYS | |
138 | }; | |
139 | ||
140 | enum { | |
141 | #define DEFFLAG(sys) sys##_FLAG = 1 << sys##_INDEX, | |
142 | LISP_SYSTEMS(DEFFLAG) | |
143 | #undef DEFFLAG | |
144 | ALL_SYSTEMS = 0 | |
145 | #define SETFLAG(sys) | sys##_FLAG | |
146 | LISP_SYSTEMS(SETFLAG) | |
147 | #undef SETFLAG | |
148 | }; | |
149 | ||
150 | struct argstate; | |
151 | struct argv; | |
152 | ||
153 | #define DECLENTRY(sys) \ | |
154 | static void run_##sys(struct argstate *, const char *); | |
155 | LISP_SYSTEMS(DECLENTRY) | |
156 | #undef DECLENTRY | |
157 | ||
158 | static const struct systab { | |
159 | const char *name; | |
160 | unsigned f; | |
161 | void (*run)(struct argstate *, const char *); | |
162 | } systab[] = { | |
163 | #define SYSENTRY(sys) { #sys, sys##_FLAG, run_##sys }, | |
164 | LISP_SYSTEMS(SYSENTRY) | |
165 | #undef SYSENTRY | |
166 | }; | |
167 | ||
168 | /*----- Diagnostic utilities ----------------------------------------------*/ | |
169 | ||
170 | static const char *progname = "runlisp"; | |
171 | ||
172 | static void set_progname(const char *prog) | |
173 | { | |
174 | const char *p; | |
175 | ||
176 | p = strrchr(prog, '/'); | |
177 | progname = p ? p + 1 : progname; | |
178 | } | |
179 | ||
180 | static void vmoan(const char *msg, va_list ap) | |
181 | { | |
182 | fprintf(stderr, "%s: ", progname); | |
183 | vfprintf(stderr, msg, ap); | |
184 | fputc('\n', stderr); | |
185 | } | |
186 | ||
187 | static PRINTF_LIKE(1, 2) void moan(const char *msg, ...) | |
188 | { va_list ap; va_start(ap, msg); vmoan(msg, ap); va_end(ap); } | |
189 | ||
190 | static NORETURN PRINTF_LIKE(1, 2) void lose(const char *msg, ...) | |
191 | { va_list ap; va_start(ap, msg); vmoan(msg, ap); va_end(ap); exit(127); } | |
192 | ||
193 | /*----- Memory allocation -------------------------------------------------*/ | |
194 | ||
195 | static void *xmalloc(size_t n) | |
196 | { | |
197 | void *p; | |
198 | ||
199 | if (!n) return (0); | |
200 | p = malloc(n); if (!p) lose("failed to allocate memory"); | |
201 | return (p); | |
202 | } | |
203 | ||
204 | static void *xrealloc(void *p, size_t n) | |
205 | { | |
206 | if (!n) { free(p); return (0); } | |
207 | else if (!p) return (xmalloc(n)); | |
208 | p = realloc(p, n); if (!p) lose("failed to allocate memory"); | |
209 | return (p); | |
210 | } | |
211 | ||
212 | static char *xstrdup(const char *p) | |
213 | { | |
214 | size_t n = strlen(p) + 1; | |
215 | char *q = xmalloc(n); | |
216 | ||
217 | memcpy(q, p, n); | |
218 | return (q); | |
219 | } | |
220 | ||
221 | /*----- Dynamic strings ---------------------------------------------------*/ | |
222 | ||
223 | struct dstr { | |
224 | char *p; | |
225 | size_t len, sz; | |
226 | }; | |
227 | #define DSTR_INIT { 0, 0, 0 } | |
228 | ||
229 | /* | |
230 | static void dstr_init(struct dstr *d) { d->p = 0; d->len = d->sz = 0; } | |
231 | */ | |
232 | ||
233 | static void dstr_reset(struct dstr *d) { d->len = 0; } | |
234 | ||
235 | static void dstr_ensure(struct dstr *d, size_t n) | |
236 | { | |
237 | size_t need = d->len + n, newsz; | |
238 | ||
239 | if (need <= d->sz) return; | |
240 | newsz = d->sz ? 2*d->sz : 16; | |
241 | while (newsz < need) newsz *= 2; | |
242 | d->p = xrealloc(d->p, newsz); d->sz = newsz; | |
243 | } | |
244 | ||
245 | static void dstr_release(struct dstr *d) { free(d->p); } | |
246 | ||
247 | static void dstr_putm(struct dstr *d, const void *p, size_t n) | |
248 | { dstr_ensure(d, n); memcpy(d->p + d->len, p, n); d->len += n; } | |
249 | ||
250 | static void dstr_puts(struct dstr *d, const char *p) | |
251 | { | |
252 | size_t n = strlen(p); | |
253 | ||
254 | dstr_ensure(d, n + 1); | |
255 | memcpy(d->p + d->len, p, n + 1); | |
256 | d->len += n; | |
257 | } | |
258 | ||
259 | static void dstr_putc(struct dstr *d, int ch) | |
260 | { dstr_ensure(d, 1); d->p[d->len++] = ch; } | |
261 | ||
262 | static void dstr_putz(struct dstr *d) | |
263 | { dstr_ensure(d, 1); d->p[d->len] = 0; } | |
264 | ||
265 | static int dstr_readline(struct dstr *d, FILE *fp) | |
266 | { | |
267 | size_t n; | |
268 | int any = 0; | |
269 | ||
270 | for (;;) { | |
271 | dstr_ensure(d, 2); | |
272 | if (!fgets(d->p + d->len, d->sz - d->len, fp)) break; | |
273 | n = strlen(d->p + d->len); assert(n > 0); any = 1; | |
274 | d->len += n; | |
275 | if (d->p[d->len - 1] == '\n') { d->p[--d->len] = 0; break; } | |
276 | } | |
277 | ||
278 | if (!any) return (-1); | |
279 | else return (0); | |
280 | } | |
281 | /*----- Dynamic vectors of strings ----------------------------------------*/ | |
282 | ||
283 | struct argv { | |
284 | const char **v; | |
285 | size_t o, n, sz; | |
286 | }; | |
287 | #define ARGV_INIT { 0, 0, 0, 0 } | |
288 | ||
289 | /* | |
290 | static void argv_init(struct argv *av) | |
291 | { av->v = 0; av->o = av->n = av->sz = 0; } | |
292 | */ | |
293 | ||
294 | /* | |
295 | static void argv_reset(struct argv *av) { av->o = av->n = 0; } | |
296 | */ | |
297 | ||
298 | static void argv_ensure(struct argv *av, size_t n) | |
299 | { | |
300 | size_t need = av->n + av->o + n, newsz; | |
301 | ||
302 | if (need <= av->sz) return; | |
303 | newsz = av->sz ? 2*av->sz : 8; | |
304 | while (newsz < need) newsz *= 2; | |
305 | av->v = xrealloc(av->v, newsz*sizeof(const char *)); av->sz = newsz; | |
306 | } | |
307 | ||
308 | static void argv_ensure_offset(struct argv *av, size_t n) | |
309 | { | |
310 | size_t newoff; | |
311 | ||
312 | /* Stupid version. We won't, in practice, be prepending lots of stuff, so | |
313 | * avoid the extra bookkeeping involved in trying to make a double-ended | |
314 | * extendable array asymptotically efficient. | |
315 | */ | |
316 | if (av->o >= n) return; | |
317 | newoff = 16; | |
318 | while (newoff < n) newoff *= 2; | |
319 | argv_ensure(av, newoff - av->o); | |
320 | memmove(av->v + newoff, av->v + av->o, av->n*sizeof(const char *)); | |
321 | av->o = newoff; | |
322 | } | |
323 | ||
324 | static void argv_release(struct argv *av) { free(av->v); } | |
325 | ||
326 | static void argv_append(struct argv *av, const char *p) | |
327 | { argv_ensure(av, 1); av->v[av->n++ + av->o] = p; } | |
328 | ||
329 | static void argv_appendz(struct argv *av) | |
330 | { argv_ensure(av, 1); av->v[av->n + av->o] = 0; } | |
331 | ||
332 | static void argv_appendn(struct argv *av, const char *const *v, size_t n) | |
333 | { | |
334 | argv_ensure(av, n); | |
335 | memcpy(av->v + av->n + av->o, v, n*sizeof(const char *)); | |
336 | av->n += n; | |
337 | } | |
338 | ||
339 | /* | |
340 | static void argv_appendav(struct argv *av, const struct argv *bv) | |
341 | { argv_appendn(av, bv->v + bv->o, bv->n); } | |
342 | */ | |
343 | ||
344 | /* | |
345 | static void argv_appendv(struct argv *av, va_list ap) | |
346 | { | |
347 | const char *p; | |
348 | ||
349 | for (;;) | |
350 | { p = va_arg(ap, const char *); if (!p) break; argv_append(av, p); } | |
351 | } | |
352 | */ | |
353 | ||
354 | /* | |
355 | static EXECL_LIKE(0) void argv_appendl(struct argv *av, ...) | |
356 | { va_list ap; va_start(ap, av); argv_appendv(av, ap); va_end(ap); } | |
357 | */ | |
358 | ||
359 | static void argv_prepend(struct argv *av, const char *p) | |
360 | { argv_ensure_offset(av, 1); av->v[--av->o] = p; av->n++; } | |
361 | ||
362 | /* | |
363 | static void argv_prependn(struct argv *av, const char *const *v, size_t n) | |
364 | { | |
365 | argv_ensure_offset(av, 1); | |
366 | av->o -= n; av->n += n; | |
367 | memcpy(av->v + av->o, v, n*sizeof(const char *)); | |
368 | } | |
369 | */ | |
370 | ||
371 | /* | |
372 | static void argv_prependav(struct argv *av, const struct argv *bv) | |
373 | { argv_prependn(av, bv->v + bv->o, bv->n); } | |
374 | */ | |
375 | ||
376 | static void argv_prependv(struct argv *av, va_list ap) | |
377 | { | |
378 | const char *p, **v; | |
379 | size_t n = 0; | |
380 | ||
381 | for (;;) { | |
382 | p = va_arg(ap, const char *); if (!p) break; | |
383 | argv_prepend(av, p); n++; | |
384 | } | |
385 | v = av->v + av->o; | |
386 | while (n >= 2) { | |
387 | p = v[0]; v[0] = v[n - 1]; v[n - 1] = p; | |
388 | v++; n -= 2; | |
389 | } | |
390 | } | |
391 | ||
392 | static EXECL_LIKE(0) void argv_prependl(struct argv *av, ...) | |
393 | { va_list ap; va_start(ap, av); argv_prependv(av, ap); va_end(ap); } | |
394 | ||
395 | /*----- Lisp system table (redux) -----------------------------------------*/ | |
396 | ||
397 | static const struct systab *find_system(const char *name) | |
398 | { | |
399 | const struct systab *sys; | |
400 | size_t i; | |
401 | ||
402 | for (i = 0; i < NSYS; i++) { | |
403 | sys = &systab[i]; | |
404 | if (STRCMP(name, ==, sys->name)) return (sys); | |
405 | } | |
406 | lose("unknown Lisp system `%s'", name); | |
407 | } | |
408 | ||
409 | static void lisp_quote_string(struct dstr *d, const char *p) | |
410 | { | |
411 | size_t n; | |
412 | ||
413 | for (;;) { | |
414 | n = strcspn(p, "\"\\"); | |
415 | if (n) { dstr_putm(d, p, n); p += n; } | |
416 | if (!*p) break; | |
417 | dstr_putc(d, '\\'); dstr_putc(d, *p++); | |
418 | } | |
419 | dstr_putz(d); | |
420 | } | |
421 | ||
422 | static const char *expand_rune(struct dstr *d, const char *rune, ...) | |
423 | { | |
424 | const struct argv *av; | |
425 | va_list ap; | |
426 | size_t i, n; | |
427 | ||
428 | va_start(ap, rune); | |
429 | for (;;) { | |
430 | n = strcspn(rune, "%"); | |
431 | if (n) { dstr_putm(d, rune, n); rune += n; } | |
432 | if (!*rune) break; | |
433 | switch (*++rune) { | |
434 | case '%': dstr_putc(d, '%'); break; | |
435 | case 'e': lisp_quote_string(d, va_arg(ap, const char *)); break; | |
436 | case 'E': | |
437 | av = va_arg(ap, const struct argv *); | |
438 | for (i = 0; i < av->n; i++) { | |
439 | if (i) dstr_putc(d, ' '); | |
440 | dstr_putc(d, '"'); | |
441 | lisp_quote_string(d, av->v[i]); | |
442 | dstr_putc(d, '"'); | |
443 | } | |
444 | break; | |
445 | default: lose("*** BUG unknown expansion `%%%c'", *rune); | |
446 | } | |
447 | rune++; | |
448 | } | |
449 | dstr_putz(d); | |
450 | return (d->p); | |
451 | } | |
452 | ||
453 | /*----- Argument processing -----------------------------------------------*/ | |
454 | ||
455 | struct syslist { | |
456 | const struct systab *sys[NSYS]; | |
457 | size_t n; | |
458 | unsigned f; | |
459 | }; | |
460 | #define SYSLIST_INIT { { 0 }, 0, 0 } | |
461 | ||
462 | struct argstate { | |
463 | unsigned f; | |
464 | #define F_BOGUS 1u | |
465 | #define F_NOEMBED 2u | |
466 | #define F_NOACT 4u | |
467 | #define F_NODUMP 8u | |
468 | #define F_AUX 16u | |
469 | int verbose; | |
470 | char *imagedir; | |
471 | struct syslist allow, pref; | |
472 | struct argv av; | |
473 | }; | |
474 | #define ARGSTATE_INIT { 0, 1, 0, SYSLIST_INIT, SYSLIST_INIT, ARGV_INIT } | |
475 | ||
476 | /*----- Running programs --------------------------------------------------*/ | |
477 | ||
478 | #define FEF_EXEC 1u | |
479 | static int file_exists_p(const struct argstate *arg, const char *path, | |
480 | unsigned f) | |
481 | { | |
482 | struct stat st; | |
483 | ||
484 | if (stat(path, &st)) { | |
485 | if (arg && arg->verbose > 2) moan("file `%s' not found", path); | |
486 | return (0); | |
487 | } else if (!(S_ISREG(st.st_mode))) { | |
488 | if (arg && arg->verbose > 2) moan("`%s' is not a regular file", path); | |
489 | return (0); | |
490 | } else if ((f&FEF_EXEC) && access(path, X_OK)) { | |
491 | if (arg && arg->verbose > 2) moan("file `%s' is not executable", path); | |
492 | return (0); | |
493 | } else { | |
494 | if (arg && arg->verbose > 2) moan("found file `%s'", path); | |
495 | return (1); | |
496 | } | |
497 | } | |
498 | ||
499 | static int found_in_path_p(const struct argstate *arg, const char *prog) | |
500 | { | |
501 | struct dstr p = DSTR_INIT, d = DSTR_INIT; | |
502 | const char *path; | |
503 | char *q; | |
504 | size_t n, avail, proglen; | |
505 | int i; | |
506 | ||
507 | if (strchr(prog, '/')) return (file_exists_p(arg, prog, 0)); | |
508 | path = getenv("PATH"); | |
509 | if (path) | |
510 | dstr_puts(&p, path); | |
511 | else { | |
512 | dstr_puts(&p, ".:"); | |
513 | i = 0; | |
514 | again: | |
515 | avail = p.sz - p.len; | |
516 | n = confstr(_CS_PATH, p.p + p.len, avail); | |
517 | if (avail > n) { i++; assert(i < 2); dstr_ensure(&p, n); goto again; } | |
518 | } | |
519 | ||
520 | q = p.p; proglen = strlen(prog); | |
521 | for (;;) { | |
522 | n = strcspn(q, ":"); | |
523 | dstr_reset(&d); | |
524 | if (q[n]) dstr_putm(&d, q, n); | |
525 | else dstr_putc(&d, '.'); | |
526 | dstr_putc(&d, '/'); | |
527 | dstr_putm(&d, prog, proglen); | |
528 | dstr_putz(&d); | |
529 | if (file_exists_p(arg, d.p, FEF_EXEC)) { | |
530 | if (arg->verbose == 2) moan("found program `%s'", d.p); | |
531 | return (1); | |
532 | } | |
533 | q += n; if (!*q) break; else q++; | |
534 | } | |
535 | return (0); | |
536 | } | |
537 | ||
538 | static void try_exec(const struct argstate *arg, struct argv *av) | |
539 | { | |
540 | struct dstr d = DSTR_INIT; | |
541 | size_t i; | |
542 | ||
543 | assert(av->n); argv_appendz(av); | |
544 | if (arg->verbose > 1) { | |
545 | for (i = 0; i < av->n; i++) { | |
546 | if (i) { dstr_putc(&d, ','); dstr_putc(&d, ' '); } | |
547 | dstr_putc(&d, '"'); | |
548 | lisp_quote_string(&d, av->v[av->o + i]); | |
549 | dstr_putc(&d, '"'); | |
550 | } | |
551 | dstr_putz(&d); | |
552 | moan("trying %s...", d.p); | |
553 | } | |
554 | if (arg->f&F_NOACT) | |
555 | { if (found_in_path_p(arg, av->v[av->o])) exit(0); } | |
556 | else { | |
557 | execvp(av->v[av->o], (/*unconst*/ char **)av->v + av->o); | |
558 | if (errno != ENOENT) | |
559 | lose("failed to exec `%s': %s", av->v[av->o], strerror(errno)); | |
560 | } | |
561 | if (arg->verbose > 1) moan("`%s' not found", av->v[av->o]); | |
562 | dstr_release(&d); | |
563 | } | |
564 | ||
565 | static const char *getenv_or_default(const char *var, const char *dflt) | |
566 | { const char *p = getenv(var); return (p ? p : dflt); } | |
567 | ||
568 | /*----- Invoking Lisp systems ---------------------------------------------*/ | |
569 | ||
570 | /* Steel Bank Common Lisp. */ | |
571 | ||
572 | static void run_sbcl(struct argstate *arg, const char *script) | |
573 | { | |
574 | struct dstr d = DSTR_INIT; | |
575 | ||
576 | argv_prependl(&arg->av, "--script", script, END); | |
577 | ||
578 | dstr_puts(&d, arg->imagedir); | |
579 | dstr_putc(&d, '/'); | |
580 | dstr_puts(&d, "sbcl+asdf.core"); | |
581 | if (!(arg->f&F_NODUMP) && file_exists_p(arg, d.p, 0)) | |
582 | argv_prependl(&arg->av, | |
583 | "--core", d.p, | |
584 | "--eval", IMAGE_RESTORE_RUNE, | |
585 | END); | |
586 | else | |
587 | argv_prependl(&arg->av, "--eval", COMMON_PRELUDE_RUNE, END); | |
588 | ||
589 | argv_prependl(&arg->av, getenv_or_default("SBCL", "sbcl"), | |
590 | "--noinform", | |
591 | END); | |
592 | try_exec(arg, &arg->av); | |
593 | dstr_release(&d); | |
594 | } | |
595 | ||
596 | /* Clozure Common Lisp. */ | |
597 | ||
598 | #define CCL_QUIT_RUNE \ | |
599 | "(ccl:quit)" | |
600 | ||
601 | static void run_ccl(struct argstate *arg, const char *script) | |
602 | { | |
603 | struct dstr d = DSTR_INIT; | |
604 | ||
605 | argv_prependl(&arg->av, "-b", "-n", "-Q", | |
606 | "-l", script, | |
607 | "-e", CCL_QUIT_RUNE, | |
608 | "--", | |
609 | END); | |
610 | ||
611 | dstr_puts(&d, arg->imagedir); | |
612 | dstr_putc(&d, '/'); | |
613 | dstr_puts(&d, "ccl+asdf.image"); | |
614 | if (!(arg->f&F_NODUMP) && file_exists_p(arg, d.p, 0)) | |
615 | argv_prependl(&arg->av, "-I", d.p, "-e", IMAGE_RESTORE_RUNE, END); | |
616 | else | |
617 | argv_prependl(&arg->av, "-e", COMMON_PRELUDE_RUNE, END); | |
618 | ||
619 | argv_prepend(&arg->av, getenv_or_default("CCL", "ccl")); | |
620 | try_exec(arg, &arg->av); | |
621 | dstr_release(&d); | |
622 | } | |
623 | ||
624 | /* GNU CLisp. | |
625 | * | |
626 | * CLisp causes much sadness. Superficially, it's the most sensible of all | |
627 | * of the systems supported here: you just run `clisp SCRIPT -- ARGS ...' and | |
628 | * it works. | |
629 | * | |
630 | * The problems come when you want to do some preparatory work (e.g., load | |
631 | * `asdf') and then run the script. There's a `-x' option to evaluate some | |
632 | * Lisp code, but it has three major deficiencies. | |
633 | * | |
634 | * * It insists on printing the values of the forms it evaluates. It | |
635 | * prints a blank line even if the form goes out of its way to produce no | |
636 | * values at all. So the whole thing has to be a single top-level form | |
637 | * which quits the Lisp rather than returning. | |
638 | * | |
639 | * * For some idiotic reason, you can have /either/ `-x' forms /or/ a | |
640 | * script, but not both. So we have to include the `load' here | |
641 | * explicitly. I suppose that was inevitable because we have to inhibit | |
642 | * printing of the result forms, but it's still a separate source of | |
643 | * annoyance. | |
644 | * | |
645 | * * The icing on the cake: the `-x' forms are collectively concatenated -- | |
646 | * without spaces! -- and used to build a string stream, which is then | |
647 | * assigned over the top of `*standard-input*', making the original stdin | |
648 | * somewhat fiddly to track down. | |
649 | * | |
650 | * There's an `-i' option which will load a file without any of this | |
651 | * stupidity, but nothing analogous for immediate expressions. | |
652 | */ | |
653 | ||
654 | #define CLISP_COMMON_STARTUP_RUNES \ | |
655 | "(setf *standard-input* (ext:make-stream :input)) " \ | |
656 | "(load \"%e\" :verbose nil :print nil) " \ | |
657 | "(ext:quit)" | |
658 | ||
659 | #define CLISP_STARTUP_RUNE \ | |
660 | "(progn " \ | |
661 | COMMON_PRELUDE_RUNE " " \ | |
662 | CLISP_COMMON_STARTUP_RUNES ")" | |
663 | ||
664 | #define CLISP_STARTUP_IMAGE_RUNE \ | |
665 | "(progn " \ | |
666 | IMAGE_RESTORE_RUNE " " \ | |
667 | CLISP_COMMON_STARTUP_RUNES ")" | |
668 | ||
669 | static void run_clisp(struct argstate *arg, const char *script) | |
670 | { | |
671 | struct dstr d = DSTR_INIT, dd = DSTR_INIT; | |
672 | ||
673 | dstr_puts(&d, arg->imagedir); | |
674 | dstr_putc(&d, '/'); | |
675 | dstr_puts(&d, "clisp+asdf.mem"); | |
676 | if (!(arg->f&F_NODUMP) && file_exists_p(arg, d.p, 0)) | |
677 | argv_prependl(&arg->av, "-M", d.p, "-q", | |
678 | "-x", expand_rune(&dd, CLISP_STARTUP_IMAGE_RUNE, script), | |
679 | "--", | |
680 | END); | |
681 | else | |
682 | argv_prependl(&arg->av, "-norc", "-q", | |
683 | "-x", expand_rune(&dd, CLISP_STARTUP_RUNE, script), | |
684 | "--", | |
685 | END); | |
686 | ||
687 | argv_prepend(&arg->av, getenv_or_default("CLISP", "clisp")); | |
688 | try_exec(arg, &arg->av); | |
689 | dstr_release(&d); | |
690 | dstr_release(&dd); | |
691 | ||
692 | #undef f | |
693 | } | |
694 | ||
695 | /* Embeddable Common Lisp. * | |
696 | * | |
697 | * ECL is changing its command-line option syntax in version 16. I have no | |
698 | * idea why they think the result can ever be worth the pain of a transition. | |
699 | */ | |
700 | ||
701 | #if ECL_OPTIONS_GNU | |
702 | # define ECLOPT "--" | |
703 | #else | |
704 | # define ECLOPT "-" | |
705 | #endif | |
706 | ||
707 | #define ECL_STARTUP_RUNE \ | |
708 | "(progn " \ | |
709 | COMMON_PRELUDE_RUNE " " \ | |
710 | CLEAR_CL_USER_RUNE ")" | |
711 | ||
712 | static void run_ecl(struct argstate *arg, const char *script) | |
713 | { | |
714 | struct dstr d = DSTR_INIT; | |
715 | ||
716 | dstr_puts(&d, arg->imagedir); | |
717 | dstr_putc(&d, '/'); | |
718 | dstr_puts(&d, "ecl+asdf"); | |
719 | if (!(arg->f&F_NODUMP) && file_exists_p(arg, d.p, FEF_EXEC)) { | |
720 | argv_prependl(&arg->av, "-s", script, "--", END); | |
721 | argv_prependl(&arg->av, d.p, END); | |
722 | } else { | |
723 | argv_prependl(&arg->av, ECLOPT "shell", script, "--", END); | |
724 | argv_prependl(&arg->av, getenv_or_default("ECL", "ecl"), ECLOPT "norc", | |
725 | ECLOPT "eval", ECL_STARTUP_RUNE, | |
726 | END); | |
727 | } | |
728 | try_exec(arg, &arg->av); | |
729 | } | |
730 | ||
731 | /* Carnegie--Mellon University Common Lisp. */ | |
732 | ||
733 | #define CMUCL_STARTUP_RUNE \ | |
734 | "(progn " \ | |
735 | "(setf ext:*require-verbose* nil) " \ | |
736 | COMMON_PRELUDE_RUNE ")" | |
737 | #define CMUCL_QUIT_RUNE \ | |
738 | "(ext:quit)" | |
739 | ||
740 | static void run_cmucl(struct argstate *arg, const char *script) | |
741 | { | |
742 | struct dstr d = DSTR_INIT; | |
743 | ||
744 | argv_prependl(&arg->av, | |
745 | "-load", script, | |
746 | "-eval", CMUCL_QUIT_RUNE, | |
747 | "--", | |
748 | END); | |
749 | ||
750 | dstr_puts(&d, arg->imagedir); | |
751 | dstr_putc(&d, '/'); | |
752 | dstr_puts(&d, "cmucl+asdf.core"); | |
753 | if (!(arg->f&F_NODUMP) && file_exists_p(arg, d.p, 0)) | |
754 | argv_prependl(&arg->av, "-core", d.p, "-eval", IMAGE_RESTORE_RUNE, END); | |
755 | else | |
756 | argv_prependl(&arg->av, "-batch", "-noinit", "-nositeinit", "-quiet", | |
757 | "-eval", CMUCL_STARTUP_RUNE, | |
758 | END); | |
759 | ||
760 | argv_prepend(&arg->av, getenv_or_default("CMUCL", "cmucl")); | |
761 | try_exec(arg, &arg->av); | |
762 | dstr_release(&d); | |
763 | } | |
764 | ||
765 | /* Armed Bear Common Lisp. * | |
766 | * | |
767 | * CLisp made a worthy effort, but ABCL still manages to take the price. | |
768 | * | |
769 | * * ABCL manages to avoid touching the `stderr' stream at all, ever. Its | |
770 | * startup machinery finds `stdout' (as `java.lang.System.out'), wraps it | |
771 | * up in a Lisp stream, and uses the result as `*standard-output*' and | |
772 | * `*error-output*' (and a goodly number of other things too). So we | |
773 | * must manufacture a working `stderr' the hard way. | |
774 | * | |
775 | * * There doesn't appear to be any easy way to prevent toplevel errors | |
776 | * from invoking the interactive debugger. For extra fun, the debugger | |
777 | * reads from `stdin' by default, so an input file which somehow manages | |
778 | * to break the script can then take over its brain by providing Lisp | |
779 | * forms for the debugger to evaluate. | |
780 | */ | |
781 | ||
782 | #define ABCL_STARTUP_RUNE \ | |
783 | "(let ((#9=#:script \"%e\")) " \ | |
784 | COMMON_PRELUDE_RUNE " " \ | |
785 | CLEAR_CL_USER_RUNE " " \ | |
786 | \ | |
787 | /* Replace the broken `*error-output*' stream with a working \ | |
788 | * copy of `stderr'. \ | |
789 | */ \ | |
790 | "(setf *error-output* " \ | |
791 | "(java:jnew \"org.armedbear.lisp.Stream\" " \ | |
792 | "'sys::system-stream " \ | |
793 | "(java:jfield \"java.lang.System\" \"err\") " \ | |
794 | "'character " \ | |
795 | "java:+true+)) " \ | |
796 | \ | |
797 | /* Trap errors signalled by the script and arrange for them \ | |
798 | * to actually kill the process rather than ending up in the \ | |
799 | * interactive debugger. \ | |
800 | */ \ | |
801 | "(handler-case (load #9# :verbose nil :print nil) " \ | |
802 | "(error (error) " \ | |
803 | "(format *error-output* \"~A (unhandled error): ~A~%%\" " \ | |
804 | "#9# error) " \ | |
805 | "(ext:quit :status 255))))" | |
806 | ||
807 | static void run_abcl(struct argstate *arg, const char *script) | |
808 | { | |
809 | struct dstr d = DSTR_INIT; | |
810 | ||
811 | argv_prependl(&arg->av, getenv_or_default("ABCL", "abcl"), | |
812 | "--batch", "--noinform", "--noinit", "--nosystem", | |
813 | "--eval", expand_rune(&d, ABCL_STARTUP_RUNE, script), | |
814 | "--", | |
815 | END); | |
816 | try_exec(arg, &arg->av); | |
817 | dstr_release(&d); | |
818 | } | |
819 | ||
820 | /*----- Main code ---------------------------------------------------------*/ | |
821 | ||
822 | static void version(FILE *fp) | |
823 | { fprintf(fp, "%s, version %s\n", progname, PACKAGE_VERSION); } | |
824 | ||
825 | static void usage(FILE *fp) | |
826 | { | |
827 | fprintf(fp, "usage: %s [-CDEnqv] [-I IMAGEDIR] " | |
828 | "[-L SYS,SYS,...] [-P SYS,SYS,...]\n" | |
829 | "\t[--] SCRIPT [ARGUMENTS ...] |\n" | |
830 | "\t[-e EXPR] [-p EXPR] [-l FILE] [--] [ARGUMENTS ...]\n", | |
831 | progname); | |
832 | } | |
833 | ||
834 | static void help(FILE *fp) | |
835 | { | |
836 | version(fp); fputc('\n', fp); usage(fp); | |
837 | fputs("\n\ | |
838 | Options:\n\ | |
839 | --help Show this help text and exit successfully.\n\ | |
840 | --version Show the version number and exit successfully.\n\ | |
841 | -C Clear the list of preferred Lisp systems.\n\ | |
842 | -D Run system Lisp images, rather than custom images.\n\ | |
843 | -E Don't read embedded options from the script.\n\ | |
844 | -I IMAGEDIR Look for custom images in IMAGEDIR rather than\n\ | |
845 | `" IMAGEDIR "'.\n\ | |
846 | -L SYS,SYS,... Only use the listed Lisp systems.the script.\n\ | |
847 | -P SYS,SYS,... Prefer the listed Lisp systems.\n\ | |
848 | -e EXPR Evaluate EXPR (can be repeated).\n\ | |
849 | -l FILE Load FILE (can be repeated).\n\ | |
850 | -n Don't actually run the script (useful with `-v')\n\ | |
851 | -p EXPR Print (`prin1') EXPR (can be repeated).\n\ | |
852 | -q Don't print warning messages.\n\ | |
853 | -v Print informational messages (repeat for even more).\n", | |
854 | fp); | |
855 | } | |
856 | ||
857 | /* Parse a comma-separated list of system names SPEC, and add the named | |
858 | * systems to LIST. | |
859 | */ | |
860 | static void parse_syslist(const char *spec, const struct argstate *arg, | |
861 | struct syslist *list, const char *what) | |
862 | { | |
863 | char *copy = xstrdup(spec), *p = copy, *q; | |
864 | const struct systab *sys; | |
865 | size_t n; | |
866 | ||
867 | for (;;) { | |
868 | n = strcspn(p, ","); | |
869 | if (p[n]) q = p + n + 1; | |
870 | else q = 0; | |
871 | p[n] = 0; sys = find_system(p); | |
872 | if (list->f&sys->f) { | |
873 | if (arg->verbose > 0) | |
874 | moan("ignoring duplicate system `%s' in %s list", p, what); | |
875 | } else { | |
876 | list->sys[list->n++] = sys; | |
877 | list->f |= sys->f; | |
878 | } | |
879 | if (!q) break; | |
880 | p = q; | |
881 | } | |
882 | free(copy); | |
883 | } | |
884 | ||
885 | static void push_eval_op(struct argstate *arg, char op, const char *val) | |
886 | { | |
887 | char *p; | |
888 | size_t n; | |
889 | ||
890 | if (arg->f&F_AUX) { | |
891 | moan("must use `-e', `-p', or `-l' on command line"); | |
892 | arg->f |= F_BOGUS; | |
893 | return; | |
894 | } | |
895 | ||
896 | n = strlen(val) + 1; | |
897 | p = xmalloc(n + 1); | |
898 | p[0] = op; memcpy(p + 1, val, n); | |
899 | argv_append(&arg->av, p); | |
900 | } | |
901 | ||
902 | /* Parse a vector ARGS of command-line arguments. Update ARG with the | |
903 | * results. NARG is the number of arguments, and *I_INOUT is the current | |
904 | * index into the vector, to be updated on exit to identify the first | |
905 | * non-option argument (or the end of the vector). | |
906 | */ | |
907 | static void parse_arguments(struct argstate *arg, const char *const *args, | |
908 | size_t nargs, size_t *i_inout) | |
909 | { | |
910 | const char *o, *a; | |
911 | char opt; | |
912 | ||
913 | for (;;) { | |
914 | if (*i_inout >= nargs) break; | |
915 | o = args[*i_inout]; | |
916 | if (STRCMP(o, ==, "--help")) { help(stdout); exit(0); } | |
917 | else if (STRCMP(o, ==, "--version")) { version(stdout); exit(0); } | |
918 | if (!*o || *o != '-' || !o[1]) break; | |
919 | (*i_inout)++; | |
920 | if (STRCMP(o, ==, "--")) break; | |
921 | o++; | |
922 | while (o && *o) { | |
923 | opt = *o++; | |
924 | switch (opt) { | |
925 | ||
926 | #define GETARG do { \ | |
927 | if (*o) \ | |
928 | { a = o; o = 0; } \ | |
929 | else { \ | |
930 | if (*i_inout >= nargs) goto noarg; \ | |
931 | a = args[(*i_inout)++]; \ | |
932 | } \ | |
933 | } while (0) | |
934 | ||
935 | case 'C': arg->pref.n = 0; arg->pref.f = 0; break; | |
936 | case 'D': arg->f |= F_NODUMP; break; | |
937 | case 'E': arg->f |= F_NOEMBED; break; | |
938 | case 'e': GETARG; push_eval_op(arg, '!', a); break; | |
939 | case 'p': GETARG; push_eval_op(arg, '?', a); break; | |
940 | case 'l': GETARG; push_eval_op(arg, '<', a); break; | |
941 | case 'n': arg->f |= F_NOACT; break; | |
942 | case 'q': if (arg->verbose) arg->verbose--; break; | |
943 | case 'v': arg->verbose++; break; | |
944 | ||
945 | case 'I': | |
946 | free(arg->imagedir); | |
947 | GETARG; arg->imagedir = xstrdup(a); | |
948 | break; | |
949 | ||
950 | case 'L': | |
951 | GETARG; | |
952 | parse_syslist(a, arg, &arg->allow, "allowed"); | |
953 | break; | |
954 | ||
955 | case 'P': | |
956 | GETARG; | |
957 | parse_syslist(a, arg, &arg->pref, "preferred"); | |
958 | break; | |
959 | ||
960 | default: | |
961 | moan("unknown option `%c'", opt); | |
962 | arg->f |= F_BOGUS; | |
963 | break; | |
964 | ||
965 | #undef GETARG | |
966 | ||
967 | } | |
968 | } | |
969 | } | |
970 | goto end; | |
971 | ||
972 | noarg: | |
973 | moan("missing argument for `-%c'", opt); | |
974 | arg->f |= F_BOGUS; | |
975 | end: | |
976 | return; | |
977 | } | |
978 | ||
979 | /* Parse a string P into words (destructively), and process them as | |
980 | * command-line options, updating ARG. Non-option arguments are not | |
981 | * permitted. If `SOSF_EMACS' is set in FLAGS, then ignore `-*- ... -*-' | |
982 | * editor turds. If `SOSF_ENDOK' is set, then accept `--' and ignore | |
983 | * whatever comes after; otherwise, reject all positional arguments. | |
984 | */ | |
985 | #define SOSF_EMACS 1u | |
986 | #define SOSF_ENDOK 2u | |
987 | static void scan_options_from_string(char *p, struct argstate *arg, | |
988 | unsigned flags, | |
989 | const char *what, const char *file) | |
990 | { | |
991 | struct argv av = ARGV_INIT; | |
992 | char *q; | |
993 | size_t i; | |
994 | int st = 0; | |
995 | unsigned f = 0; | |
996 | #define f_escape 1u | |
997 | ||
998 | for (;;) { | |
999 | while (ISSPACE(*p)) p++; | |
1000 | if (!*p) break; | |
1001 | if ((flags&SOSF_EMACS) && p[0] == '-' && p[1] == '*' && p[2] == '-') { | |
1002 | p = strstr(p + 3, "-*-"); | |
1003 | if (!p) lose("unfinished local-variables list in %s `%s'", what, file); | |
1004 | p += 3; continue; | |
1005 | } | |
1006 | if ((flags&SOSF_ENDOK) && | |
1007 | p[0] == '-' && p[1] == '-' && (!p[2] || ISSPACE(p[2]))) | |
1008 | break; | |
1009 | argv_append(&av, p); q = p; | |
1010 | for (;;) { | |
1011 | if (!*p) break; | |
1012 | else if (f&f_escape) { *q++ = *p; f &= ~f_escape; } | |
1013 | else if (st && *p == st) st = 0; | |
1014 | else if (st != '\'' && *p == '\\') f |= f_escape; | |
1015 | else if (!st && (*p == '"' || *p == '\'')) st = *p; | |
1016 | else if (!st && ISSPACE(*p)) break; | |
1017 | else *q++ = *p; | |
1018 | p++; | |
1019 | } | |
1020 | if (*p) p++; | |
1021 | *q = 0; | |
1022 | if (f&f_escape) lose("unfinished escape in %s `%s'", what, file); | |
1023 | if (st) lose("unfinished `%c' string in %s `%s'", st, what, file); | |
1024 | } | |
1025 | ||
1026 | i = 0; parse_arguments(arg, av.v, av.n, &i); | |
1027 | if (i < av.n) | |
1028 | lose("positional argument `%s' in %s `%s'", av.v[i], what, file); | |
1029 | argv_release(&av); | |
1030 | ||
1031 | #undef f_escape | |
1032 | } | |
1033 | ||
1034 | /* Read SCRIPT, and check for a `@RUNLISP:' marker in the second line. If | |
1035 | * there is one, parse options from it, and update ARG. | |
1036 | */ | |
1037 | static void check_for_embedded_args(const char *script, struct argstate *arg) | |
1038 | { | |
1039 | struct dstr d = DSTR_INIT; | |
1040 | char *p; | |
1041 | FILE *fp = 0; | |
1042 | ||
1043 | fp = fopen(script, "r"); | |
1044 | if (!fp) lose("can't read script `%s': %s", script, strerror(errno)); | |
1045 | ||
1046 | if (dstr_readline(&d, fp)) goto end; | |
1047 | dstr_reset(&d); if (dstr_readline(&d, fp)) goto end; | |
1048 | ||
1049 | p = strstr(d.p, "@RUNLISP:"); | |
1050 | if (p) | |
1051 | scan_options_from_string(p + 9, arg, SOSF_EMACS | SOSF_ENDOK, | |
1052 | "embedded options in script", script); | |
1053 | ||
1054 | end: | |
1055 | if (fp) { | |
1056 | if (ferror(fp)) | |
1057 | lose("error reading script `%s': %s", script, strerror(errno)); | |
1058 | fclose(fp); | |
1059 | } | |
1060 | dstr_release(&d); | |
1061 | } | |
1062 | ||
1063 | /* Read the file PATH (if it exists) and update ARG with the arguments parsed | |
1064 | * from it. Ignore blank lines and (Unix- or Lisp-style) comments. | |
1065 | */ | |
1066 | static void read_config_file(const char *path, struct argstate *arg) | |
1067 | { | |
1068 | FILE *fp = 0; | |
1069 | struct dstr d = DSTR_INIT; | |
1070 | char *p; | |
1071 | ||
1072 | fp = fopen(path, "r"); | |
1073 | if (!fp) { | |
1074 | if (errno == ENOENT) { | |
1075 | if (arg->verbose > 2) | |
1076 | moan("ignoring nonexistent configuration file `%s'", path); | |
1077 | goto end; | |
1078 | } | |
1079 | lose("failed to open configuration file `%s': %s", | |
1080 | path, strerror(errno)); | |
1081 | } | |
1082 | if (arg->verbose > 1) | |
1083 | moan("reading configuration file `%s'", path); | |
1084 | for (;;) { | |
1085 | dstr_reset(&d); | |
1086 | if (dstr_readline(&d, fp)) break; | |
1087 | p = d.p; | |
1088 | while (ISSPACE(*p)) p++; | |
1089 | if (!*p || *p == ';' || *p == '#') continue; | |
1090 | scan_options_from_string(p, arg, 0, "configuration file `%s'", path); | |
1091 | } | |
1092 | if (arg->f&F_BOGUS) | |
1093 | lose("invalid options in configuration file `%s'", path); | |
1094 | ||
1095 | end: | |
1096 | if (fp) { | |
1097 | if (ferror(fp)) | |
1098 | lose("error reading configuration file `%s': %s", | |
1099 | path, strerror(errno)); | |
1100 | fclose(fp); | |
1101 | } | |
1102 | dstr_release(&d); | |
1103 | } | |
1104 | ||
1105 | int main(int argc, char *argv[]) | |
1106 | { | |
1107 | struct dstr d = DSTR_INIT; | |
1108 | const char *script, *p; | |
1109 | const char *home; | |
1110 | struct passwd *pw; | |
1111 | char *t; | |
1112 | size_t i, n; | |
1113 | struct argstate arg = ARGSTATE_INIT; | |
1114 | ||
1115 | /* Scan the command line. This gets low priority, since it's probably | |
1116 | * from the script shebang. | |
1117 | */ | |
1118 | set_progname(argv[0]); i = 1; | |
1119 | parse_arguments(&arg, (const char *const *)argv, argc, &i); | |
1120 | arg.f |= F_AUX; | |
1121 | if ((i >= argc && !arg.av.n) || (arg.f&F_BOGUS)) | |
1122 | { usage(stderr); exit(255); } | |
1123 | ||
1124 | /* Prepare the argument vector. Keep track of the number of arguments | |
1125 | * here: we'll need to refer to this later. | |
1126 | */ | |
1127 | if (!arg.av.n) { | |
1128 | script = argv[i++]; | |
1129 | if (!(arg.f&F_NOEMBED)) check_for_embedded_args(script, &arg); | |
1130 | if (arg.f&F_BOGUS) | |
1131 | lose("invalid options in `%s' embedded option list", script); | |
1132 | } else { | |
1133 | script = getenv("RUNLISP_EVAL"); | |
1134 | if (!script) script = DATADIR "/eval.lisp"; | |
1135 | argv_append(&arg.av, "--"); | |
1136 | } | |
1137 | argv_appendn(&arg.av, (const char *const *)argv + i, argc - i); | |
1138 | n = arg.av.n; | |
1139 | ||
1140 | /* Find the user's home directory. (Believe them if they set something | |
1141 | * strange.) | |
1142 | */ | |
1143 | home = getenv("HOME"); | |
1144 | if (!home) { | |
1145 | pw = getpwuid(getuid()); | |
1146 | if (!pw) lose("can't find user in password database"); | |
1147 | home = pw->pw_dir; | |
1148 | } | |
1149 | ||
1150 | /* Check user configuration file `~/.runlisprc'. */ | |
1151 | dstr_reset(&d); | |
1152 | dstr_puts(&d, home); dstr_putc(&d, '/'); dstr_puts(&d, ".runlisprc"); | |
1153 | read_config_file(d.p, &arg); | |
1154 | ||
1155 | /* Check user configuration file `~/.config/runlisprc'. */ | |
1156 | dstr_reset(&d); | |
1157 | p = getenv("XDG_CONFIG_HOME"); | |
1158 | if (p) | |
1159 | dstr_puts(&d, p); | |
1160 | else | |
1161 | { dstr_puts(&d, home); dstr_putc(&d, '/'); dstr_puts(&d, ".config"); } | |
1162 | dstr_putc(&d, '/'); dstr_puts(&d, "runlisprc"); | |
1163 | read_config_file(d.p, &arg); | |
1164 | ||
1165 | /* Finally, check the environment variables. */ | |
1166 | p = getenv("RUNLISP_OPTIONS"); | |
1167 | if (p) { | |
1168 | t = xstrdup(p); | |
1169 | scan_options_from_string(t, &arg, 0, | |
1170 | "environment variable", "RUNLISP_OPTIONS"); | |
1171 | free(t); | |
1172 | } | |
1173 | if (arg.f&F_BOGUS) | |
1174 | lose("invalid options in environment variable `RUNLISP_OPTIONS'"); | |
1175 | if (!arg.imagedir) { | |
1176 | arg.imagedir = getenv("RUNLISP_IMAGEDIR"); | |
1177 | if (!arg.imagedir) arg.imagedir = IMAGEDIR; | |
1178 | } | |
1179 | ||
1180 | /* If no systems are listed as acceptable, try them all. */ | |
1181 | if (!arg.allow.n) { | |
1182 | if (arg.verbose > 1) | |
1183 | moan("no explicitly allowed implementations: allowing all"); | |
1184 | for (i = 0; i < NSYS; i++) arg.allow.sys[i] = &systab[i]; | |
1185 | arg.allow.n = NSYS; arg.allow.f = (1u << NSYS) - 1; | |
1186 | } | |
1187 | ||
1188 | /* Print what we're going to do. */ | |
1189 | if (arg.verbose > 2) { | |
1190 | dstr_reset(&d); p = ""; | |
1191 | for (i = 0; i < arg.allow.n; i++) | |
1192 | { dstr_puts(&d, p); p = ", "; dstr_puts(&d, arg.allow.sys[i]->name); } | |
1193 | moan("permitted Lisps: %s", d.p); | |
1194 | ||
1195 | dstr_reset(&d); p = ""; | |
1196 | for (i = 0; i < arg.pref.n; i++) | |
1197 | { dstr_puts(&d, p); p = ", "; dstr_puts(&d, arg.pref.sys[i]->name); } | |
1198 | moan("preferred Lisps: %s", d.p); | |
1199 | ||
1200 | dstr_reset(&d); p = ""; | |
1201 | for (i = 0; i < arg.pref.n; i++) | |
1202 | if (arg.pref.sys[i]->f&arg.allow.f) | |
1203 | { dstr_puts(&d, p); p = ", "; dstr_puts(&d, arg.pref.sys[i]->name); } | |
1204 | for (i = 0; i < arg.allow.n; i++) | |
1205 | if (!(arg.allow.sys[i]->f&arg.pref.f)) | |
1206 | { dstr_puts(&d, p); p = ", "; dstr_puts(&d, arg.allow.sys[i]->name); } | |
1207 | moan("overall preference order: %s", d.p); | |
1208 | } | |
1209 | ||
1210 | /* Inform `uiop' of the script name. | |
1211 | * | |
1212 | * As an aside, this is a terrible interface. It's too easy to forget to | |
1213 | * set it. (To illustrate this, `cl-launch -x' indeed forgets to set it.) | |
1214 | * If you're lucky, the script just thinks that its argument is `nil', in | |
1215 | * which case maybe it can use `*load-pathname*' as a fallback. If you're | |
1216 | * unlucky, your script was invoked (possibly indirectly) by another | |
1217 | * script, and now you've accidentally inherited the calling script's name. | |
1218 | * | |
1219 | * It would have been far better simply to repeat the script name as the | |
1220 | * first user argument, if nothing else had come readily to mind. | |
1221 | */ | |
1222 | if (setenv("__CL_ARGV0", script, 1)) | |
1223 | lose("failed to set script-name environment variable"); | |
1224 | ||
1225 | /* Work through the list of preferred Lisp systems, trying the ones which | |
1226 | * are allowed. | |
1227 | */ | |
1228 | for (i = 0; i < arg.pref.n; i++) | |
1229 | if (arg.pref.sys[i]->f&arg.allow.f) { | |
1230 | arg.av.o += arg.av.n - n; arg.av.n = n; | |
1231 | arg.pref.sys[i]->run(&arg, script); | |
1232 | } | |
1233 | ||
1234 | /* That didn't work. Try the remaining allowed systems, in the given | |
1235 | * order. | |
1236 | */ | |
1237 | for (i = 0; i < arg.allow.n; i++) | |
1238 | if (!(arg.allow.sys[i]->f&arg.pref.f)) { | |
1239 | arg.av.o += arg.av.n - n; arg.av.n = n; | |
1240 | arg.allow.sys[i]->run(&arg, script); | |
1241 | } | |
1242 | ||
1243 | /* No joy. Give up. */ | |
1244 | argv_release(&arg.av); | |
1245 | lose("no supported Lisp systems found"); | |
1246 | } | |
1247 | ||
1248 | /*----- That's all, folks -------------------------------------------------*/ |