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* 2022-01-18 [ci skip]
[ruby-80x24.org.git] / ruby.c
blob747934e6d1e1fd61998e8499667c38d3fa806cf1
1 /**********************************************************************
2
3 ruby.c -
4
5 $Author$
6 created at: Tue Aug 10 12:47:31 JST 1993
7
8 Copyright (C) 1993-2007 Yukihiro Matsumoto
9 Copyright (C) 2000 Network Applied Communication Laboratory, Inc.
10 Copyright (C) 2000 Information-technology Promotion Agency, Japan
11
12 **********************************************************************/
13
14 #include "ruby/internal/config.h"
15
16 #include <ctype.h>
17 #include <stdio.h>
18 #include <sys/types.h>
19
20 #ifdef __CYGWIN__
21 # include <windows.h>
22 # include <sys/cygwin.h>
23 #endif
24
25 #ifdef __hpux
26 # include <sys/pstat.h>
27 #endif
28
29 #if defined(LOAD_RELATIVE) && defined(HAVE_DLADDR)
30 # include <dlfcn.h>
31 #endif
32
33 #ifdef HAVE_UNISTD_H
34 # include <unistd.h>
35 #endif
36
37 #if defined(HAVE_FCNTL_H)
38 # include <fcntl.h>
39 #elif defined(HAVE_SYS_FCNTL_H)
40 # include <sys/fcntl.h>
41 #endif
42
43 #ifdef HAVE_SYS_PARAM_H
44 # include <sys/param.h>
45 #endif
46
47 #include "dln.h"
48 #include "eval_intern.h"
49 #include "internal.h"
50 #include "internal/cmdlineopt.h"
51 #include "internal/error.h"
52 #include "internal/file.h"
53 #include "internal/inits.h"
54 #include "internal/io.h"
55 #include "internal/load.h"
56 #include "internal/loadpath.h"
57 #include "internal/missing.h"
58 #include "internal/object.h"
59 #include "internal/parse.h"
60 #include "internal/process.h"
61 #include "internal/variable.h"
62 #include "ruby/encoding.h"
63 #include "ruby/thread.h"
64 #include "ruby/util.h"
65 #include "ruby/version.h"
66 #include "ruby/internal/error.h"
67
68 #ifndef MAXPATHLEN
69 # define MAXPATHLEN 1024
70 #endif
71 #ifndef O_ACCMODE
72 # define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR)
73 #endif
74
75 void Init_ruby_description(void);
76
77 #ifndef HAVE_STDLIB_H
78 char *getenv();
79 #endif
80
81 #ifndef DISABLE_RUBYGEMS
82 # define DISABLE_RUBYGEMS 0
83 #endif
84 #if DISABLE_RUBYGEMS
85 #define DEFAULT_RUBYGEMS_ENABLED "disabled"
86 #else
87 #define DEFAULT_RUBYGEMS_ENABLED "enabled"
88 #endif
89
90 void rb_warning_category_update(unsigned int mask, unsigned int bits);
91
92 #define COMMA ,
93 #define FEATURE_BIT(bit) (1U << feature_##bit)
94 #define EACH_FEATURES(X, SEP) \
95 X(gems) \
96 SEP \
97 X(error_highlight) \
98 SEP \
99 X(did_you_mean) \
100 SEP \
101 X(rubyopt) \
102 SEP \
103 X(frozen_string_literal) \
104 SEP \
105 X(mjit) \
106 SEP \
107 X(yjit) \
108 /* END OF FEATURES */
109 #define EACH_DEBUG_FEATURES(X, SEP) \
110 X(frozen_string_literal) \
111 /* END OF DEBUG FEATURES */
112 #define AMBIGUOUS_FEATURE_NAMES 0 /* no ambiguous feature names now */
113 #define DEFINE_FEATURE(bit) feature_##bit
114 #define DEFINE_DEBUG_FEATURE(bit) feature_debug_##bit
115 enum feature_flag_bits {
116 EACH_FEATURES(DEFINE_FEATURE, COMMA),
117 feature_debug_flag_first,
118 #if defined(MJIT_FORCE_ENABLE) || !YJIT_SUPPORTED_P
119 DEFINE_FEATURE(jit) = feature_mjit,
120 #else
121 DEFINE_FEATURE(jit) = feature_yjit,
122 #endif
123 feature_debug_flag_begin = feature_debug_flag_first - 1,
124 EACH_DEBUG_FEATURES(DEFINE_DEBUG_FEATURE, COMMA),
125 feature_flag_count
126 };
127
128 #define DEBUG_BIT(bit) (1U << feature_debug_##bit)
129
130 #define DUMP_BIT(bit) (1U << dump_##bit)
131 #define DEFINE_DUMP(bit) dump_##bit
132 #define EACH_DUMPS(X, SEP) \
133 X(version) \
134 SEP \
135 X(copyright) \
136 SEP \
137 X(usage) \
138 SEP \
139 X(help) \
140 SEP \
141 X(yydebug) \
142 SEP \
143 X(syntax) \
144 SEP \
145 X(parsetree) \
146 SEP \
147 X(parsetree_with_comment) \
148 SEP \
149 X(insns) \
150 SEP \
151 X(insns_without_opt) \
152 /* END OF DUMPS */
153 enum dump_flag_bits {
154 dump_version_v,
155 EACH_DUMPS(DEFINE_DUMP, COMMA),
156 dump_exit_bits = (DUMP_BIT(yydebug) | DUMP_BIT(syntax) |
157 DUMP_BIT(parsetree) | DUMP_BIT(parsetree_with_comment) |
158 DUMP_BIT(insns) | DUMP_BIT(insns_without_opt))
159 };
160
161 static inline void
162 rb_feature_set_to(ruby_features_t *feat, unsigned int bit_mask, unsigned int bit_set)
163 {
164 feat->mask |= bit_mask;
165 feat->set = (feat->set & ~bit_mask) | bit_set;
166 }
167
168 #define FEATURE_SET_TO(feat, bit_mask, bit_set) \
169 rb_feature_set_to(&(feat), bit_mask, bit_set)
170 #define FEATURE_SET(feat, bits) FEATURE_SET_TO(feat, bits, bits)
171 #define FEATURE_SET_RESTORE(feat, save) FEATURE_SET_TO(feat, (save).mask, (save).set & (save).mask)
172 #define FEATURE_SET_P(feat, bits) ((feat).set & (bits))
173
174 static void init_ids(ruby_cmdline_options_t *);
175
176 #define src_encoding_index GET_VM()->src_encoding_index
177
178 enum {
179 COMPILATION_FEATURES = (
180 0
181 | FEATURE_BIT(frozen_string_literal)
182 | FEATURE_BIT(debug_frozen_string_literal)
183 ),
184 DEFAULT_FEATURES = (
185 (FEATURE_BIT(debug_flag_first)-1)
186 #if DISABLE_RUBYGEMS
187 & ~FEATURE_BIT(gems)
188 #endif
189 & ~FEATURE_BIT(frozen_string_literal)
190 & ~FEATURE_BIT(mjit)
191 & ~FEATURE_BIT(yjit)
192 )
193 };
194
195 static ruby_cmdline_options_t *
196 cmdline_options_init(ruby_cmdline_options_t *opt)
197 {
198 MEMZERO(opt, *opt, 1);
199 init_ids(opt);
200 opt->src.enc.index = src_encoding_index;
201 opt->ext.enc.index = -1;
202 opt->intern.enc.index = -1;
203 opt->features.set = DEFAULT_FEATURES;
204 #ifdef MJIT_FORCE_ENABLE /* to use with: ./configure cppflags="-DMJIT_FORCE_ENABLE" */
205 opt->features.set |= FEATURE_BIT(mjit);
206 #elif defined(YJIT_FORCE_ENABLE)
207 opt->features.set |= FEATURE_BIT(yjit);
208 #endif
209
210 if (getenv("RUBY_YJIT_ENABLE")) {
211 opt->features.set |= FEATURE_BIT(yjit);
212 }
213
214 return opt;
215 }
216
217 static rb_ast_t *load_file(VALUE parser, VALUE fname, VALUE f, int script,
218 ruby_cmdline_options_t *opt);
219 static VALUE open_load_file(VALUE fname_v, int *xflag);
220 static void forbid_setid(const char *, const ruby_cmdline_options_t *);
221 #define forbid_setid(s) forbid_setid((s), opt)
222
223 static struct {
224 int argc;
225 char **argv;
226 } origarg;
227
228 static const char esc_standout[] = "\n\033[1;7m";
229 static const char esc_bold[] = "\033[1m";
230 static const char esc_reset[] = "\033[0m";
231 static const char esc_none[] = "";
232
233 static void
234 show_usage_line(const char *str, unsigned int namelen, unsigned int secondlen, int help, int highlight, unsigned int w)
235 {
236 const char *sb = highlight ? esc_bold : esc_none;
237 const char *se = highlight ? esc_reset : esc_none;
238 const int wrap = help && namelen + secondlen - 1 > w;
239 printf(" %s%.*s%-*.*s%s%-*s%s\n", sb, namelen-1, str,
240 (wrap ? 0 : w - namelen + 1),
241 (help ? secondlen-1 : 0), str + namelen, se,
242 (wrap ? w + 3 : 0), (wrap ? "\n" : ""),
243 str + namelen + secondlen);
244 }
245
246 static void
247 usage(const char *name, int help, int highlight, int columns)
248 {
249 /* This message really ought to be max 23 lines.
250 * Removed -h because the user already knows that option. Others? */
251
252 #define M(shortopt, longopt, desc) RUBY_OPT_MESSAGE(shortopt, longopt, desc)
253
254 #if YJIT_SUPPORTED_P
255 # define PLATFORM_JIT_OPTION "--yjit"
256 #else
257 # define PLATFORM_JIT_OPTION "--mjit"
258 #endif
259 static const struct ruby_opt_message usage_msg[] = {
260 M("-0[octal]", "", "specify record separator (\\0, if no argument)"),
261 M("-a", "", "autosplit mode with -n or -p (splits $_ into $F)"),
262 M("-c", "", "check syntax only"),
263 M("-Cdirectory", "", "cd to directory before executing your script"),
264 M("-d", ", --debug", "set debugging flags (set $DEBUG to true)"),
265 M("-e 'command'", "", "one line of script. Several -e's allowed. Omit [programfile]"),
266 M("-Eex[:in]", ", --encoding=ex[:in]", "specify the default external and internal character encodings"),
267 M("-Fpattern", "", "split() pattern for autosplit (-a)"),
268 M("-i[extension]", "", "edit ARGV files in place (make backup if extension supplied)"),
269 M("-Idirectory", "", "specify $LOAD_PATH directory (may be used more than once)"),
270 M("-l", "", "enable line ending processing"),
271 M("-n", "", "assume 'while gets(); ... end' loop around your script"),
272 M("-p", "", "assume loop like -n but print line also like sed"),
273 M("-rlibrary", "", "require the library before executing your script"),
274 M("-s", "", "enable some switch parsing for switches after script name"),
275 M("-S", "", "look for the script using PATH environment variable"),
276 M("-v", "", "print the version number, then turn on verbose mode"),
277 M("-w", "", "turn warnings on for your script"),
278 M("-W[level=2|:category]", "", "set warning level; 0=silence, 1=medium, 2=verbose"),
279 M("-x[directory]", "", "strip off text before #!ruby line and perhaps cd to directory"),
280 M("--jit", "", "enable JIT for the platform, same as " PLATFORM_JIT_OPTION " (experimental)"),
281 #if USE_MJIT
282 M("--mjit", "", "enable C compiler-based JIT compiler (experimental)"),
283 #endif
284 #if YJIT_SUPPORTED_P
285 M("--yjit", "", "enable in-process JIT compiler (experimental)"),
286 #endif
287 M("-h", "", "show this message, --help for more info"),
288 };
289 static const struct ruby_opt_message help_msg[] = {
290 M("--copyright", "", "print the copyright"),
291 M("--dump={insns|parsetree|...}[,...]", "",
292 "dump debug information. see below for available dump list"),
293 M("--enable={jit|rubyopt|...}[,...]", ", --disable={jit|rubyopt|...}[,...]",
294 "enable or disable features. see below for available features"),
295 M("--external-encoding=encoding", ", --internal-encoding=encoding",
296 "specify the default external or internal character encoding"),
297 M("--backtrace-limit=num", "", "limit the maximum length of backtrace"),
298 M("--verbose", "", "turn on verbose mode and disable script from stdin"),
299 M("--version", "", "print the version number, then exit"),
300 M("--help", "", "show this message, -h for short message"),
301 };
302 static const struct ruby_opt_message dumps[] = {
303 M("insns", "", "instruction sequences"),
304 M("insns_without_opt", "", "instruction sequences compiled with no optimization"),
305 M("yydebug", "", "yydebug of yacc parser generator"),
306 M("parsetree", "", "AST"),
307 M("parsetree_with_comment", "", "AST with comments"),
308 };
309 static const struct ruby_opt_message features[] = {
310 M("gems", "", "rubygems (only for debugging, default: "DEFAULT_RUBYGEMS_ENABLED")"),
311 M("error_highlight", "", "error_highlight (default: "DEFAULT_RUBYGEMS_ENABLED")"),
312 M("did_you_mean", "", "did_you_mean (default: "DEFAULT_RUBYGEMS_ENABLED")"),
313 M("rubyopt", "", "RUBYOPT environment variable (default: enabled)"),
314 M("frozen-string-literal", "", "freeze all string literals (default: disabled)"),
315 #if USE_MJIT
316 M("mjit", "", "C compiler-based JIT compiler (default: disabled)"),
317 #endif
318 #if YJIT_SUPPORTED_P
319 M("yjit", "", "in-process JIT compiler (default: disabled)"),
320 #endif
321 };
322 static const struct ruby_opt_message warn_categories[] = {
323 M("deprecated", "", "deprecated features"),
324 M("experimental", "", "experimental features"),
325 };
326 #if USE_MJIT
327 extern const struct ruby_opt_message mjit_option_messages[];
328 #endif
329 #if YJIT_SUPPORTED_P
330 static const struct ruby_opt_message yjit_options[] = {
331 #if YJIT_STATS
332 M("--yjit-stats", "", "Enable collecting YJIT statistics"),
333 #endif
334 M("--yjit-exec-mem-size=num", "", "Size of executable memory block in MiB (default: 256)"),
335 M("--yjit-call-threshold=num", "", "Number of calls to trigger JIT (default: 10)"),
336 M("--yjit-max-versions=num", "", "Maximum number of versions per basic block (default: 4)"),
337 M("--yjit-greedy-versioning", "", "Greedy versioning mode (default: disabled)"),
338 };
339 #endif
340 int i;
341 const char *sb = highlight ? esc_standout+1 : esc_none;
342 const char *se = highlight ? esc_reset : esc_none;
343 const int num = numberof(usage_msg) - (help ? 1 : 0);
344 unsigned int w = (columns > 80 ? (columns - 79) / 2 : 0) + 16;
345 #define SHOW(m) show_usage_line((m).str, (m).namelen, (m).secondlen, help, highlight, w)
346
347 printf("%sUsage:%s %s [switches] [--] [programfile] [arguments]\n", sb, se, name);
348 for (i = 0; i < num; ++i)
349 SHOW(usage_msg[i]);
350
351 if (!help) return;
352
353 if (highlight) sb = esc_standout;
354
355 for (i = 0; i < numberof(help_msg); ++i)
356 SHOW(help_msg[i]);
357 printf("%s""Dump List:%s\n", sb, se);
358 for (i = 0; i < numberof(dumps); ++i)
359 SHOW(dumps[i]);
360 printf("%s""Features:%s\n", sb, se);
361 for (i = 0; i < numberof(features); ++i)
362 SHOW(features[i]);
363 printf("%s""Warning categories:%s\n", sb, se);
364 for (i = 0; i < numberof(warn_categories); ++i)
365 SHOW(warn_categories[i]);
366 #if USE_MJIT
367 printf("%s""MJIT options (experimental):%s\n", sb, se);
368 for (i = 0; mjit_option_messages[i].str; ++i)
369 SHOW(mjit_option_messages[i]);
370 #endif
371 #if YJIT_SUPPORTED_P
372 printf("%s""YJIT options (experimental):%s\n", sb, se);
373 for (i = 0; i < numberof(yjit_options); ++i)
374 SHOW(yjit_options[i]);
375 #endif
376 }
377
378 #define rubylib_path_new rb_str_new
379
380 static void
381 push_include(const char *path, VALUE (*filter)(VALUE))
382 {
383 const char sep = PATH_SEP_CHAR;
384 const char *p, *s;
385 VALUE load_path = GET_VM()->load_path;
386
387 p = path;
388 while (*p) {
389 while (*p == sep)
390 p++;
391 if (!*p) break;
392 for (s = p; *s && *s != sep; s = CharNext(s));
393 rb_ary_push(load_path, (*filter)(rubylib_path_new(p, s - p)));
394 p = s;
395 }
396 }
397
398 #ifdef __CYGWIN__
399 static void
400 push_include_cygwin(const char *path, VALUE (*filter)(VALUE))
401 {
402 const char *p, *s;
403 char rubylib[FILENAME_MAX];
404 VALUE buf = 0;
405
406 p = path;
407 while (*p) {
408 unsigned int len;
409 while (*p == ';')
410 p++;
411 if (!*p) break;
412 for (s = p; *s && *s != ';'; s = CharNext(s));
413 len = s - p;
414 if (*s) {
415 if (!buf) {
416 buf = rb_str_new(p, len);
417 p = RSTRING_PTR(buf);
418 }
419 else {
420 rb_str_resize(buf, len);
421 p = strncpy(RSTRING_PTR(buf), p, len);
422 }
423 }
424 #ifdef HAVE_CYGWIN_CONV_PATH
425 #define CONV_TO_POSIX_PATH(p, lib) \
426 cygwin_conv_path(CCP_WIN_A_TO_POSIX|CCP_RELATIVE, (p), (lib), sizeof(lib))
427 #else
428 # error no cygwin_conv_path
429 #endif
430 if (CONV_TO_POSIX_PATH(p, rubylib) == 0)
431 p = rubylib;
432 push_include(p, filter);
433 if (!*s) break;
434 p = s + 1;
435 }
436 }
437
438 #define push_include push_include_cygwin
439 #endif
440
441 void
442 ruby_push_include(const char *path, VALUE (*filter)(VALUE))
443 {
444 if (path == 0)
445 return;
446 push_include(path, filter);
447 }
448
449 static VALUE
450 identical_path(VALUE path)
451 {
452 return path;
453 }
454 static VALUE
455 locale_path(VALUE path)
456 {
457 rb_enc_associate(path, rb_locale_encoding());
458 return path;
459 }
460
461 void
462 ruby_incpush(const char *path)
463 {
464 ruby_push_include(path, locale_path);
465 }
466
467 static VALUE
468 expand_include_path(VALUE path)
469 {
470 char *p = RSTRING_PTR(path);
471 if (!p)
472 return path;
473 if (*p == '.' && p[1] == '/')
474 return path;
475 return rb_file_expand_path(path, Qnil);
476 }
477
478 void
479 ruby_incpush_expand(const char *path)
480 {
481 ruby_push_include(path, expand_include_path);
482 }
483
484 #undef UTF8_PATH
485 #if defined _WIN32 || defined __CYGWIN__
486 static HMODULE libruby;
487
488 BOOL WINAPI
489 DllMain(HINSTANCE dll, DWORD reason, LPVOID reserved)
490 {
491 if (reason == DLL_PROCESS_ATTACH)
492 libruby = dll;
493 return TRUE;
494 }
495
496 HANDLE
497 rb_libruby_handle(void)
498 {
499 return libruby;
500 }
501
502 static inline void
503 translit_char_bin(char *p, int from, int to)
504 {
505 while (*p) {
506 if ((unsigned char)*p == from)
507 *p = to;
508 p++;
509 }
510 }
511 #endif
512
513 #ifdef _WIN32
514 # define UTF8_PATH 1
515 #endif
516
517 #ifndef UTF8_PATH
518 # define UTF8_PATH 0
519 #endif
520 #if UTF8_PATH
521 # define IF_UTF8_PATH(t, f) t
522 #else
523 # define IF_UTF8_PATH(t, f) f
524 #endif
525
526 #if UTF8_PATH
527 static VALUE
528 str_conv_enc(VALUE str, rb_encoding *from, rb_encoding *to)
529 {
530 return rb_str_conv_enc_opts(str, from, to,
531 ECONV_UNDEF_REPLACE|ECONV_INVALID_REPLACE,
532 Qnil);
533 }
534 #else
535 # define str_conv_enc(str, from, to) (str)
536 #endif
537
538 void ruby_init_loadpath(void);
539
540 #if defined(LOAD_RELATIVE)
541 static VALUE
542 runtime_libruby_path(void)
543 {
544 #if defined _WIN32 || defined __CYGWIN__
545 DWORD len, ret;
546 #if USE_RVARGC
547 len = 32;
548 #else
549 len = RSTRING_EMBED_LEN_MAX;
550 #endif
551 VALUE path;
552 VALUE wsopath = rb_str_new(0, len*sizeof(WCHAR));
553 WCHAR *wlibpath;
554 char *libpath;
555
556 while (wlibpath = (WCHAR *)RSTRING_PTR(wsopath),
557 ret = GetModuleFileNameW(libruby, wlibpath, len),
558 (ret == len))
559 {
560 rb_str_modify_expand(wsopath, len*sizeof(WCHAR));
561 rb_str_set_len(wsopath, (len += len)*sizeof(WCHAR));
562 }
563 if (!ret || ret > len) rb_fatal("failed to get module file name");
564 #if defined __CYGWIN__
565 {
566 const int win_to_posix = CCP_WIN_W_TO_POSIX | CCP_RELATIVE;
567 size_t newsize = cygwin_conv_path(win_to_posix, wlibpath, 0, 0);
568 if (!newsize) rb_fatal("failed to convert module path to cygwin");
569 path = rb_str_new(0, newsize);
570 libpath = RSTRING_PTR(path);
571 if (cygwin_conv_path(win_to_posix, wlibpath, libpath, newsize)) {
572 rb_str_resize(path, 0);
573 }
574 }
575 #else
576 {
577 DWORD i;
578 for (len = ret, i = 0; i < len; ++i) {
579 if (wlibpath[i] == L'\\') {
580 wlibpath[i] = L'/';
581 ret = i+1; /* chop after the last separator */
582 }
583 }
584 }
585 len = WideCharToMultiByte(CP_UTF8, 0, wlibpath, ret, NULL, 0, NULL, NULL);
586 path = rb_utf8_str_new(0, len);
587 libpath = RSTRING_PTR(path);
588 WideCharToMultiByte(CP_UTF8, 0, wlibpath, ret, libpath, len, NULL, NULL);
589 #endif
590 rb_str_resize(wsopath, 0);
591 return path;
592 #elif defined(HAVE_DLADDR)
593 Dl_info dli;
594 VALUE fname, path;
595 const void* addr = (void *)(VALUE)expand_include_path;
596
597 if (!dladdr((void *)addr, &dli)) {
598 return rb_str_new(0, 0);
599 }
600 #ifdef __linux__
601 else if (origarg.argc > 0 && origarg.argv && dli.dli_fname == origarg.argv[0]) {
602 fname = rb_str_new_cstr("/proc/self/exe");
603 path = rb_readlink(fname, NULL);
604 }
605 #endif
606 else {
607 fname = rb_str_new_cstr(dli.dli_fname);
608 path = rb_realpath_internal(Qnil, fname, 1);
609 }
610 rb_str_resize(fname, 0);
611 return path;
612 #else
613 # error relative load path is not supported on this platform.
614 #endif
615 }
616 #endif
617
618 #define INITIAL_LOAD_PATH_MARK rb_intern_const("@gem_prelude_index")
619
620 VALUE ruby_archlibdir_path, ruby_prefix_path;
621
622 void
623 ruby_init_loadpath(void)
624 {
625 VALUE load_path, archlibdir = 0;
626 ID id_initial_load_path_mark;
627 const char *paths = ruby_initial_load_paths;
628 #if defined LOAD_RELATIVE
629 #if !defined ENABLE_MULTIARCH
630 # define RUBY_ARCH_PATH ""
631 #elif defined RUBY_ARCH
632 # define RUBY_ARCH_PATH "/"RUBY_ARCH
633 #else
634 # define RUBY_ARCH_PATH "/"RUBY_PLATFORM
635 #endif
636 char *libpath;
637 VALUE sopath;
638 size_t baselen;
639 const char *p;
640
641 sopath = runtime_libruby_path();
642 libpath = RSTRING_PTR(sopath);
643
644 p = strrchr(libpath, '/');
645 if (p) {
646 static const char libdir[] = "/"
647 #ifdef LIBDIR_BASENAME
648 LIBDIR_BASENAME
649 #else
650 "lib"
651 #endif
652 RUBY_ARCH_PATH;
653 const ptrdiff_t libdir_len = (ptrdiff_t)sizeof(libdir)
654 - rb_strlen_lit(RUBY_ARCH_PATH) - 1;
655 static const char bindir[] = "/bin";
656 const ptrdiff_t bindir_len = (ptrdiff_t)sizeof(bindir) - 1;
657
658 const char *p2 = NULL;
659
660 #ifdef ENABLE_MULTIARCH
661 multiarch:
662 #endif
663 if (p - libpath >= bindir_len && !STRNCASECMP(p - bindir_len, bindir, bindir_len)) {
664 p -= bindir_len;
665 archlibdir = rb_str_subseq(sopath, 0, p - libpath);
666 rb_str_cat_cstr(archlibdir, libdir);
667 OBJ_FREEZE_RAW(archlibdir);
668 }
669 else if (p - libpath >= libdir_len && !strncmp(p - libdir_len, libdir, libdir_len)) {
670 archlibdir = rb_str_subseq(sopath, 0, (p2 ? p2 : p) - libpath);
671 OBJ_FREEZE_RAW(archlibdir);
672 p -= libdir_len;
673 }
674 #ifdef ENABLE_MULTIARCH
675 else if (p2) {
676 p = p2;
677 }
678 else {
679 p2 = p;
680 p = rb_enc_path_last_separator(libpath, p, rb_ascii8bit_encoding());
681 if (p) goto multiarch;
682 p = p2;
683 }
684 #endif
685 baselen = p - libpath;
686 }
687 else {
688 baselen = 0;
689 }
690 rb_str_resize(sopath, baselen);
691 libpath = RSTRING_PTR(sopath);
692 #define PREFIX_PATH() sopath
693 #define BASEPATH() rb_str_buf_cat(rb_str_buf_new(baselen+len), libpath, baselen)
694 #define RUBY_RELATIVE(path, len) rb_str_buf_cat(BASEPATH(), (path), (len))
695 #else
696 const size_t exec_prefix_len = strlen(ruby_exec_prefix);
697 #define RUBY_RELATIVE(path, len) rubylib_path_new((path), (len))
698 #define PREFIX_PATH() RUBY_RELATIVE(ruby_exec_prefix, exec_prefix_len)
699 #endif
700 rb_gc_register_address(&ruby_prefix_path);
701 ruby_prefix_path = PREFIX_PATH();
702 OBJ_FREEZE_RAW(ruby_prefix_path);
703 if (!archlibdir) archlibdir = ruby_prefix_path;
704 rb_gc_register_address(&ruby_archlibdir_path);
705 ruby_archlibdir_path = archlibdir;
706
707 load_path = GET_VM()->load_path;
708
709 ruby_push_include(getenv("RUBYLIB"), identical_path);
710
711 id_initial_load_path_mark = INITIAL_LOAD_PATH_MARK;
712 while (*paths) {
713 size_t len = strlen(paths);
714 VALUE path = RUBY_RELATIVE(paths, len);
715 rb_ivar_set(path, id_initial_load_path_mark, path);
716 rb_ary_push(load_path, path);
717 paths += len + 1;
718 }
719
720 rb_const_set(rb_cObject, rb_intern_const("TMP_RUBY_PREFIX"), ruby_prefix_path);
721 }
722
723
724 static void
725 add_modules(VALUE *req_list, const char *mod)
726 {
727 VALUE list = *req_list;
728 VALUE feature;
729
730 if (!list) {
731 *req_list = list = rb_ary_tmp_new(0);
732 }
733 feature = rb_str_cat_cstr(rb_str_tmp_new(0), mod);
734 rb_ary_push(list, feature);
735 }
736
737 static void
738 require_libraries(VALUE *req_list)
739 {
740 VALUE list = *req_list;
741 VALUE self = rb_vm_top_self();
742 ID require;
743 rb_encoding *extenc = rb_default_external_encoding();
744
745 CONST_ID(require, "require");
746 while (list && RARRAY_LEN(list) > 0) {
747 VALUE feature = rb_ary_shift(list);
748 rb_enc_associate(feature, extenc);
749 RBASIC_SET_CLASS_RAW(feature, rb_cString);
750 OBJ_FREEZE(feature);
751 rb_funcallv(self, require, 1, &feature);
752 }
753 *req_list = 0;
754 }
755
756 static const struct rb_block*
757 toplevel_context(rb_binding_t *bind)
758 {
759 return &bind->block;
760 }
761
762 static void
763 process_sflag(int *sflag)
764 {
765 if (*sflag > 0) {
766 long n;
767 const VALUE *args;
768 VALUE argv = rb_argv;
769
770 n = RARRAY_LEN(argv);
771 args = RARRAY_CONST_PTR(argv);
772 while (n > 0) {
773 VALUE v = *args++;
774 char *s = StringValuePtr(v);
775 char *p;
776 int hyphen = FALSE;
777
778 if (s[0] != '-')
779 break;
780 n--;
781 if (s[1] == '-' && s[2] == '\0')
782 break;
783
784 v = Qtrue;
785 /* check if valid name before replacing - with _ */
786 for (p = s + 1; *p; p++) {
787 if (*p == '=') {
788 *p++ = '\0';
789 v = rb_str_new2(p);
790 break;
791 }
792 if (*p == '-') {
793 hyphen = TRUE;
794 }
795 else if (*p != '_' && !ISALNUM(*p)) {
796 VALUE name_error[2];
797 name_error[0] =
798 rb_str_new2("invalid name for global variable - ");
799 if (!(p = strchr(p, '='))) {
800 rb_str_cat2(name_error[0], s);
801 }
802 else {
803 rb_str_cat(name_error[0], s, p - s);
804 }
805 name_error[1] = args[-1];
806 rb_exc_raise(rb_class_new_instance(2, name_error, rb_eNameError));
807 }
808 }
809 s[0] = '$';
810 if (hyphen) {
811 for (p = s + 1; *p; ++p) {
812 if (*p == '-')
813 *p = '_';
814 }
815 }
816 rb_gv_set(s, v);
817 }
818 n = RARRAY_LEN(argv) - n;
819 while (n--) {
820 rb_ary_shift(argv);
821 }
822 *sflag = -1;
823 }
824 }
825
826 static long proc_options(long argc, char **argv, ruby_cmdline_options_t *opt, int envopt);
827
828 static void
829 moreswitches(const char *s, ruby_cmdline_options_t *opt, int envopt)
830 {
831 long argc, i, len;
832 char **argv, *p;
833 const char *ap = 0;
834 VALUE argstr, argary;
835 void *ptr;
836
837 while (ISSPACE(*s)) s++;
838 if (!*s) return;
839 argstr = rb_str_tmp_new((len = strlen(s)) + (envopt!=0));
840 argary = rb_str_tmp_new(0);
841
842 p = RSTRING_PTR(argstr);
843 if (envopt) *p++ = ' ';
844 memcpy(p, s, len + 1);
845 ap = 0;
846 rb_str_cat(argary, (char *)&ap, sizeof(ap));
847 while (*p) {
848 ap = p;
849 rb_str_cat(argary, (char *)&ap, sizeof(ap));
850 while (*p && !ISSPACE(*p)) ++p;
851 if (!*p) break;
852 *p++ = '\0';
853 while (ISSPACE(*p)) ++p;
854 }
855 argc = RSTRING_LEN(argary) / sizeof(ap);
856 ap = 0;
857 rb_str_cat(argary, (char *)&ap, sizeof(ap));
858 argv = ptr = ALLOC_N(char *, argc);
859 MEMMOVE(argv, RSTRING_PTR(argary), char *, argc);
860
861 while ((i = proc_options(argc, argv, opt, envopt)) > 1 && envopt && (argc -= i) > 0) {
862 argv += i;
863 if (**argv != '-') {
864 *--*argv = '-';
865 }
866 if ((*argv)[1]) {
867 ++argc;
868 --argv;
869 }
870 }
871
872 ruby_xfree(ptr);
873 /* get rid of GC */
874 rb_str_resize(argary, 0);
875 rb_str_resize(argstr, 0);
876 }
877
878 static int
879 name_match_p(const char *name, const char *str, size_t len)
880 {
881 if (len == 0) return 0;
882 while (1) {
883 while (TOLOWER(*str) == *name) {
884 if (!--len || !*++str) return 1;
885 ++name;
886 }
887 if (*str != '-' && *str != '_') return 0;
888 while (ISALNUM(*name)) name++;
889 if (*name != '-' && *name != '_') return 0;
890 ++name;
891 ++str;
892 }
893 }
894
895 #define NAME_MATCH_P(name, str, len) \
896 ((len) < (int)sizeof(name) && name_match_p((name), (str), (len)))
897
898 #define UNSET_WHEN(name, bit, str, len) \
899 if (NAME_MATCH_P((name), (str), (len))) { \
900 *(unsigned int *)arg &= ~(bit); \
901 return; \
902 }
903
904 #define SET_WHEN(name, bit, str, len) \
905 if (NAME_MATCH_P((name), (str), (len))) { \
906 *(unsigned int *)arg |= (bit); \
907 return; \
908 }
909
910 #define LITERAL_NAME_ELEMENT(name) #name
911
912 static void
913 feature_option(const char *str, int len, void *arg, const unsigned int enable)
914 {
915 static const char list[] = EACH_FEATURES(LITERAL_NAME_ELEMENT, ", ");
916 ruby_features_t *argp = arg;
917 unsigned int mask = ~0U;
918 unsigned int set = 0U;
919 #if AMBIGUOUS_FEATURE_NAMES
920 int matched = 0;
921 # define FEATURE_FOUND ++matched
922 #else
923 # define FEATURE_FOUND goto found
924 #endif
925 #define SET_FEATURE(bit) \
926 if (NAME_MATCH_P(#bit, str, len)) {set |= mask = FEATURE_BIT(bit); FEATURE_FOUND;}
927 EACH_FEATURES(SET_FEATURE, ;);
928 if (NAME_MATCH_P("jit", str, len)) { // This allows you to cancel --jit
929 set |= mask = FEATURE_BIT(jit);
930 goto found;
931 }
932 if (NAME_MATCH_P("all", str, len)) {
933 // YJIT and MJIT cannot be enabled at the same time. We enable only one for --enable=all.
934 mask &= ~(FEATURE_BIT(yjit) | FEATURE_BIT(mjit)) | FEATURE_BIT(jit);
935 goto found;
936 }
937 #if AMBIGUOUS_FEATURE_NAMES
938 if (matched == 1) goto found;
939 if (matched > 1) {
940 VALUE mesg = rb_sprintf("ambiguous feature: `%.*s' (", len, str);
941 #define ADD_FEATURE_NAME(bit) \
942 if (FEATURE_BIT(bit) & set) { \
943 rb_str_cat_cstr(mesg, #bit); \
944 if (--matched) rb_str_cat_cstr(mesg, ", "); \
945 }
946 EACH_FEATURES(ADD_FEATURE_NAME, ;);
947 rb_str_cat_cstr(mesg, ")");
948 rb_exc_raise(rb_exc_new_str(rb_eRuntimeError, mesg));
949 #undef ADD_FEATURE_NAME
950 }
951 #else
952 (void)set;
953 #endif
954 rb_warn("unknown argument for --%s: `%.*s'",
955 enable ? "enable" : "disable", len, str);
956 rb_warn("features are [%.*s].", (int)strlen(list), list);
957 return;
958
959 found:
960 FEATURE_SET_TO(*argp, mask, (mask & enable));
961 return;
962 }
963
964 static void
965 enable_option(const char *str, int len, void *arg)
966 {
967 feature_option(str, len, arg, ~0U);
968 }
969
970 static void
971 disable_option(const char *str, int len, void *arg)
972 {
973 feature_option(str, len, arg, 0U);
974 }
975
976 RUBY_EXTERN const int ruby_patchlevel;
977 int ruby_env_debug_option(const char *str, int len, void *arg);
978
979 static void
980 debug_option(const char *str, int len, void *arg)
981 {
982 static const char list[] = EACH_DEBUG_FEATURES(LITERAL_NAME_ELEMENT, ", ");
983 ruby_features_t *argp = arg;
984 #define SET_WHEN_DEBUG(bit) \
985 if (NAME_MATCH_P(#bit, str, len)) { \
986 FEATURE_SET(*argp, DEBUG_BIT(bit)); \
987 return; \
988 }
989 EACH_DEBUG_FEATURES(SET_WHEN_DEBUG, ;);
990 #ifdef RUBY_DEVEL
991 if (ruby_patchlevel < 0 && ruby_env_debug_option(str, len, 0)) return;
992 #endif
993 rb_warn("unknown argument for --debug: `%.*s'", len, str);
994 rb_warn("debug features are [%.*s].", (int)strlen(list), list);
995 }
996
997 static void
998 dump_option(const char *str, int len, void *arg)
999 {
1000 static const char list[] = EACH_DUMPS(LITERAL_NAME_ELEMENT, ", ");
1001 #define SET_WHEN_DUMP(bit) SET_WHEN(#bit, DUMP_BIT(bit), str, len)
1002 EACH_DUMPS(SET_WHEN_DUMP, ;);
1003 rb_warn("don't know how to dump `%.*s',", len, str);
1004 rb_warn("but only [%.*s].", (int)strlen(list), list);
1005 }
1006
1007 static void
1008 set_option_encoding_once(const char *type, VALUE *name, const char *e, long elen)
1009 {
1010 VALUE ename;
1011
1012 if (!elen) elen = strlen(e);
1013 ename = rb_str_new(e, elen);
1014
1015 if (*name &&
1016 rb_funcall(ename, rb_intern("casecmp"), 1, *name) != INT2FIX(0)) {
1017 rb_raise(rb_eRuntimeError,
1018 "%s already set to %"PRIsVALUE, type, *name);
1019 }
1020 *name = ename;
1021 }
1022
1023 #define set_internal_encoding_once(opt, e, elen) \
1024 set_option_encoding_once("default_internal", &(opt)->intern.enc.name, (e), (elen))
1025 #define set_external_encoding_once(opt, e, elen) \
1026 set_option_encoding_once("default_external", &(opt)->ext.enc.name, (e), (elen))
1027 #define set_source_encoding_once(opt, e, elen) \
1028 set_option_encoding_once("source", &(opt)->src.enc.name, (e), (elen))
1029
1030 #define yjit_opt_match_noarg(s, l, name) \
1031 opt_match(s, l, name) && (*(s) ? (rb_warn("argument to --yjit-" name " is ignored"), 1) : 1)
1032 #define yjit_opt_match_arg(s, l, name) \
1033 opt_match(s, l, name) && (*(s) && *(s+1) ? 1 : (rb_raise(rb_eRuntimeError, "--yjit-" name " needs an argument"), 0))
1034
1035 #if YJIT_SUPPORTED_P
1036 static void
1037 setup_yjit_options(const char *s, struct rb_yjit_options *yjit_opt)
1038 {
1039 const size_t l = strlen(s);
1040 if (l == 0) {
1041 return;
1042 }
1043 else if (yjit_opt_match_arg(s, l, "exec-mem-size")) {
1044 yjit_opt->exec_mem_size = atoi(s + 1);
1045 }
1046 else if (yjit_opt_match_arg(s, l, "call-threshold")) {
1047 yjit_opt->call_threshold = atoi(s + 1);
1048 }
1049 else if (yjit_opt_match_arg(s, l, "max-versions")) {
1050 yjit_opt->max_versions = atoi(s + 1);
1051 }
1052 else if (yjit_opt_match_noarg(s, l, "greedy-versioning")) {
1053 yjit_opt->greedy_versioning = true;
1054 }
1055 else if (yjit_opt_match_noarg(s, l, "no-type-prop")) {
1056 yjit_opt->no_type_prop = true;
1057 }
1058 else if (yjit_opt_match_noarg(s, l, "stats")) {
1059 yjit_opt->gen_stats = true;
1060 }
1061 else {
1062 rb_raise(rb_eRuntimeError,
1063 "invalid yjit option `%s' (--help will show valid yjit options)", s);
1064 }
1065 }
1066 #endif
1067
1068 static long
1069 proc_options(long argc, char **argv, ruby_cmdline_options_t *opt, int envopt)
1070 {
1071 long n, argc0 = argc;
1072 const char *s;
1073 int warning = opt->warning;
1074
1075 if (argc <= 0 || !argv)
1076 return 0;
1077
1078 for (argc--, argv++; argc > 0; argc--, argv++) {
1079 const char *const arg = argv[0];
1080 if (!arg || arg[0] != '-' || !arg[1])
1081 break;
1082
1083 s = arg + 1;
1084 reswitch:
1085 switch (*s) {
1086 case 'a':
1087 if (envopt) goto noenvopt;
1088 opt->do_split = TRUE;
1089 s++;
1090 goto reswitch;
1091
1092 case 'p':
1093 if (envopt) goto noenvopt;
1094 opt->do_print = TRUE;
1095 /* through */
1096 case 'n':
1097 if (envopt) goto noenvopt;
1098 opt->do_loop = TRUE;
1099 s++;
1100 goto reswitch;
1101
1102 case 'd':
1103 ruby_debug = Qtrue;
1104 ruby_verbose = Qtrue;
1105 s++;
1106 goto reswitch;
1107
1108 case 'y':
1109 if (envopt) goto noenvopt;
1110 opt->dump |= DUMP_BIT(yydebug);
1111 s++;
1112 goto reswitch;
1113
1114 case 'v':
1115 if (opt->verbose) {
1116 s++;
1117 goto reswitch;
1118 }
1119 opt->dump |= DUMP_BIT(version_v);
1120 opt->verbose = 1;
1121 case 'w':
1122 if (!opt->warning) {
1123 warning = 1;
1124 ruby_verbose = Qtrue;
1125 }
1126 FEATURE_SET(opt->warn, RB_WARN_CATEGORY_ALL_BITS);
1127 s++;
1128 goto reswitch;
1129
1130 case 'W':
1131 if (s[1] == ':') {
1132 unsigned int bits = 0;
1133 static const char no_prefix[] = "no-";
1134 int enable = strncmp(s += 2, no_prefix, sizeof(no_prefix)-1) != 0;
1135 if (!enable) s += sizeof(no_prefix)-1;
1136 size_t len = strlen(s);
1137 if (NAME_MATCH_P("deprecated", s, len)) {
1138 bits = 1U << RB_WARN_CATEGORY_DEPRECATED;
1139 }
1140 else if (NAME_MATCH_P("experimental", s, len)) {
1141 bits = 1U << RB_WARN_CATEGORY_EXPERIMENTAL;
1142 }
1143 else {
1144 rb_warn("unknown warning category: `%s'", s);
1145 }
1146 if (bits) FEATURE_SET_TO(opt->warn, bits, enable ? bits : 0);
1147 break;
1148 }
1149 {
1150 size_t numlen;
1151 int v = 2; /* -W as -W2 */
1152
1153 if (*++s) {
1154 v = scan_oct(s, 1, &numlen);
1155 if (numlen == 0)
1156 v = 2;
1157 s += numlen;
1158 }
1159 if (!opt->warning) {
1160 switch (v) {
1161 case 0:
1162 ruby_verbose = Qnil;
1163 break;
1164 case 1:
1165 ruby_verbose = Qfalse;
1166 break;
1167 default:
1168 ruby_verbose = Qtrue;
1169 break;
1170 }
1171 }
1172 warning = 1;
1173 switch (v) {
1174 case 0:
1175 FEATURE_SET_TO(opt->warn, RB_WARN_CATEGORY_ALL_BITS, 0);
1176 break;
1177 case 1:
1178 FEATURE_SET_TO(opt->warn, 1U << RB_WARN_CATEGORY_DEPRECATED, 0);
1179 break;
1180 default:
1181 FEATURE_SET(opt->warn, RB_WARN_CATEGORY_ALL_BITS);
1182 break;
1183 }
1184 }
1185 goto reswitch;
1186
1187 case 'c':
1188 if (envopt) goto noenvopt;
1189 opt->dump |= DUMP_BIT(syntax);
1190 s++;
1191 goto reswitch;
1192
1193 case 's':
1194 if (envopt) goto noenvopt;
1195 forbid_setid("-s");
1196 if (!opt->sflag) opt->sflag = 1;
1197 s++;
1198 goto reswitch;
1199
1200 case 'h':
1201 if (envopt) goto noenvopt;
1202 opt->dump |= DUMP_BIT(usage);
1203 goto switch_end;
1204
1205 case 'l':
1206 if (envopt) goto noenvopt;
1207 opt->do_line = TRUE;
1208 rb_output_rs = rb_rs;
1209 s++;
1210 goto reswitch;
1211
1212 case 'S':
1213 if (envopt) goto noenvopt;
1214 forbid_setid("-S");
1215 opt->do_search = TRUE;
1216 s++;
1217 goto reswitch;
1218
1219 case 'e':
1220 if (envopt) goto noenvopt;
1221 forbid_setid("-e");
1222 if (!*++s) {
1223 if (!--argc)
1224 rb_raise(rb_eRuntimeError, "no code specified for -e");
1225 s = *++argv;
1226 }
1227 if (!opt->e_script) {
1228 opt->e_script = rb_str_new(0, 0);
1229 if (opt->script == 0)
1230 opt->script = "-e";
1231 }
1232 rb_str_cat2(opt->e_script, s);
1233 rb_str_cat2(opt->e_script, "\n");
1234 break;
1235
1236 case 'r':
1237 forbid_setid("-r");
1238 if (*++s) {
1239 add_modules(&opt->req_list, s);
1240 }
1241 else if (argc > 1) {
1242 add_modules(&opt->req_list, argv[1]);
1243 argc--, argv++;
1244 }
1245 break;
1246
1247 case 'i':
1248 if (envopt) goto noenvopt;
1249 forbid_setid("-i");
1250 ruby_set_inplace_mode(s + 1);
1251 break;
1252
1253 case 'x':
1254 if (envopt) goto noenvopt;
1255 forbid_setid("-x");
1256 opt->xflag = TRUE;
1257 s++;
1258 if (*s && chdir(s) < 0) {
1259 rb_fatal("Can't chdir to %s", s);
1260 }
1261 break;
1262
1263 case 'C':
1264 case 'X':
1265 if (envopt) goto noenvopt;
1266 if (!*++s && (!--argc || !(s = *++argv) || !*s)) {
1267 rb_fatal("Can't chdir");
1268 }
1269 if (chdir(s) < 0) {
1270 rb_fatal("Can't chdir to %s", s);
1271 }
1272 break;
1273
1274 case 'F':
1275 if (envopt) goto noenvopt;
1276 if (*++s) {
1277 rb_fs = rb_reg_new(s, strlen(s), 0);
1278 }
1279 break;
1280
1281 case 'E':
1282 if (!*++s && (!--argc || !(s = *++argv))) {
1283 rb_raise(rb_eRuntimeError, "missing argument for -E");
1284 }
1285 goto encoding;
1286
1287 case 'U':
1288 set_internal_encoding_once(opt, "UTF-8", 0);
1289 ++s;
1290 goto reswitch;
1291
1292 case 'K':
1293 if (*++s) {
1294 const char *enc_name = 0;
1295 switch (*s) {
1296 case 'E': case 'e':
1297 enc_name = "EUC-JP";
1298 break;
1299 case 'S': case 's':
1300 enc_name = "Windows-31J";
1301 break;
1302 case 'U': case 'u':
1303 enc_name = "UTF-8";
1304 break;
1305 case 'N': case 'n': case 'A': case 'a':
1306 enc_name = "ASCII-8BIT";
1307 break;
1308 }
1309 if (enc_name) {
1310 opt->src.enc.name = rb_str_new2(enc_name);
1311 if (!opt->ext.enc.name)
1312 opt->ext.enc.name = opt->src.enc.name;
1313 }
1314 s++;
1315 }
1316 goto reswitch;
1317
1318 case 'I':
1319 forbid_setid("-I");
1320 if (*++s)
1321 ruby_incpush_expand(s);
1322 else if (argc > 1) {
1323 ruby_incpush_expand(argv[1]);
1324 argc--, argv++;
1325 }
1326 break;
1327
1328 case '0':
1329 if (envopt) goto noenvopt;
1330 {
1331 size_t numlen;
1332 int v;
1333 char c;
1334
1335 v = scan_oct(s, 4, &numlen);
1336 s += numlen;
1337 if (v > 0377)
1338 rb_rs = Qnil;
1339 else if (v == 0 && numlen >= 2) {
1340 rb_rs = rb_str_new2("");
1341 }
1342 else {
1343 c = v & 0xff;
1344 rb_rs = rb_str_new(&c, 1);
1345 }
1346 }
1347 goto reswitch;
1348
1349 case '-':
1350 if (!s[1] || (s[1] == '\r' && !s[2])) {
1351 argc--, argv++;
1352 goto switch_end;
1353 }
1354 s++;
1355
1356 # define is_option_end(c, allow_hyphen) \
1357 (!(c) || ((allow_hyphen) && (c) == '-') || (c) == '=')
1358 # define check_envopt(name, allow_envopt) \
1359 (((allow_envopt) || !envopt) ? (void)0 : \
1360 rb_raise(rb_eRuntimeError, "invalid switch in RUBYOPT: --" name))
1361 # define need_argument(name, s, needs_arg, next_arg) \
1362 ((*(s) ? !*++(s) : (next_arg) && (!argc || !((s) = argv[1]) || (--argc, ++argv, 0))) && (needs_arg) ? \
1363 rb_raise(rb_eRuntimeError, "missing argument for --" name) \
1364 : (void)0)
1365 # define is_option_with_arg(name, allow_hyphen, allow_envopt) \
1366 is_option_with_optarg(name, allow_hyphen, allow_envopt, Qtrue, Qtrue)
1367 # define is_option_with_optarg(name, allow_hyphen, allow_envopt, needs_arg, next_arg) \
1368 (strncmp((name), s, n = sizeof(name) - 1) == 0 && is_option_end(s[n], (allow_hyphen)) && \
1369 (s[n] != '-' || s[n+1]) ? \
1370 (check_envopt(name, (allow_envopt)), s += n, \
1371 need_argument(name, s, needs_arg, next_arg), 1) : 0)
1372
1373 if (strcmp("copyright", s) == 0) {
1374 if (envopt) goto noenvopt_long;
1375 opt->dump |= DUMP_BIT(copyright);
1376 }
1377 else if (is_option_with_optarg("debug", Qtrue, Qtrue, Qfalse, Qfalse)) {
1378 if (s && *s) {
1379 ruby_each_words(s, debug_option, &opt->features);
1380 }
1381 else {
1382 ruby_debug = Qtrue;
1383 ruby_verbose = Qtrue;
1384 }
1385 }
1386 else if (is_option_with_arg("enable", Qtrue, Qtrue)) {
1387 ruby_each_words(s, enable_option, &opt->features);
1388 }
1389 else if (is_option_with_arg("disable", Qtrue, Qtrue)) {
1390 ruby_each_words(s, disable_option, &opt->features);
1391 }
1392 else if (is_option_with_arg("encoding", Qfalse, Qtrue)) {
1393 char *p;
1394 encoding:
1395 do {
1396 # define set_encoding_part(type) \
1397 if (!(p = strchr(s, ':'))) { \
1398 set_##type##_encoding_once(opt, s, 0); \
1399 break; \
1400 } \
1401 else if (p > s) { \
1402 set_##type##_encoding_once(opt, s, p-s); \
1403 }
1404 set_encoding_part(external);
1405 if (!*(s = ++p)) break;
1406 set_encoding_part(internal);
1407 if (!*(s = ++p)) break;
1408 #if defined ALLOW_DEFAULT_SOURCE_ENCODING && ALLOW_DEFAULT_SOURCE_ENCODING
1409 set_encoding_part(source);
1410 if (!*(s = ++p)) break;
1411 #endif
1412 rb_raise(rb_eRuntimeError, "extra argument for %s: %s",
1413 (arg[1] == '-' ? "--encoding" : "-E"), s);
1414 # undef set_encoding_part
1415 } while (0);
1416 }
1417 else if (is_option_with_arg("internal-encoding", Qfalse, Qtrue)) {
1418 set_internal_encoding_once(opt, s, 0);
1419 }
1420 else if (is_option_with_arg("external-encoding", Qfalse, Qtrue)) {
1421 set_external_encoding_once(opt, s, 0);
1422 }
1423 #if defined ALLOW_DEFAULT_SOURCE_ENCODING && ALLOW_DEFAULT_SOURCE_ENCODING
1424 else if (is_option_with_arg("source-encoding", Qfalse, Qtrue)) {
1425 set_source_encoding_once(opt, s, 0);
1426 }
1427 #endif
1428 else if (strcmp("version", s) == 0) {
1429 if (envopt) goto noenvopt_long;
1430 opt->dump |= DUMP_BIT(version);
1431 }
1432 else if (strcmp("verbose", s) == 0) {
1433 opt->verbose = 1;
1434 ruby_verbose = Qtrue;
1435 }
1436 else if (strcmp("jit", s) == 0) {
1437 #if !USE_MJIT
1438 rb_warn("Ruby was built without JIT support");
1439 #else
1440 FEATURE_SET(opt->features, FEATURE_BIT(jit));
1441 #endif
1442 }
1443 else if (is_option_with_optarg("mjit", '-', true, false, false)) {
1444 #if USE_MJIT
1445 extern void mjit_setup_options(const char *s, struct mjit_options *mjit_opt);
1446 FEATURE_SET(opt->features, FEATURE_BIT(mjit));
1447 mjit_setup_options(s, &opt->mjit);
1448 #else
1449 rb_warn("MJIT support is disabled.");
1450 #endif
1451 }
1452 else if (is_option_with_optarg("yjit", '-', true, false, false)) {
1453 #if YJIT_SUPPORTED_P
1454 FEATURE_SET(opt->features, FEATURE_BIT(yjit));
1455 setup_yjit_options(s, &opt->yjit);
1456 #else
1457 rb_warn("Ruby was built without JIT support");
1458 #endif
1459 }
1460 else if (strcmp("yydebug", s) == 0) {
1461 if (envopt) goto noenvopt_long;
1462 opt->dump |= DUMP_BIT(yydebug);
1463 }
1464 else if (is_option_with_arg("dump", Qfalse, Qfalse)) {
1465 ruby_each_words(s, dump_option, &opt->dump);
1466 }
1467 else if (strcmp("help", s) == 0) {
1468 if (envopt) goto noenvopt_long;
1469 opt->dump |= DUMP_BIT(help);
1470 goto switch_end;
1471 }
1472 else if (is_option_with_arg("backtrace-limit", Qfalse, Qfalse)) {
1473 char *e;
1474 long n = strtol(s, &e, 10);
1475 if (errno == ERANGE || n < 0 || *e) rb_raise(rb_eRuntimeError, "wrong limit for backtrace length");
1476 rb_backtrace_length_limit = n;
1477 }
1478 else {
1479 rb_raise(rb_eRuntimeError,
1480 "invalid option --%s (-h will show valid options)", s);
1481 }
1482 break;
1483
1484 case '\r':
1485 if (!s[1])
1486 break;
1487
1488 default:
1489 {
1490 rb_raise(rb_eRuntimeError,
1491 "invalid option -%c (-h will show valid options)",
1492 (int)(unsigned char)*s);
1493 }
1494 goto switch_end;
1495
1496 noenvopt:
1497 /* "EIdvwWrKU" only */
1498 rb_raise(rb_eRuntimeError, "invalid switch in RUBYOPT: -%c", *s);
1499 break;
1500
1501 noenvopt_long:
1502 rb_raise(rb_eRuntimeError, "invalid switch in RUBYOPT: --%s", s);
1503 break;
1504
1505 case 0:
1506 break;
1507 # undef is_option_end
1508 # undef check_envopt
1509 # undef need_argument
1510 # undef is_option_with_arg
1511 # undef is_option_with_optarg
1512 }
1513 }
1514
1515 switch_end:
1516 if (warning) opt->warning = warning;
1517 return argc0 - argc;
1518 }
1519
1520 void Init_builtin_features(void);
1521
1522 static void
1523 ruby_init_prelude(void)
1524 {
1525 Init_builtin_features();
1526 rb_const_remove(rb_cObject, rb_intern_const("TMP_RUBY_PREFIX"));
1527 }
1528
1529 void rb_call_builtin_inits(void);
1530
1531 static void
1532 ruby_opt_init(ruby_cmdline_options_t *opt)
1533 {
1534 if (opt->dump & dump_exit_bits) return;
1535
1536 if (opt->features.set & FEATURE_BIT(gems)) {
1537 rb_define_module("Gem");
1538 if (opt->features.set & FEATURE_BIT(error_highlight)) {
1539 rb_define_module("ErrorHighlight");
1540 }
1541 if (opt->features.set & FEATURE_BIT(did_you_mean)) {
1542 rb_define_module("DidYouMean");
1543 }
1544 }
1545
1546 rb_warning_category_update(opt->warn.mask, opt->warn.set);
1547
1548 Init_ext(); /* load statically linked extensions before rubygems */
1549 rb_call_builtin_inits();
1550 ruby_init_prelude();
1551
1552 ruby_set_script_name(opt->script_name);
1553 require_libraries(&opt->req_list);
1554 }
1555
1556 static int
1557 opt_enc_index(VALUE enc_name)
1558 {
1559 const char *s = RSTRING_PTR(enc_name);
1560 int i = rb_enc_find_index(s);
1561
1562 if (i < 0) {
1563 rb_raise(rb_eRuntimeError, "unknown encoding name - %s", s);
1564 }
1565 else if (rb_enc_dummy_p(rb_enc_from_index(i))) {
1566 rb_raise(rb_eRuntimeError, "dummy encoding is not acceptable - %s ", s);
1567 }
1568 return i;
1569 }
1570
1571 #define rb_progname (GET_VM()->progname)
1572 #define rb_orig_progname (GET_VM()->orig_progname)
1573 VALUE rb_argv0;
1574 VALUE rb_e_script;
1575
1576 static VALUE
1577 false_value(ID _x, VALUE *_y)
1578 {
1579 return Qfalse;
1580 }
1581
1582 static VALUE
1583 true_value(ID _x, VALUE *_y)
1584 {
1585 return Qtrue;
1586 }
1587
1588 #define rb_define_readonly_boolean(name, val) \
1589 rb_define_virtual_variable((name), (val) ? true_value : false_value, 0)
1590
1591 static VALUE
1592 uscore_get(void)
1593 {
1594 VALUE line;
1595
1596 line = rb_lastline_get();
1597 if (!RB_TYPE_P(line, T_STRING)) {
1598 rb_raise(rb_eTypeError, "$_ value need to be String (%s given)",
1599 NIL_P(line) ? "nil" : rb_obj_classname(line));
1600 }
1601 return line;
1602 }
1603
1604 /*
1605 * call-seq:
1606 * sub(pattern, replacement) -> $_
1607 * sub(pattern) {|...| block } -> $_
1608 *
1609 * Equivalent to <code>$_.sub(<i>args</i>)</code>, except that
1610 * <code>$_</code> will be updated if substitution occurs.
1611 * Available only when -p/-n command line option specified.
1612 */
1613
1614 static VALUE
1615 rb_f_sub(int argc, VALUE *argv, VALUE _)
1616 {
1617 VALUE str = rb_funcall_passing_block(uscore_get(), rb_intern("sub"), argc, argv);
1618 rb_lastline_set(str);
1619 return str;
1620 }
1621
1622 /*
1623 * call-seq:
1624 * gsub(pattern, replacement) -> $_
1625 * gsub(pattern) {|...| block } -> $_
1626 *
1627 * Equivalent to <code>$_.gsub...</code>, except that <code>$_</code>
1628 * will be updated if substitution occurs.
1629 * Available only when -p/-n command line option specified.
1630 *
1631 */
1632
1633 static VALUE
1634 rb_f_gsub(int argc, VALUE *argv, VALUE _)
1635 {
1636 VALUE str = rb_funcall_passing_block(uscore_get(), rb_intern("gsub"), argc, argv);
1637 rb_lastline_set(str);
1638 return str;
1639 }
1640
1641 /*
1642 * call-seq:
1643 * chop -> $_
1644 *
1645 * Equivalent to <code>($_.dup).chop!</code>, except <code>nil</code>
1646 * is never returned. See String#chop!.
1647 * Available only when -p/-n command line option specified.
1648 *
1649 */
1650
1651 static VALUE
1652 rb_f_chop(VALUE _)
1653 {
1654 VALUE str = rb_funcall_passing_block(uscore_get(), rb_intern("chop"), 0, 0);
1655 rb_lastline_set(str);
1656 return str;
1657 }
1658
1659
1660 /*
1661 * call-seq:
1662 * chomp -> $_
1663 * chomp(string) -> $_
1664 *
1665 * Equivalent to <code>$_ = $_.chomp(<em>string</em>)</code>. See
1666 * String#chomp.
1667 * Available only when -p/-n command line option specified.
1668 *
1669 */
1670
1671 static VALUE
1672 rb_f_chomp(int argc, VALUE *argv, VALUE _)
1673 {
1674 VALUE str = rb_funcall_passing_block(uscore_get(), rb_intern("chomp"), argc, argv);
1675 rb_lastline_set(str);
1676 return str;
1677 }
1678
1679 static void
1680 setup_pager_env(void)
1681 {
1682 if (!getenv("LESS")) ruby_setenv("LESS", "-R"); // Output "raw" control characters.
1683 }
1684
1685 #ifdef _WIN32
1686 static int
1687 tty_enabled(void)
1688 {
1689 HANDLE h = GetStdHandle(STD_OUTPUT_HANDLE);
1690 DWORD m;
1691 if (!GetConsoleMode(h, &m)) return 0;
1692 # ifndef ENABLE_VIRTUAL_TERMINAL_PROCESSING
1693 # define ENABLE_VIRTUAL_TERMINAL_PROCESSING 0x4
1694 # endif
1695 if (!(m & ENABLE_VIRTUAL_TERMINAL_PROCESSING)) return 0;
1696 return 1;
1697 }
1698 #elif !defined(HAVE_WORKING_FORK)
1699 # define tty_enabled() 0
1700 #endif
1701
1702 static VALUE
1703 copy_str(VALUE str, rb_encoding *enc, bool intern)
1704 {
1705 if (!intern) {
1706 if (rb_enc_str_coderange_scan(str, enc) == ENC_CODERANGE_BROKEN)
1707 return 0;
1708 return rb_enc_associate(rb_str_dup(str), enc);
1709 }
1710 return rb_enc_interned_str(RSTRING_PTR(str), RSTRING_LEN(str), enc);
1711 }
1712
1713 static VALUE
1714 process_options(int argc, char **argv, ruby_cmdline_options_t *opt)
1715 {
1716 rb_ast_t *ast = 0;
1717 VALUE parser;
1718 VALUE script_name;
1719 const rb_iseq_t *iseq;
1720 rb_encoding *enc, *lenc;
1721 #if UTF8_PATH
1722 rb_encoding *ienc = 0;
1723 rb_encoding *const uenc = rb_utf8_encoding();
1724 #endif
1725 const char *s;
1726 char fbuf[MAXPATHLEN];
1727 int i = (int)proc_options(argc, argv, opt, 0);
1728 unsigned int dump = opt->dump & dump_exit_bits;
1729 rb_vm_t *vm = GET_VM();
1730 const long loaded_before_enc = RARRAY_LEN(vm->loaded_features);
1731
1732 if (opt->dump & (DUMP_BIT(usage)|DUMP_BIT(help))) {
1733 int tty = isatty(1);
1734 const char *const progname =
1735 (argc > 0 && argv && argv[0] ? argv[0] :
1736 origarg.argc > 0 && origarg.argv && origarg.argv[0] ? origarg.argv[0] :
1737 ruby_engine);
1738 int columns = 0;
1739 if ((opt->dump & DUMP_BIT(help)) && tty) {
1740 const char *pager_env = getenv("RUBY_PAGER");
1741 if (!pager_env) pager_env = getenv("PAGER");
1742 if (pager_env && *pager_env && isatty(0)) {
1743 const char *columns_env = getenv("COLUMNS");
1744 if (columns_env) columns = atoi(columns_env);
1745 VALUE pager = rb_str_new_cstr(pager_env);
1746 #ifdef HAVE_WORKING_FORK
1747 int fds[2];
1748 if (rb_pipe(fds) == 0) {
1749 rb_pid_t pid = rb_fork();
1750 if (pid > 0) {
1751 /* exec PAGER with reading from child */
1752 dup2(fds[0], 0);
1753 }
1754 else if (pid == 0) {
1755 /* send the help message to the parent PAGER */
1756 dup2(fds[1], 1);
1757 dup2(fds[1], 2);
1758 }
1759 close(fds[0]);
1760 close(fds[1]);
1761 if (pid > 0) {
1762 setup_pager_env();
1763 rb_f_exec(1, &pager);
1764 kill(SIGTERM, pid);
1765 rb_waitpid(pid, 0, 0);
1766 }
1767 }
1768 #else
1769 setup_pager_env();
1770 VALUE port = rb_io_popen(pager, rb_str_new_lit("w"), Qnil, Qnil);
1771 if (!NIL_P(port)) {
1772 int oldout = dup(1);
1773 int olderr = dup(2);
1774 int fd = RFILE(port)->fptr->fd;
1775 tty = tty_enabled();
1776 dup2(fd, 1);
1777 dup2(fd, 2);
1778 usage(progname, 1, tty, columns);
1779 fflush(stdout);
1780 dup2(oldout, 1);
1781 dup2(olderr, 2);
1782 rb_io_close(port);
1783 return Qtrue;
1784 }
1785 #endif
1786 }
1787 }
1788 usage(progname, (opt->dump & DUMP_BIT(help)), tty, columns);
1789 return Qtrue;
1790 }
1791
1792 argc -= i;
1793 argv += i;
1794
1795 if ((opt->features.set & FEATURE_BIT(rubyopt)) && (s = getenv("RUBYOPT"))) {
1796 VALUE src_enc_name = opt->src.enc.name;
1797 VALUE ext_enc_name = opt->ext.enc.name;
1798 VALUE int_enc_name = opt->intern.enc.name;
1799 ruby_features_t feat = opt->features;
1800 ruby_features_t warn = opt->warn;
1801
1802 opt->src.enc.name = opt->ext.enc.name = opt->intern.enc.name = 0;
1803 moreswitches(s, opt, 1);
1804 if (src_enc_name)
1805 opt->src.enc.name = src_enc_name;
1806 if (ext_enc_name)
1807 opt->ext.enc.name = ext_enc_name;
1808 if (int_enc_name)
1809 opt->intern.enc.name = int_enc_name;
1810 FEATURE_SET_RESTORE(opt->features, feat);
1811 FEATURE_SET_RESTORE(opt->warn, warn);
1812 }
1813
1814 if (opt->src.enc.name)
1815 /* cannot set deprecated category, as enabling deprecation warnings based on flags
1816 * has not happened yet.
1817 */
1818 rb_warning("-K is specified; it is for 1.8 compatibility and may cause odd behavior");
1819
1820 #if USE_MJIT
1821 if (opt->features.set & FEATURE_BIT(mjit)) {
1822 opt->mjit.on = TRUE; /* set mjit.on for ruby_show_version() API and check to call mjit_init() */
1823 }
1824 #endif
1825 if (opt->features.set & FEATURE_BIT(yjit)) {
1826 #if USE_MJIT
1827 if (opt->mjit.on) {
1828 rb_warn("MJIT and YJIT cannot both be enabled at the same time. Exiting");
1829 exit(1);
1830 }
1831 #endif
1832 #if YJIT_SUPPORTED_P
1833 rb_yjit_init(&opt->yjit);
1834 #endif
1835 }
1836 if (opt->dump & (DUMP_BIT(version) | DUMP_BIT(version_v))) {
1837 #if USE_MJIT
1838 mjit_opts.on = opt->mjit.on; /* used by ruby_show_version(). mjit_init() still can't be called here. */
1839 #endif
1840 ruby_show_version();
1841 if (opt->dump & DUMP_BIT(version)) return Qtrue;
1842 }
1843 if (opt->dump & DUMP_BIT(copyright)) {
1844 ruby_show_copyright();
1845 return Qtrue;
1846 }
1847
1848 if (!opt->e_script) {
1849 if (argc <= 0) { /* no more args */
1850 if (opt->verbose)
1851 return Qtrue;
1852 opt->script = "-";
1853 }
1854 else {
1855 opt->script = argv[0];
1856 if (!opt->script || opt->script[0] == '\0') {
1857 opt->script = "-";
1858 }
1859 else if (opt->do_search) {
1860 const char *path = getenv("RUBYPATH");
1861
1862 opt->script = 0;
1863 if (path) {
1864 opt->script = dln_find_file_r(argv[0], path, fbuf, sizeof(fbuf));
1865 }
1866 if (!opt->script) {
1867 opt->script = dln_find_file_r(argv[0], getenv(PATH_ENV), fbuf, sizeof(fbuf));
1868 }
1869 if (!opt->script)
1870 opt->script = argv[0];
1871 }
1872 argc--;
1873 argv++;
1874 }
1875 if (opt->script[0] == '-' && !opt->script[1]) {
1876 forbid_setid("program input from stdin");
1877 }
1878 }
1879
1880 opt->script_name = rb_str_new_cstr(opt->script);
1881 opt->script = RSTRING_PTR(opt->script_name);
1882
1883 #ifdef _WIN32
1884 translit_char_bin(RSTRING_PTR(opt->script_name), '\\', '/');
1885 #elif defined DOSISH
1886 translit_char(RSTRING_PTR(opt->script_name), '\\', '/');
1887 #endif
1888
1889 ruby_gc_set_params();
1890 ruby_init_loadpath();
1891
1892 #if USE_MJIT
1893 if (opt->mjit.on)
1894 /* Using TMP_RUBY_PREFIX created by ruby_init_loadpath(). */
1895 mjit_init(&opt->mjit);
1896 #endif
1897
1898 Init_ruby_description();
1899 Init_enc();
1900 lenc = rb_locale_encoding();
1901 rb_enc_associate(rb_progname, lenc);
1902 rb_obj_freeze(rb_progname);
1903 parser = rb_parser_new();
1904 if (opt->dump & DUMP_BIT(yydebug)) {
1905 rb_parser_set_yydebug(parser, Qtrue);
1906 }
1907 if (opt->ext.enc.name != 0) {
1908 opt->ext.enc.index = opt_enc_index(opt->ext.enc.name);
1909 }
1910 if (opt->intern.enc.name != 0) {
1911 opt->intern.enc.index = opt_enc_index(opt->intern.enc.name);
1912 }
1913 if (opt->src.enc.name != 0) {
1914 opt->src.enc.index = opt_enc_index(opt->src.enc.name);
1915 src_encoding_index = opt->src.enc.index;
1916 }
1917 if (opt->ext.enc.index >= 0) {
1918 enc = rb_enc_from_index(opt->ext.enc.index);
1919 }
1920 else {
1921 enc = IF_UTF8_PATH(uenc, lenc);
1922 }
1923 rb_enc_set_default_external(rb_enc_from_encoding(enc));
1924 if (opt->intern.enc.index >= 0) {
1925 enc = rb_enc_from_index(opt->intern.enc.index);
1926 rb_enc_set_default_internal(rb_enc_from_encoding(enc));
1927 opt->intern.enc.index = -1;
1928 #if UTF8_PATH
1929 ienc = enc;
1930 #endif
1931 }
1932 script_name = opt->script_name;
1933 rb_enc_associate(opt->script_name, IF_UTF8_PATH(uenc, lenc));
1934 #if UTF8_PATH
1935 if (uenc != lenc) {
1936 opt->script_name = str_conv_enc(opt->script_name, uenc, lenc);
1937 opt->script = RSTRING_PTR(opt->script_name);
1938 }
1939 #endif
1940 rb_obj_freeze(opt->script_name);
1941 if (IF_UTF8_PATH(uenc != lenc, 1)) {
1942 long i;
1943 VALUE load_path = vm->load_path;
1944 const ID id_initial_load_path_mark = INITIAL_LOAD_PATH_MARK;
1945 int modifiable = FALSE;
1946
1947 rb_get_expanded_load_path();
1948 for (i = 0; i < RARRAY_LEN(load_path); ++i) {
1949 VALUE path = RARRAY_AREF(load_path, i);
1950 int mark = rb_attr_get(path, id_initial_load_path_mark) == path;
1951 #if UTF8_PATH
1952 VALUE newpath = rb_str_conv_enc(path, uenc, lenc);
1953 if (newpath == path) continue;
1954 path = newpath;
1955 #else
1956 if (!(path = copy_str(path, lenc, !mark))) continue;
1957 #endif
1958 if (mark) rb_ivar_set(path, id_initial_load_path_mark, path);
1959 if (!modifiable) {
1960 rb_ary_modify(load_path);
1961 modifiable = TRUE;
1962 }
1963 RARRAY_ASET(load_path, i, path);
1964 }
1965 if (modifiable) {
1966 rb_ary_replace(vm->load_path_snapshot, load_path);
1967 }
1968 }
1969 {
1970 VALUE loaded_features = vm->loaded_features;
1971 bool modified = false;
1972 for (long i = loaded_before_enc; i < RARRAY_LEN(loaded_features); ++i) {
1973 VALUE path = RARRAY_AREF(loaded_features, i);
1974 if (!(path = copy_str(path, IF_UTF8_PATH(uenc, lenc), true))) continue;
1975 if (!modified) {
1976 rb_ary_modify(loaded_features);
1977 modified = true;
1978 }
1979 RARRAY_ASET(loaded_features, i, path);
1980 }
1981 if (modified) {
1982 rb_ary_replace(vm->loaded_features_snapshot, loaded_features);
1983 }
1984 }
1985
1986 if (opt->features.mask & COMPILATION_FEATURES) {
1987 VALUE option = rb_hash_new();
1988 #define SET_COMPILE_OPTION(h, o, name) \
1989 rb_hash_aset((h), ID2SYM(rb_intern_const(#name)), \
1990 RBOOL(FEATURE_SET_P(o->features, FEATURE_BIT(name))));
1991 SET_COMPILE_OPTION(option, opt, frozen_string_literal);
1992 SET_COMPILE_OPTION(option, opt, debug_frozen_string_literal);
1993 rb_funcallv(rb_cISeq, rb_intern_const("compile_option="), 1, &option);
1994 #undef SET_COMPILE_OPTION
1995 }
1996 ruby_set_argv(argc, argv);
1997 process_sflag(&opt->sflag);
1998
1999 rb_parser_set_context(parser, 0, TRUE);
2000
2001 if (opt->e_script) {
2002 VALUE progname = rb_progname;
2003 rb_encoding *eenc;
2004 if (opt->src.enc.index >= 0) {
2005 eenc = rb_enc_from_index(opt->src.enc.index);
2006 }
2007 else {
2008 eenc = lenc;
2009 #if UTF8_PATH
2010 if (ienc) eenc = ienc;
2011 #endif
2012 }
2013 #if UTF8_PATH
2014 if (eenc != uenc) {
2015 opt->e_script = str_conv_enc(opt->e_script, uenc, eenc);
2016 }
2017 #endif
2018 rb_enc_associate(opt->e_script, eenc);
2019 ruby_opt_init(opt);
2020 ruby_set_script_name(progname);
2021 rb_parser_set_options(parser, opt->do_print, opt->do_loop,
2022 opt->do_line, opt->do_split);
2023 ast = rb_parser_compile_string(parser, opt->script, opt->e_script, 1);
2024 }
2025 else {
2026 VALUE f;
2027 f = open_load_file(script_name, &opt->xflag);
2028 ast = load_file(parser, opt->script_name, f, 1, opt);
2029 }
2030 ruby_set_script_name(opt->script_name);
2031 if (dump & DUMP_BIT(yydebug)) {
2032 dump &= ~DUMP_BIT(yydebug);
2033 if (!dump) return Qtrue;
2034 }
2035
2036 if (opt->ext.enc.index >= 0) {
2037 enc = rb_enc_from_index(opt->ext.enc.index);
2038 }
2039 else {
2040 enc = IF_UTF8_PATH(uenc, lenc);
2041 }
2042 rb_enc_set_default_external(rb_enc_from_encoding(enc));
2043 if (opt->intern.enc.index >= 0) {
2044 /* Set in the shebang line */
2045 enc = rb_enc_from_index(opt->intern.enc.index);
2046 rb_enc_set_default_internal(rb_enc_from_encoding(enc));
2047 }
2048 else if (!rb_default_internal_encoding())
2049 /* Freeze default_internal */
2050 rb_enc_set_default_internal(Qnil);
2051 rb_stdio_set_default_encoding();
2052
2053 if (!ast->body.root) {
2054 rb_ast_dispose(ast);
2055 return Qfalse;
2056 }
2057
2058 process_sflag(&opt->sflag);
2059 opt->xflag = 0;
2060
2061 if (dump & DUMP_BIT(syntax)) {
2062 printf("Syntax OK\n");
2063 dump &= ~DUMP_BIT(syntax);
2064 if (!dump) return Qtrue;
2065 }
2066
2067 if (opt->do_loop) {
2068 rb_define_global_function("sub", rb_f_sub, -1);
2069 rb_define_global_function("gsub", rb_f_gsub, -1);
2070 rb_define_global_function("chop", rb_f_chop, 0);
2071 rb_define_global_function("chomp", rb_f_chomp, -1);
2072 }
2073
2074 if (dump & (DUMP_BIT(parsetree)|DUMP_BIT(parsetree_with_comment))) {
2075 rb_io_write(rb_stdout, rb_parser_dump_tree(ast->body.root, dump & DUMP_BIT(parsetree_with_comment)));
2076 rb_io_flush(rb_stdout);
2077 dump &= ~DUMP_BIT(parsetree)&~DUMP_BIT(parsetree_with_comment);
2078 if (!dump) {
2079 rb_ast_dispose(ast);
2080 return Qtrue;
2081 }
2082 }
2083
2084 {
2085 VALUE path = Qnil;
2086 if (!opt->e_script && strcmp(opt->script, "-")) {
2087 path = rb_realpath_internal(Qnil, script_name, 1);
2088 #if UTF8_PATH
2089 if (uenc != lenc) {
2090 path = str_conv_enc(path, uenc, lenc);
2091 }
2092 #endif
2093 if (!ENCODING_GET(path)) { /* ASCII-8BIT */
2094 rb_enc_copy(path, opt->script_name);
2095 }
2096 }
2097
2098 rb_binding_t *toplevel_binding;
2099 GetBindingPtr(rb_const_get(rb_cObject, rb_intern("TOPLEVEL_BINDING")),
2100 toplevel_binding);
2101 const struct rb_block *base_block = toplevel_context(toplevel_binding);
2102 iseq = rb_iseq_new_main(&ast->body, opt->script_name, path, vm_block_iseq(base_block), !(dump & DUMP_BIT(insns_without_opt)));
2103 rb_ast_dispose(ast);
2104 }
2105
2106 if (dump & (DUMP_BIT(insns) | DUMP_BIT(insns_without_opt))) {
2107 rb_io_write(rb_stdout, rb_iseq_disasm((const rb_iseq_t *)iseq));
2108 rb_io_flush(rb_stdout);
2109 dump &= ~DUMP_BIT(insns);
2110 if (!dump) return Qtrue;
2111 }
2112 if (opt->dump & dump_exit_bits) return Qtrue;
2113
2114 rb_define_readonly_boolean("$-p", opt->do_print);
2115 rb_define_readonly_boolean("$-l", opt->do_line);
2116 rb_define_readonly_boolean("$-a", opt->do_split);
2117
2118 rb_gvar_ractor_local("$-p");
2119 rb_gvar_ractor_local("$-l");
2120 rb_gvar_ractor_local("$-a");
2121
2122 if ((rb_e_script = opt->e_script) != 0) {
2123 rb_str_freeze(rb_e_script);
2124 rb_gc_register_mark_object(opt->e_script);
2125 }
2126
2127 {
2128 rb_execution_context_t *ec = GET_EC();
2129
2130 if (opt->e_script) {
2131 /* -e */
2132 rb_exec_event_hook_script_compiled(ec, iseq, opt->e_script);
2133 }
2134 else {
2135 /* file */
2136 rb_exec_event_hook_script_compiled(ec, iseq, Qnil);
2137 }
2138 }
2139 return (VALUE)iseq;
2140 }
2141
2142 #ifndef DOSISH
2143 static void
2144 warn_cr_in_shebang(const char *str, long len)
2145 {
2146 if (str[len-1] == '\n' && str[len-2] == '\r') {
2147 rb_warn("shebang line ending with \\r may cause problems");
2148 }
2149 }
2150 #else
2151 #define warn_cr_in_shebang(str, len) (void)0
2152 #endif
2153
2154 struct load_file_arg {
2155 VALUE parser;
2156 VALUE fname;
2157 int script;
2158 ruby_cmdline_options_t *opt;
2159 VALUE f;
2160 };
2161
2162 static VALUE
2163 load_file_internal(VALUE argp_v)
2164 {
2165 struct load_file_arg *argp = (struct load_file_arg *)argp_v;
2166 VALUE parser = argp->parser;
2167 VALUE orig_fname = argp->fname;
2168 int script = argp->script;
2169 ruby_cmdline_options_t *opt = argp->opt;
2170 VALUE f = argp->f;
2171 int line_start = 1;
2172 rb_ast_t *ast = 0;
2173 rb_encoding *enc;
2174 ID set_encoding;
2175
2176 CONST_ID(set_encoding, "set_encoding");
2177 if (script) {
2178 VALUE c = 1; /* something not nil */
2179 VALUE line;
2180 char *p, *str;
2181 long len;
2182 int no_src_enc = !opt->src.enc.name;
2183 int no_ext_enc = !opt->ext.enc.name;
2184 int no_int_enc = !opt->intern.enc.name;
2185
2186 enc = rb_ascii8bit_encoding();
2187 rb_funcall(f, set_encoding, 1, rb_enc_from_encoding(enc));
2188
2189 if (opt->xflag) {
2190 line_start--;
2191 search_shebang:
2192 while (!NIL_P(line = rb_io_gets(f))) {
2193 line_start++;
2194 RSTRING_GETMEM(line, str, len);
2195 if (len > 2 && str[0] == '#' && str[1] == '!') {
2196 if (line_start == 1) warn_cr_in_shebang(str, len);
2197 if ((p = strstr(str+2, ruby_engine)) != 0) {
2198 goto start_read;
2199 }
2200 }
2201 }
2202 rb_loaderror("no Ruby script found in input");
2203 }
2204
2205 c = rb_io_getbyte(f);
2206 if (c == INT2FIX('#')) {
2207 c = rb_io_getbyte(f);
2208 if (c == INT2FIX('!') && !NIL_P(line = rb_io_gets(f))) {
2209 RSTRING_GETMEM(line, str, len);
2210 warn_cr_in_shebang(str, len);
2211 if ((p = strstr(str, ruby_engine)) == 0) {
2212 /* not ruby script, assume -x flag */
2213 goto search_shebang;
2214 }
2215
2216 start_read:
2217 str += len - 1;
2218 if (*str == '\n') *str-- = '\0';
2219 if (*str == '\r') *str-- = '\0';
2220 /* ruby_engine should not contain a space */
2221 if ((p = strstr(p, " -")) != 0) {
2222 opt->warning = 0;
2223 moreswitches(p + 1, opt, 0);
2224 }
2225
2226 /* push back shebang for pragma may exist in next line */
2227 rb_io_ungetbyte(f, rb_str_new2("!\n"));
2228 }
2229 else if (!NIL_P(c)) {
2230 rb_io_ungetbyte(f, c);
2231 }
2232 rb_io_ungetbyte(f, INT2FIX('#'));
2233 if (no_src_enc && opt->src.enc.name) {
2234 opt->src.enc.index = opt_enc_index(opt->src.enc.name);
2235 src_encoding_index = opt->src.enc.index;
2236 }
2237 if (no_ext_enc && opt->ext.enc.name) {
2238 opt->ext.enc.index = opt_enc_index(opt->ext.enc.name);
2239 }
2240 if (no_int_enc && opt->intern.enc.name) {
2241 opt->intern.enc.index = opt_enc_index(opt->intern.enc.name);
2242 }
2243 }
2244 else if (!NIL_P(c)) {
2245 rb_io_ungetbyte(f, c);
2246 }
2247 if (NIL_P(c)) {
2248 argp->f = f = Qnil;
2249 }
2250 ruby_opt_init(opt);
2251 }
2252 if (opt->src.enc.index >= 0) {
2253 enc = rb_enc_from_index(opt->src.enc.index);
2254 }
2255 else if (f == rb_stdin) {
2256 enc = rb_locale_encoding();
2257 }
2258 else {
2259 enc = rb_utf8_encoding();
2260 }
2261 rb_parser_set_options(parser, opt->do_print, opt->do_loop,
2262 opt->do_line, opt->do_split);
2263 if (NIL_P(f)) {
2264 f = rb_str_new(0, 0);
2265 rb_enc_associate(f, enc);
2266 return (VALUE)rb_parser_compile_string_path(parser, orig_fname, f, line_start);
2267 }
2268 rb_funcall(f, set_encoding, 2, rb_enc_from_encoding(enc), rb_str_new_cstr("-"));
2269 ast = rb_parser_compile_file_path(parser, orig_fname, f, line_start);
2270 rb_funcall(f, set_encoding, 1, rb_parser_encoding(parser));
2271 if (script && rb_parser_end_seen_p(parser)) {
2272 /*
2273 * DATA is a File that contains the data section of the executed file.
2274 * To create a data section use <tt>__END__</tt>:
2275 *
2276 * $ cat t.rb
2277 * puts DATA.gets
2278 * __END__
2279 * hello world!
2280 *
2281 * $ ruby t.rb
2282 * hello world!
2283 */
2284 rb_define_global_const("DATA", f);
2285 argp->f = Qnil;
2286 }
2287 return (VALUE)ast;
2288 }
2289
2290 /* disabling O_NONBLOCK, and returns 0 on success, otherwise errno */
2291 static inline int
2292 disable_nonblock(int fd)
2293 {
2294 #if defined(HAVE_FCNTL) && defined(F_SETFL)
2295 if (fcntl(fd, F_SETFL, 0) < 0) {
2296 const int e = errno;
2297 ASSUME(e != 0);
2298 # if defined ENOTSUP
2299 if (e == ENOTSUP) return 0;
2300 # endif
2301 # if defined B_UNSUPPORTED
2302 if (e == B_UNSUPPORTED) return 0;
2303 # endif
2304 return e;
2305 }
2306 #endif
2307 return 0;
2308 }
2309
2310 static VALUE
2311 open_load_file(VALUE fname_v, int *xflag)
2312 {
2313 const char *fname = (fname_v = rb_str_encode_ospath(fname_v),
2314 StringValueCStr(fname_v));
2315 long flen = RSTRING_LEN(fname_v);
2316 VALUE f;
2317 int e;
2318
2319 if (flen == 1 && fname[0] == '-') {
2320 f = rb_stdin;
2321 }
2322 else {
2323 int fd;
2324 /* open(2) may block if fname is point to FIFO and it's empty. Let's
2325 use O_NONBLOCK. */
2326 const int MODE_TO_LOAD = O_RDONLY | (
2327 #if defined O_NONBLOCK && HAVE_FCNTL
2328 /* TODO: fix conflicting O_NONBLOCK in ruby/win32.h */
2329 !(O_NONBLOCK & O_ACCMODE) ? O_NONBLOCK :
2330 #endif
2331 #if defined O_NDELAY && HAVE_FCNTL
2332 !(O_NDELAY & O_ACCMODE) ? O_NDELAY :
2333 #endif
2334 0);
2335 int mode = MODE_TO_LOAD;
2336 #if defined DOSISH || defined __CYGWIN__
2337 # define isdirsep(x) ((x) == '/' || (x) == '\\')
2338 {
2339 static const char exeext[] = ".exe";
2340 enum {extlen = sizeof(exeext)-1};
2341 if (flen > extlen && !isdirsep(fname[flen-extlen-1]) &&
2342 STRNCASECMP(fname+flen-extlen, exeext, extlen) == 0) {
2343 mode |= O_BINARY;
2344 *xflag = 1;
2345 }
2346 }
2347 #endif
2348
2349 if ((fd = rb_cloexec_open(fname, mode, 0)) < 0) {
2350 e = errno;
2351 if (!rb_gc_for_fd(e)) {
2352 rb_load_fail(fname_v, strerror(e));
2353 }
2354 if ((fd = rb_cloexec_open(fname, mode, 0)) < 0) {
2355 rb_load_fail(fname_v, strerror(errno));
2356 }
2357 }
2358 rb_update_max_fd(fd);
2359
2360 if (MODE_TO_LOAD != O_RDONLY && (e = disable_nonblock(fd)) != 0) {
2361 (void)close(fd);
2362 rb_load_fail(fname_v, strerror(e));
2363 }
2364
2365 e = ruby_is_fd_loadable(fd);
2366 if (!e) {
2367 e = errno;
2368 (void)close(fd);
2369 rb_load_fail(fname_v, strerror(e));
2370 }
2371
2372 f = rb_io_fdopen(fd, mode, fname);
2373 if (e < 0) {
2374 /*
2375 We need to wait if FIFO is empty. It's FIFO's semantics.
2376 rb_thread_wait_fd() release GVL. So, it's safe.
2377 */
2378 rb_io_wait(f, RB_INT2NUM(RUBY_IO_READABLE), Qnil);
2379 }
2380 }
2381 return f;
2382 }
2383
2384 static VALUE
2385 restore_load_file(VALUE arg)
2386 {
2387 struct load_file_arg *argp = (struct load_file_arg *)arg;
2388 VALUE f = argp->f;
2389
2390 if (!NIL_P(f) && f != rb_stdin) {
2391 rb_io_close(f);
2392 }
2393 return Qnil;
2394 }
2395
2396 static rb_ast_t *
2397 load_file(VALUE parser, VALUE fname, VALUE f, int script, ruby_cmdline_options_t *opt)
2398 {
2399 struct load_file_arg arg;
2400 arg.parser = parser;
2401 arg.fname = fname;
2402 arg.script = script;
2403 arg.opt = opt;
2404 arg.f = f;
2405 return (rb_ast_t *)rb_ensure(load_file_internal, (VALUE)&arg,
2406 restore_load_file, (VALUE)&arg);
2407 }
2408
2409 void *
2410 rb_load_file(const char *fname)
2411 {
2412 VALUE fname_v = rb_str_new_cstr(fname);
2413 return rb_load_file_str(fname_v);
2414 }
2415
2416 void *
2417 rb_load_file_str(VALUE fname_v)
2418 {
2419 return rb_parser_load_file(rb_parser_new(), fname_v);
2420 }
2421
2422 void *
2423 rb_parser_load_file(VALUE parser, VALUE fname_v)
2424 {
2425 ruby_cmdline_options_t opt;
2426 VALUE f = open_load_file(fname_v, &cmdline_options_init(&opt)->xflag);
2427 return load_file(parser, fname_v, f, 0, &opt);
2428 }
2429
2430 /*
2431 * call-seq:
2432 * Process.argv0 -> frozen_string
2433 *
2434 * Returns the name of the script being executed. The value is not
2435 * affected by assigning a new value to $0.
2436 *
2437 * This method first appeared in Ruby 2.1 to serve as a global
2438 * variable free means to get the script name.
2439 */
2440
2441 static VALUE
2442 proc_argv0(VALUE process)
2443 {
2444 return rb_orig_progname;
2445 }
2446
2447 static VALUE ruby_setproctitle(VALUE title);
2448
2449 /*
2450 * call-seq:
2451 * Process.setproctitle(string) -> string
2452 *
2453 * Sets the process title that appears on the ps(1) command. Not
2454 * necessarily effective on all platforms. No exception will be
2455 * raised regardless of the result, nor will NotImplementedError be
2456 * raised even if the platform does not support the feature.
2457 *
2458 * Calling this method does not affect the value of $0.
2459 *
2460 * Process.setproctitle('myapp: worker #%d' % worker_id)
2461 *
2462 * This method first appeared in Ruby 2.1 to serve as a global
2463 * variable free means to change the process title.
2464 */
2465
2466 static VALUE
2467 proc_setproctitle(VALUE process, VALUE title)
2468 {
2469 return ruby_setproctitle(title);
2470 }
2471
2472 static VALUE
2473 ruby_setproctitle(VALUE title)
2474 {
2475 const char *ptr = StringValueCStr(title);
2476 setproctitle("%.*s", RSTRING_LENINT(title), ptr);
2477 return title;
2478 }
2479
2480 static void
2481 set_arg0(VALUE val, ID id, VALUE *_)
2482 {
2483 if (origarg.argv == 0)
2484 rb_raise(rb_eRuntimeError, "$0 not initialized");
2485
2486 rb_progname = rb_str_new_frozen(ruby_setproctitle(val));
2487 }
2488
2489 static inline VALUE
2490 external_str_new_cstr(const char *p)
2491 {
2492 #if UTF8_PATH
2493 VALUE str = rb_utf8_str_new_cstr(p);
2494 str = str_conv_enc(str, NULL, rb_default_external_encoding());
2495 return str;
2496 #else
2497 return rb_external_str_new_cstr(p);
2498 #endif
2499 }
2500
2501 void
2502 ruby_script(const char *name)
2503 {
2504 if (name) {
2505 rb_orig_progname = rb_progname = external_str_new_cstr(name);
2506 rb_vm_set_progname(rb_progname);
2507 }
2508 }
2509
2510 /*! Sets the current script name to this value.
2511 *
2512 * Same as ruby_script() but accepts a VALUE.
2513 */
2514 void
2515 ruby_set_script_name(VALUE name)
2516 {
2517 rb_orig_progname = rb_progname = rb_str_dup(name);
2518 rb_vm_set_progname(rb_progname);
2519 }
2520
2521 static void
2522 init_ids(ruby_cmdline_options_t *opt)
2523 {
2524 rb_uid_t uid = getuid();
2525 rb_uid_t euid = geteuid();
2526 rb_gid_t gid = getgid();
2527 rb_gid_t egid = getegid();
2528
2529 if (uid != euid) opt->setids |= 1;
2530 if (egid != gid) opt->setids |= 2;
2531 }
2532
2533 #undef forbid_setid
2534 static void
2535 forbid_setid(const char *s, const ruby_cmdline_options_t *opt)
2536 {
2537 if (opt->setids & 1)
2538 rb_raise(rb_eSecurityError, "no %s allowed while running setuid", s);
2539 if (opt->setids & 2)
2540 rb_raise(rb_eSecurityError, "no %s allowed while running setgid", s);
2541 }
2542
2543 static VALUE
2544 verbose_getter(ID id, VALUE *ptr)
2545 {
2546 return *rb_ruby_verbose_ptr();
2547 }
2548
2549 static void
2550 verbose_setter(VALUE val, ID id, VALUE *variable)
2551 {
2552 *rb_ruby_verbose_ptr() = RTEST(val) ? Qtrue : val;
2553 }
2554
2555 static VALUE
2556 opt_W_getter(ID id, VALUE *dmy)
2557 {
2558 VALUE v = *rb_ruby_verbose_ptr();
2559
2560 switch (v) {
2561 case Qnil:
2562 return INT2FIX(0);
2563 case Qfalse:
2564 return INT2FIX(1);
2565 case Qtrue:
2566 return INT2FIX(2);
2567 default:
2568 return Qnil;
2569 }
2570 }
2571
2572 static VALUE
2573 debug_getter(ID id, VALUE *dmy)
2574 {
2575 return *rb_ruby_debug_ptr();
2576 }
2577
2578 static void
2579 debug_setter(VALUE val, ID id, VALUE *dmy)
2580 {
2581 *rb_ruby_debug_ptr() = val;
2582 }
2583
2584 void
2585 ruby_prog_init(void)
2586 {
2587 rb_define_virtual_variable("$VERBOSE", verbose_getter, verbose_setter);
2588 rb_define_virtual_variable("$-v", verbose_getter, verbose_setter);
2589 rb_define_virtual_variable("$-w", verbose_getter, verbose_setter);
2590 rb_define_virtual_variable("$-W", opt_W_getter, rb_gvar_readonly_setter);
2591 rb_define_virtual_variable("$DEBUG", debug_getter, debug_setter);
2592 rb_define_virtual_variable("$-d", debug_getter, debug_setter);
2593
2594 rb_gvar_ractor_local("$VERBOSE");
2595 rb_gvar_ractor_local("$-v");
2596 rb_gvar_ractor_local("$-w");
2597 rb_gvar_ractor_local("$-W");
2598 rb_gvar_ractor_local("$DEBUG");
2599 rb_gvar_ractor_local("$-d");
2600
2601 rb_define_hooked_variable("$0", &rb_progname, 0, set_arg0);
2602 rb_define_hooked_variable("$PROGRAM_NAME", &rb_progname, 0, set_arg0);
2603
2604 rb_define_module_function(rb_mProcess, "argv0", proc_argv0, 0);
2605 rb_define_module_function(rb_mProcess, "setproctitle", proc_setproctitle, 1);
2606
2607 /*
2608 * ARGV contains the command line arguments used to run ruby.
2609 *
2610 * A library like OptionParser can be used to process command-line
2611 * arguments.
2612 */
2613 rb_define_global_const("ARGV", rb_argv);
2614 }
2615
2616 void
2617 ruby_set_argv(int argc, char **argv)
2618 {
2619 int i;
2620 VALUE av = rb_argv;
2621
2622 rb_ary_clear(av);
2623 for (i = 0; i < argc; i++) {
2624 VALUE arg = external_str_new_cstr(argv[i]);
2625
2626 OBJ_FREEZE(arg);
2627 rb_ary_push(av, arg);
2628 }
2629 }
2630
2631 void *
2632 ruby_process_options(int argc, char **argv)
2633 {
2634 ruby_cmdline_options_t opt;
2635 VALUE iseq;
2636 const char *script_name = (argc > 0 && argv[0]) ? argv[0] : ruby_engine;
2637
2638 if (!origarg.argv || origarg.argc <= 0) {
2639 origarg.argc = argc;
2640 origarg.argv = argv;
2641 }
2642 ruby_script(script_name); /* for the time being */
2643 rb_argv0 = rb_str_new4(rb_progname);
2644 rb_gc_register_mark_object(rb_argv0);
2645 iseq = process_options(argc, argv, cmdline_options_init(&opt));
2646
2647 #ifndef HAVE_SETPROCTITLE
2648 ruby_init_setproctitle(argc, argv);
2649 #endif
2650
2651 return (void*)(struct RData*)iseq;
2652 }
2653
2654 static void
2655 fill_standard_fds(void)
2656 {
2657 int f0, f1, f2, fds[2];
2658 struct stat buf;
2659 f0 = fstat(0, &buf) == -1 && errno == EBADF;
2660 f1 = fstat(1, &buf) == -1 && errno == EBADF;
2661 f2 = fstat(2, &buf) == -1 && errno == EBADF;
2662 if (f0) {
2663 if (pipe(fds) == 0) {
2664 close(fds[1]);
2665 if (fds[0] != 0) {
2666 dup2(fds[0], 0);
2667 close(fds[0]);
2668 }
2669 }
2670 }
2671 if (f1 || f2) {
2672 if (pipe(fds) == 0) {
2673 close(fds[0]);
2674 if (f1 && fds[1] != 1)
2675 dup2(fds[1], 1);
2676 if (f2 && fds[1] != 2)
2677 dup2(fds[1], 2);
2678 if (fds[1] != 1 && fds[1] != 2)
2679 close(fds[1]);
2680 }
2681 }
2682 }
2683
2684 void
2685 ruby_sysinit(int *argc, char ***argv)
2686 {
2687 #if defined(_WIN32)
2688 rb_w32_sysinit(argc, argv);
2689 #endif
2690 if (*argc >= 0 && *argv) {
2691 origarg.argc = *argc;
2692 origarg.argv = *argv;
2693 }
2694 fill_standard_fds();
2695 }
Ruby programming language (80x24.org development)