forked from ruby/ruby
/
ruby.c
1550 lines (1378 loc) · 33.4 KB
/
ruby.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/**********************************************************************
ruby.c -
$Author$
created at: Tue Aug 10 12:47:31 JST 1993
Copyright (C) 1993-2007 Yukihiro Matsumoto
Copyright (C) 2000 Network Applied Communication Laboratory, Inc.
Copyright (C) 2000 Information-technology Promotion Agency, Japan
**********************************************************************/
#ifdef __CYGWIN__
#include <windows.h>
#include <sys/cygwin.h>
#endif
#ifdef _WIN32_WCE
#include <winsock.h>
#include "ruby/wince.h"
#endif
#include "ruby/ruby.h"
#include "ruby/node.h"
#include "ruby/encoding.h"
#include "eval_intern.h"
#include "dln.h"
#include <stdio.h>
#include <sys/types.h>
#include <ctype.h>
#ifdef __hpux
#include <sys/pstat.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#if defined(HAVE_FCNTL_H)
#include <fcntl.h>
#elif defined(HAVE_SYS_FCNTL_H)
#include <sys/fcntl.h>
#endif
#ifdef HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif
#ifndef MAXPATHLEN
# define MAXPATHLEN 1024
#endif
#if defined(__MACOS__) && defined(__MWERKS__)
#include <console.h>
#endif
#include "ruby/util.h"
#ifndef HAVE_STDLIB_H
char *getenv();
#endif
/* TODO: move to VM */
VALUE ruby_debug = Qfalse;
VALUE ruby_verbose = Qfalse;
VALUE rb_parser_get_yydebug(VALUE);
VALUE rb_parser_set_yydebug(VALUE, VALUE);
const char *ruby_get_inplace_mode(void);
void ruby_set_inplace_mode(const char *);
extern VALUE rb_get_argv(void);
#define rb_argv rb_get_argv()
#define DISABLE_BIT(bit) (1U << disable_##bit)
enum disable_flag_bits {
disable_gems,
disable_rubyopt,
};
struct cmdline_options {
int sflag, xflag;
int do_loop, do_print;
int do_check, do_line;
int do_split, do_search;
int usage;
int version;
int copyright;
unsigned int disable;
int verbose;
int yydebug;
char *script;
VALUE e_script;
struct {
struct {
VALUE name;
int index;
} enc;
} src, ext;
};
struct cmdline_arguments {
int argc;
char **argv;
struct cmdline_options *opt;
};
static NODE *load_file(VALUE, const char *, int, struct cmdline_options *);
static void forbid_setid(const char *);
static struct {
int argc;
char **argv;
#if !defined(PSTAT_SETCMD) && !defined(HAVE_SETPROCTITLE)
int len;
#endif
} origarg;
static void
usage(const char *name)
{
/* This message really ought to be max 23 lines.
* Removed -h because the user already knows that option. Others? */
static const char *const usage_msg[] = {
"-0[octal] specify record separator (\\0, if no argument)",
"-a autosplit mode with -n or -p (splits $_ into $F)",
"-c check syntax only",
"-Cdirectory cd to directory, before executing your script",
"-d set debugging flags (set $DEBUG to true)",
"-e 'command' one line of script. Several -e's allowed. Omit [programfile]",
"-Eencoding specifies the character encoding for the program codes",
"-Fpattern split() pattern for autosplit (-a)",
"-i[extension] edit ARGV files in place (make backup if extension supplied)",
"-Idirectory specify $LOAD_PATH directory (may be used more than once)",
"-Kkcode specifies KANJI (Japanese) code-set",
"-l enable line ending processing",
"-n assume 'while gets(); ... end' loop around your script",
"-p assume loop like -n but print line also like sed",
"-rlibrary require the library, before executing your script",
"-s enable some switch parsing for switches after script name",
"-S look for the script using PATH environment variable",
"-T[level] turn on tainting checks",
"-v print version number, then turn on verbose mode",
"-w turn warnings on for your script",
"-W[level] set warning level; 0=silence, 1=medium, 2=verbose (default)",
"-x[directory] strip off text before #!ruby line and perhaps cd to directory",
"--enable/--disable-FEATURE --enable/--disable=FEATURE enable/disable FEATUREs",
" gems: gem libraries, rubyopt: RUBYOPT env, or all",
"--copyright print the copyright",
"--version print the version",
NULL
};
const char *const *p = usage_msg;
printf("Usage: %s [switches] [--] [programfile] [arguments]\n", name);
while (*p)
printf(" %s\n", *p++);
}
extern VALUE rb_load_path;
#ifndef CharNext /* defined as CharNext[AW] on Windows. */
#define CharNext(p) ((p) + mblen(p, RUBY_MBCHAR_MAXSIZE))
#endif
#if defined DOSISH || defined __CYGWIN__
static inline void
translate_char(char *p, int from, int to)
{
while (*p) {
if ((unsigned char)*p == from)
*p = to;
p = CharNext(p);
}
}
#endif
#if defined _WIN32 || defined __CYGWIN__ || defined __DJGPP__
static VALUE
rubylib_mangled_path(const char *s, unsigned int l)
{
static char *newp, *oldp;
static int newl, oldl, notfound;
char *ptr;
VALUE ret;
if (!newp && !notfound) {
newp = getenv("RUBYLIB_PREFIX");
if (newp) {
oldp = newp = strdup(newp);
while (*newp && !ISSPACE(*newp) && *newp != ';') {
newp = CharNext(newp); /* Skip digits. */
}
oldl = newp - oldp;
while (*newp && (ISSPACE(*newp) || *newp == ';')) {
newp = CharNext(newp); /* Skip whitespace. */
}
newl = strlen(newp);
if (newl == 0 || oldl == 0) {
rb_fatal("malformed RUBYLIB_PREFIX");
}
translate_char(newp, '\\', '/');
}
else {
notfound = 1;
}
}
if (!newp || l < oldl || STRNCASECMP(oldp, s, oldl) != 0) {
return rb_str_new(s, l);
}
ret = rb_str_new(0, l + newl - oldl);
ptr = RSTRING_PTR(ret);
memcpy(ptr, newp, newl);
memcpy(ptr + newl, s + oldl, l - oldl);
ptr[l + newl - oldl] = 0;
return ret;
}
static VALUE
rubylib_mangled_path2(const char *s)
{
return rubylib_mangled_path(s, strlen(s));
}
#else
#define rubylib_mangled_path rb_str_new
#define rubylib_mangled_path2 rb_str_new2
#endif
static void
push_include(const char *path, VALUE (*filter)(VALUE))
{
const char sep = PATH_SEP_CHAR;
const char *p, *s;
p = path;
while (*p) {
while (*p == sep)
p++;
if (!*p) break;
for (s = p; *s && *s != sep; s = CharNext(s));
rb_ary_push(rb_load_path, (*filter)(rubylib_mangled_path(p, s - p)));
p = s;
}
}
#ifdef __CYGWIN__
static void
push_include_cygwin(const char *path, VALUE (*filter)(VALUE))
{
const char *p, *s;
char rubylib[FILENAME_MAX];
VALUE buf = 0;
p = path;
while (*p) {
unsigned int len;
while (*p == ';')
p++;
if (!*p) break;
for (s = p; *s && *s != ';'; s = CharNext(s));
len = s - p;
if (*s) {
if (!buf) {
buf = rb_str_new(p, len);
p = RSTRING_PTR(buf);
}
else {
rb_str_resize(buf, len);
p = strncpy(RSTRING_PTR(buf), p, len);
}
}
if (cygwin_conv_to_posix_path(p, rubylib) == 0)
p = rubylib;
push_include(p, filter);
if (!*s) break;
p = s + 1;
}
}
#define push_include push_include_cygwin
#endif
void
ruby_push_include(const char *path, VALUE (*filter)(VALUE))
{
if (path == 0)
return;
push_include(path, filter);
}
static VALUE
identical_path(VALUE path)
{
return path;
}
void
ruby_incpush(const char *path)
{
ruby_push_include(path, identical_path);
}
static VALUE
expand_include_path(VALUE path)
{
char *p = RSTRING_PTR(path);
if (!p)
return path;
if (*p == '.' && p[1] == '/')
return path;
return rb_file_expand_path(path, Qnil);
}
void
ruby_incpush_expand(const char *path)
{
ruby_push_include(path, expand_include_path);
}
#if defined DOSISH || defined __CYGWIN__
#define LOAD_RELATIVE 1
#endif
#if defined _WIN32 || defined __CYGWIN__
static HMODULE libruby;
BOOL WINAPI
DllMain(HINSTANCE dll, DWORD reason, LPVOID reserved)
{
if (reason == DLL_PROCESS_ATTACH)
libruby = dll;
return TRUE;
}
#endif
void
ruby_init_loadpath(void)
{
#if defined LOAD_RELATIVE
char libpath[MAXPATHLEN + 1];
char *p;
int rest;
#if defined _WIN32 || defined __CYGWIN__
GetModuleFileName(libruby, libpath, sizeof libpath);
#elif defined(DJGPP)
extern char *__dos_argv0;
strncpy(libpath, __dos_argv0, sizeof(libpath) - 1);
#elif defined(__human68k__)
extern char **_argv;
strncpy(libpath, _argv[0], sizeof(libpath) - 1);
#elif defined(__EMX__)
_execname(libpath, sizeof(libpath) - 1);
#endif
libpath[sizeof(libpath) - 1] = '\0';
#if defined DOSISH
translate_char(libpath, '\\', '/');
#elif defined __CYGWIN__
{
char rubylib[FILENAME_MAX];
cygwin_conv_to_posix_path(libpath, rubylib);
strncpy(libpath, rubylib, sizeof(libpath));
}
#endif
p = strrchr(libpath, '/');
if (p) {
*p = 0;
if (p - libpath > 3 && !STRCASECMP(p - 4, "/bin")) {
p -= 4;
*p = 0;
}
}
else {
strcpy(libpath, ".");
p = libpath + 1;
}
rest = sizeof(libpath) - 1 - (p - libpath);
#define RUBY_RELATIVE(path) (strncpy(p, (path), rest), libpath)
#else
#define RUBY_RELATIVE(path) (path)
#endif
#define incpush(path) rb_ary_push(rb_load_path, rubylib_mangled_path2(path))
if (rb_safe_level() == 0) {
ruby_incpush(getenv("RUBYLIB"));
}
#ifdef RUBY_SEARCH_PATH
incpush(RUBY_RELATIVE(RUBY_SEARCH_PATH));
#endif
incpush(RUBY_RELATIVE(RUBY_SITE_LIB2));
#ifdef RUBY_SITE_THIN_ARCHLIB
incpush(RUBY_RELATIVE(RUBY_SITE_THIN_ARCHLIB));
#endif
incpush(RUBY_RELATIVE(RUBY_SITE_ARCHLIB));
incpush(RUBY_RELATIVE(RUBY_SITE_LIB));
incpush(RUBY_RELATIVE(RUBY_VENDOR_LIB2));
#ifdef RUBY_VENDOR_THIN_ARCHLIB
incpush(RUBY_RELATIVE(RUBY_VENDOR_THIN_ARCHLIB));
#endif
incpush(RUBY_RELATIVE(RUBY_VENDOR_ARCHLIB));
incpush(RUBY_RELATIVE(RUBY_VENDOR_LIB));
incpush(RUBY_RELATIVE(RUBY_LIB));
#ifdef RUBY_THIN_ARCHLIB
incpush(RUBY_RELATIVE(RUBY_THIN_ARCHLIB));
#endif
incpush(RUBY_RELATIVE(RUBY_ARCHLIB));
if (rb_safe_level() == 0) {
incpush(".");
}
}
struct req_list {
char *name;
struct req_list *next;
};
static struct {
struct req_list *last, head;
} req_list = {&req_list.head,};
static void
add_modules(const char *mod)
{
struct req_list *list;
list = ALLOC(struct req_list);
list->name = ALLOC_N(char, strlen(mod) + 1);
strcpy(list->name, mod);
list->next = 0;
req_list.last->next = list;
req_list.last = list;
}
extern void Init_ext(void);
extern VALUE rb_vm_top_self(void);
static void
require_libraries(void)
{
struct req_list *list = req_list.head.next;
struct req_list *tmp;
ID require = rb_intern("require");
Init_ext(); /* should be called here for some reason :-( */
req_list.last = 0;
while (list) {
VALUE feature = rb_str_new2(list->name);
tmp = list->next;
free(list->name);
free(list);
list = tmp;
rb_funcall2(rb_vm_top_self(), require, 1, &feature);
}
req_list.head.next = 0;
}
static void
process_sflag(struct cmdline_options *opt)
{
if (opt->sflag) {
long n;
VALUE *args;
VALUE argv = rb_argv;
n = RARRAY_LEN(argv);
args = RARRAY_PTR(argv);
while (n > 0) {
VALUE v = *args++;
char *s = StringValuePtr(v);
char *p;
int hyphen = Qfalse;
if (s[0] != '-')
break;
n--;
if (s[1] == '-' && s[2] == '\0')
break;
v = Qtrue;
/* check if valid name before replacing - with _ */
for (p = s + 1; *p; p++) {
if (*p == '=') {
*p++ = '\0';
v = rb_str_new2(p);
break;
}
if (*p == '-') {
hyphen = Qtrue;
}
else if (*p != '_' && !ISALNUM(*p)) {
VALUE name_error[2];
name_error[0] =
rb_str_new2("invalid name for global variable - ");
if (!(p = strchr(p, '='))) {
rb_str_cat2(name_error[0], s);
}
else {
rb_str_cat(name_error[0], s, p - s);
}
name_error[1] = args[-1];
rb_exc_raise(rb_class_new_instance(2, name_error, rb_eNameError));
}
}
s[0] = '$';
if (hyphen) {
for (p = s + 1; *p; ++p) {
if (*p == '-')
*p = '_';
}
}
rb_gv_set(s, v);
}
n = RARRAY_LEN(argv) - n;
while (n--) {
rb_ary_shift(argv);
}
}
opt->sflag = 0;
}
NODE *rb_parser_append_print(VALUE, NODE *);
NODE *rb_parser_while_loop(VALUE, NODE *, int, int);
static int proc_options(int argc, char **argv, struct cmdline_options *opt);
static char *
moreswitches(const char *s, struct cmdline_options *opt)
{
int argc;
char *argv[3];
const char *p = s;
argc = 2;
argv[0] = argv[2] = 0;
while (*s && !ISSPACE(*s))
s++;
argv[1] = ALLOCA_N(char, s - p + 2);
argv[1][0] = '-';
strncpy(argv[1] + 1, p, s - p);
argv[1][s - p + 1] = '\0';
proc_options(argc, argv, opt);
while (*s && ISSPACE(*s))
s++;
return (char *)s;
}
#define NAME_MATCH_P(name, str, len) \
((len) < sizeof(name) && strncmp((str), name, (len)) == 0)
#define UNSET_WHEN(name, bit, str, len) \
if (NAME_MATCH_P(name, str, len)) { \
*(unsigned int *)arg &= ~(bit); \
return; \
}
#define SET_WHEN(name, bit, str, len) \
if (NAME_MATCH_P(name, str, len)) { \
*(unsigned int *)arg |= (bit); \
return; \
}
static void
enable_option(const char *str, int len, void *arg)
{
#define UNSET_WHEN_DISABLE(bit) UNSET_WHEN(#bit, DISABLE_BIT(bit), str, len)
UNSET_WHEN_DISABLE(gems);
UNSET_WHEN_DISABLE(rubyopt);
if (NAME_MATCH_P("all", str, len)) {
*(unsigned int *)arg = 0U;
return;
}
rb_warn("unknown argument for --enable: `%.*s'", len, str);
}
static void
disable_option(const char *str, int len, void *arg)
{
#define SET_WHEN_DISABLE(bit) SET_WHEN(#bit, DISABLE_BIT(bit), str, len)
SET_WHEN_DISABLE(gems);
SET_WHEN_DISABLE(rubyopt);
if (NAME_MATCH_P("all", str, len)) {
*(unsigned int *)arg = ~0U;
return;
}
rb_warn("unknown argument for --disable: `%.*s'", len, str);
}
static int
proc_options(int argc, char **argv, struct cmdline_options *opt)
{
int n, argc0 = argc;
const char *s;
if (argc == 0)
return 0;
for (argc--, argv++; argc > 0; argc--, argv++) {
if (argv[0][0] != '-' || !argv[0][1])
break;
s = argv[0] + 1;
reswitch:
switch (*s) {
case 'a':
opt->do_split = Qtrue;
s++;
goto reswitch;
case 'p':
opt->do_print = Qtrue;
/* through */
case 'n':
opt->do_loop = Qtrue;
s++;
goto reswitch;
case 'd':
ruby_debug = Qtrue;
ruby_verbose = Qtrue;
s++;
goto reswitch;
case 'y':
opt->yydebug = 1;
s++;
goto reswitch;
case 'v':
if (opt->verbose) {
s++;
goto reswitch;
}
ruby_show_version();
opt->verbose = 1;
case 'w':
ruby_verbose = Qtrue;
s++;
goto reswitch;
case 'W':
{
int numlen;
int v = 2; /* -W as -W2 */
if (*++s) {
v = scan_oct(s, 1, &numlen);
if (numlen == 0)
v = 1;
s += numlen;
}
switch (v) {
case 0:
ruby_verbose = Qnil;
break;
case 1:
ruby_verbose = Qfalse;
break;
default:
ruby_verbose = Qtrue;
break;
}
}
goto reswitch;
case 'c':
opt->do_check = Qtrue;
s++;
goto reswitch;
case 's':
forbid_setid("-s");
opt->sflag = 1;
s++;
goto reswitch;
case 'h':
usage(origarg.argv[0]);
rb_exit(EXIT_SUCCESS);
break;
case 'l':
opt->do_line = Qtrue;
rb_output_rs = rb_rs;
s++;
goto reswitch;
case 'S':
forbid_setid("-S");
opt->do_search = Qtrue;
s++;
goto reswitch;
case 'e':
forbid_setid("-e");
if (!*++s) {
s = argv[1];
argc--, argv++;
}
if (!s) {
rb_raise(rb_eRuntimeError, "no code specified for -e");
}
if (!opt->e_script) {
opt->e_script = rb_str_new(0, 0);
if (opt->script == 0)
opt->script = "-e";
}
rb_str_cat2(opt->e_script, s);
rb_str_cat2(opt->e_script, "\n");
break;
case 'r':
forbid_setid("-r");
if (*++s) {
add_modules(s);
}
else if (argv[1]) {
add_modules(argv[1]);
argc--, argv++;
}
break;
case 'i':
forbid_setid("-i");
ruby_set_inplace_mode(s + 1);
break;
case 'x':
opt->xflag = Qtrue;
s++;
if (*s && chdir(s) < 0) {
rb_fatal("Can't chdir to %s", s);
}
break;
case 'C':
case 'X':
s++;
if (!*s) {
s = argv[1];
argc--, argv++;
}
if (!s || !*s) {
rb_fatal("Can't chdir");
}
if (chdir(s) < 0) {
rb_fatal("Can't chdir to %s", s);
}
break;
case 'F':
if (*++s) {
rb_fs = rb_reg_new(s, strlen(s), 0);
}
break;
case 'E':
if (!*++s) goto next_encoding;
goto encoding;
case 'K':
if (*++s) {
const char *enc_name = 0;
switch (*s) {
case 'E': case 'e':
enc_name = "EUC-JP";
break;
case 'S': case 's':
enc_name = "Windows-31J";
break;
case 'U': case 'u':
enc_name = "UTF-8";
break;
case 'N': case 'n': case 'A': case 'a':
enc_name = "ASCII-8BIT";
break;
}
if (enc_name) {
opt->src.enc.name = rb_str_new2(enc_name);
opt->ext.enc.name = opt->src.enc.name;
}
s++;
}
goto reswitch;
case 'T':
{
int numlen;
int v = 1;
if (*++s) {
v = scan_oct(s, 2, &numlen);
if (numlen == 0)
v = 1;
s += numlen;
}
rb_set_safe_level(v);
}
goto reswitch;
case 'I':
forbid_setid("-I");
if (*++s)
ruby_incpush_expand(s);
else if (argv[1]) {
ruby_incpush_expand(argv[1]);
argc--, argv++;
}
break;
case '0':
{
int numlen;
int v;
char c;
v = scan_oct(s, 4, &numlen);
s += numlen;
if (v > 0377)
rb_rs = Qnil;
else if (v == 0 && numlen >= 2) {
rb_rs = rb_str_new2("\n\n");
}
else {
c = v & 0xff;
rb_rs = rb_str_new(&c, 1);
}
}
goto reswitch;
case '-':
if (!s[1] || (s[1] == '\r' && !s[2])) {
argc--, argv++;
goto switch_end;
}
s++;
if (strcmp("copyright", s) == 0)
opt->copyright = 1;
else if (strcmp("debug", s) == 0) {
ruby_debug = Qtrue;
ruby_verbose = Qtrue;
}
else if (strncmp("enable", s, n = 6) == 0 &&
(!s[n] || s[n] == '-' || s[n] == '=')) {
if (!(s += n + 1)[-1] && (!--argc || !(s = *++argv))) {
rb_raise(rb_eRuntimeError, "missing argument for --enable");
}
ruby_each_words(s, enable_option, &opt->disable);
}
else if (strncmp("disable", s, n = 7) == 0 &&
(!s[n] || s[n] == '-' || s[n] == '=')) {
if (!(s += n + 1)[-1] && (!--argc || !(s = *++argv))) {
rb_raise(rb_eRuntimeError, "missing argument for --disable");
}
ruby_each_words(s, disable_option, &opt->disable);
}
else if (strncmp("encoding", s, n = 8) == 0 && (!s[n] || s[n] == '=')) {
s += n;
if (!*s++) {
next_encoding:
if (!--argc || !(s = *++argv)) {
rb_raise(rb_eRuntimeError, "missing argument for --encoding");
}
}
encoding:
opt->ext.enc.name = rb_str_new2(s);
}
else if (strcmp("version", s) == 0)
opt->version = 1;
else if (strcmp("verbose", s) == 0) {
opt->verbose = 1;
ruby_verbose = Qtrue;
}
else if (strcmp("yydebug", s) == 0)
opt->yydebug = 1;
else if (strcmp("help", s) == 0) {
usage(origarg.argv[0]);
rb_exit(EXIT_SUCCESS);
}
else {
rb_raise(rb_eRuntimeError,
"invalid option --%s (-h will show valid options)", s);
}
break;
case '\r':
if (!s[1])
break;
default:
{
if (ISPRINT(*s)) {
rb_raise(rb_eRuntimeError,
"invalid option -%c (-h will show valid options)",
(int)(unsigned char)*s);
}
else {
rb_raise(rb_eRuntimeError,
"invalid option -\\x%02X (-h will show valid options)",
(int)(unsigned char)*s);
}
}
goto switch_end;
case 0:
break;
}
}
switch_end:
return argc0 - argc;
}
void Init_prelude(void);
static void
ruby_init_gems(int enable)
{
VALUE gem;
gem = rb_define_module("Gem");
rb_const_set(gem, rb_intern("Enable"), enable ? Qtrue : Qfalse);
Init_prelude();
}
static int
opt_enc_index(VALUE enc_name)
{
const char *s = RSTRING_PTR(enc_name);
int i = rb_enc_find_index(s);
if (i < 0) {
rb_raise(rb_eRuntimeError, "unknown encoding name - %s", s);
}
else if (rb_enc_dummy_p(rb_enc_from_index(i))) {
rb_raise(rb_eRuntimeError, "dummy encoding is not acceptable - %s ", s);
}
return i;
}
static int src_encoding_index = -1; /* TODO: VM private */
static VALUE
process_options(VALUE arg)
{
struct cmdline_arguments *argp = (struct cmdline_arguments *)arg;
struct cmdline_options *opt = argp->opt;
int argc = argp->argc;
char **argv = argp->argv;
NODE *tree = 0;
VALUE parser;
rb_encoding *enc;
const char *s;
int i = proc_options(argc, argv, opt);
argc -= i;
argv += i;
if (!(opt->disable & DISABLE_BIT(rubyopt)) &&
rb_safe_level() == 0 && (s = getenv("RUBYOPT"))) {
VALUE src_enc_name = opt->src.enc.name;
VALUE ext_enc_name = opt->ext.enc.name;
while (ISSPACE(*s))
s++;
if (*s == 'T' || (*s == '-' && *(s + 1) == 'T')) {
int numlen;
int v = 1;
if (*s != 'T')
++s;
if (*++s) {
v = scan_oct(s, 2, &numlen);
if (numlen == 0)
v = 1;
}
rb_set_safe_level(v);
}
else {
while (s && *s) {
if (*s == '-') {
s++;
if (ISSPACE(*s)) {
do {
s++;
} while (ISSPACE(*s));
continue;
}
}
if (!*s)
break;
if (!strchr("EIdvwWrK", *s))
rb_raise(rb_eRuntimeError,
"invalid switch in RUBYOPT: -%c", *s);
s = moreswitches(s, opt);
}
}
if (src_enc_name)