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7ee2227d SP |
1 | /* mathoms.c |
2 | * | |
3 | * Copyright (C) 2005, by Larry Wall and others | |
4 | * | |
5 | * You may distribute under the terms of either the GNU General Public | |
6 | * License or the Artistic License, as specified in the README file. | |
7 | * | |
8 | */ | |
9 | ||
10 | /* | |
11 | * "Anything that Hobbits had no immediate use for, but were unwilling to | |
12 | * throw away, they called a mathom. Their dwellings were apt to become | |
13 | * rather crowded with mathoms, and many of the presents that passed from | |
14 | * hand to hand were of that sort." | |
15 | */ | |
16 | ||
17 | /* | |
18 | * This file contains mathoms, various binary artifacts from previous | |
f2f0f092 NC |
19 | * versions of Perl. For binary or source compatibility reasons, though, |
20 | * we cannot completely remove them from the core code. | |
7ee2227d SP |
21 | * |
22 | * SMP - Oct. 24, 2005 | |
23 | * | |
24 | */ | |
25 | ||
26 | #include "EXTERN.h" | |
27 | #define PERL_IN_MATHOMS_C | |
28 | #include "perl.h" | |
29 | ||
30 | /* ref() is now a macro using Perl_doref; | |
31 | * this version provided for binary compatibility only. | |
32 | */ | |
33 | OP * | |
34 | Perl_ref(pTHX_ OP *o, I32 type) | |
35 | { | |
36 | return doref(o, type, TRUE); | |
37 | } | |
38 | ||
aae9cea0 | 39 | /* |
174c73e3 NC |
40 | =for apidoc sv_unref |
41 | ||
42 | Unsets the RV status of the SV, and decrements the reference count of | |
43 | whatever was being referenced by the RV. This can almost be thought of | |
44 | as a reversal of C<newSVrv>. This is C<sv_unref_flags> with the C<flag> | |
45 | being zero. See C<SvROK_off>. | |
46 | ||
47 | =cut | |
48 | */ | |
49 | ||
50 | void | |
51 | Perl_sv_unref(pTHX_ SV *sv) | |
52 | { | |
53 | sv_unref_flags(sv, 0); | |
54 | } | |
55 | ||
56 | /* | |
aae9cea0 NC |
57 | =for apidoc sv_taint |
58 | ||
59 | Taint an SV. Use C<SvTAINTED_on> instead. | |
60 | =cut | |
61 | */ | |
62 | ||
63 | void | |
64 | Perl_sv_taint(pTHX_ SV *sv) | |
65 | { | |
66 | sv_magic((sv), Nullsv, PERL_MAGIC_taint, Nullch, 0); | |
67 | } | |
68 | ||
7ee2227d SP |
69 | /* sv_2iv() is now a macro using Perl_sv_2iv_flags(); |
70 | * this function provided for binary compatibility only | |
71 | */ | |
72 | ||
73 | IV | |
74 | Perl_sv_2iv(pTHX_ register SV *sv) | |
75 | { | |
76 | return sv_2iv_flags(sv, SV_GMAGIC); | |
77 | } | |
78 | ||
79 | /* sv_2uv() is now a macro using Perl_sv_2uv_flags(); | |
80 | * this function provided for binary compatibility only | |
81 | */ | |
82 | ||
83 | UV | |
84 | Perl_sv_2uv(pTHX_ register SV *sv) | |
85 | { | |
86 | return sv_2uv_flags(sv, SV_GMAGIC); | |
87 | } | |
88 | ||
89 | /* sv_2pv() is now a macro using Perl_sv_2pv_flags(); | |
90 | * this function provided for binary compatibility only | |
91 | */ | |
92 | ||
93 | char * | |
94 | Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp) | |
95 | { | |
96 | return sv_2pv_flags(sv, lp, SV_GMAGIC); | |
97 | } | |
98 | ||
5abc721d | 99 | /* |
cb2f1b7b NC |
100 | =for apidoc sv_2pv_nolen |
101 | ||
102 | Like C<sv_2pv()>, but doesn't return the length too. You should usually | |
103 | use the macro wrapper C<SvPV_nolen(sv)> instead. | |
104 | =cut | |
105 | */ | |
106 | ||
107 | char * | |
108 | Perl_sv_2pv_nolen(pTHX_ register SV *sv) | |
109 | { | |
110 | return sv_2pv(sv, 0); | |
111 | } | |
112 | ||
113 | /* | |
114 | =for apidoc sv_2pvbyte_nolen | |
115 | ||
116 | Return a pointer to the byte-encoded representation of the SV. | |
117 | May cause the SV to be downgraded from UTF-8 as a side-effect. | |
118 | ||
119 | Usually accessed via the C<SvPVbyte_nolen> macro. | |
120 | ||
121 | =cut | |
122 | */ | |
123 | ||
124 | char * | |
125 | Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv) | |
126 | { | |
127 | return sv_2pvbyte(sv, 0); | |
128 | } | |
129 | ||
130 | /* | |
131 | =for apidoc sv_2pvutf8_nolen | |
132 | ||
133 | Return a pointer to the UTF-8-encoded representation of the SV. | |
134 | May cause the SV to be upgraded to UTF-8 as a side-effect. | |
135 | ||
136 | Usually accessed via the C<SvPVutf8_nolen> macro. | |
137 | ||
138 | =cut | |
139 | */ | |
140 | ||
141 | char * | |
142 | Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv) | |
143 | { | |
144 | return sv_2pvutf8(sv, 0); | |
145 | } | |
146 | ||
147 | /* | |
5abc721d NC |
148 | =for apidoc sv_force_normal |
149 | ||
150 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
151 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
152 | an xpvmg. See also C<sv_force_normal_flags>. | |
153 | ||
154 | =cut | |
155 | */ | |
156 | ||
157 | void | |
158 | Perl_sv_force_normal(pTHX_ register SV *sv) | |
159 | { | |
160 | sv_force_normal_flags(sv, 0); | |
161 | } | |
7ee2227d SP |
162 | |
163 | /* sv_setsv() is now a macro using Perl_sv_setsv_flags(); | |
164 | * this function provided for binary compatibility only | |
165 | */ | |
166 | ||
167 | void | |
168 | Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr) | |
169 | { | |
170 | sv_setsv_flags(dstr, sstr, SV_GMAGIC); | |
171 | } | |
172 | ||
173 | /* sv_catpvn() is now a macro using Perl_sv_catpvn_flags(); | |
174 | * this function provided for binary compatibility only | |
175 | */ | |
176 | ||
177 | void | |
178 | Perl_sv_catpvn(pTHX_ SV *dsv, const char* sstr, STRLEN slen) | |
179 | { | |
180 | sv_catpvn_flags(dsv, sstr, slen, SV_GMAGIC); | |
181 | } | |
182 | ||
183 | /* sv_catsv() is now a macro using Perl_sv_catsv_flags(); | |
184 | * this function provided for binary compatibility only | |
185 | */ | |
186 | ||
187 | void | |
188 | Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr) | |
189 | { | |
190 | sv_catsv_flags(dstr, sstr, SV_GMAGIC); | |
191 | } | |
192 | ||
0feed65a NC |
193 | /* |
194 | =for apidoc sv_iv | |
195 | ||
196 | A private implementation of the C<SvIVx> macro for compilers which can't | |
197 | cope with complex macro expressions. Always use the macro instead. | |
198 | ||
199 | =cut | |
200 | */ | |
201 | ||
202 | IV | |
203 | Perl_sv_iv(pTHX_ register SV *sv) | |
204 | { | |
205 | if (SvIOK(sv)) { | |
206 | if (SvIsUV(sv)) | |
207 | return (IV)SvUVX(sv); | |
208 | return SvIVX(sv); | |
209 | } | |
210 | return sv_2iv(sv); | |
211 | } | |
212 | ||
213 | /* | |
214 | =for apidoc sv_uv | |
215 | ||
216 | A private implementation of the C<SvUVx> macro for compilers which can't | |
217 | cope with complex macro expressions. Always use the macro instead. | |
218 | ||
219 | =cut | |
220 | */ | |
221 | ||
222 | UV | |
223 | Perl_sv_uv(pTHX_ register SV *sv) | |
224 | { | |
225 | if (SvIOK(sv)) { | |
226 | if (SvIsUV(sv)) | |
227 | return SvUVX(sv); | |
228 | return (UV)SvIVX(sv); | |
229 | } | |
230 | return sv_2uv(sv); | |
231 | } | |
232 | ||
233 | /* | |
234 | =for apidoc sv_nv | |
235 | ||
236 | A private implementation of the C<SvNVx> macro for compilers which can't | |
237 | cope with complex macro expressions. Always use the macro instead. | |
238 | ||
239 | =cut | |
240 | */ | |
241 | ||
242 | NV | |
243 | Perl_sv_nv(pTHX_ register SV *sv) | |
244 | { | |
245 | if (SvNOK(sv)) | |
246 | return SvNVX(sv); | |
247 | return sv_2nv(sv); | |
248 | } | |
249 | ||
250 | /* | |
251 | =for apidoc sv_pv | |
252 | ||
253 | Use the C<SvPV_nolen> macro instead | |
254 | ||
255 | =for apidoc sv_pvn | |
256 | ||
257 | A private implementation of the C<SvPV> macro for compilers which can't | |
258 | cope with complex macro expressions. Always use the macro instead. | |
259 | ||
260 | =cut | |
261 | */ | |
262 | ||
263 | char * | |
264 | Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp) | |
265 | { | |
266 | if (SvPOK(sv)) { | |
267 | *lp = SvCUR(sv); | |
268 | return SvPVX(sv); | |
269 | } | |
270 | return sv_2pv(sv, lp); | |
271 | } | |
272 | ||
273 | ||
274 | char * | |
275 | Perl_sv_pvn_nomg(pTHX_ register SV *sv, STRLEN *lp) | |
276 | { | |
277 | if (SvPOK(sv)) { | |
278 | *lp = SvCUR(sv); | |
279 | return SvPVX(sv); | |
280 | } | |
281 | return sv_2pv_flags(sv, lp, 0); | |
282 | } | |
283 | ||
7ee2227d SP |
284 | /* sv_pv() is now a macro using SvPV_nolen(); |
285 | * this function provided for binary compatibility only | |
286 | */ | |
287 | ||
288 | char * | |
289 | Perl_sv_pv(pTHX_ SV *sv) | |
290 | { | |
291 | if (SvPOK(sv)) | |
292 | return SvPVX(sv); | |
293 | ||
294 | return sv_2pv(sv, 0); | |
295 | } | |
296 | ||
297 | /* sv_pvn_force() is now a macro using Perl_sv_pvn_force_flags(); | |
298 | * this function provided for binary compatibility only | |
299 | */ | |
300 | ||
301 | char * | |
302 | Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp) | |
303 | { | |
304 | return sv_pvn_force_flags(sv, lp, SV_GMAGIC); | |
305 | } | |
306 | ||
307 | /* sv_pvbyte () is now a macro using Perl_sv_2pv_flags(); | |
308 | * this function provided for binary compatibility only | |
309 | */ | |
310 | ||
311 | char * | |
312 | Perl_sv_pvbyte(pTHX_ SV *sv) | |
313 | { | |
314 | sv_utf8_downgrade(sv,0); | |
315 | return sv_pv(sv); | |
316 | } | |
317 | ||
0feed65a NC |
318 | /* |
319 | =for apidoc sv_pvbyte | |
320 | ||
321 | Use C<SvPVbyte_nolen> instead. | |
322 | ||
323 | =for apidoc sv_pvbyten | |
324 | ||
325 | A private implementation of the C<SvPVbyte> macro for compilers | |
326 | which can't cope with complex macro expressions. Always use the macro | |
327 | instead. | |
328 | ||
329 | =cut | |
330 | */ | |
331 | ||
332 | char * | |
333 | Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp) | |
334 | { | |
335 | sv_utf8_downgrade(sv,0); | |
336 | return sv_pvn(sv,lp); | |
337 | } | |
338 | ||
7ee2227d SP |
339 | /* sv_pvutf8 () is now a macro using Perl_sv_2pv_flags(); |
340 | * this function provided for binary compatibility only | |
341 | */ | |
342 | ||
343 | char * | |
344 | Perl_sv_pvutf8(pTHX_ SV *sv) | |
345 | { | |
346 | sv_utf8_upgrade(sv); | |
347 | return sv_pv(sv); | |
348 | } | |
349 | ||
0feed65a NC |
350 | /* |
351 | =for apidoc sv_pvutf8 | |
352 | ||
353 | Use the C<SvPVutf8_nolen> macro instead | |
354 | ||
355 | =for apidoc sv_pvutf8n | |
356 | ||
357 | A private implementation of the C<SvPVutf8> macro for compilers | |
358 | which can't cope with complex macro expressions. Always use the macro | |
359 | instead. | |
360 | ||
361 | =cut | |
362 | */ | |
363 | ||
364 | char * | |
365 | Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp) | |
366 | { | |
367 | sv_utf8_upgrade(sv); | |
368 | return sv_pvn(sv,lp); | |
369 | } | |
370 | ||
205c02c2 NC |
371 | /* sv_utf8_upgrade() is now a macro using sv_utf8_upgrade_flags(); |
372 | * this function provided for binary compatibility only | |
373 | */ | |
374 | ||
375 | STRLEN | |
376 | Perl_sv_utf8_upgrade(pTHX_ register SV *sv) | |
377 | { | |
378 | return sv_utf8_upgrade_flags(sv, SV_GMAGIC); | |
379 | } | |
380 | ||
7ee2227d SP |
381 | /* |
382 | =for apidoc A|U8 *|uvchr_to_utf8|U8 *d|UV uv | |
383 | ||
384 | Adds the UTF-8 representation of the Native codepoint C<uv> to the end | |
385 | of the string C<d>; C<d> should be have at least C<UTF8_MAXBYTES+1> free | |
386 | bytes available. The return value is the pointer to the byte after the | |
387 | end of the new character. In other words, | |
388 | ||
389 | d = uvchr_to_utf8(d, uv); | |
390 | ||
391 | is the recommended wide native character-aware way of saying | |
392 | ||
393 | *(d++) = uv; | |
394 | ||
395 | =cut | |
396 | */ | |
397 | ||
398 | /* On ASCII machines this is normally a macro but we want a | |
399 | real function in case XS code wants it | |
400 | */ | |
401 | #undef Perl_uvchr_to_utf8 | |
402 | U8 * | |
403 | Perl_uvchr_to_utf8(pTHX_ U8 *d, UV uv) | |
404 | { | |
405 | return Perl_uvuni_to_utf8_flags(aTHX_ d, NATIVE_TO_UNI(uv), 0); | |
406 | } | |
407 | ||
408 | ||
409 | /* | |
410 | =for apidoc A|UV|utf8n_to_uvchr|U8 *s|STRLEN curlen|STRLEN *retlen|U32 | |
411 | flags | |
412 | ||
413 | Returns the native character value of the first character in the string | |
414 | C<s> | |
415 | which is assumed to be in UTF-8 encoding; C<retlen> will be set to the | |
416 | length, in bytes, of that character. | |
417 | ||
418 | Allows length and flags to be passed to low level routine. | |
419 | ||
420 | =cut | |
421 | */ | |
422 | /* On ASCII machines this is normally a macro but we want | |
423 | a real function in case XS code wants it | |
424 | */ | |
425 | #undef Perl_utf8n_to_uvchr | |
426 | UV | |
427 | Perl_utf8n_to_uvchr(pTHX_ const U8 *s, STRLEN curlen, STRLEN *retlen, | |
428 | U32 flags) | |
429 | { | |
430 | const UV uv = Perl_utf8n_to_uvuni(aTHX_ s, curlen, retlen, flags); | |
431 | return UNI_TO_NATIVE(uv); | |
432 | } | |
433 | int | |
434 | Perl_fprintf_nocontext(PerlIO *stream, const char *format, ...) | |
435 | { | |
436 | dTHXs; | |
437 | va_list(arglist); | |
438 | va_start(arglist, format); | |
439 | return PerlIO_vprintf(stream, format, arglist); | |
440 | } | |
441 | ||
442 | int | |
443 | Perl_printf_nocontext(const char *format, ...) | |
444 | { | |
445 | dTHX; | |
446 | va_list(arglist); | |
447 | va_start(arglist, format); | |
448 | return PerlIO_vprintf(PerlIO_stdout(), format, arglist); | |
449 | } | |
450 | ||
451 | #if defined(HUGE_VAL) || (defined(USE_LONG_DOUBLE) && defined(HUGE_VALL)) | |
452 | /* | |
453 | * This hack is to force load of "huge" support from libm.a | |
454 | * So it is in perl for (say) POSIX to use. | |
455 | * Needed for SunOS with Sun's 'acc' for example. | |
456 | */ | |
457 | NV | |
458 | Perl_huge(void) | |
459 | { | |
460 | # if defined(USE_LONG_DOUBLE) && defined(HUGE_VALL) | |
461 | return HUGE_VALL; | |
462 | # endif | |
463 | return HUGE_VAL; | |
464 | } | |
465 | #endif | |
466 | ||
467 | #ifndef USE_SFIO | |
468 | int | |
469 | perlsio_binmode(FILE *fp, int iotype, int mode) | |
470 | { | |
471 | /* | |
472 | * This used to be contents of do_binmode in doio.c | |
473 | */ | |
474 | #ifdef DOSISH | |
475 | # if defined(atarist) || defined(__MINT__) | |
476 | if (!fflush(fp)) { | |
477 | if (mode & O_BINARY) | |
478 | ((FILE *) fp)->_flag |= _IOBIN; | |
479 | else | |
480 | ((FILE *) fp)->_flag &= ~_IOBIN; | |
481 | return 1; | |
482 | } | |
483 | return 0; | |
484 | # else | |
485 | dTHX; | |
486 | #ifdef NETWARE | |
487 | if (PerlLIO_setmode(fp, mode) != -1) { | |
488 | #else | |
489 | if (PerlLIO_setmode(fileno(fp), mode) != -1) { | |
490 | #endif | |
491 | # if defined(WIN32) && defined(__BORLANDC__) | |
492 | /* | |
493 | * The translation mode of the stream is maintained independent | |
494 | of | |
495 | * the translation mode of the fd in the Borland RTL (heavy | |
496 | * digging through their runtime sources reveal). User has to | |
497 | set | |
498 | * the mode explicitly for the stream (though they don't | |
499 | document | |
500 | * this anywhere). GSAR 97-5-24 | |
501 | */ | |
502 | fseek(fp, 0L, 0); | |
503 | if (mode & O_BINARY) | |
504 | fp->flags |= _F_BIN; | |
505 | else | |
506 | fp->flags &= ~_F_BIN; | |
507 | # endif | |
508 | return 1; | |
509 | } | |
510 | else | |
511 | return 0; | |
512 | # endif | |
513 | #else | |
514 | # if defined(USEMYBINMODE) | |
515 | dTHX; | |
516 | if (my_binmode(fp, iotype, mode) != FALSE) | |
517 | return 1; | |
518 | else | |
519 | return 0; | |
520 | # else | |
521 | PERL_UNUSED_ARG(fp); | |
522 | PERL_UNUSED_ARG(iotype); | |
523 | PERL_UNUSED_ARG(mode); | |
524 | return 1; | |
525 | # endif | |
526 | #endif | |
527 | } | |
528 | #endif /* sfio */ | |
529 | ||
f2f0f092 NC |
530 | /* compatibility with versions <= 5.003. */ |
531 | void | |
532 | Perl_gv_fullname(pTHX_ SV *sv, const GV *gv) | |
533 | { | |
534 | gv_fullname3(sv, gv, sv == (const SV*)gv ? "*" : ""); | |
535 | } | |
536 | ||
537 | /* compatibility with versions <= 5.003. */ | |
538 | void | |
539 | Perl_gv_efullname(pTHX_ SV *sv, const GV *gv) | |
540 | { | |
541 | gv_efullname3(sv, gv, sv == (const SV*)gv ? "*" : ""); | |
542 | } | |
543 | ||
2674aeec NC |
544 | void |
545 | Perl_gv_fullname3(pTHX_ SV *sv, const GV *gv, const char *prefix) | |
546 | { | |
547 | gv_fullname4(sv, gv, prefix, TRUE); | |
548 | } | |
549 | ||
550 | void | |
551 | Perl_gv_efullname3(pTHX_ SV *sv, const GV *gv, const char *prefix) | |
552 | { | |
553 | gv_efullname4(sv, gv, prefix, TRUE); | |
554 | } | |
555 | ||
b966a812 SP |
556 | AV * |
557 | Perl_av_fake(pTHX_ register I32 size, register SV **strp) | |
558 | { | |
559 | register SV** ary; | |
560 | register AV * const av = (AV*)NEWSV(9,0); | |
561 | ||
562 | sv_upgrade((SV *)av, SVt_PVAV); | |
563 | Newx(ary,size+1,SV*); | |
564 | AvALLOC(av) = ary; | |
565 | Copy(strp,ary,size,SV*); | |
566 | AvREIFY_only(av); | |
567 | SvPV_set(av, (char*)ary); | |
568 | AvFILLp(av) = size - 1; | |
569 | AvMAX(av) = size - 1; | |
570 | while (size--) { | |
571 | assert (*strp); | |
572 | SvTEMP_off(*strp); | |
573 | strp++; | |
574 | } | |
575 | return av; | |
576 | } | |
577 | ||
34d367cd SP |
578 | bool |
579 | Perl_do_open9(pTHX_ GV *gv, register const char *name, I32 len, int | |
580 | as_raw, | |
581 | int rawmode, int rawperm, PerlIO *supplied_fp, SV *svs, | |
582 | I32 num_svs) | |
583 | { | |
584 | PERL_UNUSED_ARG(num_svs); | |
585 | return do_openn(gv, name, len, as_raw, rawmode, rawperm, | |
586 | supplied_fp, &svs, 1); | |
587 | } | |
588 | ||
589 | int | |
590 | Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int mode) | |
591 | { | |
592 | /* The old body of this is now in non-LAYER part of perlio.c | |
593 | * This is a stub for any XS code which might have been calling it. | |
594 | */ | |
595 | const char *name = ":raw"; | |
596 | #ifdef PERLIO_USING_CRLF | |
597 | if (!(mode & O_BINARY)) | |
598 | name = ":crlf"; | |
599 | #endif | |
600 | return PerlIO_binmode(aTHX_ fp, iotype, mode, name); | |
601 | } | |
602 | ||
603 | ||
7ee2227d SP |
604 | /* |
605 | * Local variables: | |
606 | * c-indentation-style: bsd | |
607 | * c-basic-offset: 4 | |
608 | * indent-tabs-mode: t | |
609 | * End: | |
610 | * | |
611 | * ex: set ts=8 sts=4 sw=4 noet: | |
612 | */ |