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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 NC |
99 | /* |
100 | =for apidoc sv_force_normal | |
101 | ||
102 | Undo various types of fakery on an SV: if the PV is a shared string, make | |
103 | a private copy; if we're a ref, stop refing; if we're a glob, downgrade to | |
104 | an xpvmg. See also C<sv_force_normal_flags>. | |
105 | ||
106 | =cut | |
107 | */ | |
108 | ||
109 | void | |
110 | Perl_sv_force_normal(pTHX_ register SV *sv) | |
111 | { | |
112 | sv_force_normal_flags(sv, 0); | |
113 | } | |
7ee2227d SP |
114 | |
115 | /* sv_setsv() is now a macro using Perl_sv_setsv_flags(); | |
116 | * this function provided for binary compatibility only | |
117 | */ | |
118 | ||
119 | void | |
120 | Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr) | |
121 | { | |
122 | sv_setsv_flags(dstr, sstr, SV_GMAGIC); | |
123 | } | |
124 | ||
125 | /* sv_catpvn() is now a macro using Perl_sv_catpvn_flags(); | |
126 | * this function provided for binary compatibility only | |
127 | */ | |
128 | ||
129 | void | |
130 | Perl_sv_catpvn(pTHX_ SV *dsv, const char* sstr, STRLEN slen) | |
131 | { | |
132 | sv_catpvn_flags(dsv, sstr, slen, SV_GMAGIC); | |
133 | } | |
134 | ||
135 | /* sv_catsv() is now a macro using Perl_sv_catsv_flags(); | |
136 | * this function provided for binary compatibility only | |
137 | */ | |
138 | ||
139 | void | |
140 | Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr) | |
141 | { | |
142 | sv_catsv_flags(dstr, sstr, SV_GMAGIC); | |
143 | } | |
144 | ||
0feed65a NC |
145 | /* |
146 | =for apidoc sv_iv | |
147 | ||
148 | A private implementation of the C<SvIVx> macro for compilers which can't | |
149 | cope with complex macro expressions. Always use the macro instead. | |
150 | ||
151 | =cut | |
152 | */ | |
153 | ||
154 | IV | |
155 | Perl_sv_iv(pTHX_ register SV *sv) | |
156 | { | |
157 | if (SvIOK(sv)) { | |
158 | if (SvIsUV(sv)) | |
159 | return (IV)SvUVX(sv); | |
160 | return SvIVX(sv); | |
161 | } | |
162 | return sv_2iv(sv); | |
163 | } | |
164 | ||
165 | /* | |
166 | =for apidoc sv_uv | |
167 | ||
168 | A private implementation of the C<SvUVx> macro for compilers which can't | |
169 | cope with complex macro expressions. Always use the macro instead. | |
170 | ||
171 | =cut | |
172 | */ | |
173 | ||
174 | UV | |
175 | Perl_sv_uv(pTHX_ register SV *sv) | |
176 | { | |
177 | if (SvIOK(sv)) { | |
178 | if (SvIsUV(sv)) | |
179 | return SvUVX(sv); | |
180 | return (UV)SvIVX(sv); | |
181 | } | |
182 | return sv_2uv(sv); | |
183 | } | |
184 | ||
185 | /* | |
186 | =for apidoc sv_nv | |
187 | ||
188 | A private implementation of the C<SvNVx> macro for compilers which can't | |
189 | cope with complex macro expressions. Always use the macro instead. | |
190 | ||
191 | =cut | |
192 | */ | |
193 | ||
194 | NV | |
195 | Perl_sv_nv(pTHX_ register SV *sv) | |
196 | { | |
197 | if (SvNOK(sv)) | |
198 | return SvNVX(sv); | |
199 | return sv_2nv(sv); | |
200 | } | |
201 | ||
202 | /* | |
203 | =for apidoc sv_pv | |
204 | ||
205 | Use the C<SvPV_nolen> macro instead | |
206 | ||
207 | =for apidoc sv_pvn | |
208 | ||
209 | A private implementation of the C<SvPV> macro for compilers which can't | |
210 | cope with complex macro expressions. Always use the macro instead. | |
211 | ||
212 | =cut | |
213 | */ | |
214 | ||
215 | char * | |
216 | Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp) | |
217 | { | |
218 | if (SvPOK(sv)) { | |
219 | *lp = SvCUR(sv); | |
220 | return SvPVX(sv); | |
221 | } | |
222 | return sv_2pv(sv, lp); | |
223 | } | |
224 | ||
225 | ||
226 | char * | |
227 | Perl_sv_pvn_nomg(pTHX_ register SV *sv, STRLEN *lp) | |
228 | { | |
229 | if (SvPOK(sv)) { | |
230 | *lp = SvCUR(sv); | |
231 | return SvPVX(sv); | |
232 | } | |
233 | return sv_2pv_flags(sv, lp, 0); | |
234 | } | |
235 | ||
7ee2227d SP |
236 | /* sv_pv() is now a macro using SvPV_nolen(); |
237 | * this function provided for binary compatibility only | |
238 | */ | |
239 | ||
240 | char * | |
241 | Perl_sv_pv(pTHX_ SV *sv) | |
242 | { | |
243 | if (SvPOK(sv)) | |
244 | return SvPVX(sv); | |
245 | ||
246 | return sv_2pv(sv, 0); | |
247 | } | |
248 | ||
249 | /* sv_pvn_force() is now a macro using Perl_sv_pvn_force_flags(); | |
250 | * this function provided for binary compatibility only | |
251 | */ | |
252 | ||
253 | char * | |
254 | Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp) | |
255 | { | |
256 | return sv_pvn_force_flags(sv, lp, SV_GMAGIC); | |
257 | } | |
258 | ||
259 | /* sv_pvbyte () is now a macro using Perl_sv_2pv_flags(); | |
260 | * this function provided for binary compatibility only | |
261 | */ | |
262 | ||
263 | char * | |
264 | Perl_sv_pvbyte(pTHX_ SV *sv) | |
265 | { | |
266 | sv_utf8_downgrade(sv,0); | |
267 | return sv_pv(sv); | |
268 | } | |
269 | ||
0feed65a NC |
270 | /* |
271 | =for apidoc sv_pvbyte | |
272 | ||
273 | Use C<SvPVbyte_nolen> instead. | |
274 | ||
275 | =for apidoc sv_pvbyten | |
276 | ||
277 | A private implementation of the C<SvPVbyte> macro for compilers | |
278 | which can't cope with complex macro expressions. Always use the macro | |
279 | instead. | |
280 | ||
281 | =cut | |
282 | */ | |
283 | ||
284 | char * | |
285 | Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp) | |
286 | { | |
287 | sv_utf8_downgrade(sv,0); | |
288 | return sv_pvn(sv,lp); | |
289 | } | |
290 | ||
7ee2227d SP |
291 | /* sv_pvutf8 () is now a macro using Perl_sv_2pv_flags(); |
292 | * this function provided for binary compatibility only | |
293 | */ | |
294 | ||
295 | char * | |
296 | Perl_sv_pvutf8(pTHX_ SV *sv) | |
297 | { | |
298 | sv_utf8_upgrade(sv); | |
299 | return sv_pv(sv); | |
300 | } | |
301 | ||
0feed65a NC |
302 | /* |
303 | =for apidoc sv_pvutf8 | |
304 | ||
305 | Use the C<SvPVutf8_nolen> macro instead | |
306 | ||
307 | =for apidoc sv_pvutf8n | |
308 | ||
309 | A private implementation of the C<SvPVutf8> macro for compilers | |
310 | which can't cope with complex macro expressions. Always use the macro | |
311 | instead. | |
312 | ||
313 | =cut | |
314 | */ | |
315 | ||
316 | char * | |
317 | Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp) | |
318 | { | |
319 | sv_utf8_upgrade(sv); | |
320 | return sv_pvn(sv,lp); | |
321 | } | |
322 | ||
205c02c2 NC |
323 | /* sv_utf8_upgrade() is now a macro using sv_utf8_upgrade_flags(); |
324 | * this function provided for binary compatibility only | |
325 | */ | |
326 | ||
327 | STRLEN | |
328 | Perl_sv_utf8_upgrade(pTHX_ register SV *sv) | |
329 | { | |
330 | return sv_utf8_upgrade_flags(sv, SV_GMAGIC); | |
331 | } | |
332 | ||
7ee2227d SP |
333 | /* |
334 | =for apidoc A|U8 *|uvchr_to_utf8|U8 *d|UV uv | |
335 | ||
336 | Adds the UTF-8 representation of the Native codepoint C<uv> to the end | |
337 | of the string C<d>; C<d> should be have at least C<UTF8_MAXBYTES+1> free | |
338 | bytes available. The return value is the pointer to the byte after the | |
339 | end of the new character. In other words, | |
340 | ||
341 | d = uvchr_to_utf8(d, uv); | |
342 | ||
343 | is the recommended wide native character-aware way of saying | |
344 | ||
345 | *(d++) = uv; | |
346 | ||
347 | =cut | |
348 | */ | |
349 | ||
350 | /* On ASCII machines this is normally a macro but we want a | |
351 | real function in case XS code wants it | |
352 | */ | |
353 | #undef Perl_uvchr_to_utf8 | |
354 | U8 * | |
355 | Perl_uvchr_to_utf8(pTHX_ U8 *d, UV uv) | |
356 | { | |
357 | return Perl_uvuni_to_utf8_flags(aTHX_ d, NATIVE_TO_UNI(uv), 0); | |
358 | } | |
359 | ||
360 | ||
361 | /* | |
362 | =for apidoc A|UV|utf8n_to_uvchr|U8 *s|STRLEN curlen|STRLEN *retlen|U32 | |
363 | flags | |
364 | ||
365 | Returns the native character value of the first character in the string | |
366 | C<s> | |
367 | which is assumed to be in UTF-8 encoding; C<retlen> will be set to the | |
368 | length, in bytes, of that character. | |
369 | ||
370 | Allows length and flags to be passed to low level routine. | |
371 | ||
372 | =cut | |
373 | */ | |
374 | /* On ASCII machines this is normally a macro but we want | |
375 | a real function in case XS code wants it | |
376 | */ | |
377 | #undef Perl_utf8n_to_uvchr | |
378 | UV | |
379 | Perl_utf8n_to_uvchr(pTHX_ const U8 *s, STRLEN curlen, STRLEN *retlen, | |
380 | U32 flags) | |
381 | { | |
382 | const UV uv = Perl_utf8n_to_uvuni(aTHX_ s, curlen, retlen, flags); | |
383 | return UNI_TO_NATIVE(uv); | |
384 | } | |
385 | int | |
386 | Perl_fprintf_nocontext(PerlIO *stream, const char *format, ...) | |
387 | { | |
388 | dTHXs; | |
389 | va_list(arglist); | |
390 | va_start(arglist, format); | |
391 | return PerlIO_vprintf(stream, format, arglist); | |
392 | } | |
393 | ||
394 | int | |
395 | Perl_printf_nocontext(const char *format, ...) | |
396 | { | |
397 | dTHX; | |
398 | va_list(arglist); | |
399 | va_start(arglist, format); | |
400 | return PerlIO_vprintf(PerlIO_stdout(), format, arglist); | |
401 | } | |
402 | ||
403 | #if defined(HUGE_VAL) || (defined(USE_LONG_DOUBLE) && defined(HUGE_VALL)) | |
404 | /* | |
405 | * This hack is to force load of "huge" support from libm.a | |
406 | * So it is in perl for (say) POSIX to use. | |
407 | * Needed for SunOS with Sun's 'acc' for example. | |
408 | */ | |
409 | NV | |
410 | Perl_huge(void) | |
411 | { | |
412 | # if defined(USE_LONG_DOUBLE) && defined(HUGE_VALL) | |
413 | return HUGE_VALL; | |
414 | # endif | |
415 | return HUGE_VAL; | |
416 | } | |
417 | #endif | |
418 | ||
419 | #ifndef USE_SFIO | |
420 | int | |
421 | perlsio_binmode(FILE *fp, int iotype, int mode) | |
422 | { | |
423 | /* | |
424 | * This used to be contents of do_binmode in doio.c | |
425 | */ | |
426 | #ifdef DOSISH | |
427 | # if defined(atarist) || defined(__MINT__) | |
428 | if (!fflush(fp)) { | |
429 | if (mode & O_BINARY) | |
430 | ((FILE *) fp)->_flag |= _IOBIN; | |
431 | else | |
432 | ((FILE *) fp)->_flag &= ~_IOBIN; | |
433 | return 1; | |
434 | } | |
435 | return 0; | |
436 | # else | |
437 | dTHX; | |
438 | #ifdef NETWARE | |
439 | if (PerlLIO_setmode(fp, mode) != -1) { | |
440 | #else | |
441 | if (PerlLIO_setmode(fileno(fp), mode) != -1) { | |
442 | #endif | |
443 | # if defined(WIN32) && defined(__BORLANDC__) | |
444 | /* | |
445 | * The translation mode of the stream is maintained independent | |
446 | of | |
447 | * the translation mode of the fd in the Borland RTL (heavy | |
448 | * digging through their runtime sources reveal). User has to | |
449 | set | |
450 | * the mode explicitly for the stream (though they don't | |
451 | document | |
452 | * this anywhere). GSAR 97-5-24 | |
453 | */ | |
454 | fseek(fp, 0L, 0); | |
455 | if (mode & O_BINARY) | |
456 | fp->flags |= _F_BIN; | |
457 | else | |
458 | fp->flags &= ~_F_BIN; | |
459 | # endif | |
460 | return 1; | |
461 | } | |
462 | else | |
463 | return 0; | |
464 | # endif | |
465 | #else | |
466 | # if defined(USEMYBINMODE) | |
467 | dTHX; | |
468 | if (my_binmode(fp, iotype, mode) != FALSE) | |
469 | return 1; | |
470 | else | |
471 | return 0; | |
472 | # else | |
473 | PERL_UNUSED_ARG(fp); | |
474 | PERL_UNUSED_ARG(iotype); | |
475 | PERL_UNUSED_ARG(mode); | |
476 | return 1; | |
477 | # endif | |
478 | #endif | |
479 | } | |
480 | #endif /* sfio */ | |
481 | ||
f2f0f092 NC |
482 | /* compatibility with versions <= 5.003. */ |
483 | void | |
484 | Perl_gv_fullname(pTHX_ SV *sv, const GV *gv) | |
485 | { | |
486 | gv_fullname3(sv, gv, sv == (const SV*)gv ? "*" : ""); | |
487 | } | |
488 | ||
489 | /* compatibility with versions <= 5.003. */ | |
490 | void | |
491 | Perl_gv_efullname(pTHX_ SV *sv, const GV *gv) | |
492 | { | |
493 | gv_efullname3(sv, gv, sv == (const SV*)gv ? "*" : ""); | |
494 | } | |
495 | ||
2674aeec NC |
496 | void |
497 | Perl_gv_fullname3(pTHX_ SV *sv, const GV *gv, const char *prefix) | |
498 | { | |
499 | gv_fullname4(sv, gv, prefix, TRUE); | |
500 | } | |
501 | ||
502 | void | |
503 | Perl_gv_efullname3(pTHX_ SV *sv, const GV *gv, const char *prefix) | |
504 | { | |
505 | gv_efullname4(sv, gv, prefix, TRUE); | |
506 | } | |
507 | ||
b966a812 SP |
508 | AV * |
509 | Perl_av_fake(pTHX_ register I32 size, register SV **strp) | |
510 | { | |
511 | register SV** ary; | |
512 | register AV * const av = (AV*)NEWSV(9,0); | |
513 | ||
514 | sv_upgrade((SV *)av, SVt_PVAV); | |
515 | Newx(ary,size+1,SV*); | |
516 | AvALLOC(av) = ary; | |
517 | Copy(strp,ary,size,SV*); | |
518 | AvREIFY_only(av); | |
519 | SvPV_set(av, (char*)ary); | |
520 | AvFILLp(av) = size - 1; | |
521 | AvMAX(av) = size - 1; | |
522 | while (size--) { | |
523 | assert (*strp); | |
524 | SvTEMP_off(*strp); | |
525 | strp++; | |
526 | } | |
527 | return av; | |
528 | } | |
529 | ||
34d367cd SP |
530 | bool |
531 | Perl_do_open9(pTHX_ GV *gv, register const char *name, I32 len, int | |
532 | as_raw, | |
533 | int rawmode, int rawperm, PerlIO *supplied_fp, SV *svs, | |
534 | I32 num_svs) | |
535 | { | |
536 | PERL_UNUSED_ARG(num_svs); | |
537 | return do_openn(gv, name, len, as_raw, rawmode, rawperm, | |
538 | supplied_fp, &svs, 1); | |
539 | } | |
540 | ||
541 | int | |
542 | Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int mode) | |
543 | { | |
544 | /* The old body of this is now in non-LAYER part of perlio.c | |
545 | * This is a stub for any XS code which might have been calling it. | |
546 | */ | |
547 | const char *name = ":raw"; | |
548 | #ifdef PERLIO_USING_CRLF | |
549 | if (!(mode & O_BINARY)) | |
550 | name = ":crlf"; | |
551 | #endif | |
552 | return PerlIO_binmode(aTHX_ fp, iotype, mode, name); | |
553 | } | |
554 | ||
555 | ||
7ee2227d SP |
556 | /* |
557 | * Local variables: | |
558 | * c-indentation-style: bsd | |
559 | * c-basic-offset: 4 | |
560 | * indent-tabs-mode: t | |
561 | * End: | |
562 | * | |
563 | * ex: set ts=8 sts=4 sw=4 noet: | |
564 | */ |