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ensure locale_name_on_entry isn't clobbered
[perl5.git] / vutil.c
CommitLineData
abc6d738
FC
1/* This file is part of the "version" CPAN distribution. Please avoid
2 editing it in the perl core. */
3
14f3031b
JP
4#ifdef PERL_CORE
5# include "vutil.h"
d4e59e62 6#endif
d4e59e62 7
abc6d738
FC
8#define VERSION_MAX 0x7FFFFFFF
9
10/*
11=for apidoc prescan_version
12
13Validate that a given string can be parsed as a version object, but doesn't
14actually perform the parsing. Can use either strict or lax validation rules.
15Can optionally set a number of hint variables to save the parsing code
16some time when tokenizing.
17
18=cut
19*/
20const char *
24120986 21#ifdef VUTIL_REPLACE_CORE
d4e59e62
FC
22Perl_prescan_version2(pTHX_ const char *s, bool strict,
23#else
abc6d738 24Perl_prescan_version(pTHX_ const char *s, bool strict,
d4e59e62 25#endif
abc6d738
FC
26 const char **errstr,
27 bool *sqv, int *ssaw_decimal, int *swidth, bool *salpha) {
28 bool qv = (sqv ? *sqv : FALSE);
29 int width = 3;
30 int saw_decimal = 0;
31 bool alpha = FALSE;
32 const char *d = s;
33
130cad93
LT
34 PERL_ARGS_ASSERT_PRESCAN_VERSION;
35 PERL_UNUSED_CONTEXT;
abc6d738
FC
36
37 if (qv && isDIGIT(*d))
38 goto dotted_decimal_version;
39
40 if (*d == 'v') { /* explicit v-string */
41 d++;
42 if (isDIGIT(*d)) {
43 qv = TRUE;
44 }
45 else { /* degenerate v-string */
46 /* requires v1.2.3 */
47 BADVERSION(s,errstr,"Invalid version format (dotted-decimal versions require at least three parts)");
48 }
49
50dotted_decimal_version:
51 if (strict && d[0] == '0' && isDIGIT(d[1])) {
52 /* no leading zeros allowed */
53 BADVERSION(s,errstr,"Invalid version format (no leading zeros)");
54 }
55
56 while (isDIGIT(*d)) /* integer part */
57 d++;
58
59 if (*d == '.')
60 {
61 saw_decimal++;
62 d++; /* decimal point */
63 }
64 else
65 {
66 if (strict) {
67 /* require v1.2.3 */
68 BADVERSION(s,errstr,"Invalid version format (dotted-decimal versions require at least three parts)");
69 }
70 else {
71 goto version_prescan_finish;
72 }
73 }
74
75 {
76 int i = 0;
77 int j = 0;
78 while (isDIGIT(*d)) { /* just keep reading */
79 i++;
80 while (isDIGIT(*d)) {
81 d++; j++;
82 /* maximum 3 digits between decimal */
83 if (strict && j > 3) {
84 BADVERSION(s,errstr,"Invalid version format (maximum 3 digits between decimals)");
85 }
86 }
87 if (*d == '_') {
88 if (strict) {
89 BADVERSION(s,errstr,"Invalid version format (no underscores)");
90 }
91 if ( alpha ) {
92 BADVERSION(s,errstr,"Invalid version format (multiple underscores)");
93 }
94 d++;
95 alpha = TRUE;
96 }
97 else if (*d == '.') {
98 if (alpha) {
99 BADVERSION(s,errstr,"Invalid version format (underscores before decimal)");
100 }
101 saw_decimal++;
102 d++;
103 }
104 else if (!isDIGIT(*d)) {
105 break;
106 }
107 j = 0;
108 }
109
110 if (strict && i < 2) {
111 /* requires v1.2.3 */
112 BADVERSION(s,errstr,"Invalid version format (dotted-decimal versions require at least three parts)");
113 }
114 }
115 } /* end if dotted-decimal */
116 else
117 { /* decimal versions */
118 int j = 0; /* may need this later */
119 /* special strict case for leading '.' or '0' */
120 if (strict) {
121 if (*d == '.') {
122 BADVERSION(s,errstr,"Invalid version format (0 before decimal required)");
123 }
124 if (*d == '0' && isDIGIT(d[1])) {
125 BADVERSION(s,errstr,"Invalid version format (no leading zeros)");
126 }
127 }
128
129 /* and we never support negative versions */
130 if ( *d == '-') {
131 BADVERSION(s,errstr,"Invalid version format (negative version number)");
132 }
133
134 /* consume all of the integer part */
135 while (isDIGIT(*d))
136 d++;
137
138 /* look for a fractional part */
139 if (*d == '.') {
140 /* we found it, so consume it */
141 saw_decimal++;
142 d++;
143 }
144 else if (!*d || *d == ';' || isSPACE(*d) || *d == '{' || *d == '}') {
145 if ( d == s ) {
146 /* found nothing */
147 BADVERSION(s,errstr,"Invalid version format (version required)");
148 }
149 /* found just an integer */
150 goto version_prescan_finish;
151 }
152 else if ( d == s ) {
153 /* didn't find either integer or period */
154 BADVERSION(s,errstr,"Invalid version format (non-numeric data)");
155 }
156 else if (*d == '_') {
157 /* underscore can't come after integer part */
158 if (strict) {
159 BADVERSION(s,errstr,"Invalid version format (no underscores)");
160 }
161 else if (isDIGIT(d[1])) {
162 BADVERSION(s,errstr,"Invalid version format (alpha without decimal)");
163 }
164 else {
165 BADVERSION(s,errstr,"Invalid version format (misplaced underscore)");
166 }
167 }
168 else {
169 /* anything else after integer part is just invalid data */
170 BADVERSION(s,errstr,"Invalid version format (non-numeric data)");
171 }
172
173 /* scan the fractional part after the decimal point*/
174
175 if (!isDIGIT(*d) && (strict || ! (!*d || *d == ';' || isSPACE(*d) || *d == '{' || *d == '}') )) {
176 /* strict or lax-but-not-the-end */
177 BADVERSION(s,errstr,"Invalid version format (fractional part required)");
178 }
179
180 while (isDIGIT(*d)) {
181 d++; j++;
182 if (*d == '.' && isDIGIT(d[-1])) {
183 if (alpha) {
184 BADVERSION(s,errstr,"Invalid version format (underscores before decimal)");
185 }
186 if (strict) {
187 BADVERSION(s,errstr,"Invalid version format (dotted-decimal versions must begin with 'v')");
188 }
189 d = (char *)s; /* start all over again */
190 qv = TRUE;
191 goto dotted_decimal_version;
192 }
193 if (*d == '_') {
194 if (strict) {
195 BADVERSION(s,errstr,"Invalid version format (no underscores)");
196 }
197 if ( alpha ) {
198 BADVERSION(s,errstr,"Invalid version format (multiple underscores)");
199 }
200 if ( ! isDIGIT(d[1]) ) {
201 BADVERSION(s,errstr,"Invalid version format (misplaced underscore)");
202 }
203 width = j;
204 d++;
205 alpha = TRUE;
206 }
207 }
208 }
209
210version_prescan_finish:
211 while (isSPACE(*d))
212 d++;
213
214 if (!isDIGIT(*d) && (! (!*d || *d == ';' || *d == '{' || *d == '}') )) {
215 /* trailing non-numeric data */
216 BADVERSION(s,errstr,"Invalid version format (non-numeric data)");
217 }
14f3031b
JP
218 if (saw_decimal > 1 && d[-1] == '.') {
219 /* no trailing period allowed */
220 BADVERSION(s,errstr,"Invalid version format (trailing decimal)");
221 }
222
abc6d738
FC
223
224 if (sqv)
225 *sqv = qv;
226 if (swidth)
227 *swidth = width;
228 if (ssaw_decimal)
229 *ssaw_decimal = saw_decimal;
230 if (salpha)
231 *salpha = alpha;
232 return d;
233}
234
235/*
236=for apidoc scan_version
237
238Returns a pointer to the next character after the parsed
239version string, as well as upgrading the passed in SV to
240an RV.
241
242Function must be called with an already existing SV like
243
244 sv = newSV(0);
245 s = scan_version(s, SV *sv, bool qv);
246
247Performs some preprocessing to the string to ensure that
248it has the correct characteristics of a version. Flags the
249object if it contains an underscore (which denotes this
250is an alpha version). The boolean qv denotes that the version
251should be interpreted as if it had multiple decimals, even if
252it doesn't.
253
254=cut
255*/
256
257const char *
24120986 258#ifdef VUTIL_REPLACE_CORE
d4e59e62
FC
259Perl_scan_version2(pTHX_ const char *s, SV *rv, bool qv)
260#else
abc6d738 261Perl_scan_version(pTHX_ const char *s, SV *rv, bool qv)
d4e59e62 262#endif
abc6d738
FC
263{
264 const char *start = s;
265 const char *pos;
266 const char *last;
267 const char *errstr = NULL;
268 int saw_decimal = 0;
269 int width = 3;
270 bool alpha = FALSE;
271 bool vinf = FALSE;
272 AV * av;
273 SV * hv;
274
275 PERL_ARGS_ASSERT_SCAN_VERSION;
276
277 while (isSPACE(*s)) /* leading whitespace is OK */
278 s++;
279
d4e59e62 280 last = PRESCAN_VERSION(s, FALSE, &errstr, &qv, &saw_decimal, &width, &alpha);
abc6d738
FC
281 if (errstr) {
282 /* "undef" is a special case and not an error */
05402f6b 283 if ( ! ( *s == 'u' && strEQ(s+1,"ndef")) ) {
abc6d738
FC
284 Perl_croak(aTHX_ "%s", errstr);
285 }
286 }
287
288 start = s;
289 if (*s == 'v')
290 s++;
291 pos = s;
292
293 /* Now that we are through the prescan, start creating the object */
294 av = newAV();
295 hv = newSVrv(rv, "version"); /* create an SV and upgrade the RV */
296 (void)sv_upgrade(hv, SVt_PVHV); /* needs to be an HV type */
297
298#ifndef NODEFAULT_SHAREKEYS
299 HvSHAREKEYS_on(hv); /* key-sharing on by default */
300#endif
301
302 if ( qv )
303 (void)hv_stores(MUTABLE_HV(hv), "qv", newSViv(qv));
304 if ( alpha )
305 (void)hv_stores(MUTABLE_HV(hv), "alpha", newSViv(alpha));
306 if ( !qv && width < 3 )
307 (void)hv_stores(MUTABLE_HV(hv), "width", newSViv(width));
308
14f3031b 309 while (isDIGIT(*pos) || *pos == '_')
abc6d738
FC
310 pos++;
311 if (!isALPHA(*pos)) {
312 I32 rev;
313
314 for (;;) {
315 rev = 0;
316 {
317 /* this is atoi() that delimits on underscores */
318 const char *end = pos;
319 I32 mult = 1;
320 I32 orev;
321
322 /* the following if() will only be true after the decimal
323 * point of a version originally created with a bare
324 * floating point number, i.e. not quoted in any way
325 */
326 if ( !qv && s > start && saw_decimal == 1 ) {
327 mult *= 100;
328 while ( s < end ) {
14f3031b
JP
329 if (*s == '_')
330 continue;
abc6d738
FC
331 orev = rev;
332 rev += (*s - '0') * mult;
333 mult /= 10;
334 if ( (PERL_ABS(orev) > PERL_ABS(rev))
335 || (PERL_ABS(rev) > VERSION_MAX )) {
336 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
337 "Integer overflow in version %d",VERSION_MAX);
338 s = end - 1;
339 rev = VERSION_MAX;
340 vinf = 1;
341 }
342 s++;
343 if ( *s == '_' )
344 s++;
345 }
346 }
347 else {
348 while (--end >= s) {
14f3031b
JP
349 int i;
350 if (*end == '_')
351 continue;
352 i = (*end - '0');
353 if ( (mult == VERSION_MAX)
354 || (i > VERSION_MAX / mult)
355 || (i * mult > VERSION_MAX - rev))
356 {
abc6d738
FC
357 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
358 "Integer overflow in version");
359 end = s - 1;
360 rev = VERSION_MAX;
361 vinf = 1;
362 }
14f3031b
JP
363 else
364 rev += i * mult;
365
366 if (mult > VERSION_MAX / 10)
367 mult = VERSION_MAX;
368 else
369 mult *= 10;
abc6d738
FC
370 }
371 }
372 }
373
374 /* Append revision */
375 av_push(av, newSViv(rev));
376 if ( vinf ) {
377 s = last;
378 break;
379 }
14f3031b
JP
380 else if ( *pos == '.' ) {
381 pos++;
382 if (qv) {
383 while (*pos == '0')
384 ++pos;
385 }
386 s = pos;
387 }
abc6d738
FC
388 else if ( *pos == '_' && isDIGIT(pos[1]) )
389 s = ++pos;
390 else if ( *pos == ',' && isDIGIT(pos[1]) )
391 s = ++pos;
392 else if ( isDIGIT(*pos) )
393 s = pos;
394 else {
395 s = pos;
396 break;
397 }
398 if ( qv ) {
14f3031b 399 while ( isDIGIT(*pos) || *pos == '_')
abc6d738
FC
400 pos++;
401 }
402 else {
403 int digits = 0;
404 while ( ( isDIGIT(*pos) || *pos == '_' ) && digits < 3 ) {
405 if ( *pos != '_' )
406 digits++;
407 pos++;
408 }
409 }
410 }
411 }
412 if ( qv ) { /* quoted versions always get at least three terms*/
05402f6b 413 SSize_t len = AvFILLp(av);
abc6d738
FC
414 /* This for loop appears to trigger a compiler bug on OS X, as it
415 loops infinitely. Yes, len is negative. No, it makes no sense.
416 Compiler in question is:
417 gcc version 3.3 20030304 (Apple Computer, Inc. build 1640)
418 for ( len = 2 - len; len > 0; len-- )
419 av_push(MUTABLE_AV(sv), newSViv(0));
420 */
421 len = 2 - len;
422 while (len-- > 0)
423 av_push(av, newSViv(0));
424 }
425
426 /* need to save off the current version string for later */
427 if ( vinf ) {
428 SV * orig = newSVpvn("v.Inf", sizeof("v.Inf")-1);
429 (void)hv_stores(MUTABLE_HV(hv), "original", orig);
430 (void)hv_stores(MUTABLE_HV(hv), "vinf", newSViv(1));
431 }
432 else if ( s > start ) {
433 SV * orig = newSVpvn(start,s-start);
434 if ( qv && saw_decimal == 1 && *start != 'v' ) {
435 /* need to insert a v to be consistent */
436 sv_insert(orig, 0, 0, "v", 1);
437 }
438 (void)hv_stores(MUTABLE_HV(hv), "original", orig);
439 }
440 else {
441 (void)hv_stores(MUTABLE_HV(hv), "original", newSVpvs("0"));
442 av_push(av, newSViv(0));
443 }
444
445 /* And finally, store the AV in the hash */
446 (void)hv_stores(MUTABLE_HV(hv), "version", newRV_noinc(MUTABLE_SV(av)));
447
448 /* fix RT#19517 - special case 'undef' as string */
05402f6b 449 if ( *s == 'u' && strEQ(s+1,"ndef") ) {
abc6d738
FC
450 s += 5;
451 }
452
453 return s;
454}
455
456/*
457=for apidoc new_version
458
459Returns a new version object based on the passed in SV:
460
461 SV *sv = new_version(SV *ver);
462
463Does not alter the passed in ver SV. See "upg_version" if you
464want to upgrade the SV.
465
466=cut
467*/
468
469SV *
24120986 470#ifdef VUTIL_REPLACE_CORE
d4e59e62
FC
471Perl_new_version2(pTHX_ SV *ver)
472#else
abc6d738 473Perl_new_version(pTHX_ SV *ver)
d4e59e62 474#endif
abc6d738 475{
abc6d738
FC
476 SV * const rv = newSV(0);
477 PERL_ARGS_ASSERT_NEW_VERSION;
05402f6b 478 if ( ISA_VERSION_OBJ(ver) ) /* can just copy directly */
abc6d738
FC
479 {
480 SSize_t key;
481 AV * const av = newAV();
482 AV *sav;
483 /* This will get reblessed later if a derived class*/
484 SV * const hv = newSVrv(rv, "version");
485 (void)sv_upgrade(hv, SVt_PVHV); /* needs to be an HV type */
486#ifndef NODEFAULT_SHAREKEYS
487 HvSHAREKEYS_on(hv); /* key-sharing on by default */
488#endif
489
490 if ( SvROK(ver) )
491 ver = SvRV(ver);
492
493 /* Begin copying all of the elements */
817794ed 494 if ( hv_exists(MUTABLE_HV(ver), "qv", 2) )
abc6d738
FC
495 (void)hv_stores(MUTABLE_HV(hv), "qv", newSViv(1));
496
817794ed 497 if ( hv_exists(MUTABLE_HV(ver), "alpha", 5) )
abc6d738 498 (void)hv_stores(MUTABLE_HV(hv), "alpha", newSViv(1));
abc6d738 499 {
05402f6b
JP
500 SV ** svp = hv_fetchs(MUTABLE_HV(ver), "width", FALSE);
501 if(svp) {
502 const I32 width = SvIV(*svp);
503 (void)hv_stores(MUTABLE_HV(hv), "width", newSViv(width));
504 }
abc6d738 505 }
abc6d738 506 {
05402f6b
JP
507 SV ** svp = hv_fetchs(MUTABLE_HV(ver), "original", FALSE);
508 if(svp)
509 (void)hv_stores(MUTABLE_HV(hv), "original", newSVsv(*svp));
abc6d738 510 }
abc6d738
FC
511 sav = MUTABLE_AV(SvRV(*hv_fetchs(MUTABLE_HV(ver), "version", FALSE)));
512 /* This will get reblessed later if a derived class*/
513 for ( key = 0; key <= av_len(sav); key++ )
514 {
05402f6b
JP
515 SV * const sv = *av_fetch(sav, key, FALSE);
516 const I32 rev = SvIV(sv);
abc6d738
FC
517 av_push(av, newSViv(rev));
518 }
519
520 (void)hv_stores(MUTABLE_HV(hv), "version", newRV_noinc(MUTABLE_SV(av)));
521 return rv;
522 }
523#ifdef SvVOK
524 {
525 const MAGIC* const mg = SvVSTRING_mg(ver);
526 if ( mg ) { /* already a v-string */
527 const STRLEN len = mg->mg_len;
05402f6b 528 const char * const version = (const char*)mg->mg_ptr;
14f3031b
JP
529 char *raw, *under;
530 static const char underscore[] = "_";
abc6d738 531 sv_setpvn(rv,version,len);
14f3031b
JP
532 raw = SvPV_nolen(rv);
533 under = ninstr(raw, raw+len, underscore, underscore + 1);
534 if (under) {
535 Move(under + 1, under, raw + len - under - 1, char);
2324bdb9 536 SvCUR_set(rv, SvCUR(rv) - 1);
14f3031b
JP
537 *SvEND(rv) = '\0';
538 }
abc6d738
FC
539 /* this is for consistency with the pure Perl class */
540 if ( isDIGIT(*version) )
541 sv_insert(rv, 0, 0, "v", 1);
abc6d738
FC
542 }
543 else {
544#endif
95a23f5d 545 SvSetSV_nosteal(rv, ver); /* make a duplicate */
abc6d738
FC
546#ifdef SvVOK
547 }
548 }
549#endif
9190f8ab
JP
550 sv_2mortal(rv); /* in case upg_version croaks before it returns */
551 return SvREFCNT_inc_NN(UPG_VERSION(rv, FALSE));
abc6d738
FC
552}
553
554/*
555=for apidoc upg_version
556
557In-place upgrade of the supplied SV to a version object.
558
559 SV *sv = upg_version(SV *sv, bool qv);
560
561Returns a pointer to the upgraded SV. Set the boolean qv if you want
562to force this SV to be interpreted as an "extended" version.
563
564=cut
565*/
566
567SV *
24120986 568#ifdef VUTIL_REPLACE_CORE
d4e59e62
FC
569Perl_upg_version2(pTHX_ SV *ver, bool qv)
570#else
abc6d738 571Perl_upg_version(pTHX_ SV *ver, bool qv)
d4e59e62 572#endif
abc6d738 573{
8633b539
DM
574
575#ifdef dVAR
576 dVAR;
577#endif
578
abc6d738
FC
579 const char *version, *s;
580#ifdef SvVOK
581 const MAGIC *mg;
582#endif
583
d2b110e6 584#if PERL_VERSION_LT(5,19,8) && defined(USE_ITHREADS)
e2ca569e 585 ENTER;
d2b110e6 586#endif
abc6d738
FC
587 PERL_ARGS_ASSERT_UPG_VERSION;
588
9190f8ab
JP
589 if ( (SvUOK(ver) && SvUVX(ver) > VERSION_MAX)
590 || (SvIOK(ver) && SvIVX(ver) > VERSION_MAX) ) {
591 /* out of bounds [unsigned] integer */
592 STRLEN len;
593 char tbuf[64];
594 len = my_snprintf(tbuf, sizeof(tbuf), "%d", VERSION_MAX);
595 version = savepvn(tbuf, len);
596 SAVEFREEPV(version);
597 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
598 "Integer overflow in version %d",VERSION_MAX);
599 }
600 else if ( SvUOK(ver) || SvIOK(ver))
24120986 601#if PERL_VERSION_LT(5,17,2)
9190f8ab 602VER_IV:
24120986 603#endif
9190f8ab
JP
604 {
605 version = savesvpv(ver);
606 SAVEFREEPV(version);
607 }
608 else if (SvNOK(ver) && !( SvPOK(ver) && SvCUR(ver) == 3 ) )
24120986 609#if PERL_VERSION_LT(5,17,2)
9190f8ab 610VER_NV:
24120986 611#endif
abc6d738
FC
612 {
613 STRLEN len;
614
615 /* may get too much accuracy */
616 char tbuf[64];
617 SV *sv = SvNVX(ver) > 10e50 ? newSV(64) : 0;
618 char *buf;
14f3031b
JP
619
620#if PERL_VERSION_GE(5,19,0)
621 if (SvPOK(ver)) {
622 /* dualvar? */
623 goto VER_PV;
624 }
625#endif
f57000bc 626#ifdef USE_LOCALE_NUMERIC
190ce35b 627
d3a5b29c 628 {
190ce35b
KW
629 /* This may or may not be called from code that has switched
630 * locales without letting perl know, therefore we have to find it
631 * from first principals. See [perl #121930]. */
632
e9bc6d6b
KW
633 /* In windows, or not threaded, or not thread-safe, if it isn't C,
634 * set it to C. */
635
636# ifndef USE_POSIX_2008_LOCALE
637
190ce35b
KW
638 const char * locale_name_on_entry;
639
49d7d366
KW
640 LC_NUMERIC_LOCK(0); /* Start critical section */
641
190ce35b
KW
642 locale_name_on_entry = setlocale(LC_NUMERIC, NULL);
643 if ( strNE(locale_name_on_entry, "C")
644 && strNE(locale_name_on_entry, "POSIX"))
645 {
bcb1da5c
TC
646 /* the setlocale() call might free or overwrite the name */
647 locale_name_on_entry = savepv(locale_name_on_entry);
190ce35b
KW
648 setlocale(LC_NUMERIC, "C");
649 }
650 else { /* This value indicates to the restore code that we didn't
651 change the locale */
652 locale_name_on_entry = NULL;
653 }
49d7d366 654
e9bc6d6b
KW
655# else
656
657 const locale_t locale_obj_on_entry = uselocale((locale_t) 0);
658 const char * locale_name_on_entry = NULL;
659 DECLARATION_FOR_LC_NUMERIC_MANIPULATION;
660
661 if (locale_obj_on_entry == LC_GLOBAL_LOCALE) {
662
663 /* in the global locale, we can call system setlocale and if it
664 * isn't C, set it to C. */
665 LC_NUMERIC_LOCK(0);
666
667 locale_name_on_entry = setlocale(LC_NUMERIC, NULL);
668 if ( strNE(locale_name_on_entry, "C")
669 && strNE(locale_name_on_entry, "POSIX"))
670 {
bcb1da5c
TC
671 /* the setlocale() call might free or overwrite the name */
672 locale_name_on_entry = savepv(locale_name_on_entry);
e9bc6d6b
KW
673 setlocale(LC_NUMERIC, "C");
674 }
675 else { /* This value indicates to the restore code that we
676 didn't change the locale */
677 locale_name_on_entry = NULL;
d3a5b29c
JP
678 }
679 }
e9bc6d6b
KW
680 else if (locale_obj_on_entry == PL_underlying_numeric_obj) {
681 /* Here, the locale appears to have been changed to use the
682 * program's underlying locale. Just use our mechanisms to
683 * switch back to C. It might be possible for this pointer to
684 * actually refer to something else if it got released and
685 * reused somehow. But it doesn't matter, our mechanisms will
686 * work even so */
687 STORE_LC_NUMERIC_SET_STANDARD();
688 }
689 else if (locale_obj_on_entry != PL_C_locale_obj) {
690 /* The C object should be unchanged during a program's
691 * execution, so it should be safe to assume it means what it
692 * says, so if we are in it, no locale change is required.
693 * Otherwise, simply use the thread-safe operation. */
694 uselocale(PL_C_locale_obj);
695 }
696
697# endif
698
190ce35b
KW
699 /* Prevent recursed calls from trying to change back */
700 LOCK_LC_NUMERIC_STANDARD();
701
f57000bc 702#endif
190ce35b 703
d3a5b29c 704 if (sv) {
a6842133 705 Perl_sv_catpvf(aTHX_ sv, "%.9" NVff, SvNVX(ver));
d3a5b29c
JP
706 len = SvCUR(sv);
707 buf = SvPVX(sv);
708 }
709 else {
a6842133 710 len = my_snprintf(tbuf, sizeof(tbuf), "%.9" NVff, SvNVX(ver));
d3a5b29c
JP
711 buf = tbuf;
712 }
190ce35b
KW
713
714#ifdef USE_LOCALE_NUMERIC
715
716 UNLOCK_LC_NUMERIC_STANDARD();
717
e9bc6d6b
KW
718# ifndef USE_POSIX_2008_LOCALE
719
190ce35b
KW
720 if (locale_name_on_entry) {
721 setlocale(LC_NUMERIC, locale_name_on_entry);
bcb1da5c 722 Safefree(locale_name_on_entry);
190ce35b 723 }
49d7d366
KW
724
725 LC_NUMERIC_UNLOCK; /* End critical section */
726
e9bc6d6b
KW
727# else
728
729 if (locale_name_on_entry) {
730 setlocale(LC_NUMERIC, locale_name_on_entry);
bcb1da5c 731 Safefree(locale_name_on_entry);
e9bc6d6b
KW
732 LC_NUMERIC_UNLOCK;
733 }
734 else if (locale_obj_on_entry == PL_underlying_numeric_obj) {
735 RESTORE_LC_NUMERIC();
736 }
737 else if (locale_obj_on_entry != PL_C_locale_obj) {
738 uselocale(locale_obj_on_entry);
d3a5b29c 739 }
e9bc6d6b
KW
740
741# endif
742
f57000bc 743 }
190ce35b
KW
744
745#endif /* USE_LOCALE_NUMERIC */
746
abc6d738
FC
747 while (buf[len-1] == '0' && len > 0) len--;
748 if ( buf[len-1] == '.' ) len--; /* eat the trailing decimal */
749 version = savepvn(buf, len);
05402f6b 750 SAVEFREEPV(version);
abc6d738
FC
751 SvREFCNT_dec(sv);
752 }
753#ifdef SvVOK
754 else if ( (mg = SvVSTRING_mg(ver)) ) { /* already a v-string */
755 version = savepvn( (const char*)mg->mg_ptr,mg->mg_len );
05402f6b 756 SAVEFREEPV(version);
abc6d738
FC
757 qv = TRUE;
758 }
759#endif
9190f8ab
JP
760 else if ( SvPOK(ver))/* must be a string or something like a string */
761VER_PV:
abc6d738
FC
762 {
763 STRLEN len;
4141ef59 764 version = savepvn(SvPV(ver,len), SvCUR(ver));
05402f6b 765 SAVEFREEPV(version);
abc6d738
FC
766#ifndef SvVOK
767# if PERL_VERSION > 5
768 /* This will only be executed for 5.6.0 - 5.8.0 inclusive */
769 if ( len >= 3 && !instr(version,".") && !instr(version,"_")) {
770 /* may be a v-string */
771 char *testv = (char *)version;
772 STRLEN tlen = len;
773 for (tlen=0; tlen < len; tlen++, testv++) {
774 /* if one of the characters is non-text assume v-string */
775 if (testv[0] < ' ') {
776 SV * const nsv = sv_newmortal();
777 const char *nver;
778 const char *pos;
779 int saw_decimal = 0;
780 sv_setpvf(nsv,"v%vd",ver);
781 pos = nver = savepv(SvPV_nolen(nsv));
05402f6b 782 SAVEFREEPV(pos);
abc6d738
FC
783
784 /* scan the resulting formatted string */
785 pos++; /* skip the leading 'v' */
786 while ( *pos == '.' || isDIGIT(*pos) ) {
787 if ( *pos == '.' )
788 saw_decimal++ ;
789 pos++;
790 }
791
792 /* is definitely a v-string */
793 if ( saw_decimal >= 2 ) {
abc6d738
FC
794 version = nver;
795 }
796 break;
797 }
798 }
799 }
800# endif
801#endif
802 }
9190f8ab
JP
803#if PERL_VERSION_LT(5,17,2)
804 else if (SvIOKp(ver)) {
805 goto VER_IV;
806 }
807 else if (SvNOKp(ver)) {
808 goto VER_NV;
809 }
810 else if (SvPOKp(ver)) {
811 goto VER_PV;
812 }
813#endif
ab4e0d4b
JP
814 else
815 {
816 /* no idea what this is */
817 Perl_croak(aTHX_ "Invalid version format (non-numeric data)");
818 }
abc6d738 819
d4e59e62 820 s = SCAN_VERSION(version, ver, qv);
abc6d738
FC
821 if ( *s != '\0' )
822 Perl_ck_warner(aTHX_ packWARN(WARN_MISC),
823 "Version string '%s' contains invalid data; "
824 "ignoring: '%s'", version, s);
d2b110e6
JP
825
826#if PERL_VERSION_LT(5,19,8) && defined(USE_ITHREADS)
e2ca569e 827 LEAVE;
d2b110e6 828#endif
9190f8ab 829
abc6d738
FC
830 return ver;
831}
832
833/*
834=for apidoc vverify
835
836Validates that the SV contains valid internal structure for a version object.
837It may be passed either the version object (RV) or the hash itself (HV). If
838the structure is valid, it returns the HV. If the structure is invalid,
839it returns NULL.
840
841 SV *hv = vverify(sv);
842
843Note that it only confirms the bare minimum structure (so as not to get
844confused by derived classes which may contain additional hash entries):
845
846=over 4
847
848=item * The SV is an HV or a reference to an HV
849
850=item * The hash contains a "version" key
851
852=item * The "version" key has a reference to an AV as its value
853
854=back
855
856=cut
857*/
858
859SV *
24120986 860#ifdef VUTIL_REPLACE_CORE
d4e59e62
FC
861Perl_vverify2(pTHX_ SV *vs)
862#else
abc6d738 863Perl_vverify(pTHX_ SV *vs)
d4e59e62 864#endif
abc6d738
FC
865{
866 SV *sv;
05402f6b 867 SV **svp;
abc6d738
FC
868
869 PERL_ARGS_ASSERT_VVERIFY;
870
871 if ( SvROK(vs) )
872 vs = SvRV(vs);
873
874 /* see if the appropriate elements exist */
875 if ( SvTYPE(vs) == SVt_PVHV
05402f6b
JP
876 && (svp = hv_fetchs(MUTABLE_HV(vs), "version", FALSE))
877 && (sv = SvRV(*svp))
abc6d738
FC
878 && SvTYPE(sv) == SVt_PVAV )
879 return vs;
880 else
881 return NULL;
882}
883
884/*
885=for apidoc vnumify
886
887Accepts a version object and returns the normalized floating
888point representation. Call like:
889
890 sv = vnumify(rv);
891
892NOTE: you can pass either the object directly or the SV
893contained within the RV.
894
895The SV returned has a refcount of 1.
896
897=cut
898*/
899
900SV *
24120986 901#ifdef VUTIL_REPLACE_CORE
d4e59e62
FC
902Perl_vnumify2(pTHX_ SV *vs)
903#else
abc6d738 904Perl_vnumify(pTHX_ SV *vs)
d4e59e62 905#endif
abc6d738
FC
906{
907 SSize_t i, len;
908 I32 digit;
abc6d738
FC
909 bool alpha = FALSE;
910 SV *sv;
911 AV *av;
912
913 PERL_ARGS_ASSERT_VNUMIFY;
914
915 /* extract the HV from the object */
d4e59e62 916 vs = VVERIFY(vs);
abc6d738
FC
917 if ( ! vs )
918 Perl_croak(aTHX_ "Invalid version object");
919
920 /* see if various flags exist */
817794ed 921 if ( hv_exists(MUTABLE_HV(vs), "alpha", 5 ) )
abc6d738 922 alpha = TRUE;
abc6d738 923
14f3031b
JP
924 if (alpha) {
925 Perl_ck_warner(aTHX_ packWARN(WARN_NUMERIC),
926 "alpha->numify() is lossy");
927 }
abc6d738
FC
928
929 /* attempt to retrieve the version array */
930 if ( !(av = MUTABLE_AV(SvRV(*hv_fetchs(MUTABLE_HV(vs), "version", FALSE))) ) ) {
931 return newSVpvs("0");
932 }
933
934 len = av_len(av);
935 if ( len == -1 )
936 {
937 return newSVpvs("0");
938 }
939
05402f6b
JP
940 {
941 SV * tsv = *av_fetch(av, 0, 0);
942 digit = SvIV(tsv);
943 }
abc6d738 944 sv = Perl_newSVpvf(aTHX_ "%d.", (int)PERL_ABS(digit));
14f3031b 945 for ( i = 1 ; i <= len ; i++ )
abc6d738 946 {
05402f6b
JP
947 SV * tsv = *av_fetch(av, i, 0);
948 digit = SvIV(tsv);
14f3031b 949 Perl_sv_catpvf(aTHX_ sv, "%03d", (int)digit);
abc6d738
FC
950 }
951
14f3031b 952 if ( len == 0 ) {
abc6d738
FC
953 sv_catpvs(sv, "000");
954 }
955 return sv;
956}
957
958/*
959=for apidoc vnormal
960
961Accepts a version object and returns the normalized string
962representation. Call like:
963
964 sv = vnormal(rv);
965
966NOTE: you can pass either the object directly or the SV
967contained within the RV.
968
969The SV returned has a refcount of 1.
970
971=cut
972*/
973
974SV *
24120986 975#ifdef VUTIL_REPLACE_CORE
d4e59e62
FC
976Perl_vnormal2(pTHX_ SV *vs)
977#else
abc6d738 978Perl_vnormal(pTHX_ SV *vs)
d4e59e62 979#endif
abc6d738
FC
980{
981 I32 i, len, digit;
abc6d738
FC
982 SV *sv;
983 AV *av;
984
985 PERL_ARGS_ASSERT_VNORMAL;
986
987 /* extract the HV from the object */
d4e59e62 988 vs = VVERIFY(vs);
abc6d738
FC
989 if ( ! vs )
990 Perl_croak(aTHX_ "Invalid version object");
991
abc6d738
FC
992 av = MUTABLE_AV(SvRV(*hv_fetchs(MUTABLE_HV(vs), "version", FALSE)));
993
994 len = av_len(av);
995 if ( len == -1 )
996 {
997 return newSVpvs("");
998 }
05402f6b
JP
999 {
1000 SV * tsv = *av_fetch(av, 0, 0);
1001 digit = SvIV(tsv);
1002 }
a6842133 1003 sv = Perl_newSVpvf(aTHX_ "v%" IVdf, (IV)digit);
14f3031b 1004 for ( i = 1 ; i <= len ; i++ ) {
05402f6b
JP
1005 SV * tsv = *av_fetch(av, i, 0);
1006 digit = SvIV(tsv);
a6842133 1007 Perl_sv_catpvf(aTHX_ sv, ".%" IVdf, (IV)digit);
abc6d738
FC
1008 }
1009
abc6d738
FC
1010 if ( len <= 2 ) { /* short version, must be at least three */
1011 for ( len = 2 - len; len != 0; len-- )
1012 sv_catpvs(sv,".0");
1013 }
1014 return sv;
1015}
1016
1017/*
1018=for apidoc vstringify
1019
1020In order to maintain maximum compatibility with earlier versions
1021of Perl, this function will return either the floating point
1022notation or the multiple dotted notation, depending on whether
1023the original version contained 1 or more dots, respectively.
1024
1025The SV returned has a refcount of 1.
1026
1027=cut
1028*/
1029
1030SV *
24120986 1031#ifdef VUTIL_REPLACE_CORE
d4e59e62
FC
1032Perl_vstringify2(pTHX_ SV *vs)
1033#else
abc6d738 1034Perl_vstringify(pTHX_ SV *vs)
d4e59e62 1035#endif
abc6d738 1036{
05402f6b 1037 SV ** svp;
abc6d738
FC
1038 PERL_ARGS_ASSERT_VSTRINGIFY;
1039
1040 /* extract the HV from the object */
d4e59e62 1041 vs = VVERIFY(vs);
abc6d738
FC
1042 if ( ! vs )
1043 Perl_croak(aTHX_ "Invalid version object");
1044
05402f6b
JP
1045 svp = hv_fetchs(MUTABLE_HV(vs), "original", FALSE);
1046 if (svp) {
abc6d738 1047 SV *pv;
05402f6b 1048 pv = *svp;
dddb2275
JP
1049 if ( SvPOK(pv)
1050#if PERL_VERSION_LT(5,17,2)
1051 || SvPOKp(pv)
1052#endif
1053 )
abc6d738
FC
1054 return newSVsv(pv);
1055 else
1056 return &PL_sv_undef;
1057 }
1058 else {
817794ed 1059 if ( hv_exists(MUTABLE_HV(vs), "qv", 2) )
d4e59e62 1060 return VNORMAL(vs);
abc6d738 1061 else
d4e59e62 1062 return VNUMIFY(vs);
abc6d738
FC
1063 }
1064}
1065
1066/*
1067=for apidoc vcmp
1068
1069Version object aware cmp. Both operands must already have been
1070converted into version objects.
1071
1072=cut
1073*/
1074
1075int
24120986 1076#ifdef VUTIL_REPLACE_CORE
d4e59e62
FC
1077Perl_vcmp2(pTHX_ SV *lhv, SV *rhv)
1078#else
abc6d738 1079Perl_vcmp(pTHX_ SV *lhv, SV *rhv)
d4e59e62 1080#endif
abc6d738
FC
1081{
1082 SSize_t i,l,m,r;
1083 I32 retval;
abc6d738
FC
1084 I32 left = 0;
1085 I32 right = 0;
1086 AV *lav, *rav;
1087
1088 PERL_ARGS_ASSERT_VCMP;
1089
1090 /* extract the HVs from the objects */
d4e59e62
FC
1091 lhv = VVERIFY(lhv);
1092 rhv = VVERIFY(rhv);
abc6d738
FC
1093 if ( ! ( lhv && rhv ) )
1094 Perl_croak(aTHX_ "Invalid version object");
1095
1096 /* get the left hand term */
1097 lav = MUTABLE_AV(SvRV(*hv_fetchs(MUTABLE_HV(lhv), "version", FALSE)));
abc6d738
FC
1098
1099 /* and the right hand term */
1100 rav = MUTABLE_AV(SvRV(*hv_fetchs(MUTABLE_HV(rhv), "version", FALSE)));
abc6d738
FC
1101
1102 l = av_len(lav);
1103 r = av_len(rav);
1104 m = l < r ? l : r;
1105 retval = 0;
1106 i = 0;
1107 while ( i <= m && retval == 0 )
1108 {
05402f6b
JP
1109 SV * const lsv = *av_fetch(lav,i,0);
1110 SV * rsv;
1111 left = SvIV(lsv);
1112 rsv = *av_fetch(rav,i,0);
1113 right = SvIV(rsv);
abc6d738
FC
1114 if ( left < right )
1115 retval = -1;
1116 if ( left > right )
1117 retval = +1;
1118 i++;
1119 }
1120
abc6d738
FC
1121 if ( l != r && retval == 0 ) /* possible match except for trailing 0's */
1122 {
1123 if ( l < r )
1124 {
1125 while ( i <= r && retval == 0 )
1126 {
05402f6b
JP
1127 SV * const rsv = *av_fetch(rav,i,0);
1128 if ( SvIV(rsv) != 0 )
abc6d738
FC
1129 retval = -1; /* not a match after all */
1130 i++;
1131 }
1132 }
1133 else
1134 {
1135 while ( i <= l && retval == 0 )
1136 {
05402f6b
JP
1137 SV * const lsv = *av_fetch(lav,i,0);
1138 if ( SvIV(lsv) != 0 )
abc6d738
FC
1139 retval = +1; /* not a match after all */
1140 i++;
1141 }
1142 }
1143 }
1144 return retval;
1145}
14f3031b
JP
1146
1147/* ex: set ro: */