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[perl5.git] / vutil.c
CommitLineData
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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
FC
573{
574 const char *version, *s;
575#ifdef SvVOK
576 const MAGIC *mg;
577#endif
578
d2b110e6 579#if PERL_VERSION_LT(5,19,8) && defined(USE_ITHREADS)
e2ca569e 580 ENTER;
d2b110e6 581#endif
abc6d738
FC
582 PERL_ARGS_ASSERT_UPG_VERSION;
583
9190f8ab
JP
584 if ( (SvUOK(ver) && SvUVX(ver) > VERSION_MAX)
585 || (SvIOK(ver) && SvIVX(ver) > VERSION_MAX) ) {
586 /* out of bounds [unsigned] integer */
587 STRLEN len;
588 char tbuf[64];
589 len = my_snprintf(tbuf, sizeof(tbuf), "%d", VERSION_MAX);
590 version = savepvn(tbuf, len);
591 SAVEFREEPV(version);
592 Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW),
593 "Integer overflow in version %d",VERSION_MAX);
594 }
595 else if ( SvUOK(ver) || SvIOK(ver))
24120986 596#if PERL_VERSION_LT(5,17,2)
9190f8ab 597VER_IV:
24120986 598#endif
9190f8ab
JP
599 {
600 version = savesvpv(ver);
601 SAVEFREEPV(version);
602 }
603 else if (SvNOK(ver) && !( SvPOK(ver) && SvCUR(ver) == 3 ) )
24120986 604#if PERL_VERSION_LT(5,17,2)
9190f8ab 605VER_NV:
24120986 606#endif
abc6d738
FC
607 {
608 STRLEN len;
609
610 /* may get too much accuracy */
611 char tbuf[64];
612 SV *sv = SvNVX(ver) > 10e50 ? newSV(64) : 0;
613 char *buf;
14f3031b
JP
614
615#if PERL_VERSION_GE(5,19,0)
616 if (SvPOK(ver)) {
617 /* dualvar? */
618 goto VER_PV;
619 }
620#endif
f57000bc 621#ifdef USE_LOCALE_NUMERIC
190ce35b 622
d3a5b29c 623 {
190ce35b
KW
624 /* This may or may not be called from code that has switched
625 * locales without letting perl know, therefore we have to find it
626 * from first principals. See [perl #121930]. */
627
e9bc6d6b
KW
628 /* In windows, or not threaded, or not thread-safe, if it isn't C,
629 * set it to C. */
630
631# ifndef USE_POSIX_2008_LOCALE
632
190ce35b
KW
633 const char * locale_name_on_entry;
634
49d7d366
KW
635 LC_NUMERIC_LOCK(0); /* Start critical section */
636
190ce35b
KW
637 locale_name_on_entry = setlocale(LC_NUMERIC, NULL);
638 if ( strNE(locale_name_on_entry, "C")
639 && strNE(locale_name_on_entry, "POSIX"))
640 {
bcb1da5c
TC
641 /* the setlocale() call might free or overwrite the name */
642 locale_name_on_entry = savepv(locale_name_on_entry);
190ce35b
KW
643 setlocale(LC_NUMERIC, "C");
644 }
645 else { /* This value indicates to the restore code that we didn't
646 change the locale */
647 locale_name_on_entry = NULL;
648 }
49d7d366 649
e9bc6d6b
KW
650# else
651
652 const locale_t locale_obj_on_entry = uselocale((locale_t) 0);
653 const char * locale_name_on_entry = NULL;
654 DECLARATION_FOR_LC_NUMERIC_MANIPULATION;
655
656 if (locale_obj_on_entry == LC_GLOBAL_LOCALE) {
657
658 /* in the global locale, we can call system setlocale and if it
659 * isn't C, set it to C. */
660 LC_NUMERIC_LOCK(0);
661
662 locale_name_on_entry = setlocale(LC_NUMERIC, NULL);
663 if ( strNE(locale_name_on_entry, "C")
664 && strNE(locale_name_on_entry, "POSIX"))
665 {
bcb1da5c
TC
666 /* the setlocale() call might free or overwrite the name */
667 locale_name_on_entry = savepv(locale_name_on_entry);
e9bc6d6b
KW
668 setlocale(LC_NUMERIC, "C");
669 }
670 else { /* This value indicates to the restore code that we
671 didn't change the locale */
672 locale_name_on_entry = NULL;
d3a5b29c
JP
673 }
674 }
e9bc6d6b
KW
675 else if (locale_obj_on_entry == PL_underlying_numeric_obj) {
676 /* Here, the locale appears to have been changed to use the
677 * program's underlying locale. Just use our mechanisms to
678 * switch back to C. It might be possible for this pointer to
679 * actually refer to something else if it got released and
680 * reused somehow. But it doesn't matter, our mechanisms will
681 * work even so */
682 STORE_LC_NUMERIC_SET_STANDARD();
683 }
684 else if (locale_obj_on_entry != PL_C_locale_obj) {
685 /* The C object should be unchanged during a program's
686 * execution, so it should be safe to assume it means what it
687 * says, so if we are in it, no locale change is required.
688 * Otherwise, simply use the thread-safe operation. */
689 uselocale(PL_C_locale_obj);
690 }
691
692# endif
693
190ce35b
KW
694 /* Prevent recursed calls from trying to change back */
695 LOCK_LC_NUMERIC_STANDARD();
696
f57000bc 697#endif
190ce35b 698
d3a5b29c 699 if (sv) {
966a3447 700 Perl_sv_setpvf(aTHX_ sv, "%.9" NVff, SvNVX(ver));
d3a5b29c
JP
701 len = SvCUR(sv);
702 buf = SvPVX(sv);
703 }
704 else {
a6842133 705 len = my_snprintf(tbuf, sizeof(tbuf), "%.9" NVff, SvNVX(ver));
d3a5b29c
JP
706 buf = tbuf;
707 }
190ce35b
KW
708
709#ifdef USE_LOCALE_NUMERIC
710
711 UNLOCK_LC_NUMERIC_STANDARD();
712
e9bc6d6b
KW
713# ifndef USE_POSIX_2008_LOCALE
714
190ce35b
KW
715 if (locale_name_on_entry) {
716 setlocale(LC_NUMERIC, locale_name_on_entry);
bcb1da5c 717 Safefree(locale_name_on_entry);
190ce35b 718 }
49d7d366
KW
719
720 LC_NUMERIC_UNLOCK; /* End critical section */
721
e9bc6d6b
KW
722# else
723
724 if (locale_name_on_entry) {
725 setlocale(LC_NUMERIC, locale_name_on_entry);
bcb1da5c 726 Safefree(locale_name_on_entry);
e9bc6d6b
KW
727 LC_NUMERIC_UNLOCK;
728 }
729 else if (locale_obj_on_entry == PL_underlying_numeric_obj) {
730 RESTORE_LC_NUMERIC();
731 }
732 else if (locale_obj_on_entry != PL_C_locale_obj) {
733 uselocale(locale_obj_on_entry);
d3a5b29c 734 }
e9bc6d6b
KW
735
736# endif
737
f57000bc 738 }
190ce35b
KW
739
740#endif /* USE_LOCALE_NUMERIC */
741
abc6d738
FC
742 while (buf[len-1] == '0' && len > 0) len--;
743 if ( buf[len-1] == '.' ) len--; /* eat the trailing decimal */
744 version = savepvn(buf, len);
05402f6b 745 SAVEFREEPV(version);
abc6d738
FC
746 SvREFCNT_dec(sv);
747 }
748#ifdef SvVOK
749 else if ( (mg = SvVSTRING_mg(ver)) ) { /* already a v-string */
750 version = savepvn( (const char*)mg->mg_ptr,mg->mg_len );
05402f6b 751 SAVEFREEPV(version);
abc6d738
FC
752 qv = TRUE;
753 }
754#endif
9190f8ab
JP
755 else if ( SvPOK(ver))/* must be a string or something like a string */
756VER_PV:
abc6d738
FC
757 {
758 STRLEN len;
4141ef59 759 version = savepvn(SvPV(ver,len), SvCUR(ver));
05402f6b 760 SAVEFREEPV(version);
abc6d738 761#ifndef SvVOK
abc6d738
FC
762 /* This will only be executed for 5.6.0 - 5.8.0 inclusive */
763 if ( len >= 3 && !instr(version,".") && !instr(version,"_")) {
764 /* may be a v-string */
765 char *testv = (char *)version;
766 STRLEN tlen = len;
767 for (tlen=0; tlen < len; tlen++, testv++) {
768 /* if one of the characters is non-text assume v-string */
769 if (testv[0] < ' ') {
770 SV * const nsv = sv_newmortal();
771 const char *nver;
772 const char *pos;
773 int saw_decimal = 0;
774 sv_setpvf(nsv,"v%vd",ver);
775 pos = nver = savepv(SvPV_nolen(nsv));
05402f6b 776 SAVEFREEPV(pos);
abc6d738
FC
777
778 /* scan the resulting formatted string */
779 pos++; /* skip the leading 'v' */
780 while ( *pos == '.' || isDIGIT(*pos) ) {
781 if ( *pos == '.' )
782 saw_decimal++ ;
783 pos++;
784 }
785
786 /* is definitely a v-string */
787 if ( saw_decimal >= 2 ) {
abc6d738
FC
788 version = nver;
789 }
790 break;
791 }
792 }
793 }
abc6d738
FC
794#endif
795 }
9190f8ab
JP
796#if PERL_VERSION_LT(5,17,2)
797 else if (SvIOKp(ver)) {
798 goto VER_IV;
799 }
800 else if (SvNOKp(ver)) {
801 goto VER_NV;
802 }
803 else if (SvPOKp(ver)) {
804 goto VER_PV;
805 }
806#endif
ab4e0d4b
JP
807 else
808 {
809 /* no idea what this is */
810 Perl_croak(aTHX_ "Invalid version format (non-numeric data)");
811 }
abc6d738 812
d4e59e62 813 s = SCAN_VERSION(version, ver, qv);
abc6d738
FC
814 if ( *s != '\0' )
815 Perl_ck_warner(aTHX_ packWARN(WARN_MISC),
816 "Version string '%s' contains invalid data; "
817 "ignoring: '%s'", version, s);
d2b110e6
JP
818
819#if PERL_VERSION_LT(5,19,8) && defined(USE_ITHREADS)
e2ca569e 820 LEAVE;
d2b110e6 821#endif
9190f8ab 822
abc6d738
FC
823 return ver;
824}
825
826/*
827=for apidoc vverify
828
829Validates that the SV contains valid internal structure for a version object.
830It may be passed either the version object (RV) or the hash itself (HV). If
831the structure is valid, it returns the HV. If the structure is invalid,
832it returns NULL.
833
834 SV *hv = vverify(sv);
835
836Note that it only confirms the bare minimum structure (so as not to get
837confused by derived classes which may contain additional hash entries):
838
839=over 4
840
841=item * The SV is an HV or a reference to an HV
842
843=item * The hash contains a "version" key
844
845=item * The "version" key has a reference to an AV as its value
846
847=back
848
849=cut
850*/
851
852SV *
24120986 853#ifdef VUTIL_REPLACE_CORE
d4e59e62
FC
854Perl_vverify2(pTHX_ SV *vs)
855#else
abc6d738 856Perl_vverify(pTHX_ SV *vs)
d4e59e62 857#endif
abc6d738
FC
858{
859 SV *sv;
05402f6b 860 SV **svp;
abc6d738
FC
861
862 PERL_ARGS_ASSERT_VVERIFY;
863
864 if ( SvROK(vs) )
865 vs = SvRV(vs);
866
867 /* see if the appropriate elements exist */
868 if ( SvTYPE(vs) == SVt_PVHV
05402f6b
JP
869 && (svp = hv_fetchs(MUTABLE_HV(vs), "version", FALSE))
870 && (sv = SvRV(*svp))
abc6d738
FC
871 && SvTYPE(sv) == SVt_PVAV )
872 return vs;
873 else
874 return NULL;
875}
876
877/*
878=for apidoc vnumify
879
880Accepts a version object and returns the normalized floating
881point representation. Call like:
882
883 sv = vnumify(rv);
884
885NOTE: you can pass either the object directly or the SV
886contained within the RV.
887
888The SV returned has a refcount of 1.
889
890=cut
891*/
892
893SV *
24120986 894#ifdef VUTIL_REPLACE_CORE
d4e59e62
FC
895Perl_vnumify2(pTHX_ SV *vs)
896#else
abc6d738 897Perl_vnumify(pTHX_ SV *vs)
d4e59e62 898#endif
abc6d738
FC
899{
900 SSize_t i, len;
901 I32 digit;
abc6d738
FC
902 bool alpha = FALSE;
903 SV *sv;
904 AV *av;
905
906 PERL_ARGS_ASSERT_VNUMIFY;
907
908 /* extract the HV from the object */
d4e59e62 909 vs = VVERIFY(vs);
abc6d738
FC
910 if ( ! vs )
911 Perl_croak(aTHX_ "Invalid version object");
912
913 /* see if various flags exist */
817794ed 914 if ( hv_exists(MUTABLE_HV(vs), "alpha", 5 ) )
abc6d738 915 alpha = TRUE;
abc6d738 916
14f3031b
JP
917 if (alpha) {
918 Perl_ck_warner(aTHX_ packWARN(WARN_NUMERIC),
919 "alpha->numify() is lossy");
920 }
abc6d738
FC
921
922 /* attempt to retrieve the version array */
923 if ( !(av = MUTABLE_AV(SvRV(*hv_fetchs(MUTABLE_HV(vs), "version", FALSE))) ) ) {
924 return newSVpvs("0");
925 }
926
927 len = av_len(av);
928 if ( len == -1 )
929 {
930 return newSVpvs("0");
931 }
932
05402f6b
JP
933 {
934 SV * tsv = *av_fetch(av, 0, 0);
935 digit = SvIV(tsv);
936 }
abc6d738 937 sv = Perl_newSVpvf(aTHX_ "%d.", (int)PERL_ABS(digit));
14f3031b 938 for ( i = 1 ; i <= len ; i++ )
abc6d738 939 {
05402f6b
JP
940 SV * tsv = *av_fetch(av, i, 0);
941 digit = SvIV(tsv);
14f3031b 942 Perl_sv_catpvf(aTHX_ sv, "%03d", (int)digit);
abc6d738
FC
943 }
944
14f3031b 945 if ( len == 0 ) {
abc6d738
FC
946 sv_catpvs(sv, "000");
947 }
948 return sv;
949}
950
951/*
952=for apidoc vnormal
953
954Accepts a version object and returns the normalized string
955representation. Call like:
956
957 sv = vnormal(rv);
958
959NOTE: you can pass either the object directly or the SV
960contained within the RV.
961
962The SV returned has a refcount of 1.
963
964=cut
965*/
966
967SV *
24120986 968#ifdef VUTIL_REPLACE_CORE
d4e59e62
FC
969Perl_vnormal2(pTHX_ SV *vs)
970#else
abc6d738 971Perl_vnormal(pTHX_ SV *vs)
d4e59e62 972#endif
abc6d738
FC
973{
974 I32 i, len, digit;
abc6d738
FC
975 SV *sv;
976 AV *av;
977
978 PERL_ARGS_ASSERT_VNORMAL;
979
980 /* extract the HV from the object */
d4e59e62 981 vs = VVERIFY(vs);
abc6d738
FC
982 if ( ! vs )
983 Perl_croak(aTHX_ "Invalid version object");
984
abc6d738
FC
985 av = MUTABLE_AV(SvRV(*hv_fetchs(MUTABLE_HV(vs), "version", FALSE)));
986
987 len = av_len(av);
988 if ( len == -1 )
989 {
990 return newSVpvs("");
991 }
05402f6b
JP
992 {
993 SV * tsv = *av_fetch(av, 0, 0);
994 digit = SvIV(tsv);
995 }
a6842133 996 sv = Perl_newSVpvf(aTHX_ "v%" IVdf, (IV)digit);
14f3031b 997 for ( i = 1 ; i <= len ; i++ ) {
05402f6b
JP
998 SV * tsv = *av_fetch(av, i, 0);
999 digit = SvIV(tsv);
a6842133 1000 Perl_sv_catpvf(aTHX_ sv, ".%" IVdf, (IV)digit);
abc6d738
FC
1001 }
1002
abc6d738
FC
1003 if ( len <= 2 ) { /* short version, must be at least three */
1004 for ( len = 2 - len; len != 0; len-- )
1005 sv_catpvs(sv,".0");
1006 }
1007 return sv;
1008}
1009
1010/*
1011=for apidoc vstringify
1012
1013In order to maintain maximum compatibility with earlier versions
1014of Perl, this function will return either the floating point
1015notation or the multiple dotted notation, depending on whether
1016the original version contained 1 or more dots, respectively.
1017
1018The SV returned has a refcount of 1.
1019
1020=cut
1021*/
1022
1023SV *
24120986 1024#ifdef VUTIL_REPLACE_CORE
d4e59e62
FC
1025Perl_vstringify2(pTHX_ SV *vs)
1026#else
abc6d738 1027Perl_vstringify(pTHX_ SV *vs)
d4e59e62 1028#endif
abc6d738 1029{
05402f6b 1030 SV ** svp;
abc6d738
FC
1031 PERL_ARGS_ASSERT_VSTRINGIFY;
1032
1033 /* extract the HV from the object */
d4e59e62 1034 vs = VVERIFY(vs);
abc6d738
FC
1035 if ( ! vs )
1036 Perl_croak(aTHX_ "Invalid version object");
1037
05402f6b
JP
1038 svp = hv_fetchs(MUTABLE_HV(vs), "original", FALSE);
1039 if (svp) {
abc6d738 1040 SV *pv;
05402f6b 1041 pv = *svp;
dddb2275
JP
1042 if ( SvPOK(pv)
1043#if PERL_VERSION_LT(5,17,2)
1044 || SvPOKp(pv)
1045#endif
1046 )
abc6d738
FC
1047 return newSVsv(pv);
1048 else
1049 return &PL_sv_undef;
1050 }
1051 else {
817794ed 1052 if ( hv_exists(MUTABLE_HV(vs), "qv", 2) )
d4e59e62 1053 return VNORMAL(vs);
abc6d738 1054 else
d4e59e62 1055 return VNUMIFY(vs);
abc6d738
FC
1056 }
1057}
1058
1059/*
1060=for apidoc vcmp
1061
1062Version object aware cmp. Both operands must already have been
1063converted into version objects.
1064
1065=cut
1066*/
1067
1068int
24120986 1069#ifdef VUTIL_REPLACE_CORE
d4e59e62
FC
1070Perl_vcmp2(pTHX_ SV *lhv, SV *rhv)
1071#else
abc6d738 1072Perl_vcmp(pTHX_ SV *lhv, SV *rhv)
d4e59e62 1073#endif
abc6d738
FC
1074{
1075 SSize_t i,l,m,r;
1076 I32 retval;
abc6d738
FC
1077 I32 left = 0;
1078 I32 right = 0;
1079 AV *lav, *rav;
1080
1081 PERL_ARGS_ASSERT_VCMP;
1082
1083 /* extract the HVs from the objects */
d4e59e62
FC
1084 lhv = VVERIFY(lhv);
1085 rhv = VVERIFY(rhv);
abc6d738
FC
1086 if ( ! ( lhv && rhv ) )
1087 Perl_croak(aTHX_ "Invalid version object");
1088
1089 /* get the left hand term */
1090 lav = MUTABLE_AV(SvRV(*hv_fetchs(MUTABLE_HV(lhv), "version", FALSE)));
abc6d738
FC
1091
1092 /* and the right hand term */
1093 rav = MUTABLE_AV(SvRV(*hv_fetchs(MUTABLE_HV(rhv), "version", FALSE)));
abc6d738
FC
1094
1095 l = av_len(lav);
1096 r = av_len(rav);
1097 m = l < r ? l : r;
1098 retval = 0;
1099 i = 0;
1100 while ( i <= m && retval == 0 )
1101 {
05402f6b
JP
1102 SV * const lsv = *av_fetch(lav,i,0);
1103 SV * rsv;
1104 left = SvIV(lsv);
1105 rsv = *av_fetch(rav,i,0);
1106 right = SvIV(rsv);
abc6d738
FC
1107 if ( left < right )
1108 retval = -1;
1109 if ( left > right )
1110 retval = +1;
1111 i++;
1112 }
1113
abc6d738
FC
1114 if ( l != r && retval == 0 ) /* possible match except for trailing 0's */
1115 {
1116 if ( l < r )
1117 {
1118 while ( i <= r && retval == 0 )
1119 {
05402f6b
JP
1120 SV * const rsv = *av_fetch(rav,i,0);
1121 if ( SvIV(rsv) != 0 )
abc6d738
FC
1122 retval = -1; /* not a match after all */
1123 i++;
1124 }
1125 }
1126 else
1127 {
1128 while ( i <= l && retval == 0 )
1129 {
05402f6b
JP
1130 SV * const lsv = *av_fetch(lav,i,0);
1131 if ( SvIV(lsv) != 0 )
abc6d738
FC
1132 retval = +1; /* not a match after all */
1133 i++;
1134 }
1135 }
1136 }
1137 return retval;
1138}
14f3031b
JP
1139
1140/* ex: set ro: */