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