3 * Copyright (c) 1991-1997, Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "I wonder what the Entish is for 'yes' and 'no'," he thought.
18 /* Use an overridden DBL_DIG */
22 # define DBL_DIG OVR_DBL_DIG
24 /* The following is all to get DBL_DIG, in order to pick a nice
25 default value for printing floating point numbers in Gconvert.
35 #define DBL_DIG 15 /* A guess that works lots of places */
39 #if defined(USE_STDIO_PTR) && defined(STDIO_PTR_LVALUE) && defined(STDIO_CNT_LVALUE) && !defined(__QNX__)
43 static IV asIV _((SV* sv));
44 static UV asUV _((SV* sv));
45 static SV *more_sv _((void));
46 static XPVIV *more_xiv _((void));
47 static XPVNV *more_xnv _((void));
48 static XPV *more_xpv _((void));
49 static XRV *more_xrv _((void));
50 static XPVIV *new_xiv _((void));
51 static XPVNV *new_xnv _((void));
52 static XPV *new_xpv _((void));
53 static XRV *new_xrv _((void));
54 static void del_xiv _((XPVIV* p));
55 static void del_xnv _((XPVNV* p));
56 static void del_xpv _((XPV* p));
57 static void del_xrv _((XRV* p));
58 static void sv_mortalgrow _((void));
59 static void sv_unglob _((SV* sv));
61 typedef void (*SVFUNC) _((SV*));
67 (p) = (SV*)safemalloc(sizeof(SV)); \
80 #define REGHASH(sv,size) ((((U32)(sv)) >> 2) % (size))
82 #define REG_REPLACE(sv,a,b) \
84 void* p = sv->sv_any; \
85 I32 h = REGHASH(sv, regsize); \
87 while (registry[i] != (a)) { \
91 die("SV registry bug"); \
96 #define REG_ADD(sv) REG_REPLACE(sv,Nullsv,sv)
97 #define REG_REMOVE(sv) REG_REPLACE(sv,sv,Nullsv)
103 if (sv_count >= (regsize >> 1))
105 SV **oldreg = registry;
106 I32 oldsize = regsize;
108 regsize = regsize ? ((regsize << 2) + 1) : 2037;
109 registry = (SV**)safemalloc(regsize * sizeof(SV*));
110 memzero(registry, regsize * sizeof(SV*));
115 for (i = 0; i < oldsize; ++i) {
116 SV* oldsv = oldreg[i];
142 for (i = 0; i < regsize; ++i) {
143 SV* sv = registry[i];
150 sv_add_arena(ptr, size, flags)
155 if (!(flags & SVf_FAKE))
162 * "A time to plant, and a time to uproot what was planted..."
165 #define plant_SV(p) \
167 SvANY(p) = (void *)sv_root; \
168 SvFLAGS(p) = SVTYPEMASK; \
173 #define uproot_SV(p) \
176 sv_root = (SV*)SvANY(p); \
203 for (sva = sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
205 svend = &sva[SvREFCNT(sva)];
206 if (p >= sv && p < svend)
210 warn("Attempt to free non-arena SV: 0x%lx", (unsigned long)p);
217 #else /* ! DEBUGGING */
219 #define del_SV(p) plant_SV(p)
221 #endif /* DEBUGGING */
224 sv_add_arena(ptr, size, flags)
232 Zero(sva, size, char);
234 /* The first SV in an arena isn't an SV. */
235 SvANY(sva) = (void *) sv_arenaroot; /* ptr to next arena */
236 SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */
237 SvFLAGS(sva) = flags; /* FAKE if not to be freed */
242 svend = &sva[SvREFCNT(sva) - 1];
245 SvANY(sv) = (void *)(SV*)(sv + 1);
246 SvFLAGS(sv) = SVTYPEMASK;
250 SvFLAGS(sv) = SVTYPEMASK;
259 sv_add_arena(nice_chunk, nice_chunk_size, 0);
263 char *chunk; /* must use New here to match call to */
264 New(704,chunk,1008,char); /* Safefree() in sv_free_arenas() */
265 sv_add_arena(chunk, 1008, 0);
279 for (sva = sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
280 svend = &sva[SvREFCNT(sva)];
281 for (sv = sva + 1; sv < svend; ++sv) {
282 if (SvTYPE(sv) != SVTYPEMASK)
294 if (SvTYPE(sv) != SVTYPEMASK) {
295 /* XXX Perhaps this ought to go to Perl_debug_log, if DEBUGGING. */
296 PerlIO_printf(PerlIO_stderr(), "****\n");
304 visit(do_report_used);
313 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
314 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
320 /* XXX Might want to check arrays, etc. */
323 #ifndef DISABLE_DESTRUCTOR_KLUDGE
325 do_clean_named_objs(sv)
328 if (SvTYPE(sv) == SVt_PVGV && GvSV(sv))
329 do_clean_objs(GvSV(sv));
333 static bool in_clean_objs = FALSE;
338 in_clean_objs = TRUE;
339 #ifndef DISABLE_DESTRUCTOR_KLUDGE
340 visit(do_clean_named_objs);
342 visit(do_clean_objs);
343 in_clean_objs = FALSE;
350 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops:\n "), sv_dump(sv));)
351 SvFLAGS(sv) |= SVf_BREAK;
355 static bool in_clean_all = FALSE;
362 in_clean_all = FALSE;
371 /* Free arenas here, but be careful about fake ones. (We assume
372 contiguity of the fake ones with the corresponding real ones.) */
374 for (sva = sv_arenaroot; sva; sva = svanext) {
375 svanext = (SV*) SvANY(sva);
376 while (svanext && SvFAKE(svanext))
377 svanext = (SV*) SvANY(svanext);
380 Safefree((void *)sva);
394 * See comment in more_xiv() -- RAM.
396 xiv_root = (IV**)*xiv;
397 return (XPVIV*)((char*)xiv - sizeof(XPV));
406 IV** xiv = (IV**)((char*)(p) + sizeof(XPV));
407 *xiv = (IV *)xiv_root;
415 register IV** xivend;
416 XPV* ptr = (XPV*)safemalloc(1008);
417 ptr->xpv_pv = (char*)xiv_arenaroot; /* linked list of xiv arenas */
418 xiv_arenaroot = ptr; /* to keep Purify happy */
421 xivend = &xiv[1008 / sizeof(IV *) - 1];
422 xiv += (sizeof(XPV) - 1) / sizeof(IV *) + 1; /* fudge by size of XPV */
424 while (xiv < xivend) {
425 *xiv = (IV *)(xiv + 1);
438 xnv_root = *(double**)xnv;
439 return (XPVNV*)((char*)xnv - sizeof(XPVIV));
448 double* xnv = (double*)((char*)(p) + sizeof(XPVIV));
449 *(double**)xnv = xnv_root;
456 register double* xnv;
457 register double* xnvend;
458 xnv = (double*)safemalloc(1008);
459 xnvend = &xnv[1008 / sizeof(double) - 1];
460 xnv += (sizeof(XPVIV) - 1) / sizeof(double) + 1; /* fudge by sizeof XPVIV */
462 while (xnv < xnvend) {
463 *(double**)xnv = (double*)(xnv + 1);
476 xrv_root = (XRV*)xrv->xrv_rv;
486 p->xrv_rv = (SV*)xrv_root;
494 register XRV* xrvend;
495 xrv_root = (XRV*)safemalloc(1008);
497 xrvend = &xrv[1008 / sizeof(XRV) - 1];
498 while (xrv < xrvend) {
499 xrv->xrv_rv = (SV*)(xrv + 1);
512 xpv_root = (XPV*)xpv->xpv_pv;
522 p->xpv_pv = (char*)xpv_root;
530 register XPV* xpvend;
531 xpv_root = (XPV*)safemalloc(1008);
533 xpvend = &xpv[1008 / sizeof(XPV) - 1];
534 while (xpv < xpvend) {
535 xpv->xpv_pv = (char*)(xpv + 1);
543 #define new_XIV() (void*)safemalloc(sizeof(XPVIV))
544 #define del_XIV(p) free((char*)p)
546 #define new_XIV() (void*)new_xiv()
547 #define del_XIV(p) del_xiv(p)
551 #define new_XNV() (void*)safemalloc(sizeof(XPVNV))
552 #define del_XNV(p) free((char*)p)
554 #define new_XNV() (void*)new_xnv()
555 #define del_XNV(p) del_xnv(p)
559 #define new_XRV() (void*)safemalloc(sizeof(XRV))
560 #define del_XRV(p) free((char*)p)
562 #define new_XRV() (void*)new_xrv()
563 #define del_XRV(p) del_xrv(p)
567 #define new_XPV() (void*)safemalloc(sizeof(XPV))
568 #define del_XPV(p) free((char*)p)
570 #define new_XPV() (void*)new_xpv()
571 #define del_XPV(p) del_xpv(p)
574 #define new_XPVIV() (void*)safemalloc(sizeof(XPVIV))
575 #define del_XPVIV(p) free((char*)p)
577 #define new_XPVNV() (void*)safemalloc(sizeof(XPVNV))
578 #define del_XPVNV(p) free((char*)p)
580 #define new_XPVMG() (void*)safemalloc(sizeof(XPVMG))
581 #define del_XPVMG(p) free((char*)p)
583 #define new_XPVLV() (void*)safemalloc(sizeof(XPVLV))
584 #define del_XPVLV(p) free((char*)p)
586 #define new_XPVAV() (void*)safemalloc(sizeof(XPVAV))
587 #define del_XPVAV(p) free((char*)p)
589 #define new_XPVHV() (void*)safemalloc(sizeof(XPVHV))
590 #define del_XPVHV(p) free((char*)p)
592 #define new_XPVCV() (void*)safemalloc(sizeof(XPVCV))
593 #define del_XPVCV(p) free((char*)p)
595 #define new_XPVGV() (void*)safemalloc(sizeof(XPVGV))
596 #define del_XPVGV(p) free((char*)p)
598 #define new_XPVBM() (void*)safemalloc(sizeof(XPVBM))
599 #define del_XPVBM(p) free((char*)p)
601 #define new_XPVFM() (void*)safemalloc(sizeof(XPVFM))
602 #define del_XPVFM(p) free((char*)p)
604 #define new_XPVIO() (void*)safemalloc(sizeof(XPVIO))
605 #define del_XPVIO(p) free((char*)p)
620 if (SvTYPE(sv) == mt)
626 switch (SvTYPE(sv)) {
641 nv = (double)SvIVX(sv);
647 else if (mt < SVt_PVIV)
664 pv = (char*)SvRV(sv);
668 nv = (double)(unsigned long)pv;
684 else if (mt == SVt_NV)
695 del_XPVIV(SvANY(sv));
705 del_XPVNV(SvANY(sv));
715 del_XPVMG(SvANY(sv));
718 croak("Can't upgrade that kind of scalar");
723 croak("Can't upgrade to undef");
725 SvANY(sv) = new_XIV();
729 SvANY(sv) = new_XNV();
733 SvANY(sv) = new_XRV();
737 SvANY(sv) = new_XPV();
743 SvANY(sv) = new_XPVIV();
753 SvANY(sv) = new_XPVNV();
761 SvANY(sv) = new_XPVMG();
771 SvANY(sv) = new_XPVLV();
785 SvANY(sv) = new_XPVAV();
800 SvANY(sv) = new_XPVHV();
816 SvANY(sv) = new_XPVCV();
817 Zero(SvANY(sv), 1, XPVCV);
827 SvANY(sv) = new_XPVGV();
842 SvANY(sv) = new_XPVBM();
855 SvANY(sv) = new_XPVFM();
856 Zero(SvANY(sv), 1, XPVFM);
866 SvANY(sv) = new_XPVIO();
867 Zero(SvANY(sv), 1, XPVIO);
878 SvFLAGS(sv) &= ~SVTYPEMASK;
888 SV *t = sv_newmortal();
898 else if (sv == (SV*)0x55555555 || SvTYPE(sv) == 'U') {
902 else if (sv == &sv_undef || sv == &sv_no || sv == &sv_yes) {
903 if (sv == &sv_undef) {
904 sv_catpv(t, "SV_UNDEF");
905 if (!(SvFLAGS(sv) & (SVf_OK|SVf_OOK|SVs_OBJECT|
906 SVs_GMG|SVs_SMG|SVs_RMG)) &&
910 else if (sv == &sv_no) {
911 sv_catpv(t, "SV_NO");
912 if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
913 SVs_GMG|SVs_SMG|SVs_RMG)) &&
914 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
921 sv_catpv(t, "SV_YES");
922 if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
923 SVs_GMG|SVs_SMG|SVs_RMG)) &&
924 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
927 SvPVX(sv) && *SvPVX(sv) == '1' &&
933 else if (SvREFCNT(sv) == 0) {
939 if (SvCUR(t) + unref > 10) {
940 SvCUR(t) = unref + 3;
948 switch (SvTYPE(sv)) {
950 sv_catpv(t, "FREED");
954 sv_catpv(t, "UNDEF");
988 sv_catpvf(t, "CV(%s)", GvNAME(CvGV(sv)));
1008 sv_catpv(t, "(null)");
1010 sv_catpvf(t, "(%ld+\"%.127s\")",(long)SvIVX(sv),SvPVX(sv));
1012 sv_catpvf(t, "(\"%.127s\")",SvPVX(sv));
1014 else if (SvNOKp(sv)) {
1015 SET_NUMERIC_STANDARD();
1016 sv_catpvf(t, "(%g)",SvNVX(sv));
1018 else if (SvIOKp(sv))
1019 sv_catpvf(t, "(%ld)",(long)SvIVX(sv));
1038 char *s = SvPVX(sv);
1039 SvLEN(sv) += SvIVX(sv);
1040 SvPVX(sv) -= SvIVX(sv);
1042 Move(s, SvPVX(sv), SvCUR(sv)+1, char);
1044 SvFLAGS(sv) &= ~SVf_OOK;
1052 register I32 newlen;
1054 unsigned long newlen;
1059 #ifdef HAS_64K_LIMIT
1060 if (newlen >= 0x10000) {
1061 PerlIO_printf(Perl_debug_log, "Allocation too large: %lx\n", newlen);
1064 #endif /* HAS_64K_LIMIT */
1067 if (SvTYPE(sv) < SVt_PV) {
1068 sv_upgrade(sv, SVt_PV);
1071 else if (SvOOK(sv)) { /* pv is offset? */
1074 if (newlen > SvLEN(sv))
1075 newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */
1079 if (newlen > SvLEN(sv)) { /* need more room? */
1081 Renew(s,newlen,char);
1083 New(703,s,newlen,char);
1085 SvLEN_set(sv, newlen);
1095 if (SvTHINKFIRST(sv)) {
1096 if (SvREADONLY(sv) && curcop != &compiling)
1101 switch (SvTYPE(sv)) {
1103 sv_upgrade(sv, SVt_IV);
1106 sv_upgrade(sv, SVt_PVNV);
1110 sv_upgrade(sv, SVt_PVIV);
1124 croak("Can't coerce %s to integer in %s", sv_reftype(sv,0),
1125 op_desc[op->op_type]);
1127 (void)SvIOK_only(sv); /* validate number */
1140 sv_setnv(sv, (double)u);
1148 if (SvTHINKFIRST(sv)) {
1149 if (SvREADONLY(sv) && curcop != &compiling)
1154 switch (SvTYPE(sv)) {
1157 sv_upgrade(sv, SVt_NV);
1163 sv_upgrade(sv, SVt_PVNV);
1170 (void)SvOOK_off(sv);
1183 croak("Can't coerce %s to number in %s", sv_reftype(sv,0),
1184 op_name[op->op_type]);
1187 (void)SvNOK_only(sv); /* validate number */
1198 char *limit = tmpbuf + sizeof(tmpbuf) - 8;
1199 /* each *s can expand to 4 chars + "...\0",
1200 i.e. need room for 8 chars */
1202 for (s = SvPVX(sv); *s && d < limit; s++) {
1204 if (ch & 128 && !isPRINT_LC(ch)) {
1213 else if (ch == '\r') {
1217 else if (ch == '\f') {
1221 else if (ch == '\\') {
1225 else if (isPRINT_LC(ch))
1240 warn("Argument \"%s\" isn't numeric in %s", tmpbuf,
1241 op_name[op->op_type]);
1243 warn("Argument \"%s\" isn't numeric", tmpbuf);
1252 if (SvGMAGICAL(sv)) {
1257 if (SvNVX(sv) < 0.0)
1258 return I_V(SvNVX(sv));
1260 return (IV) U_V(SvNVX(sv));
1262 if (SvPOKp(sv) && SvLEN(sv))
1265 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1270 if (SvTHINKFIRST(sv)) {
1274 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
1275 return SvIV(tmpstr);
1276 #endif /* OVERLOAD */
1277 return (IV)SvRV(sv);
1279 if (SvREADONLY(sv)) {
1281 if (SvNVX(sv) < 0.0)
1282 return I_V(SvNVX(sv));
1284 return (IV) U_V(SvNVX(sv));
1286 if (SvPOKp(sv) && SvLEN(sv))
1293 switch (SvTYPE(sv)) {
1295 sv_upgrade(sv, SVt_IV);
1298 sv_upgrade(sv, SVt_PVIV);
1301 sv_upgrade(sv, SVt_PVNV);
1306 if (SvNVX(sv) < 0.0)
1307 SvIVX(sv) = I_V(SvNVX(sv));
1309 SvUVX(sv) = U_V(SvNVX(sv));
1311 else if (SvPOKp(sv) && SvLEN(sv)) {
1313 SvIVX(sv) = asIV(sv);
1316 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1320 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2iv(%ld)\n",
1321 (unsigned long)sv,(long)SvIVX(sv)));
1331 if (SvGMAGICAL(sv)) {
1336 return U_V(SvNVX(sv));
1337 if (SvPOKp(sv) && SvLEN(sv))
1340 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1345 if (SvTHINKFIRST(sv)) {
1349 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
1350 return SvUV(tmpstr);
1351 #endif /* OVERLOAD */
1352 return (UV)SvRV(sv);
1354 if (SvREADONLY(sv)) {
1356 return U_V(SvNVX(sv));
1358 if (SvPOKp(sv) && SvLEN(sv))
1365 switch (SvTYPE(sv)) {
1367 sv_upgrade(sv, SVt_IV);
1370 sv_upgrade(sv, SVt_PVIV);
1373 sv_upgrade(sv, SVt_PVNV);
1378 SvUVX(sv) = U_V(SvNVX(sv));
1380 else if (SvPOKp(sv) && SvLEN(sv)) {
1382 SvUVX(sv) = asUV(sv);
1385 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1389 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2uv(%lu)\n",
1390 (unsigned long)sv,SvUVX(sv)));
1400 if (SvGMAGICAL(sv)) {
1404 if (SvPOKp(sv) && SvLEN(sv)) {
1405 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1407 SET_NUMERIC_STANDARD();
1408 return atof(SvPVX(sv));
1411 return (double)SvIVX(sv);
1413 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1418 if (SvTHINKFIRST(sv)) {
1422 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)))
1423 return SvNV(tmpstr);
1424 #endif /* OVERLOAD */
1425 return (double)(unsigned long)SvRV(sv);
1427 if (SvREADONLY(sv)) {
1428 if (SvPOKp(sv) && SvLEN(sv)) {
1429 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1431 SET_NUMERIC_STANDARD();
1432 return atof(SvPVX(sv));
1435 return (double)SvIVX(sv);
1441 if (SvTYPE(sv) < SVt_NV) {
1442 if (SvTYPE(sv) == SVt_IV)
1443 sv_upgrade(sv, SVt_PVNV);
1445 sv_upgrade(sv, SVt_NV);
1446 DEBUG_c(SET_NUMERIC_STANDARD());
1447 DEBUG_c(PerlIO_printf(Perl_debug_log,
1448 "0x%lx num(%g)\n",(unsigned long)sv,SvNVX(sv)));
1450 else if (SvTYPE(sv) < SVt_PVNV)
1451 sv_upgrade(sv, SVt_PVNV);
1453 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
1455 SvNVX(sv) = (double)SvIVX(sv);
1457 else if (SvPOKp(sv) && SvLEN(sv)) {
1458 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1460 SET_NUMERIC_STANDARD();
1461 SvNVX(sv) = atof(SvPVX(sv));
1464 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1469 DEBUG_c(SET_NUMERIC_STANDARD());
1470 DEBUG_c(PerlIO_printf(Perl_debug_log,
1471 "0x%lx 2nv(%g)\n",(unsigned long)sv,SvNVX(sv)));
1479 I32 numtype = looks_like_number(sv);
1483 return atol(SvPVX(sv));
1484 if (!numtype && dowarn)
1486 SET_NUMERIC_STANDARD();
1487 d = atof(SvPVX(sv));
1498 I32 numtype = looks_like_number(sv);
1502 return strtoul(SvPVX(sv), Null(char**), 10);
1504 if (!numtype && dowarn)
1506 SET_NUMERIC_STANDARD();
1507 return U_V(atof(SvPVX(sv)));
1511 looks_like_number(sv)
1515 register char *send;
1516 register char *sbegin;
1524 else if (SvPOKp(sv))
1525 sbegin = SvPV(sv, len);
1528 send = sbegin + len;
1533 if (*s == '+' || *s == '-')
1536 /* next must be digit or '.' */
1540 } while (isDIGIT(*s));
1543 while (isDIGIT(*s)) /* optional digits after "." */
1547 else if (*s == '.') {
1549 /* no digits before '.' means we need digits after it */
1553 } while (isDIGIT(*s));
1562 * we return 1 if the number can be converted to _integer_ with atol()
1563 * and 2 if you need (int)atof().
1567 /* we can have an optional exponent part */
1568 if (*s == 'e' || *s == 'E') {
1571 if (*s == '+' || *s == '-')
1576 } while (isDIGIT(*s));
1585 if (len == 10 && memEQ(sbegin, "0 but true", 10))
1603 if (SvGMAGICAL(sv)) {
1610 (void)sprintf(tokenbuf,"%ld",(long)SvIVX(sv));
1615 SET_NUMERIC_STANDARD();
1616 Gconvert(SvNVX(sv), DBL_DIG, 0, tokenbuf);
1621 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1627 if (SvTHINKFIRST(sv)) {
1631 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)))
1632 return SvPV(tmpstr,*lp);
1633 #endif /* OVERLOAD */
1638 switch (SvTYPE(sv)) {
1647 case SVt_PVMG: s = "SCALAR"; break;
1648 case SVt_PVLV: s = "LVALUE"; break;
1649 case SVt_PVAV: s = "ARRAY"; break;
1650 case SVt_PVHV: s = "HASH"; break;
1651 case SVt_PVCV: s = "CODE"; break;
1652 case SVt_PVGV: s = "GLOB"; break;
1653 case SVt_PVFM: s = "FORMATLINE"; break;
1654 case SVt_PVIO: s = "IO"; break;
1655 default: s = "UNKNOWN"; break;
1659 sv_setpvf(tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
1662 sv_catpvf(tsv, "(0x%lx)", (unsigned long)sv);
1668 if (SvREADONLY(sv)) {
1670 SET_NUMERIC_STANDARD();
1671 Gconvert(SvNVX(sv), DBL_DIG, 0, tokenbuf);
1676 (void)sprintf(tokenbuf,"%ld",(long)SvIVX(sv));
1686 if (!SvUPGRADE(sv, SVt_PV))
1689 if (SvTYPE(sv) < SVt_PVNV)
1690 sv_upgrade(sv, SVt_PVNV);
1693 olderrno = errno; /* some Xenix systems wipe out errno here */
1695 if (SvNVX(sv) == 0.0)
1696 (void)strcpy(s,"0");
1700 SET_NUMERIC_STANDARD();
1701 Gconvert(SvNVX(sv), DBL_DIG, 0, s);
1704 #ifdef FIXNEGATIVEZERO
1705 if (*s == '-' && s[1] == '0' && !s[2])
1714 else if (SvIOKp(sv)) {
1715 U32 oldIOK = SvIOK(sv);
1716 if (SvTYPE(sv) < SVt_PVIV)
1717 sv_upgrade(sv, SVt_PVIV);
1718 olderrno = errno; /* some Xenix systems wipe out errno here */
1719 sv_setpviv(sv, SvIVX(sv));
1728 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1733 *lp = s - SvPVX(sv);
1736 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2pv(%s)\n",(unsigned long)sv,SvPVX(sv)));
1740 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
1741 /* Sneaky stuff here */
1745 tsv = newSVpv(tokenbuf, 0);
1761 len = strlen(tokenbuf);
1763 #ifdef FIXNEGATIVEZERO
1764 if (len == 2 && t[0] == '-' && t[1] == '0') {
1769 (void)SvUPGRADE(sv, SVt_PV);
1771 s = SvGROW(sv, len + 1);
1779 /* This function is only called on magical items */
1793 if (SvAMAGIC(sv) && (tmpsv = AMG_CALLun(sv,bool_)))
1794 return SvTRUE(tmpsv);
1796 #endif /* OVERLOAD */
1797 return SvRV(sv) != 0;
1801 if ((Xpv = (XPV*)SvANY(sv)) &&
1802 (*Xpv->xpv_pv > '0' ||
1804 (Xpv->xpv_cur && *Xpv->xpv_pv != '0')))
1811 return SvIVX(sv) != 0;
1814 return SvNVX(sv) != 0.0;
1821 /* Note: sv_setsv() should not be called with a source string that needs
1822 * to be reused, since it may destroy the source string if it is marked
1831 register U32 sflags;
1837 if (SvTHINKFIRST(dstr)) {
1838 if (SvREADONLY(dstr) && curcop != &compiling)
1845 stype = SvTYPE(sstr);
1846 dtype = SvTYPE(dstr);
1848 if (dtype == SVt_PVGV && (SvFLAGS(dstr) & SVf_FAKE)) {
1849 sv_unglob(dstr); /* so fake GLOB won't perpetuate */
1850 sv_setpvn(dstr, "", 0);
1851 (void)SvPOK_only(dstr);
1852 dtype = SvTYPE(dstr);
1857 #endif /* OVERLOAD */
1858 /* There's a lot of redundancy below but we're going for speed here */
1862 (void)SvOK_off(dstr);
1865 if (dtype != SVt_IV && dtype < SVt_PVIV) {
1867 sv_upgrade(dstr, SVt_IV);
1868 else if (dtype == SVt_NV)
1869 sv_upgrade(dstr, SVt_PVNV);
1871 sv_upgrade(dstr, SVt_PVIV);
1875 if (dtype != SVt_NV && dtype < SVt_PVNV) {
1877 sv_upgrade(dstr, SVt_NV);
1879 sv_upgrade(dstr, SVt_PVNV);
1884 sv_upgrade(dstr, SVt_RV);
1885 else if (dtype == SVt_PVGV &&
1886 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
1889 if (curcop->cop_stash != GvSTASH(dstr))
1890 GvIMPORTED_on(dstr);
1900 sv_upgrade(dstr, SVt_PV);
1903 if (dtype < SVt_PVIV)
1904 sv_upgrade(dstr, SVt_PVIV);
1907 if (dtype < SVt_PVNV)
1908 sv_upgrade(dstr, SVt_PVNV);
1912 sv_upgrade(dstr, SVt_PVLV);
1920 croak("Bizarre copy of %s in %s", sv_reftype(sstr, 0),
1921 op_name[op->op_type]);
1923 croak("Bizarre copy of %s", sv_reftype(sstr, 0));
1927 if (dtype <= SVt_PVGV) {
1929 if (dtype != SVt_PVGV) {
1930 char *name = GvNAME(sstr);
1931 STRLEN len = GvNAMELEN(sstr);
1932 sv_upgrade(dstr, SVt_PVGV);
1933 sv_magic(dstr, dstr, '*', name, len);
1934 GvSTASH(dstr) = GvSTASH(sstr);
1935 GvNAME(dstr) = savepvn(name, len);
1936 GvNAMELEN(dstr) = len;
1937 SvFAKE_on(dstr); /* can coerce to non-glob */
1939 /* ahem, death to those who redefine active sort subs */
1940 else if (curstack == sortstack
1941 && GvCV(dstr) && sortcop == CvSTART(GvCV(dstr)))
1942 croak("Can't redefine active sort subroutine %s",
1944 (void)SvOK_off(dstr);
1945 GvINTRO_off(dstr); /* one-shot flag */
1947 GvGP(dstr) = gp_ref(GvGP(sstr));
1949 if (curcop->cop_stash != GvSTASH(dstr))
1950 GvIMPORTED_on(dstr);
1957 if (SvGMAGICAL(sstr)) {
1959 if (SvTYPE(sstr) != stype) {
1960 stype = SvTYPE(sstr);
1961 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
1966 sv_upgrade(dstr, stype);
1969 sflags = SvFLAGS(sstr);
1971 if (sflags & SVf_ROK) {
1972 if (dtype >= SVt_PV) {
1973 if (dtype == SVt_PVGV) {
1974 SV *sref = SvREFCNT_inc(SvRV(sstr));
1976 int intro = GvINTRO(dstr);
1980 GvGP(dstr)->gp_refcnt--;
1981 GvINTRO_off(dstr); /* one-shot flag */
1982 Newz(602,gp, 1, GP);
1983 GvGP(dstr) = gp_ref(gp);
1984 GvSV(dstr) = NEWSV(72,0);
1985 GvLINE(dstr) = curcop->cop_line;
1986 GvEGV(dstr) = (GV*)dstr;
1989 switch (SvTYPE(sref)) {
1992 SAVESPTR(GvAV(dstr));
1994 dref = (SV*)GvAV(dstr);
1995 GvAV(dstr) = (AV*)sref;
1996 if (curcop->cop_stash != GvSTASH(dstr))
1997 GvIMPORTED_AV_on(dstr);
2001 SAVESPTR(GvHV(dstr));
2003 dref = (SV*)GvHV(dstr);
2004 GvHV(dstr) = (HV*)sref;
2005 if (curcop->cop_stash != GvSTASH(dstr))
2006 GvIMPORTED_HV_on(dstr);
2010 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2011 SvREFCNT_dec(GvCV(dstr));
2012 GvCV(dstr) = Nullcv;
2013 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2016 SAVESPTR(GvCV(dstr));
2019 dref = (SV*)GvCV(dstr);
2020 if (GvCV(dstr) != (CV*)sref) {
2021 CV* cv = GvCV(dstr);
2023 if (!GvCVGEN((GV*)dstr) &&
2024 (CvROOT(cv) || CvXSUB(cv)))
2026 /* ahem, death to those who redefine
2027 * active sort subs */
2028 if (curstack == sortstack &&
2029 sortcop == CvSTART(cv))
2031 "Can't redefine active sort subroutine %s",
2032 GvENAME((GV*)dstr));
2033 if (cv_const_sv(cv))
2034 warn("Constant subroutine %s redefined",
2035 GvENAME((GV*)dstr));
2037 warn("Subroutine %s redefined",
2038 GvENAME((GV*)dstr));
2040 cv_ckproto(cv, (GV*)dstr,
2041 SvPOK(sref) ? SvPVX(sref) : Nullch);
2043 GvCV(dstr) = (CV*)sref;
2044 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2045 GvASSUMECV_on(dstr);
2048 if (curcop->cop_stash != GvSTASH(dstr))
2049 GvIMPORTED_CV_on(dstr);
2053 SAVESPTR(GvIOp(dstr));
2055 dref = (SV*)GvIOp(dstr);
2056 GvIOp(dstr) = (IO*)sref;
2060 SAVESPTR(GvSV(dstr));
2062 dref = (SV*)GvSV(dstr);
2064 if (curcop->cop_stash != GvSTASH(dstr))
2065 GvIMPORTED_SV_on(dstr);
2076 (void)SvOOK_off(dstr); /* backoff */
2077 Safefree(SvPVX(dstr));
2078 SvLEN(dstr)=SvCUR(dstr)=0;
2081 (void)SvOK_off(dstr);
2082 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
2084 if (sflags & SVp_NOK) {
2086 SvNVX(dstr) = SvNVX(sstr);
2088 if (sflags & SVp_IOK) {
2089 (void)SvIOK_on(dstr);
2090 SvIVX(dstr) = SvIVX(sstr);
2093 if (SvAMAGIC(sstr)) {
2096 #endif /* OVERLOAD */
2098 else if (sflags & SVp_POK) {
2101 * Check to see if we can just swipe the string. If so, it's a
2102 * possible small lose on short strings, but a big win on long ones.
2103 * It might even be a win on short strings if SvPVX(dstr)
2104 * has to be allocated and SvPVX(sstr) has to be freed.
2107 if (SvTEMP(sstr) && /* slated for free anyway? */
2108 !(sflags & SVf_OOK)) /* and not involved in OOK hack? */
2110 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
2112 SvFLAGS(dstr) &= ~SVf_OOK;
2113 Safefree(SvPVX(dstr) - SvIVX(dstr));
2116 Safefree(SvPVX(dstr));
2118 (void)SvPOK_only(dstr);
2119 SvPV_set(dstr, SvPVX(sstr));
2120 SvLEN_set(dstr, SvLEN(sstr));
2121 SvCUR_set(dstr, SvCUR(sstr));
2123 (void)SvOK_off(sstr);
2124 SvPV_set(sstr, Nullch);
2129 else { /* have to copy actual string */
2130 STRLEN len = SvCUR(sstr);
2132 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2133 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2134 SvCUR_set(dstr, len);
2135 *SvEND(dstr) = '\0';
2136 (void)SvPOK_only(dstr);
2139 if (sflags & SVp_NOK) {
2141 SvNVX(dstr) = SvNVX(sstr);
2143 if (sflags & SVp_IOK) {
2144 (void)SvIOK_on(dstr);
2145 SvIVX(dstr) = SvIVX(sstr);
2148 else if (sflags & SVp_NOK) {
2149 SvNVX(dstr) = SvNVX(sstr);
2150 (void)SvNOK_only(dstr);
2152 (void)SvIOK_on(dstr);
2153 SvIVX(dstr) = SvIVX(sstr);
2156 else if (sflags & SVp_IOK) {
2157 (void)SvIOK_only(dstr);
2158 SvIVX(dstr) = SvIVX(sstr);
2161 (void)SvOK_off(dstr);
2167 sv_setpvn(sv,ptr,len)
2169 register const char *ptr;
2170 register STRLEN len;
2172 assert(len >= 0); /* STRLEN is probably unsigned, so this may
2173 elicit a warning, but it won't hurt. */
2174 if (SvTHINKFIRST(sv)) {
2175 if (SvREADONLY(sv) && curcop != &compiling)
2184 if (SvTYPE(sv) >= SVt_PV) {
2185 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
2188 else if (!sv_upgrade(sv, SVt_PV))
2190 SvGROW(sv, len + 1);
2191 Move(ptr,SvPVX(sv),len,char);
2194 (void)SvPOK_only(sv); /* validate pointer */
2201 register const char *ptr;
2203 register STRLEN len;
2205 if (SvTHINKFIRST(sv)) {
2206 if (SvREADONLY(sv) && curcop != &compiling)
2216 if (SvTYPE(sv) >= SVt_PV) {
2217 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
2220 else if (!sv_upgrade(sv, SVt_PV))
2222 SvGROW(sv, len + 1);
2223 Move(ptr,SvPVX(sv),len+1,char);
2225 (void)SvPOK_only(sv); /* validate pointer */
2230 sv_usepvn(sv,ptr,len)
2233 register STRLEN len;
2235 if (SvTHINKFIRST(sv)) {
2236 if (SvREADONLY(sv) && curcop != &compiling)
2241 if (!SvUPGRADE(sv, SVt_PV))
2248 Safefree(SvPVX(sv));
2249 Renew(ptr, len+1, char);
2252 SvLEN_set(sv, len+1);
2254 (void)SvPOK_only(sv); /* validate pointer */
2259 sv_chop(sv,ptr) /* like set but assuming ptr is in sv */
2263 register STRLEN delta;
2265 if (!ptr || !SvPOKp(sv))
2267 if (SvTHINKFIRST(sv)) {
2268 if (SvREADONLY(sv) && curcop != &compiling)
2273 if (SvTYPE(sv) < SVt_PVIV)
2274 sv_upgrade(sv,SVt_PVIV);
2278 SvFLAGS(sv) |= SVf_OOK;
2280 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK);
2281 delta = ptr - SvPVX(sv);
2289 sv_catpvn(sv,ptr,len)
2292 register STRLEN len;
2297 junk = SvPV_force(sv, tlen);
2298 SvGROW(sv, tlen + len + 1);
2301 Move(ptr,SvPVX(sv)+tlen,len,char);
2304 (void)SvPOK_only(sv); /* validate pointer */
2317 if (s = SvPV(sstr, len))
2318 sv_catpvn(dstr,s,len);
2326 register STRLEN len;
2332 junk = SvPV_force(sv, tlen);
2334 SvGROW(sv, tlen + len + 1);
2337 Move(ptr,SvPVX(sv)+tlen,len+1,char);
2339 (void)SvPOK_only(sv); /* validate pointer */
2359 sv_upgrade(sv, SVt_PV);
2360 SvGROW(sv, len + 1);
2365 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
2368 sv_magic(sv, obj, how, name, namlen)
2377 if (SvREADONLY(sv) && curcop != &compiling && !strchr("gBf", how))
2379 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
2380 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
2387 if (!SvUPGRADE(sv, SVt_PVMG))
2390 Newz(702,mg, 1, MAGIC);
2391 mg->mg_moremagic = SvMAGIC(sv);
2394 if (!obj || obj == sv || how == '#')
2397 mg->mg_obj = SvREFCNT_inc(obj);
2398 mg->mg_flags |= MGf_REFCOUNTED;
2401 mg->mg_len = namlen;
2404 mg->mg_ptr = savepvn(name, namlen);
2405 else if (namlen == HEf_SVKEY)
2406 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
2410 mg->mg_virtual = &vtbl_sv;
2414 mg->mg_virtual = &vtbl_amagic;
2417 mg->mg_virtual = &vtbl_amagicelem;
2422 #endif /* OVERLOAD */
2424 mg->mg_virtual = &vtbl_bm;
2427 mg->mg_virtual = &vtbl_env;
2430 mg->mg_virtual = &vtbl_fm;
2433 mg->mg_virtual = &vtbl_envelem;
2436 mg->mg_virtual = &vtbl_mglob;
2439 mg->mg_virtual = &vtbl_isa;
2442 mg->mg_virtual = &vtbl_isaelem;
2445 mg->mg_virtual = &vtbl_nkeys;
2452 mg->mg_virtual = &vtbl_dbline;
2454 #ifdef USE_LOCALE_COLLATE
2456 mg->mg_virtual = &vtbl_collxfrm;
2458 #endif /* USE_LOCALE_COLLATE */
2460 mg->mg_virtual = &vtbl_pack;
2464 mg->mg_virtual = &vtbl_packelem;
2467 mg->mg_virtual = &vtbl_sig;
2470 mg->mg_virtual = &vtbl_sigelem;
2473 mg->mg_virtual = &vtbl_taint;
2477 mg->mg_virtual = &vtbl_uvar;
2480 mg->mg_virtual = &vtbl_vec;
2483 mg->mg_virtual = &vtbl_substr;
2486 mg->mg_virtual = &vtbl_defelem;
2489 mg->mg_virtual = &vtbl_glob;
2492 mg->mg_virtual = &vtbl_arylen;
2495 mg->mg_virtual = &vtbl_pos;
2497 case '~': /* Reserved for use by extensions not perl internals. */
2498 /* Useful for attaching extension internal data to perl vars. */
2499 /* Note that multiple extensions may clash if magical scalars */
2500 /* etc holding private data from one are passed to another. */
2504 croak("Don't know how to handle magic of type '%c'", how);
2508 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
2512 sv_unmagic(sv, type)
2518 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
2521 for (mg = *mgp; mg; mg = *mgp) {
2522 if (mg->mg_type == type) {
2523 MGVTBL* vtbl = mg->mg_virtual;
2524 *mgp = mg->mg_moremagic;
2525 if (vtbl && vtbl->svt_free)
2526 (*vtbl->svt_free)(sv, mg);
2527 if (mg->mg_ptr && mg->mg_type != 'g')
2528 if (mg->mg_len >= 0)
2529 Safefree(mg->mg_ptr);
2530 else if (mg->mg_len == HEf_SVKEY)
2531 SvREFCNT_dec((SV*)mg->mg_ptr);
2532 if (mg->mg_flags & MGf_REFCOUNTED)
2533 SvREFCNT_dec(mg->mg_obj);
2537 mgp = &mg->mg_moremagic;
2541 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
2548 sv_insert(bigstr,offset,len,little,littlelen)
2557 register char *midend;
2558 register char *bigend;
2562 croak("Can't modify non-existent substring");
2563 SvPV_force(bigstr, na);
2565 i = littlelen - len;
2566 if (i > 0) { /* string might grow */
2567 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
2568 mid = big + offset + len;
2569 midend = bigend = big + SvCUR(bigstr);
2572 while (midend > mid) /* shove everything down */
2573 *--bigend = *--midend;
2574 Move(little,big+offset,littlelen,char);
2580 Move(little,SvPVX(bigstr)+offset,len,char);
2585 big = SvPVX(bigstr);
2588 bigend = big + SvCUR(bigstr);
2590 if (midend > bigend)
2591 croak("panic: sv_insert");
2593 if (mid - big > bigend - midend) { /* faster to shorten from end */
2595 Move(little, mid, littlelen,char);
2598 i = bigend - midend;
2600 Move(midend, mid, i,char);
2604 SvCUR_set(bigstr, mid - big);
2607 else if (i = mid - big) { /* faster from front */
2608 midend -= littlelen;
2610 sv_chop(bigstr,midend-i);
2615 Move(little, mid, littlelen,char);
2617 else if (littlelen) {
2618 midend -= littlelen;
2619 sv_chop(bigstr,midend);
2620 Move(little,midend,littlelen,char);
2623 sv_chop(bigstr,midend);
2628 /* make sv point to what nstr did */
2635 U32 refcnt = SvREFCNT(sv);
2636 if (SvTHINKFIRST(sv)) {
2637 if (SvREADONLY(sv) && curcop != &compiling)
2642 if (SvREFCNT(nsv) != 1)
2643 warn("Reference miscount in sv_replace()");
2644 if (SvMAGICAL(sv)) {
2648 sv_upgrade(nsv, SVt_PVMG);
2649 SvMAGIC(nsv) = SvMAGIC(sv);
2650 SvFLAGS(nsv) |= SvMAGICAL(sv);
2656 assert(!SvREFCNT(sv));
2657 StructCopy(nsv,sv,SV);
2658 SvREFCNT(sv) = refcnt;
2659 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
2668 assert(SvREFCNT(sv) == 0);
2671 if (defstash) { /* Still have a symbol table? */
2676 SAVEFREESV(SvSTASH(sv));
2678 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
2683 sv_upgrade(&ref, SVt_RV);
2684 SvRV(&ref) = SvREFCNT_inc(sv);
2686 SvREFCNT(&ref) = 1; /* Fake, but otherwise
2687 creating+destructing a ref
2688 leads to disaster. */
2694 perl_call_sv((SV*)GvCV(destructor),
2695 G_DISCARD|G_EVAL|G_KEEPERR);
2696 del_XRV(SvANY(&ref));
2703 SvREFCNT_dec(SvSTASH(sv));
2705 SvOBJECT_off(sv); /* Curse the object. */
2706 if (SvTYPE(sv) != SVt_PVIO)
2707 --sv_objcount; /* XXX Might want something more general */
2711 croak("DESTROY created new reference to dead object");
2712 /* DESTROY gave object new lease on life */
2716 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
2718 switch (SvTYPE(sv)) {
2720 if (IoIFP(sv) != PerlIO_stdin() &&
2721 IoIFP(sv) != PerlIO_stdout() &&
2722 IoIFP(sv) != PerlIO_stderr())
2724 Safefree(IoTOP_NAME(sv));
2725 Safefree(IoFMT_NAME(sv));
2726 Safefree(IoBOTTOM_NAME(sv));
2742 Safefree(GvNAME(sv));
2749 (void)SvOOK_off(sv);
2754 SvREFCNT_dec(SvRV(sv));
2755 else if (SvPVX(sv) && SvLEN(sv))
2756 Safefree(SvPVX(sv));
2766 switch (SvTYPE(sv)) {
2782 del_XPVIV(SvANY(sv));
2785 del_XPVNV(SvANY(sv));
2788 del_XPVMG(SvANY(sv));
2791 del_XPVLV(SvANY(sv));
2794 del_XPVAV(SvANY(sv));
2797 del_XPVHV(SvANY(sv));
2800 del_XPVCV(SvANY(sv));
2803 del_XPVGV(SvANY(sv));
2806 del_XPVBM(SvANY(sv));
2809 del_XPVFM(SvANY(sv));
2812 del_XPVIO(SvANY(sv));
2815 SvFLAGS(sv) &= SVf_BREAK;
2816 SvFLAGS(sv) |= SVTYPEMASK;
2834 if (SvREADONLY(sv)) {
2835 if (sv == &sv_undef || sv == &sv_yes || sv == &sv_no)
2838 if (SvREFCNT(sv) == 0) {
2839 if (SvFLAGS(sv) & SVf_BREAK)
2841 if (in_clean_all) /* All is fair */
2843 warn("Attempt to free unreferenced scalar");
2846 if (--SvREFCNT(sv) > 0)
2850 warn("Attempt to free temp prematurely");
2872 junk = SvPV(sv, len);
2891 pv1 = SvPV(str1, cur1);
2896 pv2 = SvPV(str2, cur2);
2901 return memEQ(pv1, pv2, cur1);
2910 char *pv1 = str1 ? SvPV(str1, cur1) : NULL;
2912 char *pv2 = str2 ? SvPV(str2, cur2) : NULL;
2916 return cur2 ? -1 : 0;
2921 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
2924 return retval < 0 ? -1 : 1;
2929 return cur1 < cur2 ? -1 : 1;
2933 sv_cmp_locale(sv1, sv2)
2937 #ifdef USE_LOCALE_COLLATE
2943 if (collation_standard)
2947 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : NULL;
2949 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : NULL;
2951 if (!pv1 || !len1) {
2962 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
2965 return retval < 0 ? -1 : 1;
2968 * When the result of collation is equality, that doesn't mean
2969 * that there are no differences -- some locales exclude some
2970 * characters from consideration. So to avoid false equalities,
2971 * we use the raw string as a tiebreaker.
2977 #endif /* USE_LOCALE_COLLATE */
2979 return sv_cmp(sv1, sv2);
2982 #ifdef USE_LOCALE_COLLATE
2984 * Any scalar variable may carry an 'o' magic that contains the
2985 * scalar data of the variable transformed to such a format that
2986 * a normal memory comparison can be used to compare the data
2987 * according to the locale settings.
2990 sv_collxfrm(sv, nxp)
2996 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : NULL;
2997 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != collation_ix) {
3002 Safefree(mg->mg_ptr);
3004 if ((xf = mem_collxfrm(s, len, &xlen))) {
3005 if (SvREADONLY(sv)) {
3011 sv_magic(sv, 0, 'o', 0, 0);
3012 mg = mg_find(sv, 'o');
3025 if (mg && mg->mg_ptr) {
3027 return mg->mg_ptr + sizeof(collation_ix);
3035 #endif /* USE_LOCALE_COLLATE */
3038 sv_gets(sv,fp,append)
3040 register PerlIO *fp;
3045 register STDCHAR rslast;
3046 register STDCHAR *bp;
3050 if (SvTHINKFIRST(sv)) {
3051 if (SvREADONLY(sv) && curcop != &compiling)
3056 if (!SvUPGRADE(sv, SVt_PV))
3064 else if (RsPARA(rs)) {
3069 rsptr = SvPV(rs, rslen);
3070 rslast = rslen ? rsptr[rslen - 1] : '\0';
3072 if (RsPARA(rs)) { /* have to do this both before and after */
3073 do { /* to make sure file boundaries work right */
3076 i = PerlIO_getc(fp);
3080 PerlIO_ungetc(fp,i);
3086 /* See if we know enough about I/O mechanism to cheat it ! */
3088 /* This used to be #ifdef test - it is made run-time test for ease
3089 of abstracting out stdio interface. One call should be cheap
3090 enough here - and may even be a macro allowing compile
3094 if (PerlIO_fast_gets(fp)) {
3097 * We're going to steal some values from the stdio struct
3098 * and put EVERYTHING in the innermost loop into registers.
3100 register STDCHAR *ptr;
3104 #if defined(VMS) && defined(PERLIO_IS_STDIO)
3105 /* An ungetc()d char is handled separately from the regular
3106 * buffer, so we getc() it back out and stuff it in the buffer.
3108 i = PerlIO_getc(fp);
3109 if (i == EOF) return 0;
3110 *(--((*fp)->_ptr)) = (unsigned char) i;
3114 /* Here is some breathtakingly efficient cheating */
3116 cnt = PerlIO_get_cnt(fp); /* get count into register */
3117 (void)SvPOK_only(sv); /* validate pointer */
3118 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
3119 if (cnt > 80 && SvLEN(sv) > append) {
3120 shortbuffered = cnt - SvLEN(sv) + append + 1;
3121 cnt -= shortbuffered;
3125 /* remember that cnt can be negative */
3126 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
3131 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
3132 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
3133 DEBUG_P(PerlIO_printf(Perl_debug_log,
3134 "Screamer: entering, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt));
3135 DEBUG_P(PerlIO_printf(Perl_debug_log,
3136 "Screamer: entering: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n",
3137 (long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp),
3138 (long)(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
3143 while (cnt > 0) { /* this | eat */
3145 if ((*bp++ = *ptr++) == rslast) /* really | dust */
3146 goto thats_all_folks; /* screams | sed :-) */
3150 Copy(ptr, bp, cnt, char); /* this | eat */
3151 bp += cnt; /* screams | dust */
3152 ptr += cnt; /* louder | sed :-) */
3157 if (shortbuffered) { /* oh well, must extend */
3158 cnt = shortbuffered;
3160 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
3162 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
3163 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
3167 DEBUG_P(PerlIO_printf(Perl_debug_log,
3168 "Screamer: going to getc, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt));
3169 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
3170 DEBUG_P(PerlIO_printf(Perl_debug_log,
3171 "Screamer: pre: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n",
3172 (long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp),
3173 (long)(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
3174 /* This used to call 'filbuf' in stdio form, but as that behaves like
3175 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
3176 another abstraction. */
3177 i = PerlIO_getc(fp); /* get more characters */
3178 DEBUG_P(PerlIO_printf(Perl_debug_log,
3179 "Screamer: post: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n",
3180 (long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp),
3181 (long)(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
3182 cnt = PerlIO_get_cnt(fp);
3183 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
3184 DEBUG_P(PerlIO_printf(Perl_debug_log,
3185 "Screamer: after getc, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt));
3187 if (i == EOF) /* all done for ever? */
3188 goto thats_really_all_folks;
3190 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
3192 SvGROW(sv, bpx + cnt + 2);
3193 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
3195 *bp++ = i; /* store character from PerlIO_getc */
3197 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
3198 goto thats_all_folks;
3202 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
3203 memNE((char*)bp - rslen, rsptr, rslen))
3204 goto screamer; /* go back to the fray */
3205 thats_really_all_folks:
3207 cnt += shortbuffered;
3208 DEBUG_P(PerlIO_printf(Perl_debug_log,
3209 "Screamer: quitting, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt));
3210 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
3211 DEBUG_P(PerlIO_printf(Perl_debug_log,
3212 "Screamer: end: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n",
3213 (long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp),
3214 (long)(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
3216 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
3217 DEBUG_P(PerlIO_printf(Perl_debug_log,
3218 "Screamer: done, len=%d, string=|%.*s|\n",
3219 SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
3223 /*The big, slow, and stupid way */
3228 register STDCHAR *bpe = buf + sizeof(buf);
3230 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
3231 ; /* keep reading */
3235 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
3236 /* Accomodate broken VAXC compiler, which applies U8 cast to
3237 * both args of ?: operator, causing EOF to change into 255
3239 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
3243 sv_catpvn(sv, (char *) buf, cnt);
3245 sv_setpvn(sv, (char *) buf, cnt);
3247 if (i != EOF && /* joy */
3249 SvCUR(sv) < rslen ||
3250 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
3254 * If we're reading from a TTY and we get a short read,
3255 * indicating that the user hit his EOF character, we need
3256 * to notice it now, because if we try to read from the TTY
3257 * again, the EOF condition will disappear.
3259 * The comparison of cnt to sizeof(buf) is an optimization
3260 * that prevents unnecessary calls to feof().
3264 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
3269 if (RsPARA(rs)) { /* have to do this both before and after */
3270 while (i != EOF) { /* to make sure file boundaries work right */
3271 i = PerlIO_getc(fp);
3273 PerlIO_ungetc(fp,i);
3279 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
3292 if (SvTHINKFIRST(sv)) {
3293 if (SvREADONLY(sv) && curcop != &compiling)
3297 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) return;
3298 #endif /* OVERLOAD */
3304 flags = SvFLAGS(sv);
3305 if (flags & SVp_NOK) {
3306 (void)SvNOK_only(sv);
3310 if (flags & SVp_IOK) {
3311 if (SvIVX(sv) == IV_MAX)
3312 sv_setnv(sv, (double)IV_MAX + 1.0);
3314 (void)SvIOK_only(sv);
3319 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
3320 if ((flags & SVTYPEMASK) < SVt_PVNV)
3321 sv_upgrade(sv, SVt_NV);
3323 (void)SvNOK_only(sv);
3327 while (isALPHA(*d)) d++;
3328 while (isDIGIT(*d)) d++;
3330 SET_NUMERIC_STANDARD();
3331 sv_setnv(sv,atof(SvPVX(sv)) + 1.0); /* punt */
3335 while (d >= SvPVX(sv)) {
3345 *(d--) -= 'z' - 'a' + 1;
3348 /* oh,oh, the number grew */
3349 SvGROW(sv, SvCUR(sv) + 2);
3351 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
3367 if (SvTHINKFIRST(sv)) {
3368 if (SvREADONLY(sv) && curcop != &compiling)
3372 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) return;
3373 #endif /* OVERLOAD */
3379 flags = SvFLAGS(sv);
3380 if (flags & SVp_NOK) {
3382 (void)SvNOK_only(sv);
3385 if (flags & SVp_IOK) {
3386 if (SvIVX(sv) == IV_MIN)
3387 sv_setnv(sv, (double)IV_MIN - 1.0);
3389 (void)SvIOK_only(sv);
3394 if (!(flags & SVp_POK)) {
3395 if ((flags & SVTYPEMASK) < SVt_PVNV)
3396 sv_upgrade(sv, SVt_NV);
3398 (void)SvNOK_only(sv);
3401 SET_NUMERIC_STANDARD();
3402 sv_setnv(sv,atof(SvPVX(sv)) - 1.0); /* punt */
3405 /* Make a string that will exist for the duration of the expression
3406 * evaluation. Actually, it may have to last longer than that, but
3407 * hopefully we won't free it until it has been assigned to a
3408 * permanent location. */
3413 tmps_max += (tmps_max < 512) ? 128 : 512;
3414 Renew(tmps_stack, tmps_max, SV*);
3418 sv_mortalcopy(oldstr)
3427 sv_setsv(sv,oldstr);
3428 if (++tmps_ix >= tmps_max)
3430 tmps_stack[tmps_ix] = sv;
3443 SvFLAGS(sv) = SVs_TEMP;
3444 if (++tmps_ix >= tmps_max)
3446 tmps_stack[tmps_ix] = sv;
3450 /* same thing without the copying */
3458 if (SvREADONLY(sv) && curcop != &compiling)
3460 if (++tmps_ix >= tmps_max)
3462 tmps_stack[tmps_ix] = sv;
3480 sv_setpvn(sv,s,len);
3486 newSVpvf(const char* pat, ...)
3490 newSVpvf(pat, va_alist)
3503 va_start(args, pat);
3507 sv_vsetpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
3551 sv_upgrade(sv, SVt_RV);
3553 SvRV(sv) = SvREFCNT_inc(ref);
3569 #endif /* CRIPPLED_CC */
3571 /* make an exact duplicate of old */
3581 if (SvTYPE(old) == SVTYPEMASK) {
3582 warn("semi-panic: attempt to dup freed string");
3612 if (!*s) { /* reset ?? searches */
3613 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
3614 pm->op_pmflags &= ~PMf_USED;
3619 /* reset variables */
3621 if (!HvARRAY(stash))
3624 Zero(todo, 256, char);
3631 for ( ; i <= max; i++) {
3634 for (i = 0; i <= (I32) HvMAX(stash); i++) {
3635 for (entry = HvARRAY(stash)[i];
3637 entry = HeNEXT(entry)) {
3638 if (!todo[(U8)*HeKEY(entry)])
3640 gv = (GV*)HeVAL(entry);
3643 if (SvTYPE(sv) >= SVt_PV) {
3645 if (SvPVX(sv) != Nullch)
3652 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
3654 #ifndef VMS /* VMS has no environ array */
3656 environ[0] = Nullch;
3671 switch (SvTYPE(sv)) {
3679 croak("Bad filehandle: %s", GvNAME(gv));
3683 croak(no_usym, "filehandle");
3685 return sv_2io(SvRV(sv));
3686 gv = gv_fetchpv(SvPV(sv,na), FALSE, SVt_PVIO);
3692 croak("Bad filehandle: %s", SvPV(sv,na));
3699 sv_2cv(sv, st, gvp, lref)
3709 return *gvp = Nullgv, Nullcv;
3710 switch (SvTYPE(sv)) {
3730 if (SvTYPE(cv) != SVt_PVCV)
3731 croak("Not a subroutine reference");
3739 gv = gv_fetchpv(SvPV(sv, na), lref, SVt_PVCV);
3745 if (lref && !GvCVu(gv)) {
3748 tmpsv = NEWSV(704,0);
3749 gv_efullname3(tmpsv, gv, Nullch);
3750 newSUB(start_subparse(FALSE, 0),
3751 newSVOP(OP_CONST, 0, tmpsv),
3756 croak("Unable to create sub named \"%s\"", SvPV(sv,na));
3773 if ((Xpv = (XPV*)SvANY(sv)) &&
3774 (*Xpv->xpv_pv > '0' ||
3776 (Xpv->xpv_cur && *Xpv->xpv_pv != '0')))
3783 return SvIVX(sv) != 0;
3786 return SvNVX(sv) != 0.0;
3788 return sv_2bool(sv);
3792 #endif /* !SvTRUE */
3837 return sv_2pv(sv, lp);
3842 sv_pvn_force(sv, lp)
3848 if (SvREADONLY(sv) && curcop != &compiling)
3855 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
3856 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) {
3862 croak("Can't coerce %s to string in %s", sv_reftype(sv,0),
3863 op_name[op->op_type]);
3867 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
3872 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
3873 SvGROW(sv, len + 1);
3874 Move(s,SvPVX(sv),len,char);
3879 SvPOK_on(sv); /* validate pointer */
3881 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2pv(%s)\n",
3882 (unsigned long)sv,SvPVX(sv)));
3893 if (ob && SvOBJECT(sv))
3894 return HvNAME(SvSTASH(sv));
3896 switch (SvTYPE(sv)) {
3910 case SVt_PVLV: return "LVALUE";
3911 case SVt_PVAV: return "ARRAY";
3912 case SVt_PVHV: return "HASH";
3913 case SVt_PVCV: return "CODE";
3914 case SVt_PVGV: return "GLOB";
3915 case SVt_PVFM: return "FORMLINE";
3916 default: return "UNKNOWN";
3952 return strEQ(HvNAME(SvSTASH(sv)), name);
3956 newSVrv(rv, classname)
3966 sv_upgrade(rv, SVt_RV);
3967 SvRV(rv) = SvREFCNT_inc(sv);
3971 HV* stash = gv_stashpv(classname, TRUE);
3972 (void)sv_bless(rv, stash);
3978 sv_setref_pv(rv, classname, pv)
3984 sv_setsv(rv, &sv_undef);
3986 sv_setiv(newSVrv(rv,classname), (IV)pv);
3991 sv_setref_iv(rv, classname, iv)
3996 sv_setiv(newSVrv(rv,classname), iv);
4001 sv_setref_nv(rv, classname, nv)
4006 sv_setnv(newSVrv(rv,classname), nv);
4011 sv_setref_pvn(rv, classname, pv, n)
4017 sv_setpvn(newSVrv(rv,classname), pv, n);
4028 croak("Can't bless non-reference value");
4030 if (SvFLAGS(ref) & (SVs_OBJECT|SVf_READONLY)) {
4031 if (SvREADONLY(ref))
4033 if (SvOBJECT(ref)) {
4034 if (SvTYPE(ref) != SVt_PVIO)
4036 SvREFCNT_dec(SvSTASH(ref));
4040 if (SvTYPE(ref) != SVt_PVIO)
4042 (void)SvUPGRADE(ref, SVt_PVMG);
4043 SvSTASH(ref) = (HV*)SvREFCNT_inc(stash);
4050 #endif /* OVERLOAD */
4059 assert(SvTYPE(sv) == SVt_PVGV);
4063 sv_unmagic(sv, '*');
4064 Safefree(GvNAME(sv));
4066 SvFLAGS(sv) &= ~SVTYPEMASK;
4067 SvFLAGS(sv) |= SVt_PVMG;
4078 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
4081 sv_2mortal(rv); /* Schedule for freeing later */
4088 sv_magic((sv), Nullsv, 't', Nullch, 0);
4095 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
4096 MAGIC *mg = mg_find(sv, 't');
4106 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
4107 MAGIC *mg = mg_find(sv, 't');
4108 if (mg && ((mg->mg_len & 1) || (mg->mg_len & 2) && mg->mg_obj == sv))
4120 char buf[TYPE_DIGITS(UV)];
4121 char *ptr = buf + sizeof(buf);
4127 sv_setpvn(sv, "", 0);
4136 *--ptr = '0' + (uv % 10);
4138 len = (buf + sizeof(buf)) - ptr;
4139 /* taking advantage of SvCUR(sv) == 0 */
4140 SvGROW(sv, sign + len + 1);
4144 memcpy(p, ptr, len);
4147 SvCUR(sv) = p - SvPVX(sv);
4152 sv_setpvf(SV *sv, const char* pat, ...)
4156 sv_setpvf(sv, pat, va_alist)
4164 va_start(args, pat);
4168 sv_vsetpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
4174 sv_catpvf(SV *sv, const char* pat, ...)
4178 sv_catpvf(sv, pat, va_alist)
4186 va_start(args, pat);
4190 sv_vcatpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
4195 sv_vsetpvfn(sv, pat, patlen, args, svargs, svmax, used_locale)
4204 sv_setpvn(sv, "", 0);
4205 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, used_locale);
4209 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, used_locale)
4223 static char nullstr[] = "(null)";
4225 /* no matter what, this is a string now */
4226 (void)SvPV_force(sv, origlen);
4228 /* special-case "", "%s", and "%_" */
4231 if (patlen == 2 && pat[0] == '%') {
4235 char *s = va_arg(*args, char*);
4236 sv_catpv(sv, s ? s : nullstr);
4238 else if (svix < svmax)
4239 sv_catsv(sv, *svargs);
4243 sv_catsv(sv, va_arg(*args, SV*));
4246 /* See comment on '_' below */
4251 patend = (char*)pat + patlen;
4252 for (p = (char*)pat; p < patend; p = q) {
4260 bool has_precis = FALSE;
4264 STRLEN esignlen = 0;
4266 char *eptr = Nullch;
4268 char ebuf[TYPE_DIGITS(int) * 2 + 16]; /* large enough for "%#.#f" */
4270 static char *efloatbuf = Nullch;
4271 static STRLEN efloatsize = 0;
4283 for (q = p; q < patend && *q != '%'; ++q) ;
4285 sv_catpvn(sv, p, q - p);
4323 case '1': case '2': case '3':
4324 case '4': case '5': case '6':
4325 case '7': case '8': case '9':
4328 width = width * 10 + (*q++ - '0');
4333 i = va_arg(*args, int);
4335 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
4337 width = (i < 0) ? -i : i;
4348 i = va_arg(*args, int);
4350 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
4351 precis = (i < 0) ? 0 : i;
4357 precis = precis * 10 + (*q++ - '0');
4366 #if 0 /* when quads have better support within Perl */
4367 if (*(q + 1) == 'l') {
4393 c = va_arg(*args, int);
4395 c = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
4402 eptr = va_arg(*args, char*);
4404 elen = strlen(eptr);
4407 elen = sizeof nullstr - 1;
4410 else if (svix < svmax)
4411 eptr = SvPVx(svargs[svix++], elen);
4416 * The "%_" hack might have to be changed someday,
4417 * if ISO or ANSI decide to use '_' for something.
4418 * So we keep it hidden from users' code.
4422 eptr = SvPVx(va_arg(*args, SV*), elen);
4425 if (has_precis && elen > precis)
4433 uv = (UV)va_arg(*args, void*);
4435 uv = (svix < svmax) ? (UV)svargs[svix++] : 0;
4446 case 'h': iv = (short)va_arg(*args, int); break;
4447 default: iv = va_arg(*args, int); break;
4448 case 'l': iv = va_arg(*args, long); break;
4449 case 'V': iv = va_arg(*args, IV); break;
4453 iv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
4455 case 'h': iv = (short)iv; break;
4456 default: iv = (int)iv; break;
4457 case 'l': iv = (long)iv; break;
4464 esignbuf[esignlen++] = plus;
4468 esignbuf[esignlen++] = '-';
4494 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
4495 default: uv = va_arg(*args, unsigned); break;
4496 case 'l': uv = va_arg(*args, unsigned long); break;
4497 case 'V': uv = va_arg(*args, UV); break;
4501 uv = (svix < svmax) ? SvUVx(svargs[svix++]) : 0;
4503 case 'h': uv = (unsigned short)uv; break;
4504 default: uv = (unsigned)uv; break;
4505 case 'l': uv = (unsigned long)uv; break;
4511 eptr = ebuf + sizeof ebuf;
4515 p = (c == 'X') ? "0123456789ABCDEF" : "0123456789abcdef";
4521 esignbuf[esignlen++] = '0';
4522 esignbuf[esignlen++] = c; /* 'x' or 'X' */
4528 *--eptr = '0' + dig;
4530 if (alt && *eptr != '0')
4533 default: /* it had better be ten or less */
4536 *--eptr = '0' + dig;
4537 } while (uv /= base);
4540 elen = (ebuf + sizeof ebuf) - eptr;
4541 if (has_precis && precis > elen)
4542 zeros = precis - elen;
4545 /* FLOATING POINT */
4548 c = 'f'; /* maybe %F isn't supported here */
4554 /* This is evil, but floating point is even more evil */
4557 nv = va_arg(*args, double);
4559 nv = (svix < svmax) ? SvNVx(svargs[svix++]) : 0.0;
4562 if (c != 'e' && c != 'E') {
4564 (void)frexp(nv, &i);
4565 if (i == PERL_INT_MIN)
4566 die("panic: frexp");
4568 need = BIT_DIGITS(i);
4570 need += has_precis ? precis : 6; /* known default */
4574 need += 20; /* fudge factor */
4575 if (efloatsize < need) {
4576 Safefree(efloatbuf);
4577 efloatsize = need + 20; /* more fudge */
4578 New(906, efloatbuf, efloatsize, char);
4581 eptr = ebuf + sizeof ebuf;
4586 do { *--eptr = '0' + (base % 10); } while (base /= 10);
4591 do { *--eptr = '0' + (base % 10); } while (base /= 10);
4603 (void)sprintf(efloatbuf, eptr, nv);
4606 elen = strlen(efloatbuf);
4610 * User-defined locales may include arbitrary characters.
4611 * And, unfortunately, some system may alloc the "C" locale
4612 * to be overridden by a malicious user.
4615 *used_locale = TRUE;
4616 #endif /* LC_NUMERIC */
4623 i = SvCUR(sv) - origlen;
4626 case 'h': *(va_arg(*args, short*)) = i; break;
4627 default: *(va_arg(*args, int*)) = i; break;
4628 case 'l': *(va_arg(*args, long*)) = i; break;
4629 case 'V': *(va_arg(*args, IV*)) = i; break;
4632 else if (svix < svmax)
4633 sv_setuv(svargs[svix++], (UV)i);
4634 continue; /* not "break" */
4640 if (!args && dowarn &&
4641 (op->op_type == OP_PRTF || op->op_type == OP_SPRINTF)) {
4642 SV *msg = sv_newmortal();
4643 sv_setpvf(msg, "Invalid conversion in %s: ",
4644 (op->op_type == OP_PRTF) ? "printf" : "sprintf");
4646 sv_catpvf(msg, isPRINT(c) ? "\"%%%c\"" : "\"%%\\%03o\"",
4649 sv_catpv(msg, "end of string");
4650 warn("%_", msg); /* yes, this is reentrant */
4652 /* output mangled stuff */
4658 have = esignlen + zeros + elen;
4659 need = (have > width ? have : width);
4662 SvGROW(sv, SvCUR(sv) + need + 1);
4664 if (esignlen && fill == '0') {
4665 for (i = 0; i < esignlen; i++)
4669 memset(p, fill, gap);
4672 if (esignlen && fill != '0') {
4673 for (i = 0; i < esignlen; i++)
4677 for (i = zeros; i; i--)
4681 memcpy(p, eptr, elen);
4685 memset(p, ' ', gap);
4689 SvCUR(sv) = p - SvPVX(sv);
4698 SV *d = sv_newmortal();
4704 PerlIO_printf(Perl_debug_log, "SV = 0\n");
4708 flags = SvFLAGS(sv);
4711 sv_setpvf(d, "(0x%lx)\n REFCNT = %ld\n FLAGS = (",
4712 (unsigned long)SvANY(sv), (long)SvREFCNT(sv));
4713 if (flags & SVs_PADBUSY) sv_catpv(d, "PADBUSY,");
4714 if (flags & SVs_PADTMP) sv_catpv(d, "PADTMP,");
4715 if (flags & SVs_PADMY) sv_catpv(d, "PADMY,");
4716 if (flags & SVs_TEMP) sv_catpv(d, "TEMP,");
4717 if (flags & SVs_OBJECT) sv_catpv(d, "OBJECT,");
4718 if (flags & SVs_GMG) sv_catpv(d, "GMG,");
4719 if (flags & SVs_SMG) sv_catpv(d, "SMG,");
4720 if (flags & SVs_RMG) sv_catpv(d, "RMG,");
4722 if (flags & SVf_IOK) sv_catpv(d, "IOK,");
4723 if (flags & SVf_NOK) sv_catpv(d, "NOK,");
4724 if (flags & SVf_POK) sv_catpv(d, "POK,");
4725 if (flags & SVf_ROK) sv_catpv(d, "ROK,");
4726 if (flags & SVf_OOK) sv_catpv(d, "OOK,");
4727 if (flags & SVf_FAKE) sv_catpv(d, "FAKE,");
4728 if (flags & SVf_READONLY) sv_catpv(d, "READONLY,");
4731 if (flags & SVf_AMAGIC) sv_catpv(d, "OVERLOAD,");
4732 #endif /* OVERLOAD */
4733 if (flags & SVp_IOK) sv_catpv(d, "pIOK,");
4734 if (flags & SVp_NOK) sv_catpv(d, "pNOK,");
4735 if (flags & SVp_POK) sv_catpv(d, "pPOK,");
4736 if (flags & SVp_SCREAM) sv_catpv(d, "SCREAM,");
4741 if (CvANON(sv)) sv_catpv(d, "ANON,");
4742 if (CvUNIQUE(sv)) sv_catpv(d, "UNIQUE,");
4743 if (CvCLONE(sv)) sv_catpv(d, "CLONE,");
4744 if (CvCLONED(sv)) sv_catpv(d, "CLONED,");
4745 if (CvNODEBUG(sv)) sv_catpv(d, "NODEBUG,");
4748 if (HvSHAREKEYS(sv)) sv_catpv(d, "SHAREKEYS,");
4749 if (HvLAZYDEL(sv)) sv_catpv(d, "LAZYDEL,");
4752 if (GvINTRO(sv)) sv_catpv(d, "INTRO,");
4753 if (GvMULTI(sv)) sv_catpv(d, "MULTI,");
4754 if (GvASSUMECV(sv)) sv_catpv(d, "ASSUMECV,");
4755 if (GvIMPORTED(sv)) {
4756 sv_catpv(d, "IMPORT");
4757 if (GvIMPORTED(sv) == GVf_IMPORTED)
4758 sv_catpv(d, "ALL,");
4761 if (GvIMPORTED_SV(sv)) sv_catpv(d, " SV");
4762 if (GvIMPORTED_AV(sv)) sv_catpv(d, " AV");
4763 if (GvIMPORTED_HV(sv)) sv_catpv(d, " HV");
4764 if (GvIMPORTED_CV(sv)) sv_catpv(d, " CV");
4770 if (*(SvEND(d) - 1) == ',')
4771 SvPVX(d)[--SvCUR(d)] = '\0';
4775 PerlIO_printf(Perl_debug_log, "SV = ");
4778 PerlIO_printf(Perl_debug_log, "NULL%s\n", s);
4781 PerlIO_printf(Perl_debug_log, "IV%s\n", s);
4784 PerlIO_printf(Perl_debug_log, "NV%s\n", s);
4787 PerlIO_printf(Perl_debug_log, "RV%s\n", s);
4790 PerlIO_printf(Perl_debug_log, "PV%s\n", s);
4793 PerlIO_printf(Perl_debug_log, "PVIV%s\n", s);
4796 PerlIO_printf(Perl_debug_log, "PVNV%s\n", s);
4799 PerlIO_printf(Perl_debug_log, "PVBM%s\n", s);
4802 PerlIO_printf(Perl_debug_log, "PVMG%s\n", s);
4805 PerlIO_printf(Perl_debug_log, "PVLV%s\n", s);
4808 PerlIO_printf(Perl_debug_log, "PVAV%s\n", s);
4811 PerlIO_printf(Perl_debug_log, "PVHV%s\n", s);
4814 PerlIO_printf(Perl_debug_log, "PVCV%s\n", s);
4817 PerlIO_printf(Perl_debug_log, "PVGV%s\n", s);
4820 PerlIO_printf(Perl_debug_log, "PVFM%s\n", s);
4823 PerlIO_printf(Perl_debug_log, "PVIO%s\n", s);
4826 PerlIO_printf(Perl_debug_log, "UNKNOWN%s\n", s);
4829 if (type >= SVt_PVIV || type == SVt_IV)
4830 PerlIO_printf(Perl_debug_log, " IV = %ld\n", (long)SvIVX(sv));
4831 if (type >= SVt_PVNV || type == SVt_NV) {
4832 SET_NUMERIC_STANDARD();
4833 PerlIO_printf(Perl_debug_log, " NV = %.*g\n", DBL_DIG, SvNVX(sv));
4836 PerlIO_printf(Perl_debug_log, " RV = 0x%lx\n", (long)SvRV(sv));
4842 if (type <= SVt_PVLV) {
4844 PerlIO_printf(Perl_debug_log, " PV = 0x%lx \"%s\"\n CUR = %ld\n LEN = %ld\n",
4845 (long)SvPVX(sv), SvPVX(sv), (long)SvCUR(sv), (long)SvLEN(sv));
4847 PerlIO_printf(Perl_debug_log, " PV = 0\n");
4849 if (type >= SVt_PVMG) {
4851 PerlIO_printf(Perl_debug_log, " MAGIC = 0x%lx\n", (long)SvMAGIC(sv));
4854 PerlIO_printf(Perl_debug_log, " STASH = \"%s\"\n", HvNAME(SvSTASH(sv)));
4858 PerlIO_printf(Perl_debug_log, " TYPE = %c\n", LvTYPE(sv));
4859 PerlIO_printf(Perl_debug_log, " TARGOFF = %ld\n", (long)LvTARGOFF(sv));
4860 PerlIO_printf(Perl_debug_log, " TARGLEN = %ld\n", (long)LvTARGLEN(sv));
4861 PerlIO_printf(Perl_debug_log, " TARG = 0x%lx\n", (long)LvTARG(sv));
4862 sv_dump(LvTARG(sv));
4865 PerlIO_printf(Perl_debug_log, " ARRAY = 0x%lx\n", (long)AvARRAY(sv));
4866 PerlIO_printf(Perl_debug_log, " ALLOC = 0x%lx\n", (long)AvALLOC(sv));
4867 PerlIO_printf(Perl_debug_log, " FILL = %ld\n", (long)AvFILL(sv));
4868 PerlIO_printf(Perl_debug_log, " MAX = %ld\n", (long)AvMAX(sv));
4869 PerlIO_printf(Perl_debug_log, " ARYLEN = 0x%lx\n", (long)AvARYLEN(sv));
4870 flags = AvFLAGS(sv);
4872 if (flags & AVf_REAL) sv_catpv(d, ",REAL");
4873 if (flags & AVf_REIFY) sv_catpv(d, ",REIFY");
4874 if (flags & AVf_REUSED) sv_catpv(d, ",REUSED");
4875 PerlIO_printf(Perl_debug_log, " FLAGS = (%s)\n",
4876 SvCUR(d) ? SvPVX(d) + 1 : "");
4879 PerlIO_printf(Perl_debug_log, " ARRAY = 0x%lx\n",(long)HvARRAY(sv));
4880 PerlIO_printf(Perl_debug_log, " KEYS = %ld\n", (long)HvKEYS(sv));
4881 PerlIO_printf(Perl_debug_log, " FILL = %ld\n", (long)HvFILL(sv));
4882 PerlIO_printf(Perl_debug_log, " MAX = %ld\n", (long)HvMAX(sv));
4883 PerlIO_printf(Perl_debug_log, " RITER = %ld\n", (long)HvRITER(sv));
4884 PerlIO_printf(Perl_debug_log, " EITER = 0x%lx\n",(long) HvEITER(sv));
4886 PerlIO_printf(Perl_debug_log, " PMROOT = 0x%lx\n",(long)HvPMROOT(sv));
4888 PerlIO_printf(Perl_debug_log, " NAME = \"%s\"\n", HvNAME(sv));
4892 PerlIO_printf(Perl_debug_log, " PROTOTYPE = \"%s\"\n", SvPV(sv,na));
4895 PerlIO_printf(Perl_debug_log, " STASH = 0x%lx\n", (long)CvSTASH(sv));
4896 PerlIO_printf(Perl_debug_log, " START = 0x%lx\n", (long)CvSTART(sv));
4897 PerlIO_printf(Perl_debug_log, " ROOT = 0x%lx\n", (long)CvROOT(sv));
4898 PerlIO_printf(Perl_debug_log, " XSUB = 0x%lx\n", (long)CvXSUB(sv));
4899 PerlIO_printf(Perl_debug_log, " XSUBANY = %ld\n", (long)CvXSUBANY(sv).any_i32);
4900 PerlIO_printf(Perl_debug_log, " GV = 0x%lx", (long)CvGV(sv));
4901 if (CvGV(sv) && GvNAME(CvGV(sv))) {
4902 PerlIO_printf(Perl_debug_log, " \"%s\"\n", GvNAME(CvGV(sv)));
4904 PerlIO_printf(Perl_debug_log, "\n");
4906 PerlIO_printf(Perl_debug_log, " FILEGV = 0x%lx\n", (long)CvFILEGV(sv));
4907 PerlIO_printf(Perl_debug_log, " DEPTH = %ld\n", (long)CvDEPTH(sv));
4908 PerlIO_printf(Perl_debug_log, " PADLIST = 0x%lx\n", (long)CvPADLIST(sv));
4909 PerlIO_printf(Perl_debug_log, " OUTSIDE = 0x%lx\n", (long)CvOUTSIDE(sv));
4910 if (type == SVt_PVFM)
4911 PerlIO_printf(Perl_debug_log, " LINES = %ld\n", (long)FmLINES(sv));
4914 PerlIO_printf(Perl_debug_log, " NAME = \"%s\"\n", GvNAME(sv));
4915 PerlIO_printf(Perl_debug_log, " NAMELEN = %ld\n", (long)GvNAMELEN(sv));
4916 PerlIO_printf(Perl_debug_log, " STASH = \"%s\"\n", HvNAME(GvSTASH(sv)));
4917 PerlIO_printf(Perl_debug_log, " GP = 0x%lx\n", (long)GvGP(sv));
4918 PerlIO_printf(Perl_debug_log, " SV = 0x%lx\n", (long)GvSV(sv));
4919 PerlIO_printf(Perl_debug_log, " REFCNT = %ld\n", (long)GvREFCNT(sv));
4920 PerlIO_printf(Perl_debug_log, " IO = 0x%lx\n", (long)GvIOp(sv));
4921 PerlIO_printf(Perl_debug_log, " FORM = 0x%lx\n", (long)GvFORM(sv));
4922 PerlIO_printf(Perl_debug_log, " AV = 0x%lx\n", (long)GvAV(sv));
4923 PerlIO_printf(Perl_debug_log, " HV = 0x%lx\n", (long)GvHV(sv));
4924 PerlIO_printf(Perl_debug_log, " CV = 0x%lx\n", (long)GvCV(sv));
4925 PerlIO_printf(Perl_debug_log, " CVGEN = 0x%lx\n", (long)GvCVGEN(sv));
4926 PerlIO_printf(Perl_debug_log, " LASTEXPR = %ld\n", (long)GvLASTEXPR(sv));
4927 PerlIO_printf(Perl_debug_log, " LINE = %ld\n", (long)GvLINE(sv));
4928 PerlIO_printf(Perl_debug_log, " FILEGV = 0x%lx\n", (long)GvFILEGV(sv));
4929 PerlIO_printf(Perl_debug_log, " EGV = 0x%lx\n", (long)GvEGV(sv));
4932 PerlIO_printf(Perl_debug_log, " IFP = 0x%lx\n", (long)IoIFP(sv));
4933 PerlIO_printf(Perl_debug_log, " OFP = 0x%lx\n", (long)IoOFP(sv));
4934 PerlIO_printf(Perl_debug_log, " DIRP = 0x%lx\n", (long)IoDIRP(sv));
4935 PerlIO_printf(Perl_debug_log, " LINES = %ld\n", (long)IoLINES(sv));
4936 PerlIO_printf(Perl_debug_log, " PAGE = %ld\n", (long)IoPAGE(sv));
4937 PerlIO_printf(Perl_debug_log, " PAGE_LEN = %ld\n", (long)IoPAGE_LEN(sv));
4938 PerlIO_printf(Perl_debug_log, " LINES_LEFT = %ld\n", (long)IoLINES_LEFT(sv));
4939 PerlIO_printf(Perl_debug_log, " TOP_NAME = \"%s\"\n", IoTOP_NAME(sv));
4940 PerlIO_printf(Perl_debug_log, " TOP_GV = 0x%lx\n", (long)IoTOP_GV(sv));
4941 PerlIO_printf(Perl_debug_log, " FMT_NAME = \"%s\"\n", IoFMT_NAME(sv));
4942 PerlIO_printf(Perl_debug_log, " FMT_GV = 0x%lx\n", (long)IoFMT_GV(sv));
4943 PerlIO_printf(Perl_debug_log, " BOTTOM_NAME = \"%s\"\n", IoBOTTOM_NAME(sv));
4944 PerlIO_printf(Perl_debug_log, " BOTTOM_GV = 0x%lx\n", (long)IoBOTTOM_GV(sv));
4945 PerlIO_printf(Perl_debug_log, " SUBPROCESS = %ld\n", (long)IoSUBPROCESS(sv));
4946 PerlIO_printf(Perl_debug_log, " TYPE = %c\n", IoTYPE(sv));
4947 PerlIO_printf(Perl_debug_log, " FLAGS = 0x%lx\n", (long)IoFLAGS(sv));