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__)
44 #define FCALL this->*f
45 #define VTBL this->*vtbl
47 #else /* !PERL_OBJECT */
49 static IV asIV _((SV* sv));
50 static UV asUV _((SV* sv));
51 static SV *more_sv _((void));
52 static XPVIV *more_xiv _((void));
53 static XPVNV *more_xnv _((void));
54 static XPV *more_xpv _((void));
55 static XRV *more_xrv _((void));
56 static XPVIV *new_xiv _((void));
57 static XPVNV *new_xnv _((void));
58 static XPV *new_xpv _((void));
59 static XRV *new_xrv _((void));
60 static void del_xiv _((XPVIV* p));
61 static void del_xnv _((XPVNV* p));
62 static void del_xpv _((XPV* p));
63 static void del_xrv _((XRV* p));
64 static void sv_mortalgrow _((void));
65 static void sv_unglob _((SV* sv));
66 static void sv_check_thinkfirst _((SV *sv));
68 typedef void (*SVFUNC) _((SV*));
72 #endif /* PERL_OBJECT */
78 MUTEX_LOCK(&sv_mutex); \
79 (p) = (SV*)safemalloc(sizeof(SV)); \
81 MUTEX_UNLOCK(&sv_mutex); \
86 MUTEX_LOCK(&sv_mutex); \
88 Safefree((char*)(p)); \
89 MUTEX_UNLOCK(&sv_mutex); \
95 #define REGHASH(sv,size) ((((U32)(sv)) >> 2) % (size))
97 #define REG_REPLACE(sv,a,b) \
99 void* p = sv->sv_any; \
100 I32 h = REGHASH(sv, regsize); \
102 while (registry[i] != (a)) { \
103 if (++i >= regsize) \
106 die("SV registry bug"); \
111 #define REG_ADD(sv) REG_REPLACE(sv,Nullsv,sv)
112 #define REG_REMOVE(sv) REG_REPLACE(sv,sv,Nullsv)
118 if (sv_count >= (regsize >> 1))
120 SV **oldreg = registry;
121 I32 oldsize = regsize;
123 regsize = regsize ? ((regsize << 2) + 1) : 2037;
124 registry = (SV**)safemalloc(regsize * sizeof(SV*));
125 memzero(registry, regsize * sizeof(SV*));
130 for (i = 0; i < oldsize; ++i) {
131 SV* oldsv = oldreg[i];
157 for (i = 0; i < regsize; ++i) {
158 SV* sv = registry[i];
165 sv_add_arena(ptr, size, flags)
170 if (!(flags & SVf_FAKE))
177 * "A time to plant, and a time to uproot what was planted..."
180 #define plant_SV(p) \
182 SvANY(p) = (void *)sv_root; \
183 SvFLAGS(p) = SVTYPEMASK; \
188 /* sv_mutex must be held while calling uproot_SV() */
189 #define uproot_SV(p) \
192 sv_root = (SV*)SvANY(p); \
196 #define new_SV(p) do { \
197 MUTEX_LOCK(&sv_mutex); \
202 MUTEX_UNLOCK(&sv_mutex); \
207 #define del_SV(p) do { \
208 MUTEX_LOCK(&sv_mutex); \
213 MUTEX_UNLOCK(&sv_mutex); \
224 for (sva = sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
226 svend = &sva[SvREFCNT(sva)];
227 if (p >= sv && p < svend)
231 warn("Attempt to free non-arena SV: 0x%lx", (unsigned long)p);
238 #else /* ! DEBUGGING */
240 #define del_SV(p) plant_SV(p)
242 #endif /* DEBUGGING */
245 sv_add_arena(char *ptr, U32 size, U32 flags)
250 Zero(sva, size, char);
252 /* The first SV in an arena isn't an SV. */
253 SvANY(sva) = (void *) sv_arenaroot; /* ptr to next arena */
254 SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */
255 SvFLAGS(sva) = flags; /* FAKE if not to be freed */
260 svend = &sva[SvREFCNT(sva) - 1];
263 SvANY(sv) = (void *)(SV*)(sv + 1);
264 SvFLAGS(sv) = SVTYPEMASK;
268 SvFLAGS(sv) = SVTYPEMASK;
271 /* sv_mutex must be held while calling more_sv() */
278 sv_add_arena(nice_chunk, nice_chunk_size, 0);
282 char *chunk; /* must use New here to match call to */
283 New(704,chunk,1008,char); /* Safefree() in sv_free_arenas() */
284 sv_add_arena(chunk, 1008, 0);
297 for (sva = sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
298 svend = &sva[SvREFCNT(sva)];
299 for (sv = sva + 1; sv < svend; ++sv) {
300 if (SvTYPE(sv) != SVTYPEMASK)
309 do_report_used(SV *sv)
311 if (SvTYPE(sv) != SVTYPEMASK) {
312 /* XXX Perhaps this ought to go to Perl_debug_log, if DEBUGGING. */
313 PerlIO_printf(PerlIO_stderr(), "****\n");
321 visit(do_report_used);
325 do_clean_objs(SV *sv)
329 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
330 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
336 /* XXX Might want to check arrays, etc. */
339 #ifndef DISABLE_DESTRUCTOR_KLUDGE
341 do_clean_named_objs(SV *sv)
343 if (SvTYPE(sv) == SVt_PVGV && GvSV(sv))
344 do_clean_objs(GvSV(sv));
348 static bool in_clean_objs = FALSE;
353 in_clean_objs = TRUE;
354 #ifndef DISABLE_DESTRUCTOR_KLUDGE
355 visit(do_clean_named_objs);
357 visit(do_clean_objs);
358 in_clean_objs = FALSE;
364 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops:\n "), sv_dump(sv));)
365 SvFLAGS(sv) |= SVf_BREAK;
369 static bool in_clean_all = FALSE;
376 in_clean_all = FALSE;
385 /* Free arenas here, but be careful about fake ones. (We assume
386 contiguity of the fake ones with the corresponding real ones.) */
388 for (sva = sv_arenaroot; sva; sva = svanext) {
389 svanext = (SV*) SvANY(sva);
390 while (svanext && SvFAKE(svanext))
391 svanext = (SV*) SvANY(svanext);
394 Safefree((void *)sva);
408 * See comment in more_xiv() -- RAM.
410 xiv_root = (IV**)*xiv;
411 return (XPVIV*)((char*)xiv - sizeof(XPV));
419 IV** xiv = (IV**)((char*)(p) + sizeof(XPV));
420 *xiv = (IV *)xiv_root;
428 register IV** xivend;
429 XPV* ptr = (XPV*)safemalloc(1008);
430 ptr->xpv_pv = (char*)xiv_arenaroot; /* linked list of xiv arenas */
431 xiv_arenaroot = ptr; /* to keep Purify happy */
434 xivend = &xiv[1008 / sizeof(IV *) - 1];
435 xiv += (sizeof(XPV) - 1) / sizeof(IV *) + 1; /* fudge by size of XPV */
437 while (xiv < xivend) {
438 *xiv = (IV *)(xiv + 1);
451 xnv_root = *(double**)xnv;
452 return (XPVNV*)((char*)xnv - sizeof(XPVIV));
460 double* xnv = (double*)((char*)(p) + sizeof(XPVIV));
461 *(double**)xnv = xnv_root;
468 register double* xnv;
469 register double* xnvend;
470 xnv = (double*)safemalloc(1008);
471 xnvend = &xnv[1008 / sizeof(double) - 1];
472 xnv += (sizeof(XPVIV) - 1) / sizeof(double) + 1; /* fudge by sizeof XPVIV */
474 while (xnv < xnvend) {
475 *(double**)xnv = (double*)(xnv + 1);
488 xrv_root = (XRV*)xrv->xrv_rv;
497 p->xrv_rv = (SV*)xrv_root;
505 register XRV* xrvend;
506 xrv_root = (XRV*)safemalloc(1008);
508 xrvend = &xrv[1008 / sizeof(XRV) - 1];
509 while (xrv < xrvend) {
510 xrv->xrv_rv = (SV*)(xrv + 1);
523 xpv_root = (XPV*)xpv->xpv_pv;
532 p->xpv_pv = (char*)xpv_root;
540 register XPV* xpvend;
541 xpv_root = (XPV*)safemalloc(1008);
543 xpvend = &xpv[1008 / sizeof(XPV) - 1];
544 while (xpv < xpvend) {
545 xpv->xpv_pv = (char*)(xpv + 1);
553 #define new_XIV() (void*)safemalloc(sizeof(XPVIV))
554 #define del_XIV(p) Safefree((char*)p)
556 #define new_XIV() (void*)new_xiv()
557 #define del_XIV(p) del_xiv((XPVIV*) p)
561 #define new_XNV() (void*)safemalloc(sizeof(XPVNV))
562 #define del_XNV(p) Safefree((char*)p)
564 #define new_XNV() (void*)new_xnv()
565 #define del_XNV(p) del_xnv((XPVNV*) p)
569 #define new_XRV() (void*)safemalloc(sizeof(XRV))
570 #define del_XRV(p) Safefree((char*)p)
572 #define new_XRV() (void*)new_xrv()
573 #define del_XRV(p) del_xrv((XRV*) p)
577 #define new_XPV() (void*)safemalloc(sizeof(XPV))
578 #define del_XPV(p) Safefree((char*)p)
580 #define new_XPV() (void*)new_xpv()
581 #define del_XPV(p) del_xpv((XPV *)p)
584 #define new_XPVIV() (void*)safemalloc(sizeof(XPVIV))
585 #define del_XPVIV(p) Safefree((char*)p)
587 #define new_XPVNV() (void*)safemalloc(sizeof(XPVNV))
588 #define del_XPVNV(p) Safefree((char*)p)
590 #define new_XPVMG() (void*)safemalloc(sizeof(XPVMG))
591 #define del_XPVMG(p) Safefree((char*)p)
593 #define new_XPVLV() (void*)safemalloc(sizeof(XPVLV))
594 #define del_XPVLV(p) Safefree((char*)p)
596 #define new_XPVAV() (void*)safemalloc(sizeof(XPVAV))
597 #define del_XPVAV(p) Safefree((char*)p)
599 #define new_XPVHV() (void*)safemalloc(sizeof(XPVHV))
600 #define del_XPVHV(p) Safefree((char*)p)
602 #define new_XPVCV() (void*)safemalloc(sizeof(XPVCV))
603 #define del_XPVCV(p) Safefree((char*)p)
605 #define new_XPVGV() (void*)safemalloc(sizeof(XPVGV))
606 #define del_XPVGV(p) Safefree((char*)p)
608 #define new_XPVBM() (void*)safemalloc(sizeof(XPVBM))
609 #define del_XPVBM(p) Safefree((char*)p)
611 #define new_XPVFM() (void*)safemalloc(sizeof(XPVFM))
612 #define del_XPVFM(p) Safefree((char*)p)
614 #define new_XPVIO() (void*)safemalloc(sizeof(XPVIO))
615 #define del_XPVIO(p) Safefree((char*)p)
618 sv_upgrade(register SV *sv, U32 mt)
628 if (SvTYPE(sv) == mt)
634 switch (SvTYPE(sv)) {
649 nv = (double)SvIVX(sv);
655 else if (mt < SVt_PVIV)
672 pv = (char*)SvRV(sv);
676 nv = (double)(unsigned long)pv;
692 else if (mt == SVt_NV)
703 del_XPVIV(SvANY(sv));
713 del_XPVNV(SvANY(sv));
723 del_XPVMG(SvANY(sv));
726 croak("Can't upgrade that kind of scalar");
731 croak("Can't upgrade to undef");
733 SvANY(sv) = new_XIV();
737 SvANY(sv) = new_XNV();
741 SvANY(sv) = new_XRV();
745 SvANY(sv) = new_XPV();
751 SvANY(sv) = new_XPVIV();
761 SvANY(sv) = new_XPVNV();
769 SvANY(sv) = new_XPVMG();
779 SvANY(sv) = new_XPVLV();
793 SvANY(sv) = new_XPVAV();
808 SvANY(sv) = new_XPVHV();
824 SvANY(sv) = new_XPVCV();
825 Zero(SvANY(sv), 1, XPVCV);
835 SvANY(sv) = new_XPVGV();
850 SvANY(sv) = new_XPVBM();
863 SvANY(sv) = new_XPVFM();
864 Zero(SvANY(sv), 1, XPVFM);
874 SvANY(sv) = new_XPVIO();
875 Zero(SvANY(sv), 1, XPVIO);
886 SvFLAGS(sv) &= ~SVTYPEMASK;
895 SV *t = sv_newmortal();
905 else if (sv == (SV*)0x55555555 || SvTYPE(sv) == 'U') {
909 else if (sv == &sv_undef || sv == &sv_no || sv == &sv_yes) {
910 if (sv == &sv_undef) {
911 sv_catpv(t, "SV_UNDEF");
912 if (!(SvFLAGS(sv) & (SVf_OK|SVf_OOK|SVs_OBJECT|
913 SVs_GMG|SVs_SMG|SVs_RMG)) &&
917 else if (sv == &sv_no) {
918 sv_catpv(t, "SV_NO");
919 if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
920 SVs_GMG|SVs_SMG|SVs_RMG)) &&
921 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
928 sv_catpv(t, "SV_YES");
929 if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
930 SVs_GMG|SVs_SMG|SVs_RMG)) &&
931 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
934 SvPVX(sv) && *SvPVX(sv) == '1' &&
940 else if (SvREFCNT(sv) == 0) {
946 if (SvCUR(t) + unref > 10) {
947 SvCUR(t) = unref + 3;
955 switch (SvTYPE(sv)) {
957 sv_catpv(t, "FREED");
961 sv_catpv(t, "UNDEF");
995 sv_catpvf(t, "CV(%s)", GvNAME(CvGV(sv)));
1015 sv_catpv(t, "(null)");
1017 sv_catpvf(t, "(%ld+\"%.127s\")",(long)SvIVX(sv),SvPVX(sv));
1019 sv_catpvf(t, "(\"%.127s\")",SvPVX(sv));
1021 else if (SvNOKp(sv)) {
1022 SET_NUMERIC_STANDARD();
1023 sv_catpvf(t, "(%g)",SvNVX(sv));
1025 else if (SvIOKp(sv))
1026 sv_catpvf(t, "(%ld)",(long)SvIVX(sv));
1040 sv_backoff(register SV *sv)
1044 char *s = SvPVX(sv);
1045 SvLEN(sv) += SvIVX(sv);
1046 SvPVX(sv) -= SvIVX(sv);
1048 Move(s, SvPVX(sv), SvCUR(sv)+1, char);
1050 SvFLAGS(sv) &= ~SVf_OOK;
1056 sv_grow(register SV *sv, register I32 newlen)
1058 sv_grow(SV* sv, unsigned long newlen)
1063 #ifdef HAS_64K_LIMIT
1064 if (newlen >= 0x10000) {
1065 PerlIO_printf(Perl_debug_log, "Allocation too large: %lx\n", newlen);
1068 #endif /* HAS_64K_LIMIT */
1071 if (SvTYPE(sv) < SVt_PV) {
1072 sv_upgrade(sv, SVt_PV);
1075 else if (SvOOK(sv)) { /* pv is offset? */
1078 if (newlen > SvLEN(sv))
1079 newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */
1083 if (newlen > SvLEN(sv)) { /* need more room? */
1085 Renew(s,newlen,char);
1087 New(703,s,newlen,char);
1089 SvLEN_set(sv, newlen);
1095 sv_setiv(register SV *sv, IV i)
1097 sv_check_thinkfirst(sv);
1098 switch (SvTYPE(sv)) {
1100 sv_upgrade(sv, SVt_IV);
1103 sv_upgrade(sv, SVt_PVNV);
1107 sv_upgrade(sv, SVt_PVIV);
1123 croak("Can't coerce %s to integer in %s", sv_reftype(sv,0),
1124 op_desc[op->op_type]);
1127 (void)SvIOK_only(sv); /* validate number */
1133 sv_setuv(register SV *sv, UV u)
1138 sv_setnv(sv, (double)u);
1142 sv_setnv(register SV *sv, double num)
1144 sv_check_thinkfirst(sv);
1145 switch (SvTYPE(sv)) {
1148 sv_upgrade(sv, SVt_NV);
1154 sv_upgrade(sv, SVt_PVNV);
1161 (void)SvOOK_off(sv);
1176 croak("Can't coerce %s to number in %s", sv_reftype(sv,0),
1177 op_name[op->op_type]);
1181 (void)SvNOK_only(sv); /* validate number */
1186 not_a_number(SV *sv)
1192 char *limit = tmpbuf + sizeof(tmpbuf) - 8;
1193 /* each *s can expand to 4 chars + "...\0",
1194 i.e. need room for 8 chars */
1196 for (s = SvPVX(sv); *s && d < limit; s++) {
1198 if (ch & 128 && !isPRINT_LC(ch)) {
1207 else if (ch == '\r') {
1211 else if (ch == '\f') {
1215 else if (ch == '\\') {
1219 else if (isPRINT_LC(ch))
1234 warn("Argument \"%s\" isn't numeric in %s", tmpbuf,
1235 op_name[op->op_type]);
1237 warn("Argument \"%s\" isn't numeric", tmpbuf);
1241 sv_2iv(register SV *sv)
1245 if (SvGMAGICAL(sv)) {
1250 if (SvNVX(sv) < 0.0)
1251 return I_V(SvNVX(sv));
1253 return (IV) U_V(SvNVX(sv));
1255 if (SvPOKp(sv) && SvLEN(sv))
1258 if (dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) {
1266 if (SvTHINKFIRST(sv)) {
1270 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
1271 return SvIV(tmpstr);
1272 #endif /* OVERLOAD */
1273 return (IV)SvRV(sv);
1275 if (SvREADONLY(sv)) {
1277 if (SvNVX(sv) < 0.0)
1278 return I_V(SvNVX(sv));
1280 return (IV) U_V(SvNVX(sv));
1282 if (SvPOKp(sv) && SvLEN(sv))
1289 switch (SvTYPE(sv)) {
1291 sv_upgrade(sv, SVt_IV);
1294 sv_upgrade(sv, SVt_PVIV);
1297 sv_upgrade(sv, SVt_PVNV);
1302 if (SvNVX(sv) < 0.0)
1303 SvIVX(sv) = I_V(SvNVX(sv));
1305 SvUVX(sv) = U_V(SvNVX(sv));
1307 else if (SvPOKp(sv) && SvLEN(sv)) {
1309 SvIVX(sv) = asIV(sv);
1313 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1317 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2iv(%ld)\n",
1318 (unsigned long)sv,(long)SvIVX(sv)));
1323 sv_2uv(register SV *sv)
1327 if (SvGMAGICAL(sv)) {
1332 return U_V(SvNVX(sv));
1333 if (SvPOKp(sv) && SvLEN(sv))
1336 if (dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) {
1344 if (SvTHINKFIRST(sv)) {
1348 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
1349 return SvUV(tmpstr);
1350 #endif /* OVERLOAD */
1351 return (UV)SvRV(sv);
1353 if (SvREADONLY(sv)) {
1355 return U_V(SvNVX(sv));
1357 if (SvPOKp(sv) && SvLEN(sv))
1364 switch (SvTYPE(sv)) {
1366 sv_upgrade(sv, SVt_IV);
1369 sv_upgrade(sv, SVt_PVIV);
1372 sv_upgrade(sv, SVt_PVNV);
1377 SvUVX(sv) = U_V(SvNVX(sv));
1379 else if (SvPOKp(sv) && SvLEN(sv)) {
1381 SvUVX(sv) = asUV(sv);
1384 if (dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) {
1391 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2uv(%lu)\n",
1392 (unsigned long)sv,SvUVX(sv)));
1397 sv_2nv(register SV *sv)
1401 if (SvGMAGICAL(sv)) {
1405 if (SvPOKp(sv) && SvLEN(sv)) {
1406 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1408 SET_NUMERIC_STANDARD();
1409 return atof(SvPVX(sv));
1412 return (double)SvIVX(sv);
1414 if (dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) {
1422 if (SvTHINKFIRST(sv)) {
1426 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)))
1427 return SvNV(tmpstr);
1428 #endif /* OVERLOAD */
1429 return (double)(unsigned long)SvRV(sv);
1431 if (SvREADONLY(sv)) {
1432 if (SvPOKp(sv) && SvLEN(sv)) {
1433 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1435 SET_NUMERIC_STANDARD();
1436 return atof(SvPVX(sv));
1439 return (double)SvIVX(sv);
1445 if (SvTYPE(sv) < SVt_NV) {
1446 if (SvTYPE(sv) == SVt_IV)
1447 sv_upgrade(sv, SVt_PVNV);
1449 sv_upgrade(sv, SVt_NV);
1450 DEBUG_c(SET_NUMERIC_STANDARD());
1451 DEBUG_c(PerlIO_printf(Perl_debug_log,
1452 "0x%lx num(%g)\n",(unsigned long)sv,SvNVX(sv)));
1454 else if (SvTYPE(sv) < SVt_PVNV)
1455 sv_upgrade(sv, SVt_PVNV);
1457 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
1459 SvNVX(sv) = (double)SvIVX(sv);
1461 else if (SvPOKp(sv) && SvLEN(sv)) {
1462 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1464 SET_NUMERIC_STANDARD();
1465 SvNVX(sv) = atof(SvPVX(sv));
1469 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1474 DEBUG_c(SET_NUMERIC_STANDARD());
1475 DEBUG_c(PerlIO_printf(Perl_debug_log,
1476 "0x%lx 2nv(%g)\n",(unsigned long)sv,SvNVX(sv)));
1483 I32 numtype = looks_like_number(sv);
1487 return atol(SvPVX(sv));
1488 if (!numtype && dowarn)
1490 SET_NUMERIC_STANDARD();
1491 d = atof(SvPVX(sv));
1501 I32 numtype = looks_like_number(sv);
1505 return strtoul(SvPVX(sv), Null(char**), 10);
1507 if (!numtype && dowarn)
1509 SET_NUMERIC_STANDARD();
1510 return U_V(atof(SvPVX(sv)));
1514 looks_like_number(SV *sv)
1517 register char *send;
1518 register char *sbegin;
1526 else if (SvPOKp(sv))
1527 sbegin = SvPV(sv, len);
1530 send = sbegin + len;
1535 if (*s == '+' || *s == '-')
1538 /* next must be digit or '.' */
1542 } while (isDIGIT(*s));
1545 while (isDIGIT(*s)) /* optional digits after "." */
1549 else if (*s == '.') {
1551 /* no digits before '.' means we need digits after it */
1555 } while (isDIGIT(*s));
1564 * we return 1 if the number can be converted to _integer_ with atol()
1565 * and 2 if you need (int)atof().
1569 /* we can have an optional exponent part */
1570 if (*s == 'e' || *s == 'E') {
1573 if (*s == '+' || *s == '-')
1578 } while (isDIGIT(*s));
1587 if (len == 10 && memEQ(sbegin, "0 but true", 10))
1593 sv_2pv(register SV *sv, STRLEN *lp)
1598 char tmpbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
1604 if (SvGMAGICAL(sv)) {
1611 (void)sprintf(tmpbuf,"%ld",(long)SvIVX(sv));
1616 SET_NUMERIC_STANDARD();
1617 Gconvert(SvNVX(sv), DBL_DIG, 0, tmpbuf);
1622 if (dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) {
1631 if (SvTHINKFIRST(sv)) {
1635 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)))
1636 return SvPV(tmpstr,*lp);
1637 #endif /* OVERLOAD */
1642 switch (SvTYPE(sv)) {
1651 case SVt_PVMG: s = "SCALAR"; break;
1652 case SVt_PVLV: s = "LVALUE"; break;
1653 case SVt_PVAV: s = "ARRAY"; break;
1654 case SVt_PVHV: s = "HASH"; break;
1655 case SVt_PVCV: s = "CODE"; break;
1656 case SVt_PVGV: s = "GLOB"; break;
1657 case SVt_PVFM: s = "FORMATLINE"; break;
1658 case SVt_PVIO: s = "IO"; break;
1659 default: s = "UNKNOWN"; break;
1663 sv_setpvf(tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
1666 sv_catpvf(tsv, "(0x%lx)", (unsigned long)sv);
1672 if (SvREADONLY(sv)) {
1674 SET_NUMERIC_STANDARD();
1675 Gconvert(SvNVX(sv), DBL_DIG, 0, tmpbuf);
1680 (void)sprintf(tmpbuf,"%ld",(long)SvIVX(sv));
1690 if (!SvUPGRADE(sv, SVt_PV))
1693 if (SvTYPE(sv) < SVt_PVNV)
1694 sv_upgrade(sv, SVt_PVNV);
1697 olderrno = errno; /* some Xenix systems wipe out errno here */
1699 if (SvNVX(sv) == 0.0)
1700 (void)strcpy(s,"0");
1704 SET_NUMERIC_STANDARD();
1705 Gconvert(SvNVX(sv), DBL_DIG, 0, s);
1708 #ifdef FIXNEGATIVEZERO
1709 if (*s == '-' && s[1] == '0' && !s[2])
1718 else if (SvIOKp(sv)) {
1719 U32 oldIOK = SvIOK(sv);
1720 if (SvTYPE(sv) < SVt_PVIV)
1721 sv_upgrade(sv, SVt_PVIV);
1722 olderrno = errno; /* some Xenix systems wipe out errno here */
1723 sv_setpviv(sv, SvIVX(sv));
1733 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1738 *lp = s - SvPVX(sv);
1741 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2pv(%s)\n",(unsigned long)sv,SvPVX(sv)));
1745 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
1746 /* Sneaky stuff here */
1750 tsv = newSVpv(tmpbuf, 0);
1766 len = strlen(tmpbuf);
1768 #ifdef FIXNEGATIVEZERO
1769 if (len == 2 && t[0] == '-' && t[1] == '0') {
1774 (void)SvUPGRADE(sv, SVt_PV);
1776 s = SvGROW(sv, len + 1);
1784 /* This function is only called on magical items */
1786 sv_2bool(register SV *sv)
1798 if (SvAMAGIC(sv) && (tmpsv = AMG_CALLun(sv,bool_)))
1799 return SvTRUE(tmpsv);
1801 #endif /* OVERLOAD */
1802 return SvRV(sv) != 0;
1805 register XPV* Xpvtmp;
1806 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
1807 (*Xpvtmp->xpv_pv > '0' ||
1808 Xpvtmp->xpv_cur > 1 ||
1809 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
1816 return SvIVX(sv) != 0;
1819 return SvNVX(sv) != 0.0;
1826 /* Note: sv_setsv() should not be called with a source string that needs
1827 * to be reused, since it may destroy the source string if it is marked
1832 sv_setsv(SV *dstr, register SV *sstr)
1835 register U32 sflags;
1841 sv_check_thinkfirst(dstr);
1844 stype = SvTYPE(sstr);
1845 dtype = SvTYPE(dstr);
1847 if (dtype == SVt_PVGV && (SvFLAGS(dstr) & SVf_FAKE)) {
1848 sv_unglob(dstr); /* so fake GLOB won't perpetuate */
1849 sv_setpvn(dstr, "", 0);
1850 (void)SvPOK_only(dstr);
1851 dtype = SvTYPE(dstr);
1856 #endif /* OVERLOAD */
1857 /* There's a lot of redundancy below but we're going for speed here */
1861 (void)SvOK_off(dstr);
1864 if (dtype != SVt_IV && dtype < SVt_PVIV) {
1866 sv_upgrade(dstr, SVt_IV);
1867 else if (dtype == SVt_NV)
1868 sv_upgrade(dstr, SVt_PVNV);
1870 sv_upgrade(dstr, SVt_PVIV);
1874 if (dtype != SVt_NV && dtype < SVt_PVNV) {
1876 sv_upgrade(dstr, SVt_NV);
1878 sv_upgrade(dstr, SVt_PVNV);
1883 sv_upgrade(dstr, SVt_RV);
1884 else if (dtype == SVt_PVGV &&
1885 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
1888 if (curcop->cop_stash != GvSTASH(dstr))
1889 GvIMPORTED_on(dstr);
1899 sv_upgrade(dstr, SVt_PV);
1902 if (dtype < SVt_PVIV)
1903 sv_upgrade(dstr, SVt_PVIV);
1906 if (dtype < SVt_PVNV)
1907 sv_upgrade(dstr, SVt_PVNV);
1915 croak("Bizarre copy of %s in %s", sv_reftype(sstr, 0),
1916 op_name[op->op_type]);
1918 croak("Bizarre copy of %s", sv_reftype(sstr, 0));
1922 if (dtype <= SVt_PVGV) {
1924 if (dtype != SVt_PVGV) {
1925 char *name = GvNAME(sstr);
1926 STRLEN len = GvNAMELEN(sstr);
1927 sv_upgrade(dstr, SVt_PVGV);
1928 sv_magic(dstr, dstr, '*', name, len);
1929 GvSTASH(dstr) = GvSTASH(sstr);
1930 GvNAME(dstr) = savepvn(name, len);
1931 GvNAMELEN(dstr) = len;
1932 SvFAKE_on(dstr); /* can coerce to non-glob */
1934 /* ahem, death to those who redefine active sort subs */
1935 else if (curstack == sortstack
1936 && GvCV(dstr) && sortcop == CvSTART(GvCV(dstr)))
1937 croak("Can't redefine active sort subroutine %s",
1939 (void)SvOK_off(dstr);
1940 GvINTRO_off(dstr); /* one-shot flag */
1942 GvGP(dstr) = gp_ref(GvGP(sstr));
1944 if (curcop->cop_stash != GvSTASH(dstr))
1945 GvIMPORTED_on(dstr);
1952 if (SvGMAGICAL(sstr)) {
1954 if (SvTYPE(sstr) != stype) {
1955 stype = SvTYPE(sstr);
1956 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
1961 sv_upgrade(dstr, stype);
1964 sflags = SvFLAGS(sstr);
1966 if (sflags & SVf_ROK) {
1967 if (dtype >= SVt_PV) {
1968 if (dtype == SVt_PVGV) {
1970 SV *sref = SvREFCNT_inc(SvRV(sstr));
1972 int intro = GvINTRO(dstr);
1976 GvGP(dstr)->gp_refcnt--;
1977 GvINTRO_off(dstr); /* one-shot flag */
1978 Newz(602,gp, 1, GP);
1979 GvGP(dstr) = gp_ref(gp);
1980 GvSV(dstr) = NEWSV(72,0);
1981 GvLINE(dstr) = curcop->cop_line;
1982 GvEGV(dstr) = (GV*)dstr;
1985 switch (SvTYPE(sref)) {
1988 SAVESPTR(GvAV(dstr));
1990 dref = (SV*)GvAV(dstr);
1991 GvAV(dstr) = (AV*)sref;
1992 if (curcop->cop_stash != GvSTASH(dstr))
1993 GvIMPORTED_AV_on(dstr);
1997 SAVESPTR(GvHV(dstr));
1999 dref = (SV*)GvHV(dstr);
2000 GvHV(dstr) = (HV*)sref;
2001 if (curcop->cop_stash != GvSTASH(dstr))
2002 GvIMPORTED_HV_on(dstr);
2006 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2007 SvREFCNT_dec(GvCV(dstr));
2008 GvCV(dstr) = Nullcv;
2009 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2012 SAVESPTR(GvCV(dstr));
2015 dref = (SV*)GvCV(dstr);
2016 if (GvCV(dstr) != (CV*)sref) {
2017 CV* cv = GvCV(dstr);
2019 if (!GvCVGEN((GV*)dstr) &&
2020 (CvROOT(cv) || CvXSUB(cv)))
2022 /* ahem, death to those who redefine
2023 * active sort subs */
2024 if (curstack == sortstack &&
2025 sortcop == CvSTART(cv))
2027 "Can't redefine active sort subroutine %s",
2028 GvENAME((GV*)dstr));
2029 if (cv_const_sv(cv))
2030 warn("Constant subroutine %s redefined",
2031 GvENAME((GV*)dstr));
2033 warn("Subroutine %s redefined",
2034 GvENAME((GV*)dstr));
2036 cv_ckproto(cv, (GV*)dstr,
2037 SvPOK(sref) ? SvPVX(sref) : Nullch);
2039 GvCV(dstr) = (CV*)sref;
2040 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2041 GvASSUMECV_on(dstr);
2044 if (curcop->cop_stash != GvSTASH(dstr))
2045 GvIMPORTED_CV_on(dstr);
2049 SAVESPTR(GvIOp(dstr));
2051 dref = (SV*)GvIOp(dstr);
2052 GvIOp(dstr) = (IO*)sref;
2056 SAVESPTR(GvSV(dstr));
2058 dref = (SV*)GvSV(dstr);
2060 if (curcop->cop_stash != GvSTASH(dstr))
2061 GvIMPORTED_SV_on(dstr);
2072 (void)SvOOK_off(dstr); /* backoff */
2073 Safefree(SvPVX(dstr));
2074 SvLEN(dstr)=SvCUR(dstr)=0;
2077 (void)SvOK_off(dstr);
2078 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
2080 if (sflags & SVp_NOK) {
2082 SvNVX(dstr) = SvNVX(sstr);
2084 if (sflags & SVp_IOK) {
2085 (void)SvIOK_on(dstr);
2086 SvIVX(dstr) = SvIVX(sstr);
2089 if (SvAMAGIC(sstr)) {
2092 #endif /* OVERLOAD */
2094 else if (sflags & SVp_POK) {
2097 * Check to see if we can just swipe the string. If so, it's a
2098 * possible small lose on short strings, but a big win on long ones.
2099 * It might even be a win on short strings if SvPVX(dstr)
2100 * has to be allocated and SvPVX(sstr) has to be freed.
2103 if (SvTEMP(sstr) && /* slated for free anyway? */
2104 SvREFCNT(sstr) == 1 && /* and no other references to it? */
2105 !(sflags & SVf_OOK)) /* and not involved in OOK hack? */
2107 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
2109 SvFLAGS(dstr) &= ~SVf_OOK;
2110 Safefree(SvPVX(dstr) - SvIVX(dstr));
2113 Safefree(SvPVX(dstr));
2115 (void)SvPOK_only(dstr);
2116 SvPV_set(dstr, SvPVX(sstr));
2117 SvLEN_set(dstr, SvLEN(sstr));
2118 SvCUR_set(dstr, SvCUR(sstr));
2120 (void)SvOK_off(sstr);
2121 SvPV_set(sstr, Nullch);
2126 else { /* have to copy actual string */
2127 STRLEN len = SvCUR(sstr);
2129 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2130 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2131 SvCUR_set(dstr, len);
2132 *SvEND(dstr) = '\0';
2133 (void)SvPOK_only(dstr);
2136 if (sflags & SVp_NOK) {
2138 SvNVX(dstr) = SvNVX(sstr);
2140 if (sflags & SVp_IOK) {
2141 (void)SvIOK_on(dstr);
2142 SvIVX(dstr) = SvIVX(sstr);
2145 else if (sflags & SVp_NOK) {
2146 SvNVX(dstr) = SvNVX(sstr);
2147 (void)SvNOK_only(dstr);
2149 (void)SvIOK_on(dstr);
2150 SvIVX(dstr) = SvIVX(sstr);
2153 else if (sflags & SVp_IOK) {
2154 (void)SvIOK_only(dstr);
2155 SvIVX(dstr) = SvIVX(sstr);
2158 (void)SvOK_off(dstr);
2164 sv_setpvn(register SV *sv, register const char *ptr, register STRLEN len)
2166 assert(len >= 0); /* STRLEN is probably unsigned, so this may
2167 elicit a warning, but it won't hurt. */
2168 sv_check_thinkfirst(sv);
2173 if (SvTYPE(sv) >= SVt_PV) {
2174 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
2177 else if (!sv_upgrade(sv, SVt_PV))
2179 SvGROW(sv, len + 1);
2180 Move(ptr,SvPVX(sv),len,char);
2183 (void)SvPOK_only(sv); /* validate pointer */
2188 sv_setpv(register SV *sv, register const char *ptr)
2190 register STRLEN len;
2192 sv_check_thinkfirst(sv);
2198 if (SvTYPE(sv) >= SVt_PV) {
2199 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
2202 else if (!sv_upgrade(sv, SVt_PV))
2204 SvGROW(sv, len + 1);
2205 Move(ptr,SvPVX(sv),len+1,char);
2207 (void)SvPOK_only(sv); /* validate pointer */
2212 sv_usepvn(register SV *sv, register char *ptr, register STRLEN len)
2214 sv_check_thinkfirst(sv);
2215 if (!SvUPGRADE(sv, SVt_PV))
2222 Safefree(SvPVX(sv));
2223 Renew(ptr, len+1, char);
2226 SvLEN_set(sv, len+1);
2228 (void)SvPOK_only(sv); /* validate pointer */
2233 sv_check_thinkfirst(register SV *sv)
2235 if (SvTHINKFIRST(sv)) {
2236 if (SvREADONLY(sv)) {
2238 if (curcop != &compiling)
2247 sv_chop(register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
2251 register STRLEN delta;
2253 if (!ptr || !SvPOKp(sv))
2255 sv_check_thinkfirst(sv);
2256 if (SvTYPE(sv) < SVt_PVIV)
2257 sv_upgrade(sv,SVt_PVIV);
2261 SvFLAGS(sv) |= SVf_OOK;
2263 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK);
2264 delta = ptr - SvPVX(sv);
2272 sv_catpvn(register SV *sv, register char *ptr, register STRLEN len)
2277 junk = SvPV_force(sv, tlen);
2278 SvGROW(sv, tlen + len + 1);
2281 Move(ptr,SvPVX(sv)+tlen,len,char);
2284 (void)SvPOK_only(sv); /* validate pointer */
2289 sv_catsv(SV *dstr, register SV *sstr)
2295 if (s = SvPV(sstr, len))
2296 sv_catpvn(dstr,s,len);
2300 sv_catpv(register SV *sv, register char *ptr)
2302 register STRLEN len;
2308 junk = SvPV_force(sv, tlen);
2310 SvGROW(sv, tlen + len + 1);
2313 Move(ptr,SvPVX(sv)+tlen,len+1,char);
2315 (void)SvPOK_only(sv); /* validate pointer */
2335 sv_upgrade(sv, SVt_PV);
2336 SvGROW(sv, len + 1);
2341 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
2344 sv_magic(register SV *sv, SV *obj, int how, char *name, I32 namlen)
2348 if (SvREADONLY(sv)) {
2350 if (curcop != &compiling && !strchr("gBf", how))
2353 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
2354 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
2361 if (!SvUPGRADE(sv, SVt_PVMG))
2364 Newz(702,mg, 1, MAGIC);
2365 mg->mg_moremagic = SvMAGIC(sv);
2368 if (!obj || obj == sv || how == '#' || how == 'r')
2372 mg->mg_obj = SvREFCNT_inc(obj);
2373 mg->mg_flags |= MGf_REFCOUNTED;
2376 mg->mg_len = namlen;
2379 mg->mg_ptr = savepvn(name, namlen);
2380 else if (namlen == HEf_SVKEY)
2381 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
2385 mg->mg_virtual = &vtbl_sv;
2389 mg->mg_virtual = &vtbl_amagic;
2392 mg->mg_virtual = &vtbl_amagicelem;
2397 #endif /* OVERLOAD */
2399 mg->mg_virtual = &vtbl_bm;
2402 mg->mg_virtual = &vtbl_env;
2405 mg->mg_virtual = &vtbl_fm;
2408 mg->mg_virtual = &vtbl_envelem;
2411 mg->mg_virtual = &vtbl_mglob;
2414 mg->mg_virtual = &vtbl_isa;
2417 mg->mg_virtual = &vtbl_isaelem;
2420 mg->mg_virtual = &vtbl_nkeys;
2427 mg->mg_virtual = &vtbl_dbline;
2431 mg->mg_virtual = &vtbl_mutex;
2433 #endif /* USE_THREADS */
2434 #ifdef USE_LOCALE_COLLATE
2436 mg->mg_virtual = &vtbl_collxfrm;
2438 #endif /* USE_LOCALE_COLLATE */
2440 mg->mg_virtual = &vtbl_pack;
2444 mg->mg_virtual = &vtbl_packelem;
2447 mg->mg_virtual = &vtbl_regexp;
2450 mg->mg_virtual = &vtbl_sig;
2453 mg->mg_virtual = &vtbl_sigelem;
2456 mg->mg_virtual = &vtbl_taint;
2460 mg->mg_virtual = &vtbl_uvar;
2463 mg->mg_virtual = &vtbl_vec;
2466 mg->mg_virtual = &vtbl_substr;
2469 mg->mg_virtual = &vtbl_defelem;
2472 mg->mg_virtual = &vtbl_glob;
2475 mg->mg_virtual = &vtbl_arylen;
2478 mg->mg_virtual = &vtbl_pos;
2480 case '~': /* Reserved for use by extensions not perl internals. */
2481 /* Useful for attaching extension internal data to perl vars. */
2482 /* Note that multiple extensions may clash if magical scalars */
2483 /* etc holding private data from one are passed to another. */
2487 croak("Don't know how to handle magic of type '%c'", how);
2491 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
2495 sv_unmagic(SV *sv, int type)
2499 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
2502 for (mg = *mgp; mg; mg = *mgp) {
2503 if (mg->mg_type == type) {
2504 MGVTBL* vtbl = mg->mg_virtual;
2505 *mgp = mg->mg_moremagic;
2506 if (vtbl && (vtbl->svt_free != NULL))
2507 (VTBL->svt_free)(sv, mg);
2508 if (mg->mg_ptr && mg->mg_type != 'g')
2509 if (mg->mg_len >= 0)
2510 Safefree(mg->mg_ptr);
2511 else if (mg->mg_len == HEf_SVKEY)
2512 SvREFCNT_dec((SV*)mg->mg_ptr);
2513 if (mg->mg_flags & MGf_REFCOUNTED)
2514 SvREFCNT_dec(mg->mg_obj);
2518 mgp = &mg->mg_moremagic;
2522 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
2529 sv_insert(SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
2533 register char *midend;
2534 register char *bigend;
2538 croak("Can't modify non-existent substring");
2539 SvPV_force(bigstr, na);
2541 i = littlelen - len;
2542 if (i > 0) { /* string might grow */
2543 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
2544 mid = big + offset + len;
2545 midend = bigend = big + SvCUR(bigstr);
2548 while (midend > mid) /* shove everything down */
2549 *--bigend = *--midend;
2550 Move(little,big+offset,littlelen,char);
2556 Move(little,SvPVX(bigstr)+offset,len,char);
2561 big = SvPVX(bigstr);
2564 bigend = big + SvCUR(bigstr);
2566 if (midend > bigend)
2567 croak("panic: sv_insert");
2569 if (mid - big > bigend - midend) { /* faster to shorten from end */
2571 Move(little, mid, littlelen,char);
2574 i = bigend - midend;
2576 Move(midend, mid, i,char);
2580 SvCUR_set(bigstr, mid - big);
2583 else if (i = mid - big) { /* faster from front */
2584 midend -= littlelen;
2586 sv_chop(bigstr,midend-i);
2591 Move(little, mid, littlelen,char);
2593 else if (littlelen) {
2594 midend -= littlelen;
2595 sv_chop(bigstr,midend);
2596 Move(little,midend,littlelen,char);
2599 sv_chop(bigstr,midend);
2604 /* make sv point to what nstr did */
2607 sv_replace(register SV *sv, register SV *nsv)
2609 U32 refcnt = SvREFCNT(sv);
2610 sv_check_thinkfirst(sv);
2611 if (SvREFCNT(nsv) != 1)
2612 warn("Reference miscount in sv_replace()");
2613 if (SvMAGICAL(sv)) {
2617 sv_upgrade(nsv, SVt_PVMG);
2618 SvMAGIC(nsv) = SvMAGIC(sv);
2619 SvFLAGS(nsv) |= SvMAGICAL(sv);
2625 assert(!SvREFCNT(sv));
2626 StructCopy(nsv,sv,SV);
2627 SvREFCNT(sv) = refcnt;
2628 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
2633 sv_clear(register SV *sv)
2636 assert(SvREFCNT(sv) == 0);
2640 if (defstash) { /* Still have a symbol table? */
2645 SAVEFREESV(SvSTASH(sv));
2647 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
2651 Zero(&tmpRef, 1, SV);
2652 sv_upgrade(&tmpRef, SVt_RV);
2653 SvRV(&tmpRef) = SvREFCNT_inc(sv);
2655 SvREFCNT(&tmpRef) = 1; /* Fake, but otherwise
2656 creating+destructing a ref
2657 leads to disaster. */
2663 perl_call_sv((SV*)GvCV(destructor),
2664 G_DISCARD|G_EVAL|G_KEEPERR);
2665 del_XRV(SvANY(&tmpRef));
2672 SvREFCNT_dec(SvSTASH(sv));
2674 SvOBJECT_off(sv); /* Curse the object. */
2675 if (SvTYPE(sv) != SVt_PVIO)
2676 --sv_objcount; /* XXX Might want something more general */
2680 croak("DESTROY created new reference to dead object");
2681 /* DESTROY gave object new lease on life */
2685 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
2687 switch (SvTYPE(sv)) {
2689 if (IoIFP(sv) != PerlIO_stdin() &&
2690 IoIFP(sv) != PerlIO_stdout() &&
2691 IoIFP(sv) != PerlIO_stderr())
2693 Safefree(IoTOP_NAME(sv));
2694 Safefree(IoFMT_NAME(sv));
2695 Safefree(IoBOTTOM_NAME(sv));
2711 Safefree(GvNAME(sv));
2718 (void)SvOOK_off(sv);
2723 SvREFCNT_dec(SvRV(sv));
2724 else if (SvPVX(sv) && SvLEN(sv))
2725 Safefree(SvPVX(sv));
2735 switch (SvTYPE(sv)) {
2751 del_XPVIV(SvANY(sv));
2754 del_XPVNV(SvANY(sv));
2757 del_XPVMG(SvANY(sv));
2760 del_XPVLV(SvANY(sv));
2763 del_XPVAV(SvANY(sv));
2766 del_XPVHV(SvANY(sv));
2769 del_XPVCV(SvANY(sv));
2772 del_XPVGV(SvANY(sv));
2775 del_XPVBM(SvANY(sv));
2778 del_XPVFM(SvANY(sv));
2781 del_XPVIO(SvANY(sv));
2784 SvFLAGS(sv) &= SVf_BREAK;
2785 SvFLAGS(sv) |= SVTYPEMASK;
2801 if (SvREADONLY(sv)) {
2802 if (sv == &sv_undef || sv == &sv_yes || sv == &sv_no)
2805 if (SvREFCNT(sv) == 0) {
2806 if (SvFLAGS(sv) & SVf_BREAK)
2808 if (in_clean_all) /* All is fair */
2810 warn("Attempt to free unreferenced scalar");
2813 if (--SvREFCNT(sv) > 0)
2817 warn("Attempt to free temp prematurely: %s", SvPEEK(sv));
2827 sv_len(register SV *sv)
2836 len = mg_length(sv);
2838 junk = SvPV(sv, len);
2843 sv_eq(register SV *str1, register SV *str2)
2855 pv1 = SvPV(str1, cur1);
2860 pv2 = SvPV(str2, cur2);
2865 return memEQ(pv1, pv2, cur1);
2869 sv_cmp(register SV *str1, register SV *str2)
2872 char *pv1 = str1 ? SvPV(str1, cur1) : (char *) NULL;
2874 char *pv2 = str2 ? SvPV(str2, cur2) : (char *) NULL;
2878 return cur2 ? -1 : 0;
2883 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
2886 return retval < 0 ? -1 : 1;
2891 return cur1 < cur2 ? -1 : 1;
2895 sv_cmp_locale(register SV *sv1, register SV *sv2)
2897 #ifdef USE_LOCALE_COLLATE
2903 if (collation_standard)
2907 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
2909 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
2911 if (!pv1 || !len1) {
2922 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
2925 return retval < 0 ? -1 : 1;
2928 * When the result of collation is equality, that doesn't mean
2929 * that there are no differences -- some locales exclude some
2930 * characters from consideration. So to avoid false equalities,
2931 * we use the raw string as a tiebreaker.
2937 #endif /* USE_LOCALE_COLLATE */
2939 return sv_cmp(sv1, sv2);
2942 #ifdef USE_LOCALE_COLLATE
2944 * Any scalar variable may carry an 'o' magic that contains the
2945 * scalar data of the variable transformed to such a format that
2946 * a normal memory comparison can be used to compare the data
2947 * according to the locale settings.
2950 sv_collxfrm(SV *sv, STRLEN *nxp)
2954 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
2955 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != collation_ix) {
2960 Safefree(mg->mg_ptr);
2962 if ((xf = mem_collxfrm(s, len, &xlen))) {
2963 if (SvREADONLY(sv)) {
2966 return xf + sizeof(collation_ix);
2969 sv_magic(sv, 0, 'o', 0, 0);
2970 mg = mg_find(sv, 'o');
2983 if (mg && mg->mg_ptr) {
2985 return mg->mg_ptr + sizeof(collation_ix);
2993 #endif /* USE_LOCALE_COLLATE */
2996 sv_gets(register SV *sv, register PerlIO *fp, I32 append)
3001 register STDCHAR rslast;
3002 register STDCHAR *bp;
3006 sv_check_thinkfirst(sv);
3007 if (!SvUPGRADE(sv, SVt_PV))
3015 else if (RsPARA(rs)) {
3020 rsptr = SvPV(rs, rslen);
3021 rslast = rslen ? rsptr[rslen - 1] : '\0';
3023 if (RsPARA(rs)) { /* have to do this both before and after */
3024 do { /* to make sure file boundaries work right */
3027 i = PerlIO_getc(fp);
3031 PerlIO_ungetc(fp,i);
3037 /* See if we know enough about I/O mechanism to cheat it ! */
3039 /* This used to be #ifdef test - it is made run-time test for ease
3040 of abstracting out stdio interface. One call should be cheap
3041 enough here - and may even be a macro allowing compile
3045 if (PerlIO_fast_gets(fp)) {
3048 * We're going to steal some values from the stdio struct
3049 * and put EVERYTHING in the innermost loop into registers.
3051 register STDCHAR *ptr;
3055 #if defined(VMS) && defined(PERLIO_IS_STDIO)
3056 /* An ungetc()d char is handled separately from the regular
3057 * buffer, so we getc() it back out and stuff it in the buffer.
3059 i = PerlIO_getc(fp);
3060 if (i == EOF) return 0;
3061 *(--((*fp)->_ptr)) = (unsigned char) i;
3065 /* Here is some breathtakingly efficient cheating */
3067 cnt = PerlIO_get_cnt(fp); /* get count into register */
3068 (void)SvPOK_only(sv); /* validate pointer */
3069 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
3070 if (cnt > 80 && SvLEN(sv) > append) {
3071 shortbuffered = cnt - SvLEN(sv) + append + 1;
3072 cnt -= shortbuffered;
3076 /* remember that cnt can be negative */
3077 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
3082 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
3083 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
3084 DEBUG_P(PerlIO_printf(Perl_debug_log,
3085 "Screamer: entering, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt));
3086 DEBUG_P(PerlIO_printf(Perl_debug_log,
3087 "Screamer: entering: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n",
3088 (long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp),
3089 (long)(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
3094 while (cnt > 0) { /* this | eat */
3096 if ((*bp++ = *ptr++) == rslast) /* really | dust */
3097 goto thats_all_folks; /* screams | sed :-) */
3101 Copy(ptr, bp, cnt, char); /* this | eat */
3102 bp += cnt; /* screams | dust */
3103 ptr += cnt; /* louder | sed :-) */
3108 if (shortbuffered) { /* oh well, must extend */
3109 cnt = shortbuffered;
3111 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
3113 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
3114 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
3118 DEBUG_P(PerlIO_printf(Perl_debug_log,
3119 "Screamer: going to getc, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt));
3120 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
3121 DEBUG_P(PerlIO_printf(Perl_debug_log,
3122 "Screamer: pre: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n",
3123 (long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp),
3124 (long)(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
3125 /* This used to call 'filbuf' in stdio form, but as that behaves like
3126 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
3127 another abstraction. */
3128 i = PerlIO_getc(fp); /* get more characters */
3129 DEBUG_P(PerlIO_printf(Perl_debug_log,
3130 "Screamer: post: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n",
3131 (long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp),
3132 (long)(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
3133 cnt = PerlIO_get_cnt(fp);
3134 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
3135 DEBUG_P(PerlIO_printf(Perl_debug_log,
3136 "Screamer: after getc, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt));
3138 if (i == EOF) /* all done for ever? */
3139 goto thats_really_all_folks;
3141 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
3143 SvGROW(sv, bpx + cnt + 2);
3144 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
3146 *bp++ = i; /* store character from PerlIO_getc */
3148 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
3149 goto thats_all_folks;
3153 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
3154 memNE((char*)bp - rslen, rsptr, rslen))
3155 goto screamer; /* go back to the fray */
3156 thats_really_all_folks:
3158 cnt += shortbuffered;
3159 DEBUG_P(PerlIO_printf(Perl_debug_log,
3160 "Screamer: quitting, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt));
3161 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
3162 DEBUG_P(PerlIO_printf(Perl_debug_log,
3163 "Screamer: end: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n",
3164 (long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp),
3165 (long)(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
3167 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
3168 DEBUG_P(PerlIO_printf(Perl_debug_log,
3169 "Screamer: done, len=%ld, string=|%.*s|\n",
3170 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
3174 /*The big, slow, and stupid way */
3179 register STDCHAR *bpe = buf + sizeof(buf);
3181 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
3182 ; /* keep reading */
3186 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
3187 /* Accomodate broken VAXC compiler, which applies U8 cast to
3188 * both args of ?: operator, causing EOF to change into 255
3190 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
3194 sv_catpvn(sv, (char *) buf, cnt);
3196 sv_setpvn(sv, (char *) buf, cnt);
3198 if (i != EOF && /* joy */
3200 SvCUR(sv) < rslen ||
3201 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
3205 * If we're reading from a TTY and we get a short read,
3206 * indicating that the user hit his EOF character, we need
3207 * to notice it now, because if we try to read from the TTY
3208 * again, the EOF condition will disappear.
3210 * The comparison of cnt to sizeof(buf) is an optimization
3211 * that prevents unnecessary calls to feof().
3215 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
3220 if (RsPARA(rs)) { /* have to do this both before and after */
3221 while (i != EOF) { /* to make sure file boundaries work right */
3222 i = PerlIO_getc(fp);
3224 PerlIO_ungetc(fp,i);
3231 win32_strip_return(sv);
3234 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
3239 sv_inc(register SV *sv)
3246 if (SvTHINKFIRST(sv)) {
3247 if (SvREADONLY(sv)) {
3249 if (curcop != &compiling)
3254 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) return;
3255 #endif /* OVERLOAD */
3261 flags = SvFLAGS(sv);
3262 if (flags & SVp_NOK) {
3263 (void)SvNOK_only(sv);
3267 if (flags & SVp_IOK) {
3268 if (SvIVX(sv) == IV_MAX)
3269 sv_setnv(sv, (double)IV_MAX + 1.0);
3271 (void)SvIOK_only(sv);
3276 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
3277 if ((flags & SVTYPEMASK) < SVt_PVNV)
3278 sv_upgrade(sv, SVt_NV);
3280 (void)SvNOK_only(sv);
3284 while (isALPHA(*d)) d++;
3285 while (isDIGIT(*d)) d++;
3287 SET_NUMERIC_STANDARD();
3288 sv_setnv(sv,atof(SvPVX(sv)) + 1.0); /* punt */
3292 while (d >= SvPVX(sv)) {
3302 *(d--) -= 'z' - 'a' + 1;
3305 /* oh,oh, the number grew */
3306 SvGROW(sv, SvCUR(sv) + 2);
3308 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
3317 sv_dec(register SV *sv)
3323 if (SvTHINKFIRST(sv)) {
3324 if (SvREADONLY(sv)) {
3326 if (curcop != &compiling)
3331 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) return;
3332 #endif /* OVERLOAD */
3338 flags = SvFLAGS(sv);
3339 if (flags & SVp_NOK) {
3341 (void)SvNOK_only(sv);
3344 if (flags & SVp_IOK) {
3345 if (SvIVX(sv) == IV_MIN)
3346 sv_setnv(sv, (double)IV_MIN - 1.0);
3348 (void)SvIOK_only(sv);
3353 if (!(flags & SVp_POK)) {
3354 if ((flags & SVTYPEMASK) < SVt_PVNV)
3355 sv_upgrade(sv, SVt_NV);
3357 (void)SvNOK_only(sv);
3360 SET_NUMERIC_STANDARD();
3361 sv_setnv(sv,atof(SvPVX(sv)) - 1.0); /* punt */
3364 /* Make a string that will exist for the duration of the expression
3365 * evaluation. Actually, it may have to last longer than that, but
3366 * hopefully we won't free it until it has been assigned to a
3367 * permanent location. */
3373 tmps_max += (tmps_max < 512) ? 128 : 512;
3374 Renew(tmps_stack, tmps_max, SV*);
3378 sv_mortalcopy(SV *oldstr)
3387 sv_setsv(sv,oldstr);
3388 if (++tmps_ix >= tmps_max)
3390 tmps_stack[tmps_ix] = sv;
3404 SvFLAGS(sv) = SVs_TEMP;
3405 if (++tmps_ix >= tmps_max)
3407 tmps_stack[tmps_ix] = sv;
3411 /* same thing without the copying */
3414 sv_2mortal(register SV *sv)
3419 if (SvREADONLY(sv) && curcop != &compiling)
3421 if (++tmps_ix >= tmps_max)
3423 tmps_stack[tmps_ix] = sv;
3429 newSVpv(char *s, STRLEN len)
3439 sv_setpvn(sv,s,len);
3445 newSVpvf(const char* pat, ...)
3449 newSVpvf(pat, va_alist)
3462 va_start(args, pat);
3466 sv_vsetpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
3508 sv_upgrade(sv, SVt_RV);
3510 SvRV(sv) = SvREFCNT_inc(tmpRef);
3518 Perl_newRV_noinc(SV *tmpRef)
3523 SvREFCNT_dec(tmpRef);
3527 /* make an exact duplicate of old */
3530 newSVsv(register SV *old)
3536 if (SvTYPE(old) == SVTYPEMASK) {
3537 warn("semi-panic: attempt to dup freed string");
3555 sv_reset(register char *s, HV *stash)
3565 if (!*s) { /* reset ?? searches */
3566 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
3567 pm->op_pmflags &= ~PMf_USED;
3572 /* reset variables */
3574 if (!HvARRAY(stash))
3577 Zero(todo, 256, char);
3584 for ( ; i <= max; i++) {
3587 for (i = 0; i <= (I32) HvMAX(stash); i++) {
3588 for (entry = HvARRAY(stash)[i];
3590 entry = HeNEXT(entry)) {
3591 if (!todo[(U8)*HeKEY(entry)])
3593 gv = (GV*)HeVAL(entry);
3596 if (SvTYPE(sv) >= SVt_PV) {
3598 if (SvPVX(sv) != Nullch)
3605 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
3607 #ifndef VMS /* VMS has no environ array */
3609 environ[0] = Nullch;
3623 switch (SvTYPE(sv)) {
3631 croak("Bad filehandle: %s", GvNAME(gv));
3635 croak(no_usym, "filehandle");
3637 return sv_2io(SvRV(sv));
3638 gv = gv_fetchpv(SvPV(sv,na), FALSE, SVt_PVIO);
3644 croak("Bad filehandle: %s", SvPV(sv,na));
3651 sv_2cv(SV *sv, HV **st, GV **gvp, I32 lref)
3657 return *gvp = Nullgv, Nullcv;
3658 switch (SvTYPE(sv)) {
3678 if (SvTYPE(cv) != SVt_PVCV)
3679 croak("Not a subroutine reference");
3687 gv = gv_fetchpv(SvPV(sv, na), lref, SVt_PVCV);
3693 if (lref && !GvCVu(gv)) {
3696 tmpsv = NEWSV(704,0);
3697 gv_efullname3(tmpsv, gv, Nullch);
3698 newSUB(start_subparse(FALSE, 0),
3699 newSVOP(OP_CONST, 0, tmpsv),
3704 croak("Unable to create sub named \"%s\"", SvPV(sv,na));
3711 sv_true(register SV *sv)
3718 if ((tXpv = (XPV*)SvANY(sv)) &&
3719 (*tXpv->xpv_pv > '0' ||
3720 tXpv->xpv_cur > 1 ||
3721 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
3728 return SvIVX(sv) != 0;
3731 return SvNVX(sv) != 0.0;
3733 return sv_2bool(sv);
3739 sv_iv(register SV *sv)
3747 sv_uv(register SV *sv)
3755 sv_nv(register SV *sv)
3763 sv_pvn(SV *sv, STRLEN *lp)
3769 return sv_2pv(sv, lp);
3773 sv_pvn_force(SV *sv, STRLEN *lp)
3777 if (SvREADONLY(sv)) {
3779 if (curcop != &compiling)
3787 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
3788 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) {
3795 croak("Can't coerce %s to string in %s", sv_reftype(sv,0),
3796 op_name[op->op_type]);
3801 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
3806 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
3807 SvGROW(sv, len + 1);
3808 Move(s,SvPVX(sv),len,char);
3813 SvPOK_on(sv); /* validate pointer */
3815 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2pv(%s)\n",
3816 (unsigned long)sv,SvPVX(sv)));
3823 sv_reftype(SV *sv, int ob)
3825 if (ob && SvOBJECT(sv))
3826 return HvNAME(SvSTASH(sv));
3828 switch (SvTYPE(sv)) {
3842 case SVt_PVLV: return "LVALUE";
3843 case SVt_PVAV: return "ARRAY";
3844 case SVt_PVHV: return "HASH";
3845 case SVt_PVCV: return "CODE";
3846 case SVt_PVGV: return "GLOB";
3847 case SVt_PVFM: return "FORMLINE";
3848 default: return "UNKNOWN";
3869 sv_isa(SV *sv, char *name)
3881 return strEQ(HvNAME(SvSTASH(sv)), name);
3885 newSVrv(SV *rv, char *classname)
3895 sv_check_thinkfirst(rv);
3898 #endif /* OVERLOAD */
3900 if (SvTYPE(rv) < SVt_RV)
3901 sv_upgrade(rv, SVt_RV);
3904 SvRV(rv) = SvREFCNT_inc(sv);
3908 HV* stash = gv_stashpv(classname, TRUE);
3909 (void)sv_bless(rv, stash);
3915 sv_setref_pv(SV *rv, char *classname, void *pv)
3918 sv_setsv(rv, &sv_undef);
3922 sv_setiv(newSVrv(rv,classname), (IV)pv);
3927 sv_setref_iv(SV *rv, char *classname, IV iv)
3929 sv_setiv(newSVrv(rv,classname), iv);
3934 sv_setref_nv(SV *rv, char *classname, double nv)
3936 sv_setnv(newSVrv(rv,classname), nv);
3941 sv_setref_pvn(SV *rv, char *classname, char *pv, I32 n)
3943 sv_setpvn(newSVrv(rv,classname), pv, n);
3948 sv_bless(SV *sv, HV *stash)
3953 croak("Can't bless non-reference value");
3955 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
3956 if (SvREADONLY(tmpRef))
3958 if (SvOBJECT(tmpRef)) {
3959 if (SvTYPE(tmpRef) != SVt_PVIO)
3961 SvREFCNT_dec(SvSTASH(tmpRef));
3964 SvOBJECT_on(tmpRef);
3965 if (SvTYPE(tmpRef) != SVt_PVIO)
3967 (void)SvUPGRADE(tmpRef, SVt_PVMG);
3968 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
3975 #endif /* OVERLOAD */
3983 assert(SvTYPE(sv) == SVt_PVGV);
3987 sv_unmagic(sv, '*');
3988 Safefree(GvNAME(sv));
3990 SvFLAGS(sv) &= ~SVTYPEMASK;
3991 SvFLAGS(sv) |= SVt_PVMG;
4001 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
4004 sv_2mortal(rv); /* Schedule for freeing later */
4010 sv_magic((sv), Nullsv, 't', Nullch, 0);
4016 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
4017 MAGIC *mg = mg_find(sv, 't');
4026 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
4027 MAGIC *mg = mg_find(sv, 't');
4028 if (mg && ((mg->mg_len & 1) || (mg->mg_len & 2) && mg->mg_obj == sv))
4035 sv_setpviv(SV *sv, IV iv)
4038 char buf[TYPE_DIGITS(UV)];
4039 char *ptr = buf + sizeof(buf);
4044 sv_setpvn(sv, "", 0);
4053 *--ptr = '0' + (uv % 10);
4055 len = (buf + sizeof(buf)) - ptr;
4056 /* taking advantage of SvCUR(sv) == 0 */
4057 SvGROW(sv, sign + len + 1);
4061 memcpy(p, ptr, len);
4064 SvCUR(sv) = p - SvPVX(sv);
4069 sv_setpvf(SV *sv, const char* pat, ...)
4073 sv_setpvf(sv, pat, va_alist)
4081 va_start(args, pat);
4085 sv_vsetpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
4091 sv_catpvf(SV *sv, const char* pat, ...)
4095 sv_catpvf(sv, pat, va_alist)
4103 va_start(args, pat);
4107 sv_vcatpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
4112 sv_vsetpvfn(SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *used_locale)
4114 sv_setpvn(sv, "", 0);
4115 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, used_locale);
4119 sv_vcatpvfn(SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *used_locale)
4127 static char nullstr[] = "(null)";
4129 /* no matter what, this is a string now */
4130 (void)SvPV_force(sv, origlen);
4132 /* special-case "", "%s", and "%_" */
4135 if (patlen == 2 && pat[0] == '%') {
4139 char *s = va_arg(*args, char*);
4140 sv_catpv(sv, s ? s : nullstr);
4142 else if (svix < svmax)
4143 sv_catsv(sv, *svargs);
4147 sv_catsv(sv, va_arg(*args, SV*));
4150 /* See comment on '_' below */
4155 patend = (char*)pat + patlen;
4156 for (p = (char*)pat; p < patend; p = q) {
4164 bool has_precis = FALSE;
4168 STRLEN esignlen = 0;
4170 char *eptr = Nullch;
4172 char ebuf[TYPE_DIGITS(int) * 2 + 16]; /* large enough for "%#.#f" */
4174 static char *efloatbuf = Nullch;
4175 static STRLEN efloatsize = 0;
4187 for (q = p; q < patend && *q != '%'; ++q) ;
4189 sv_catpvn(sv, p, q - p);
4227 case '1': case '2': case '3':
4228 case '4': case '5': case '6':
4229 case '7': case '8': case '9':
4232 width = width * 10 + (*q++ - '0');
4237 i = va_arg(*args, int);
4239 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
4241 width = (i < 0) ? -i : i;
4252 i = va_arg(*args, int);
4254 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
4255 precis = (i < 0) ? 0 : i;
4261 precis = precis * 10 + (*q++ - '0');
4270 #if 0 /* when quads have better support within Perl */
4271 if (*(q + 1) == 'l') {
4297 c = va_arg(*args, int);
4299 c = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
4306 eptr = va_arg(*args, char*);
4308 elen = strlen(eptr);
4311 elen = sizeof nullstr - 1;
4314 else if (svix < svmax)
4315 eptr = SvPVx(svargs[svix++], elen);
4320 * The "%_" hack might have to be changed someday,
4321 * if ISO or ANSI decide to use '_' for something.
4322 * So we keep it hidden from users' code.
4326 eptr = SvPVx(va_arg(*args, SV*), elen);
4329 if (has_precis && elen > precis)
4337 uv = (UV)va_arg(*args, void*);
4339 uv = (svix < svmax) ? (UV)svargs[svix++] : 0;
4350 case 'h': iv = (short)va_arg(*args, int); break;
4351 default: iv = va_arg(*args, int); break;
4352 case 'l': iv = va_arg(*args, long); break;
4353 case 'V': iv = va_arg(*args, IV); break;
4357 iv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
4359 case 'h': iv = (short)iv; break;
4360 default: iv = (int)iv; break;
4361 case 'l': iv = (long)iv; break;
4368 esignbuf[esignlen++] = plus;
4372 esignbuf[esignlen++] = '-';
4398 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
4399 default: uv = va_arg(*args, unsigned); break;
4400 case 'l': uv = va_arg(*args, unsigned long); break;
4401 case 'V': uv = va_arg(*args, UV); break;
4405 uv = (svix < svmax) ? SvUVx(svargs[svix++]) : 0;
4407 case 'h': uv = (unsigned short)uv; break;
4408 default: uv = (unsigned)uv; break;
4409 case 'l': uv = (unsigned long)uv; break;
4415 eptr = ebuf + sizeof ebuf;
4419 p = (c == 'X') ? "0123456789ABCDEF" : "0123456789abcdef";
4425 esignbuf[esignlen++] = '0';
4426 esignbuf[esignlen++] = c; /* 'x' or 'X' */
4432 *--eptr = '0' + dig;
4434 if (alt && *eptr != '0')
4437 default: /* it had better be ten or less */
4440 *--eptr = '0' + dig;
4441 } while (uv /= base);
4444 elen = (ebuf + sizeof ebuf) - eptr;
4445 if (has_precis && precis > elen)
4446 zeros = precis - elen;
4449 /* FLOATING POINT */
4452 c = 'f'; /* maybe %F isn't supported here */
4458 /* This is evil, but floating point is even more evil */
4461 nv = va_arg(*args, double);
4463 nv = (svix < svmax) ? SvNVx(svargs[svix++]) : 0.0;
4466 if (c != 'e' && c != 'E') {
4468 (void)frexp(nv, &i);
4469 if (i == PERL_INT_MIN)
4470 die("panic: frexp");
4472 need = BIT_DIGITS(i);
4474 need += has_precis ? precis : 6; /* known default */
4478 need += 20; /* fudge factor */
4479 if (efloatsize < need) {
4480 Safefree(efloatbuf);
4481 efloatsize = need + 20; /* more fudge */
4482 New(906, efloatbuf, efloatsize, char);
4485 eptr = ebuf + sizeof ebuf;
4490 do { *--eptr = '0' + (base % 10); } while (base /= 10);
4495 do { *--eptr = '0' + (base % 10); } while (base /= 10);
4507 (void)sprintf(efloatbuf, eptr, nv);
4510 elen = strlen(efloatbuf);
4514 * User-defined locales may include arbitrary characters.
4515 * And, unfortunately, some system may alloc the "C" locale
4516 * to be overridden by a malicious user.
4519 *used_locale = TRUE;
4520 #endif /* LC_NUMERIC */
4527 i = SvCUR(sv) - origlen;
4530 case 'h': *(va_arg(*args, short*)) = i; break;
4531 default: *(va_arg(*args, int*)) = i; break;
4532 case 'l': *(va_arg(*args, long*)) = i; break;
4533 case 'V': *(va_arg(*args, IV*)) = i; break;
4536 else if (svix < svmax)
4537 sv_setuv(svargs[svix++], (UV)i);
4538 continue; /* not "break" */
4544 if (!args && dowarn &&
4545 (op->op_type == OP_PRTF || op->op_type == OP_SPRINTF)) {
4546 SV *msg = sv_newmortal();
4547 sv_setpvf(msg, "Invalid conversion in %s: ",
4548 (op->op_type == OP_PRTF) ? "printf" : "sprintf");
4550 sv_catpvf(msg, isPRINT(c) ? "\"%%%c\"" : "\"%%\\%03o\"",
4553 sv_catpv(msg, "end of string");
4554 warn("%_", msg); /* yes, this is reentrant */
4557 /* output mangled stuff ... */
4563 /* ... right here, because formatting flags should not apply */
4564 SvGROW(sv, SvCUR(sv) + elen + 1);
4566 memcpy(p, eptr, elen);
4569 SvCUR(sv) = p - SvPVX(sv);
4570 continue; /* not "break" */
4573 have = esignlen + zeros + elen;
4574 need = (have > width ? have : width);
4577 SvGROW(sv, SvCUR(sv) + need + 1);
4579 if (esignlen && fill == '0') {
4580 for (i = 0; i < esignlen; i++)
4584 memset(p, fill, gap);
4587 if (esignlen && fill != '0') {
4588 for (i = 0; i < esignlen; i++)
4592 for (i = zeros; i; i--)
4596 memcpy(p, eptr, elen);
4600 memset(p, ' ', gap);
4604 SvCUR(sv) = p - SvPVX(sv);
4612 SV *d = sv_newmortal();
4618 PerlIO_printf(Perl_debug_log, "SV = 0\n");
4622 flags = SvFLAGS(sv);
4625 sv_setpvf(d, "(0x%lx)\n REFCNT = %ld\n FLAGS = (",
4626 (unsigned long)SvANY(sv), (long)SvREFCNT(sv));
4627 if (flags & SVs_PADBUSY) sv_catpv(d, "PADBUSY,");
4628 if (flags & SVs_PADTMP) sv_catpv(d, "PADTMP,");
4629 if (flags & SVs_PADMY) sv_catpv(d, "PADMY,");
4630 if (flags & SVs_TEMP) sv_catpv(d, "TEMP,");
4631 if (flags & SVs_OBJECT) sv_catpv(d, "OBJECT,");
4632 if (flags & SVs_GMG) sv_catpv(d, "GMG,");
4633 if (flags & SVs_SMG) sv_catpv(d, "SMG,");
4634 if (flags & SVs_RMG) sv_catpv(d, "RMG,");
4636 if (flags & SVf_IOK) sv_catpv(d, "IOK,");
4637 if (flags & SVf_NOK) sv_catpv(d, "NOK,");
4638 if (flags & SVf_POK) sv_catpv(d, "POK,");
4639 if (flags & SVf_ROK) sv_catpv(d, "ROK,");
4640 if (flags & SVf_OOK) sv_catpv(d, "OOK,");
4641 if (flags & SVf_FAKE) sv_catpv(d, "FAKE,");
4642 if (flags & SVf_READONLY) sv_catpv(d, "READONLY,");
4645 if (flags & SVf_AMAGIC) sv_catpv(d, "OVERLOAD,");
4646 #endif /* OVERLOAD */
4647 if (flags & SVp_IOK) sv_catpv(d, "pIOK,");
4648 if (flags & SVp_NOK) sv_catpv(d, "pNOK,");
4649 if (flags & SVp_POK) sv_catpv(d, "pPOK,");
4650 if (flags & SVp_SCREAM) sv_catpv(d, "SCREAM,");
4655 if (CvANON(sv)) sv_catpv(d, "ANON,");
4656 if (CvUNIQUE(sv)) sv_catpv(d, "UNIQUE,");
4657 if (CvCLONE(sv)) sv_catpv(d, "CLONE,");
4658 if (CvCLONED(sv)) sv_catpv(d, "CLONED,");
4659 if (CvNODEBUG(sv)) sv_catpv(d, "NODEBUG,");
4662 if (HvSHAREKEYS(sv)) sv_catpv(d, "SHAREKEYS,");
4663 if (HvLAZYDEL(sv)) sv_catpv(d, "LAZYDEL,");
4666 if (GvINTRO(sv)) sv_catpv(d, "INTRO,");
4667 if (GvMULTI(sv)) sv_catpv(d, "MULTI,");
4668 if (GvASSUMECV(sv)) sv_catpv(d, "ASSUMECV,");
4669 if (GvIMPORTED(sv)) {
4670 sv_catpv(d, "IMPORT");
4671 if (GvIMPORTED(sv) == GVf_IMPORTED)
4672 sv_catpv(d, "ALL,");
4675 if (GvIMPORTED_SV(sv)) sv_catpv(d, " SV");
4676 if (GvIMPORTED_AV(sv)) sv_catpv(d, " AV");
4677 if (GvIMPORTED_HV(sv)) sv_catpv(d, " HV");
4678 if (GvIMPORTED_CV(sv)) sv_catpv(d, " CV");
4683 if (SvTAIL(sv)) sv_catpv(d, "TAIL,");
4684 if (SvCOMPILED(sv)) sv_catpv(d, "COMPILED,");
4688 if (*(SvEND(d) - 1) == ',')
4689 SvPVX(d)[--SvCUR(d)] = '\0';
4693 PerlIO_printf(Perl_debug_log, "SV = ");
4696 PerlIO_printf(Perl_debug_log, "NULL%s\n", s);
4699 PerlIO_printf(Perl_debug_log, "IV%s\n", s);
4702 PerlIO_printf(Perl_debug_log, "NV%s\n", s);
4705 PerlIO_printf(Perl_debug_log, "RV%s\n", s);
4708 PerlIO_printf(Perl_debug_log, "PV%s\n", s);
4711 PerlIO_printf(Perl_debug_log, "PVIV%s\n", s);
4714 PerlIO_printf(Perl_debug_log, "PVNV%s\n", s);
4717 PerlIO_printf(Perl_debug_log, "PVBM%s\n", s);
4720 PerlIO_printf(Perl_debug_log, "PVMG%s\n", s);
4723 PerlIO_printf(Perl_debug_log, "PVLV%s\n", s);
4726 PerlIO_printf(Perl_debug_log, "PVAV%s\n", s);
4729 PerlIO_printf(Perl_debug_log, "PVHV%s\n", s);
4732 PerlIO_printf(Perl_debug_log, "PVCV%s\n", s);
4735 PerlIO_printf(Perl_debug_log, "PVGV%s\n", s);
4738 PerlIO_printf(Perl_debug_log, "PVFM%s\n", s);
4741 PerlIO_printf(Perl_debug_log, "PVIO%s\n", s);
4744 PerlIO_printf(Perl_debug_log, "UNKNOWN%s\n", s);
4747 if (type >= SVt_PVIV || type == SVt_IV)
4748 PerlIO_printf(Perl_debug_log, " IV = %ld\n", (long)SvIVX(sv));
4749 if (type >= SVt_PVNV || type == SVt_NV) {
4750 SET_NUMERIC_STANDARD();
4751 PerlIO_printf(Perl_debug_log, " NV = %.*g\n", DBL_DIG, SvNVX(sv));
4754 PerlIO_printf(Perl_debug_log, " RV = 0x%lx\n", (long)SvRV(sv));
4760 if (type <= SVt_PVLV) {
4762 PerlIO_printf(Perl_debug_log, " PV = 0x%lx \"%s\"\n CUR = %ld\n LEN = %ld\n",
4763 (long)SvPVX(sv), SvPVX(sv), (long)SvCUR(sv), (long)SvLEN(sv));
4765 PerlIO_printf(Perl_debug_log, " PV = 0\n");
4767 if (type >= SVt_PVMG) {
4769 PerlIO_printf(Perl_debug_log, " MAGIC = 0x%lx\n", (long)SvMAGIC(sv));
4772 PerlIO_printf(Perl_debug_log, " STASH = \"%s\"\n", HvNAME(SvSTASH(sv)));
4776 PerlIO_printf(Perl_debug_log, " TYPE = %c\n", LvTYPE(sv));
4777 PerlIO_printf(Perl_debug_log, " TARGOFF = %ld\n", (long)LvTARGOFF(sv));
4778 PerlIO_printf(Perl_debug_log, " TARGLEN = %ld\n", (long)LvTARGLEN(sv));
4779 PerlIO_printf(Perl_debug_log, " TARG = 0x%lx\n", (long)LvTARG(sv));
4780 sv_dump(LvTARG(sv));
4783 PerlIO_printf(Perl_debug_log, " ARRAY = 0x%lx\n", (long)AvARRAY(sv));
4784 PerlIO_printf(Perl_debug_log, " ALLOC = 0x%lx\n", (long)AvALLOC(sv));
4785 PerlIO_printf(Perl_debug_log, " FILL = %ld\n", (long)AvFILLp(sv));
4786 PerlIO_printf(Perl_debug_log, " MAX = %ld\n", (long)AvMAX(sv));
4787 PerlIO_printf(Perl_debug_log, " ARYLEN = 0x%lx\n", (long)AvARYLEN(sv));
4788 flags = AvFLAGS(sv);
4790 if (flags & AVf_REAL) sv_catpv(d, ",REAL");
4791 if (flags & AVf_REIFY) sv_catpv(d, ",REIFY");
4792 if (flags & AVf_REUSED) sv_catpv(d, ",REUSED");
4793 PerlIO_printf(Perl_debug_log, " FLAGS = (%s)\n",
4794 SvCUR(d) ? SvPVX(d) + 1 : "");
4797 PerlIO_printf(Perl_debug_log, " ARRAY = 0x%lx\n",(long)HvARRAY(sv));
4798 PerlIO_printf(Perl_debug_log, " KEYS = %ld\n", (long)HvKEYS(sv));
4799 PerlIO_printf(Perl_debug_log, " FILL = %ld\n", (long)HvFILL(sv));
4800 PerlIO_printf(Perl_debug_log, " MAX = %ld\n", (long)HvMAX(sv));
4801 PerlIO_printf(Perl_debug_log, " RITER = %ld\n", (long)HvRITER(sv));
4802 PerlIO_printf(Perl_debug_log, " EITER = 0x%lx\n",(long) HvEITER(sv));
4804 PerlIO_printf(Perl_debug_log, " PMROOT = 0x%lx\n",(long)HvPMROOT(sv));
4806 PerlIO_printf(Perl_debug_log, " NAME = \"%s\"\n", HvNAME(sv));
4810 PerlIO_printf(Perl_debug_log, " PROTOTYPE = \"%s\"\n", SvPV(sv,na));
4813 PerlIO_printf(Perl_debug_log, " STASH = 0x%lx\n", (long)CvSTASH(sv));
4814 PerlIO_printf(Perl_debug_log, " START = 0x%lx\n", (long)CvSTART(sv));
4815 PerlIO_printf(Perl_debug_log, " ROOT = 0x%lx\n", (long)CvROOT(sv));
4816 PerlIO_printf(Perl_debug_log, " XSUB = 0x%lx\n", (long)CvXSUB(sv));
4817 PerlIO_printf(Perl_debug_log, " XSUBANY = %ld\n", (long)CvXSUBANY(sv).any_i32);
4818 PerlIO_printf(Perl_debug_log, " GV = 0x%lx", (long)CvGV(sv));
4819 if (CvGV(sv) && GvNAME(CvGV(sv))) {
4820 PerlIO_printf(Perl_debug_log, " \"%s\"\n", GvNAME(CvGV(sv)));
4822 PerlIO_printf(Perl_debug_log, "\n");
4824 PerlIO_printf(Perl_debug_log, " FILEGV = 0x%lx\n", (long)CvFILEGV(sv));
4825 PerlIO_printf(Perl_debug_log, " DEPTH = %ld\n", (long)CvDEPTH(sv));
4826 PerlIO_printf(Perl_debug_log, " PADLIST = 0x%lx\n", (long)CvPADLIST(sv));
4827 PerlIO_printf(Perl_debug_log, " OUTSIDE = 0x%lx\n", (long)CvOUTSIDE(sv));
4829 PerlIO_printf(Perl_debug_log, " MUTEXP = 0x%lx\n", (long)CvMUTEXP(sv));
4830 PerlIO_printf(Perl_debug_log, " OWNER = 0x%lx\n", (long)CvOWNER(sv));
4831 #endif /* USE_THREADS */
4832 PerlIO_printf(Perl_debug_log, " FLAGS = 0x%lx\n",
4833 (unsigned long)CvFLAGS(sv));
4834 if (type == SVt_PVFM)
4835 PerlIO_printf(Perl_debug_log, " LINES = %ld\n", (long)FmLINES(sv));
4838 PerlIO_printf(Perl_debug_log, " NAME = \"%s\"\n", GvNAME(sv));
4839 PerlIO_printf(Perl_debug_log, " NAMELEN = %ld\n", (long)GvNAMELEN(sv));
4840 PerlIO_printf(Perl_debug_log, " STASH = \"%s\"\n", HvNAME(GvSTASH(sv)));
4841 PerlIO_printf(Perl_debug_log, " GP = 0x%lx\n", (long)GvGP(sv));
4842 PerlIO_printf(Perl_debug_log, " SV = 0x%lx\n", (long)GvSV(sv));
4843 PerlIO_printf(Perl_debug_log, " REFCNT = %ld\n", (long)GvREFCNT(sv));
4844 PerlIO_printf(Perl_debug_log, " IO = 0x%lx\n", (long)GvIOp(sv));
4845 PerlIO_printf(Perl_debug_log, " FORM = 0x%lx\n", (long)GvFORM(sv));
4846 PerlIO_printf(Perl_debug_log, " AV = 0x%lx\n", (long)GvAV(sv));
4847 PerlIO_printf(Perl_debug_log, " HV = 0x%lx\n", (long)GvHV(sv));
4848 PerlIO_printf(Perl_debug_log, " CV = 0x%lx\n", (long)GvCV(sv));
4849 PerlIO_printf(Perl_debug_log, " CVGEN = 0x%lx\n", (long)GvCVGEN(sv));
4850 PerlIO_printf(Perl_debug_log, " LASTEXPR = %ld\n", (long)GvLASTEXPR(sv));
4851 PerlIO_printf(Perl_debug_log, " LINE = %ld\n", (long)GvLINE(sv));
4852 PerlIO_printf(Perl_debug_log, " FILEGV = 0x%lx\n", (long)GvFILEGV(sv));
4853 PerlIO_printf(Perl_debug_log, " EGV = 0x%lx\n", (long)GvEGV(sv));
4856 PerlIO_printf(Perl_debug_log, " IFP = 0x%lx\n", (long)IoIFP(sv));
4857 PerlIO_printf(Perl_debug_log, " OFP = 0x%lx\n", (long)IoOFP(sv));
4858 PerlIO_printf(Perl_debug_log, " DIRP = 0x%lx\n", (long)IoDIRP(sv));
4859 PerlIO_printf(Perl_debug_log, " LINES = %ld\n", (long)IoLINES(sv));
4860 PerlIO_printf(Perl_debug_log, " PAGE = %ld\n", (long)IoPAGE(sv));
4861 PerlIO_printf(Perl_debug_log, " PAGE_LEN = %ld\n", (long)IoPAGE_LEN(sv));
4862 PerlIO_printf(Perl_debug_log, " LINES_LEFT = %ld\n", (long)IoLINES_LEFT(sv));
4863 PerlIO_printf(Perl_debug_log, " TOP_NAME = \"%s\"\n", IoTOP_NAME(sv));
4864 PerlIO_printf(Perl_debug_log, " TOP_GV = 0x%lx\n", (long)IoTOP_GV(sv));
4865 PerlIO_printf(Perl_debug_log, " FMT_NAME = \"%s\"\n", IoFMT_NAME(sv));
4866 PerlIO_printf(Perl_debug_log, " FMT_GV = 0x%lx\n", (long)IoFMT_GV(sv));
4867 PerlIO_printf(Perl_debug_log, " BOTTOM_NAME = \"%s\"\n", IoBOTTOM_NAME(sv));
4868 PerlIO_printf(Perl_debug_log, " BOTTOM_GV = 0x%lx\n", (long)IoBOTTOM_GV(sv));
4869 PerlIO_printf(Perl_debug_log, " SUBPROCESS = %ld\n", (long)IoSUBPROCESS(sv));
4870 PerlIO_printf(Perl_debug_log, " TYPE = %c\n", IoTYPE(sv));
4871 PerlIO_printf(Perl_debug_log, " FLAGS = 0x%lx\n", (long)IoFLAGS(sv));