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));
60 static void sv_check_thinkfirst _((SV *sv));
62 typedef void (*SVFUNC) _((SV*));
68 MUTEX_LOCK(&sv_mutex); \
69 (p) = (SV*)safemalloc(sizeof(SV)); \
71 MUTEX_UNLOCK(&sv_mutex); \
76 MUTEX_LOCK(&sv_mutex); \
79 MUTEX_UNLOCK(&sv_mutex); \
85 #define REGHASH(sv,size) ((((U32)(sv)) >> 2) % (size))
87 #define REG_REPLACE(sv,a,b) \
89 void* p = sv->sv_any; \
90 I32 h = REGHASH(sv, regsize); \
92 while (registry[i] != (a)) { \
96 die("SV registry bug"); \
101 #define REG_ADD(sv) REG_REPLACE(sv,Nullsv,sv)
102 #define REG_REMOVE(sv) REG_REPLACE(sv,sv,Nullsv)
108 if (sv_count >= (regsize >> 1))
110 SV **oldreg = registry;
111 I32 oldsize = regsize;
113 regsize = regsize ? ((regsize << 2) + 1) : 2037;
114 registry = (SV**)safemalloc(regsize * sizeof(SV*));
115 memzero(registry, regsize * sizeof(SV*));
120 for (i = 0; i < oldsize; ++i) {
121 SV* oldsv = oldreg[i];
147 for (i = 0; i < regsize; ++i) {
148 SV* sv = registry[i];
155 sv_add_arena(ptr, size, flags)
160 if (!(flags & SVf_FAKE))
167 * "A time to plant, and a time to uproot what was planted..."
170 #define plant_SV(p) \
172 SvANY(p) = (void *)sv_root; \
173 SvFLAGS(p) = SVTYPEMASK; \
178 /* sv_mutex must be held while calling uproot_SV() */
179 #define uproot_SV(p) \
182 sv_root = (SV*)SvANY(p); \
186 #define new_SV(p) do { \
187 MUTEX_LOCK(&sv_mutex); \
192 MUTEX_UNLOCK(&sv_mutex); \
197 #define del_SV(p) do { \
198 MUTEX_LOCK(&sv_mutex); \
203 MUTEX_UNLOCK(&sv_mutex); \
214 for (sva = sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
216 svend = &sva[SvREFCNT(sva)];
217 if (p >= sv && p < svend)
221 warn("Attempt to free non-arena SV: 0x%lx", (unsigned long)p);
228 #else /* ! DEBUGGING */
230 #define del_SV(p) plant_SV(p)
232 #endif /* DEBUGGING */
235 sv_add_arena(char *ptr, U32 size, U32 flags)
240 Zero(sva, size, char);
242 /* The first SV in an arena isn't an SV. */
243 SvANY(sva) = (void *) sv_arenaroot; /* ptr to next arena */
244 SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */
245 SvFLAGS(sva) = flags; /* FAKE if not to be freed */
250 svend = &sva[SvREFCNT(sva) - 1];
253 SvANY(sv) = (void *)(SV*)(sv + 1);
254 SvFLAGS(sv) = SVTYPEMASK;
258 SvFLAGS(sv) = SVTYPEMASK;
261 /* sv_mutex must be held while calling more_sv() */
268 sv_add_arena(nice_chunk, nice_chunk_size, 0);
272 char *chunk; /* must use New here to match call to */
273 New(704,chunk,1008,char); /* Safefree() in sv_free_arenas() */
274 sv_add_arena(chunk, 1008, 0);
287 for (sva = sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
288 svend = &sva[SvREFCNT(sva)];
289 for (sv = sva + 1; sv < svend; ++sv) {
290 if (SvTYPE(sv) != SVTYPEMASK)
299 do_report_used(SV *sv)
301 if (SvTYPE(sv) != SVTYPEMASK) {
302 /* XXX Perhaps this ought to go to Perl_debug_log, if DEBUGGING. */
303 PerlIO_printf(PerlIO_stderr(), "****\n");
311 visit(do_report_used);
315 do_clean_objs(SV *sv)
319 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
320 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
326 /* XXX Might want to check arrays, etc. */
329 #ifndef DISABLE_DESTRUCTOR_KLUDGE
331 do_clean_named_objs(SV *sv)
333 if (SvTYPE(sv) == SVt_PVGV && GvSV(sv))
334 do_clean_objs(GvSV(sv));
338 static bool in_clean_objs = FALSE;
343 in_clean_objs = TRUE;
344 #ifndef DISABLE_DESTRUCTOR_KLUDGE
345 visit(do_clean_named_objs);
347 visit(do_clean_objs);
348 in_clean_objs = FALSE;
354 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops:\n "), sv_dump(sv));)
355 SvFLAGS(sv) |= SVf_BREAK;
359 static bool in_clean_all = FALSE;
366 in_clean_all = FALSE;
375 /* Free arenas here, but be careful about fake ones. (We assume
376 contiguity of the fake ones with the corresponding real ones.) */
378 for (sva = sv_arenaroot; sva; sva = svanext) {
379 svanext = (SV*) SvANY(sva);
380 while (svanext && SvFAKE(svanext))
381 svanext = (SV*) SvANY(svanext);
384 Safefree((void *)sva);
398 * See comment in more_xiv() -- RAM.
400 xiv_root = (IV**)*xiv;
401 return (XPVIV*)((char*)xiv - sizeof(XPV));
409 IV** xiv = (IV**)((char*)(p) + sizeof(XPV));
410 *xiv = (IV *)xiv_root;
418 register IV** xivend;
419 XPV* ptr = (XPV*)safemalloc(1008);
420 ptr->xpv_pv = (char*)xiv_arenaroot; /* linked list of xiv arenas */
421 xiv_arenaroot = ptr; /* to keep Purify happy */
424 xivend = &xiv[1008 / sizeof(IV *) - 1];
425 xiv += (sizeof(XPV) - 1) / sizeof(IV *) + 1; /* fudge by size of XPV */
427 while (xiv < xivend) {
428 *xiv = (IV *)(xiv + 1);
441 xnv_root = *(double**)xnv;
442 return (XPVNV*)((char*)xnv - sizeof(XPVIV));
450 double* xnv = (double*)((char*)(p) + sizeof(XPVIV));
451 *(double**)xnv = xnv_root;
458 register double* xnv;
459 register double* xnvend;
460 xnv = (double*)safemalloc(1008);
461 xnvend = &xnv[1008 / sizeof(double) - 1];
462 xnv += (sizeof(XPVIV) - 1) / sizeof(double) + 1; /* fudge by sizeof XPVIV */
464 while (xnv < xnvend) {
465 *(double**)xnv = (double*)(xnv + 1);
478 xrv_root = (XRV*)xrv->xrv_rv;
487 p->xrv_rv = (SV*)xrv_root;
495 register XRV* xrvend;
496 xrv_root = (XRV*)safemalloc(1008);
498 xrvend = &xrv[1008 / sizeof(XRV) - 1];
499 while (xrv < xrvend) {
500 xrv->xrv_rv = (SV*)(xrv + 1);
513 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((XPVIV*) 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((XPVNV*) 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((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((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)
608 sv_upgrade(register SV *sv, U32 mt)
618 if (SvTYPE(sv) == mt)
624 switch (SvTYPE(sv)) {
639 nv = (double)SvIVX(sv);
645 else if (mt < SVt_PVIV)
662 pv = (char*)SvRV(sv);
666 nv = (double)(unsigned long)pv;
682 else if (mt == SVt_NV)
693 del_XPVIV(SvANY(sv));
703 del_XPVNV(SvANY(sv));
713 del_XPVMG(SvANY(sv));
716 croak("Can't upgrade that kind of scalar");
721 croak("Can't upgrade to undef");
723 SvANY(sv) = new_XIV();
727 SvANY(sv) = new_XNV();
731 SvANY(sv) = new_XRV();
735 SvANY(sv) = new_XPV();
741 SvANY(sv) = new_XPVIV();
751 SvANY(sv) = new_XPVNV();
759 SvANY(sv) = new_XPVMG();
769 SvANY(sv) = new_XPVLV();
783 SvANY(sv) = new_XPVAV();
798 SvANY(sv) = new_XPVHV();
814 SvANY(sv) = new_XPVCV();
815 Zero(SvANY(sv), 1, XPVCV);
825 SvANY(sv) = new_XPVGV();
840 SvANY(sv) = new_XPVBM();
853 SvANY(sv) = new_XPVFM();
854 Zero(SvANY(sv), 1, XPVFM);
864 SvANY(sv) = new_XPVIO();
865 Zero(SvANY(sv), 1, XPVIO);
876 SvFLAGS(sv) &= ~SVTYPEMASK;
885 SV *t = sv_newmortal();
895 else if (sv == (SV*)0x55555555 || SvTYPE(sv) == 'U') {
899 else if (sv == &sv_undef || sv == &sv_no || sv == &sv_yes) {
900 if (sv == &sv_undef) {
901 sv_catpv(t, "SV_UNDEF");
902 if (!(SvFLAGS(sv) & (SVf_OK|SVf_OOK|SVs_OBJECT|
903 SVs_GMG|SVs_SMG|SVs_RMG)) &&
907 else if (sv == &sv_no) {
908 sv_catpv(t, "SV_NO");
909 if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
910 SVs_GMG|SVs_SMG|SVs_RMG)) &&
911 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
918 sv_catpv(t, "SV_YES");
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|
924 SvPVX(sv) && *SvPVX(sv) == '1' &&
930 else if (SvREFCNT(sv) == 0) {
936 if (SvCUR(t) + unref > 10) {
937 SvCUR(t) = unref + 3;
945 switch (SvTYPE(sv)) {
947 sv_catpv(t, "FREED");
951 sv_catpv(t, "UNDEF");
985 sv_catpvf(t, "CV(%s)", GvNAME(CvGV(sv)));
1005 sv_catpv(t, "(null)");
1007 sv_catpvf(t, "(%ld+\"%.127s\")",(long)SvIVX(sv),SvPVX(sv));
1009 sv_catpvf(t, "(\"%.127s\")",SvPVX(sv));
1011 else if (SvNOKp(sv)) {
1012 SET_NUMERIC_STANDARD();
1013 sv_catpvf(t, "(%g)",SvNVX(sv));
1015 else if (SvIOKp(sv))
1016 sv_catpvf(t, "(%ld)",(long)SvIVX(sv));
1030 sv_backoff(register SV *sv)
1034 char *s = SvPVX(sv);
1035 SvLEN(sv) += SvIVX(sv);
1036 SvPVX(sv) -= SvIVX(sv);
1038 Move(s, SvPVX(sv), SvCUR(sv)+1, char);
1040 SvFLAGS(sv) &= ~SVf_OOK;
1046 sv_grow(register SV *sv, register I32 newlen)
1048 sv_grow(SV* sv, unsigned long newlen)
1053 #ifdef HAS_64K_LIMIT
1054 if (newlen >= 0x10000) {
1055 PerlIO_printf(Perl_debug_log, "Allocation too large: %lx\n", newlen);
1058 #endif /* HAS_64K_LIMIT */
1061 if (SvTYPE(sv) < SVt_PV) {
1062 sv_upgrade(sv, SVt_PV);
1065 else if (SvOOK(sv)) { /* pv is offset? */
1068 if (newlen > SvLEN(sv))
1069 newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */
1073 if (newlen > SvLEN(sv)) { /* need more room? */
1075 Renew(s,newlen,char);
1077 New(703,s,newlen,char);
1079 SvLEN_set(sv, newlen);
1085 sv_setiv(register SV *sv, IV i)
1087 sv_check_thinkfirst(sv);
1088 switch (SvTYPE(sv)) {
1090 sv_upgrade(sv, SVt_IV);
1093 sv_upgrade(sv, SVt_PVNV);
1097 sv_upgrade(sv, SVt_PVIV);
1113 croak("Can't coerce %s to integer in %s", sv_reftype(sv,0),
1114 op_desc[op->op_type]);
1117 (void)SvIOK_only(sv); /* validate number */
1123 sv_setuv(register SV *sv, UV u)
1128 sv_setnv(sv, (double)u);
1132 sv_setnv(register SV *sv, double num)
1134 sv_check_thinkfirst(sv);
1135 switch (SvTYPE(sv)) {
1138 sv_upgrade(sv, SVt_NV);
1144 sv_upgrade(sv, SVt_PVNV);
1151 (void)SvOOK_off(sv);
1166 croak("Can't coerce %s to number in %s", sv_reftype(sv,0),
1167 op_name[op->op_type]);
1171 (void)SvNOK_only(sv); /* validate number */
1176 not_a_number(SV *sv)
1182 char *limit = tmpbuf + sizeof(tmpbuf) - 8;
1183 /* each *s can expand to 4 chars + "...\0",
1184 i.e. need room for 8 chars */
1186 for (s = SvPVX(sv); *s && d < limit; s++) {
1188 if (ch & 128 && !isPRINT_LC(ch)) {
1197 else if (ch == '\r') {
1201 else if (ch == '\f') {
1205 else if (ch == '\\') {
1209 else if (isPRINT_LC(ch))
1224 warn("Argument \"%s\" isn't numeric in %s", tmpbuf,
1225 op_name[op->op_type]);
1227 warn("Argument \"%s\" isn't numeric", tmpbuf);
1231 sv_2iv(register SV *sv)
1235 if (SvGMAGICAL(sv)) {
1240 if (SvNVX(sv) < 0.0)
1241 return I_V(SvNVX(sv));
1243 return (IV) U_V(SvNVX(sv));
1245 if (SvPOKp(sv) && SvLEN(sv))
1248 if (dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) {
1256 if (SvTHINKFIRST(sv)) {
1260 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
1261 return SvIV(tmpstr);
1262 #endif /* OVERLOAD */
1263 return (IV)SvRV(sv);
1265 if (SvREADONLY(sv)) {
1267 if (SvNVX(sv) < 0.0)
1268 return I_V(SvNVX(sv));
1270 return (IV) U_V(SvNVX(sv));
1272 if (SvPOKp(sv) && SvLEN(sv))
1279 switch (SvTYPE(sv)) {
1281 sv_upgrade(sv, SVt_IV);
1284 sv_upgrade(sv, SVt_PVIV);
1287 sv_upgrade(sv, SVt_PVNV);
1292 if (SvNVX(sv) < 0.0)
1293 SvIVX(sv) = I_V(SvNVX(sv));
1295 SvUVX(sv) = U_V(SvNVX(sv));
1297 else if (SvPOKp(sv) && SvLEN(sv)) {
1299 SvIVX(sv) = asIV(sv);
1303 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1307 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2iv(%ld)\n",
1308 (unsigned long)sv,(long)SvIVX(sv)));
1313 sv_2uv(register SV *sv)
1317 if (SvGMAGICAL(sv)) {
1322 return U_V(SvNVX(sv));
1323 if (SvPOKp(sv) && SvLEN(sv))
1326 if (dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) {
1334 if (SvTHINKFIRST(sv)) {
1338 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
1339 return SvUV(tmpstr);
1340 #endif /* OVERLOAD */
1341 return (UV)SvRV(sv);
1343 if (SvREADONLY(sv)) {
1345 return U_V(SvNVX(sv));
1347 if (SvPOKp(sv) && SvLEN(sv))
1354 switch (SvTYPE(sv)) {
1356 sv_upgrade(sv, SVt_IV);
1359 sv_upgrade(sv, SVt_PVIV);
1362 sv_upgrade(sv, SVt_PVNV);
1367 SvUVX(sv) = U_V(SvNVX(sv));
1369 else if (SvPOKp(sv) && SvLEN(sv)) {
1371 SvUVX(sv) = asUV(sv);
1374 if (dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) {
1381 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2uv(%lu)\n",
1382 (unsigned long)sv,SvUVX(sv)));
1387 sv_2nv(register SV *sv)
1391 if (SvGMAGICAL(sv)) {
1395 if (SvPOKp(sv) && SvLEN(sv)) {
1396 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1398 SET_NUMERIC_STANDARD();
1399 return atof(SvPVX(sv));
1402 return (double)SvIVX(sv);
1404 if (dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) {
1412 if (SvTHINKFIRST(sv)) {
1416 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)))
1417 return SvNV(tmpstr);
1418 #endif /* OVERLOAD */
1419 return (double)(unsigned long)SvRV(sv);
1421 if (SvREADONLY(sv)) {
1422 if (SvPOKp(sv) && SvLEN(sv)) {
1423 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1425 SET_NUMERIC_STANDARD();
1426 return atof(SvPVX(sv));
1429 return (double)SvIVX(sv);
1435 if (SvTYPE(sv) < SVt_NV) {
1436 if (SvTYPE(sv) == SVt_IV)
1437 sv_upgrade(sv, SVt_PVNV);
1439 sv_upgrade(sv, SVt_NV);
1440 DEBUG_c(SET_NUMERIC_STANDARD());
1441 DEBUG_c(PerlIO_printf(Perl_debug_log,
1442 "0x%lx num(%g)\n",(unsigned long)sv,SvNVX(sv)));
1444 else if (SvTYPE(sv) < SVt_PVNV)
1445 sv_upgrade(sv, SVt_PVNV);
1447 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
1449 SvNVX(sv) = (double)SvIVX(sv);
1451 else if (SvPOKp(sv) && SvLEN(sv)) {
1452 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1454 SET_NUMERIC_STANDARD();
1455 SvNVX(sv) = atof(SvPVX(sv));
1459 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1464 DEBUG_c(SET_NUMERIC_STANDARD());
1465 DEBUG_c(PerlIO_printf(Perl_debug_log,
1466 "0x%lx 2nv(%g)\n",(unsigned long)sv,SvNVX(sv)));
1473 I32 numtype = looks_like_number(sv);
1477 return atol(SvPVX(sv));
1478 if (!numtype && dowarn)
1480 SET_NUMERIC_STANDARD();
1481 d = atof(SvPVX(sv));
1491 I32 numtype = looks_like_number(sv);
1495 return strtoul(SvPVX(sv), Null(char**), 10);
1497 if (!numtype && dowarn)
1499 SET_NUMERIC_STANDARD();
1500 return U_V(atof(SvPVX(sv)));
1504 looks_like_number(SV *sv)
1507 register char *send;
1508 register char *sbegin;
1516 else if (SvPOKp(sv))
1517 sbegin = SvPV(sv, len);
1520 send = sbegin + len;
1525 if (*s == '+' || *s == '-')
1528 /* next must be digit or '.' */
1532 } while (isDIGIT(*s));
1535 while (isDIGIT(*s)) /* optional digits after "." */
1539 else if (*s == '.') {
1541 /* no digits before '.' means we need digits after it */
1545 } while (isDIGIT(*s));
1554 * we return 1 if the number can be converted to _integer_ with atol()
1555 * and 2 if you need (int)atof().
1559 /* we can have an optional exponent part */
1560 if (*s == 'e' || *s == 'E') {
1563 if (*s == '+' || *s == '-')
1568 } while (isDIGIT(*s));
1577 if (len == 10 && memEQ(sbegin, "0 but true", 10))
1583 sv_2pv(register SV *sv, STRLEN *lp)
1588 char tmpbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
1594 if (SvGMAGICAL(sv)) {
1601 (void)sprintf(tmpbuf,"%ld",(long)SvIVX(sv));
1606 SET_NUMERIC_STANDARD();
1607 Gconvert(SvNVX(sv), DBL_DIG, 0, tmpbuf);
1612 if (dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) {
1621 if (SvTHINKFIRST(sv)) {
1625 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)))
1626 return SvPV(tmpstr,*lp);
1627 #endif /* OVERLOAD */
1632 switch (SvTYPE(sv)) {
1641 case SVt_PVMG: s = "SCALAR"; break;
1642 case SVt_PVLV: s = "LVALUE"; break;
1643 case SVt_PVAV: s = "ARRAY"; break;
1644 case SVt_PVHV: s = "HASH"; break;
1645 case SVt_PVCV: s = "CODE"; break;
1646 case SVt_PVGV: s = "GLOB"; break;
1647 case SVt_PVFM: s = "FORMATLINE"; break;
1648 case SVt_PVIO: s = "IO"; break;
1649 default: s = "UNKNOWN"; break;
1653 sv_setpvf(tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
1656 sv_catpvf(tsv, "(0x%lx)", (unsigned long)sv);
1662 if (SvREADONLY(sv)) {
1664 SET_NUMERIC_STANDARD();
1665 Gconvert(SvNVX(sv), DBL_DIG, 0, tmpbuf);
1670 (void)sprintf(tmpbuf,"%ld",(long)SvIVX(sv));
1680 if (!SvUPGRADE(sv, SVt_PV))
1683 if (SvTYPE(sv) < SVt_PVNV)
1684 sv_upgrade(sv, SVt_PVNV);
1687 olderrno = errno; /* some Xenix systems wipe out errno here */
1689 if (SvNVX(sv) == 0.0)
1690 (void)strcpy(s,"0");
1694 SET_NUMERIC_STANDARD();
1695 Gconvert(SvNVX(sv), DBL_DIG, 0, s);
1698 #ifdef FIXNEGATIVEZERO
1699 if (*s == '-' && s[1] == '0' && !s[2])
1708 else if (SvIOKp(sv)) {
1709 U32 oldIOK = SvIOK(sv);
1710 if (SvTYPE(sv) < SVt_PVIV)
1711 sv_upgrade(sv, SVt_PVIV);
1712 olderrno = errno; /* some Xenix systems wipe out errno here */
1713 sv_setpviv(sv, SvIVX(sv));
1723 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1728 *lp = s - SvPVX(sv);
1731 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2pv(%s)\n",(unsigned long)sv,SvPVX(sv)));
1735 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
1736 /* Sneaky stuff here */
1740 tsv = newSVpv(tmpbuf, 0);
1756 len = strlen(tmpbuf);
1758 #ifdef FIXNEGATIVEZERO
1759 if (len == 2 && t[0] == '-' && t[1] == '0') {
1764 (void)SvUPGRADE(sv, SVt_PV);
1766 s = SvGROW(sv, len + 1);
1774 /* This function is only called on magical items */
1776 sv_2bool(register SV *sv)
1788 if (SvAMAGIC(sv) && (tmpsv = AMG_CALLun(sv,bool_)))
1789 return SvTRUE(tmpsv);
1791 #endif /* OVERLOAD */
1792 return SvRV(sv) != 0;
1795 register XPV* Xpvtmp;
1796 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
1797 (*Xpvtmp->xpv_pv > '0' ||
1798 Xpvtmp->xpv_cur > 1 ||
1799 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
1806 return SvIVX(sv) != 0;
1809 return SvNVX(sv) != 0.0;
1816 /* Note: sv_setsv() should not be called with a source string that needs
1817 * to be reused, since it may destroy the source string if it is marked
1822 sv_setsv(SV *dstr, register SV *sstr)
1825 register U32 sflags;
1831 sv_check_thinkfirst(dstr);
1834 stype = SvTYPE(sstr);
1835 dtype = SvTYPE(dstr);
1837 if (dtype == SVt_PVGV && (SvFLAGS(dstr) & SVf_FAKE)) {
1838 sv_unglob(dstr); /* so fake GLOB won't perpetuate */
1839 sv_setpvn(dstr, "", 0);
1840 (void)SvPOK_only(dstr);
1841 dtype = SvTYPE(dstr);
1846 #endif /* OVERLOAD */
1847 /* There's a lot of redundancy below but we're going for speed here */
1851 (void)SvOK_off(dstr);
1854 if (dtype != SVt_IV && dtype < SVt_PVIV) {
1856 sv_upgrade(dstr, SVt_IV);
1857 else if (dtype == SVt_NV)
1858 sv_upgrade(dstr, SVt_PVNV);
1860 sv_upgrade(dstr, SVt_PVIV);
1864 if (dtype != SVt_NV && dtype < SVt_PVNV) {
1866 sv_upgrade(dstr, SVt_NV);
1868 sv_upgrade(dstr, SVt_PVNV);
1873 sv_upgrade(dstr, SVt_RV);
1874 else if (dtype == SVt_PVGV &&
1875 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
1878 if (curcop->cop_stash != GvSTASH(dstr))
1879 GvIMPORTED_on(dstr);
1889 sv_upgrade(dstr, SVt_PV);
1892 if (dtype < SVt_PVIV)
1893 sv_upgrade(dstr, SVt_PVIV);
1896 if (dtype < SVt_PVNV)
1897 sv_upgrade(dstr, SVt_PVNV);
1905 croak("Bizarre copy of %s in %s", sv_reftype(sstr, 0),
1906 op_name[op->op_type]);
1908 croak("Bizarre copy of %s", sv_reftype(sstr, 0));
1912 if (dtype <= SVt_PVGV) {
1914 if (dtype != SVt_PVGV) {
1915 char *name = GvNAME(sstr);
1916 STRLEN len = GvNAMELEN(sstr);
1917 sv_upgrade(dstr, SVt_PVGV);
1918 sv_magic(dstr, dstr, '*', name, len);
1919 GvSTASH(dstr) = GvSTASH(sstr);
1920 GvNAME(dstr) = savepvn(name, len);
1921 GvNAMELEN(dstr) = len;
1922 SvFAKE_on(dstr); /* can coerce to non-glob */
1924 /* ahem, death to those who redefine active sort subs */
1925 else if (curstack == sortstack
1926 && GvCV(dstr) && sortcop == CvSTART(GvCV(dstr)))
1927 croak("Can't redefine active sort subroutine %s",
1929 (void)SvOK_off(dstr);
1930 GvINTRO_off(dstr); /* one-shot flag */
1932 GvGP(dstr) = gp_ref(GvGP(sstr));
1934 if (curcop->cop_stash != GvSTASH(dstr))
1935 GvIMPORTED_on(dstr);
1942 if (SvGMAGICAL(sstr)) {
1944 if (SvTYPE(sstr) != stype) {
1945 stype = SvTYPE(sstr);
1946 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
1951 sv_upgrade(dstr, stype);
1954 sflags = SvFLAGS(sstr);
1956 if (sflags & SVf_ROK) {
1957 if (dtype >= SVt_PV) {
1958 if (dtype == SVt_PVGV) {
1960 SV *sref = SvREFCNT_inc(SvRV(sstr));
1962 int intro = GvINTRO(dstr);
1966 GvGP(dstr)->gp_refcnt--;
1967 GvINTRO_off(dstr); /* one-shot flag */
1968 Newz(602,gp, 1, GP);
1969 GvGP(dstr) = gp_ref(gp);
1970 GvSV(dstr) = NEWSV(72,0);
1971 GvLINE(dstr) = curcop->cop_line;
1972 GvEGV(dstr) = (GV*)dstr;
1975 switch (SvTYPE(sref)) {
1978 SAVESPTR(GvAV(dstr));
1980 dref = (SV*)GvAV(dstr);
1981 GvAV(dstr) = (AV*)sref;
1982 if (curcop->cop_stash != GvSTASH(dstr))
1983 GvIMPORTED_AV_on(dstr);
1987 SAVESPTR(GvHV(dstr));
1989 dref = (SV*)GvHV(dstr);
1990 GvHV(dstr) = (HV*)sref;
1991 if (curcop->cop_stash != GvSTASH(dstr))
1992 GvIMPORTED_HV_on(dstr);
1996 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
1997 SvREFCNT_dec(GvCV(dstr));
1998 GvCV(dstr) = Nullcv;
1999 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2002 SAVESPTR(GvCV(dstr));
2005 dref = (SV*)GvCV(dstr);
2006 if (GvCV(dstr) != (CV*)sref) {
2007 CV* cv = GvCV(dstr);
2009 if (!GvCVGEN((GV*)dstr) &&
2010 (CvROOT(cv) || CvXSUB(cv)))
2012 /* ahem, death to those who redefine
2013 * active sort subs */
2014 if (curstack == sortstack &&
2015 sortcop == CvSTART(cv))
2017 "Can't redefine active sort subroutine %s",
2018 GvENAME((GV*)dstr));
2019 if (cv_const_sv(cv))
2020 warn("Constant subroutine %s redefined",
2021 GvENAME((GV*)dstr));
2023 warn("Subroutine %s redefined",
2024 GvENAME((GV*)dstr));
2026 cv_ckproto(cv, (GV*)dstr,
2027 SvPOK(sref) ? SvPVX(sref) : Nullch);
2029 GvCV(dstr) = (CV*)sref;
2030 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2031 GvASSUMECV_on(dstr);
2034 if (curcop->cop_stash != GvSTASH(dstr))
2035 GvIMPORTED_CV_on(dstr);
2039 SAVESPTR(GvIOp(dstr));
2041 dref = (SV*)GvIOp(dstr);
2042 GvIOp(dstr) = (IO*)sref;
2046 SAVESPTR(GvSV(dstr));
2048 dref = (SV*)GvSV(dstr);
2050 if (curcop->cop_stash != GvSTASH(dstr))
2051 GvIMPORTED_SV_on(dstr);
2062 (void)SvOOK_off(dstr); /* backoff */
2063 Safefree(SvPVX(dstr));
2064 SvLEN(dstr)=SvCUR(dstr)=0;
2067 (void)SvOK_off(dstr);
2068 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
2070 if (sflags & SVp_NOK) {
2072 SvNVX(dstr) = SvNVX(sstr);
2074 if (sflags & SVp_IOK) {
2075 (void)SvIOK_on(dstr);
2076 SvIVX(dstr) = SvIVX(sstr);
2079 if (SvAMAGIC(sstr)) {
2082 #endif /* OVERLOAD */
2084 else if (sflags & SVp_POK) {
2087 * Check to see if we can just swipe the string. If so, it's a
2088 * possible small lose on short strings, but a big win on long ones.
2089 * It might even be a win on short strings if SvPVX(dstr)
2090 * has to be allocated and SvPVX(sstr) has to be freed.
2093 if (SvTEMP(sstr) && /* slated for free anyway? */
2094 !(sflags & SVf_OOK)) /* and not involved in OOK hack? */
2096 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
2098 SvFLAGS(dstr) &= ~SVf_OOK;
2099 Safefree(SvPVX(dstr) - SvIVX(dstr));
2102 Safefree(SvPVX(dstr));
2104 (void)SvPOK_only(dstr);
2105 SvPV_set(dstr, SvPVX(sstr));
2106 SvLEN_set(dstr, SvLEN(sstr));
2107 SvCUR_set(dstr, SvCUR(sstr));
2109 (void)SvOK_off(sstr);
2110 SvPV_set(sstr, Nullch);
2115 else { /* have to copy actual string */
2116 STRLEN len = SvCUR(sstr);
2118 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2119 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2120 SvCUR_set(dstr, len);
2121 *SvEND(dstr) = '\0';
2122 (void)SvPOK_only(dstr);
2125 if (sflags & SVp_NOK) {
2127 SvNVX(dstr) = SvNVX(sstr);
2129 if (sflags & SVp_IOK) {
2130 (void)SvIOK_on(dstr);
2131 SvIVX(dstr) = SvIVX(sstr);
2134 else if (sflags & SVp_NOK) {
2135 SvNVX(dstr) = SvNVX(sstr);
2136 (void)SvNOK_only(dstr);
2138 (void)SvIOK_on(dstr);
2139 SvIVX(dstr) = SvIVX(sstr);
2142 else if (sflags & SVp_IOK) {
2143 (void)SvIOK_only(dstr);
2144 SvIVX(dstr) = SvIVX(sstr);
2147 (void)SvOK_off(dstr);
2153 sv_setpvn(register SV *sv, register const char *ptr, register STRLEN len)
2155 assert(len >= 0); /* STRLEN is probably unsigned, so this may
2156 elicit a warning, but it won't hurt. */
2157 sv_check_thinkfirst(sv);
2162 if (SvTYPE(sv) >= SVt_PV) {
2163 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
2166 else if (!sv_upgrade(sv, SVt_PV))
2168 SvGROW(sv, len + 1);
2169 Move(ptr,SvPVX(sv),len,char);
2172 (void)SvPOK_only(sv); /* validate pointer */
2177 sv_setpv(register SV *sv, register const char *ptr)
2179 register STRLEN len;
2181 sv_check_thinkfirst(sv);
2187 if (SvTYPE(sv) >= SVt_PV) {
2188 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
2191 else if (!sv_upgrade(sv, SVt_PV))
2193 SvGROW(sv, len + 1);
2194 Move(ptr,SvPVX(sv),len+1,char);
2196 (void)SvPOK_only(sv); /* validate pointer */
2201 sv_usepvn(register SV *sv, register char *ptr, register STRLEN len)
2203 sv_check_thinkfirst(sv);
2204 if (!SvUPGRADE(sv, SVt_PV))
2211 Safefree(SvPVX(sv));
2212 Renew(ptr, len+1, char);
2215 SvLEN_set(sv, len+1);
2217 (void)SvPOK_only(sv); /* validate pointer */
2222 sv_check_thinkfirst(register SV *sv)
2224 if (SvTHINKFIRST(sv)) {
2225 if (SvREADONLY(sv)) {
2227 if (curcop != &compiling)
2236 sv_chop(register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
2240 register STRLEN delta;
2242 if (!ptr || !SvPOKp(sv))
2244 sv_check_thinkfirst(sv);
2245 if (SvTYPE(sv) < SVt_PVIV)
2246 sv_upgrade(sv,SVt_PVIV);
2250 SvFLAGS(sv) |= SVf_OOK;
2252 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK);
2253 delta = ptr - SvPVX(sv);
2261 sv_catpvn(register SV *sv, register char *ptr, register STRLEN len)
2266 junk = SvPV_force(sv, tlen);
2267 SvGROW(sv, tlen + len + 1);
2270 Move(ptr,SvPVX(sv)+tlen,len,char);
2273 (void)SvPOK_only(sv); /* validate pointer */
2278 sv_catsv(SV *dstr, register SV *sstr)
2284 if (s = SvPV(sstr, len))
2285 sv_catpvn(dstr,s,len);
2289 sv_catpv(register SV *sv, register char *ptr)
2291 register STRLEN len;
2297 junk = SvPV_force(sv, tlen);
2299 SvGROW(sv, tlen + len + 1);
2302 Move(ptr,SvPVX(sv)+tlen,len+1,char);
2304 (void)SvPOK_only(sv); /* validate pointer */
2324 sv_upgrade(sv, SVt_PV);
2325 SvGROW(sv, len + 1);
2330 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
2333 sv_magic(register SV *sv, SV *obj, int how, char *name, I32 namlen)
2337 if (SvREADONLY(sv)) {
2339 if (curcop != &compiling && !strchr("gBf", how))
2342 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
2343 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
2350 if (!SvUPGRADE(sv, SVt_PVMG))
2353 Newz(702,mg, 1, MAGIC);
2354 mg->mg_moremagic = SvMAGIC(sv);
2357 if (!obj || obj == sv || how == '#' || how == 'r')
2361 mg->mg_obj = SvREFCNT_inc(obj);
2362 mg->mg_flags |= MGf_REFCOUNTED;
2365 mg->mg_len = namlen;
2368 mg->mg_ptr = savepvn(name, namlen);
2369 else if (namlen == HEf_SVKEY)
2370 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
2374 mg->mg_virtual = &vtbl_sv;
2378 mg->mg_virtual = &vtbl_amagic;
2381 mg->mg_virtual = &vtbl_amagicelem;
2386 #endif /* OVERLOAD */
2388 mg->mg_virtual = &vtbl_bm;
2391 mg->mg_virtual = &vtbl_env;
2394 mg->mg_virtual = &vtbl_fm;
2397 mg->mg_virtual = &vtbl_envelem;
2400 mg->mg_virtual = &vtbl_mglob;
2403 mg->mg_virtual = &vtbl_isa;
2406 mg->mg_virtual = &vtbl_isaelem;
2409 mg->mg_virtual = &vtbl_nkeys;
2416 mg->mg_virtual = &vtbl_dbline;
2420 mg->mg_virtual = &vtbl_mutex;
2422 #endif /* USE_THREADS */
2423 #ifdef USE_LOCALE_COLLATE
2425 mg->mg_virtual = &vtbl_collxfrm;
2427 #endif /* USE_LOCALE_COLLATE */
2429 mg->mg_virtual = &vtbl_pack;
2433 mg->mg_virtual = &vtbl_packelem;
2436 mg->mg_virtual = &vtbl_regexp;
2439 mg->mg_virtual = &vtbl_sig;
2442 mg->mg_virtual = &vtbl_sigelem;
2445 mg->mg_virtual = &vtbl_taint;
2449 mg->mg_virtual = &vtbl_uvar;
2452 mg->mg_virtual = &vtbl_vec;
2455 mg->mg_virtual = &vtbl_substr;
2458 mg->mg_virtual = &vtbl_defelem;
2461 mg->mg_virtual = &vtbl_glob;
2464 mg->mg_virtual = &vtbl_arylen;
2467 mg->mg_virtual = &vtbl_pos;
2469 case '~': /* Reserved for use by extensions not perl internals. */
2470 /* Useful for attaching extension internal data to perl vars. */
2471 /* Note that multiple extensions may clash if magical scalars */
2472 /* etc holding private data from one are passed to another. */
2476 croak("Don't know how to handle magic of type '%c'", how);
2480 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
2484 sv_unmagic(SV *sv, int type)
2488 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
2491 for (mg = *mgp; mg; mg = *mgp) {
2492 if (mg->mg_type == type) {
2493 MGVTBL* vtbl = mg->mg_virtual;
2494 *mgp = mg->mg_moremagic;
2495 if (vtbl && vtbl->svt_free)
2496 (*vtbl->svt_free)(sv, mg);
2497 if (mg->mg_ptr && mg->mg_type != 'g')
2498 if (mg->mg_len >= 0)
2499 Safefree(mg->mg_ptr);
2500 else if (mg->mg_len == HEf_SVKEY)
2501 SvREFCNT_dec((SV*)mg->mg_ptr);
2502 if (mg->mg_flags & MGf_REFCOUNTED)
2503 SvREFCNT_dec(mg->mg_obj);
2507 mgp = &mg->mg_moremagic;
2511 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
2518 sv_insert(SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
2522 register char *midend;
2523 register char *bigend;
2527 croak("Can't modify non-existent substring");
2528 SvPV_force(bigstr, na);
2530 i = littlelen - len;
2531 if (i > 0) { /* string might grow */
2532 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
2533 mid = big + offset + len;
2534 midend = bigend = big + SvCUR(bigstr);
2537 while (midend > mid) /* shove everything down */
2538 *--bigend = *--midend;
2539 Move(little,big+offset,littlelen,char);
2545 Move(little,SvPVX(bigstr)+offset,len,char);
2550 big = SvPVX(bigstr);
2553 bigend = big + SvCUR(bigstr);
2555 if (midend > bigend)
2556 croak("panic: sv_insert");
2558 if (mid - big > bigend - midend) { /* faster to shorten from end */
2560 Move(little, mid, littlelen,char);
2563 i = bigend - midend;
2565 Move(midend, mid, i,char);
2569 SvCUR_set(bigstr, mid - big);
2572 else if (i = mid - big) { /* faster from front */
2573 midend -= littlelen;
2575 sv_chop(bigstr,midend-i);
2580 Move(little, mid, littlelen,char);
2582 else if (littlelen) {
2583 midend -= littlelen;
2584 sv_chop(bigstr,midend);
2585 Move(little,midend,littlelen,char);
2588 sv_chop(bigstr,midend);
2593 /* make sv point to what nstr did */
2596 sv_replace(register SV *sv, register SV *nsv)
2598 U32 refcnt = SvREFCNT(sv);
2599 sv_check_thinkfirst(sv);
2600 if (SvREFCNT(nsv) != 1)
2601 warn("Reference miscount in sv_replace()");
2602 if (SvMAGICAL(sv)) {
2606 sv_upgrade(nsv, SVt_PVMG);
2607 SvMAGIC(nsv) = SvMAGIC(sv);
2608 SvFLAGS(nsv) |= SvMAGICAL(sv);
2614 assert(!SvREFCNT(sv));
2615 StructCopy(nsv,sv,SV);
2616 SvREFCNT(sv) = refcnt;
2617 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
2622 sv_clear(register SV *sv)
2625 assert(SvREFCNT(sv) == 0);
2629 if (defstash) { /* Still have a symbol table? */
2634 SAVEFREESV(SvSTASH(sv));
2636 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
2641 sv_upgrade(&ref, SVt_RV);
2642 SvRV(&ref) = SvREFCNT_inc(sv);
2644 SvREFCNT(&ref) = 1; /* Fake, but otherwise
2645 creating+destructing a ref
2646 leads to disaster. */
2652 perl_call_sv((SV*)GvCV(destructor),
2653 G_DISCARD|G_EVAL|G_KEEPERR);
2654 del_XRV(SvANY(&ref));
2661 SvREFCNT_dec(SvSTASH(sv));
2663 SvOBJECT_off(sv); /* Curse the object. */
2664 if (SvTYPE(sv) != SVt_PVIO)
2665 --sv_objcount; /* XXX Might want something more general */
2669 croak("DESTROY created new reference to dead object");
2670 /* DESTROY gave object new lease on life */
2674 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
2676 switch (SvTYPE(sv)) {
2678 if (IoIFP(sv) != PerlIO_stdin() &&
2679 IoIFP(sv) != PerlIO_stdout() &&
2680 IoIFP(sv) != PerlIO_stderr())
2682 Safefree(IoTOP_NAME(sv));
2683 Safefree(IoFMT_NAME(sv));
2684 Safefree(IoBOTTOM_NAME(sv));
2700 Safefree(GvNAME(sv));
2707 (void)SvOOK_off(sv);
2712 SvREFCNT_dec(SvRV(sv));
2713 else if (SvPVX(sv) && SvLEN(sv))
2714 Safefree(SvPVX(sv));
2724 switch (SvTYPE(sv)) {
2740 del_XPVIV(SvANY(sv));
2743 del_XPVNV(SvANY(sv));
2746 del_XPVMG(SvANY(sv));
2749 del_XPVLV(SvANY(sv));
2752 del_XPVAV(SvANY(sv));
2755 del_XPVHV(SvANY(sv));
2758 del_XPVCV(SvANY(sv));
2761 del_XPVGV(SvANY(sv));
2764 del_XPVBM(SvANY(sv));
2767 del_XPVFM(SvANY(sv));
2770 del_XPVIO(SvANY(sv));
2773 SvFLAGS(sv) &= SVf_BREAK;
2774 SvFLAGS(sv) |= SVTYPEMASK;
2790 if (SvREADONLY(sv)) {
2791 if (sv == &sv_undef || sv == &sv_yes || sv == &sv_no)
2794 if (SvREFCNT(sv) == 0) {
2795 if (SvFLAGS(sv) & SVf_BREAK)
2797 if (in_clean_all) /* All is fair */
2799 warn("Attempt to free unreferenced scalar");
2802 if (--SvREFCNT(sv) > 0)
2806 warn("Attempt to free temp prematurely: %s", SvPEEK(sv));
2816 sv_len(register SV *sv)
2827 junk = SvPV(sv, len);
2832 sv_eq(register SV *str1, register SV *str2)
2844 pv1 = SvPV(str1, cur1);
2849 pv2 = SvPV(str2, cur2);
2854 return memEQ(pv1, pv2, cur1);
2858 sv_cmp(register SV *str1, register SV *str2)
2861 char *pv1 = str1 ? SvPV(str1, cur1) : (char *) NULL;
2863 char *pv2 = str2 ? SvPV(str2, cur2) : (char *) NULL;
2867 return cur2 ? -1 : 0;
2872 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
2875 return retval < 0 ? -1 : 1;
2880 return cur1 < cur2 ? -1 : 1;
2884 sv_cmp_locale(register SV *sv1, register SV *sv2)
2886 #ifdef USE_LOCALE_COLLATE
2892 if (collation_standard)
2896 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
2898 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
2900 if (!pv1 || !len1) {
2911 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
2914 return retval < 0 ? -1 : 1;
2917 * When the result of collation is equality, that doesn't mean
2918 * that there are no differences -- some locales exclude some
2919 * characters from consideration. So to avoid false equalities,
2920 * we use the raw string as a tiebreaker.
2926 #endif /* USE_LOCALE_COLLATE */
2928 return sv_cmp(sv1, sv2);
2931 #ifdef USE_LOCALE_COLLATE
2933 * Any scalar variable may carry an 'o' magic that contains the
2934 * scalar data of the variable transformed to such a format that
2935 * a normal memory comparison can be used to compare the data
2936 * according to the locale settings.
2939 sv_collxfrm(SV *sv, STRLEN *nxp)
2943 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
2944 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != collation_ix) {
2949 Safefree(mg->mg_ptr);
2951 if ((xf = mem_collxfrm(s, len, &xlen))) {
2952 if (SvREADONLY(sv)) {
2955 return xf + sizeof(collation_ix);
2958 sv_magic(sv, 0, 'o', 0, 0);
2959 mg = mg_find(sv, 'o');
2972 if (mg && mg->mg_ptr) {
2974 return mg->mg_ptr + sizeof(collation_ix);
2982 #endif /* USE_LOCALE_COLLATE */
2985 sv_gets(register SV *sv, register FILE *fp, I32 append)
2990 register STDCHAR rslast;
2991 register STDCHAR *bp;
2995 sv_check_thinkfirst(sv);
2996 if (!SvUPGRADE(sv, SVt_PV))
3004 else if (RsPARA(rs)) {
3009 rsptr = SvPV(rs, rslen);
3010 rslast = rslen ? rsptr[rslen - 1] : '\0';
3012 if (RsPARA(rs)) { /* have to do this both before and after */
3013 do { /* to make sure file boundaries work right */
3016 i = PerlIO_getc(fp);
3020 PerlIO_ungetc(fp,i);
3026 /* See if we know enough about I/O mechanism to cheat it ! */
3028 /* This used to be #ifdef test - it is made run-time test for ease
3029 of abstracting out stdio interface. One call should be cheap
3030 enough here - and may even be a macro allowing compile
3034 if (PerlIO_fast_gets(fp)) {
3037 * We're going to steal some values from the stdio struct
3038 * and put EVERYTHING in the innermost loop into registers.
3040 register STDCHAR *ptr;
3044 #if defined(VMS) && defined(PERLIO_IS_STDIO)
3045 /* An ungetc()d char is handled separately from the regular
3046 * buffer, so we getc() it back out and stuff it in the buffer.
3048 i = PerlIO_getc(fp);
3049 if (i == EOF) return 0;
3050 *(--((*fp)->_ptr)) = (unsigned char) i;
3054 /* Here is some breathtakingly efficient cheating */
3056 cnt = PerlIO_get_cnt(fp); /* get count into register */
3057 (void)SvPOK_only(sv); /* validate pointer */
3058 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
3059 if (cnt > 80 && SvLEN(sv) > append) {
3060 shortbuffered = cnt - SvLEN(sv) + append + 1;
3061 cnt -= shortbuffered;
3065 /* remember that cnt can be negative */
3066 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
3071 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
3072 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
3073 DEBUG_P(PerlIO_printf(Perl_debug_log,
3074 "Screamer: entering, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt));
3075 DEBUG_P(PerlIO_printf(Perl_debug_log,
3076 "Screamer: entering: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n",
3077 (long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp),
3078 (long)(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
3083 while (cnt > 0) { /* this | eat */
3085 if ((*bp++ = *ptr++) == rslast) /* really | dust */
3086 goto thats_all_folks; /* screams | sed :-) */
3090 Copy(ptr, bp, cnt, char); /* this | eat */
3091 bp += cnt; /* screams | dust */
3092 ptr += cnt; /* louder | sed :-) */
3097 if (shortbuffered) { /* oh well, must extend */
3098 cnt = shortbuffered;
3100 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
3102 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
3103 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
3107 DEBUG_P(PerlIO_printf(Perl_debug_log,
3108 "Screamer: going to getc, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt));
3109 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
3110 DEBUG_P(PerlIO_printf(Perl_debug_log,
3111 "Screamer: pre: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n",
3112 (long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp),
3113 (long)(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
3114 /* This used to call 'filbuf' in stdio form, but as that behaves like
3115 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
3116 another abstraction. */
3117 i = PerlIO_getc(fp); /* get more characters */
3118 DEBUG_P(PerlIO_printf(Perl_debug_log,
3119 "Screamer: post: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n",
3120 (long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp),
3121 (long)(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
3122 cnt = PerlIO_get_cnt(fp);
3123 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
3124 DEBUG_P(PerlIO_printf(Perl_debug_log,
3125 "Screamer: after getc, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt));
3127 if (i == EOF) /* all done for ever? */
3128 goto thats_really_all_folks;
3130 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
3132 SvGROW(sv, bpx + cnt + 2);
3133 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
3135 *bp++ = i; /* store character from PerlIO_getc */
3137 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
3138 goto thats_all_folks;
3142 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
3143 memNE((char*)bp - rslen, rsptr, rslen))
3144 goto screamer; /* go back to the fray */
3145 thats_really_all_folks:
3147 cnt += shortbuffered;
3148 DEBUG_P(PerlIO_printf(Perl_debug_log,
3149 "Screamer: quitting, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt));
3150 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
3151 DEBUG_P(PerlIO_printf(Perl_debug_log,
3152 "Screamer: end: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n",
3153 (long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp),
3154 (long)(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
3156 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
3157 DEBUG_P(PerlIO_printf(Perl_debug_log,
3158 "Screamer: done, len=%ld, string=|%.*s|\n",
3159 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
3163 /*The big, slow, and stupid way */
3168 register STDCHAR *bpe = buf + sizeof(buf);
3170 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
3171 ; /* keep reading */
3175 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
3176 /* Accomodate broken VAXC compiler, which applies U8 cast to
3177 * both args of ?: operator, causing EOF to change into 255
3179 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
3183 sv_catpvn(sv, (char *) buf, cnt);
3185 sv_setpvn(sv, (char *) buf, cnt);
3187 if (i != EOF && /* joy */
3189 SvCUR(sv) < rslen ||
3190 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
3194 * If we're reading from a TTY and we get a short read,
3195 * indicating that the user hit his EOF character, we need
3196 * to notice it now, because if we try to read from the TTY
3197 * again, the EOF condition will disappear.
3199 * The comparison of cnt to sizeof(buf) is an optimization
3200 * that prevents unnecessary calls to feof().
3204 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
3209 if (RsPARA(rs)) { /* have to do this both before and after */
3210 while (i != EOF) { /* to make sure file boundaries work right */
3211 i = PerlIO_getc(fp);
3213 PerlIO_ungetc(fp,i);
3220 win32_strip_return(sv);
3223 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
3228 sv_inc(register SV *sv)
3235 if (SvTHINKFIRST(sv)) {
3236 if (SvREADONLY(sv)) {
3238 if (curcop != &compiling)
3243 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) return;
3244 #endif /* OVERLOAD */
3250 flags = SvFLAGS(sv);
3251 if (flags & SVp_NOK) {
3252 (void)SvNOK_only(sv);
3256 if (flags & SVp_IOK) {
3257 if (SvIVX(sv) == IV_MAX)
3258 sv_setnv(sv, (double)IV_MAX + 1.0);
3260 (void)SvIOK_only(sv);
3265 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
3266 if ((flags & SVTYPEMASK) < SVt_PVNV)
3267 sv_upgrade(sv, SVt_NV);
3269 (void)SvNOK_only(sv);
3273 while (isALPHA(*d)) d++;
3274 while (isDIGIT(*d)) d++;
3276 SET_NUMERIC_STANDARD();
3277 sv_setnv(sv,atof(SvPVX(sv)) + 1.0); /* punt */
3281 while (d >= SvPVX(sv)) {
3291 *(d--) -= 'z' - 'a' + 1;
3294 /* oh,oh, the number grew */
3295 SvGROW(sv, SvCUR(sv) + 2);
3297 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
3306 sv_dec(register SV *sv)
3312 if (SvTHINKFIRST(sv)) {
3313 if (SvREADONLY(sv)) {
3315 if (curcop != &compiling)
3320 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) return;
3321 #endif /* OVERLOAD */
3327 flags = SvFLAGS(sv);
3328 if (flags & SVp_NOK) {
3330 (void)SvNOK_only(sv);
3333 if (flags & SVp_IOK) {
3334 if (SvIVX(sv) == IV_MIN)
3335 sv_setnv(sv, (double)IV_MIN - 1.0);
3337 (void)SvIOK_only(sv);
3342 if (!(flags & SVp_POK)) {
3343 if ((flags & SVTYPEMASK) < SVt_PVNV)
3344 sv_upgrade(sv, SVt_NV);
3346 (void)SvNOK_only(sv);
3349 SET_NUMERIC_STANDARD();
3350 sv_setnv(sv,atof(SvPVX(sv)) - 1.0); /* punt */
3353 /* Make a string that will exist for the duration of the expression
3354 * evaluation. Actually, it may have to last longer than that, but
3355 * hopefully we won't free it until it has been assigned to a
3356 * permanent location. */
3362 tmps_max += (tmps_max < 512) ? 128 : 512;
3363 Renew(tmps_stack, tmps_max, SV*);
3367 sv_mortalcopy(SV *oldstr)
3376 sv_setsv(sv,oldstr);
3377 if (++tmps_ix >= tmps_max)
3379 tmps_stack[tmps_ix] = sv;
3393 SvFLAGS(sv) = SVs_TEMP;
3394 if (++tmps_ix >= tmps_max)
3396 tmps_stack[tmps_ix] = sv;
3400 /* same thing without the copying */
3403 sv_2mortal(register SV *sv)
3408 if (SvREADONLY(sv) && curcop != &compiling)
3410 if (++tmps_ix >= tmps_max)
3412 tmps_stack[tmps_ix] = sv;
3418 newSVpv(char *s, STRLEN len)
3428 sv_setpvn(sv,s,len);
3434 newSVpvf(const char* pat, ...)
3438 newSVpvf(pat, va_alist)
3451 va_start(args, pat);
3455 sv_vsetpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
3497 sv_upgrade(sv, SVt_RV);
3499 SvRV(sv) = SvREFCNT_inc(ref);
3507 Perl_newRV_noinc(SV *ref)
3516 /* make an exact duplicate of old */
3519 newSVsv(register SV *old)
3525 if (SvTYPE(old) == SVTYPEMASK) {
3526 warn("semi-panic: attempt to dup freed string");
3544 sv_reset(register char *s, HV *stash)
3554 if (!*s) { /* reset ?? searches */
3555 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
3556 pm->op_pmflags &= ~PMf_USED;
3561 /* reset variables */
3563 if (!HvARRAY(stash))
3566 Zero(todo, 256, char);
3573 for ( ; i <= max; i++) {
3576 for (i = 0; i <= (I32) HvMAX(stash); i++) {
3577 for (entry = HvARRAY(stash)[i];
3579 entry = HeNEXT(entry)) {
3580 if (!todo[(U8)*HeKEY(entry)])
3582 gv = (GV*)HeVAL(entry);
3585 if (SvTYPE(sv) >= SVt_PV) {
3587 if (SvPVX(sv) != Nullch)
3594 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
3596 #ifndef VMS /* VMS has no environ array */
3598 environ[0] = Nullch;
3612 switch (SvTYPE(sv)) {
3620 croak("Bad filehandle: %s", GvNAME(gv));
3624 croak(no_usym, "filehandle");
3626 return sv_2io(SvRV(sv));
3627 gv = gv_fetchpv(SvPV(sv,na), FALSE, SVt_PVIO);
3633 croak("Bad filehandle: %s", SvPV(sv,na));
3640 sv_2cv(SV *sv, HV **st, GV **gvp, I32 lref)
3646 return *gvp = Nullgv, Nullcv;
3647 switch (SvTYPE(sv)) {
3667 if (SvTYPE(cv) != SVt_PVCV)
3668 croak("Not a subroutine reference");
3676 gv = gv_fetchpv(SvPV(sv, na), lref, SVt_PVCV);
3682 if (lref && !GvCVu(gv)) {
3685 tmpsv = NEWSV(704,0);
3686 gv_efullname3(tmpsv, gv, Nullch);
3687 newSUB(start_subparse(FALSE, 0),
3688 newSVOP(OP_CONST, 0, tmpsv),
3693 croak("Unable to create sub named \"%s\"", SvPV(sv,na));
3700 sv_true(register SV *sv)
3709 if ((tXpv = (XPV*)SvANY(sv)) &&
3710 (*tXpv->xpv_pv > '0' ||
3711 tXpv->xpv_cur > 1 ||
3712 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
3719 return SvIVX(sv) != 0;
3722 return SvNVX(sv) != 0.0;
3724 return sv_2bool(sv);
3730 sv_iv(register SV *sv)
3738 sv_uv(register SV *sv)
3746 sv_nv(register SV *sv)
3754 sv_pvn(SV *sv, STRLEN *lp)
3760 return sv_2pv(sv, lp);
3764 sv_pvn_force(SV *sv, STRLEN *lp)
3768 if (SvREADONLY(sv)) {
3770 if (curcop != &compiling)
3778 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
3779 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) {
3786 croak("Can't coerce %s to string in %s", sv_reftype(sv,0),
3787 op_name[op->op_type]);
3792 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
3797 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
3798 SvGROW(sv, len + 1);
3799 Move(s,SvPVX(sv),len,char);
3804 SvPOK_on(sv); /* validate pointer */
3806 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2pv(%s)\n",
3807 (unsigned long)sv,SvPVX(sv)));
3814 sv_reftype(SV *sv, int ob)
3816 if (ob && SvOBJECT(sv))
3817 return HvNAME(SvSTASH(sv));
3819 switch (SvTYPE(sv)) {
3833 case SVt_PVLV: return "LVALUE";
3834 case SVt_PVAV: return "ARRAY";
3835 case SVt_PVHV: return "HASH";
3836 case SVt_PVCV: return "CODE";
3837 case SVt_PVGV: return "GLOB";
3838 case SVt_PVFM: return "FORMLINE";
3839 default: return "UNKNOWN";
3860 sv_isa(SV *sv, char *name)
3872 return strEQ(HvNAME(SvSTASH(sv)), name);
3876 newSVrv(SV *rv, char *classname)
3886 sv_check_thinkfirst(rv);
3889 #endif /* OVERLOAD */
3891 if (SvTYPE(rv) < SVt_RV)
3892 sv_upgrade(rv, SVt_RV);
3895 SvRV(rv) = SvREFCNT_inc(sv);
3899 HV* stash = gv_stashpv(classname, TRUE);
3900 (void)sv_bless(rv, stash);
3906 sv_setref_pv(SV *rv, char *classname, void *pv)
3909 sv_setsv(rv, &sv_undef);
3911 sv_setiv(newSVrv(rv,classname), (IV)pv);
3916 sv_setref_iv(SV *rv, char *classname, IV iv)
3918 sv_setiv(newSVrv(rv,classname), iv);
3923 sv_setref_nv(SV *rv, char *classname, double nv)
3925 sv_setnv(newSVrv(rv,classname), nv);
3930 sv_setref_pvn(SV *rv, char *classname, char *pv, I32 n)
3932 sv_setpvn(newSVrv(rv,classname), pv, n);
3937 sv_bless(SV *sv, HV *stash)
3942 croak("Can't bless non-reference value");
3944 if (SvFLAGS(ref) & (SVs_OBJECT|SVf_READONLY)) {
3945 if (SvREADONLY(ref))
3947 if (SvOBJECT(ref)) {
3948 if (SvTYPE(ref) != SVt_PVIO)
3950 SvREFCNT_dec(SvSTASH(ref));
3954 if (SvTYPE(ref) != SVt_PVIO)
3956 (void)SvUPGRADE(ref, SVt_PVMG);
3957 SvSTASH(ref) = (HV*)SvREFCNT_inc(stash);
3964 #endif /* OVERLOAD */
3972 assert(SvTYPE(sv) == SVt_PVGV);
3976 sv_unmagic(sv, '*');
3977 Safefree(GvNAME(sv));
3979 SvFLAGS(sv) &= ~SVTYPEMASK;
3980 SvFLAGS(sv) |= SVt_PVMG;
3990 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
3993 sv_2mortal(rv); /* Schedule for freeing later */
3999 sv_magic((sv), Nullsv, 't', Nullch, 0);
4005 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
4006 MAGIC *mg = mg_find(sv, 't');
4015 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
4016 MAGIC *mg = mg_find(sv, 't');
4017 if (mg && ((mg->mg_len & 1) || (mg->mg_len & 2) && mg->mg_obj == sv))
4024 sv_setpviv(SV *sv, IV iv)
4027 char buf[TYPE_DIGITS(UV)];
4028 char *ptr = buf + sizeof(buf);
4033 sv_setpvn(sv, "", 0);
4042 *--ptr = '0' + (uv % 10);
4044 len = (buf + sizeof(buf)) - ptr;
4045 /* taking advantage of SvCUR(sv) == 0 */
4046 SvGROW(sv, sign + len + 1);
4050 memcpy(p, ptr, len);
4053 SvCUR(sv) = p - SvPVX(sv);
4058 sv_setpvf(SV *sv, const char* pat, ...)
4062 sv_setpvf(sv, pat, va_alist)
4070 va_start(args, pat);
4074 sv_vsetpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
4080 sv_catpvf(SV *sv, const char* pat, ...)
4084 sv_catpvf(sv, pat, va_alist)
4092 va_start(args, pat);
4096 sv_vcatpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
4101 sv_vsetpvfn(SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *used_locale)
4103 sv_setpvn(sv, "", 0);
4104 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, used_locale);
4108 sv_vcatpvfn(SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *used_locale)
4116 static char nullstr[] = "(null)";
4118 /* no matter what, this is a string now */
4119 (void)SvPV_force(sv, origlen);
4121 /* special-case "", "%s", and "%_" */
4124 if (patlen == 2 && pat[0] == '%') {
4128 char *s = va_arg(*args, char*);
4129 sv_catpv(sv, s ? s : nullstr);
4131 else if (svix < svmax)
4132 sv_catsv(sv, *svargs);
4136 sv_catsv(sv, va_arg(*args, SV*));
4139 /* See comment on '_' below */
4144 patend = (char*)pat + patlen;
4145 for (p = (char*)pat; p < patend; p = q) {
4153 bool has_precis = FALSE;
4157 STRLEN esignlen = 0;
4159 char *eptr = Nullch;
4161 char ebuf[TYPE_DIGITS(int) * 2 + 16]; /* large enough for "%#.#f" */
4163 static char *efloatbuf = Nullch;
4164 static STRLEN efloatsize = 0;
4176 for (q = p; q < patend && *q != '%'; ++q) ;
4178 sv_catpvn(sv, p, q - p);
4216 case '1': case '2': case '3':
4217 case '4': case '5': case '6':
4218 case '7': case '8': case '9':
4221 width = width * 10 + (*q++ - '0');
4226 i = va_arg(*args, int);
4228 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
4230 width = (i < 0) ? -i : i;
4241 i = va_arg(*args, int);
4243 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
4244 precis = (i < 0) ? 0 : i;
4250 precis = precis * 10 + (*q++ - '0');
4259 #if 0 /* when quads have better support within Perl */
4260 if (*(q + 1) == 'l') {
4286 c = va_arg(*args, int);
4288 c = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
4295 eptr = va_arg(*args, char*);
4297 elen = strlen(eptr);
4300 elen = sizeof nullstr - 1;
4303 else if (svix < svmax)
4304 eptr = SvPVx(svargs[svix++], elen);
4309 * The "%_" hack might have to be changed someday,
4310 * if ISO or ANSI decide to use '_' for something.
4311 * So we keep it hidden from users' code.
4315 eptr = SvPVx(va_arg(*args, SV*), elen);
4318 if (has_precis && elen > precis)
4326 uv = (UV)va_arg(*args, void*);
4328 uv = (svix < svmax) ? (UV)svargs[svix++] : 0;
4339 case 'h': iv = (short)va_arg(*args, int); break;
4340 default: iv = va_arg(*args, int); break;
4341 case 'l': iv = va_arg(*args, long); break;
4342 case 'V': iv = va_arg(*args, IV); break;
4346 iv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
4348 case 'h': iv = (short)iv; break;
4349 default: iv = (int)iv; break;
4350 case 'l': iv = (long)iv; break;
4357 esignbuf[esignlen++] = plus;
4361 esignbuf[esignlen++] = '-';
4387 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
4388 default: uv = va_arg(*args, unsigned); break;
4389 case 'l': uv = va_arg(*args, unsigned long); break;
4390 case 'V': uv = va_arg(*args, UV); break;
4394 uv = (svix < svmax) ? SvUVx(svargs[svix++]) : 0;
4396 case 'h': uv = (unsigned short)uv; break;
4397 default: uv = (unsigned)uv; break;
4398 case 'l': uv = (unsigned long)uv; break;
4404 eptr = ebuf + sizeof ebuf;
4408 p = (c == 'X') ? "0123456789ABCDEF" : "0123456789abcdef";
4414 esignbuf[esignlen++] = '0';
4415 esignbuf[esignlen++] = c; /* 'x' or 'X' */
4421 *--eptr = '0' + dig;
4423 if (alt && *eptr != '0')
4426 default: /* it had better be ten or less */
4429 *--eptr = '0' + dig;
4430 } while (uv /= base);
4433 elen = (ebuf + sizeof ebuf) - eptr;
4434 if (has_precis && precis > elen)
4435 zeros = precis - elen;
4438 /* FLOATING POINT */
4441 c = 'f'; /* maybe %F isn't supported here */
4447 /* This is evil, but floating point is even more evil */
4450 nv = va_arg(*args, double);
4452 nv = (svix < svmax) ? SvNVx(svargs[svix++]) : 0.0;
4455 if (c != 'e' && c != 'E') {
4457 (void)frexp(nv, &i);
4458 if (i == PERL_INT_MIN)
4459 die("panic: frexp");
4461 need = BIT_DIGITS(i);
4463 need += has_precis ? precis : 6; /* known default */
4467 need += 20; /* fudge factor */
4468 if (efloatsize < need) {
4469 Safefree(efloatbuf);
4470 efloatsize = need + 20; /* more fudge */
4471 New(906, efloatbuf, efloatsize, char);
4474 eptr = ebuf + sizeof ebuf;
4479 do { *--eptr = '0' + (base % 10); } while (base /= 10);
4484 do { *--eptr = '0' + (base % 10); } while (base /= 10);
4496 (void)sprintf(efloatbuf, eptr, nv);
4499 elen = strlen(efloatbuf);
4503 * User-defined locales may include arbitrary characters.
4504 * And, unfortunately, some system may alloc the "C" locale
4505 * to be overridden by a malicious user.
4508 *used_locale = TRUE;
4509 #endif /* LC_NUMERIC */
4516 i = SvCUR(sv) - origlen;
4519 case 'h': *(va_arg(*args, short*)) = i; break;
4520 default: *(va_arg(*args, int*)) = i; break;
4521 case 'l': *(va_arg(*args, long*)) = i; break;
4522 case 'V': *(va_arg(*args, IV*)) = i; break;
4525 else if (svix < svmax)
4526 sv_setuv(svargs[svix++], (UV)i);
4527 continue; /* not "break" */
4533 if (!args && dowarn &&
4534 (op->op_type == OP_PRTF || op->op_type == OP_SPRINTF)) {
4535 SV *msg = sv_newmortal();
4536 sv_setpvf(msg, "Invalid conversion in %s: ",
4537 (op->op_type == OP_PRTF) ? "printf" : "sprintf");
4539 sv_catpvf(msg, isPRINT(c) ? "\"%%%c\"" : "\"%%\\%03o\"",
4542 sv_catpv(msg, "end of string");
4543 warn("%_", msg); /* yes, this is reentrant */
4546 /* output mangled stuff ... */
4552 /* ... right here, because formatting flags should not apply */
4553 SvGROW(sv, SvCUR(sv) + elen + 1);
4555 memcpy(p, eptr, elen);
4558 SvCUR(sv) = p - SvPVX(sv);
4559 continue; /* not "break" */
4562 have = esignlen + zeros + elen;
4563 need = (have > width ? have : width);
4566 SvGROW(sv, SvCUR(sv) + need + 1);
4568 if (esignlen && fill == '0') {
4569 for (i = 0; i < esignlen; i++)
4573 memset(p, fill, gap);
4576 if (esignlen && fill != '0') {
4577 for (i = 0; i < esignlen; i++)
4581 for (i = zeros; i; i--)
4585 memcpy(p, eptr, elen);
4589 memset(p, ' ', gap);
4593 SvCUR(sv) = p - SvPVX(sv);
4601 SV *d = sv_newmortal();
4607 PerlIO_printf(Perl_debug_log, "SV = 0\n");
4611 flags = SvFLAGS(sv);
4614 sv_setpvf(d, "(0x%lx)\n REFCNT = %ld\n FLAGS = (",
4615 (unsigned long)SvANY(sv), (long)SvREFCNT(sv));
4616 if (flags & SVs_PADBUSY) sv_catpv(d, "PADBUSY,");
4617 if (flags & SVs_PADTMP) sv_catpv(d, "PADTMP,");
4618 if (flags & SVs_PADMY) sv_catpv(d, "PADMY,");
4619 if (flags & SVs_TEMP) sv_catpv(d, "TEMP,");
4620 if (flags & SVs_OBJECT) sv_catpv(d, "OBJECT,");
4621 if (flags & SVs_GMG) sv_catpv(d, "GMG,");
4622 if (flags & SVs_SMG) sv_catpv(d, "SMG,");
4623 if (flags & SVs_RMG) sv_catpv(d, "RMG,");
4625 if (flags & SVf_IOK) sv_catpv(d, "IOK,");
4626 if (flags & SVf_NOK) sv_catpv(d, "NOK,");
4627 if (flags & SVf_POK) sv_catpv(d, "POK,");
4628 if (flags & SVf_ROK) sv_catpv(d, "ROK,");
4629 if (flags & SVf_OOK) sv_catpv(d, "OOK,");
4630 if (flags & SVf_FAKE) sv_catpv(d, "FAKE,");
4631 if (flags & SVf_READONLY) sv_catpv(d, "READONLY,");
4634 if (flags & SVf_AMAGIC) sv_catpv(d, "OVERLOAD,");
4635 #endif /* OVERLOAD */
4636 if (flags & SVp_IOK) sv_catpv(d, "pIOK,");
4637 if (flags & SVp_NOK) sv_catpv(d, "pNOK,");
4638 if (flags & SVp_POK) sv_catpv(d, "pPOK,");
4639 if (flags & SVp_SCREAM) sv_catpv(d, "SCREAM,");
4644 if (CvANON(sv)) sv_catpv(d, "ANON,");
4645 if (CvUNIQUE(sv)) sv_catpv(d, "UNIQUE,");
4646 if (CvCLONE(sv)) sv_catpv(d, "CLONE,");
4647 if (CvCLONED(sv)) sv_catpv(d, "CLONED,");
4648 if (CvNODEBUG(sv)) sv_catpv(d, "NODEBUG,");
4651 if (HvSHAREKEYS(sv)) sv_catpv(d, "SHAREKEYS,");
4652 if (HvLAZYDEL(sv)) sv_catpv(d, "LAZYDEL,");
4655 if (GvINTRO(sv)) sv_catpv(d, "INTRO,");
4656 if (GvMULTI(sv)) sv_catpv(d, "MULTI,");
4657 if (GvASSUMECV(sv)) sv_catpv(d, "ASSUMECV,");
4658 if (GvIMPORTED(sv)) {
4659 sv_catpv(d, "IMPORT");
4660 if (GvIMPORTED(sv) == GVf_IMPORTED)
4661 sv_catpv(d, "ALL,");
4664 if (GvIMPORTED_SV(sv)) sv_catpv(d, " SV");
4665 if (GvIMPORTED_AV(sv)) sv_catpv(d, " AV");
4666 if (GvIMPORTED_HV(sv)) sv_catpv(d, " HV");
4667 if (GvIMPORTED_CV(sv)) sv_catpv(d, " CV");
4672 if (SvTAIL(sv)) sv_catpv(d, "TAIL,");
4673 if (SvCOMPILED(sv)) sv_catpv(d, "COMPILED,");
4677 if (*(SvEND(d) - 1) == ',')
4678 SvPVX(d)[--SvCUR(d)] = '\0';
4682 PerlIO_printf(Perl_debug_log, "SV = ");
4685 PerlIO_printf(Perl_debug_log, "NULL%s\n", s);
4688 PerlIO_printf(Perl_debug_log, "IV%s\n", s);
4691 PerlIO_printf(Perl_debug_log, "NV%s\n", s);
4694 PerlIO_printf(Perl_debug_log, "RV%s\n", s);
4697 PerlIO_printf(Perl_debug_log, "PV%s\n", s);
4700 PerlIO_printf(Perl_debug_log, "PVIV%s\n", s);
4703 PerlIO_printf(Perl_debug_log, "PVNV%s\n", s);
4706 PerlIO_printf(Perl_debug_log, "PVBM%s\n", s);
4709 PerlIO_printf(Perl_debug_log, "PVMG%s\n", s);
4712 PerlIO_printf(Perl_debug_log, "PVLV%s\n", s);
4715 PerlIO_printf(Perl_debug_log, "PVAV%s\n", s);
4718 PerlIO_printf(Perl_debug_log, "PVHV%s\n", s);
4721 PerlIO_printf(Perl_debug_log, "PVCV%s\n", s);
4724 PerlIO_printf(Perl_debug_log, "PVGV%s\n", s);
4727 PerlIO_printf(Perl_debug_log, "PVFM%s\n", s);
4730 PerlIO_printf(Perl_debug_log, "PVIO%s\n", s);
4733 PerlIO_printf(Perl_debug_log, "UNKNOWN%s\n", s);
4736 if (type >= SVt_PVIV || type == SVt_IV)
4737 PerlIO_printf(Perl_debug_log, " IV = %ld\n", (long)SvIVX(sv));
4738 if (type >= SVt_PVNV || type == SVt_NV) {
4739 SET_NUMERIC_STANDARD();
4740 PerlIO_printf(Perl_debug_log, " NV = %.*g\n", DBL_DIG, SvNVX(sv));
4743 PerlIO_printf(Perl_debug_log, " RV = 0x%lx\n", (long)SvRV(sv));
4749 if (type <= SVt_PVLV) {
4751 PerlIO_printf(Perl_debug_log, " PV = 0x%lx \"%s\"\n CUR = %ld\n LEN = %ld\n",
4752 (long)SvPVX(sv), SvPVX(sv), (long)SvCUR(sv), (long)SvLEN(sv));
4754 PerlIO_printf(Perl_debug_log, " PV = 0\n");
4756 if (type >= SVt_PVMG) {
4758 PerlIO_printf(Perl_debug_log, " MAGIC = 0x%lx\n", (long)SvMAGIC(sv));
4761 PerlIO_printf(Perl_debug_log, " STASH = \"%s\"\n", HvNAME(SvSTASH(sv)));
4765 PerlIO_printf(Perl_debug_log, " TYPE = %c\n", LvTYPE(sv));
4766 PerlIO_printf(Perl_debug_log, " TARGOFF = %ld\n", (long)LvTARGOFF(sv));
4767 PerlIO_printf(Perl_debug_log, " TARGLEN = %ld\n", (long)LvTARGLEN(sv));
4768 PerlIO_printf(Perl_debug_log, " TARG = 0x%lx\n", (long)LvTARG(sv));
4769 sv_dump(LvTARG(sv));
4772 PerlIO_printf(Perl_debug_log, " ARRAY = 0x%lx\n", (long)AvARRAY(sv));
4773 PerlIO_printf(Perl_debug_log, " ALLOC = 0x%lx\n", (long)AvALLOC(sv));
4774 PerlIO_printf(Perl_debug_log, " FILL = %ld\n", (long)AvFILL(sv));
4775 PerlIO_printf(Perl_debug_log, " MAX = %ld\n", (long)AvMAX(sv));
4776 PerlIO_printf(Perl_debug_log, " ARYLEN = 0x%lx\n", (long)AvARYLEN(sv));
4777 flags = AvFLAGS(sv);
4779 if (flags & AVf_REAL) sv_catpv(d, ",REAL");
4780 if (flags & AVf_REIFY) sv_catpv(d, ",REIFY");
4781 if (flags & AVf_REUSED) sv_catpv(d, ",REUSED");
4782 PerlIO_printf(Perl_debug_log, " FLAGS = (%s)\n",
4783 SvCUR(d) ? SvPVX(d) + 1 : "");
4786 PerlIO_printf(Perl_debug_log, " ARRAY = 0x%lx\n",(long)HvARRAY(sv));
4787 PerlIO_printf(Perl_debug_log, " KEYS = %ld\n", (long)HvKEYS(sv));
4788 PerlIO_printf(Perl_debug_log, " FILL = %ld\n", (long)HvFILL(sv));
4789 PerlIO_printf(Perl_debug_log, " MAX = %ld\n", (long)HvMAX(sv));
4790 PerlIO_printf(Perl_debug_log, " RITER = %ld\n", (long)HvRITER(sv));
4791 PerlIO_printf(Perl_debug_log, " EITER = 0x%lx\n",(long) HvEITER(sv));
4793 PerlIO_printf(Perl_debug_log, " PMROOT = 0x%lx\n",(long)HvPMROOT(sv));
4795 PerlIO_printf(Perl_debug_log, " NAME = \"%s\"\n", HvNAME(sv));
4799 PerlIO_printf(Perl_debug_log, " PROTOTYPE = \"%s\"\n", SvPV(sv,na));
4802 PerlIO_printf(Perl_debug_log, " STASH = 0x%lx\n", (long)CvSTASH(sv));
4803 PerlIO_printf(Perl_debug_log, " START = 0x%lx\n", (long)CvSTART(sv));
4804 PerlIO_printf(Perl_debug_log, " ROOT = 0x%lx\n", (long)CvROOT(sv));
4805 PerlIO_printf(Perl_debug_log, " XSUB = 0x%lx\n", (long)CvXSUB(sv));
4806 PerlIO_printf(Perl_debug_log, " XSUBANY = %ld\n", (long)CvXSUBANY(sv).any_i32);
4807 PerlIO_printf(Perl_debug_log, " GV = 0x%lx", (long)CvGV(sv));
4808 if (CvGV(sv) && GvNAME(CvGV(sv))) {
4809 PerlIO_printf(Perl_debug_log, " \"%s\"\n", GvNAME(CvGV(sv)));
4811 PerlIO_printf(Perl_debug_log, "\n");
4813 PerlIO_printf(Perl_debug_log, " FILEGV = 0x%lx\n", (long)CvFILEGV(sv));
4814 PerlIO_printf(Perl_debug_log, " DEPTH = %ld\n", (long)CvDEPTH(sv));
4815 PerlIO_printf(Perl_debug_log, " PADLIST = 0x%lx\n", (long)CvPADLIST(sv));
4816 PerlIO_printf(Perl_debug_log, " OUTSIDE = 0x%lx\n", (long)CvOUTSIDE(sv));
4818 PerlIO_printf(Perl_debug_log, " MUTEXP = 0x%lx\n", (long)CvMUTEXP(sv));
4819 PerlIO_printf(Perl_debug_log, " OWNER = 0x%lx\n", (long)CvOWNER(sv));
4820 #endif /* USE_THREADS */
4821 PerlIO_printf(Perl_debug_log, " FLAGS = 0x%lx\n",
4822 (unsigned long)CvFLAGS(sv));
4823 if (type == SVt_PVFM)
4824 PerlIO_printf(Perl_debug_log, " LINES = %ld\n", (long)FmLINES(sv));
4827 PerlIO_printf(Perl_debug_log, " NAME = \"%s\"\n", GvNAME(sv));
4828 PerlIO_printf(Perl_debug_log, " NAMELEN = %ld\n", (long)GvNAMELEN(sv));
4829 PerlIO_printf(Perl_debug_log, " STASH = \"%s\"\n", HvNAME(GvSTASH(sv)));
4830 PerlIO_printf(Perl_debug_log, " GP = 0x%lx\n", (long)GvGP(sv));
4831 PerlIO_printf(Perl_debug_log, " SV = 0x%lx\n", (long)GvSV(sv));
4832 PerlIO_printf(Perl_debug_log, " REFCNT = %ld\n", (long)GvREFCNT(sv));
4833 PerlIO_printf(Perl_debug_log, " IO = 0x%lx\n", (long)GvIOp(sv));
4834 PerlIO_printf(Perl_debug_log, " FORM = 0x%lx\n", (long)GvFORM(sv));
4835 PerlIO_printf(Perl_debug_log, " AV = 0x%lx\n", (long)GvAV(sv));
4836 PerlIO_printf(Perl_debug_log, " HV = 0x%lx\n", (long)GvHV(sv));
4837 PerlIO_printf(Perl_debug_log, " CV = 0x%lx\n", (long)GvCV(sv));
4838 PerlIO_printf(Perl_debug_log, " CVGEN = 0x%lx\n", (long)GvCVGEN(sv));
4839 PerlIO_printf(Perl_debug_log, " LASTEXPR = %ld\n", (long)GvLASTEXPR(sv));
4840 PerlIO_printf(Perl_debug_log, " LINE = %ld\n", (long)GvLINE(sv));
4841 PerlIO_printf(Perl_debug_log, " FILEGV = 0x%lx\n", (long)GvFILEGV(sv));
4842 PerlIO_printf(Perl_debug_log, " EGV = 0x%lx\n", (long)GvEGV(sv));
4845 PerlIO_printf(Perl_debug_log, " IFP = 0x%lx\n", (long)IoIFP(sv));
4846 PerlIO_printf(Perl_debug_log, " OFP = 0x%lx\n", (long)IoOFP(sv));
4847 PerlIO_printf(Perl_debug_log, " DIRP = 0x%lx\n", (long)IoDIRP(sv));
4848 PerlIO_printf(Perl_debug_log, " LINES = %ld\n", (long)IoLINES(sv));
4849 PerlIO_printf(Perl_debug_log, " PAGE = %ld\n", (long)IoPAGE(sv));
4850 PerlIO_printf(Perl_debug_log, " PAGE_LEN = %ld\n", (long)IoPAGE_LEN(sv));
4851 PerlIO_printf(Perl_debug_log, " LINES_LEFT = %ld\n", (long)IoLINES_LEFT(sv));
4852 PerlIO_printf(Perl_debug_log, " TOP_NAME = \"%s\"\n", IoTOP_NAME(sv));
4853 PerlIO_printf(Perl_debug_log, " TOP_GV = 0x%lx\n", (long)IoTOP_GV(sv));
4854 PerlIO_printf(Perl_debug_log, " FMT_NAME = \"%s\"\n", IoFMT_NAME(sv));
4855 PerlIO_printf(Perl_debug_log, " FMT_GV = 0x%lx\n", (long)IoFMT_GV(sv));
4856 PerlIO_printf(Perl_debug_log, " BOTTOM_NAME = \"%s\"\n", IoBOTTOM_NAME(sv));
4857 PerlIO_printf(Perl_debug_log, " BOTTOM_GV = 0x%lx\n", (long)IoBOTTOM_GV(sv));
4858 PerlIO_printf(Perl_debug_log, " SUBPROCESS = %ld\n", (long)IoSUBPROCESS(sv));
4859 PerlIO_printf(Perl_debug_log, " TYPE = %c\n", IoTYPE(sv));
4860 PerlIO_printf(Perl_debug_log, " FLAGS = 0x%lx\n", (long)IoFLAGS(sv));