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); \
215 for (sva = sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
217 svend = &sva[SvREFCNT(sva)];
218 if (p >= sv && p < svend)
222 warn("Attempt to free non-arena SV: 0x%lx", (unsigned long)p);
229 #else /* ! DEBUGGING */
231 #define del_SV(p) plant_SV(p)
233 #endif /* DEBUGGING */
236 sv_add_arena(ptr, size, flags)
244 Zero(sva, size, char);
246 /* The first SV in an arena isn't an SV. */
247 SvANY(sva) = (void *) sv_arenaroot; /* ptr to next arena */
248 SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */
249 SvFLAGS(sva) = flags; /* FAKE if not to be freed */
254 svend = &sva[SvREFCNT(sva) - 1];
257 SvANY(sv) = (void *)(SV*)(sv + 1);
258 SvFLAGS(sv) = SVTYPEMASK;
262 SvFLAGS(sv) = SVTYPEMASK;
265 /* sv_mutex must be held while calling more_sv() */
272 sv_add_arena(nice_chunk, nice_chunk_size, 0);
276 char *chunk; /* must use New here to match call to */
277 New(704,chunk,1008,char); /* Safefree() in sv_free_arenas() */
278 sv_add_arena(chunk, 1008, 0);
292 for (sva = sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
293 svend = &sva[SvREFCNT(sva)];
294 for (sv = sva + 1; sv < svend; ++sv) {
295 if (SvTYPE(sv) != SVTYPEMASK)
307 if (SvTYPE(sv) != SVTYPEMASK) {
308 /* XXX Perhaps this ought to go to Perl_debug_log, if DEBUGGING. */
309 PerlIO_printf(PerlIO_stderr(), "****\n");
317 visit(do_report_used);
326 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
327 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
333 /* XXX Might want to check arrays, etc. */
336 #ifndef DISABLE_DESTRUCTOR_KLUDGE
338 do_clean_named_objs(sv)
341 if (SvTYPE(sv) == SVt_PVGV && GvSV(sv))
342 do_clean_objs(GvSV(sv));
346 static bool in_clean_objs = FALSE;
351 in_clean_objs = TRUE;
352 #ifndef DISABLE_DESTRUCTOR_KLUDGE
353 visit(do_clean_named_objs);
355 visit(do_clean_objs);
356 in_clean_objs = FALSE;
363 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops:\n "), sv_dump(sv));)
364 SvFLAGS(sv) |= SVf_BREAK;
368 static bool in_clean_all = FALSE;
375 in_clean_all = FALSE;
384 /* Free arenas here, but be careful about fake ones. (We assume
385 contiguity of the fake ones with the corresponding real ones.) */
387 for (sva = sv_arenaroot; sva; sva = svanext) {
388 svanext = (SV*) SvANY(sva);
389 while (svanext && SvFAKE(svanext))
390 svanext = (SV*) SvANY(svanext);
393 Safefree((void *)sva);
407 * See comment in more_xiv() -- RAM.
409 xiv_root = (IV**)*xiv;
410 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));
461 double* xnv = (double*)((char*)(p) + sizeof(XPVIV));
462 *(double**)xnv = xnv_root;
469 register double* xnv;
470 register double* xnvend;
471 xnv = (double*)safemalloc(1008);
472 xnvend = &xnv[1008 / sizeof(double) - 1];
473 xnv += (sizeof(XPVIV) - 1) / sizeof(double) + 1; /* fudge by sizeof XPVIV */
475 while (xnv < xnvend) {
476 *(double**)xnv = (double*)(xnv + 1);
489 xrv_root = (XRV*)xrv->xrv_rv;
499 p->xrv_rv = (SV*)xrv_root;
507 register XRV* xrvend;
508 xrv_root = (XRV*)safemalloc(1008);
510 xrvend = &xrv[1008 / sizeof(XRV) - 1];
511 while (xrv < xrvend) {
512 xrv->xrv_rv = (SV*)(xrv + 1);
525 xpv_root = (XPV*)xpv->xpv_pv;
535 p->xpv_pv = (char*)xpv_root;
543 register XPV* xpvend;
544 xpv_root = (XPV*)safemalloc(1008);
546 xpvend = &xpv[1008 / sizeof(XPV) - 1];
547 while (xpv < xpvend) {
548 xpv->xpv_pv = (char*)(xpv + 1);
556 #define new_XIV() (void*)safemalloc(sizeof(XPVIV))
557 #define del_XIV(p) free((char*)p)
559 #define new_XIV() (void*)new_xiv()
560 #define del_XIV(p) del_xiv(p)
564 #define new_XNV() (void*)safemalloc(sizeof(XPVNV))
565 #define del_XNV(p) free((char*)p)
567 #define new_XNV() (void*)new_xnv()
568 #define del_XNV(p) del_xnv(p)
572 #define new_XRV() (void*)safemalloc(sizeof(XRV))
573 #define del_XRV(p) free((char*)p)
575 #define new_XRV() (void*)new_xrv()
576 #define del_XRV(p) del_xrv(p)
580 #define new_XPV() (void*)safemalloc(sizeof(XPV))
581 #define del_XPV(p) free((char*)p)
583 #define new_XPV() (void*)new_xpv()
584 #define del_XPV(p) del_xpv(p)
587 #define new_XPVIV() (void*)safemalloc(sizeof(XPVIV))
588 #define del_XPVIV(p) free((char*)p)
590 #define new_XPVNV() (void*)safemalloc(sizeof(XPVNV))
591 #define del_XPVNV(p) free((char*)p)
593 #define new_XPVMG() (void*)safemalloc(sizeof(XPVMG))
594 #define del_XPVMG(p) free((char*)p)
596 #define new_XPVLV() (void*)safemalloc(sizeof(XPVLV))
597 #define del_XPVLV(p) free((char*)p)
599 #define new_XPVAV() (void*)safemalloc(sizeof(XPVAV))
600 #define del_XPVAV(p) free((char*)p)
602 #define new_XPVHV() (void*)safemalloc(sizeof(XPVHV))
603 #define del_XPVHV(p) free((char*)p)
605 #define new_XPVCV() (void*)safemalloc(sizeof(XPVCV))
606 #define del_XPVCV(p) free((char*)p)
608 #define new_XPVGV() (void*)safemalloc(sizeof(XPVGV))
609 #define del_XPVGV(p) free((char*)p)
611 #define new_XPVBM() (void*)safemalloc(sizeof(XPVBM))
612 #define del_XPVBM(p) free((char*)p)
614 #define new_XPVFM() (void*)safemalloc(sizeof(XPVFM))
615 #define del_XPVFM(p) free((char*)p)
617 #define new_XPVIO() (void*)safemalloc(sizeof(XPVIO))
618 #define del_XPVIO(p) free((char*)p)
633 if (SvTYPE(sv) == mt)
639 switch (SvTYPE(sv)) {
654 nv = (double)SvIVX(sv);
660 else if (mt < SVt_PVIV)
677 pv = (char*)SvRV(sv);
681 nv = (double)(unsigned long)pv;
697 else if (mt == SVt_NV)
708 del_XPVIV(SvANY(sv));
718 del_XPVNV(SvANY(sv));
728 del_XPVMG(SvANY(sv));
731 croak("Can't upgrade that kind of scalar");
736 croak("Can't upgrade to undef");
738 SvANY(sv) = new_XIV();
742 SvANY(sv) = new_XNV();
746 SvANY(sv) = new_XRV();
750 SvANY(sv) = new_XPV();
756 SvANY(sv) = new_XPVIV();
766 SvANY(sv) = new_XPVNV();
774 SvANY(sv) = new_XPVMG();
784 SvANY(sv) = new_XPVLV();
798 SvANY(sv) = new_XPVAV();
813 SvANY(sv) = new_XPVHV();
829 SvANY(sv) = new_XPVCV();
830 Zero(SvANY(sv), 1, XPVCV);
840 SvANY(sv) = new_XPVGV();
855 SvANY(sv) = new_XPVBM();
868 SvANY(sv) = new_XPVFM();
869 Zero(SvANY(sv), 1, XPVFM);
879 SvANY(sv) = new_XPVIO();
880 Zero(SvANY(sv), 1, XPVIO);
891 SvFLAGS(sv) &= ~SVTYPEMASK;
901 SV *t = sv_newmortal();
911 else if (sv == (SV*)0x55555555 || SvTYPE(sv) == 'U') {
915 else if (sv == &sv_undef || sv == &sv_no || sv == &sv_yes) {
916 if (sv == &sv_undef) {
917 sv_catpv(t, "SV_UNDEF");
918 if (!(SvFLAGS(sv) & (SVf_OK|SVf_OOK|SVs_OBJECT|
919 SVs_GMG|SVs_SMG|SVs_RMG)) &&
923 else if (sv == &sv_no) {
924 sv_catpv(t, "SV_NO");
925 if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
926 SVs_GMG|SVs_SMG|SVs_RMG)) &&
927 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
934 sv_catpv(t, "SV_YES");
935 if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
936 SVs_GMG|SVs_SMG|SVs_RMG)) &&
937 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
940 SvPVX(sv) && *SvPVX(sv) == '1' &&
946 else if (SvREFCNT(sv) == 0) {
952 if (SvCUR(t) + unref > 10) {
953 SvCUR(t) = unref + 3;
961 switch (SvTYPE(sv)) {
963 sv_catpv(t, "FREED");
967 sv_catpv(t, "UNDEF");
1001 sv_catpvf(t, "CV(%s)", GvNAME(CvGV(sv)));
1003 sv_catpv(t, "CV()");
1021 sv_catpv(t, "(null)");
1023 sv_catpvf(t, "(%ld+\"%.127s\")",(long)SvIVX(sv),SvPVX(sv));
1025 sv_catpvf(t, "(\"%.127s\")",SvPVX(sv));
1027 else if (SvNOKp(sv)) {
1028 SET_NUMERIC_STANDARD();
1029 sv_catpvf(t, "(%g)",SvNVX(sv));
1031 else if (SvIOKp(sv))
1032 sv_catpvf(t, "(%ld)",(long)SvIVX(sv));
1051 char *s = SvPVX(sv);
1052 SvLEN(sv) += SvIVX(sv);
1053 SvPVX(sv) -= SvIVX(sv);
1055 Move(s, SvPVX(sv), SvCUR(sv)+1, char);
1057 SvFLAGS(sv) &= ~SVf_OOK;
1065 register I32 newlen;
1067 unsigned long newlen;
1072 #ifdef HAS_64K_LIMIT
1073 if (newlen >= 0x10000) {
1074 PerlIO_printf(Perl_debug_log, "Allocation too large: %lx\n", newlen);
1077 #endif /* HAS_64K_LIMIT */
1080 if (SvTYPE(sv) < SVt_PV) {
1081 sv_upgrade(sv, SVt_PV);
1084 else if (SvOOK(sv)) { /* pv is offset? */
1087 if (newlen > SvLEN(sv))
1088 newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */
1092 if (newlen > SvLEN(sv)) { /* need more room? */
1094 Renew(s,newlen,char);
1096 New(703,s,newlen,char);
1098 SvLEN_set(sv, newlen);
1108 dTHR; /* just for taint */
1109 sv_check_thinkfirst(sv);
1110 switch (SvTYPE(sv)) {
1112 sv_upgrade(sv, SVt_IV);
1115 sv_upgrade(sv, SVt_PVNV);
1119 sv_upgrade(sv, SVt_PVIV);
1135 croak("Can't coerce %s to integer in %s", sv_reftype(sv,0),
1136 op_desc[op->op_type]);
1139 (void)SvIOK_only(sv); /* validate number */
1152 sv_setnv(sv, (double)u);
1160 dTHR; /* just for taint */
1161 sv_check_thinkfirst(sv);
1162 switch (SvTYPE(sv)) {
1165 sv_upgrade(sv, SVt_NV);
1171 sv_upgrade(sv, SVt_PVNV);
1178 (void)SvOOK_off(sv);
1193 croak("Can't coerce %s to number in %s", sv_reftype(sv,0),
1194 op_name[op->op_type]);
1198 (void)SvNOK_only(sv); /* validate number */
1210 char *limit = tmpbuf + sizeof(tmpbuf) - 8;
1211 /* each *s can expand to 4 chars + "...\0",
1212 i.e. need room for 8 chars */
1214 for (s = SvPVX(sv); *s && d < limit; s++) {
1216 if (ch & 128 && !isPRINT_LC(ch)) {
1225 else if (ch == '\r') {
1229 else if (ch == '\f') {
1233 else if (ch == '\\') {
1237 else if (isPRINT_LC(ch))
1252 warn("Argument \"%s\" isn't numeric in %s", tmpbuf,
1253 op_name[op->op_type]);
1255 warn("Argument \"%s\" isn't numeric", tmpbuf);
1264 if (SvGMAGICAL(sv)) {
1269 if (SvNVX(sv) < 0.0)
1270 return I_V(SvNVX(sv));
1272 return (IV) U_V(SvNVX(sv));
1274 if (SvPOKp(sv) && SvLEN(sv))
1277 dTHR; /* just for localizing */
1278 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1283 if (SvTHINKFIRST(sv)) {
1287 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
1288 return SvIV(tmpstr);
1289 #endif /* OVERLOAD */
1290 return (IV)SvRV(sv);
1292 if (SvREADONLY(sv)) {
1294 if (SvNVX(sv) < 0.0)
1295 return I_V(SvNVX(sv));
1297 return (IV) U_V(SvNVX(sv));
1299 if (SvPOKp(sv) && SvLEN(sv))
1306 switch (SvTYPE(sv)) {
1308 sv_upgrade(sv, SVt_IV);
1311 sv_upgrade(sv, SVt_PVIV);
1314 sv_upgrade(sv, SVt_PVNV);
1319 if (SvNVX(sv) < 0.0)
1320 SvIVX(sv) = I_V(SvNVX(sv));
1322 SvUVX(sv) = U_V(SvNVX(sv));
1324 else if (SvPOKp(sv) && SvLEN(sv)) {
1326 SvIVX(sv) = asIV(sv);
1330 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1334 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2iv(%ld)\n",
1335 (unsigned long)sv,(long)SvIVX(sv)));
1345 if (SvGMAGICAL(sv)) {
1350 return U_V(SvNVX(sv));
1351 if (SvPOKp(sv) && SvLEN(sv))
1354 dTHR; /* just for localizing */
1355 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1360 if (SvTHINKFIRST(sv)) {
1364 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
1365 return SvUV(tmpstr);
1366 #endif /* OVERLOAD */
1367 return (UV)SvRV(sv);
1369 if (SvREADONLY(sv)) {
1371 return U_V(SvNVX(sv));
1373 if (SvPOKp(sv) && SvLEN(sv))
1380 switch (SvTYPE(sv)) {
1382 sv_upgrade(sv, SVt_IV);
1385 sv_upgrade(sv, SVt_PVIV);
1388 sv_upgrade(sv, SVt_PVNV);
1393 SvUVX(sv) = U_V(SvNVX(sv));
1395 else if (SvPOKp(sv) && SvLEN(sv)) {
1397 SvUVX(sv) = asUV(sv);
1400 dTHR; /* just for localizing */
1401 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1405 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2uv(%lu)\n",
1406 (unsigned long)sv,SvUVX(sv)));
1416 if (SvGMAGICAL(sv)) {
1420 if (SvPOKp(sv) && SvLEN(sv)) {
1421 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1423 SET_NUMERIC_STANDARD();
1424 return atof(SvPVX(sv));
1427 return (double)SvIVX(sv);
1429 dTHR; /* just for localizing */
1430 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1435 if (SvTHINKFIRST(sv)) {
1439 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)))
1440 return SvNV(tmpstr);
1441 #endif /* OVERLOAD */
1442 return (double)(unsigned long)SvRV(sv);
1444 if (SvREADONLY(sv)) {
1445 if (SvPOKp(sv) && SvLEN(sv)) {
1446 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1448 SET_NUMERIC_STANDARD();
1449 return atof(SvPVX(sv));
1452 return (double)SvIVX(sv);
1458 if (SvTYPE(sv) < SVt_NV) {
1459 if (SvTYPE(sv) == SVt_IV)
1460 sv_upgrade(sv, SVt_PVNV);
1462 sv_upgrade(sv, SVt_NV);
1463 DEBUG_c(SET_NUMERIC_STANDARD());
1464 DEBUG_c(PerlIO_printf(Perl_debug_log,
1465 "0x%lx num(%g)\n",(unsigned long)sv,SvNVX(sv)));
1467 else if (SvTYPE(sv) < SVt_PVNV)
1468 sv_upgrade(sv, SVt_PVNV);
1470 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
1472 SvNVX(sv) = (double)SvIVX(sv);
1474 else if (SvPOKp(sv) && SvLEN(sv)) {
1475 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1477 SET_NUMERIC_STANDARD();
1478 SvNVX(sv) = atof(SvPVX(sv));
1482 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1487 DEBUG_c(SET_NUMERIC_STANDARD());
1488 DEBUG_c(PerlIO_printf(Perl_debug_log,
1489 "0x%lx 2nv(%g)\n",(unsigned long)sv,SvNVX(sv)));
1497 I32 numtype = looks_like_number(sv);
1501 return atol(SvPVX(sv));
1502 if (!numtype && dowarn)
1504 SET_NUMERIC_STANDARD();
1505 d = atof(SvPVX(sv));
1516 I32 numtype = looks_like_number(sv);
1520 return strtoul(SvPVX(sv), Null(char**), 10);
1522 if (!numtype && dowarn)
1524 SET_NUMERIC_STANDARD();
1525 return U_V(atof(SvPVX(sv)));
1529 looks_like_number(sv)
1533 register char *send;
1534 register char *sbegin;
1542 else if (SvPOKp(sv))
1543 sbegin = SvPV(sv, len);
1546 send = sbegin + len;
1551 if (*s == '+' || *s == '-')
1554 /* next must be digit or '.' */
1558 } while (isDIGIT(*s));
1561 while (isDIGIT(*s)) /* optional digits after "." */
1565 else if (*s == '.') {
1567 /* no digits before '.' means we need digits after it */
1571 } while (isDIGIT(*s));
1580 * we return 1 if the number can be converted to _integer_ with atol()
1581 * and 2 if you need (int)atof().
1585 /* we can have an optional exponent part */
1586 if (*s == 'e' || *s == 'E') {
1589 if (*s == '+' || *s == '-')
1594 } while (isDIGIT(*s));
1603 if (len == 10 && memEQ(sbegin, "0 but true", 10))
1616 char tmpbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
1622 if (SvGMAGICAL(sv)) {
1629 (void)sprintf(tmpbuf,"%ld",(long)SvIVX(sv));
1634 SET_NUMERIC_STANDARD();
1635 Gconvert(SvNVX(sv), DBL_DIG, 0, tmpbuf);
1640 dTHR; /* just for localizing */
1641 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1647 if (SvTHINKFIRST(sv)) {
1651 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)))
1652 return SvPV(tmpstr,*lp);
1653 #endif /* OVERLOAD */
1658 switch (SvTYPE(sv)) {
1667 case SVt_PVMG: s = "SCALAR"; break;
1668 case SVt_PVLV: s = "LVALUE"; break;
1669 case SVt_PVAV: s = "ARRAY"; break;
1670 case SVt_PVHV: s = "HASH"; break;
1671 case SVt_PVCV: s = "CODE"; break;
1672 case SVt_PVGV: s = "GLOB"; break;
1673 case SVt_PVFM: s = "FORMATLINE"; break;
1674 case SVt_PVIO: s = "IO"; break;
1675 default: s = "UNKNOWN"; break;
1679 sv_setpvf(tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
1682 sv_catpvf(tsv, "(0x%lx)", (unsigned long)sv);
1688 if (SvREADONLY(sv)) {
1690 SET_NUMERIC_STANDARD();
1691 Gconvert(SvNVX(sv), DBL_DIG, 0, tmpbuf);
1696 (void)sprintf(tmpbuf,"%ld",(long)SvIVX(sv));
1706 if (!SvUPGRADE(sv, SVt_PV))
1709 if (SvTYPE(sv) < SVt_PVNV)
1710 sv_upgrade(sv, SVt_PVNV);
1713 olderrno = errno; /* some Xenix systems wipe out errno here */
1715 if (SvNVX(sv) == 0.0)
1716 (void)strcpy(s,"0");
1720 SET_NUMERIC_STANDARD();
1721 Gconvert(SvNVX(sv), DBL_DIG, 0, s);
1724 #ifdef FIXNEGATIVEZERO
1725 if (*s == '-' && s[1] == '0' && !s[2])
1734 else if (SvIOKp(sv)) {
1735 U32 oldIOK = SvIOK(sv);
1736 if (SvTYPE(sv) < SVt_PVIV)
1737 sv_upgrade(sv, SVt_PVIV);
1738 olderrno = errno; /* some Xenix systems wipe out errno here */
1739 sv_setpviv(sv, SvIVX(sv));
1749 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1754 *lp = s - SvPVX(sv);
1757 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2pv(%s)\n",(unsigned long)sv,SvPVX(sv)));
1761 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
1762 /* Sneaky stuff here */
1766 tsv = newSVpv(tmpbuf, 0);
1782 len = strlen(tmpbuf);
1784 #ifdef FIXNEGATIVEZERO
1785 if (len == 2 && t[0] == '-' && t[1] == '0') {
1790 (void)SvUPGRADE(sv, SVt_PV);
1792 s = SvGROW(sv, len + 1);
1800 /* This function is only called on magical items */
1815 if (SvAMAGIC(sv) && (tmpsv = AMG_CALLun(sv,bool_)))
1816 return SvTRUE(tmpsv);
1818 #endif /* OVERLOAD */
1819 return SvRV(sv) != 0;
1822 register XPV* Xpvtmp;
1823 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
1824 (*Xpvtmp->xpv_pv > '0' ||
1825 Xpvtmp->xpv_cur > 1 ||
1826 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
1833 return SvIVX(sv) != 0;
1836 return SvNVX(sv) != 0.0;
1843 /* Note: sv_setsv() should not be called with a source string that needs
1844 * to be reused, since it may destroy the source string if it is marked
1854 register U32 sflags;
1860 sv_check_thinkfirst(dstr);
1863 stype = SvTYPE(sstr);
1864 dtype = SvTYPE(dstr);
1866 if (dtype == SVt_PVGV && (SvFLAGS(dstr) & SVf_FAKE)) {
1867 sv_unglob(dstr); /* so fake GLOB won't perpetuate */
1868 sv_setpvn(dstr, "", 0);
1869 (void)SvPOK_only(dstr);
1870 dtype = SvTYPE(dstr);
1875 #endif /* OVERLOAD */
1876 /* There's a lot of redundancy below but we're going for speed here */
1880 (void)SvOK_off(dstr);
1883 if (dtype != SVt_IV && dtype < SVt_PVIV) {
1885 sv_upgrade(dstr, SVt_IV);
1886 else if (dtype == SVt_NV)
1887 sv_upgrade(dstr, SVt_PVNV);
1889 sv_upgrade(dstr, SVt_PVIV);
1893 if (dtype != SVt_NV && dtype < SVt_PVNV) {
1895 sv_upgrade(dstr, SVt_NV);
1897 sv_upgrade(dstr, SVt_PVNV);
1902 sv_upgrade(dstr, SVt_RV);
1903 else if (dtype == SVt_PVGV &&
1904 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
1907 if (curcop->cop_stash != GvSTASH(dstr))
1908 GvIMPORTED_on(dstr);
1918 sv_upgrade(dstr, SVt_PV);
1921 if (dtype < SVt_PVIV)
1922 sv_upgrade(dstr, SVt_PVIV);
1925 if (dtype < SVt_PVNV)
1926 sv_upgrade(dstr, SVt_PVNV);
1930 sv_upgrade(dstr, SVt_PVLV);
1938 croak("Bizarre copy of %s in %s", sv_reftype(sstr, 0),
1939 op_name[op->op_type]);
1941 croak("Bizarre copy of %s", sv_reftype(sstr, 0));
1945 if (dtype <= SVt_PVGV) {
1947 if (dtype != SVt_PVGV) {
1948 char *name = GvNAME(sstr);
1949 STRLEN len = GvNAMELEN(sstr);
1950 sv_upgrade(dstr, SVt_PVGV);
1951 sv_magic(dstr, dstr, '*', name, len);
1952 GvSTASH(dstr) = GvSTASH(sstr);
1953 GvNAME(dstr) = savepvn(name, len);
1954 GvNAMELEN(dstr) = len;
1955 SvFAKE_on(dstr); /* can coerce to non-glob */
1957 /* ahem, death to those who redefine active sort subs */
1958 else if (curstack == sortstack
1959 && GvCV(dstr) && sortcop == CvSTART(GvCV(dstr)))
1960 croak("Can't redefine active sort subroutine %s",
1962 (void)SvOK_off(dstr);
1963 GvINTRO_off(dstr); /* one-shot flag */
1965 GvGP(dstr) = gp_ref(GvGP(sstr));
1967 if (curcop->cop_stash != GvSTASH(dstr))
1968 GvIMPORTED_on(dstr);
1975 if (SvGMAGICAL(sstr)) {
1977 if (SvTYPE(sstr) != stype) {
1978 stype = SvTYPE(sstr);
1979 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
1984 sv_upgrade(dstr, stype);
1987 sflags = SvFLAGS(sstr);
1989 if (sflags & SVf_ROK) {
1990 if (dtype >= SVt_PV) {
1991 if (dtype == SVt_PVGV) {
1993 SV *sref = SvREFCNT_inc(SvRV(sstr));
1995 int intro = GvINTRO(dstr);
1999 GvGP(dstr)->gp_refcnt--;
2000 GvINTRO_off(dstr); /* one-shot flag */
2001 Newz(602,gp, 1, GP);
2002 GvGP(dstr) = gp_ref(gp);
2003 GvSV(dstr) = NEWSV(72,0);
2004 GvLINE(dstr) = curcop->cop_line;
2005 GvEGV(dstr) = (GV*)dstr;
2008 switch (SvTYPE(sref)) {
2011 SAVESPTR(GvAV(dstr));
2013 dref = (SV*)GvAV(dstr);
2014 GvAV(dstr) = (AV*)sref;
2015 if (curcop->cop_stash != GvSTASH(dstr))
2016 GvIMPORTED_AV_on(dstr);
2020 SAVESPTR(GvHV(dstr));
2022 dref = (SV*)GvHV(dstr);
2023 GvHV(dstr) = (HV*)sref;
2024 if (curcop->cop_stash != GvSTASH(dstr))
2025 GvIMPORTED_HV_on(dstr);
2029 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2030 SvREFCNT_dec(GvCV(dstr));
2031 GvCV(dstr) = Nullcv;
2032 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2035 SAVESPTR(GvCV(dstr));
2038 dref = (SV*)GvCV(dstr);
2039 if (GvCV(dstr) != (CV*)sref) {
2040 CV* cv = GvCV(dstr);
2042 if (!GvCVGEN((GV*)dstr) &&
2043 (CvROOT(cv) || CvXSUB(cv)))
2045 /* ahem, death to those who redefine
2046 * active sort subs */
2047 if (curstack == sortstack &&
2048 sortcop == CvSTART(cv))
2050 "Can't redefine active sort subroutine %s",
2051 GvENAME((GV*)dstr));
2052 if (cv_const_sv(cv))
2053 warn("Constant subroutine %s redefined",
2054 GvENAME((GV*)dstr));
2056 warn("Subroutine %s redefined",
2057 GvENAME((GV*)dstr));
2059 cv_ckproto(cv, (GV*)dstr,
2060 SvPOK(sref) ? SvPVX(sref) : Nullch);
2062 GvCV(dstr) = (CV*)sref;
2063 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2064 GvASSUMECV_on(dstr);
2067 if (curcop->cop_stash != GvSTASH(dstr))
2068 GvIMPORTED_CV_on(dstr);
2072 SAVESPTR(GvIOp(dstr));
2074 dref = (SV*)GvIOp(dstr);
2075 GvIOp(dstr) = (IO*)sref;
2079 SAVESPTR(GvSV(dstr));
2081 dref = (SV*)GvSV(dstr);
2083 if (curcop->cop_stash != GvSTASH(dstr))
2084 GvIMPORTED_SV_on(dstr);
2095 (void)SvOOK_off(dstr); /* backoff */
2096 Safefree(SvPVX(dstr));
2097 SvLEN(dstr)=SvCUR(dstr)=0;
2100 (void)SvOK_off(dstr);
2101 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
2103 if (sflags & SVp_NOK) {
2105 SvNVX(dstr) = SvNVX(sstr);
2107 if (sflags & SVp_IOK) {
2108 (void)SvIOK_on(dstr);
2109 SvIVX(dstr) = SvIVX(sstr);
2112 if (SvAMAGIC(sstr)) {
2115 #endif /* OVERLOAD */
2117 else if (sflags & SVp_POK) {
2120 * Check to see if we can just swipe the string. If so, it's a
2121 * possible small lose on short strings, but a big win on long ones.
2122 * It might even be a win on short strings if SvPVX(dstr)
2123 * has to be allocated and SvPVX(sstr) has to be freed.
2126 if (SvTEMP(sstr) && /* slated for free anyway? */
2127 !(sflags & SVf_OOK)) /* and not involved in OOK hack? */
2129 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
2131 SvFLAGS(dstr) &= ~SVf_OOK;
2132 Safefree(SvPVX(dstr) - SvIVX(dstr));
2135 Safefree(SvPVX(dstr));
2137 (void)SvPOK_only(dstr);
2138 SvPV_set(dstr, SvPVX(sstr));
2139 SvLEN_set(dstr, SvLEN(sstr));
2140 SvCUR_set(dstr, SvCUR(sstr));
2142 (void)SvOK_off(sstr);
2143 SvPV_set(sstr, Nullch);
2148 else { /* have to copy actual string */
2149 STRLEN len = SvCUR(sstr);
2151 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2152 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2153 SvCUR_set(dstr, len);
2154 *SvEND(dstr) = '\0';
2155 (void)SvPOK_only(dstr);
2158 if (sflags & SVp_NOK) {
2160 SvNVX(dstr) = SvNVX(sstr);
2162 if (sflags & SVp_IOK) {
2163 (void)SvIOK_on(dstr);
2164 SvIVX(dstr) = SvIVX(sstr);
2167 else if (sflags & SVp_NOK) {
2168 SvNVX(dstr) = SvNVX(sstr);
2169 (void)SvNOK_only(dstr);
2171 (void)SvIOK_on(dstr);
2172 SvIVX(dstr) = SvIVX(sstr);
2175 else if (sflags & SVp_IOK) {
2176 (void)SvIOK_only(dstr);
2177 SvIVX(dstr) = SvIVX(sstr);
2180 (void)SvOK_off(dstr);
2186 sv_setpvn(sv,ptr,len)
2188 register const char *ptr;
2189 register STRLEN len;
2191 dTHR; /* just for taint */
2192 assert(len >= 0); /* STRLEN is probably unsigned, so this may
2193 elicit a warning, but it won't hurt. */
2194 sv_check_thinkfirst(sv);
2199 if (SvTYPE(sv) >= SVt_PV) {
2200 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
2203 else if (!sv_upgrade(sv, SVt_PV))
2205 SvGROW(sv, len + 1);
2206 Move(ptr,SvPVX(sv),len,char);
2209 (void)SvPOK_only(sv); /* validate pointer */
2216 register const char *ptr;
2218 dTHR; /* just for taint */
2219 register STRLEN len;
2221 sv_check_thinkfirst(sv);
2227 if (SvTYPE(sv) >= SVt_PV) {
2228 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
2231 else if (!sv_upgrade(sv, SVt_PV))
2233 SvGROW(sv, len + 1);
2234 Move(ptr,SvPVX(sv),len+1,char);
2236 (void)SvPOK_only(sv); /* validate pointer */
2241 sv_usepvn(sv,ptr,len)
2244 register STRLEN len;
2246 dTHR; /* just for taint */
2247 sv_check_thinkfirst(sv);
2248 if (!SvUPGRADE(sv, SVt_PV))
2255 Safefree(SvPVX(sv));
2256 Renew(ptr, len+1, char);
2259 SvLEN_set(sv, len+1);
2261 (void)SvPOK_only(sv); /* validate pointer */
2266 sv_check_thinkfirst(sv)
2269 if (SvTHINKFIRST(sv)) {
2270 if (SvREADONLY(sv)) {
2272 if (curcop != &compiling)
2281 sv_chop(sv,ptr) /* like set but assuming ptr is in sv */
2285 register STRLEN delta;
2287 if (!ptr || !SvPOKp(sv))
2289 sv_check_thinkfirst(sv);
2290 if (SvTYPE(sv) < SVt_PVIV)
2291 sv_upgrade(sv,SVt_PVIV);
2295 SvFLAGS(sv) |= SVf_OOK;
2297 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK);
2298 delta = ptr - SvPVX(sv);
2306 sv_catpvn(sv,ptr,len)
2309 register STRLEN len;
2311 dTHR; /* just for taint */
2315 junk = SvPV_force(sv, tlen);
2316 SvGROW(sv, tlen + len + 1);
2319 Move(ptr,SvPVX(sv)+tlen,len,char);
2322 (void)SvPOK_only(sv); /* validate pointer */
2335 if (s = SvPV(sstr, len))
2336 sv_catpvn(dstr,s,len);
2344 dTHR; /* just for taint */
2345 register STRLEN len;
2351 junk = SvPV_force(sv, tlen);
2353 SvGROW(sv, tlen + len + 1);
2356 Move(ptr,SvPVX(sv)+tlen,len+1,char);
2358 (void)SvPOK_only(sv); /* validate pointer */
2378 sv_upgrade(sv, SVt_PV);
2379 SvGROW(sv, len + 1);
2384 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
2387 sv_magic(sv, obj, how, name, namlen)
2396 if (SvREADONLY(sv)) {
2398 if (curcop != &compiling && !strchr("gBf", how))
2401 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
2402 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
2409 if (!SvUPGRADE(sv, SVt_PVMG))
2412 Newz(702,mg, 1, MAGIC);
2413 mg->mg_moremagic = SvMAGIC(sv);
2416 if (!obj || obj == sv || how == '#')
2420 mg->mg_obj = SvREFCNT_inc(obj);
2421 mg->mg_flags |= MGf_REFCOUNTED;
2424 mg->mg_len = namlen;
2427 mg->mg_ptr = savepvn(name, namlen);
2428 else if (namlen == HEf_SVKEY) {
2429 dTHR; /* just for SvREFCNT_inc */
2430 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
2435 mg->mg_virtual = &vtbl_sv;
2439 mg->mg_virtual = &vtbl_amagic;
2442 mg->mg_virtual = &vtbl_amagicelem;
2447 #endif /* OVERLOAD */
2449 mg->mg_virtual = &vtbl_bm;
2452 mg->mg_virtual = &vtbl_env;
2455 mg->mg_virtual = &vtbl_fm;
2458 mg->mg_virtual = &vtbl_envelem;
2461 mg->mg_virtual = &vtbl_mglob;
2464 mg->mg_virtual = &vtbl_isa;
2467 mg->mg_virtual = &vtbl_isaelem;
2470 mg->mg_virtual = &vtbl_nkeys;
2477 mg->mg_virtual = &vtbl_dbline;
2481 mg->mg_virtual = &vtbl_mutex;
2483 #endif /* USE_THREADS */
2484 #ifdef USE_LOCALE_COLLATE
2486 mg->mg_virtual = &vtbl_collxfrm;
2488 #endif /* USE_LOCALE_COLLATE */
2490 mg->mg_virtual = &vtbl_pack;
2494 mg->mg_virtual = &vtbl_packelem;
2497 mg->mg_virtual = &vtbl_sig;
2500 mg->mg_virtual = &vtbl_sigelem;
2503 mg->mg_virtual = &vtbl_taint;
2507 mg->mg_virtual = &vtbl_uvar;
2510 mg->mg_virtual = &vtbl_vec;
2513 mg->mg_virtual = &vtbl_substr;
2516 mg->mg_virtual = &vtbl_defelem;
2519 mg->mg_virtual = &vtbl_glob;
2522 mg->mg_virtual = &vtbl_arylen;
2525 mg->mg_virtual = &vtbl_pos;
2527 case '~': /* Reserved for use by extensions not perl internals. */
2528 /* Useful for attaching extension internal data to perl vars. */
2529 /* Note that multiple extensions may clash if magical scalars */
2530 /* etc holding private data from one are passed to another. */
2534 croak("Don't know how to handle magic of type '%c'", how);
2538 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
2542 sv_unmagic(sv, type)
2548 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
2551 for (mg = *mgp; mg; mg = *mgp) {
2552 if (mg->mg_type == type) {
2553 MGVTBL* vtbl = mg->mg_virtual;
2554 *mgp = mg->mg_moremagic;
2555 if (vtbl && vtbl->svt_free)
2556 (*vtbl->svt_free)(sv, mg);
2557 if (mg->mg_ptr && mg->mg_type != 'g')
2558 if (mg->mg_len >= 0)
2559 Safefree(mg->mg_ptr);
2560 else if (mg->mg_len == HEf_SVKEY)
2561 SvREFCNT_dec((SV*)mg->mg_ptr);
2562 if (mg->mg_flags & MGf_REFCOUNTED)
2563 SvREFCNT_dec(mg->mg_obj);
2567 mgp = &mg->mg_moremagic;
2571 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
2578 sv_insert(bigstr,offset,len,little,littlelen)
2587 register char *midend;
2588 register char *bigend;
2592 croak("Can't modify non-existent substring");
2593 SvPV_force(bigstr, na);
2595 i = littlelen - len;
2596 if (i > 0) { /* string might grow */
2597 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
2598 mid = big + offset + len;
2599 midend = bigend = big + SvCUR(bigstr);
2602 while (midend > mid) /* shove everything down */
2603 *--bigend = *--midend;
2604 Move(little,big+offset,littlelen,char);
2610 Move(little,SvPVX(bigstr)+offset,len,char);
2615 big = SvPVX(bigstr);
2618 bigend = big + SvCUR(bigstr);
2620 if (midend > bigend)
2621 croak("panic: sv_insert");
2623 if (mid - big > bigend - midend) { /* faster to shorten from end */
2625 Move(little, mid, littlelen,char);
2628 i = bigend - midend;
2630 Move(midend, mid, i,char);
2634 SvCUR_set(bigstr, mid - big);
2637 else if (i = mid - big) { /* faster from front */
2638 midend -= littlelen;
2640 sv_chop(bigstr,midend-i);
2645 Move(little, mid, littlelen,char);
2647 else if (littlelen) {
2648 midend -= littlelen;
2649 sv_chop(bigstr,midend);
2650 Move(little,midend,littlelen,char);
2653 sv_chop(bigstr,midend);
2658 /* make sv point to what nstr did */
2665 U32 refcnt = SvREFCNT(sv);
2666 sv_check_thinkfirst(sv);
2667 if (SvREFCNT(nsv) != 1)
2668 warn("Reference miscount in sv_replace()");
2669 if (SvMAGICAL(sv)) {
2673 sv_upgrade(nsv, SVt_PVMG);
2674 SvMAGIC(nsv) = SvMAGIC(sv);
2675 SvFLAGS(nsv) |= SvMAGICAL(sv);
2681 assert(!SvREFCNT(sv));
2682 StructCopy(nsv,sv,SV);
2683 SvREFCNT(sv) = refcnt;
2684 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
2693 assert(SvREFCNT(sv) == 0);
2697 if (defstash) { /* Still have a symbol table? */
2703 SAVEFREESV(SvSTASH(sv));
2705 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
2710 sv_upgrade(&ref, SVt_RV);
2711 SvRV(&ref) = SvREFCNT_inc(sv);
2713 SvREFCNT(&ref) = 1; /* Fake, but otherwise
2714 creating+destructing a ref
2715 leads to disaster. */
2721 perl_call_sv((SV*)GvCV(destructor),
2722 G_DISCARD|G_EVAL|G_KEEPERR);
2723 del_XRV(SvANY(&ref));
2730 SvREFCNT_dec(SvSTASH(sv));
2732 SvOBJECT_off(sv); /* Curse the object. */
2733 if (SvTYPE(sv) != SVt_PVIO)
2734 --sv_objcount; /* XXX Might want something more general */
2738 croak("DESTROY created new reference to dead object");
2739 /* DESTROY gave object new lease on life */
2743 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
2745 switch (SvTYPE(sv)) {
2747 if (IoIFP(sv) != PerlIO_stdin() &&
2748 IoIFP(sv) != PerlIO_stdout() &&
2749 IoIFP(sv) != PerlIO_stderr())
2751 Safefree(IoTOP_NAME(sv));
2752 Safefree(IoFMT_NAME(sv));
2753 Safefree(IoBOTTOM_NAME(sv));
2769 Safefree(GvNAME(sv));
2776 (void)SvOOK_off(sv);
2781 SvREFCNT_dec(SvRV(sv));
2782 else if (SvPVX(sv) && SvLEN(sv))
2783 Safefree(SvPVX(sv));
2793 switch (SvTYPE(sv)) {
2809 del_XPVIV(SvANY(sv));
2812 del_XPVNV(SvANY(sv));
2815 del_XPVMG(SvANY(sv));
2818 del_XPVLV(SvANY(sv));
2821 del_XPVAV(SvANY(sv));
2824 del_XPVHV(SvANY(sv));
2827 del_XPVCV(SvANY(sv));
2830 del_XPVGV(SvANY(sv));
2833 del_XPVBM(SvANY(sv));
2836 del_XPVFM(SvANY(sv));
2839 del_XPVIO(SvANY(sv));
2842 SvFLAGS(sv) &= SVf_BREAK;
2843 SvFLAGS(sv) |= SVTYPEMASK;
2861 if (SvREADONLY(sv)) {
2862 if (sv == &sv_undef || sv == &sv_yes || sv == &sv_no)
2865 if (SvREFCNT(sv) == 0) {
2866 if (SvFLAGS(sv) & SVf_BREAK)
2868 if (in_clean_all) /* All is fair */
2870 warn("Attempt to free unreferenced scalar");
2873 if (--SvREFCNT(sv) > 0)
2877 warn("Attempt to free temp prematurely: %s", SvPEEK(sv));
2899 junk = SvPV(sv, len);
2918 pv1 = SvPV(str1, cur1);
2923 pv2 = SvPV(str2, cur2);
2928 return memEQ(pv1, pv2, cur1);
2937 char *pv1 = str1 ? SvPV(str1, cur1) : NULL;
2939 char *pv2 = str2 ? SvPV(str2, cur2) : NULL;
2943 return cur2 ? -1 : 0;
2948 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
2951 return retval < 0 ? -1 : 1;
2956 return cur1 < cur2 ? -1 : 1;
2960 sv_cmp_locale(sv1, sv2)
2964 #ifdef USE_LOCALE_COLLATE
2970 if (collation_standard)
2974 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : NULL;
2976 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : NULL;
2978 if (!pv1 || !len1) {
2989 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
2992 return retval < 0 ? -1 : 1;
2995 * When the result of collation is equality, that doesn't mean
2996 * that there are no differences -- some locales exclude some
2997 * characters from consideration. So to avoid false equalities,
2998 * we use the raw string as a tiebreaker.
3004 #endif /* USE_LOCALE_COLLATE */
3006 return sv_cmp(sv1, sv2);
3009 #ifdef USE_LOCALE_COLLATE
3011 * Any scalar variable may carry an 'o' magic that contains the
3012 * scalar data of the variable transformed to such a format that
3013 * a normal memory comparison can be used to compare the data
3014 * according to the locale settings.
3017 sv_collxfrm(sv, nxp)
3023 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : NULL;
3024 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != collation_ix) {
3029 Safefree(mg->mg_ptr);
3031 if ((xf = mem_collxfrm(s, len, &xlen))) {
3032 if (SvREADONLY(sv)) {
3035 return xf + sizeof(collation_ix);
3038 sv_magic(sv, 0, 'o', 0, 0);
3039 mg = mg_find(sv, 'o');
3052 if (mg && mg->mg_ptr) {
3054 return mg->mg_ptr + sizeof(collation_ix);
3062 #endif /* USE_LOCALE_COLLATE */
3065 sv_gets(sv,fp,append)
3067 register PerlIO *fp;
3073 register STDCHAR rslast;
3074 register STDCHAR *bp;
3078 sv_check_thinkfirst(sv);
3079 if (!SvUPGRADE(sv, SVt_PV))
3087 else if (RsPARA(rs)) {
3092 rsptr = SvPV(rs, rslen);
3093 rslast = rslen ? rsptr[rslen - 1] : '\0';
3095 if (RsPARA(rs)) { /* have to do this both before and after */
3096 do { /* to make sure file boundaries work right */
3099 i = PerlIO_getc(fp);
3103 PerlIO_ungetc(fp,i);
3109 /* See if we know enough about I/O mechanism to cheat it ! */
3111 /* This used to be #ifdef test - it is made run-time test for ease
3112 of abstracting out stdio interface. One call should be cheap
3113 enough here - and may even be a macro allowing compile
3117 if (PerlIO_fast_gets(fp)) {
3120 * We're going to steal some values from the stdio struct
3121 * and put EVERYTHING in the innermost loop into registers.
3123 register STDCHAR *ptr;
3127 #if defined(VMS) && defined(PERLIO_IS_STDIO)
3128 /* An ungetc()d char is handled separately from the regular
3129 * buffer, so we getc() it back out and stuff it in the buffer.
3131 i = PerlIO_getc(fp);
3132 if (i == EOF) return 0;
3133 *(--((*fp)->_ptr)) = (unsigned char) i;
3137 /* Here is some breathtakingly efficient cheating */
3139 cnt = PerlIO_get_cnt(fp); /* get count into register */
3140 (void)SvPOK_only(sv); /* validate pointer */
3141 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
3142 if (cnt > 80 && SvLEN(sv) > append) {
3143 shortbuffered = cnt - SvLEN(sv) + append + 1;
3144 cnt -= shortbuffered;
3148 /* remember that cnt can be negative */
3149 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
3154 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
3155 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
3156 DEBUG_P(PerlIO_printf(Perl_debug_log,
3157 "Screamer: entering, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt));
3158 DEBUG_P(PerlIO_printf(Perl_debug_log,
3159 "Screamer: entering: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n",
3160 (long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp),
3161 (long)(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
3166 while (cnt > 0) { /* this | eat */
3168 if ((*bp++ = *ptr++) == rslast) /* really | dust */
3169 goto thats_all_folks; /* screams | sed :-) */
3173 Copy(ptr, bp, cnt, char); /* this | eat */
3174 bp += cnt; /* screams | dust */
3175 ptr += cnt; /* louder | sed :-) */
3180 if (shortbuffered) { /* oh well, must extend */
3181 cnt = shortbuffered;
3183 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
3185 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
3186 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
3190 DEBUG_P(PerlIO_printf(Perl_debug_log,
3191 "Screamer: going to getc, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt));
3192 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
3193 DEBUG_P(PerlIO_printf(Perl_debug_log,
3194 "Screamer: pre: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n",
3195 (long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp),
3196 (long)(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
3197 /* This used to call 'filbuf' in stdio form, but as that behaves like
3198 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
3199 another abstraction. */
3200 i = PerlIO_getc(fp); /* get more characters */
3201 DEBUG_P(PerlIO_printf(Perl_debug_log,
3202 "Screamer: post: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n",
3203 (long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp),
3204 (long)(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
3205 cnt = PerlIO_get_cnt(fp);
3206 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
3207 DEBUG_P(PerlIO_printf(Perl_debug_log,
3208 "Screamer: after getc, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt));
3210 if (i == EOF) /* all done for ever? */
3211 goto thats_really_all_folks;
3213 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
3215 SvGROW(sv, bpx + cnt + 2);
3216 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
3218 *bp++ = i; /* store character from PerlIO_getc */
3220 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
3221 goto thats_all_folks;
3225 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
3226 memNE((char*)bp - rslen, rsptr, rslen))
3227 goto screamer; /* go back to the fray */
3228 thats_really_all_folks:
3230 cnt += shortbuffered;
3231 DEBUG_P(PerlIO_printf(Perl_debug_log,
3232 "Screamer: quitting, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt));
3233 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
3234 DEBUG_P(PerlIO_printf(Perl_debug_log,
3235 "Screamer: end: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n",
3236 (long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp),
3237 (long)(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
3239 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
3240 DEBUG_P(PerlIO_printf(Perl_debug_log,
3241 "Screamer: done, len=%ld, string=|%.*s|\n",
3242 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
3246 /*The big, slow, and stupid way */
3251 register STDCHAR *bpe = buf + sizeof(buf);
3253 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
3254 ; /* keep reading */
3258 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
3259 /* Accomodate broken VAXC compiler, which applies U8 cast to
3260 * both args of ?: operator, causing EOF to change into 255
3262 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
3266 sv_catpvn(sv, (char *) buf, cnt);
3268 sv_setpvn(sv, (char *) buf, cnt);
3270 if (i != EOF && /* joy */
3272 SvCUR(sv) < rslen ||
3273 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
3277 * If we're reading from a TTY and we get a short read,
3278 * indicating that the user hit his EOF character, we need
3279 * to notice it now, because if we try to read from the TTY
3280 * again, the EOF condition will disappear.
3282 * The comparison of cnt to sizeof(buf) is an optimization
3283 * that prevents unnecessary calls to feof().
3287 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
3292 if (RsPARA(rs)) { /* have to do this both before and after */
3293 while (i != EOF) { /* to make sure file boundaries work right */
3294 i = PerlIO_getc(fp);
3296 PerlIO_ungetc(fp,i);
3302 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
3315 if (SvTHINKFIRST(sv)) {
3316 if (SvREADONLY(sv)) {
3318 if (curcop != &compiling)
3323 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) return;
3324 #endif /* OVERLOAD */
3330 flags = SvFLAGS(sv);
3331 if (flags & SVp_NOK) {
3332 (void)SvNOK_only(sv);
3336 if (flags & SVp_IOK) {
3337 if (SvIVX(sv) == IV_MAX)
3338 sv_setnv(sv, (double)IV_MAX + 1.0);
3340 (void)SvIOK_only(sv);
3345 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
3346 if ((flags & SVTYPEMASK) < SVt_PVNV)
3347 sv_upgrade(sv, SVt_NV);
3349 (void)SvNOK_only(sv);
3353 while (isALPHA(*d)) d++;
3354 while (isDIGIT(*d)) d++;
3356 SET_NUMERIC_STANDARD();
3357 sv_setnv(sv,atof(SvPVX(sv)) + 1.0); /* punt */
3361 while (d >= SvPVX(sv)) {
3371 *(d--) -= 'z' - 'a' + 1;
3374 /* oh,oh, the number grew */
3375 SvGROW(sv, SvCUR(sv) + 2);
3377 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
3393 if (SvTHINKFIRST(sv)) {
3394 if (SvREADONLY(sv)) {
3396 if (curcop != &compiling)
3401 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) return;
3402 #endif /* OVERLOAD */
3408 flags = SvFLAGS(sv);
3409 if (flags & SVp_NOK) {
3411 (void)SvNOK_only(sv);
3414 if (flags & SVp_IOK) {
3415 if (SvIVX(sv) == IV_MIN)
3416 sv_setnv(sv, (double)IV_MIN - 1.0);
3418 (void)SvIOK_only(sv);
3423 if (!(flags & SVp_POK)) {
3424 if ((flags & SVTYPEMASK) < SVt_PVNV)
3425 sv_upgrade(sv, SVt_NV);
3427 (void)SvNOK_only(sv);
3430 SET_NUMERIC_STANDARD();
3431 sv_setnv(sv,atof(SvPVX(sv)) - 1.0); /* punt */
3434 /* Make a string that will exist for the duration of the expression
3435 * evaluation. Actually, it may have to last longer than that, but
3436 * hopefully we won't free it until it has been assigned to a
3437 * permanent location. */
3443 tmps_max += (tmps_max < 512) ? 128 : 512;
3444 Renew(tmps_stack, tmps_max, SV*);
3448 sv_mortalcopy(oldstr)
3458 sv_setsv(sv,oldstr);
3459 if (++tmps_ix >= tmps_max)
3461 tmps_stack[tmps_ix] = sv;
3475 SvFLAGS(sv) = SVs_TEMP;
3476 if (++tmps_ix >= tmps_max)
3478 tmps_stack[tmps_ix] = sv;
3482 /* same thing without the copying */
3491 if (SvREADONLY(sv) && curcop != &compiling)
3493 if (++tmps_ix >= tmps_max)
3495 tmps_stack[tmps_ix] = sv;
3513 sv_setpvn(sv,s,len);
3519 newSVpvf(const char* pat, ...)
3523 newSVpvf(pat, va_alist)
3536 va_start(args, pat);
3540 sv_vsetpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
3585 sv_upgrade(sv, SVt_RV);
3587 SvRV(sv) = SvREFCNT_inc(ref);
3595 Perl_newRV_noinc(ref)
3605 /* make an exact duplicate of old */
3615 if (SvTYPE(old) == SVTYPEMASK) {
3616 warn("semi-panic: attempt to dup freed string");
3646 if (!*s) { /* reset ?? searches */
3647 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
3648 pm->op_pmflags &= ~PMf_USED;
3653 /* reset variables */
3655 if (!HvARRAY(stash))
3658 Zero(todo, 256, char);
3665 for ( ; i <= max; i++) {
3668 for (i = 0; i <= (I32) HvMAX(stash); i++) {
3669 for (entry = HvARRAY(stash)[i];
3671 entry = HeNEXT(entry)) {
3672 if (!todo[(U8)*HeKEY(entry)])
3674 gv = (GV*)HeVAL(entry);
3677 if (SvTYPE(sv) >= SVt_PV) {
3678 dTHR; /* just for taint */
3680 if (SvPVX(sv) != Nullch)
3687 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
3689 #ifndef VMS /* VMS has no environ array */
3691 environ[0] = Nullch;
3706 switch (SvTYPE(sv)) {
3714 croak("Bad filehandle: %s", GvNAME(gv));
3718 croak(no_usym, "filehandle");
3720 return sv_2io(SvRV(sv));
3721 gv = gv_fetchpv(SvPV(sv,na), FALSE, SVt_PVIO);
3727 croak("Bad filehandle: %s", SvPV(sv,na));
3734 sv_2cv(sv, st, gvp, lref)
3744 return *gvp = Nullgv, Nullcv;
3745 switch (SvTYPE(sv)) {
3765 if (SvTYPE(cv) != SVt_PVCV)
3766 croak("Not a subroutine reference");
3774 gv = gv_fetchpv(SvPV(sv, na), lref, SVt_PVCV);
3780 if (lref && !GvCVu(gv)) {
3783 tmpsv = NEWSV(704,0);
3784 gv_efullname3(tmpsv, gv, Nullch);
3785 newSUB(start_subparse(FALSE, 0),
3786 newSVOP(OP_CONST, 0, tmpsv),
3791 croak("Unable to create sub named \"%s\"", SvPV(sv,na));
3808 if ((tXpv = (XPV*)SvANY(sv)) &&
3809 (*tXpv->xpv_pv > '0' ||
3810 tXpv->xpv_cur > 1 ||
3811 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
3818 return SvIVX(sv) != 0;
3821 return SvNVX(sv) != 0.0;
3823 return sv_2bool(sv);
3864 return sv_2pv(sv, lp);
3868 sv_pvn_force(sv, lp)
3874 if (SvREADONLY(sv)) {
3876 if (curcop != &compiling)
3884 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
3885 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) {
3892 croak("Can't coerce %s to string in %s", sv_reftype(sv,0),
3893 op_name[op->op_type]);
3898 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
3903 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
3904 SvGROW(sv, len + 1);
3905 Move(s,SvPVX(sv),len,char);
3910 dTHR; /* just for taint */
3911 SvPOK_on(sv); /* validate pointer */
3913 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2pv(%s)\n",
3914 (unsigned long)sv,SvPVX(sv)));
3925 if (ob && SvOBJECT(sv))
3926 return HvNAME(SvSTASH(sv));
3928 switch (SvTYPE(sv)) {
3942 case SVt_PVLV: return "LVALUE";
3943 case SVt_PVAV: return "ARRAY";
3944 case SVt_PVHV: return "HASH";
3945 case SVt_PVCV: return "CODE";
3946 case SVt_PVGV: return "GLOB";
3947 case SVt_PVFM: return "FORMLINE";
3948 default: return "UNKNOWN";
3984 return strEQ(HvNAME(SvSTASH(sv)), name);
3988 newSVrv(rv, classname)
3999 sv_upgrade(rv, SVt_RV);
4000 SvRV(rv) = SvREFCNT_inc(sv);
4004 HV* stash = gv_stashpv(classname, TRUE);
4005 (void)sv_bless(rv, stash);
4011 sv_setref_pv(rv, classname, pv)
4017 sv_setsv(rv, &sv_undef);
4019 sv_setiv(newSVrv(rv,classname), (IV)pv);
4024 sv_setref_iv(rv, classname, iv)
4029 sv_setiv(newSVrv(rv,classname), iv);
4034 sv_setref_nv(rv, classname, nv)
4039 sv_setnv(newSVrv(rv,classname), nv);
4044 sv_setref_pvn(rv, classname, pv, n)
4050 sv_setpvn(newSVrv(rv,classname), pv, n);
4062 croak("Can't bless non-reference value");
4064 if (SvFLAGS(ref) & (SVs_OBJECT|SVf_READONLY)) {
4065 if (SvREADONLY(ref))
4067 if (SvOBJECT(ref)) {
4068 if (SvTYPE(ref) != SVt_PVIO)
4070 SvREFCNT_dec(SvSTASH(ref));
4074 if (SvTYPE(ref) != SVt_PVIO)
4076 (void)SvUPGRADE(ref, SVt_PVMG);
4077 SvSTASH(ref) = (HV*)SvREFCNT_inc(stash);
4084 #endif /* OVERLOAD */
4093 assert(SvTYPE(sv) == SVt_PVGV);
4097 sv_unmagic(sv, '*');
4098 Safefree(GvNAME(sv));
4100 SvFLAGS(sv) &= ~SVTYPEMASK;
4101 SvFLAGS(sv) |= SVt_PVMG;
4112 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
4115 sv_2mortal(rv); /* Schedule for freeing later */
4122 sv_magic((sv), Nullsv, 't', Nullch, 0);
4129 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
4130 MAGIC *mg = mg_find(sv, 't');
4140 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
4141 MAGIC *mg = mg_find(sv, 't');
4142 if (mg && ((mg->mg_len & 1) || (mg->mg_len & 2) && mg->mg_obj == sv))
4154 char buf[TYPE_DIGITS(UV)];
4155 char *ptr = buf + sizeof(buf);
4160 sv_setpvn(sv, "", 0);
4169 *--ptr = '0' + (uv % 10);
4171 len = (buf + sizeof(buf)) - ptr;
4172 /* taking advantage of SvCUR(sv) == 0 */
4173 SvGROW(sv, sign + len + 1);
4177 memcpy(p, ptr, len);
4180 SvCUR(sv) = p - SvPVX(sv);
4185 sv_setpvf(SV *sv, const char* pat, ...)
4189 sv_setpvf(sv, pat, va_alist)
4197 va_start(args, pat);
4201 sv_vsetpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
4207 sv_catpvf(SV *sv, const char* pat, ...)
4211 sv_catpvf(sv, pat, va_alist)
4219 va_start(args, pat);
4223 sv_vcatpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
4228 sv_vsetpvfn(sv, pat, patlen, args, svargs, svmax, used_locale)
4237 sv_setpvn(sv, "", 0);
4238 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, used_locale);
4242 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, used_locale)
4257 static char nullstr[] = "(null)";
4259 /* no matter what, this is a string now */
4260 (void)SvPV_force(sv, origlen);
4262 /* special-case "", "%s", and "%_" */
4265 if (patlen == 2 && pat[0] == '%') {
4269 char *s = va_arg(*args, char*);
4270 sv_catpv(sv, s ? s : nullstr);
4272 else if (svix < svmax)
4273 sv_catsv(sv, *svargs);
4277 sv_catsv(sv, va_arg(*args, SV*));
4280 /* See comment on '_' below */
4285 patend = (char*)pat + patlen;
4286 for (p = (char*)pat; p < patend; p = q) {
4294 bool has_precis = FALSE;
4298 STRLEN esignlen = 0;
4300 char *eptr = Nullch;
4302 char ebuf[TYPE_DIGITS(int) * 2 + 16]; /* large enough for "%#.#f" */
4304 static char *efloatbuf = Nullch;
4305 static STRLEN efloatsize = 0;
4317 for (q = p; q < patend && *q != '%'; ++q) ;
4319 sv_catpvn(sv, p, q - p);
4357 case '1': case '2': case '3':
4358 case '4': case '5': case '6':
4359 case '7': case '8': case '9':
4362 width = width * 10 + (*q++ - '0');
4367 i = va_arg(*args, int);
4369 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
4371 width = (i < 0) ? -i : i;
4382 i = va_arg(*args, int);
4384 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
4385 precis = (i < 0) ? 0 : i;
4391 precis = precis * 10 + (*q++ - '0');
4400 #if 0 /* when quads have better support within Perl */
4401 if (*(q + 1) == 'l') {
4427 c = va_arg(*args, int);
4429 c = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
4436 eptr = va_arg(*args, char*);
4438 elen = strlen(eptr);
4441 elen = sizeof nullstr - 1;
4444 else if (svix < svmax)
4445 eptr = SvPVx(svargs[svix++], elen);
4450 * The "%_" hack might have to be changed someday,
4451 * if ISO or ANSI decide to use '_' for something.
4452 * So we keep it hidden from users' code.
4456 eptr = SvPVx(va_arg(*args, SV*), elen);
4459 if (has_precis && elen > precis)
4467 uv = (UV)va_arg(*args, void*);
4469 uv = (svix < svmax) ? (UV)svargs[svix++] : 0;
4480 case 'h': iv = (short)va_arg(*args, int); break;
4481 default: iv = va_arg(*args, int); break;
4482 case 'l': iv = va_arg(*args, long); break;
4483 case 'V': iv = va_arg(*args, IV); break;
4487 iv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
4489 case 'h': iv = (short)iv; break;
4490 default: iv = (int)iv; break;
4491 case 'l': iv = (long)iv; break;
4498 esignbuf[esignlen++] = plus;
4502 esignbuf[esignlen++] = '-';
4528 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
4529 default: uv = va_arg(*args, unsigned); break;
4530 case 'l': uv = va_arg(*args, unsigned long); break;
4531 case 'V': uv = va_arg(*args, UV); break;
4535 uv = (svix < svmax) ? SvUVx(svargs[svix++]) : 0;
4537 case 'h': uv = (unsigned short)uv; break;
4538 default: uv = (unsigned)uv; break;
4539 case 'l': uv = (unsigned long)uv; break;
4545 eptr = ebuf + sizeof ebuf;
4549 p = (c == 'X') ? "0123456789ABCDEF" : "0123456789abcdef";
4555 esignbuf[esignlen++] = '0';
4556 esignbuf[esignlen++] = c; /* 'x' or 'X' */
4562 *--eptr = '0' + dig;
4564 if (alt && *eptr != '0')
4567 default: /* it had better be ten or less */
4570 *--eptr = '0' + dig;
4571 } while (uv /= base);
4574 elen = (ebuf + sizeof ebuf) - eptr;
4575 if (has_precis && precis > elen)
4576 zeros = precis - elen;
4579 /* FLOATING POINT */
4582 c = 'f'; /* maybe %F isn't supported here */
4588 /* This is evil, but floating point is even more evil */
4591 nv = va_arg(*args, double);
4593 nv = (svix < svmax) ? SvNVx(svargs[svix++]) : 0.0;
4596 if (c != 'e' && c != 'E') {
4598 (void)frexp(nv, &i);
4599 if (i == PERL_INT_MIN)
4600 die("panic: frexp");
4602 need = BIT_DIGITS(i);
4604 need += has_precis ? precis : 6; /* known default */
4608 need += 20; /* fudge factor */
4609 if (efloatsize < need) {
4610 Safefree(efloatbuf);
4611 efloatsize = need + 20; /* more fudge */
4612 New(906, efloatbuf, efloatsize, char);
4615 eptr = ebuf + sizeof ebuf;
4620 do { *--eptr = '0' + (base % 10); } while (base /= 10);
4625 do { *--eptr = '0' + (base % 10); } while (base /= 10);
4637 (void)sprintf(efloatbuf, eptr, nv);
4640 elen = strlen(efloatbuf);
4644 * User-defined locales may include arbitrary characters.
4645 * And, unfortunately, some system may alloc the "C" locale
4646 * to be overridden by a malicious user.
4649 *used_locale = TRUE;
4650 #endif /* LC_NUMERIC */
4657 i = SvCUR(sv) - origlen;
4660 case 'h': *(va_arg(*args, short*)) = i; break;
4661 default: *(va_arg(*args, int*)) = i; break;
4662 case 'l': *(va_arg(*args, long*)) = i; break;
4663 case 'V': *(va_arg(*args, IV*)) = i; break;
4666 else if (svix < svmax)
4667 sv_setuv(svargs[svix++], (UV)i);
4668 continue; /* not "break" */
4674 if (!args && dowarn &&
4675 (op->op_type == OP_PRTF || op->op_type == OP_SPRINTF)) {
4676 SV *msg = sv_newmortal();
4677 sv_setpvf(msg, "Invalid conversion in %s: ",
4678 (op->op_type == OP_PRTF) ? "printf" : "sprintf");
4680 sv_catpvf(msg, isPRINT(c) ? "\"%%%c\"" : "\"%%\\%03o\"",
4683 sv_catpv(msg, "end of string");
4684 warn("%_", msg); /* yes, this is reentrant */
4687 /* output mangled stuff ... */
4693 /* ... right here, because formatting flags should not apply */
4694 SvGROW(sv, SvCUR(sv) + elen + 1);
4696 memcpy(p, eptr, elen);
4699 SvCUR(sv) = p - SvPVX(sv);
4700 continue; /* not "break" */
4703 have = esignlen + zeros + elen;
4704 need = (have > width ? have : width);
4707 SvGROW(sv, SvCUR(sv) + need + 1);
4709 if (esignlen && fill == '0') {
4710 for (i = 0; i < esignlen; i++)
4714 memset(p, fill, gap);
4717 if (esignlen && fill != '0') {
4718 for (i = 0; i < esignlen; i++)
4722 for (i = zeros; i; i--)
4726 memcpy(p, eptr, elen);
4730 memset(p, ' ', gap);
4734 SvCUR(sv) = p - SvPVX(sv);
4743 SV *d = sv_newmortal();
4749 PerlIO_printf(Perl_debug_log, "SV = 0\n");
4753 flags = SvFLAGS(sv);
4756 sv_setpvf(d, "(0x%lx)\n REFCNT = %ld\n FLAGS = (",
4757 (unsigned long)SvANY(sv), (long)SvREFCNT(sv));
4758 if (flags & SVs_PADBUSY) sv_catpv(d, "PADBUSY,");
4759 if (flags & SVs_PADTMP) sv_catpv(d, "PADTMP,");
4760 if (flags & SVs_PADMY) sv_catpv(d, "PADMY,");
4761 if (flags & SVs_TEMP) sv_catpv(d, "TEMP,");
4762 if (flags & SVs_OBJECT) sv_catpv(d, "OBJECT,");
4763 if (flags & SVs_GMG) sv_catpv(d, "GMG,");
4764 if (flags & SVs_SMG) sv_catpv(d, "SMG,");
4765 if (flags & SVs_RMG) sv_catpv(d, "RMG,");
4767 if (flags & SVf_IOK) sv_catpv(d, "IOK,");
4768 if (flags & SVf_NOK) sv_catpv(d, "NOK,");
4769 if (flags & SVf_POK) sv_catpv(d, "POK,");
4770 if (flags & SVf_ROK) sv_catpv(d, "ROK,");
4771 if (flags & SVf_OOK) sv_catpv(d, "OOK,");
4772 if (flags & SVf_FAKE) sv_catpv(d, "FAKE,");
4773 if (flags & SVf_READONLY) sv_catpv(d, "READONLY,");
4776 if (flags & SVf_AMAGIC) sv_catpv(d, "OVERLOAD,");
4777 #endif /* OVERLOAD */
4778 if (flags & SVp_IOK) sv_catpv(d, "pIOK,");
4779 if (flags & SVp_NOK) sv_catpv(d, "pNOK,");
4780 if (flags & SVp_POK) sv_catpv(d, "pPOK,");
4781 if (flags & SVp_SCREAM) sv_catpv(d, "SCREAM,");
4786 if (CvANON(sv)) sv_catpv(d, "ANON,");
4787 if (CvUNIQUE(sv)) sv_catpv(d, "UNIQUE,");
4788 if (CvCLONE(sv)) sv_catpv(d, "CLONE,");
4789 if (CvCLONED(sv)) sv_catpv(d, "CLONED,");
4790 if (CvNODEBUG(sv)) sv_catpv(d, "NODEBUG,");
4793 if (HvSHAREKEYS(sv)) sv_catpv(d, "SHAREKEYS,");
4794 if (HvLAZYDEL(sv)) sv_catpv(d, "LAZYDEL,");
4797 if (GvINTRO(sv)) sv_catpv(d, "INTRO,");
4798 if (GvMULTI(sv)) sv_catpv(d, "MULTI,");
4799 if (GvASSUMECV(sv)) sv_catpv(d, "ASSUMECV,");
4800 if (GvIMPORTED(sv)) {
4801 sv_catpv(d, "IMPORT");
4802 if (GvIMPORTED(sv) == GVf_IMPORTED)
4803 sv_catpv(d, "ALL,");
4806 if (GvIMPORTED_SV(sv)) sv_catpv(d, " SV");
4807 if (GvIMPORTED_AV(sv)) sv_catpv(d, " AV");
4808 if (GvIMPORTED_HV(sv)) sv_catpv(d, " HV");
4809 if (GvIMPORTED_CV(sv)) sv_catpv(d, " CV");
4815 if (*(SvEND(d) - 1) == ',')
4816 SvPVX(d)[--SvCUR(d)] = '\0';
4820 PerlIO_printf(Perl_debug_log, "SV = ");
4823 PerlIO_printf(Perl_debug_log, "NULL%s\n", s);
4826 PerlIO_printf(Perl_debug_log, "IV%s\n", s);
4829 PerlIO_printf(Perl_debug_log, "NV%s\n", s);
4832 PerlIO_printf(Perl_debug_log, "RV%s\n", s);
4835 PerlIO_printf(Perl_debug_log, "PV%s\n", s);
4838 PerlIO_printf(Perl_debug_log, "PVIV%s\n", s);
4841 PerlIO_printf(Perl_debug_log, "PVNV%s\n", s);
4844 PerlIO_printf(Perl_debug_log, "PVBM%s\n", s);
4847 PerlIO_printf(Perl_debug_log, "PVMG%s\n", s);
4850 PerlIO_printf(Perl_debug_log, "PVLV%s\n", s);
4853 PerlIO_printf(Perl_debug_log, "PVAV%s\n", s);
4856 PerlIO_printf(Perl_debug_log, "PVHV%s\n", s);
4859 PerlIO_printf(Perl_debug_log, "PVCV%s\n", s);
4862 PerlIO_printf(Perl_debug_log, "PVGV%s\n", s);
4865 PerlIO_printf(Perl_debug_log, "PVFM%s\n", s);
4868 PerlIO_printf(Perl_debug_log, "PVIO%s\n", s);
4871 PerlIO_printf(Perl_debug_log, "UNKNOWN%s\n", s);
4874 if (type >= SVt_PVIV || type == SVt_IV)
4875 PerlIO_printf(Perl_debug_log, " IV = %ld\n", (long)SvIVX(sv));
4876 if (type >= SVt_PVNV || type == SVt_NV) {
4877 SET_NUMERIC_STANDARD();
4878 PerlIO_printf(Perl_debug_log, " NV = %.*g\n", DBL_DIG, SvNVX(sv));
4881 PerlIO_printf(Perl_debug_log, " RV = 0x%lx\n", (long)SvRV(sv));
4887 if (type <= SVt_PVLV) {
4889 PerlIO_printf(Perl_debug_log, " PV = 0x%lx \"%s\"\n CUR = %ld\n LEN = %ld\n",
4890 (long)SvPVX(sv), SvPVX(sv), (long)SvCUR(sv), (long)SvLEN(sv));
4892 PerlIO_printf(Perl_debug_log, " PV = 0\n");
4894 if (type >= SVt_PVMG) {
4896 PerlIO_printf(Perl_debug_log, " MAGIC = 0x%lx\n", (long)SvMAGIC(sv));
4899 PerlIO_printf(Perl_debug_log, " STASH = \"%s\"\n", HvNAME(SvSTASH(sv)));
4903 PerlIO_printf(Perl_debug_log, " TYPE = %c\n", LvTYPE(sv));
4904 PerlIO_printf(Perl_debug_log, " TARGOFF = %ld\n", (long)LvTARGOFF(sv));
4905 PerlIO_printf(Perl_debug_log, " TARGLEN = %ld\n", (long)LvTARGLEN(sv));
4906 PerlIO_printf(Perl_debug_log, " TARG = 0x%lx\n", (long)LvTARG(sv));
4907 sv_dump(LvTARG(sv));
4910 PerlIO_printf(Perl_debug_log, " ARRAY = 0x%lx\n", (long)AvARRAY(sv));
4911 PerlIO_printf(Perl_debug_log, " ALLOC = 0x%lx\n", (long)AvALLOC(sv));
4912 PerlIO_printf(Perl_debug_log, " FILL = %ld\n", (long)AvFILL(sv));
4913 PerlIO_printf(Perl_debug_log, " MAX = %ld\n", (long)AvMAX(sv));
4914 PerlIO_printf(Perl_debug_log, " ARYLEN = 0x%lx\n", (long)AvARYLEN(sv));
4915 flags = AvFLAGS(sv);
4917 if (flags & AVf_REAL) sv_catpv(d, ",REAL");
4918 if (flags & AVf_REIFY) sv_catpv(d, ",REIFY");
4919 if (flags & AVf_REUSED) sv_catpv(d, ",REUSED");
4920 PerlIO_printf(Perl_debug_log, " FLAGS = (%s)\n",
4921 SvCUR(d) ? SvPVX(d) + 1 : "");
4924 PerlIO_printf(Perl_debug_log, " ARRAY = 0x%lx\n",(long)HvARRAY(sv));
4925 PerlIO_printf(Perl_debug_log, " KEYS = %ld\n", (long)HvKEYS(sv));
4926 PerlIO_printf(Perl_debug_log, " FILL = %ld\n", (long)HvFILL(sv));
4927 PerlIO_printf(Perl_debug_log, " MAX = %ld\n", (long)HvMAX(sv));
4928 PerlIO_printf(Perl_debug_log, " RITER = %ld\n", (long)HvRITER(sv));
4929 PerlIO_printf(Perl_debug_log, " EITER = 0x%lx\n",(long) HvEITER(sv));
4931 PerlIO_printf(Perl_debug_log, " PMROOT = 0x%lx\n",(long)HvPMROOT(sv));
4933 PerlIO_printf(Perl_debug_log, " NAME = \"%s\"\n", HvNAME(sv));
4937 PerlIO_printf(Perl_debug_log, " PROTOTYPE = \"%s\"\n", SvPV(sv,na));
4940 PerlIO_printf(Perl_debug_log, " STASH = 0x%lx\n", (long)CvSTASH(sv));
4941 PerlIO_printf(Perl_debug_log, " START = 0x%lx\n", (long)CvSTART(sv));
4942 PerlIO_printf(Perl_debug_log, " ROOT = 0x%lx\n", (long)CvROOT(sv));
4943 PerlIO_printf(Perl_debug_log, " XSUB = 0x%lx\n", (long)CvXSUB(sv));
4944 PerlIO_printf(Perl_debug_log, " XSUBANY = %ld\n", (long)CvXSUBANY(sv).any_i32);
4945 PerlIO_printf(Perl_debug_log, " GV = 0x%lx", (long)CvGV(sv));
4946 if (CvGV(sv) && GvNAME(CvGV(sv))) {
4947 PerlIO_printf(Perl_debug_log, " \"%s\"\n", GvNAME(CvGV(sv)));
4949 PerlIO_printf(Perl_debug_log, "\n");
4951 PerlIO_printf(Perl_debug_log, " FILEGV = 0x%lx\n", (long)CvFILEGV(sv));
4952 PerlIO_printf(Perl_debug_log, " DEPTH = %ld\n", (long)CvDEPTH(sv));
4953 PerlIO_printf(Perl_debug_log, " PADLIST = 0x%lx\n", (long)CvPADLIST(sv));
4954 PerlIO_printf(Perl_debug_log, " OUTSIDE = 0x%lx\n", (long)CvOUTSIDE(sv));
4956 PerlIO_printf(Perl_debug_log, " MUTEXP = 0x%lx\n", (long)CvMUTEXP(sv));
4957 PerlIO_printf(Perl_debug_log, " OWNER = 0x%lx\n", (long)CvOWNER(sv));
4958 #endif /* USE_THREADS */
4959 PerlIO_printf(Perl_debug_log, " FLAGS = 0x%lx\n",
4960 (unsigned long)CvFLAGS(sv));
4961 if (type == SVt_PVFM)
4962 PerlIO_printf(Perl_debug_log, " LINES = %ld\n", (long)FmLINES(sv));
4965 PerlIO_printf(Perl_debug_log, " NAME = \"%s\"\n", GvNAME(sv));
4966 PerlIO_printf(Perl_debug_log, " NAMELEN = %ld\n", (long)GvNAMELEN(sv));
4967 PerlIO_printf(Perl_debug_log, " STASH = \"%s\"\n", HvNAME(GvSTASH(sv)));
4968 PerlIO_printf(Perl_debug_log, " GP = 0x%lx\n", (long)GvGP(sv));
4969 PerlIO_printf(Perl_debug_log, " SV = 0x%lx\n", (long)GvSV(sv));
4970 PerlIO_printf(Perl_debug_log, " REFCNT = %ld\n", (long)GvREFCNT(sv));
4971 PerlIO_printf(Perl_debug_log, " IO = 0x%lx\n", (long)GvIOp(sv));
4972 PerlIO_printf(Perl_debug_log, " FORM = 0x%lx\n", (long)GvFORM(sv));
4973 PerlIO_printf(Perl_debug_log, " AV = 0x%lx\n", (long)GvAV(sv));
4974 PerlIO_printf(Perl_debug_log, " HV = 0x%lx\n", (long)GvHV(sv));
4975 PerlIO_printf(Perl_debug_log, " CV = 0x%lx\n", (long)GvCV(sv));
4976 PerlIO_printf(Perl_debug_log, " CVGEN = 0x%lx\n", (long)GvCVGEN(sv));
4977 PerlIO_printf(Perl_debug_log, " LASTEXPR = %ld\n", (long)GvLASTEXPR(sv));
4978 PerlIO_printf(Perl_debug_log, " LINE = %ld\n", (long)GvLINE(sv));
4979 PerlIO_printf(Perl_debug_log, " FILEGV = 0x%lx\n", (long)GvFILEGV(sv));
4980 PerlIO_printf(Perl_debug_log, " EGV = 0x%lx\n", (long)GvEGV(sv));
4983 PerlIO_printf(Perl_debug_log, " IFP = 0x%lx\n", (long)IoIFP(sv));
4984 PerlIO_printf(Perl_debug_log, " OFP = 0x%lx\n", (long)IoOFP(sv));
4985 PerlIO_printf(Perl_debug_log, " DIRP = 0x%lx\n", (long)IoDIRP(sv));
4986 PerlIO_printf(Perl_debug_log, " LINES = %ld\n", (long)IoLINES(sv));
4987 PerlIO_printf(Perl_debug_log, " PAGE = %ld\n", (long)IoPAGE(sv));
4988 PerlIO_printf(Perl_debug_log, " PAGE_LEN = %ld\n", (long)IoPAGE_LEN(sv));
4989 PerlIO_printf(Perl_debug_log, " LINES_LEFT = %ld\n", (long)IoLINES_LEFT(sv));
4990 PerlIO_printf(Perl_debug_log, " TOP_NAME = \"%s\"\n", IoTOP_NAME(sv));
4991 PerlIO_printf(Perl_debug_log, " TOP_GV = 0x%lx\n", (long)IoTOP_GV(sv));
4992 PerlIO_printf(Perl_debug_log, " FMT_NAME = \"%s\"\n", IoFMT_NAME(sv));
4993 PerlIO_printf(Perl_debug_log, " FMT_GV = 0x%lx\n", (long)IoFMT_GV(sv));
4994 PerlIO_printf(Perl_debug_log, " BOTTOM_NAME = \"%s\"\n", IoBOTTOM_NAME(sv));
4995 PerlIO_printf(Perl_debug_log, " BOTTOM_GV = 0x%lx\n", (long)IoBOTTOM_GV(sv));
4996 PerlIO_printf(Perl_debug_log, " SUBPROCESS = %ld\n", (long)IoSUBPROCESS(sv));
4997 PerlIO_printf(Perl_debug_log, " TYPE = %c\n", IoTYPE(sv));
4998 PerlIO_printf(Perl_debug_log, " FLAGS = 0x%lx\n", (long)IoFLAGS(sv));