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*));
69 (p) = (SV*)safemalloc(sizeof(SV)); \
78 Safefree((char*)(p)); \
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 Newz(707, registry, regsize, SV*);
119 for (i = 0; i < oldsize; ++i) {
120 SV* oldsv = oldreg[i];
146 for (i = 0; i < regsize; ++i) {
147 SV* sv = registry[i];
154 sv_add_arena(ptr, size, flags)
159 if (!(flags & SVf_FAKE))
166 * "A time to plant, and a time to uproot what was planted..."
169 #define plant_SV(p) \
171 SvANY(p) = (void *)sv_root; \
172 SvFLAGS(p) = SVTYPEMASK; \
177 /* sv_mutex must be held while calling uproot_SV() */
178 #define uproot_SV(p) \
181 sv_root = (SV*)SvANY(p); \
185 #define new_SV(p) do { \
196 #define del_SV(p) do { \
213 for (sva = sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
215 svend = &sva[SvREFCNT(sva)];
216 if (p >= sv && p < svend)
220 warn("Attempt to free non-arena SV: 0x%lx", (unsigned long)p);
227 #else /* ! DEBUGGING */
229 #define del_SV(p) plant_SV(p)
231 #endif /* DEBUGGING */
234 sv_add_arena(char *ptr, U32 size, U32 flags)
239 Zero(sva, size, char);
241 /* The first SV in an arena isn't an SV. */
242 SvANY(sva) = (void *) sv_arenaroot; /* ptr to next arena */
243 SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */
244 SvFLAGS(sva) = flags; /* FAKE if not to be freed */
249 svend = &sva[SvREFCNT(sva) - 1];
252 SvANY(sv) = (void *)(SV*)(sv + 1);
253 SvFLAGS(sv) = SVTYPEMASK;
257 SvFLAGS(sv) = SVTYPEMASK;
260 /* sv_mutex must be held while calling more_sv() */
267 sv_add_arena(nice_chunk, nice_chunk_size, 0);
271 char *chunk; /* must use New here to match call to */
272 New(704,chunk,1008,char); /* Safefree() in sv_free_arenas() */
273 sv_add_arena(chunk, 1008, 0);
286 for (sva = sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
287 svend = &sva[SvREFCNT(sva)];
288 for (sv = sva + 1; sv < svend; ++sv) {
289 if (SvTYPE(sv) != SVTYPEMASK)
298 do_report_used(SV *sv)
300 if (SvTYPE(sv) != SVTYPEMASK) {
301 /* XXX Perhaps this ought to go to Perl_debug_log, if DEBUGGING. */
302 PerlIO_printf(PerlIO_stderr(), "****\n");
310 visit(do_report_used);
314 do_clean_objs(SV *sv)
318 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
319 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
325 /* XXX Might want to check arrays, etc. */
328 #ifndef DISABLE_DESTRUCTOR_KLUDGE
330 do_clean_named_objs(SV *sv)
332 if (SvTYPE(sv) == SVt_PVGV && GvSV(sv))
333 do_clean_objs(GvSV(sv));
337 static bool in_clean_objs = FALSE;
342 in_clean_objs = TRUE;
343 #ifndef DISABLE_DESTRUCTOR_KLUDGE
344 visit(do_clean_named_objs);
346 visit(do_clean_objs);
347 in_clean_objs = FALSE;
353 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops:\n "), sv_dump(sv));)
354 SvFLAGS(sv) |= SVf_BREAK;
358 static bool in_clean_all = FALSE;
365 in_clean_all = FALSE;
374 /* Free arenas here, but be careful about fake ones. (We assume
375 contiguity of the fake ones with the corresponding real ones.) */
377 for (sva = sv_arenaroot; sva; sva = svanext) {
378 svanext = (SV*) SvANY(sva);
379 while (svanext && SvFAKE(svanext))
380 svanext = (SV*) SvANY(svanext);
383 Safefree((void *)sva);
397 * See comment in more_xiv() -- RAM.
399 xiv_root = (IV**)*xiv;
400 return (XPVIV*)((char*)xiv - sizeof(XPV));
408 IV** xiv = (IV**)((char*)(p) + sizeof(XPV));
409 *xiv = (IV *)xiv_root;
417 register IV** xivend;
419 New(705, ptr, 1008/sizeof(XPV), XPV);
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 New(711, xnv, 1008/sizeof(double), double);
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 New(712, xrv_root, 1008/sizeof(XRV), XRV);
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 New(713, xpv_root, 1008/sizeof(XPV), XPV);
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) Safefree((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) Safefree((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) Safefree((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) Safefree((char*)p)
570 #define new_XPV() (void*)new_xpv()
571 #define del_XPV(p) del_xpv((XPV *)p)
575 # define my_safemalloc(s) safemalloc(s)
576 # define my_safefree(s) free(s)
583 New(717, p, size, char);
586 # define my_safefree(s) Safefree(s)
589 #define new_XPVIV() (void*)my_safemalloc(sizeof(XPVIV))
590 #define del_XPVIV(p) my_safefree((char*)p)
592 #define new_XPVNV() (void*)my_safemalloc(sizeof(XPVNV))
593 #define del_XPVNV(p) my_safefree((char*)p)
595 #define new_XPVMG() (void*)my_safemalloc(sizeof(XPVMG))
596 #define del_XPVMG(p) my_safefree((char*)p)
598 #define new_XPVLV() (void*)my_safemalloc(sizeof(XPVLV))
599 #define del_XPVLV(p) my_safefree((char*)p)
601 #define new_XPVAV() (void*)my_safemalloc(sizeof(XPVAV))
602 #define del_XPVAV(p) my_safefree((char*)p)
604 #define new_XPVHV() (void*)my_safemalloc(sizeof(XPVHV))
605 #define del_XPVHV(p) my_safefree((char*)p)
607 #define new_XPVCV() (void*)my_safemalloc(sizeof(XPVCV))
608 #define del_XPVCV(p) my_safefree((char*)p)
610 #define new_XPVGV() (void*)my_safemalloc(sizeof(XPVGV))
611 #define del_XPVGV(p) my_safefree((char*)p)
613 #define new_XPVBM() (void*)my_safemalloc(sizeof(XPVBM))
614 #define del_XPVBM(p) my_safefree((char*)p)
616 #define new_XPVFM() (void*)my_safemalloc(sizeof(XPVFM))
617 #define del_XPVFM(p) my_safefree((char*)p)
619 #define new_XPVIO() (void*)my_safemalloc(sizeof(XPVIO))
620 #define del_XPVIO(p) my_safefree((char*)p)
623 sv_upgrade(register SV *sv, U32 mt)
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;
900 SV *t = sv_newmortal();
910 else if (sv == (SV*)0x55555555 || SvTYPE(sv) == 'U') {
914 else if (sv == &sv_undef || sv == &sv_no || sv == &sv_yes) {
915 if (sv == &sv_undef) {
916 sv_catpv(t, "SV_UNDEF");
917 if (!(SvFLAGS(sv) & (SVf_OK|SVf_OOK|SVs_OBJECT|
918 SVs_GMG|SVs_SMG|SVs_RMG)) &&
922 else if (sv == &sv_no) {
923 sv_catpv(t, "SV_NO");
924 if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
925 SVs_GMG|SVs_SMG|SVs_RMG)) &&
926 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
933 sv_catpv(t, "SV_YES");
934 if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
935 SVs_GMG|SVs_SMG|SVs_RMG)) &&
936 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
939 SvPVX(sv) && *SvPVX(sv) == '1' &&
945 else if (SvREFCNT(sv) == 0) {
951 if (SvCUR(t) + unref > 10) {
952 SvCUR(t) = unref + 3;
960 switch (SvTYPE(sv)) {
962 sv_catpv(t, "FREED");
966 sv_catpv(t, "UNDEF");
1000 sv_catpvf(t, "CV(%s)", GvNAME(CvGV(sv)));
1002 sv_catpv(t, "CV()");
1020 sv_catpv(t, "(null)");
1022 sv_catpvf(t, "(%ld+\"%.127s\")",(long)SvIVX(sv),SvPVX(sv));
1024 sv_catpvf(t, "(\"%.127s\")",SvPVX(sv));
1026 else if (SvNOKp(sv)) {
1027 SET_NUMERIC_STANDARD();
1028 sv_catpvf(t, "(%g)",SvNVX(sv));
1030 else if (SvIOKp(sv))
1031 sv_catpvf(t, "(%ld)",(long)SvIVX(sv));
1045 sv_backoff(register SV *sv)
1049 char *s = SvPVX(sv);
1050 SvLEN(sv) += SvIVX(sv);
1051 SvPVX(sv) -= SvIVX(sv);
1053 Move(s, SvPVX(sv), SvCUR(sv)+1, char);
1055 SvFLAGS(sv) &= ~SVf_OOK;
1061 sv_grow(register SV *sv, register I32 newlen)
1063 sv_grow(SV* sv, unsigned long newlen)
1068 #ifdef HAS_64K_LIMIT
1069 if (newlen >= 0x10000) {
1070 PerlIO_printf(Perl_debug_log, "Allocation too large: %lx\n", newlen);
1073 #endif /* HAS_64K_LIMIT */
1076 if (SvTYPE(sv) < SVt_PV) {
1077 sv_upgrade(sv, SVt_PV);
1080 else if (SvOOK(sv)) { /* pv is offset? */
1083 if (newlen > SvLEN(sv))
1084 newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */
1088 if (newlen > SvLEN(sv)) { /* need more room? */
1090 Renew(s,newlen,char);
1092 New(703,s,newlen,char);
1094 SvLEN_set(sv, newlen);
1100 sv_setiv(register SV *sv, IV i)
1102 sv_check_thinkfirst(sv);
1103 switch (SvTYPE(sv)) {
1105 sv_upgrade(sv, SVt_IV);
1108 sv_upgrade(sv, SVt_PVNV);
1112 sv_upgrade(sv, SVt_PVIV);
1128 croak("Can't coerce %s to integer in %s", sv_reftype(sv,0),
1129 op_desc[op->op_type]);
1132 (void)SvIOK_only(sv); /* validate number */
1138 sv_setuv(register SV *sv, UV u)
1143 sv_setnv(sv, (double)u);
1147 sv_setnv(register SV *sv, double num)
1149 sv_check_thinkfirst(sv);
1150 switch (SvTYPE(sv)) {
1153 sv_upgrade(sv, SVt_NV);
1159 sv_upgrade(sv, SVt_PVNV);
1166 (void)SvOOK_off(sv);
1181 croak("Can't coerce %s to number in %s", sv_reftype(sv,0),
1182 op_name[op->op_type]);
1186 (void)SvNOK_only(sv); /* validate number */
1191 not_a_number(SV *sv)
1197 char *limit = tmpbuf + sizeof(tmpbuf) - 8;
1198 /* each *s can expand to 4 chars + "...\0",
1199 i.e. need room for 8 chars */
1201 for (s = SvPVX(sv); *s && d < limit; s++) {
1203 if (ch & 128 && !isPRINT_LC(ch)) {
1212 else if (ch == '\r') {
1216 else if (ch == '\f') {
1220 else if (ch == '\\') {
1224 else if (isPRINT_LC(ch))
1239 warn("Argument \"%s\" isn't numeric in %s", tmpbuf,
1240 op_name[op->op_type]);
1242 warn("Argument \"%s\" isn't numeric", tmpbuf);
1246 sv_2iv(register SV *sv)
1250 if (SvGMAGICAL(sv)) {
1255 if (SvNVX(sv) < 0.0)
1256 return I_V(SvNVX(sv));
1258 return (IV) U_V(SvNVX(sv));
1260 if (SvPOKp(sv) && SvLEN(sv))
1263 if (dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) {
1271 if (SvTHINKFIRST(sv)) {
1275 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
1276 return SvIV(tmpstr);
1277 #endif /* OVERLOAD */
1278 return (IV)SvRV(sv);
1280 if (SvREADONLY(sv)) {
1282 if (SvNVX(sv) < 0.0)
1283 return I_V(SvNVX(sv));
1285 return (IV) U_V(SvNVX(sv));
1287 if (SvPOKp(sv) && SvLEN(sv))
1294 switch (SvTYPE(sv)) {
1296 sv_upgrade(sv, SVt_IV);
1299 sv_upgrade(sv, SVt_PVIV);
1302 sv_upgrade(sv, SVt_PVNV);
1307 if (SvNVX(sv) < 0.0)
1308 SvIVX(sv) = I_V(SvNVX(sv));
1310 SvUVX(sv) = U_V(SvNVX(sv));
1312 else if (SvPOKp(sv) && SvLEN(sv)) {
1314 SvIVX(sv) = asIV(sv);
1318 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1322 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2iv(%ld)\n",
1323 (unsigned long)sv,(long)SvIVX(sv)));
1328 sv_2uv(register SV *sv)
1332 if (SvGMAGICAL(sv)) {
1337 return U_V(SvNVX(sv));
1338 if (SvPOKp(sv) && SvLEN(sv))
1341 if (dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) {
1349 if (SvTHINKFIRST(sv)) {
1353 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
1354 return SvUV(tmpstr);
1355 #endif /* OVERLOAD */
1356 return (UV)SvRV(sv);
1358 if (SvREADONLY(sv)) {
1360 return U_V(SvNVX(sv));
1362 if (SvPOKp(sv) && SvLEN(sv))
1369 switch (SvTYPE(sv)) {
1371 sv_upgrade(sv, SVt_IV);
1374 sv_upgrade(sv, SVt_PVIV);
1377 sv_upgrade(sv, SVt_PVNV);
1382 SvUVX(sv) = U_V(SvNVX(sv));
1384 else if (SvPOKp(sv) && SvLEN(sv)) {
1386 SvUVX(sv) = asUV(sv);
1389 if (dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) {
1396 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2uv(%lu)\n",
1397 (unsigned long)sv,SvUVX(sv)));
1402 sv_2nv(register SV *sv)
1406 if (SvGMAGICAL(sv)) {
1410 if (SvPOKp(sv) && SvLEN(sv)) {
1411 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1413 SET_NUMERIC_STANDARD();
1414 return atof(SvPVX(sv));
1417 return (double)SvIVX(sv);
1419 if (dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) {
1427 if (SvTHINKFIRST(sv)) {
1431 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)))
1432 return SvNV(tmpstr);
1433 #endif /* OVERLOAD */
1434 return (double)(unsigned long)SvRV(sv);
1436 if (SvREADONLY(sv)) {
1437 if (SvPOKp(sv) && SvLEN(sv)) {
1438 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1440 SET_NUMERIC_STANDARD();
1441 return atof(SvPVX(sv));
1444 return (double)SvIVX(sv);
1450 if (SvTYPE(sv) < SVt_NV) {
1451 if (SvTYPE(sv) == SVt_IV)
1452 sv_upgrade(sv, SVt_PVNV);
1454 sv_upgrade(sv, SVt_NV);
1455 DEBUG_c(SET_NUMERIC_STANDARD());
1456 DEBUG_c(PerlIO_printf(Perl_debug_log,
1457 "0x%lx num(%g)\n",(unsigned long)sv,SvNVX(sv)));
1459 else if (SvTYPE(sv) < SVt_PVNV)
1460 sv_upgrade(sv, SVt_PVNV);
1462 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
1464 SvNVX(sv) = (double)SvIVX(sv);
1466 else if (SvPOKp(sv) && SvLEN(sv)) {
1467 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1469 SET_NUMERIC_STANDARD();
1470 SvNVX(sv) = atof(SvPVX(sv));
1474 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1479 DEBUG_c(SET_NUMERIC_STANDARD());
1480 DEBUG_c(PerlIO_printf(Perl_debug_log,
1481 "0x%lx 2nv(%g)\n",(unsigned long)sv,SvNVX(sv)));
1488 I32 numtype = looks_like_number(sv);
1492 return atol(SvPVX(sv));
1493 if (!numtype && dowarn)
1495 SET_NUMERIC_STANDARD();
1496 d = atof(SvPVX(sv));
1506 I32 numtype = looks_like_number(sv);
1510 return strtoul(SvPVX(sv), Null(char**), 10);
1512 if (!numtype && dowarn)
1514 SET_NUMERIC_STANDARD();
1515 return U_V(atof(SvPVX(sv)));
1519 looks_like_number(SV *sv)
1522 register char *send;
1523 register char *sbegin;
1531 else if (SvPOKp(sv))
1532 sbegin = SvPV(sv, len);
1535 send = sbegin + len;
1540 if (*s == '+' || *s == '-')
1543 /* next must be digit or '.' */
1547 } while (isDIGIT(*s));
1550 while (isDIGIT(*s)) /* optional digits after "." */
1554 else if (*s == '.') {
1556 /* no digits before '.' means we need digits after it */
1560 } while (isDIGIT(*s));
1569 * we return 1 if the number can be converted to _integer_ with atol()
1570 * and 2 if you need (int)atof().
1574 /* we can have an optional exponent part */
1575 if (*s == 'e' || *s == 'E') {
1578 if (*s == '+' || *s == '-')
1583 } while (isDIGIT(*s));
1592 if (len == 10 && memEQ(sbegin, "0 but true", 10))
1598 sv_2pv(register SV *sv, STRLEN *lp)
1603 char tmpbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
1609 if (SvGMAGICAL(sv)) {
1616 (void)sprintf(tmpbuf,"%ld",(long)SvIVX(sv));
1621 SET_NUMERIC_STANDARD();
1622 Gconvert(SvNVX(sv), DBL_DIG, 0, tmpbuf);
1627 if (dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) {
1636 if (SvTHINKFIRST(sv)) {
1640 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)))
1641 return SvPV(tmpstr,*lp);
1642 #endif /* OVERLOAD */
1647 switch (SvTYPE(sv)) {
1656 case SVt_PVMG: s = "SCALAR"; break;
1657 case SVt_PVLV: s = "LVALUE"; break;
1658 case SVt_PVAV: s = "ARRAY"; break;
1659 case SVt_PVHV: s = "HASH"; break;
1660 case SVt_PVCV: s = "CODE"; break;
1661 case SVt_PVGV: s = "GLOB"; break;
1662 case SVt_PVFM: s = "FORMLINE"; break;
1663 case SVt_PVIO: s = "IO"; break;
1664 default: s = "UNKNOWN"; break;
1668 sv_setpvf(tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
1671 sv_catpvf(tsv, "(0x%lx)", (unsigned long)sv);
1677 if (SvREADONLY(sv)) {
1679 SET_NUMERIC_STANDARD();
1680 Gconvert(SvNVX(sv), DBL_DIG, 0, tmpbuf);
1685 (void)sprintf(tmpbuf,"%ld",(long)SvIVX(sv));
1695 if (!SvUPGRADE(sv, SVt_PV))
1698 if (SvTYPE(sv) < SVt_PVNV)
1699 sv_upgrade(sv, SVt_PVNV);
1702 olderrno = errno; /* some Xenix systems wipe out errno here */
1704 if (SvNVX(sv) == 0.0)
1705 (void)strcpy(s,"0");
1709 SET_NUMERIC_STANDARD();
1710 Gconvert(SvNVX(sv), DBL_DIG, 0, s);
1713 #ifdef FIXNEGATIVEZERO
1714 if (*s == '-' && s[1] == '0' && !s[2])
1723 else if (SvIOKp(sv)) {
1724 U32 oldIOK = SvIOK(sv);
1725 if (SvTYPE(sv) < SVt_PVIV)
1726 sv_upgrade(sv, SVt_PVIV);
1727 olderrno = errno; /* some Xenix systems wipe out errno here */
1728 sv_setpviv(sv, SvIVX(sv));
1738 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1743 *lp = s - SvPVX(sv);
1746 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2pv(%s)\n",(unsigned long)sv,SvPVX(sv)));
1750 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
1751 /* Sneaky stuff here */
1755 tsv = newSVpv(tmpbuf, 0);
1771 len = strlen(tmpbuf);
1773 #ifdef FIXNEGATIVEZERO
1774 if (len == 2 && t[0] == '-' && t[1] == '0') {
1779 (void)SvUPGRADE(sv, SVt_PV);
1781 s = SvGROW(sv, len + 1);
1789 /* This function is only called on magical items */
1791 sv_2bool(register SV *sv)
1803 if (SvAMAGIC(sv) && (tmpsv = AMG_CALLun(sv,bool_)))
1804 return SvTRUE(tmpsv);
1806 #endif /* OVERLOAD */
1807 return SvRV(sv) != 0;
1810 register XPV* Xpvtmp;
1811 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
1812 (*Xpvtmp->xpv_pv > '0' ||
1813 Xpvtmp->xpv_cur > 1 ||
1814 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
1821 return SvIVX(sv) != 0;
1824 return SvNVX(sv) != 0.0;
1831 /* Note: sv_setsv() should not be called with a source string that needs
1832 * to be reused, since it may destroy the source string if it is marked
1837 sv_setsv(SV *dstr, register SV *sstr)
1840 register U32 sflags;
1846 sv_check_thinkfirst(dstr);
1849 stype = SvTYPE(sstr);
1850 dtype = SvTYPE(dstr);
1852 if (dtype == SVt_PVGV && (SvFLAGS(dstr) & SVf_FAKE)) {
1853 sv_unglob(dstr); /* so fake GLOB won't perpetuate */
1854 sv_setpvn(dstr, "", 0);
1855 (void)SvPOK_only(dstr);
1856 dtype = SvTYPE(dstr);
1861 #endif /* OVERLOAD */
1862 /* There's a lot of redundancy below but we're going for speed here */
1866 (void)SvOK_off(dstr);
1869 if (dtype != SVt_IV && dtype < SVt_PVIV) {
1871 sv_upgrade(dstr, SVt_IV);
1872 else if (dtype == SVt_NV)
1873 sv_upgrade(dstr, SVt_PVNV);
1875 sv_upgrade(dstr, SVt_PVIV);
1879 if (dtype != SVt_NV && dtype < SVt_PVNV) {
1881 sv_upgrade(dstr, SVt_NV);
1883 sv_upgrade(dstr, SVt_PVNV);
1888 sv_upgrade(dstr, SVt_RV);
1889 else if (dtype == SVt_PVGV &&
1890 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
1893 if (curcop->cop_stash != GvSTASH(dstr))
1894 GvIMPORTED_on(dstr);
1904 sv_upgrade(dstr, SVt_PV);
1907 if (dtype < SVt_PVIV)
1908 sv_upgrade(dstr, SVt_PVIV);
1911 if (dtype < SVt_PVNV)
1912 sv_upgrade(dstr, SVt_PVNV);
1920 croak("Bizarre copy of %s in %s", sv_reftype(sstr, 0),
1921 op_name[op->op_type]);
1923 croak("Bizarre copy of %s", sv_reftype(sstr, 0));
1927 if (dtype <= SVt_PVGV) {
1929 if (dtype != SVt_PVGV) {
1930 char *name = GvNAME(sstr);
1931 STRLEN len = GvNAMELEN(sstr);
1932 sv_upgrade(dstr, SVt_PVGV);
1933 sv_magic(dstr, dstr, '*', name, len);
1934 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
1935 GvNAME(dstr) = savepvn(name, len);
1936 GvNAMELEN(dstr) = len;
1937 SvFAKE_on(dstr); /* can coerce to non-glob */
1939 /* ahem, death to those who redefine active sort subs */
1940 else if (curstack == sortstack
1941 && GvCV(dstr) && sortcop == CvSTART(GvCV(dstr)))
1942 croak("Can't redefine active sort subroutine %s",
1944 (void)SvOK_off(dstr);
1945 GvINTRO_off(dstr); /* one-shot flag */
1947 GvGP(dstr) = gp_ref(GvGP(sstr));
1949 if (curcop->cop_stash != GvSTASH(dstr))
1950 GvIMPORTED_on(dstr);
1957 if (SvGMAGICAL(sstr)) {
1959 if (SvTYPE(sstr) != stype) {
1960 stype = SvTYPE(sstr);
1961 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
1966 sv_upgrade(dstr, stype);
1969 sflags = SvFLAGS(sstr);
1971 if (sflags & SVf_ROK) {
1972 if (dtype >= SVt_PV) {
1973 if (dtype == SVt_PVGV) {
1975 SV *sref = SvREFCNT_inc(SvRV(sstr));
1977 int intro = GvINTRO(dstr);
1981 GvGP(dstr)->gp_refcnt--;
1982 GvINTRO_off(dstr); /* one-shot flag */
1983 Newz(602,gp, 1, GP);
1984 GvGP(dstr) = gp_ref(gp);
1985 GvSV(dstr) = NEWSV(72,0);
1986 GvLINE(dstr) = curcop->cop_line;
1987 GvEGV(dstr) = (GV*)dstr;
1990 switch (SvTYPE(sref)) {
1993 SAVESPTR(GvAV(dstr));
1995 dref = (SV*)GvAV(dstr);
1996 GvAV(dstr) = (AV*)sref;
1997 if (curcop->cop_stash != GvSTASH(dstr))
1998 GvIMPORTED_AV_on(dstr);
2002 SAVESPTR(GvHV(dstr));
2004 dref = (SV*)GvHV(dstr);
2005 GvHV(dstr) = (HV*)sref;
2006 if (curcop->cop_stash != GvSTASH(dstr))
2007 GvIMPORTED_HV_on(dstr);
2011 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2012 SvREFCNT_dec(GvCV(dstr));
2013 GvCV(dstr) = Nullcv;
2014 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2017 SAVESPTR(GvCV(dstr));
2020 dref = (SV*)GvCV(dstr);
2021 if (GvCV(dstr) != (CV*)sref) {
2022 CV* cv = GvCV(dstr);
2024 if (!GvCVGEN((GV*)dstr) &&
2025 (CvROOT(cv) || CvXSUB(cv)))
2027 /* ahem, death to those who redefine
2028 * active sort subs */
2029 if (curstack == sortstack &&
2030 sortcop == CvSTART(cv))
2032 "Can't redefine active sort subroutine %s",
2033 GvENAME((GV*)dstr));
2034 if (cv_const_sv(cv))
2035 warn("Constant subroutine %s redefined",
2036 GvENAME((GV*)dstr));
2038 warn("Subroutine %s redefined",
2039 GvENAME((GV*)dstr));
2041 cv_ckproto(cv, (GV*)dstr,
2042 SvPOK(sref) ? SvPVX(sref) : Nullch);
2044 GvCV(dstr) = (CV*)sref;
2045 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2046 GvASSUMECV_on(dstr);
2049 if (curcop->cop_stash != GvSTASH(dstr))
2050 GvIMPORTED_CV_on(dstr);
2054 SAVESPTR(GvIOp(dstr));
2056 dref = (SV*)GvIOp(dstr);
2057 GvIOp(dstr) = (IO*)sref;
2061 SAVESPTR(GvSV(dstr));
2063 dref = (SV*)GvSV(dstr);
2065 if (curcop->cop_stash != GvSTASH(dstr))
2066 GvIMPORTED_SV_on(dstr);
2077 (void)SvOOK_off(dstr); /* backoff */
2078 Safefree(SvPVX(dstr));
2079 SvLEN(dstr)=SvCUR(dstr)=0;
2082 (void)SvOK_off(dstr);
2083 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
2085 if (sflags & SVp_NOK) {
2087 SvNVX(dstr) = SvNVX(sstr);
2089 if (sflags & SVp_IOK) {
2090 (void)SvIOK_on(dstr);
2091 SvIVX(dstr) = SvIVX(sstr);
2094 if (SvAMAGIC(sstr)) {
2097 #endif /* OVERLOAD */
2099 else if (sflags & SVp_POK) {
2102 * Check to see if we can just swipe the string. If so, it's a
2103 * possible small lose on short strings, but a big win on long ones.
2104 * It might even be a win on short strings if SvPVX(dstr)
2105 * has to be allocated and SvPVX(sstr) has to be freed.
2108 if (SvTEMP(sstr) && /* slated for free anyway? */
2109 SvREFCNT(sstr) == 1 && /* and no other references to it? */
2110 !(sflags & SVf_OOK)) /* and not involved in OOK hack? */
2112 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
2114 SvFLAGS(dstr) &= ~SVf_OOK;
2115 Safefree(SvPVX(dstr) - SvIVX(dstr));
2118 Safefree(SvPVX(dstr));
2120 (void)SvPOK_only(dstr);
2121 SvPV_set(dstr, SvPVX(sstr));
2122 SvLEN_set(dstr, SvLEN(sstr));
2123 SvCUR_set(dstr, SvCUR(sstr));
2125 (void)SvOK_off(sstr);
2126 SvPV_set(sstr, Nullch);
2131 else { /* have to copy actual string */
2132 STRLEN len = SvCUR(sstr);
2134 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2135 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2136 SvCUR_set(dstr, len);
2137 *SvEND(dstr) = '\0';
2138 (void)SvPOK_only(dstr);
2141 if (sflags & SVp_NOK) {
2143 SvNVX(dstr) = SvNVX(sstr);
2145 if (sflags & SVp_IOK) {
2146 (void)SvIOK_on(dstr);
2147 SvIVX(dstr) = SvIVX(sstr);
2150 else if (sflags & SVp_NOK) {
2151 SvNVX(dstr) = SvNVX(sstr);
2152 (void)SvNOK_only(dstr);
2154 (void)SvIOK_on(dstr);
2155 SvIVX(dstr) = SvIVX(sstr);
2158 else if (sflags & SVp_IOK) {
2159 (void)SvIOK_only(dstr);
2160 SvIVX(dstr) = SvIVX(sstr);
2163 (void)SvOK_off(dstr);
2169 sv_setpvn(register SV *sv, register const char *ptr, register STRLEN len)
2171 assert(len >= 0); /* STRLEN is probably unsigned, so this may
2172 elicit a warning, but it won't hurt. */
2173 sv_check_thinkfirst(sv);
2178 if (SvTYPE(sv) >= SVt_PV) {
2179 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
2182 else if (!sv_upgrade(sv, SVt_PV))
2184 SvGROW(sv, len + 1);
2185 Move(ptr,SvPVX(sv),len,char);
2188 (void)SvPOK_only(sv); /* validate pointer */
2193 sv_setpv(register SV *sv, register const char *ptr)
2195 register STRLEN len;
2197 sv_check_thinkfirst(sv);
2203 if (SvTYPE(sv) >= SVt_PV) {
2204 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
2207 else if (!sv_upgrade(sv, SVt_PV))
2209 SvGROW(sv, len + 1);
2210 Move(ptr,SvPVX(sv),len+1,char);
2212 (void)SvPOK_only(sv); /* validate pointer */
2217 sv_usepvn(register SV *sv, register char *ptr, register STRLEN len)
2219 sv_check_thinkfirst(sv);
2220 if (!SvUPGRADE(sv, SVt_PV))
2227 Safefree(SvPVX(sv));
2228 Renew(ptr, len+1, char);
2231 SvLEN_set(sv, len+1);
2233 (void)SvPOK_only(sv); /* validate pointer */
2238 sv_check_thinkfirst(register SV *sv)
2240 if (SvTHINKFIRST(sv)) {
2241 if (SvREADONLY(sv)) {
2243 if (curcop != &compiling)
2252 sv_chop(register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
2256 register STRLEN delta;
2258 if (!ptr || !SvPOKp(sv))
2260 sv_check_thinkfirst(sv);
2261 if (SvTYPE(sv) < SVt_PVIV)
2262 sv_upgrade(sv,SVt_PVIV);
2266 SvFLAGS(sv) |= SVf_OOK;
2268 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK);
2269 delta = ptr - SvPVX(sv);
2277 sv_catpvn(register SV *sv, register char *ptr, register STRLEN len)
2282 junk = SvPV_force(sv, tlen);
2283 SvGROW(sv, tlen + len + 1);
2286 Move(ptr,SvPVX(sv)+tlen,len,char);
2289 (void)SvPOK_only(sv); /* validate pointer */
2294 sv_catsv(SV *dstr, register SV *sstr)
2300 if (s = SvPV(sstr, len))
2301 sv_catpvn(dstr,s,len);
2305 sv_catpv(register SV *sv, register char *ptr)
2307 register STRLEN len;
2313 junk = SvPV_force(sv, tlen);
2315 SvGROW(sv, tlen + len + 1);
2318 Move(ptr,SvPVX(sv)+tlen,len+1,char);
2320 (void)SvPOK_only(sv); /* validate pointer */
2326 newSV(I32 x, STRLEN len)
2338 sv_upgrade(sv, SVt_PV);
2339 SvGROW(sv, len + 1);
2344 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
2347 sv_magic(register SV *sv, SV *obj, int how, char *name, I32 namlen)
2351 if (SvREADONLY(sv)) {
2353 if (curcop != &compiling && !strchr("gBf", how))
2356 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
2357 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
2364 if (!SvUPGRADE(sv, SVt_PVMG))
2367 Newz(702,mg, 1, MAGIC);
2368 mg->mg_moremagic = SvMAGIC(sv);
2371 if (!obj || obj == sv || how == '#' || how == 'r')
2375 mg->mg_obj = SvREFCNT_inc(obj);
2376 mg->mg_flags |= MGf_REFCOUNTED;
2379 mg->mg_len = namlen;
2382 mg->mg_ptr = savepvn(name, namlen);
2383 else if (namlen == HEf_SVKEY)
2384 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
2388 mg->mg_virtual = &vtbl_sv;
2392 mg->mg_virtual = &vtbl_amagic;
2395 mg->mg_virtual = &vtbl_amagicelem;
2400 #endif /* OVERLOAD */
2402 mg->mg_virtual = &vtbl_bm;
2405 mg->mg_virtual = &vtbl_env;
2408 mg->mg_virtual = &vtbl_fm;
2411 mg->mg_virtual = &vtbl_envelem;
2414 mg->mg_virtual = &vtbl_mglob;
2417 mg->mg_virtual = &vtbl_isa;
2420 mg->mg_virtual = &vtbl_isaelem;
2423 mg->mg_virtual = &vtbl_nkeys;
2430 mg->mg_virtual = &vtbl_dbline;
2434 mg->mg_virtual = &vtbl_mutex;
2436 #endif /* USE_THREADS */
2437 #ifdef USE_LOCALE_COLLATE
2439 mg->mg_virtual = &vtbl_collxfrm;
2441 #endif /* USE_LOCALE_COLLATE */
2443 mg->mg_virtual = &vtbl_pack;
2447 mg->mg_virtual = &vtbl_packelem;
2450 mg->mg_virtual = &vtbl_regexp;
2453 mg->mg_virtual = &vtbl_sig;
2456 mg->mg_virtual = &vtbl_sigelem;
2459 mg->mg_virtual = &vtbl_taint;
2463 mg->mg_virtual = &vtbl_uvar;
2466 mg->mg_virtual = &vtbl_vec;
2469 mg->mg_virtual = &vtbl_substr;
2472 mg->mg_virtual = &vtbl_defelem;
2475 mg->mg_virtual = &vtbl_glob;
2478 mg->mg_virtual = &vtbl_arylen;
2481 mg->mg_virtual = &vtbl_pos;
2483 case '~': /* Reserved for use by extensions not perl internals. */
2484 /* Useful for attaching extension internal data to perl vars. */
2485 /* Note that multiple extensions may clash if magical scalars */
2486 /* etc holding private data from one are passed to another. */
2490 croak("Don't know how to handle magic of type '%c'", how);
2494 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
2498 sv_unmagic(SV *sv, int type)
2502 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
2505 for (mg = *mgp; mg; mg = *mgp) {
2506 if (mg->mg_type == type) {
2507 MGVTBL* vtbl = mg->mg_virtual;
2508 *mgp = mg->mg_moremagic;
2509 if (vtbl && vtbl->svt_free)
2510 (*vtbl->svt_free)(sv, mg);
2511 if (mg->mg_ptr && mg->mg_type != 'g')
2512 if (mg->mg_len >= 0)
2513 Safefree(mg->mg_ptr);
2514 else if (mg->mg_len == HEf_SVKEY)
2515 SvREFCNT_dec((SV*)mg->mg_ptr);
2516 if (mg->mg_flags & MGf_REFCOUNTED)
2517 SvREFCNT_dec(mg->mg_obj);
2521 mgp = &mg->mg_moremagic;
2525 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
2532 sv_insert(SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
2536 register char *midend;
2537 register char *bigend;
2541 croak("Can't modify non-existent substring");
2542 SvPV_force(bigstr, na);
2544 i = littlelen - len;
2545 if (i > 0) { /* string might grow */
2546 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
2547 mid = big + offset + len;
2548 midend = bigend = big + SvCUR(bigstr);
2551 while (midend > mid) /* shove everything down */
2552 *--bigend = *--midend;
2553 Move(little,big+offset,littlelen,char);
2559 Move(little,SvPVX(bigstr)+offset,len,char);
2564 big = SvPVX(bigstr);
2567 bigend = big + SvCUR(bigstr);
2569 if (midend > bigend)
2570 croak("panic: sv_insert");
2572 if (mid - big > bigend - midend) { /* faster to shorten from end */
2574 Move(little, mid, littlelen,char);
2577 i = bigend - midend;
2579 Move(midend, mid, i,char);
2583 SvCUR_set(bigstr, mid - big);
2586 else if (i = mid - big) { /* faster from front */
2587 midend -= littlelen;
2589 sv_chop(bigstr,midend-i);
2594 Move(little, mid, littlelen,char);
2596 else if (littlelen) {
2597 midend -= littlelen;
2598 sv_chop(bigstr,midend);
2599 Move(little,midend,littlelen,char);
2602 sv_chop(bigstr,midend);
2607 /* make sv point to what nstr did */
2610 sv_replace(register SV *sv, register SV *nsv)
2612 U32 refcnt = SvREFCNT(sv);
2613 sv_check_thinkfirst(sv);
2614 if (SvREFCNT(nsv) != 1)
2615 warn("Reference miscount in sv_replace()");
2616 if (SvMAGICAL(sv)) {
2620 sv_upgrade(nsv, SVt_PVMG);
2621 SvMAGIC(nsv) = SvMAGIC(sv);
2622 SvFLAGS(nsv) |= SvMAGICAL(sv);
2628 assert(!SvREFCNT(sv));
2629 StructCopy(nsv,sv,SV);
2630 SvREFCNT(sv) = refcnt;
2631 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
2636 sv_clear(register SV *sv)
2639 assert(SvREFCNT(sv) == 0);
2643 if (defstash) { /* Still have a symbol table? */
2648 SAVEFREESV(SvSTASH(sv));
2650 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
2655 sv_upgrade(&ref, SVt_RV);
2656 SvRV(&ref) = SvREFCNT_inc(sv);
2658 SvREFCNT(&ref) = 1; /* Fake, but otherwise
2659 creating+destructing a ref
2660 leads to disaster. */
2666 perl_call_sv((SV*)GvCV(destructor),
2667 G_DISCARD|G_EVAL|G_KEEPERR);
2668 del_XRV(SvANY(&ref));
2675 SvREFCNT_dec(SvSTASH(sv));
2677 SvOBJECT_off(sv); /* Curse the object. */
2678 if (SvTYPE(sv) != SVt_PVIO)
2679 --sv_objcount; /* XXX Might want something more general */
2683 croak("DESTROY created new reference to dead object");
2684 /* DESTROY gave object new lease on life */
2688 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
2690 switch (SvTYPE(sv)) {
2692 if (IoIFP(sv) != PerlIO_stdin() &&
2693 IoIFP(sv) != PerlIO_stdout() &&
2694 IoIFP(sv) != PerlIO_stderr())
2696 Safefree(IoTOP_NAME(sv));
2697 Safefree(IoFMT_NAME(sv));
2698 Safefree(IoBOTTOM_NAME(sv));
2714 Safefree(GvNAME(sv));
2715 SvREFCNT_dec(GvSTASH(sv));
2722 (void)SvOOK_off(sv);
2727 SvREFCNT_dec(SvRV(sv));
2728 else if (SvPVX(sv) && SvLEN(sv))
2729 Safefree(SvPVX(sv));
2739 switch (SvTYPE(sv)) {
2755 del_XPVIV(SvANY(sv));
2758 del_XPVNV(SvANY(sv));
2761 del_XPVMG(SvANY(sv));
2764 del_XPVLV(SvANY(sv));
2767 del_XPVAV(SvANY(sv));
2770 del_XPVHV(SvANY(sv));
2773 del_XPVCV(SvANY(sv));
2776 del_XPVGV(SvANY(sv));
2779 del_XPVBM(SvANY(sv));
2782 del_XPVFM(SvANY(sv));
2785 del_XPVIO(SvANY(sv));
2788 SvFLAGS(sv) &= SVf_BREAK;
2789 SvFLAGS(sv) |= SVTYPEMASK;
2805 if (SvREADONLY(sv)) {
2806 if (sv == &sv_undef || sv == &sv_yes || sv == &sv_no)
2809 if (SvREFCNT(sv) == 0) {
2810 if (SvFLAGS(sv) & SVf_BREAK)
2812 if (in_clean_all) /* All is fair */
2814 warn("Attempt to free unreferenced scalar");
2817 if (--SvREFCNT(sv) > 0)
2821 warn("Attempt to free temp prematurely: %s", SvPEEK(sv));
2831 sv_len(register SV *sv)
2842 junk = SvPV(sv, len);
2847 sv_eq(register SV *str1, register SV *str2)
2859 pv1 = SvPV(str1, cur1);
2864 pv2 = SvPV(str2, cur2);
2869 return memEQ(pv1, pv2, cur1);
2873 sv_cmp(register SV *str1, register SV *str2)
2876 char *pv1 = str1 ? SvPV(str1, cur1) : (char *) NULL;
2878 char *pv2 = str2 ? SvPV(str2, cur2) : (char *) NULL;
2882 return cur2 ? -1 : 0;
2887 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
2890 return retval < 0 ? -1 : 1;
2895 return cur1 < cur2 ? -1 : 1;
2899 sv_cmp_locale(register SV *sv1, register SV *sv2)
2901 #ifdef USE_LOCALE_COLLATE
2907 if (collation_standard)
2911 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
2913 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
2915 if (!pv1 || !len1) {
2926 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
2929 return retval < 0 ? -1 : 1;
2932 * When the result of collation is equality, that doesn't mean
2933 * that there are no differences -- some locales exclude some
2934 * characters from consideration. So to avoid false equalities,
2935 * we use the raw string as a tiebreaker.
2941 #endif /* USE_LOCALE_COLLATE */
2943 return sv_cmp(sv1, sv2);
2946 #ifdef USE_LOCALE_COLLATE
2948 * Any scalar variable may carry an 'o' magic that contains the
2949 * scalar data of the variable transformed to such a format that
2950 * a normal memory comparison can be used to compare the data
2951 * according to the locale settings.
2954 sv_collxfrm(SV *sv, STRLEN *nxp)
2958 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
2959 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != collation_ix) {
2964 Safefree(mg->mg_ptr);
2966 if ((xf = mem_collxfrm(s, len, &xlen))) {
2967 if (SvREADONLY(sv)) {
2970 return xf + sizeof(collation_ix);
2973 sv_magic(sv, 0, 'o', 0, 0);
2974 mg = mg_find(sv, 'o');
2987 if (mg && mg->mg_ptr) {
2989 return mg->mg_ptr + sizeof(collation_ix);
2997 #endif /* USE_LOCALE_COLLATE */
3000 sv_gets(register SV *sv, register PerlIO *fp, I32 append)
3005 register STDCHAR rslast;
3006 register STDCHAR *bp;
3010 sv_check_thinkfirst(sv);
3011 if (!SvUPGRADE(sv, SVt_PV))
3019 else if (RsPARA(rs)) {
3024 rsptr = SvPV(rs, rslen);
3025 rslast = rslen ? rsptr[rslen - 1] : '\0';
3027 if (RsPARA(rs)) { /* have to do this both before and after */
3028 do { /* to make sure file boundaries work right */
3031 i = PerlIO_getc(fp);
3035 PerlIO_ungetc(fp,i);
3041 /* See if we know enough about I/O mechanism to cheat it ! */
3043 /* This used to be #ifdef test - it is made run-time test for ease
3044 of abstracting out stdio interface. One call should be cheap
3045 enough here - and may even be a macro allowing compile
3049 if (PerlIO_fast_gets(fp)) {
3052 * We're going to steal some values from the stdio struct
3053 * and put EVERYTHING in the innermost loop into registers.
3055 register STDCHAR *ptr;
3059 #if defined(VMS) && defined(PERLIO_IS_STDIO)
3060 /* An ungetc()d char is handled separately from the regular
3061 * buffer, so we getc() it back out and stuff it in the buffer.
3063 i = PerlIO_getc(fp);
3064 if (i == EOF) return 0;
3065 *(--((*fp)->_ptr)) = (unsigned char) i;
3069 /* Here is some breathtakingly efficient cheating */
3071 cnt = PerlIO_get_cnt(fp); /* get count into register */
3072 (void)SvPOK_only(sv); /* validate pointer */
3073 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
3074 if (cnt > 80 && SvLEN(sv) > append) {
3075 shortbuffered = cnt - SvLEN(sv) + append + 1;
3076 cnt -= shortbuffered;
3080 /* remember that cnt can be negative */
3081 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
3086 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
3087 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
3088 DEBUG_P(PerlIO_printf(Perl_debug_log,
3089 "Screamer: entering, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt));
3090 DEBUG_P(PerlIO_printf(Perl_debug_log,
3091 "Screamer: entering: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n",
3092 (long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp),
3093 (long)(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
3098 while (cnt > 0) { /* this | eat */
3100 if ((*bp++ = *ptr++) == rslast) /* really | dust */
3101 goto thats_all_folks; /* screams | sed :-) */
3105 Copy(ptr, bp, cnt, char); /* this | eat */
3106 bp += cnt; /* screams | dust */
3107 ptr += cnt; /* louder | sed :-) */
3112 if (shortbuffered) { /* oh well, must extend */
3113 cnt = shortbuffered;
3115 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
3117 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
3118 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
3122 DEBUG_P(PerlIO_printf(Perl_debug_log,
3123 "Screamer: going to getc, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt));
3124 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
3125 DEBUG_P(PerlIO_printf(Perl_debug_log,
3126 "Screamer: pre: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n",
3127 (long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp),
3128 (long)(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
3129 /* This used to call 'filbuf' in stdio form, but as that behaves like
3130 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
3131 another abstraction. */
3132 i = PerlIO_getc(fp); /* get more characters */
3133 DEBUG_P(PerlIO_printf(Perl_debug_log,
3134 "Screamer: post: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n",
3135 (long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp),
3136 (long)(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
3137 cnt = PerlIO_get_cnt(fp);
3138 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
3139 DEBUG_P(PerlIO_printf(Perl_debug_log,
3140 "Screamer: after getc, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt));
3142 if (i == EOF) /* all done for ever? */
3143 goto thats_really_all_folks;
3145 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
3147 SvGROW(sv, bpx + cnt + 2);
3148 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
3150 *bp++ = i; /* store character from PerlIO_getc */
3152 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
3153 goto thats_all_folks;
3157 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
3158 memNE((char*)bp - rslen, rsptr, rslen))
3159 goto screamer; /* go back to the fray */
3160 thats_really_all_folks:
3162 cnt += shortbuffered;
3163 DEBUG_P(PerlIO_printf(Perl_debug_log,
3164 "Screamer: quitting, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt));
3165 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
3166 DEBUG_P(PerlIO_printf(Perl_debug_log,
3167 "Screamer: end: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n",
3168 (long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp),
3169 (long)(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
3171 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
3172 DEBUG_P(PerlIO_printf(Perl_debug_log,
3173 "Screamer: done, len=%ld, string=|%.*s|\n",
3174 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
3178 /*The big, slow, and stupid way */
3183 register STDCHAR *bpe = buf + sizeof(buf);
3185 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
3186 ; /* keep reading */
3190 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
3191 /* Accomodate broken VAXC compiler, which applies U8 cast to
3192 * both args of ?: operator, causing EOF to change into 255
3194 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
3198 sv_catpvn(sv, (char *) buf, cnt);
3200 sv_setpvn(sv, (char *) buf, cnt);
3202 if (i != EOF && /* joy */
3204 SvCUR(sv) < rslen ||
3205 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
3209 * If we're reading from a TTY and we get a short read,
3210 * indicating that the user hit his EOF character, we need
3211 * to notice it now, because if we try to read from the TTY
3212 * again, the EOF condition will disappear.
3214 * The comparison of cnt to sizeof(buf) is an optimization
3215 * that prevents unnecessary calls to feof().
3219 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
3224 if (RsPARA(rs)) { /* have to do this both before and after */
3225 while (i != EOF) { /* to make sure file boundaries work right */
3226 i = PerlIO_getc(fp);
3228 PerlIO_ungetc(fp,i);
3235 win32_strip_return(sv);
3238 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
3243 sv_inc(register SV *sv)
3250 if (SvTHINKFIRST(sv)) {
3251 if (SvREADONLY(sv)) {
3253 if (curcop != &compiling)
3258 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) return;
3259 #endif /* OVERLOAD */
3265 flags = SvFLAGS(sv);
3266 if (flags & SVp_NOK) {
3267 (void)SvNOK_only(sv);
3271 if (flags & SVp_IOK) {
3272 if (SvIVX(sv) == IV_MAX)
3273 sv_setnv(sv, (double)IV_MAX + 1.0);
3275 (void)SvIOK_only(sv);
3280 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
3281 if ((flags & SVTYPEMASK) < SVt_PVNV)
3282 sv_upgrade(sv, SVt_NV);
3284 (void)SvNOK_only(sv);
3288 while (isALPHA(*d)) d++;
3289 while (isDIGIT(*d)) d++;
3291 SET_NUMERIC_STANDARD();
3292 sv_setnv(sv,atof(SvPVX(sv)) + 1.0); /* punt */
3296 while (d >= SvPVX(sv)) {
3306 *(d--) -= 'z' - 'a' + 1;
3309 /* oh,oh, the number grew */
3310 SvGROW(sv, SvCUR(sv) + 2);
3312 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
3321 sv_dec(register SV *sv)
3327 if (SvTHINKFIRST(sv)) {
3328 if (SvREADONLY(sv)) {
3330 if (curcop != &compiling)
3335 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) return;
3336 #endif /* OVERLOAD */
3342 flags = SvFLAGS(sv);
3343 if (flags & SVp_NOK) {
3345 (void)SvNOK_only(sv);
3348 if (flags & SVp_IOK) {
3349 if (SvIVX(sv) == IV_MIN)
3350 sv_setnv(sv, (double)IV_MIN - 1.0);
3352 (void)SvIOK_only(sv);
3357 if (!(flags & SVp_POK)) {
3358 if ((flags & SVTYPEMASK) < SVt_PVNV)
3359 sv_upgrade(sv, SVt_NV);
3361 (void)SvNOK_only(sv);
3364 SET_NUMERIC_STANDARD();
3365 sv_setnv(sv,atof(SvPVX(sv)) - 1.0); /* punt */
3368 /* Make a string that will exist for the duration of the expression
3369 * evaluation. Actually, it may have to last longer than that, but
3370 * hopefully we won't free it until it has been assigned to a
3371 * permanent location. */
3377 tmps_max += (tmps_max < 512) ? 128 : 512;
3378 Renew(tmps_stack, tmps_max, SV*);
3382 sv_mortalcopy(SV *oldstr)
3391 sv_setsv(sv,oldstr);
3392 if (++tmps_ix >= tmps_max)
3394 tmps_stack[tmps_ix] = sv;
3408 SvFLAGS(sv) = SVs_TEMP;
3409 if (++tmps_ix >= tmps_max)
3411 tmps_stack[tmps_ix] = sv;
3415 /* same thing without the copying */
3418 sv_2mortal(register SV *sv)
3423 if (SvREADONLY(sv) && curcop != &compiling)
3425 if (++tmps_ix >= tmps_max)
3427 tmps_stack[tmps_ix] = sv;
3433 newSVpv(char *s, STRLEN len)
3443 sv_setpvn(sv,s,len);
3458 sv_setpvn(sv,s,len);
3464 newSVpvf(const char* pat, ...)
3468 newSVpvf(pat, va_alist)
3481 va_start(args, pat);
3485 sv_vsetpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
3527 sv_upgrade(sv, SVt_RV);
3529 SvRV(sv) = SvREFCNT_inc(ref);
3537 Perl_newRV_noinc(SV *ref)
3546 /* make an exact duplicate of old */
3549 newSVsv(register SV *old)
3555 if (SvTYPE(old) == SVTYPEMASK) {
3556 warn("semi-panic: attempt to dup freed string");
3574 sv_reset(register char *s, HV *stash)
3587 if (!*s) { /* reset ?? searches */
3588 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
3589 pm->op_pmflags &= ~PMf_USED;
3594 /* reset variables */
3596 if (!HvARRAY(stash))
3599 Zero(todo, 256, char);
3606 for ( ; i <= max; i++) {
3609 for (i = 0; i <= (I32) HvMAX(stash); i++) {
3610 for (entry = HvARRAY(stash)[i];
3612 entry = HeNEXT(entry)) {
3613 if (!todo[(U8)*HeKEY(entry)])
3615 gv = (GV*)HeVAL(entry);
3618 if (SvTYPE(sv) >= SVt_PV) {
3620 if (SvPVX(sv) != Nullch)
3627 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
3629 #ifndef VMS /* VMS has no environ array */
3631 environ[0] = Nullch;
3645 switch (SvTYPE(sv)) {
3653 croak("Bad filehandle: %s", GvNAME(gv));
3657 croak(no_usym, "filehandle");
3659 return sv_2io(SvRV(sv));
3660 gv = gv_fetchpv(SvPV(sv,na), FALSE, SVt_PVIO);
3666 croak("Bad filehandle: %s", SvPV(sv,na));
3673 sv_2cv(SV *sv, HV **st, GV **gvp, I32 lref)
3679 return *gvp = Nullgv, Nullcv;
3680 switch (SvTYPE(sv)) {
3700 if (SvTYPE(cv) != SVt_PVCV)
3701 croak("Not a subroutine reference");
3709 gv = gv_fetchpv(SvPV(sv, na), lref, SVt_PVCV);
3715 if (lref && !GvCVu(gv)) {
3718 tmpsv = NEWSV(704,0);
3719 gv_efullname3(tmpsv, gv, Nullch);
3720 newSUB(start_subparse(FALSE, 0),
3721 newSVOP(OP_CONST, 0, tmpsv),
3726 croak("Unable to create sub named \"%s\"", SvPV(sv,na));
3733 sv_true(register SV *sv)
3740 if ((tXpv = (XPV*)SvANY(sv)) &&
3741 (*tXpv->xpv_pv > '0' ||
3742 tXpv->xpv_cur > 1 ||
3743 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
3750 return SvIVX(sv) != 0;
3753 return SvNVX(sv) != 0.0;
3755 return sv_2bool(sv);
3761 sv_iv(register SV *sv)
3769 sv_uv(register SV *sv)
3777 sv_nv(register SV *sv)
3785 sv_pvn(SV *sv, STRLEN *lp)
3791 return sv_2pv(sv, lp);
3795 sv_pvn_force(SV *sv, STRLEN *lp)
3799 if (SvREADONLY(sv)) {
3801 if (curcop != &compiling)
3809 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
3810 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) {
3817 croak("Can't coerce %s to string in %s", sv_reftype(sv,0),
3818 op_name[op->op_type]);
3823 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
3828 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
3829 SvGROW(sv, len + 1);
3830 Move(s,SvPVX(sv),len,char);
3835 SvPOK_on(sv); /* validate pointer */
3837 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2pv(%s)\n",
3838 (unsigned long)sv,SvPVX(sv)));
3845 sv_reftype(SV *sv, int ob)
3847 if (ob && SvOBJECT(sv))
3848 return HvNAME(SvSTASH(sv));
3850 switch (SvTYPE(sv)) {
3864 case SVt_PVLV: return "LVALUE";
3865 case SVt_PVAV: return "ARRAY";
3866 case SVt_PVHV: return "HASH";
3867 case SVt_PVCV: return "CODE";
3868 case SVt_PVGV: return "GLOB";
3869 case SVt_PVFM: return "FORMLINE";
3870 default: return "UNKNOWN";
3891 sv_isa(SV *sv, char *name)
3903 return strEQ(HvNAME(SvSTASH(sv)), name);
3907 newSVrv(SV *rv, char *classname)
3917 sv_check_thinkfirst(rv);
3920 #endif /* OVERLOAD */
3922 if (SvTYPE(rv) < SVt_RV)
3923 sv_upgrade(rv, SVt_RV);
3926 SvRV(rv) = SvREFCNT_inc(sv);
3930 HV* stash = gv_stashpv(classname, TRUE);
3931 (void)sv_bless(rv, stash);
3937 sv_setref_pv(SV *rv, char *classname, void *pv)
3940 sv_setsv(rv, &sv_undef);
3944 sv_setiv(newSVrv(rv,classname), (IV)pv);
3949 sv_setref_iv(SV *rv, char *classname, IV iv)
3951 sv_setiv(newSVrv(rv,classname), iv);
3956 sv_setref_nv(SV *rv, char *classname, double nv)
3958 sv_setnv(newSVrv(rv,classname), nv);
3963 sv_setref_pvn(SV *rv, char *classname, char *pv, I32 n)
3965 sv_setpvn(newSVrv(rv,classname), pv, n);
3970 sv_bless(SV *sv, HV *stash)
3975 croak("Can't bless non-reference value");
3977 if (SvFLAGS(ref) & (SVs_OBJECT|SVf_READONLY)) {
3978 if (SvREADONLY(ref))
3980 if (SvOBJECT(ref)) {
3981 if (SvTYPE(ref) != SVt_PVIO)
3983 SvREFCNT_dec(SvSTASH(ref));
3987 if (SvTYPE(ref) != SVt_PVIO)
3989 (void)SvUPGRADE(ref, SVt_PVMG);
3990 SvSTASH(ref) = (HV*)SvREFCNT_inc(stash);
3997 #endif /* OVERLOAD */
4005 assert(SvTYPE(sv) == SVt_PVGV);
4009 sv_unmagic(sv, '*');
4010 Safefree(GvNAME(sv));
4012 SvFLAGS(sv) &= ~SVTYPEMASK;
4013 SvFLAGS(sv) |= SVt_PVMG;
4023 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
4026 sv_2mortal(rv); /* Schedule for freeing later */
4032 sv_magic((sv), Nullsv, 't', Nullch, 0);
4038 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
4039 MAGIC *mg = mg_find(sv, 't');
4048 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
4049 MAGIC *mg = mg_find(sv, 't');
4050 if (mg && ((mg->mg_len & 1) || (mg->mg_len & 2) && mg->mg_obj == sv))
4057 sv_setpviv(SV *sv, IV iv)
4060 char buf[TYPE_DIGITS(UV)];
4061 char *ptr = buf + sizeof(buf);
4066 sv_setpvn(sv, "", 0);
4075 *--ptr = '0' + (uv % 10);
4077 len = (buf + sizeof(buf)) - ptr;
4078 /* taking advantage of SvCUR(sv) == 0 */
4079 SvGROW(sv, sign + len + 1);
4083 memcpy(p, ptr, len);
4086 SvCUR(sv) = p - SvPVX(sv);
4091 sv_setpvf(SV *sv, const char* pat, ...)
4095 sv_setpvf(sv, pat, va_alist)
4103 va_start(args, pat);
4107 sv_vsetpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
4113 sv_catpvf(SV *sv, const char* pat, ...)
4117 sv_catpvf(sv, pat, va_alist)
4125 va_start(args, pat);
4129 sv_vcatpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
4134 sv_vsetpvfn(SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *used_locale)
4136 sv_setpvn(sv, "", 0);
4137 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, used_locale);
4141 sv_vcatpvfn(SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *used_locale)
4149 static char nullstr[] = "(null)";
4151 /* no matter what, this is a string now */
4152 (void)SvPV_force(sv, origlen);
4154 /* special-case "", "%s", and "%_" */
4157 if (patlen == 2 && pat[0] == '%') {
4161 char *s = va_arg(*args, char*);
4162 sv_catpv(sv, s ? s : nullstr);
4164 else if (svix < svmax)
4165 sv_catsv(sv, *svargs);
4169 sv_catsv(sv, va_arg(*args, SV*));
4172 /* See comment on '_' below */
4177 patend = (char*)pat + patlen;
4178 for (p = (char*)pat; p < patend; p = q) {
4186 bool has_precis = FALSE;
4190 STRLEN esignlen = 0;
4192 char *eptr = Nullch;
4194 char ebuf[TYPE_DIGITS(int) * 2 + 16]; /* large enough for "%#.#f" */
4196 static char *efloatbuf = Nullch;
4197 static STRLEN efloatsize = 0;
4209 for (q = p; q < patend && *q != '%'; ++q) ;
4211 sv_catpvn(sv, p, q - p);
4249 case '1': case '2': case '3':
4250 case '4': case '5': case '6':
4251 case '7': case '8': case '9':
4254 width = width * 10 + (*q++ - '0');
4259 i = va_arg(*args, int);
4261 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
4263 width = (i < 0) ? -i : i;
4274 i = va_arg(*args, int);
4276 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
4277 precis = (i < 0) ? 0 : i;
4283 precis = precis * 10 + (*q++ - '0');
4292 #if 0 /* when quads have better support within Perl */
4293 if (*(q + 1) == 'l') {
4319 c = va_arg(*args, int);
4321 c = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
4328 eptr = va_arg(*args, char*);
4330 elen = strlen(eptr);
4333 elen = sizeof nullstr - 1;
4336 else if (svix < svmax)
4337 eptr = SvPVx(svargs[svix++], elen);
4342 * The "%_" hack might have to be changed someday,
4343 * if ISO or ANSI decide to use '_' for something.
4344 * So we keep it hidden from users' code.
4348 eptr = SvPVx(va_arg(*args, SV*), elen);
4351 if (has_precis && elen > precis)
4359 uv = (UV)va_arg(*args, void*);
4361 uv = (svix < svmax) ? (UV)svargs[svix++] : 0;
4372 case 'h': iv = (short)va_arg(*args, int); break;
4373 default: iv = va_arg(*args, int); break;
4374 case 'l': iv = va_arg(*args, long); break;
4375 case 'V': iv = va_arg(*args, IV); break;
4379 iv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
4381 case 'h': iv = (short)iv; break;
4382 default: iv = (int)iv; break;
4383 case 'l': iv = (long)iv; break;
4390 esignbuf[esignlen++] = plus;
4394 esignbuf[esignlen++] = '-';
4420 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
4421 default: uv = va_arg(*args, unsigned); break;
4422 case 'l': uv = va_arg(*args, unsigned long); break;
4423 case 'V': uv = va_arg(*args, UV); break;
4427 uv = (svix < svmax) ? SvUVx(svargs[svix++]) : 0;
4429 case 'h': uv = (unsigned short)uv; break;
4430 default: uv = (unsigned)uv; break;
4431 case 'l': uv = (unsigned long)uv; break;
4437 eptr = ebuf + sizeof ebuf;
4441 p = (c == 'X') ? "0123456789ABCDEF" : "0123456789abcdef";
4447 esignbuf[esignlen++] = '0';
4448 esignbuf[esignlen++] = c; /* 'x' or 'X' */
4454 *--eptr = '0' + dig;
4456 if (alt && *eptr != '0')
4459 default: /* it had better be ten or less */
4462 *--eptr = '0' + dig;
4463 } while (uv /= base);
4466 elen = (ebuf + sizeof ebuf) - eptr;
4467 if (has_precis && precis > elen)
4468 zeros = precis - elen;
4471 /* FLOATING POINT */
4474 c = 'f'; /* maybe %F isn't supported here */
4480 /* This is evil, but floating point is even more evil */
4483 nv = va_arg(*args, double);
4485 nv = (svix < svmax) ? SvNVx(svargs[svix++]) : 0.0;
4488 if (c != 'e' && c != 'E') {
4490 (void)frexp(nv, &i);
4491 if (i == PERL_INT_MIN)
4492 die("panic: frexp");
4494 need = BIT_DIGITS(i);
4496 need += has_precis ? precis : 6; /* known default */
4500 need += 20; /* fudge factor */
4501 if (efloatsize < need) {
4502 Safefree(efloatbuf);
4503 efloatsize = need + 20; /* more fudge */
4504 New(906, efloatbuf, efloatsize, char);
4507 eptr = ebuf + sizeof ebuf;
4512 do { *--eptr = '0' + (base % 10); } while (base /= 10);
4517 do { *--eptr = '0' + (base % 10); } while (base /= 10);
4529 (void)sprintf(efloatbuf, eptr, nv);
4532 elen = strlen(efloatbuf);
4536 * User-defined locales may include arbitrary characters.
4537 * And, unfortunately, some system may alloc the "C" locale
4538 * to be overridden by a malicious user.
4541 *used_locale = TRUE;
4542 #endif /* LC_NUMERIC */
4549 i = SvCUR(sv) - origlen;
4552 case 'h': *(va_arg(*args, short*)) = i; break;
4553 default: *(va_arg(*args, int*)) = i; break;
4554 case 'l': *(va_arg(*args, long*)) = i; break;
4555 case 'V': *(va_arg(*args, IV*)) = i; break;
4558 else if (svix < svmax)
4559 sv_setuv(svargs[svix++], (UV)i);
4560 continue; /* not "break" */
4566 if (!args && dowarn &&
4567 (op->op_type == OP_PRTF || op->op_type == OP_SPRINTF)) {
4568 SV *msg = sv_newmortal();
4569 sv_setpvf(msg, "Invalid conversion in %s: ",
4570 (op->op_type == OP_PRTF) ? "printf" : "sprintf");
4572 sv_catpvf(msg, isPRINT(c) ? "\"%%%c\"" : "\"%%\\%03o\"",
4575 sv_catpv(msg, "end of string");
4576 warn("%_", msg); /* yes, this is reentrant */
4579 /* output mangled stuff ... */
4585 /* ... right here, because formatting flags should not apply */
4586 SvGROW(sv, SvCUR(sv) + elen + 1);
4588 memcpy(p, eptr, elen);
4591 SvCUR(sv) = p - SvPVX(sv);
4592 continue; /* not "break" */
4595 have = esignlen + zeros + elen;
4596 need = (have > width ? have : width);
4599 SvGROW(sv, SvCUR(sv) + need + 1);
4601 if (esignlen && fill == '0') {
4602 for (i = 0; i < esignlen; i++)
4606 memset(p, fill, gap);
4609 if (esignlen && fill != '0') {
4610 for (i = 0; i < esignlen; i++)
4614 for (i = zeros; i; i--)
4618 memcpy(p, eptr, elen);
4622 memset(p, ' ', gap);
4626 SvCUR(sv) = p - SvPVX(sv);
4634 SV *d = sv_newmortal();
4640 PerlIO_printf(Perl_debug_log, "SV = 0\n");
4644 flags = SvFLAGS(sv);
4647 sv_setpvf(d, "(0x%lx)\n REFCNT = %ld\n FLAGS = (",
4648 (unsigned long)SvANY(sv), (long)SvREFCNT(sv));
4649 if (flags & SVs_PADBUSY) sv_catpv(d, "PADBUSY,");
4650 if (flags & SVs_PADTMP) sv_catpv(d, "PADTMP,");
4651 if (flags & SVs_PADMY) sv_catpv(d, "PADMY,");
4652 if (flags & SVs_TEMP) sv_catpv(d, "TEMP,");
4653 if (flags & SVs_OBJECT) sv_catpv(d, "OBJECT,");
4654 if (flags & SVs_GMG) sv_catpv(d, "GMG,");
4655 if (flags & SVs_SMG) sv_catpv(d, "SMG,");
4656 if (flags & SVs_RMG) sv_catpv(d, "RMG,");
4658 if (flags & SVf_IOK) sv_catpv(d, "IOK,");
4659 if (flags & SVf_NOK) sv_catpv(d, "NOK,");
4660 if (flags & SVf_POK) sv_catpv(d, "POK,");
4661 if (flags & SVf_ROK) sv_catpv(d, "ROK,");
4662 if (flags & SVf_OOK) sv_catpv(d, "OOK,");
4663 if (flags & SVf_FAKE) sv_catpv(d, "FAKE,");
4664 if (flags & SVf_READONLY) sv_catpv(d, "READONLY,");
4667 if (flags & SVf_AMAGIC) sv_catpv(d, "OVERLOAD,");
4668 #endif /* OVERLOAD */
4669 if (flags & SVp_IOK) sv_catpv(d, "pIOK,");
4670 if (flags & SVp_NOK) sv_catpv(d, "pNOK,");
4671 if (flags & SVp_POK) sv_catpv(d, "pPOK,");
4672 if (flags & SVp_SCREAM) sv_catpv(d, "SCREAM,");
4677 if (CvANON(sv)) sv_catpv(d, "ANON,");
4678 if (CvUNIQUE(sv)) sv_catpv(d, "UNIQUE,");
4679 if (CvCLONE(sv)) sv_catpv(d, "CLONE,");
4680 if (CvCLONED(sv)) sv_catpv(d, "CLONED,");
4681 if (CvNODEBUG(sv)) sv_catpv(d, "NODEBUG,");
4684 if (HvSHAREKEYS(sv)) sv_catpv(d, "SHAREKEYS,");
4685 if (HvLAZYDEL(sv)) sv_catpv(d, "LAZYDEL,");
4688 if (GvINTRO(sv)) sv_catpv(d, "INTRO,");
4689 if (GvMULTI(sv)) sv_catpv(d, "MULTI,");
4690 if (GvASSUMECV(sv)) sv_catpv(d, "ASSUMECV,");
4691 if (GvIMPORTED(sv)) {
4692 sv_catpv(d, "IMPORT");
4693 if (GvIMPORTED(sv) == GVf_IMPORTED)
4694 sv_catpv(d, "ALL,");
4697 if (GvIMPORTED_SV(sv)) sv_catpv(d, " SV");
4698 if (GvIMPORTED_AV(sv)) sv_catpv(d, " AV");
4699 if (GvIMPORTED_HV(sv)) sv_catpv(d, " HV");
4700 if (GvIMPORTED_CV(sv)) sv_catpv(d, " CV");
4705 if (SvTAIL(sv)) sv_catpv(d, "TAIL,");
4706 if (SvCOMPILED(sv)) sv_catpv(d, "COMPILED,");
4710 if (*(SvEND(d) - 1) == ',')
4711 SvPVX(d)[--SvCUR(d)] = '\0';
4715 PerlIO_printf(Perl_debug_log, "SV = ");
4718 PerlIO_printf(Perl_debug_log, "NULL%s\n", s);
4721 PerlIO_printf(Perl_debug_log, "IV%s\n", s);
4724 PerlIO_printf(Perl_debug_log, "NV%s\n", s);
4727 PerlIO_printf(Perl_debug_log, "RV%s\n", s);
4730 PerlIO_printf(Perl_debug_log, "PV%s\n", s);
4733 PerlIO_printf(Perl_debug_log, "PVIV%s\n", s);
4736 PerlIO_printf(Perl_debug_log, "PVNV%s\n", s);
4739 PerlIO_printf(Perl_debug_log, "PVBM%s\n", s);
4742 PerlIO_printf(Perl_debug_log, "PVMG%s\n", s);
4745 PerlIO_printf(Perl_debug_log, "PVLV%s\n", s);
4748 PerlIO_printf(Perl_debug_log, "PVAV%s\n", s);
4751 PerlIO_printf(Perl_debug_log, "PVHV%s\n", s);
4754 PerlIO_printf(Perl_debug_log, "PVCV%s\n", s);
4757 PerlIO_printf(Perl_debug_log, "PVGV%s\n", s);
4760 PerlIO_printf(Perl_debug_log, "PVFM%s\n", s);
4763 PerlIO_printf(Perl_debug_log, "PVIO%s\n", s);
4766 PerlIO_printf(Perl_debug_log, "UNKNOWN%s\n", s);
4769 if (type >= SVt_PVIV || type == SVt_IV)
4770 PerlIO_printf(Perl_debug_log, " IV = %ld\n", (long)SvIVX(sv));
4771 if (type >= SVt_PVNV || type == SVt_NV) {
4772 SET_NUMERIC_STANDARD();
4773 PerlIO_printf(Perl_debug_log, " NV = %.*g\n", DBL_DIG, SvNVX(sv));
4776 PerlIO_printf(Perl_debug_log, " RV = 0x%lx\n", (long)SvRV(sv));
4782 if (type <= SVt_PVLV) {
4784 PerlIO_printf(Perl_debug_log, " PV = 0x%lx \"%s\"\n CUR = %ld\n LEN = %ld\n",
4785 (long)SvPVX(sv), SvPVX(sv), (long)SvCUR(sv), (long)SvLEN(sv));
4787 PerlIO_printf(Perl_debug_log, " PV = 0\n");
4789 if (type >= SVt_PVMG) {
4791 PerlIO_printf(Perl_debug_log, " MAGIC = 0x%lx\n", (long)SvMAGIC(sv));
4794 PerlIO_printf(Perl_debug_log, " STASH = \"%s\"\n", HvNAME(SvSTASH(sv)));
4798 PerlIO_printf(Perl_debug_log, " TYPE = %c\n", LvTYPE(sv));
4799 PerlIO_printf(Perl_debug_log, " TARGOFF = %ld\n", (long)LvTARGOFF(sv));
4800 PerlIO_printf(Perl_debug_log, " TARGLEN = %ld\n", (long)LvTARGLEN(sv));
4801 PerlIO_printf(Perl_debug_log, " TARG = 0x%lx\n", (long)LvTARG(sv));
4802 sv_dump(LvTARG(sv));
4805 PerlIO_printf(Perl_debug_log, " ARRAY = 0x%lx\n", (long)AvARRAY(sv));
4806 PerlIO_printf(Perl_debug_log, " ALLOC = 0x%lx\n", (long)AvALLOC(sv));
4807 PerlIO_printf(Perl_debug_log, " FILL = %ld\n", (long)AvFILLp(sv));
4808 PerlIO_printf(Perl_debug_log, " MAX = %ld\n", (long)AvMAX(sv));
4809 PerlIO_printf(Perl_debug_log, " ARYLEN = 0x%lx\n", (long)AvARYLEN(sv));
4810 flags = AvFLAGS(sv);
4812 if (flags & AVf_REAL) sv_catpv(d, ",REAL");
4813 if (flags & AVf_REIFY) sv_catpv(d, ",REIFY");
4814 if (flags & AVf_REUSED) sv_catpv(d, ",REUSED");
4815 PerlIO_printf(Perl_debug_log, " FLAGS = (%s)\n",
4816 SvCUR(d) ? SvPVX(d) + 1 : "");
4819 PerlIO_printf(Perl_debug_log, " ARRAY = 0x%lx\n",(long)HvARRAY(sv));
4820 PerlIO_printf(Perl_debug_log, " KEYS = %ld\n", (long)HvKEYS(sv));
4821 PerlIO_printf(Perl_debug_log, " FILL = %ld\n", (long)HvFILL(sv));
4822 PerlIO_printf(Perl_debug_log, " MAX = %ld\n", (long)HvMAX(sv));
4823 PerlIO_printf(Perl_debug_log, " RITER = %ld\n", (long)HvRITER(sv));
4824 PerlIO_printf(Perl_debug_log, " EITER = 0x%lx\n",(long) HvEITER(sv));
4826 PerlIO_printf(Perl_debug_log, " PMROOT = 0x%lx\n",(long)HvPMROOT(sv));
4828 PerlIO_printf(Perl_debug_log, " NAME = \"%s\"\n", HvNAME(sv));
4832 PerlIO_printf(Perl_debug_log, " PROTOTYPE = \"%s\"\n", SvPV(sv,na));
4835 PerlIO_printf(Perl_debug_log, " STASH = 0x%lx\n", (long)CvSTASH(sv));
4836 PerlIO_printf(Perl_debug_log, " START = 0x%lx\n", (long)CvSTART(sv));
4837 PerlIO_printf(Perl_debug_log, " ROOT = 0x%lx\n", (long)CvROOT(sv));
4838 PerlIO_printf(Perl_debug_log, " XSUB = 0x%lx\n", (long)CvXSUB(sv));
4839 PerlIO_printf(Perl_debug_log, " XSUBANY = %ld\n", (long)CvXSUBANY(sv).any_i32);
4840 PerlIO_printf(Perl_debug_log, " GV = 0x%lx", (long)CvGV(sv));
4841 if (CvGV(sv) && GvNAME(CvGV(sv))) {
4842 PerlIO_printf(Perl_debug_log, " \"%s\"\n", GvNAME(CvGV(sv)));
4844 PerlIO_printf(Perl_debug_log, "\n");
4846 PerlIO_printf(Perl_debug_log, " FILEGV = 0x%lx\n", (long)CvFILEGV(sv));
4847 PerlIO_printf(Perl_debug_log, " DEPTH = %ld\n", (long)CvDEPTH(sv));
4848 PerlIO_printf(Perl_debug_log, " PADLIST = 0x%lx\n", (long)CvPADLIST(sv));
4849 PerlIO_printf(Perl_debug_log, " OUTSIDE = 0x%lx\n", (long)CvOUTSIDE(sv));
4851 PerlIO_printf(Perl_debug_log, " MUTEXP = 0x%lx\n", (long)CvMUTEXP(sv));
4852 PerlIO_printf(Perl_debug_log, " OWNER = 0x%lx\n", (long)CvOWNER(sv));
4853 #endif /* USE_THREADS */
4854 PerlIO_printf(Perl_debug_log, " FLAGS = 0x%lx\n",
4855 (unsigned long)CvFLAGS(sv));
4856 if (type == SVt_PVFM)
4857 PerlIO_printf(Perl_debug_log, " LINES = %ld\n", (long)FmLINES(sv));
4860 PerlIO_printf(Perl_debug_log, " NAME = \"%s\"\n", GvNAME(sv));
4861 PerlIO_printf(Perl_debug_log, " NAMELEN = %ld\n", (long)GvNAMELEN(sv));
4862 PerlIO_printf(Perl_debug_log, " STASH = \"%s\"\n", HvNAME(GvSTASH(sv)));
4863 PerlIO_printf(Perl_debug_log, " GP = 0x%lx\n", (long)GvGP(sv));
4864 PerlIO_printf(Perl_debug_log, " SV = 0x%lx\n", (long)GvSV(sv));
4865 PerlIO_printf(Perl_debug_log, " REFCNT = %ld\n", (long)GvREFCNT(sv));
4866 PerlIO_printf(Perl_debug_log, " IO = 0x%lx\n", (long)GvIOp(sv));
4867 PerlIO_printf(Perl_debug_log, " FORM = 0x%lx\n", (long)GvFORM(sv));
4868 PerlIO_printf(Perl_debug_log, " AV = 0x%lx\n", (long)GvAV(sv));
4869 PerlIO_printf(Perl_debug_log, " HV = 0x%lx\n", (long)GvHV(sv));
4870 PerlIO_printf(Perl_debug_log, " CV = 0x%lx\n", (long)GvCV(sv));
4871 PerlIO_printf(Perl_debug_log, " CVGEN = 0x%lx\n", (long)GvCVGEN(sv));
4872 PerlIO_printf(Perl_debug_log, " LASTEXPR = %ld\n", (long)GvLASTEXPR(sv));
4873 PerlIO_printf(Perl_debug_log, " LINE = %ld\n", (long)GvLINE(sv));
4874 PerlIO_printf(Perl_debug_log, " FILEGV = 0x%lx\n", (long)GvFILEGV(sv));
4875 PerlIO_printf(Perl_debug_log, " EGV = 0x%lx\n", (long)GvEGV(sv));
4878 PerlIO_printf(Perl_debug_log, " IFP = 0x%lx\n", (long)IoIFP(sv));
4879 PerlIO_printf(Perl_debug_log, " OFP = 0x%lx\n", (long)IoOFP(sv));
4880 PerlIO_printf(Perl_debug_log, " DIRP = 0x%lx\n", (long)IoDIRP(sv));
4881 PerlIO_printf(Perl_debug_log, " LINES = %ld\n", (long)IoLINES(sv));
4882 PerlIO_printf(Perl_debug_log, " PAGE = %ld\n", (long)IoPAGE(sv));
4883 PerlIO_printf(Perl_debug_log, " PAGE_LEN = %ld\n", (long)IoPAGE_LEN(sv));
4884 PerlIO_printf(Perl_debug_log, " LINES_LEFT = %ld\n", (long)IoLINES_LEFT(sv));
4885 PerlIO_printf(Perl_debug_log, " TOP_NAME = \"%s\"\n", IoTOP_NAME(sv));
4886 PerlIO_printf(Perl_debug_log, " TOP_GV = 0x%lx\n", (long)IoTOP_GV(sv));
4887 PerlIO_printf(Perl_debug_log, " FMT_NAME = \"%s\"\n", IoFMT_NAME(sv));
4888 PerlIO_printf(Perl_debug_log, " FMT_GV = 0x%lx\n", (long)IoFMT_GV(sv));
4889 PerlIO_printf(Perl_debug_log, " BOTTOM_NAME = \"%s\"\n", IoBOTTOM_NAME(sv));
4890 PerlIO_printf(Perl_debug_log, " BOTTOM_GV = 0x%lx\n", (long)IoBOTTOM_GV(sv));
4891 PerlIO_printf(Perl_debug_log, " SUBPROCESS = %ld\n", (long)IoSUBPROCESS(sv));
4892 PerlIO_printf(Perl_debug_log, " TYPE = %c\n", IoTYPE(sv));
4893 PerlIO_printf(Perl_debug_log, " FLAGS = 0x%lx\n", (long)IoFLAGS(sv));