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));
63 static void *my_safemalloc(MEM_SIZE size);
66 typedef void (*SVFUNC) _((SV*));
73 (p) = (SV*)safemalloc(sizeof(SV)); \
82 Safefree((char*)(p)); \
89 #define REGHASH(sv,size) ((((U32)(sv)) >> 2) % (size))
91 #define REG_REPLACE(sv,a,b) \
93 void* p = sv->sv_any; \
94 I32 h = REGHASH(sv, regsize); \
96 while (registry[i] != (a)) { \
100 die("SV registry bug"); \
105 #define REG_ADD(sv) REG_REPLACE(sv,Nullsv,sv)
106 #define REG_REMOVE(sv) REG_REPLACE(sv,sv,Nullsv)
112 if (sv_count >= (regsize >> 1))
114 SV **oldreg = registry;
115 I32 oldsize = regsize;
117 regsize = regsize ? ((regsize << 2) + 1) : 2037;
118 Newz(707, registry, regsize, SV*);
123 for (i = 0; i < oldsize; ++i) {
124 SV* oldsv = oldreg[i];
150 for (i = 0; i < regsize; ++i) {
151 SV* sv = registry[i];
158 sv_add_arena(ptr, size, flags)
163 if (!(flags & SVf_FAKE))
170 * "A time to plant, and a time to uproot what was planted..."
173 #define plant_SV(p) \
175 SvANY(p) = (void *)sv_root; \
176 SvFLAGS(p) = SVTYPEMASK; \
181 /* sv_mutex must be held while calling uproot_SV() */
182 #define uproot_SV(p) \
185 sv_root = (SV*)SvANY(p); \
189 #define new_SV(p) do { \
200 #define del_SV(p) do { \
217 for (sva = sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
219 svend = &sva[SvREFCNT(sva)];
220 if (p >= sv && p < svend)
224 warn("Attempt to free non-arena SV: 0x%lx", (unsigned long)p);
231 #else /* ! DEBUGGING */
233 #define del_SV(p) plant_SV(p)
235 #endif /* DEBUGGING */
238 sv_add_arena(char *ptr, U32 size, U32 flags)
243 Zero(sva, size, char);
245 /* The first SV in an arena isn't an SV. */
246 SvANY(sva) = (void *) sv_arenaroot; /* ptr to next arena */
247 SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */
248 SvFLAGS(sva) = flags; /* FAKE if not to be freed */
253 svend = &sva[SvREFCNT(sva) - 1];
256 SvANY(sv) = (void *)(SV*)(sv + 1);
257 SvFLAGS(sv) = SVTYPEMASK;
261 SvFLAGS(sv) = SVTYPEMASK;
264 /* sv_mutex must be held while calling more_sv() */
271 sv_add_arena(nice_chunk, nice_chunk_size, 0);
275 char *chunk; /* must use New here to match call to */
276 New(704,chunk,1008,char); /* Safefree() in sv_free_arenas() */
277 sv_add_arena(chunk, 1008, 0);
290 for (sva = sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
291 svend = &sva[SvREFCNT(sva)];
292 for (sv = sva + 1; sv < svend; ++sv) {
293 if (SvTYPE(sv) != SVTYPEMASK)
302 do_report_used(SV *sv)
304 if (SvTYPE(sv) != SVTYPEMASK) {
305 /* XXX Perhaps this ought to go to Perl_debug_log, if DEBUGGING. */
306 PerlIO_printf(PerlIO_stderr(), "****\n");
314 visit(do_report_used);
318 do_clean_objs(SV *sv)
322 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
323 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
329 /* XXX Might want to check arrays, etc. */
332 #ifndef DISABLE_DESTRUCTOR_KLUDGE
334 do_clean_named_objs(SV *sv)
336 if (SvTYPE(sv) == SVt_PVGV && GvSV(sv))
337 do_clean_objs(GvSV(sv));
341 static bool in_clean_objs = FALSE;
346 in_clean_objs = TRUE;
347 #ifndef DISABLE_DESTRUCTOR_KLUDGE
348 visit(do_clean_named_objs);
350 visit(do_clean_objs);
351 in_clean_objs = FALSE;
357 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops:\n "), sv_dump(sv));)
358 SvFLAGS(sv) |= SVf_BREAK;
362 static bool in_clean_all = FALSE;
369 in_clean_all = FALSE;
378 /* Free arenas here, but be careful about fake ones. (We assume
379 contiguity of the fake ones with the corresponding real ones.) */
381 for (sva = sv_arenaroot; sva; sva = svanext) {
382 svanext = (SV*) SvANY(sva);
383 while (svanext && SvFAKE(svanext))
384 svanext = (SV*) SvANY(svanext);
387 Safefree((void *)sva);
401 * See comment in more_xiv() -- RAM.
403 xiv_root = (IV**)*xiv;
404 return (XPVIV*)((char*)xiv - sizeof(XPV));
412 IV** xiv = (IV**)((char*)(p) + sizeof(XPV));
413 *xiv = (IV *)xiv_root;
421 register IV** xivend;
423 New(705, ptr, 1008/sizeof(XPV), XPV);
424 ptr->xpv_pv = (char*)xiv_arenaroot; /* linked list of xiv arenas */
425 xiv_arenaroot = ptr; /* to keep Purify happy */
428 xivend = &xiv[1008 / sizeof(IV *) - 1];
429 xiv += (sizeof(XPV) - 1) / sizeof(IV *) + 1; /* fudge by size of XPV */
431 while (xiv < xivend) {
432 *xiv = (IV *)(xiv + 1);
445 xnv_root = *(double**)xnv;
446 return (XPVNV*)((char*)xnv - sizeof(XPVIV));
454 double* xnv = (double*)((char*)(p) + sizeof(XPVIV));
455 *(double**)xnv = xnv_root;
462 register double* xnv;
463 register double* xnvend;
464 New(711, xnv, 1008/sizeof(double), double);
465 xnvend = &xnv[1008 / sizeof(double) - 1];
466 xnv += (sizeof(XPVIV) - 1) / sizeof(double) + 1; /* fudge by sizeof XPVIV */
468 while (xnv < xnvend) {
469 *(double**)xnv = (double*)(xnv + 1);
482 xrv_root = (XRV*)xrv->xrv_rv;
491 p->xrv_rv = (SV*)xrv_root;
499 register XRV* xrvend;
500 New(712, xrv_root, 1008/sizeof(XRV), XRV);
502 xrvend = &xrv[1008 / sizeof(XRV) - 1];
503 while (xrv < xrvend) {
504 xrv->xrv_rv = (SV*)(xrv + 1);
517 xpv_root = (XPV*)xpv->xpv_pv;
526 p->xpv_pv = (char*)xpv_root;
534 register XPV* xpvend;
535 New(713, xpv_root, 1008/sizeof(XPV), XPV);
537 xpvend = &xpv[1008 / sizeof(XPV) - 1];
538 while (xpv < xpvend) {
539 xpv->xpv_pv = (char*)(xpv + 1);
547 #define new_XIV() (void*)safemalloc(sizeof(XPVIV))
548 #define del_XIV(p) Safefree((char*)p)
550 #define new_XIV() (void*)new_xiv()
551 #define del_XIV(p) del_xiv((XPVIV*) p)
555 #define new_XNV() (void*)safemalloc(sizeof(XPVNV))
556 #define del_XNV(p) Safefree((char*)p)
558 #define new_XNV() (void*)new_xnv()
559 #define del_XNV(p) del_xnv((XPVNV*) p)
563 #define new_XRV() (void*)safemalloc(sizeof(XRV))
564 #define del_XRV(p) Safefree((char*)p)
566 #define new_XRV() (void*)new_xrv()
567 #define del_XRV(p) del_xrv((XRV*) p)
571 #define new_XPV() (void*)safemalloc(sizeof(XPV))
572 #define del_XPV(p) Safefree((char*)p)
574 #define new_XPV() (void*)new_xpv()
575 #define del_XPV(p) del_xpv((XPV *)p)
579 # define my_safemalloc(s) safemalloc(s)
580 # define my_safefree(s) free(s)
583 my_safemalloc(MEM_SIZE size)
586 New(717, p, size, char);
589 # define my_safefree(s) Safefree(s)
592 #define new_XPVIV() (void*)my_safemalloc(sizeof(XPVIV))
593 #define del_XPVIV(p) my_safefree((char*)p)
595 #define new_XPVNV() (void*)my_safemalloc(sizeof(XPVNV))
596 #define del_XPVNV(p) my_safefree((char*)p)
598 #define new_XPVMG() (void*)my_safemalloc(sizeof(XPVMG))
599 #define del_XPVMG(p) my_safefree((char*)p)
601 #define new_XPVLV() (void*)my_safemalloc(sizeof(XPVLV))
602 #define del_XPVLV(p) my_safefree((char*)p)
604 #define new_XPVAV() (void*)my_safemalloc(sizeof(XPVAV))
605 #define del_XPVAV(p) my_safefree((char*)p)
607 #define new_XPVHV() (void*)my_safemalloc(sizeof(XPVHV))
608 #define del_XPVHV(p) my_safefree((char*)p)
610 #define new_XPVCV() (void*)my_safemalloc(sizeof(XPVCV))
611 #define del_XPVCV(p) my_safefree((char*)p)
613 #define new_XPVGV() (void*)my_safemalloc(sizeof(XPVGV))
614 #define del_XPVGV(p) my_safefree((char*)p)
616 #define new_XPVBM() (void*)my_safemalloc(sizeof(XPVBM))
617 #define del_XPVBM(p) my_safefree((char*)p)
619 #define new_XPVFM() (void*)my_safemalloc(sizeof(XPVFM))
620 #define del_XPVFM(p) my_safefree((char*)p)
622 #define new_XPVIO() (void*)my_safemalloc(sizeof(XPVIO))
623 #define del_XPVIO(p) my_safefree((char*)p)
626 sv_upgrade(register SV *sv, U32 mt)
636 if (SvTYPE(sv) == mt)
642 switch (SvTYPE(sv)) {
657 nv = (double)SvIVX(sv);
663 else if (mt < SVt_PVIV)
680 pv = (char*)SvRV(sv);
684 nv = (double)(unsigned long)pv;
700 else if (mt == SVt_NV)
711 del_XPVIV(SvANY(sv));
721 del_XPVNV(SvANY(sv));
731 del_XPVMG(SvANY(sv));
734 croak("Can't upgrade that kind of scalar");
739 croak("Can't upgrade to undef");
741 SvANY(sv) = new_XIV();
745 SvANY(sv) = new_XNV();
749 SvANY(sv) = new_XRV();
753 SvANY(sv) = new_XPV();
759 SvANY(sv) = new_XPVIV();
769 SvANY(sv) = new_XPVNV();
777 SvANY(sv) = new_XPVMG();
787 SvANY(sv) = new_XPVLV();
801 SvANY(sv) = new_XPVAV();
816 SvANY(sv) = new_XPVHV();
832 SvANY(sv) = new_XPVCV();
833 Zero(SvANY(sv), 1, XPVCV);
843 SvANY(sv) = new_XPVGV();
858 SvANY(sv) = new_XPVBM();
871 SvANY(sv) = new_XPVFM();
872 Zero(SvANY(sv), 1, XPVFM);
882 SvANY(sv) = new_XPVIO();
883 Zero(SvANY(sv), 1, XPVIO);
894 SvFLAGS(sv) &= ~SVTYPEMASK;
903 SV *t = sv_newmortal();
913 else if (sv == (SV*)0x55555555 || SvTYPE(sv) == 'U') {
917 else if (sv == &sv_undef || sv == &sv_no || sv == &sv_yes) {
918 if (sv == &sv_undef) {
919 sv_catpv(t, "SV_UNDEF");
920 if (!(SvFLAGS(sv) & (SVf_OK|SVf_OOK|SVs_OBJECT|
921 SVs_GMG|SVs_SMG|SVs_RMG)) &&
925 else if (sv == &sv_no) {
926 sv_catpv(t, "SV_NO");
927 if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
928 SVs_GMG|SVs_SMG|SVs_RMG)) &&
929 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
936 sv_catpv(t, "SV_YES");
937 if (!(SvFLAGS(sv) & (SVf_ROK|SVf_OOK|SVs_OBJECT|
938 SVs_GMG|SVs_SMG|SVs_RMG)) &&
939 !(~SvFLAGS(sv) & (SVf_POK|SVf_NOK|SVf_READONLY|
942 SvPVX(sv) && *SvPVX(sv) == '1' &&
948 else if (SvREFCNT(sv) == 0) {
954 if (SvCUR(t) + unref > 10) {
955 SvCUR(t) = unref + 3;
963 switch (SvTYPE(sv)) {
965 sv_catpv(t, "FREED");
969 sv_catpv(t, "UNDEF");
1003 sv_catpvf(t, "CV(%s)", GvNAME(CvGV(sv)));
1005 sv_catpv(t, "CV()");
1023 sv_catpv(t, "(null)");
1025 sv_catpvf(t, "(%ld+\"%.127s\")",(long)SvIVX(sv),SvPVX(sv));
1027 sv_catpvf(t, "(\"%.127s\")",SvPVX(sv));
1029 else if (SvNOKp(sv)) {
1030 SET_NUMERIC_STANDARD();
1031 sv_catpvf(t, "(%g)",SvNVX(sv));
1033 else if (SvIOKp(sv))
1034 sv_catpvf(t, "(%ld)",(long)SvIVX(sv));
1048 sv_backoff(register SV *sv)
1052 char *s = SvPVX(sv);
1053 SvLEN(sv) += SvIVX(sv);
1054 SvPVX(sv) -= SvIVX(sv);
1056 Move(s, SvPVX(sv), SvCUR(sv)+1, char);
1058 SvFLAGS(sv) &= ~SVf_OOK;
1064 sv_grow(register SV *sv, register I32 newlen)
1066 sv_grow(SV* sv, unsigned long newlen)
1071 #ifdef HAS_64K_LIMIT
1072 if (newlen >= 0x10000) {
1073 PerlIO_printf(Perl_debug_log, "Allocation too large: %lx\n", newlen);
1076 #endif /* HAS_64K_LIMIT */
1079 if (SvTYPE(sv) < SVt_PV) {
1080 sv_upgrade(sv, SVt_PV);
1083 else if (SvOOK(sv)) { /* pv is offset? */
1086 if (newlen > SvLEN(sv))
1087 newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */
1091 if (newlen > SvLEN(sv)) { /* need more room? */
1093 Renew(s,newlen,char);
1095 New(703,s,newlen,char);
1097 SvLEN_set(sv, newlen);
1103 sv_setiv(register SV *sv, IV i)
1105 sv_check_thinkfirst(sv);
1106 switch (SvTYPE(sv)) {
1108 sv_upgrade(sv, SVt_IV);
1111 sv_upgrade(sv, SVt_PVNV);
1115 sv_upgrade(sv, SVt_PVIV);
1131 croak("Can't coerce %s to integer in %s", sv_reftype(sv,0),
1132 op_desc[op->op_type]);
1135 (void)SvIOK_only(sv); /* validate number */
1141 sv_setuv(register SV *sv, UV u)
1146 sv_setnv(sv, (double)u);
1150 sv_setnv(register SV *sv, double num)
1152 sv_check_thinkfirst(sv);
1153 switch (SvTYPE(sv)) {
1156 sv_upgrade(sv, SVt_NV);
1162 sv_upgrade(sv, SVt_PVNV);
1169 (void)SvOOK_off(sv);
1184 croak("Can't coerce %s to number in %s", sv_reftype(sv,0),
1185 op_name[op->op_type]);
1189 (void)SvNOK_only(sv); /* validate number */
1194 not_a_number(SV *sv)
1200 char *limit = tmpbuf + sizeof(tmpbuf) - 8;
1201 /* each *s can expand to 4 chars + "...\0",
1202 i.e. need room for 8 chars */
1204 for (s = SvPVX(sv); *s && d < limit; s++) {
1206 if (ch & 128 && !isPRINT_LC(ch)) {
1215 else if (ch == '\r') {
1219 else if (ch == '\f') {
1223 else if (ch == '\\') {
1227 else if (isPRINT_LC(ch))
1242 warn("Argument \"%s\" isn't numeric in %s", tmpbuf,
1243 op_name[op->op_type]);
1245 warn("Argument \"%s\" isn't numeric", tmpbuf);
1249 sv_2iv(register SV *sv)
1253 if (SvGMAGICAL(sv)) {
1258 if (SvNVX(sv) < 0.0)
1259 return I_V(SvNVX(sv));
1261 return (IV) U_V(SvNVX(sv));
1263 if (SvPOKp(sv) && SvLEN(sv))
1266 if (dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) {
1274 if (SvTHINKFIRST(sv)) {
1278 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
1279 return SvIV(tmpstr);
1280 #endif /* OVERLOAD */
1281 return (IV)SvRV(sv);
1283 if (SvREADONLY(sv)) {
1285 if (SvNVX(sv) < 0.0)
1286 return I_V(SvNVX(sv));
1288 return (IV) U_V(SvNVX(sv));
1290 if (SvPOKp(sv) && SvLEN(sv))
1297 switch (SvTYPE(sv)) {
1299 sv_upgrade(sv, SVt_IV);
1302 sv_upgrade(sv, SVt_PVIV);
1305 sv_upgrade(sv, SVt_PVNV);
1310 if (SvNVX(sv) < 0.0)
1311 SvIVX(sv) = I_V(SvNVX(sv));
1313 SvUVX(sv) = U_V(SvNVX(sv));
1315 else if (SvPOKp(sv) && SvLEN(sv)) {
1317 SvIVX(sv) = asIV(sv);
1321 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1325 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2iv(%ld)\n",
1326 (unsigned long)sv,(long)SvIVX(sv)));
1331 sv_2uv(register SV *sv)
1335 if (SvGMAGICAL(sv)) {
1340 return U_V(SvNVX(sv));
1341 if (SvPOKp(sv) && SvLEN(sv))
1344 if (dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) {
1352 if (SvTHINKFIRST(sv)) {
1356 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv, numer)))
1357 return SvUV(tmpstr);
1358 #endif /* OVERLOAD */
1359 return (UV)SvRV(sv);
1361 if (SvREADONLY(sv)) {
1363 return U_V(SvNVX(sv));
1365 if (SvPOKp(sv) && SvLEN(sv))
1372 switch (SvTYPE(sv)) {
1374 sv_upgrade(sv, SVt_IV);
1377 sv_upgrade(sv, SVt_PVIV);
1380 sv_upgrade(sv, SVt_PVNV);
1385 SvUVX(sv) = U_V(SvNVX(sv));
1387 else if (SvPOKp(sv) && SvLEN(sv)) {
1389 SvUVX(sv) = asUV(sv);
1392 if (dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) {
1399 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2uv(%lu)\n",
1400 (unsigned long)sv,SvUVX(sv)));
1405 sv_2nv(register SV *sv)
1409 if (SvGMAGICAL(sv)) {
1413 if (SvPOKp(sv) && SvLEN(sv)) {
1414 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1416 SET_NUMERIC_STANDARD();
1417 return atof(SvPVX(sv));
1420 return (double)SvIVX(sv);
1422 if (dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) {
1430 if (SvTHINKFIRST(sv)) {
1434 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)))
1435 return SvNV(tmpstr);
1436 #endif /* OVERLOAD */
1437 return (double)(unsigned long)SvRV(sv);
1439 if (SvREADONLY(sv)) {
1440 if (SvPOKp(sv) && SvLEN(sv)) {
1441 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1443 SET_NUMERIC_STANDARD();
1444 return atof(SvPVX(sv));
1447 return (double)SvIVX(sv);
1453 if (SvTYPE(sv) < SVt_NV) {
1454 if (SvTYPE(sv) == SVt_IV)
1455 sv_upgrade(sv, SVt_PVNV);
1457 sv_upgrade(sv, SVt_NV);
1458 DEBUG_c(SET_NUMERIC_STANDARD());
1459 DEBUG_c(PerlIO_printf(Perl_debug_log,
1460 "0x%lx num(%g)\n",(unsigned long)sv,SvNVX(sv)));
1462 else if (SvTYPE(sv) < SVt_PVNV)
1463 sv_upgrade(sv, SVt_PVNV);
1465 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
1467 SvNVX(sv) = (double)SvIVX(sv);
1469 else if (SvPOKp(sv) && SvLEN(sv)) {
1470 if (dowarn && !SvIOKp(sv) && !looks_like_number(sv))
1472 SET_NUMERIC_STANDARD();
1473 SvNVX(sv) = atof(SvPVX(sv));
1477 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1482 DEBUG_c(SET_NUMERIC_STANDARD());
1483 DEBUG_c(PerlIO_printf(Perl_debug_log,
1484 "0x%lx 2nv(%g)\n",(unsigned long)sv,SvNVX(sv)));
1491 I32 numtype = looks_like_number(sv);
1495 return atol(SvPVX(sv));
1496 if (!numtype && dowarn)
1498 SET_NUMERIC_STANDARD();
1499 d = atof(SvPVX(sv));
1509 I32 numtype = looks_like_number(sv);
1513 return strtoul(SvPVX(sv), Null(char**), 10);
1515 if (!numtype && dowarn)
1517 SET_NUMERIC_STANDARD();
1518 return U_V(atof(SvPVX(sv)));
1522 looks_like_number(SV *sv)
1525 register char *send;
1526 register char *sbegin;
1534 else if (SvPOKp(sv))
1535 sbegin = SvPV(sv, len);
1538 send = sbegin + len;
1543 if (*s == '+' || *s == '-')
1546 /* next must be digit or '.' */
1550 } while (isDIGIT(*s));
1553 while (isDIGIT(*s)) /* optional digits after "." */
1557 else if (*s == '.') {
1559 /* no digits before '.' means we need digits after it */
1563 } while (isDIGIT(*s));
1572 * we return 1 if the number can be converted to _integer_ with atol()
1573 * and 2 if you need (int)atof().
1577 /* we can have an optional exponent part */
1578 if (*s == 'e' || *s == 'E') {
1581 if (*s == '+' || *s == '-')
1586 } while (isDIGIT(*s));
1595 if (len == 10 && memEQ(sbegin, "0 but true", 10))
1601 sv_2pv(register SV *sv, STRLEN *lp)
1606 char tmpbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
1612 if (SvGMAGICAL(sv)) {
1619 (void)sprintf(tmpbuf,"%ld",(long)SvIVX(sv));
1624 SET_NUMERIC_STANDARD();
1625 Gconvert(SvNVX(sv), DBL_DIG, 0, tmpbuf);
1630 if (dowarn && !(SvFLAGS(sv) & SVs_PADTMP)) {
1639 if (SvTHINKFIRST(sv)) {
1643 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)))
1644 return SvPV(tmpstr,*lp);
1645 #endif /* OVERLOAD */
1650 switch (SvTYPE(sv)) {
1659 case SVt_PVMG: s = "SCALAR"; break;
1660 case SVt_PVLV: s = "LVALUE"; break;
1661 case SVt_PVAV: s = "ARRAY"; break;
1662 case SVt_PVHV: s = "HASH"; break;
1663 case SVt_PVCV: s = "CODE"; break;
1664 case SVt_PVGV: s = "GLOB"; break;
1665 case SVt_PVFM: s = "FORMLINE"; break;
1666 case SVt_PVIO: s = "IO"; break;
1667 default: s = "UNKNOWN"; break;
1671 sv_setpvf(tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
1674 sv_catpvf(tsv, "(0x%lx)", (unsigned long)sv);
1680 if (SvREADONLY(sv)) {
1682 SET_NUMERIC_STANDARD();
1683 Gconvert(SvNVX(sv), DBL_DIG, 0, tmpbuf);
1688 (void)sprintf(tmpbuf,"%ld",(long)SvIVX(sv));
1698 if (!SvUPGRADE(sv, SVt_PV))
1701 if (SvTYPE(sv) < SVt_PVNV)
1702 sv_upgrade(sv, SVt_PVNV);
1705 olderrno = errno; /* some Xenix systems wipe out errno here */
1707 if (SvNVX(sv) == 0.0)
1708 (void)strcpy(s,"0");
1712 SET_NUMERIC_STANDARD();
1713 Gconvert(SvNVX(sv), DBL_DIG, 0, s);
1716 #ifdef FIXNEGATIVEZERO
1717 if (*s == '-' && s[1] == '0' && !s[2])
1726 else if (SvIOKp(sv)) {
1727 U32 oldIOK = SvIOK(sv);
1728 if (SvTYPE(sv) < SVt_PVIV)
1729 sv_upgrade(sv, SVt_PVIV);
1730 olderrno = errno; /* some Xenix systems wipe out errno here */
1731 sv_setpviv(sv, SvIVX(sv));
1741 if (dowarn && !localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1746 *lp = s - SvPVX(sv);
1749 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2pv(%s)\n",(unsigned long)sv,SvPVX(sv)));
1753 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
1754 /* Sneaky stuff here */
1758 tsv = newSVpv(tmpbuf, 0);
1774 len = strlen(tmpbuf);
1776 #ifdef FIXNEGATIVEZERO
1777 if (len == 2 && t[0] == '-' && t[1] == '0') {
1782 (void)SvUPGRADE(sv, SVt_PV);
1784 s = SvGROW(sv, len + 1);
1792 /* This function is only called on magical items */
1794 sv_2bool(register SV *sv)
1806 if (SvAMAGIC(sv) && (tmpsv = AMG_CALLun(sv,bool_)))
1807 return SvTRUE(tmpsv);
1809 #endif /* OVERLOAD */
1810 return SvRV(sv) != 0;
1813 register XPV* Xpvtmp;
1814 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
1815 (*Xpvtmp->xpv_pv > '0' ||
1816 Xpvtmp->xpv_cur > 1 ||
1817 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
1824 return SvIVX(sv) != 0;
1827 return SvNVX(sv) != 0.0;
1834 /* Note: sv_setsv() should not be called with a source string that needs
1835 * to be reused, since it may destroy the source string if it is marked
1840 sv_setsv(SV *dstr, register SV *sstr)
1843 register U32 sflags;
1849 sv_check_thinkfirst(dstr);
1852 stype = SvTYPE(sstr);
1853 dtype = SvTYPE(dstr);
1855 if (dtype == SVt_PVGV && (SvFLAGS(dstr) & SVf_FAKE)) {
1856 sv_unglob(dstr); /* so fake GLOB won't perpetuate */
1857 sv_setpvn(dstr, "", 0);
1858 (void)SvPOK_only(dstr);
1859 dtype = SvTYPE(dstr);
1864 #endif /* OVERLOAD */
1865 /* There's a lot of redundancy below but we're going for speed here */
1869 (void)SvOK_off(dstr);
1872 if (dtype != SVt_IV && dtype < SVt_PVIV) {
1874 sv_upgrade(dstr, SVt_IV);
1875 else if (dtype == SVt_NV)
1876 sv_upgrade(dstr, SVt_PVNV);
1878 sv_upgrade(dstr, SVt_PVIV);
1882 if (dtype != SVt_NV && dtype < SVt_PVNV) {
1884 sv_upgrade(dstr, SVt_NV);
1886 sv_upgrade(dstr, SVt_PVNV);
1891 sv_upgrade(dstr, SVt_RV);
1892 else if (dtype == SVt_PVGV &&
1893 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
1896 if (curcop->cop_stash != GvSTASH(dstr))
1897 GvIMPORTED_on(dstr);
1907 sv_upgrade(dstr, SVt_PV);
1910 if (dtype < SVt_PVIV)
1911 sv_upgrade(dstr, SVt_PVIV);
1914 if (dtype < SVt_PVNV)
1915 sv_upgrade(dstr, SVt_PVNV);
1923 croak("Bizarre copy of %s in %s", sv_reftype(sstr, 0),
1924 op_name[op->op_type]);
1926 croak("Bizarre copy of %s", sv_reftype(sstr, 0));
1930 if (dtype <= SVt_PVGV) {
1932 if (dtype != SVt_PVGV) {
1933 char *name = GvNAME(sstr);
1934 STRLEN len = GvNAMELEN(sstr);
1935 sv_upgrade(dstr, SVt_PVGV);
1936 sv_magic(dstr, dstr, '*', name, len);
1937 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
1938 GvNAME(dstr) = savepvn(name, len);
1939 GvNAMELEN(dstr) = len;
1940 SvFAKE_on(dstr); /* can coerce to non-glob */
1942 /* ahem, death to those who redefine active sort subs */
1943 else if (curstack == sortstack
1944 && GvCV(dstr) && sortcop == CvSTART(GvCV(dstr)))
1945 croak("Can't redefine active sort subroutine %s",
1947 (void)SvOK_off(dstr);
1948 GvINTRO_off(dstr); /* one-shot flag */
1950 GvGP(dstr) = gp_ref(GvGP(sstr));
1952 if (curcop->cop_stash != GvSTASH(dstr))
1953 GvIMPORTED_on(dstr);
1960 if (SvGMAGICAL(sstr)) {
1962 if (SvTYPE(sstr) != stype) {
1963 stype = SvTYPE(sstr);
1964 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
1969 sv_upgrade(dstr, stype);
1972 sflags = SvFLAGS(sstr);
1974 if (sflags & SVf_ROK) {
1975 if (dtype >= SVt_PV) {
1976 if (dtype == SVt_PVGV) {
1978 SV *sref = SvREFCNT_inc(SvRV(sstr));
1980 int intro = GvINTRO(dstr);
1984 GvGP(dstr)->gp_refcnt--;
1985 GvINTRO_off(dstr); /* one-shot flag */
1986 Newz(602,gp, 1, GP);
1987 GvGP(dstr) = gp_ref(gp);
1988 GvSV(dstr) = NEWSV(72,0);
1989 GvLINE(dstr) = curcop->cop_line;
1990 GvEGV(dstr) = (GV*)dstr;
1993 switch (SvTYPE(sref)) {
1996 SAVESPTR(GvAV(dstr));
1998 dref = (SV*)GvAV(dstr);
1999 GvAV(dstr) = (AV*)sref;
2000 if (curcop->cop_stash != GvSTASH(dstr))
2001 GvIMPORTED_AV_on(dstr);
2005 SAVESPTR(GvHV(dstr));
2007 dref = (SV*)GvHV(dstr);
2008 GvHV(dstr) = (HV*)sref;
2009 if (curcop->cop_stash != GvSTASH(dstr))
2010 GvIMPORTED_HV_on(dstr);
2014 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2015 SvREFCNT_dec(GvCV(dstr));
2016 GvCV(dstr) = Nullcv;
2017 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2020 SAVESPTR(GvCV(dstr));
2023 dref = (SV*)GvCV(dstr);
2024 if (GvCV(dstr) != (CV*)sref) {
2025 CV* cv = GvCV(dstr);
2027 if (!GvCVGEN((GV*)dstr) &&
2028 (CvROOT(cv) || CvXSUB(cv)))
2030 /* ahem, death to those who redefine
2031 * active sort subs */
2032 if (curstack == sortstack &&
2033 sortcop == CvSTART(cv))
2035 "Can't redefine active sort subroutine %s",
2036 GvENAME((GV*)dstr));
2037 if (cv_const_sv(cv))
2038 warn("Constant subroutine %s redefined",
2039 GvENAME((GV*)dstr));
2041 warn("Subroutine %s redefined",
2042 GvENAME((GV*)dstr));
2044 cv_ckproto(cv, (GV*)dstr,
2045 SvPOK(sref) ? SvPVX(sref) : Nullch);
2047 GvCV(dstr) = (CV*)sref;
2048 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2049 GvASSUMECV_on(dstr);
2052 if (curcop->cop_stash != GvSTASH(dstr))
2053 GvIMPORTED_CV_on(dstr);
2057 SAVESPTR(GvIOp(dstr));
2059 dref = (SV*)GvIOp(dstr);
2060 GvIOp(dstr) = (IO*)sref;
2064 SAVESPTR(GvSV(dstr));
2066 dref = (SV*)GvSV(dstr);
2068 if (curcop->cop_stash != GvSTASH(dstr))
2069 GvIMPORTED_SV_on(dstr);
2080 (void)SvOOK_off(dstr); /* backoff */
2081 Safefree(SvPVX(dstr));
2082 SvLEN(dstr)=SvCUR(dstr)=0;
2085 (void)SvOK_off(dstr);
2086 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
2088 if (sflags & SVp_NOK) {
2090 SvNVX(dstr) = SvNVX(sstr);
2092 if (sflags & SVp_IOK) {
2093 (void)SvIOK_on(dstr);
2094 SvIVX(dstr) = SvIVX(sstr);
2097 if (SvAMAGIC(sstr)) {
2100 #endif /* OVERLOAD */
2102 else if (sflags & SVp_POK) {
2105 * Check to see if we can just swipe the string. If so, it's a
2106 * possible small lose on short strings, but a big win on long ones.
2107 * It might even be a win on short strings if SvPVX(dstr)
2108 * has to be allocated and SvPVX(sstr) has to be freed.
2111 if (SvTEMP(sstr) && /* slated for free anyway? */
2112 SvREFCNT(sstr) == 1 && /* and no other references to it? */
2113 !(sflags & SVf_OOK)) /* and not involved in OOK hack? */
2115 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
2117 SvFLAGS(dstr) &= ~SVf_OOK;
2118 Safefree(SvPVX(dstr) - SvIVX(dstr));
2121 Safefree(SvPVX(dstr));
2123 (void)SvPOK_only(dstr);
2124 SvPV_set(dstr, SvPVX(sstr));
2125 SvLEN_set(dstr, SvLEN(sstr));
2126 SvCUR_set(dstr, SvCUR(sstr));
2128 (void)SvOK_off(sstr);
2129 SvPV_set(sstr, Nullch);
2134 else { /* have to copy actual string */
2135 STRLEN len = SvCUR(sstr);
2137 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2138 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2139 SvCUR_set(dstr, len);
2140 *SvEND(dstr) = '\0';
2141 (void)SvPOK_only(dstr);
2144 if (sflags & SVp_NOK) {
2146 SvNVX(dstr) = SvNVX(sstr);
2148 if (sflags & SVp_IOK) {
2149 (void)SvIOK_on(dstr);
2150 SvIVX(dstr) = SvIVX(sstr);
2153 else if (sflags & SVp_NOK) {
2154 SvNVX(dstr) = SvNVX(sstr);
2155 (void)SvNOK_only(dstr);
2157 (void)SvIOK_on(dstr);
2158 SvIVX(dstr) = SvIVX(sstr);
2161 else if (sflags & SVp_IOK) {
2162 (void)SvIOK_only(dstr);
2163 SvIVX(dstr) = SvIVX(sstr);
2166 (void)SvOK_off(dstr);
2172 sv_setpvn(register SV *sv, register const char *ptr, register STRLEN len)
2174 assert(len >= 0); /* STRLEN is probably unsigned, so this may
2175 elicit a warning, but it won't hurt. */
2176 sv_check_thinkfirst(sv);
2181 if (SvTYPE(sv) >= SVt_PV) {
2182 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
2185 else if (!sv_upgrade(sv, SVt_PV))
2187 SvGROW(sv, len + 1);
2188 Move(ptr,SvPVX(sv),len,char);
2191 (void)SvPOK_only(sv); /* validate pointer */
2196 sv_setpv(register SV *sv, register const char *ptr)
2198 register STRLEN len;
2200 sv_check_thinkfirst(sv);
2206 if (SvTYPE(sv) >= SVt_PV) {
2207 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
2210 else if (!sv_upgrade(sv, SVt_PV))
2212 SvGROW(sv, len + 1);
2213 Move(ptr,SvPVX(sv),len+1,char);
2215 (void)SvPOK_only(sv); /* validate pointer */
2220 sv_usepvn(register SV *sv, register char *ptr, register STRLEN len)
2222 sv_check_thinkfirst(sv);
2223 if (!SvUPGRADE(sv, SVt_PV))
2230 Safefree(SvPVX(sv));
2231 Renew(ptr, len+1, char);
2234 SvLEN_set(sv, len+1);
2236 (void)SvPOK_only(sv); /* validate pointer */
2241 sv_check_thinkfirst(register SV *sv)
2243 if (SvTHINKFIRST(sv)) {
2244 if (SvREADONLY(sv)) {
2246 if (curcop != &compiling)
2255 sv_chop(register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
2259 register STRLEN delta;
2261 if (!ptr || !SvPOKp(sv))
2263 sv_check_thinkfirst(sv);
2264 if (SvTYPE(sv) < SVt_PVIV)
2265 sv_upgrade(sv,SVt_PVIV);
2269 SvFLAGS(sv) |= SVf_OOK;
2271 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK);
2272 delta = ptr - SvPVX(sv);
2280 sv_catpvn(register SV *sv, register char *ptr, register STRLEN len)
2285 junk = SvPV_force(sv, tlen);
2286 SvGROW(sv, tlen + len + 1);
2289 Move(ptr,SvPVX(sv)+tlen,len,char);
2292 (void)SvPOK_only(sv); /* validate pointer */
2297 sv_catsv(SV *dstr, register SV *sstr)
2303 if (s = SvPV(sstr, len))
2304 sv_catpvn(dstr,s,len);
2308 sv_catpv(register SV *sv, register char *ptr)
2310 register STRLEN len;
2316 junk = SvPV_force(sv, tlen);
2318 SvGROW(sv, tlen + len + 1);
2321 Move(ptr,SvPVX(sv)+tlen,len+1,char);
2323 (void)SvPOK_only(sv); /* validate pointer */
2329 newSV(I32 x, STRLEN len)
2341 sv_upgrade(sv, SVt_PV);
2342 SvGROW(sv, len + 1);
2347 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
2350 sv_magic(register SV *sv, SV *obj, int how, char *name, I32 namlen)
2354 if (SvREADONLY(sv)) {
2356 if (curcop != &compiling && !strchr("gBf", how))
2359 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
2360 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
2367 if (!SvUPGRADE(sv, SVt_PVMG))
2370 Newz(702,mg, 1, MAGIC);
2371 mg->mg_moremagic = SvMAGIC(sv);
2374 if (!obj || obj == sv || how == '#' || how == 'r')
2378 mg->mg_obj = SvREFCNT_inc(obj);
2379 mg->mg_flags |= MGf_REFCOUNTED;
2382 mg->mg_len = namlen;
2385 mg->mg_ptr = savepvn(name, namlen);
2386 else if (namlen == HEf_SVKEY)
2387 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
2391 mg->mg_virtual = &vtbl_sv;
2395 mg->mg_virtual = &vtbl_amagic;
2398 mg->mg_virtual = &vtbl_amagicelem;
2403 #endif /* OVERLOAD */
2405 mg->mg_virtual = &vtbl_bm;
2408 mg->mg_virtual = &vtbl_env;
2411 mg->mg_virtual = &vtbl_fm;
2414 mg->mg_virtual = &vtbl_envelem;
2417 mg->mg_virtual = &vtbl_mglob;
2420 mg->mg_virtual = &vtbl_isa;
2423 mg->mg_virtual = &vtbl_isaelem;
2426 mg->mg_virtual = &vtbl_nkeys;
2433 mg->mg_virtual = &vtbl_dbline;
2437 mg->mg_virtual = &vtbl_mutex;
2439 #endif /* USE_THREADS */
2440 #ifdef USE_LOCALE_COLLATE
2442 mg->mg_virtual = &vtbl_collxfrm;
2444 #endif /* USE_LOCALE_COLLATE */
2446 mg->mg_virtual = &vtbl_pack;
2450 mg->mg_virtual = &vtbl_packelem;
2453 mg->mg_virtual = &vtbl_regexp;
2456 mg->mg_virtual = &vtbl_sig;
2459 mg->mg_virtual = &vtbl_sigelem;
2462 mg->mg_virtual = &vtbl_taint;
2466 mg->mg_virtual = &vtbl_uvar;
2469 mg->mg_virtual = &vtbl_vec;
2472 mg->mg_virtual = &vtbl_substr;
2475 mg->mg_virtual = &vtbl_defelem;
2478 mg->mg_virtual = &vtbl_glob;
2481 mg->mg_virtual = &vtbl_arylen;
2484 mg->mg_virtual = &vtbl_pos;
2486 case '~': /* Reserved for use by extensions not perl internals. */
2487 /* Useful for attaching extension internal data to perl vars. */
2488 /* Note that multiple extensions may clash if magical scalars */
2489 /* etc holding private data from one are passed to another. */
2493 croak("Don't know how to handle magic of type '%c'", how);
2497 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
2501 sv_unmagic(SV *sv, int type)
2505 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
2508 for (mg = *mgp; mg; mg = *mgp) {
2509 if (mg->mg_type == type) {
2510 MGVTBL* vtbl = mg->mg_virtual;
2511 *mgp = mg->mg_moremagic;
2512 if (vtbl && vtbl->svt_free)
2513 (*vtbl->svt_free)(sv, mg);
2514 if (mg->mg_ptr && mg->mg_type != 'g')
2515 if (mg->mg_len >= 0)
2516 Safefree(mg->mg_ptr);
2517 else if (mg->mg_len == HEf_SVKEY)
2518 SvREFCNT_dec((SV*)mg->mg_ptr);
2519 if (mg->mg_flags & MGf_REFCOUNTED)
2520 SvREFCNT_dec(mg->mg_obj);
2524 mgp = &mg->mg_moremagic;
2528 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
2535 sv_insert(SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
2539 register char *midend;
2540 register char *bigend;
2544 croak("Can't modify non-existent substring");
2545 SvPV_force(bigstr, na);
2547 i = littlelen - len;
2548 if (i > 0) { /* string might grow */
2549 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
2550 mid = big + offset + len;
2551 midend = bigend = big + SvCUR(bigstr);
2554 while (midend > mid) /* shove everything down */
2555 *--bigend = *--midend;
2556 Move(little,big+offset,littlelen,char);
2562 Move(little,SvPVX(bigstr)+offset,len,char);
2567 big = SvPVX(bigstr);
2570 bigend = big + SvCUR(bigstr);
2572 if (midend > bigend)
2573 croak("panic: sv_insert");
2575 if (mid - big > bigend - midend) { /* faster to shorten from end */
2577 Move(little, mid, littlelen,char);
2580 i = bigend - midend;
2582 Move(midend, mid, i,char);
2586 SvCUR_set(bigstr, mid - big);
2589 else if (i = mid - big) { /* faster from front */
2590 midend -= littlelen;
2592 sv_chop(bigstr,midend-i);
2597 Move(little, mid, littlelen,char);
2599 else if (littlelen) {
2600 midend -= littlelen;
2601 sv_chop(bigstr,midend);
2602 Move(little,midend,littlelen,char);
2605 sv_chop(bigstr,midend);
2610 /* make sv point to what nstr did */
2613 sv_replace(register SV *sv, register SV *nsv)
2615 U32 refcnt = SvREFCNT(sv);
2616 sv_check_thinkfirst(sv);
2617 if (SvREFCNT(nsv) != 1)
2618 warn("Reference miscount in sv_replace()");
2619 if (SvMAGICAL(sv)) {
2623 sv_upgrade(nsv, SVt_PVMG);
2624 SvMAGIC(nsv) = SvMAGIC(sv);
2625 SvFLAGS(nsv) |= SvMAGICAL(sv);
2631 assert(!SvREFCNT(sv));
2632 StructCopy(nsv,sv,SV);
2633 SvREFCNT(sv) = refcnt;
2634 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
2639 sv_clear(register SV *sv)
2642 assert(SvREFCNT(sv) == 0);
2646 if (defstash) { /* Still have a symbol table? */
2651 SAVEFREESV(SvSTASH(sv));
2653 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
2658 sv_upgrade(&ref, SVt_RV);
2659 SvRV(&ref) = SvREFCNT_inc(sv);
2661 SvREFCNT(&ref) = 1; /* Fake, but otherwise
2662 creating+destructing a ref
2663 leads to disaster. */
2669 perl_call_sv((SV*)GvCV(destructor),
2670 G_DISCARD|G_EVAL|G_KEEPERR);
2671 del_XRV(SvANY(&ref));
2678 SvREFCNT_dec(SvSTASH(sv));
2680 SvOBJECT_off(sv); /* Curse the object. */
2681 if (SvTYPE(sv) != SVt_PVIO)
2682 --sv_objcount; /* XXX Might want something more general */
2686 croak("DESTROY created new reference to dead object");
2687 /* DESTROY gave object new lease on life */
2691 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
2693 switch (SvTYPE(sv)) {
2695 if (IoIFP(sv) != PerlIO_stdin() &&
2696 IoIFP(sv) != PerlIO_stdout() &&
2697 IoIFP(sv) != PerlIO_stderr())
2699 Safefree(IoTOP_NAME(sv));
2700 Safefree(IoFMT_NAME(sv));
2701 Safefree(IoBOTTOM_NAME(sv));
2717 Safefree(GvNAME(sv));
2718 SvREFCNT_dec(GvSTASH(sv));
2725 (void)SvOOK_off(sv);
2730 SvREFCNT_dec(SvRV(sv));
2731 else if (SvPVX(sv) && SvLEN(sv))
2732 Safefree(SvPVX(sv));
2742 switch (SvTYPE(sv)) {
2758 del_XPVIV(SvANY(sv));
2761 del_XPVNV(SvANY(sv));
2764 del_XPVMG(SvANY(sv));
2767 del_XPVLV(SvANY(sv));
2770 del_XPVAV(SvANY(sv));
2773 del_XPVHV(SvANY(sv));
2776 del_XPVCV(SvANY(sv));
2779 del_XPVGV(SvANY(sv));
2782 del_XPVBM(SvANY(sv));
2785 del_XPVFM(SvANY(sv));
2788 del_XPVIO(SvANY(sv));
2791 SvFLAGS(sv) &= SVf_BREAK;
2792 SvFLAGS(sv) |= SVTYPEMASK;
2808 if (SvREADONLY(sv)) {
2809 if (sv == &sv_undef || sv == &sv_yes || sv == &sv_no)
2812 if (SvREFCNT(sv) == 0) {
2813 if (SvFLAGS(sv) & SVf_BREAK)
2815 if (in_clean_all) /* All is fair */
2817 warn("Attempt to free unreferenced scalar");
2820 if (--SvREFCNT(sv) > 0)
2824 warn("Attempt to free temp prematurely: %s", SvPEEK(sv));
2834 sv_len(register SV *sv)
2845 junk = SvPV(sv, len);
2850 sv_eq(register SV *str1, register SV *str2)
2862 pv1 = SvPV(str1, cur1);
2867 pv2 = SvPV(str2, cur2);
2872 return memEQ(pv1, pv2, cur1);
2876 sv_cmp(register SV *str1, register SV *str2)
2879 char *pv1 = str1 ? SvPV(str1, cur1) : (char *) NULL;
2881 char *pv2 = str2 ? SvPV(str2, cur2) : (char *) NULL;
2885 return cur2 ? -1 : 0;
2890 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
2893 return retval < 0 ? -1 : 1;
2898 return cur1 < cur2 ? -1 : 1;
2902 sv_cmp_locale(register SV *sv1, register SV *sv2)
2904 #ifdef USE_LOCALE_COLLATE
2910 if (collation_standard)
2914 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
2916 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
2918 if (!pv1 || !len1) {
2929 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
2932 return retval < 0 ? -1 : 1;
2935 * When the result of collation is equality, that doesn't mean
2936 * that there are no differences -- some locales exclude some
2937 * characters from consideration. So to avoid false equalities,
2938 * we use the raw string as a tiebreaker.
2944 #endif /* USE_LOCALE_COLLATE */
2946 return sv_cmp(sv1, sv2);
2949 #ifdef USE_LOCALE_COLLATE
2951 * Any scalar variable may carry an 'o' magic that contains the
2952 * scalar data of the variable transformed to such a format that
2953 * a normal memory comparison can be used to compare the data
2954 * according to the locale settings.
2957 sv_collxfrm(SV *sv, STRLEN *nxp)
2961 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
2962 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != collation_ix) {
2967 Safefree(mg->mg_ptr);
2969 if ((xf = mem_collxfrm(s, len, &xlen))) {
2970 if (SvREADONLY(sv)) {
2973 return xf + sizeof(collation_ix);
2976 sv_magic(sv, 0, 'o', 0, 0);
2977 mg = mg_find(sv, 'o');
2990 if (mg && mg->mg_ptr) {
2992 return mg->mg_ptr + sizeof(collation_ix);
3000 #endif /* USE_LOCALE_COLLATE */
3003 sv_gets(register SV *sv, register PerlIO *fp, I32 append)
3008 register STDCHAR rslast;
3009 register STDCHAR *bp;
3013 sv_check_thinkfirst(sv);
3014 if (!SvUPGRADE(sv, SVt_PV))
3022 else if (RsPARA(rs)) {
3027 rsptr = SvPV(rs, rslen);
3028 rslast = rslen ? rsptr[rslen - 1] : '\0';
3030 if (RsPARA(rs)) { /* have to do this both before and after */
3031 do { /* to make sure file boundaries work right */
3034 i = PerlIO_getc(fp);
3038 PerlIO_ungetc(fp,i);
3044 /* See if we know enough about I/O mechanism to cheat it ! */
3046 /* This used to be #ifdef test - it is made run-time test for ease
3047 of abstracting out stdio interface. One call should be cheap
3048 enough here - and may even be a macro allowing compile
3052 if (PerlIO_fast_gets(fp)) {
3055 * We're going to steal some values from the stdio struct
3056 * and put EVERYTHING in the innermost loop into registers.
3058 register STDCHAR *ptr;
3062 #if defined(VMS) && defined(PERLIO_IS_STDIO)
3063 /* An ungetc()d char is handled separately from the regular
3064 * buffer, so we getc() it back out and stuff it in the buffer.
3066 i = PerlIO_getc(fp);
3067 if (i == EOF) return 0;
3068 *(--((*fp)->_ptr)) = (unsigned char) i;
3072 /* Here is some breathtakingly efficient cheating */
3074 cnt = PerlIO_get_cnt(fp); /* get count into register */
3075 (void)SvPOK_only(sv); /* validate pointer */
3076 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
3077 if (cnt > 80 && SvLEN(sv) > append) {
3078 shortbuffered = cnt - SvLEN(sv) + append + 1;
3079 cnt -= shortbuffered;
3083 /* remember that cnt can be negative */
3084 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
3089 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
3090 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
3091 DEBUG_P(PerlIO_printf(Perl_debug_log,
3092 "Screamer: entering, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt));
3093 DEBUG_P(PerlIO_printf(Perl_debug_log,
3094 "Screamer: entering: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n",
3095 (long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp),
3096 (long)(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
3101 while (cnt > 0) { /* this | eat */
3103 if ((*bp++ = *ptr++) == rslast) /* really | dust */
3104 goto thats_all_folks; /* screams | sed :-) */
3108 Copy(ptr, bp, cnt, char); /* this | eat */
3109 bp += cnt; /* screams | dust */
3110 ptr += cnt; /* louder | sed :-) */
3115 if (shortbuffered) { /* oh well, must extend */
3116 cnt = shortbuffered;
3118 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
3120 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
3121 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
3125 DEBUG_P(PerlIO_printf(Perl_debug_log,
3126 "Screamer: going to getc, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt));
3127 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
3128 DEBUG_P(PerlIO_printf(Perl_debug_log,
3129 "Screamer: pre: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n",
3130 (long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp),
3131 (long)(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
3132 /* This used to call 'filbuf' in stdio form, but as that behaves like
3133 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
3134 another abstraction. */
3135 i = PerlIO_getc(fp); /* get more characters */
3136 DEBUG_P(PerlIO_printf(Perl_debug_log,
3137 "Screamer: post: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n",
3138 (long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp),
3139 (long)(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
3140 cnt = PerlIO_get_cnt(fp);
3141 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
3142 DEBUG_P(PerlIO_printf(Perl_debug_log,
3143 "Screamer: after getc, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt));
3145 if (i == EOF) /* all done for ever? */
3146 goto thats_really_all_folks;
3148 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
3150 SvGROW(sv, bpx + cnt + 2);
3151 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
3153 *bp++ = i; /* store character from PerlIO_getc */
3155 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
3156 goto thats_all_folks;
3160 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
3161 memNE((char*)bp - rslen, rsptr, rslen))
3162 goto screamer; /* go back to the fray */
3163 thats_really_all_folks:
3165 cnt += shortbuffered;
3166 DEBUG_P(PerlIO_printf(Perl_debug_log,
3167 "Screamer: quitting, ptr=%ld, cnt=%ld\n",(long)ptr,(long)cnt));
3168 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
3169 DEBUG_P(PerlIO_printf(Perl_debug_log,
3170 "Screamer: end: FILE * thinks ptr=%ld, cnt=%ld, base=%ld\n",
3171 (long)PerlIO_get_ptr(fp), (long)PerlIO_get_cnt(fp),
3172 (long)(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
3174 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
3175 DEBUG_P(PerlIO_printf(Perl_debug_log,
3176 "Screamer: done, len=%ld, string=|%.*s|\n",
3177 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
3181 /*The big, slow, and stupid way */
3186 register STDCHAR *bpe = buf + sizeof(buf);
3188 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
3189 ; /* keep reading */
3193 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
3194 /* Accomodate broken VAXC compiler, which applies U8 cast to
3195 * both args of ?: operator, causing EOF to change into 255
3197 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
3201 sv_catpvn(sv, (char *) buf, cnt);
3203 sv_setpvn(sv, (char *) buf, cnt);
3205 if (i != EOF && /* joy */
3207 SvCUR(sv) < rslen ||
3208 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
3212 * If we're reading from a TTY and we get a short read,
3213 * indicating that the user hit his EOF character, we need
3214 * to notice it now, because if we try to read from the TTY
3215 * again, the EOF condition will disappear.
3217 * The comparison of cnt to sizeof(buf) is an optimization
3218 * that prevents unnecessary calls to feof().
3222 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
3227 if (RsPARA(rs)) { /* have to do this both before and after */
3228 while (i != EOF) { /* to make sure file boundaries work right */
3229 i = PerlIO_getc(fp);
3231 PerlIO_ungetc(fp,i);
3238 win32_strip_return(sv);
3241 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
3246 sv_inc(register SV *sv)
3253 if (SvTHINKFIRST(sv)) {
3254 if (SvREADONLY(sv)) {
3256 if (curcop != &compiling)
3261 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc)) return;
3262 #endif /* OVERLOAD */
3268 flags = SvFLAGS(sv);
3269 if (flags & SVp_NOK) {
3270 (void)SvNOK_only(sv);
3274 if (flags & SVp_IOK) {
3275 if (SvIVX(sv) == IV_MAX)
3276 sv_setnv(sv, (double)IV_MAX + 1.0);
3278 (void)SvIOK_only(sv);
3283 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
3284 if ((flags & SVTYPEMASK) < SVt_PVNV)
3285 sv_upgrade(sv, SVt_NV);
3287 (void)SvNOK_only(sv);
3291 while (isALPHA(*d)) d++;
3292 while (isDIGIT(*d)) d++;
3294 SET_NUMERIC_STANDARD();
3295 sv_setnv(sv,atof(SvPVX(sv)) + 1.0); /* punt */
3299 while (d >= SvPVX(sv)) {
3309 *(d--) -= 'z' - 'a' + 1;
3312 /* oh,oh, the number grew */
3313 SvGROW(sv, SvCUR(sv) + 2);
3315 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
3324 sv_dec(register SV *sv)
3330 if (SvTHINKFIRST(sv)) {
3331 if (SvREADONLY(sv)) {
3333 if (curcop != &compiling)
3338 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec)) return;
3339 #endif /* OVERLOAD */
3345 flags = SvFLAGS(sv);
3346 if (flags & SVp_NOK) {
3348 (void)SvNOK_only(sv);
3351 if (flags & SVp_IOK) {
3352 if (SvIVX(sv) == IV_MIN)
3353 sv_setnv(sv, (double)IV_MIN - 1.0);
3355 (void)SvIOK_only(sv);
3360 if (!(flags & SVp_POK)) {
3361 if ((flags & SVTYPEMASK) < SVt_PVNV)
3362 sv_upgrade(sv, SVt_NV);
3364 (void)SvNOK_only(sv);
3367 SET_NUMERIC_STANDARD();
3368 sv_setnv(sv,atof(SvPVX(sv)) - 1.0); /* punt */
3371 /* Make a string that will exist for the duration of the expression
3372 * evaluation. Actually, it may have to last longer than that, but
3373 * hopefully we won't free it until it has been assigned to a
3374 * permanent location. */
3380 tmps_max += (tmps_max < 512) ? 128 : 512;
3381 Renew(tmps_stack, tmps_max, SV*);
3385 sv_mortalcopy(SV *oldstr)
3394 sv_setsv(sv,oldstr);
3395 if (++tmps_ix >= tmps_max)
3397 tmps_stack[tmps_ix] = sv;
3411 SvFLAGS(sv) = SVs_TEMP;
3412 if (++tmps_ix >= tmps_max)
3414 tmps_stack[tmps_ix] = sv;
3418 /* same thing without the copying */
3421 sv_2mortal(register SV *sv)
3426 if (SvREADONLY(sv) && curcop != &compiling)
3428 if (++tmps_ix >= tmps_max)
3430 tmps_stack[tmps_ix] = sv;
3436 newSVpv(char *s, STRLEN len)
3446 sv_setpvn(sv,s,len);
3461 sv_setpvn(sv,s,len);
3467 newSVpvf(const char* pat, ...)
3471 newSVpvf(pat, va_alist)
3484 va_start(args, pat);
3488 sv_vsetpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
3530 sv_upgrade(sv, SVt_RV);
3532 SvRV(sv) = SvREFCNT_inc(ref);
3540 Perl_newRV_noinc(SV *ref)
3549 /* make an exact duplicate of old */
3552 newSVsv(register SV *old)
3558 if (SvTYPE(old) == SVTYPEMASK) {
3559 warn("semi-panic: attempt to dup freed string");
3577 sv_reset(register char *s, HV *stash)
3590 if (!*s) { /* reset ?? searches */
3591 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
3592 pm->op_pmflags &= ~PMf_USED;
3597 /* reset variables */
3599 if (!HvARRAY(stash))
3602 Zero(todo, 256, char);
3609 for ( ; i <= max; i++) {
3612 for (i = 0; i <= (I32) HvMAX(stash); i++) {
3613 for (entry = HvARRAY(stash)[i];
3615 entry = HeNEXT(entry)) {
3616 if (!todo[(U8)*HeKEY(entry)])
3618 gv = (GV*)HeVAL(entry);
3621 if (SvTYPE(sv) >= SVt_PV) {
3623 if (SvPVX(sv) != Nullch)
3630 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
3632 #ifndef VMS /* VMS has no environ array */
3634 environ[0] = Nullch;
3648 switch (SvTYPE(sv)) {
3656 croak("Bad filehandle: %s", GvNAME(gv));
3660 croak(no_usym, "filehandle");
3662 return sv_2io(SvRV(sv));
3663 gv = gv_fetchpv(SvPV(sv,na), FALSE, SVt_PVIO);
3669 croak("Bad filehandle: %s", SvPV(sv,na));
3676 sv_2cv(SV *sv, HV **st, GV **gvp, I32 lref)
3682 return *gvp = Nullgv, Nullcv;
3683 switch (SvTYPE(sv)) {
3703 if (SvTYPE(cv) != SVt_PVCV)
3704 croak("Not a subroutine reference");
3712 gv = gv_fetchpv(SvPV(sv, na), lref, SVt_PVCV);
3718 if (lref && !GvCVu(gv)) {
3721 tmpsv = NEWSV(704,0);
3722 gv_efullname3(tmpsv, gv, Nullch);
3723 newSUB(start_subparse(FALSE, 0),
3724 newSVOP(OP_CONST, 0, tmpsv),
3729 croak("Unable to create sub named \"%s\"", SvPV(sv,na));
3736 sv_true(register SV *sv)
3743 if ((tXpv = (XPV*)SvANY(sv)) &&
3744 (*tXpv->xpv_pv > '0' ||
3745 tXpv->xpv_cur > 1 ||
3746 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
3753 return SvIVX(sv) != 0;
3756 return SvNVX(sv) != 0.0;
3758 return sv_2bool(sv);
3764 sv_iv(register SV *sv)
3772 sv_uv(register SV *sv)
3780 sv_nv(register SV *sv)
3788 sv_pvn(SV *sv, STRLEN *lp)
3794 return sv_2pv(sv, lp);
3798 sv_pvn_force(SV *sv, STRLEN *lp)
3802 if (SvREADONLY(sv)) {
3804 if (curcop != &compiling)
3812 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
3813 if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV) {
3820 croak("Can't coerce %s to string in %s", sv_reftype(sv,0),
3821 op_name[op->op_type]);
3826 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
3831 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
3832 SvGROW(sv, len + 1);
3833 Move(s,SvPVX(sv),len,char);
3838 SvPOK_on(sv); /* validate pointer */
3840 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%lx 2pv(%s)\n",
3841 (unsigned long)sv,SvPVX(sv)));
3848 sv_reftype(SV *sv, int ob)
3850 if (ob && SvOBJECT(sv))
3851 return HvNAME(SvSTASH(sv));
3853 switch (SvTYPE(sv)) {
3867 case SVt_PVLV: return "LVALUE";
3868 case SVt_PVAV: return "ARRAY";
3869 case SVt_PVHV: return "HASH";
3870 case SVt_PVCV: return "CODE";
3871 case SVt_PVGV: return "GLOB";
3872 case SVt_PVFM: return "FORMLINE";
3873 default: return "UNKNOWN";
3894 sv_isa(SV *sv, char *name)
3906 return strEQ(HvNAME(SvSTASH(sv)), name);
3910 newSVrv(SV *rv, char *classname)
3920 sv_check_thinkfirst(rv);
3923 #endif /* OVERLOAD */
3925 if (SvTYPE(rv) < SVt_RV)
3926 sv_upgrade(rv, SVt_RV);
3929 SvRV(rv) = SvREFCNT_inc(sv);
3933 HV* stash = gv_stashpv(classname, TRUE);
3934 (void)sv_bless(rv, stash);
3940 sv_setref_pv(SV *rv, char *classname, void *pv)
3943 sv_setsv(rv, &sv_undef);
3947 sv_setiv(newSVrv(rv,classname), (IV)pv);
3952 sv_setref_iv(SV *rv, char *classname, IV iv)
3954 sv_setiv(newSVrv(rv,classname), iv);
3959 sv_setref_nv(SV *rv, char *classname, double nv)
3961 sv_setnv(newSVrv(rv,classname), nv);
3966 sv_setref_pvn(SV *rv, char *classname, char *pv, I32 n)
3968 sv_setpvn(newSVrv(rv,classname), pv, n);
3973 sv_bless(SV *sv, HV *stash)
3978 croak("Can't bless non-reference value");
3980 if (SvFLAGS(ref) & (SVs_OBJECT|SVf_READONLY)) {
3981 if (SvREADONLY(ref))
3983 if (SvOBJECT(ref)) {
3984 if (SvTYPE(ref) != SVt_PVIO)
3986 SvREFCNT_dec(SvSTASH(ref));
3990 if (SvTYPE(ref) != SVt_PVIO)
3992 (void)SvUPGRADE(ref, SVt_PVMG);
3993 SvSTASH(ref) = (HV*)SvREFCNT_inc(stash);
4000 #endif /* OVERLOAD */
4008 assert(SvTYPE(sv) == SVt_PVGV);
4012 sv_unmagic(sv, '*');
4013 Safefree(GvNAME(sv));
4015 SvFLAGS(sv) &= ~SVTYPEMASK;
4016 SvFLAGS(sv) |= SVt_PVMG;
4026 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
4029 sv_2mortal(rv); /* Schedule for freeing later */
4035 sv_magic((sv), Nullsv, 't', Nullch, 0);
4041 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
4042 MAGIC *mg = mg_find(sv, 't');
4051 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
4052 MAGIC *mg = mg_find(sv, 't');
4053 if (mg && ((mg->mg_len & 1) || (mg->mg_len & 2) && mg->mg_obj == sv))
4060 sv_setpviv(SV *sv, IV iv)
4063 char buf[TYPE_DIGITS(UV)];
4064 char *ptr = buf + sizeof(buf);
4069 sv_setpvn(sv, "", 0);
4078 *--ptr = '0' + (uv % 10);
4080 len = (buf + sizeof(buf)) - ptr;
4081 /* taking advantage of SvCUR(sv) == 0 */
4082 SvGROW(sv, sign + len + 1);
4086 memcpy(p, ptr, len);
4089 SvCUR(sv) = p - SvPVX(sv);
4094 sv_setpvf(SV *sv, const char* pat, ...)
4098 sv_setpvf(sv, pat, va_alist)
4106 va_start(args, pat);
4110 sv_vsetpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
4116 sv_catpvf(SV *sv, const char* pat, ...)
4120 sv_catpvf(sv, pat, va_alist)
4128 va_start(args, pat);
4132 sv_vcatpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
4137 sv_vsetpvfn(SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *used_locale)
4139 sv_setpvn(sv, "", 0);
4140 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, used_locale);
4144 sv_vcatpvfn(SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *used_locale)
4152 static char nullstr[] = "(null)";
4154 /* no matter what, this is a string now */
4155 (void)SvPV_force(sv, origlen);
4157 /* special-case "", "%s", and "%_" */
4160 if (patlen == 2 && pat[0] == '%') {
4164 char *s = va_arg(*args, char*);
4165 sv_catpv(sv, s ? s : nullstr);
4167 else if (svix < svmax)
4168 sv_catsv(sv, *svargs);
4172 sv_catsv(sv, va_arg(*args, SV*));
4175 /* See comment on '_' below */
4180 patend = (char*)pat + patlen;
4181 for (p = (char*)pat; p < patend; p = q) {
4189 bool has_precis = FALSE;
4193 STRLEN esignlen = 0;
4195 char *eptr = Nullch;
4197 char ebuf[TYPE_DIGITS(int) * 2 + 16]; /* large enough for "%#.#f" */
4199 static char *efloatbuf = Nullch;
4200 static STRLEN efloatsize = 0;
4212 for (q = p; q < patend && *q != '%'; ++q) ;
4214 sv_catpvn(sv, p, q - p);
4252 case '1': case '2': case '3':
4253 case '4': case '5': case '6':
4254 case '7': case '8': case '9':
4257 width = width * 10 + (*q++ - '0');
4262 i = va_arg(*args, int);
4264 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
4266 width = (i < 0) ? -i : i;
4277 i = va_arg(*args, int);
4279 i = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
4280 precis = (i < 0) ? 0 : i;
4286 precis = precis * 10 + (*q++ - '0');
4295 #if 0 /* when quads have better support within Perl */
4296 if (*(q + 1) == 'l') {
4322 c = va_arg(*args, int);
4324 c = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
4331 eptr = va_arg(*args, char*);
4333 elen = strlen(eptr);
4336 elen = sizeof nullstr - 1;
4339 else if (svix < svmax)
4340 eptr = SvPVx(svargs[svix++], elen);
4345 * The "%_" hack might have to be changed someday,
4346 * if ISO or ANSI decide to use '_' for something.
4347 * So we keep it hidden from users' code.
4351 eptr = SvPVx(va_arg(*args, SV*), elen);
4354 if (has_precis && elen > precis)
4362 uv = (UV)va_arg(*args, void*);
4364 uv = (svix < svmax) ? (UV)svargs[svix++] : 0;
4375 case 'h': iv = (short)va_arg(*args, int); break;
4376 default: iv = va_arg(*args, int); break;
4377 case 'l': iv = va_arg(*args, long); break;
4378 case 'V': iv = va_arg(*args, IV); break;
4382 iv = (svix < svmax) ? SvIVx(svargs[svix++]) : 0;
4384 case 'h': iv = (short)iv; break;
4385 default: iv = (int)iv; break;
4386 case 'l': iv = (long)iv; break;
4393 esignbuf[esignlen++] = plus;
4397 esignbuf[esignlen++] = '-';
4423 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
4424 default: uv = va_arg(*args, unsigned); break;
4425 case 'l': uv = va_arg(*args, unsigned long); break;
4426 case 'V': uv = va_arg(*args, UV); break;
4430 uv = (svix < svmax) ? SvUVx(svargs[svix++]) : 0;
4432 case 'h': uv = (unsigned short)uv; break;
4433 default: uv = (unsigned)uv; break;
4434 case 'l': uv = (unsigned long)uv; break;
4440 eptr = ebuf + sizeof ebuf;
4444 p = (c == 'X') ? "0123456789ABCDEF" : "0123456789abcdef";
4450 esignbuf[esignlen++] = '0';
4451 esignbuf[esignlen++] = c; /* 'x' or 'X' */
4457 *--eptr = '0' + dig;
4459 if (alt && *eptr != '0')
4462 default: /* it had better be ten or less */
4465 *--eptr = '0' + dig;
4466 } while (uv /= base);
4469 elen = (ebuf + sizeof ebuf) - eptr;
4470 if (has_precis && precis > elen)
4471 zeros = precis - elen;
4474 /* FLOATING POINT */
4477 c = 'f'; /* maybe %F isn't supported here */
4483 /* This is evil, but floating point is even more evil */
4486 nv = va_arg(*args, double);
4488 nv = (svix < svmax) ? SvNVx(svargs[svix++]) : 0.0;
4491 if (c != 'e' && c != 'E') {
4493 (void)frexp(nv, &i);
4494 if (i == PERL_INT_MIN)
4495 die("panic: frexp");
4497 need = BIT_DIGITS(i);
4499 need += has_precis ? precis : 6; /* known default */
4503 need += 20; /* fudge factor */
4504 if (efloatsize < need) {
4505 Safefree(efloatbuf);
4506 efloatsize = need + 20; /* more fudge */
4507 New(906, efloatbuf, efloatsize, char);
4510 eptr = ebuf + sizeof ebuf;
4515 do { *--eptr = '0' + (base % 10); } while (base /= 10);
4520 do { *--eptr = '0' + (base % 10); } while (base /= 10);
4532 (void)sprintf(efloatbuf, eptr, nv);
4535 elen = strlen(efloatbuf);
4539 * User-defined locales may include arbitrary characters.
4540 * And, unfortunately, some system may alloc the "C" locale
4541 * to be overridden by a malicious user.
4544 *used_locale = TRUE;
4545 #endif /* LC_NUMERIC */
4552 i = SvCUR(sv) - origlen;
4555 case 'h': *(va_arg(*args, short*)) = i; break;
4556 default: *(va_arg(*args, int*)) = i; break;
4557 case 'l': *(va_arg(*args, long*)) = i; break;
4558 case 'V': *(va_arg(*args, IV*)) = i; break;
4561 else if (svix < svmax)
4562 sv_setuv(svargs[svix++], (UV)i);
4563 continue; /* not "break" */
4569 if (!args && dowarn &&
4570 (op->op_type == OP_PRTF || op->op_type == OP_SPRINTF)) {
4571 SV *msg = sv_newmortal();
4572 sv_setpvf(msg, "Invalid conversion in %s: ",
4573 (op->op_type == OP_PRTF) ? "printf" : "sprintf");
4575 sv_catpvf(msg, isPRINT(c) ? "\"%%%c\"" : "\"%%\\%03o\"",
4578 sv_catpv(msg, "end of string");
4579 warn("%_", msg); /* yes, this is reentrant */
4582 /* output mangled stuff ... */
4588 /* ... right here, because formatting flags should not apply */
4589 SvGROW(sv, SvCUR(sv) + elen + 1);
4591 memcpy(p, eptr, elen);
4594 SvCUR(sv) = p - SvPVX(sv);
4595 continue; /* not "break" */
4598 have = esignlen + zeros + elen;
4599 need = (have > width ? have : width);
4602 SvGROW(sv, SvCUR(sv) + need + 1);
4604 if (esignlen && fill == '0') {
4605 for (i = 0; i < esignlen; i++)
4609 memset(p, fill, gap);
4612 if (esignlen && fill != '0') {
4613 for (i = 0; i < esignlen; i++)
4617 for (i = zeros; i; i--)
4621 memcpy(p, eptr, elen);
4625 memset(p, ' ', gap);
4629 SvCUR(sv) = p - SvPVX(sv);
4637 SV *d = sv_newmortal();
4643 PerlIO_printf(Perl_debug_log, "SV = 0\n");
4647 flags = SvFLAGS(sv);
4650 sv_setpvf(d, "(0x%lx)\n REFCNT = %ld\n FLAGS = (",
4651 (unsigned long)SvANY(sv), (long)SvREFCNT(sv));
4652 if (flags & SVs_PADBUSY) sv_catpv(d, "PADBUSY,");
4653 if (flags & SVs_PADTMP) sv_catpv(d, "PADTMP,");
4654 if (flags & SVs_PADMY) sv_catpv(d, "PADMY,");
4655 if (flags & SVs_TEMP) sv_catpv(d, "TEMP,");
4656 if (flags & SVs_OBJECT) sv_catpv(d, "OBJECT,");
4657 if (flags & SVs_GMG) sv_catpv(d, "GMG,");
4658 if (flags & SVs_SMG) sv_catpv(d, "SMG,");
4659 if (flags & SVs_RMG) sv_catpv(d, "RMG,");
4661 if (flags & SVf_IOK) sv_catpv(d, "IOK,");
4662 if (flags & SVf_NOK) sv_catpv(d, "NOK,");
4663 if (flags & SVf_POK) sv_catpv(d, "POK,");
4664 if (flags & SVf_ROK) sv_catpv(d, "ROK,");
4665 if (flags & SVf_OOK) sv_catpv(d, "OOK,");
4666 if (flags & SVf_FAKE) sv_catpv(d, "FAKE,");
4667 if (flags & SVf_READONLY) sv_catpv(d, "READONLY,");
4670 if (flags & SVf_AMAGIC) sv_catpv(d, "OVERLOAD,");
4671 #endif /* OVERLOAD */
4672 if (flags & SVp_IOK) sv_catpv(d, "pIOK,");
4673 if (flags & SVp_NOK) sv_catpv(d, "pNOK,");
4674 if (flags & SVp_POK) sv_catpv(d, "pPOK,");
4675 if (flags & SVp_SCREAM) sv_catpv(d, "SCREAM,");
4680 if (CvANON(sv)) sv_catpv(d, "ANON,");
4681 if (CvUNIQUE(sv)) sv_catpv(d, "UNIQUE,");
4682 if (CvCLONE(sv)) sv_catpv(d, "CLONE,");
4683 if (CvCLONED(sv)) sv_catpv(d, "CLONED,");
4684 if (CvNODEBUG(sv)) sv_catpv(d, "NODEBUG,");
4687 if (HvSHAREKEYS(sv)) sv_catpv(d, "SHAREKEYS,");
4688 if (HvLAZYDEL(sv)) sv_catpv(d, "LAZYDEL,");
4691 if (GvINTRO(sv)) sv_catpv(d, "INTRO,");
4692 if (GvMULTI(sv)) sv_catpv(d, "MULTI,");
4693 if (GvASSUMECV(sv)) sv_catpv(d, "ASSUMECV,");
4694 if (GvIMPORTED(sv)) {
4695 sv_catpv(d, "IMPORT");
4696 if (GvIMPORTED(sv) == GVf_IMPORTED)
4697 sv_catpv(d, "ALL,");
4700 if (GvIMPORTED_SV(sv)) sv_catpv(d, " SV");
4701 if (GvIMPORTED_AV(sv)) sv_catpv(d, " AV");
4702 if (GvIMPORTED_HV(sv)) sv_catpv(d, " HV");
4703 if (GvIMPORTED_CV(sv)) sv_catpv(d, " CV");
4708 if (SvTAIL(sv)) sv_catpv(d, "TAIL,");
4709 if (SvCOMPILED(sv)) sv_catpv(d, "COMPILED,");
4713 if (*(SvEND(d) - 1) == ',')
4714 SvPVX(d)[--SvCUR(d)] = '\0';
4718 PerlIO_printf(Perl_debug_log, "SV = ");
4721 PerlIO_printf(Perl_debug_log, "NULL%s\n", s);
4724 PerlIO_printf(Perl_debug_log, "IV%s\n", s);
4727 PerlIO_printf(Perl_debug_log, "NV%s\n", s);
4730 PerlIO_printf(Perl_debug_log, "RV%s\n", s);
4733 PerlIO_printf(Perl_debug_log, "PV%s\n", s);
4736 PerlIO_printf(Perl_debug_log, "PVIV%s\n", s);
4739 PerlIO_printf(Perl_debug_log, "PVNV%s\n", s);
4742 PerlIO_printf(Perl_debug_log, "PVBM%s\n", s);
4745 PerlIO_printf(Perl_debug_log, "PVMG%s\n", s);
4748 PerlIO_printf(Perl_debug_log, "PVLV%s\n", s);
4751 PerlIO_printf(Perl_debug_log, "PVAV%s\n", s);
4754 PerlIO_printf(Perl_debug_log, "PVHV%s\n", s);
4757 PerlIO_printf(Perl_debug_log, "PVCV%s\n", s);
4760 PerlIO_printf(Perl_debug_log, "PVGV%s\n", s);
4763 PerlIO_printf(Perl_debug_log, "PVFM%s\n", s);
4766 PerlIO_printf(Perl_debug_log, "PVIO%s\n", s);
4769 PerlIO_printf(Perl_debug_log, "UNKNOWN%s\n", s);
4772 if (type >= SVt_PVIV || type == SVt_IV)
4773 PerlIO_printf(Perl_debug_log, " IV = %ld\n", (long)SvIVX(sv));
4774 if (type >= SVt_PVNV || type == SVt_NV) {
4775 SET_NUMERIC_STANDARD();
4776 PerlIO_printf(Perl_debug_log, " NV = %.*g\n", DBL_DIG, SvNVX(sv));
4779 PerlIO_printf(Perl_debug_log, " RV = 0x%lx\n", (long)SvRV(sv));
4785 if (type <= SVt_PVLV) {
4787 PerlIO_printf(Perl_debug_log, " PV = 0x%lx \"%s\"\n CUR = %ld\n LEN = %ld\n",
4788 (long)SvPVX(sv), SvPVX(sv), (long)SvCUR(sv), (long)SvLEN(sv));
4790 PerlIO_printf(Perl_debug_log, " PV = 0\n");
4792 if (type >= SVt_PVMG) {
4794 PerlIO_printf(Perl_debug_log, " MAGIC = 0x%lx\n", (long)SvMAGIC(sv));
4797 PerlIO_printf(Perl_debug_log, " STASH = \"%s\"\n", HvNAME(SvSTASH(sv)));
4801 PerlIO_printf(Perl_debug_log, " TYPE = %c\n", LvTYPE(sv));
4802 PerlIO_printf(Perl_debug_log, " TARGOFF = %ld\n", (long)LvTARGOFF(sv));
4803 PerlIO_printf(Perl_debug_log, " TARGLEN = %ld\n", (long)LvTARGLEN(sv));
4804 PerlIO_printf(Perl_debug_log, " TARG = 0x%lx\n", (long)LvTARG(sv));
4805 sv_dump(LvTARG(sv));
4808 PerlIO_printf(Perl_debug_log, " ARRAY = 0x%lx\n", (long)AvARRAY(sv));
4809 PerlIO_printf(Perl_debug_log, " ALLOC = 0x%lx\n", (long)AvALLOC(sv));
4810 PerlIO_printf(Perl_debug_log, " FILL = %ld\n", (long)AvFILLp(sv));
4811 PerlIO_printf(Perl_debug_log, " MAX = %ld\n", (long)AvMAX(sv));
4812 PerlIO_printf(Perl_debug_log, " ARYLEN = 0x%lx\n", (long)AvARYLEN(sv));
4813 flags = AvFLAGS(sv);
4815 if (flags & AVf_REAL) sv_catpv(d, ",REAL");
4816 if (flags & AVf_REIFY) sv_catpv(d, ",REIFY");
4817 if (flags & AVf_REUSED) sv_catpv(d, ",REUSED");
4818 PerlIO_printf(Perl_debug_log, " FLAGS = (%s)\n",
4819 SvCUR(d) ? SvPVX(d) + 1 : "");
4822 PerlIO_printf(Perl_debug_log, " ARRAY = 0x%lx\n",(long)HvARRAY(sv));
4823 PerlIO_printf(Perl_debug_log, " KEYS = %ld\n", (long)HvKEYS(sv));
4824 PerlIO_printf(Perl_debug_log, " FILL = %ld\n", (long)HvFILL(sv));
4825 PerlIO_printf(Perl_debug_log, " MAX = %ld\n", (long)HvMAX(sv));
4826 PerlIO_printf(Perl_debug_log, " RITER = %ld\n", (long)HvRITER(sv));
4827 PerlIO_printf(Perl_debug_log, " EITER = 0x%lx\n",(long) HvEITER(sv));
4829 PerlIO_printf(Perl_debug_log, " PMROOT = 0x%lx\n",(long)HvPMROOT(sv));
4831 PerlIO_printf(Perl_debug_log, " NAME = \"%s\"\n", HvNAME(sv));
4835 PerlIO_printf(Perl_debug_log, " PROTOTYPE = \"%s\"\n", SvPV(sv,na));
4838 PerlIO_printf(Perl_debug_log, " STASH = 0x%lx\n", (long)CvSTASH(sv));
4839 PerlIO_printf(Perl_debug_log, " START = 0x%lx\n", (long)CvSTART(sv));
4840 PerlIO_printf(Perl_debug_log, " ROOT = 0x%lx\n", (long)CvROOT(sv));
4841 PerlIO_printf(Perl_debug_log, " XSUB = 0x%lx\n", (long)CvXSUB(sv));
4842 PerlIO_printf(Perl_debug_log, " XSUBANY = %ld\n", (long)CvXSUBANY(sv).any_i32);
4843 PerlIO_printf(Perl_debug_log, " GV = 0x%lx", (long)CvGV(sv));
4844 if (CvGV(sv) && GvNAME(CvGV(sv))) {
4845 PerlIO_printf(Perl_debug_log, " \"%s\"\n", GvNAME(CvGV(sv)));
4847 PerlIO_printf(Perl_debug_log, "\n");
4849 PerlIO_printf(Perl_debug_log, " FILEGV = 0x%lx\n", (long)CvFILEGV(sv));
4850 PerlIO_printf(Perl_debug_log, " DEPTH = %ld\n", (long)CvDEPTH(sv));
4851 PerlIO_printf(Perl_debug_log, " PADLIST = 0x%lx\n", (long)CvPADLIST(sv));
4852 PerlIO_printf(Perl_debug_log, " OUTSIDE = 0x%lx\n", (long)CvOUTSIDE(sv));
4854 PerlIO_printf(Perl_debug_log, " MUTEXP = 0x%lx\n", (long)CvMUTEXP(sv));
4855 PerlIO_printf(Perl_debug_log, " OWNER = 0x%lx\n", (long)CvOWNER(sv));
4856 #endif /* USE_THREADS */
4857 PerlIO_printf(Perl_debug_log, " FLAGS = 0x%lx\n",
4858 (unsigned long)CvFLAGS(sv));
4859 if (type == SVt_PVFM)
4860 PerlIO_printf(Perl_debug_log, " LINES = %ld\n", (long)FmLINES(sv));
4863 PerlIO_printf(Perl_debug_log, " NAME = \"%s\"\n", GvNAME(sv));
4864 PerlIO_printf(Perl_debug_log, " NAMELEN = %ld\n", (long)GvNAMELEN(sv));
4865 PerlIO_printf(Perl_debug_log, " STASH = \"%s\"\n", HvNAME(GvSTASH(sv)));
4866 PerlIO_printf(Perl_debug_log, " GP = 0x%lx\n", (long)GvGP(sv));
4867 PerlIO_printf(Perl_debug_log, " SV = 0x%lx\n", (long)GvSV(sv));
4868 PerlIO_printf(Perl_debug_log, " REFCNT = %ld\n", (long)GvREFCNT(sv));
4869 PerlIO_printf(Perl_debug_log, " IO = 0x%lx\n", (long)GvIOp(sv));
4870 PerlIO_printf(Perl_debug_log, " FORM = 0x%lx\n", (long)GvFORM(sv));
4871 PerlIO_printf(Perl_debug_log, " AV = 0x%lx\n", (long)GvAV(sv));
4872 PerlIO_printf(Perl_debug_log, " HV = 0x%lx\n", (long)GvHV(sv));
4873 PerlIO_printf(Perl_debug_log, " CV = 0x%lx\n", (long)GvCV(sv));
4874 PerlIO_printf(Perl_debug_log, " CVGEN = 0x%lx\n", (long)GvCVGEN(sv));
4875 PerlIO_printf(Perl_debug_log, " LASTEXPR = %ld\n", (long)GvLASTEXPR(sv));
4876 PerlIO_printf(Perl_debug_log, " LINE = %ld\n", (long)GvLINE(sv));
4877 PerlIO_printf(Perl_debug_log, " FILEGV = 0x%lx\n", (long)GvFILEGV(sv));
4878 PerlIO_printf(Perl_debug_log, " EGV = 0x%lx\n", (long)GvEGV(sv));
4881 PerlIO_printf(Perl_debug_log, " IFP = 0x%lx\n", (long)IoIFP(sv));
4882 PerlIO_printf(Perl_debug_log, " OFP = 0x%lx\n", (long)IoOFP(sv));
4883 PerlIO_printf(Perl_debug_log, " DIRP = 0x%lx\n", (long)IoDIRP(sv));
4884 PerlIO_printf(Perl_debug_log, " LINES = %ld\n", (long)IoLINES(sv));
4885 PerlIO_printf(Perl_debug_log, " PAGE = %ld\n", (long)IoPAGE(sv));
4886 PerlIO_printf(Perl_debug_log, " PAGE_LEN = %ld\n", (long)IoPAGE_LEN(sv));
4887 PerlIO_printf(Perl_debug_log, " LINES_LEFT = %ld\n", (long)IoLINES_LEFT(sv));
4888 PerlIO_printf(Perl_debug_log, " TOP_NAME = \"%s\"\n", IoTOP_NAME(sv));
4889 PerlIO_printf(Perl_debug_log, " TOP_GV = 0x%lx\n", (long)IoTOP_GV(sv));
4890 PerlIO_printf(Perl_debug_log, " FMT_NAME = \"%s\"\n", IoFMT_NAME(sv));
4891 PerlIO_printf(Perl_debug_log, " FMT_GV = 0x%lx\n", (long)IoFMT_GV(sv));
4892 PerlIO_printf(Perl_debug_log, " BOTTOM_NAME = \"%s\"\n", IoBOTTOM_NAME(sv));
4893 PerlIO_printf(Perl_debug_log, " BOTTOM_GV = 0x%lx\n", (long)IoBOTTOM_GV(sv));
4894 PerlIO_printf(Perl_debug_log, " SUBPROCESS = %ld\n", (long)IoSUBPROCESS(sv));
4895 PerlIO_printf(Perl_debug_log, " TYPE = %c\n", IoTYPE(sv));
4896 PerlIO_printf(Perl_debug_log, " FLAGS = 0x%lx\n", (long)IoFLAGS(sv));