3 * Copyright (c) 1991-1999, 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 * "It's a big house this, and very peculiar. Always a bit more to discover,
12 * and no knowing what you'll find around a corner. And Elves, sir!" --Samwise
20 * The compiler on Concurrent CX/UX systems has a subtle bug which only
21 * seems to show up when compiling pp.c - it generates the wrong double
22 * precision constant value for (double)UV_MAX when used inline in the body
23 * of the code below, so this makes a static variable up front (which the
24 * compiler seems to get correct) and uses it in place of UV_MAX below.
26 #ifdef CXUX_BROKEN_CONSTANT_CONVERT
27 static double UV_MAX_cxux = ((double)UV_MAX);
31 * Types used in bitwise operations.
33 * Normally we'd just use IV and UV. However, some hardware and
34 * software combinations (e.g. Alpha and current OSF/1) don't have a
35 * floating-point type to use for NV that has adequate bits to fully
36 * hold an IV/UV. (In other words, sizeof(long) == sizeof(double).)
38 * It just so happens that "int" is the right size almost everywhere.
44 * Mask used after bitwise operations.
46 * There is at least one realm (Cray word machines) that doesn't
47 * have an integral type (except char) small enough to be represented
48 * in a double without loss; that is, it has no 32-bit type.
50 #if LONGSIZE > 4 && defined(_CRAY) && !defined(_CRAYMPP)
52 # define BW_MASK ((1 << BW_BITS) - 1)
53 # define BW_SIGN (1 << (BW_BITS - 1))
54 # define BWi(i) (((i) & BW_SIGN) ? ((i) | ~BW_MASK) : ((i) & BW_MASK))
55 # define BWu(u) ((u) & BW_MASK)
62 * Offset for integer pack/unpack.
64 * On architectures where I16 and I32 aren't really 16 and 32 bits,
65 * which for now are all Crays, pack and unpack have to play games.
69 * These values are required for portability of pack() output.
70 * If they're not right on your machine, then pack() and unpack()
71 * wouldn't work right anyway; you'll need to apply the Cray hack.
72 * (I'd like to check them with #if, but you can't use sizeof() in
73 * the preprocessor.) --???
76 The appropriate SHORTSIZE, INTSIZE, LONGSIZE, and LONGLONGSIZE
77 defines are now in config.h. --Andy Dougherty April 1998
82 /* CROSSCOMPILE and MULTIARCH are going to affect pp_pack() and pp_unpack().
85 #if SHORTSIZE != SIZE16 || LONGSIZE != SIZE32
86 # define PERL_NATINT_PACK
89 #if BYTEORDER > 0xFFFF && defined(_CRAY) && !defined(_CRAYMPP)
90 # if BYTEORDER == 0x12345678
91 # define OFF16(p) (char*)(p)
92 # define OFF32(p) (char*)(p)
94 # if BYTEORDER == 0x87654321
95 # define OFF16(p) ((char*)(p) + (sizeof(U16) - SIZE16))
96 # define OFF32(p) ((char*)(p) + (sizeof(U32) - SIZE32))
98 }}}} bad cray byte order
101 # define COPY16(s,p) (*(p) = 0, Copy(s, OFF16(p), SIZE16, char))
102 # define COPY32(s,p) (*(p) = 0, Copy(s, OFF32(p), SIZE32, char))
103 # define COPYNN(s,p,n) (*(p) = 0, Copy(s, (char *)(p), n, char))
104 # define CAT16(sv,p) sv_catpvn(sv, OFF16(p), SIZE16)
105 # define CAT32(sv,p) sv_catpvn(sv, OFF32(p), SIZE32)
107 # define COPY16(s,p) Copy(s, p, SIZE16, char)
108 # define COPY32(s,p) Copy(s, p, SIZE32, char)
109 # define COPYNN(s,p,n) Copy(s, (char *)(p), n, char)
110 # define CAT16(sv,p) sv_catpvn(sv, (char*)(p), SIZE16)
111 # define CAT32(sv,p) sv_catpvn(sv, (char*)(p), SIZE32)
114 /* variations on pp_null */
120 /* XXX I can't imagine anyone who doesn't have this actually _needs_
121 it, since pid_t is an integral type.
124 #ifdef NEED_GETPID_PROTO
125 extern Pid_t getpid (void);
131 if (GIMME_V == G_SCALAR)
132 XPUSHs(&PL_sv_undef);
146 if (PL_op->op_private & OPpLVAL_INTRO)
147 SAVECLEARSV(PL_curpad[PL_op->op_targ]);
149 if (PL_op->op_flags & OPf_REF) {
153 if (GIMME == G_ARRAY) {
154 I32 maxarg = AvFILL((AV*)TARG) + 1;
156 if (SvMAGICAL(TARG)) {
158 for (i=0; i < maxarg; i++) {
159 SV **svp = av_fetch((AV*)TARG, i, FALSE);
160 SP[i+1] = (svp) ? *svp : &PL_sv_undef;
164 Copy(AvARRAY((AV*)TARG), SP+1, maxarg, SV*);
169 SV* sv = sv_newmortal();
170 I32 maxarg = AvFILL((AV*)TARG) + 1;
171 sv_setiv(sv, maxarg);
183 if (PL_op->op_private & OPpLVAL_INTRO)
184 SAVECLEARSV(PL_curpad[PL_op->op_targ]);
185 if (PL_op->op_flags & OPf_REF)
188 if (gimme == G_ARRAY) {
191 else if (gimme == G_SCALAR) {
192 SV* sv = sv_newmortal();
193 if (HvFILL((HV*)TARG))
194 Perl_sv_setpvf(aTHX_ sv, "%ld/%ld",
195 (long)HvFILL((HV*)TARG), (long)HvMAX((HV*)TARG) + 1);
205 DIE(aTHX_ "NOT IMPL LINE %d",__LINE__);
216 tryAMAGICunDEREF(to_gv);
219 if (SvTYPE(sv) == SVt_PVIO) {
220 GV *gv = (GV*) sv_newmortal();
221 gv_init(gv, 0, "", 0, 0);
222 GvIOp(gv) = (IO *)sv;
223 (void)SvREFCNT_inc(sv);
226 else if (SvTYPE(sv) != SVt_PVGV)
227 DIE(aTHX_ "Not a GLOB reference");
230 if (SvTYPE(sv) != SVt_PVGV) {
234 if (SvGMAGICAL(sv)) {
240 /* If this is a 'my' scalar and flag is set then vivify
243 if (PL_op->op_private & OPpDEREF) {
244 GV *gv = (GV *) newSV(0);
247 if (cUNOP->op_first->op_type == OP_PADSV) {
248 SV *padname = *av_fetch(PL_comppad_name, cUNOP->op_first->op_targ, 4);
249 name = SvPV(padname,len);
251 gv_init(gv, PL_curcop->cop_stash, name, len, 0);
252 sv_upgrade(sv, SVt_RV);
253 SvRV(sv) = (SV *) gv;
258 if (PL_op->op_flags & OPf_REF ||
259 PL_op->op_private & HINT_STRICT_REFS)
260 DIE(aTHX_ PL_no_usym, "a symbol");
261 if (ckWARN(WARN_UNINITIALIZED))
262 Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit);
266 if ((PL_op->op_flags & OPf_SPECIAL) &&
267 !(PL_op->op_flags & OPf_MOD))
269 sv = (SV*)gv_fetchpv(sym, FALSE, SVt_PVGV);
274 if (PL_op->op_private & HINT_STRICT_REFS)
275 DIE(aTHX_ PL_no_symref, sym, "a symbol");
276 sv = (SV*)gv_fetchpv(sym, TRUE, SVt_PVGV);
280 if (PL_op->op_private & OPpLVAL_INTRO)
281 save_gp((GV*)sv, !(PL_op->op_flags & OPf_SPECIAL));
292 tryAMAGICunDEREF(to_sv);
295 switch (SvTYPE(sv)) {
299 DIE(aTHX_ "Not a SCALAR reference");
307 if (SvTYPE(gv) != SVt_PVGV) {
308 if (SvGMAGICAL(sv)) {
314 if (PL_op->op_flags & OPf_REF ||
315 PL_op->op_private & HINT_STRICT_REFS)
316 DIE(aTHX_ PL_no_usym, "a SCALAR");
317 if (ckWARN(WARN_UNINITIALIZED))
318 Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit);
322 if ((PL_op->op_flags & OPf_SPECIAL) &&
323 !(PL_op->op_flags & OPf_MOD))
325 gv = (GV*)gv_fetchpv(sym, FALSE, SVt_PV);
330 if (PL_op->op_private & HINT_STRICT_REFS)
331 DIE(aTHX_ PL_no_symref, sym, "a SCALAR");
332 gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PV);
337 if (PL_op->op_flags & OPf_MOD) {
338 if (PL_op->op_private & OPpLVAL_INTRO)
339 sv = save_scalar((GV*)TOPs);
340 else if (PL_op->op_private & OPpDEREF)
341 vivify_ref(sv, PL_op->op_private & OPpDEREF);
351 SV *sv = AvARYLEN(av);
353 AvARYLEN(av) = sv = NEWSV(0,0);
354 sv_upgrade(sv, SVt_IV);
355 sv_magic(sv, (SV*)av, '#', Nullch, 0);
363 djSP; dTARGET; dPOPss;
365 if (PL_op->op_flags & OPf_MOD) {
366 if (SvTYPE(TARG) < SVt_PVLV) {
367 sv_upgrade(TARG, SVt_PVLV);
368 sv_magic(TARG, Nullsv, '.', Nullch, 0);
372 if (LvTARG(TARG) != sv) {
374 SvREFCNT_dec(LvTARG(TARG));
375 LvTARG(TARG) = SvREFCNT_inc(sv);
377 PUSHs(TARG); /* no SvSETMAGIC */
383 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
384 mg = mg_find(sv, 'g');
385 if (mg && mg->mg_len >= 0) {
389 PUSHi(i + PL_curcop->cop_arybase);
403 /* We usually try to add a non-existent subroutine in case of AUTOLOAD. */
404 /* (But not in defined().) */
405 CV *cv = sv_2cv(TOPs, &stash, &gv, !(PL_op->op_flags & OPf_SPECIAL));
408 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
411 cv = (CV*)&PL_sv_undef;
425 if (SvPOK(TOPs) && SvCUR(TOPs) >= 7) {
426 char *s = SvPVX(TOPs);
427 if (strnEQ(s, "CORE::", 6)) {
430 code = keyword(s + 6, SvCUR(TOPs) - 6);
431 if (code < 0) { /* Overridable. */
432 #define MAX_ARGS_OP ((sizeof(I32) - 1) * 2)
433 int i = 0, n = 0, seen_question = 0;
435 char str[ MAX_ARGS_OP * 2 + 2 ]; /* One ';', one '\0' */
437 while (i < MAXO) { /* The slow way. */
438 if (strEQ(s + 6, PL_op_name[i])
439 || strEQ(s + 6, PL_op_desc[i]))
445 goto nonesuch; /* Should not happen... */
447 oa = PL_opargs[i] >> OASHIFT;
449 if (oa & OA_OPTIONAL) {
453 else if (seen_question)
454 goto set; /* XXXX system, exec */
455 if ((oa & (OA_OPTIONAL - 1)) >= OA_AVREF
456 && (oa & (OA_OPTIONAL - 1)) <= OA_HVREF) {
459 /* What to do with R ((un)tie, tied, (sys)read, recv)? */
460 str[n++] = ("?$@@%&*$")[oa & (OA_OPTIONAL - 1)];
464 ret = sv_2mortal(newSVpvn(str, n - 1));
466 else if (code) /* Non-Overridable */
468 else { /* None such */
470 Perl_croak(aTHX_ "Can't find an opnumber for \"%s\"", s+6);
474 cv = sv_2cv(TOPs, &stash, &gv, FALSE);
476 ret = sv_2mortal(newSVpvn(SvPVX(cv), SvCUR(cv)));
485 CV* cv = (CV*)PL_curpad[PL_op->op_targ];
487 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
503 if (GIMME != G_ARRAY) {
507 *MARK = &PL_sv_undef;
508 *MARK = refto(*MARK);
512 EXTEND_MORTAL(SP - MARK);
514 *MARK = refto(*MARK);
519 S_refto(pTHX_ SV *sv)
523 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y') {
526 if (!(sv = LvTARG(sv)))
529 (void)SvREFCNT_inc(sv);
531 else if (SvPADTMP(sv))
535 (void)SvREFCNT_inc(sv);
538 sv_upgrade(rv, SVt_RV);
552 if (sv && SvGMAGICAL(sv))
555 if (!sv || !SvROK(sv))
559 pv = sv_reftype(sv,TRUE);
560 PUSHp(pv, strlen(pv));
570 stash = PL_curcop->cop_stash;
574 char *ptr = SvPV(ssv,len);
575 if (ckWARN(WARN_UNSAFE) && len == 0)
576 Perl_warner(aTHX_ WARN_UNSAFE,
577 "Explicit blessing to '' (assuming package main)");
578 stash = gv_stashpvn(ptr, len, TRUE);
581 (void)sv_bless(TOPs, stash);
595 elem = SvPV(sv, n_a);
599 switch (elem ? *elem : '\0')
602 if (strEQ(elem, "ARRAY"))
603 tmpRef = (SV*)GvAV(gv);
606 if (strEQ(elem, "CODE"))
607 tmpRef = (SV*)GvCVu(gv);
610 if (strEQ(elem, "FILEHANDLE")) /* XXX deprecate in 5.005 */
611 tmpRef = (SV*)GvIOp(gv);
614 if (strEQ(elem, "GLOB"))
618 if (strEQ(elem, "HASH"))
619 tmpRef = (SV*)GvHV(gv);
622 if (strEQ(elem, "IO"))
623 tmpRef = (SV*)GvIOp(gv);
626 if (strEQ(elem, "NAME"))
627 sv = newSVpvn(GvNAME(gv), GvNAMELEN(gv));
630 if (strEQ(elem, "PACKAGE"))
631 sv = newSVpv(HvNAME(GvSTASH(gv)), 0);
634 if (strEQ(elem, "SCALAR"))
648 /* Pattern matching */
653 register unsigned char *s;
656 register I32 *sfirst;
660 if (sv == PL_lastscream) {
666 SvSCREAM_off(PL_lastscream);
667 SvREFCNT_dec(PL_lastscream);
669 PL_lastscream = SvREFCNT_inc(sv);
672 s = (unsigned char*)(SvPV(sv, len));
676 if (pos > PL_maxscream) {
677 if (PL_maxscream < 0) {
678 PL_maxscream = pos + 80;
679 New(301, PL_screamfirst, 256, I32);
680 New(302, PL_screamnext, PL_maxscream, I32);
683 PL_maxscream = pos + pos / 4;
684 Renew(PL_screamnext, PL_maxscream, I32);
688 sfirst = PL_screamfirst;
689 snext = PL_screamnext;
691 if (!sfirst || !snext)
692 DIE(aTHX_ "do_study: out of memory");
694 for (ch = 256; ch; --ch)
701 snext[pos] = sfirst[ch] - pos;
708 sv_magic(sv, Nullsv, 'g', Nullch, 0); /* piggyback on m//g magic */
717 if (PL_op->op_flags & OPf_STACKED)
723 TARG = sv_newmortal();
728 /* Lvalue operators. */
740 djSP; dMARK; dTARGET;
750 SETi(do_chomp(TOPs));
756 djSP; dMARK; dTARGET;
757 register I32 count = 0;
760 count += do_chomp(POPs);
771 if (!sv || !SvANY(sv))
773 switch (SvTYPE(sv)) {
775 if (AvMAX(sv) >= 0 || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv,'P')))
779 if (HvARRAY(sv) || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv,'P')))
783 if (CvROOT(sv) || CvXSUB(sv))
800 if (!PL_op->op_private) {
809 if (SvTHINKFIRST(sv))
812 switch (SvTYPE(sv)) {
822 if (ckWARN(WARN_UNSAFE) && cv_const_sv((CV*)sv))
823 Perl_warner(aTHX_ WARN_UNSAFE, "Constant subroutine %s undefined",
824 CvANON((CV*)sv) ? "(anonymous)" : GvENAME(CvGV((CV*)sv)));
828 /* let user-undef'd sub keep its identity */
829 GV* gv = (GV*)SvREFCNT_inc(CvGV((CV*)sv));
836 SvSetMagicSV(sv, &PL_sv_undef);
840 Newz(602, gp, 1, GP);
841 GvGP(sv) = gp_ref(gp);
842 GvSV(sv) = NEWSV(72,0);
843 GvLINE(sv) = PL_curcop->cop_line;
849 if (SvTYPE(sv) >= SVt_PV && SvPVX(sv) && SvLEN(sv)) {
852 SvPV_set(sv, Nullch);
865 if (SvREADONLY(TOPs) || SvTYPE(TOPs) > SVt_PVLV)
866 Perl_croak(aTHX_ PL_no_modify);
867 if (SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) &&
868 SvIVX(TOPs) != IV_MIN)
871 SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK);
882 if (SvREADONLY(TOPs) || SvTYPE(TOPs) > SVt_PVLV)
883 Perl_croak(aTHX_ PL_no_modify);
884 sv_setsv(TARG, TOPs);
885 if (SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) &&
886 SvIVX(TOPs) != IV_MAX)
889 SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK);
903 if(SvREADONLY(TOPs) || SvTYPE(TOPs) > SVt_PVLV)
904 Perl_croak(aTHX_ PL_no_modify);
905 sv_setsv(TARG, TOPs);
906 if (SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) &&
907 SvIVX(TOPs) != IV_MIN)
910 SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK);
919 /* Ordinary operators. */
923 djSP; dATARGET; tryAMAGICbin(pow,opASSIGN);
926 SETn( pow( left, right) );
933 djSP; dATARGET; tryAMAGICbin(mult,opASSIGN);
936 SETn( left * right );
943 djSP; dATARGET; tryAMAGICbin(div,opASSIGN);
948 DIE(aTHX_ "Illegal division by zero");
950 /* insure that 20./5. == 4. */
953 if ((NV)I_V(left) == left &&
954 (NV)I_V(right) == right &&
955 (k = I_V(left)/I_V(right))*I_V(right) == I_V(left)) {
959 value = left / right;
963 value = left / right;
972 djSP; dATARGET; tryAMAGICbin(modulo,opASSIGN);
982 if (SvIOK(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs)) {
984 right = (right_neg = (i < 0)) ? -i : i;
989 right_neg = dright < 0;
994 if (!use_double && SvIOK(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs)) {
996 left = (left_neg = (i < 0)) ? -i : i;
1004 left_neg = dleft < 0;
1013 /* Somehow U_V is pessimized even if CASTFLAGS is 0 */
1015 # define CAST_D2UV(d) U_V(d)
1017 # define CAST_D2UV(d) ((UV)(d))
1019 /* Tried to do this only in the case DOUBLESIZE <= UV_SIZE,
1020 * or, in other words, precision of UV more than of NV.
1021 * But in fact the approach below turned out to be an
1022 * optimization - floor() may be slow */
1023 if (dright <= UV_MAX && dleft <= UV_MAX) {
1024 right = CAST_D2UV(dright);
1025 left = CAST_D2UV(dleft);
1030 /* Backward-compatibility clause: */
1031 dright = floor(dright + 0.5);
1032 dleft = floor(dleft + 0.5);
1035 DIE(aTHX_ "Illegal modulus zero");
1037 dans = Perl_fmod(dleft, dright);
1038 if ((left_neg != right_neg) && dans)
1039 dans = dright - dans;
1042 sv_setnv(TARG, dans);
1049 DIE(aTHX_ "Illegal modulus zero");
1052 if ((left_neg != right_neg) && ans)
1055 /* XXX may warn: unary minus operator applied to unsigned type */
1056 /* could change -foo to be (~foo)+1 instead */
1057 if (ans <= ~((UV)IV_MAX)+1)
1058 sv_setiv(TARG, ~ans+1);
1060 sv_setnv(TARG, -(NV)ans);
1063 sv_setuv(TARG, ans);
1072 djSP; dATARGET; tryAMAGICbin(repeat,opASSIGN);
1074 register I32 count = POPi;
1075 if (GIMME == G_ARRAY && PL_op->op_private & OPpREPEAT_DOLIST) {
1077 I32 items = SP - MARK;
1080 max = items * count;
1089 repeatcpy((char*)(MARK + items), (char*)MARK,
1090 items * sizeof(SV*), count - 1);
1093 else if (count <= 0)
1096 else { /* Note: mark already snarfed by pp_list */
1101 SvSetSV(TARG, tmpstr);
1102 SvPV_force(TARG, len);
1107 SvGROW(TARG, (count * len) + 1);
1108 repeatcpy(SvPVX(TARG) + len, SvPVX(TARG), len, count - 1);
1109 SvCUR(TARG) *= count;
1111 *SvEND(TARG) = '\0';
1113 (void)SvPOK_only(TARG);
1122 djSP; dATARGET; tryAMAGICbin(subtr,opASSIGN);
1125 SETn( left - right );
1132 djSP; dATARGET; tryAMAGICbin(lshift,opASSIGN);
1135 if (PL_op->op_private & HINT_INTEGER) {
1137 i = BWi(i) << shift;
1151 djSP; dATARGET; tryAMAGICbin(rshift,opASSIGN);
1154 if (PL_op->op_private & HINT_INTEGER) {
1156 i = BWi(i) >> shift;
1170 djSP; tryAMAGICbinSET(lt,0);
1173 SETs(boolSV(TOPn < value));
1180 djSP; tryAMAGICbinSET(gt,0);
1183 SETs(boolSV(TOPn > value));
1190 djSP; tryAMAGICbinSET(le,0);
1193 SETs(boolSV(TOPn <= value));
1200 djSP; tryAMAGICbinSET(ge,0);
1203 SETs(boolSV(TOPn >= value));
1210 djSP; tryAMAGICbinSET(ne,0);
1213 SETs(boolSV(TOPn != value));
1220 djSP; dTARGET; tryAMAGICbin(ncmp,0);
1227 else if (left < right)
1229 else if (left > right)
1242 djSP; tryAMAGICbinSET(slt,0);
1245 int cmp = ((PL_op->op_private & OPpLOCALE)
1246 ? sv_cmp_locale(left, right)
1247 : sv_cmp(left, right));
1248 SETs(boolSV(cmp < 0));
1255 djSP; tryAMAGICbinSET(sgt,0);
1258 int cmp = ((PL_op->op_private & OPpLOCALE)
1259 ? sv_cmp_locale(left, right)
1260 : sv_cmp(left, right));
1261 SETs(boolSV(cmp > 0));
1268 djSP; tryAMAGICbinSET(sle,0);
1271 int cmp = ((PL_op->op_private & OPpLOCALE)
1272 ? sv_cmp_locale(left, right)
1273 : sv_cmp(left, right));
1274 SETs(boolSV(cmp <= 0));
1281 djSP; tryAMAGICbinSET(sge,0);
1284 int cmp = ((PL_op->op_private & OPpLOCALE)
1285 ? sv_cmp_locale(left, right)
1286 : sv_cmp(left, right));
1287 SETs(boolSV(cmp >= 0));
1294 djSP; tryAMAGICbinSET(seq,0);
1297 SETs(boolSV(sv_eq(left, right)));
1304 djSP; tryAMAGICbinSET(sne,0);
1307 SETs(boolSV(!sv_eq(left, right)));
1314 djSP; dTARGET; tryAMAGICbin(scmp,0);
1317 int cmp = ((PL_op->op_private & OPpLOCALE)
1318 ? sv_cmp_locale(left, right)
1319 : sv_cmp(left, right));
1327 djSP; dATARGET; tryAMAGICbin(band,opASSIGN);
1330 if (SvNIOKp(left) || SvNIOKp(right)) {
1331 if (PL_op->op_private & HINT_INTEGER) {
1332 IBW value = SvIV(left) & SvIV(right);
1336 UBW value = SvUV(left) & SvUV(right);
1341 do_vop(PL_op->op_type, TARG, left, right);
1350 djSP; dATARGET; tryAMAGICbin(bxor,opASSIGN);
1353 if (SvNIOKp(left) || SvNIOKp(right)) {
1354 if (PL_op->op_private & HINT_INTEGER) {
1355 IBW value = (USE_LEFT(left) ? SvIV(left) : 0) ^ SvIV(right);
1359 UBW value = (USE_LEFT(left) ? SvUV(left) : 0) ^ SvUV(right);
1364 do_vop(PL_op->op_type, TARG, left, right);
1373 djSP; dATARGET; tryAMAGICbin(bor,opASSIGN);
1376 if (SvNIOKp(left) || SvNIOKp(right)) {
1377 if (PL_op->op_private & HINT_INTEGER) {
1378 IBW value = (USE_LEFT(left) ? SvIV(left) : 0) | SvIV(right);
1382 UBW value = (USE_LEFT(left) ? SvUV(left) : 0) | SvUV(right);
1387 do_vop(PL_op->op_type, TARG, left, right);
1396 djSP; dTARGET; tryAMAGICun(neg);
1401 if (SvIOKp(sv) && !SvNOKp(sv) && !SvPOKp(sv) && SvIVX(sv) != IV_MIN)
1403 else if (SvNIOKp(sv))
1405 else if (SvPOKp(sv)) {
1407 char *s = SvPV(sv, len);
1408 if (isIDFIRST(*s)) {
1409 sv_setpvn(TARG, "-", 1);
1412 else if (*s == '+' || *s == '-') {
1414 *SvPV_force(TARG, len) = *s == '-' ? '+' : '-';
1416 else if (IN_UTF8 && *(U8*)s >= 0xc0 && isIDFIRST_utf8((U8*)s)) {
1417 sv_setpvn(TARG, "-", 1);
1421 sv_setnv(TARG, -SvNV(sv));
1432 djSP; tryAMAGICunSET(not);
1433 *PL_stack_sp = boolSV(!SvTRUE(*PL_stack_sp));
1439 djSP; dTARGET; tryAMAGICun(compl);
1443 if (PL_op->op_private & HINT_INTEGER) {
1444 IBW value = ~SvIV(sv);
1448 UBW value = ~SvUV(sv);
1453 register char *tmps;
1454 register long *tmpl;
1459 tmps = SvPV_force(TARG, len);
1462 for ( ; anum && (unsigned long)tmps % sizeof(long); anum--, tmps++)
1465 for ( ; anum >= sizeof(long); anum -= sizeof(long), tmpl++)
1469 for ( ; anum > 0; anum--, tmps++)
1478 /* integer versions of some of the above */
1482 djSP; dATARGET; tryAMAGICbin(mult,opASSIGN);
1485 SETi( left * right );
1492 djSP; dATARGET; tryAMAGICbin(div,opASSIGN);
1496 DIE(aTHX_ "Illegal division by zero");
1497 value = POPi / value;
1505 djSP; dATARGET; tryAMAGICbin(modulo,opASSIGN);
1509 DIE(aTHX_ "Illegal modulus zero");
1510 SETi( left % right );
1517 djSP; dATARGET; tryAMAGICbin(add,opASSIGN);
1520 SETi( left + right );
1527 djSP; dATARGET; tryAMAGICbin(subtr,opASSIGN);
1530 SETi( left - right );
1537 djSP; tryAMAGICbinSET(lt,0);
1540 SETs(boolSV(left < right));
1547 djSP; tryAMAGICbinSET(gt,0);
1550 SETs(boolSV(left > right));
1557 djSP; tryAMAGICbinSET(le,0);
1560 SETs(boolSV(left <= right));
1567 djSP; tryAMAGICbinSET(ge,0);
1570 SETs(boolSV(left >= right));
1577 djSP; tryAMAGICbinSET(eq,0);
1580 SETs(boolSV(left == right));
1587 djSP; tryAMAGICbinSET(ne,0);
1590 SETs(boolSV(left != right));
1597 djSP; dTARGET; tryAMAGICbin(ncmp,0);
1604 else if (left < right)
1615 djSP; dTARGET; tryAMAGICun(neg);
1620 /* High falutin' math. */
1624 djSP; dTARGET; tryAMAGICbin(atan2,0);
1627 SETn(Perl_atan2(left, right));
1634 djSP; dTARGET; tryAMAGICun(sin);
1638 value = Perl_sin(value);
1646 djSP; dTARGET; tryAMAGICun(cos);
1650 value = Perl_cos(value);
1656 /* Support Configure command-line overrides for rand() functions.
1657 After 5.005, perhaps we should replace this by Configure support
1658 for drand48(), random(), or rand(). For 5.005, though, maintain
1659 compatibility by calling rand() but allow the user to override it.
1660 See INSTALL for details. --Andy Dougherty 15 July 1998
1662 /* Now it's after 5.005, and Configure supports drand48() and random(),
1663 in addition to rand(). So the overrides should not be needed any more.
1664 --Jarkko Hietaniemi 27 September 1998
1667 #ifndef HAS_DRAND48_PROTO
1668 extern double drand48 (void);
1681 if (!PL_srand_called) {
1682 (void)seedDrand01((Rand_seed_t)seed());
1683 PL_srand_called = TRUE;
1698 (void)seedDrand01((Rand_seed_t)anum);
1699 PL_srand_called = TRUE;
1708 * This is really just a quick hack which grabs various garbage
1709 * values. It really should be a real hash algorithm which
1710 * spreads the effect of every input bit onto every output bit,
1711 * if someone who knows about such things would bother to write it.
1712 * Might be a good idea to add that function to CORE as well.
1713 * No numbers below come from careful analysis or anything here,
1714 * except they are primes and SEED_C1 > 1E6 to get a full-width
1715 * value from (tv_sec * SEED_C1 + tv_usec). The multipliers should
1716 * probably be bigger too.
1719 # define SEED_C1 1000003
1720 #define SEED_C4 73819
1722 # define SEED_C1 25747
1723 #define SEED_C4 20639
1727 #define SEED_C5 26107
1730 #ifndef PERL_NO_DEV_RANDOM
1735 # include <starlet.h>
1736 /* when[] = (low 32 bits, high 32 bits) of time since epoch
1737 * in 100-ns units, typically incremented ever 10 ms. */
1738 unsigned int when[2];
1740 # ifdef HAS_GETTIMEOFDAY
1741 struct timeval when;
1747 /* This test is an escape hatch, this symbol isn't set by Configure. */
1748 #ifndef PERL_NO_DEV_RANDOM
1749 #ifndef PERL_RANDOM_DEVICE
1750 /* /dev/random isn't used by default because reads from it will block
1751 * if there isn't enough entropy available. You can compile with
1752 * PERL_RANDOM_DEVICE to it if you'd prefer Perl to block until there
1753 * is enough real entropy to fill the seed. */
1754 # define PERL_RANDOM_DEVICE "/dev/urandom"
1756 fd = PerlLIO_open(PERL_RANDOM_DEVICE, 0);
1758 if (PerlLIO_read(fd, &u, sizeof u) != sizeof u)
1767 _ckvmssts(sys$gettim(when));
1768 u = (U32)SEED_C1 * when[0] + (U32)SEED_C2 * when[1];
1770 # ifdef HAS_GETTIMEOFDAY
1771 gettimeofday(&when,(struct timezone *) 0);
1772 u = (U32)SEED_C1 * when.tv_sec + (U32)SEED_C2 * when.tv_usec;
1775 u = (U32)SEED_C1 * when;
1778 u += SEED_C3 * (U32)getpid();
1779 u += SEED_C4 * (U32)(UV)PL_stack_sp;
1780 #ifndef PLAN9 /* XXX Plan9 assembler chokes on this; fix needed */
1781 u += SEED_C5 * (U32)(UV)&when;
1788 djSP; dTARGET; tryAMAGICun(exp);
1792 value = Perl_exp(value);
1800 djSP; dTARGET; tryAMAGICun(log);
1805 RESTORE_NUMERIC_STANDARD();
1806 DIE(aTHX_ "Can't take log of %g", value);
1808 value = Perl_log(value);
1816 djSP; dTARGET; tryAMAGICun(sqrt);
1821 RESTORE_NUMERIC_STANDARD();
1822 DIE(aTHX_ "Can't take sqrt of %g", value);
1824 value = Perl_sqrt(value);
1837 if (SvIOKp(TOPs) && !SvNOKp(TOPs) && !SvPOKp(TOPs)) {
1843 (void)Perl_modf(value, &value);
1845 (void)Perl_modf(-value, &value);
1860 djSP; dTARGET; tryAMAGICun(abs);
1865 if (SvIOKp(TOPs) && !SvNOKp(TOPs) && !SvPOKp(TOPs) &&
1866 (iv = SvIVX(TOPs)) != IV_MIN) {
1888 XPUSHu(scan_hex(tmps, 99, &argtype));
1901 while (*tmps && isSPACE(*tmps))
1906 value = scan_hex(++tmps, 99, &argtype);
1907 else if (*tmps == 'b')
1908 value = scan_bin(++tmps, 99, &argtype);
1910 value = scan_oct(tmps, 99, &argtype);
1922 SETi( sv_len_utf8(TOPs) );
1926 SETi( sv_len(TOPs) );
1940 I32 lvalue = PL_op->op_flags & OPf_MOD;
1942 I32 arybase = PL_curcop->cop_arybase;
1946 SvTAINTED_off(TARG); /* decontaminate */
1950 repl = SvPV(sv, repl_len);
1957 tmps = SvPV(sv, curlen);
1959 utfcurlen = sv_len_utf8(sv);
1960 if (utfcurlen == curlen)
1968 if (pos >= arybase) {
1986 else if (len >= 0) {
1988 if (rem > (I32)curlen)
2002 if (ckWARN(WARN_SUBSTR) || lvalue || repl)
2003 Perl_warner(aTHX_ WARN_SUBSTR, "substr outside of string");
2008 sv_pos_u2b(sv, &pos, &rem);
2010 sv_setpvn(TARG, tmps, rem);
2011 if (lvalue) { /* it's an lvalue! */
2012 if (!SvGMAGICAL(sv)) {
2016 if (ckWARN(WARN_SUBSTR))
2017 Perl_warner(aTHX_ WARN_SUBSTR,
2018 "Attempt to use reference as lvalue in substr");
2020 if (SvOK(sv)) /* is it defined ? */
2021 (void)SvPOK_only(sv);
2023 sv_setpvn(sv,"",0); /* avoid lexical reincarnation */
2026 if (SvTYPE(TARG) < SVt_PVLV) {
2027 sv_upgrade(TARG, SVt_PVLV);
2028 sv_magic(TARG, Nullsv, 'x', Nullch, 0);
2032 if (LvTARG(TARG) != sv) {
2034 SvREFCNT_dec(LvTARG(TARG));
2035 LvTARG(TARG) = SvREFCNT_inc(sv);
2037 LvTARGOFF(TARG) = pos;
2038 LvTARGLEN(TARG) = rem;
2041 sv_insert(sv, pos, rem, repl, repl_len);
2044 PUSHs(TARG); /* avoid SvSETMAGIC here */
2051 register I32 size = POPi;
2052 register I32 offset = POPi;
2053 register SV *src = POPs;
2054 I32 lvalue = PL_op->op_flags & OPf_MOD;
2056 unsigned char *s = (unsigned char*)SvPV(src, srclen);
2057 unsigned long retnum;
2060 SvTAINTED_off(TARG); /* decontaminate */
2061 offset *= size; /* turn into bit offset */
2062 len = (offset + size + 7) / 8;
2063 if (offset < 0 || size < 1)
2066 if (lvalue) { /* it's an lvalue! */
2067 if (SvTYPE(TARG) < SVt_PVLV) {
2068 sv_upgrade(TARG, SVt_PVLV);
2069 sv_magic(TARG, Nullsv, 'v', Nullch, 0);
2073 if (LvTARG(TARG) != src) {
2075 SvREFCNT_dec(LvTARG(TARG));
2076 LvTARG(TARG) = SvREFCNT_inc(src);
2078 LvTARGOFF(TARG) = offset;
2079 LvTARGLEN(TARG) = size;
2087 if (offset >= srclen)
2090 retnum = (unsigned long) s[offset] << 8;
2092 else if (size == 32) {
2093 if (offset >= srclen)
2095 else if (offset + 1 >= srclen)
2096 retnum = (unsigned long) s[offset] << 24;
2097 else if (offset + 2 >= srclen)
2098 retnum = ((unsigned long) s[offset] << 24) +
2099 ((unsigned long) s[offset + 1] << 16);
2101 retnum = ((unsigned long) s[offset] << 24) +
2102 ((unsigned long) s[offset + 1] << 16) +
2103 (s[offset + 2] << 8);
2108 retnum = (s[offset >> 3] >> (offset & 7)) & ((1 << size) - 1);
2113 else if (size == 16)
2114 retnum = ((unsigned long) s[offset] << 8) + s[offset+1];
2115 else if (size == 32)
2116 retnum = ((unsigned long) s[offset] << 24) +
2117 ((unsigned long) s[offset + 1] << 16) +
2118 (s[offset + 2] << 8) + s[offset+3];
2122 sv_setuv(TARG, (UV)retnum);
2137 I32 arybase = PL_curcop->cop_arybase;
2142 offset = POPi - arybase;
2145 tmps = SvPV(big, biglen);
2146 if (IN_UTF8 && offset > 0)
2147 sv_pos_u2b(big, &offset, 0);
2150 else if (offset > biglen)
2152 if (!(tmps2 = fbm_instr((unsigned char*)tmps + offset,
2153 (unsigned char*)tmps + biglen, little, 0)))
2156 retval = tmps2 - tmps;
2157 if (IN_UTF8 && retval > 0)
2158 sv_pos_b2u(big, &retval);
2159 PUSHi(retval + arybase);
2174 I32 arybase = PL_curcop->cop_arybase;
2180 tmps2 = SvPV(little, llen);
2181 tmps = SvPV(big, blen);
2185 if (IN_UTF8 && offset > 0)
2186 sv_pos_u2b(big, &offset, 0);
2187 offset = offset - arybase + llen;
2191 else if (offset > blen)
2193 if (!(tmps2 = rninstr(tmps, tmps + offset,
2194 tmps2, tmps2 + llen)))
2197 retval = tmps2 - tmps;
2198 if (IN_UTF8 && retval > 0)
2199 sv_pos_b2u(big, &retval);
2200 PUSHi(retval + arybase);
2206 djSP; dMARK; dORIGMARK; dTARGET;
2207 do_sprintf(TARG, SP-MARK, MARK+1);
2208 TAINT_IF(SvTAINTED(TARG));
2219 U8 *tmps = (U8*)POPpx;
2222 if (IN_UTF8 && (*tmps & 0x80))
2223 value = utf8_to_uv(tmps, &retlen);
2225 value = (UV)(*tmps & 255);
2236 (void)SvUPGRADE(TARG,SVt_PV);
2238 if (IN_UTF8 && value >= 128) {
2241 tmps = (char*)uv_to_utf8((U8*)tmps, (UV)value);
2242 SvCUR_set(TARG, tmps - SvPVX(TARG));
2244 (void)SvPOK_only(TARG);
2254 (void)SvPOK_only(TARG);
2261 djSP; dTARGET; dPOPTOPssrl;
2264 char *tmps = SvPV(left, n_a);
2266 sv_setpv(TARG, fcrypt(tmps, SvPV(right, n_a)));
2268 sv_setpv(TARG, PerlProc_crypt(tmps, SvPV(right, n_a)));
2272 "The crypt() function is unimplemented due to excessive paranoia.");
2285 if (IN_UTF8 && (s = (U8*)SvPV(sv, slen)) && slen && (*s & 0xc0) == 0xc0) {
2289 UV uv = utf8_to_uv(s, &ulen);
2291 if (PL_op->op_private & OPpLOCALE) {
2294 uv = toTITLE_LC_uni(uv);
2297 uv = toTITLE_utf8(s);
2299 tend = uv_to_utf8(tmpbuf, uv);
2301 if (!SvPADTMP(sv) || tend - tmpbuf != ulen) {
2303 sv_setpvn(TARG, (char*)tmpbuf, tend - tmpbuf);
2304 sv_catpvn(TARG, (char*)(s + ulen), slen - ulen);
2308 s = (U8*)SvPV_force(sv, slen);
2309 Copy(tmpbuf, s, ulen, U8);
2313 if (!SvPADTMP(sv)) {
2319 s = (U8*)SvPV_force(sv, slen);
2321 if (PL_op->op_private & OPpLOCALE) {
2324 *s = toUPPER_LC(*s);
2342 if (IN_UTF8 && (s = (U8*)SvPV(sv, slen)) && slen && (*s & 0xc0) == 0xc0) {
2346 UV uv = utf8_to_uv(s, &ulen);
2348 if (PL_op->op_private & OPpLOCALE) {
2351 uv = toLOWER_LC_uni(uv);
2354 uv = toLOWER_utf8(s);
2356 tend = uv_to_utf8(tmpbuf, uv);
2358 if (!SvPADTMP(sv) || tend - tmpbuf != ulen) {
2360 sv_setpvn(TARG, (char*)tmpbuf, tend - tmpbuf);
2361 sv_catpvn(TARG, (char*)(s + ulen), slen - ulen);
2365 s = (U8*)SvPV_force(sv, slen);
2366 Copy(tmpbuf, s, ulen, U8);
2370 if (!SvPADTMP(sv)) {
2376 s = (U8*)SvPV_force(sv, slen);
2378 if (PL_op->op_private & OPpLOCALE) {
2381 *s = toLOWER_LC(*s);
2406 s = (U8*)SvPV(sv,len);
2408 sv_setpvn(TARG, "", 0);
2412 (void)SvUPGRADE(TARG, SVt_PV);
2413 SvGROW(TARG, (len * 2) + 1);
2414 (void)SvPOK_only(TARG);
2415 d = (U8*)SvPVX(TARG);
2417 if (PL_op->op_private & OPpLOCALE) {
2421 d = uv_to_utf8(d, toUPPER_LC_uni( utf8_to_uv(s, &ulen)));
2427 d = uv_to_utf8(d, toUPPER_utf8( s ));
2432 SvCUR_set(TARG, d - (U8*)SvPVX(TARG));
2437 if (!SvPADTMP(sv)) {
2443 s = (U8*)SvPV_force(sv, len);
2445 register U8 *send = s + len;
2447 if (PL_op->op_private & OPpLOCALE) {
2450 for (; s < send; s++)
2451 *s = toUPPER_LC(*s);
2454 for (; s < send; s++)
2477 s = (U8*)SvPV(sv,len);
2479 sv_setpvn(TARG, "", 0);
2483 (void)SvUPGRADE(TARG, SVt_PV);
2484 SvGROW(TARG, (len * 2) + 1);
2485 (void)SvPOK_only(TARG);
2486 d = (U8*)SvPVX(TARG);
2488 if (PL_op->op_private & OPpLOCALE) {
2492 d = uv_to_utf8(d, toLOWER_LC_uni( utf8_to_uv(s, &ulen)));
2498 d = uv_to_utf8(d, toLOWER_utf8(s));
2503 SvCUR_set(TARG, d - (U8*)SvPVX(TARG));
2508 if (!SvPADTMP(sv)) {
2515 s = (U8*)SvPV_force(sv, len);
2517 register U8 *send = s + len;
2519 if (PL_op->op_private & OPpLOCALE) {
2522 for (; s < send; s++)
2523 *s = toLOWER_LC(*s);
2526 for (; s < send; s++)
2541 register char *s = SvPV(sv,len);
2545 (void)SvUPGRADE(TARG, SVt_PV);
2546 SvGROW(TARG, (len * 2) + 1);
2551 STRLEN ulen = UTF8SKIP(s);
2574 SvCUR_set(TARG, d - SvPVX(TARG));
2575 (void)SvPOK_only(TARG);
2578 sv_setpvn(TARG, s, len);
2580 if (SvSMAGICAL(TARG))
2589 djSP; dMARK; dORIGMARK;
2591 register AV* av = (AV*)POPs;
2592 register I32 lval = PL_op->op_flags & OPf_MOD;
2593 I32 arybase = PL_curcop->cop_arybase;
2596 if (SvTYPE(av) == SVt_PVAV) {
2597 if (lval && PL_op->op_private & OPpLVAL_INTRO) {
2599 for (svp = MARK + 1; svp <= SP; svp++) {
2604 if (max > AvMAX(av))
2607 while (++MARK <= SP) {
2608 elem = SvIVx(*MARK);
2612 svp = av_fetch(av, elem, lval);
2614 if (!svp || *svp == &PL_sv_undef)
2615 DIE(aTHX_ PL_no_aelem, elem);
2616 if (PL_op->op_private & OPpLVAL_INTRO)
2617 save_aelem(av, elem, svp);
2619 *MARK = svp ? *svp : &PL_sv_undef;
2622 if (GIMME != G_ARRAY) {
2630 /* Associative arrays. */
2635 HV *hash = (HV*)POPs;
2637 I32 gimme = GIMME_V;
2638 I32 realhv = (SvTYPE(hash) == SVt_PVHV);
2641 /* might clobber stack_sp */
2642 entry = realhv ? hv_iternext(hash) : avhv_iternext((AV*)hash);
2647 PUSHs(hv_iterkeysv(entry)); /* won't clobber stack_sp */
2648 if (gimme == G_ARRAY) {
2650 /* might clobber stack_sp */
2651 sv_setsv(TARG, realhv ?
2652 hv_iterval(hash, entry) : avhv_iterval((AV*)hash, entry));
2657 else if (gimme == G_SCALAR)
2676 I32 gimme = GIMME_V;
2677 I32 discard = (gimme == G_VOID) ? G_DISCARD : 0;
2681 if (PL_op->op_private & OPpSLICE) {
2685 hvtype = SvTYPE(hv);
2686 while (++MARK <= SP) {
2687 if (hvtype == SVt_PVHV)
2688 sv = hv_delete_ent(hv, *MARK, discard, 0);
2690 DIE(aTHX_ "Not a HASH reference");
2691 *MARK = sv ? sv : &PL_sv_undef;
2695 else if (gimme == G_SCALAR) {
2704 if (SvTYPE(hv) == SVt_PVHV)
2705 sv = hv_delete_ent(hv, keysv, discard, 0);
2707 DIE(aTHX_ "Not a HASH reference");
2721 if (SvTYPE(hv) == SVt_PVHV) {
2722 if (hv_exists_ent(hv, tmpsv, 0))
2725 else if (SvTYPE(hv) == SVt_PVAV) {
2726 if (avhv_exists_ent((AV*)hv, tmpsv, 0))
2730 DIE(aTHX_ "Not a HASH reference");
2737 djSP; dMARK; dORIGMARK;
2738 register HV *hv = (HV*)POPs;
2739 register I32 lval = PL_op->op_flags & OPf_MOD;
2740 I32 realhv = (SvTYPE(hv) == SVt_PVHV);
2742 if (!realhv && PL_op->op_private & OPpLVAL_INTRO)
2743 DIE(aTHX_ "Can't localize pseudo-hash element");
2745 if (realhv || SvTYPE(hv) == SVt_PVAV) {
2746 while (++MARK <= SP) {
2750 HE *he = hv_fetch_ent(hv, keysv, lval, 0);
2751 svp = he ? &HeVAL(he) : 0;
2754 svp = avhv_fetch_ent((AV*)hv, keysv, lval, 0);
2757 if (!svp || *svp == &PL_sv_undef) {
2759 DIE(aTHX_ PL_no_helem, SvPV(keysv, n_a));
2761 if (PL_op->op_private & OPpLVAL_INTRO)
2762 save_helem(hv, keysv, svp);
2764 *MARK = svp ? *svp : &PL_sv_undef;
2767 if (GIMME != G_ARRAY) {
2775 /* List operators. */
2780 if (GIMME != G_ARRAY) {
2782 *MARK = *SP; /* unwanted list, return last item */
2784 *MARK = &PL_sv_undef;
2793 SV **lastrelem = PL_stack_sp;
2794 SV **lastlelem = PL_stack_base + POPMARK;
2795 SV **firstlelem = PL_stack_base + POPMARK + 1;
2796 register SV **firstrelem = lastlelem + 1;
2797 I32 arybase = PL_curcop->cop_arybase;
2798 I32 lval = PL_op->op_flags & OPf_MOD;
2799 I32 is_something_there = lval;
2801 register I32 max = lastrelem - lastlelem;
2802 register SV **lelem;
2805 if (GIMME != G_ARRAY) {
2806 ix = SvIVx(*lastlelem);
2811 if (ix < 0 || ix >= max)
2812 *firstlelem = &PL_sv_undef;
2814 *firstlelem = firstrelem[ix];
2820 SP = firstlelem - 1;
2824 for (lelem = firstlelem; lelem <= lastlelem; lelem++) {
2830 if (ix < 0 || ix >= max)
2831 *lelem = &PL_sv_undef;
2833 is_something_there = TRUE;
2834 if (!(*lelem = firstrelem[ix]))
2835 *lelem = &PL_sv_undef;
2838 if (is_something_there)
2841 SP = firstlelem - 1;
2847 djSP; dMARK; dORIGMARK;
2848 I32 items = SP - MARK;
2849 SV *av = sv_2mortal((SV*)av_make(items, MARK+1));
2850 SP = ORIGMARK; /* av_make() might realloc stack_sp */
2857 djSP; dMARK; dORIGMARK;
2858 HV* hv = (HV*)sv_2mortal((SV*)newHV());
2862 SV *val = NEWSV(46, 0);
2864 sv_setsv(val, *++MARK);
2865 else if (ckWARN(WARN_UNSAFE))
2866 Perl_warner(aTHX_ WARN_UNSAFE, "Odd number of elements in hash assignment");
2867 (void)hv_store_ent(hv,key,val,0);
2876 djSP; dMARK; dORIGMARK;
2877 register AV *ary = (AV*)*++MARK;
2881 register I32 offset;
2882 register I32 length;
2889 if (mg = SvTIED_mg((SV*)ary, 'P')) {
2890 *MARK-- = SvTIED_obj((SV*)ary, mg);
2894 call_method("SPLICE",GIMME_V);
2903 offset = i = SvIVx(*MARK);
2905 offset += AvFILLp(ary) + 1;
2907 offset -= PL_curcop->cop_arybase;
2909 DIE(aTHX_ PL_no_aelem, i);
2911 length = SvIVx(*MARK++);
2913 length += AvFILLp(ary) - offset + 1;
2919 length = AvMAX(ary) + 1; /* close enough to infinity */
2923 length = AvMAX(ary) + 1;
2925 if (offset > AvFILLp(ary) + 1)
2926 offset = AvFILLp(ary) + 1;
2927 after = AvFILLp(ary) + 1 - (offset + length);
2928 if (after < 0) { /* not that much array */
2929 length += after; /* offset+length now in array */
2935 /* At this point, MARK .. SP-1 is our new LIST */
2938 diff = newlen - length;
2939 if (newlen && !AvREAL(ary) && AvREIFY(ary))
2942 if (diff < 0) { /* shrinking the area */
2944 New(451, tmparyval, newlen, SV*); /* so remember insertion */
2945 Copy(MARK, tmparyval, newlen, SV*);
2948 MARK = ORIGMARK + 1;
2949 if (GIMME == G_ARRAY) { /* copy return vals to stack */
2950 MEXTEND(MARK, length);
2951 Copy(AvARRAY(ary)+offset, MARK, length, SV*);
2953 EXTEND_MORTAL(length);
2954 for (i = length, dst = MARK; i; i--) {
2955 sv_2mortal(*dst); /* free them eventualy */
2962 *MARK = AvARRAY(ary)[offset+length-1];
2965 for (i = length - 1, dst = &AvARRAY(ary)[offset]; i > 0; i--)
2966 SvREFCNT_dec(*dst++); /* free them now */
2969 AvFILLp(ary) += diff;
2971 /* pull up or down? */
2973 if (offset < after) { /* easier to pull up */
2974 if (offset) { /* esp. if nothing to pull */
2975 src = &AvARRAY(ary)[offset-1];
2976 dst = src - diff; /* diff is negative */
2977 for (i = offset; i > 0; i--) /* can't trust Copy */
2981 SvPVX(ary) = (char*)(AvARRAY(ary) - diff); /* diff is negative */
2985 if (after) { /* anything to pull down? */
2986 src = AvARRAY(ary) + offset + length;
2987 dst = src + diff; /* diff is negative */
2988 Move(src, dst, after, SV*);
2990 dst = &AvARRAY(ary)[AvFILLp(ary)+1];
2991 /* avoid later double free */
2995 dst[--i] = &PL_sv_undef;
2998 for (src = tmparyval, dst = AvARRAY(ary) + offset;
3000 *dst = NEWSV(46, 0);
3001 sv_setsv(*dst++, *src++);
3003 Safefree(tmparyval);
3006 else { /* no, expanding (or same) */
3008 New(452, tmparyval, length, SV*); /* so remember deletion */
3009 Copy(AvARRAY(ary)+offset, tmparyval, length, SV*);
3012 if (diff > 0) { /* expanding */
3014 /* push up or down? */
3016 if (offset < after && diff <= AvARRAY(ary) - AvALLOC(ary)) {
3020 Move(src, dst, offset, SV*);
3022 SvPVX(ary) = (char*)(AvARRAY(ary) - diff);/* diff is positive */
3024 AvFILLp(ary) += diff;
3027 if (AvFILLp(ary) + diff >= AvMAX(ary)) /* oh, well */
3028 av_extend(ary, AvFILLp(ary) + diff);
3029 AvFILLp(ary) += diff;
3032 dst = AvARRAY(ary) + AvFILLp(ary);
3034 for (i = after; i; i--) {
3041 for (src = MARK, dst = AvARRAY(ary) + offset; newlen; newlen--) {
3042 *dst = NEWSV(46, 0);
3043 sv_setsv(*dst++, *src++);
3045 MARK = ORIGMARK + 1;
3046 if (GIMME == G_ARRAY) { /* copy return vals to stack */
3048 Copy(tmparyval, MARK, length, SV*);
3050 EXTEND_MORTAL(length);
3051 for (i = length, dst = MARK; i; i--) {
3052 sv_2mortal(*dst); /* free them eventualy */
3056 Safefree(tmparyval);
3060 else if (length--) {
3061 *MARK = tmparyval[length];
3064 while (length-- > 0)
3065 SvREFCNT_dec(tmparyval[length]);
3067 Safefree(tmparyval);
3070 *MARK = &PL_sv_undef;
3078 djSP; dMARK; dORIGMARK; dTARGET;
3079 register AV *ary = (AV*)*++MARK;
3080 register SV *sv = &PL_sv_undef;
3083 if (mg = SvTIED_mg((SV*)ary, 'P')) {
3084 *MARK-- = SvTIED_obj((SV*)ary, mg);
3088 call_method("PUSH",G_SCALAR|G_DISCARD);
3093 /* Why no pre-extend of ary here ? */
3094 for (++MARK; MARK <= SP; MARK++) {
3097 sv_setsv(sv, *MARK);
3102 PUSHi( AvFILL(ary) + 1 );
3110 SV *sv = av_pop(av);
3112 (void)sv_2mortal(sv);
3121 SV *sv = av_shift(av);
3126 (void)sv_2mortal(sv);
3133 djSP; dMARK; dORIGMARK; dTARGET;
3134 register AV *ary = (AV*)*++MARK;
3139 if (mg = SvTIED_mg((SV*)ary, 'P')) {
3140 *MARK-- = SvTIED_obj((SV*)ary, mg);
3144 call_method("UNSHIFT",G_SCALAR|G_DISCARD);
3149 av_unshift(ary, SP - MARK);
3152 sv_setsv(sv, *++MARK);
3153 (void)av_store(ary, i++, sv);
3157 PUSHi( AvFILL(ary) + 1 );
3167 if (GIMME == G_ARRAY) {
3178 register char *down;
3184 do_join(TARG, &PL_sv_no, MARK, SP);
3186 sv_setsv(TARG, (SP > MARK) ? *SP : DEFSV);
3187 up = SvPV_force(TARG, len);
3189 if (IN_UTF8) { /* first reverse each character */
3190 U8* s = (U8*)SvPVX(TARG);
3191 U8* send = (U8*)(s + len);
3200 down = (char*)(s - 1);
3201 if (s > send || !((*down & 0xc0) == 0x80)) {
3202 if (ckWARN_d(WARN_UTF8))
3203 Perl_warner(aTHX_ WARN_UTF8,
3204 "Malformed UTF-8 character");
3216 down = SvPVX(TARG) + len - 1;
3222 (void)SvPOK_only(TARG);
3231 S_mul128(pTHX_ SV *sv, U8 m)
3234 char *s = SvPV(sv, len);
3238 if (!strnEQ(s, "0000", 4)) { /* need to grow sv */
3239 SV *tmpNew = newSVpvn("0000000000", 10);
3241 sv_catsv(tmpNew, sv);
3242 SvREFCNT_dec(sv); /* free old sv */
3247 while (!*t) /* trailing '\0'? */
3250 i = ((*t - '0') << 7) + m;
3251 *(t--) = '0' + (i % 10);
3257 /* Explosives and implosives. */
3259 #if 'I' == 73 && 'J' == 74
3260 /* On an ASCII/ISO kind of system */
3261 #define ISUUCHAR(ch) ((ch) >= ' ' && (ch) < 'a')
3264 Some other sort of character set - use memchr() so we don't match
3267 #define ISUUCHAR(ch) (memchr(PL_uuemap, (ch), sizeof(PL_uuemap)-1) || (ch) == ' ')
3275 I32 gimme = GIMME_V;
3279 register char *pat = SvPV(left, llen);
3280 register char *s = SvPV(right, rlen);
3281 char *strend = s + rlen;
3283 register char *patend = pat + llen;
3288 /* These must not be in registers: */
3305 register U32 culong;
3308 #ifdef PERL_NATINT_PACK
3309 int natint; /* native integer */
3310 int unatint; /* unsigned native integer */
3313 if (gimme != G_ARRAY) { /* arrange to do first one only */
3315 for (patend = pat; !isALPHA(*patend) || *patend == 'x'; patend++) ;
3316 if (strchr("aAZbBhHP", *patend) || *pat == '%') {
3318 while (isDIGIT(*patend) || *patend == '*')
3324 while (pat < patend) {
3326 datumtype = *pat++ & 0xFF;
3327 #ifdef PERL_NATINT_PACK
3330 if (isSPACE(datumtype))
3333 char *natstr = "sSiIlL";
3335 if (strchr(natstr, datumtype)) {
3336 #ifdef PERL_NATINT_PACK
3342 Perl_croak(aTHX_ "'!' allowed only after types %s", natstr);
3346 else if (*pat == '*') {
3347 len = strend - strbeg; /* long enough */
3350 else if (isDIGIT(*pat)) {
3352 while (isDIGIT(*pat))
3353 len = (len * 10) + (*pat++ - '0');
3356 len = (datumtype != '@');
3359 Perl_croak(aTHX_ "Invalid type in unpack: '%c'", (int)datumtype);
3360 case ',': /* grandfather in commas but with a warning */
3361 if (commas++ == 0 && ckWARN(WARN_UNSAFE))
3362 Perl_warner(aTHX_ WARN_UNSAFE, "Invalid type in unpack: '%c'", (int)datumtype);
3365 if (len == 1 && pat[-1] != '1')
3374 if (len > strend - strbeg)
3375 DIE(aTHX_ "@ outside of string");
3379 if (len > s - strbeg)
3380 DIE(aTHX_ "X outside of string");
3384 if (len > strend - s)
3385 DIE(aTHX_ "x outside of string");
3391 if (len > strend - s)
3394 goto uchar_checksum;
3395 sv = NEWSV(35, len);
3396 sv_setpvn(sv, s, len);
3398 if (datumtype == 'A' || datumtype == 'Z') {
3399 aptr = s; /* borrow register */
3400 if (datumtype == 'Z') { /* 'Z' strips stuff after first null */
3405 else { /* 'A' strips both nulls and spaces */
3406 s = SvPVX(sv) + len - 1;
3407 while (s >= SvPVX(sv) && (!*s || isSPACE(*s)))
3411 SvCUR_set(sv, s - SvPVX(sv));
3412 s = aptr; /* unborrow register */
3414 XPUSHs(sv_2mortal(sv));
3418 if (pat[-1] == '*' || len > (strend - s) * 8)
3419 len = (strend - s) * 8;
3422 Newz(601, PL_bitcount, 256, char);
3423 for (bits = 1; bits < 256; bits++) {
3424 if (bits & 1) PL_bitcount[bits]++;
3425 if (bits & 2) PL_bitcount[bits]++;
3426 if (bits & 4) PL_bitcount[bits]++;
3427 if (bits & 8) PL_bitcount[bits]++;
3428 if (bits & 16) PL_bitcount[bits]++;
3429 if (bits & 32) PL_bitcount[bits]++;
3430 if (bits & 64) PL_bitcount[bits]++;
3431 if (bits & 128) PL_bitcount[bits]++;
3435 culong += PL_bitcount[*(unsigned char*)s++];
3440 if (datumtype == 'b') {
3442 if (bits & 1) culong++;
3448 if (bits & 128) culong++;
3455 sv = NEWSV(35, len + 1);
3458 aptr = pat; /* borrow register */
3460 if (datumtype == 'b') {
3462 for (len = 0; len < aint; len++) {
3463 if (len & 7) /*SUPPRESS 595*/
3467 *pat++ = '0' + (bits & 1);
3472 for (len = 0; len < aint; len++) {
3477 *pat++ = '0' + ((bits & 128) != 0);
3481 pat = aptr; /* unborrow register */
3482 XPUSHs(sv_2mortal(sv));
3486 if (pat[-1] == '*' || len > (strend - s) * 2)
3487 len = (strend - s) * 2;
3488 sv = NEWSV(35, len + 1);
3491 aptr = pat; /* borrow register */
3493 if (datumtype == 'h') {
3495 for (len = 0; len < aint; len++) {
3500 *pat++ = PL_hexdigit[bits & 15];
3505 for (len = 0; len < aint; len++) {
3510 *pat++ = PL_hexdigit[(bits >> 4) & 15];
3514 pat = aptr; /* unborrow register */
3515 XPUSHs(sv_2mortal(sv));
3518 if (len > strend - s)
3523 if (aint >= 128) /* fake up signed chars */
3533 if (aint >= 128) /* fake up signed chars */
3536 sv_setiv(sv, (IV)aint);
3537 PUSHs(sv_2mortal(sv));
3542 if (len > strend - s)
3557 sv_setiv(sv, (IV)auint);
3558 PUSHs(sv_2mortal(sv));
3563 if (len > strend - s)
3566 while (len-- > 0 && s < strend) {
3567 auint = utf8_to_uv((U8*)s, &along);
3570 cdouble += (NV)auint;
3578 while (len-- > 0 && s < strend) {
3579 auint = utf8_to_uv((U8*)s, &along);
3582 sv_setuv(sv, (UV)auint);
3583 PUSHs(sv_2mortal(sv));
3588 #if SHORTSIZE == SIZE16
3589 along = (strend - s) / SIZE16;
3591 along = (strend - s) / (natint ? sizeof(short) : SIZE16);
3596 #if SHORTSIZE != SIZE16
3599 COPYNN(s, &ashort, sizeof(short));
3610 #if SHORTSIZE > SIZE16
3622 #if SHORTSIZE != SIZE16
3625 COPYNN(s, &ashort, sizeof(short));
3628 sv_setiv(sv, (IV)ashort);
3629 PUSHs(sv_2mortal(sv));
3637 #if SHORTSIZE > SIZE16
3643 sv_setiv(sv, (IV)ashort);
3644 PUSHs(sv_2mortal(sv));
3652 #if SHORTSIZE == SIZE16
3653 along = (strend - s) / SIZE16;
3655 unatint = natint && datumtype == 'S';
3656 along = (strend - s) / (unatint ? sizeof(unsigned short) : SIZE16);
3661 #if SHORTSIZE != SIZE16
3664 COPYNN(s, &aushort, sizeof(unsigned short));
3665 s += sizeof(unsigned short);
3673 COPY16(s, &aushort);
3676 if (datumtype == 'n')
3677 aushort = PerlSock_ntohs(aushort);
3680 if (datumtype == 'v')
3681 aushort = vtohs(aushort);
3690 #if SHORTSIZE != SIZE16
3693 COPYNN(s, &aushort, sizeof(unsigned short));
3694 s += sizeof(unsigned short);
3696 sv_setiv(sv, (UV)aushort);
3697 PUSHs(sv_2mortal(sv));
3704 COPY16(s, &aushort);
3708 if (datumtype == 'n')
3709 aushort = PerlSock_ntohs(aushort);
3712 if (datumtype == 'v')
3713 aushort = vtohs(aushort);
3715 sv_setiv(sv, (UV)aushort);
3716 PUSHs(sv_2mortal(sv));
3722 along = (strend - s) / sizeof(int);
3727 Copy(s, &aint, 1, int);
3730 cdouble += (NV)aint;
3739 Copy(s, &aint, 1, int);
3743 /* Without the dummy below unpack("i", pack("i",-1))
3744 * return 0xFFffFFff instead of -1 for Digital Unix V4.0
3745 * cc with optimization turned on.
3747 * The bug was detected in
3748 * DEC C V5.8-009 on Digital UNIX V4.0 (Rev. 1091) (V4.0E)
3749 * with optimization (-O4) turned on.
3750 * DEC C V5.2-040 on Digital UNIX V4.0 (Rev. 564) (V4.0B)
3751 * does not have this problem even with -O4.
3753 * This bug was reported as DECC_BUGS 1431
3754 * and tracked internally as GEM_BUGS 7775.
3756 * The bug is fixed in
3757 * Tru64 UNIX V5.0: Compaq C V6.1-006 or later
3758 * UNIX V4.0F support: DEC C V5.9-006 or later
3759 * UNIX V4.0E support: DEC C V5.8-011 or later
3762 * See also few lines later for the same bug.
3765 sv_setiv(sv, (IV)aint) :
3767 sv_setiv(sv, (IV)aint);
3768 PUSHs(sv_2mortal(sv));
3773 along = (strend - s) / sizeof(unsigned int);
3778 Copy(s, &auint, 1, unsigned int);
3779 s += sizeof(unsigned int);
3781 cdouble += (NV)auint;
3790 Copy(s, &auint, 1, unsigned int);
3791 s += sizeof(unsigned int);
3794 /* Without the dummy below unpack("I", pack("I",0xFFFFFFFF))
3795 * returns 1.84467440737096e+19 instead of 0xFFFFFFFF.
3796 * See details few lines earlier. */
3798 sv_setuv(sv, (UV)auint) :
3800 sv_setuv(sv, (UV)auint);
3801 PUSHs(sv_2mortal(sv));
3806 #if LONGSIZE == SIZE32
3807 along = (strend - s) / SIZE32;
3809 along = (strend - s) / (natint ? sizeof(long) : SIZE32);
3814 #if LONGSIZE != SIZE32
3817 COPYNN(s, &along, sizeof(long));
3820 cdouble += (NV)along;
3830 #if LONGSIZE > SIZE32
3831 if (along > 2147483647)
3832 along -= 4294967296;
3836 cdouble += (NV)along;
3845 #if LONGSIZE != SIZE32
3848 COPYNN(s, &along, sizeof(long));
3851 sv_setiv(sv, (IV)along);
3852 PUSHs(sv_2mortal(sv));
3860 #if LONGSIZE > SIZE32
3861 if (along > 2147483647)
3862 along -= 4294967296;
3866 sv_setiv(sv, (IV)along);
3867 PUSHs(sv_2mortal(sv));
3875 #if LONGSIZE == SIZE32
3876 along = (strend - s) / SIZE32;
3878 unatint = natint && datumtype == 'L';
3879 along = (strend - s) / (unatint ? sizeof(unsigned long) : SIZE32);
3884 #if LONGSIZE != SIZE32
3887 COPYNN(s, &aulong, sizeof(unsigned long));
3888 s += sizeof(unsigned long);
3890 cdouble += (NV)aulong;
3902 if (datumtype == 'N')
3903 aulong = PerlSock_ntohl(aulong);
3906 if (datumtype == 'V')
3907 aulong = vtohl(aulong);
3910 cdouble += (NV)aulong;
3919 #if LONGSIZE != SIZE32
3922 COPYNN(s, &aulong, sizeof(unsigned long));
3923 s += sizeof(unsigned long);
3925 sv_setuv(sv, (UV)aulong);
3926 PUSHs(sv_2mortal(sv));
3936 if (datumtype == 'N')
3937 aulong = PerlSock_ntohl(aulong);
3940 if (datumtype == 'V')
3941 aulong = vtohl(aulong);
3944 sv_setuv(sv, (UV)aulong);
3945 PUSHs(sv_2mortal(sv));
3951 along = (strend - s) / sizeof(char*);
3957 if (sizeof(char*) > strend - s)
3960 Copy(s, &aptr, 1, char*);
3966 PUSHs(sv_2mortal(sv));
3976 while ((len > 0) && (s < strend)) {
3977 auv = (auv << 7) | (*s & 0x7f);
3978 if (!(*s++ & 0x80)) {
3982 PUSHs(sv_2mortal(sv));
3986 else if (++bytes >= sizeof(UV)) { /* promote to string */
3990 sv = Perl_newSVpvf(aTHX_ "%.*Vu", (int)TYPE_DIGITS(UV), auv);
3991 while (s < strend) {
3992 sv = mul128(sv, *s & 0x7f);
3993 if (!(*s++ & 0x80)) {
4002 PUSHs(sv_2mortal(sv));
4007 if ((s >= strend) && bytes)
4008 Perl_croak(aTHX_ "Unterminated compressed integer");
4013 if (sizeof(char*) > strend - s)
4016 Copy(s, &aptr, 1, char*);
4021 sv_setpvn(sv, aptr, len);
4022 PUSHs(sv_2mortal(sv));
4026 along = (strend - s) / sizeof(Quad_t);
4032 if (s + sizeof(Quad_t) > strend)
4035 Copy(s, &aquad, 1, Quad_t);
4036 s += sizeof(Quad_t);
4039 if (aquad >= IV_MIN && aquad <= IV_MAX)
4040 sv_setiv(sv, (IV)aquad);
4042 sv_setnv(sv, (NV)aquad);
4043 PUSHs(sv_2mortal(sv));
4047 along = (strend - s) / sizeof(Quad_t);
4053 if (s + sizeof(Uquad_t) > strend)
4056 Copy(s, &auquad, 1, Uquad_t);
4057 s += sizeof(Uquad_t);
4060 if (auquad <= UV_MAX)
4061 sv_setuv(sv, (UV)auquad);
4063 sv_setnv(sv, (NV)auquad);
4064 PUSHs(sv_2mortal(sv));
4068 /* float and double added gnb@melba.bby.oz.au 22/11/89 */
4071 along = (strend - s) / sizeof(float);
4076 Copy(s, &afloat, 1, float);
4085 Copy(s, &afloat, 1, float);
4088 sv_setnv(sv, (NV)afloat);
4089 PUSHs(sv_2mortal(sv));
4095 along = (strend - s) / sizeof(double);
4100 Copy(s, &adouble, 1, double);
4101 s += sizeof(double);
4109 Copy(s, &adouble, 1, double);
4110 s += sizeof(double);
4112 sv_setnv(sv, (NV)adouble);
4113 PUSHs(sv_2mortal(sv));
4119 * Initialise the decode mapping. By using a table driven
4120 * algorithm, the code will be character-set independent
4121 * (and just as fast as doing character arithmetic)
4123 if (PL_uudmap['M'] == 0) {
4126 for (i = 0; i < sizeof(PL_uuemap); i += 1)
4127 PL_uudmap[PL_uuemap[i]] = i;
4129 * Because ' ' and '`' map to the same value,
4130 * we need to decode them both the same.
4135 along = (strend - s) * 3 / 4;
4136 sv = NEWSV(42, along);
4139 while (s < strend && *s > ' ' && ISUUCHAR(*s)) {
4144 len = PL_uudmap[*s++] & 077;
4146 if (s < strend && ISUUCHAR(*s))
4147 a = PL_uudmap[*s++] & 077;
4150 if (s < strend && ISUUCHAR(*s))
4151 b = PL_uudmap[*s++] & 077;
4154 if (s < strend && ISUUCHAR(*s))
4155 c = PL_uudmap[*s++] & 077;
4158 if (s < strend && ISUUCHAR(*s))
4159 d = PL_uudmap[*s++] & 077;
4162 hunk[0] = (a << 2) | (b >> 4);
4163 hunk[1] = (b << 4) | (c >> 2);
4164 hunk[2] = (c << 6) | d;
4165 sv_catpvn(sv, hunk, (len > 3) ? 3 : len);
4170 else if (s[1] == '\n') /* possible checksum byte */
4173 XPUSHs(sv_2mortal(sv));
4178 if (strchr("fFdD", datumtype) ||
4179 (checksum > 32 && strchr("iIlLNU", datumtype)) ) {
4183 while (checksum >= 16) {
4187 while (checksum >= 4) {
4193 along = (1 << checksum) - 1;
4194 while (cdouble < 0.0)
4196 cdouble = Perl_modf(cdouble / adouble, &trouble) * adouble;
4197 sv_setnv(sv, cdouble);
4200 if (checksum < 32) {
4201 aulong = (1 << checksum) - 1;
4204 sv_setuv(sv, (UV)culong);
4206 XPUSHs(sv_2mortal(sv));
4210 if (SP == oldsp && gimme == G_SCALAR)
4211 PUSHs(&PL_sv_undef);
4216 S_doencodes(pTHX_ register SV *sv, register char *s, register I32 len)
4220 *hunk = PL_uuemap[len];
4221 sv_catpvn(sv, hunk, 1);
4224 hunk[0] = PL_uuemap[(077 & (*s >> 2))];
4225 hunk[1] = PL_uuemap[(077 & (((*s << 4) & 060) | ((s[1] >> 4) & 017)))];
4226 hunk[2] = PL_uuemap[(077 & (((s[1] << 2) & 074) | ((s[2] >> 6) & 03)))];
4227 hunk[3] = PL_uuemap[(077 & (s[2] & 077))];
4228 sv_catpvn(sv, hunk, 4);
4233 char r = (len > 1 ? s[1] : '\0');
4234 hunk[0] = PL_uuemap[(077 & (*s >> 2))];
4235 hunk[1] = PL_uuemap[(077 & (((*s << 4) & 060) | ((r >> 4) & 017)))];
4236 hunk[2] = PL_uuemap[(077 & ((r << 2) & 074))];
4237 hunk[3] = PL_uuemap[0];
4238 sv_catpvn(sv, hunk, 4);
4240 sv_catpvn(sv, "\n", 1);
4244 S_is_an_int(pTHX_ char *s, STRLEN l)
4247 SV *result = newSVpvn(s, l);
4248 char *result_c = SvPV(result, n_a); /* convenience */
4249 char *out = result_c;
4259 SvREFCNT_dec(result);
4282 SvREFCNT_dec(result);
4288 SvCUR_set(result, out - result_c);
4292 /* pnum must be '\0' terminated */
4294 S_div128(pTHX_ SV *pnum, bool *done)
4297 char *s = SvPV(pnum, len);
4306 i = m * 10 + (*t - '0');
4308 r = (i >> 7); /* r < 10 */
4315 SvCUR_set(pnum, (STRLEN) (t - s));
4322 djSP; dMARK; dORIGMARK; dTARGET;
4323 register SV *cat = TARG;
4326 register char *pat = SvPVx(*++MARK, fromlen);
4327 register char *patend = pat + fromlen;
4332 static char null10[] = {0,0,0,0,0,0,0,0,0,0};
4333 static char *space10 = " ";
4335 /* These must not be in registers: */
4350 #ifdef PERL_NATINT_PACK
4351 int natint; /* native integer */
4356 sv_setpvn(cat, "", 0);
4357 while (pat < patend) {
4358 #define NEXTFROM (items-- > 0 ? *MARK++ : &PL_sv_no)
4359 datumtype = *pat++ & 0xFF;
4360 #ifdef PERL_NATINT_PACK
4363 if (isSPACE(datumtype))
4366 char *natstr = "sSiIlL";
4368 if (strchr(natstr, datumtype)) {
4369 #ifdef PERL_NATINT_PACK
4375 Perl_croak(aTHX_ "'!' allowed only after types %s", natstr);
4378 len = strchr("@Xxu", datumtype) ? 0 : items;
4381 else if (isDIGIT(*pat)) {
4383 while (isDIGIT(*pat))
4384 len = (len * 10) + (*pat++ - '0');
4390 Perl_croak(aTHX_ "Invalid type in pack: '%c'", (int)datumtype);
4391 case ',': /* grandfather in commas but with a warning */
4392 if (commas++ == 0 && ckWARN(WARN_UNSAFE))
4393 Perl_warner(aTHX_ WARN_UNSAFE, "Invalid type in pack: '%c'", (int)datumtype);
4396 DIE(aTHX_ "%% may only be used in unpack");
4407 if (SvCUR(cat) < len)
4408 DIE(aTHX_ "X outside of string");
4415 sv_catpvn(cat, null10, 10);
4418 sv_catpvn(cat, null10, len);
4424 aptr = SvPV(fromstr, fromlen);
4428 sv_catpvn(cat, aptr, len);
4430 sv_catpvn(cat, aptr, fromlen);
4432 if (datumtype == 'A') {
4434 sv_catpvn(cat, space10, 10);
4437 sv_catpvn(cat, space10, len);
4441 sv_catpvn(cat, null10, 10);
4444 sv_catpvn(cat, null10, len);
4451 char *savepat = pat;
4456 aptr = SvPV(fromstr, fromlen);
4461 SvCUR(cat) += (len+7)/8;
4462 SvGROW(cat, SvCUR(cat) + 1);
4463 aptr = SvPVX(cat) + aint;
4468 if (datumtype == 'B') {
4469 for (len = 0; len++ < aint;) {
4470 items |= *pat++ & 1;
4474 *aptr++ = items & 0xff;
4480 for (len = 0; len++ < aint;) {
4486 *aptr++ = items & 0xff;
4492 if (datumtype == 'B')
4493 items <<= 7 - (aint & 7);
4495 items >>= 7 - (aint & 7);
4496 *aptr++ = items & 0xff;
4498 pat = SvPVX(cat) + SvCUR(cat);
4509 char *savepat = pat;
4514 aptr = SvPV(fromstr, fromlen);
4519 SvCUR(cat) += (len+1)/2;
4520 SvGROW(cat, SvCUR(cat) + 1);
4521 aptr = SvPVX(cat) + aint;
4526 if (datumtype == 'H') {
4527 for (len = 0; len++ < aint;) {
4529 items |= ((*pat++ & 15) + 9) & 15;
4531 items |= *pat++ & 15;
4535 *aptr++ = items & 0xff;
4541 for (len = 0; len++ < aint;) {
4543 items |= (((*pat++ & 15) + 9) & 15) << 4;
4545 items |= (*pat++ & 15) << 4;
4549 *aptr++ = items & 0xff;
4555 *aptr++ = items & 0xff;
4556 pat = SvPVX(cat) + SvCUR(cat);
4568 aint = SvIV(fromstr);
4570 sv_catpvn(cat, &achar, sizeof(char));
4576 auint = SvUV(fromstr);
4577 SvGROW(cat, SvCUR(cat) + 10);
4578 SvCUR_set(cat, (char*)uv_to_utf8((U8*)SvEND(cat),auint)
4583 /* Float and double added by gnb@melba.bby.oz.au 22/11/89 */
4588 afloat = (float)SvNV(fromstr);
4589 sv_catpvn(cat, (char *)&afloat, sizeof (float));
4596 adouble = (double)SvNV(fromstr);
4597 sv_catpvn(cat, (char *)&adouble, sizeof (double));
4603 ashort = (I16)SvIV(fromstr);
4605 ashort = PerlSock_htons(ashort);
4607 CAT16(cat, &ashort);
4613 ashort = (I16)SvIV(fromstr);
4615 ashort = htovs(ashort);
4617 CAT16(cat, &ashort);
4621 #if SHORTSIZE != SIZE16
4623 unsigned short aushort;
4627 aushort = SvUV(fromstr);
4628 sv_catpvn(cat, (char *)&aushort, sizeof(unsigned short));
4638 aushort = (U16)SvUV(fromstr);
4639 CAT16(cat, &aushort);
4645 #if SHORTSIZE != SIZE16
4649 ashort = SvIV(fromstr);
4650 sv_catpvn(cat, (char *)&ashort, sizeof(short));
4658 ashort = (I16)SvIV(fromstr);
4659 CAT16(cat, &ashort);
4666 auint = SvUV(fromstr);
4667 sv_catpvn(cat, (char*)&auint, sizeof(unsigned int));
4673 adouble = Perl_floor(SvNV(fromstr));
4676 Perl_croak(aTHX_ "Cannot compress negative numbers");
4682 #ifdef CXUX_BROKEN_CONSTANT_CONVERT
4683 adouble <= UV_MAX_cxux
4690 char buf[1 + sizeof(UV)];
4691 char *in = buf + sizeof(buf);
4692 UV auv = U_V(adouble);
4695 *--in = (auv & 0x7f) | 0x80;
4698 buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */
4699 sv_catpvn(cat, in, (buf + sizeof(buf)) - in);
4701 else if (SvPOKp(fromstr)) { /* decimal string arithmetics */
4702 char *from, *result, *in;
4707 /* Copy string and check for compliance */
4708 from = SvPV(fromstr, len);
4709 if ((norm = is_an_int(from, len)) == NULL)
4710 Perl_croak(aTHX_ "can compress only unsigned integer");
4712 New('w', result, len, char);
4716 *--in = div128(norm, &done) | 0x80;
4717 result[len - 1] &= 0x7F; /* clear continue bit */
4718 sv_catpvn(cat, in, (result + len) - in);
4720 SvREFCNT_dec(norm); /* free norm */
4722 else if (SvNOKp(fromstr)) {
4723 char buf[sizeof(double) * 2]; /* 8/7 <= 2 */
4724 char *in = buf + sizeof(buf);
4727 double next = floor(adouble / 128);
4728 *--in = (unsigned char)(adouble - (next * 128)) | 0x80;
4729 if (--in < buf) /* this cannot happen ;-) */
4730 Perl_croak(aTHX_ "Cannot compress integer");
4732 } while (adouble > 0);
4733 buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */
4734 sv_catpvn(cat, in, (buf + sizeof(buf)) - in);
4737 Perl_croak(aTHX_ "Cannot compress non integer");
4743 aint = SvIV(fromstr);
4744 sv_catpvn(cat, (char*)&aint, sizeof(int));
4750 aulong = SvUV(fromstr);
4752 aulong = PerlSock_htonl(aulong);
4754 CAT32(cat, &aulong);
4760 aulong = SvUV(fromstr);
4762 aulong = htovl(aulong);
4764 CAT32(cat, &aulong);
4768 #if LONGSIZE != SIZE32
4772 aulong = SvUV(fromstr);
4773 sv_catpvn(cat, (char *)&aulong, sizeof(unsigned long));
4781 aulong = SvUV(fromstr);
4782 CAT32(cat, &aulong);
4787 #if LONGSIZE != SIZE32
4791 along = SvIV(fromstr);
4792 sv_catpvn(cat, (char *)&along, sizeof(long));
4800 along = SvIV(fromstr);
4809 auquad = (Uquad_t)SvIV(fromstr);
4810 sv_catpvn(cat, (char*)&auquad, sizeof(Uquad_t));
4816 aquad = (Quad_t)SvIV(fromstr);
4817 sv_catpvn(cat, (char*)&aquad, sizeof(Quad_t));
4820 #endif /* HAS_QUAD */
4822 len = 1; /* assume SV is correct length */
4827 if (fromstr == &PL_sv_undef)
4831 /* XXX better yet, could spirit away the string to
4832 * a safe spot and hang on to it until the result
4833 * of pack() (and all copies of the result) are
4836 if (ckWARN(WARN_UNSAFE) && (SvTEMP(fromstr) || SvPADTMP(fromstr)))
4837 Perl_warner(aTHX_ WARN_UNSAFE,
4838 "Attempt to pack pointer to temporary value");
4839 if (SvPOK(fromstr) || SvNIOK(fromstr))
4840 aptr = SvPV(fromstr,n_a);
4842 aptr = SvPV_force(fromstr,n_a);
4844 sv_catpvn(cat, (char*)&aptr, sizeof(char*));
4849 aptr = SvPV(fromstr, fromlen);
4850 SvGROW(cat, fromlen * 4 / 3);
4855 while (fromlen > 0) {
4862 doencodes(cat, aptr, todo);
4881 register I32 limit = POPi; /* note, negative is forever */
4884 register char *s = SvPV(sv, len);
4885 char *strend = s + len;
4887 register REGEXP *rx;
4891 I32 maxiters = (strend - s) + 10;
4894 I32 origlimit = limit;
4897 AV *oldstack = PL_curstack;
4898 I32 gimme = GIMME_V;
4899 I32 oldsave = PL_savestack_ix;
4900 I32 make_mortal = 1;
4901 MAGIC *mg = (MAGIC *) NULL;
4904 Copy(&LvTARGOFF(POPs), &pm, 1, PMOP*);
4909 DIE(aTHX_ "panic: do_split");
4910 rx = pm->op_pmregexp;
4912 TAINT_IF((pm->op_pmflags & PMf_LOCALE) &&
4913 (pm->op_pmflags & (PMf_WHITE | PMf_SKIPWHITE)));
4915 if (pm->op_pmreplroot)
4916 ary = GvAVn((GV*)pm->op_pmreplroot);
4917 else if (gimme != G_ARRAY)
4919 ary = (AV*)PL_curpad[0];
4921 ary = GvAVn(PL_defgv);
4922 #endif /* USE_THREADS */
4925 if (ary && (gimme != G_ARRAY || (pm->op_pmflags & PMf_ONCE))) {
4931 if (mg = SvTIED_mg((SV*)ary, 'P')) {
4933 XPUSHs(SvTIED_obj((SV*)ary, mg));
4938 for (i = AvFILLp(ary); i >= 0; i--)
4939 AvARRAY(ary)[i] = &PL_sv_undef; /* don't free mere refs */
4941 /* temporarily switch stacks */
4942 SWITCHSTACK(PL_curstack, ary);
4946 base = SP - PL_stack_base;
4948 if (pm->op_pmflags & PMf_SKIPWHITE) {
4949 if (pm->op_pmflags & PMf_LOCALE) {
4950 while (isSPACE_LC(*s))
4958 if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) {
4959 SAVEINT(PL_multiline);
4960 PL_multiline = pm->op_pmflags & PMf_MULTILINE;
4964 limit = maxiters + 2;
4965 if (pm->op_pmflags & PMf_WHITE) {
4968 while (m < strend &&
4969 !((pm->op_pmflags & PMf_LOCALE)
4970 ? isSPACE_LC(*m) : isSPACE(*m)))
4975 dstr = NEWSV(30, m-s);
4976 sv_setpvn(dstr, s, m-s);
4982 while (s < strend &&
4983 ((pm->op_pmflags & PMf_LOCALE)
4984 ? isSPACE_LC(*s) : isSPACE(*s)))
4988 else if (strEQ("^", rx->precomp)) {
4991 for (m = s; m < strend && *m != '\n'; m++) ;
4995 dstr = NEWSV(30, m-s);
4996 sv_setpvn(dstr, s, m-s);
5003 else if ((rx->reganch & RE_USE_INTUIT) && !rx->nparens
5004 && (rx->reganch & ROPT_CHECK_ALL)
5005 && !(rx->reganch & ROPT_ANCH)) {
5006 int tail = (rx->reganch & RE_INTUIT_TAIL);
5007 SV *csv = CALLREG_INTUIT_STRING(aTHX_ rx);
5011 if (len == 1 && !tail) {
5015 for (m = s; m < strend && *m != c; m++) ;
5018 dstr = NEWSV(30, m-s);
5019 sv_setpvn(dstr, s, m-s);
5028 while (s < strend && --limit &&
5029 (m = fbm_instr((unsigned char*)s, (unsigned char*)strend,
5030 csv, PL_multiline ? FBMrf_MULTILINE : 0)) )
5033 dstr = NEWSV(31, m-s);
5034 sv_setpvn(dstr, s, m-s);
5038 s = m + len; /* Fake \n at the end */
5043 maxiters += (strend - s) * rx->nparens;
5044 while (s < strend && --limit
5045 /* && (!rx->check_substr
5046 || ((s = CALLREG_INTUIT_START(aTHX_ rx, sv, s, strend,
5048 */ && CALLREGEXEC(aTHX_ rx, s, strend, orig,
5049 1 /* minend */, sv, NULL, 0))
5051 TAINT_IF(RX_MATCH_TAINTED(rx));
5052 if (RX_MATCH_COPIED(rx) && rx->subbeg != orig) {
5057 strend = s + (strend - m);
5059 m = rx->startp[0] + orig;
5060 dstr = NEWSV(32, m-s);
5061 sv_setpvn(dstr, s, m-s);
5066 for (i = 1; i <= rx->nparens; i++) {
5067 s = rx->startp[i] + orig;
5068 m = rx->endp[i] + orig;
5070 dstr = NEWSV(33, m-s);
5071 sv_setpvn(dstr, s, m-s);
5074 dstr = NEWSV(33, 0);
5080 s = rx->endp[0] + orig;
5084 LEAVE_SCOPE(oldsave);
5085 iters = (SP - PL_stack_base) - base;
5086 if (iters > maxiters)
5087 DIE(aTHX_ "Split loop");
5089 /* keep field after final delim? */
5090 if (s < strend || (iters && origlimit)) {
5091 dstr = NEWSV(34, strend-s);
5092 sv_setpvn(dstr, s, strend-s);
5098 else if (!origlimit) {
5099 while (iters > 0 && (!TOPs || !SvANY(TOPs) || SvCUR(TOPs) == 0))
5105 SWITCHSTACK(ary, oldstack);
5106 if (SvSMAGICAL(ary)) {
5111 if (gimme == G_ARRAY) {
5113 Copy(AvARRAY(ary), SP + 1, iters, SV*);
5121 call_method("PUSH",G_SCALAR|G_DISCARD);
5124 if (gimme == G_ARRAY) {
5125 /* EXTEND should not be needed - we just popped them */
5127 for (i=0; i < iters; i++) {
5128 SV **svp = av_fetch(ary, i, FALSE);
5129 PUSHs((svp) ? *svp : &PL_sv_undef);
5136 if (gimme == G_ARRAY)
5139 if (iters || !pm->op_pmreplroot) {
5149 Perl_unlock_condpair(pTHX_ void *svv)
5152 MAGIC *mg = mg_find((SV*)svv, 'm');
5155 Perl_croak(aTHX_ "panic: unlock_condpair unlocking non-mutex");
5156 MUTEX_LOCK(MgMUTEXP(mg));
5157 if (MgOWNER(mg) != thr)
5158 Perl_croak(aTHX_ "panic: unlock_condpair unlocking mutex that we don't own");
5160 COND_SIGNAL(MgOWNERCONDP(mg));
5161 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "0x%lx: unlock 0x%lx\n",
5162 (unsigned long)thr, (unsigned long)svv);)
5163 MUTEX_UNLOCK(MgMUTEXP(mg));
5165 #endif /* USE_THREADS */
5178 mg = condpair_magic(sv);
5179 MUTEX_LOCK(MgMUTEXP(mg));
5180 if (MgOWNER(mg) == thr)
5181 MUTEX_UNLOCK(MgMUTEXP(mg));
5184 COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg));
5186 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "0x%lx: pp_lock lock 0x%lx\n",
5187 (unsigned long)thr, (unsigned long)sv);)
5188 MUTEX_UNLOCK(MgMUTEXP(mg));
5189 SAVEDESTRUCTOR(Perl_unlock_condpair, sv);
5191 #endif /* USE_THREADS */
5192 if (SvTYPE(retsv) == SVt_PVAV || SvTYPE(retsv) == SVt_PVHV
5193 || SvTYPE(retsv) == SVt_PVCV) {
5194 retsv = refto(retsv);
5205 if (PL_op->op_private & OPpLVAL_INTRO)
5206 PUSHs(*save_threadsv(PL_op->op_targ));
5208 PUSHs(THREADSV(PL_op->op_targ));
5211 DIE(aTHX_ "tried to access per-thread data in non-threaded perl");
5212 #endif /* USE_THREADS */