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 * "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
19 * Types used in bitwise operations.
21 * Normally we'd just use IV and UV. However, some hardware and
22 * software combinations (e.g. Alpha and current OSF/1) don't have a
23 * floating-point type to use for NV that has adequate bits to fully
24 * hold an IV/UV. (In other words, sizeof(long) == sizeof(double).)
26 * It just so happens that "int" is the right size almost everywhere.
32 * Mask used after bitwise operations.
34 * There is at least one realm (Cray word machines) that doesn't
35 * have an integral type (except char) small enough to be represented
36 * in a double without loss; that is, it has no 32-bit type.
38 #if BYTEORDER > 0xFFFF && defined(_CRAY) && !defined(_CRAYMPP)
40 # define BW_MASK ((1 << BW_BITS) - 1)
41 # define BW_SIGN (1 << (BW_BITS - 1))
42 # define BWi(i) (((i) & BW_SIGN) ? ((i) | ~BW_MASK) : ((i) & BW_MASK))
43 # define BWu(u) ((u) & BW_MASK)
50 * Offset for integer pack/unpack.
52 * On architectures where I16 and I32 aren't really 16 and 32 bits,
53 * which for now are all Crays, pack and unpack have to play games.
57 * These values are required for portability of pack() output.
58 * If they're not right on your machine, then pack() and unpack()
59 * wouldn't work right anyway; you'll need to apply the Cray hack.
60 * (I'd like to check them with #if, but you can't use sizeof() in
66 #if BYTEORDER > 0xFFFF && defined(_CRAY) && !defined(_CRAYMPP)
67 # if BYTEORDER == 0x12345678
68 # define OFF16(p) (char*)(p)
69 # define OFF32(p) (char*)(p)
71 # if BYTEORDER == 0x87654321
72 # define OFF16(p) ((char*)(p) + (sizeof(U16) - SIZE16))
73 # define OFF32(p) ((char*)(p) + (sizeof(U32) - SIZE32))
75 }}}} bad cray byte order
78 # define COPY16(s,p) (*(p) = 0, Copy(s, OFF16(p), SIZE16, char))
79 # define COPY32(s,p) (*(p) = 0, Copy(s, OFF32(p), SIZE32, char))
80 # define CAT16(sv,p) sv_catpvn(sv, OFF16(p), SIZE16)
81 # define CAT32(sv,p) sv_catpvn(sv, OFF32(p), SIZE32)
83 # define COPY16(s,p) Copy(s, p, SIZE16, char)
84 # define COPY32(s,p) Copy(s, p, SIZE32, char)
85 # define CAT16(sv,p) sv_catpvn(sv, (char*)(p), SIZE16)
86 # define CAT32(sv,p) sv_catpvn(sv, (char*)(p), SIZE32)
89 static void doencodes _((SV* sv, char* s, I32 len));
90 static SV* refto _((SV* sv));
91 static U32 seed _((void));
93 static bool srand_called = FALSE;
95 /* variations on pp_null */
100 if (GIMME_V == G_SCALAR)
115 if (op->op_private & OPpLVAL_INTRO)
116 SAVECLEARSV(curpad[op->op_targ]);
118 if (op->op_flags & OPf_REF) {
122 if (GIMME == G_ARRAY) {
123 I32 maxarg = AvFILL((AV*)TARG) + 1;
125 Copy(AvARRAY((AV*)TARG), SP+1, maxarg, SV*);
129 SV* sv = sv_newmortal();
130 I32 maxarg = AvFILL((AV*)TARG) + 1;
131 sv_setiv(sv, maxarg);
143 if (op->op_private & OPpLVAL_INTRO)
144 SAVECLEARSV(curpad[op->op_targ]);
145 if (op->op_flags & OPf_REF)
148 if (gimme == G_ARRAY) {
149 RETURNOP(do_kv(ARGS));
151 else if (gimme == G_SCALAR) {
152 SV* sv = sv_newmortal();
153 if (HvFILL((HV*)TARG))
154 sv_setpvf(sv, "%ld/%ld",
155 (long)HvFILL((HV*)TARG), (long)HvMAX((HV*)TARG) + 1);
165 DIE("NOT IMPL LINE %d",__LINE__);
177 if (SvTYPE(sv) == SVt_PVIO) {
178 GV *gv = (GV*) sv_newmortal();
179 gv_init(gv, 0, "", 0, 0);
180 GvIOp(gv) = (IO *)sv;
183 } else if (SvTYPE(sv) != SVt_PVGV)
184 DIE("Not a GLOB reference");
187 if (SvTYPE(sv) != SVt_PVGV) {
190 if (SvGMAGICAL(sv)) {
196 if (op->op_flags & OPf_REF ||
197 op->op_private & HINT_STRICT_REFS)
198 DIE(no_usym, "a symbol");
204 if (op->op_private & HINT_STRICT_REFS)
205 DIE(no_symref, sym, "a symbol");
206 sv = (SV*)gv_fetchpv(sym, TRUE, SVt_PVGV);
209 if (op->op_private & OPpLVAL_INTRO)
210 save_gp((GV*)sv, !(op->op_flags & OPf_SPECIAL));
222 switch (SvTYPE(sv)) {
226 DIE("Not a SCALAR reference");
233 if (SvTYPE(gv) != SVt_PVGV) {
234 if (SvGMAGICAL(sv)) {
240 if (op->op_flags & OPf_REF ||
241 op->op_private & HINT_STRICT_REFS)
242 DIE(no_usym, "a SCALAR");
248 if (op->op_private & HINT_STRICT_REFS)
249 DIE(no_symref, sym, "a SCALAR");
250 gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PV);
254 if (op->op_flags & OPf_MOD) {
255 if (op->op_private & OPpLVAL_INTRO)
256 sv = save_scalar((GV*)TOPs);
257 else if (op->op_private & OPpDEREF)
258 vivify_ref(sv, op->op_private & OPpDEREF);
268 SV *sv = AvARYLEN(av);
270 AvARYLEN(av) = sv = NEWSV(0,0);
271 sv_upgrade(sv, SVt_IV);
272 sv_magic(sv, (SV*)av, '#', Nullch, 0);
280 dSP; dTARGET; dPOPss;
282 if (op->op_flags & OPf_MOD) {
283 if (SvTYPE(TARG) < SVt_PVLV) {
284 sv_upgrade(TARG, SVt_PVLV);
285 sv_magic(TARG, Nullsv, '.', Nullch, 0);
290 PUSHs(TARG); /* no SvSETMAGIC */
296 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
297 mg = mg_find(sv, 'g');
298 if (mg && mg->mg_len >= 0) {
299 PUSHi(mg->mg_len + curcop->cop_arybase);
313 /* We usually try to add a non-existent subroutine in case of AUTOLOAD. */
314 /* (But not in defined().) */
315 CV *cv = sv_2cv(TOPs, &stash, &gv, !(op->op_flags & OPf_SPECIAL));
318 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
335 cv = sv_2cv(TOPs, &stash, &gv, FALSE);
337 ret = sv_2mortal(newSVpv(SvPVX(cv), SvCUR(cv)));
345 CV* cv = (CV*)curpad[op->op_targ];
347 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
363 if (GIMME != G_ARRAY) {
367 EXTEND_MORTAL(SP - MARK);
369 *MARK = refto(*MARK);
379 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y') {
382 if (!(sv = LvTARG(sv)))
385 else if (SvPADTMP(sv))
389 (void)SvREFCNT_inc(sv);
392 sv_upgrade(rv, SVt_RV);
406 if (sv && SvGMAGICAL(sv))
409 if (!sv || !SvROK(sv))
413 pv = sv_reftype(sv,TRUE);
414 PUSHp(pv, strlen(pv));
424 stash = curcop->cop_stash;
426 stash = gv_stashsv(POPs, TRUE);
428 (void)sv_bless(TOPs, stash);
432 /* Pattern matching */
437 register unsigned char *s;
440 register I32 *sfirst;
444 if (sv == lastscream) {
450 SvSCREAM_off(lastscream);
451 SvREFCNT_dec(lastscream);
453 lastscream = SvREFCNT_inc(sv);
456 s = (unsigned char*)(SvPV(sv, len));
460 if (pos > maxscream) {
462 maxscream = pos + 80;
463 New(301, screamfirst, 256, I32);
464 New(302, screamnext, maxscream, I32);
467 maxscream = pos + pos / 4;
468 Renew(screamnext, maxscream, I32);
472 sfirst = screamfirst;
475 if (!sfirst || !snext)
476 DIE("do_study: out of memory");
478 for (ch = 256; ch; --ch)
485 snext[pos] = sfirst[ch] - pos;
492 sv_magic(sv, Nullsv, 'g', Nullch, 0); /* piggyback on m//g magic */
501 if (op->op_flags & OPf_STACKED)
507 TARG = sv_newmortal();
508 PUSHi(do_trans(sv, op));
512 /* Lvalue operators. */
534 SETi(do_chomp(TOPs));
541 register I32 count = 0;
544 count += do_chomp(POPs);
555 if (!sv || !SvANY(sv))
557 switch (SvTYPE(sv)) {
559 if (AvMAX(sv) >= 0 || SvRMAGICAL(sv))
563 if (HvARRAY(sv) || SvRMAGICAL(sv))
567 if (CvROOT(sv) || CvXSUB(sv))
584 if (!op->op_private) {
593 if (SvTHINKFIRST(sv)) {
600 switch (SvTYPE(sv)) {
610 if (cv_const_sv((CV*)sv))
611 warn("Constant subroutine %s undefined",
612 CvANON((CV*)sv) ? "(anonymous)" : GvENAME(CvGV((CV*)sv)));
615 { GV* gv = (GV*)SvREFCNT_inc(CvGV((CV*)sv));
617 CvGV((CV*)sv) = gv; } /* let user-undef'd sub keep its identity */
621 sv_setsv(sv, &sv_undef);
624 if (SvTYPE(sv) >= SVt_PV && SvPVX(sv) && SvLEN(sv)) {
627 SvPV_set(sv, Nullch);
640 if (SvREADONLY(TOPs) || SvTYPE(TOPs) > SVt_PVLV)
642 if (SvIOK(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) &&
643 SvIVX(TOPs) != IV_MIN)
646 SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK);
657 if (SvREADONLY(TOPs) || SvTYPE(TOPs) > SVt_PVLV)
659 sv_setsv(TARG, TOPs);
660 if (SvIOK(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) &&
661 SvIVX(TOPs) != IV_MAX)
664 SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK);
678 if(SvREADONLY(TOPs) || SvTYPE(TOPs) > SVt_PVLV)
680 sv_setsv(TARG, TOPs);
681 if (SvIOK(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) &&
682 SvIVX(TOPs) != IV_MIN)
685 SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK);
694 /* Ordinary operators. */
698 dSP; dATARGET; tryAMAGICbin(pow,opASSIGN);
701 SETn( pow( left, right) );
708 dSP; dATARGET; tryAMAGICbin(mult,opASSIGN);
711 SETn( left * right );
718 dSP; dATARGET; tryAMAGICbin(div,opASSIGN);
723 DIE("Illegal division by zero");
725 /* insure that 20./5. == 4. */
728 if ((double)I_V(left) == left &&
729 (double)I_V(right) == right &&
730 (k = I_V(left)/I_V(right))*I_V(right) == I_V(left)) {
733 value = left / right;
737 value = left / right;
746 dSP; dATARGET; tryAMAGICbin(mod,opASSIGN);
754 if (SvIOK(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs)) {
756 right = (right_neg = (i < 0)) ? -i : i;
760 right = U_V((right_neg = (n < 0)) ? -n : n);
763 if (SvIOK(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs)) {
765 left = (left_neg = (i < 0)) ? -i : i;
769 left = U_V((left_neg = (n < 0)) ? -n : n);
773 DIE("Illegal modulus zero");
776 if ((left_neg != right_neg) && ans)
779 if (ans <= -(UV)IV_MAX)
780 sv_setiv(TARG, (IV) -ans);
782 sv_setnv(TARG, -(double)ans);
793 dSP; dATARGET; tryAMAGICbin(repeat,opASSIGN);
795 register I32 count = POPi;
796 if (GIMME == G_ARRAY && op->op_private & OPpREPEAT_DOLIST) {
798 I32 items = SP - MARK;
810 repeatcpy((char*)(MARK + items), (char*)MARK,
811 items * sizeof(SV*), count - 1);
817 else { /* Note: mark already snarfed by pp_list */
822 if (TARG == tmpstr && SvTHINKFIRST(tmpstr)) {
823 if (SvREADONLY(tmpstr) && curcop != &compiling)
824 DIE("Can't x= to readonly value");
828 SvSetSV(TARG, tmpstr);
829 SvPV_force(TARG, len);
834 SvGROW(TARG, (count * len) + 1);
835 repeatcpy(SvPVX(TARG) + len, SvPVX(TARG), len, count - 1);
836 SvCUR(TARG) *= count;
840 (void)SvPOK_only(TARG);
849 dSP; dATARGET; tryAMAGICbin(subtr,opASSIGN);
852 SETn( left - right );
859 dSP; dATARGET; tryAMAGICbin(lshift,opASSIGN);
862 if (op->op_private & HINT_INTEGER) {
878 dSP; dATARGET; tryAMAGICbin(rshift,opASSIGN);
881 if (op->op_private & HINT_INTEGER) {
897 dSP; tryAMAGICbinSET(lt,0);
900 SETs(boolSV(TOPn < value));
907 dSP; tryAMAGICbinSET(gt,0);
910 SETs(boolSV(TOPn > value));
917 dSP; tryAMAGICbinSET(le,0);
920 SETs(boolSV(TOPn <= value));
927 dSP; tryAMAGICbinSET(ge,0);
930 SETs(boolSV(TOPn >= value));
937 dSP; tryAMAGICbinSET(ne,0);
940 SETs(boolSV(TOPn != value));
947 dSP; dTARGET; tryAMAGICbin(ncmp,0);
954 else if (left < right)
956 else if (left > right)
969 dSP; tryAMAGICbinSET(slt,0);
972 int cmp = ((op->op_private & OPpLOCALE)
973 ? sv_cmp_locale(left, right)
974 : sv_cmp(left, right));
975 SETs(boolSV(cmp < 0));
982 dSP; tryAMAGICbinSET(sgt,0);
985 int cmp = ((op->op_private & OPpLOCALE)
986 ? sv_cmp_locale(left, right)
987 : sv_cmp(left, right));
988 SETs(boolSV(cmp > 0));
995 dSP; tryAMAGICbinSET(sle,0);
998 int cmp = ((op->op_private & OPpLOCALE)
999 ? sv_cmp_locale(left, right)
1000 : sv_cmp(left, right));
1001 SETs(boolSV(cmp <= 0));
1008 dSP; tryAMAGICbinSET(sge,0);
1011 int cmp = ((op->op_private & OPpLOCALE)
1012 ? sv_cmp_locale(left, right)
1013 : sv_cmp(left, right));
1014 SETs(boolSV(cmp >= 0));
1021 dSP; tryAMAGICbinSET(seq,0);
1024 SETs(boolSV(sv_eq(left, right)));
1031 dSP; tryAMAGICbinSET(sne,0);
1034 SETs(boolSV(!sv_eq(left, right)));
1041 dSP; dTARGET; tryAMAGICbin(scmp,0);
1044 int cmp = ((op->op_private & OPpLOCALE)
1045 ? sv_cmp_locale(left, right)
1046 : sv_cmp(left, right));
1054 dSP; dATARGET; tryAMAGICbin(band,opASSIGN);
1057 if (SvNIOKp(left) || SvNIOKp(right)) {
1058 if (op->op_private & HINT_INTEGER) {
1059 IBW value = SvIV(left) & SvIV(right);
1063 UBW value = SvUV(left) & SvUV(right);
1068 do_vop(op->op_type, TARG, left, right);
1077 dSP; dATARGET; tryAMAGICbin(bxor,opASSIGN);
1080 if (SvNIOKp(left) || SvNIOKp(right)) {
1081 if (op->op_private & HINT_INTEGER) {
1082 IBW value = (USE_LEFT(left) ? SvIV(left) : 0) ^ SvIV(right);
1086 UBW value = (USE_LEFT(left) ? SvUV(left) : 0) ^ SvUV(right);
1091 do_vop(op->op_type, TARG, left, right);
1100 dSP; dATARGET; tryAMAGICbin(bor,opASSIGN);
1103 if (SvNIOKp(left) || SvNIOKp(right)) {
1104 if (op->op_private & HINT_INTEGER) {
1105 IBW value = (USE_LEFT(left) ? SvIV(left) : 0) | SvIV(right);
1109 UBW value = (USE_LEFT(left) ? SvUV(left) : 0) | SvUV(right);
1114 do_vop(op->op_type, TARG, left, right);
1123 dSP; dTARGET; tryAMAGICun(neg);
1128 if (SvIOKp(sv) && !SvNOKp(sv) && !SvPOKp(sv) && SvIVX(sv) != IV_MIN)
1130 else if (SvNIOKp(sv))
1132 else if (SvPOKp(sv)) {
1134 char *s = SvPV(sv, len);
1135 if (isIDFIRST(*s)) {
1136 sv_setpvn(TARG, "-", 1);
1139 else if (*s == '+' || *s == '-') {
1141 *SvPV_force(TARG, len) = *s == '-' ? '+' : '-';
1144 sv_setnv(TARG, -SvNV(sv));
1156 dSP; tryAMAGICunSET(not);
1157 #endif /* OVERLOAD */
1158 *stack_sp = boolSV(!SvTRUE(*stack_sp));
1164 dSP; dTARGET; tryAMAGICun(compl);
1168 if (op->op_private & HINT_INTEGER) {
1169 IBW value = ~SvIV(sv);
1173 UBW value = ~SvUV(sv);
1178 register char *tmps;
1179 register long *tmpl;
1184 tmps = SvPV_force(TARG, len);
1187 for ( ; anum && (unsigned long)tmps % sizeof(long); anum--, tmps++)
1190 for ( ; anum >= sizeof(long); anum -= sizeof(long), tmpl++)
1194 for ( ; anum > 0; anum--, tmps++)
1203 /* integer versions of some of the above */
1207 dSP; dATARGET; tryAMAGICbin(mult,opASSIGN);
1210 SETi( left * right );
1217 dSP; dATARGET; tryAMAGICbin(div,opASSIGN);
1221 DIE("Illegal division by zero");
1222 value = POPi / value;
1230 dSP; dATARGET; tryAMAGICbin(mod,opASSIGN);
1234 DIE("Illegal modulus zero");
1235 SETi( left % right );
1242 dSP; dATARGET; tryAMAGICbin(add,opASSIGN);
1245 SETi( left + right );
1252 dSP; dATARGET; tryAMAGICbin(subtr,opASSIGN);
1255 SETi( left - right );
1262 dSP; tryAMAGICbinSET(lt,0);
1265 SETs(boolSV(left < right));
1272 dSP; tryAMAGICbinSET(gt,0);
1275 SETs(boolSV(left > right));
1282 dSP; tryAMAGICbinSET(le,0);
1285 SETs(boolSV(left <= right));
1292 dSP; tryAMAGICbinSET(ge,0);
1295 SETs(boolSV(left >= right));
1302 dSP; tryAMAGICbinSET(eq,0);
1305 SETs(boolSV(left == right));
1312 dSP; tryAMAGICbinSET(ne,0);
1315 SETs(boolSV(left != right));
1322 dSP; dTARGET; tryAMAGICbin(ncmp,0);
1329 else if (left < right)
1340 dSP; dTARGET; tryAMAGICun(neg);
1345 /* High falutin' math. */
1349 dSP; dTARGET; tryAMAGICbin(atan2,0);
1352 SETn(atan2(left, right));
1359 dSP; dTARGET; tryAMAGICun(sin);
1371 dSP; dTARGET; tryAMAGICun(cos);
1391 if (!srand_called) {
1392 (void)srand((unsigned)seed());
1393 srand_called = TRUE;
1396 value = rand() * value / 2147483648.0;
1399 value = rand() * value / 65536.0;
1402 value = rand() * value / 32768.0;
1404 value = rand() * value / (double)(((unsigned long)1) << RANDBITS);
1420 (void)srand((unsigned)anum);
1421 srand_called = TRUE;
1430 * This is really just a quick hack which grabs various garbage
1431 * values. It really should be a real hash algorithm which
1432 * spreads the effect of every input bit onto every output bit,
1433 * if someone who knows about such tings would bother to write it.
1434 * Might be a good idea to add that function to CORE as well.
1435 * No numbers below come from careful analysis or anyting here,
1436 * except they are primes and SEED_C1 > 1E6 to get a full-width
1437 * value from (tv_sec * SEED_C1 + tv_usec). The multipliers should
1438 * probably be bigger too.
1441 # define SEED_C1 1000003
1442 #define SEED_C4 73819
1444 # define SEED_C1 25747
1445 #define SEED_C4 20639
1449 #define SEED_C5 26107
1453 # include <starlet.h>
1454 /* when[] = (low 32 bits, high 32 bits) of time since epoch
1455 * in 100-ns units, typically incremented ever 10 ms. */
1456 unsigned int when[2];
1457 _ckvmssts(sys$gettim(when));
1458 u = (U32)SEED_C1 * when[0] + (U32)SEED_C2 * when[1];
1460 # ifdef HAS_GETTIMEOFDAY
1461 struct timeval when;
1462 gettimeofday(&when,(struct timezone *) 0);
1463 u = (U32)SEED_C1 * when.tv_sec + (U32)SEED_C2 * when.tv_usec;
1467 u = (U32)SEED_C1 * when;
1470 u += SEED_C3 * (U32)getpid();
1471 u += SEED_C4 * (U32)(UV)stack_sp;
1472 #ifndef PLAN9 /* XXX Plan9 assembler chokes on this; fix needed */
1473 u += SEED_C5 * (U32)(UV)&when;
1480 dSP; dTARGET; tryAMAGICun(exp);
1492 dSP; dTARGET; tryAMAGICun(log);
1497 SET_NUMERIC_STANDARD();
1498 DIE("Can't take log of %g", value);
1508 dSP; dTARGET; tryAMAGICun(sqrt);
1513 SET_NUMERIC_STANDARD();
1514 DIE("Can't take sqrt of %g", value);
1516 value = sqrt(value);
1526 double value = TOPn;
1529 if (SvIOKp(TOPs) && !SvNOKp(TOPs) && !SvPOKp(TOPs)) {
1535 (void)modf(value, &value);
1537 (void)modf(-value, &value);
1552 dSP; dTARGET; tryAMAGICun(abs);
1554 double value = TOPn;
1557 if (SvIOKp(TOPs) && !SvNOKp(TOPs) && !SvPOKp(TOPs) &&
1558 (iv = SvIVX(TOPs)) != IV_MIN) {
1579 XPUSHu(scan_hex(tmps, 99, &argtype));
1591 while (*tmps && isSPACE(*tmps))
1596 value = scan_hex(++tmps, 99, &argtype);
1598 value = scan_oct(tmps, 99, &argtype);
1608 SETi( sv_len(TOPs) );
1620 I32 lvalue = op->op_flags & OPf_MOD;
1622 I32 arybase = curcop->cop_arybase;
1626 pos = POPi - arybase;
1628 tmps = SvPV(sv, curlen);
1630 pos += curlen + arybase;
1631 if (pos < 0 && MAXARG < 3)
1634 if (pos < 0 || pos > curlen) {
1635 if (dowarn || lvalue)
1636 warn("substr outside of string");
1643 len += curlen - pos;
1648 rem = curlen - pos; /* rem=how many bytes left*/
1651 sv_setpvn(TARG, tmps, rem);
1652 if (lvalue) { /* it's an lvalue! */
1653 if (!SvGMAGICAL(sv)) {
1657 warn("Attempt to use reference as lvalue in substr");
1659 if (SvOK(sv)) /* is it defined ? */
1660 (void)SvPOK_only(sv);
1662 sv_setpvn(sv,"",0); /* avoid lexical reincarnation */
1665 if (SvTYPE(TARG) < SVt_PVLV) {
1666 sv_upgrade(TARG, SVt_PVLV);
1667 sv_magic(TARG, Nullsv, 'x', Nullch, 0);
1672 LvTARGOFF(TARG) = pos;
1673 LvTARGLEN(TARG) = rem;
1676 PUSHs(TARG); /* avoid SvSETMAGIC here */
1683 register I32 size = POPi;
1684 register I32 offset = POPi;
1685 register SV *src = POPs;
1686 I32 lvalue = op->op_flags & OPf_MOD;
1688 unsigned char *s = (unsigned char*)SvPV(src, srclen);
1689 unsigned long retnum;
1692 offset *= size; /* turn into bit offset */
1693 len = (offset + size + 7) / 8;
1694 if (offset < 0 || size < 1)
1697 if (lvalue) { /* it's an lvalue! */
1698 if (SvTYPE(TARG) < SVt_PVLV) {
1699 sv_upgrade(TARG, SVt_PVLV);
1700 sv_magic(TARG, Nullsv, 'v', Nullch, 0);
1705 LvTARGOFF(TARG) = offset;
1706 LvTARGLEN(TARG) = size;
1714 if (offset >= srclen)
1717 retnum = (unsigned long) s[offset] << 8;
1719 else if (size == 32) {
1720 if (offset >= srclen)
1722 else if (offset + 1 >= srclen)
1723 retnum = (unsigned long) s[offset] << 24;
1724 else if (offset + 2 >= srclen)
1725 retnum = ((unsigned long) s[offset] << 24) +
1726 ((unsigned long) s[offset + 1] << 16);
1728 retnum = ((unsigned long) s[offset] << 24) +
1729 ((unsigned long) s[offset + 1] << 16) +
1730 (s[offset + 2] << 8);
1735 retnum = (s[offset >> 3] >> (offset & 7)) & ((1 << size) - 1);
1740 else if (size == 16)
1741 retnum = ((unsigned long) s[offset] << 8) + s[offset+1];
1742 else if (size == 32)
1743 retnum = ((unsigned long) s[offset] << 24) +
1744 ((unsigned long) s[offset + 1] << 16) +
1745 (s[offset + 2] << 8) + s[offset+3];
1749 sv_setiv(TARG, (IV)retnum);
1764 I32 arybase = curcop->cop_arybase;
1769 offset = POPi - arybase;
1772 tmps = SvPV(big, biglen);
1775 else if (offset > biglen)
1777 if (!(tmps2 = fbm_instr((unsigned char*)tmps + offset,
1778 (unsigned char*)tmps + biglen, little)))
1779 retval = -1 + arybase;
1781 retval = tmps2 - tmps + arybase;
1798 I32 arybase = curcop->cop_arybase;
1804 tmps2 = SvPV(little, llen);
1805 tmps = SvPV(big, blen);
1809 offset = SvIV(offstr) - arybase + llen;
1812 else if (offset > blen)
1814 if (!(tmps2 = rninstr(tmps, tmps + offset,
1815 tmps2, tmps2 + llen)))
1816 retval = -1 + arybase;
1818 retval = tmps2 - tmps + arybase;
1825 dSP; dMARK; dORIGMARK; dTARGET;
1826 #ifdef USE_LOCALE_NUMERIC
1827 if (op->op_private & OPpLOCALE)
1828 SET_NUMERIC_LOCAL();
1830 SET_NUMERIC_STANDARD();
1832 do_sprintf(TARG, SP-MARK, MARK+1);
1833 TAINT_IF(SvTAINTED(TARG));
1847 value = (I32) (*tmps & 255);
1852 value = (I32) (anum & 255);
1863 (void)SvUPGRADE(TARG,SVt_PV);
1869 (void)SvPOK_only(TARG);
1876 dSP; dTARGET; dPOPTOPssrl;
1878 char *tmps = SvPV(left, na);
1880 sv_setpv(TARG, fcrypt(tmps, SvPV(right, na)));
1882 sv_setpv(TARG, crypt(tmps, SvPV(right, na)));
1886 "The crypt() function is unimplemented due to excessive paranoia.");
1898 if (!SvPADTMP(sv)) {
1904 s = SvPV_force(sv, na);
1906 if (op->op_private & OPpLOCALE) {
1909 *s = toUPPER_LC(*s);
1924 if (!SvPADTMP(sv)) {
1930 s = SvPV_force(sv, na);
1932 if (op->op_private & OPpLOCALE) {
1935 *s = toLOWER_LC(*s);
1952 if (!SvPADTMP(sv)) {
1959 s = SvPV_force(sv, len);
1961 register char *send = s + len;
1963 if (op->op_private & OPpLOCALE) {
1966 for (; s < send; s++)
1967 *s = toUPPER_LC(*s);
1970 for (; s < send; s++)
1984 if (!SvPADTMP(sv)) {
1991 s = SvPV_force(sv, len);
1993 register char *send = s + len;
1995 if (op->op_private & OPpLOCALE) {
1998 for (; s < send; s++)
1999 *s = toLOWER_LC(*s);
2002 for (; s < send; s++)
2014 register char *s = SvPV(sv,len);
2018 (void)SvUPGRADE(TARG, SVt_PV);
2019 SvGROW(TARG, (len * 2) + 1);
2027 SvCUR_set(TARG, d - SvPVX(TARG));
2028 (void)SvPOK_only(TARG);
2031 sv_setpvn(TARG, s, len);
2040 dSP; dMARK; dORIGMARK;
2042 register AV* av = (AV*)POPs;
2043 register I32 lval = op->op_flags & OPf_MOD;
2044 I32 arybase = curcop->cop_arybase;
2047 if (SvTYPE(av) == SVt_PVAV) {
2048 if (lval && op->op_private & OPpLVAL_INTRO) {
2050 for (svp = mark + 1; svp <= sp; svp++) {
2055 if (max > AvMAX(av))
2058 while (++MARK <= SP) {
2059 elem = SvIVx(*MARK);
2063 svp = av_fetch(av, elem, lval);
2065 if (!svp || *svp == &sv_undef)
2066 DIE(no_aelem, elem);
2067 if (op->op_private & OPpLVAL_INTRO)
2070 *MARK = svp ? *svp : &sv_undef;
2073 if (GIMME != G_ARRAY) {
2081 /* Associative arrays. */
2086 HV *hash = (HV*)POPs;
2088 I32 gimme = GIMME_V;
2089 I32 realhv = (SvTYPE(hash) == SVt_PVHV);
2092 /* might clobber stack_sp */
2093 entry = realhv ? hv_iternext(hash) : avhv_iternext((AV*)hash);
2098 PUSHs(hv_iterkeysv(entry)); /* won't clobber stack_sp */
2099 if (gimme == G_ARRAY) {
2101 /* might clobber stack_sp */
2102 sv_setsv(TARG, realhv ?
2103 hv_iterval(hash, entry) : avhv_iterval((AV*)hash, entry));
2108 else if (gimme == G_SCALAR)
2127 I32 gimme = GIMME_V;
2128 I32 discard = (gimme == G_VOID) ? G_DISCARD : 0;
2132 if (op->op_private & OPpSLICE) {
2136 hvtype = SvTYPE(hv);
2137 while (++MARK <= SP) {
2138 if (hvtype == SVt_PVHV)
2139 sv = hv_delete_ent(hv, *MARK, discard, 0);
2140 else if (hvtype == SVt_PVAV)
2141 sv = avhv_delete_ent((AV*)hv, *MARK, discard, 0);
2143 DIE("Not a HASH reference");
2144 *MARK = sv ? sv : &sv_undef;
2148 else if (gimme == G_SCALAR) {
2157 if (SvTYPE(hv) == SVt_PVHV)
2158 sv = hv_delete_ent(hv, keysv, discard, 0);
2159 else if (SvTYPE(hv) == SVt_PVAV)
2160 sv = avhv_delete_ent((AV*)hv, keysv, discard, 0);
2162 DIE("Not a HASH reference");
2176 if (SvTYPE(hv) == SVt_PVHV) {
2177 if (hv_exists_ent(hv, tmpsv, 0))
2179 } else if (SvTYPE(hv) == SVt_PVAV) {
2180 if (avhv_exists_ent((AV*)hv, tmpsv, 0))
2183 DIE("Not a HASH reference");
2190 dSP; dMARK; dORIGMARK;
2192 register HV *hv = (HV*)POPs;
2193 register I32 lval = op->op_flags & OPf_MOD;
2194 I32 realhv = (SvTYPE(hv) == SVt_PVHV);
2196 if (realhv || SvTYPE(hv) == SVt_PVAV) {
2197 while (++MARK <= SP) {
2201 he = hv_fetch_ent(hv, keysv, lval, 0);
2202 svp = he ? &HeVAL(he) : 0;
2204 svp = avhv_fetch_ent((AV*)hv, keysv, lval, 0);
2207 if (!he || HeVAL(he) == &sv_undef)
2208 DIE(no_helem, SvPV(keysv, na));
2209 if (op->op_private & OPpLVAL_INTRO)
2210 save_svref(&HeVAL(he));
2212 *MARK = he ? HeVAL(he) : &sv_undef;
2215 if (GIMME != G_ARRAY) {
2223 /* List operators. */
2228 if (GIMME != G_ARRAY) {
2230 *MARK = *SP; /* unwanted list, return last item */
2241 SV **lastrelem = stack_sp;
2242 SV **lastlelem = stack_base + POPMARK;
2243 SV **firstlelem = stack_base + POPMARK + 1;
2244 register SV **firstrelem = lastlelem + 1;
2245 I32 arybase = curcop->cop_arybase;
2246 I32 lval = op->op_flags & OPf_MOD;
2247 I32 is_something_there = lval;
2249 register I32 max = lastrelem - lastlelem;
2250 register SV **lelem;
2253 if (GIMME != G_ARRAY) {
2254 ix = SvIVx(*lastlelem);
2259 if (ix < 0 || ix >= max)
2260 *firstlelem = &sv_undef;
2262 *firstlelem = firstrelem[ix];
2268 SP = firstlelem - 1;
2272 for (lelem = firstlelem; lelem <= lastlelem; lelem++) {
2278 else if (!(*lelem = firstrelem[ix]))
2283 if (ix >= max || !(*lelem = firstrelem[ix]))
2286 if (!is_something_there && (SvOK(*lelem) || SvGMAGICAL(*lelem)))
2287 is_something_there = TRUE;
2289 if (is_something_there)
2292 SP = firstlelem - 1;
2298 dSP; dMARK; dORIGMARK;
2299 I32 items = SP - MARK;
2300 SV *av = sv_2mortal((SV*)av_make(items, MARK+1));
2301 SP = ORIGMARK; /* av_make() might realloc stack_sp */
2308 dSP; dMARK; dORIGMARK;
2309 HV* hv = (HV*)sv_2mortal((SV*)newHV());
2313 SV *val = NEWSV(46, 0);
2315 sv_setsv(val, *++MARK);
2317 warn("Odd number of elements in hash list");
2318 (void)hv_store_ent(hv,key,val,0);
2327 dSP; dMARK; dORIGMARK;
2328 register AV *ary = (AV*)*++MARK;
2332 register I32 offset;
2333 register I32 length;
2342 offset = SvIVx(*MARK);
2344 offset += AvFILL(ary) + 1;
2346 offset -= curcop->cop_arybase;
2348 length = SvIVx(*MARK++);
2353 length = AvMAX(ary) + 1; /* close enough to infinity */
2357 length = AvMAX(ary) + 1;
2365 if (offset > AvFILL(ary) + 1)
2366 offset = AvFILL(ary) + 1;
2367 after = AvFILL(ary) + 1 - (offset + length);
2368 if (after < 0) { /* not that much array */
2369 length += after; /* offset+length now in array */
2375 /* At this point, MARK .. SP-1 is our new LIST */
2378 diff = newlen - length;
2380 if (diff < 0) { /* shrinking the area */
2382 New(451, tmparyval, newlen, SV*); /* so remember insertion */
2383 Copy(MARK, tmparyval, newlen, SV*);
2386 MARK = ORIGMARK + 1;
2387 if (GIMME == G_ARRAY) { /* copy return vals to stack */
2388 MEXTEND(MARK, length);
2389 Copy(AvARRAY(ary)+offset, MARK, length, SV*);
2391 EXTEND_MORTAL(length);
2392 for (i = length, dst = MARK; i; i--) {
2393 if (!SvIMMORTAL(*dst))
2394 sv_2mortal(*dst); /* free them eventualy */
2401 *MARK = AvARRAY(ary)[offset+length-1];
2403 if (!SvIMMORTAL(*MARK))
2405 for (i = length - 1, dst = &AvARRAY(ary)[offset]; i > 0; i--)
2406 SvREFCNT_dec(*dst++); /* free them now */
2409 AvFILL(ary) += diff;
2411 /* pull up or down? */
2413 if (offset < after) { /* easier to pull up */
2414 if (offset) { /* esp. if nothing to pull */
2415 src = &AvARRAY(ary)[offset-1];
2416 dst = src - diff; /* diff is negative */
2417 for (i = offset; i > 0; i--) /* can't trust Copy */
2421 SvPVX(ary) = (char*)(AvARRAY(ary) - diff); /* diff is negative */
2425 if (after) { /* anything to pull down? */
2426 src = AvARRAY(ary) + offset + length;
2427 dst = src + diff; /* diff is negative */
2428 Move(src, dst, after, SV*);
2430 dst = &AvARRAY(ary)[AvFILL(ary)+1];
2431 /* avoid later double free */
2435 dst[--i] = &sv_undef;
2438 for (src = tmparyval, dst = AvARRAY(ary) + offset;
2440 *dst = NEWSV(46, 0);
2441 sv_setsv(*dst++, *src++);
2443 Safefree(tmparyval);
2446 else { /* no, expanding (or same) */
2448 New(452, tmparyval, length, SV*); /* so remember deletion */
2449 Copy(AvARRAY(ary)+offset, tmparyval, length, SV*);
2452 if (diff > 0) { /* expanding */
2454 /* push up or down? */
2456 if (offset < after && diff <= AvARRAY(ary) - AvALLOC(ary)) {
2460 Move(src, dst, offset, SV*);
2462 SvPVX(ary) = (char*)(AvARRAY(ary) - diff);/* diff is positive */
2464 AvFILL(ary) += diff;
2467 if (AvFILL(ary) + diff >= AvMAX(ary)) /* oh, well */
2468 av_extend(ary, AvFILL(ary) + diff);
2469 AvFILL(ary) += diff;
2472 dst = AvARRAY(ary) + AvFILL(ary);
2474 for (i = after; i; i--) {
2481 for (src = MARK, dst = AvARRAY(ary) + offset; newlen; newlen--) {
2482 *dst = NEWSV(46, 0);
2483 sv_setsv(*dst++, *src++);
2485 MARK = ORIGMARK + 1;
2486 if (GIMME == G_ARRAY) { /* copy return vals to stack */
2488 Copy(tmparyval, MARK, length, SV*);
2490 EXTEND_MORTAL(length);
2491 for (i = length, dst = MARK; i; i--) {
2492 if (!SvIMMORTAL(*dst))
2493 sv_2mortal(*dst); /* free them eventualy */
2497 Safefree(tmparyval);
2501 else if (length--) {
2502 *MARK = tmparyval[length];
2504 if (!SvIMMORTAL(*MARK))
2506 while (length-- > 0)
2507 SvREFCNT_dec(tmparyval[length]);
2509 Safefree(tmparyval);
2520 dSP; dMARK; dORIGMARK; dTARGET;
2521 register AV *ary = (AV*)*++MARK;
2522 register SV *sv = &sv_undef;
2524 for (++MARK; MARK <= SP; MARK++) {
2527 sv_setsv(sv, *MARK);
2531 PUSHi( AvFILL(ary) + 1 );
2539 SV *sv = av_pop(av);
2540 if (!SvIMMORTAL(sv) && AvREAL(av))
2541 (void)sv_2mortal(sv);
2550 SV *sv = av_shift(av);
2554 if (!SvIMMORTAL(sv) && AvREAL(av))
2555 (void)sv_2mortal(sv);
2562 dSP; dMARK; dORIGMARK; dTARGET;
2563 register AV *ary = (AV*)*++MARK;
2567 av_unshift(ary, SP - MARK);
2570 sv_setsv(sv, *++MARK);
2571 (void)av_store(ary, i++, sv);
2575 PUSHi( AvFILL(ary) + 1 );
2585 if (GIMME == G_ARRAY) {
2596 register char *down;
2602 do_join(TARG, &sv_no, MARK, SP);
2604 sv_setsv(TARG, (SP > MARK) ? *SP : GvSV(defgv));
2605 up = SvPV_force(TARG, len);
2607 down = SvPVX(TARG) + len - 1;
2613 (void)SvPOK_only(TARG);
2627 char *s = SvPV(sv, len);
2631 if (!strnEQ(s, "0000", 4)) { /* need to grow sv */
2632 SV *new = newSVpv("0000000000", 10);
2635 SvREFCNT_dec(sv); /* free old sv */
2640 while (!*t) /* trailing '\0'? */
2643 i = ((*t - '0') << 7) + m;
2644 *(t--) = '0' + (i % 10);
2650 /* Explosives and implosives. */
2657 I32 gimme = GIMME_V;
2661 register char *pat = SvPV(left, llen);
2662 register char *s = SvPV(right, rlen);
2663 char *strend = s + rlen;
2665 register char *patend = pat + llen;
2670 /* These must not be in registers: */
2681 unsigned Quad_t auquad;
2687 register U32 culong;
2689 static char* bitcount = 0;
2691 if (gimme != G_ARRAY) { /* arrange to do first one only */
2693 for (patend = pat; !isALPHA(*patend) || *patend == 'x'; patend++) ;
2694 if (strchr("aAbBhHP", *patend) || *pat == '%') {
2696 while (isDIGIT(*patend) || *patend == '*')
2702 while (pat < patend) {
2704 datumtype = *pat++ & 0xFF;
2705 if (isSPACE(datumtype))
2709 else if (*pat == '*') {
2710 len = strend - strbeg; /* long enough */
2713 else if (isDIGIT(*pat)) {
2715 while (isDIGIT(*pat))
2716 len = (len * 10) + (*pat++ - '0');
2719 len = (datumtype != '@');
2722 croak("Invalid type in unpack: '%c'", (int)datumtype);
2724 if (len == 1 && pat[-1] != '1')
2733 if (len > strend - strbeg)
2734 DIE("@ outside of string");
2738 if (len > s - strbeg)
2739 DIE("X outside of string");
2743 if (len > strend - s)
2744 DIE("x outside of string");
2749 if (len > strend - s)
2752 goto uchar_checksum;
2753 sv = NEWSV(35, len);
2754 sv_setpvn(sv, s, len);
2756 if (datumtype == 'A') {
2757 aptr = s; /* borrow register */
2758 s = SvPVX(sv) + len - 1;
2759 while (s >= SvPVX(sv) && (!*s || isSPACE(*s)))
2762 SvCUR_set(sv, s - SvPVX(sv));
2763 s = aptr; /* unborrow register */
2765 XPUSHs(sv_2mortal(sv));
2769 if (pat[-1] == '*' || len > (strend - s) * 8)
2770 len = (strend - s) * 8;
2773 Newz(601, bitcount, 256, char);
2774 for (bits = 1; bits < 256; bits++) {
2775 if (bits & 1) bitcount[bits]++;
2776 if (bits & 2) bitcount[bits]++;
2777 if (bits & 4) bitcount[bits]++;
2778 if (bits & 8) bitcount[bits]++;
2779 if (bits & 16) bitcount[bits]++;
2780 if (bits & 32) bitcount[bits]++;
2781 if (bits & 64) bitcount[bits]++;
2782 if (bits & 128) bitcount[bits]++;
2786 culong += bitcount[*(unsigned char*)s++];
2791 if (datumtype == 'b') {
2793 if (bits & 1) culong++;
2799 if (bits & 128) culong++;
2806 sv = NEWSV(35, len + 1);
2809 aptr = pat; /* borrow register */
2811 if (datumtype == 'b') {
2813 for (len = 0; len < aint; len++) {
2814 if (len & 7) /*SUPPRESS 595*/
2818 *pat++ = '0' + (bits & 1);
2823 for (len = 0; len < aint; len++) {
2828 *pat++ = '0' + ((bits & 128) != 0);
2832 pat = aptr; /* unborrow register */
2833 XPUSHs(sv_2mortal(sv));
2837 if (pat[-1] == '*' || len > (strend - s) * 2)
2838 len = (strend - s) * 2;
2839 sv = NEWSV(35, len + 1);
2842 aptr = pat; /* borrow register */
2844 if (datumtype == 'h') {
2846 for (len = 0; len < aint; len++) {
2851 *pat++ = hexdigit[bits & 15];
2856 for (len = 0; len < aint; len++) {
2861 *pat++ = hexdigit[(bits >> 4) & 15];
2865 pat = aptr; /* unborrow register */
2866 XPUSHs(sv_2mortal(sv));
2869 if (len > strend - s)
2874 if (aint >= 128) /* fake up signed chars */
2884 if (aint >= 128) /* fake up signed chars */
2887 sv_setiv(sv, (IV)aint);
2888 PUSHs(sv_2mortal(sv));
2893 if (len > strend - s)
2908 sv_setiv(sv, (IV)auint);
2909 PUSHs(sv_2mortal(sv));
2914 along = (strend - s) / SIZE16;
2931 sv_setiv(sv, (IV)ashort);
2932 PUSHs(sv_2mortal(sv));
2939 along = (strend - s) / SIZE16;
2944 COPY16(s, &aushort);
2947 if (datumtype == 'n')
2948 aushort = ntohs(aushort);
2951 if (datumtype == 'v')
2952 aushort = vtohs(aushort);
2961 COPY16(s, &aushort);
2965 if (datumtype == 'n')
2966 aushort = ntohs(aushort);
2969 if (datumtype == 'v')
2970 aushort = vtohs(aushort);
2972 sv_setiv(sv, (IV)aushort);
2973 PUSHs(sv_2mortal(sv));
2978 along = (strend - s) / sizeof(int);
2983 Copy(s, &aint, 1, int);
2986 cdouble += (double)aint;
2995 Copy(s, &aint, 1, int);
2998 sv_setiv(sv, (IV)aint);
2999 PUSHs(sv_2mortal(sv));
3004 along = (strend - s) / sizeof(unsigned int);
3009 Copy(s, &auint, 1, unsigned int);
3010 s += sizeof(unsigned int);
3012 cdouble += (double)auint;
3021 Copy(s, &auint, 1, unsigned int);
3022 s += sizeof(unsigned int);
3024 sv_setuv(sv, (UV)auint);
3025 PUSHs(sv_2mortal(sv));
3030 along = (strend - s) / SIZE32;
3038 cdouble += (double)along;
3050 sv_setiv(sv, (IV)along);
3051 PUSHs(sv_2mortal(sv));
3058 along = (strend - s) / SIZE32;
3066 if (datumtype == 'N')
3067 aulong = ntohl(aulong);
3070 if (datumtype == 'V')
3071 aulong = vtohl(aulong);
3074 cdouble += (double)aulong;
3086 if (datumtype == 'N')
3087 aulong = ntohl(aulong);
3090 if (datumtype == 'V')
3091 aulong = vtohl(aulong);
3094 sv_setuv(sv, (UV)aulong);
3095 PUSHs(sv_2mortal(sv));
3100 along = (strend - s) / sizeof(char*);
3106 if (sizeof(char*) > strend - s)
3109 Copy(s, &aptr, 1, char*);
3115 PUSHs(sv_2mortal(sv));
3125 while ((len > 0) && (s < strend)) {
3126 auv = (auv << 7) | (*s & 0x7f);
3127 if (!(*s++ & 0x80)) {
3131 PUSHs(sv_2mortal(sv));
3135 else if (++bytes >= sizeof(UV)) { /* promote to string */
3138 sv = newSVpvf("%.*Vu", (int)TYPE_DIGITS(UV), auv);
3139 while (s < strend) {
3140 sv = mul128(sv, *s & 0x7f);
3141 if (!(*s++ & 0x80)) {
3150 PUSHs(sv_2mortal(sv));
3155 if ((s >= strend) && bytes)
3156 croak("Unterminated compressed integer");
3161 if (sizeof(char*) > strend - s)
3164 Copy(s, &aptr, 1, char*);
3169 sv_setpvn(sv, aptr, len);
3170 PUSHs(sv_2mortal(sv));
3177 if (s + sizeof(Quad_t) > strend)
3180 Copy(s, &aquad, 1, Quad_t);
3181 s += sizeof(Quad_t);
3184 if (aquad >= IV_MIN && aquad <= IV_MAX)
3185 sv_setiv(sv, (IV)aquad);
3187 sv_setnv(sv, (double)aquad);
3188 PUSHs(sv_2mortal(sv));
3195 if (s + sizeof(unsigned Quad_t) > strend)
3198 Copy(s, &auquad, 1, unsigned Quad_t);
3199 s += sizeof(unsigned Quad_t);
3202 if (aquad <= UV_MAX)
3203 sv_setuv(sv, (UV)auquad);
3205 sv_setnv(sv, (double)auquad);
3206 PUSHs(sv_2mortal(sv));
3210 /* float and double added gnb@melba.bby.oz.au 22/11/89 */
3213 along = (strend - s) / sizeof(float);
3218 Copy(s, &afloat, 1, float);
3227 Copy(s, &afloat, 1, float);
3230 sv_setnv(sv, (double)afloat);
3231 PUSHs(sv_2mortal(sv));
3237 along = (strend - s) / sizeof(double);
3242 Copy(s, &adouble, 1, double);
3243 s += sizeof(double);
3251 Copy(s, &adouble, 1, double);
3252 s += sizeof(double);
3254 sv_setnv(sv, (double)adouble);
3255 PUSHs(sv_2mortal(sv));
3260 along = (strend - s) * 3 / 4;
3261 sv = NEWSV(42, along);
3264 while (s < strend && *s > ' ' && *s < 'a') {
3269 len = (*s++ - ' ') & 077;
3271 if (s < strend && *s >= ' ')
3272 a = (*s++ - ' ') & 077;
3275 if (s < strend && *s >= ' ')
3276 b = (*s++ - ' ') & 077;
3279 if (s < strend && *s >= ' ')
3280 c = (*s++ - ' ') & 077;
3283 if (s < strend && *s >= ' ')
3284 d = (*s++ - ' ') & 077;
3287 hunk[0] = a << 2 | b >> 4;
3288 hunk[1] = b << 4 | c >> 2;
3289 hunk[2] = c << 6 | d;
3290 sv_catpvn(sv, hunk, len > 3 ? 3 : len);
3295 else if (s[1] == '\n') /* possible checksum byte */
3298 XPUSHs(sv_2mortal(sv));
3303 if (strchr("fFdD", datumtype) ||
3304 (checksum > 32 && strchr("iIlLN", datumtype)) ) {
3308 while (checksum >= 16) {
3312 while (checksum >= 4) {
3318 along = (1 << checksum) - 1;
3319 while (cdouble < 0.0)
3321 cdouble = modf(cdouble / adouble, &trouble) * adouble;
3322 sv_setnv(sv, cdouble);
3325 if (checksum < 32) {
3326 aulong = (1 << checksum) - 1;
3329 sv_setuv(sv, (UV)culong);
3331 XPUSHs(sv_2mortal(sv));
3335 if (sp == oldsp && gimme == G_SCALAR)
3341 doencodes(sv, s, len)
3349 sv_catpvn(sv, hunk, 1);
3352 hunk[0] = ' ' + (077 & (*s >> 2));
3353 hunk[1] = ' ' + (077 & ((*s << 4) & 060 | (s[1] >> 4) & 017));
3354 hunk[2] = ' ' + (077 & ((s[1] << 2) & 074 | (s[2] >> 6) & 03));
3355 hunk[3] = ' ' + (077 & (s[2] & 077));
3356 sv_catpvn(sv, hunk, 4);
3360 for (s = SvPVX(sv); *s; s++) {
3364 sv_catpvn(sv, "\n", 1);
3372 SV *result = newSVpv("", l);
3373 char *result_c = SvPV(result, na); /* convenience */
3374 char *out = result_c;
3384 SvREFCNT_dec(result);
3407 SvREFCNT_dec(result);
3413 SvCUR_set(result, out - result_c);
3419 SV *pnum; /* must be '\0' terminated */
3423 char *s = SvPV(pnum, len);
3432 i = m * 10 + (*t - '0');
3434 r = (i >> 7); /* r < 10 */
3441 SvCUR_set(pnum, (STRLEN) (t - s));
3448 dSP; dMARK; dORIGMARK; dTARGET;
3449 register SV *cat = TARG;
3452 register char *pat = SvPVx(*++MARK, fromlen);
3453 register char *patend = pat + fromlen;
3458 static char null10[] = {0,0,0,0,0,0,0,0,0,0};
3459 static char *space10 = " ";
3461 /* These must not be in registers: */
3470 unsigned Quad_t auquad;
3478 sv_setpvn(cat, "", 0);
3479 while (pat < patend) {
3480 #define NEXTFROM (items-- > 0 ? *MARK++ : &sv_no)
3481 datumtype = *pat++ & 0xFF;
3482 if (isSPACE(datumtype))
3485 len = strchr("@Xxu", datumtype) ? 0 : items;
3488 else if (isDIGIT(*pat)) {
3490 while (isDIGIT(*pat))
3491 len = (len * 10) + (*pat++ - '0');
3497 croak("Invalid type in pack: '%c'", (int)datumtype);
3499 DIE("%% may only be used in unpack");
3510 if (SvCUR(cat) < len)
3511 DIE("X outside of string");
3518 sv_catpvn(cat, null10, 10);
3521 sv_catpvn(cat, null10, len);
3526 aptr = SvPV(fromstr, fromlen);
3530 sv_catpvn(cat, aptr, len);
3532 sv_catpvn(cat, aptr, fromlen);
3534 if (datumtype == 'A') {
3536 sv_catpvn(cat, space10, 10);
3539 sv_catpvn(cat, space10, len);
3543 sv_catpvn(cat, null10, 10);
3546 sv_catpvn(cat, null10, len);
3553 char *savepat = pat;
3558 aptr = SvPV(fromstr, fromlen);
3563 SvCUR(cat) += (len+7)/8;
3564 SvGROW(cat, SvCUR(cat) + 1);
3565 aptr = SvPVX(cat) + aint;
3570 if (datumtype == 'B') {
3571 for (len = 0; len++ < aint;) {
3572 items |= *pat++ & 1;
3576 *aptr++ = items & 0xff;
3582 for (len = 0; len++ < aint;) {
3588 *aptr++ = items & 0xff;
3594 if (datumtype == 'B')
3595 items <<= 7 - (aint & 7);
3597 items >>= 7 - (aint & 7);
3598 *aptr++ = items & 0xff;
3600 pat = SvPVX(cat) + SvCUR(cat);
3611 char *savepat = pat;
3616 aptr = SvPV(fromstr, fromlen);
3621 SvCUR(cat) += (len+1)/2;
3622 SvGROW(cat, SvCUR(cat) + 1);
3623 aptr = SvPVX(cat) + aint;
3628 if (datumtype == 'H') {
3629 for (len = 0; len++ < aint;) {
3631 items |= ((*pat++ & 15) + 9) & 15;
3633 items |= *pat++ & 15;
3637 *aptr++ = items & 0xff;
3643 for (len = 0; len++ < aint;) {
3645 items |= (((*pat++ & 15) + 9) & 15) << 4;
3647 items |= (*pat++ & 15) << 4;
3651 *aptr++ = items & 0xff;
3657 *aptr++ = items & 0xff;
3658 pat = SvPVX(cat) + SvCUR(cat);
3670 aint = SvIV(fromstr);
3672 sv_catpvn(cat, &achar, sizeof(char));
3675 /* Float and double added by gnb@melba.bby.oz.au 22/11/89 */
3680 afloat = (float)SvNV(fromstr);
3681 sv_catpvn(cat, (char *)&afloat, sizeof (float));
3688 adouble = (double)SvNV(fromstr);
3689 sv_catpvn(cat, (char *)&adouble, sizeof (double));
3695 ashort = (I16)SvIV(fromstr);
3697 ashort = htons(ashort);
3699 CAT16(cat, &ashort);
3705 ashort = (I16)SvIV(fromstr);
3707 ashort = htovs(ashort);
3709 CAT16(cat, &ashort);
3716 ashort = (I16)SvIV(fromstr);
3717 CAT16(cat, &ashort);
3723 auint = SvUV(fromstr);
3724 sv_catpvn(cat, (char*)&auint, sizeof(unsigned int));
3730 adouble = floor(SvNV(fromstr));
3733 croak("Cannot compress negative numbers");
3743 char buf[1 + sizeof(UV)];
3744 char *in = buf + sizeof(buf);
3745 UV auv = U_V(adouble);;
3748 *--in = (auv & 0x7f) | 0x80;
3751 buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */
3752 sv_catpvn(cat, in, (buf + sizeof(buf)) - in);
3754 else if (SvPOKp(fromstr)) { /* decimal string arithmetics */
3755 char *from, *result, *in;
3760 /* Copy string and check for compliance */
3761 from = SvPV(fromstr, len);
3762 if ((norm = is_an_int(from, len)) == NULL)
3763 croak("can compress only unsigned integer");
3765 New('w', result, len, char);
3769 *--in = div128(norm, &done) | 0x80;
3770 result[len - 1] &= 0x7F; /* clear continue bit */
3771 sv_catpvn(cat, in, (result + len) - in);
3773 SvREFCNT_dec(norm); /* free norm */
3775 else if (SvNOKp(fromstr)) {
3776 char buf[sizeof(double) * 2]; /* 8/7 <= 2 */
3777 char *in = buf + sizeof(buf);
3780 double next = floor(adouble / 128);
3781 *--in = (unsigned char)(adouble - (next * 128)) | 0x80;
3782 if (--in < buf) /* this cannot happen ;-) */
3783 croak ("Cannot compress integer");
3785 } while (adouble > 0);
3786 buf[sizeof(buf) - 1] &= 0x7f; /* clear continue bit */
3787 sv_catpvn(cat, in, (buf + sizeof(buf)) - in);
3790 croak("Cannot compress non integer");
3796 aint = SvIV(fromstr);
3797 sv_catpvn(cat, (char*)&aint, sizeof(int));
3803 aulong = SvUV(fromstr);
3805 aulong = htonl(aulong);
3807 CAT32(cat, &aulong);
3813 aulong = SvUV(fromstr);
3815 aulong = htovl(aulong);
3817 CAT32(cat, &aulong);
3823 aulong = SvUV(fromstr);
3824 CAT32(cat, &aulong);
3830 along = SvIV(fromstr);
3838 auquad = (unsigned Quad_t)SvIV(fromstr);
3839 sv_catpvn(cat, (char*)&auquad, sizeof(unsigned Quad_t));
3845 aquad = (Quad_t)SvIV(fromstr);
3846 sv_catpvn(cat, (char*)&aquad, sizeof(Quad_t));
3849 #endif /* HAS_QUAD */
3851 len = 1; /* assume SV is correct length */
3856 aptr = SvPV_force(fromstr, na); /* XXX Error if TEMP? */
3857 sv_catpvn(cat, (char*)&aptr, sizeof(char*));
3862 aptr = SvPV(fromstr, fromlen);
3863 SvGROW(cat, fromlen * 4 / 3);
3868 while (fromlen > 0) {
3875 doencodes(cat, aptr, todo);
3893 register I32 limit = POPi; /* note, negative is forever */
3896 register char *s = SvPV(sv, len);
3897 char *strend = s + len;
3899 register REGEXP *rx;
3903 I32 maxiters = (strend - s) + 10;
3906 I32 origlimit = limit;
3909 AV *oldstack = curstack;
3910 I32 gimme = GIMME_V;
3911 I32 oldsave = savestack_ix;
3914 Copy(&LvTARGOFF(POPs), &pm, 1, PMOP*);
3919 DIE("panic: do_split");
3920 rx = pm->op_pmregexp;
3922 TAINT_IF((pm->op_pmflags & PMf_LOCALE) &&
3923 (pm->op_pmflags & (PMf_WHITE | PMf_SKIPWHITE)));
3925 if (pm->op_pmreplroot)
3926 ary = GvAVn((GV*)pm->op_pmreplroot);
3927 else if (gimme != G_ARRAY)
3931 if (ary && (gimme != G_ARRAY || (pm->op_pmflags & PMf_ONCE))) {
3935 for (i = AvFILL(ary); i >= 0; i--)
3936 AvARRAY(ary)[i] = &sv_undef; /* don't free mere refs */
3940 /* temporarily switch stacks */
3941 SWITCHSTACK(curstack, ary);
3943 base = SP - stack_base;
3945 if (pm->op_pmflags & PMf_SKIPWHITE) {
3946 if (pm->op_pmflags & PMf_LOCALE) {
3947 while (isSPACE_LC(*s))
3955 if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) {
3957 multiline = pm->op_pmflags & PMf_MULTILINE;
3961 limit = maxiters + 2;
3962 if (pm->op_pmflags & PMf_WHITE) {
3965 while (m < strend &&
3966 !((pm->op_pmflags & PMf_LOCALE)
3967 ? isSPACE_LC(*m) : isSPACE(*m)))
3972 dstr = NEWSV(30, m-s);
3973 sv_setpvn(dstr, s, m-s);
3979 while (s < strend &&
3980 ((pm->op_pmflags & PMf_LOCALE)
3981 ? isSPACE_LC(*s) : isSPACE(*s)))
3985 else if (strEQ("^", rx->precomp)) {
3988 for (m = s; m < strend && *m != '\n'; m++) ;
3992 dstr = NEWSV(30, m-s);
3993 sv_setpvn(dstr, s, m-s);
4000 else if (pm->op_pmshort && !rx->nparens) {
4001 i = SvCUR(pm->op_pmshort);
4003 i = *SvPVX(pm->op_pmshort);
4006 for (m = s; m < strend && *m != i; m++) ;
4009 dstr = NEWSV(30, m-s);
4010 sv_setpvn(dstr, s, m-s);
4019 while (s < strend && --limit &&
4020 (m=fbm_instr((unsigned char*)s, (unsigned char*)strend,
4024 dstr = NEWSV(31, m-s);
4025 sv_setpvn(dstr, s, m-s);
4034 maxiters += (strend - s) * rx->nparens;
4035 while (s < strend && --limit &&
4036 pregexec(rx, s, strend, orig, 1, Nullsv, TRUE))
4038 TAINT_IF(rx->exec_tainted);
4040 && rx->subbase != orig) {
4045 strend = s + (strend - m);
4048 dstr = NEWSV(32, m-s);
4049 sv_setpvn(dstr, s, m-s);
4054 for (i = 1; i <= rx->nparens; i++) {
4058 dstr = NEWSV(33, m-s);
4059 sv_setpvn(dstr, s, m-s);
4062 dstr = NEWSV(33, 0);
4071 LEAVE_SCOPE(oldsave);
4072 iters = (SP - stack_base) - base;
4073 if (iters > maxiters)
4076 /* keep field after final delim? */
4077 if (s < strend || (iters && origlimit)) {
4078 dstr = NEWSV(34, strend-s);
4079 sv_setpvn(dstr, s, strend-s);
4085 else if (!origlimit) {
4086 while (iters > 0 && (!TOPs || !SvANY(TOPs) || SvCUR(TOPs) == 0))
4090 SWITCHSTACK(ary, oldstack);
4091 if (gimme == G_ARRAY) {
4093 Copy(AvARRAY(ary), SP + 1, iters, SV*);
4099 if (gimme == G_ARRAY)
4102 if (iters || !pm->op_pmreplroot) {