529 lines
11 KiB
C
529 lines
11 KiB
C
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/* doop.c
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*
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* Copyright (c) 1991-1997, Larry Wall
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*
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* You may distribute under the terms of either the GNU General Public
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* License or the Artistic License, as specified in the README file.
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*
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*/
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/*
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* "'So that was the job I felt I had to do when I started,' thought Sam."
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*/
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#include "EXTERN.h"
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#include "perl.h"
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#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
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#include <signal.h>
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#endif
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I32
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do_trans(SV *sv, OP *arg)
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{
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dTHR;
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register short *tbl;
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register U8 *s;
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register U8 *send;
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register U8 *d;
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register I32 ch;
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register I32 matches = 0;
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register I32 squash = PL_op->op_private & OPpTRANS_SQUASH;
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register U8 *p;
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STRLEN len;
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if (SvREADONLY(sv) && !(PL_op->op_private & OPpTRANS_COUNTONLY))
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croak(no_modify);
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tbl = (short*)cPVOP->op_pv;
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s = (U8*)SvPV(sv, len);
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if (!len)
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return 0;
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if (!SvPOKp(sv))
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s = (U8*)SvPV_force(sv, len);
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(void)SvPOK_only(sv);
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send = s + len;
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if (!tbl || !s)
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croak("panic: do_trans");
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DEBUG_t( deb("2.TBL\n"));
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if (!PL_op->op_private) {
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while (s < send) {
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if ((ch = tbl[*s]) >= 0) {
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matches++;
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*s = ch;
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}
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s++;
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}
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SvSETMAGIC(sv);
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}
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else if (PL_op->op_private & OPpTRANS_COUNTONLY) {
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while (s < send) {
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if (tbl[*s] >= 0)
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matches++;
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s++;
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}
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}
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else {
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d = s;
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p = send;
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while (s < send) {
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if ((ch = tbl[*s]) >= 0) {
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*d = ch;
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matches++;
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if (squash) {
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if (p == d - 1 && *p == *d)
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matches--;
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else
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p = d++;
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}
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else
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d++;
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}
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else if (ch == -1) /* -1 is unmapped character */
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*d++ = *s; /* -2 is delete character */
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s++;
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}
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matches += send - d; /* account for disappeared chars */
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*d = '\0';
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SvCUR_set(sv, d - (U8*)SvPVX(sv));
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SvSETMAGIC(sv);
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}
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return matches;
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}
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void
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do_join(register SV *sv, SV *del, register SV **mark, register SV **sp)
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{
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SV **oldmark = mark;
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register I32 items = sp - mark;
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register STRLEN len;
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STRLEN delimlen;
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register char *delim = SvPV(del, delimlen);
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STRLEN tmplen;
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mark++;
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len = (items > 0 ? (delimlen * (items - 1) ) : 0);
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if (SvTYPE(sv) < SVt_PV)
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sv_upgrade(sv, SVt_PV);
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if (SvLEN(sv) < len + items) { /* current length is way too short */
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while (items-- > 0) {
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if (*mark && !SvGMAGICAL(*mark) && SvOK(*mark)) {
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SvPV(*mark, tmplen);
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len += tmplen;
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}
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mark++;
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}
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SvGROW(sv, len + 1); /* so try to pre-extend */
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mark = oldmark;
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items = sp - mark;;
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++mark;
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}
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if (items-- > 0) {
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char *s;
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if (*mark) {
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s = SvPV(*mark, tmplen);
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sv_setpvn(sv, s, tmplen);
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}
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else
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sv_setpv(sv, "");
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mark++;
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}
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else
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sv_setpv(sv,"");
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len = delimlen;
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if (len) {
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for (; items > 0; items--,mark++) {
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sv_catpvn(sv,delim,len);
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sv_catsv(sv,*mark);
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}
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}
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else {
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for (; items > 0; items--,mark++)
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sv_catsv(sv,*mark);
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}
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SvSETMAGIC(sv);
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}
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void
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do_sprintf(SV *sv, I32 len, SV **sarg)
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{
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STRLEN patlen;
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char *pat = SvPV(*sarg, patlen);
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bool do_taint = FALSE;
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sv_vsetpvfn(sv, pat, patlen, Null(va_list*), sarg + 1, len - 1, &do_taint);
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SvSETMAGIC(sv);
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if (do_taint)
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SvTAINTED_on(sv);
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}
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void
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do_vecset(SV *sv)
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{
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SV *targ = LvTARG(sv);
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register I32 offset;
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register I32 size;
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register unsigned char *s;
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register unsigned long lval;
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I32 mask;
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STRLEN targlen;
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STRLEN len;
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if (!targ)
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return;
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s = (unsigned char*)SvPV_force(targ, targlen);
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lval = U_L(SvNV(sv));
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offset = LvTARGOFF(sv);
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size = LvTARGLEN(sv);
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len = (offset + size + 7) / 8;
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if (len > targlen) {
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s = (unsigned char*)SvGROW(targ, len + 1);
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(void)memzero(s + targlen, len - targlen + 1);
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SvCUR_set(targ, len);
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}
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if (size < 8) {
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mask = (1 << size) - 1;
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size = offset & 7;
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lval &= mask;
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offset >>= 3;
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s[offset] &= ~(mask << size);
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s[offset] |= lval << size;
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}
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else {
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offset >>= 3;
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if (size == 8)
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s[offset] = lval & 255;
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else if (size == 16) {
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s[offset] = (lval >> 8) & 255;
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s[offset+1] = lval & 255;
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}
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else if (size == 32) {
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s[offset] = (lval >> 24) & 255;
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s[offset+1] = (lval >> 16) & 255;
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s[offset+2] = (lval >> 8) & 255;
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s[offset+3] = lval & 255;
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}
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}
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}
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void
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do_chop(register SV *astr, register SV *sv)
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{
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STRLEN len;
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char *s;
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if (SvTYPE(sv) == SVt_PVAV) {
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register I32 i;
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I32 max;
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AV* av = (AV*)sv;
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max = AvFILL(av);
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for (i = 0; i <= max; i++) {
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sv = (SV*)av_fetch(av, i, FALSE);
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if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef))
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do_chop(astr, sv);
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}
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return;
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}
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if (SvTYPE(sv) == SVt_PVHV) {
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HV* hv = (HV*)sv;
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HE* entry;
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(void)hv_iterinit(hv);
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/*SUPPRESS 560*/
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while (entry = hv_iternext(hv))
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do_chop(astr,hv_iterval(hv,entry));
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return;
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}
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s = SvPV(sv, len);
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if (len && !SvPOK(sv))
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s = SvPV_force(sv, len);
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if (s && len) {
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s += --len;
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sv_setpvn(astr, s, 1);
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*s = '\0';
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SvCUR_set(sv, len);
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SvNIOK_off(sv);
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}
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else
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sv_setpvn(astr, "", 0);
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SvSETMAGIC(sv);
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}
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I32
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do_chomp(register SV *sv)
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{
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dTHR;
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register I32 count;
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STRLEN len;
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char *s;
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if (RsSNARF(PL_rs))
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return 0;
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count = 0;
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if (SvTYPE(sv) == SVt_PVAV) {
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register I32 i;
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I32 max;
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AV* av = (AV*)sv;
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max = AvFILL(av);
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for (i = 0; i <= max; i++) {
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sv = (SV*)av_fetch(av, i, FALSE);
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if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef))
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count += do_chomp(sv);
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}
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return count;
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}
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if (SvTYPE(sv) == SVt_PVHV) {
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HV* hv = (HV*)sv;
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HE* entry;
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(void)hv_iterinit(hv);
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/*SUPPRESS 560*/
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while (entry = hv_iternext(hv))
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count += do_chomp(hv_iterval(hv,entry));
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return count;
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}
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s = SvPV(sv, len);
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if (len && !SvPOKp(sv))
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s = SvPV_force(sv, len);
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if (s && len) {
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s += --len;
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if (RsPARA(PL_rs)) {
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if (*s != '\n')
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goto nope;
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++count;
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while (len && s[-1] == '\n') {
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--len;
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--s;
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++count;
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}
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}
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else {
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STRLEN rslen;
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char *rsptr = SvPV(PL_rs, rslen);
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if (rslen == 1) {
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if (*s != *rsptr)
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goto nope;
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++count;
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}
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else {
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if (len < rslen - 1)
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goto nope;
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len -= rslen - 1;
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s -= rslen - 1;
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if (memNE(s, rsptr, rslen))
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goto nope;
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count += rslen;
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}
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}
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*s = '\0';
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SvCUR_set(sv, len);
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SvNIOK_off(sv);
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}
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nope:
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SvSETMAGIC(sv);
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return count;
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}
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void
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do_vop(I32 optype, SV *sv, SV *left, SV *right)
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{
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dTHR; /* just for taint */
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#ifdef LIBERAL
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register long *dl;
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register long *ll;
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register long *rl;
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#endif
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register char *dc;
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STRLEN leftlen;
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STRLEN rightlen;
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register char *lc;
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register char *rc;
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register I32 len;
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I32 lensave;
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char *lsave;
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char *rsave;
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if (sv != left || (optype != OP_BIT_AND && !SvOK(sv) && !SvGMAGICAL(sv)))
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sv_setpvn(sv, "", 0); /* avoid undef warning on |= and ^= */
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lsave = lc = SvPV(left, leftlen);
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rsave = rc = SvPV(right, rightlen);
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len = leftlen < rightlen ? leftlen : rightlen;
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lensave = len;
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if (SvOK(sv) || SvTYPE(sv) > SVt_PVMG) {
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dc = SvPV_force(sv, PL_na);
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if (SvCUR(sv) < len) {
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dc = SvGROW(sv, len + 1);
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(void)memzero(dc + SvCUR(sv), len - SvCUR(sv) + 1);
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}
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}
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else {
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I32 needlen = ((optype == OP_BIT_AND)
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? len : (leftlen > rightlen ? leftlen : rightlen));
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Newz(801, dc, needlen + 1, char);
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(void)sv_usepvn(sv, dc, needlen);
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dc = SvPVX(sv); /* sv_usepvn() calls Renew() */
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}
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SvCUR_set(sv, len);
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(void)SvPOK_only(sv);
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#ifdef LIBERAL
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if (len >= sizeof(long)*4 &&
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!((long)dc % sizeof(long)) &&
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!((long)lc % sizeof(long)) &&
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!((long)rc % sizeof(long))) /* It's almost always aligned... */
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{
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I32 remainder = len % (sizeof(long)*4);
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len /= (sizeof(long)*4);
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dl = (long*)dc;
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ll = (long*)lc;
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rl = (long*)rc;
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switch (optype) {
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case OP_BIT_AND:
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while (len--) {
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*dl++ = *ll++ & *rl++;
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*dl++ = *ll++ & *rl++;
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|
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*dl++ = *ll++ & *rl++;
|
||
|
|
*dl++ = *ll++ & *rl++;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case OP_BIT_XOR:
|
||
|
|
while (len--) {
|
||
|
|
*dl++ = *ll++ ^ *rl++;
|
||
|
|
*dl++ = *ll++ ^ *rl++;
|
||
|
|
*dl++ = *ll++ ^ *rl++;
|
||
|
|
*dl++ = *ll++ ^ *rl++;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case OP_BIT_OR:
|
||
|
|
while (len--) {
|
||
|
|
*dl++ = *ll++ | *rl++;
|
||
|
|
*dl++ = *ll++ | *rl++;
|
||
|
|
*dl++ = *ll++ | *rl++;
|
||
|
|
*dl++ = *ll++ | *rl++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
dc = (char*)dl;
|
||
|
|
lc = (char*)ll;
|
||
|
|
rc = (char*)rl;
|
||
|
|
|
||
|
|
len = remainder;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
{
|
||
|
|
switch (optype) {
|
||
|
|
case OP_BIT_AND:
|
||
|
|
while (len--)
|
||
|
|
*dc++ = *lc++ & *rc++;
|
||
|
|
break;
|
||
|
|
case OP_BIT_XOR:
|
||
|
|
while (len--)
|
||
|
|
*dc++ = *lc++ ^ *rc++;
|
||
|
|
goto mop_up;
|
||
|
|
case OP_BIT_OR:
|
||
|
|
while (len--)
|
||
|
|
*dc++ = *lc++ | *rc++;
|
||
|
|
mop_up:
|
||
|
|
len = lensave;
|
||
|
|
if (rightlen > len)
|
||
|
|
sv_catpvn(sv, rsave + len, rightlen - len);
|
||
|
|
else if (leftlen > len)
|
||
|
|
sv_catpvn(sv, lsave + len, leftlen - len);
|
||
|
|
else
|
||
|
|
*SvEND(sv) = '\0';
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
SvTAINT(sv);
|
||
|
|
}
|
||
|
|
|
||
|
|
OP *
|
||
|
|
do_kv(ARGSproto)
|
||
|
|
{
|
||
|
|
djSP;
|
||
|
|
HV *hv = (HV*)POPs;
|
||
|
|
HV *keys;
|
||
|
|
register HE *entry;
|
||
|
|
SV *tmpstr;
|
||
|
|
I32 gimme = GIMME_V;
|
||
|
|
I32 dokeys = (PL_op->op_type == OP_KEYS);
|
||
|
|
I32 dovalues = (PL_op->op_type == OP_VALUES);
|
||
|
|
I32 realhv = (SvTYPE(hv) == SVt_PVHV);
|
||
|
|
|
||
|
|
if (PL_op->op_type == OP_RV2HV || PL_op->op_type == OP_PADHV)
|
||
|
|
dokeys = dovalues = TRUE;
|
||
|
|
|
||
|
|
if (!hv) {
|
||
|
|
if (PL_op->op_flags & OPf_MOD) { /* lvalue */
|
||
|
|
dTARGET; /* make sure to clear its target here */
|
||
|
|
if (SvTYPE(TARG) == SVt_PVLV)
|
||
|
|
LvTARG(TARG) = Nullsv;
|
||
|
|
PUSHs(TARG);
|
||
|
|
}
|
||
|
|
RETURN;
|
||
|
|
}
|
||
|
|
|
||
|
|
keys = realhv ? hv : avhv_keys((AV*)hv);
|
||
|
|
(void)hv_iterinit(keys); /* always reset iterator regardless */
|
||
|
|
|
||
|
|
if (gimme == G_VOID)
|
||
|
|
RETURN;
|
||
|
|
|
||
|
|
if (gimme == G_SCALAR) {
|
||
|
|
IV i;
|
||
|
|
dTARGET;
|
||
|
|
|
||
|
|
if (PL_op->op_flags & OPf_MOD) { /* lvalue */
|
||
|
|
if (SvTYPE(TARG) < SVt_PVLV) {
|
||
|
|
sv_upgrade(TARG, SVt_PVLV);
|
||
|
|
sv_magic(TARG, Nullsv, 'k', Nullch, 0);
|
||
|
|
}
|
||
|
|
LvTYPE(TARG) = 'k';
|
||
|
|
if (LvTARG(TARG) != (SV*)keys) {
|
||
|
|
if (LvTARG(TARG))
|
||
|
|
SvREFCNT_dec(LvTARG(TARG));
|
||
|
|
LvTARG(TARG) = SvREFCNT_inc(keys);
|
||
|
|
}
|
||
|
|
PUSHs(TARG);
|
||
|
|
RETURN;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!SvRMAGICAL(keys) || !mg_find((SV*)keys,'P'))
|
||
|
|
i = HvKEYS(keys);
|
||
|
|
else {
|
||
|
|
i = 0;
|
||
|
|
/*SUPPRESS 560*/
|
||
|
|
while (hv_iternext(keys)) i++;
|
||
|
|
}
|
||
|
|
PUSHi( i );
|
||
|
|
RETURN;
|
||
|
|
}
|
||
|
|
|
||
|
|
EXTEND(SP, HvKEYS(keys) * (dokeys + dovalues));
|
||
|
|
|
||
|
|
PUTBACK; /* hv_iternext and hv_iterval might clobber stack_sp */
|
||
|
|
while (entry = hv_iternext(keys)) {
|
||
|
|
SPAGAIN;
|
||
|
|
if (dokeys)
|
||
|
|
XPUSHs(hv_iterkeysv(entry)); /* won't clobber stack_sp */
|
||
|
|
if (dovalues) {
|
||
|
|
tmpstr = sv_newmortal();
|
||
|
|
PUTBACK;
|
||
|
|
sv_setsv(tmpstr,realhv ?
|
||
|
|
hv_iterval(hv,entry) : avhv_iterval((AV*)hv,entry));
|
||
|
|
DEBUG_H(sv_setpvf(tmpstr, "%lu%%%d=%lu",
|
||
|
|
(unsigned long)HeHASH(entry),
|
||
|
|
HvMAX(keys)+1,
|
||
|
|
(unsigned long)(HeHASH(entry) & HvMAX(keys))));
|
||
|
|
SPAGAIN;
|
||
|
|
XPUSHs(tmpstr);
|
||
|
|
}
|
||
|
|
PUTBACK;
|
||
|
|
}
|
||
|
|
return NORMAL;
|
||
|
|
}
|
||
|
|
|