[perl5.git] / doop.c

/*    doop.c
 *
 *    Copyright (c) 1991-1997, Larry Wall
 *
 *    You may distribute under the terms of either the GNU General Public
 *    License or the Artistic License, as specified in the README file.
 *
 */

/*
 * "'So that was the job I felt I had to do when I started,' thought Sam."
 */

#include "EXTERN.h"
#include "perl.h"

#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
#include <signal.h>
#endif

I32
do_trans(sv,arg)
SV *sv;
OP *arg;
{
    dTHR;
    register short *tbl;
    register U8 *s;
    register U8 *send;
    register U8 *d;
    register I32 ch;
    register I32 matches = 0;
    register I32 squash = op->op_private & OPpTRANS_SQUASH;
    STRLEN len;

    if (SvREADONLY(sv))
	croak(no_modify);
    tbl = (short*)cPVOP->op_pv;
    s = (U8*)SvPV(sv, len);
    if (!len)
	return 0;
    if (!SvPOKp(sv))
	s = (U8*)SvPV_force(sv, len);
    (void)SvPOK_only(sv);
    send = s + len;
    if (!tbl || !s)
	croak("panic: do_trans");
    DEBUG_t( deb("2.TBL\n"));
    if (!op->op_private) {
	while (s < send) {
	    if ((ch = tbl[*s]) >= 0) {
		matches++;
		*s = ch;
	    }
	    s++;
	}
    }
    else {
	d = s;
	while (s < send) {
	    if ((ch = tbl[*s]) >= 0) {
		*d = ch;
		if (matches++ && squash) {
		    if (d[-1] == *d)
			matches--;
		    else
			d++;
		}
		else
		    d++;
	    }
	    else if (ch == -1)		/* -1 is unmapped character */
		*d++ = *s;		/* -2 is delete character */
	    s++;
	}
	matches += send - d;	/* account for disappeared chars */
	*d = '\0';
	SvCUR_set(sv, d - (U8*)SvPVX(sv));
    }
    SvSETMAGIC(sv);
    return matches;
}

void
do_join(sv,del,mark,sp)
register SV *sv;
SV *del;
register SV **mark;
register SV **sp;
{
    SV **oldmark = mark;
    register I32 items = sp - mark;
    register STRLEN len;
    STRLEN delimlen;
    register char *delim = SvPV(del, delimlen);
    STRLEN tmplen;

    mark++;
    len = (items > 0 ? (delimlen * (items - 1) ) : 0);
    if (SvTYPE(sv) < SVt_PV)
	sv_upgrade(sv, SVt_PV);
    if (SvLEN(sv) < len + items) {	/* current length is way too short */
	while (items-- > 0) {
	    if (*mark) {
		SvPV(*mark, tmplen);
		len += tmplen;
	    }
	    mark++;
	}
	SvGROW(sv, len + 1);		/* so try to pre-extend */

	mark = oldmark;
	items = sp - mark;;
	++mark;
    }

    if (items-- > 0) {
	char *s;

	if (*mark) {
	    s = SvPV(*mark, tmplen);
	    sv_setpvn(sv, s, tmplen);
	}
	else
	    sv_setpv(sv, "");
	mark++;
    }
    else
	sv_setpv(sv,"");
    len = delimlen;
    if (len) {
	for (; items > 0; items--,mark++) {
	    sv_catpvn(sv,delim,len);
	    sv_catsv(sv,*mark);
	}
    }
    else {
	for (; items > 0; items--,mark++)
	    sv_catsv(sv,*mark);
    }
    SvSETMAGIC(sv);
}

void
do_sprintf(sv,len,sarg)
SV *sv;
I32 len;
SV **sarg;
{
    STRLEN patlen;
    char *pat = SvPV(*sarg, patlen);
    bool do_taint = FALSE;

    sv_vsetpvfn(sv, pat, patlen, Null(va_list*), sarg + 1, len - 1, &do_taint);
    SvSETMAGIC(sv);
    if (do_taint)
	SvTAINTED_on(sv);
}

void
do_vecset(sv)
SV *sv;
{
    SV *targ = LvTARG(sv);
    register I32 offset;
    register I32 size;
    register unsigned char *s;
    register unsigned long lval;
    I32 mask;
    STRLEN targlen;
    STRLEN len;

    if (!targ)
	return;
    s = (unsigned char*)SvPV_force(targ, targlen);
    lval = U_L(SvNV(sv));
    offset = LvTARGOFF(sv);
    size = LvTARGLEN(sv);
    
    len = (offset + size + 7) / 8;
    if (len > targlen) {
	s = (unsigned char*)SvGROW(targ, len + 1);
	(void)memzero(s + targlen, len - targlen + 1);
	SvCUR_set(targ, len);
    }
    
    if (size < 8) {
	mask = (1 << size) - 1;
	size = offset & 7;
	lval &= mask;
	offset >>= 3;
	s[offset] &= ~(mask << size);
	s[offset] |= lval << size;
    }
    else {
	offset >>= 3;
	if (size == 8)
	    s[offset] = lval & 255;
	else if (size == 16) {
	    s[offset] = (lval >> 8) & 255;
	    s[offset+1] = lval & 255;
	}
	else if (size == 32) {
	    s[offset] = (lval >> 24) & 255;
	    s[offset+1] = (lval >> 16) & 255;
	    s[offset+2] = (lval >> 8) & 255;
	    s[offset+3] = lval & 255;
	}
    }
}

void
do_chop(astr,sv)
register SV *astr;
register SV *sv;
{
    STRLEN len;
    char *s;
    
    if (SvTYPE(sv) == SVt_PVAV) {
	register I32 i;
        I32 max;
	AV* av = (AV*)sv;
        max = AvFILL(av);
        for (i = 0; i <= max; i++) {
	    sv = (SV*)av_fetch(av, i, FALSE);
	    if (sv && ((sv = *(SV**)sv), sv != &sv_undef))
		do_chop(astr, sv);
	}
        return;
    }
    if (SvTYPE(sv) == SVt_PVHV) {
        HV* hv = (HV*)sv;
	HE* entry;
        (void)hv_iterinit(hv);
        /*SUPPRESS 560*/
        while (entry = hv_iternext(hv))
            do_chop(astr,hv_iterval(hv,entry));
        return;
    }
    s = SvPV(sv, len);
    if (len && !SvPOK(sv))
	s = SvPV_force(sv, len);
    if (s && len) {
	s += --len;
	sv_setpvn(astr, s, 1);
	*s = '\0';
	SvCUR_set(sv, len);
	SvNIOK_off(sv);
    }
    else
	sv_setpvn(astr, "", 0);
    SvSETMAGIC(sv);
} 

I32
do_chomp(sv)
register SV *sv;
{
    register I32 count;
    STRLEN len;
    char *s;

    if (RsSNARF(rs))
	return 0;
    count = 0;
    if (SvTYPE(sv) == SVt_PVAV) {
	register I32 i;
        I32 max;
	AV* av = (AV*)sv;
        max = AvFILL(av);
        for (i = 0; i <= max; i++) {
	    sv = (SV*)av_fetch(av, i, FALSE);
	    if (sv && ((sv = *(SV**)sv), sv != &sv_undef))
		count += do_chomp(sv);
	}
        return count;
    }
    if (SvTYPE(sv) == SVt_PVHV) {
        HV* hv = (HV*)sv;
	HE* entry;
        (void)hv_iterinit(hv);
        /*SUPPRESS 560*/
        while (entry = hv_iternext(hv))
            count += do_chomp(hv_iterval(hv,entry));
        return count;
    }
    s = SvPV(sv, len);
    if (len && !SvPOKp(sv))
	s = SvPV_force(sv, len);
    if (s && len) {
	s += --len;
	if (RsPARA(rs)) {
	    if (*s != '\n')
		goto nope;
	    ++count;
	    while (len && s[-1] == '\n') {
		--len;
		--s;
		++count;
	    }
	}
	else {
	    STRLEN rslen;
	    char *rsptr = SvPV(rs, rslen);
	    if (rslen == 1) {
		if (*s != *rsptr)
		    goto nope;
		++count;
	    }
	    else {
		if (len < rslen - 1)
		    goto nope;
		len -= rslen - 1;
		s -= rslen - 1;
		if (memNE(s, rsptr, rslen))
		    goto nope;
		count += rslen;
	    }
	}
	*s = '\0';
	SvCUR_set(sv, len);
	SvNIOK_off(sv);
    }
  nope:
    SvSETMAGIC(sv);
    return count;
} 

void
do_vop(optype,sv,left,right)
I32 optype;
SV *sv;
SV *left;
SV *right;
{
#ifdef LIBERAL
    register long *dl;
    register long *ll;
    register long *rl;
#endif
    register char *dc;
    STRLEN leftlen;
    STRLEN rightlen;
    register char *lc;
    register char *rc;
    register I32 len;
    I32 lensave;
    char *lsave;
    char *rsave;

    if (sv != left || (optype != OP_BIT_AND && !SvOK(sv) && !SvGMAGICAL(sv)))
	sv_setpvn(sv, "", 0);	/* avoid undef warning on |= and ^= */
    lsave = lc = SvPV(left, leftlen);
    rsave = rc = SvPV(right, rightlen);
    len = leftlen < rightlen ? leftlen : rightlen;
    lensave = len;
    if (SvOK(sv) || SvTYPE(sv) > SVt_PVMG) {
	dc = SvPV_force(sv, na);
	if (SvCUR(sv) < len) {
	    dc = SvGROW(sv, len + 1);
	    (void)memzero(dc + SvCUR(sv), len - SvCUR(sv) + 1);
	}
    }
    else {
	I32 needlen = ((optype == OP_BIT_AND)
			? len : (leftlen > rightlen ? leftlen : rightlen));
	Newz(801, dc, needlen + 1, char);
	(void)sv_usepvn(sv, dc, needlen);
	dc = SvPVX(sv);		/* sv_usepvn() calls Renew() */
    }
    SvCUR_set(sv, len);
    (void)SvPOK_only(sv);
#ifdef LIBERAL
    if (len >= sizeof(long)*4 &&
	!((long)dc % sizeof(long)) &&
	!((long)lc % sizeof(long)) &&
	!((long)rc % sizeof(long)))	/* It's almost always aligned... */
    {
	I32 remainder = len % (sizeof(long)*4);
	len /= (sizeof(long)*4);

	dl = (long*)dc;
	ll = (long*)lc;
	rl = (long*)rc;

	switch (optype) {
	case OP_BIT_AND:
	    while (len--) {
		*dl++ = *ll++ & *rl++;
		*dl++ = *ll++ & *rl++;
		*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(ARGS)
dARGS
{
    dSP;
    HV *hv = (HV*)POPs;
    register HE *entry;
    SV *tmpstr;
    I32 gimme = GIMME_V;
    I32 dokeys =   (op->op_type == OP_KEYS);
    I32 dovalues = (op->op_type == OP_VALUES);
    I32 realhv = (SvTYPE(hv) == SVt_PVHV);
    
    if (op->op_type == OP_RV2HV || op->op_type == OP_PADHV) 
	dokeys = dovalues = TRUE;

    if (!hv) {
	if (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;
    }

    if (realhv)
	(void)hv_iterinit(hv);	/* always reset iterator regardless */
    else
	(void)avhv_iterinit((AV*)hv);

    if (gimme == G_VOID)
	RETURN;

    if (gimme == G_SCALAR) {
	I32 i;
	dTARGET;

	if (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';
	    LvTARG(TARG) = (SV*)hv;
	    PUSHs(TARG);
	    RETURN;
	}

	if (!SvRMAGICAL(hv) || !mg_find((SV*)hv,'P'))
	    i = HvKEYS(hv);
	else {
	    i = 0;
	    /*SUPPRESS 560*/
	    while (entry = realhv ? hv_iternext(hv) : avhv_iternext((AV*)hv)) {
		i++;
	    }
	}
	PUSHi( i );
	RETURN;
    }

    /* Guess how much room we need.  hv_max may be a few too many.  Oh well. */
    EXTEND(sp, HvMAX(hv) * (dokeys + dovalues));

    PUTBACK;	/* hv_iternext and hv_iterval might clobber stack_sp */
    while (entry = realhv ? hv_iternext(hv) : avhv_iternext((AV*)hv)) {
	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(hv)+1,
			    (unsigned long)(HeHASH(entry) & HvMAX(hv))));
	    SPAGAIN;
	    XPUSHs(tmpstr);
	}
	PUTBACK;
    }
    return NORMAL;
}
Commit	Line	Data
a0d0e21e	1	/* doop.c
79072805	2	*
9607fc9c	3	* Copyright (c) 1991-1997, Larry Wall
79072805 LW	4	*
	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.
	7	*
a0d0e21e LW	8	*/
	9
	10	/*
	11	* "'So that was the job I felt I had to do when I started,' thought Sam."
79072805 LW	12	*/
	13
	14	#include "EXTERN.h"
	15	#include "perl.h"
	16
	17	#if !defined(NSIG) \|\| defined(M_UNIX) \|\| defined(M_XENIX)
	18	#include <signal.h>
	19	#endif
	20
79072805 LW	21	I32
	22	do_trans(sv,arg)
	23	SV *sv;
	24	OP *arg;
	25	{
11343788	26	dTHR;
79072805	27	register short *tbl;
1476d272	28	register U8 *s;
	29	register U8 *send;
	30	register U8 *d;
79072805	31	register I32 ch;
1476d272	32	register I32 matches = 0;
79072805	33	register I32 squash = op->op_private & OPpTRANS_SQUASH;
463ee0b2	34	STRLEN len;
79072805	35
a0d0e21e LW	36	if (SvREADONLY(sv))
a0d0e21e LW	37	croak(no_modify);
1476d272	38	tbl = (short*)cPVOP->op_pv;
1476d272	39	s = (U8*)SvPV(sv, len);
a0d0e21e LW	40	if (!len)
	41	return 0;
	42	if (!SvPOKp(sv))
1476d272	43	s = (U8*)SvPV_force(sv, len);
a0d0e21e	44	(void)SvPOK_only(sv);
463ee0b2	45	send = s + len;
79072805	46	if (!tbl \|\| !s)
463ee0b2	47	croak("panic: do_trans");
79072805 LW	48	DEBUG_t( deb("2.TBL\n"));
	49	if (!op->op_private) {
	50	while (s < send) {
1476d272	51	if ((ch = tbl[*s]) >= 0) {
79072805 LW	52	matches++;
	53	*s = ch;
	54	}
	55	s++;
	56	}
	57	}
	58	else {
	59	d = s;
	60	while (s < send) {
1476d272	61	if ((ch = tbl[*s]) >= 0) {
79072805 LW	62	*d = ch;
	63	if (matches++ && squash) {
	64	if (d[-1] == *d)
	65	matches--;
	66	else
	67	d++;
	68	}
	69	else
	70	d++;
	71	}
	72	else if (ch == -1) /* -1 is unmapped character */
	73	d++ = s; /* -2 is delete character */
	74	s++;
	75	}
	76	matches += send - d; /* account for disappeared chars */
	77	*d = '\0';
1476d272	78	SvCUR_set(sv, d - (U8*)SvPVX(sv));
79072805 LW	79	}
	80	SvSETMAGIC(sv);
	81	return matches;
	82	}
	83
	84	void
	85	do_join(sv,del,mark,sp)
	86	register SV *sv;
	87	SV *del;
	88	register SV **mark;
	89	register SV **sp;
	90	{
	91	SV **oldmark = mark;
	92	register I32 items = sp - mark;
79072805	93	register STRLEN len;
463ee0b2 LW	94	STRLEN delimlen;
	95	register char *delim = SvPV(del, delimlen);
	96	STRLEN tmplen;
79072805 LW	97
	98	mark++;
	99	len = (items > 0 ? (delimlen * (items - 1) ) : 0);
	100	if (SvTYPE(sv) < SVt_PV)
	101	sv_upgrade(sv, SVt_PV);
	102	if (SvLEN(sv) < len + items) { /* current length is way too short */
	103	while (items-- > 0) {
	104	if (*mark) {
463ee0b2 LW	105	SvPV(*mark, tmplen);
463ee0b2 LW	106	len += tmplen;
79072805 LW	107	}
	108	mark++;
	109	}
	110	SvGROW(sv, len + 1); /* so try to pre-extend */
	111
	112	mark = oldmark;
	113	items = sp - mark;;
	114	++mark;
	115	}
	116
463ee0b2	117	if (items-- > 0) {
8990e307 LW	118	char *s;
	119
	120	if (*mark) {
	121	s = SvPV(*mark, tmplen);
	122	sv_setpvn(sv, s, tmplen);
	123	}
	124	else
	125	sv_setpv(sv, "");
463ee0b2 LW	126	mark++;
463ee0b2 LW	127	}
79072805 LW	128	else
	129	sv_setpv(sv,"");
	130	len = delimlen;
	131	if (len) {
	132	for (; items > 0; items--,mark++) {
	133	sv_catpvn(sv,delim,len);
	134	sv_catsv(sv,*mark);
	135	}
	136	}
	137	else {
	138	for (; items > 0; items--,mark++)
	139	sv_catsv(sv,*mark);
	140	}
	141	SvSETMAGIC(sv);
	142	}
	143
	144	void
	145	do_sprintf(sv,len,sarg)
46fc3d4c	146	SV *sv;
	147	I32 len;
	148	SV **sarg;
79072805	149	{
46fc3d4c	150	STRLEN patlen;
	151	char pat = SvPV(sarg, patlen);
	152	bool do_taint = FALSE;
	153
	154	sv_vsetpvfn(sv, pat, patlen, Null(va_list*), sarg + 1, len - 1, &do_taint);
79072805	155	SvSETMAGIC(sv);
46fc3d4c	156	if (do_taint)
46fc3d4c	157	SvTAINTED_on(sv);
79072805 LW	158	}
	159
	160	void
	161	do_vecset(sv)
	162	SV *sv;
	163	{
	164	SV *targ = LvTARG(sv);
	165	register I32 offset;
	166	register I32 size;
8990e307 LW	167	register unsigned char *s;
8990e307 LW	168	register unsigned long lval;
79072805	169	I32 mask;
a0d0e21e LW	170	STRLEN targlen;
a0d0e21e LW	171	STRLEN len;
79072805	172
8990e307 LW	173	if (!targ)
8990e307 LW	174	return;
a0d0e21e	175	s = (unsigned char*)SvPV_force(targ, targlen);
8990e307	176	lval = U_L(SvNV(sv));
79072805 LW	177	offset = LvTARGOFF(sv);
79072805 LW	178	size = LvTARGLEN(sv);
a0d0e21e LW	179
	180	len = (offset + size + 7) / 8;
	181	if (len > targlen) {
	182	s = (unsigned char*)SvGROW(targ, len + 1);
	183	(void)memzero(s + targlen, len - targlen + 1);
	184	SvCUR_set(targ, len);
	185	}
	186
79072805 LW	187	if (size < 8) {
	188	mask = (1 << size) - 1;
	189	size = offset & 7;
	190	lval &= mask;
	191	offset >>= 3;
	192	s[offset] &= ~(mask << size);
	193	s[offset] \|= lval << size;
	194	}
	195	else {
a0d0e21e	196	offset >>= 3;
79072805 LW	197	if (size == 8)
	198	s[offset] = lval & 255;
	199	else if (size == 16) {
	200	s[offset] = (lval >> 8) & 255;
	201	s[offset+1] = lval & 255;
	202	}
	203	else if (size == 32) {
	204	s[offset] = (lval >> 24) & 255;
	205	s[offset+1] = (lval >> 16) & 255;
	206	s[offset+2] = (lval >> 8) & 255;
	207	s[offset+3] = lval & 255;
	208	}
	209	}
	210	}
	211
	212	void
	213	do_chop(astr,sv)
	214	register SV *astr;
	215	register SV *sv;
	216	{
463ee0b2	217	STRLEN len;
a0d0e21e LW	218	char *s;
a0d0e21e LW	219
79072805	220	if (SvTYPE(sv) == SVt_PVAV) {
a0d0e21e LW	221	register I32 i;
	222	I32 max;
	223	AV* av = (AV*)sv;
	224	max = AvFILL(av);
	225	for (i = 0; i <= max; i++) {
	226	sv = (SV*)av_fetch(av, i, FALSE);
	227	if (sv && ((sv = (SV*)sv), sv != &sv_undef))
	228	do_chop(astr, sv);
	229	}
	230	return;
79072805 LW	231	}
79072805 LW	232	if (SvTYPE(sv) == SVt_PVHV) {
a0d0e21e LW	233	HV* hv = (HV*)sv;
	234	HE* entry;
	235	(void)hv_iterinit(hv);
	236	/SUPPRESS 560/
	237	while (entry = hv_iternext(hv))
	238	do_chop(astr,hv_iterval(hv,entry));
	239	return;
79072805	240	}
a0d0e21e	241	s = SvPV(sv, len);
748a9306	242	if (len && !SvPOK(sv))
a0d0e21e LW	243	s = SvPV_force(sv, len);
	244	if (s && len) {
	245	s += --len;
	246	sv_setpvn(astr, s, 1);
	247	*s = '\0';
	248	SvCUR_set(sv, len);
	249	SvNIOK_off(sv);
79072805 LW	250	}
79072805 LW	251	else
a0d0e21e LW	252	sv_setpvn(astr, "", 0);
	253	SvSETMAGIC(sv);
	254	}
	255
	256	I32
	257	do_chomp(sv)
	258	register SV *sv;
	259	{
c07a80fd	260	register I32 count;
a0d0e21e LW	261	STRLEN len;
a0d0e21e LW	262	char *s;
c07a80fd	263
	264	if (RsSNARF(rs))
	265	return 0;
	266	count = 0;
a0d0e21e LW	267	if (SvTYPE(sv) == SVt_PVAV) {
	268	register I32 i;
	269	I32 max;
	270	AV* av = (AV*)sv;
	271	max = AvFILL(av);
	272	for (i = 0; i <= max; i++) {
	273	sv = (SV*)av_fetch(av, i, FALSE);
	274	if (sv && ((sv = (SV*)sv), sv != &sv_undef))
	275	count += do_chomp(sv);
	276	}
	277	return count;
	278	}
	279	if (SvTYPE(sv) == SVt_PVHV) {
	280	HV* hv = (HV*)sv;
	281	HE* entry;
	282	(void)hv_iterinit(hv);
	283	/SUPPRESS 560/
	284	while (entry = hv_iternext(hv))
	285	count += do_chomp(hv_iterval(hv,entry));
	286	return count;
	287	}
	288	s = SvPV(sv, len);
	289	if (len && !SvPOKp(sv))
	290	s = SvPV_force(sv, len);
	291	if (s && len) {
	292	s += --len;
c07a80fd	293	if (RsPARA(rs)) {
a0d0e21e LW	294	if (*s != '\n')
	295	goto nope;
	296	++count;
	297	while (len && s[-1] == '\n') {
	298	--len;
	299	--s;
	300	++count;
	301	}
	302	}
a0d0e21e	303	else {
c07a80fd	304	STRLEN rslen;
	305	char *rsptr = SvPV(rs, rslen);
	306	if (rslen == 1) {
	307	if (s != rsptr)
	308	goto nope;
	309	++count;
	310	}
	311	else {
8c2cee6f	312	if (len < rslen - 1)
c07a80fd	313	goto nope;
	314	len -= rslen - 1;
	315	s -= rslen - 1;
36477c24	316	if (memNE(s, rsptr, rslen))
c07a80fd	317	goto nope;
	318	count += rslen;
	319	}
a0d0e21e	320	}
a0d0e21e LW	321	*s = '\0';
	322	SvCUR_set(sv, len);
	323	SvNIOK_off(sv);
	324	}
	325	nope:
	326	SvSETMAGIC(sv);
	327	return count;
	328	}
79072805 LW	329
	330	void
	331	do_vop(optype,sv,left,right)
	332	I32 optype;
	333	SV *sv;
	334	SV *left;
	335	SV *right;
	336	{
	337	#ifdef LIBERAL
	338	register long *dl;
	339	register long *ll;
	340	register long *rl;
	341	#endif
	342	register char *dc;
463ee0b2 LW	343	STRLEN leftlen;
463ee0b2 LW	344	STRLEN rightlen;
7a4c00b4	345	register char *lc;
7a4c00b4	346	register char *rc;
79072805	347	register I32 len;
a0d0e21e	348	I32 lensave;
7a4c00b4	349	char *lsave;
7a4c00b4	350	char *rsave;
79072805	351
1fbd88dc CS	352	if (sv != left \|\| (optype != OP_BIT_AND && !SvOK(sv) && !SvGMAGICAL(sv)))
1fbd88dc CS	353	sv_setpvn(sv, "", 0); /* avoid undef warning on \|= and ^= */
7a4c00b4	354	lsave = lc = SvPV(left, leftlen);
7a4c00b4	355	rsave = rc = SvPV(right, rightlen);
93a17b20	356	len = leftlen < rightlen ? leftlen : rightlen;
a0d0e21e	357	lensave = len;
7a4c00b4	358	if (SvOK(sv) \|\| SvTYPE(sv) > SVt_PVMG) {
ff68c719	359	dc = SvPV_force(sv, na);
	360	if (SvCUR(sv) < len) {
	361	dc = SvGROW(sv, len + 1);
	362	(void)memzero(dc + SvCUR(sv), len - SvCUR(sv) + 1);
	363	}
	364	}
	365	else {
	366	I32 needlen = ((optype == OP_BIT_AND)
	367	? len : (leftlen > rightlen ? leftlen : rightlen));
	368	Newz(801, dc, needlen + 1, char);
	369	(void)sv_usepvn(sv, dc, needlen);
	370	dc = SvPVX(sv); /* sv_usepvn() calls Renew() */
79072805	371	}
a0d0e21e LW	372	SvCUR_set(sv, len);
a0d0e21e LW	373	(void)SvPOK_only(sv);
79072805 LW	374	#ifdef LIBERAL
	375	if (len >= sizeof(long)*4 &&
	376	!((long)dc % sizeof(long)) &&
	377	!((long)lc % sizeof(long)) &&
	378	!((long)rc % sizeof(long))) /* It's almost always aligned... */
	379	{
	380	I32 remainder = len % (sizeof(long)*4);
	381	len /= (sizeof(long)*4);
	382
	383	dl = (long*)dc;
	384	ll = (long*)lc;
	385	rl = (long*)rc;
	386
	387	switch (optype) {
	388	case OP_BIT_AND:
	389	while (len--) {
	390	dl++ = ll++ & *rl++;
	391	dl++ = ll++ & *rl++;
	392	dl++ = ll++ & *rl++;
	393	dl++ = ll++ & *rl++;
	394	}
	395	break;
a0d0e21e	396	case OP_BIT_XOR:
79072805 LW	397	while (len--) {
	398	dl++ = ll++ ^ *rl++;
	399	dl++ = ll++ ^ *rl++;
	400	dl++ = ll++ ^ *rl++;
	401	dl++ = ll++ ^ *rl++;
	402	}
	403	break;
	404	case OP_BIT_OR:
	405	while (len--) {
	406	dl++ = ll++ \| *rl++;
	407	dl++ = ll++ \| *rl++;
	408	dl++ = ll++ \| *rl++;
	409	dl++ = ll++ \| *rl++;
	410	}
	411	}
	412
	413	dc = (char*)dl;
	414	lc = (char*)ll;
	415	rc = (char*)rl;
	416
	417	len = remainder;
	418	}
	419	#endif
a0d0e21e	420	{
a0d0e21e LW	421	switch (optype) {
	422	case OP_BIT_AND:
	423	while (len--)
	424	dc++ = lc++ & *rc++;
	425	break;
	426	case OP_BIT_XOR:
	427	while (len--)
	428	dc++ = lc++ ^ *rc++;
	429	goto mop_up;
	430	case OP_BIT_OR:
	431	while (len--)
	432	dc++ = lc++ \| *rc++;
	433	mop_up:
	434	len = lensave;
	435	if (rightlen > len)
	436	sv_catpvn(sv, rsave + len, rightlen - len);
	437	else if (leftlen > len)
	438	sv_catpvn(sv, lsave + len, leftlen - len);
4633a7c4 LW	439	else
4633a7c4 LW	440	*SvEND(sv) = '\0';
a0d0e21e LW	441	break;
a0d0e21e LW	442	}
79072805	443	}
fb73857a	444	SvTAINT(sv);
79072805	445	}
463ee0b2 LW	446
	447	OP *
	448	do_kv(ARGS)
	449	dARGS
	450	{
	451	dSP;
	452	HV hv = (HV)POPs;
463ee0b2	453	register HE *entry;
463ee0b2	454	SV *tmpstr;
54310121	455	I32 gimme = GIMME_V;
a0d0e21e LW	456	I32 dokeys = (op->op_type == OP_KEYS);
a0d0e21e LW	457	I32 dovalues = (op->op_type == OP_VALUES);
c750a3ec MB	458	I32 realhv = (SvTYPE(hv) == SVt_PVHV);
c750a3ec MB	459
a0d0e21e LW	460	if (op->op_type == OP_RV2HV \|\| op->op_type == OP_PADHV)
a0d0e21e LW	461	dokeys = dovalues = TRUE;
463ee0b2	462
85581909 SB	463	if (!hv) {
	464	if (op->op_flags & OPf_MOD) { /* lvalue */
	465	dTARGET; /* make sure to clear its target here */
	466	if (SvTYPE(TARG) == SVt_PVLV)
	467	LvTARG(TARG) = Nullsv;
	468	PUSHs(TARG);
	469	}
463ee0b2	470	RETURN;
85581909	471	}
748a9306	472
c750a3ec MB	473	if (realhv)
	474	(void)hv_iterinit(hv); /* always reset iterator regardless */
	475	else
	476	(void)avhv_iterinit((AV*)hv);
748a9306	477
54310121	478	if (gimme == G_VOID)
aa689395	479	RETURN;
aa689395	480
54310121	481	if (gimme == G_SCALAR) {
8c2cee6f	482	I32 i;
463ee0b2 LW	483	dTARGET;
463ee0b2 LW	484
85581909 SB	485	if (op->op_flags & OPf_MOD) { /* lvalue */
	486	if (SvTYPE(TARG) < SVt_PVLV) {
	487	sv_upgrade(TARG, SVt_PVLV);
	488	sv_magic(TARG, Nullsv, 'k', Nullch, 0);
	489	}
	490	LvTYPE(TARG) = 'k';
	491	LvTARG(TARG) = (SV*)hv;
	492	PUSHs(TARG);
	493	RETURN;
	494	}
	495
8990e307	496	if (!SvRMAGICAL(hv) \|\| !mg_find((SV*)hv,'P'))
463ee0b2 LW	497	i = HvKEYS(hv);
	498	else {
	499	i = 0;
463ee0b2	500	/SUPPRESS 560/
c750a3ec	501	while (entry = realhv ? hv_iternext(hv) : avhv_iternext((AV*)hv)) {
463ee0b2 LW	502	i++;
	503	}
	504	}
	505	PUSHi( i );
	506	RETURN;
	507	}
	508
	509	/* Guess how much room we need. hv_max may be a few too many. Oh well. */
	510	EXTEND(sp, HvMAX(hv) * (dokeys + dovalues));
	511
463ee0b2	512	PUTBACK; /* hv_iternext and hv_iterval might clobber stack_sp */
c750a3ec	513	while (entry = realhv ? hv_iternext(hv) : avhv_iternext((AV*)hv)) {
463ee0b2	514	SPAGAIN;
8c2cee6f	515	if (dokeys)
8c2cee6f	516	XPUSHs(hv_iterkeysv(entry)); /* won't clobber stack_sp */
463ee0b2	517	if (dovalues) {
46fc3d4c	518	tmpstr = sv_newmortal();
463ee0b2	519	PUTBACK;
c750a3ec MB	520	sv_setsv(tmpstr,realhv ?
c750a3ec MB	521	hv_iterval(hv,entry) : avhv_iterval((AV*)hv,entry));
46fc3d4c	522	DEBUG_H(sv_setpvf(tmpstr, "%lu%%%d=%lu",
	523	(unsigned long)HeHASH(entry),
	524	HvMAX(hv)+1,
	525	(unsigned long)(HeHASH(entry) & HvMAX(hv))));
463ee0b2	526	SPAGAIN;
46fc3d4c	527	XPUSHs(tmpstr);
463ee0b2 LW	528	}
	529	PUTBACK;
	530	}
	531	return NORMAL;
	532	}