[p5sagit/p5-mst-13.2.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 *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) && !(op->op_private & OPpTRANS_COUNTONLY))
	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++;
	}
	SvSETMAGIC(sv);
    }
    else if (op->op_private & OPpTRANS_COUNTONLY) {
	while (s < send) {
	    if (tbl[*s] >= 0)
		matches++;
	    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(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 *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 *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(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(register SV *sv)
{
    dTHR;
    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(I32 optype, SV *sv, SV *left, SV *right)
{
    dTHR;	/* just for taint */
#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(ARGSproto)
{
    djSP;
    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	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	8	*/
	9
	10	/*
	11	* "'So that was the job I felt I had to do when I started,' thought Sam."
79072805	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	21	I32
8ac85365	22	do_trans(SV sv, OP arg)
79072805	23	{
11343788	24	dTHR;
79072805	25	register short *tbl;
1476d272	26	register U8 *s;
	27	register U8 *send;
	28	register U8 *d;
79072805	29	register I32 ch;
1476d272	30	register I32 matches = 0;
79072805	31	register I32 squash = op->op_private & OPpTRANS_SQUASH;
463ee0b2	32	STRLEN len;
79072805	33
5d06d08e	34	if (SvREADONLY(sv) && !(op->op_private & OPpTRANS_COUNTONLY))
a0d0e21e	35	croak(no_modify);
1476d272	36	tbl = (short*)cPVOP->op_pv;
1476d272	37	s = (U8*)SvPV(sv, len);
a0d0e21e	38	if (!len)
	39	return 0;
	40	if (!SvPOKp(sv))
1476d272	41	s = (U8*)SvPV_force(sv, len);
a0d0e21e	42	(void)SvPOK_only(sv);
463ee0b2	43	send = s + len;
79072805	44	if (!tbl \|\| !s)
463ee0b2	45	croak("panic: do_trans");
79072805	46	DEBUG_t( deb("2.TBL\n"));
	47	if (!op->op_private) {
	48	while (s < send) {
1476d272	49	if ((ch = tbl[*s]) >= 0) {
79072805	50	matches++;
	51	*s = ch;
	52	}
	53	s++;
	54	}
5d06d08e	55	SvSETMAGIC(sv);
	56	}
	57	else if (op->op_private & OPpTRANS_COUNTONLY) {
	58	while (s < send) {
	59	if (tbl[*s] >= 0)
	60	matches++;
	61	s++;
	62	}
79072805	63	}
	64	else {
	65	d = s;
	66	while (s < send) {
1476d272	67	if ((ch = tbl[*s]) >= 0) {
79072805	68	*d = ch;
	69	if (matches++ && squash) {
	70	if (d[-1] == *d)
	71	matches--;
	72	else
	73	d++;
	74	}
	75	else
	76	d++;
	77	}
	78	else if (ch == -1) /* -1 is unmapped character */
	79	d++ = s; /* -2 is delete character */
	80	s++;
	81	}
	82	matches += send - d; /* account for disappeared chars */
	83	*d = '\0';
1476d272	84	SvCUR_set(sv, d - (U8*)SvPVX(sv));
5d06d08e	85	SvSETMAGIC(sv);
79072805	86	}
79072805	87	return matches;
	88	}
	89
	90	void
8ac85365	91	do_join(register SV sv, SV del, register SV mark, register SV sp)
79072805	92	{
	93	SV **oldmark = mark;
	94	register I32 items = sp - mark;
79072805	95	register STRLEN len;
463ee0b2	96	STRLEN delimlen;
	97	register char *delim = SvPV(del, delimlen);
	98	STRLEN tmplen;
79072805	99
	100	mark++;
	101	len = (items > 0 ? (delimlen * (items - 1) ) : 0);
	102	if (SvTYPE(sv) < SVt_PV)
	103	sv_upgrade(sv, SVt_PV);
	104	if (SvLEN(sv) < len + items) { /* current length is way too short */
	105	while (items-- > 0) {
	106	if (*mark) {
463ee0b2	107	SvPV(*mark, tmplen);
463ee0b2	108	len += tmplen;
79072805	109	}
	110	mark++;
	111	}
	112	SvGROW(sv, len + 1); /* so try to pre-extend */
	113
	114	mark = oldmark;
	115	items = sp - mark;;
	116	++mark;
	117	}
	118
463ee0b2	119	if (items-- > 0) {
8990e307	120	char *s;
	121
	122	if (*mark) {
	123	s = SvPV(*mark, tmplen);
	124	sv_setpvn(sv, s, tmplen);
	125	}
	126	else
	127	sv_setpv(sv, "");
463ee0b2	128	mark++;
463ee0b2	129	}
79072805	130	else
	131	sv_setpv(sv,"");
	132	len = delimlen;
	133	if (len) {
	134	for (; items > 0; items--,mark++) {
	135	sv_catpvn(sv,delim,len);
	136	sv_catsv(sv,*mark);
	137	}
	138	}
	139	else {
	140	for (; items > 0; items--,mark++)
	141	sv_catsv(sv,*mark);
	142	}
	143	SvSETMAGIC(sv);
	144	}
	145
	146	void
8ac85365	147	do_sprintf(SV sv, I32 len, SV *sarg)
79072805	148	{
46fc3d4c	149	STRLEN patlen;
	150	char pat = SvPV(sarg, patlen);
	151	bool do_taint = FALSE;
	152
	153	sv_vsetpvfn(sv, pat, patlen, Null(va_list*), sarg + 1, len - 1, &do_taint);
79072805	154	SvSETMAGIC(sv);
46fc3d4c	155	if (do_taint)
46fc3d4c	156	SvTAINTED_on(sv);
79072805	157	}
	158
	159	void
8ac85365	160	do_vecset(SV *sv)
79072805	161	{
	162	SV *targ = LvTARG(sv);
	163	register I32 offset;
	164	register I32 size;
8990e307	165	register unsigned char *s;
8990e307	166	register unsigned long lval;
79072805	167	I32 mask;
a0d0e21e	168	STRLEN targlen;
a0d0e21e	169	STRLEN len;
79072805	170
8990e307	171	if (!targ)
8990e307	172	return;
a0d0e21e	173	s = (unsigned char*)SvPV_force(targ, targlen);
8990e307	174	lval = U_L(SvNV(sv));
79072805	175	offset = LvTARGOFF(sv);
79072805	176	size = LvTARGLEN(sv);
a0d0e21e	177
	178	len = (offset + size + 7) / 8;
	179	if (len > targlen) {
	180	s = (unsigned char*)SvGROW(targ, len + 1);
	181	(void)memzero(s + targlen, len - targlen + 1);
	182	SvCUR_set(targ, len);
	183	}
	184
79072805	185	if (size < 8) {
	186	mask = (1 << size) - 1;
	187	size = offset & 7;
	188	lval &= mask;
	189	offset >>= 3;
	190	s[offset] &= ~(mask << size);
	191	s[offset] \|= lval << size;
	192	}
	193	else {
a0d0e21e	194	offset >>= 3;
79072805	195	if (size == 8)
	196	s[offset] = lval & 255;
	197	else if (size == 16) {
	198	s[offset] = (lval >> 8) & 255;
	199	s[offset+1] = lval & 255;
	200	}
	201	else if (size == 32) {
	202	s[offset] = (lval >> 24) & 255;
	203	s[offset+1] = (lval >> 16) & 255;
	204	s[offset+2] = (lval >> 8) & 255;
	205	s[offset+3] = lval & 255;
	206	}
	207	}
	208	}
	209
	210	void
8ac85365	211	do_chop(register SV astr, register SV sv)
79072805	212	{
463ee0b2	213	STRLEN len;
a0d0e21e	214	char *s;
a0d0e21e	215
79072805	216	if (SvTYPE(sv) == SVt_PVAV) {
a0d0e21e	217	register I32 i;
	218	I32 max;
	219	AV* av = (AV*)sv;
	220	max = AvFILL(av);
	221	for (i = 0; i <= max; i++) {
	222	sv = (SV*)av_fetch(av, i, FALSE);
	223	if (sv && ((sv = (SV*)sv), sv != &sv_undef))
	224	do_chop(astr, sv);
	225	}
	226	return;
79072805	227	}
79072805	228	if (SvTYPE(sv) == SVt_PVHV) {
a0d0e21e	229	HV* hv = (HV*)sv;
	230	HE* entry;
	231	(void)hv_iterinit(hv);
	232	/SUPPRESS 560/
	233	while (entry = hv_iternext(hv))
	234	do_chop(astr,hv_iterval(hv,entry));
	235	return;
79072805	236	}
a0d0e21e	237	s = SvPV(sv, len);
748a9306	238	if (len && !SvPOK(sv))
a0d0e21e	239	s = SvPV_force(sv, len);
	240	if (s && len) {
	241	s += --len;
	242	sv_setpvn(astr, s, 1);
	243	*s = '\0';
	244	SvCUR_set(sv, len);
	245	SvNIOK_off(sv);
79072805	246	}
79072805	247	else
a0d0e21e	248	sv_setpvn(astr, "", 0);
	249	SvSETMAGIC(sv);
	250	}
	251
	252	I32
8ac85365	253	do_chomp(register SV *sv)
a0d0e21e	254	{
aeea060c	255	dTHR;
c07a80fd	256	register I32 count;
a0d0e21e	257	STRLEN len;
a0d0e21e	258	char *s;
c07a80fd	259
	260	if (RsSNARF(rs))
	261	return 0;
	262	count = 0;
a0d0e21e	263	if (SvTYPE(sv) == SVt_PVAV) {
	264	register I32 i;
	265	I32 max;
	266	AV* av = (AV*)sv;
	267	max = AvFILL(av);
	268	for (i = 0; i <= max; i++) {
	269	sv = (SV*)av_fetch(av, i, FALSE);
	270	if (sv && ((sv = (SV*)sv), sv != &sv_undef))
	271	count += do_chomp(sv);
	272	}
	273	return count;
	274	}
	275	if (SvTYPE(sv) == SVt_PVHV) {
	276	HV* hv = (HV*)sv;
	277	HE* entry;
	278	(void)hv_iterinit(hv);
	279	/SUPPRESS 560/
	280	while (entry = hv_iternext(hv))
	281	count += do_chomp(hv_iterval(hv,entry));
	282	return count;
	283	}
	284	s = SvPV(sv, len);
	285	if (len && !SvPOKp(sv))
	286	s = SvPV_force(sv, len);
	287	if (s && len) {
	288	s += --len;
c07a80fd	289	if (RsPARA(rs)) {
a0d0e21e	290	if (*s != '\n')
	291	goto nope;
	292	++count;
	293	while (len && s[-1] == '\n') {
	294	--len;
	295	--s;
	296	++count;
	297	}
	298	}
a0d0e21e	299	else {
c07a80fd	300	STRLEN rslen;
	301	char *rsptr = SvPV(rs, rslen);
	302	if (rslen == 1) {
	303	if (s != rsptr)
	304	goto nope;
	305	++count;
	306	}
	307	else {
8c2cee6f	308	if (len < rslen - 1)
c07a80fd	309	goto nope;
	310	len -= rslen - 1;
	311	s -= rslen - 1;
36477c24	312	if (memNE(s, rsptr, rslen))
c07a80fd	313	goto nope;
	314	count += rslen;
	315	}
a0d0e21e	316	}
a0d0e21e	317	*s = '\0';
	318	SvCUR_set(sv, len);
	319	SvNIOK_off(sv);
	320	}
	321	nope:
	322	SvSETMAGIC(sv);
	323	return count;
	324	}
79072805	325
79072805	326	void
8ac85365	327	do_vop(I32 optype, SV sv, SV left, SV *right)
79072805	328	{
aeea060c	329	dTHR; /* just for taint */
79072805	330	#ifdef LIBERAL
	331	register long *dl;
	332	register long *ll;
	333	register long *rl;
	334	#endif
	335	register char *dc;
463ee0b2	336	STRLEN leftlen;
463ee0b2	337	STRLEN rightlen;
7a4c00b4	338	register char *lc;
7a4c00b4	339	register char *rc;
79072805	340	register I32 len;
a0d0e21e	341	I32 lensave;
7a4c00b4	342	char *lsave;
7a4c00b4	343	char *rsave;
79072805	344
1fbd88dc	345	if (sv != left \|\| (optype != OP_BIT_AND && !SvOK(sv) && !SvGMAGICAL(sv)))
1fbd88dc	346	sv_setpvn(sv, "", 0); /* avoid undef warning on \|= and ^= */
7a4c00b4	347	lsave = lc = SvPV(left, leftlen);
7a4c00b4	348	rsave = rc = SvPV(right, rightlen);
93a17b20	349	len = leftlen < rightlen ? leftlen : rightlen;
a0d0e21e	350	lensave = len;
7a4c00b4	351	if (SvOK(sv) \|\| SvTYPE(sv) > SVt_PVMG) {
ff68c719	352	dc = SvPV_force(sv, na);
	353	if (SvCUR(sv) < len) {
	354	dc = SvGROW(sv, len + 1);
	355	(void)memzero(dc + SvCUR(sv), len - SvCUR(sv) + 1);
	356	}
	357	}
	358	else {
	359	I32 needlen = ((optype == OP_BIT_AND)
	360	? len : (leftlen > rightlen ? leftlen : rightlen));
	361	Newz(801, dc, needlen + 1, char);
	362	(void)sv_usepvn(sv, dc, needlen);
	363	dc = SvPVX(sv); /* sv_usepvn() calls Renew() */
79072805	364	}
a0d0e21e	365	SvCUR_set(sv, len);
a0d0e21e	366	(void)SvPOK_only(sv);
79072805	367	#ifdef LIBERAL
	368	if (len >= sizeof(long)*4 &&
	369	!((long)dc % sizeof(long)) &&
	370	!((long)lc % sizeof(long)) &&
	371	!((long)rc % sizeof(long))) /* It's almost always aligned... */
	372	{
	373	I32 remainder = len % (sizeof(long)*4);
	374	len /= (sizeof(long)*4);
	375
	376	dl = (long*)dc;
	377	ll = (long*)lc;
	378	rl = (long*)rc;
	379
	380	switch (optype) {
	381	case OP_BIT_AND:
	382	while (len--) {
	383	dl++ = ll++ & *rl++;
	384	dl++ = ll++ & *rl++;
	385	dl++ = ll++ & *rl++;
	386	dl++ = ll++ & *rl++;
	387	}
	388	break;
a0d0e21e	389	case OP_BIT_XOR:
79072805	390	while (len--) {
	391	dl++ = ll++ ^ *rl++;
	392	dl++ = ll++ ^ *rl++;
	393	dl++ = ll++ ^ *rl++;
	394	dl++ = ll++ ^ *rl++;
	395	}
	396	break;
	397	case OP_BIT_OR:
	398	while (len--) {
	399	dl++ = ll++ \| *rl++;
	400	dl++ = ll++ \| *rl++;
	401	dl++ = ll++ \| *rl++;
	402	dl++ = ll++ \| *rl++;
	403	}
	404	}
	405
	406	dc = (char*)dl;
	407	lc = (char*)ll;
	408	rc = (char*)rl;
	409
	410	len = remainder;
	411	}
	412	#endif
a0d0e21e	413	{
a0d0e21e	414	switch (optype) {
	415	case OP_BIT_AND:
	416	while (len--)
	417	dc++ = lc++ & *rc++;
	418	break;
	419	case OP_BIT_XOR:
	420	while (len--)
	421	dc++ = lc++ ^ *rc++;
	422	goto mop_up;
	423	case OP_BIT_OR:
	424	while (len--)
	425	dc++ = lc++ \| *rc++;
	426	mop_up:
	427	len = lensave;
	428	if (rightlen > len)
	429	sv_catpvn(sv, rsave + len, rightlen - len);
	430	else if (leftlen > len)
	431	sv_catpvn(sv, lsave + len, leftlen - len);
4633a7c4	432	else
4633a7c4	433	*SvEND(sv) = '\0';
a0d0e21e	434	break;
a0d0e21e	435	}
79072805	436	}
fb73857a	437	SvTAINT(sv);
79072805	438	}
463ee0b2	439
463ee0b2	440	OP *
8ac85365	441	do_kv(ARGSproto)
463ee0b2	442	{
4e35701f	443	djSP;
463ee0b2	444	HV hv = (HV)POPs;
463ee0b2	445	register HE *entry;
463ee0b2	446	SV *tmpstr;
54310121	447	I32 gimme = GIMME_V;
a0d0e21e	448	I32 dokeys = (op->op_type == OP_KEYS);
a0d0e21e	449	I32 dovalues = (op->op_type == OP_VALUES);
c750a3ec	450	I32 realhv = (SvTYPE(hv) == SVt_PVHV);
c750a3ec	451
a0d0e21e	452	if (op->op_type == OP_RV2HV \|\| op->op_type == OP_PADHV)
a0d0e21e	453	dokeys = dovalues = TRUE;
463ee0b2	454
85581909	455	if (!hv) {
	456	if (op->op_flags & OPf_MOD) { /* lvalue */
	457	dTARGET; /* make sure to clear its target here */
	458	if (SvTYPE(TARG) == SVt_PVLV)
	459	LvTARG(TARG) = Nullsv;
	460	PUSHs(TARG);
	461	}
463ee0b2	462	RETURN;
85581909	463	}
748a9306	464
c750a3ec	465	if (realhv)
	466	(void)hv_iterinit(hv); /* always reset iterator regardless */
	467	else
	468	(void)avhv_iterinit((AV*)hv);
748a9306	469
54310121	470	if (gimme == G_VOID)
aa689395	471	RETURN;
aa689395	472
54310121	473	if (gimme == G_SCALAR) {
8c2cee6f	474	I32 i;
463ee0b2	475	dTARGET;
463ee0b2	476
85581909	477	if (op->op_flags & OPf_MOD) { /* lvalue */
	478	if (SvTYPE(TARG) < SVt_PVLV) {
	479	sv_upgrade(TARG, SVt_PVLV);
	480	sv_magic(TARG, Nullsv, 'k', Nullch, 0);
	481	}
	482	LvTYPE(TARG) = 'k';
	483	LvTARG(TARG) = (SV*)hv;
	484	PUSHs(TARG);
	485	RETURN;
	486	}
	487
8990e307	488	if (!SvRMAGICAL(hv) \|\| !mg_find((SV*)hv,'P'))
463ee0b2	489	i = HvKEYS(hv);
	490	else {
	491	i = 0;
463ee0b2	492	/SUPPRESS 560/
c750a3ec	493	while (entry = realhv ? hv_iternext(hv) : avhv_iternext((AV*)hv)) {
463ee0b2	494	i++;
	495	}
	496	}
	497	PUSHi( i );
	498	RETURN;
	499	}
	500
	501	/* Guess how much room we need. hv_max may be a few too many. Oh well. */
	502	EXTEND(sp, HvMAX(hv) * (dokeys + dovalues));
	503
463ee0b2	504	PUTBACK; /* hv_iternext and hv_iterval might clobber stack_sp */
c750a3ec	505	while (entry = realhv ? hv_iternext(hv) : avhv_iternext((AV*)hv)) {
463ee0b2	506	SPAGAIN;
8c2cee6f	507	if (dokeys)
8c2cee6f	508	XPUSHs(hv_iterkeysv(entry)); /* won't clobber stack_sp */
463ee0b2	509	if (dovalues) {
46fc3d4c	510	tmpstr = sv_newmortal();
463ee0b2	511	PUTBACK;
c750a3ec	512	sv_setsv(tmpstr,realhv ?
c750a3ec	513	hv_iterval(hv,entry) : avhv_iterval((AV*)hv,entry));
46fc3d4c	514	DEBUG_H(sv_setpvf(tmpstr, "%lu%%%d=%lu",
	515	(unsigned long)HeHASH(entry),
	516	HvMAX(hv)+1,
	517	(unsigned long)(HeHASH(entry) & HvMAX(hv))));
463ee0b2	518	SPAGAIN;
46fc3d4c	519	XPUSHs(tmpstr);
463ee0b2	520	}
	521	PUTBACK;
	522	}
	523	return NORMAL;
	524	}
4e35701f	525