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