[p5sagit/p5-mst-13.2.git] / ext / PerlIO / scalar / scalar.xs

#define PERL_NO_GET_CONTEXT
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#ifdef PERLIO_LAYERS

#include "perliol.h"

typedef struct {
    struct _PerlIO base;	/* Base "class" info */
    SV *var;
    Off_t posn;
} PerlIOScalar;

IV
PerlIOScalar_pushed(pTHX_ PerlIO * f, const char *mode, SV * arg,
		    PerlIO_funcs * tab)
{
    IV code;
    PerlIOScalar *s = PerlIOSelf(f, PerlIOScalar);
    /* If called (normally) via open() then arg is ref to scalar we are
     * using, otherwise arg (from binmode presumably) is either NULL
     * or the _name_ of the scalar
     */
    if (arg) {
	if (SvROK(arg)) {
	    if (SvREADONLY(SvRV(arg)) && mode && *mode != 'r') {
		if (ckWARN(WARN_LAYER))
		    Perl_warner(aTHX_ packWARN(WARN_LAYER), PL_no_modify);
		SETERRNO(EINVAL, SS_IVCHAN);
		return -1;
	    }
	    s->var = SvREFCNT_inc(SvRV(arg));
	    SvGETMAGIC(s->var);
	    if (!SvPOK(s->var) && SvOK(s->var))
		(void)SvPV_nomg_const_nolen(s->var);
	}
	else {
	    s->var =
		SvREFCNT_inc(perl_get_sv
			     (SvPV_nolen(arg), GV_ADD | GV_ADDMULTI));
	}
    }
    else {
	s->var = newSVpvn("", 0);
    }
    SvUPGRADE(s->var, SVt_PV);
    code = PerlIOBase_pushed(aTHX_ f, mode, Nullsv, tab);
    if (!SvOK(s->var) || (PerlIOBase(f)->flags) & PERLIO_F_TRUNCATE)
	SvCUR_set(s->var, 0);
    if ((PerlIOBase(f)->flags) & PERLIO_F_APPEND)
	s->posn = SvCUR(s->var);
    else
	s->posn = 0;
    return code;
}

IV
PerlIOScalar_popped(pTHX_ PerlIO * f)
{
    PerlIOScalar *s = PerlIOSelf(f, PerlIOScalar);
    if (s->var) {
	SvREFCNT_dec(s->var);
	s->var = Nullsv;
    }
    return 0;
}

IV
PerlIOScalar_close(pTHX_ PerlIO * f)
{
    IV code = PerlIOBase_close(aTHX_ f);
    PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF);
    return code;
}

IV
PerlIOScalar_fileno(pTHX_ PerlIO * f)
{
    return -1;
}

IV
PerlIOScalar_seek(pTHX_ PerlIO * f, Off_t offset, int whence)
{
    PerlIOScalar *s = PerlIOSelf(f, PerlIOScalar);
    STRLEN oldcur = SvCUR(s->var);
    STRLEN newlen;
    switch (whence) {
    case SEEK_SET:
	s->posn = offset;
	break;
    case SEEK_CUR:
	s->posn = offset + s->posn;
	break;
    case SEEK_END:
	s->posn = offset + SvCUR(s->var);
	break;
    }
    if (s->posn < 0) {
        if (ckWARN(WARN_LAYER))
	    Perl_warner(aTHX_ packWARN(WARN_LAYER), "Offset outside string");
	SETERRNO(EINVAL, SS_IVCHAN);
	return -1;
    }
    newlen = (STRLEN) s->posn;
    if (newlen > oldcur) {
	(void) SvGROW(s->var, newlen);
	Zero(SvPVX(s->var) + oldcur, newlen - oldcur, char);
	/* No SvCUR_set(), though.  This is just a seek, not a write. */
    }
    else if (!SvPVX(s->var)) {
	/* ensure there's always a character buffer */
	(void)SvGROW(s->var,1);
    }
    SvPOK_on(s->var);
    return 0;
}

Off_t
PerlIOScalar_tell(pTHX_ PerlIO * f)
{
    PerlIOScalar *s = PerlIOSelf(f, PerlIOScalar);
    return s->posn;
}

SSize_t
PerlIOScalar_unread(pTHX_ PerlIO * f, const void *vbuf, Size_t count)
{
    PerlIOScalar *s = PerlIOSelf(f, PerlIOScalar);
    char *dst = SvGROW(s->var, (STRLEN)s->posn + count);
    s->posn -= count;
    Move(vbuf, dst + s->posn, count, char);
    SvPOK_on(s->var);
    return count;
}

SSize_t
PerlIOScalar_write(pTHX_ PerlIO * f, const void *vbuf, Size_t count)
{
    if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) {
	Off_t offset;
	PerlIOScalar *s = PerlIOSelf(f, PerlIOScalar);
	SV *sv = s->var;
	char *dst;
	if ((PerlIOBase(f)->flags) & PERLIO_F_APPEND) {
	    dst = SvGROW(sv, SvCUR(sv) + count);
	    offset = SvCUR(sv);
	    s->posn = offset + count;
	}
	else {
	    if ((s->posn + count) > SvCUR(sv))
		dst = SvGROW(sv, (STRLEN)s->posn + count);
	    else
		dst = SvPV_nolen(sv);
	    offset = s->posn;
	    s->posn += count;
	}
	Move(vbuf, dst + offset, count, char);
	if ((STRLEN) s->posn > SvCUR(sv))
	    SvCUR_set(sv, (STRLEN)s->posn);
	SvPOK_on(s->var);
	return count;
    }
    else
	return 0;
}

IV
PerlIOScalar_fill(pTHX_ PerlIO * f)
{
    return -1;
}

IV
PerlIOScalar_flush(pTHX_ PerlIO * f)
{
    return 0;
}

STDCHAR *
PerlIOScalar_get_base(pTHX_ PerlIO * f)
{
    PerlIOScalar *s = PerlIOSelf(f, PerlIOScalar);
    if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) {
	return (STDCHAR *) SvPV_nolen(s->var);
    }
    return (STDCHAR *) NULL;
}

STDCHAR *
PerlIOScalar_get_ptr(pTHX_ PerlIO * f)
{
    if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) {
	PerlIOScalar *s = PerlIOSelf(f, PerlIOScalar);
	return PerlIOScalar_get_base(aTHX_ f) + s->posn;
    }
    return (STDCHAR *) NULL;
}

SSize_t
PerlIOScalar_get_cnt(pTHX_ PerlIO * f)
{
    if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) {
	PerlIOScalar *s = PerlIOSelf(f, PerlIOScalar);
	if (SvCUR(s->var) > (STRLEN) s->posn)
	    return SvCUR(s->var) - (STRLEN)s->posn;
	else
	    return 0;
    }
    return 0;
}

Size_t
PerlIOScalar_bufsiz(pTHX_ PerlIO * f)
{
    if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) {
	PerlIOScalar *s = PerlIOSelf(f, PerlIOScalar);
	return SvCUR(s->var);
    }
    return 0;
}

void
PerlIOScalar_set_ptrcnt(pTHX_ PerlIO * f, STDCHAR * ptr, SSize_t cnt)
{
    PerlIOScalar *s = PerlIOSelf(f, PerlIOScalar);
    s->posn = SvCUR(s->var) - cnt;
}

PerlIO *
PerlIOScalar_open(pTHX_ PerlIO_funcs * self, PerlIO_list_t * layers, IV n,
		  const char *mode, int fd, int imode, int perm,
		  PerlIO * f, int narg, SV ** args)
{
    SV *arg = (narg > 0) ? *args : PerlIOArg;
    if (SvROK(arg) || SvPOK(arg)) {
	if (!f) {
	    f = PerlIO_allocate(aTHX);
	}
	if ( (f = PerlIO_push(aTHX_ f, self, mode, arg)) ) {
	    PerlIOBase(f)->flags |= PERLIO_F_OPEN;
	}
	return f;
    }
    return NULL;
}

SV *
PerlIOScalar_arg(pTHX_ PerlIO * f, CLONE_PARAMS * param, int flags)
{
    PerlIOScalar *s = PerlIOSelf(f, PerlIOScalar);
    SV *var = s->var;
    if (flags & PERLIO_DUP_CLONE)
	var = PerlIO_sv_dup(aTHX_ var, param);
    else if (flags & PERLIO_DUP_FD) {
	/* Equivalent (guesses NI-S) of dup() is to create a new scalar */
	var = newSVsv(var);
    }
    else {
	var = SvREFCNT_inc(var);
    }
    return newRV_noinc(var);
}

PerlIO *
PerlIOScalar_dup(pTHX_ PerlIO * f, PerlIO * o, CLONE_PARAMS * param,
		 int flags)
{
    if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) {
	PerlIOScalar *fs = PerlIOSelf(f, PerlIOScalar);
	PerlIOScalar *os = PerlIOSelf(o, PerlIOScalar);
	/* var has been set by implicit push */
	fs->posn = os->posn;
    }
    return f;
}

PERLIO_FUNCS_DECL(PerlIO_scalar) = {
    sizeof(PerlIO_funcs),
    "scalar",
    sizeof(PerlIOScalar),
    PERLIO_K_BUFFERED | PERLIO_K_RAW,
    PerlIOScalar_pushed,
    PerlIOScalar_popped,
    PerlIOScalar_open,
    PerlIOBase_binmode,
    PerlIOScalar_arg,
    PerlIOScalar_fileno,
    PerlIOScalar_dup,
    PerlIOBase_read,
    PerlIOScalar_unread,
    PerlIOScalar_write,
    PerlIOScalar_seek,
    PerlIOScalar_tell,
    PerlIOScalar_close,
    PerlIOScalar_flush,
    PerlIOScalar_fill,
    PerlIOBase_eof,
    PerlIOBase_error,
    PerlIOBase_clearerr,
    PerlIOBase_setlinebuf,
    PerlIOScalar_get_base,
    PerlIOScalar_bufsiz,
    PerlIOScalar_get_ptr,
    PerlIOScalar_get_cnt,
    PerlIOScalar_set_ptrcnt,
};


#endif /* Layers available */

MODULE = PerlIO::scalar	PACKAGE = PerlIO::scalar

PROTOTYPES: ENABLE

BOOT:
{
#ifdef PERLIO_LAYERS
 PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_scalar));
#endif
}
Commit	Line	Data
f6c77cf1	1	#define PERL_NO_GET_CONTEXT
	2	#include "EXTERN.h"
	3	#include "perl.h"
	4	#include "XSUB.h"
	5	#ifdef PERLIO_LAYERS
	6
	7	#include "perliol.h"
	8
14d89041	9	typedef struct {
	10	struct _PerlIO base; /* Base "class" info */
	11	SV *var;
	12	Off_t posn;
f6c77cf1	13	} PerlIOScalar;
	14
	15	IV
14d89041	16	PerlIOScalar_pushed(pTHX_ PerlIO * f, const char mode, SV arg,
14d89041	17	PerlIO_funcs * tab)
f6c77cf1	18	{
14d89041	19	IV code;
	20	PerlIOScalar *s = PerlIOSelf(f, PerlIOScalar);
	21	/* If called (normally) via open() then arg is ref to scalar we are
	22	* using, otherwise arg (from binmode presumably) is either NULL
	23	* or the _name_ of the scalar
	24	*/
	25	if (arg) {
cba44c14	26	if (SvROK(arg)) {
b35bc0c6	27	if (SvREADONLY(SvRV(arg)) && mode && *mode != 'r') {
	28	if (ckWARN(WARN_LAYER))
	29	Perl_warner(aTHX_ packWARN(WARN_LAYER), PL_no_modify);
42bc49da	30	SETERRNO(EINVAL, SS_IVCHAN);
b35bc0c6	31	return -1;
b35bc0c6	32	}
14d89041	33	s->var = SvREFCNT_inc(SvRV(arg));
22ccb26d	34	SvGETMAGIC(s->var);
	35	if (!SvPOK(s->var) && SvOK(s->var))
	36	(void)SvPV_nomg_const_nolen(s->var);
14d89041	37	}
	38	else {
	39	s->var =
	40	SvREFCNT_inc(perl_get_sv
	41	(SvPV_nolen(arg), GV_ADD \| GV_ADDMULTI));
	42	}
564dc057	43	}
14d89041	44	else {
14d89041	45	s->var = newSVpvn("", 0);
564dc057	46	}
c5b94a97	47	SvUPGRADE(s->var, SVt_PV);
14d89041	48	code = PerlIOBase_pushed(aTHX_ f, mode, Nullsv, tab);
47cc46ee	49	if (!SvOK(s->var) \|\| (PerlIOBase(f)->flags) & PERLIO_F_TRUNCATE)
b162af07	50	SvCUR_set(s->var, 0);
14d89041	51	if ((PerlIOBase(f)->flags) & PERLIO_F_APPEND)
	52	s->posn = SvCUR(s->var);
	53	else
	54	s->posn = 0;
	55	return code;
f6c77cf1	56	}
	57
	58	IV
14d89041	59	PerlIOScalar_popped(pTHX_ PerlIO * f)
f6c77cf1	60	{
14d89041	61	PerlIOScalar *s = PerlIOSelf(f, PerlIOScalar);
	62	if (s->var) {
	63	SvREFCNT_dec(s->var);
	64	s->var = Nullsv;
	65	}
	66	return 0;
f6c77cf1	67	}
	68
	69	IV
14d89041	70	PerlIOScalar_close(pTHX_ PerlIO * f)
f6c77cf1	71	{
14d89041	72	IV code = PerlIOBase_close(aTHX_ f);
	73	PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF \| PERLIO_F_WRBUF);
	74	return code;
f6c77cf1	75	}
	76
	77	IV
14d89041	78	PerlIOScalar_fileno(pTHX_ PerlIO * f)
f6c77cf1	79	{
14d89041	80	return -1;
f6c77cf1	81	}
	82
	83	IV
14d89041	84	PerlIOScalar_seek(pTHX_ PerlIO * f, Off_t offset, int whence)
f6c77cf1	85	{
14d89041	86	PerlIOScalar *s = PerlIOSelf(f, PerlIOScalar);
42bc49da	87	STRLEN oldcur = SvCUR(s->var);
42bc49da	88	STRLEN newlen;
14d89041	89	switch (whence) {
42bc49da	90	case SEEK_SET:
14d89041	91	s->posn = offset;
14d89041	92	break;
42bc49da	93	case SEEK_CUR:
14d89041	94	s->posn = offset + s->posn;
14d89041	95	break;
42bc49da	96	case SEEK_END:
14d89041	97	s->posn = offset + SvCUR(s->var);
	98	break;
	99	}
42bc49da	100	if (s->posn < 0) {
	101	if (ckWARN(WARN_LAYER))
	102	Perl_warner(aTHX_ packWARN(WARN_LAYER), "Offset outside string");
	103	SETERRNO(EINVAL, SS_IVCHAN);
	104	return -1;
14d89041	105	}
42bc49da	106	newlen = (STRLEN) s->posn;
	107	if (newlen > oldcur) {
	108	(void) SvGROW(s->var, newlen);
	109	Zero(SvPVX(s->var) + oldcur, newlen - oldcur, char);
	110	/* No SvCUR_set(), though. This is just a seek, not a write. */
	111	}
8b8eea96	112	else if (!SvPVX(s->var)) {
	113	/* ensure there's always a character buffer */
	114	(void)SvGROW(s->var,1);
	115	}
42bc49da	116	SvPOK_on(s->var);
14d89041	117	return 0;
f6c77cf1	118	}
	119
	120	Off_t
14d89041	121	PerlIOScalar_tell(pTHX_ PerlIO * f)
f6c77cf1	122	{
14d89041	123	PerlIOScalar *s = PerlIOSelf(f, PerlIOScalar);
14d89041	124	return s->posn;
f6c77cf1	125	}
	126
	127	SSize_t
14d89041	128	PerlIOScalar_unread(pTHX_ PerlIO * f, const void *vbuf, Size_t count)
f6c77cf1	129	{
14d89041	130	PerlIOScalar *s = PerlIOSelf(f, PerlIOScalar);
4a9d6100	131	char *dst = SvGROW(s->var, (STRLEN)s->posn + count);
5735c168	132	s->posn -= count;
14d89041	133	Move(vbuf, dst + s->posn, count, char);
14d89041	134	SvPOK_on(s->var);
14d89041	135	return count;
f6c77cf1	136	}
	137
	138	SSize_t
14d89041	139	PerlIOScalar_write(pTHX_ PerlIO * f, const void *vbuf, Size_t count)
f6c77cf1	140	{
14d89041	141	if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) {
	142	Off_t offset;
	143	PerlIOScalar *s = PerlIOSelf(f, PerlIOScalar);
	144	SV *sv = s->var;
	145	char *dst;
	146	if ((PerlIOBase(f)->flags) & PERLIO_F_APPEND) {
	147	dst = SvGROW(sv, SvCUR(sv) + count);
	148	offset = SvCUR(sv);
	149	s->posn = offset + count;
	150	}
	151	else {
	152	if ((s->posn + count) > SvCUR(sv))
4a9d6100	153	dst = SvGROW(sv, (STRLEN)s->posn + count);
14d89041	154	else
	155	dst = SvPV_nolen(sv);
	156	offset = s->posn;
	157	s->posn += count;
	158	}
	159	Move(vbuf, dst + offset, count, char);
	160	if ((STRLEN) s->posn > SvCUR(sv))
4a9d6100	161	SvCUR_set(sv, (STRLEN)s->posn);
14d89041	162	SvPOK_on(s->var);
14d89041	163	return count;
09bf542c	164	}
14d89041	165	else
14d89041	166	return 0;
f6c77cf1	167	}
	168
	169	IV
14d89041	170	PerlIOScalar_fill(pTHX_ PerlIO * f)
f6c77cf1	171	{
14d89041	172	return -1;
f6c77cf1	173	}
	174
	175	IV
14d89041	176	PerlIOScalar_flush(pTHX_ PerlIO * f)
f6c77cf1	177	{
14d89041	178	return 0;
f6c77cf1	179	}
	180
	181	STDCHAR *
14d89041	182	PerlIOScalar_get_base(pTHX_ PerlIO * f)
f6c77cf1	183	{
14d89041	184	PerlIOScalar *s = PerlIOSelf(f, PerlIOScalar);
	185	if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) {
	186	return (STDCHAR *) SvPV_nolen(s->var);
	187	}
9849c14c	188	return (STDCHAR *) NULL;
f6c77cf1	189	}
	190
	191	STDCHAR *
14d89041	192	PerlIOScalar_get_ptr(pTHX_ PerlIO * f)
f6c77cf1	193	{
14d89041	194	if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) {
	195	PerlIOScalar *s = PerlIOSelf(f, PerlIOScalar);
	196	return PerlIOScalar_get_base(aTHX_ f) + s->posn;
	197	}
9849c14c	198	return (STDCHAR *) NULL;
f6c77cf1	199	}
	200
	201	SSize_t
14d89041	202	PerlIOScalar_get_cnt(pTHX_ PerlIO * f)
f6c77cf1	203	{
14d89041	204	if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) {
	205	PerlIOScalar *s = PerlIOSelf(f, PerlIOScalar);
	206	if (SvCUR(s->var) > (STRLEN) s->posn)
4a9d6100	207	return SvCUR(s->var) - (STRLEN)s->posn;
14d89041	208	else
	209	return 0;
	210	}
75effbe0	211	return 0;
f6c77cf1	212	}
	213
	214	Size_t
14d89041	215	PerlIOScalar_bufsiz(pTHX_ PerlIO * f)
f6c77cf1	216	{
14d89041	217	if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) {
	218	PerlIOScalar *s = PerlIOSelf(f, PerlIOScalar);
	219	return SvCUR(s->var);
	220	}
	221	return 0;
f6c77cf1	222	}
	223
	224	void
14d89041	225	PerlIOScalar_set_ptrcnt(pTHX_ PerlIO * f, STDCHAR * ptr, SSize_t cnt)
f6c77cf1	226	{
14d89041	227	PerlIOScalar *s = PerlIOSelf(f, PerlIOScalar);
14d89041	228	s->posn = SvCUR(s->var) - cnt;
f6c77cf1	229	}
	230
	231	PerlIO *
14d89041	232	PerlIOScalar_open(pTHX_ PerlIO_funcs * self, PerlIO_list_t * layers, IV n,
	233	const char *mode, int fd, int imode, int perm,
	234	PerlIO * f, int narg, SV ** args)
f6c77cf1	235	{
14d89041	236	SV arg = (narg > 0) ? args : PerlIOArg;
	237	if (SvROK(arg) \|\| SvPOK(arg)) {
	238	if (!f) {
	239	f = PerlIO_allocate(aTHX);
	240	}
e3feee4e	241	if ( (f = PerlIO_push(aTHX_ f, self, mode, arg)) ) {
14d89041	242	PerlIOBase(f)->flags \|= PERLIO_F_OPEN;
	243	}
	244	return f;
	245	}
	246	return NULL;
f6c77cf1	247	}
f6c77cf1	248
ecdeb87c	249	SV *
14d89041	250	PerlIOScalar_arg(pTHX_ PerlIO * f, CLONE_PARAMS * param, int flags)
ecdeb87c	251	{
14d89041	252	PerlIOScalar *s = PerlIOSelf(f, PerlIOScalar);
	253	SV *var = s->var;
	254	if (flags & PERLIO_DUP_CLONE)
	255	var = PerlIO_sv_dup(aTHX_ var, param);
	256	else if (flags & PERLIO_DUP_FD) {
	257	/* Equivalent (guesses NI-S) of dup() is to create a new scalar */
	258	var = newSVsv(var);
	259	}
	260	else {
	261	var = SvREFCNT_inc(var);
	262	}
	263	return newRV_noinc(var);
ecdeb87c	264	}
ecdeb87c	265
8cf8f3d1	266	PerlIO *
14d89041	267	PerlIOScalar_dup(pTHX_ PerlIO * f, PerlIO * o, CLONE_PARAMS * param,
14d89041	268	int flags)
8cf8f3d1	269	{
14d89041	270	if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) {
	271	PerlIOScalar *fs = PerlIOSelf(f, PerlIOScalar);
	272	PerlIOScalar *os = PerlIOSelf(o, PerlIOScalar);
	273	/* var has been set by implicit push */
	274	fs->posn = os->posn;
	275	}
	276	return f;
8cf8f3d1	277	}
f6c77cf1	278
27da23d5	279	PERLIO_FUNCS_DECL(PerlIO_scalar) = {
14d89041	280	sizeof(PerlIO_funcs),
	281	"scalar",
	282	sizeof(PerlIOScalar),
	283	PERLIO_K_BUFFERED \| PERLIO_K_RAW,
	284	PerlIOScalar_pushed,
	285	PerlIOScalar_popped,
	286	PerlIOScalar_open,
	287	PerlIOBase_binmode,
	288	PerlIOScalar_arg,
	289	PerlIOScalar_fileno,
	290	PerlIOScalar_dup,
	291	PerlIOBase_read,
	292	PerlIOScalar_unread,
	293	PerlIOScalar_write,
	294	PerlIOScalar_seek,
	295	PerlIOScalar_tell,
	296	PerlIOScalar_close,
	297	PerlIOScalar_flush,
	298	PerlIOScalar_fill,
	299	PerlIOBase_eof,
	300	PerlIOBase_error,
	301	PerlIOBase_clearerr,
	302	PerlIOBase_setlinebuf,
	303	PerlIOScalar_get_base,
	304	PerlIOScalar_bufsiz,
	305	PerlIOScalar_get_ptr,
	306	PerlIOScalar_get_cnt,
	307	PerlIOScalar_set_ptrcnt,
f6c77cf1	308	};
	309
	310
	311	#endif /* Layers available */
	312
e934609f	313	MODULE = PerlIO::scalar PACKAGE = PerlIO::scalar
f6c77cf1	314
acf4de66	315	PROTOTYPES: ENABLE
acf4de66	316
f6c77cf1	317	BOOT:
	318	{
	319	#ifdef PERLIO_LAYERS
27da23d5	320	PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_scalar));
f6c77cf1	321	#endif
	322	}
	323