[perl5.git] / ext / File-Glob / Glob.xs

#define PERL_NO_GET_CONTEXT

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

#include "bsd_glob.h"

#define MY_CXT_KEY "File::Glob::_guts" XS_VERSION

typedef struct {
    int		x_GLOB_ERROR;
    HV *	x_GLOB_ITER;
    HV *	x_GLOB_ENTRIES;
} my_cxt_t;

START_MY_CXT

#define GLOB_ERROR	(MY_CXT.x_GLOB_ERROR)

#include "const-c.inc"

#ifdef WIN32
#define errfunc		NULL
#else
static int
errfunc(const char *foo, int bar) {
  PERL_UNUSED_ARG(foo);
  return !(bar == EACCES || bar == ENOENT || bar == ENOTDIR);
}
#endif

static void
doglob(pTHX_ const char *pattern, int flags)
{
    dSP;
    glob_t pglob;
    int i;
    int retval;
    SV *tmp;
    {
	dMY_CXT;

	/* call glob */
	memset(&pglob, 0, sizeof(glob_t));
	retval = bsd_glob(pattern, flags, errfunc, &pglob);
	GLOB_ERROR = retval;

	/* return any matches found */
	EXTEND(sp, pglob.gl_pathc);
	for (i = 0; i < pglob.gl_pathc; i++) {
	    /* printf("# bsd_glob: %s\n", pglob.gl_pathv[i]); */
	    tmp = newSVpvn_flags(pglob.gl_pathv[i], strlen(pglob.gl_pathv[i]),
				 SVs_TEMP);
	    TAINT;
	    SvTAINT(tmp);
	    PUSHs(tmp);
	}
	PUTBACK;

	bsd_globfree(&pglob);
    }
}

/* borrowed heavily from gsar's File::DosGlob, but translated into C */
static void
iterate(pTHX_ bool(*globber)(pTHX_ SV *entries, SV *patsv))
{
    dSP;
    dMY_CXT;

    SV *cxixsv = POPs;
    const char *cxixpv;
    STRLEN cxixlen;
    SV *itersv;
    SV *entriesv;
    AV *entries;
    U32 gimme = GIMME_V;
    SV *patsv = POPs;
    bool on_stack = FALSE;

    /* assume global context if not provided one */
    SvGETMAGIC(cxixsv);
    if (SvOK(cxixsv)) cxixpv = SvPV_nomg(cxixsv, cxixlen);
    else cxixpv = "_G_", cxixlen = 3;

    if (!MY_CXT.x_GLOB_ITER) MY_CXT.x_GLOB_ITER = newHV();
    itersv = *(hv_fetch(MY_CXT.x_GLOB_ITER, cxixpv, cxixlen, 1));
    if (!SvOK(itersv)) sv_setiv(itersv,0);

    if (!MY_CXT.x_GLOB_ENTRIES) MY_CXT.x_GLOB_ENTRIES = newHV();
    entriesv = *(hv_fetch(MY_CXT.x_GLOB_ENTRIES, cxixpv, cxixlen, 1));

    /* if we're just beginning, do it all first */
    if (!SvIV(itersv)) {
	PUTBACK;
	on_stack = globber(aTHX_ entriesv, patsv);
	SPAGAIN;
    }

    /* chuck it all out, quick or slow */
    assert(SvROK(entriesv));
    entries = (AV *)SvRV(entriesv);
    if (gimme == G_ARRAY) {
	if (!on_stack) {
	    Copy(AvARRAY(entries), SP+1, AvFILLp(entries)+1, SV *);
	    SP += AvFILLp(entries)+1;
	}
	hv_delete(MY_CXT.x_GLOB_ITER, cxixpv, cxixlen, G_DISCARD);
	/* No G_DISCARD here!  It will free the stack items. */
	hv_delete(MY_CXT.x_GLOB_ENTRIES, cxixpv, cxixlen, 0);
    }
    else {
	if (AvFILLp(entries) + 1) {
	    sv_setiv(itersv, AvFILLp(entries) + 1);
	    mPUSHs(av_shift(entries));
	}
	else {
	    /* return undef for EOL */
	    hv_delete(MY_CXT.x_GLOB_ITER, cxixpv, cxixlen, G_DISCARD);
	    hv_delete(MY_CXT.x_GLOB_ENTRIES, cxixpv, cxixlen, G_DISCARD);
	    PUSHs(&PL_sv_undef);
	}
    }
    PUTBACK;
}

/* returns true if the items are on the stack already */
static bool
csh_glob(pTHX_ SV *entriesv, SV *patsv)
{
	dSP;
	const char *pat;
	AV *patav = NULL;
	AV *entries = NULL;
	const char *patend;
	const char *s = NULL;
	const char *piece = NULL;
	SV *word = NULL;
	int const flags =
	    (int)SvIV(get_sv("File::Glob::DEFAULT_FLAGS", GV_ADD));
	bool is_utf8;
	STRLEN len;
	U32 const gimme = GIMME_V;

	/* glob without args defaults to $_ */
	SvGETMAGIC(patsv);
	if (
	    !SvOK(patsv)
	 && (patsv = DEFSV, SvGETMAGIC(patsv), !SvOK(patsv))
	)
	     pat = "", len = 0, is_utf8 = 0;
	else pat = SvPV_nomg(patsv,len), is_utf8 = !!SvUTF8(patsv);
	patend = pat + len;

	/* extract patterns */
	/* XXX this is needed for compatibility with the csh
	 * implementation in Perl.  Need to support a flag
	 * to disable this behavior.
	 */
	s = pat-1;
	while (++s < patend) {
	    switch (*s) {
	    case '\'':
	    case '"' :
	      {
		bool found = FALSE;
		const char quote = *s;
		if (!word) {
		    word = newSVpvs("");
		    if (is_utf8) SvUTF8_on(word);
		}
		if (piece) sv_catpvn(word, piece, s-piece);
		piece = s+1;
		while (++s < patend)
		    if (*s == '\\') {
			s++;
			/* If the backslash is here to escape a quote,
			   obliterate it. */
			if (s < patend && *s == quote)
			    sv_catpvn(word, piece, s-piece-1), piece = s;
		    }
		    else if (*s == quote) {
			sv_catpvn(word, piece, s-piece);
			piece = NULL;
			found = TRUE;
			break;
		    }
		if (!found) { /* unmatched quote */
		    /* Give up on tokenisation and treat the whole string
		       as a single token, but with whitespace stripped. */
		    piece = pat;
		    while (isSPACE(*pat)) pat++;
		    while (isSPACE(*(patend-1))) patend--;
		    /* bsd_glob expects a trailing null, but we cannot mod-
		       ify the original */
		    if (patend < SvEND(patsv)) {
			if (word) sv_setpvn(word, pat, patend-pat);
			else
			    word = newSVpvn_flags(
				pat, patend-pat, SVf_UTF8*is_utf8
			    );
			piece = NULL;
		    }
		    else {
			if (word) SvREFCNT_dec(word), word=NULL;
			piece = pat;
			s = patend;
		    }
		    goto end_of_parsing;
		}
		break;
	      }
	    case '\\':
		if (!piece) piece = s;
		s++;
		/* If the backslash is here to escape a quote,
		   obliterate it. */
		if (s < patend && (*s == '"' || *s == '\'')) {
		    if (!word) {
			word = newSVpvn(piece,s-piece-1);
			if (is_utf8) SvUTF8_on(word);
		    }
		    else sv_catpvn(word, piece, s-piece-1);
		    piece = s;
		}
		break;
	    default:
		if (isSPACE(*s)) {
		    if (piece) {
			if (!word) {
			    word = newSVpvn(piece,s-piece);
			    if (is_utf8) SvUTF8_on(word);
			}
			else sv_catpvn(word, piece, s-piece);
		    }
		    if (!word) break;
		    if (!patav) patav = (AV *)sv_2mortal((SV *)newAV());
		    av_push(patav, word);
		    word = NULL;
		    piece = NULL;
		}
		else if (!piece) piece = s;
		break;
	    }
	}
      end_of_parsing:

	assert(!SvROK(entriesv));
	entries = (AV *)newSVrv(entriesv,NULL);
	sv_upgrade((SV *)entries, SVt_PVAV);
	
	if (patav) {
	    I32 items = AvFILLp(patav) + 1;
	    SV **svp = AvARRAY(patav);
	    while (items--) {
		PUSHMARK(SP);
		PUTBACK;
		doglob(aTHX_ SvPVXx(*svp++), flags);
		SPAGAIN;
		{
		    dMARK;
		    dORIGMARK;
		    while (++MARK <= SP)
			av_push(entries, SvREFCNT_inc_simple_NN(*MARK));
		    SP = ORIGMARK;
		}
	    }
	}
	/* piece is set at this point if there is no trailing whitespace.
	   It is the beginning of the last token or quote-delimited
	   piece thereof.  word is set at this point if the last token has
	   multiple quoted pieces. */
	if (piece || word) {
	    if (word) {
		if (piece) sv_catpvn(word, piece, s-piece);
		piece = SvPVX(word);
	    }
	    PUSHMARK(SP);
	    PUTBACK;
	    doglob(aTHX_ piece, flags);
	    if (word) SvREFCNT_dec(word);
	    SPAGAIN;
	    {
		dMARK;
		dORIGMARK;
		/* short-circuit here for a fairly common case */
		if (!patav && gimme == G_ARRAY) { PUTBACK; return TRUE; }
		while (++MARK <= SP)
		    av_push(entries, SvREFCNT_inc_simple_NN(*MARK));

		SP = ORIGMARK;
	    }
	}
	PUTBACK;
	return FALSE;
}

static void
csh_glob_iter(pTHX)
{
    iterate(aTHX_ csh_glob);
}

MODULE = File::Glob		PACKAGE = File::Glob

int
GLOB_ERROR()
    PREINIT:
	dMY_CXT;
    CODE:
	RETVAL = GLOB_ERROR;
    OUTPUT:
	RETVAL

void
bsd_glob(pattern,...)
    char *pattern
PREINIT:
    glob_t pglob;
    int i;
    int retval;
    int flags = 0;
    SV *tmp;
PPCODE:
    {
	dMY_CXT;

	/* allow for optional flags argument */
	if (items > 1) {
	    flags = (int) SvIV(ST(1));
	    /* remove unsupported flags */
	    flags &= ~(GLOB_APPEND | GLOB_DOOFFS | GLOB_ALTDIRFUNC | GLOB_MAGCHAR);
	} else {
	    flags = (int) SvIV(get_sv("File::Glob::DEFAULT_FLAGS", GV_ADD));
	}
	
	PUTBACK;
	doglob(aTHX_ pattern, flags);
	SPAGAIN;
    }

PROTOTYPES: DISABLE
void
csh_glob(...)
PPCODE:
    /* For backward-compatibility with the original Perl function, we sim-
     * ply take the first two arguments, regardless of how many there are.
     */
    if (items >= 2) SP += 2;
    else {
	SP += items;
	XPUSHs(&PL_sv_undef);
	if (!items) XPUSHs(&PL_sv_undef);
    }
    PUTBACK;
    csh_glob_iter(aTHX);
    SPAGAIN;

BOOT:
{
#ifndef PERL_EXTERNAL_GLOB
    /* Don’t do this at home! The globhook interface is highly volatile. */
    PL_globhook = csh_glob_iter;
#endif
}

BOOT:
{
    MY_CXT_INIT;
    {
	dMY_CXT;
	MY_CXT.x_GLOB_ITER = MY_CXT.x_GLOB_ENTRIES = NULL;
    }  
}

INCLUDE: const-xs.inc
Commit	Line	Data
8e9c4baf NC	1	#define PERL_NO_GET_CONTEXT
8e9c4baf NC	2
72b16652 GS	3	#include "EXTERN.h"
	4	#include "perl.h"
	5	#include "XSUB.h"
	6
	7	#include "bsd_glob.h"
	8
df3728a2	9	#define MY_CXT_KEY "File::Glob::_guts" XS_VERSION
89ca4ac7 JH	10
	11	typedef struct {
	12	int x_GLOB_ERROR;
1bb8785a FC	13	HV * x_GLOB_ITER;
1bb8785a FC	14	HV * x_GLOB_ENTRIES;
89ca4ac7 JH	15	} my_cxt_t;
	16
	17	START_MY_CXT
	18
	19	#define GLOB_ERROR (MY_CXT.x_GLOB_ERROR)
72b16652	20
1cb0fb50	21	#include "const-c.inc"
72b16652 GS	22
	23	#ifdef WIN32
	24	#define errfunc NULL
	25	#else
f681a178	26	static int
72b16652	27	errfunc(const char *foo, int bar) {
c33e8be1	28	PERL_UNUSED_ARG(foo);
5f18268b	29	return !(bar == EACCES \|\| bar == ENOENT \|\| bar == ENOTDIR);
72b16652 GS	30	}
	31	#endif
	32
1bb8785a FC	33	static void
	34	doglob(pTHX_ const char *pattern, int flags)
	35	{
	36	dSP;
	37	glob_t pglob;
	38	int i;
	39	int retval;
	40	SV *tmp;
	41	{
	42	dMY_CXT;
	43
	44	/* call glob */
	45	memset(&pglob, 0, sizeof(glob_t));
	46	retval = bsd_glob(pattern, flags, errfunc, &pglob);
	47	GLOB_ERROR = retval;
	48
	49	/* return any matches found */
	50	EXTEND(sp, pglob.gl_pathc);
	51	for (i = 0; i < pglob.gl_pathc; i++) {
	52	/* printf("# bsd_glob: %s\n", pglob.gl_pathv[i]); */
	53	tmp = newSVpvn_flags(pglob.gl_pathv[i], strlen(pglob.gl_pathv[i]),
	54	SVs_TEMP);
	55	TAINT;
	56	SvTAINT(tmp);
	57	PUSHs(tmp);
	58	}
	59	PUTBACK;
	60
	61	bsd_globfree(&pglob);
	62	}
	63	}
	64
	65	/* borrowed heavily from gsar's File::DosGlob, but translated into C */
	66	static void
88b04955	67	iterate(pTHX_ bool(globber)(pTHX_ SV entries, SV *patsv))
1bb8785a FC	68	{
	69	dSP;
	70	dMY_CXT;
	71
	72	SV *cxixsv = POPs;
	73	const char *cxixpv;
	74	STRLEN cxixlen;
1bb8785a FC	75	SV *itersv;
1bb8785a FC	76	SV *entriesv;
88b04955	77	AV *entries;
1bb8785a FC	78	U32 gimme = GIMME_V;
1bb8785a FC	79	SV *patsv = POPs;
88b04955	80	bool on_stack = FALSE;
1bb8785a FC	81
	82	/* assume global context if not provided one */
	83	SvGETMAGIC(cxixsv);
	84	if (SvOK(cxixsv)) cxixpv = SvPV_nomg(cxixsv, cxixlen);
	85	else cxixpv = "_G_", cxixlen = 3;
	86
	87	if (!MY_CXT.x_GLOB_ITER) MY_CXT.x_GLOB_ITER = newHV();
	88	itersv = *(hv_fetch(MY_CXT.x_GLOB_ITER, cxixpv, cxixlen, 1));
	89	if (!SvOK(itersv)) sv_setiv(itersv,0);
	90
	91	if (!MY_CXT.x_GLOB_ENTRIES) MY_CXT.x_GLOB_ENTRIES = newHV();
	92	entriesv = *(hv_fetch(MY_CXT.x_GLOB_ENTRIES, cxixpv, cxixlen, 1));
	93
	94	/* if we're just beginning, do it all first */
	95	if (!SvIV(itersv)) {
88b04955 FC	96	PUTBACK;
	97	on_stack = globber(aTHX_ entriesv, patsv);
	98	SPAGAIN;
	99	}
	100
	101	/* chuck it all out, quick or slow */
	102	assert(SvROK(entriesv));
	103	entries = (AV *)SvRV(entriesv);
	104	if (gimme == G_ARRAY) {
	105	if (!on_stack) {
	106	Copy(AvARRAY(entries), SP+1, AvFILLp(entries)+1, SV *);
	107	SP += AvFILLp(entries)+1;
	108	}
	109	hv_delete(MY_CXT.x_GLOB_ITER, cxixpv, cxixlen, G_DISCARD);
	110	/* No G_DISCARD here! It will free the stack items. */
	111	hv_delete(MY_CXT.x_GLOB_ENTRIES, cxixpv, cxixlen, 0);
	112	}
	113	else {
	114	if (AvFILLp(entries) + 1) {
	115	sv_setiv(itersv, AvFILLp(entries) + 1);
	116	mPUSHs(av_shift(entries));
	117	}
	118	else {
	119	/* return undef for EOL */
	120	hv_delete(MY_CXT.x_GLOB_ITER, cxixpv, cxixlen, G_DISCARD);
	121	hv_delete(MY_CXT.x_GLOB_ENTRIES, cxixpv, cxixlen, G_DISCARD);
	122	PUSHs(&PL_sv_undef);
	123	}
	124	}
	125	PUTBACK;
	126	}
	127
	128	/* returns true if the items are on the stack already */
	129	static bool
	130	csh_glob(pTHX_ SV entriesv, SV patsv)
	131	{
	132	dSP;
1bb8785a FC	133	const char *pat;
1bb8785a FC	134	AV *patav = NULL;
88b04955	135	AV *entries = NULL;
1bb8785a	136	const char *patend;
88b04955	137	const char *s = NULL;
1bb8785a FC	138	const char *piece = NULL;
	139	SV *word = NULL;
	140	int const flags =
	141	(int)SvIV(get_sv("File::Glob::DEFAULT_FLAGS", GV_ADD));
	142	bool is_utf8;
88b04955 FC	143	STRLEN len;
88b04955 FC	144	U32 const gimme = GIMME_V;
1bb8785a FC	145
	146	/* glob without args defaults to $_ */
	147	SvGETMAGIC(patsv);
	148	if (
	149	!SvOK(patsv)
	150	&& (patsv = DEFSV, SvGETMAGIC(patsv), !SvOK(patsv))
	151	)
	152	pat = "", len = 0, is_utf8 = 0;
	153	else pat = SvPV_nomg(patsv,len), is_utf8 = !!SvUTF8(patsv);
	154	patend = pat + len;
	155
	156	/* extract patterns */
	157	/* XXX this is needed for compatibility with the csh
	158	* implementation in Perl. Need to support a flag
	159	* to disable this behavior.
	160	*/
	161	s = pat-1;
	162	while (++s < patend) {
	163	switch (*s) {
	164	case '\'':
	165	case '"' :
	166	{
	167	bool found = FALSE;
e1621fc9	168	const char quote = *s;
1bb8785a FC	169	if (!word) {
	170	word = newSVpvs("");
	171	if (is_utf8) SvUTF8_on(word);
	172	}
	173	if (piece) sv_catpvn(word, piece, s-piece);
	174	piece = s+1;
f89f9e93	175	while (++s < patend)
e1621fc9 FC	176	if (*s == '\\') {
	177	s++;
	178	/* If the backslash is here to escape a quote,
	179	obliterate it. */
	180	if (s < patend && *s == quote)
	181	sv_catpvn(word, piece, s-piece-1), piece = s;
	182	}
	183	else if (*s == quote) {
1bb8785a FC	184	sv_catpvn(word, piece, s-piece);
	185	piece = NULL;
	186	found = TRUE;
	187	break;
	188	}
	189	if (!found) { /* unmatched quote */
	190	/* Give up on tokenisation and treat the whole string
	191	as a single token, but with whitespace stripped. */
	192	piece = pat;
	193	while (isSPACE(*pat)) pat++;
	194	while (isSPACE(*(patend-1))) patend--;
	195	/* bsd_glob expects a trailing null, but we cannot mod-
	196	ify the original */
	197	if (patend < SvEND(patsv)) {
	198	if (word) sv_setpvn(word, pat, patend-pat);
	199	else
	200	word = newSVpvn_flags(
	201	pat, patend-pat, SVf_UTF8*is_utf8
	202	);
	203	piece = NULL;
	204	}
	205	else {
	206	if (word) SvREFCNT_dec(word), word=NULL;
	207	piece = pat;
	208	s = patend;
	209	}
	210	goto end_of_parsing;
	211	}
	212	break;
	213	}
e1621fc9 FC	214	case '\\':
	215	if (!piece) piece = s;
	216	s++;
	217	/* If the backslash is here to escape a quote,
	218	obliterate it. */
	219	if (s < patend && (s == '"' \|\| s == '\'')) {
	220	if (!word) {
	221	word = newSVpvn(piece,s-piece-1);
	222	if (is_utf8) SvUTF8_on(word);
	223	}
	224	else sv_catpvn(word, piece, s-piece-1);
	225	piece = s;
	226	}
	227	break;
1bb8785a FC	228	default:
	229	if (isSPACE(*s)) {
	230	if (piece) {
	231	if (!word) {
	232	word = newSVpvn(piece,s-piece);
	233	if (is_utf8) SvUTF8_on(word);
	234	}
	235	else sv_catpvn(word, piece, s-piece);
	236	}
	237	if (!word) break;
	238	if (!patav) patav = (AV )sv_2mortal((SV )newAV());
	239	av_push(patav, word);
	240	word = NULL;
	241	piece = NULL;
	242	}
	243	else if (!piece) piece = s;
	244	break;
	245	}
	246	}
	247	end_of_parsing:
	248
	249	assert(!SvROK(entriesv));
	250	entries = (AV *)newSVrv(entriesv,NULL);
	251	sv_upgrade((SV *)entries, SVt_PVAV);
	252
	253	if (patav) {
	254	I32 items = AvFILLp(patav) + 1;
	255	SV **svp = AvARRAY(patav);
	256	while (items--) {
	257	PUSHMARK(SP);
	258	PUTBACK;
	259	doglob(aTHX_ SvPVXx(*svp++), flags);
	260	SPAGAIN;
	261	{
	262	dMARK;
	263	dORIGMARK;
	264	while (++MARK <= SP)
	265	av_push(entries, SvREFCNT_inc_simple_NN(*MARK));
	266	SP = ORIGMARK;
	267	}
	268	}
	269	}
	270	/* piece is set at this point if there is no trailing whitespace.
	271	It is the beginning of the last token or quote-delimited
	272	piece thereof. word is set at this point if the last token has
	273	multiple quoted pieces. */
	274	if (piece \|\| word) {
	275	if (word) {
	276	if (piece) sv_catpvn(word, piece, s-piece);
	277	piece = SvPVX(word);
	278	}
	279	PUSHMARK(SP);
	280	PUTBACK;
	281	doglob(aTHX_ piece, flags);
	282	if (word) SvREFCNT_dec(word);
	283	SPAGAIN;
	284	{
	285	dMARK;
	286	dORIGMARK;
1bb8785a	287	/* short-circuit here for a fairly common case */
88b04955	288	if (!patav && gimme == G_ARRAY) { PUTBACK; return TRUE; }
c0d74586 FC	289	while (++MARK <= SP)
c0d74586 FC	290	av_push(entries, SvREFCNT_inc_simple_NN(*MARK));
1bb8785a FC	291
	292	SP = ORIGMARK;
	293	}
	294	}
88b04955 FC	295	PUTBACK;
	296	return FALSE;
	297	}
1bb8785a	298
88b04955 FC	299	static void
	300	csh_glob_iter(pTHX)
	301	{
	302	iterate(aTHX_ csh_glob);
1bb8785a FC	303	}
1bb8785a FC	304
72b16652 GS	305	MODULE = File::Glob PACKAGE = File::Glob
72b16652 GS	306
b84cd0b1 NC	307	int
	308	GLOB_ERROR()
	309	PREINIT:
	310	dMY_CXT;
	311	CODE:
	312	RETVAL = GLOB_ERROR;
	313	OUTPUT:
	314	RETVAL
	315
72b16652	316	void
960ddb65	317	bsd_glob(pattern,...)
72b16652	318	char *pattern
72b16652 GS	319	PREINIT:
	320	glob_t pglob;
	321	int i;
	322	int retval;
	323	int flags = 0;
	324	SV *tmp;
	325	PPCODE:
	326	{
89ca4ac7 JH	327	dMY_CXT;
89ca4ac7 JH	328
72b16652 GS	329	/* allow for optional flags argument */
	330	if (items > 1) {
	331	flags = (int) SvIV(ST(1));
3c97495f CB	332	/* remove unsupported flags */
3c97495f CB	333	flags &= ~(GLOB_APPEND \| GLOB_DOOFFS \| GLOB_ALTDIRFUNC \| GLOB_MAGCHAR);
960ddb65	334	} else {
28cd8e1d	335	flags = (int) SvIV(get_sv("File::Glob::DEFAULT_FLAGS", GV_ADD));
72b16652	336	}
1bb8785a FC	337
	338	PUTBACK;
	339	doglob(aTHX_ pattern, flags);
	340	SPAGAIN;
	341	}
72b16652	342
1bb8785a FC	343	PROTOTYPES: DISABLE
	344	void
	345	csh_glob(...)
	346	PPCODE:
	347	/* For backward-compatibility with the original Perl function, we sim-
	348	* ply take the first two arguments, regardless of how many there are.
	349	*/
	350	if (items >= 2) SP += 2;
	351	else {
	352	SP += items;
	353	XPUSHs(&PL_sv_undef);
	354	if (!items) XPUSHs(&PL_sv_undef);
72b16652	355	}
1bb8785a	356	PUTBACK;
88b04955	357	csh_glob_iter(aTHX);
1bb8785a	358	SPAGAIN;
72b16652	359
28cd8e1d NC	360	BOOT:
28cd8e1d NC	361	{
d67594ff FC	362	#ifndef PERL_EXTERNAL_GLOB
d67594ff FC	363	/* Don’t do this at home! The globhook interface is highly volatile. */
88b04955	364	PL_globhook = csh_glob_iter;
d67594ff	365	#endif
bcd258b8	366	}
28cd8e1d	367
bcd258b8 NC	368	BOOT:
bcd258b8 NC	369	{
28cd8e1d	370	MY_CXT_INIT;
1bb8785a FC	371	{
	372	dMY_CXT;
	373	MY_CXT.x_GLOB_ITER = MY_CXT.x_GLOB_ENTRIES = NULL;
	374	}
28cd8e1d NC	375	}
28cd8e1d NC	376
1cb0fb50	377	INCLUDE: const-xs.inc