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

/*
 $Id: Encode.xs,v 1.43 2002/05/01 05:41:06 dankogai Exp dankogai $
 */

#define PERL_NO_GET_CONTEXT
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#define U8 U8
#include "encode.h"

# define PERLIO_MODNAME  "PerlIO::encoding"
# define PERLIO_FILENAME "PerlIO/encoding.pm"

/* set 1 or more to profile.  t/encoding.t dumps core because of
   Perl_warner and PerlIO don't work well */
#define ENCODE_XS_PROFILE 0

/* set 0 to disable floating point to calculate buffer size for
   encode_method().  1 is recommended. 2 restores NI-S original */
#define ENCODE_XS_USEFP   1

#define UNIMPLEMENTED(x,y) y x (SV *sv, char *encoding) {dTHX;   \
                         Perl_croak(aTHX_ "panic_unimplemented"); \
			 return (y)0; /* fool picky compilers */ \
                         }
/**/

UNIMPLEMENTED(_encoded_utf8_to_bytes, I32)
UNIMPLEMENTED(_encoded_bytes_to_utf8, I32)

void
Encode_XSEncoding(pTHX_ encode_t * enc)
{
    dSP;
    HV *stash = gv_stashpv("Encode::XS", TRUE);
    SV *sv = sv_bless(newRV_noinc(newSViv(PTR2IV(enc))), stash);
    int i = 0;
    PUSHMARK(sp);
    XPUSHs(sv);
    while (enc->name[i]) {
	const char *name = enc->name[i++];
	XPUSHs(sv_2mortal(newSVpvn(name, strlen(name))));
    }
    PUTBACK;
    call_pv("Encode::define_encoding", G_DISCARD);
    SvREFCNT_dec(sv);
}

void
call_failure(SV * routine, U8 * done, U8 * dest, U8 * orig)
{
    /* Exists for breakpointing */
}


static SV *
encode_method(pTHX_ encode_t * enc, encpage_t * dir, SV * src,
	      int check)
{
    STRLEN slen;
    U8 *s = (U8 *) SvPV(src, slen);
    STRLEN tlen  = slen;
    STRLEN ddone = 0;
    STRLEN sdone = 0;

    /* We allocate slen+1.
       PerlIO dumps core if this value is smaller than this. */
    SV *dst = sv_2mortal(newSV(slen+1));
    U8 *d = (U8 *)SvPVX(dst);
    STRLEN dlen = SvLEN(dst)-1;
    int code;

    if (!slen){
	SvCUR_set(dst, 0);
	SvPOK_only(dst);
	goto ENCODE_END;
    }

    while (code = do_encode(dir, s, &slen, d, dlen, &dlen, !check))
    {
	SvCUR_set(dst, dlen+ddone);
	SvPOK_only(dst);
	
	if (code == ENCODE_FALLBACK || code == ENCODE_PARTIAL){
	    break;
	}
	switch (code) {
	case ENCODE_NOSPACE:
	{	
	    STRLEN more = 0; /* make sure you initialize! */
	    STRLEN sleft;
	    sdone += slen;
	    ddone += dlen;
	    sleft = tlen - sdone;
#if ENCODE_XS_PROFILE >= 2
	    Perl_warn(aTHX_
		      "more=%d, sdone=%d, sleft=%d, SvLEN(dst)=%d\n",
		      more, sdone, sleft, SvLEN(dst));
#endif
	    if (sdone != 0) { /* has src ever been processed ? */
#if   ENCODE_XS_USEFP == 2
		more = (1.0*tlen*SvLEN(dst)+sdone-1)/sdone
		    - SvLEN(dst);
#elif ENCODE_XS_USEFP
		more = (1.0*SvLEN(dst)+1)/sdone * sleft;
#else
		/* safe until SvLEN(dst) == MAX_INT/16 */
		more = (16*SvLEN(dst)+1)/sdone/16 * sleft;
#endif
	    }
	    more += UTF8_MAXLEN; /* insurance policy */
	    d = (U8 *) SvGROW(dst, SvLEN(dst) + more);
	    /* dst need to grow need MORE bytes! */
	    if (ddone >= SvLEN(dst)) {
		Perl_croak(aTHX_ "Destination couldn't be grown.");
	    }
	    dlen = SvLEN(dst)-ddone-1;
	    d   += ddone;
	    s   += slen;
	    slen = tlen-sdone;
	    continue;
	}
	case ENCODE_NOREP:
	    /* encoding */	
	    if (dir == enc->f_utf8) {
		STRLEN clen;
		UV ch =
		    utf8n_to_uvuni(s+slen, (SvCUR(src)-slen),
				   &clen, UTF8_ALLOW_ANY|UTF8_CHECK_ONLY);
		if (check & ENCODE_DIE_ON_ERR) {
		    Perl_croak(
                       aTHX_ "\"\\x{%04" UVxf "}\" does not map to %s",
			(UV)ch, enc->name[0]);
		    return &PL_sv_undef; /* never reaches but be safe */
		}
		if (check & ENCODE_WARN_ON_ERR){
		    Perl_warner(aTHX_ packWARN(WARN_UTF8),
                               "\"\\x{%" UVxf "}\" does not map to %s",
				(UV)ch, enc->name[0]);
		}
		if (check & ENCODE_RETURN_ON_ERR){
		    goto ENCODE_SET_SRC;
		}
		if (check & ENCODE_PERLQQ){
		    SV* perlqq = 
			sv_2mortal(newSVpvf("\\x{%04"UVxf"}", (UV)ch));
		    sdone += slen + clen;
		    ddone += dlen + SvCUR(perlqq);
		    sv_catsv(dst, perlqq);
		}else if (check & ENCODE_HTMLCREF){
		    SV* htmlcref = 
			sv_2mortal(newSVpvf("&#%" UVuf ";", (UV)ch));
		    sdone += slen + clen;
		    ddone += dlen + SvCUR(htmlcref);
		    sv_catsv(dst, htmlcref);
		}else if (check & ENCODE_XMLCREF){
		    SV* xmlcref = 
			sv_2mortal(newSVpvf("&#x%" UVxf ";", (UV)ch));
		    sdone += slen + clen;
		    ddone += dlen + SvCUR(xmlcref);
		    sv_catsv(dst, xmlcref);
		} else {
		    /* fallback char */
		    sdone += slen + clen;
		    ddone += dlen + enc->replen;
		    sv_catpvn(dst, (char*)enc->rep, enc->replen);
		}
	    }
	    /* decoding */
	    else {
		if (check & ENCODE_DIE_ON_ERR){
		    Perl_croak(
			aTHX_ "%s \"\\x%02" UVXf 
			"\" does not map to Unicode (%d)",
			(UV)enc->name[0], (U8)s[slen], code);
		    return &PL_sv_undef; /* never reaches but be safe */
		}
		if (check & ENCODE_WARN_ON_ERR){
		    Perl_warner(
			aTHX_ packWARN(WARN_UTF8),
			"%s \"\\x%02" UVXf
			"\" does not map to Unicode (%d)",
			(UV)enc->name[0], (U8)s[slen], code);
		}
		if (check & ENCODE_RETURN_ON_ERR){
		    goto ENCODE_SET_SRC;
		}
		if (check &
		    (ENCODE_PERLQQ|ENCODE_HTMLCREF|ENCODE_XMLCREF)){
		    SV* perlqq = 
			sv_2mortal(newSVpvf("\\x%02" UVXf, (UV)s[slen]));
		    sdone += slen + 1;
		    ddone += dlen + SvCUR(perlqq);
		    sv_catsv(dst, perlqq);
		} else {
		    sdone += slen + 1;
		    ddone += dlen + strlen(FBCHAR_UTF8);
		    sv_catpv(dst, FBCHAR_UTF8);
		}
	    }
	    /* settle variables when fallback */
	    d    = (U8 *)SvEND(dst);
            dlen = SvLEN(dst) - ddone - 1;
	    s    = (U8*)SvPVX(src) + sdone;
	    slen = tlen - sdone;
	    break;

	default:
	    Perl_croak(aTHX_ "Unexpected code %d converting %s %s",
		       code, (dir == enc->f_utf8) ? "to" : "from",
		       enc->name[0]);
	    return &PL_sv_undef;
	}
    }
 ENCODE_SET_SRC:
    if (check && !(check & ENCODE_LEAVE_SRC)){
	sdone = SvCUR(src) - (slen+sdone);
	if (sdone) {
	    sv_setpvn(src, (char*)s+slen, sdone);
	}
	SvCUR_set(src, sdone);
    }
    /* warn("check = 0x%X, code = 0x%d\n", check, code); */

    SvCUR_set(dst, dlen+ddone);
    SvPOK_only(dst);

#if ENCODE_XS_PROFILE
    if (SvCUR(dst) > SvCUR(src)){
	Perl_warn(aTHX_
		  "SvLEN(dst)=%d, SvCUR(dst)=%d. %d bytes unused(%f %%)\n",
		  SvLEN(dst), SvCUR(dst), SvLEN(dst) - SvCUR(dst),
		  (SvLEN(dst) - SvCUR(dst))*1.0/SvLEN(dst)*100.0);
    }
#endif

 ENCODE_END:
    *SvEND(dst) = '\0';
    return dst;
}

MODULE = Encode		PACKAGE = Encode::XS	PREFIX = Method_

PROTOTYPES: ENABLE

void
Method_name(obj)
SV *	obj
CODE:
{
    encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj)));
    ST(0) = sv_2mortal(newSVpvn(enc->name[0],strlen(enc->name[0])));
    XSRETURN(1);
}

void
Method_decode(obj,src,check = 0)
SV *	obj
SV *	src
int	check
CODE:
{
    encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj)));
    ST(0) = encode_method(aTHX_ enc, enc->t_utf8, src, check);
    SvUTF8_on(ST(0));
    XSRETURN(1);
}

void
Method_encode(obj,src,check = 0)
SV *	obj
SV *	src
int	check
CODE:
{
    encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj)));
    sv_utf8_upgrade(src);
    ST(0) = encode_method(aTHX_ enc, enc->f_utf8, src, check);
    XSRETURN(1);
}

void
Method_needs_lines(obj)
SV *	obj
CODE:
{
    encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj)));
    ST(0) = &PL_sv_no;
    XSRETURN(1);
}

void
Method_perlio_ok(obj)
SV *	obj
CODE:
{
    encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj)));
    /* require_pv(PERLIO_FILENAME); */

    eval_pv("require PerlIO::encoding", 0);

    if (SvTRUE(get_sv("@", 0))) {
	ST(0) = &PL_sv_no;
    }else{
	ST(0) = &PL_sv_yes;
    }
    XSRETURN(1);
}

MODULE = Encode         PACKAGE = Encode

PROTOTYPES: ENABLE

I32
_bytes_to_utf8(sv, ...)
SV *    sv
CODE:
{
    SV * encoding = items == 2 ? ST(1) : Nullsv;

    if (encoding)
    RETVAL = _encoded_bytes_to_utf8(sv, SvPV_nolen(encoding));
    else {
	STRLEN len;
	U8*    s = (U8*)SvPV(sv, len);
	U8*    converted;

	converted = bytes_to_utf8(s, &len); /* This allocs */
	sv_setpvn(sv, (char *)converted, len);
	SvUTF8_on(sv); /* XXX Should we? */
	Safefree(converted);                /* ... so free it */
	RETVAL = len;
    }
}
OUTPUT:
    RETVAL

I32
_utf8_to_bytes(sv, ...)
SV *    sv
CODE:
{
    SV * to    = items > 1 ? ST(1) : Nullsv;
    SV * check = items > 2 ? ST(2) : Nullsv;

    if (to) {
	RETVAL = _encoded_utf8_to_bytes(sv, SvPV_nolen(to));
    } else {
	STRLEN len;
	U8 *s = (U8*)SvPV(sv, len);

	RETVAL = 0;
	if (SvTRUE(check)) {
	    /* Must do things the slow way */
	    U8 *dest;
            /* We need a copy to pass to check() */
	    U8 *src  = (U8*)savepv((char *)s);
	    U8 *send = s + len;

	    New(83, dest, len, U8); /* I think */

	    while (s < send) {
                if (*s < 0x80){
		    *dest++ = *s++;
                } else {
		    STRLEN ulen;
		    UV uv = *s++;

		    /* Have to do it all ourselves because of error routine,
		       aargh. */
		    if (!(uv & 0x40)){ goto failure; }
		    if      (!(uv & 0x20)) { ulen = 2;  uv &= 0x1f; }
		    else if (!(uv & 0x10)) { ulen = 3;  uv &= 0x0f; }
		    else if (!(uv & 0x08)) { ulen = 4;  uv &= 0x07; }
		    else if (!(uv & 0x04)) { ulen = 5;  uv &= 0x03; }
		    else if (!(uv & 0x02)) { ulen = 6;  uv &= 0x01; }
		    else if (!(uv & 0x01)) { ulen = 7;  uv = 0; }
		    else                   { ulen = 13; uv = 0; }
		
		    /* Note change to utf8.c variable naming, for variety */
		    while (ulen--) {
			if ((*s & 0xc0) != 0x80){
			    goto failure;
			} else {
			    uv = (uv << 6) | (*s++ & 0x3f);
			}
		  }
		  if (uv > 256) {
		  failure:
		      call_failure(check, s, dest, src);
		      /* Now what happens? */
		  }
		  *dest++ = (U8)uv;
		}
	    }
	} else {
	    RETVAL = (utf8_to_bytes(s, &len) ? len : 0);
	}
    }
}
OUTPUT:
    RETVAL

bool
is_utf8(sv, check = 0)
SV *	sv
int	check
CODE:
{
    if (SvGMAGICAL(sv)) /* it could be $1, for example */
	sv = newSVsv(sv); /* GMAGIG will be done */
    if (SvPOK(sv)) {
	RETVAL = SvUTF8(sv) ? TRUE : FALSE;
	if (RETVAL &&
	    check  &&
	    !is_utf8_string((U8*)SvPVX(sv), SvCUR(sv)))
	    RETVAL = FALSE;
    } else {
	RETVAL = FALSE;
    }
    if (sv != ST(0))
	SvREFCNT_dec(sv); /* it was a temp copy */
}
OUTPUT:
    RETVAL

SV *
_utf8_on(sv)
SV *	sv
CODE:
{
    if (SvPOK(sv)) {
	SV *rsv = newSViv(SvUTF8(sv));
	RETVAL = rsv;
	SvUTF8_on(sv);
    } else {
	RETVAL = &PL_sv_undef;
    }
}
OUTPUT:
    RETVAL

SV *
_utf8_off(sv)
SV *	sv
CODE:
{
    if (SvPOK(sv)) {
	SV *rsv = newSViv(SvUTF8(sv));
	RETVAL = rsv;
	SvUTF8_off(sv);
    } else {
	RETVAL = &PL_sv_undef;
    }
}
OUTPUT:
    RETVAL

int
DIE_ON_ERR()
CODE:
    RETVAL = ENCODE_DIE_ON_ERR;
OUTPUT:
    RETVAL

int
WARN_ON_ERR()
CODE:
    RETVAL = ENCODE_WARN_ON_ERR;
OUTPUT:
    RETVAL

int
LEAVE_SRC()
CODE:
    RETVAL = ENCODE_LEAVE_SRC;
OUTPUT:
    RETVAL

int
RETURN_ON_ERR()
CODE:
    RETVAL = ENCODE_RETURN_ON_ERR;
OUTPUT:
    RETVAL

int
PERLQQ()
CODE:
    RETVAL = ENCODE_PERLQQ;
OUTPUT:
    RETVAL

int
HTMLCREF()
CODE:
    RETVAL = ENCODE_HTMLCREF;
OUTPUT:
    RETVAL

int
XMLCREF()
CODE:
    RETVAL = ENCODE_XMLCREF;
OUTPUT:
    RETVAL

int
FB_DEFAULT()
CODE:
    RETVAL = ENCODE_FB_DEFAULT;
OUTPUT:
    RETVAL

int
FB_CROAK()
CODE:
    RETVAL = ENCODE_FB_CROAK;
OUTPUT:
    RETVAL

int
FB_QUIET()
CODE:
    RETVAL = ENCODE_FB_QUIET;
OUTPUT:
    RETVAL

int
FB_WARN()
CODE:
    RETVAL = ENCODE_FB_WARN;
OUTPUT:
    RETVAL

int
FB_PERLQQ()
CODE:
    RETVAL = ENCODE_FB_PERLQQ;
OUTPUT:
    RETVAL

int
FB_HTMLCREF()
CODE:
    RETVAL = ENCODE_FB_HTMLCREF;
OUTPUT:
    RETVAL

int
FB_XMLCREF()
CODE:
    RETVAL = ENCODE_FB_XMLCREF;
OUTPUT:
    RETVAL

BOOT:
{
#include "def_t.h"
#include "def_t.exh"
}
Commit	Line	Data
85982a32	1	/*
4089adc4	2	$Id: Encode.xs,v 1.43 2002/05/01 05:41:06 dankogai Exp dankogai $
85982a32	3	*/
85982a32	4
fcf2db38	5	#define PERL_NO_GET_CONTEXT
2c674647	6	#include "EXTERN.h"
	7	#include "perl.h"
	8	#include "XSUB.h"
2f2b4ff2	9	#define U8 U8
2f2b4ff2	10	#include "encode.h"
10c5ecbb	11
10c5ecbb	12	# define PERLIO_MODNAME "PerlIO::encoding"
0ab8f81e	13	# define PERLIO_FILENAME "PerlIO/encoding.pm"
aae85ceb	14
85982a32	15	/* set 1 or more to profile. t/encoding.t dumps core because of
85982a32	16	Perl_warner and PerlIO don't work well */
c6a7db43	17	#define ENCODE_XS_PROFILE 0
39cf9a5e	18
85982a32	19	/* set 0 to disable floating point to calculate buffer size for
85982a32	20	encode_method(). 1 is recommended. 2 restores NI-S original */
c6a7db43	21	#define ENCODE_XS_USEFP 1
39cf9a5e	22
fcf2db38	23	#define UNIMPLEMENTED(x,y) y x (SV sv, char encoding) {dTHX; \
2f5768b8	24	Perl_croak(aTHX_ "panic_unimplemented"); \
4a83738a	25	return (y)0; /* fool picky compilers */ \
87714904	26	}
85982a32	27	/**/
011b2d2f	28
7e9a885a	29	UNIMPLEMENTED(_encoded_utf8_to_bytes, I32)
7e9a885a	30	UNIMPLEMENTED(_encoded_bytes_to_utf8, I32)
33af2bc7	31
b0b300a3	32	void
aa0053b7	33	Encode_XSEncoding(pTHX_ encode_t * enc)
2f2b4ff2	34	{
aa0053b7	35	dSP;
	36	HV *stash = gv_stashpv("Encode::XS", TRUE);
	37	SV *sv = sv_bless(newRV_noinc(newSViv(PTR2IV(enc))), stash);
	38	int i = 0;
	39	PUSHMARK(sp);
	40	XPUSHs(sv);
	41	while (enc->name[i]) {
	42	const char *name = enc->name[i++];
	43	XPUSHs(sv_2mortal(newSVpvn(name, strlen(name))));
	44	}
	45	PUTBACK;
	46	call_pv("Encode::define_encoding", G_DISCARD);
	47	SvREFCNT_dec(sv);
2f2b4ff2	48	}
2f2b4ff2	49
aa0053b7	50	void
	51	call_failure(SV * routine, U8 * done, U8 * dest, U8 * orig)
	52	{
85982a32	53	/* Exists for breakpointing */
aa0053b7	54	}
67e989fb	55
85982a32	56
2f2b4ff2	57	static SV *
aa0053b7	58	encode_method(pTHX_ encode_t * enc, encpage_t * dir, SV * src,
85982a32	59	int check)
2f2b4ff2	60	{
aa0053b7	61	STRLEN slen;
aa0053b7	62	U8 s = (U8 ) SvPV(src, slen);
3aececda	63	STRLEN tlen = slen;
	64	STRLEN ddone = 0;
	65	STRLEN sdone = 0;
39cf9a5e	66
3c49ab08	67	/* We allocate slen+1.
85982a32	68	PerlIO dumps core if this value is smaller than this. */
3c49ab08	69	SV *dst = sv_2mortal(newSV(slen+1));
85982a32	70	U8 d = (U8 )SvPVX(dst);
	71	STRLEN dlen = SvLEN(dst)-1;
	72	int code;
	73
	74	if (!slen){
	75	SvCUR_set(dst, 0);
	76	SvPOK_only(dst);
	77	goto ENCODE_END;
	78	}
	79
	80	while (code = do_encode(dir, s, &slen, d, dlen, &dlen, !check))
	81	{
	82	SvCUR_set(dst, dlen+ddone);
	83	SvPOK_only(dst);
0b3236bb	84
85982a32	85	if (code == ENCODE_FALLBACK \|\| code == ENCODE_PARTIAL){
	86	break;
	87	}
	88	switch (code) {
	89	case ENCODE_NOSPACE:
	90	{
	91	STRLEN more = 0; /* make sure you initialize! */
	92	STRLEN sleft;
	93	sdone += slen;
	94	ddone += dlen;
	95	sleft = tlen - sdone;
fcb875d4	96	#if ENCODE_XS_PROFILE >= 2
85982a32	97	Perl_warn(aTHX_
	98	"more=%d, sdone=%d, sleft=%d, SvLEN(dst)=%d\n",
	99	more, sdone, sleft, SvLEN(dst));
fcb875d4	100	#endif
85982a32	101	if (sdone != 0) { /* has src ever been processed ? */
39cf9a5e	102	#if ENCODE_XS_USEFP == 2
85982a32	103	more = (1.0tlenSvLEN(dst)+sdone-1)/sdone
85982a32	104	- SvLEN(dst);
39cf9a5e	105	#elif ENCODE_XS_USEFP
85982a32	106	more = (1.0SvLEN(dst)+1)/sdone sleft;
39cf9a5e	107	#else
85982a32	108	/* safe until SvLEN(dst) == MAX_INT/16 */
85982a32	109	more = (16SvLEN(dst)+1)/sdone/16 sleft;
39cf9a5e	110	#endif
39cf9a5e	111	}
85982a32	112	more += UTF8_MAXLEN; /* insurance policy */
	113	d = (U8 *) SvGROW(dst, SvLEN(dst) + more);
	114	/* dst need to grow need MORE bytes! */
	115	if (ddone >= SvLEN(dst)) {
	116	Perl_croak(aTHX_ "Destination couldn't be grown.");
	117	}
	118	dlen = SvLEN(dst)-ddone-1;
	119	d += ddone;
	120	s += slen;
	121	slen = tlen-sdone;
	122	continue;
	123	}
	124	case ENCODE_NOREP:
	125	/* encoding */
c6a7db43	126	if (dir == enc->f_utf8) {
85982a32	127	STRLEN clen;
85982a32	128	UV ch =
3e952a88	129	utf8n_to_uvuni(s+slen, (SvCUR(src)-slen),
b0b300a3	130	&clen, UTF8_ALLOW_ANY\|UTF8_CHECK_ONLY);
85982a32	131	if (check & ENCODE_DIE_ON_ERR) {
85982a32	132	Perl_croak(
83049857	133	aTHX_ "\"\\x{%04" UVxf "}\" does not map to %s",
4089adc4	134	(UV)ch, enc->name[0]);
	135	return &PL_sv_undef; /* never reaches but be safe */
	136	}
	137	if (check & ENCODE_WARN_ON_ERR){
	138	Perl_warner(aTHX_ packWARN(WARN_UTF8),
83049857	139	"\"\\x{%" UVxf "}\" does not map to %s",
4089adc4	140	(UV)ch, enc->name[0]);
	141	}
	142	if (check & ENCODE_RETURN_ON_ERR){
	143	goto ENCODE_SET_SRC;
	144	}
	145	if (check & ENCODE_PERLQQ){
	146	SV* perlqq =
	147	sv_2mortal(newSVpvf("\\x{%04"UVxf"}", (UV)ch));
	148	sdone += slen + clen;
	149	ddone += dlen + SvCUR(perlqq);
	150	sv_catsv(dst, perlqq);
	151	}else if (check & ENCODE_HTMLCREF){
	152	SV* htmlcref =
	153	sv_2mortal(newSVpvf("&#%" UVuf ";", (UV)ch));
	154	sdone += slen + clen;
	155	ddone += dlen + SvCUR(htmlcref);
	156	sv_catsv(dst, htmlcref);
	157	}else if (check & ENCODE_XMLCREF){
	158	SV* xmlcref =
	159	sv_2mortal(newSVpvf("&#x%" UVxf ";", (UV)ch));
	160	sdone += slen + clen;
	161	ddone += dlen + SvCUR(xmlcref);
	162	sv_catsv(dst, xmlcref);
	163	} else {
	164	/* fallback char */
	165	sdone += slen + clen;
	166	ddone += dlen + enc->replen;
	167	sv_catpvn(dst, (char*)enc->rep, enc->replen);
c6a7db43	168	}
b2704119	169	}
85982a32	170	/* decoding */
c6a7db43	171	else {
85982a32	172	if (check & ENCODE_DIE_ON_ERR){
85982a32	173	Perl_croak(
4089adc4	174	aTHX_ "%s \"\\x%02" UVXf
fc17bd48	175	"\" does not map to Unicode (%d)",
4089adc4	176	(UV)enc->name[0], (U8)s[slen], code);
	177	return &PL_sv_undef; /* never reaches but be safe */
	178	}
	179	if (check & ENCODE_WARN_ON_ERR){
	180	Perl_warner(
	181	aTHX_ packWARN(WARN_UTF8),
	182	"%s \"\\x%02" UVXf
	183	"\" does not map to Unicode (%d)",
	184	(UV)enc->name[0], (U8)s[slen], code);
	185	}
	186	if (check & ENCODE_RETURN_ON_ERR){
	187	goto ENCODE_SET_SRC;
	188	}
	189	if (check &
	190	(ENCODE_PERLQQ\|ENCODE_HTMLCREF\|ENCODE_XMLCREF)){
	191	SV* perlqq =
	192	sv_2mortal(newSVpvf("\\x%02" UVXf, (UV)s[slen]));
	193	sdone += slen + 1;
	194	ddone += dlen + SvCUR(perlqq);
	195	sv_catsv(dst, perlqq);
	196	} else {
	197	sdone += slen + 1;
	198	ddone += dlen + strlen(FBCHAR_UTF8);
	199	sv_catpv(dst, FBCHAR_UTF8);
aa0053b7	200	}
b2704119	201	}
85982a32	202	/* settle variables when fallback */
b0b300a3	203	d = (U8 *)SvEND(dst);
b0b300a3	204	dlen = SvLEN(dst) - ddone - 1;
3e952a88	205	s = (U8*)SvPVX(src) + sdone;
b2704119	206	slen = tlen - sdone;
b2704119	207	break;
2f2b4ff2	208
85982a32	209	default:
	210	Perl_croak(aTHX_ "Unexpected code %d converting %s %s",
	211	code, (dir == enc->f_utf8) ? "to" : "from",
	212	enc->name[0]);
	213	return &PL_sv_undef;
aa0053b7	214	}
85982a32	215	}
85982a32	216	ENCODE_SET_SRC:
ca777f1c	217	if (check && !(check & ENCODE_LEAVE_SRC)){
ca777f1c	218	sdone = SvCUR(src) - (slen+sdone);
85982a32	219	if (sdone) {
85982a32	220	sv_setpvn(src, (char*)s+slen, sdone);
aa0053b7	221	}
85982a32	222	SvCUR_set(src, sdone);
2f2b4ff2	223	}
85982a32	224	/* warn("check = 0x%X, code = 0x%d\n", check, code); */
c6a7db43	225
85982a32	226	SvCUR_set(dst, dlen+ddone);
85982a32	227	SvPOK_only(dst);
c6a7db43	228
39cf9a5e	229	#if ENCODE_XS_PROFILE
39cf9a5e	230	if (SvCUR(dst) > SvCUR(src)){
85982a32	231	Perl_warn(aTHX_
	232	"SvLEN(dst)=%d, SvCUR(dst)=%d. %d bytes unused(%f %%)\n",
	233	SvLEN(dst), SvCUR(dst), SvLEN(dst) - SvCUR(dst),
	234	(SvLEN(dst) - SvCUR(dst))1.0/SvLEN(dst)100.0);
39cf9a5e	235	}
3c49ab08	236	#endif
c6a7db43	237
85982a32	238	ENCODE_END:
0b3236bb	239	*SvEND(dst) = '\0';
aa0053b7	240	return dst;
2f2b4ff2	241	}
2f2b4ff2	242
50d26985	243	MODULE = Encode PACKAGE = Encode::XS PREFIX = Method_
2f2b4ff2	244
	245	PROTOTYPES: ENABLE
	246
	247	void
0a95303c	248	Method_name(obj)
	249	SV * obj
	250	CODE:
85982a32	251	{
	252	encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj)));
	253	ST(0) = sv_2mortal(newSVpvn(enc->name[0],strlen(enc->name[0])));
	254	XSRETURN(1);
	255	}
0a95303c	256
0a95303c	257	void
b2704119	258	Method_decode(obj,src,check = 0)
2f2b4ff2	259	SV * obj
2f2b4ff2	260	SV * src
b2704119	261	int check
2f2b4ff2	262	CODE:
aae85ceb	263	{
85982a32	264	encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj)));
	265	ST(0) = encode_method(aTHX_ enc, enc->t_utf8, src, check);
	266	SvUTF8_on(ST(0));
aae85ceb	267	XSRETURN(1);
	268	}
	269
	270	void
85982a32	271	Method_encode(obj,src,check = 0)
aae85ceb	272	SV * obj
85982a32	273	SV * src
85982a32	274	int check
aae85ceb	275	CODE:
aae85ceb	276	{
85982a32	277	encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj)));
	278	sv_utf8_upgrade(src);
	279	ST(0) = encode_method(aTHX_ enc, enc->f_utf8, src, check);
aae85ceb	280	XSRETURN(1);
	281	}
	282
0ab8f81e	283	void
	284	Method_needs_lines(obj)
	285	SV * obj
	286	CODE:
	287	{
	288	encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj)));
	289	ST(0) = &PL_sv_no;
	290	XSRETURN(1);
	291	}
	292
	293	void
	294	Method_perlio_ok(obj)
	295	SV * obj
	296	CODE:
	297	{
	298	encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj)));
10c5ecbb	299	/* require_pv(PERLIO_FILENAME); */
	300
	301	eval_pv("require PerlIO::encoding", 0);
	302
	303	if (SvTRUE(get_sv("@", 0))) {
0ab8f81e	304	ST(0) = &PL_sv_no;
10c5ecbb	305	}else{
10c5ecbb	306	ST(0) = &PL_sv_yes;
0ab8f81e	307	}
	308	XSRETURN(1);
	309	}
	310
67e989fb	311	MODULE = Encode PACKAGE = Encode
2c674647	312
	313	PROTOTYPES: ENABLE
	314
67e989fb	315	I32
2c674647	316	_bytes_to_utf8(sv, ...)
85982a32	317	SV * sv
	318	CODE:
	319	{
	320	SV * encoding = items == 2 ? ST(1) : Nullsv;
c6a7db43	321
85982a32	322	if (encoding)
	323	RETVAL = _encoded_bytes_to_utf8(sv, SvPV_nolen(encoding));
	324	else {
	325	STRLEN len;
	326	U8* s = (U8*)SvPV(sv, len);
	327	U8* converted;
	328
	329	converted = bytes_to_utf8(s, &len); /* This allocs */
	330	sv_setpvn(sv, (char *)converted, len);
	331	SvUTF8_on(sv); /* XXX Should we? */
	332	Safefree(converted); /* ... so free it */
	333	RETVAL = len;
	334	}
	335	}
	336	OUTPUT:
	337	RETVAL
2c674647	338
67e989fb	339	I32
2c674647	340	_utf8_to_bytes(sv, ...)
85982a32	341	SV * sv
	342	CODE:
	343	{
	344	SV * to = items > 1 ? ST(1) : Nullsv;
	345	SV * check = items > 2 ? ST(2) : Nullsv;
	346
	347	if (to) {
	348	RETVAL = _encoded_utf8_to_bytes(sv, SvPV_nolen(to));
	349	} else {
	350	STRLEN len;
	351	U8 s = (U8)SvPV(sv, len);
	352
	353	RETVAL = 0;
	354	if (SvTRUE(check)) {
	355	/* Must do things the slow way */
	356	U8 *dest;
	357	/* We need a copy to pass to check() */
c6a7db43	358	U8 src = (U8)savepv((char *)s);
85982a32	359	U8 *send = s + len;
	360
	361	New(83, dest, len, U8); /* I think */
	362
	363	while (s < send) {
	364	if (*s < 0x80){
	365	dest++ = s++;
	366	} else {
	367	STRLEN ulen;
	368	UV uv = *s++;
	369
	370	/* Have to do it all ourselves because of error routine,
	371	aargh. */
	372	if (!(uv & 0x40)){ goto failure; }
	373	if (!(uv & 0x20)) { ulen = 2; uv &= 0x1f; }
	374	else if (!(uv & 0x10)) { ulen = 3; uv &= 0x0f; }
	375	else if (!(uv & 0x08)) { ulen = 4; uv &= 0x07; }
	376	else if (!(uv & 0x04)) { ulen = 5; uv &= 0x03; }
	377	else if (!(uv & 0x02)) { ulen = 6; uv &= 0x01; }
	378	else if (!(uv & 0x01)) { ulen = 7; uv = 0; }
	379	else { ulen = 13; uv = 0; }
87714904	380
85982a32	381	/* Note change to utf8.c variable naming, for variety */
85982a32	382	while (ulen--) {
c6a7db43	383	if ((*s & 0xc0) != 0x80){
c6a7db43	384	goto failure;
85982a32	385	} else {
	386	uv = (uv << 6) \| (*s++ & 0x3f);
	387	}
87714904	388	}
67e989fb	389	if (uv > 256) {
67e989fb	390	failure:
85982a32	391	call_failure(check, s, dest, src);
85982a32	392	/* Now what happens? */
67e989fb	393	}
67e989fb	394	*dest++ = (U8)uv;
85982a32	395	}
	396	}
	397	} else {
	398	RETVAL = (utf8_to_bytes(s, &len) ? len : 0);
2c674647	399	}
85982a32	400	}
	401	}
	402	OUTPUT:
	403	RETVAL
2c674647	404
2c674647	405	bool
b2704119	406	is_utf8(sv, check = 0)
4411f3b6	407	SV * sv
b2704119	408	int check
85982a32	409	CODE:
	410	{
	411	if (SvGMAGICAL(sv)) /* it could be $1, for example */
	412	sv = newSVsv(sv); /* GMAGIG will be done */
	413	if (SvPOK(sv)) {
	414	RETVAL = SvUTF8(sv) ? TRUE : FALSE;
	415	if (RETVAL &&
	416	check &&
	417	!is_utf8_string((U8*)SvPVX(sv), SvCUR(sv)))
2c674647	418	RETVAL = FALSE;
85982a32	419	} else {
	420	RETVAL = FALSE;
	421	}
	422	if (sv != ST(0))
	423	SvREFCNT_dec(sv); /* it was a temp copy */
	424	}
	425	OUTPUT:
	426	RETVAL
2c674647	427
2c674647	428	SV *
4411f3b6	429	_utf8_on(sv)
85982a32	430	SV * sv
	431	CODE:
	432	{
	433	if (SvPOK(sv)) {
	434	SV *rsv = newSViv(SvUTF8(sv));
	435	RETVAL = rsv;
	436	SvUTF8_on(sv);
	437	} else {
	438	RETVAL = &PL_sv_undef;
	439	}
	440	}
	441	OUTPUT:
	442	RETVAL
2c674647	443
2c674647	444	SV *
4411f3b6	445	_utf8_off(sv)
85982a32	446	SV * sv
	447	CODE:
	448	{
	449	if (SvPOK(sv)) {
	450	SV *rsv = newSViv(SvUTF8(sv));
	451	RETVAL = rsv;
	452	SvUTF8_off(sv);
	453	} else {
	454	RETVAL = &PL_sv_undef;
	455	}
	456	}
	457	OUTPUT:
	458	RETVAL
	459
85982a32	460	int
	461	DIE_ON_ERR()
	462	CODE:
	463	RETVAL = ENCODE_DIE_ON_ERR;
	464	OUTPUT:
	465	RETVAL
	466
c6a7db43	467	int
85982a32	468	WARN_ON_ERR()
	469	CODE:
	470	RETVAL = ENCODE_WARN_ON_ERR;
	471	OUTPUT:
	472	RETVAL
	473
	474	int
	475	LEAVE_SRC()
	476	CODE:
	477	RETVAL = ENCODE_LEAVE_SRC;
	478	OUTPUT:
	479	RETVAL
	480
	481	int
	482	RETURN_ON_ERR()
	483	CODE:
	484	RETVAL = ENCODE_RETURN_ON_ERR;
	485	OUTPUT:
	486	RETVAL
	487
	488	int
	489	PERLQQ()
	490	CODE:
	491	RETVAL = ENCODE_PERLQQ;
	492	OUTPUT:
	493	RETVAL
	494
	495	int
af1f55d9	496	HTMLCREF()
	497	CODE:
	498	RETVAL = ENCODE_HTMLCREF;
	499	OUTPUT:
	500	RETVAL
	501
	502	int
	503	XMLCREF()
	504	CODE:
	505	RETVAL = ENCODE_XMLCREF;
	506	OUTPUT:
	507	RETVAL
	508
	509	int
85982a32	510	FB_DEFAULT()
	511	CODE:
	512	RETVAL = ENCODE_FB_DEFAULT;
	513	OUTPUT:
	514	RETVAL
	515
	516	int
	517	FB_CROAK()
	518	CODE:
	519	RETVAL = ENCODE_FB_CROAK;
	520	OUTPUT:
	521	RETVAL
	522
	523	int
	524	FB_QUIET()
	525	CODE:
	526	RETVAL = ENCODE_FB_QUIET;
	527	OUTPUT:
	528	RETVAL
	529
	530	int
	531	FB_WARN()
	532	CODE:
	533	RETVAL = ENCODE_FB_WARN;
	534	OUTPUT:
	535	RETVAL
	536
	537	int
	538	FB_PERLQQ()
	539	CODE:
	540	RETVAL = ENCODE_FB_PERLQQ;
	541	OUTPUT:
	542	RETVAL
2c674647	543
af1f55d9	544	int
	545	FB_HTMLCREF()
	546	CODE:
	547	RETVAL = ENCODE_FB_HTMLCREF;
	548	OUTPUT:
	549	RETVAL
	550
	551	int
	552	FB_XMLCREF()
	553	CODE:
	554	RETVAL = ENCODE_FB_XMLCREF;
	555	OUTPUT:
	556	RETVAL
	557
33af2bc7	558	BOOT:
33af2bc7	559	{
85982a32	560	#include "def_t.h"
e7cbefb8	561	#include "def_t.exh"
33af2bc7	562	}