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

/*
 $Id: Encode.xs,v 1.38 2002/04/24 20:11:14 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_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_ "\"\\N{U+%" UVxf "}\" does not map to %s, %d", 
			ch, enc->name[0], __LINE__);
		}else{
		    if (check & ENCODE_RETURN_ON_ERR){
			if (check & ENCODE_WARN_ON_ERR){
			    Perl_warner(
				aTHX_ packWARN(WARN_UTF8),
				"\"\\N{U+%" UVxf "}\" does not map to %s", 
				ch,enc->name[0]);
			}
       			goto ENCODE_SET_SRC;
		    }else if (check & ENCODE_PERLQQ){
			SV* perlqq = 
			    sv_2mortal(newSVpvf("\\x{%04"UVxf"}", ch));
			sdone += slen + clen;
			ddone += dlen + SvCUR(perlqq);
			sv_catsv(dst, perlqq);
		    }else if (check & ENCODE_HTMLCREF){
			SV* htmlcref = 
			    sv_2mortal(newSVpvf("&#%d;", ch));
			sdone += slen + clen;
			ddone += dlen + SvCUR(htmlcref);
			sv_catsv(dst, htmlcref);
		    }else if (check & ENCODE_XMLCREF){
			SV* xmlcref = 
			    sv_2mortal(newSVpvf("&#x%" UVxf ";", 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%02X\" does not map to Unicode (%d)",
			enc->name[0], (U8) s[slen], code);
		}else{
		    if (check & ENCODE_RETURN_ON_ERR){
			if (check & ENCODE_WARN_ON_ERR){
			    Perl_warner(
				aTHX_ packWARN(WARN_UTF8),
				"%s \"\\x%02X\" does not map to Unicode (%d)",
				enc->name[0], (U8) s[slen], code);
			}
			goto ENCODE_SET_SRC;
		    }else if (check & 
			      (ENCODE_PERLQQ|ENCODE_HTMLCREF|ENCODE_XMLCREF)){
			SV* perlqq = 
			    sv_2mortal(newSVpvf("\\x%02X", 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); */
    if (code && !(check & ENCODE_RETURN_ON_ERR)) {
    	return &PL_sv_undef;
    }
    
    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);
    if (hv_exists(get_hv("INC", 0), 
		  PERLIO_FILENAME, strlen(PERLIO_FILENAME)))
    {
	ST(0) = &PL_sv_yes;
    }else{
	ST(0) = &PL_sv_no;
    }
    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	/*
af1f55d9	2	$Id: Encode.xs,v 1.38 2002/04/24 20:11:14 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"
0ab8f81e	11	# define PERLIO_FILENAME "PerlIO/encoding.pm"
aae85ceb	12
85982a32	13	/* set 1 or more to profile. t/encoding.t dumps core because of
85982a32	14	Perl_warner and PerlIO don't work well */
0ab8f81e	15	#define ENCODE_XS_PROFILE 0
39cf9a5e	16
85982a32	17	/* set 0 to disable floating point to calculate buffer size for
85982a32	18	encode_method(). 1 is recommended. 2 restores NI-S original */
0ab8f81e	19	#define ENCODE_XS_USEFP 1
39cf9a5e	20
fcf2db38	21	#define UNIMPLEMENTED(x,y) y x (SV sv, char encoding) {dTHX; \
2f5768b8	22	Perl_croak(aTHX_ "panic_unimplemented"); \
4a83738a	23	return (y)0; /* fool picky compilers */ \
87714904	24	}
85982a32	25	/**/
011b2d2f	26
7e9a885a	27	UNIMPLEMENTED(_encoded_utf8_to_bytes, I32)
7e9a885a	28	UNIMPLEMENTED(_encoded_bytes_to_utf8, I32)
33af2bc7	29
b0b300a3	30	void
aa0053b7	31	Encode_XSEncoding(pTHX_ encode_t * enc)
2f2b4ff2	32	{
aa0053b7	33	dSP;
	34	HV *stash = gv_stashpv("Encode::XS", TRUE);
	35	SV *sv = sv_bless(newRV_noinc(newSViv(PTR2IV(enc))), stash);
	36	int i = 0;
	37	PUSHMARK(sp);
	38	XPUSHs(sv);
	39	while (enc->name[i]) {
	40	const char *name = enc->name[i++];
	41	XPUSHs(sv_2mortal(newSVpvn(name, strlen(name))));
	42	}
	43	PUTBACK;
	44	call_pv("Encode::define_encoding", G_DISCARD);
	45	SvREFCNT_dec(sv);
2f2b4ff2	46	}
2f2b4ff2	47
aa0053b7	48	void
	49	call_failure(SV * routine, U8 * done, U8 * dest, U8 * orig)
	50	{
85982a32	51	/* Exists for breakpointing */
aa0053b7	52	}
67e989fb	53
85982a32	54
2f2b4ff2	55	static SV *
aa0053b7	56	encode_method(pTHX_ encode_t * enc, encpage_t * dir, SV * src,
85982a32	57	int check)
2f2b4ff2	58	{
aa0053b7	59	STRLEN slen;
aa0053b7	60	U8 s = (U8 ) SvPV(src, slen);
3aececda	61	STRLEN tlen = slen;
	62	STRLEN ddone = 0;
	63	STRLEN sdone = 0;
39cf9a5e	64
3c49ab08	65	/* We allocate slen+1.
85982a32	66	PerlIO dumps core if this value is smaller than this. */
3c49ab08	67	SV *dst = sv_2mortal(newSV(slen+1));
85982a32	68	U8 d = (U8 )SvPVX(dst);
	69	STRLEN dlen = SvLEN(dst)-1;
	70	int code;
	71
	72	if (!slen){
	73	SvCUR_set(dst, 0);
	74	SvPOK_only(dst);
	75	goto ENCODE_END;
	76	}
	77
	78	while (code = do_encode(dir, s, &slen, d, dlen, &dlen, !check))
	79	{
	80	SvCUR_set(dst, dlen+ddone);
	81	SvPOK_only(dst);
0b3236bb	82
85982a32	83	if (code == ENCODE_FALLBACK \|\| code == ENCODE_PARTIAL){
	84	break;
	85	}
	86	switch (code) {
	87	case ENCODE_NOSPACE:
	88	{
	89	STRLEN more = 0; /* make sure you initialize! */
	90	STRLEN sleft;
	91	sdone += slen;
	92	ddone += dlen;
	93	sleft = tlen - sdone;
fcb875d4	94	#if ENCODE_XS_PROFILE >= 2
85982a32	95	Perl_warn(aTHX_
	96	"more=%d, sdone=%d, sleft=%d, SvLEN(dst)=%d\n",
	97	more, sdone, sleft, SvLEN(dst));
fcb875d4	98	#endif
85982a32	99	if (sdone != 0) { /* has src ever been processed ? */
39cf9a5e	100	#if ENCODE_XS_USEFP == 2
85982a32	101	more = (1.0tlenSvLEN(dst)+sdone-1)/sdone
85982a32	102	- SvLEN(dst);
39cf9a5e	103	#elif ENCODE_XS_USEFP
85982a32	104	more = (1.0SvLEN(dst)+1)/sdone sleft;
39cf9a5e	105	#else
85982a32	106	/* safe until SvLEN(dst) == MAX_INT/16 */
85982a32	107	more = (16SvLEN(dst)+1)/sdone/16 sleft;
39cf9a5e	108	#endif
39cf9a5e	109	}
85982a32	110	more += UTF8_MAXLEN; /* insurance policy */
	111	d = (U8 *) SvGROW(dst, SvLEN(dst) + more);
	112	/* dst need to grow need MORE bytes! */
	113	if (ddone >= SvLEN(dst)) {
	114	Perl_croak(aTHX_ "Destination couldn't be grown.");
	115	}
	116	dlen = SvLEN(dst)-ddone-1;
	117	d += ddone;
	118	s += slen;
	119	slen = tlen-sdone;
	120	continue;
	121	}
	122	case ENCODE_NOREP:
	123	/* encoding */
0ab8f81e	124	if (dir == enc->f_utf8) {
85982a32	125	STRLEN clen;
85982a32	126	UV ch =
0ab8f81e	127	utf8n_to_uvuni(s+slen, (SvCUR(src)-slen),
b0b300a3	128	&clen, UTF8_ALLOW_ANY\|UTF8_CHECK_ONLY);
85982a32	129	if (check & ENCODE_DIE_ON_ERR) {
85982a32	130	Perl_croak(
0ab8f81e	131	aTHX_ "\"\\N{U+%" UVxf "}\" does not map to %s, %d",
85982a32	132	ch, enc->name[0], __LINE__);
	133	}else{
	134	if (check & ENCODE_RETURN_ON_ERR){
	135	if (check & ENCODE_WARN_ON_ERR){
	136	Perl_warner(
	137	aTHX_ packWARN(WARN_UTF8),
0ab8f81e	138	"\"\\N{U+%" UVxf "}\" does not map to %s",
85982a32	139	ch,enc->name[0]);
	140	}
	141	goto ENCODE_SET_SRC;
	142	}else if (check & ENCODE_PERLQQ){
0ab8f81e	143	SV* perlqq =
e4da7dce	144	sv_2mortal(newSVpvf("\\x{%04"UVxf"}", ch));
b2704119	145	sdone += slen + clen;
85982a32	146	ddone += dlen + SvCUR(perlqq);
85982a32	147	sv_catsv(dst, perlqq);
af1f55d9	148	}else if (check & ENCODE_HTMLCREF){
	149	SV* htmlcref =
	150	sv_2mortal(newSVpvf("&#%d;", ch));
	151	sdone += slen + clen;
	152	ddone += dlen + SvCUR(htmlcref);
	153	sv_catsv(dst, htmlcref);
	154	}else if (check & ENCODE_XMLCREF){
	155	SV* xmlcref =
	156	sv_2mortal(newSVpvf("&#x%" UVxf ";", ch));
	157	sdone += slen + clen;
	158	ddone += dlen + SvCUR(xmlcref);
	159	sv_catsv(dst, xmlcref);
0ab8f81e	160	} else {
85982a32	161	/* fallback char */
85982a32	162	sdone += slen + clen;
0ab8f81e	163	ddone += dlen + enc->replen;
0ab8f81e	164	sv_catpvn(dst, (char*)enc->rep, enc->replen);
b2704119	165	}
0ab8f81e	166	}
b2704119	167	}
85982a32	168	/* decoding */
0ab8f81e	169	else {
85982a32	170	if (check & ENCODE_DIE_ON_ERR){
	171	Perl_croak(
	172	aTHX_ "%s \"\\x%02X\" does not map to Unicode (%d)",
	173	enc->name[0], (U8) s[slen], code);
	174	}else{
	175	if (check & ENCODE_RETURN_ON_ERR){
	176	if (check & ENCODE_WARN_ON_ERR){
	177	Perl_warner(
	178	aTHX_ packWARN(WARN_UTF8),
	179	"%s \"\\x%02X\" does not map to Unicode (%d)",
	180	enc->name[0], (U8) s[slen], code);
	181	}
	182	goto ENCODE_SET_SRC;
af1f55d9	183	}else if (check &
af1f55d9	184	(ENCODE_PERLQQ\|ENCODE_HTMLCREF\|ENCODE_XMLCREF)){
0ab8f81e	185	SV* perlqq =
b2704119	186	sv_2mortal(newSVpvf("\\x%02X", s[slen]));
85982a32	187	sdone += slen + 1;
	188	ddone += dlen + SvCUR(perlqq);
	189	sv_catsv(dst, perlqq);
	190	} else {
	191	sdone += slen + 1;
0ab8f81e	192	ddone += dlen + strlen(FBCHAR_UTF8);
0ab8f81e	193	sv_catpv(dst, FBCHAR_UTF8);
85982a32	194	}
aa0053b7	195	}
b2704119	196	}
85982a32	197	/* settle variables when fallback */
b0b300a3	198	d = (U8 *)SvEND(dst);
0ab8f81e	199	dlen = SvLEN(dst) - ddone - 1;
0ab8f81e	200	s = (U8*)SvPVX(src) + sdone;
b2704119	201	slen = tlen - sdone;
b2704119	202	break;
2f2b4ff2	203
85982a32	204	default:
	205	Perl_croak(aTHX_ "Unexpected code %d converting %s %s",
	206	code, (dir == enc->f_utf8) ? "to" : "from",
	207	enc->name[0]);
	208	return &PL_sv_undef;
aa0053b7	209	}
85982a32	210	}
85982a32	211	ENCODE_SET_SRC:
6d1c0808	212	if (check && !(check & ENCODE_LEAVE_SRC)){
6d1c0808	213	sdone = SvCUR(src) - (slen+sdone);
85982a32	214	if (sdone) {
85982a32	215	sv_setpvn(src, (char*)s+slen, sdone);
aa0053b7	216	}
85982a32	217	SvCUR_set(src, sdone);
2f2b4ff2	218	}
85982a32	219	/* warn("check = 0x%X, code = 0x%d\n", check, code); */
	220	if (code && !(check & ENCODE_RETURN_ON_ERR)) {
	221	return &PL_sv_undef;
2f2b4ff2	222	}
0ab8f81e	223
85982a32	224	SvCUR_set(dst, dlen+ddone);
85982a32	225	SvPOK_only(dst);
0ab8f81e	226
39cf9a5e	227	#if ENCODE_XS_PROFILE
39cf9a5e	228	if (SvCUR(dst) > SvCUR(src)){
85982a32	229	Perl_warn(aTHX_
	230	"SvLEN(dst)=%d, SvCUR(dst)=%d. %d bytes unused(%f %%)\n",
	231	SvLEN(dst), SvCUR(dst), SvLEN(dst) - SvCUR(dst),
	232	(SvLEN(dst) - SvCUR(dst))1.0/SvLEN(dst)100.0);
39cf9a5e	233	}
3c49ab08	234	#endif
0ab8f81e	235
85982a32	236	ENCODE_END:
0b3236bb	237	*SvEND(dst) = '\0';
aa0053b7	238	return dst;
2f2b4ff2	239	}
2f2b4ff2	240
50d26985	241	MODULE = Encode PACKAGE = Encode::XS PREFIX = Method_
2f2b4ff2	242
	243	PROTOTYPES: ENABLE
	244
	245	void
0a95303c	246	Method_name(obj)
	247	SV * obj
	248	CODE:
85982a32	249	{
	250	encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj)));
	251	ST(0) = sv_2mortal(newSVpvn(enc->name[0],strlen(enc->name[0])));
	252	XSRETURN(1);
	253	}
0a95303c	254
0a95303c	255	void
b2704119	256	Method_decode(obj,src,check = 0)
2f2b4ff2	257	SV * obj
2f2b4ff2	258	SV * src
b2704119	259	int check
2f2b4ff2	260	CODE:
aae85ceb	261	{
85982a32	262	encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj)));
	263	ST(0) = encode_method(aTHX_ enc, enc->t_utf8, src, check);
	264	SvUTF8_on(ST(0));
aae85ceb	265	XSRETURN(1);
	266	}
	267
	268	void
85982a32	269	Method_encode(obj,src,check = 0)
aae85ceb	270	SV * obj
85982a32	271	SV * src
85982a32	272	int check
aae85ceb	273	CODE:
aae85ceb	274	{
85982a32	275	encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj)));
	276	sv_utf8_upgrade(src);
	277	ST(0) = encode_method(aTHX_ enc, enc->f_utf8, src, check);
aae85ceb	278	XSRETURN(1);
	279	}
	280
0ab8f81e	281	void
	282	Method_needs_lines(obj)
	283	SV * obj
	284	CODE:
	285	{
	286	encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj)));
	287	ST(0) = &PL_sv_no;
	288	XSRETURN(1);
	289	}
	290
	291	void
	292	Method_perlio_ok(obj)
	293	SV * obj
	294	CODE:
	295	{
	296	encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj)));
011b2d2f	297	require_pv(PERLIO_FILENAME);
0ab8f81e	298	if (hv_exists(get_hv("INC", 0),
	299	PERLIO_FILENAME, strlen(PERLIO_FILENAME)))
	300	{
	301	ST(0) = &PL_sv_yes;
	302	}else{
	303	ST(0) = &PL_sv_no;
	304	}
	305	XSRETURN(1);
	306	}
	307
67e989fb	308	MODULE = Encode PACKAGE = Encode
2c674647	309
	310	PROTOTYPES: ENABLE
	311
67e989fb	312	I32
2c674647	313	_bytes_to_utf8(sv, ...)
85982a32	314	SV * sv
	315	CODE:
	316	{
	317	SV * encoding = items == 2 ? ST(1) : Nullsv;
0ab8f81e	318
85982a32	319	if (encoding)
	320	RETVAL = _encoded_bytes_to_utf8(sv, SvPV_nolen(encoding));
	321	else {
	322	STRLEN len;
	323	U8* s = (U8*)SvPV(sv, len);
	324	U8* converted;
	325
	326	converted = bytes_to_utf8(s, &len); /* This allocs */
	327	sv_setpvn(sv, (char *)converted, len);
	328	SvUTF8_on(sv); /* XXX Should we? */
	329	Safefree(converted); /* ... so free it */
	330	RETVAL = len;
	331	}
	332	}
	333	OUTPUT:
	334	RETVAL
2c674647	335
67e989fb	336	I32
2c674647	337	_utf8_to_bytes(sv, ...)
85982a32	338	SV * sv
	339	CODE:
	340	{
	341	SV * to = items > 1 ? ST(1) : Nullsv;
	342	SV * check = items > 2 ? ST(2) : Nullsv;
	343
	344	if (to) {
	345	RETVAL = _encoded_utf8_to_bytes(sv, SvPV_nolen(to));
	346	} else {
	347	STRLEN len;
	348	U8 s = (U8)SvPV(sv, len);
	349
	350	RETVAL = 0;
	351	if (SvTRUE(check)) {
	352	/* Must do things the slow way */
	353	U8 *dest;
	354	/* We need a copy to pass to check() */
0ab8f81e	355	U8 src = (U8)savepv((char *)s);
85982a32	356	U8 *send = s + len;
	357
	358	New(83, dest, len, U8); /* I think */
	359
	360	while (s < send) {
	361	if (*s < 0x80){
	362	dest++ = s++;
	363	} else {
	364	STRLEN ulen;
	365	UV uv = *s++;
	366
	367	/* Have to do it all ourselves because of error routine,
	368	aargh. */
	369	if (!(uv & 0x40)){ goto failure; }
	370	if (!(uv & 0x20)) { ulen = 2; uv &= 0x1f; }
	371	else if (!(uv & 0x10)) { ulen = 3; uv &= 0x0f; }
	372	else if (!(uv & 0x08)) { ulen = 4; uv &= 0x07; }
	373	else if (!(uv & 0x04)) { ulen = 5; uv &= 0x03; }
	374	else if (!(uv & 0x02)) { ulen = 6; uv &= 0x01; }
	375	else if (!(uv & 0x01)) { ulen = 7; uv = 0; }
	376	else { ulen = 13; uv = 0; }
87714904	377
85982a32	378	/* Note change to utf8.c variable naming, for variety */
85982a32	379	while (ulen--) {
0ab8f81e	380	if ((*s & 0xc0) != 0x80){
0ab8f81e	381	goto failure;
85982a32	382	} else {
	383	uv = (uv << 6) \| (*s++ & 0x3f);
	384	}
87714904	385	}
67e989fb	386	if (uv > 256) {
67e989fb	387	failure:
85982a32	388	call_failure(check, s, dest, src);
85982a32	389	/* Now what happens? */
67e989fb	390	}
67e989fb	391	*dest++ = (U8)uv;
85982a32	392	}
	393	}
	394	} else {
	395	RETVAL = (utf8_to_bytes(s, &len) ? len : 0);
2c674647	396	}
85982a32	397	}
	398	}
	399	OUTPUT:
	400	RETVAL
2c674647	401
2c674647	402	bool
b2704119	403	is_utf8(sv, check = 0)
4411f3b6	404	SV * sv
b2704119	405	int check
85982a32	406	CODE:
	407	{
	408	if (SvGMAGICAL(sv)) /* it could be $1, for example */
	409	sv = newSVsv(sv); /* GMAGIG will be done */
	410	if (SvPOK(sv)) {
	411	RETVAL = SvUTF8(sv) ? TRUE : FALSE;
	412	if (RETVAL &&
	413	check &&
	414	!is_utf8_string((U8*)SvPVX(sv), SvCUR(sv)))
2c674647	415	RETVAL = FALSE;
85982a32	416	} else {
	417	RETVAL = FALSE;
	418	}
	419	if (sv != ST(0))
	420	SvREFCNT_dec(sv); /* it was a temp copy */
	421	}
	422	OUTPUT:
	423	RETVAL
2c674647	424
2c674647	425	SV *
4411f3b6	426	_utf8_on(sv)
85982a32	427	SV * sv
	428	CODE:
	429	{
	430	if (SvPOK(sv)) {
	431	SV *rsv = newSViv(SvUTF8(sv));
	432	RETVAL = rsv;
	433	SvUTF8_on(sv);
	434	} else {
	435	RETVAL = &PL_sv_undef;
	436	}
	437	}
	438	OUTPUT:
	439	RETVAL
2c674647	440
2c674647	441	SV *
4411f3b6	442	_utf8_off(sv)
85982a32	443	SV * sv
	444	CODE:
	445	{
	446	if (SvPOK(sv)) {
	447	SV *rsv = newSViv(SvUTF8(sv));
	448	RETVAL = rsv;
	449	SvUTF8_off(sv);
	450	} else {
	451	RETVAL = &PL_sv_undef;
	452	}
	453	}
	454	OUTPUT:
	455	RETVAL
	456
85982a32	457	int
	458	DIE_ON_ERR()
	459	CODE:
	460	RETVAL = ENCODE_DIE_ON_ERR;
	461	OUTPUT:
	462	RETVAL
	463
0ab8f81e	464	int
85982a32	465	WARN_ON_ERR()
	466	CODE:
	467	RETVAL = ENCODE_WARN_ON_ERR;
	468	OUTPUT:
	469	RETVAL
	470
	471	int
	472	LEAVE_SRC()
	473	CODE:
	474	RETVAL = ENCODE_LEAVE_SRC;
	475	OUTPUT:
	476	RETVAL
	477
	478	int
	479	RETURN_ON_ERR()
	480	CODE:
	481	RETVAL = ENCODE_RETURN_ON_ERR;
	482	OUTPUT:
	483	RETVAL
	484
	485	int
	486	PERLQQ()
	487	CODE:
	488	RETVAL = ENCODE_PERLQQ;
	489	OUTPUT:
	490	RETVAL
	491
	492	int
af1f55d9	493	HTMLCREF()
	494	CODE:
	495	RETVAL = ENCODE_HTMLCREF;
	496	OUTPUT:
	497	RETVAL
	498
	499	int
	500	XMLCREF()
	501	CODE:
	502	RETVAL = ENCODE_XMLCREF;
	503	OUTPUT:
	504	RETVAL
	505
	506	int
85982a32	507	FB_DEFAULT()
	508	CODE:
	509	RETVAL = ENCODE_FB_DEFAULT;
	510	OUTPUT:
	511	RETVAL
	512
	513	int
	514	FB_CROAK()
	515	CODE:
	516	RETVAL = ENCODE_FB_CROAK;
	517	OUTPUT:
	518	RETVAL
	519
	520	int
	521	FB_QUIET()
	522	CODE:
	523	RETVAL = ENCODE_FB_QUIET;
	524	OUTPUT:
	525	RETVAL
	526
	527	int
	528	FB_WARN()
	529	CODE:
	530	RETVAL = ENCODE_FB_WARN;
	531	OUTPUT:
	532	RETVAL
	533
	534	int
	535	FB_PERLQQ()
	536	CODE:
	537	RETVAL = ENCODE_FB_PERLQQ;
	538	OUTPUT:
	539	RETVAL
2c674647	540
af1f55d9	541	int
	542	FB_HTMLCREF()
	543	CODE:
	544	RETVAL = ENCODE_FB_HTMLCREF;
	545	OUTPUT:
	546	RETVAL
	547
	548	int
	549	FB_XMLCREF()
	550	CODE:
	551	RETVAL = ENCODE_FB_XMLCREF;
	552	OUTPUT:
	553	RETVAL
	554
33af2bc7	555	BOOT:
33af2bc7	556	{
85982a32	557	#include "def_t.h"
e7cbefb8	558	#include "def_t.exh"
33af2bc7	559	}