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

/*
 $Id: Encode.xs,v 1.30 2002/04/20 09:58:23 dankogai Exp dankogai $
 */

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

/* 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{%04x}", ch));
			sdone += slen + clen;
			ddone += dlen + SvCUR(perlqq);
			sv_catsv(dst, perlqq);
		    } 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){
			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 & ~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);
}

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

PROTOTYPES: DISABLE


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
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

BOOT:
{
#include "def_t.h"
#include "def_t.exh"
}
Commit	Line	Data
85982a32	1	/*
b0b300a3	2	$Id: Encode.xs,v 1.30 2002/04/20 09:58:23 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"
aae85ceb	11
85982a32	12	/* set 1 or more to profile. t/encoding.t dumps core because of
85982a32	13	Perl_warner and PerlIO don't work well */
b0b300a3	14	#define ENCODE_XS_PROFILE 0
39cf9a5e	15
85982a32	16	/* set 0 to disable floating point to calculate buffer size for
85982a32	17	encode_method(). 1 is recommended. 2 restores NI-S original */
b0b300a3	18	#define ENCODE_XS_USEFP 1
39cf9a5e	19
fcf2db38	20	#define UNIMPLEMENTED(x,y) y x (SV sv, char encoding) {dTHX; \
2f5768b8	21	Perl_croak(aTHX_ "panic_unimplemented"); \
4a83738a	22	return (y)0; /* fool picky compilers */ \
87714904	23	}
85982a32	24	/**/
b0b300a3	25	UNIMPLEMENTED(_encoded_utf8_to_bytes, I32);
b0b300a3	26	UNIMPLEMENTED(_encoded_bytes_to_utf8, I32);
33af2bc7	27
b0b300a3	28	void
aa0053b7	29	Encode_XSEncoding(pTHX_ encode_t * enc)
2f2b4ff2	30	{
aa0053b7	31	dSP;
	32	HV *stash = gv_stashpv("Encode::XS", TRUE);
	33	SV *sv = sv_bless(newRV_noinc(newSViv(PTR2IV(enc))), stash);
	34	int i = 0;
	35	PUSHMARK(sp);
	36	XPUSHs(sv);
	37	while (enc->name[i]) {
	38	const char *name = enc->name[i++];
	39	XPUSHs(sv_2mortal(newSVpvn(name, strlen(name))));
	40	}
	41	PUTBACK;
	42	call_pv("Encode::define_encoding", G_DISCARD);
	43	SvREFCNT_dec(sv);
2f2b4ff2	44	}
2f2b4ff2	45
aa0053b7	46	void
	47	call_failure(SV * routine, U8 * done, U8 * dest, U8 * orig)
	48	{
85982a32	49	/* Exists for breakpointing */
aa0053b7	50	}
67e989fb	51
85982a32	52
2f2b4ff2	53	static SV *
aa0053b7	54	encode_method(pTHX_ encode_t * enc, encpage_t * dir, SV * src,
85982a32	55	int check)
2f2b4ff2	56	{
aa0053b7	57	STRLEN slen;
aa0053b7	58	U8 s = (U8 ) SvPV(src, slen);
3aececda	59	STRLEN tlen = slen;
	60	STRLEN ddone = 0;
	61	STRLEN sdone = 0;
39cf9a5e	62
3c49ab08	63	/* We allocate slen+1.
85982a32	64	PerlIO dumps core if this value is smaller than this. */
3c49ab08	65	SV *dst = sv_2mortal(newSV(slen+1));
85982a32	66	U8 d = (U8 )SvPVX(dst);
	67	STRLEN dlen = SvLEN(dst)-1;
	68	int code;
	69
	70	if (!slen){
	71	SvCUR_set(dst, 0);
	72	SvPOK_only(dst);
	73	goto ENCODE_END;
	74	}
	75
	76	while (code = do_encode(dir, s, &slen, d, dlen, &dlen, !check))
	77	{
	78	SvCUR_set(dst, dlen+ddone);
	79	SvPOK_only(dst);
0b3236bb	80
85982a32	81	if (code == ENCODE_FALLBACK \|\| code == ENCODE_PARTIAL){
	82	break;
	83	}
	84	switch (code) {
	85	case ENCODE_NOSPACE:
	86	{
	87	STRLEN more = 0; /* make sure you initialize! */
	88	STRLEN sleft;
	89	sdone += slen;
	90	ddone += dlen;
	91	sleft = tlen - sdone;
fcb875d4	92	#if ENCODE_XS_PROFILE >= 2
85982a32	93	Perl_warn(aTHX_
	94	"more=%d, sdone=%d, sleft=%d, SvLEN(dst)=%d\n",
	95	more, sdone, sleft, SvLEN(dst));
fcb875d4	96	#endif
85982a32	97	if (sdone != 0) { /* has src ever been processed ? */
39cf9a5e	98	#if ENCODE_XS_USEFP == 2
85982a32	99	more = (1.0tlenSvLEN(dst)+sdone-1)/sdone
85982a32	100	- SvLEN(dst);
39cf9a5e	101	#elif ENCODE_XS_USEFP
85982a32	102	more = (1.0SvLEN(dst)+1)/sdone sleft;
39cf9a5e	103	#else
85982a32	104	/* safe until SvLEN(dst) == MAX_INT/16 */
85982a32	105	more = (16SvLEN(dst)+1)/sdone/16 sleft;
39cf9a5e	106	#endif
39cf9a5e	107	}
85982a32	108	more += UTF8_MAXLEN; /* insurance policy */
	109	d = (U8 *) SvGROW(dst, SvLEN(dst) + more);
	110	/* dst need to grow need MORE bytes! */
	111	if (ddone >= SvLEN(dst)) {
	112	Perl_croak(aTHX_ "Destination couldn't be grown.");
	113	}
	114	dlen = SvLEN(dst)-ddone-1;
	115	d += ddone;
	116	s += slen;
	117	slen = tlen-sdone;
	118	continue;
	119	}
	120	case ENCODE_NOREP:
	121	/* encoding */
b0b300a3	122	if (dir == enc->f_utf8) {
85982a32	123	STRLEN clen;
85982a32	124	UV ch =
b0b300a3	125	utf8n_to_uvuni(s+slen, (SvCUR(src)-slen),
b0b300a3	126	&clen, UTF8_ALLOW_ANY\|UTF8_CHECK_ONLY);
85982a32	127	if (check & ENCODE_DIE_ON_ERR) {
85982a32	128	Perl_croak(
b0b300a3	129	aTHX_ "\"\\N{U+%" UVxf "}\" does not map to %s, %d",
85982a32	130	ch, enc->name[0], __LINE__);
	131	}else{
	132	if (check & ENCODE_RETURN_ON_ERR){
	133	if (check & ENCODE_WARN_ON_ERR){
	134	Perl_warner(
	135	aTHX_ packWARN(WARN_UTF8),
b0b300a3	136	"\"\\N{U+%" UVxf "}\" does not map to %s",
85982a32	137	ch,enc->name[0]);
	138	}
	139	goto ENCODE_SET_SRC;
	140	}else if (check & ENCODE_PERLQQ){
b0b300a3	141	SV* perlqq =
85982a32	142	sv_2mortal(newSVpvf("\\x{%04x}", ch));
b2704119	143	sdone += slen + clen;
85982a32	144	ddone += dlen + SvCUR(perlqq);
85982a32	145	sv_catsv(dst, perlqq);
b0b300a3	146	} else {
85982a32	147	/* fallback char */
85982a32	148	sdone += slen + clen;
b0b300a3	149	ddone += dlen + enc->replen;
b0b300a3	150	sv_catpvn(dst, (char*)enc->rep, enc->replen);
b2704119	151	}
b0b300a3	152	}
b2704119	153	}
85982a32	154	/* decoding */
b0b300a3	155	else {
85982a32	156	if (check & ENCODE_DIE_ON_ERR){
	157	Perl_croak(
	158	aTHX_ "%s \"\\x%02X\" does not map to Unicode (%d)",
	159	enc->name[0], (U8) s[slen], code);
	160	}else{
	161	if (check & ENCODE_RETURN_ON_ERR){
	162	if (check & ENCODE_WARN_ON_ERR){
	163	Perl_warner(
	164	aTHX_ packWARN(WARN_UTF8),
	165	"%s \"\\x%02X\" does not map to Unicode (%d)",
	166	enc->name[0], (U8) s[slen], code);
	167	}
	168	goto ENCODE_SET_SRC;
	169	}else if (check & ENCODE_PERLQQ){
b0b300a3	170	SV* perlqq =
b2704119	171	sv_2mortal(newSVpvf("\\x%02X", s[slen]));
85982a32	172	sdone += slen + 1;
	173	ddone += dlen + SvCUR(perlqq);
	174	sv_catsv(dst, perlqq);
	175	} else {
	176	sdone += slen + 1;
b0b300a3	177	ddone += dlen + strlen(FBCHAR_UTF8);
b0b300a3	178	sv_catpv(dst, FBCHAR_UTF8);
85982a32	179	}
aa0053b7	180	}
b2704119	181	}
85982a32	182	/* settle variables when fallback */
b0b300a3	183	d = (U8 *)SvEND(dst);
	184	dlen = SvLEN(dst) - ddone - 1;
	185	s = (U8*)SvPVX(src) + sdone;
b2704119	186	slen = tlen - sdone;
b2704119	187	break;
2f2b4ff2	188
85982a32	189	default:
	190	Perl_croak(aTHX_ "Unexpected code %d converting %s %s",
	191	code, (dir == enc->f_utf8) ? "to" : "from",
	192	enc->name[0]);
	193	return &PL_sv_undef;
aa0053b7	194	}
85982a32	195	}
85982a32	196	ENCODE_SET_SRC:
b0b300a3	197	if (check & ~ENCODE_LEAVE_SRC){
85982a32	198	sdone = SvCUR(src) - (slen+sdone);
	199	if (sdone) {
	200	sv_setpvn(src, (char*)s+slen, sdone);
aa0053b7	201	}
85982a32	202	SvCUR_set(src, sdone);
2f2b4ff2	203	}
85982a32	204	/* warn("check = 0x%X, code = 0x%d\n", check, code); */
	205	if (code && !(check & ENCODE_RETURN_ON_ERR)) {
	206	return &PL_sv_undef;
2f2b4ff2	207	}
b0b300a3	208
85982a32	209	SvCUR_set(dst, dlen+ddone);
85982a32	210	SvPOK_only(dst);
b0b300a3	211
39cf9a5e	212	#if ENCODE_XS_PROFILE
39cf9a5e	213	if (SvCUR(dst) > SvCUR(src)){
85982a32	214	Perl_warn(aTHX_
	215	"SvLEN(dst)=%d, SvCUR(dst)=%d. %d bytes unused(%f %%)\n",
	216	SvLEN(dst), SvCUR(dst), SvLEN(dst) - SvCUR(dst),
	217	(SvLEN(dst) - SvCUR(dst))1.0/SvLEN(dst)100.0);
39cf9a5e	218	}
3c49ab08	219	#endif
b0b300a3	220
85982a32	221	ENCODE_END:
0b3236bb	222	*SvEND(dst) = '\0';
aa0053b7	223	return dst;
2f2b4ff2	224	}
2f2b4ff2	225
50d26985	226	MODULE = Encode PACKAGE = Encode::XS PREFIX = Method_
2f2b4ff2	227
	228	PROTOTYPES: ENABLE
	229
	230	void
0a95303c	231	Method_name(obj)
	232	SV * obj
	233	CODE:
85982a32	234	{
	235	encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj)));
	236	ST(0) = sv_2mortal(newSVpvn(enc->name[0],strlen(enc->name[0])));
	237	XSRETURN(1);
	238	}
0a95303c	239
0a95303c	240	void
b2704119	241	Method_decode(obj,src,check = 0)
2f2b4ff2	242	SV * obj
2f2b4ff2	243	SV * src
b2704119	244	int check
2f2b4ff2	245	CODE:
aae85ceb	246	{
85982a32	247	encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj)));
	248	ST(0) = encode_method(aTHX_ enc, enc->t_utf8, src, check);
	249	SvUTF8_on(ST(0));
aae85ceb	250	XSRETURN(1);
	251	}
	252
	253	void
85982a32	254	Method_encode(obj,src,check = 0)
aae85ceb	255	SV * obj
85982a32	256	SV * src
85982a32	257	int check
aae85ceb	258	CODE:
aae85ceb	259	{
85982a32	260	encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj)));
	261	sv_utf8_upgrade(src);
	262	ST(0) = encode_method(aTHX_ enc, enc->f_utf8, src, check);
aae85ceb	263	XSRETURN(1);
	264	}
	265
67e989fb	266	MODULE = Encode PACKAGE = Encode
2c674647	267
	268	PROTOTYPES: ENABLE
	269
67e989fb	270	I32
2c674647	271	_bytes_to_utf8(sv, ...)
85982a32	272	SV * sv
	273	CODE:
	274	{
	275	SV * encoding = items == 2 ? ST(1) : Nullsv;
b0b300a3	276
85982a32	277	if (encoding)
	278	RETVAL = _encoded_bytes_to_utf8(sv, SvPV_nolen(encoding));
	279	else {
	280	STRLEN len;
	281	U8* s = (U8*)SvPV(sv, len);
	282	U8* converted;
	283
	284	converted = bytes_to_utf8(s, &len); /* This allocs */
	285	sv_setpvn(sv, (char *)converted, len);
	286	SvUTF8_on(sv); /* XXX Should we? */
	287	Safefree(converted); /* ... so free it */
	288	RETVAL = len;
	289	}
	290	}
	291	OUTPUT:
	292	RETVAL
2c674647	293
67e989fb	294	I32
2c674647	295	_utf8_to_bytes(sv, ...)
85982a32	296	SV * sv
	297	CODE:
	298	{
	299	SV * to = items > 1 ? ST(1) : Nullsv;
	300	SV * check = items > 2 ? ST(2) : Nullsv;
	301
	302	if (to) {
	303	RETVAL = _encoded_utf8_to_bytes(sv, SvPV_nolen(to));
	304	} else {
	305	STRLEN len;
	306	U8 s = (U8)SvPV(sv, len);
	307
	308	RETVAL = 0;
	309	if (SvTRUE(check)) {
	310	/* Must do things the slow way */
	311	U8 *dest;
	312	/* We need a copy to pass to check() */
b0b300a3	313	U8 src = (U8)savepv((char *)s);
85982a32	314	U8 *send = s + len;
	315
	316	New(83, dest, len, U8); /* I think */
	317
	318	while (s < send) {
	319	if (*s < 0x80){
	320	dest++ = s++;
	321	} else {
	322	STRLEN ulen;
	323	UV uv = *s++;
	324
	325	/* Have to do it all ourselves because of error routine,
	326	aargh. */
	327	if (!(uv & 0x40)){ goto failure; }
	328	if (!(uv & 0x20)) { ulen = 2; uv &= 0x1f; }
	329	else if (!(uv & 0x10)) { ulen = 3; uv &= 0x0f; }
	330	else if (!(uv & 0x08)) { ulen = 4; uv &= 0x07; }
	331	else if (!(uv & 0x04)) { ulen = 5; uv &= 0x03; }
	332	else if (!(uv & 0x02)) { ulen = 6; uv &= 0x01; }
	333	else if (!(uv & 0x01)) { ulen = 7; uv = 0; }
	334	else { ulen = 13; uv = 0; }
87714904	335
85982a32	336	/* Note change to utf8.c variable naming, for variety */
85982a32	337	while (ulen--) {
b0b300a3	338	if ((*s & 0xc0) != 0x80){
b0b300a3	339	goto failure;
85982a32	340	} else {
	341	uv = (uv << 6) \| (*s++ & 0x3f);
	342	}
87714904	343	}
67e989fb	344	if (uv > 256) {
67e989fb	345	failure:
85982a32	346	call_failure(check, s, dest, src);
85982a32	347	/* Now what happens? */
67e989fb	348	}
67e989fb	349	*dest++ = (U8)uv;
85982a32	350	}
	351	}
	352	} else {
	353	RETVAL = (utf8_to_bytes(s, &len) ? len : 0);
2c674647	354	}
85982a32	355	}
	356	}
	357	OUTPUT:
	358	RETVAL
2c674647	359
2c674647	360	bool
b2704119	361	is_utf8(sv, check = 0)
4411f3b6	362	SV * sv
b2704119	363	int check
85982a32	364	CODE:
	365	{
	366	if (SvGMAGICAL(sv)) /* it could be $1, for example */
	367	sv = newSVsv(sv); /* GMAGIG will be done */
	368	if (SvPOK(sv)) {
	369	RETVAL = SvUTF8(sv) ? TRUE : FALSE;
	370	if (RETVAL &&
	371	check &&
	372	!is_utf8_string((U8*)SvPVX(sv), SvCUR(sv)))
2c674647	373	RETVAL = FALSE;
85982a32	374	} else {
	375	RETVAL = FALSE;
	376	}
	377	if (sv != ST(0))
	378	SvREFCNT_dec(sv); /* it was a temp copy */
	379	}
	380	OUTPUT:
	381	RETVAL
2c674647	382
2c674647	383	SV *
4411f3b6	384	_utf8_on(sv)
85982a32	385	SV * sv
	386	CODE:
	387	{
	388	if (SvPOK(sv)) {
	389	SV *rsv = newSViv(SvUTF8(sv));
	390	RETVAL = rsv;
	391	SvUTF8_on(sv);
	392	} else {
	393	RETVAL = &PL_sv_undef;
	394	}
	395	}
	396	OUTPUT:
	397	RETVAL
2c674647	398
2c674647	399	SV *
4411f3b6	400	_utf8_off(sv)
85982a32	401	SV * sv
	402	CODE:
	403	{
	404	if (SvPOK(sv)) {
	405	SV *rsv = newSViv(SvUTF8(sv));
	406	RETVAL = rsv;
	407	SvUTF8_off(sv);
	408	} else {
	409	RETVAL = &PL_sv_undef;
	410	}
	411	}
	412	OUTPUT:
	413	RETVAL
	414
	415	PROTOTYPES: DISABLE
	416
	417
	418	int
	419	DIE_ON_ERR()
	420	CODE:
	421	RETVAL = ENCODE_DIE_ON_ERR;
	422	OUTPUT:
	423	RETVAL
	424
b0b300a3	425	int
85982a32	426	WARN_ON_ERR()
	427	CODE:
	428	RETVAL = ENCODE_WARN_ON_ERR;
	429	OUTPUT:
	430	RETVAL
	431
	432	int
	433	LEAVE_SRC()
	434	CODE:
	435	RETVAL = ENCODE_LEAVE_SRC;
	436	OUTPUT:
	437	RETVAL
	438
	439	int
	440	RETURN_ON_ERR()
	441	CODE:
	442	RETVAL = ENCODE_RETURN_ON_ERR;
	443	OUTPUT:
	444	RETVAL
	445
	446	int
	447	PERLQQ()
	448	CODE:
	449	RETVAL = ENCODE_PERLQQ;
	450	OUTPUT:
	451	RETVAL
	452
	453	int
	454	FB_DEFAULT()
	455	CODE:
	456	RETVAL = ENCODE_FB_DEFAULT;
	457	OUTPUT:
	458	RETVAL
	459
	460	int
	461	FB_CROAK()
	462	CODE:
	463	RETVAL = ENCODE_FB_CROAK;
	464	OUTPUT:
	465	RETVAL
	466
	467	int
	468	FB_QUIET()
	469	CODE:
	470	RETVAL = ENCODE_FB_QUIET;
	471	OUTPUT:
	472	RETVAL
	473
	474	int
	475	FB_WARN()
	476	CODE:
	477	RETVAL = ENCODE_FB_WARN;
	478	OUTPUT:
	479	RETVAL
	480
	481	int
	482	FB_PERLQQ()
	483	CODE:
	484	RETVAL = ENCODE_FB_PERLQQ;
	485	OUTPUT:
	486	RETVAL
2c674647	487
33af2bc7	488	BOOT:
33af2bc7	489	{
85982a32	490	#include "def_t.h"
e7cbefb8	491	#include "def_t.exh"
33af2bc7	492	}