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

/*
 $Id: Encode.xs,v 2.2 2004/10/24 13:00:29 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 */
}


#define ERR_ENCODE_NOMAP "\"\\x{%04" UVxf "}\" does not map to %s"
#define ERR_DECODE_NOMAP "%s \"\\x%02" UVXf "\" does not map to Unicode"

static SV *
encode_method(pTHX_ encode_t * enc, encpage_t * dir, SV * src,
	      int check, STRLEN * offset, SV * term, int * retcode)
{
    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 = 0;
    STRLEN trmlen = 0;
    U8 *trm = term ? (U8*) SvPV(term, trmlen) : NULL;

    if (offset) {
      s += *offset;
      if (slen > *offset){ /* safeguard against slen overflow */
	  slen -= *offset;
      }else{
	  slen = 0;
      }
      tlen = slen;
    }

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

    while( (code = do_encode(dir, s, &slen, d, dlen, &dlen, !check,
			     trm, trmlen)) ) 
    {
	SvCUR_set(dst, dlen+ddone);
	SvPOK_only(dst);
	
	if (code == ENCODE_FALLBACK || code == ENCODE_PARTIAL ||
	    code == ENCODE_FOUND_TERM) {
	    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 = (STRLEN)((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_ ERR_ENCODE_NOMAP,
			       (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),
				ERR_ENCODE_NOMAP, (UV)ch, enc->name[0]);
		}
		if (check & ENCODE_RETURN_ON_ERR){
		    goto ENCODE_SET_SRC;
		}
		if (check & (ENCODE_PERLQQ|ENCODE_HTMLCREF|ENCODE_XMLCREF)){
		    SV* subchar = 
			newSVpvf(check & ENCODE_PERLQQ ? "\\x{%04"UVxf"}" :
				 check & ENCODE_HTMLCREF ? "&#%" UVuf ";" :
				 "&#x%" UVxf ";", (UV)ch);
		    sdone += slen + clen;
		    ddone += dlen + SvCUR(subchar);
		    sv_catsv(dst, subchar);
		    SvREFCNT_dec(subchar);
		} 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_ ERR_DECODE_NOMAP,
                              enc->name[0], (UV)s[slen]);
		    return &PL_sv_undef; /* never reaches but be safe */
		}
		if (check & ENCODE_WARN_ON_ERR){
		    Perl_warner(
			aTHX_ packWARN(WARN_UTF8),
			ERR_DECODE_NOMAP,
               	        enc->name[0], (UV)s[slen]);
		}
		if (check & ENCODE_RETURN_ON_ERR){
		    goto ENCODE_SET_SRC;
		}
		if (check &
		    (ENCODE_PERLQQ|ENCODE_HTMLCREF|ENCODE_XMLCREF)){
		    SV* subchar = newSVpvf("\\x%02" UVXf, (UV)s[slen]);
		    sdone += slen + 1;
		    ddone += dlen + SvCUR(subchar);
		    sv_catsv(dst, subchar);
		    SvREFCNT_dec(subchar);
		} 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

    if (offset) 
      *offset += sdone + slen;

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

MODULE = Encode		PACKAGE = Encode::utf8	PREFIX = Method_

PROTOTYPES: DISABLE

void
Method_decode_xs(obj,src,check = 0)
SV *	obj
SV *	src
int	check
CODE:
{
    STRLEN slen;
    U8 *s = (U8 *) SvPV(src, slen);
    U8 *e = (U8 *) SvEND(src);
    SV *dst = newSV(slen>0?slen:1); /* newSV() abhors 0 -- inaba */

    /* 
     * PerlO check -- we assume the object is of PerlIO if renewed 
     * and if so, we set RETURN_ON_ERR for partial character
     */
    int renewed = 0;
    dSP; ENTER; SAVETMPS;
    PUSHMARK(sp);
    XPUSHs(obj);
    PUTBACK;
    if (call_method("renewed",G_SCALAR) == 1) {
	SPAGAIN;
	renewed = POPi;
	PUTBACK; 
#if 0
	fprintf(stderr, "renewed == %d\n", renewed);
#endif
	if (renewed){ check |= ENCODE_RETURN_ON_ERR; }
    }
    FREETMPS; LEAVE;
    /* end PerlIO check */

    SvPOK_only(dst);
    SvCUR_set(dst,0);
    if (SvUTF8(src)) {
	s = utf8_to_bytes(s,&slen);
	if (s) {
	    SvCUR_set(src,slen);
	    SvUTF8_off(src);
	    e = s+slen;
	}
	else {
	    croak("Cannot decode string with wide characters");
	}
    }
    while (s < e) {
    	if (UTF8_IS_INVARIANT(*s) || UTF8_IS_START(*s)) {
	    U8 skip = UTF8SKIP(s);
	    if ((s + skip) > e) {
	    	/* Partial character - done */
	    	goto decode_utf8_fallback;
	    }
	    else if (is_utf8_char(s)) {
	    	/* Whole char is good */
		sv_catpvn(dst,(char *)s,skip);
		s += skip;
		continue;
	    }
	    else {
	    	/* starts ok but isn't "good" */
	    }
	}
	else {
	    /* Invalid start byte */
	}
	/* If we get here there is something wrong with alleged UTF-8 */
    decode_utf8_fallback:
	if (check & ENCODE_DIE_ON_ERR){
	    Perl_croak(aTHX_ ERR_DECODE_NOMAP, "utf8", (UV)*s);
	    XSRETURN(0);
	}
	if (check & ENCODE_WARN_ON_ERR){
	    Perl_warner(aTHX_ packWARN(WARN_UTF8),
			ERR_DECODE_NOMAP, "utf8", (UV)*s);
        }
    	if (check & ENCODE_RETURN_ON_ERR) {
		break;
    	}
        if (check & (ENCODE_PERLQQ|ENCODE_HTMLCREF|ENCODE_XMLCREF)){
	    SV* subchar = newSVpvf("\\x%02" UVXf, (UV)*s);
    	    sv_catsv(dst, subchar);
	    SvREFCNT_dec(subchar);
	} else {
	    sv_catpv(dst, FBCHAR_UTF8);
	}
	s++;
    }
    *SvEND(dst) = '\0';

    /* Clear out translated part of source unless asked not to */
    if (check && !(check & ENCODE_LEAVE_SRC)){
	slen = e-s;
	if (slen) {
	    sv_setpvn(src, (char*)s, slen);
	}
	SvCUR_set(src, slen);
    }
    SvUTF8_on(dst);
    ST(0) = sv_2mortal(dst);
    XSRETURN(1);
}

void
Method_encode_xs(obj,src,check = 0)
SV *	obj
SV *	src
int	check
CODE:
{
    STRLEN slen;
    U8 *s = (U8 *) SvPV(src, slen);
    U8 *e = (U8 *) SvEND(src);
    SV *dst = newSV(slen>0?slen:1); /* newSV() abhors 0 -- inaba */
    if (SvUTF8(src)) {
        /* Already encoded - trust it and just copy the octets */
    	sv_setpvn(dst,(char *)s,(e-s));
	s = e;
    }
    else {
    	/* Native bytes - can always encode */
	U8 *d = (U8 *) SvGROW(dst, 2*slen+1); /* +1 or assertion will botch */
    	while (s < e) {
    	    UV uv = NATIVE_TO_UNI((UV) *s++);
            if (UNI_IS_INVARIANT(uv))
            	*d++ = (U8)UTF_TO_NATIVE(uv);
            else {
    	        *d++ = (U8)UTF8_EIGHT_BIT_HI(uv);
                *d++ = (U8)UTF8_EIGHT_BIT_LO(uv);
            }
	}
        SvCUR_set(dst, d- (U8 *)SvPVX(dst));
    	*SvEND(dst) = '\0';
    }

    /* Clear out translated part of source unless asked not to */
    if (check && !(check & ENCODE_LEAVE_SRC)){
	slen = e-s;
	if (slen) {
	    sv_setpvn(src, (char*)s, slen);
	}
	SvCUR_set(src, slen);
    }
    SvPOK_only(dst);
    SvUTF8_off(dst);
    ST(0) = sv_2mortal(dst);
    XSRETURN(1);
}

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

PROTOTYPES: ENABLE

void
Method_renew(obj)
SV *	obj
CODE:
{
    XSRETURN(1);
}

int
Method_renewed(obj)
SV *    obj
CODE:
    RETVAL = 0;
OUTPUT:
    RETVAL

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_cat_decode(obj, dst, src, off, term, check = 0)
SV *	obj
SV *	dst
SV *	src
SV *	off
SV *	term
int	check
CODE:
{
    encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj)));
    STRLEN offset = (STRLEN)SvIV(off);
    int code = 0;
    if (SvUTF8(src)) {
    	sv_utf8_downgrade(src, FALSE);
    }
    sv_catsv(dst, encode_method(aTHX_ enc, enc->t_utf8, src, check,
				&offset, term, &code));
    SvIVX(off) = (IV)offset;
    if (code == ENCODE_FOUND_TERM) {
	ST(0) = &PL_sv_yes;
    }else{
	ST(0) = &PL_sv_no;
    }
    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)));
    if (SvUTF8(src)) {
    	sv_utf8_downgrade(src, FALSE);
    }
    ST(0) = encode_method(aTHX_ enc, enc->t_utf8, src, check,
			  NULL, Nullsv, NULL);
    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,
			  NULL, Nullsv, NULL);
    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	/*
cc836e95	2	$Id: Encode.xs,v 2.2 2004/10/24 13:00:29 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
2fc614e0	57	#define ERR_ENCODE_NOMAP "\"\\x{%04" UVxf "}\" does not map to %s"
	58	#define ERR_DECODE_NOMAP "%s \"\\x%02" UVXf "\" does not map to Unicode"
	59
2f2b4ff2	60	static SV *
aa0053b7	61	encode_method(pTHX_ encode_t * enc, encpage_t * dir, SV * src,
220e2d4e	62	int check, STRLEN * offset, SV * term, int * retcode)
2f2b4ff2	63	{
aa0053b7	64	STRLEN slen;
aa0053b7	65	U8 s = (U8 ) SvPV(src, slen);
3aececda	66	STRLEN tlen = slen;
	67	STRLEN ddone = 0;
	68	STRLEN sdone = 0;
39cf9a5e	69
3c49ab08	70	/* We allocate slen+1.
85982a32	71	PerlIO dumps core if this value is smaller than this. */
3c49ab08	72	SV *dst = sv_2mortal(newSV(slen+1));
85982a32	73	U8 d = (U8 )SvPVX(dst);
85982a32	74	STRLEN dlen = SvLEN(dst)-1;
220e2d4e	75	int code = 0;
220e2d4e	76	STRLEN trmlen = 0;
cc7dbc11	77	U8 trm = term ? (U8) SvPV(term, trmlen) : NULL;
220e2d4e	78
	79	if (offset) {
	80	s += *offset;
6be7c101	81	if (slen > offset){ / safeguard against slen overflow */
	82	slen -= *offset;
	83	}else{
	84	slen = 0;
	85	}
220e2d4e	86	tlen = slen;
220e2d4e	87	}
85982a32	88
6be7c101	89	if (slen == 0){
85982a32	90	SvCUR_set(dst, 0);
	91	SvPOK_only(dst);
	92	goto ENCODE_END;
	93	}
	94
220e2d4e	95	while( (code = do_encode(dir, s, &slen, d, dlen, &dlen, !check,
220e2d4e	96	trm, trmlen)) )
85982a32	97	{
	98	SvCUR_set(dst, dlen+ddone);
	99	SvPOK_only(dst);
0b3236bb	100
220e2d4e	101	if (code == ENCODE_FALLBACK \|\| code == ENCODE_PARTIAL \|\|
220e2d4e	102	code == ENCODE_FOUND_TERM) {
85982a32	103	break;
	104	}
	105	switch (code) {
	106	case ENCODE_NOSPACE:
	107	{
	108	STRLEN more = 0; /* make sure you initialize! */
	109	STRLEN sleft;
	110	sdone += slen;
	111	ddone += dlen;
	112	sleft = tlen - sdone;
fcb875d4	113	#if ENCODE_XS_PROFILE >= 2
85982a32	114	Perl_warn(aTHX_
	115	"more=%d, sdone=%d, sleft=%d, SvLEN(dst)=%d\n",
	116	more, sdone, sleft, SvLEN(dst));
fcb875d4	117	#endif
85982a32	118	if (sdone != 0) { /* has src ever been processed ? */
39cf9a5e	119	#if ENCODE_XS_USEFP == 2
85982a32	120	more = (1.0tlenSvLEN(dst)+sdone-1)/sdone
85982a32	121	- SvLEN(dst);
39cf9a5e	122	#elif ENCODE_XS_USEFP
6e21dc91	123	more = (STRLEN)((1.0SvLEN(dst)+1)/sdone sleft);
39cf9a5e	124	#else
85982a32	125	/* safe until SvLEN(dst) == MAX_INT/16 */
85982a32	126	more = (16SvLEN(dst)+1)/sdone/16 sleft;
39cf9a5e	127	#endif
39cf9a5e	128	}
85982a32	129	more += UTF8_MAXLEN; /* insurance policy */
	130	d = (U8 *) SvGROW(dst, SvLEN(dst) + more);
	131	/* dst need to grow need MORE bytes! */
	132	if (ddone >= SvLEN(dst)) {
	133	Perl_croak(aTHX_ "Destination couldn't be grown.");
	134	}
	135	dlen = SvLEN(dst)-ddone-1;
	136	d += ddone;
	137	s += slen;
	138	slen = tlen-sdone;
	139	continue;
	140	}
	141	case ENCODE_NOREP:
	142	/* encoding */
c6a7db43	143	if (dir == enc->f_utf8) {
85982a32	144	STRLEN clen;
85982a32	145	UV ch =
3e952a88	146	utf8n_to_uvuni(s+slen, (SvCUR(src)-slen),
b0b300a3	147	&clen, UTF8_ALLOW_ANY\|UTF8_CHECK_ONLY);
85982a32	148	if (check & ENCODE_DIE_ON_ERR) {
2fc614e0	149	Perl_croak(aTHX_ ERR_ENCODE_NOMAP,
2fc614e0	150	(UV)ch, enc->name[0]);
4089adc4	151	return &PL_sv_undef; /* never reaches but be safe */
	152	}
	153	if (check & ENCODE_WARN_ON_ERR){
	154	Perl_warner(aTHX_ packWARN(WARN_UTF8),
2fc614e0	155	ERR_ENCODE_NOMAP, (UV)ch, enc->name[0]);
4089adc4	156	}
	157	if (check & ENCODE_RETURN_ON_ERR){
	158	goto ENCODE_SET_SRC;
	159	}
f9d05ba3	160	if (check & (ENCODE_PERLQQ\|ENCODE_HTMLCREF\|ENCODE_XMLCREF)){
	161	SV* subchar =
	162	newSVpvf(check & ENCODE_PERLQQ ? "\\x{%04"UVxf"}" :
	163	check & ENCODE_HTMLCREF ? "&#%" UVuf ";" :
	164	"&#x%" UVxf ";", (UV)ch);
4089adc4	165	sdone += slen + clen;
f9d05ba3	166	ddone += dlen + SvCUR(subchar);
	167	sv_catsv(dst, subchar);
	168	SvREFCNT_dec(subchar);
4089adc4	169	} else {
	170	/* fallback char */
	171	sdone += slen + clen;
	172	ddone += dlen + enc->replen;
	173	sv_catpvn(dst, (char*)enc->rep, enc->replen);
c6a7db43	174	}
b2704119	175	}
85982a32	176	/* decoding */
c6a7db43	177	else {
85982a32	178	if (check & ENCODE_DIE_ON_ERR){
2fc614e0	179	Perl_croak(aTHX_ ERR_DECODE_NOMAP,
436c6dd3	180	enc->name[0], (UV)s[slen]);
4089adc4	181	return &PL_sv_undef; /* never reaches but be safe */
	182	}
	183	if (check & ENCODE_WARN_ON_ERR){
	184	Perl_warner(
	185	aTHX_ packWARN(WARN_UTF8),
2fc614e0	186	ERR_DECODE_NOMAP,
436c6dd3	187	enc->name[0], (UV)s[slen]);
4089adc4	188	}
	189	if (check & ENCODE_RETURN_ON_ERR){
	190	goto ENCODE_SET_SRC;
	191	}
	192	if (check &
	193	(ENCODE_PERLQQ\|ENCODE_HTMLCREF\|ENCODE_XMLCREF)){
f9d05ba3	194	SV* subchar = newSVpvf("\\x%02" UVXf, (UV)s[slen]);
4089adc4	195	sdone += slen + 1;
f9d05ba3	196	ddone += dlen + SvCUR(subchar);
	197	sv_catsv(dst, subchar);
	198	SvREFCNT_dec(subchar);
4089adc4	199	} else {
	200	sdone += slen + 1;
	201	ddone += dlen + strlen(FBCHAR_UTF8);
	202	sv_catpv(dst, FBCHAR_UTF8);
aa0053b7	203	}
b2704119	204	}
85982a32	205	/* settle variables when fallback */
b0b300a3	206	d = (U8 *)SvEND(dst);
b0b300a3	207	dlen = SvLEN(dst) - ddone - 1;
3e952a88	208	s = (U8*)SvPVX(src) + sdone;
b2704119	209	slen = tlen - sdone;
b2704119	210	break;
2f2b4ff2	211
85982a32	212	default:
	213	Perl_croak(aTHX_ "Unexpected code %d converting %s %s",
	214	code, (dir == enc->f_utf8) ? "to" : "from",
	215	enc->name[0]);
	216	return &PL_sv_undef;
aa0053b7	217	}
85982a32	218	}
85982a32	219	ENCODE_SET_SRC:
ca777f1c	220	if (check && !(check & ENCODE_LEAVE_SRC)){
ca777f1c	221	sdone = SvCUR(src) - (slen+sdone);
85982a32	222	if (sdone) {
85982a32	223	sv_setpvn(src, (char*)s+slen, sdone);
aa0053b7	224	}
85982a32	225	SvCUR_set(src, sdone);
2f2b4ff2	226	}
85982a32	227	/* warn("check = 0x%X, code = 0x%d\n", check, code); */
c6a7db43	228
85982a32	229	SvCUR_set(dst, dlen+ddone);
85982a32	230	SvPOK_only(dst);
c6a7db43	231
39cf9a5e	232	#if ENCODE_XS_PROFILE
39cf9a5e	233	if (SvCUR(dst) > SvCUR(src)){
85982a32	234	Perl_warn(aTHX_
	235	"SvLEN(dst)=%d, SvCUR(dst)=%d. %d bytes unused(%f %%)\n",
	236	SvLEN(dst), SvCUR(dst), SvLEN(dst) - SvCUR(dst),
	237	(SvLEN(dst) - SvCUR(dst))1.0/SvLEN(dst)100.0);
39cf9a5e	238	}
3c49ab08	239	#endif
c6a7db43	240
220e2d4e	241	if (offset)
	242	*offset += sdone + slen;
	243
85982a32	244	ENCODE_END:
0b3236bb	245	*SvEND(dst) = '\0';
220e2d4e	246	if (retcode) *retcode = code;
aa0053b7	247	return dst;
2f2b4ff2	248	}
2f2b4ff2	249
ab3374e4	250	MODULE = Encode PACKAGE = Encode::utf8 PREFIX = Method_
ab3374e4	251
a0d8a30e	252	PROTOTYPES: DISABLE
	253
	254	void
b536bf57	255	Method_decode_xs(obj,src,check = 0)
ab3374e4	256	SV * obj
	257	SV * src
	258	int check
	259	CODE:
	260	{
	261	STRLEN slen;
	262	U8 s = (U8 ) SvPV(src, slen);
	263	U8 e = (U8 ) SvEND(src);
b536bf57	264	SV dst = newSV(slen>0?slen:1); / newSV() abhors 0 -- inaba */
cc836e95	265
	266	/*
	267	* PerlO check -- we assume the object is of PerlIO if renewed
	268	* and if so, we set RETURN_ON_ERR for partial character
	269	*/
	270	int renewed = 0;
	271	dSP; ENTER; SAVETMPS;
	272	PUSHMARK(sp);
	273	XPUSHs(obj);
	274	PUTBACK;
	275	if (call_method("renewed",G_SCALAR) == 1) {
	276	SPAGAIN;
	277	renewed = POPi;
	278	PUTBACK;
	279	#if 0
	280	fprintf(stderr, "renewed == %d\n", renewed);
	281	#endif
	282	if (renewed){ check \|= ENCODE_RETURN_ON_ERR; }
	283	}
	284	FREETMPS; LEAVE;
	285	/* end PerlIO check */
	286
ab3374e4	287	SvPOK_only(dst);
	288	SvCUR_set(dst,0);
	289	if (SvUTF8(src)) {
	290	s = utf8_to_bytes(s,&slen);
	291	if (s) {
	292	SvCUR_set(src,slen);
	293	SvUTF8_off(src);
	294	e = s+slen;
	295	}
	296	else {
	297	croak("Cannot decode string with wide characters");
	298	}
	299	}
	300	while (s < e) {
	301	if (UTF8_IS_INVARIANT(s) \|\| UTF8_IS_START(s)) {
	302	U8 skip = UTF8SKIP(s);
	303	if ((s + skip) > e) {
	304	/* Partial character - done */
f9d05ba3	305	goto decode_utf8_fallback;
ab3374e4	306	}
	307	else if (is_utf8_char(s)) {
	308	/* Whole char is good */
	309	sv_catpvn(dst,(char *)s,skip);
	310	s += skip;
	311	continue;
	312	}
	313	else {
	314	/* starts ok but isn't "good" */
	315	}
	316	}
	317	else {
	318	/* Invalid start byte */
	319	}
	320	/* If we get here there is something wrong with alleged UTF-8 */
f9d05ba3	321	decode_utf8_fallback:
ab3374e4	322	if (check & ENCODE_DIE_ON_ERR){
	323	Perl_croak(aTHX_ ERR_DECODE_NOMAP, "utf8", (UV)*s);
	324	XSRETURN(0);
	325	}
	326	if (check & ENCODE_WARN_ON_ERR){
	327	Perl_warner(aTHX_ packWARN(WARN_UTF8),
	328	ERR_DECODE_NOMAP, "utf8", (UV)*s);
	329	}
	330	if (check & ENCODE_RETURN_ON_ERR) {
	331	break;
	332	}
	333	if (check & (ENCODE_PERLQQ\|ENCODE_HTMLCREF\|ENCODE_XMLCREF)){
f9d05ba3	334	SV* subchar = newSVpvf("\\x%02" UVXf, (UV)*s);
	335	sv_catsv(dst, subchar);
	336	SvREFCNT_dec(subchar);
ab3374e4	337	} else {
	338	sv_catpv(dst, FBCHAR_UTF8);
	339	}
	340	s++;
	341	}
	342	*SvEND(dst) = '\0';
	343
	344	/* Clear out translated part of source unless asked not to */
	345	if (check && !(check & ENCODE_LEAVE_SRC)){
	346	slen = e-s;
	347	if (slen) {
	348	sv_setpvn(src, (char*)s, slen);
	349	}
	350	SvCUR_set(src, slen);
	351	}
	352	SvUTF8_on(dst);
	353	ST(0) = sv_2mortal(dst);
	354	XSRETURN(1);
	355	}
	356
	357	void
b536bf57	358	Method_encode_xs(obj,src,check = 0)
ab3374e4	359	SV * obj
	360	SV * src
	361	int check
	362	CODE:
	363	{
	364	STRLEN slen;
	365	U8 s = (U8 ) SvPV(src, slen);
	366	U8 e = (U8 ) SvEND(src);
b536bf57	367	SV dst = newSV(slen>0?slen:1); / newSV() abhors 0 -- inaba */
ab3374e4	368	if (SvUTF8(src)) {
	369	/* Already encoded - trust it and just copy the octets */
	370	sv_setpvn(dst,(char *)s,(e-s));
	371	s = e;
	372	}
	373	else {
	374	/* Native bytes - can always encode */
b536bf57	375	U8 d = (U8 ) SvGROW(dst, 2slen+1); / +1 or assertion will botch */
ab3374e4	376	while (s < e) {
	377	UV uv = NATIVE_TO_UNI((UV) *s++);
	378	if (UNI_IS_INVARIANT(uv))
	379	*d++ = (U8)UTF_TO_NATIVE(uv);
	380	else {
	381	*d++ = (U8)UTF8_EIGHT_BIT_HI(uv);
	382	*d++ = (U8)UTF8_EIGHT_BIT_LO(uv);
	383	}
	384	}
	385	SvCUR_set(dst, d- (U8 *)SvPVX(dst));
	386	*SvEND(dst) = '\0';
	387	}
	388
	389	/* Clear out translated part of source unless asked not to */
	390	if (check && !(check & ENCODE_LEAVE_SRC)){
	391	slen = e-s;
	392	if (slen) {
	393	sv_setpvn(src, (char*)s, slen);
	394	}
	395	SvCUR_set(src, slen);
	396	}
	397	SvPOK_only(dst);
	398	SvUTF8_off(dst);
	399	ST(0) = sv_2mortal(dst);
	400	XSRETURN(1);
	401	}
	402
50d26985	403	MODULE = Encode PACKAGE = Encode::XS PREFIX = Method_
2f2b4ff2	404
	405	PROTOTYPES: ENABLE
	406
	407	void
a0d8a30e	408	Method_renew(obj)
	409	SV * obj
	410	CODE:
	411	{
	412	XSRETURN(1);
	413	}
	414
cc836e95	415	int
	416	Method_renewed(obj)
	417	SV * obj
	418	CODE:
	419	RETVAL = 0;
	420	OUTPUT:
	421	RETVAL
	422
a0d8a30e	423	void
0a95303c	424	Method_name(obj)
	425	SV * obj
	426	CODE:
85982a32	427	{
	428	encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj)));
	429	ST(0) = sv_2mortal(newSVpvn(enc->name[0],strlen(enc->name[0])));
	430	XSRETURN(1);
	431	}
0a95303c	432
0a95303c	433	void
220e2d4e	434	Method_cat_decode(obj, dst, src, off, term, check = 0)
	435	SV * obj
	436	SV * dst
	437	SV * src
	438	SV * off
	439	SV * term
	440	int check
	441	CODE:
	442	{
	443	encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj)));
	444	STRLEN offset = (STRLEN)SvIV(off);
	445	int code = 0;
	446	if (SvUTF8(src)) {
	447	sv_utf8_downgrade(src, FALSE);
	448	}
	449	sv_catsv(dst, encode_method(aTHX_ enc, enc->t_utf8, src, check,
	450	&offset, term, &code));
	451	SvIVX(off) = (IV)offset;
	452	if (code == ENCODE_FOUND_TERM) {
	453	ST(0) = &PL_sv_yes;
	454	}else{
	455	ST(0) = &PL_sv_no;
	456	}
	457	XSRETURN(1);
	458	}
	459
	460	void
b2704119	461	Method_decode(obj,src,check = 0)
2f2b4ff2	462	SV * obj
2f2b4ff2	463	SV * src
b2704119	464	int check
2f2b4ff2	465	CODE:
aae85ceb	466	{
85982a32	467	encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj)));
ab3374e4	468	if (SvUTF8(src)) {
	469	sv_utf8_downgrade(src, FALSE);
	470	}
220e2d4e	471	ST(0) = encode_method(aTHX_ enc, enc->t_utf8, src, check,
220e2d4e	472	NULL, Nullsv, NULL);
85982a32	473	SvUTF8_on(ST(0));
aae85ceb	474	XSRETURN(1);
	475	}
	476
	477	void
85982a32	478	Method_encode(obj,src,check = 0)
aae85ceb	479	SV * obj
85982a32	480	SV * src
85982a32	481	int check
aae85ceb	482	CODE:
aae85ceb	483	{
85982a32	484	encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj)));
85982a32	485	sv_utf8_upgrade(src);
220e2d4e	486	ST(0) = encode_method(aTHX_ enc, enc->f_utf8, src, check,
220e2d4e	487	NULL, Nullsv, NULL);
aae85ceb	488	XSRETURN(1);
	489	}
	490
0ab8f81e	491	void
	492	Method_needs_lines(obj)
	493	SV * obj
	494	CODE:
	495	{
b32afa7c	496	/* encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj))); */
0ab8f81e	497	ST(0) = &PL_sv_no;
	498	XSRETURN(1);
	499	}
	500
	501	void
	502	Method_perlio_ok(obj)
	503	SV * obj
	504	CODE:
	505	{
b32afa7c	506	/* encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj))); */
10c5ecbb	507	/* require_pv(PERLIO_FILENAME); */
	508
	509	eval_pv("require PerlIO::encoding", 0);
	510
	511	if (SvTRUE(get_sv("@", 0))) {
0ab8f81e	512	ST(0) = &PL_sv_no;
10c5ecbb	513	}else{
10c5ecbb	514	ST(0) = &PL_sv_yes;
0ab8f81e	515	}
	516	XSRETURN(1);
	517	}
	518
67e989fb	519	MODULE = Encode PACKAGE = Encode
2c674647	520
	521	PROTOTYPES: ENABLE
	522
67e989fb	523	I32
2c674647	524	_bytes_to_utf8(sv, ...)
85982a32	525	SV * sv
	526	CODE:
	527	{
	528	SV * encoding = items == 2 ? ST(1) : Nullsv;
c6a7db43	529
85982a32	530	if (encoding)
	531	RETVAL = _encoded_bytes_to_utf8(sv, SvPV_nolen(encoding));
	532	else {
	533	STRLEN len;
	534	U8* s = (U8*)SvPV(sv, len);
	535	U8* converted;
	536
	537	converted = bytes_to_utf8(s, &len); /* This allocs */
	538	sv_setpvn(sv, (char *)converted, len);
	539	SvUTF8_on(sv); /* XXX Should we? */
	540	Safefree(converted); /* ... so free it */
	541	RETVAL = len;
	542	}
	543	}
	544	OUTPUT:
	545	RETVAL
2c674647	546
67e989fb	547	I32
2c674647	548	_utf8_to_bytes(sv, ...)
85982a32	549	SV * sv
	550	CODE:
	551	{
	552	SV * to = items > 1 ? ST(1) : Nullsv;
	553	SV * check = items > 2 ? ST(2) : Nullsv;
	554
	555	if (to) {
	556	RETVAL = _encoded_utf8_to_bytes(sv, SvPV_nolen(to));
	557	} else {
	558	STRLEN len;
	559	U8 s = (U8)SvPV(sv, len);
	560
	561	RETVAL = 0;
	562	if (SvTRUE(check)) {
	563	/* Must do things the slow way */
	564	U8 *dest;
	565	/* We need a copy to pass to check() */
c6a7db43	566	U8 src = (U8)savepv((char *)s);
85982a32	567	U8 *send = s + len;
	568
	569	New(83, dest, len, U8); /* I think */
	570
	571	while (s < send) {
	572	if (*s < 0x80){
	573	dest++ = s++;
	574	} else {
	575	STRLEN ulen;
	576	UV uv = *s++;
	577
	578	/* Have to do it all ourselves because of error routine,
	579	aargh. */
	580	if (!(uv & 0x40)){ goto failure; }
	581	if (!(uv & 0x20)) { ulen = 2; uv &= 0x1f; }
	582	else if (!(uv & 0x10)) { ulen = 3; uv &= 0x0f; }
	583	else if (!(uv & 0x08)) { ulen = 4; uv &= 0x07; }
	584	else if (!(uv & 0x04)) { ulen = 5; uv &= 0x03; }
	585	else if (!(uv & 0x02)) { ulen = 6; uv &= 0x01; }
	586	else if (!(uv & 0x01)) { ulen = 7; uv = 0; }
	587	else { ulen = 13; uv = 0; }
87714904	588
85982a32	589	/* Note change to utf8.c variable naming, for variety */
85982a32	590	while (ulen--) {
c6a7db43	591	if ((*s & 0xc0) != 0x80){
c6a7db43	592	goto failure;
85982a32	593	} else {
	594	uv = (uv << 6) \| (*s++ & 0x3f);
	595	}
87714904	596	}
67e989fb	597	if (uv > 256) {
67e989fb	598	failure:
85982a32	599	call_failure(check, s, dest, src);
85982a32	600	/* Now what happens? */
67e989fb	601	}
67e989fb	602	*dest++ = (U8)uv;
85982a32	603	}
	604	}
	605	} else {
	606	RETVAL = (utf8_to_bytes(s, &len) ? len : 0);
2c674647	607	}
85982a32	608	}
	609	}
	610	OUTPUT:
	611	RETVAL
2c674647	612
2c674647	613	bool
b2704119	614	is_utf8(sv, check = 0)
4411f3b6	615	SV * sv
b2704119	616	int check
85982a32	617	CODE:
	618	{
	619	if (SvGMAGICAL(sv)) /* it could be $1, for example */
	620	sv = newSVsv(sv); /* GMAGIG will be done */
	621	if (SvPOK(sv)) {
	622	RETVAL = SvUTF8(sv) ? TRUE : FALSE;
	623	if (RETVAL &&
	624	check &&
	625	!is_utf8_string((U8*)SvPVX(sv), SvCUR(sv)))
2c674647	626	RETVAL = FALSE;
85982a32	627	} else {
	628	RETVAL = FALSE;
	629	}
	630	if (sv != ST(0))
	631	SvREFCNT_dec(sv); /* it was a temp copy */
	632	}
	633	OUTPUT:
	634	RETVAL
2c674647	635
2c674647	636	SV *
4411f3b6	637	_utf8_on(sv)
85982a32	638	SV * sv
	639	CODE:
	640	{
	641	if (SvPOK(sv)) {
	642	SV *rsv = newSViv(SvUTF8(sv));
	643	RETVAL = rsv;
	644	SvUTF8_on(sv);
	645	} else {
	646	RETVAL = &PL_sv_undef;
	647	}
	648	}
	649	OUTPUT:
	650	RETVAL
2c674647	651
2c674647	652	SV *
4411f3b6	653	_utf8_off(sv)
85982a32	654	SV * sv
	655	CODE:
	656	{
	657	if (SvPOK(sv)) {
	658	SV *rsv = newSViv(SvUTF8(sv));
	659	RETVAL = rsv;
	660	SvUTF8_off(sv);
	661	} else {
	662	RETVAL = &PL_sv_undef;
	663	}
	664	}
	665	OUTPUT:
	666	RETVAL
	667
85982a32	668	int
	669	DIE_ON_ERR()
	670	CODE:
	671	RETVAL = ENCODE_DIE_ON_ERR;
	672	OUTPUT:
	673	RETVAL
	674
c6a7db43	675	int
85982a32	676	WARN_ON_ERR()
	677	CODE:
	678	RETVAL = ENCODE_WARN_ON_ERR;
	679	OUTPUT:
	680	RETVAL
	681
	682	int
	683	LEAVE_SRC()
	684	CODE:
	685	RETVAL = ENCODE_LEAVE_SRC;
	686	OUTPUT:
	687	RETVAL
	688
	689	int
	690	RETURN_ON_ERR()
	691	CODE:
	692	RETVAL = ENCODE_RETURN_ON_ERR;
	693	OUTPUT:
	694	RETVAL
	695
	696	int
	697	PERLQQ()
	698	CODE:
	699	RETVAL = ENCODE_PERLQQ;
	700	OUTPUT:
	701	RETVAL
	702
	703	int
af1f55d9	704	HTMLCREF()
	705	CODE:
	706	RETVAL = ENCODE_HTMLCREF;
	707	OUTPUT:
	708	RETVAL
	709
	710	int
	711	XMLCREF()
	712	CODE:
	713	RETVAL = ENCODE_XMLCREF;
	714	OUTPUT:
	715	RETVAL
	716
	717	int
85982a32	718	FB_DEFAULT()
	719	CODE:
	720	RETVAL = ENCODE_FB_DEFAULT;
	721	OUTPUT:
	722	RETVAL
	723
	724	int
	725	FB_CROAK()
	726	CODE:
	727	RETVAL = ENCODE_FB_CROAK;
	728	OUTPUT:
	729	RETVAL
	730
	731	int
	732	FB_QUIET()
	733	CODE:
	734	RETVAL = ENCODE_FB_QUIET;
	735	OUTPUT:
	736	RETVAL
	737
	738	int
	739	FB_WARN()
	740	CODE:
	741	RETVAL = ENCODE_FB_WARN;
	742	OUTPUT:
	743	RETVAL
	744
	745	int
	746	FB_PERLQQ()
	747	CODE:
	748	RETVAL = ENCODE_FB_PERLQQ;
	749	OUTPUT:
	750	RETVAL
2c674647	751
af1f55d9	752	int
	753	FB_HTMLCREF()
	754	CODE:
	755	RETVAL = ENCODE_FB_HTMLCREF;
	756	OUTPUT:
	757	RETVAL
	758
	759	int
	760	FB_XMLCREF()
	761	CODE:
	762	RETVAL = ENCODE_FB_XMLCREF;
	763	OUTPUT:
	764	RETVAL
	765
33af2bc7	766	BOOT:
33af2bc7	767	{
85982a32	768	#include "def_t.h"
e7cbefb8	769	#include "def_t.exh"
33af2bc7	770	}