[perl5.git] / ext / Encode / Encode.xs

/*
 $Id: Encode.xs,v 1.56 2003/06/18 09:29:02 dankogai Exp $
 */

#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){
		    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_ 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* 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

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

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 */
    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 */
	    	break;
	    }
	    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 */
	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* perlqq = newSVpvf("\\x%02" UVXf, (UV)*s);
    	    sv_catsv(dst, perlqq);
	    SvREFCNT_dec(perlqq);
	} 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);
}

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	/*
b5ab1f6f	2	$Id: Encode.xs,v 1.56 2003/06/18 09:29:02 dankogai Exp $
85982a32 JH	3	*/
85982a32 JH	4
fcf2db38	5	#define PERL_NO_GET_CONTEXT
2c674647 JH	6	#include "EXTERN.h"
	7	#include "perl.h"
	8	#include "XSUB.h"
2f2b4ff2 NIS	9	#define U8 U8
2f2b4ff2 NIS	10	#include "encode.h"
10c5ecbb JH	11
10c5ecbb JH	12	# define PERLIO_MODNAME "PerlIO::encoding"
0ab8f81e	13	# define PERLIO_FILENAME "PerlIO/encoding.pm"
aae85ceb	14
85982a32 JH	15	/* set 1 or more to profile. t/encoding.t dumps core because of
85982a32 JH	16	Perl_warner and PerlIO don't work well */
c6a7db43	17	#define ENCODE_XS_PROFILE 0
39cf9a5e	18
85982a32 JH	19	/* set 0 to disable floating point to calculate buffer size for
85982a32 JH	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 JH	29	UNIMPLEMENTED(_encoded_utf8_to_bytes, I32)
7e9a885a JH	30	UNIMPLEMENTED(_encoded_bytes_to_utf8, I32)
33af2bc7	31
b0b300a3	32	void
aa0053b7	33	Encode_XSEncoding(pTHX_ encode_t * enc)
2f2b4ff2	34	{
aa0053b7 NIS	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 NIS	48	}
2f2b4ff2 NIS	49
aa0053b7 NIS	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 JH	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 NIS	64	STRLEN slen;
aa0053b7 NIS	65	U8 s = (U8 ) SvPV(src, slen);
3aececda NIS	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 JH	73	U8 d = (U8 )SvPVX(dst);
85982a32 JH	74	STRLEN dlen = SvLEN(dst)-1;
220e2d4e IH	75	int code = 0;
220e2d4e IH	76	STRLEN trmlen = 0;
cc7dbc11	77	U8 trm = term ? (U8) SvPV(term, trmlen) : NULL;
220e2d4e IH	78
	79	if (offset) {
	80	s += *offset;
6be7c101 JH	81	if (slen > offset){ / safeguard against slen overflow */
	82	slen -= *offset;
	83	}else{
	84	slen = 0;
	85	}
220e2d4e IH	86	tlen = slen;
220e2d4e IH	87	}
85982a32	88
6be7c101	89	if (slen == 0){
85982a32 JH	90	SvCUR_set(dst, 0);
	91	SvPOK_only(dst);
	92	goto ENCODE_END;
	93	}
	94
220e2d4e IH	95	while( (code = do_encode(dir, s, &slen, d, dlen, &dlen, !check,
220e2d4e IH	96	trm, trmlen)) )
85982a32 JH	97	{
	98	SvCUR_set(dst, dlen+ddone);
	99	SvPOK_only(dst);
0b3236bb	100
220e2d4e IH	101	if (code == ENCODE_FALLBACK \|\| code == ENCODE_PARTIAL \|\|
220e2d4e IH	102	code == ENCODE_FOUND_TERM) {
85982a32 JH	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 JH	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 JH	120	more = (1.0tlenSvLEN(dst)+sdone-1)/sdone
85982a32 JH	121	- SvLEN(dst);
39cf9a5e	122	#elif ENCODE_XS_USEFP
6e21dc91	123	more = (STRLEN)((1.0SvLEN(dst)+1)/sdone sleft);
39cf9a5e	124	#else
85982a32 JH	125	/* safe until SvLEN(dst) == MAX_INT/16 */
85982a32 JH	126	more = (16SvLEN(dst)+1)/sdone/16 sleft;
39cf9a5e	127	#endif
39cf9a5e	128	}
85982a32 JH	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 JH	144	STRLEN clen;
85982a32 JH	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 JH	149	Perl_croak(aTHX_ ERR_ENCODE_NOMAP,
2fc614e0 JH	150	(UV)ch, enc->name[0]);
4089adc4 JH	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 JH	156	}
	157	if (check & ENCODE_RETURN_ON_ERR){
	158	goto ENCODE_SET_SRC;
	159	}
	160	if (check & ENCODE_PERLQQ){
	161	SV* perlqq =
	162	sv_2mortal(newSVpvf("\\x{%04"UVxf"}", (UV)ch));
	163	sdone += slen + clen;
	164	ddone += dlen + SvCUR(perlqq);
	165	sv_catsv(dst, perlqq);
	166	}else if (check & ENCODE_HTMLCREF){
	167	SV* htmlcref =
	168	sv_2mortal(newSVpvf("&#%" UVuf ";", (UV)ch));
	169	sdone += slen + clen;
	170	ddone += dlen + SvCUR(htmlcref);
	171	sv_catsv(dst, htmlcref);
	172	}else if (check & ENCODE_XMLCREF){
	173	SV* xmlcref =
	174	sv_2mortal(newSVpvf("&#x%" UVxf ";", (UV)ch));
	175	sdone += slen + clen;
	176	ddone += dlen + SvCUR(xmlcref);
	177	sv_catsv(dst, xmlcref);
	178	} else {
	179	/* fallback char */
	180	sdone += slen + clen;
	181	ddone += dlen + enc->replen;
	182	sv_catpvn(dst, (char*)enc->rep, enc->replen);
c6a7db43	183	}
b2704119	184	}
85982a32	185	/* decoding */
c6a7db43	186	else {
85982a32	187	if (check & ENCODE_DIE_ON_ERR){
2fc614e0	188	Perl_croak(aTHX_ ERR_DECODE_NOMAP,
436c6dd3	189	enc->name[0], (UV)s[slen]);
4089adc4 JH	190	return &PL_sv_undef; /* never reaches but be safe */
	191	}
	192	if (check & ENCODE_WARN_ON_ERR){
	193	Perl_warner(
	194	aTHX_ packWARN(WARN_UTF8),
2fc614e0	195	ERR_DECODE_NOMAP,
436c6dd3	196	enc->name[0], (UV)s[slen]);
4089adc4 JH	197	}
	198	if (check & ENCODE_RETURN_ON_ERR){
	199	goto ENCODE_SET_SRC;
	200	}
	201	if (check &
	202	(ENCODE_PERLQQ\|ENCODE_HTMLCREF\|ENCODE_XMLCREF)){
	203	SV* perlqq =
	204	sv_2mortal(newSVpvf("\\x%02" UVXf, (UV)s[slen]));
	205	sdone += slen + 1;
	206	ddone += dlen + SvCUR(perlqq);
	207	sv_catsv(dst, perlqq);
	208	} else {
	209	sdone += slen + 1;
	210	ddone += dlen + strlen(FBCHAR_UTF8);
	211	sv_catpv(dst, FBCHAR_UTF8);
aa0053b7	212	}
b2704119	213	}
85982a32	214	/* settle variables when fallback */
b0b300a3 JH	215	d = (U8 *)SvEND(dst);
b0b300a3 JH	216	dlen = SvLEN(dst) - ddone - 1;
3e952a88	217	s = (U8*)SvPVX(src) + sdone;
b2704119 JH	218	slen = tlen - sdone;
b2704119 JH	219	break;
2f2b4ff2	220
85982a32 JH	221	default:
	222	Perl_croak(aTHX_ "Unexpected code %d converting %s %s",
	223	code, (dir == enc->f_utf8) ? "to" : "from",
	224	enc->name[0]);
	225	return &PL_sv_undef;
aa0053b7	226	}
85982a32 JH	227	}
85982a32 JH	228	ENCODE_SET_SRC:
ca777f1c NIS	229	if (check && !(check & ENCODE_LEAVE_SRC)){
ca777f1c NIS	230	sdone = SvCUR(src) - (slen+sdone);
85982a32 JH	231	if (sdone) {
85982a32 JH	232	sv_setpvn(src, (char*)s+slen, sdone);
aa0053b7	233	}
85982a32	234	SvCUR_set(src, sdone);
2f2b4ff2	235	}
85982a32	236	/* warn("check = 0x%X, code = 0x%d\n", check, code); */
c6a7db43	237
85982a32 JH	238	SvCUR_set(dst, dlen+ddone);
85982a32 JH	239	SvPOK_only(dst);
c6a7db43	240
39cf9a5e DK	241	#if ENCODE_XS_PROFILE
39cf9a5e DK	242	if (SvCUR(dst) > SvCUR(src)){
85982a32 JH	243	Perl_warn(aTHX_
	244	"SvLEN(dst)=%d, SvCUR(dst)=%d. %d bytes unused(%f %%)\n",
	245	SvLEN(dst), SvCUR(dst), SvLEN(dst) - SvCUR(dst),
	246	(SvLEN(dst) - SvCUR(dst))1.0/SvLEN(dst)100.0);
39cf9a5e	247	}
3c49ab08	248	#endif
c6a7db43	249
220e2d4e IH	250	if (offset)
	251	*offset += sdone + slen;
	252
85982a32	253	ENCODE_END:
0b3236bb	254	*SvEND(dst) = '\0';
220e2d4e	255	if (retcode) *retcode = code;
aa0053b7	256	return dst;
2f2b4ff2 NIS	257	}
2f2b4ff2 NIS	258
ab3374e4 DK	259	MODULE = Encode PACKAGE = Encode::utf8 PREFIX = Method_
ab3374e4 DK	260
a0d8a30e DK	261	PROTOTYPES: DISABLE
	262
	263	void
	264	Method_renew(obj)
	265	SV * obj
	266	CODE:
	267	{
	268	XSRETURN(1);
	269	}
	270
ab3374e4	271	void
b536bf57	272	Method_decode_xs(obj,src,check = 0)
ab3374e4 DK	273	SV * obj
	274	SV * src
	275	int check
	276	CODE:
	277	{
	278	STRLEN slen;
	279	U8 s = (U8 ) SvPV(src, slen);
	280	U8 e = (U8 ) SvEND(src);
b536bf57	281	SV dst = newSV(slen>0?slen:1); / newSV() abhors 0 -- inaba */
ab3374e4 DK	282	SvPOK_only(dst);
	283	SvCUR_set(dst,0);
	284	if (SvUTF8(src)) {
	285	s = utf8_to_bytes(s,&slen);
	286	if (s) {
	287	SvCUR_set(src,slen);
	288	SvUTF8_off(src);
	289	e = s+slen;
	290	}
	291	else {
	292	croak("Cannot decode string with wide characters");
	293	}
	294	}
	295	while (s < e) {
	296	if (UTF8_IS_INVARIANT(s) \|\| UTF8_IS_START(s)) {
	297	U8 skip = UTF8SKIP(s);
	298	if ((s + skip) > e) {
	299	/* Partial character - done */
	300	break;
	301	}
	302	else if (is_utf8_char(s)) {
	303	/* Whole char is good */
	304	sv_catpvn(dst,(char *)s,skip);
	305	s += skip;
	306	continue;
	307	}
	308	else {
	309	/* starts ok but isn't "good" */
	310	}
	311	}
	312	else {
	313	/* Invalid start byte */
	314	}
	315	/* If we get here there is something wrong with alleged UTF-8 */
	316	if (check & ENCODE_DIE_ON_ERR){
	317	Perl_croak(aTHX_ ERR_DECODE_NOMAP, "utf8", (UV)*s);
	318	XSRETURN(0);
	319	}
	320	if (check & ENCODE_WARN_ON_ERR){
	321	Perl_warner(aTHX_ packWARN(WARN_UTF8),
	322	ERR_DECODE_NOMAP, "utf8", (UV)*s);
	323	}
	324	if (check & ENCODE_RETURN_ON_ERR) {
	325	break;
	326	}
	327	if (check & (ENCODE_PERLQQ\|ENCODE_HTMLCREF\|ENCODE_XMLCREF)){
	328	SV* perlqq = newSVpvf("\\x%02" UVXf, (UV)*s);
	329	sv_catsv(dst, perlqq);
	330	SvREFCNT_dec(perlqq);
	331	} else {
	332	sv_catpv(dst, FBCHAR_UTF8);
	333	}
	334	s++;
	335	}
	336	*SvEND(dst) = '\0';
	337
	338	/* Clear out translated part of source unless asked not to */
	339	if (check && !(check & ENCODE_LEAVE_SRC)){
	340	slen = e-s;
	341	if (slen) {
	342	sv_setpvn(src, (char*)s, slen);
	343	}
	344	SvCUR_set(src, slen);
	345	}
346	SvUTF8_on(dst);
347	ST(0) = sv_2mortal(dst);
348	XSRETURN(1);
349	}
350
351	void
b536bf57	352	Method_encode_xs(obj,src,check = 0)
ab3374e4 DK	353	SV * obj
	354	SV * src
	355	int check
	356	CODE:
	357	{
	358	STRLEN slen;
	359	U8 s = (U8 ) SvPV(src, slen);
	360	U8 e = (U8 ) SvEND(src);
b536bf57	361	SV dst = newSV(slen>0?slen:1); / newSV() abhors 0 -- inaba */
ab3374e4 DK	362	if (SvUTF8(src)) {
	363	/* Already encoded - trust it and just copy the octets */
	364	sv_setpvn(dst,(char *)s,(e-s));
	365	s = e;
	366	}
	367	else {
	368	/* Native bytes - can always encode */
b536bf57	369	U8 d = (U8 ) SvGROW(dst, 2slen+1); / +1 or assertion will botch */
ab3374e4 DK	370	while (s < e) {
	371	UV uv = NATIVE_TO_UNI((UV) *s++);
	372	if (UNI_IS_INVARIANT(uv))
	373	*d++ = (U8)UTF_TO_NATIVE(uv);
	374	else {
	375	*d++ = (U8)UTF8_EIGHT_BIT_HI(uv);
	376	*d++ = (U8)UTF8_EIGHT_BIT_LO(uv);
	377	}
	378	}
	379	SvCUR_set(dst, d- (U8 *)SvPVX(dst));
	380	*SvEND(dst) = '\0';
	381	}
	382
	383	/* Clear out translated part of source unless asked not to */
	384	if (check && !(check & ENCODE_LEAVE_SRC)){
	385	slen = e-s;
	386	if (slen) {
	387	sv_setpvn(src, (char*)s, slen);
	388	}
	389	SvCUR_set(src, slen);
	390	}
	391	SvPOK_only(dst);
	392	SvUTF8_off(dst);
	393	ST(0) = sv_2mortal(dst);
	394	XSRETURN(1);
	395	}
	396
50d26985	397	MODULE = Encode PACKAGE = Encode::XS PREFIX = Method_
2f2b4ff2 NIS	398
	399	PROTOTYPES: ENABLE
	400
	401	void
a0d8a30e DK	402	Method_renew(obj)
	403	SV * obj
	404	CODE:
	405	{
	406	XSRETURN(1);
	407	}
	408
	409	void
0a95303c NIS	410	Method_name(obj)
	411	SV * obj
	412	CODE:
85982a32 JH	413	{
	414	encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj)));
	415	ST(0) = sv_2mortal(newSVpvn(enc->name[0],strlen(enc->name[0])));
	416	XSRETURN(1);
	417	}
0a95303c NIS	418
0a95303c NIS	419	void
220e2d4e IH	420	Method_cat_decode(obj, dst, src, off, term, check = 0)
	421	SV * obj
	422	SV * dst
	423	SV * src
	424	SV * off
	425	SV * term
	426	int check
	427	CODE:
	428	{
	429	encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj)));
	430	STRLEN offset = (STRLEN)SvIV(off);
	431	int code = 0;
	432	if (SvUTF8(src)) {
	433	sv_utf8_downgrade(src, FALSE);
	434	}
	435	sv_catsv(dst, encode_method(aTHX_ enc, enc->t_utf8, src, check,
	436	&offset, term, &code));
	437	SvIVX(off) = (IV)offset;
	438	if (code == ENCODE_FOUND_TERM) {
	439	ST(0) = &PL_sv_yes;
	440	}else{
	441	ST(0) = &PL_sv_no;
	442	}
	443	XSRETURN(1);
	444	}
	445
	446	void
b2704119	447	Method_decode(obj,src,check = 0)
2f2b4ff2 NIS	448	SV * obj
2f2b4ff2 NIS	449	SV * src
b2704119	450	int check
2f2b4ff2	451	CODE:
aae85ceb	452	{
85982a32	453	encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj)));
ab3374e4 DK	454	if (SvUTF8(src)) {
	455	sv_utf8_downgrade(src, FALSE);
	456	}
220e2d4e IH	457	ST(0) = encode_method(aTHX_ enc, enc->t_utf8, src, check,
220e2d4e IH	458	NULL, Nullsv, NULL);
85982a32	459	SvUTF8_on(ST(0));
aae85ceb DK	460	XSRETURN(1);
	461	}
	462
	463	void
85982a32	464	Method_encode(obj,src,check = 0)
aae85ceb	465	SV * obj
85982a32 JH	466	SV * src
85982a32 JH	467	int check
aae85ceb DK	468	CODE:
aae85ceb DK	469	{
85982a32 JH	470	encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj)));
85982a32 JH	471	sv_utf8_upgrade(src);
220e2d4e IH	472	ST(0) = encode_method(aTHX_ enc, enc->f_utf8, src, check,
220e2d4e IH	473	NULL, Nullsv, NULL);
aae85ceb DK	474	XSRETURN(1);
	475	}
	476
0ab8f81e JH	477	void
	478	Method_needs_lines(obj)
	479	SV * obj
	480	CODE:
	481	{
b32afa7c	482	/* encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj))); */
0ab8f81e JH	483	ST(0) = &PL_sv_no;
	484	XSRETURN(1);
	485	}
	486
	487	void
	488	Method_perlio_ok(obj)
	489	SV * obj
	490	CODE:
	491	{
b32afa7c	492	/* encode_t enc = INT2PTR(encode_t , SvIV(SvRV(obj))); */
10c5ecbb JH	493	/* require_pv(PERLIO_FILENAME); */
	494
	495	eval_pv("require PerlIO::encoding", 0);
	496
	497	if (SvTRUE(get_sv("@", 0))) {
0ab8f81e	498	ST(0) = &PL_sv_no;
10c5ecbb JH	499	}else{
10c5ecbb JH	500	ST(0) = &PL_sv_yes;
0ab8f81e JH	501	}
	502	XSRETURN(1);
	503	}
	504
67e989fb	505	MODULE = Encode PACKAGE = Encode
2c674647 JH	506
	507	PROTOTYPES: ENABLE
	508
67e989fb	509	I32
2c674647	510	_bytes_to_utf8(sv, ...)
85982a32 JH	511	SV * sv
	512	CODE:
	513	{
	514	SV * encoding = items == 2 ? ST(1) : Nullsv;
c6a7db43	515
85982a32 JH	516	if (encoding)
	517	RETVAL = _encoded_bytes_to_utf8(sv, SvPV_nolen(encoding));
	518	else {
	519	STRLEN len;
	520	U8* s = (U8*)SvPV(sv, len);
	521	U8* converted;
	522
	523	converted = bytes_to_utf8(s, &len); /* This allocs */
	524	sv_setpvn(sv, (char *)converted, len);
	525	SvUTF8_on(sv); /* XXX Should we? */
	526	Safefree(converted); /* ... so free it */
	527	RETVAL = len;
	528	}
	529	}
	530	OUTPUT:
	531	RETVAL
2c674647	532
67e989fb	533	I32
2c674647	534	_utf8_to_bytes(sv, ...)
85982a32 JH	535	SV * sv
	536	CODE:
	537	{
	538	SV * to = items > 1 ? ST(1) : Nullsv;
	539	SV * check = items > 2 ? ST(2) : Nullsv;
	540
	541	if (to) {
	542	RETVAL = _encoded_utf8_to_bytes(sv, SvPV_nolen(to));
	543	} else {
	544	STRLEN len;
	545	U8 s = (U8)SvPV(sv, len);
	546
	547	RETVAL = 0;
	548	if (SvTRUE(check)) {
	549	/* Must do things the slow way */
	550	U8 *dest;
	551	/* We need a copy to pass to check() */
c6a7db43	552	U8 src = (U8)savepv((char *)s);
85982a32 JH	553	U8 *send = s + len;
	554
	555	New(83, dest, len, U8); /* I think */
	556
	557	while (s < send) {
	558	if (*s < 0x80){
	559	dest++ = s++;
	560	} else {
	561	STRLEN ulen;
	562	UV uv = *s++;
	563
	564	/* Have to do it all ourselves because of error routine,
	565	aargh. */
	566	if (!(uv & 0x40)){ goto failure; }
	567	if (!(uv & 0x20)) { ulen = 2; uv &= 0x1f; }
	568	else if (!(uv & 0x10)) { ulen = 3; uv &= 0x0f; }
	569	else if (!(uv & 0x08)) { ulen = 4; uv &= 0x07; }
	570	else if (!(uv & 0x04)) { ulen = 5; uv &= 0x03; }
	571	else if (!(uv & 0x02)) { ulen = 6; uv &= 0x01; }
	572	else if (!(uv & 0x01)) { ulen = 7; uv = 0; }
	573	else { ulen = 13; uv = 0; }
87714904	574
85982a32 JH	575	/* Note change to utf8.c variable naming, for variety */
85982a32 JH	576	while (ulen--) {
c6a7db43 NIS	577	if ((*s & 0xc0) != 0x80){
c6a7db43 NIS	578	goto failure;
85982a32 JH	579	} else {
	580	uv = (uv << 6) \| (*s++ & 0x3f);
	581	}
87714904	582	}
67e989fb JH	583	if (uv > 256) {
67e989fb JH	584	failure:
85982a32 JH	585	call_failure(check, s, dest, src);
85982a32 JH	586	/* Now what happens? */
67e989fb JH	587	}
67e989fb JH	588	*dest++ = (U8)uv;
85982a32 JH	589	}
	590	}
	591	} else {
	592	RETVAL = (utf8_to_bytes(s, &len) ? len : 0);
2c674647	593	}
85982a32 JH	594	}
	595	}
	596	OUTPUT:
	597	RETVAL
2c674647	598
2c674647	599	bool
b2704119	600	is_utf8(sv, check = 0)
4411f3b6	601	SV * sv
b2704119	602	int check
85982a32 JH	603	CODE:
	604	{
	605	if (SvGMAGICAL(sv)) /* it could be $1, for example */
	606	sv = newSVsv(sv); /* GMAGIG will be done */
	607	if (SvPOK(sv)) {
	608	RETVAL = SvUTF8(sv) ? TRUE : FALSE;
	609	if (RETVAL &&
	610	check &&
	611	!is_utf8_string((U8*)SvPVX(sv), SvCUR(sv)))
2c674647	612	RETVAL = FALSE;
85982a32 JH	613	} else {
	614	RETVAL = FALSE;
	615	}
	616	if (sv != ST(0))
	617	SvREFCNT_dec(sv); /* it was a temp copy */
	618	}
	619	OUTPUT:
	620	RETVAL
2c674647 JH	621
2c674647 JH	622	SV *
4411f3b6	623	_utf8_on(sv)
85982a32 JH	624	SV * sv
	625	CODE:
	626	{
	627	if (SvPOK(sv)) {
	628	SV *rsv = newSViv(SvUTF8(sv));
	629	RETVAL = rsv;
	630	SvUTF8_on(sv);
	631	} else {
	632	RETVAL = &PL_sv_undef;
	633	}
	634	}
	635	OUTPUT:
	636	RETVAL
2c674647 JH	637
2c674647 JH	638	SV *
4411f3b6	639	_utf8_off(sv)
85982a32 JH	640	SV * sv
	641	CODE:
	642	{
	643	if (SvPOK(sv)) {
	644	SV *rsv = newSViv(SvUTF8(sv));
	645	RETVAL = rsv;
	646	SvUTF8_off(sv);
	647	} else {
	648	RETVAL = &PL_sv_undef;
	649	}
	650	}
	651	OUTPUT:
	652	RETVAL
	653
85982a32 JH	654	int
	655	DIE_ON_ERR()
	656	CODE:
	657	RETVAL = ENCODE_DIE_ON_ERR;
	658	OUTPUT:
	659	RETVAL
	660
c6a7db43	661	int
85982a32 JH	662	WARN_ON_ERR()
	663	CODE:
	664	RETVAL = ENCODE_WARN_ON_ERR;
	665	OUTPUT:
	666	RETVAL
	667
	668	int
	669	LEAVE_SRC()
	670	CODE:
	671	RETVAL = ENCODE_LEAVE_SRC;
	672	OUTPUT:
	673	RETVAL
	674
	675	int
	676	RETURN_ON_ERR()
	677	CODE:
	678	RETVAL = ENCODE_RETURN_ON_ERR;
	679	OUTPUT:
	680	RETVAL
	681
	682	int
	683	PERLQQ()
	684	CODE:
	685	RETVAL = ENCODE_PERLQQ;
	686	OUTPUT:
	687	RETVAL
	688
	689	int
af1f55d9 JH	690	HTMLCREF()
	691	CODE:
	692	RETVAL = ENCODE_HTMLCREF;
	693	OUTPUT:
	694	RETVAL
	695
	696	int
	697	XMLCREF()
	698	CODE:
	699	RETVAL = ENCODE_XMLCREF;
	700	OUTPUT:
	701	RETVAL
	702
	703	int
85982a32 JH	704	FB_DEFAULT()
	705	CODE:
	706	RETVAL = ENCODE_FB_DEFAULT;
	707	OUTPUT:
	708	RETVAL
	709
	710	int
	711	FB_CROAK()
	712	CODE:
	713	RETVAL = ENCODE_FB_CROAK;
	714	OUTPUT:
	715	RETVAL
	716
	717	int
	718	FB_QUIET()
	719	CODE:
	720	RETVAL = ENCODE_FB_QUIET;
	721	OUTPUT:
	722	RETVAL
	723
	724	int
	725	FB_WARN()
	726	CODE:
	727	RETVAL = ENCODE_FB_WARN;
	728	OUTPUT:
	729	RETVAL
	730
	731	int
	732	FB_PERLQQ()
	733	CODE:
	734	RETVAL = ENCODE_FB_PERLQQ;
	735	OUTPUT:
	736	RETVAL
2c674647	737
af1f55d9 JH	738	int
	739	FB_HTMLCREF()
	740	CODE:
	741	RETVAL = ENCODE_FB_HTMLCREF;
	742	OUTPUT:
	743	RETVAL
	744
	745	int
	746	FB_XMLCREF()
	747	CODE:
	748	RETVAL = ENCODE_FB_XMLCREF;
	749	OUTPUT:
	750	RETVAL
	751
33af2bc7 NIS	752	BOOT:
33af2bc7 NIS	753	{
85982a32	754	#include "def_t.h"
e7cbefb8	755	#include "def_t.exh"
33af2bc7	756	}