/*
- $Id: Encode.xs,v 1.41 2002/04/27 18:59:50 dankogai Exp $
+ $Id: Encode.xs,v 2.0 2004/05/16 20:55:15 dankogai Exp $
*/
#define PERL_NO_GET_CONTEXT
}
+#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)
+ int check, STRLEN * offset, SV * term, int * retcode)
{
STRLEN slen;
U8 *s = (U8 *) SvPV(src, slen);
SV *dst = sv_2mortal(newSV(slen+1));
U8 *d = (U8 *)SvPVX(dst);
STRLEN dlen = SvLEN(dst)-1;
- int code;
+ 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){
+ if (slen == 0){
SvCUR_set(dst, 0);
SvPOK_only(dst);
goto ENCODE_END;
}
- while (code = do_encode(dir, s, &slen, d, dlen, &dlen, !check))
+ 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){
+ if (code == ENCODE_FALLBACK || code == ENCODE_PARTIAL ||
+ code == ENCODE_FOUND_TERM) {
break;
}
switch (code) {
more = (1.0*tlen*SvLEN(dst)+sdone-1)/sdone
- SvLEN(dst);
#elif ENCODE_XS_USEFP
- more = (1.0*SvLEN(dst)+1)/sdone * sleft;
+ 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;
utf8n_to_uvuni(s+slen, (SvCUR(src)-slen),
&clen, UTF8_ALLOW_ANY|UTF8_CHECK_ONLY);
if (check & ENCODE_DIE_ON_ERR) {
- Perl_croak(
- aTHX_ "\"\\N{U+%" UVxf "}\" does not map to %s, %d",
- ch, enc->name[0], __LINE__);
- }else{
- if (check & ENCODE_RETURN_ON_ERR){
- if (check & ENCODE_WARN_ON_ERR){
- Perl_warner(
- aTHX_ packWARN(WARN_UTF8),
- "\"\\N{U+%" UVxf "}\" does not map to %s",
- ch,enc->name[0]);
- }
- goto ENCODE_SET_SRC;
- }else if (check & ENCODE_PERLQQ){
- SV* perlqq =
- sv_2mortal(newSVpvf("\\x{%04"UVxf"}", ch));
- sdone += slen + clen;
- ddone += dlen + SvCUR(perlqq);
- sv_catsv(dst, perlqq);
- }else if (check & ENCODE_HTMLCREF){
- SV* htmlcref =
- sv_2mortal(newSVpvf("&#%" UVuf ";", ch));
- sdone += slen + clen;
- ddone += dlen + SvCUR(htmlcref);
- sv_catsv(dst, htmlcref);
- }else if (check & ENCODE_XMLCREF){
- SV* xmlcref =
- sv_2mortal(newSVpvf("&#x%" UVxf ";", ch));
- sdone += slen + clen;
- ddone += dlen + SvCUR(xmlcref);
- sv_catsv(dst, xmlcref);
- } else {
- /* fallback char */
- sdone += slen + clen;
- ddone += dlen + enc->replen;
- sv_catpvn(dst, (char*)enc->rep, enc->replen);
- }
+ 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_ "%s \"\\x%02" UVXf
- "\" 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%02" UVXf
- "\" does not map to Unicode (%d)",
- enc->name[0], (U8) s[slen], code);
- }
- goto ENCODE_SET_SRC;
- }else if (check &
- (ENCODE_PERLQQ|ENCODE_HTMLCREF|ENCODE_XMLCREF)){
- SV* perlqq =
- sv_2mortal(newSVpvf("\\x%02" UVXf, 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);
- }
+ 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 */
}
#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:
}
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
CODE:
{
encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj)));
- ST(0) = encode_method(aTHX_ enc, enc->t_utf8, src, check);
+ 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);
}
{
encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj)));
sv_utf8_upgrade(src);
- ST(0) = encode_method(aTHX_ enc, enc->f_utf8, src, check);
+ ST(0) = encode_method(aTHX_ enc, enc->f_utf8, src, check,
+ NULL, Nullsv, NULL);
XSRETURN(1);
}
SV * obj
CODE:
{
- encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj)));
+ /* encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj))); */
ST(0) = &PL_sv_no;
XSRETURN(1);
}
SV * obj
CODE:
{
- encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj)));
+ /* encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj))); */
/* require_pv(PERLIO_FILENAME); */
eval_pv("require PerlIO::encoding", 0);
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