/*
- $Id: Encode.xs,v 1.43 2002/05/01 05:41:06 dankogai Exp dankogai $
+ $Id: Encode.xs,v 2.6 2005/09/08 14:17:17 dankogai Exp dankogai $
*/
#define PERL_NO_GET_CONTEXT
UNIMPLEMENTED(_encoded_utf8_to_bytes, I32)
UNIMPLEMENTED(_encoded_bytes_to_utf8, I32)
+#define UTF8_ALLOW_STRICT 0
+#define UTF8_ALLOW_NONSTRICT (UTF8_ALLOW_ANY & \
+ ~(UTF8_ALLOW_CONTINUATION | \
+ UTF8_ALLOW_NON_CONTINUATION | \
+ UTF8_ALLOW_LONG))
+
+static SV* fallback_cb = (SV*)NULL ;
+
void
Encode_XSEncoding(pTHX_ encode_t * enc)
{
}
+#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 *
+do_fallback_cb(pTHX_ UV ch)
+{
+ dSP;
+ int argc;
+ SV* retval;
+ ENTER;
+ SAVETMPS;
+ PUSHMARK(sp);
+ XPUSHs(sv_2mortal(newSVnv((UV)ch)));
+ PUTBACK;
+ argc = call_sv(fallback_cb, G_SCALAR);
+ SPAGAIN;
+ if (argc != 1){
+ croak("fallback sub must return scalar!");
+ }
+ retval = newSVsv(POPs);
+ PUTBACK;
+ FREETMPS;
+ LEAVE;
+ return retval;
+}
+
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;
UV ch =
utf8n_to_uvuni(s+slen, (SvCUR(src)-slen),
&clen, UTF8_ALLOW_ANY|UTF8_CHECK_ONLY);
+ /* if non-representable multibyte prefix at end of current buffer - break*/
+ if (clen > tlen - sdone) break;
if (check & ENCODE_DIE_ON_ERR) {
- Perl_croak(
- aTHX_ "\"\\x{%04" UVxf "}\" does not map to %s",
- (UV)ch, enc->name[0]);
+ 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),
- "\"\\x{%" UVxf "}\" does not map to %s",
- (UV)ch, enc->name[0]);
+ 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));
+ if (check & (ENCODE_PERLQQ|ENCODE_HTMLCREF|ENCODE_XMLCREF)){
+ SV* subchar =
+ (fallback_cb != (SV*)NULL) ? do_fallback_cb(aTHX_ ch) :
+ newSVpvf(check & ENCODE_PERLQQ ? "\\x{%04"UVxf"}" :
+ check & ENCODE_HTMLCREF ? "&#%" UVuf ";" :
+ "&#x%" UVxf ";", (UV)ch);
sdone += slen + clen;
- ddone += dlen + SvCUR(xmlcref);
- sv_catsv(dst, xmlcref);
+ ddone += dlen + SvCUR(subchar);
+ sv_catsv(dst, subchar);
+ SvREFCNT_dec(subchar);
} else {
/* fallback char */
sdone += slen + clen;
/* decoding */
else {
if (check & ENCODE_DIE_ON_ERR){
- Perl_croak(
- aTHX_ "%s \"\\x%02" UVXf
- "\" does not map to Unicode (%d)",
- (UV)enc->name[0], (U8)s[slen], code);
+ 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),
- "%s \"\\x%02" UVXf
- "\" does not map to Unicode (%d)",
- (UV)enc->name[0], (U8)s[slen], code);
+ 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]));
+ SV* subchar =
+ (fallback_cb != (SV*)NULL) ?
+ do_fallback_cb(aTHX_ (UV)s[slen]) :
+ newSVpvf("\\x%02" UVXf, (UV)s[slen]);
sdone += slen + 1;
- ddone += dlen + SvCUR(perlqq);
- sv_catsv(dst, perlqq);
+ ddone += dlen + SvCUR(subchar);
+ sv_catsv(dst, subchar);
+ SvREFCNT_dec(subchar);
} else {
sdone += slen + 1;
ddone += dlen + strlen(FBCHAR_UTF8);
}
#endif
+ if (offset)
+ *offset += sdone + slen;
+
ENCODE_END:
*SvEND(dst) = '\0';
+ if (retcode) *retcode = code;
return dst;
}
+static bool
+strict_utf8(pTHX_ SV* sv)
+{
+ HV* hv;
+ SV** svp;
+ sv = SvRV(sv);
+ if (!sv || SvTYPE(sv) != SVt_PVHV)
+ return 0;
+ hv = (HV*)sv;
+ svp = hv_fetch(hv, "strict_utf8", 11, 0);
+ if (!svp)
+ return 0;
+ return SvTRUE(*svp);
+}
+
+static U8*
+process_utf8(pTHX_ SV* dst, U8* s, U8* e, int check,
+ bool encode, bool strict, bool stop_at_partial)
+{
+ UV uv;
+ STRLEN ulen;
+
+ SvPOK_only(dst);
+ SvCUR_set(dst,0);
+
+ while (s < e) {
+ if (UTF8_IS_INVARIANT(*s)) {
+ sv_catpvn(dst, (char *)s, 1);
+ s++;
+ continue;
+ }
+
+ if (UTF8_IS_START(*s)) {
+ U8 skip = UTF8SKIP(s);
+ if ((s + skip) > e) {
+ /* Partial character */
+ /* XXX could check that rest of bytes are UTF8_IS_CONTINUATION(ch) */
+ if (stop_at_partial || (check & ENCODE_STOP_AT_PARTIAL))
+ break;
+
+ goto malformed_byte;
+ }
+
+ uv = utf8n_to_uvuni(s, e - s, &ulen,
+ UTF8_CHECK_ONLY | (strict ? UTF8_ALLOW_STRICT :
+ UTF8_ALLOW_NONSTRICT)
+ );
+#if 1 /* perl-5.8.6 and older do not check UTF8_ALLOW_LONG */
+ if (strict && uv > PERL_UNICODE_MAX)
+ ulen = -1;
+#endif
+ if (ulen == -1) {
+ if (strict) {
+ uv = utf8n_to_uvuni(s, e - s, &ulen,
+ UTF8_CHECK_ONLY | UTF8_ALLOW_NONSTRICT);
+ if (ulen == -1)
+ goto malformed_byte;
+ goto malformed;
+ }
+ goto malformed_byte;
+ }
+
+
+ /* Whole char is good */
+ sv_catpvn(dst,(char *)s,skip);
+ s += skip;
+ continue;
+ }
+
+ /* If we get here there is something wrong with alleged UTF-8 */
+ malformed_byte:
+ uv = (UV)*s;
+ ulen = 1;
+
+ malformed:
+ if (check & ENCODE_DIE_ON_ERR){
+ if (encode)
+ Perl_croak(aTHX_ ERR_ENCODE_NOMAP, uv, "utf8");
+ else
+ Perl_croak(aTHX_ ERR_DECODE_NOMAP, "utf8", uv);
+ }
+ if (check & ENCODE_WARN_ON_ERR){
+ if (encode)
+ Perl_warner(aTHX_ packWARN(WARN_UTF8),
+ ERR_ENCODE_NOMAP, uv, "utf8");
+ else
+ Perl_warner(aTHX_ packWARN(WARN_UTF8),
+ ERR_DECODE_NOMAP, "utf8", uv);
+ }
+ if (check & ENCODE_RETURN_ON_ERR) {
+ break;
+ }
+ if (check & (ENCODE_PERLQQ|ENCODE_HTMLCREF|ENCODE_XMLCREF)){
+ SV* subchar = newSVpvf(check & ENCODE_PERLQQ ? (ulen == 1 ? "\\x%02" UVXf : "\\x{%04" UVXf "}"):
+ check & ENCODE_HTMLCREF ? "&#%" UVuf ";" :
+ "&#x%" UVxf ";", uv);
+ sv_catsv(dst, subchar);
+ SvREFCNT_dec(subchar);
+ } else {
+ sv_catpv(dst, FBCHAR_UTF8);
+ }
+ s += ulen;
+ }
+ *SvEND(dst) = '\0';
+
+ return s;
+}
+
+
+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 */
+
+ /*
+ * PerlIO check -- we assume the object is of PerlIO if renewed
+ */
+ 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
+ }
+ FREETMPS; LEAVE;
+ /* end PerlIO check */
+
+ 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");
+ }
+ }
+
+ s = process_utf8(aTHX_ dst, s, e, check, 0, strict_utf8(aTHX_ obj), renewed);
+
+ /* 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 */
+ if (strict_utf8(aTHX_ obj)) {
+ s = process_utf8(aTHX_ dst, s, e, check, 1, 1, 0);
+ }
+ else {
+ /* 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:
}
void
-Method_decode(obj,src,check = 0)
+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)));
- ST(0) = encode_method(aTHX_ enc, enc->t_utf8, src, check);
+ 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));
+ SvIV_set(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_sv = &PL_sv_no)
+SV * obj
+SV * src
+SV * check_sv
+CODE:
+{
+ int check;
+ encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj)));
+ if (SvUTF8(src)) {
+ sv_utf8_downgrade(src, FALSE);
+ }
+ if (SvROK(check_sv)){
+ if (fallback_cb == (SV*)NULL){
+ fallback_cb = newSVsv(check_sv); /* First time */
+ }else{
+ SvSetSV(fallback_cb, check_sv); /* Been here before */
+ }
+ check = ENCODE_PERLQQ|ENCODE_LEAVE_SRC; /* same as FB_PERLQQ */
+ }else{
+ fallback_cb = (SV*)NULL;
+ check = SvIV(check_sv);
+ }
+ 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)
+Method_encode(obj,src,check_sv = &PL_sv_no)
SV * obj
SV * src
-int check
+SV * check_sv
CODE:
{
+ int check;
encode_t *enc = INT2PTR(encode_t *, SvIV(SvRV(obj)));
sv_utf8_upgrade(src);
- ST(0) = encode_method(aTHX_ enc, enc->f_utf8, src, check);
+ if (SvROK(check_sv)){
+ if (fallback_cb == (SV*)NULL){
+ fallback_cb = newSVsv(check_sv); /* First time */
+ }else{
+ SvSetSV(fallback_cb, check_sv); /* Been here before */
+ }
+ check = ENCODE_PERLQQ|ENCODE_LEAVE_SRC; /* same as FB_PERLQQ */
+ }else{
+ fallback_cb = (SV*)NULL;
+ check = SvIV(check_sv);
+ }
+ 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);
RETVAL
int
+STOP_AT_PARTIAL()
+CODE:
+ RETVAL = ENCODE_STOP_AT_PARTIAL;
+OUTPUT:
+ RETVAL
+
+int
FB_DEFAULT()
CODE:
RETVAL = ENCODE_FB_DEFAULT;
projects / p5sagit/p5-mst-13.2.git / blobdiff