/*
- $Id: Encode.xs,v 2.2 2004/10/24 13:00:29 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_DECODE_NOMAP "%s \"\\x%02" UVXf "\" does not map to Unicode"
static SV *
-encode_method(pTHX_ encode_t * enc, encpage_t * dir, SV * src,
+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_ const encode_t * enc, const encpage_t * dir, SV * src,
int check, STRLEN * offset, SV * term, int * retcode)
{
STRLEN slen;
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_ ERR_ENCODE_NOMAP,
(UV)ch, enc->name[0]);
}
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);
}
if (check &
(ENCODE_PERLQQ|ENCODE_HTMLCREF|ENCODE_XMLCREF)){
- SV* subchar = 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(subchar);
sv_catsv(dst, subchar);
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
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
+ * PerlIO check -- we assume the object is of PerlIO if renewed
*/
int renewed = 0;
dSP; ENTER; SAVETMPS;
#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) {
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';
+
+ 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)){
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;
+ /* 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 */
}
sv_catsv(dst, encode_method(aTHX_ enc, enc->t_utf8, src, check,
&offset, term, &code));
- SvIVX(off) = (IV)offset;
+ SvIV_set(off, (IV)offset);
if (code == ENCODE_FOUND_TERM) {
ST(0) = &PL_sv_yes;
}else{
}
void
-Method_decode(obj,src,check = 0)
+Method_decode(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)));
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);
+ 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);
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