if (sv) {
MAGIC *mg;
- assert(!(SvTYPE(sv) == SVt_PVAV && AvPAD_NAMELIST(sv)));
-
for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
if (mg->mg_type == type && (!flags || mg->mg_virtual == vtbl)) {
return mg;
* case we should turn on that flag. This didn't use to happen, and to
* avoid as many possible backward compatibility issues as possible, we
* don't turn on the flag unless we have to. So the flag stays off for
- * an entirely ASCII string. We assume that if the string looks like
- * UTF-8, it really is UTF-8: "text in any other encoding that uses
- * bytes with the high bit set is extremely unlikely to pass a UTF-8
- * validity test" (http://en.wikipedia.org/wiki/Charset_detection).
- * There is a potential that we will get it wrong however, especially
- * on short error message text. (If it turns out to be necessary, we
- * could also keep track if the current LC_MESSAGES locale is UTF-8) */
+ * an entirely invariant string. We assume that if the string looks
+ * like UTF-8, it really is UTF-8: "text in any other encoding that
+ * uses bytes with the high bit set is extremely unlikely to pass a
+ * UTF-8 validity test"
+ * (http://en.wikipedia.org/wiki/Charset_detection). There is a
+ * potential that we will get it wrong however, especially on short
+ * error message text. (If it turns out to be necessary, we could also
+ * keep track if the current LC_MESSAGES locale is UTF-8) */
if (! IN_BYTES /* respect 'use bytes' */
- && ! is_ascii_string((U8*) SvPVX_const(sv), SvCUR(sv))
+ && ! is_invariant_string((U8*) SvPVX_const(sv), SvCUR(sv))
&& is_utf8_string((U8*) SvPVX_const(sv), SvCUR(sv)))
{
SvUTF8_on(sv);
SV*
Perl__get_encoding(pTHX)
{
- /* Returns the $^ENCODING or 'use encoding' in effect; NULL if none */
+ /* For core Perl use only: Returns the $^ENCODING or 'use encoding' in
+ * effect; NULL if none.
+ *
+ * $^ENCODING maps to PL_encoding, and is the old way to do things, and is
+ * retained for backwards compatibility. Now, there is a shadow variable
+ * ${^E_NCODING} set only by the encoding pragma, used to give this pragma
+ * lexical scope, unlike the global scope it (shudder) used to have. This
+ * variable maps to PL_lex_encoding. Again for backwards compatibility,
+ * PL_encoding has precedence over PL_lex_encoding. The hints hash is used
+ * to determine if PL_lex_encoding is in scope, and hence valid. The hints
+ * hash only accepts simple values, so we can't put an Encode object into
+ * it, so we put the object into the global, and put a simple boolean into
+ * the hints hash giving whether the global is valid or not */
+
+ dVAR;
+ SV *is_encoding;
+
+ if (PL_encoding) {
+ return PL_encoding;
+ }
+
+ if (! PL_lex_encoding) {
+ return NULL;
+ }
- return PL_encoding;
+ is_encoding = cop_hints_fetch_pvs(PL_curcop, "encoding", 0);
+ if ( is_encoding
+ && is_encoding != &PL_sv_placeholder
+ && SvIOK(is_encoding)
+ && SvIV(is_encoding)) /* non-zero mean valid */
+ {
+ return PL_lex_encoding;
+ }
+
+ return NULL;
}
#ifdef VMS
if (nextchar != '\0') {
if (strEQ(remaining, "NCODING"))
sv_setsv(sv, _get_encoding());
+ else if (strEQ(remaining, "_NCODING"))
+ sv_setsv(sv, NULL);
break;
}
#else
dTHX;
#endif
+#if defined(HAS_SIGACTION) && defined(SA_SIGINFO)
#if defined(__cplusplus) && defined(__GNUC__)
/* g++ doesn't support PERL_UNUSED_DECL, so the sip and uap
* parameters would be warned about. */
PERL_UNUSED_ARG(sip);
PERL_UNUSED_ARG(uap);
#endif
+#endif
#ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS
(void) rsignal(sig, PL_csighandlerp);
if (PL_sig_ignoring[sig]) return;
SvREFCNT_inc_simple_NN(SvRV(sv)));
break;
case SVt_PVHV:
- hv_store_ent((HV *)mg->mg_obj, (SV *)mg->mg_ptr,
- SvREFCNT_inc_simple_NN(SvRV(sv)), 0);
+ (void)hv_store_ent((HV *)mg->mg_obj, (SV *)mg->mg_ptr,
+ SvREFCNT_inc_simple_NN(SvRV(sv)), 0);
}
if (mg->mg_flags & MGf_PERSIST)
NOOP; /* This sv is in use as an iterator var and will be reused,
# endif
#endif
}
- else if (strEQ(mg->mg_ptr+1, "NCODING")) {
- SvREFCNT_dec(PL_encoding);
- if (SvOK(sv) || SvGMAGICAL(sv)) {
- PL_encoding = newSVsv(sv);
- }
- else {
- PL_encoding = NULL;
- }
- }
+ else {
+ unsigned int offset = 1;
+ bool lex = FALSE;
+
+ /* It may be the shadow variable ${E_NCODING} which has lexical
+ * scope. See comments at Perl__get_encoding in this file */
+ if (*(mg->mg_ptr + 1) == '_') {
+ if (CopSTASH(PL_curcop) != get_hv("encoding::",0))
+ Perl_croak_no_modify();
+ lex = TRUE;
+ offset++;
+ }
+ if (strEQ(mg->mg_ptr + offset, "NCODING")) {
+ if (lex) { /* Use the shadow global */
+ SvREFCNT_dec(PL_lex_encoding);
+ if (SvOK(sv) || SvGMAGICAL(sv)) {
+ PL_lex_encoding = newSVsv(sv);
+ }
+ else {
+ PL_lex_encoding = NULL;
+ }
+ }
+ else { /* Use the regular global */
+ SvREFCNT_dec(PL_encoding);
+ if (SvOK(sv) || SvGMAGICAL(sv)) {
+ if (PL_localizing != 2) {
+ Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED),
+ "Setting ${^ENCODING} is deprecated");
+ }
+ PL_encoding = newSVsv(sv);
+ }
+ else {
+ PL_encoding = NULL;
+ }
+ }
+ }
+ }
break;
case '\006': /* ^F */
PL_maxsysfd = SvIV(sv);
https://perl5.git.perl.org / perl5.git / blobdiff