*s = '\0';
}
else if (SvNOKp(sv)) {
- const int olderrno = errno;
+ dSAVE_ERRNO;
if (SvTYPE(sv) < SVt_PVNV)
sv_upgrade(sv, SVt_PVNV);
/* The +20 is pure guesswork. Configure test needed. --jhi */
{
Gconvert(SvNVX(sv), NV_DIG, 0, s);
}
- errno = olderrno;
+ RESTORE_ERRNO;
#ifdef FIXNEGATIVEZERO
if (*s == '-' && s[1] == '0' && !s[2]) {
s[0] = '0';
Converts the PV of an SV to its UTF-8-encoded form.
Forces the SV to string form if it is not already.
+Will C<mg_get> on C<sv> if appropriate.
Always sets the SvUTF8 flag to avoid future validity checks even
-if all the bytes have hibit clear.
+if the whole string is the same in UTF-8 as not.
+Returns the number of bytes in the converted string
This is not as a general purpose byte encoding to Unicode interface:
use the Encode extension for that.
Converts the PV of an SV to its UTF-8-encoded form.
Forces the SV to string form if it is not already.
Always sets the SvUTF8 flag to avoid future validity checks even
-if all the bytes have hibit clear. If C<flags> has C<SV_GMAGIC> bit set,
-will C<mg_get> on C<sv> if appropriate, else not. C<sv_utf8_upgrade> and
+if all the bytes are invariant in UTF-8. If C<flags> has C<SV_GMAGIC> bit set,
+will C<mg_get> on C<sv> if appropriate, else not.
+Returns the number of bytes in the converted string
+C<sv_utf8_upgrade> and
C<sv_utf8_upgrade_nomg> are implemented in terms of this function.
This is not as a general purpose byte encoding to Unicode interface:
sv_recode_to_utf8(sv, PL_encoding);
else { /* Assume Latin-1/EBCDIC */
/* This function could be much more efficient if we
- * had a FLAG in SVs to signal if there are any hibit
+ * had a FLAG in SVs to signal if there are any variant
* chars in the PV. Given that there isn't such a flag
* make the loop as fast as possible. */
const U8 * const s = (U8 *) SvPVX_const(sv);
while (t < e) {
const U8 ch = *t++;
- /* Check for hi bit */
+ /* Check for variant */
if (!NATIVE_IS_INVARIANT(ch)) {
STRLEN len = SvCUR(sv);
/* *Currently* bytes_to_utf8() adds a '\0' after every string
break;
}
}
- /* Mark as UTF-8 even if no hibit - saves scanning loop */
+ /* Mark as UTF-8 even if no variant - saves scanning loop */
SvUTF8_on(sv);
}
return SvCUR(sv);
=for apidoc sv_utf8_downgrade
Attempts to convert the PV of an SV from characters to bytes.
-If the PV contains a character beyond byte, this conversion will fail;
+If the PV contains a character that cannot fit
+in a byte, this conversion will fail;
in this case, either returns false or, if C<fail_ok> is not
true, croaks.
else
TOPPTR(nss,ix) = NULL;
break;
- case SAVEt_FREEPV:
- c = (char*)POPPTR(ss,ix);
- TOPPTR(nss,ix) = pv_dup_inc(c);
- break;
case SAVEt_DELETE:
hv = (const HV *)POPPTR(ss,ix);
TOPPTR(nss,ix) = hv_dup_inc(hv, param);
+ i = POPINT(ss,ix);
+ TOPINT(nss,ix) = i;
+ /* Fall through */
+ case SAVEt_FREEPV:
c = (char*)POPPTR(ss,ix);
TOPPTR(nss,ix) = pv_dup_inc(c);
- /* fall through */
+ break;
case SAVEt_STACK_POS: /* Position on Perl stack */
i = POPINT(ss,ix);
TOPINT(nss,ix) = i;