/* Unicode support */
/*
-=for apidoc A|U8*|uv_to_utf8|U8 *d|UV uv
+=for apidoc A|U8*|uvuni_to_utf8|U8 *d|UV uv
Adds the UTF8 representation of the Unicode codepoint C<uv> to the end
of the string C<d>; C<d> should be have at least C<UTF8_MAXLEN+1> free
bytes available. The return value is the pointer to the byte after the
-end of the new character. In other words,
+end of the new character. In other words,
- d = uv_to_utf8(d, uv);
+ d = uvuni_to_utf8(d, uv);
is the recommended Unicode-aware way of saying
*/
U8 *
-Perl_uv_to_utf8(pTHX_ U8 *d, UV uv)
+Perl_uvuni_to_utf8(pTHX_ U8 *d, UV uv)
{
- if (uv < 0x80) {
- *d++ = uv;
+ if (UNI_IS_INVARIANT(uv)) {
+ *d++ = UTF_TO_NATIVE(uv);
return d;
}
+#if defined(EBCDIC) || 1 /* always for testing */
+ else {
+ STRLEN len = UNISKIP(uv);
+ U8 *p = d+len-1;
+ while (p > d) {
+ *p-- = UTF_TO_NATIVE((uv & UTF_CONTINUATION_MASK) | UTF_CONTINUATION_MARK);
+ uv >>= UTF_ACCUMULATION_SHIFT;
+ }
+ *p = UTF_TO_NATIVE((uv & UTF_START_MASK(len)) | UTF_START_MARK(len));
+ return d+len;
+ }
+#else /* Non loop style */
if (uv < 0x800) {
*d++ = (( uv >> 6) | 0xc0);
*d++ = (( uv & 0x3f) | 0x80);
return d;
}
#endif
+#endif /* Loop style */
}
/*
-=for apidoc A|STRLEN|is_utf8_char|U8 *s
+=for apidoc A|U8*|uvchr_to_utf8|U8 *d|UV uv
+
+Adds the UTF8 representation of the Native codepoint C<uv> to the end
+of the string C<d>; C<d> should be have at least C<UTF8_MAXLEN+1> free
+bytes available. The return value is the pointer to the byte after the
+end of the new character. In other words,
+
+ d = uvchr_to_utf8(d, uv);
+
+is the recommended wide native character-aware way of saying
+
+ *(d++) = uv;
-Tests if some arbitrary number of bytes begins in a valid UTF-8 character.
-The actual number of bytes in the UTF-8 character will be returned if it
-is valid, otherwise 0.
-
=cut
*/
+
+U8 *
+Perl_uvchr_to_utf8(pTHX_ U8 *d, UV uv)
+{
+ return Perl_uvuni_to_utf8(aTHX_ d, NATIVE_TO_UNI(uv));
+}
+
+
+/*
+=for apidoc A|STRLEN|is_utf8_char|U8 *s
+
+Tests if some arbitrary number of bytes begins in a valid UTF-8
+character. Note that an INVARIANT (i.e. ASCII) character is a valid UTF-8 character.
+The actual number of bytes in the UTF-8 character will be returned if
+it is valid, otherwise 0.
+
+=cut */
STRLEN
Perl_is_utf8_char(pTHX_ U8 *s)
{
STRLEN slen, len;
UV uv, ouv;
- if (UTF8_IS_ASCII(u))
+ if (UTF8_IS_INVARIANT(u))
return 1;
if (!UTF8_IS_START(u))
slen = len - 1;
s++;
- uv = u;
+ /* The initial value is dubious */
+ uv = u;
ouv = uv;
while (slen--) {
if (!UTF8_IS_CONTINUATION(*s))
/*
=for apidoc A|bool|is_utf8_string|U8 *s|STRLEN len
-Returns true if first C<len> bytes of the given string form valid a UTF8
-string, false otherwise.
+Returns true if first C<len> bytes of the given string form a valid UTF8
+string, false otherwise. Note that 'a valid UTF8 string' does not mean
+'a string that contains UTF8' because a valid ASCII string is a valid
+UTF8 string.
=cut
*/
}
/*
-=for apidoc A|U8* s|utf8_to_uv|STRLEN curlen|STRLEN *retlen|U32 flags
+=for apidoc A|UV|utf8n_to_uvuni|U8 *s|STRLEN curlen|STRLEN *retlen|U32 flags
-Returns the character value of the first character in the string C<s>
+Bottom level UTF-8 decode routine.
+Returns the unicode code point value of the first character in the string C<s>
which is assumed to be in UTF8 encoding and no longer than C<curlen>;
C<retlen> will be set to the length, in bytes, of that character.
The C<flags> can also contain various flags to allow deviations from
the strict UTF-8 encoding (see F<utf8.h>).
+Most code should use utf8_to_uvchr() rather than call this directly.
+
=cut */
UV
-Perl_utf8_to_uv(pTHX_ U8* s, STRLEN curlen, STRLEN* retlen, U32 flags)
+Perl_utf8n_to_uvuni(pTHX_ U8* s, STRLEN curlen, STRLEN* retlen, U32 flags)
{
UV uv = *s, ouv;
STRLEN len = 1;
-#ifdef EBCDIC
- bool dowarn = 0;
-#else
bool dowarn = ckWARN_d(WARN_UTF8);
-#endif
STRLEN expectlen = 0;
U32 warning = 0;
goto malformed;
}
- if (UTF8_IS_ASCII(uv)) {
+ if (UTF8_IS_INVARIANT(uv)) {
if (retlen)
*retlen = 1;
- return *s;
+ return (UV) (NATIVE_TO_UTF(*s));
}
if (UTF8_IS_CONTINUATION(uv) &&
warning = UTF8_WARN_NON_CONTINUATION;
goto malformed;
}
-
+
+#ifdef EBCDIC
+ uv = NATIVE_TO_UTF(uv);
+#else
if ((uv == 0xfe || uv == 0xff) &&
!(flags & UTF8_ALLOW_FE_FF)) {
warning = UTF8_WARN_FE_FF;
goto malformed;
}
-
+#endif
+
if (!(uv & 0x20)) { len = 2; uv &= 0x1f; }
else if (!(uv & 0x10)) { len = 3; uv &= 0x0f; }
else if (!(uv & 0x08)) { len = 4; uv &= 0x07; }
else if (!(uv & 0x04)) { len = 5; uv &= 0x03; }
+#ifdef EBCDIC
+ else if (!(uv & 0x02)) { len = 6; uv &= 0x01; }
+ else { len = 7; uv &= 0x01; }
+#else
else if (!(uv & 0x02)) { len = 6; uv &= 0x01; }
else if (!(uv & 0x01)) { len = 7; uv = 0; }
- else { len = 13; uv = 0; } /* whoa! */
-
+ else { len = 13; uv = 0; } /* whoa! */
+#endif
+
if (retlen)
*retlen = len;
-
+
expectlen = len;
if ((curlen < expectlen) &&
}
/*
-=for apidoc A|U8* s|utf8_to_uv_simple|STRLEN *retlen
+=for apidoc A|U8* s|utf8n_to_uvchr|STRLEN curlen, STRLEN *retlen, U32 flags
-Returns the character value of the first character in the string C<s>
+Returns the native character value of the first character in the string C<s>
which is assumed to be in UTF8 encoding; C<retlen> will be set to the
length, in bytes, of that character.
+Allows length and flags to be passed to low level routine.
+
+=cut
+*/
+
+UV
+Perl_utf8n_to_uvchr(pTHX_ U8* s, STRLEN curlen, STRLEN* retlen, U32 flags)
+{
+ UV uv = Perl_utf8n_to_uvuni(aTHX_ s, curlen, retlen, flags);
+ return UNI_TO_NATIVE(uv);
+}
+
+/*
+=for apidoc A|U8* s|utf8_to_uvchr|STRLEN *retlen
+
+Returns the native character value of the first character in the string C<s>
+which is assumed to be in UTF8 encoding; C<retlen> will be set to the
+length, in bytes, of that character.
+
+If C<s> does not point to a well-formed UTF8 character, zero is
+returned and retlen is set, if possible, to -1.
+
+=cut
+*/
+
+UV
+Perl_utf8_to_uvchr(pTHX_ U8* s, STRLEN* retlen)
+{
+ return Perl_utf8n_to_uvchr(aTHX_ s, UTF8_MAXLEN, retlen, 0);
+}
+
+/*
+=for apidoc A|U8* s|utf8_to_uvuni|STRLEN *retlen
+
+Returns the Unicode code point of the first character in the string C<s>
+which is assumed to be in UTF8 encoding; C<retlen> will be set to the
+length, in bytes, of that character.
+
+This function should only be used when returned UV is considered
+an index into the Unicode semantic tables (e.g. swashes).
+
If C<s> does not point to a well-formed UTF8 character, zero is
returned and retlen is set, if possible, to -1.
*/
UV
-Perl_utf8_to_uv_simple(pTHX_ U8* s, STRLEN* retlen)
+Perl_utf8_to_uvuni(pTHX_ U8* s, STRLEN* retlen)
{
- return Perl_utf8_to_uv(aTHX_ s, UTF8_MAXLEN, retlen, 0);
+ /* Call the low level routine asking for checks */
+ return Perl_utf8n_to_uvuni(aTHX_ s, UTF8_MAXLEN, retlen, 0);
}
/*
U8 t = UTF8SKIP(s);
if (e - s < t)
- Perl_croak(aTHX_ "panic: utf8_length: unaligned end");
+ Perl_croak(aTHX_ "panic: utf8_length: s=%p (%02X) e=%p l=%d - unaligned end",s,*s,e,t);
s += t;
len++;
}
for (send = s + *len; s < send; ) {
U8 c = *s++;
- if (c >= 0x80 &&
- ((s >= send) ||
- ((*s++ & 0xc0) != 0x80) || ((c & 0xfe) != 0xc2))) {
+ if (!UTF8_IS_INVARIANT(c) &&
+ (!UTF8_IS_DOWNGRADEABLE_START(c) || (s >= send)
+ || !(c = *s++) || !UTF8_IS_CONTINUATION(c))) {
*len = -1;
return 0;
}
d = s = save;
while (s < send) {
STRLEN ulen;
- *d++ = (U8)utf8_to_uv_simple(s, &ulen);
+ *d++ = (U8)utf8_to_uvchr(s, &ulen);
s += ulen;
}
*d = '\0';
U8 *
Perl_bytes_from_utf8(pTHX_ U8* s, STRLEN *len, bool *is_utf8)
{
- U8 *send;
U8 *d;
U8 *start = s;
+ U8 *send;
I32 count = 0;
if (!*is_utf8)
/* ensure valid UTF8 and chars < 256 before converting string */
for (send = s + *len; s < send;) {
U8 c = *s++;
- if (!UTF8_IS_ASCII(c)) {
- if (UTF8_IS_CONTINUATION(c) || s >= send ||
- !UTF8_IS_CONTINUATION(*s) || (c & 0xfc) != 0xc0)
+ if (!UTF8_IS_INVARIANT(c)) {
+ if (UTF8_IS_DOWNGRADEABLE_START(c) && s < send &&
+ (c = *s++) && UTF8_IS_CONTINUATION(c))
+ count++;
+ else
return start;
- s++, count++;
- }
+ }
}
*is_utf8 = 0;
- if (!count)
- return start;
-
Newz(801, d, (*len) - count + 1, U8);
s = start; start = d;
while (s < send) {
U8 c = *s++;
- if (UTF8_IS_ASCII(c))
- *d++ = c;
- else
- *d++ = UTF8_ACCUMULATE(c&3, *s++);
+ if (!UTF8_IS_INVARIANT(c)) {
+ /* Then it is two-byte encoded */
+ c = UTF8_ACCUMULATE(NATIVE_TO_UTF(c), *s++);
+ c = ASCII_TO_NATIVE(c);
+ }
+ *d++ = c;
}
*d = '\0';
*len = d - start;
dst = d;
while (s < send) {
- if (*s < 0x80)
- *d++ = *s++;
+ UV uv = NATIVE_TO_ASCII(*s++);
+ if (UNI_IS_INVARIANT(uv))
+ *d++ = UTF_TO_NATIVE(uv);
else {
- UV uv = *s++;
- *d++ = (( uv >> 6) | 0xc0);
- *d++ = (( uv & 0x3f) | 0x80);
+ *d++ = UTF8_EIGHT_BIT_HI(uv);
+ *d++ = UTF8_EIGHT_BIT_LO(uv);
}
}
*d = '\0';
Perl_is_uni_alnum(pTHX_ U32 c)
{
U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ uvuni_to_utf8(tmpbuf, (UV)c);
return is_utf8_alnum(tmpbuf);
}
Perl_is_uni_alnumc(pTHX_ U32 c)
{
U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ uvuni_to_utf8(tmpbuf, (UV)c);
return is_utf8_alnumc(tmpbuf);
}
Perl_is_uni_idfirst(pTHX_ U32 c)
{
U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ uvuni_to_utf8(tmpbuf, (UV)c);
return is_utf8_idfirst(tmpbuf);
}
Perl_is_uni_alpha(pTHX_ U32 c)
{
U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ uvuni_to_utf8(tmpbuf, (UV)c);
return is_utf8_alpha(tmpbuf);
}
Perl_is_uni_ascii(pTHX_ U32 c)
{
U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ uvuni_to_utf8(tmpbuf, (UV)c);
return is_utf8_ascii(tmpbuf);
}
Perl_is_uni_space(pTHX_ U32 c)
{
U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ uvuni_to_utf8(tmpbuf, (UV)c);
return is_utf8_space(tmpbuf);
}
Perl_is_uni_digit(pTHX_ U32 c)
{
U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ uvuni_to_utf8(tmpbuf, (UV)c);
return is_utf8_digit(tmpbuf);
}
Perl_is_uni_upper(pTHX_ U32 c)
{
U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ uvuni_to_utf8(tmpbuf, (UV)c);
return is_utf8_upper(tmpbuf);
}
Perl_is_uni_lower(pTHX_ U32 c)
{
U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ uvuni_to_utf8(tmpbuf, (UV)c);
return is_utf8_lower(tmpbuf);
}
Perl_is_uni_cntrl(pTHX_ U32 c)
{
U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ uvuni_to_utf8(tmpbuf, (UV)c);
return is_utf8_cntrl(tmpbuf);
}
Perl_is_uni_graph(pTHX_ U32 c)
{
U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ uvuni_to_utf8(tmpbuf, (UV)c);
return is_utf8_graph(tmpbuf);
}
Perl_is_uni_print(pTHX_ U32 c)
{
U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ uvuni_to_utf8(tmpbuf, (UV)c);
return is_utf8_print(tmpbuf);
}
Perl_is_uni_punct(pTHX_ U32 c)
{
U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ uvuni_to_utf8(tmpbuf, (UV)c);
return is_utf8_punct(tmpbuf);
}
Perl_is_uni_xdigit(pTHX_ U32 c)
{
U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ uvuni_to_utf8(tmpbuf, (UV)c);
return is_utf8_xdigit(tmpbuf);
}
Perl_to_uni_upper(pTHX_ U32 c)
{
U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ uvuni_to_utf8(tmpbuf, (UV)c);
return to_utf8_upper(tmpbuf);
}
Perl_to_uni_title(pTHX_ U32 c)
{
U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ uvuni_to_utf8(tmpbuf, (UV)c);
return to_utf8_title(tmpbuf);
}
Perl_to_uni_lower(pTHX_ U32 c)
{
U8 tmpbuf[UTF8_MAXLEN+1];
- uv_to_utf8(tmpbuf, (UV)c);
+ uvuni_to_utf8(tmpbuf, (UV)c);
return to_utf8_lower(tmpbuf);
}
if (!PL_utf8_toupper)
PL_utf8_toupper = swash_init("utf8", "ToUpper", &PL_sv_undef, 4, 0);
uv = swash_fetch(PL_utf8_toupper, p);
- return uv ? uv : utf8_to_uv(p,UTF8_MAXLEN,0,0);
+ return uv ? UNI_TO_NATIVE(uv) : utf8_to_uvchr(p,0);
}
UV
if (!PL_utf8_totitle)
PL_utf8_totitle = swash_init("utf8", "ToTitle", &PL_sv_undef, 4, 0);
uv = swash_fetch(PL_utf8_totitle, p);
- return uv ? uv : utf8_to_uv(p,UTF8_MAXLEN,0,0);
+ return uv ? UNI_TO_NATIVE(uv) : utf8_to_uvchr(p,0);
}
UV
if (!PL_utf8_tolower)
PL_utf8_tolower = swash_init("utf8", "ToLower", &PL_sv_undef, 4, 0);
uv = swash_fetch(PL_utf8_tolower, p);
- return uv ? uv : utf8_to_uv(p,UTF8_MAXLEN,0,0);
+ return uv ? UNI_TO_NATIVE(uv) : utf8_to_uvchr(p,0);
}
/* a "swash" is a swatch hash */
SV* retval;
SV* tokenbufsv = sv_2mortal(NEWSV(0,0));
dSP;
+ HV *stash = gv_stashpvn(pkg, strlen(pkg), FALSE);
- if (!gv_stashpv(pkg, 0)) { /* demand load utf8 */
+ if (!gv_fetchmeth(stash, "SWASHNEW", 8, -1)) { /* demand load utf8 */
ENTER;
Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, newSVpv(pkg,0), Nullsv);
LEAVE;
PUSHMARK(SP);
EXTEND(SP,3);
PUSHs((SV*)sv);
- PUSHs(sv_2mortal(newSViv(utf8_to_uv(ptr, UTF8_MAXLEN, 0, 0) & ~(needents - 1))));
+ /* We call utf8_to_uni as we want and index into Unicode tables,
+ not a native character number.
+ */
+ PUSHs(sv_2mortal(newSViv(utf8_to_uvuni(ptr, 0) & ~(needents - 1))));
PUSHs(sv_2mortal(newSViv(needents)));
PUTBACK;
if (call_method("SWASHGET", G_SCALAR))
projects / p5sagit/p5-mst-13.2.git / blobdiff