/* utf8.c
*
- * Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005 by Larry Wall and
- * others
+ * Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006,
+ * by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
=cut */
STATIC STRLEN
-S_is_utf8_char_slow(pTHX_ const U8 *s, const STRLEN len)
+S_is_utf8_char_slow(const U8 *s, const STRLEN len)
{
U8 u = *s;
STRLEN slen;
Perl_is_utf8_char(pTHX_ const U8 *s)
{
const STRLEN len = UTF8SKIP(s);
+ PERL_UNUSED_CONTEXT;
#ifdef IS_UTF8_CHAR
if (IS_UTF8_CHAR_FAST(len))
return IS_UTF8_CHAR(s, len) ? len : 0;
const U8* x = s;
const U8* send;
+ PERL_UNUSED_CONTEXT;
if (!len)
len = strlen((const char *)s);
send = s + len;
c = UTF8SKIP(x);
if (IS_UTF8_CHAR_FAST(c)) {
if (!IS_UTF8_CHAR(x, c))
- goto out;
- } else if (!is_utf8_char_slow(x, c))
- goto out;
+ c = 0;
+ }
+ else
+ c = is_utf8_char_slow(x, c);
#else
c = is_utf8_char(x);
#endif /* #ifdef IS_UTF8_CHAR */
const U8* x = s;
const U8* send;
STRLEN c;
+ PERL_UNUSED_CONTEXT;
if (!len)
len = strlen((const char *)s);
UV
Perl_utf8n_to_uvuni(pTHX_ const U8 *s, STRLEN curlen, STRLEN *retlen, U32 flags)
{
- const U8 *s0 = s;
+ dVAR;
+ const U8 * const s0 = s;
UV uv = *s, ouv = 0;
STRLEN len = 1;
const bool dowarn = ckWARN_d(WARN_UTF8);
}
if (dowarn) {
- SV* const sv = sv_2mortal(newSVpv("Malformed UTF-8 character ", 0));
+ SV* const sv = sv_2mortal(newSVpvs("Malformed UTF-8 character "));
switch (warning) {
case 0: /* Intentionally empty. */ break;
case UTF8_WARN_EMPTY:
- Perl_sv_catpv(aTHX_ sv, "(empty string)");
+ sv_catpvs(sv, "(empty string)");
break;
case UTF8_WARN_CONTINUATION:
Perl_sv_catpvf(aTHX_ sv, "(unexpected continuation byte 0x%02"UVxf", with no preceding start byte)", uv);
Perl_sv_catpvf(aTHX_ sv, "(character 0x%04"UVxf")", uv);
break;
default:
- Perl_sv_catpv(aTHX_ sv, "(unknown reason)");
+ sv_catpvs(sv, "(unknown reason)");
break;
}
UV
Perl_utf8_to_uvchr(pTHX_ const U8 *s, STRLEN *retlen)
{
- return Perl_utf8n_to_uvchr(aTHX_ s, UTF8_MAXBYTES, retlen,
- ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANY);
+ return utf8n_to_uvchr(s, UTF8_MAXBYTES, retlen,
+ ckWARN(WARN_UTF8) ? 0 : UTF8_ALLOW_ANY);
}
/*
STRLEN
Perl_utf8_length(pTHX_ const U8 *s, const U8 *e)
{
+ dVAR;
STRLEN len = 0;
/* Note: cannot use UTF8_IS_...() too eagerly here since e.g.
IV
Perl_utf8_distance(pTHX_ const U8 *a, const U8 *b)
{
- IV off = 0;
-
- /* Note: cannot use UTF8_IS_...() too eagerly here since e.g.
- * the bitops (especially ~) can create illegal UTF-8.
- * In other words: in Perl UTF-8 is not just for Unicode. */
-
- if (a < b) {
- while (a < b) {
- const U8 c = UTF8SKIP(a);
- if (b - a < c)
- goto warn_and_return;
- a += c;
- off--;
- }
- }
- else {
- while (b < a) {
- const U8 c = UTF8SKIP(b);
-
- if (a - b < c) {
- warn_and_return:
- if (ckWARN_d(WARN_UTF8)) {
- if (PL_op)
- Perl_warner(aTHX_ packWARN(WARN_UTF8),
- "%s in %s", unees, OP_DESC(PL_op));
- else
- Perl_warner(aTHX_ packWARN(WARN_UTF8), unees);
- }
- return off;
- }
- b += c;
- off++;
- }
- }
-
- return off;
+ return (a < b) ? -1 * (IV) utf8_length(a, b) : (IV) utf8_length(b, a);
}
/*
U8 *
Perl_utf8_hop(pTHX_ const U8 *s, I32 off)
{
+ PERL_UNUSED_CONTEXT;
/* Note: cannot use UTF8_IS_...() too eagerly here since e.g
* the bitops (especially ~) can create illegal UTF-8.
* In other words: in Perl UTF-8 is not just for Unicode. */
updates len to contain the new length.
Returns zero on failure, setting C<len> to -1.
+If you need a copy of the string, see C<bytes_from_utf8>.
+
=cut
*/
U8 *
Perl_utf8_to_bytes(pTHX_ U8 *s, STRLEN *len)
{
- U8 *send;
+ U8 * const save = s;
+ U8 * const send = s + *len;
U8 *d;
- U8 *save = s;
/* ensure valid UTF-8 and chars < 256 before updating string */
- for (send = s + *len; s < send; ) {
+ while (s < send) {
U8 c = *s++;
if (!UTF8_IS_INVARIANT(c) &&
const U8 *send;
I32 count = 0;
+ PERL_UNUSED_CONTEXT;
if (!*is_utf8)
return (U8 *)start;
*is_utf8 = 0;
- Newxz(d, (*len) - count + 1, U8);
+ Newx(d, (*len) - count + 1, U8);
s = start; start = d;
while (s < send) {
U8 c = *s++;
const U8 * const send = s + (*len);
U8 *d;
U8 *dst;
+ PERL_UNUSED_CONTEXT;
- Newxz(d, (*len) * 2 + 1, U8);
+ Newx(d, (*len) * 2 + 1, U8);
dst = d;
while (s < send) {
Perl_utf16_to_utf8_reversed(pTHX_ U8* p, U8* d, I32 bytelen, I32 *newlen)
{
U8* s = (U8*)p;
- U8* send = s + bytelen;
+ U8* const send = s + bytelen;
while (s < send) {
- U8 tmp = s[0];
+ const U8 tmp = s[0];
s[0] = s[1];
s[1] = tmp;
s += 2;
return (U32)to_uni_lower(c, tmpbuf, &len);
}
-bool
-S_is_utf8_common(pTHX_ const U8 const *p, SV **swash,
+static bool
+S_is_utf8_common(pTHX_ const U8 *const p, SV **swash,
const char *const swashname)
{
+ dVAR;
if (!is_utf8_char(p))
return FALSE;
if (!*swash)
- *swash = swash_init("utf8", swashname, &PL_sv_undef, 0, 0);
+ *swash = swash_init("utf8", swashname, &PL_sv_undef, 1, 0);
return swash_fetch(*swash, p, TRUE) != 0;
}
bool
Perl_is_utf8_alnum(pTHX_ const U8 *p)
{
- if (!is_utf8_char(p))
- return FALSE;
- if (!PL_utf8_alnum)
- /* NOTE: "IsWord", not "IsAlnum", since Alnum is a true
- * descendant of isalnum(3), in other words, it doesn't
- * contain the '_'. --jhi */
- PL_utf8_alnum = swash_init("utf8", "IsWord", &PL_sv_undef, 0, 0);
- return swash_fetch(PL_utf8_alnum, p, TRUE) != 0;
-/* return *p == '_' || is_utf8_alpha(p) || is_utf8_digit(p); */
-#ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */
- if (!PL_utf8_alnum)
- PL_utf8_alnum = swash_init("utf8", "",
- sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0);
- return swash_fetch(PL_utf8_alnum, p, TRUE) != 0;
-#endif
+ dVAR;
+ /* NOTE: "IsWord", not "IsAlnum", since Alnum is a true
+ * descendant of isalnum(3), in other words, it doesn't
+ * contain the '_'. --jhi */
+ return is_utf8_common(p, &PL_utf8_alnum, "IsWord");
}
bool
Perl_is_utf8_alnumc(pTHX_ const U8 *p)
{
- if (!is_utf8_char(p))
- return FALSE;
- if (!PL_utf8_alnum)
- PL_utf8_alnum = swash_init("utf8", "IsAlnumC", &PL_sv_undef, 0, 0);
- return swash_fetch(PL_utf8_alnum, p, TRUE) != 0;
-/* return is_utf8_alpha(p) || is_utf8_digit(p); */
-#ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */
- if (!PL_utf8_alnum)
- PL_utf8_alnum = swash_init("utf8", "",
- sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0);
- return swash_fetch(PL_utf8_alnum, p, TRUE) != 0;
-#endif
+ dVAR;
+ return is_utf8_common(p, &PL_utf8_alnumc, "IsAlnumC");
}
bool
Perl_is_utf8_idfirst(pTHX_ const U8 *p) /* The naming is historical. */
{
+ dVAR;
if (*p == '_')
return TRUE;
/* is_utf8_idstart would be more logical. */
- return S_is_utf8_common(aTHX_ p, &PL_utf8_idstart, "IdStart");
+ return is_utf8_common(p, &PL_utf8_idstart, "IdStart");
}
bool
Perl_is_utf8_idcont(pTHX_ const U8 *p)
{
+ dVAR;
if (*p == '_')
return TRUE;
- return S_is_utf8_common(aTHX_ p, &PL_utf8_idcont, "IdContinue");
+ return is_utf8_common(p, &PL_utf8_idcont, "IdContinue");
}
bool
Perl_is_utf8_alpha(pTHX_ const U8 *p)
{
- return S_is_utf8_common(aTHX_ p, &PL_utf8_alpha, "IsAlpha");
+ dVAR;
+ return is_utf8_common(p, &PL_utf8_alpha, "IsAlpha");
}
bool
Perl_is_utf8_ascii(pTHX_ const U8 *p)
{
- return S_is_utf8_common(aTHX_ p, &PL_utf8_ascii, "IsAscii");
+ dVAR;
+ return is_utf8_common(p, &PL_utf8_ascii, "IsAscii");
}
bool
Perl_is_utf8_space(pTHX_ const U8 *p)
{
- return S_is_utf8_common(aTHX_ p, &PL_utf8_space, "IsSpacePerl");
+ dVAR;
+ return is_utf8_common(p, &PL_utf8_space, "IsSpacePerl");
}
bool
Perl_is_utf8_digit(pTHX_ const U8 *p)
{
- return S_is_utf8_common(aTHX_ p, &PL_utf8_digit, "IsDigit");
+ dVAR;
+ return is_utf8_common(p, &PL_utf8_digit, "IsDigit");
}
bool
Perl_is_utf8_upper(pTHX_ const U8 *p)
{
- return S_is_utf8_common(aTHX_ p, &PL_utf8_upper, "IsUppercase");
+ dVAR;
+ return is_utf8_common(p, &PL_utf8_upper, "IsUppercase");
}
bool
Perl_is_utf8_lower(pTHX_ const U8 *p)
{
- return S_is_utf8_common(aTHX_ p, &PL_utf8_lower, "IsLowercase");
+ dVAR;
+ return is_utf8_common(p, &PL_utf8_lower, "IsLowercase");
}
bool
Perl_is_utf8_cntrl(pTHX_ const U8 *p)
{
- return S_is_utf8_common(aTHX_ p, &PL_utf8_cntrl, "IsCntrl");
+ dVAR;
+ return is_utf8_common(p, &PL_utf8_cntrl, "IsCntrl");
}
bool
Perl_is_utf8_graph(pTHX_ const U8 *p)
{
- return S_is_utf8_common(aTHX_ p, &PL_utf8_graph, "IsGraph");
+ dVAR;
+ return is_utf8_common(p, &PL_utf8_graph, "IsGraph");
}
bool
Perl_is_utf8_print(pTHX_ const U8 *p)
{
- return S_is_utf8_common(aTHX_ p, &PL_utf8_print, "IsPrint");
+ dVAR;
+ return is_utf8_common(p, &PL_utf8_print, "IsPrint");
}
bool
Perl_is_utf8_punct(pTHX_ const U8 *p)
{
- return S_is_utf8_common(aTHX_ p, &PL_utf8_punct, "IsPunct");
+ dVAR;
+ return is_utf8_common(p, &PL_utf8_punct, "IsPunct");
}
bool
Perl_is_utf8_xdigit(pTHX_ const U8 *p)
{
- return S_is_utf8_common(aTHX_ p, &PL_utf8_xdigit, "Isxdigit");
+ dVAR;
+ return is_utf8_common(p, &PL_utf8_xdigit, "Isxdigit");
}
bool
Perl_is_utf8_mark(pTHX_ const U8 *p)
{
- return S_is_utf8_common(aTHX_ p, &PL_utf8_mark, "IsM");
+ dVAR;
+ return is_utf8_common(p, &PL_utf8_mark, "IsM");
}
/*
The "swashp" is a pointer to the swash to use.
Both the special and normal mappings are stored lib/unicore/To/Foo.pl,
-and loaded by SWASHGET, using lib/utf8_heavy.pl. The special (usually,
+and loaded by SWASHNEW, using lib/utf8_heavy.pl. The special (usually,
but not always, a multicharacter mapping), is tried first.
The "special" is a string like "utf8::ToSpecLower", which means the
Perl_to_utf8_case(pTHX_ const U8 *p, U8* ustrp, STRLEN *lenp,
SV **swashp, const char *normal, const char *special)
{
+ dVAR;
U8 tmpbuf[UTF8_MAXBYTES_CASE+1];
STRLEN len = 0;
STRLEN tlen = 0;
while (t < tend) {
- UV c = utf8_to_uvchr(t, &tlen);
+ const UV c = utf8_to_uvchr(t, &tlen);
if (tlen > 0) {
d = uvchr_to_utf8(d, UNI_TO_NATIVE(c));
t += tlen;
}
if (!len && *swashp) {
- UV uv2 = swash_fetch(*swashp, tmpbuf, TRUE);
-
+ const UV uv2 = swash_fetch(*swashp, tmpbuf, TRUE);
+
if (uv2) {
/* It was "normal" (a single character mapping). */
- UV uv3 = UNI_TO_NATIVE(uv2);
-
+ const UV uv3 = UNI_TO_NATIVE(uv2);
len = uvchr_to_utf8(ustrp, uv3) - ustrp;
}
}
UV
Perl_to_utf8_upper(pTHX_ const U8 *p, U8* ustrp, STRLEN *lenp)
{
+ dVAR;
return Perl_to_utf8_case(aTHX_ p, ustrp, lenp,
&PL_utf8_toupper, "ToUpper", "utf8::ToSpecUpper");
}
UV
Perl_to_utf8_title(pTHX_ const U8 *p, U8* ustrp, STRLEN *lenp)
{
+ dVAR;
return Perl_to_utf8_case(aTHX_ p, ustrp, lenp,
&PL_utf8_totitle, "ToTitle", "utf8::ToSpecTitle");
}
UV
Perl_to_utf8_lower(pTHX_ const U8 *p, U8* ustrp, STRLEN *lenp)
{
+ dVAR;
return Perl_to_utf8_case(aTHX_ p, ustrp, lenp,
&PL_utf8_tolower, "ToLower", "utf8::ToSpecLower");
}
UV
Perl_to_utf8_fold(pTHX_ const U8 *p, U8* ustrp, STRLEN *lenp)
{
+ dVAR;
return Perl_to_utf8_case(aTHX_ p, ustrp, lenp,
&PL_utf8_tofold, "ToFold", "utf8::ToSpecFold");
}
-/* a "swash" is a swatch hash */
-
+/* Note:
+ * A "swash" is a swatch hash.
+ * A "swatch" is a bit vector generated by utf8.c:S_swash_get().
+ * C<pkg> is a pointer to a package name for SWASHNEW, should be "utf8".
+ * For other parameters, see utf8::SWASHNEW in lib/utf8_heavy.pl.
+ */
SV*
Perl_swash_init(pTHX_ const char* pkg, const char* name, SV *listsv, I32 minbits, I32 none)
{
if (!gv_fetchmeth(stash, "SWASHNEW", 8, -1)) { /* demand load utf8 */
ENTER;
errsv_save = newSVsv(ERRSV);
+ /* It is assumed that callers of this routine are not passing in any
+ user derived data. */
+ /* Need to do this after save_re_context() as it will set PL_tainted to
+ 1 while saving $1 etc (see the code after getrx: in Perl_magic_get).
+ Even line to create errsv_save can turn on PL_tainted. */
+ SAVEBOOL(PL_tainted);
+ PL_tainted = 0;
Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, newSVpvn(pkg,pkg_len),
- Nullsv);
+ NULL);
if (!SvTRUE(ERRSV))
sv_setsv(ERRSV, errsv_save);
SvREFCNT_dec(errsv_save);
const char* const pv = SvPV_const(tokenbufsv, len);
Copy(pv, PL_tokenbuf, len+1, char);
- PL_curcop->op_private = (U8)(PL_hints & HINT_PRIVATE_MASK);
+ CopHINTS_set(PL_curcop, PL_hints);
}
if (!SvROK(retval) || SvTYPE(SvRV(retval)) != SVt_PVHV) {
if (SvPOK(retval))
Perl_croak(aTHX_ "Can't find Unicode property definition \"%"SVf"\"",
- retval);
+ (void*)retval);
Perl_croak(aTHX_ "SWASHNEW didn't return an HV ref");
}
return retval;
* (see lib/unicore/SpecCase.txt) The SWASHGET in lib/utf8_heavy.pl is
* the lower-level routine, and it is similarly broken for returning
* multiple values. --jhi */
+/* Now SWASHGET is recasted into S_swash_get in this file. */
+
+/* Note:
+ * Returns the value of property/mapping C<swash> for the first character
+ * of the string C<ptr>. If C<do_utf8> is true, the string C<ptr> is
+ * assumed to be in utf8. If C<do_utf8> is false, the string C<ptr> is
+ * assumed to be in native 8-bit encoding. Caches the swatch in C<swash>.
+ */
UV
-Perl_swash_fetch(pTHX_ SV *sv, const U8 *ptr, bool do_utf8)
+Perl_swash_fetch(pTHX_ SV *swash, const U8 *ptr, bool do_utf8)
{
dVAR;
- HV* const hv = (HV*)SvRV(sv);
+ HV* const hv = (HV*)SvRV(swash);
U32 klen;
U32 off;
STRLEN slen;
STRLEN needents;
const U8 *tmps = NULL;
U32 bit;
- SV *retval;
+ SV *swatch;
U8 tmputf8[2];
UV c = NATIVE_TO_ASCII(*ptr);
if (!do_utf8 && !UNI_IS_INVARIANT(c)) {
- tmputf8[0] = (U8)UTF8_EIGHT_BIT_HI(c);
- tmputf8[1] = (U8)UTF8_EIGHT_BIT_LO(c);
- ptr = tmputf8;
+ tmputf8[0] = (U8)UTF8_EIGHT_BIT_HI(c);
+ tmputf8[1] = (U8)UTF8_EIGHT_BIT_LO(c);
+ ptr = tmputf8;
}
/* Given a UTF-X encoded char 0xAA..0xYY,0xZZ
* then the "swatch" is a vec() for al the chars which start
klen = UTF8SKIP(ptr) - 1;
off = ptr[klen];
- if (klen == 0)
- {
+ if (klen == 0) {
/* If char in invariant then swatch is for all the invariant chars
* In both UTF-8 and UTF-8-MOD that happens to be UTF_CONTINUATION_MARK
*/
- needents = UTF_CONTINUATION_MARK;
- off = NATIVE_TO_UTF(ptr[klen]);
- }
- else
- {
+ needents = UTF_CONTINUATION_MARK;
+ off = NATIVE_TO_UTF(ptr[klen]);
+ }
+ else {
/* If char is encoded then swatch is for the prefix */
- needents = (1 << UTF_ACCUMULATION_SHIFT);
- off = NATIVE_TO_UTF(ptr[klen]) & UTF_CONTINUATION_MASK;
- }
+ needents = (1 << UTF_ACCUMULATION_SHIFT);
+ off = NATIVE_TO_UTF(ptr[klen]) & UTF_CONTINUATION_MASK;
+ }
/*
* This single-entry cache saves about 1/3 of the utf8 overhead in test
/* Try our second-level swatch cache, kept in a hash. */
SV** svp = hv_fetch(hv, (const char*)ptr, klen, FALSE);
- /* If not cached, generate it via utf8::SWASHGET */
- if (!svp || !SvPOK(*svp) || !(tmps = (const U8*)SvPV_const(*svp, slen))) {
- dSP;
+ /* If not cached, generate it via swash_get */
+ if (!svp || !SvPOK(*svp)
+ || !(tmps = (const U8*)SvPV_const(*svp, slen))) {
/* We use utf8n_to_uvuni() as we want an index into
Unicode tables, not a native character number.
*/
const UV code_point = utf8n_to_uvuni(ptr, UTF8_MAXBYTES, 0,
ckWARN(WARN_UTF8) ?
0 : UTF8_ALLOW_ANY);
- SV *errsv_save;
- ENTER;
- SAVETMPS;
- save_re_context();
- PUSHSTACKi(PERLSI_MAGIC);
- PUSHMARK(SP);
- EXTEND(SP,3);
- PUSHs((SV*)sv);
- /* On EBCDIC & ~(0xA0-1) isn't a useful thing to do */
- PUSHs(sv_2mortal(newSViv((klen) ?
- (code_point & ~(needents - 1)) : 0)));
- PUSHs(sv_2mortal(newSViv(needents)));
- PUTBACK;
- errsv_save = newSVsv(ERRSV);
- if (call_method("SWASHGET", G_SCALAR))
- retval = newSVsv(*PL_stack_sp--);
- else
- retval = &PL_sv_undef;
- if (!SvTRUE(ERRSV))
- sv_setsv(ERRSV, errsv_save);
- SvREFCNT_dec(errsv_save);
- POPSTACK;
- FREETMPS;
- LEAVE;
+ swatch = swash_get(swash,
+ /* On EBCDIC & ~(0xA0-1) isn't a useful thing to do */
+ (klen) ? (code_point & ~(needents - 1)) : 0,
+ needents);
+
if (IN_PERL_COMPILETIME)
- PL_curcop->op_private = (U8)(PL_hints & HINT_PRIVATE_MASK);
+ CopHINTS_set(PL_curcop, PL_hints);
- svp = hv_store(hv, (const char *)ptr, klen, retval, 0);
+ svp = hv_store(hv, (const char *)ptr, klen, swatch, 0);
- if (!svp || !(tmps = (U8*)SvPV(*svp, slen)) || (slen << 3) < needents)
- Perl_croak(aTHX_ "SWASHGET didn't return result of proper length");
+ if (!svp || !(tmps = (U8*)SvPV(*svp, slen))
+ || (slen << 3) < needents)
+ Perl_croak(aTHX_ "panic: swash_fetch got improper swatch");
}
PL_last_swash_hv = hv;
off <<= 2;
return (tmps[off] << 24) + (tmps[off+1] << 16) + (tmps[off+2] << 8) + tmps[off + 3] ;
}
- Perl_croak(aTHX_ "panic: swash_fetch");
- return 0;
+ Perl_croak(aTHX_ "panic: swash_fetch got swatch of unexpected bit width");
+}
+
+/* Note:
+ * Returns a swatch (a bit vector string) for a code point sequence
+ * that starts from the value C<start> and comprises the number C<span>.
+ * A C<swash> must be an object created by SWASHNEW (see lib/utf8_heavy.pl).
+ * Should be used via swash_fetch, which will cache the swatch in C<swash>.
+ */
+STATIC SV*
+S_swash_get(pTHX_ SV* swash, UV start, UV span)
+{
+ SV *swatch;
+ U8 *l, *lend, *x, *xend, *s;
+ STRLEN lcur, xcur, scur;
+
+ HV* const hv = (HV*)SvRV(swash);
+ SV** const listsvp = hv_fetchs(hv, "LIST", FALSE);
+ SV** const typesvp = hv_fetchs(hv, "TYPE", FALSE);
+ SV** const bitssvp = hv_fetchs(hv, "BITS", FALSE);
+ SV** const nonesvp = hv_fetchs(hv, "NONE", FALSE);
+ SV** const extssvp = hv_fetchs(hv, "EXTRAS", FALSE);
+ const U8* const typestr = (U8*)SvPV_nolen(*typesvp);
+ const int typeto = typestr[0] == 'T' && typestr[1] == 'o';
+ const STRLEN bits = SvUV(*bitssvp);
+ const STRLEN octets = bits >> 3; /* if bits == 1, then octets == 0 */
+ const UV none = SvUV(*nonesvp);
+ const UV end = start + span;
+
+ if (bits != 1 && bits != 8 && bits != 16 && bits != 32) {
+ Perl_croak(aTHX_ "panic: swash_get doesn't expect bits %"UVuf,
+ (UV)bits);
+ }
+
+ /* create and initialize $swatch */
+ swatch = newSVpvs("");
+ scur = octets ? (span * octets) : (span + 7) / 8;
+ SvGROW(swatch, scur + 1);
+ s = (U8*)SvPVX(swatch);
+ if (octets && none) {
+ const U8* const e = s + scur;
+ while (s < e) {
+ if (bits == 8)
+ *s++ = (U8)(none & 0xff);
+ else if (bits == 16) {
+ *s++ = (U8)((none >> 8) & 0xff);
+ *s++ = (U8)( none & 0xff);
+ }
+ else if (bits == 32) {
+ *s++ = (U8)((none >> 24) & 0xff);
+ *s++ = (U8)((none >> 16) & 0xff);
+ *s++ = (U8)((none >> 8) & 0xff);
+ *s++ = (U8)( none & 0xff);
+ }
+ }
+ *s = '\0';
+ }
+ else {
+ (void)memzero((U8*)s, scur + 1);
+ }
+ SvCUR_set(swatch, scur);
+ s = (U8*)SvPVX(swatch);
+
+ /* read $swash->{LIST} */
+ l = (U8*)SvPV(*listsvp, lcur);
+ lend = l + lcur;
+ while (l < lend) {
+ UV min, max, val, key;
+ STRLEN numlen;
+ I32 flags = PERL_SCAN_SILENT_ILLDIGIT | PERL_SCAN_DISALLOW_PREFIX;
+
+ U8* const nl = (U8*)memchr(l, '\n', lend - l);
+
+ numlen = lend - l;
+ min = grok_hex((char *)l, &numlen, &flags, NULL);
+ if (numlen)
+ l += numlen;
+ else if (nl) {
+ l = nl + 1; /* 1 is length of "\n" */
+ continue;
+ }
+ else {
+ l = lend; /* to LIST's end at which \n is not found */
+ break;
+ }
+
+ if (isBLANK(*l)) {
+ ++l;
+ flags = PERL_SCAN_SILENT_ILLDIGIT | PERL_SCAN_DISALLOW_PREFIX;
+ numlen = lend - l;
+ max = grok_hex((char *)l, &numlen, &flags, NULL);
+ if (numlen)
+ l += numlen;
+ else
+ max = min;
+
+ if (octets) {
+ if (isBLANK(*l)) {
+ ++l;
+ flags = PERL_SCAN_SILENT_ILLDIGIT |
+ PERL_SCAN_DISALLOW_PREFIX;
+ numlen = lend - l;
+ val = grok_hex((char *)l, &numlen, &flags, NULL);
+ if (numlen)
+ l += numlen;
+ else
+ val = 0;
+ }
+ else {
+ val = 0;
+ if (typeto) {
+ Perl_croak(aTHX_ "%s: illegal mapping '%s'",
+ typestr, l);
+ }
+ }
+ }
+ else
+ val = 0; /* bits == 1, then val should be ignored */
+ }
+ else {
+ max = min;
+ if (octets) {
+ val = 0;
+ if (typeto) {
+ Perl_croak(aTHX_ "%s: illegal mapping '%s'", typestr, l);
+ }
+ }
+ else
+ val = 0; /* bits == 1, then val should be ignored */
+ }
+
+ if (nl)
+ l = nl + 1;
+ else
+ l = lend;
+
+ if (max < start)
+ continue;
+
+ if (octets) {
+ if (min < start) {
+ if (!none || val < none) {
+ val += start - min;
+ }
+ min = start;
+ }
+ for (key = min; key <= max; key++) {
+ STRLEN offset;
+ if (key >= end)
+ goto go_out_list;
+ /* offset must be non-negative (start <= min <= key < end) */
+ offset = octets * (key - start);
+ if (bits == 8)
+ s[offset] = (U8)(val & 0xff);
+ else if (bits == 16) {
+ s[offset ] = (U8)((val >> 8) & 0xff);
+ s[offset + 1] = (U8)( val & 0xff);
+ }
+ else if (bits == 32) {
+ s[offset ] = (U8)((val >> 24) & 0xff);
+ s[offset + 1] = (U8)((val >> 16) & 0xff);
+ s[offset + 2] = (U8)((val >> 8) & 0xff);
+ s[offset + 3] = (U8)( val & 0xff);
+ }
+
+ if (!none || val < none)
+ ++val;
+ }
+ }
+ else { /* bits == 1, then val should be ignored */
+ if (min < start)
+ min = start;
+ for (key = min; key <= max; key++) {
+ const STRLEN offset = (STRLEN)(key - start);
+ if (key >= end)
+ goto go_out_list;
+ s[offset >> 3] |= 1 << (offset & 7);
+ }
+ }
+ } /* while */
+ go_out_list:
+
+ /* read $swash->{EXTRAS} */
+ x = (U8*)SvPV(*extssvp, xcur);
+ xend = x + xcur;
+ while (x < xend) {
+ STRLEN namelen;
+ U8 *namestr;
+ SV** othersvp;
+ HV* otherhv;
+ STRLEN otherbits;
+ SV **otherbitssvp, *other;
+ U8 *s, *o, *nl;
+ STRLEN slen, olen;
+
+ U8 opc = *x++;
+ if (opc == '\n')
+ continue;
+
+ nl = (U8*)memchr(x, '\n', xend - x);
+
+ if (opc != '-' && opc != '+' && opc != '!' && opc != '&') {
+ if (nl) {
+ x = nl + 1; /* 1 is length of "\n" */
+ continue;
+ }
+ else {
+ x = xend; /* to EXTRAS' end at which \n is not found */
+ break;
+ }
+ }
+
+ namestr = x;
+ if (nl) {
+ namelen = nl - namestr;
+ x = nl + 1;
+ }
+ else {
+ namelen = xend - namestr;
+ x = xend;
+ }
+
+ othersvp = hv_fetch(hv, (char *)namestr, namelen, FALSE);
+ otherhv = (HV*)SvRV(*othersvp);
+ otherbitssvp = hv_fetchs(otherhv, "BITS", FALSE);
+ otherbits = (STRLEN)SvUV(*otherbitssvp);
+ if (bits < otherbits)
+ Perl_croak(aTHX_ "panic: swash_get found swatch size mismatch");
+
+ /* The "other" swatch must be destroyed after. */
+ other = swash_get(*othersvp, start, span);
+ o = (U8*)SvPV(other, olen);
+
+ if (!olen)
+ Perl_croak(aTHX_ "panic: swash_get got improper swatch");
+
+ s = (U8*)SvPV(swatch, slen);
+ if (bits == 1 && otherbits == 1) {
+ if (slen != olen)
+ Perl_croak(aTHX_ "panic: swash_get found swatch length mismatch");
+
+ switch (opc) {
+ case '+':
+ while (slen--)
+ *s++ |= *o++;
+ break;
+ case '!':
+ while (slen--)
+ *s++ |= ~*o++;
+ break;
+ case '-':
+ while (slen--)
+ *s++ &= ~*o++;
+ break;
+ case '&':
+ while (slen--)
+ *s++ &= *o++;
+ break;
+ default:
+ break;
+ }
+ }
+ else {
+ STRLEN otheroctets = otherbits >> 3;
+ STRLEN offset = 0;
+ U8* send = s + slen;
+
+ while (s < send) {
+ UV otherval = 0;
+
+ if (otherbits == 1) {
+ otherval = (o[offset >> 3] >> (offset & 7)) & 1;
+ ++offset;
+ }
+ else {
+ STRLEN vlen = otheroctets;
+ otherval = *o++;
+ while (--vlen) {
+ otherval <<= 8;
+ otherval |= *o++;
+ }
+ }
+
+ if (opc == '+' && otherval)
+ NOOP; /* replace with otherval */
+ else if (opc == '!' && !otherval)
+ otherval = 1;
+ else if (opc == '-' && otherval)
+ otherval = 0;
+ else if (opc == '&' && !otherval)
+ otherval = 0;
+ else {
+ s += octets; /* no replacement */
+ continue;
+ }
+
+ if (bits == 8)
+ *s++ = (U8)( otherval & 0xff);
+ else if (bits == 16) {
+ *s++ = (U8)((otherval >> 8) & 0xff);
+ *s++ = (U8)( otherval & 0xff);
+ }
+ else if (bits == 32) {
+ *s++ = (U8)((otherval >> 24) & 0xff);
+ *s++ = (U8)((otherval >> 16) & 0xff);
+ *s++ = (U8)((otherval >> 8) & 0xff);
+ *s++ = (U8)( otherval & 0xff);
+ }
+ }
+ }
+ sv_free(other); /* through with it! */
+ } /* while */
+ return swatch;
+}
+
+/*
+=for apidoc A|U8 *|uvchr_to_utf8|U8 *d|UV uv
+
+Adds the UTF-8 representation of the Native codepoint C<uv> to the end
+of the string C<d>; C<d> should be have at least C<UTF8_MAXBYTES+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;
+
+=cut
+*/
+
+/* On ASCII machines this is normally a macro but we want a
+ real function in case XS code wants it
+*/
+U8 *
+Perl_uvchr_to_utf8(pTHX_ U8 *d, UV uv)
+{
+ return Perl_uvuni_to_utf8_flags(aTHX_ d, NATIVE_TO_UNI(uv), 0);
}
U8 *
}
/*
+=for apidoc A|UV|utf8n_to_uvchr|U8 *s|STRLEN curlen|STRLEN *retlen|U32
+flags
+
+Returns the native character value of the first character in the string
+C<s>
+which is assumed to be in UTF-8 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
+*/
+/* On ASCII machines this is normally a macro but we want
+ a real function in case XS code wants it
+*/
+UV
+Perl_utf8n_to_uvchr(pTHX_ const U8 *s, STRLEN curlen, STRLEN *retlen,
+U32 flags)
+{
+ const UV uv = Perl_utf8n_to_uvuni(aTHX_ s, curlen, retlen, flags);
+ return UNI_TO_NATIVE(uv);
+}
+
+/*
=for apidoc A|char *|pv_uni_display|SV *dsv|U8 *spv|STRLEN len|STRLEN pvlim|UV flags
Build to the scalar dsv a displayable version of the string spv,
u = utf8_to_uvchr((U8*)s, 0);
if (u < 256) {
const unsigned char c = (unsigned char)u & 0xFF;
- if (!ok && (flags & UNI_DISPLAY_BACKSLASH)) {
+ if (flags & UNI_DISPLAY_BACKSLASH) {
switch (c) {
case '\n':
ok = 'n'; break;
Perl_sv_catpvf(aTHX_ dsv, "\\x{%"UVxf"}", u);
}
if (truncated)
- sv_catpvn(dsv, "...", 3);
+ sv_catpvs(dsv, "...");
return SvPVX(dsv);
}
The pointer to the PV of the dsv is returned.
-=cut */
+=cut
+*/
char *
Perl_sv_uni_display(pTHX_ SV *dsv, SV *ssv, STRLEN pvlim, UV flags)
{
I32
Perl_ibcmp_utf8(pTHX_ const char *s1, char **pe1, register UV l1, bool u1, const char *s2, char **pe2, register UV l2, bool u2)
{
+ dVAR;
register const U8 *p1 = (const U8*)s1;
register const U8 *p2 = (const U8*)s2;
- register const U8 *f1 = 0, *f2 = 0;
- register U8 *e1 = 0, *q1 = 0;
- register U8 *e2 = 0, *q2 = 0;
+ register const U8 *f1 = NULL;
+ register const U8 *f2 = NULL;
+ register U8 *e1 = NULL;
+ register U8 *q1 = NULL;
+ register U8 *e2 = NULL;
+ register U8 *q2 = NULL;
STRLEN n1 = 0, n2 = 0;
U8 foldbuf1[UTF8_MAXBYTES_CASE+1];
U8 foldbuf2[UTF8_MAXBYTES_CASE+1];