use and those yet to be assigned, are never considered malformed and never
warn.
+=for apidoc Amnh||UTF8_CHECK_ONLY
+=for apidoc Amnh||UTF8_DISALLOW_ILLEGAL_INTERCHANGE
+=for apidoc Amnh||UTF8_DISALLOW_ILLEGAL_C9_INTERCHANGE
+=for apidoc Amnh||UTF8_DISALLOW_SURROGATE
+=for apidoc Amnh||UTF8_DISALLOW_NONCHAR
+=for apidoc Amnh||UTF8_DISALLOW_SUPER
+=for apidoc Amnh||UTF8_WARN_ILLEGAL_INTERCHANGE
+=for apidoc Amnh||UTF8_WARN_ILLEGAL_C9_INTERCHANGE
+=for apidoc Amnh||UTF8_WARN_SURROGATE
+=for apidoc Amnh||UTF8_WARN_NONCHAR
+=for apidoc Amnh||UTF8_WARN_SUPER
+=for apidoc Amnh||UTF8_WARN_PERL_EXTENDED
+=for apidoc Amnh||UTF8_DISALLOW_PERL_EXTENDED
+
=cut
Also implemented as a macro in utf8.h
}
while (possible_problems) { /* Handle each possible problem */
- UV pack_warn = 0;
+ U32 pack_warn = 0;
char * message = NULL;
U32 this_flag_bit = 0;
* valid, avoid as much as possible reading past the
* end of the buffer */
int printlen = (flags & _UTF8_NO_CONFIDENCE_IN_CURLEN)
- ? s - s0
- : send - s0;
+ ? (int) (s - s0)
+ : (int) (send - s0);
pack_warn = packWARN(WARN_UTF8);
message = Perl_form(aTHX_ "%s",
unexpected_non_continuation_text(s0,
}
/*
-No = here because currently externally undocumented
-for apidoc bytes_from_utf8_loc
+=for comment
+skip apidoc
+This is not currently externally documented because we don't want people to use
+it for now. XXX Perhaps that is too paranoid, and it should be documented?
+
+=for apidoc bytes_from_utf8_loc
Like C<L</bytes_from_utf8>()>, but takes an extra parameter, a pointer to where
to store the location of the first character in C<"s"> that cannot be
* Do not use in-place. We optimize for native, for obvious reasons. */
U8*
-Perl_utf16_to_utf8(pTHX_ U8* p, U8* d, I32 bytelen, I32 *newlen)
+Perl_utf16_to_utf8(pTHX_ U8* p, U8* d, Size_t bytelen, Size_t *newlen)
{
U8* pend;
U8* dstart = d;
/* This assumes that most uses will be in the first Unicode plane, not
* needing surrogates */
- if (UNLIKELY(uv >= UNICODE_SURROGATE_FIRST
- && uv <= UNICODE_SURROGATE_LAST))
+ if (UNLIKELY(inRANGE(uv, UNICODE_SURROGATE_FIRST,
+ UNICODE_SURROGATE_LAST)))
{
if (UNLIKELY(p >= pend) || UNLIKELY(uv > LAST_HIGH_SURROGATE)) {
Perl_croak(aTHX_ "Malformed UTF-16 surrogate");
}
else {
UV low = (p[0] << 8) + p[1];
- if ( UNLIKELY(low < FIRST_LOW_SURROGATE)
- || UNLIKELY(low > LAST_LOW_SURROGATE))
+ if (UNLIKELY(! inRANGE(low, FIRST_LOW_SURROGATE,
+ LAST_LOW_SURROGATE)))
{
Perl_croak(aTHX_ "Malformed UTF-16 surrogate");
}
/* Note: this one is slightly destructive of the source. */
U8*
-Perl_utf16_to_utf8_reversed(pTHX_ U8* p, U8* d, I32 bytelen, I32 *newlen)
+Perl_utf16_to_utf8_reversed(pTHX_ U8* p, U8* d, Size_t bytelen, Size_t *newlen)
{
U8* s = (U8*)p;
U8* const send = s + bytelen;
bool
Perl__is_utf8_FOO(pTHX_ const U8 classnum, const U8 *p, const U8 * const e)
{
+ dVAR;
PERL_ARGS_ASSERT__IS_UTF8_FOO;
return is_utf8_common(p, e, PL_XPosix_ptrs[classnum]);
bool
Perl__is_utf8_perl_idstart(pTHX_ const U8 *p, const U8 * const e)
{
+ dVAR;
PERL_ARGS_ASSERT__IS_UTF8_PERL_IDSTART;
return is_utf8_common(p, e, PL_utf8_perl_idstart);
bool
Perl__is_utf8_perl_idcont(pTHX_ const U8 *p, const U8 * const e)
{
+ dVAR;
PERL_ARGS_ASSERT__IS_UTF8_PERL_IDCONT;
return is_utf8_common(p, e, PL_utf8_perl_idcont);
STATIC UV
S__to_utf8_case(pTHX_ const UV uv1, const U8 *p,
U8* ustrp, STRLEN *lenp,
- SV *invlist, const int * const invmap,
- const unsigned int * const * const aux_tables,
+ SV *invlist, const I32 * const invmap,
+ const U32 * const * const aux_tables,
const U8 * const aux_table_lengths,
const char * const normal)
{
> HIGHEST_CASE_CHANGING_CP_FOR_USE_ONLY_BY_UTF8_DOT_C))
{
- /* As of Unicode 10.0, this means we avoid swash creation
- * for anything beyond high Plane 1 (below emojis) */
goto cases_to_self;
}
#endif
{
unsigned int i;
- const unsigned int * cp_list;
+ const U32 * cp_list;
U8 * d;
/* 'index' is guaranteed to be non-negative, as this is an inversion
* map that covers all possible inputs. See [perl #133365] */
SSize_t index = _invlist_search(invlist, uv1);
- IV base = invmap[index];
+ I32 base = invmap[index];
/* The data structures are set up so that if 'base' is non-negative,
* the case change is 1-to-1; and if 0, the change is to itself */
}
Size_t
-Perl__inverse_folds(pTHX_ const UV cp, unsigned int * first_folds_to,
- const unsigned int ** remaining_folds_to)
+Perl__inverse_folds(pTHX_ const UV cp, U32 * first_folds_to,
+ const U32 ** remaining_folds_to)
{
/* Returns the count of the number of code points that fold to the input
* 'cp' (besides itself).
* The reason for this convolution is to avoid having to deal with
* allocating and freeing memory. The lists are already constructed, so
* the return can point to them, but single code points aren't, so would
- * need to be constructed if we didn't employ something like this API */
+ * need to be constructed if we didn't employ something like this API
+ *
+ * The code points returned by this function are all legal Unicode, which
+ * occupy at most 21 bits, and so a U32 is sufficient, and the lists are
+ * constructed with this size (to save space and memory), and we return
+ * pointers, so they must be this size */
dVAR;
/* 'index' is guaranteed to be non-negative, as this is an inversion map
* that covers all possible inputs. See [perl #133365] */
SSize_t index = _invlist_search(PL_utf8_foldclosures, cp);
- int base = _Perl_IVCF_invmap[index];
+ I32 base = _Perl_IVCF_invmap[index];
PERL_ARGS_ASSERT__INVERSE_FOLDS;
* to 'cp', and the parallel array containing the length of the list
* array */
*first_folds_to = IVCF_AUX_TABLE_ptrs[-base][0];
- *remaining_folds_to = IVCF_AUX_TABLE_ptrs[-base] + 1; /* +1 excludes
- *first_folds_to
- */
+ *remaining_folds_to = IVCF_AUX_TABLE_ptrs[-base] + 1;
+ /* +1 excludes first_folds_to */
return IVCF_AUX_TABLE_lengths[-base];
}
#endif
/* Only the single code point. This works like 'fc(G) = G - A + a' */
- *first_folds_to = base + cp - invlist_array(PL_utf8_foldclosures)[index];
+ *first_folds_to = (U32) (base + cp
+ - invlist_array(PL_utf8_foldclosures)[index]);
*remaining_folds_to = NULL;
return 1;
}
/* Look at every character in the result; if any cross the
* boundary, the whole thing is disallowed */
U8* s = ustrp;
- U8* e = ustrp + *lenp;
- while (s < e) {
+ U8* send = ustrp + *lenp;
+ while (s < send) {
if (isASCII(*s)) {
/* Crossed, have to return the original */
original = valid_utf8_to_uvchr(p, lenp);
}
-/* Note:
- * Returns a "swash" which is a hash described in utf8.c:Perl_swash_fetch().
- * 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)
-{
- /* Returns a copy of a swash initiated by the called function. This is the
- * public interface, and returning a copy prevents others from doing
- * mischief on the original. The only remaining use of this is in tr/// */
-
- /*NOTE NOTE NOTE - If you want to use "return" in this routine you MUST
- * use the following define */
-
-#define SWASH_INIT_RETURN(x) \
- PL_curpm= old_PL_curpm; \
- return newSVsv(x)
-
- /* Initialize and return a swash, creating it if necessary. It does this
- * by calling utf8_heavy.pl in the general case.
- *
- * pkg is the name of the package that <name> should be in.
- * name is the name of the swash to find.
- * listsv is a string to initialize the swash with. It must be of the form
- * documented as the subroutine return value in
- * L<perlunicode/User-Defined Character Properties>
- * minbits is the number of bits required to represent each data element.
- * none I (khw) do not understand this one, but it is used only in tr///.
- *
- * Thus there are two possible inputs to find the swash: <name> and
- * <listsv>. At least one must be specified. The result
- * will be the union of the specified ones, although <listsv>'s various
- * actions can intersect, etc. what <name> gives. To avoid going out to
- * disk at all, <invlist> should specify completely what the swash should
- * have, and <listsv> should be &PL_sv_undef and <name> should be "".
- */
-
- PMOP *old_PL_curpm= PL_curpm; /* save away the old PL_curpm */
-
- SV* retval = &PL_sv_undef;
-
- PERL_ARGS_ASSERT_SWASH_INIT;
-
- assert(listsv != &PL_sv_undef || strNE(name, ""));
-
- PL_curpm= NULL; /* reset PL_curpm so that we dont get confused between the
- regex that triggered the swash init and the swash init
- perl logic itself. See perl #122747 */
-
- /* If data was passed in to go out to utf8_heavy to find the swash of, do
- * so */
- if (listsv != &PL_sv_undef || strNE(name, "")) {
- dSP;
- const size_t pkg_len = strlen(pkg);
- const size_t name_len = strlen(name);
- HV * const stash = gv_stashpvn(pkg, pkg_len, 0);
- SV* errsv_save;
- GV *method;
-
-
- PUSHSTACKi(PERLSI_MAGIC);
- ENTER;
- SAVEHINTS();
- save_re_context();
- /* We might get here via a subroutine signature which uses a utf8
- * parameter name, at which point PL_subname will have been set
- * but not yet used. */
- save_item(PL_subname);
- if (PL_parser && PL_parser->error_count)
- SAVEI8(PL_parser->error_count), PL_parser->error_count = 0;
- method = gv_fetchmeth(stash, "SWASHNEW", 8, -1);
- if (!method) { /* demand load UTF-8 */
- ENTER;
- if ((errsv_save = GvSV(PL_errgv))) SAVEFREESV(errsv_save);
- GvSV(PL_errgv) = NULL;
-#ifndef NO_TAINT_SUPPORT
- /* 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(TAINT_get);
- TAINT_NOT;
-#endif
- require_pv("utf8_heavy.pl");
- {
- /* Not ERRSV, as there is no need to vivify a scalar we are
- about to discard. */
- SV * const errsv = GvSV(PL_errgv);
- if (!SvTRUE(errsv)) {
- GvSV(PL_errgv) = SvREFCNT_inc_simple(errsv_save);
- SvREFCNT_dec(errsv);
- }
- }
- LEAVE;
- }
- SPAGAIN;
- PUSHMARK(SP);
- EXTEND(SP,5);
- mPUSHp(pkg, pkg_len);
- mPUSHp(name, name_len);
- PUSHs(listsv);
- mPUSHi(minbits);
- mPUSHi(none);
- PUTBACK;
- if ((errsv_save = GvSV(PL_errgv))) SAVEFREESV(errsv_save);
- GvSV(PL_errgv) = NULL;
- /* If we already have a pointer to the method, no need to use
- * call_method() to repeat the lookup. */
- if (method
- ? call_sv(MUTABLE_SV(method), G_SCALAR)
- : call_sv(newSVpvs_flags("SWASHNEW", SVs_TEMP), G_SCALAR | G_METHOD))
- {
- retval = *PL_stack_sp--;
- SvREFCNT_inc(retval);
- }
- {
- /* Not ERRSV. See above. */
- SV * const errsv = GvSV(PL_errgv);
- if (!SvTRUE(errsv)) {
- GvSV(PL_errgv) = SvREFCNT_inc_simple(errsv_save);
- SvREFCNT_dec(errsv);
- }
- }
- LEAVE;
- POPSTACK;
- if (IN_PERL_COMPILETIME) {
- CopHINTS_set(PL_curcop, PL_hints);
- }
- } /* End of calling the module to find the swash */
-
- SWASH_INIT_RETURN(retval);
-#undef SWASH_INIT_RETURN
-}
-
-
-/* This API is wrong for special case conversions since we may need to
- * return several Unicode characters for a single Unicode character
- * (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
- * For those, you should use S__to_utf8_case() instead */
-/* Now SWASHGET is recasted into S_swatch_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 well-formed UTF-8. 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>.
- *
- * A "swash" is a hash which contains initially the keys/values set up by
- * SWASHNEW. The purpose is to be able to completely represent a Unicode
- * property for all possible code points. Things are stored in a compact form
- * (see utf8_heavy.pl) so that calculation is required to find the actual
- * property value for a given code point. As code points are looked up, new
- * key/value pairs are added to the hash, so that the calculation doesn't have
- * to ever be re-done. Further, each calculation is done, not just for the
- * desired one, but for a whole block of code points adjacent to that one.
- * For binary properties on ASCII machines, the block is usually for 64 code
- * points, starting with a code point evenly divisible by 64. Thus if the
- * property value for code point 257 is requested, the code goes out and
- * calculates the property values for all 64 code points between 256 and 319,
- * and stores these as a single 64-bit long bit vector, called a "swatch",
- * under the key for code point 256. The key is the UTF-8 encoding for code
- * point 256, minus the final byte. Thus, if the length of the UTF-8 encoding
- * for a code point is 13 bytes, the key will be 12 bytes long. If the value
- * for code point 258 is then requested, this code realizes that it would be
- * stored under the key for 256, and would find that value and extract the
- * relevant bit, offset from 256.
- *
- * Non-binary properties are stored in as many bits as necessary to represent
- * their values (32 currently, though the code is more general than that), not
- * as single bits, but the principle is the same: the value for each key is a
- * vector that encompasses the property values for all code points whose UTF-8
- * representations are represented by the key. That is, for all code points
- * whose UTF-8 representations are length N bytes, and the key is the first N-1
- * bytes of that.
- */
-UV
-Perl_swash_fetch(pTHX_ SV *swash, const U8 *ptr, bool do_utf8)
-{
- HV *const hv = MUTABLE_HV(SvRV(swash));
- U32 klen;
- U32 off;
- STRLEN slen = 0;
- STRLEN needents;
- const U8 *tmps = NULL;
- SV *swatch;
- const U8 c = *ptr;
-
- PERL_ARGS_ASSERT_SWASH_FETCH;
-
- /* If it really isn't a hash, it isn't really swash; must be an inversion
- * list */
- if (SvTYPE(hv) != SVt_PVHV) {
- return _invlist_contains_cp((SV*)hv,
- (do_utf8)
- ? valid_utf8_to_uvchr(ptr, NULL)
- : c);
- }
-
- /* We store the values in a "swatch" which is a vec() value in a swash
- * hash. Code points 0-255 are a single vec() stored with key length
- * (klen) 0. All other code points have a UTF-8 representation
- * 0xAA..0xYY,0xZZ. A vec() is constructed containing all of them which
- * share 0xAA..0xYY, which is the key in the hash to that vec. So the key
- * length for them is the length of the encoded char - 1. ptr[klen] is the
- * final byte in the sequence representing the character */
- if (!do_utf8 || UTF8_IS_INVARIANT(c)) {
- klen = 0;
- needents = 256;
- off = c;
- }
- else if (UTF8_IS_DOWNGRADEABLE_START(c)) {
- klen = 0;
- needents = 256;
- off = EIGHT_BIT_UTF8_TO_NATIVE(c, *(ptr + 1));
- }
- else {
- klen = UTF8SKIP(ptr) - 1;
-
- /* Each vec() stores 2**UTF_ACCUMULATION_SHIFT values. The offset into
- * the vec is the final byte in the sequence. (In EBCDIC this is
- * converted to I8 to get consecutive values.) To help you visualize
- * all this:
- * Straight 1047 After final byte
- * UTF-8 UTF-EBCDIC I8 transform
- * U+0400: \xD0\x80 \xB8\x41\x41 \xB8\x41\xA0
- * U+0401: \xD0\x81 \xB8\x41\x42 \xB8\x41\xA1
- * ...
- * U+0409: \xD0\x89 \xB8\x41\x4A \xB8\x41\xA9
- * U+040A: \xD0\x8A \xB8\x41\x51 \xB8\x41\xAA
- * ...
- * U+0412: \xD0\x92 \xB8\x41\x59 \xB8\x41\xB2
- * U+0413: \xD0\x93 \xB8\x41\x62 \xB8\x41\xB3
- * ...
- * U+041B: \xD0\x9B \xB8\x41\x6A \xB8\x41\xBB
- * U+041C: \xD0\x9C \xB8\x41\x70 \xB8\x41\xBC
- * ...
- * U+041F: \xD0\x9F \xB8\x41\x73 \xB8\x41\xBF
- * U+0420: \xD0\xA0 \xB8\x42\x41 \xB8\x42\x41
- *
- * (There are no discontinuities in the elided (...) entries.)
- * The UTF-8 key for these 33 code points is '\xD0' (which also is the
- * key for the next 31, up through U+043F, whose UTF-8 final byte is
- * \xBF). Thus in UTF-8, each key is for a vec() for 64 code points.
- * The final UTF-8 byte, which ranges between \x80 and \xBF, is an
- * index into the vec() swatch (after subtracting 0x80, which we
- * actually do with an '&').
- * In UTF-EBCDIC, each key is for a 32 code point vec(). The first 32
- * code points above have key '\xB8\x41'. The final UTF-EBCDIC byte has
- * dicontinuities which go away by transforming it into I8, and we
- * effectively subtract 0xA0 to get the index. */
- needents = (1 << UTF_ACCUMULATION_SHIFT);
- off = NATIVE_UTF8_TO_I8(ptr[klen]) & UTF_CONTINUATION_MASK;
- }
-
- /*
- * This single-entry cache saves about 1/3 of the UTF-8 overhead in test
- * suite. (That is, only 7-8% overall over just a hash cache. Still,
- * it's nothing to sniff at.) Pity we usually come through at least
- * two function calls to get here...
- *
- * NB: this code assumes that swatches are never modified, once generated!
- */
-
- if (hv == PL_last_swash_hv &&
- klen == PL_last_swash_klen &&
- (!klen || memEQ((char *)ptr, (char *)PL_last_swash_key, klen)) )
- {
- tmps = PL_last_swash_tmps;
- slen = PL_last_swash_slen;
- }
- else {
- /* 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 swatch_get */
- if (!svp || !SvPOK(*svp)
- || !(tmps = (const U8*)SvPV_const(*svp, slen)))
- {
- if (klen) {
- const UV code_point = valid_utf8_to_uvchr(ptr, NULL);
- swatch = swatch_get(swash,
- code_point & ~((UV)needents - 1),
- needents);
- }
- else { /* For the first 256 code points, the swatch has a key of
- length 0 */
- swatch = swatch_get(swash, 0, needents);
- }
-
- if (IN_PERL_COMPILETIME)
- CopHINTS_set(PL_curcop, PL_hints);
-
- svp = hv_store(hv, (const char *)ptr, klen, swatch, 0);
-
- if (!svp || !(tmps = (U8*)SvPV(*svp, slen))
- || (slen << 3) < needents)
- Perl_croak(aTHX_ "panic: swash_fetch got improper swatch, "
- "svp=%p, tmps=%p, slen=%" UVuf ", needents=%" UVuf,
- svp, tmps, (UV)slen, (UV)needents);
- }
-
- PL_last_swash_hv = hv;
- assert(klen <= sizeof(PL_last_swash_key));
- PL_last_swash_klen = (U8)klen;
- /* FIXME change interpvar.h? */
- PL_last_swash_tmps = (U8 *) tmps;
- PL_last_swash_slen = slen;
- if (klen)
- Copy(ptr, PL_last_swash_key, klen, U8);
- }
-
- switch ((int)((slen << 3) / needents)) {
- case 1:
- return ((UV) tmps[off >> 3] & (1 << (off & 7))) != 0;
- case 8:
- return ((UV) tmps[off]);
- case 16:
- off <<= 1;
- return
- ((UV) tmps[off ] << 8) +
- ((UV) tmps[off + 1]);
- case 32:
- off <<= 2;
- return
- ((UV) tmps[off ] << 24) +
- ((UV) tmps[off + 1] << 16) +
- ((UV) tmps[off + 2] << 8) +
- ((UV) tmps[off + 3]);
- }
- Perl_croak(aTHX_ "panic: swash_fetch got swatch of unexpected bit width, "
- "slen=%" UVuf ", needents=%" UVuf, (UV)slen, (UV)needents);
- NORETURN_FUNCTION_END;
-}
-
-/* Read a single line of the main body of the swash input text. These are of
- * the form:
- * 0053 0056 0073
- * where each number is hex. The first two numbers form the minimum and
- * maximum of a range, and the third is the value associated with the range.
- * Not all swashes should have a third number
- *
- * On input: l points to the beginning of the line to be examined; it points
- * to somewhere in the string of the whole input text, and is
- * terminated by a \n or the null string terminator.
- * lend points to the null terminator of that string
- * wants_value is non-zero if the swash expects a third number
- * typestr is the name of the swash's mapping, like 'ToLower'
- * On output: *min, *max, and *val are set to the values read from the line.
- * returns a pointer just beyond the line examined. If there was no
- * valid min number on the line, returns lend+1
- */
-
-STATIC U8*
-S_swash_scan_list_line(pTHX_ U8* l, U8* const lend, UV* min, UV* max, UV* val,
- const bool wants_value, const U8* const typestr)
-{
- const int typeto = typestr[0] == 'T' && typestr[1] == 'o';
- STRLEN numlen; /* Length of the number */
- I32 flags = PERL_SCAN_SILENT_ILLDIGIT
- | PERL_SCAN_DISALLOW_PREFIX
- | PERL_SCAN_SILENT_NON_PORTABLE;
-
- /* nl points to the next \n in the scan */
- U8* const nl = (U8*)memchr(l, '\n', lend - l);
-
- PERL_ARGS_ASSERT_SWASH_SCAN_LIST_LINE;
-
- /* Get the first number on the line: the range minimum */
- numlen = lend - l;
- *min = grok_hex((char *)l, &numlen, &flags, NULL);
- *max = *min; /* So can never return without setting max */
- if (numlen) /* If found a hex number, position past it */
- l += numlen;
- else if (nl) { /* Else, go handle next line, if any */
- return nl + 1; /* 1 is length of "\n" */
- }
- else { /* Else, no next line */
- return lend + 1; /* to LIST's end at which \n is not found */
- }
-
- /* The max range value follows, separated by a BLANK */
- if (isBLANK(*l)) {
- ++l;
- flags = PERL_SCAN_SILENT_ILLDIGIT
- | PERL_SCAN_DISALLOW_PREFIX
- | PERL_SCAN_SILENT_NON_PORTABLE;
- numlen = lend - l;
- *max = grok_hex((char *)l, &numlen, &flags, NULL);
- if (numlen)
- l += numlen;
- else /* If no value here, it is a single element range */
- *max = *min;
-
- /* Non-binary tables have a third entry: what the first element of the
- * range maps to. The map for those currently read here is in hex */
- if (wants_value) {
- if (isBLANK(*l)) {
- ++l;
- flags = PERL_SCAN_SILENT_ILLDIGIT
- | PERL_SCAN_DISALLOW_PREFIX
- | PERL_SCAN_SILENT_NON_PORTABLE;
- numlen = lend - l;
- *val = grok_hex((char *)l, &numlen, &flags, NULL);
- if (numlen)
- l += numlen;
- else
- *val = 0;
- }
- else {
- *val = 0;
- if (typeto) {
- /* diag_listed_as: To%s: illegal mapping '%s' */
- Perl_croak(aTHX_ "%s: illegal mapping '%s'",
- typestr, l);
- }
- }
- }
- else
- *val = 0; /* bits == 1, then any val should be ignored */
- }
- else { /* Nothing following range min, should be single element with no
- mapping expected */
- if (wants_value) {
- *val = 0;
- if (typeto) {
- /* diag_listed_as: To%s: illegal mapping '%s' */
- Perl_croak(aTHX_ "%s: illegal mapping '%s'", typestr, l);
- }
- }
- else
- *val = 0; /* bits == 1, then val should be ignored */
- }
-
- /* Position to next line if any, or EOF */
- if (nl)
- l = nl + 1;
- else
- l = lend;
-
- return l;
-}
-
-/* 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_swatch_get(pTHX_ SV* swash, UV start, UV span)
-{
- SV *swatch;
- U8 *l, *lend, *x, *xend, *s;
- STRLEN lcur, xcur, scur;
- HV *const hv = MUTABLE_HV(SvRV(swash));
-
- SV** listsvp = NULL; /* The string containing the main body of the table */
- SV** extssvp = NULL;
- U8* typestr = NULL;
- STRLEN bits = 0;
- STRLEN octets; /* if bits == 1, then octets == 0 */
- UV none;
- UV end = start + span;
-
- SV** const bitssvp = hv_fetchs(hv, "BITS", FALSE);
- SV** const nonesvp = hv_fetchs(hv, "NONE", FALSE);
- SV** const typesvp = hv_fetchs(hv, "TYPE", FALSE);
- extssvp = hv_fetchs(hv, "EXTRAS", FALSE);
- listsvp = hv_fetchs(hv, "LIST", FALSE);
-
- bits = SvUV(*bitssvp);
- none = SvUV(*nonesvp);
- typestr = (U8*)SvPV_nolen(*typesvp);
- octets = bits >> 3; /* if bits == 1, then octets == 0 */
-
- PERL_ARGS_ASSERT_SWATCH_GET;
-
- if (bits != 8 && bits != 16 && bits != 32) {
- Perl_croak(aTHX_ "panic: swatch_get doesn't expect bits %" UVuf,
- (UV)bits);
- }
-
- /* If overflowed, use the max possible */
- if (end < start) {
- end = UV_MAX;
- span = end - start;
- }
-
- /* create and initialize $swatch */
- scur = octets ? (span * octets) : (span + 7) / 8;
- swatch = newSV(scur);
- SvPOK_on(swatch);
- 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 = 0, max = 0, val = 0, upper;
- l = swash_scan_list_line(l, lend, &min, &max, &val,
- cBOOL(octets), typestr);
- if (l > lend) {
- break;
- }
-
- /* If looking for something beyond this range, go try the next one */
- if (max < start)
- continue;
-
- /* <end> is generally 1 beyond where we want to set things, but at the
- * platform's infinity, where we can't go any higher, we want to
- * include the code point at <end> */
- upper = (max < end)
- ? max
- : (max != UV_MAX || end != UV_MAX)
- ? end - 1
- : end;
-
- if (octets) {
- UV key;
- if (min < start) {
- if (!none || val < none) {
- val += start - min;
- }
- min = start;
- }
- for (key = min; key <= upper; key++) {
- STRLEN offset;
- /* 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;
- }
- }
- } /* while */
-
- /* 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;
-
- const 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 = MUTABLE_HV(SvRV(*othersvp));
- otherbitssvp = hv_fetchs(otherhv, "BITS", FALSE);
- otherbits = (STRLEN)SvUV(*otherbitssvp);
- if (bits < otherbits)
- Perl_croak(aTHX_ "panic: swatch_get found swatch size mismatch, "
- "bits=%" UVuf ", otherbits=%" UVuf, (UV)bits, (UV)otherbits);
-
- /* The "other" swatch must be destroyed after. */
- other = swatch_get(*othersvp, start, span);
- o = (U8*)SvPV(other, olen);
-
- if (!olen)
- Perl_croak(aTHX_ "panic: swatch_get got improper swatch");
-
- s = (U8*)SvPV(swatch, slen);
- {
- STRLEN otheroctets = otherbits >> 3;
- STRLEN offset = 0;
- U8* const 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;
-}
-
bool
Perl_check_utf8_print(pTHX_ const U8* s, const STRLEN len)
{
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