3 * Copyright (C) 2000, 2001, 2002, 2005, 2006, 2007, 2009 by Larry Wall and others
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
10 /* Use UTF-8 as the default script encoding?
11 * Turning this on will break scripts having non-UTF-8 binary
12 * data (such as Latin-1) in string literals. */
13 #ifdef USE_UTF8_SCRIPTS
14 # define USE_UTF8_IN_NAMES (!IN_BYTES)
16 # define USE_UTF8_IN_NAMES (PL_hints & HINT_UTF8)
19 #define to_uni_fold(c, p, lenp) _to_uni_fold_flags(c, p, lenp, 1)
20 #define to_utf8_fold(c, p, lenp) _to_utf8_fold_flags(c, p, lenp, 1)
22 /* Source backward compatibility. */
23 #define uvuni_to_utf8(d, uv) uvuni_to_utf8_flags(d, uv, 0)
24 #define is_utf8_string_loc(s, len, ep) is_utf8_string_loclen(s, len, ep, 0)
26 #define foldEQ_utf8(s1, pe1, l1, u1, s2, pe2, l2, u2) \
27 foldEQ_utf8_flags(s1, pe1, l1, u1, s2, pe2, l2, u2, 0)
28 #define FOLDEQ_UTF8_NOMIX_ASCII (1 << 0)
29 #define FOLDEQ_UTF8_LOCALE (1 << 1)
32 =for apidoc ibcmp_utf8
34 This is a synonym for (! foldEQ_utf8())
38 #define ibcmp_utf8(s1, pe1, l1, u1, s2, pe2, l2, u2) \
39 cBOOL(! foldEQ_utf8(s1, pe1, l1, u1, s2, pe2, l2, u2))
42 /* The equivalent of these macros but implementing UTF-EBCDIC
43 are in the following header file:
46 #include "utfebcdic.h"
52 EXTCONST unsigned char PL_utf8skip[] = {
53 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* ascii */
54 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* ascii */
55 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* ascii */
56 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* ascii */
57 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* bogus */
58 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* bogus */
59 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, /* scripts */
60 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,6,6, /* cjk etc. */
61 7,13, /* Perl extended (not UTF-8). Up to 72bit allowed (64-bit + reserved). */
64 EXTCONST unsigned char PL_utf8skip[];
69 /* Native character to iso-8859-1 */
70 #define NATIVE_TO_ASCII(ch) (ch)
71 #define ASCII_TO_NATIVE(ch) (ch)
72 /* Transform after encoding */
73 #define NATIVE_TO_UTF(ch) (ch)
74 #define UTF_TO_NATIVE(ch) (ch)
75 /* Transforms in wide UV chars */
76 #define UNI_TO_NATIVE(ch) (ch)
77 #define NATIVE_TO_UNI(ch) (ch)
78 /* Transforms in invariant space */
79 #define NATIVE_TO_NEED(enc,ch) (ch)
80 #define ASCII_TO_NEED(enc,ch) (ch)
82 /* As there are no translations, avoid the function wrapper */
83 #define utf8n_to_uvchr utf8n_to_uvuni
84 #define uvchr_to_utf8 uvuni_to_utf8
88 The following table is from Unicode 3.2.
90 Code Points 1st Byte 2nd Byte 3rd Byte 4th Byte
93 U+0080..U+07FF * C2..DF 80..BF
94 U+0800..U+0FFF E0 * A0..BF 80..BF
95 U+1000..U+CFFF E1..EC 80..BF 80..BF
96 U+D000..U+D7FF ED 80..9F 80..BF
97 U+D800..U+DFFF +++++++ utf16 surrogates, not legal utf8 +++++++
98 U+E000..U+FFFF EE..EF 80..BF 80..BF
99 U+10000..U+3FFFF F0 * 90..BF 80..BF 80..BF
100 U+40000..U+FFFFF F1..F3 80..BF 80..BF 80..BF
101 U+100000..U+10FFFF F4 80..8F 80..BF 80..BF
103 Note the gaps before several of the byte entries above marked by '*'. These are
104 caused by legal UTF-8 avoiding non-shortest encodings: it is technically
105 possible to UTF-8-encode a single code point in different ways, but that is
106 explicitly forbidden, and the shortest possible encoding should always be used
107 (and that is what Perl does).
112 Another way to look at it, as bits:
114 Code Points 1st Byte 2nd Byte 3rd Byte 4th Byte
117 00000bbbbbaaaaaa 110bbbbb 10aaaaaa
118 ccccbbbbbbaaaaaa 1110cccc 10bbbbbb 10aaaaaa
119 00000dddccccccbbbbbbaaaaaa 11110ddd 10cccccc 10bbbbbb 10aaaaaa
121 As you can see, the continuation bytes all begin with C<10>, and the
122 leading bits of the start byte tell how many bytes there are in the
125 Perl's extended UTF-8 means we can have start bytes up to FF.
129 #define UNI_IS_INVARIANT(c) (((UV)c) < 0x80)
130 /* Note that C0 and C1 are invalid in legal UTF8, so the lower bound of the
131 * below might ought to be C2 */
132 #define UTF8_IS_START(c) (((U8)c) >= 0xc0)
133 #define UTF8_IS_CONTINUATION(c) (((U8)c) >= 0x80 && (((U8)c) <= 0xbf))
134 #define UTF8_IS_CONTINUED(c) (((U8)c) & 0x80)
135 #define UTF8_IS_DOWNGRADEABLE_START(c) (((U8)c & 0xfc) == 0xc0)
137 #define UTF_START_MARK(len) (((len) > 7) ? 0xFF : (0xFE << (7-(len))))
138 #define UTF_START_MASK(len) (((len) >= 7) ? 0x00 : (0x1F >> ((len)-2)))
140 #define UTF_CONTINUATION_MARK 0x80
141 #define UTF_ACCUMULATION_SHIFT 6
142 #define UTF_CONTINUATION_MASK ((U8)0x3f)
145 #define UNISKIP(uv) ( (uv) < 0x80 ? 1 : \
147 (uv) < 0x10000 ? 3 : \
148 (uv) < 0x200000 ? 4 : \
149 (uv) < 0x4000000 ? 5 : \
150 (uv) < 0x80000000 ? 6 : \
151 (uv) < UTF8_QUAD_MAX ? 7 : 13 )
153 /* No, I'm not even going to *TRY* putting #ifdef inside a #define */
154 #define UNISKIP(uv) ( (uv) < 0x80 ? 1 : \
156 (uv) < 0x10000 ? 3 : \
157 (uv) < 0x200000 ? 4 : \
158 (uv) < 0x4000000 ? 5 : \
159 (uv) < 0x80000000 ? 6 : 7 )
162 #endif /* EBCDIC vs ASCII */
164 /* Rest of these are attributes of Unicode and perl's internals rather than the
165 * encoding, or happen to be the same in both ASCII and EBCDIC (at least at
166 * this level; the macros that some of these call may have different
167 * definitions in the two encodings */
169 #define NATIVE8_TO_UNI(ch) NATIVE_TO_ASCII(ch) /* a clearer synonym */
171 #define UTF8_ACCUMULATE(old, new) (((old) << UTF_ACCUMULATION_SHIFT) | (((U8)new) & UTF_CONTINUATION_MASK))
173 /* Convert a two (not one) byte utf8 character to a unicode code point value.
174 * Needs just one iteration of accumulate. Should not be used unless it is
175 * known that the two bytes are legal: 1) two-byte start, and 2) continuation.
176 * Note that the result can be larger than 255 if the input character is not
178 #define TWO_BYTE_UTF8_TO_UNI(HI, LO) \
179 UTF8_ACCUMULATE((NATIVE_TO_UTF(HI) & UTF_START_MASK(2)), \
182 #define UTF8SKIP(s) PL_utf8skip[*(const U8*)(s)]
184 #define UTF8_IS_INVARIANT(c) UNI_IS_INVARIANT(NATIVE_TO_UTF(c))
185 #define NATIVE_IS_INVARIANT(c) UNI_IS_INVARIANT(NATIVE8_TO_UNI(c))
187 #define MAX_PORTABLE_UTF8_TWO_BYTE 0x3FF /* constrained by EBCDIC */
189 /* The macros in the next sets are used to generate the two utf8 or utfebcdic
190 * bytes from an ordinal that is known to fit into two bytes; it must be less
191 * than 0x3FF to work across both encodings. */
192 /* Nocast allows these to be used in the case label of a switch statement */
193 #define UTF8_TWO_BYTE_HI_nocast(c) UTF_TO_NATIVE(((c) >> UTF_ACCUMULATION_SHIFT) | (0xFF & UTF_START_MARK(2)))
194 #define UTF8_TWO_BYTE_LO_nocast(c) UTF_TO_NATIVE(((c) & UTF_CONTINUATION_MASK) | UTF_CONTINUATION_MARK)
196 #define UTF8_TWO_BYTE_HI(c) ((U8) (UTF8_TWO_BYTE_HI_nocast(c)))
197 #define UTF8_TWO_BYTE_LO(c) ((U8) (UTF8_TWO_BYTE_LO_nocast(c)))
199 /* This name is used when the source is a single byte */
200 #define UTF8_EIGHT_BIT_HI(c) UTF8_TWO_BYTE_HI((U8)(c))
201 #define UTF8_EIGHT_BIT_LO(c) UTF8_TWO_BYTE_LO((U8)(c))
204 * Note: we try to be careful never to call the isXXX_utf8() functions
205 * unless we're pretty sure we've seen the beginning of a UTF-8 or UTFEBCDIC
206 * character. Otherwise we risk loading in the heavy-duty swash_init and
207 * swash_fetch routines unnecessarily.
209 #define isIDFIRST_lazy_if(p,c) ((IN_BYTES || (!c || ! UTF8_IS_START(*((const U8*)p)))) \
211 : isIDFIRST_utf8((const U8*)p))
212 #define isALNUM_lazy_if(p,c) ((IN_BYTES || (!c || ! UTF8_IS_START(*((const U8*)p)))) \
214 : isALNUM_utf8((const U8*)p))
216 #define isIDFIRST_lazy(p) isIDFIRST_lazy_if(p,1)
217 #define isALNUM_lazy(p) isALNUM_lazy_if(p,1)
219 #define UTF8_MAXBYTES 13
220 /* How wide can a single UTF-8 encoded character become in bytes.
221 * NOTE: Strictly speaking Perl's UTF-8 should not be called UTF-8
222 * since UTF-8 is an encoding of Unicode and given Unicode's current
223 * upper limit only four bytes is possible. Perl thinks of UTF-8
224 * as a way to encode non-negative integers in a binary format. */
225 #define UTF8_MAXLEN UTF8_MAXBYTES
227 /* The maximum number of UTF-8 bytes a single Unicode character can
228 * uppercase/lowercase/fold into; this number depends on the Unicode
229 * version. An example of maximal expansion is the U+03B0 which
230 * uppercases to U+03C5 U+0308 U+0301. The Unicode databases that
231 * tell these things are UnicodeData.txt, CaseFolding.txt, and
232 * SpecialCasing.txt. The value is 6 for strict Unicode characters, but it has
233 * to be as big as Perl allows for a single character */
234 #define UTF8_MAXBYTES_CASE UTF8_MAXBYTES
236 /* A Unicode character can fold to up to 3 characters */
237 #define UTF8_MAX_FOLD_CHAR_EXPAND 3
239 #define IN_BYTES (CopHINTS_get(PL_curcop) & HINT_BYTES)
240 #define DO_UTF8(sv) (SvUTF8(sv) && !IN_BYTES)
241 #define IN_UNI_8_BIT ( (CopHINTS_get(PL_curcop) & HINT_UNI_8_BIT) \
242 && ! IN_LOCALE_RUNTIME && ! IN_BYTES)
244 #define UTF8_ALLOW_EMPTY 0x0001 /* Allow a zero length string */
246 /* Allow first byte to be a continuation byte */
247 #define UTF8_ALLOW_CONTINUATION 0x0002
249 /* Allow second... bytes to be non-continuation bytes */
250 #define UTF8_ALLOW_NON_CONTINUATION 0x0004
252 /* expecting more bytes than were available in the string */
253 #define UTF8_ALLOW_SHORT 0x0008
255 /* Overlong sequence; i.e., the code point can be specified in fewer bytes. */
256 #define UTF8_ALLOW_LONG 0x0010
258 #define UTF8_DISALLOW_SURROGATE 0x0020 /* Unicode surrogates */
259 #define UTF8_WARN_SURROGATE 0x0040
261 #define UTF8_DISALLOW_NONCHAR 0x0080 /* Unicode non-character */
262 #define UTF8_WARN_NONCHAR 0x0100 /* code points */
264 #define UTF8_DISALLOW_SUPER 0x0200 /* Super-set of Unicode: code */
265 #define UTF8_WARN_SUPER 0x0400 /* points above the legal max */
267 /* Code points which never were part of the original UTF-8 standard, the first
268 * byte of which is a FE or FF on ASCII platforms. */
269 #define UTF8_DISALLOW_FE_FF 0x0800
270 #define UTF8_WARN_FE_FF 0x1000
272 #define UTF8_CHECK_ONLY 0x2000
274 /* For backwards source compatibility. They do nothing, as the default now
275 * includes what they used to mean. The first one's meaning was to allow the
276 * just the single non-character 0xFFFF */
277 #define UTF8_ALLOW_FFFF 0
278 #define UTF8_ALLOW_SURROGATE 0
280 #define UTF8_DISALLOW_ILLEGAL_INTERCHANGE (UTF8_DISALLOW_SUPER|UTF8_DISALLOW_NONCHAR|UTF8_DISALLOW_SURROGATE|UTF8_DISALLOW_FE_FF)
281 #define UTF8_WARN_ILLEGAL_INTERCHANGE \
282 (UTF8_WARN_SUPER|UTF8_WARN_NONCHAR|UTF8_WARN_SURROGATE|UTF8_WARN_FE_FF)
283 #define UTF8_ALLOW_ANY \
284 (~(UTF8_DISALLOW_ILLEGAL_INTERCHANGE|UTF8_WARN_ILLEGAL_INTERCHANGE))
285 #define UTF8_ALLOW_ANYUV \
287 & ~(UTF8_DISALLOW_ILLEGAL_INTERCHANGE|UTF8_WARN_ILLEGAL_INTERCHANGE))
288 #define UTF8_ALLOW_DEFAULT (ckWARN(WARN_UTF8) ? 0 : \
291 /* Surrogates, non-character code points and above-Unicode code points are
292 * problematic in some contexts. This allows code that needs to check for
293 * those to to quickly exclude the vast majority of code points it will
296 # define UTF8_FIRST_PROBLEMATIC_CODE_POINT_FIRST_BYTE UTF_TO_NATIVE(0xF1)
298 # define UTF8_FIRST_PROBLEMATIC_CODE_POINT_FIRST_BYTE 0xED
302 * U+D7FF: \xED\x9F\xBF \xF1\xB5\xBF\xBF last before surrogates
303 * U+D800: \xED\xA0\x80 \xF1\xB6\xA0\xA0 1st surrogate
304 * U+DFFF: \xED\xBF\xBF \xF1\xB7\xBF\xBF final surrogate
305 * U+E000: \xEE\x80\x80 \xF1\xB8\xA0\xA0 next after surrogates
307 #ifdef EBCDIC /* Both versions assume well-formed UTF8 */
308 # define UTF8_IS_SURROGATE(s) (*(s) == UTF_TO_NATIVE(0xF1) \
309 && (*((s) +1) == UTF_TO_NATIVE(0xB6)) || *((s) + 1) == UTF_TO_NATIVE(0xB7))
311 # define UTF8_IS_SURROGATE(s) (*(s) == 0xED && *((s) + 1) >= 0xA0)
315 * U+10FFFF: \xF4\x8F\xBF\xBF \xF9\xA1\xBF\xBF\xBF max legal Unicode
316 * U+110000: \xF4\x90\x80\x80 \xF9\xA2\xA0\xA0\xA0
317 * U+110001: \xF4\x90\x80\x81 \xF9\xA2\xA0\xA0\xA1
319 #ifdef EBCDIC /* Both versions assume well-formed UTF8 */
320 # define UTF8_IS_SUPER(s) (*(s) >= UTF_TO_NATIVE(0xF9) \
321 && (*(s) > UTF_TO_NATIVE(0xF9) || (*((s) + 1) >= UTF_TO_NATIVE(0xA2))))
323 # define UTF8_IS_SUPER(s) (*(s) >= 0xF4 \
324 && (*(s) > 0xF4 || (*((s) + 1) >= 0x90)))
328 * U+FDCF: \xEF\xB7\x8F \xF1\xBF\xAE\xAF last before non-char block
329 * U+FDD0: \xEF\xB7\x90 \xF1\xBF\xAE\xB0 first non-char in block
330 * U+FDEF: \xEF\xB7\xAF \xF1\xBF\xAF\xAF last non-char in block
331 * U+FDF0: \xEF\xB7\xB0 \xF1\xBF\xAF\xB0 first after non-char block
332 * U+FFFF: \xEF\xBF\xBF \xF1\xBF\xBF\xBF
333 * U+1FFFF: \xF0\x9F\xBF\xBF \xF3\xBF\xBF\xBF
334 * U+2FFFF: \xF0\xAF\xBF\xBF \xF5\xBF\xBF\xBF
335 * U+3FFFF: \xF0\xBF\xBF\xBF \xF7\xBF\xBF\xBF
336 * U+4FFFF: \xF1\x8F\xBF\xBF \xF8\xA9\xBF\xBF\xBF
337 * U+5FFFF: \xF1\x9F\xBF\xBF \xF8\xAB\xBF\xBF\xBF
338 * U+6FFFF: \xF1\xAF\xBF\xBF \xF8\xAD\xBF\xBF\xBF
339 * U+7FFFF: \xF1\xBF\xBF\xBF \xF8\xAF\xBF\xBF\xBF
340 * U+8FFFF: \xF2\x8F\xBF\xBF \xF8\xB1\xBF\xBF\xBF
341 * U+9FFFF: \xF2\x9F\xBF\xBF \xF8\xB3\xBF\xBF\xBF
342 * U+AFFFF: \xF2\xAF\xBF\xBF \xF8\xB5\xBF\xBF\xBF
343 * U+BFFFF: \xF2\xBF\xBF\xBF \xF8\xB7\xBF\xBF\xBF
344 * U+CFFFF: \xF3\x8F\xBF\xBF \xF8\xB9\xBF\xBF\xBF
345 * U+DFFFF: \xF3\x9F\xBF\xBF \xF8\xBB\xBF\xBF\xBF
346 * U+EFFFF: \xF3\xAF\xBF\xBF \xF8\xBD\xBF\xBF\xBF
347 * U+FFFFF: \xF3\xBF\xBF\xBF \xF8\xBF\xBF\xBF\xBF
348 * U+10FFFF: \xF4\x8F\xBF\xBF \xF9\xA1\xBF\xBF\xBF
350 #define UTF8_IS_NONCHAR_(s) ( \
351 *(s) >= UTF8_FIRST_PROBLEMATIC_CODE_POINT_FIRST_BYTE \
352 && ! UTF8_IS_SUPER(s) \
353 && UTF8_IS_NONCHAR_GIVEN_THAT_NON_SUPER_AND_GE_FIRST_PROBLEMATIC(s) \
355 #ifdef EBCDIC /* Both versions assume well-formed UTF8 */
356 # define UTF8_IS_NONCHAR_GIVEN_THAT_NON_SUPER_AND_GE_PROBLEMATIC(s) \
357 ((*(s) == UTF_TO_NATIVE(0xF1) \
358 && (*((s) + 1) == UTF_TO_NATIVE(0xBF) \
359 && ((*((s) + 2) == UTF_TO_NATIVE(0xAE) \
360 && *((s) + 3) >= UTF_TO_NATIVE(0xB0)) \
361 || (*((s) + 2) == UTF_TO_NATIVE(0xAF) \
362 && *((s) + 3) <= UTF_TO_NATIVE(0xAF))))) \
363 || (UTF8SKIP(*(s)) > 3 \
364 /* (These were all derived by inspection and experimentation with an */ \
365 /* editor) The next line checks the next to final byte in the char */ \
366 && *((s) + UTF8SKIP(*(s)) - 2) == UTF_TO_NATIVE(0xBF) \
367 && *((s) + UTF8SKIP(*(s)) - 3) == UTF_TO_NATIVE(0xBF) \
368 && (NATIVE_TO_UTF(*((s) + UTF8SKIP(*(s)) - 4)) & 0x81) == 0x81 \
369 && (NATIVE_TO_UTF(*((s) + UTF8SKIP(*(s)) - 1)) & 0xBE) == 0XBE))
371 # define UTF8_IS_NONCHAR_GIVEN_THAT_NON_SUPER_AND_GE_PROBLEMATIC(s) \
373 && ((*((s) + 1) == 0xB7 && (*((s) + 2) >= 0x90 && (*((s) + 2) <= 0xAF)))\
374 /* Gets U+FFF[EF] */ \
375 || (*((s) + 1) == 0xBF && ((*((s) + 2) & 0xBE) == 0xBE)))) \
376 || ((*((s) + 2) == 0xBF \
377 && (*((s) + 3) & 0xBE) == 0xBE \
378 /* Excludes things like U+10FFE = \xF0\x90\xBF\xBE */ \
379 && (*((s) + 1) & 0x8F) == 0x8F)))
382 #define UNICODE_SURROGATE_FIRST 0xD800
383 #define UNICODE_SURROGATE_LAST 0xDFFF
384 #define UNICODE_REPLACEMENT 0xFFFD
385 #define UNICODE_BYTE_ORDER_MARK 0xFEFF
387 /* Though our UTF-8 encoding can go beyond this,
388 * let's be conservative and do as Unicode says. */
389 #define PERL_UNICODE_MAX 0x10FFFF
391 #define UNICODE_WARN_SURROGATE 0x0001 /* UTF-16 surrogates */
392 #define UNICODE_WARN_NONCHAR 0x0002 /* Non-char code points */
393 #define UNICODE_WARN_SUPER 0x0004 /* Above 0x10FFFF */
394 #define UNICODE_WARN_FE_FF 0x0008 /* Above 0x10FFFF */
395 #define UNICODE_DISALLOW_SURROGATE 0x0010
396 #define UNICODE_DISALLOW_NONCHAR 0x0020
397 #define UNICODE_DISALLOW_SUPER 0x0040
398 #define UNICODE_DISALLOW_FE_FF 0x0080
399 #define UNICODE_WARN_ILLEGAL_INTERCHANGE \
400 (UNICODE_WARN_SURROGATE|UNICODE_WARN_NONCHAR|UNICODE_WARN_SUPER)
401 #define UNICODE_DISALLOW_ILLEGAL_INTERCHANGE \
402 (UNICODE_DISALLOW_SURROGATE|UNICODE_DISALLOW_NONCHAR|UNICODE_DISALLOW_SUPER)
404 /* For backward source compatibility, as are now the default */
405 #define UNICODE_ALLOW_SURROGATE 0
406 #define UNICODE_ALLOW_SUPER 0
407 #define UNICODE_ALLOW_ANY 0
409 #define UNICODE_IS_SURROGATE(c) ((c) >= UNICODE_SURROGATE_FIRST && \
410 (c) <= UNICODE_SURROGATE_LAST)
411 #define UNICODE_IS_REPLACEMENT(c) ((c) == UNICODE_REPLACEMENT)
412 #define UNICODE_IS_BYTE_ORDER_MARK(c) ((c) == UNICODE_BYTE_ORDER_MARK)
413 #define UNICODE_IS_NONCHAR(c) ((c >= 0xFDD0 && c <= 0xFDEF) \
414 /* The other noncharacters end in FFFE or FFFF, which \
415 * the mask below catches both of, but beyond the last \
416 * official unicode code point, they aren't \
417 * noncharacters, since those aren't Unicode \
418 * characters at all */ \
419 || ((((c & 0xFFFE) == 0xFFFE)) && ! UNICODE_IS_SUPER(c)))
420 #define UNICODE_IS_SUPER(c) ((c) > PERL_UNICODE_MAX)
421 #define UNICODE_IS_FE_FF(c) ((c) > 0x7FFFFFFF)
424 # define UTF8_QUAD_MAX UINT64_C(0x1000000000)
427 #define UNICODE_GREEK_CAPITAL_LETTER_SIGMA 0x03A3
428 #define UNICODE_GREEK_SMALL_LETTER_FINAL_SIGMA 0x03C2
429 #define UNICODE_GREEK_SMALL_LETTER_SIGMA 0x03C3
430 #define GREEK_SMALL_LETTER_MU 0x03BC
431 #define GREEK_CAPITAL_LETTER_MU 0x039C /* Upper and title case of MICRON */
432 #define LATIN_CAPITAL_LETTER_Y_WITH_DIAERESIS 0x0178 /* Also is title case */
433 #define LATIN_CAPITAL_LETTER_SHARP_S 0x1E9E
435 #define UNI_DISPLAY_ISPRINT 0x0001
436 #define UNI_DISPLAY_BACKSLASH 0x0002
437 #define UNI_DISPLAY_QQ (UNI_DISPLAY_ISPRINT|UNI_DISPLAY_BACKSLASH)
438 #define UNI_DISPLAY_REGEX (UNI_DISPLAY_ISPRINT|UNI_DISPLAY_BACKSLASH)
441 # define LATIN_SMALL_LETTER_SHARP_S 0x00DF
442 # define LATIN_SMALL_LETTER_Y_WITH_DIAERESIS 0x00FF
443 # define MICRO_SIGN 0x00B5
444 # define LATIN_CAPITAL_LETTER_A_WITH_RING_ABOVE 0x00C5
445 # define LATIN_SMALL_LETTER_A_WITH_RING_ABOVE 0x00E5
448 #define ANYOF_FOLD_SHARP_S(node, input, end) \
449 (ANYOF_BITMAP_TEST(node, LATIN_SMALL_LETTER_SHARP_S) && \
450 (ANYOF_NONBITMAP(node)) && \
451 (ANYOF_FLAGS(node) & ANYOF_LOC_NONBITMAP_FOLD) && \
452 ((end) > (input) + 1) && \
453 toLOWER((input)[0]) == 's' && \
454 toLOWER((input)[1]) == 's')
455 #define SHARP_S_SKIP 2
458 /* IS_UTF8_CHAR() is not ported to EBCDIC */
460 #define IS_UTF8_CHAR_1(p) \
462 #define IS_UTF8_CHAR_2(p) \
463 ((p)[0] >= 0xC2 && (p)[0] <= 0xDF && \
464 (p)[1] >= 0x80 && (p)[1] <= 0xBF)
465 #define IS_UTF8_CHAR_3a(p) \
467 (p)[1] >= 0xA0 && (p)[1] <= 0xBF && \
468 (p)[2] >= 0x80 && (p)[2] <= 0xBF)
469 #define IS_UTF8_CHAR_3b(p) \
470 ((p)[0] >= 0xE1 && (p)[0] <= 0xEC && \
471 (p)[1] >= 0x80 && (p)[1] <= 0xBF && \
472 (p)[2] >= 0x80 && (p)[2] <= 0xBF)
473 #define IS_UTF8_CHAR_3c(p) \
475 (p)[1] >= 0x80 && (p)[1] <= 0xBF && \
476 (p)[2] >= 0x80 && (p)[2] <= 0xBF)
477 /* In IS_UTF8_CHAR_3c(p) one could use
478 * (p)[1] >= 0x80 && (p)[1] <= 0x9F
479 * if one wanted to exclude surrogates. */
480 #define IS_UTF8_CHAR_3d(p) \
481 ((p)[0] >= 0xEE && (p)[0] <= 0xEF && \
482 (p)[1] >= 0x80 && (p)[1] <= 0xBF && \
483 (p)[2] >= 0x80 && (p)[2] <= 0xBF)
484 #define IS_UTF8_CHAR_4a(p) \
486 (p)[1] >= 0x90 && (p)[1] <= 0xBF && \
487 (p)[2] >= 0x80 && (p)[2] <= 0xBF && \
488 (p)[3] >= 0x80 && (p)[3] <= 0xBF)
489 #define IS_UTF8_CHAR_4b(p) \
490 ((p)[0] >= 0xF1 && (p)[0] <= 0xF3 && \
491 (p)[1] >= 0x80 && (p)[1] <= 0xBF && \
492 (p)[2] >= 0x80 && (p)[2] <= 0xBF && \
493 (p)[3] >= 0x80 && (p)[3] <= 0xBF)
494 /* In IS_UTF8_CHAR_4c(p) one could use
496 * if one wanted to stop at the Unicode limit U+10FFFF.
497 * The 0xF7 allows us to go to 0x1fffff (0x200000 would
498 * require five bytes). Not doing any further code points
499 * since that is not needed (and that would not be strict
500 * UTF-8, anyway). The "slow path" in Perl_is_utf8_char()
501 * will take care of the "extended UTF-8". */
502 #define IS_UTF8_CHAR_4c(p) \
503 ((p)[0] >= 0xF4 && (p)[0] <= 0xF7 && \
504 (p)[1] >= 0x80 && (p)[1] <= 0xBF && \
505 (p)[2] >= 0x80 && (p)[2] <= 0xBF && \
506 (p)[3] >= 0x80 && (p)[3] <= 0xBF)
508 #define IS_UTF8_CHAR_3(p) \
509 (IS_UTF8_CHAR_3a(p) || \
510 IS_UTF8_CHAR_3b(p) || \
511 IS_UTF8_CHAR_3c(p) || \
513 #define IS_UTF8_CHAR_4(p) \
514 (IS_UTF8_CHAR_4a(p) || \
515 IS_UTF8_CHAR_4b(p) || \
518 /* IS_UTF8_CHAR(p) is strictly speaking wrong (not UTF-8) because it
519 * (1) allows UTF-8 encoded UTF-16 surrogates
520 * (2) it allows code points past U+10FFFF.
521 * The Perl_is_utf8_char() full "slow" code will handle the Perl
522 * "extended UTF-8". */
523 #define IS_UTF8_CHAR(p, n) \
524 ((n) == 1 ? IS_UTF8_CHAR_1(p) : \
525 (n) == 2 ? IS_UTF8_CHAR_2(p) : \
526 (n) == 3 ? IS_UTF8_CHAR_3(p) : \
527 (n) == 4 ? IS_UTF8_CHAR_4(p) : 0)
529 #define IS_UTF8_CHAR_FAST(n) ((n) <= 4)
531 #endif /* IS_UTF8_CHAR() for UTF-8 */
535 * c-indentation-style: bsd
537 * indent-tabs-mode: t
540 * ex: set ts=8 sts=4 sw=4 noet: