/* utf8.h
*
- * Copyright (C) 2000, 2001, 2002, by Larry Wall and others
+ * Copyright (C) 2000, 2001, 2002, 2005, 2006, 2007, 2009 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.
*/
/* Use UTF-8 as the default script encoding?
- * Turning this on will break scripts having non-UTF8 binary
+ * Turning this on will break scripts having non-UTF-8 binary
* data (such as Latin-1) in string literals. */
#ifdef USE_UTF8_SCRIPTS
# define USE_UTF8_IN_NAMES (!IN_BYTES)
# define USE_UTF8_IN_NAMES (PL_hints & HINT_UTF8)
#endif
+/* Source backward compatibility. */
+#define uvuni_to_utf8(d, uv) uvuni_to_utf8_flags(d, uv, 0)
+#define is_utf8_string_loc(s, len, ep) is_utf8_string_loclen(s, len, ep, 0)
+
+#define foldEQ_utf8(s1, pe1, l1, u1, s2, pe2, l2, u2) \
+ foldEQ_utf8_flags(s1, pe1, l1, u1, s2, pe2, l2, u2, 0)
+#define FOLDEQ_UTF8_NOMIX_ASCII (1 << 0)
+#define FOLDEQ_UTF8_LOCALE (1 << 1)
+
+/*
+=for apidoc ibcmp_utf8
+
+This is a synonym for (! foldEQ_utf8())
+
+=cut
+*/
+#define ibcmp_utf8(s1, pe1, l1, u1, s2, pe2, l2, u2) \
+ cBOOL(! foldEQ_utf8(s1, pe1, l1, u1, s2, pe2, l2, u2))
+
#ifdef EBCDIC
/* The equivalent of these macros but implementing UTF-EBCDIC
are in the following header file:
*/
#include "utfebcdic.h"
-#else
+
+#else /* ! EBCDIC */
START_EXTERN_C
#ifdef DOINIT
#endif
END_EXTERN_C
-#define UTF8SKIP(s) PL_utf8skip[*(U8*)s]
/* Native character to iso-8859-1 */
#define NATIVE_TO_ASCII(ch) (ch)
#define NATIVE_TO_NEED(enc,ch) (ch)
#define ASCII_TO_NEED(enc,ch) (ch)
-/* As there are no translations avoid the function wrapper */
-#define Perl_utf8n_to_uvchr Perl_utf8n_to_uvuni
-#define Perl_uvchr_to_utf8 Perl_uvuni_to_utf8
+/* As there are no translations, avoid the function wrapper */
+#define utf8n_to_uvchr utf8n_to_uvuni
+#define uvchr_to_utf8 uvuni_to_utf8
/*
Code Points 1st Byte 2nd Byte 3rd Byte 4th Byte
U+0000..U+007F 00..7F
- U+0080..U+07FF C2..DF 80..BF
- U+0800..U+0FFF E0 A0..BF 80..BF
+ U+0080..U+07FF * C2..DF 80..BF
+ U+0800..U+0FFF E0 * A0..BF 80..BF
U+1000..U+CFFF E1..EC 80..BF 80..BF
U+D000..U+D7FF ED 80..9F 80..BF
- U+D800..U+DFFF ******* ill-formed *******
+ U+D800..U+DFFF +++++++ utf16 surrogates, not legal utf8 +++++++
U+E000..U+FFFF EE..EF 80..BF 80..BF
- U+10000..U+3FFFF F0 90..BF 80..BF 80..BF
+ U+10000..U+3FFFF F0 * 90..BF 80..BF 80..BF
U+40000..U+FFFFF F1..F3 80..BF 80..BF 80..BF
U+100000..U+10FFFF F4 80..8F 80..BF 80..BF
-Note the A0..BF in U+0800..U+0FFF, the 80..9F in U+D000...U+D7FF,
-the 90..BF in U+10000..U+3FFFF, and the 80...8F in U+100000..U+10FFFF.
-The "gaps" are caused by legal UTF-8 avoiding non-shortest encodings:
-it is technically possible to UTF-8-encode a single code point in different
-ways, but that is explicitly forbidden, and the shortest possible encoding
-should always be used (and that is what Perl does).
+Note the gaps before several of the byte entries above marked by '*'. These are
+caused by legal UTF-8 avoiding non-shortest encodings: it is technically
+possible to UTF-8-encode a single code point in different ways, but that is
+explicitly forbidden, and the shortest possible encoding should always be used
+(and that is what Perl does).
*/
00000dddccccccbbbbbbaaaaaa 11110ddd 10cccccc 10bbbbbb 10aaaaaa
As you can see, the continuation bytes all begin with C<10>, and the
-leading bits of the start byte tell how many bytes the are in the
+leading bits of the start byte tell how many bytes there are in the
encoded character.
-*/
+Perl's extended UTF-8 means we can have start bytes up to FF.
+*/
#define UNI_IS_INVARIANT(c) (((UV)c) < 0x80)
-#define UTF8_IS_INVARIANT(c) UNI_IS_INVARIANT(NATIVE_TO_UTF(c))
-#define NATIVE_IS_INVARIANT(c) UNI_IS_INVARIANT(NATIVE_TO_ASCII(c))
-#define UTF8_IS_START(c) (((U8)c) >= 0xc0 && (((U8)c) <= 0xfd))
+/* Note that C0 and C1 are invalid in legal UTF8, so the lower bound of the
+ * below might ought to be C2 */
+#define UTF8_IS_START(c) (((U8)c) >= 0xc0)
#define UTF8_IS_CONTINUATION(c) (((U8)c) >= 0x80 && (((U8)c) <= 0xbf))
#define UTF8_IS_CONTINUED(c) (((U8)c) & 0x80)
#define UTF8_IS_DOWNGRADEABLE_START(c) (((U8)c & 0xfc) == 0xc0)
-#define UTF_START_MARK(len) ((len > 7) ? 0xFF : (0xFE << (7-len)))
-#define UTF_START_MASK(len) ((len >= 7) ? 0x00 : (0x1F >> (len-2)))
+#define UTF_START_MARK(len) (((len) > 7) ? 0xFF : (0xFE << (7-(len))))
+#define UTF_START_MASK(len) (((len) >= 7) ? 0x00 : (0x1F >> ((len)-2)))
#define UTF_CONTINUATION_MARK 0x80
#define UTF_ACCUMULATION_SHIFT 6
#define UTF_CONTINUATION_MASK ((U8)0x3f)
-#define UTF8_ACCUMULATE(old, new) (((old) << UTF_ACCUMULATION_SHIFT) | (((U8)new) & UTF_CONTINUATION_MASK))
-
-#define UTF8_EIGHT_BIT_HI(c) ((((U8)(c))>>UTF_ACCUMULATION_SHIFT)|UTF_START_MARK(2))
-#define UTF8_EIGHT_BIT_LO(c) (((((U8)(c)))&UTF_CONTINUATION_MASK)|UTF_CONTINUATION_MARK)
#ifdef HAS_QUAD
#define UNISKIP(uv) ( (uv) < 0x80 ? 1 : \
(uv) < 0x80000000 ? 6 : 7 )
#endif
+#endif /* EBCDIC vs ASCII */
+
+/* Rest of these are attributes of Unicode and perl's internals rather than the
+ * encoding, or happen to be the same in both ASCII and EBCDIC (at least at
+ * this level; the macros that some of these call may have different
+ * definitions in the two encodings */
+
+#define NATIVE8_TO_UNI(ch) NATIVE_TO_ASCII(ch) /* a clearer synonym */
+
+#define UTF8_ACCUMULATE(old, new) (((old) << UTF_ACCUMULATION_SHIFT) | (((U8)new) & UTF_CONTINUATION_MASK))
+
+/* Convert a two (not one) byte utf8 character to a unicode code point value.
+ * Needs just one iteration of accumulate. Should not be used unless it is
+ * known that the two bytes are legal: 1) two-byte start, and 2) continuation.
+ * Note that the result can be larger than 255 if the input character is not
+ * downgradable */
+#define TWO_BYTE_UTF8_TO_UNI(HI, LO) \
+ UTF8_ACCUMULATE((NATIVE_TO_UTF(HI) & UTF_START_MASK(2)), \
+ NATIVE_TO_UTF(LO))
+
+#define UTF8SKIP(s) PL_utf8skip[*(const U8*)(s)]
+
+#define UTF8_IS_INVARIANT(c) UNI_IS_INVARIANT(NATIVE_TO_UTF(c))
+#define NATIVE_IS_INVARIANT(c) UNI_IS_INVARIANT(NATIVE8_TO_UNI(c))
+
+#define MAX_PORTABLE_UTF8_TWO_BYTE 0x3FF /* constrained by EBCDIC */
+
+/* The macros in the next sets are used to generate the two utf8 or utfebcdic
+ * bytes from an ordinal that is known to fit into two bytes; it must be less
+ * than 0x3FF to work across both encodings. */
+/* Nocast allows these to be used in the case label of a switch statement */
+#define UTF8_TWO_BYTE_HI_nocast(c) UTF_TO_NATIVE(((c) >> UTF_ACCUMULATION_SHIFT) | (0xFF & UTF_START_MARK(2)))
+#define UTF8_TWO_BYTE_LO_nocast(c) UTF_TO_NATIVE(((c) & UTF_CONTINUATION_MASK) | UTF_CONTINUATION_MARK)
+
+#define UTF8_TWO_BYTE_HI(c) ((U8) (UTF8_TWO_BYTE_HI_nocast(c)))
+#define UTF8_TWO_BYTE_LO(c) ((U8) (UTF8_TWO_BYTE_LO_nocast(c)))
+
+/* This name is used when the source is a single byte */
+#define UTF8_EIGHT_BIT_HI(c) UTF8_TWO_BYTE_HI((U8)(c))
+#define UTF8_EIGHT_BIT_LO(c) UTF8_TWO_BYTE_LO((U8)(c))
+
/*
* Note: we try to be careful never to call the isXXX_utf8() functions
- * unless we're pretty sure we've seen the beginning of a UTF-8 character
- * (that is, the two high bits are set). Otherwise we risk loading in the
- * heavy-duty SWASHINIT and SWASHGET routines unnecessarily.
+ * unless we're pretty sure we've seen the beginning of a UTF-8 or UTFEBCDIC
+ * character. Otherwise we risk loading in the heavy-duty swash_init and
+ * swash_fetch routines unnecessarily.
*/
-#define isIDFIRST_lazy_if(p,c) ((IN_BYTES || (!c || (*((U8*)p) < 0xc0))) \
+#define isIDFIRST_lazy_if(p,c) ((IN_BYTES || (!c || ! UTF8_IS_START(*((const U8*)p)))) \
? isIDFIRST(*(p)) \
- : isIDFIRST_utf8((U8*)p))
-#define isALNUM_lazy_if(p,c) ((IN_BYTES || (!c || (*((U8*)p) < 0xc0))) \
+ : isIDFIRST_utf8((const U8*)p))
+#define isALNUM_lazy_if(p,c) ((IN_BYTES || (!c || ! UTF8_IS_START(*((const U8*)p)))) \
? isALNUM(*(p)) \
- : isALNUM_utf8((U8*)p))
-
-
-#endif /* EBCDIC vs ASCII */
-
-/* Rest of these are attributes of Unicode and perl's internals rather than the encoding */
+ : isALNUM_utf8((const U8*)p))
#define isIDFIRST_lazy(p) isIDFIRST_lazy_if(p,1)
#define isALNUM_lazy(p) isALNUM_lazy_if(p,1)
-/* how wide can a single UTF8 encoded character become */
-#define UTF8_MAXLEN 13
-/* how wide a character can become when upper/lowercased */
-#define UTF8_MAXLEN_UCLC_MULT 3
-#define UTF8_MAXLEN_UCLC (UTF8_MAXLEN*UTF8_MAXLEN_UCLC_MULT)
-/* how wide a character can become when casefolded */
-#define UTF8_MAXLEN_FOLD_MULT 3
-#define UTF8_MAXLEN_FOLD (UTF8_MAXLEN*UTF8_MAXLEN_FOLD_MULT)
-
-#define IN_BYTES (PL_curcop->op_private & HINT_BYTES)
+#define UTF8_MAXBYTES 13
+/* How wide can a single UTF-8 encoded character become in bytes.
+ * NOTE: Strictly speaking Perl's UTF-8 should not be called UTF-8
+ * since UTF-8 is an encoding of Unicode and given Unicode's current
+ * upper limit only four bytes is possible. Perl thinks of UTF-8
+ * as a way to encode non-negative integers in a binary format. */
+#define UTF8_MAXLEN UTF8_MAXBYTES
+
+/* The maximum number of UTF-8 bytes a single Unicode character can
+ * uppercase/lowercase/fold into; this number depends on the Unicode
+ * version. An example of maximal expansion is the U+03B0 which
+ * uppercases to U+03C5 U+0308 U+0301. The Unicode databases that
+ * tell these things are UnicodeData.txt, CaseFolding.txt, and
+ * SpecialCasing.txt. */
+#define UTF8_MAXBYTES_CASE 6
+
+/* A Unicode character can fold to up to 3 characters */
+#define UTF8_MAX_FOLD_CHAR_EXPAND 3
+
+#define IN_BYTES (CopHINTS_get(PL_curcop) & HINT_BYTES)
#define DO_UTF8(sv) (SvUTF8(sv) && !IN_BYTES)
+#define IN_UNI_8_BIT ( (CopHINTS_get(PL_curcop) & HINT_UNI_8_BIT) \
+ && ! IN_LOCALE_RUNTIME && ! IN_BYTES)
+
+#define UTF8_ALLOW_EMPTY 0x0001 /* Allow a zero length string */
-#define UTF8_ALLOW_EMPTY 0x0001
+/* Allow first byte to be a continuation byte */
#define UTF8_ALLOW_CONTINUATION 0x0002
+
+/* Allow second... bytes to be non-continuation bytes */
#define UTF8_ALLOW_NON_CONTINUATION 0x0004
-#define UTF8_ALLOW_FE_FF 0x0008
-#define UTF8_ALLOW_SHORT 0x0010
-#define UTF8_ALLOW_SURROGATE 0x0020
-#define UTF8_ALLOW_FFFF 0x0040 /* Allows also FFFE. */
-#define UTF8_ALLOW_LONG 0x0080
-#define UTF8_ALLOW_ANYUV (UTF8_ALLOW_EMPTY|UTF8_ALLOW_FE_FF|\
- UTF8_ALLOW_SURROGATE|\
- UTF8_ALLOW_FFFF|UTF8_ALLOW_LONG)
-#define UTF8_ALLOW_ANY 0x00FF
-#define UTF8_CHECK_ONLY 0x0200
+
+/* expecting more bytes than were available in the string */
+#define UTF8_ALLOW_SHORT 0x0008
+
+/* Overlong sequence; i.e., the code point can be specified in fewer bytes. */
+#define UTF8_ALLOW_LONG 0x0010
+
+#define UTF8_DISALLOW_SURROGATE 0x0020 /* Unicode surrogates */
+#define UTF8_WARN_SURROGATE 0x0040
+
+#define UTF8_DISALLOW_NONCHAR 0x0080 /* Unicode non-character */
+#define UTF8_WARN_NONCHAR 0x0100 /* code points */
+
+#define UTF8_DISALLOW_SUPER 0x0200 /* Super-set of Unicode: code */
+#define UTF8_WARN_SUPER 0x0400 /* points above the legal max */
+
+/* Code points which never were part of the original UTF-8 standard, the first
+ * byte of which is a FE or FF on ASCII platforms. */
+#define UTF8_DISALLOW_FE_FF 0x0800
+#define UTF8_WARN_FE_FF 0x1000
+
+#define UTF8_CHECK_ONLY 0x2000
+
+/* For backwards source compatibility. They do nothing, as the default now
+ * includes what they used to mean. The first one's meaning was to allow the
+ * just the single non-character 0xFFFF */
+#define UTF8_ALLOW_FFFF 0
+#define UTF8_ALLOW_SURROGATE 0
+
+#define UTF8_DISALLOW_ILLEGAL_INTERCHANGE (UTF8_DISALLOW_SUPER|UTF8_DISALLOW_NONCHAR|UTF8_DISALLOW_SURROGATE|UTF8_DISALLOW_FE_FF)
+#define UTF8_WARN_ILLEGAL_INTERCHANGE \
+ (UTF8_WARN_SUPER|UTF8_WARN_NONCHAR|UTF8_WARN_SURROGATE|UTF8_WARN_FE_FF)
+#define UTF8_ALLOW_ANY \
+ (~(UTF8_DISALLOW_ILLEGAL_INTERCHANGE|UTF8_WARN_ILLEGAL_INTERCHANGE))
+#define UTF8_ALLOW_ANYUV \
+ (UTF8_ALLOW_EMPTY \
+ & ~(UTF8_DISALLOW_ILLEGAL_INTERCHANGE|UTF8_WARN_ILLEGAL_INTERCHANGE))
+#define UTF8_ALLOW_DEFAULT (ckWARN(WARN_UTF8) ? 0 : \
+ UTF8_ALLOW_ANYUV)
+
+/* Surrogates, non-character code points and above-Unicode code points are
+ * problematic in some contexts. This allows code that needs to check for
+ * those to to quickly exclude the vast majority of code points it will
+ * encounter */
+#ifdef EBCDIC
+# define UTF8_FIRST_PROBLEMATIC_CODE_POINT_FIRST_BYTE UTF_TO_NATIVE(0xF1)
+#else
+# define UTF8_FIRST_PROBLEMATIC_CODE_POINT_FIRST_BYTE 0xED
+#endif
+
+/* ASCII EBCDIC I8
+ * U+D7FF: \xED\x9F\xBF \xF1\xB5\xBF\xBF last before surrogates
+ * U+D800: \xED\xA0\x80 \xF1\xB6\xA0\xA0 1st surrogate
+ * U+DFFF: \xED\xBF\xBF \xF1\xB7\xBF\xBF final surrogate
+ * U+E000: \xEE\x80\x80 \xF1\xB8\xA0\xA0 next after surrogates
+ */
+#ifdef EBCDIC /* Both versions assume well-formed UTF8 */
+# define UTF8_IS_SURROGATE(s) (*(s) == UTF_TO_NATIVE(0xF1) \
+ && (*((s) +1) == UTF_TO_NATIVE(0xB6)) || *((s) + 1) == UTF_TO_NATIVE(0xB7))
+#else
+# define UTF8_IS_SURROGATE(s) (*(s) == 0xED && *((s) + 1) >= 0xA0)
+#endif
+
+/* ASCII EBCDIC I8
+ * U+10FFFF: \xF4\x8F\xBF\xBF \xF9\xA1\xBF\xBF\xBF max legal Unicode
+ * U+110000: \xF4\x90\x80\x80 \xF9\xA2\xA0\xA0\xA0
+ * U+110001: \xF4\x90\x80\x81 \xF9\xA2\xA0\xA0\xA1
+ */
+#ifdef EBCDIC /* Both versions assume well-formed UTF8 */
+# define UTF8_IS_SUPER(s) (*(s) >= UTF_TO_NATIVE(0xF9) \
+ && (*(s) > UTF_TO_NATIVE(0xF9) || (*((s) + 1) >= UTF_TO_NATIVE(0xA2))))
+#else
+# define UTF8_IS_SUPER(s) (*(s) >= 0xF4 \
+ && (*(s) > 0xF4 || (*((s) + 1) >= 0x90)))
+#endif
+
+/* ASCII EBCDIC I8
+ * U+FDCF: \xEF\xB7\x8F \xF1\xBF\xAE\xAF last before non-char block
+ * U+FDD0: \xEF\xB7\x90 \xF1\xBF\xAE\xB0 first non-char in block
+ * U+FDEF: \xEF\xB7\xAF \xF1\xBF\xAF\xAF last non-char in block
+ * U+FDF0: \xEF\xB7\xB0 \xF1\xBF\xAF\xB0 first after non-char block
+ * U+FFFF: \xEF\xBF\xBF \xF1\xBF\xBF\xBF
+ * U+1FFFF: \xF0\x9F\xBF\xBF \xF3\xBF\xBF\xBF
+ * U+2FFFF: \xF0\xAF\xBF\xBF \xF5\xBF\xBF\xBF
+ * U+3FFFF: \xF0\xBF\xBF\xBF \xF7\xBF\xBF\xBF
+ * U+4FFFF: \xF1\x8F\xBF\xBF \xF8\xA9\xBF\xBF\xBF
+ * U+5FFFF: \xF1\x9F\xBF\xBF \xF8\xAB\xBF\xBF\xBF
+ * U+6FFFF: \xF1\xAF\xBF\xBF \xF8\xAD\xBF\xBF\xBF
+ * U+7FFFF: \xF1\xBF\xBF\xBF \xF8\xAF\xBF\xBF\xBF
+ * U+8FFFF: \xF2\x8F\xBF\xBF \xF8\xB1\xBF\xBF\xBF
+ * U+9FFFF: \xF2\x9F\xBF\xBF \xF8\xB3\xBF\xBF\xBF
+ * U+AFFFF: \xF2\xAF\xBF\xBF \xF8\xB5\xBF\xBF\xBF
+ * U+BFFFF: \xF2\xBF\xBF\xBF \xF8\xB7\xBF\xBF\xBF
+ * U+CFFFF: \xF3\x8F\xBF\xBF \xF8\xB9\xBF\xBF\xBF
+ * U+DFFFF: \xF3\x9F\xBF\xBF \xF8\xBB\xBF\xBF\xBF
+ * U+EFFFF: \xF3\xAF\xBF\xBF \xF8\xBD\xBF\xBF\xBF
+ * U+FFFFF: \xF3\xBF\xBF\xBF \xF8\xBF\xBF\xBF\xBF
+ * U+10FFFF: \xF4\x8F\xBF\xBF \xF9\xA1\xBF\xBF\xBF
+ */
+#define UTF8_IS_NONCHAR_(s) ( \
+ *(s) >= UTF8_FIRST_PROBLEMATIC_CODE_POINT_FIRST_BYTE \
+ && ! UTF8_IS_SUPER(s) \
+ && UTF8_IS_NONCHAR_GIVEN_THAT_NON_SUPER_AND_GE_FIRST_PROBLEMATIC(s) \
+
+#ifdef EBCDIC /* Both versions assume well-formed UTF8 */
+# define UTF8_IS_NONCHAR_GIVEN_THAT_NON_SUPER_AND_GE_PROBLEMATIC(s) \
+ ((*(s) == UTF_TO_NATIVE(0xF1) \
+ && (*((s) + 1) == UTF_TO_NATIVE(0xBF) \
+ && ((*((s) + 2) == UTF_TO_NATIVE(0xAE) \
+ && *((s) + 3) >= UTF_TO_NATIVE(0xB0)) \
+ || (*((s) + 2) == UTF_TO_NATIVE(0xAF) \
+ && *((s) + 3) <= UTF_TO_NATIVE(0xAF))))) \
+ || (UTF8SKIP(*(s)) > 3 \
+ /* (These were all derived by inspection and experimentation with an */ \
+ /* editor) The next line checks the next to final byte in the char */ \
+ && *((s) + UTF8SKIP(*(s)) - 2) == UTF_TO_NATIVE(0xBF) \
+ && *((s) + UTF8SKIP(*(s)) - 3) == UTF_TO_NATIVE(0xBF) \
+ && (NATIVE_TO_UTF(*((s) + UTF8SKIP(*(s)) - 4)) & 0x81) == 0x81 \
+ && (NATIVE_TO_UTF(*((s) + UTF8SKIP(*(s)) - 1)) & 0xBE) == 0XBE))
+#else
+# define UTF8_IS_NONCHAR_GIVEN_THAT_NON_SUPER_AND_GE_PROBLEMATIC(s) \
+ ((*(s) == 0xEF \
+ && ((*((s) + 1) == 0xB7 && (*((s) + 2) >= 0x90 && (*((s) + 2) <= 0xAF)))\
+ /* Gets U+FFF[EF] */ \
+ || (*((s) + 1) == 0xBF && ((*((s) + 2) & 0xBE) == 0xBE)))) \
+ || ((*((s) + 2) == 0xBF \
+ && (*((s) + 3) & 0xBE) == 0xBE \
+ /* Excludes things like U+10FFE = \xF0\x90\xBF\xBE */ \
+ && (*((s) + 1) & 0x8F) == 0x8F)))
+#endif
#define UNICODE_SURROGATE_FIRST 0xD800
#define UNICODE_SURROGATE_LAST 0xDFFF
#define UNICODE_REPLACEMENT 0xFFFD
#define UNICODE_BYTE_ORDER_MARK 0xFEFF
-#define UNICODE_ILLEGAL 0xFFFF
/* Though our UTF-8 encoding can go beyond this,
- * let's be conservative and do as Unicode 3.2 says. */
+ * let's be conservative and do as Unicode says. */
#define PERL_UNICODE_MAX 0x10FFFF
-#define UNICODE_ALLOW_SURROGATE 0x0001 /* Allow UTF-16 surrogates (EVIL) */
-#define UNICODE_ALLOW_FDD0 0x0002 /* Allow the U+FDD0...U+FDEF */
-#define UNICODE_ALLOW_FFFF 0x0004 /* Allow 0xFFF[EF], 0x1FFF[EF], ... */
-#define UNICODE_ALLOW_SUPER 0x0008 /* Allow past 10xFFFF */
-#define UNICODE_ALLOW_ANY 0x000F
+#define UNICODE_WARN_SURROGATE 0x0001 /* UTF-16 surrogates */
+#define UNICODE_WARN_NONCHAR 0x0002 /* Non-char code points */
+#define UNICODE_WARN_SUPER 0x0004 /* Above 0x10FFFF */
+#define UNICODE_WARN_FE_FF 0x0008 /* Above 0x10FFFF */
+#define UNICODE_DISALLOW_SURROGATE 0x0010
+#define UNICODE_DISALLOW_NONCHAR 0x0020
+#define UNICODE_DISALLOW_SUPER 0x0040
+#define UNICODE_DISALLOW_FE_FF 0x0080
+#define UNICODE_WARN_ILLEGAL_INTERCHANGE \
+ (UNICODE_WARN_SURROGATE|UNICODE_WARN_NONCHAR|UNICODE_WARN_SUPER)
+#define UNICODE_DISALLOW_ILLEGAL_INTERCHANGE \
+ (UNICODE_DISALLOW_SURROGATE|UNICODE_DISALLOW_NONCHAR|UNICODE_DISALLOW_SUPER)
+
+/* For backward source compatibility, as are now the default */
+#define UNICODE_ALLOW_SURROGATE 0
+#define UNICODE_ALLOW_SUPER 0
+#define UNICODE_ALLOW_ANY 0
#define UNICODE_IS_SURROGATE(c) ((c) >= UNICODE_SURROGATE_FIRST && \
(c) <= UNICODE_SURROGATE_LAST)
#define UNICODE_IS_REPLACEMENT(c) ((c) == UNICODE_REPLACEMENT)
#define UNICODE_IS_BYTE_ORDER_MARK(c) ((c) == UNICODE_BYTE_ORDER_MARK)
-#define UNICODE_IS_ILLEGAL(c) ((c) == UNICODE_ILLEGAL)
+#define UNICODE_IS_NONCHAR(c) ((c >= 0xFDD0 && c <= 0xFDEF) \
+ /* The other noncharacters end in FFFE or FFFF, which \
+ * the mask below catches both of, but beyond the last \
+ * official unicode code point, they aren't \
+ * noncharacters, since those aren't Unicode \
+ * characters at all */ \
+ || ((((c & 0xFFFE) == 0xFFFE)) && ! UNICODE_IS_SUPER(c)))
+#define UNICODE_IS_SUPER(c) ((c) > PERL_UNICODE_MAX)
+#define UNICODE_IS_FE_FF(c) ((c) > 0x7FFFFFFF)
#ifdef HAS_QUAD
# define UTF8_QUAD_MAX UINT64_C(0x1000000000)
#endif
-#define UTF8_IS_ASCII(c) UTF8_IS_INVARIANT(c)
-
-#define UNICODE_LATIN_SMALL_LETTER_SHARP_S 0x00DF
#define UNICODE_GREEK_CAPITAL_LETTER_SIGMA 0x03A3
#define UNICODE_GREEK_SMALL_LETTER_FINAL_SIGMA 0x03C2
#define UNICODE_GREEK_SMALL_LETTER_SIGMA 0x03C3
-
-#define EBCDIC_LATIN_SMALL_LETTER_SHARP_S 0x0059
+#define GREEK_SMALL_LETTER_MU 0x03BC
#define UNI_DISPLAY_ISPRINT 0x0001
#define UNI_DISPLAY_BACKSLASH 0x0002
#define UNI_DISPLAY_QQ (UNI_DISPLAY_ISPRINT|UNI_DISPLAY_BACKSLASH)
#define UNI_DISPLAY_REGEX (UNI_DISPLAY_ISPRINT|UNI_DISPLAY_BACKSLASH)
-#ifdef EBCDIC
-# define ANYOF_FOLD_SHARP_S(node, input, end) \
- (ANYOF_BITMAP_TEST(node, EBCDIC_LATIN_SMALL_LETTER_SHARP_S) && \
- (ANYOF_FLAGS(node) & ANYOF_UNICODE) && \
- (ANYOF_FLAGS(node) & ANYOF_FOLD) && \
- ((end) > (input) + 1) && \
- toLOWER((input)[0]) == 's' && \
- toLOWER((input)[1]) == 's')
-#else
-# define ANYOF_FOLD_SHARP_S(node, input, end) \
- (ANYOF_BITMAP_TEST(node, UNICODE_LATIN_SMALL_LETTER_SHARP_S) && \
- (ANYOF_FLAGS(node) & ANYOF_UNICODE) && \
- (ANYOF_FLAGS(node) & ANYOF_FOLD) && \
+#ifndef EBCDIC
+# define LATIN_SMALL_LETTER_SHARP_S 0x00DF
+# define LATIN_SMALL_LETTER_Y_WITH_DIAERESIS 0x00FF
+# define MICRO_SIGN 0x00B5
+#endif
+
+#define ANYOF_FOLD_SHARP_S(node, input, end) \
+ (ANYOF_BITMAP_TEST(node, LATIN_SMALL_LETTER_SHARP_S) && \
+ (ANYOF_FLAGS(node) & ANYOF_NONBITMAP) && \
+ (ANYOF_FLAGS(node) & ANYOF_LOC_NONBITMAP_FOLD) && \
((end) > (input) + 1) && \
toLOWER((input)[0]) == 's' && \
toLOWER((input)[1]) == 's')
-#endif
#define SHARP_S_SKIP 2
+
+#ifdef EBCDIC
+/* IS_UTF8_CHAR() is not ported to EBCDIC */
+#else
+#define IS_UTF8_CHAR_1(p) \
+ ((p)[0] <= 0x7F)
+#define IS_UTF8_CHAR_2(p) \
+ ((p)[0] >= 0xC2 && (p)[0] <= 0xDF && \
+ (p)[1] >= 0x80 && (p)[1] <= 0xBF)
+#define IS_UTF8_CHAR_3a(p) \
+ ((p)[0] == 0xE0 && \
+ (p)[1] >= 0xA0 && (p)[1] <= 0xBF && \
+ (p)[2] >= 0x80 && (p)[2] <= 0xBF)
+#define IS_UTF8_CHAR_3b(p) \
+ ((p)[0] >= 0xE1 && (p)[0] <= 0xEC && \
+ (p)[1] >= 0x80 && (p)[1] <= 0xBF && \
+ (p)[2] >= 0x80 && (p)[2] <= 0xBF)
+#define IS_UTF8_CHAR_3c(p) \
+ ((p)[0] == 0xED && \
+ (p)[1] >= 0x80 && (p)[1] <= 0xBF && \
+ (p)[2] >= 0x80 && (p)[2] <= 0xBF)
+/* In IS_UTF8_CHAR_3c(p) one could use
+ * (p)[1] >= 0x80 && (p)[1] <= 0x9F
+ * if one wanted to exclude surrogates. */
+#define IS_UTF8_CHAR_3d(p) \
+ ((p)[0] >= 0xEE && (p)[0] <= 0xEF && \
+ (p)[1] >= 0x80 && (p)[1] <= 0xBF && \
+ (p)[2] >= 0x80 && (p)[2] <= 0xBF)
+#define IS_UTF8_CHAR_4a(p) \
+ ((p)[0] == 0xF0 && \
+ (p)[1] >= 0x90 && (p)[1] <= 0xBF && \
+ (p)[2] >= 0x80 && (p)[2] <= 0xBF && \
+ (p)[3] >= 0x80 && (p)[3] <= 0xBF)
+#define IS_UTF8_CHAR_4b(p) \
+ ((p)[0] >= 0xF1 && (p)[0] <= 0xF3 && \
+ (p)[1] >= 0x80 && (p)[1] <= 0xBF && \
+ (p)[2] >= 0x80 && (p)[2] <= 0xBF && \
+ (p)[3] >= 0x80 && (p)[3] <= 0xBF)
+/* In IS_UTF8_CHAR_4c(p) one could use
+ * (p)[0] == 0xF4
+ * if one wanted to stop at the Unicode limit U+10FFFF.
+ * The 0xF7 allows us to go to 0x1fffff (0x200000 would
+ * require five bytes). Not doing any further code points
+ * since that is not needed (and that would not be strict
+ * UTF-8, anyway). The "slow path" in Perl_is_utf8_char()
+ * will take care of the "extended UTF-8". */
+#define IS_UTF8_CHAR_4c(p) \
+ ((p)[0] >= 0xF4 && (p)[0] <= 0xF7 && \
+ (p)[1] >= 0x80 && (p)[1] <= 0xBF && \
+ (p)[2] >= 0x80 && (p)[2] <= 0xBF && \
+ (p)[3] >= 0x80 && (p)[3] <= 0xBF)
+
+#define IS_UTF8_CHAR_3(p) \
+ (IS_UTF8_CHAR_3a(p) || \
+ IS_UTF8_CHAR_3b(p) || \
+ IS_UTF8_CHAR_3c(p) || \
+ IS_UTF8_CHAR_3d(p))
+#define IS_UTF8_CHAR_4(p) \
+ (IS_UTF8_CHAR_4a(p) || \
+ IS_UTF8_CHAR_4b(p) || \
+ IS_UTF8_CHAR_4c(p))
+
+/* IS_UTF8_CHAR(p) is strictly speaking wrong (not UTF-8) because it
+ * (1) allows UTF-8 encoded UTF-16 surrogates
+ * (2) it allows code points past U+10FFFF.
+ * The Perl_is_utf8_char() full "slow" code will handle the Perl
+ * "extended UTF-8". */
+#define IS_UTF8_CHAR(p, n) \
+ ((n) == 1 ? IS_UTF8_CHAR_1(p) : \
+ (n) == 2 ? IS_UTF8_CHAR_2(p) : \
+ (n) == 3 ? IS_UTF8_CHAR_3(p) : \
+ (n) == 4 ? IS_UTF8_CHAR_4(p) : 0)
+
+#define IS_UTF8_CHAR_FAST(n) ((n) <= 4)
+
+#endif /* IS_UTF8_CHAR() for UTF-8 */
+
+/*
+ * Local variables:
+ * c-indentation-style: bsd
+ * c-basic-offset: 4
+ * indent-tabs-mode: t
+ * End:
+ *
+ * ex: set ts=8 sts=4 sw=4 noet:
+ */
https://perl5.git.perl.org / perl5.git / blobdiff