# define USE_UTF8_IN_NAMES (PL_hints & HINT_UTF8)
#endif
+#define to_uni_fold(c, p, lenp) _to_uni_fold_flags(c, p, lenp, 1)
+#define to_utf8_fold(c, p, lenp) _to_utf8_fold_flags(c, p, lenp, 1)
+
/* 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:
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+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+D000..U+D7FF ED 80..9F 80..BF
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+40000..U+FFFFF F1..F3 80..BF 80..BF 80..BF
U+100000..U+10FFFF F4 80..8F 80..BF 80..BF
-Note the gaps before the 2nd Byte entries above marked by '*'. These are
+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
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)
/* 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 && (((U8)c) <= 0xfd))
+#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 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))
* 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)|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_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)))
* 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
+ * SpecialCasing.txt. The value is 6 for strict Unicode characters, but it has
+ * to be as big as Perl allows for a single character */
+#define UTF8_MAXBYTES_CASE UTF8_MAXBYTES
+
+/* 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
+#define UTF8_ALLOW_EMPTY 0x0001 /* Allow a zero length string */
+
+/* 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 /* Allow FE or FF start bytes, \
- yields above 0x7fffFFFF */
-#define UTF8_ALLOW_SHORT 0x0010 /* expecting more bytes */
-#define UTF8_ALLOW_SURROGATE 0x0020
-#define UTF8_ALLOW_FFFF 0x0040 /* Allow UNICODE_ILLEGAL */
-#define UTF8_ALLOW_LONG 0x0080 /* expecting fewer bytes */
-#define UTF8_ALLOW_ANYUV (UTF8_ALLOW_EMPTY|UTF8_ALLOW_FE_FF|\
- UTF8_ALLOW_SURROGATE|UTF8_ALLOW_FFFF)
-#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 5.1 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 U+FFF[EF], U+1FFF[EF], ... */
-#define UNICODE_ALLOW_SUPER 0x0008 /* Allow past 0x10FFFF */
-#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_GREEK_CAPITAL_LETTER_SIGMA 0x03A3
#define UNICODE_GREEK_SMALL_LETTER_FINAL_SIGMA 0x03C2
#define UNICODE_GREEK_SMALL_LETTER_SIGMA 0x03C3
+#define GREEK_SMALL_LETTER_MU 0x03BC
+#define GREEK_CAPITAL_LETTER_MU 0x039C /* Upper and title case of MICRON */
+#define LATIN_CAPITAL_LETTER_Y_WITH_DIAERESIS 0x0178 /* Also is title case */
+#define LATIN_CAPITAL_LETTER_SHARP_S 0x1E9E
#define UNI_DISPLAY_ISPRINT 0x0001
#define UNI_DISPLAY_BACKSLASH 0x0002
# define LATIN_SMALL_LETTER_SHARP_S 0x00DF
# define LATIN_SMALL_LETTER_Y_WITH_DIAERESIS 0x00FF
# define MICRO_SIGN 0x00B5
+# define LATIN_CAPITAL_LETTER_A_WITH_RING_ABOVE 0x00C5
+# define LATIN_SMALL_LETTER_A_WITH_RING_ABOVE 0x00E5
#endif
#define ANYOF_FOLD_SHARP_S(node, input, end) \
(ANYOF_BITMAP_TEST(node, LATIN_SMALL_LETTER_SHARP_S) && \
- (ANYOF_FLAGS(node) & ANYOF_UNICODE) && \
- (ANYOF_FLAGS(node) & ANYOF_FOLD) && \
+ (ANYOF_NONBITMAP(node)) && \
+ (ANYOF_FLAGS(node) & ANYOF_LOC_NONBITMAP_FOLD) && \
((end) > (input) + 1) && \
toLOWER((input)[0]) == 's' && \
toLOWER((input)[1]) == 's')
* 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)[0] >= 0xF4 && (p)[0] <= 0xF7 && \
(p)[1] >= 0x80 && (p)[1] <= 0xBF && \
(p)[2] >= 0x80 && (p)[2] <= 0xBF && \
(p)[3] >= 0x80 && (p)[3] <= 0xBF)