/* utf8.h
*
+ * This file contains definitions for use with the UTF-8 encoding. It
+ * actually also works with the variant UTF-8 encoding called UTF-EBCDIC, and
+ * hides almost all of the differences between these from the caller. In other
+ * words, someone should #include this file, and if the code is being compiled
+ * on an EBCDIC platform, things should mostly just work.
+ *
* Copyright (C) 2000, 2001, 2002, 2005, 2006, 2007, 2009,
* 2010, 2011 by Larry Wall and others
*
*
*/
+#ifndef H_UTF8 /* Guard against recursive inclusion */
+#define H_UTF8 1
+
/* Use UTF-8 as the default script encoding?
* Turning this on will break scripts having non-UTF-8 binary
* data (such as Latin-1) in string literals. */
#define FOLD_FLAGS_FULL 0x2
#define FOLD_FLAGS_NOMIX_ASCII 0x4
+/* For _core_swash_init(), internal core use only */
+#define _CORE_SWASH_INIT_USER_DEFINED_PROPERTY 0x1
+#define _CORE_SWASH_INIT_RETURN_IF_UNDEF 0x2
+#define _CORE_SWASH_INIT_ACCEPT_INVLIST 0x4
+
#define to_uni_fold(c, p, lenp) _to_uni_fold_flags(c, p, lenp, FOLD_FLAGS_FULL)
#define to_utf8_fold(c, p, lenp) _to_utf8_fold_flags(c, p, lenp, \
FOLD_FLAGS_FULL, NULL)
END_EXTERN_C
+#include "regcharclass.h"
+#include "unicode_constants.h"
+
/* Native character to iso-8859-1 */
#define NATIVE_TO_ASCII(ch) (ch)
#define ASCII_TO_NATIVE(ch) (ch)
/* Transform after encoding */
#define NATIVE_TO_UTF(ch) (ch)
+#define NATIVE_TO_I8(ch) NATIVE_TO_UTF(ch) /* a clearer synonym */
#define UTF_TO_NATIVE(ch) (ch)
+#define I8_TO_NATIVE(ch) UTF_TO_NATIVE(ch)
/* Transforms in wide UV chars */
#define UNI_TO_NATIVE(ch) (ch)
#define NATIVE_TO_UNI(ch) (ch)
/* As there are no translations, avoid the function wrapper */
#define utf8n_to_uvchr utf8n_to_uvuni
+#define valid_utf8_to_uvchr valid_utf8_to_uvuni
#define uvchr_to_utf8 uvuni_to_utf8
/*
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).
+(and that is what Perl does). The non-shortest ones are called 'overlongs'.
*/
*/
+/* Is the representation of the Unicode code point 'c' the same regardless of
+ * being encoded in UTF-8 or not? */
#define UNI_IS_INVARIANT(c) (((UV)c) < 0x80)
-#define UTF8_IS_START(c) (((U8)c) >= 0xc2)
-#define UTF8_IS_CONTINUATION(c) (((U8)c) >= 0x80 && (((U8)c) <= 0xbf))
+
+/* Is the UTF8-encoded byte 'c' part of a variant sequence in UTF-8? This is
+ * the inverse of UTF8_IS_INVARIANT */
#define UTF8_IS_CONTINUED(c) (((U8)c) & 0x80)
-/* Masking with 0xfe allows low bit to be 0 or 1; thus this matches 0xc[23] */
-#define UTF8_IS_DOWNGRADEABLE_START(c) (((U8)c & 0xfe) == 0xc2)
+/* Is the byte 'c' the first byte of a multi-byte UTF8-8 encoded sequence?
+ * This doesn't catch invariants (they are single-byte). It also excludes the
+ * illegal overlong sequences that begin with C0 and C1. */
+#define UTF8_IS_START(c) (((U8)c) >= 0xc2)
+
+/* Is the byte 'c' part of a multi-byte UTF8-8 encoded sequence, and not the
+ * first byte thereof? */
+#define UTF8_IS_CONTINUATION(c) ((((U8)c) & 0xC0) == 0x80)
+
+/* Is the UTF8-encoded byte 'c' the first byte of a two byte sequence? Use
+ * UTF8_IS_NEXT_CHAR_DOWNGRADEABLE() instead if the input isn't known to
+ * be well-formed. Masking with 0xfe allows the low bit to be 0 or 1; thus
+ * this matches 0xc[23]. */
+#define UTF8_IS_DOWNGRADEABLE_START(c) (((U8)(c) & 0xfe) == 0xc2)
+/* Is the UTF8-encoded byte 'c' the first byte of a sequence of bytes that
+ * represent a code point > 255? */
+#define UTF8_IS_ABOVE_LATIN1(c) ((U8)(c) >= 0xc4)
+
+/* This defines the 1-bits that are to be in the first byte of a multi-byte
+ * UTF-8 encoded character that give the number of bytes that comprise the
+ * character.
+ * */
#define UTF_START_MARK(len) (((len) > 7) ? 0xFF : (0xFE << (7-(len))))
/* Masks out the initial one bits in a start byte, leaving the real data ones.
* Doesn't work on an invariant byte */
#define UTF_START_MASK(len) (((len) >= 7) ? 0x00 : (0x1F >> ((len)-2)))
+/* This defines the bits that are to be in the continuation bytes of a multi-byte
+ * UTF-8 encoded character that indicate it is a continuation byte. */
#define UTF_CONTINUATION_MARK 0x80
+
+/* This is the number of low-order bits a continuation byte in a UTF-8 encoded
+ * sequence contributes to the specification of the code point. In the bit
+ * maps above, you see that the first 2 bits are a constant '10', leaving 6 of
+ * real information */
#define UTF_ACCUMULATION_SHIFT 6
/* 2**UTF_ACCUMULATION_SHIFT - 1 */
#define UTF_CONTINUATION_MASK ((U8)0x3f)
-/* This sets the UTF_CONTINUATION_MASK in the upper bits of a word. If a value
- * is anded with it, and the result is non-zero, then using the original value
- * in UTF8_ACCUMULATE will overflow, shifting bits off the left */
+/* If a value is anded with this, and the result is non-zero, then using the
+ * original value in UTF8_ACCUMULATE will overflow, shifting bits off the left
+ * */
#define UTF_ACCUMULATION_OVERFLOW_MASK \
- (((UV) UTF_CONTINUATION_MASK) << ((sizeof(UV) * CHARBITS) - UTF_ACCUMULATION_SHIFT))
+ (((UV) UTF_CONTINUATION_MASK) << ((sizeof(UV) * CHARBITS) \
+ - UTF_ACCUMULATION_SHIFT))
#ifdef HAS_QUAD
#define UNISKIP(uv) ( (uv) < 0x80 ? 1 : \
(uv) < 0x80000000 ? 6 : 7 )
#endif
+/* 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 Unicode's upper limit, 0x10FFFF, can be
+ * expressed with 4 bytes. However, Perl thinks of UTF-8 as a way to encode
+ * non-negative integers in a binary format, even those above Unicode */
+#define UTF8_MAXBYTES 13
+
+/* The maximum number of UTF-8 bytes a single Unicode character can
+ * uppercase/lowercase/fold into. Unicode guarantees that the maximum
+ * expansion is 3 characters. On ASCIIish platforms, the highest Unicode
+ * character occupies 4 bytes, therefore this number would be 12, but this is
+ * smaller than the maximum width a single above-Unicode character can occupy,
+ * so use that instead */
+#if UTF8_MAXBYTES < 12
+#error UTF8_MAXBYTES must be at least 12
+#endif
+
+#define UTF8_MAXBYTES_CASE UTF8_MAXBYTES
+
#endif /* EBCDIC vs ASCII */
/* Rest of these are attributes of Unicode and perl's internals rather than the
#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))
+#define UTF8_ACCUMULATE(old, new) (((old) << UTF_ACCUMULATION_SHIFT) \
+ | (((U8)new) & UTF_CONTINUATION_MASK))
+
+/* This works in the face of malformed UTF-8. */
+#define UTF8_IS_NEXT_CHAR_DOWNGRADEABLE(s, e) (UTF8_IS_DOWNGRADEABLE_START(*s) \
+ && ( (e) - (s) > 1) \
+ && UTF8_IS_CONTINUATION(*((s)+1)))
/* 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
UTF8_ACCUMULATE((NATIVE_TO_UTF(HI) & UTF_START_MASK(2)), \
NATIVE_TO_UTF(LO))
+/* How many bytes in the UTF-8 encoded character whose first (perhaps only)
+ * byte is pointed to by 's' */
#define UTF8SKIP(s) PL_utf8skip[*(const U8*)(s)]
+/* Is the byte 'c' the same character when encoded in UTF-8 as when not. This
+ * works on both UTF-8 encoded strings and non-encoded, as it returns TRUE in
+ * each for the exact same set of bit patterns. (And it works on any byte in a
+ * UTF-8 encoded string) */
#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 */
* 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_nocast(c) NATIVE_TO_I8(((c) \
+ >> UTF_ACCUMULATION_SHIFT) | (0xFF & UTF_START_MARK(2)))
+#define UTF8_TWO_BYTE_LO_nocast(c) NATIVE_TO_I8(((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)))
#define isIDFIRST_lazy_if(p,UTF) ((IN_BYTES || !UTF ) \
? isIDFIRST(*(p)) \
: isIDFIRST_utf8((const U8*)p))
-#define isALNUM_lazy_if(p,UTF) ((IN_BYTES || (!UTF )) \
- ? isALNUM(*(p)) \
- : isALNUM_utf8((const U8*)p))
-
-#define isIDFIRST_lazy(p) isIDFIRST_lazy_if(p,1)
-#define isALNUM_lazy(p) isALNUM_lazy_if(p,1)
+#define isWORDCHAR_lazy_if(p,UTF) ((IN_BYTES || (!UTF )) \
+ ? isWORDCHAR(*(p)) \
+ : isWORDCHAR_utf8((const U8*)p))
+#define isALNUM_lazy_if(p,UTF) isWORDCHAR_lazy_if(p,UTF)
-#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. 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
* 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
+#define UTF8_FIRST_PROBLEMATIC_CODE_POINT_FIRST_BYTE \
+ FIRST_SURROGATE_UTF8_FIRST_BYTE
-/* 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)))
- /* <send> points to one beyond the end of the string that starts at <s> */
-# define UTF8_IS_REPLACEMENT(s, send) (*(s) == UTF_TO_NATIVE(0xEF) \
- && (send - s) >= 4 \
- && *((s) + 1) == UTF_TO_NATIVE(0xBF) \
- && *((s) + 2) == UTF_TO_NATIVE(0xBF) \
- && *((s) + 3) == UTF_TO_NATIVE(0xBD)
-#else
-# define UTF8_IS_SURROGATE(s) (*(s) == 0xED && *((s) + 1) >= 0xA0)
-# define UTF8_IS_REPLACEMENT(s, send) (*(s) == 0xEF \
- && (send - s) >= 3 \
- && *((s) + 1) == 0xBF \
- && *((s) + 2) == 0xBD)
-#endif
+#define UTF8_IS_SURROGATE(s) cBOOL(is_SURROGATE_utf8(s))
+#define UTF8_IS_REPLACEMENT(s, send) cBOOL(is_REPLACEMENT_utf8_safe(s,send))
/* ASCII EBCDIC I8
* U+10FFFF: \xF4\x8F\xBF\xBF \xF9\xA1\xBF\xBF\xBF max legal Unicode
* 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))))
+# define UTF8_IS_SUPER(s) (NATIVE_TO_I8(* (U8*) (s)) >= 0xF9 \
+ && (NATIVE_TO_I8(* (U8*) (s)) > 0xF9 \
+ || (NATIVE_TO_I8(* (U8*) ((s)) + 1 >= 0xA2))))
#else
-# define UTF8_IS_SUPER(s) (*(s) >= 0xF4 \
- && (*(s) > 0xF4 || (*((s) + 1) >= 0x90)))
+# define UTF8_IS_SUPER(s) (*(U8*) (s) >= 0xF4 \
+ && (*(U8*) (s) > 0xF4 || (*((U8*) (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
+/* These are now machine generated, and the 'given' clause is no longer
+ * applicable */
+#define UTF8_IS_NONCHAR_GIVEN_THAT_NON_SUPER_AND_GE_PROBLEMATIC(s) \
+ cBOOL(is_NONCHAR_utf8(s))
+#define UTF8_IS_NONCHAR_(s) \
+ UTF8_IS_NONCHAR_GIVEN_THAT_NON_SUPER_AND_GE_PROBLEMATIC(s)
#define UNICODE_SURROGATE_FIRST 0xD800
#define UNICODE_SURROGATE_LAST 0xDFFF
#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)
+#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 UTF8_QUAD_MAX UINT64_C(0x1000000000)
#endif
+#define LATIN_SMALL_LETTER_SHARP_S LATIN_SMALL_LETTER_SHARP_S_NATIVE
+#define LATIN_SMALL_LETTER_Y_WITH_DIAERESIS \
+ LATIN_SMALL_LETTER_Y_WITH_DIAERESIS_NATIVE
+#define MICRO_SIGN MICRO_SIGN_NATIVE
+#define LATIN_CAPITAL_LETTER_A_WITH_RING_ABOVE \
+ LATIN_CAPITAL_LETTER_A_WITH_RING_ABOVE_NATIVE
+#define LATIN_SMALL_LETTER_A_WITH_RING_ABOVE \
+ LATIN_SMALL_LETTER_A_WITH_RING_ABOVE_NATIVE
#define UNICODE_GREEK_CAPITAL_LETTER_SIGMA 0x03A3
#define UNICODE_GREEK_SMALL_LETTER_FINAL_SIGMA 0x03C2
#define UNICODE_GREEK_SMALL_LETTER_SIGMA 0x03C3
#define UNI_DISPLAY_QQ (UNI_DISPLAY_ISPRINT|UNI_DISPLAY_BACKSLASH)
#define UNI_DISPLAY_REGEX (UNI_DISPLAY_ISPRINT|UNI_DISPLAY_BACKSLASH)
-#ifndef EBCDIC
-# 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_NONBITMAP(node)) && \
toLOWER((input)[1]) == 's')
#define SHARP_S_SKIP 2
-#ifndef EBCDIC
/* If you want to exclude surrogates, and beyond legal Unicode, see the blame
* log for earlier versions which gave details for these */
-# 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] <= 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)
-/* 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_4b(p) \
- ((p)[0] >= 0xF1 && (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))
-# define IS_UTF8_CHAR_4(p) \
- (IS_UTF8_CHAR_4a(p) || \
- IS_UTF8_CHAR_4b(p))
+
+#ifndef EBCDIC
+/* This was generated by regen/regcharclass.pl, and then moved here. The lines
+ * that generated it were then commented out. This was done solely because it
+ * takes on the order of 10 minutes to generate, and is never going to change.
+ * The EBCDIC equivalent hasn't been commented out in regcharclass.pl, so it
+ * should generate and run the correct stuff */
+/*
+ UTF8_CHAR: Matches utf8 from 1 to 4 bytes
+
+ 0x0 - 0x1FFFFF
+*/
+/*** GENERATED CODE ***/
+#define is_UTF8_CHAR_utf8_safe(s,e) \
+( ((e)-(s) > 3) ? \
+ ( ( ( ((U8*)s)[0] & 0x80 ) == 0x00 ) ? 1 \
+ : ( 0xC2 <= ((U8*)s)[0] && ((U8*)s)[0] <= 0xDF ) ? \
+ ( ( ( ((U8*)s)[1] & 0xC0 ) == 0x80 ) ? 2 : 0 ) \
+ : ( 0xE0 == ((U8*)s)[0] ) ? \
+ ( ( ( ( ((U8*)s)[1] & 0xE0 ) == 0xA0 ) && ( ( ((U8*)s)[2] & 0xC0 ) == 0x80 ) ) ? 3 : 0 )\
+ : ( 0xE1 <= ((U8*)s)[0] && ((U8*)s)[0] <= 0xEF ) ? \
+ ( ( ( ( ((U8*)s)[1] & 0xC0 ) == 0x80 ) && ( ( ((U8*)s)[2] & 0xC0 ) == 0x80 ) ) ? 3 : 0 )\
+ : ( 0xF0 == ((U8*)s)[0] ) ? \
+ ( ( ( ( 0x90 <= ((U8*)s)[1] && ((U8*)s)[1] <= 0xBF ) && ( ( ((U8*)s)[2] & 0xC0 ) == 0x80 ) ) && ( ( ((U8*)s)[3] & 0xC0 ) == 0x80 ) ) ? 4 : 0 )\
+ : ( ( ( ( 0xF1 <= ((U8*)s)[0] && ((U8*)s)[0] <= 0xF7 ) && ( ( ((U8*)s)[1] & 0xC0 ) == 0x80 ) ) && ( ( ((U8*)s)[2] & 0xC0 ) == 0x80 ) ) && ( ( ((U8*)s)[3] & 0xC0 ) == 0x80 ) ) ? 4 : 0 )\
+: ((e)-(s) > 2) ? \
+ ( ( ( ((U8*)s)[0] & 0x80 ) == 0x00 ) ? 1 \
+ : ( 0xC2 <= ((U8*)s)[0] && ((U8*)s)[0] <= 0xDF ) ? \
+ ( ( ( ((U8*)s)[1] & 0xC0 ) == 0x80 ) ? 2 : 0 ) \
+ : ( 0xE0 == ((U8*)s)[0] ) ? \
+ ( ( ( ( ((U8*)s)[1] & 0xE0 ) == 0xA0 ) && ( ( ((U8*)s)[2] & 0xC0 ) == 0x80 ) ) ? 3 : 0 )\
+ : ( ( ( 0xE1 <= ((U8*)s)[0] && ((U8*)s)[0] <= 0xEF ) && ( ( ((U8*)s)[1] & 0xC0 ) == 0x80 ) ) && ( ( ((U8*)s)[2] & 0xC0 ) == 0x80 ) ) ? 3 : 0 )\
+: ((e)-(s) > 1) ? \
+ ( ( ( ((U8*)s)[0] & 0x80 ) == 0x00 ) ? 1 \
+ : ( ( 0xC2 <= ((U8*)s)[0] && ((U8*)s)[0] <= 0xDF ) && ( ( ((U8*)s)[1] & 0xC0 ) == 0x80 ) ) ? 2 : 0 )\
+: ((e)-(s) > 0) ? \
+ ( ( ((U8*)s)[0] & 0x80 ) == 0x00 ) \
+: 0 )
+#endif
/* 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)
-
-#else /* EBCDIC */
-
-/* This is an attempt to port IS_UTF8_CHAR to EBCDIC based on eyeballing.
- * untested. If want to exclude surrogates and above-Unicode, see the
- * definitions for UTF8_IS_SURROGATE and UTF8_IS_SUPER */
-# define IS_UTF8_CHAR_1(p) \
- (NATIVE_TO_ASCII((p)[0]) <= 0x9F)
-# define IS_UTF8_CHAR_2(p) \
- (NATIVE_TO_I8((p)[0]) >= 0xC5 && NATIVE_TO_I8((p)[0]) <= 0xDF && \
- NATIVE_TO_I8((p)[1]) >= 0xA0 && NATIVE_TO_I8((p)[1]) <= 0xBF)
-# define IS_UTF8_CHAR_3(p) \
- (NATIVE_TO_I8((p)[0]) == 0xE1 && NATIVE_TO_I8((p)[1]) <= 0xEF && \
- NATIVE_TO_I8((p)[1]) >= 0xA0 && NATIVE_TO_I8((p)[1]) <= 0xBF && \
- NATIVE_TO_I8((p)[2]) >= 0xA0 && NATIVE_TO_I8((p)[2]) <= 0xBF)
-# define IS_UTF8_CHAR_4a(p) \
- (NATIVE_TO_I8((p)[0]) == 0xF0 && \
- NATIVE_TO_I8((p)[1]) >= 0xB0 && NATIVE_TO_I8((p)[1]) <= 0xBF && \
- NATIVE_TO_I8((p)[2]) >= 0xA0 && NATIVE_TO_I8((p)[2]) <= 0xBF && \
- NATIVE_TO_I8((p)[3]) >= 0xA0 && NATIVE_TO_I8((p)[3]) <= 0xBF)
-# define IS_UTF8_CHAR_4b(p) \
- (NATIVE_TO_I8((p)[0]) >= 0xF1 && NATIVE_TO_I8((p)[0]) <= 0xF7 && \
- NATIVE_TO_I8((p)[1]) >= 0xA0 && NATIVE_TO_I8((p)[1]) <= 0xBF && \
- NATIVE_TO_I8((p)[2]) >= 0xA0 && NATIVE_TO_I8((p)[2]) <= 0xBF && \
- NATIVE_TO_I8((p)[3]) >= 0xA0 && NATIVE_TO_I8((p)[3]) <= 0xBF)
-# define IS_UTF8_CHAR_5a(p) \
- (NATIVE_TO_I8((p)[0]) == 0xF8 && \
- NATIVE_TO_I8((p)[1]) >= 0xA8 && NATIVE_TO_I8((p)[1]) <= 0xBF && \
- NATIVE_TO_I8((p)[1]) >= 0xA0 && NATIVE_TO_I8((p)[1]) <= 0xBF && \
- NATIVE_TO_I8((p)[2]) >= 0xA0 && NATIVE_TO_I8((p)[2]) <= 0xBF && \
- NATIVE_TO_I8((p)[3]) >= 0xA0 && NATIVE_TO_I8((p)[3]) <= 0xBF)
-# define IS_UTF8_CHAR_5b(p) \
- (NATIVE_TO_I8((p)[0]) >= 0xF9 && NATIVE_TO_I8((p)[1]) <= 0xFB && \
- NATIVE_TO_I8((p)[1]) >= 0xA0 && NATIVE_TO_I8((p)[1]) <= 0xBF && \
- NATIVE_TO_I8((p)[1]) >= 0xA0 && NATIVE_TO_I8((p)[1]) <= 0xBF && \
- NATIVE_TO_I8((p)[2]) >= 0xA0 && NATIVE_TO_I8((p)[2]) <= 0xBF && \
- NATIVE_TO_I8((p)[3]) >= 0xA0 && NATIVE_TO_I8((p)[3]) <= 0xBF)
-
-# define IS_UTF8_CHAR_4(p) \
- (IS_UTF8_CHAR_4a(p) || \
- IS_UTF8_CHAR_4b(p))
-# define IS_UTF8_CHAR_5(p) \
- (IS_UTF8_CHAR_5a(p) || \
- IS_UTF8_CHAR_5b(p))
-# 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) : \
- (n) == 5 ? IS_UTF8_CHAR_5(p) : 0)
+#define IS_UTF8_CHAR(p, n) (is_UTF8_CHAR_utf8_safe(p, (p) + (n)) == n)
+/* regen/regcharclass.pl generates is_UTF8_CHAR_utf8_safe() macros for up to
+ * these number of bytes. So this has to be coordinated with it */
+#ifdef EBCDIC
# define IS_UTF8_CHAR_FAST(n) ((n) <= 5)
+#else
+# define IS_UTF8_CHAR_FAST(n) ((n) <= 4)
+#endif
-#endif /* IS_UTF8_CHAR() for UTF-8 */
+#endif /* H_UTF8 */
/*
* Local variables:
https://perl5.git.perl.org / perl5.git / blobdiff