X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/28936164408fd41cfaa353665e07fdb257254b20..601c6a23362ab7d7765387e36ad280317ff4459c:/utf8.h diff --git a/utf8.h b/utf8.h index ad2b339..3fbc28a 100644 --- a/utf8.h +++ b/utf8.h @@ -8,6 +8,9 @@ * */ +#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. */ @@ -20,8 +23,14 @@ /* For to_utf8_fold_flags, q.v. */ #define FOLD_FLAGS_LOCALE 0x1 #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, 1) +#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) #define to_utf8_lower(a,b,c) _to_utf8_lower_flags(a,b,c,0, NULL) @@ -87,12 +96,17 @@ EXTCONST unsigned char PL_utf8skip[]; 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) @@ -102,6 +116,7 @@ END_EXTERN_C /* 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 /* @@ -153,12 +168,16 @@ 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_START(c) (((U8)c) >= 0xc2) -#define UTF8_IS_CONTINUATION(c) (((U8)c) >= 0x80 && (((U8)c) <= 0xbf)) +#define UTF8_IS_CONTINUATION(c) ((((U8)c) & 0xC0) == 0x80) #define UTF8_IS_CONTINUED(c) (((U8)c) & 0x80) -/* Masking with 0xfe allows low bit to be 0 or 1; thus this matches 0xc[23] */ +/* Use UTF8_IS_NEXT_CHAR_DOWNGRADEABLE() instead if the input isn't known to + * be well-formed. 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) +#define UTF8_IS_ABOVE_LATIN1(c) ((U8)(c) >= 0xc4) + #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. @@ -175,7 +194,8 @@ Perl's extended UTF-8 means we can have start bytes up to FF. * 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 */ #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 : \ @@ -195,6 +215,25 @@ Perl's extended UTF-8 means we can have start bytes up to FF. (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 @@ -204,7 +243,13 @@ Perl's extended UTF-8 means we can have start bytes up to FF. #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 @@ -226,8 +271,10 @@ Perl's extended UTF-8 means we can have start bytes up to FF. * 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))) @@ -253,23 +300,8 @@ Perl's extended UTF-8 means we can have start bytes up to FF. #define isIDFIRST_lazy(p) isIDFIRST_lazy_if(p,1) #define isALNUM_lazy(p) isALNUM_lazy_if(p,1) -#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 @@ -331,35 +363,11 @@ Perl's extended UTF-8 means we can have start bytes up to FF. * 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))) - /* points to one beyond the end of the string that starts at */ -# 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 @@ -367,67 +375,19 @@ Perl's extended UTF-8 means we can have start bytes up to FF. * 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(*(s)) >= 0xF9 \ + && (NATIVE_TO_I8(*(s)) > 0xF9) || (NATIVE_TO_I8(*((s)) + 1 >= 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 +/* 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 @@ -446,10 +406,10 @@ Perl's extended UTF-8 means we can have start bytes up to FF. #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 @@ -474,6 +434,14 @@ Perl's extended UTF-8 means we can have start bytes up to FF. # 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 @@ -481,20 +449,15 @@ Perl's extended UTF-8 means we can have start bytes up to FF. #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 LATIN_SMALL_LETTER_LONG_S 0x017F +#define KELVIN_SIGN 0x212A +#define ANGSTROM_SIGN 0x212B #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) -#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)) && \ @@ -504,118 +467,72 @@ Perl's extended UTF-8 means we can have start bytes up to FF. 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 */ +/*** 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 )\ + : 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 )\ + : 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 ) \ + : 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: * c-indentation-style: bsd * c-basic-offset: 4 - * indent-tabs-mode: t + * indent-tabs-mode: nil * End: * - * ex: set ts=8 sts=4 sw=4 noet: + * ex: set ts=8 sts=4 sw=4 et: */