diff options
Diffstat (limited to 'utf8.h')
| -rw-r--r-- | utf8.h | 93 |
1 files changed, 11 insertions, 82 deletions
@@ -93,6 +93,7 @@ EXTCONST unsigned char PL_utf8skip[]; END_EXTERN_C +#include "regcharclass.h" #include "unicode_constants.h" /* Native character to iso-8859-1 */ @@ -346,35 +347,11 @@ 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))) - /* <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 @@ -389,60 +366,12 @@ Perl's extended UTF-8 means we can have start bytes up to FF. && (*(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 |