X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=utf8.h;h=01c6199f93449ccf829f368b1336e0b2ca86477c;hb=b050c948e7b63d3513ca9c148115d3ea439bf57f;hp=bafdc57f97cfa0d75d6f63a82f40208e98687d1b;hpb=421a8bf2e4d7253d8eb0dc22451e55b15fc6c1e2;p=p5sagit%2Fp5-mst-13.2.git diff --git a/utf8.h b/utf8.h index bafdc57..01c6199 100644 --- a/utf8.h +++ b/utf8.h @@ -1,12 +1,28 @@ /* utf8.h * - * Copyright (c) 1998-2000, Larry Wall + * Copyright (c) 1998-2001, Larry Wall * * 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 + * data (such as Latin-1) in string literals. */ +#ifdef USE_UTF8_SCRIPTS +# define USE_UTF8_IN_NAMES (!IN_BYTES) +#else +# define USE_UTF8_IN_NAMES (PL_hints & HINT_UTF8) +#endif + +#ifdef EBCDIC +/* The equivalent of these macros but implementing UTF-EBCDIC + are in the following header file: + */ + +#include "utfebcdic.h" +#else START_EXTERN_C #ifdef DOINIT @@ -26,45 +42,59 @@ EXTCONST unsigned char PL_utf8skip[]; #endif END_EXTERN_C +#define UTF8SKIP(s) PL_utf8skip[*(U8*)s] -#define UTF8_MAXLEN 13 /* how wide can a single UTF8 encoded character become */ +/* 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 UTF_TO_NATIVE(ch) (ch) +/* Transforms in wide UV chars */ +#define UNI_TO_NATIVE(ch) (ch) +#define NATIVE_TO_UNI(ch) (ch) +/* Transforms in invariant space */ +#define NATIVE_TO_NEED(enc,ch) (ch) +#define ASCII_TO_NEED(enc,ch) (ch) -/* #define IN_UTF8 (PL_curcop->op_private & HINT_UTF8) */ -#define IN_BYTE (PL_curcop->op_private & HINT_BYTE) -#define DO_UTF8(sv) (SvUTF8(sv) && !IN_BYTE) - -#define UTF8_ALLOW_CONTINUATION 0x0001 -#define UTF8_ALLOW_NON_CONTINUATION 0x0002 -#define UTF8_ALLOW_FE_FF 0x0004 -#define UTF8_ALLOW_SHORT 0x0008 -#define UTF8_ALLOW_SURROGATE 0x0010 -#define UTF8_ALLOW_BOM 0x0020 -#define UTF8_ALLOW_FFFF 0x0040 -#define UTF8_ALLOW_LONG 0x0080 -#define UTF8_ALLOW_ANYUV (UTF8_ALLOW_FE_FF|UTF8_ALLOW_FFFF \ - |UTF8_ALLOW_BOM|UTF8_ALLOW_SURROGATE) -#define UTF8_ALLOW_ANY 0x00ff -#define UTF8_CHECK_ONLY 0x0100 +/* 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 -#define UNICODE_SURROGATE_FIRST 0xd800 -#define UNICODE_SURROGATE_LAST 0xdfff -#define UNICODE_REPLACEMENT 0xfffd -#define UNICODE_BYTER_ORDER_MARK 0xfffe -#define UNICODE_ILLEGAL 0xffff +/* -#define UNICODE_IS_SURROGATE(c) ((c) >= UNICODE_SURROGATE_FIRST && \ - (c) <= UNICODE_SURROGATE_LAST) -#define UNICODE_IS_REPLACEMENT(c) ((c) == UNICODE_REPLACMENT) -#define UNICODE_IS_BYTE_ORDER_MARK(c) ((c) == UNICODE_BYTER_ORDER_MARK) -#define UNICODE_IS_ILLEGAL(c) ((c) == UNICODE_ILLEGAL) + The following table is from Unicode 3.1. -#define UTF8SKIP(s) PL_utf8skip[*(U8*)s] + Code Points 1st Byte 2nd Byte 3rd Byte 4th Byte -#define UTF8_QUAD_MAX UINT64_C(0x1000000000) + U+0000..U+007F 00..7F    + U+0080..U+07FF C2..DF 80..BF    + U+0800..U+0FFF E0 A0..BF 80..BF   + U+1000..U+FFFF E1..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 -#define UTF8_IS_ASCII(c) ((c) < 0x80) -#define UTF8_IS_START(c) ((c) >= 0xc0 && ((c) <= 0xfd)) -#define UTF8_IS_CONTINUATION(c) ((c) >= 0x80 && ((c) <= 0xbf)) + */ + +#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)) +#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_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 : \ @@ -73,7 +103,7 @@ END_EXTERN_C (uv) < 0x200000 ? 4 : \ (uv) < 0x4000000 ? 5 : \ (uv) < 0x80000000 ? 6 : \ - (uv) < UTF8_QUAD_MAX ? 7 : 13 ) + (uv) < UTF8_QUAD_MAX ? 7 : 13 ) #else /* No, I'm not even going to *TRY* putting #ifdef inside a #define */ #define UNISKIP(uv) ( (uv) < 0x80 ? 1 : \ @@ -84,23 +114,61 @@ END_EXTERN_C (uv) < 0x80000000 ? 6 : 7 ) #endif - /* * 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. */ -#ifdef EBCDIC -#define isIDFIRST_lazy_if(p,c) isIDFIRST(*(p)) -#define isALNUM_lazy_if(p,c) isALNUM(*(p)) -#else -#define isIDFIRST_lazy_if(p,c) ((IN_BYTE || (!c || (*((U8*)p) < 0xc0))) \ +#define isIDFIRST_lazy_if(p,c) ((IN_BYTES || (!c || (*((U8*)p) < 0xc0))) \ ? isIDFIRST(*(p)) \ : isIDFIRST_utf8((U8*)p)) -#define isALNUM_lazy_if(p,c) ((IN_BYTE || (!c || (*((U8*)p) < 0xc0))) \ +#define isALNUM_lazy_if(p,c) ((IN_BYTES || (!c || (*((U8*)p) < 0xc0))) \ ? isALNUM(*(p)) \ : isALNUM_utf8((U8*)p)) -#endif + + +#endif /* EBCDIC vs ASCII */ + +/* Rest of these are attributes of Unicode and perl's internals rather than the encoding */ + #define isIDFIRST_lazy(p) isIDFIRST_lazy_if(p,1) #define isALNUM_lazy(p) isALNUM_lazy_if(p,1) + +#define UTF8_MAXLEN 13 /* how wide can a single UTF8 encoded character become */ + +#define IN_BYTES (PL_curcop->op_private & HINT_BYTES) +#define DO_UTF8(sv) (SvUTF8(sv) && !IN_BYTES) + +#define UTF8_ALLOW_EMPTY 0x0001 +#define UTF8_ALLOW_CONTINUATION 0x0002 +#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_BOM 0x0040 +#define UTF8_ALLOW_FFFF 0x0080 +#define UTF8_ALLOW_LONG 0x0100 +#define UTF8_ALLOW_ANYUV (UTF8_ALLOW_EMPTY|UTF8_ALLOW_FE_FF|\ + UTF8_ALLOW_SURROGATE|UTF8_ALLOW_BOM|\ + UTF8_ALLOW_FFFF|UTF8_ALLOW_LONG) +#define UTF8_ALLOW_ANY 0x00ff +#define UTF8_CHECK_ONLY 0x0200 + +#define UNICODE_SURROGATE_FIRST 0xd800 +#define UNICODE_SURROGATE_LAST 0xdfff +#define UNICODE_REPLACEMENT 0xfffd +#define UNICODE_BYTER_ORDER_MARK 0xfffe +#define UNICODE_ILLEGAL 0xffff + +#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_BYTER_ORDER_MARK) +#define UNICODE_IS_ILLEGAL(c) ((c) == UNICODE_ILLEGAL) + +#ifdef HAS_QUAD +# define UTF8_QUAD_MAX UINT64_C(0x1000000000) +#endif + +#define UTF8_IS_ASCII(c) UTF8_IS_INVARIANT(c)