diff options
Diffstat (limited to 'contrib/perl5/utf8.h')
| -rw-r--r-- | contrib/perl5/utf8.h | 90 |
1 files changed, 86 insertions, 4 deletions
diff --git a/contrib/perl5/utf8.h b/contrib/perl5/utf8.h index c37a995..d022e86 100644 --- a/contrib/perl5/utf8.h +++ b/contrib/perl5/utf8.h @@ -1,6 +1,6 @@ /* 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. @@ -29,23 +29,105 @@ END_EXTERN_C #define UTF8_MAXLEN 13 /* how wide can a single UTF8 encoded character become */ -/*#define IN_UTF8 (PL_curcop->op_private & HINT_UTF8)*/ +/* #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_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 0x0100 + +#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) + #define UTF8SKIP(s) PL_utf8skip[*(U8*)s] +#define UTF8_QUAD_MAX UINT64_C(0x1000000000) + +/* + + The following table is from Unicode 3.1. + + 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+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) (((U8)c) < 0x80) +#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 UTF8_CONTINUATION_MASK ((U8)0x3f) +#define UTF8_ACCUMULATION_SHIFT 6 +#define UTF8_ACCUMULATE(old, new) (((old) << UTF8_ACCUMULATION_SHIFT) | (((U8)new) & UTF8_CONTINUATION_MASK)) + +#define UTF8_EIGHT_BIT_HI(c) ( (((U8)(c))>>6) |0xc0) +#define UTF8_EIGHT_BIT_LO(c) (((((U8)(c)) )&0x3f)|0x80) + +#ifdef HAS_QUAD +#define UNISKIP(uv) ( (uv) < 0x80 ? 1 : \ + (uv) < 0x800 ? 2 : \ + (uv) < 0x10000 ? 3 : \ + (uv) < 0x200000 ? 4 : \ + (uv) < 0x4000000 ? 5 : \ + (uv) < 0x80000000 ? 6 : \ + (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 : \ + (uv) < 0x800 ? 2 : \ + (uv) < 0x10000 ? 3 : \ + (uv) < 0x200000 ? 4 : \ + (uv) < 0x4000000 ? 5 : \ + (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. */ -#define isIDFIRST_lazy_if(p,c) ((!c || (*((U8*)p) < 0xc0)) \ +#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))) \ ? isIDFIRST(*(p)) \ : isIDFIRST_utf8((U8*)p)) -#define isALNUM_lazy_if(p,c) ((!c || (*((U8*)p) < 0xc0)) \ +#define isALNUM_lazy_if(p,c) ((IN_BYTE || (!c || (*((U8*)p) < 0xc0))) \ ? isALNUM(*(p)) \ : isALNUM_utf8((U8*)p)) +#endif #define isIDFIRST_lazy(p) isIDFIRST_lazy_if(p,1) #define isALNUM_lazy(p) isALNUM_lazy_if(p,1) |
