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- /* utf8.h
- *
- * 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.
- *
- */
-
- START_EXTERN_C
-
- #ifdef DOINIT
- EXTCONST unsigned char PL_utf8skip[] = {
- 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* ascii */
- 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* ascii */
- 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* ascii */
- 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* ascii */
- 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* bogus */
- 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* bogus */
- 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, /* scripts */
- 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,6,6, /* cjk etc. */
- 7,13, /* Perl extended (not UTF-8). Up to 72bit allowed (64-bit + reserved). */
- };
- #else
- EXTCONST unsigned char PL_utf8skip[];
- #endif
-
- 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_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..7Fááá
- U+0080..U+07FF C2..DF 80..BFááá
- U+0800..U+0FFF E0 A0..BF 80..BFáá
- U+1000..U+FFFF E1..EF 80..BF 80..BFáá
- 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.
- */
- #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) ((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)
-