52 lines
1.9 KiB
C
52 lines
1.9 KiB
C
/* utf8.h
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*
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* Copyright (c) 1998-2000, Larry Wall
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*
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* You may distribute under the terms of either the GNU General Public
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* License or the Artistic License, as specified in the README file.
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*
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*/
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START_EXTERN_C
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#ifdef DOINIT
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EXTCONST unsigned char PL_utf8skip[] = {
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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 */
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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 */
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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 */
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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 */
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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 */
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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 */
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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 */
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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. */
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7,13, /* Perl extended (not UTF-8). Up to 72bit allowed (64-bit + reserved). */
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};
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#else
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EXTCONST unsigned char PL_utf8skip[];
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#endif
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END_EXTERN_C
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#define UTF8_MAXLEN 13 /* how wide can a single UTF8 encoded character become */
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/*#define IN_UTF8 (PL_curcop->op_private & HINT_UTF8)*/
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#define IN_BYTE (PL_curcop->op_private & HINT_BYTE)
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#define DO_UTF8(sv) (SvUTF8(sv) && !IN_BYTE)
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#define UTF8SKIP(s) PL_utf8skip[*(U8*)s]
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/*
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* Note: we try to be careful never to call the isXXX_utf8() functions
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* unless we're pretty sure we've seen the beginning of a UTF-8 character
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* (that is, the two high bits are set). Otherwise we risk loading in the
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* heavy-duty SWASHINIT and SWASHGET routines unnecessarily.
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*/
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#define isIDFIRST_lazy_if(p,c) ((!c || (*((U8*)p) < 0xc0)) \
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? isIDFIRST(*(p)) \
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: isIDFIRST_utf8((U8*)p))
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#define isALNUM_lazy_if(p,c) ((!c || (*((U8*)p) < 0xc0)) \
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? isALNUM(*(p)) \
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: isALNUM_utf8((U8*)p))
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#define isIDFIRST_lazy(p) isIDFIRST_lazy_if(p,1)
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#define isALNUM_lazy(p) isALNUM_lazy_if(p,1)
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