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1 | /* utf8.h |
| 2 | * |
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3 | * Copyright (c) 1998-2000, Larry Wall |
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4 | * |
| 5 | * You may distribute under the terms of either the GNU General Public |
| 6 | * License or the Artistic License, as specified in the README file. |
| 7 | * |
| 8 | */ |
| 9 | |
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10 | START_EXTERN_C |
| 11 | |
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12 | #ifdef DOINIT |
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13 | EXTCONST unsigned char PL_utf8skip[] = { |
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14 | 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 */ |
| 15 | 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 */ |
| 16 | 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 */ |
| 17 | 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 */ |
| 18 | 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 */ |
| 19 | 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 */ |
| 20 | 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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21 | 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. */ |
| 22 | 7,13, /* Perl extended (not UTF-8). Up to 72bit allowed (64-bit + reserved). */ |
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23 | }; |
| 24 | #else |
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25 | EXTCONST unsigned char PL_utf8skip[]; |
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26 | #endif |
| 27 | |
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28 | END_EXTERN_C |
| 29 | |
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30 | #define UTF8_MAXLEN 13 /* how wide can a single UTF8 encoded character become */ |
| 31 | |
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32 | /*#define IN_UTF8 (PL_curcop->op_private & HINT_UTF8)*/ |
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33 | #define IN_BYTE (PL_curcop->op_private & HINT_BYTE) |
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34 | #define DO_UTF8(sv) (SvUTF8(sv) && !IN_BYTE) |
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35 | |
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36 | #define UTF8SKIP(s) PL_utf8skip[*(U8*)s] |
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37 | |
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38 | #ifdef HAS_QUAD |
| 39 | #define UTF8LEN(uv) ( (uv) < 0x80 ? 1 : \ |
| 40 | (uv) < 0x800 ? 2 : \ |
| 41 | (uv) < 0x10000 ? 3 : \ |
| 42 | (uv) < 0x200000 ? 4 : \ |
| 43 | (uv) < 0x4000000 ? 5 : \ |
| 44 | (uv) < 0x80000000 ? 6 : \ |
| 45 | (uv) < 0x1000000000LL ? 7 : 13 ) |
| 46 | #else |
| 47 | /* No, I'm not even going to *TRY* putting #ifdef inside a #define */ |
| 48 | #define UTF8LEN(uv) ( (uv) < 0x80 ? 1 : \ |
| 49 | (uv) < 0x800 ? 2 : \ |
| 50 | (uv) < 0x10000 ? 3 : \ |
| 51 | (uv) < 0x200000 ? 4 : \ |
| 52 | (uv) < 0x4000000 ? 5 : \ |
| 53 | (uv) < 0x80000000 ? 6 : 7 ) |
| 54 | #endif |
| 55 | |
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56 | /* |
| 57 | * Note: we try to be careful never to call the isXXX_utf8() functions |
| 58 | * unless we're pretty sure we've seen the beginning of a UTF-8 character |
| 59 | * (that is, the two high bits are set). Otherwise we risk loading in the |
| 60 | * heavy-duty SWASHINIT and SWASHGET routines unnecessarily. |
| 61 | */ |
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62 | #ifdef EBCDIC |
| 63 | #define isIDFIRST_lazy_if(p,c) isIDFIRST(*(p)) |
| 64 | #define isALNUM_lazy_if(p,c) isALNUM(*(p)) |
| 65 | #else |
| 66 | #define isIDFIRST_lazy_if(p,c) ((IN_BYTE || (!c || (*((U8*)p) < 0xc0))) \ |
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67 | ? isIDFIRST(*(p)) \ |
| 68 | : isIDFIRST_utf8((U8*)p)) |
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69 | #define isALNUM_lazy_if(p,c) ((IN_BYTE || (!c || (*((U8*)p) < 0xc0))) \ |
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70 | ? isALNUM(*(p)) \ |
| 71 | : isALNUM_utf8((U8*)p)) |
| 22d4bb9c |
72 | #endif |
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73 | #define isIDFIRST_lazy(p) isIDFIRST_lazy_if(p,1) |
| 74 | #define isALNUM_lazy(p) isALNUM_lazy_if(p,1) |
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