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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 | #define UNICODE_REPLACEMENT_CHARACTER 0xfffd |
57 | |
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58 | /* |
59 | * Note: we try to be careful never to call the isXXX_utf8() functions |
60 | * unless we're pretty sure we've seen the beginning of a UTF-8 character |
61 | * (that is, the two high bits are set). Otherwise we risk loading in the |
62 | * heavy-duty SWASHINIT and SWASHGET routines unnecessarily. |
63 | */ |
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64 | #ifdef EBCDIC |
65 | #define isIDFIRST_lazy_if(p,c) isIDFIRST(*(p)) |
66 | #define isALNUM_lazy_if(p,c) isALNUM(*(p)) |
67 | #else |
68 | #define isIDFIRST_lazy_if(p,c) ((IN_BYTE || (!c || (*((U8*)p) < 0xc0))) \ |
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69 | ? isIDFIRST(*(p)) \ |
70 | : isIDFIRST_utf8((U8*)p)) |
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71 | #define isALNUM_lazy_if(p,c) ((IN_BYTE || (!c || (*((U8*)p) < 0xc0))) \ |
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72 | ? isALNUM(*(p)) \ |
73 | : isALNUM_utf8((U8*)p)) |
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74 | #endif |
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75 | #define isIDFIRST_lazy(p) isIDFIRST_lazy_if(p,1) |
76 | #define isALNUM_lazy(p) isALNUM_lazy_if(p,1) |