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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 UTF8_ALLOW_CONTINUATION 0x0001 |
37 | #define UTF8_ALLOW_NON_CONTINUATION 0x0002 |
38 | #define UTF8_ALLOW_FE_FF 0x0004 |
39 | #define UTF8_ALLOW_SHORT 0x0008 |
40 | #define UTF8_ALLOW_SURROGATE 0x0010 |
41 | #define UTF8_ALLOW_BOM 0x0020 |
42 | #define UTF8_ALLOW_FFFF 0x0040 |
43 | #define UTF8_ALLOW_LONG 0x0080 |
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44 | #define UTF8_ALLOW_ANYUV (UTF8_ALLOW_FE_FF|UTF8_ALLOW_FFFF \ |
45 | |UTF8_ALLOW_BOM|UTF8_ALLOW_SURROGATE) |
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46 | #define UTF8_ALLOW_ANY 0x00ff |
47 | #define UTF8_CHECK_ONLY 0x0100 |
48 | |
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49 | #define UTF8SKIP(s) PL_utf8skip[*(U8*)s] |
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50 | |
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51 | #define UTF8_QUAD_MAX UINT64_C(0x1000000000) |
52 | |
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53 | #ifdef HAS_QUAD |
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54 | #define UNISKIP(uv) ( (uv) < 0x80 ? 1 : \ |
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55 | (uv) < 0x800 ? 2 : \ |
56 | (uv) < 0x10000 ? 3 : \ |
57 | (uv) < 0x200000 ? 4 : \ |
58 | (uv) < 0x4000000 ? 5 : \ |
59 | (uv) < 0x80000000 ? 6 : \ |
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60 | (uv) < UTF8_QUAD_MAX ? 7 : 13 ) |
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61 | #else |
62 | /* No, I'm not even going to *TRY* putting #ifdef inside a #define */ |
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63 | #define UNISKIP(uv) ( (uv) < 0x80 ? 1 : \ |
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64 | (uv) < 0x800 ? 2 : \ |
65 | (uv) < 0x10000 ? 3 : \ |
66 | (uv) < 0x200000 ? 4 : \ |
67 | (uv) < 0x4000000 ? 5 : \ |
68 | (uv) < 0x80000000 ? 6 : 7 ) |
69 | #endif |
70 | |
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71 | #define UNICODE_REPLACEMENT_CHARACTER 0xfffd |
72 | |
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73 | /* |
74 | * Note: we try to be careful never to call the isXXX_utf8() functions |
75 | * unless we're pretty sure we've seen the beginning of a UTF-8 character |
76 | * (that is, the two high bits are set). Otherwise we risk loading in the |
77 | * heavy-duty SWASHINIT and SWASHGET routines unnecessarily. |
78 | */ |
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79 | #ifdef EBCDIC |
80 | #define isIDFIRST_lazy_if(p,c) isIDFIRST(*(p)) |
81 | #define isALNUM_lazy_if(p,c) isALNUM(*(p)) |
82 | #else |
83 | #define isIDFIRST_lazy_if(p,c) ((IN_BYTE || (!c || (*((U8*)p) < 0xc0))) \ |
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84 | ? isIDFIRST(*(p)) \ |
85 | : isIDFIRST_utf8((U8*)p)) |
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86 | #define isALNUM_lazy_if(p,c) ((IN_BYTE || (!c || (*((U8*)p) < 0xc0))) \ |
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87 | ? isALNUM(*(p)) \ |
88 | : isALNUM_utf8((U8*)p)) |
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89 | #endif |
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90 | #define isIDFIRST_lazy(p) isIDFIRST_lazy_if(p,1) |
91 | #define isALNUM_lazy(p) isALNUM_lazy_if(p,1) |