[14544] | 1 | /* utf8.c |
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| 2 | * |
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| 3 | * Copyright (c) 1998-2000, Larry Wall |
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| 4 | * |
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| 5 | * You may distribute under the terms of either the GNU General Public |
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| 6 | * License or the Artistic License, as specified in the README file. |
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| 7 | * |
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| 8 | */ |
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| 9 | |
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| 10 | /* |
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| 11 | * 'What a fix!' said Sam. 'That's the one place in all the lands we've ever |
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| 12 | * heard of that we don't want to see any closer; and that's the one place |
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| 13 | * we're trying to get to! And that's just where we can't get, nohow.' |
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| 14 | * |
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| 15 | * 'Well do I understand your speech,' he answered in the same language; |
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| 16 | * 'yet few strangers do so. Why then do you not speak in the Common Tongue, |
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| 17 | * as is the custom in the West, if you wish to be answered?' |
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| 18 | * |
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| 19 | * ...the travellers perceived that the floor was paved with stones of many |
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| 20 | * hues; branching runes and strange devices intertwined beneath their feet. |
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| 21 | */ |
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| 22 | |
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| 23 | #include "EXTERN.h" |
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| 24 | #define PERL_IN_UTF8_C |
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| 25 | #include "perl.h" |
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| 26 | |
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| 27 | /* Unicode support */ |
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| 28 | |
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| 29 | U8 * |
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| 30 | Perl_uv_to_utf8(pTHX_ U8 *d, UV uv) |
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| 31 | { |
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| 32 | if (uv < 0x80) { |
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| 33 | *d++ = uv; |
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| 34 | return d; |
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| 35 | } |
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| 36 | if (uv < 0x800) { |
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| 37 | *d++ = (( uv >> 6) | 0xc0); |
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| 38 | *d++ = (( uv & 0x3f) | 0x80); |
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| 39 | return d; |
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| 40 | } |
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| 41 | if (uv < 0x10000) { |
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| 42 | *d++ = (( uv >> 12) | 0xe0); |
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| 43 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
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| 44 | *d++ = (( uv & 0x3f) | 0x80); |
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| 45 | return d; |
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| 46 | } |
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| 47 | if (uv < 0x200000) { |
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| 48 | *d++ = (( uv >> 18) | 0xf0); |
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| 49 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
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| 50 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
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| 51 | *d++ = (( uv & 0x3f) | 0x80); |
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| 52 | return d; |
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| 53 | } |
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| 54 | if (uv < 0x4000000) { |
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| 55 | *d++ = (( uv >> 24) | 0xf8); |
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| 56 | *d++ = (((uv >> 18) & 0x3f) | 0x80); |
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| 57 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
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| 58 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
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| 59 | *d++ = (( uv & 0x3f) | 0x80); |
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| 60 | return d; |
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| 61 | } |
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| 62 | if (uv < 0x80000000) { |
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| 63 | *d++ = (( uv >> 30) | 0xfc); |
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| 64 | *d++ = (((uv >> 24) & 0x3f) | 0x80); |
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| 65 | *d++ = (((uv >> 18) & 0x3f) | 0x80); |
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| 66 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
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| 67 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
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| 68 | *d++ = (( uv & 0x3f) | 0x80); |
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| 69 | return d; |
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| 70 | } |
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| 71 | #ifdef HAS_QUAD |
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| 72 | if (uv < 0x1000000000LL) |
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| 73 | #endif |
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| 74 | { |
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| 75 | *d++ = 0xfe; /* Can't match U+FEFF! */ |
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| 76 | *d++ = (((uv >> 30) & 0x3f) | 0x80); |
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| 77 | *d++ = (((uv >> 24) & 0x3f) | 0x80); |
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| 78 | *d++ = (((uv >> 18) & 0x3f) | 0x80); |
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| 79 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
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| 80 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
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| 81 | *d++ = (( uv & 0x3f) | 0x80); |
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| 82 | return d; |
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| 83 | } |
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| 84 | #ifdef HAS_QUAD |
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| 85 | { |
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| 86 | *d++ = 0xff; /* Can't match U+FFFE! */ |
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| 87 | *d++ = 0x80; /* 6 Reserved bits */ |
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| 88 | *d++ = (((uv >> 60) & 0x0f) | 0x80); /* 2 Reserved bits */ |
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| 89 | *d++ = (((uv >> 54) & 0x3f) | 0x80); |
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| 90 | *d++ = (((uv >> 48) & 0x3f) | 0x80); |
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| 91 | *d++ = (((uv >> 42) & 0x3f) | 0x80); |
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| 92 | *d++ = (((uv >> 36) & 0x3f) | 0x80); |
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| 93 | *d++ = (((uv >> 30) & 0x3f) | 0x80); |
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| 94 | *d++ = (((uv >> 24) & 0x3f) | 0x80); |
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| 95 | *d++ = (((uv >> 18) & 0x3f) | 0x80); |
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| 96 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
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| 97 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
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| 98 | *d++ = (( uv & 0x3f) | 0x80); |
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| 99 | return d; |
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| 100 | } |
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| 101 | #endif |
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| 102 | } |
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| 103 | |
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| 104 | /* Tests if some arbitrary number of bytes begins in a valid UTF-8 character. |
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| 105 | * The actual number of bytes in the UTF-8 character will be returned if it |
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| 106 | * is valid, otherwise 0. */ |
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| 107 | int |
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| 108 | Perl_is_utf8_char(pTHX_ U8 *s) |
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| 109 | { |
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| 110 | U8 u = *s; |
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| 111 | int slen, len; |
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| 112 | |
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| 113 | if (!(u & 0x80)) |
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| 114 | return 1; |
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| 115 | |
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| 116 | if (!(u & 0x40)) |
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| 117 | return 0; |
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| 118 | |
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| 119 | if (!(u & 0x20)) { len = 2; } |
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| 120 | else if (!(u & 0x10)) { len = 3; } |
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| 121 | else if (!(u & 0x08)) { len = 4; } |
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| 122 | else if (!(u & 0x04)) { len = 5; } |
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| 123 | else if (!(u & 0x02)) { len = 6; } |
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| 124 | else if (!(u & 0x01)) { len = 7; } |
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| 125 | else { len = 13; } /* whoa! */ |
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| 126 | |
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| 127 | slen = len - 1; |
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| 128 | s++; |
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| 129 | while (slen--) { |
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| 130 | if ((*s & 0xc0) != 0x80) |
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| 131 | return 0; |
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| 132 | s++; |
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| 133 | } |
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| 134 | return len; |
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| 135 | } |
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| 136 | |
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| 137 | UV |
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| 138 | Perl_utf8_to_uv(pTHX_ U8* s, I32* retlen) |
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| 139 | { |
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| 140 | UV uv = *s; |
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| 141 | int len; |
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| 142 | if (!(uv & 0x80)) { |
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| 143 | if (retlen) |
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| 144 | *retlen = 1; |
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| 145 | return *s; |
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| 146 | } |
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| 147 | if (!(uv & 0x40)) { |
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| 148 | dTHR; |
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| 149 | if (ckWARN_d(WARN_UTF8)) |
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| 150 | Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character"); |
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| 151 | if (retlen) |
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| 152 | *retlen = 1; |
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| 153 | return *s; |
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| 154 | } |
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| 155 | |
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| 156 | if (!(uv & 0x20)) { len = 2; uv &= 0x1f; } |
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| 157 | else if (!(uv & 0x10)) { len = 3; uv &= 0x0f; } |
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| 158 | else if (!(uv & 0x08)) { len = 4; uv &= 0x07; } |
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| 159 | else if (!(uv & 0x04)) { len = 5; uv &= 0x03; } |
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| 160 | else if (!(uv & 0x02)) { len = 6; uv &= 0x01; } |
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| 161 | else if (!(uv & 0x01)) { len = 7; uv = 0; } |
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| 162 | else { len = 13; uv = 0; } /* whoa! */ |
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| 163 | |
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| 164 | if (retlen) |
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| 165 | *retlen = len; |
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| 166 | --len; |
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| 167 | s++; |
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| 168 | while (len--) { |
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| 169 | if ((*s & 0xc0) != 0x80) { |
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| 170 | dTHR; |
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| 171 | if (ckWARN_d(WARN_UTF8)) |
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| 172 | Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character"); |
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| 173 | if (retlen) |
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| 174 | *retlen -= len + 1; |
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| 175 | return 0xfffd; |
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| 176 | } |
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| 177 | else |
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| 178 | uv = (uv << 6) | (*s++ & 0x3f); |
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| 179 | } |
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| 180 | return uv; |
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| 181 | } |
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| 182 | |
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| 183 | /* utf8_distance(a,b) is intended to be a - b in pointer arithmetic */ |
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| 184 | |
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| 185 | I32 |
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| 186 | Perl_utf8_distance(pTHX_ U8 *a, U8 *b) |
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| 187 | { |
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| 188 | I32 off = 0; |
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| 189 | if (a < b) { |
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| 190 | while (a < b) { |
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| 191 | a += UTF8SKIP(a); |
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| 192 | off--; |
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| 193 | } |
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| 194 | } |
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| 195 | else { |
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| 196 | while (b < a) { |
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| 197 | b += UTF8SKIP(b); |
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| 198 | off++; |
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| 199 | } |
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| 200 | } |
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| 201 | return off; |
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| 202 | } |
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| 203 | |
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| 204 | /* WARNING: do not use the following unless you *know* off is within bounds */ |
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| 205 | |
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| 206 | U8 * |
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| 207 | Perl_utf8_hop(pTHX_ U8 *s, I32 off) |
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| 208 | { |
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| 209 | if (off >= 0) { |
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| 210 | while (off--) |
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| 211 | s += UTF8SKIP(s); |
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| 212 | } |
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| 213 | else { |
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| 214 | while (off++) { |
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| 215 | s--; |
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| 216 | if (*s & 0x80) { |
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| 217 | while ((*s & 0xc0) == 0x80) |
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| 218 | s--; |
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| 219 | } |
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| 220 | } |
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| 221 | } |
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| 222 | return s; |
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| 223 | } |
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| 224 | |
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| 225 | /* XXX NOTHING CALLS THE FOLLOWING TWO ROUTINES YET!!! */ |
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| 226 | /* |
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| 227 | * Convert native or reversed UTF-16 to UTF-8. |
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| 228 | * |
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| 229 | * Destination must be pre-extended to 3/2 source. Do not use in-place. |
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| 230 | * We optimize for native, for obvious reasons. */ |
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| 231 | |
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| 232 | U8* |
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| 233 | Perl_utf16_to_utf8(pTHX_ U16* p, U8* d, I32 bytelen) |
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| 234 | { |
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| 235 | U16* pend = p + bytelen / 2; |
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| 236 | while (p < pend) { |
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| 237 | UV uv = *p++; |
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| 238 | if (uv < 0x80) { |
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| 239 | *d++ = uv; |
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| 240 | continue; |
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| 241 | } |
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| 242 | if (uv < 0x800) { |
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| 243 | *d++ = (( uv >> 6) | 0xc0); |
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| 244 | *d++ = (( uv & 0x3f) | 0x80); |
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| 245 | continue; |
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| 246 | } |
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| 247 | if (uv >= 0xd800 && uv < 0xdbff) { /* surrogates */ |
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| 248 | dTHR; |
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| 249 | int low = *p++; |
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| 250 | if (low < 0xdc00 || low >= 0xdfff) { |
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| 251 | if (ckWARN_d(WARN_UTF8)) |
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| 252 | Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-16 surrogate"); |
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| 253 | p--; |
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| 254 | uv = 0xfffd; |
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| 255 | } |
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| 256 | uv = ((uv - 0xd800) << 10) + (low - 0xdc00) + 0x10000; |
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| 257 | } |
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| 258 | if (uv < 0x10000) { |
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| 259 | *d++ = (( uv >> 12) | 0xe0); |
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| 260 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
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| 261 | *d++ = (( uv & 0x3f) | 0x80); |
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| 262 | continue; |
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| 263 | } |
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| 264 | else { |
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| 265 | *d++ = (( uv >> 18) | 0xf0); |
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| 266 | *d++ = (((uv >> 12) & 0x3f) | 0x80); |
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| 267 | *d++ = (((uv >> 6) & 0x3f) | 0x80); |
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| 268 | *d++ = (( uv & 0x3f) | 0x80); |
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| 269 | continue; |
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| 270 | } |
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| 271 | } |
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| 272 | return d; |
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| 273 | } |
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| 274 | |
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| 275 | /* Note: this one is slightly destructive of the source. */ |
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| 276 | |
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| 277 | U8* |
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| 278 | Perl_utf16_to_utf8_reversed(pTHX_ U16* p, U8* d, I32 bytelen) |
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| 279 | { |
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| 280 | U8* s = (U8*)p; |
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| 281 | U8* send = s + bytelen; |
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| 282 | while (s < send) { |
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| 283 | U8 tmp = s[0]; |
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| 284 | s[0] = s[1]; |
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| 285 | s[1] = tmp; |
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| 286 | s += 2; |
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| 287 | } |
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| 288 | return utf16_to_utf8(p, d, bytelen); |
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| 289 | } |
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| 290 | |
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| 291 | /* for now these are all defined (inefficiently) in terms of the utf8 versions */ |
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| 292 | |
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| 293 | bool |
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| 294 | Perl_is_uni_alnum(pTHX_ U32 c) |
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| 295 | { |
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| 296 | U8 tmpbuf[UTF8_MAXLEN]; |
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| 297 | uv_to_utf8(tmpbuf, (UV)c); |
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| 298 | return is_utf8_alnum(tmpbuf); |
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| 299 | } |
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| 300 | |
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| 301 | bool |
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| 302 | Perl_is_uni_alnumc(pTHX_ U32 c) |
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| 303 | { |
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| 304 | U8 tmpbuf[UTF8_MAXLEN]; |
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| 305 | uv_to_utf8(tmpbuf, (UV)c); |
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| 306 | return is_utf8_alnumc(tmpbuf); |
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| 307 | } |
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| 308 | |
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| 309 | bool |
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| 310 | Perl_is_uni_idfirst(pTHX_ U32 c) |
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| 311 | { |
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| 312 | U8 tmpbuf[UTF8_MAXLEN]; |
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| 313 | uv_to_utf8(tmpbuf, (UV)c); |
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| 314 | return is_utf8_idfirst(tmpbuf); |
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| 315 | } |
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| 316 | |
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| 317 | bool |
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| 318 | Perl_is_uni_alpha(pTHX_ U32 c) |
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| 319 | { |
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| 320 | U8 tmpbuf[UTF8_MAXLEN]; |
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| 321 | uv_to_utf8(tmpbuf, (UV)c); |
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| 322 | return is_utf8_alpha(tmpbuf); |
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| 323 | } |
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| 324 | |
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| 325 | bool |
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| 326 | Perl_is_uni_ascii(pTHX_ U32 c) |
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| 327 | { |
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| 328 | U8 tmpbuf[UTF8_MAXLEN]; |
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| 329 | uv_to_utf8(tmpbuf, (UV)c); |
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| 330 | return is_utf8_ascii(tmpbuf); |
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| 331 | } |
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| 332 | |
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| 333 | bool |
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| 334 | Perl_is_uni_space(pTHX_ U32 c) |
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| 335 | { |
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| 336 | U8 tmpbuf[UTF8_MAXLEN]; |
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| 337 | uv_to_utf8(tmpbuf, (UV)c); |
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| 338 | return is_utf8_space(tmpbuf); |
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| 339 | } |
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| 340 | |
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| 341 | bool |
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| 342 | Perl_is_uni_digit(pTHX_ U32 c) |
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| 343 | { |
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| 344 | U8 tmpbuf[UTF8_MAXLEN]; |
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| 345 | uv_to_utf8(tmpbuf, (UV)c); |
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| 346 | return is_utf8_digit(tmpbuf); |
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| 347 | } |
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| 348 | |
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| 349 | bool |
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| 350 | Perl_is_uni_upper(pTHX_ U32 c) |
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| 351 | { |
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| 352 | U8 tmpbuf[UTF8_MAXLEN]; |
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| 353 | uv_to_utf8(tmpbuf, (UV)c); |
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| 354 | return is_utf8_upper(tmpbuf); |
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| 355 | } |
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| 356 | |
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| 357 | bool |
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| 358 | Perl_is_uni_lower(pTHX_ U32 c) |
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| 359 | { |
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| 360 | U8 tmpbuf[UTF8_MAXLEN]; |
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| 361 | uv_to_utf8(tmpbuf, (UV)c); |
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| 362 | return is_utf8_lower(tmpbuf); |
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| 363 | } |
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| 364 | |
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| 365 | bool |
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| 366 | Perl_is_uni_cntrl(pTHX_ U32 c) |
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| 367 | { |
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| 368 | U8 tmpbuf[UTF8_MAXLEN]; |
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| 369 | uv_to_utf8(tmpbuf, (UV)c); |
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| 370 | return is_utf8_cntrl(tmpbuf); |
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| 371 | } |
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| 372 | |
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| 373 | bool |
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| 374 | Perl_is_uni_graph(pTHX_ U32 c) |
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| 375 | { |
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| 376 | U8 tmpbuf[UTF8_MAXLEN]; |
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| 377 | uv_to_utf8(tmpbuf, (UV)c); |
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| 378 | return is_utf8_graph(tmpbuf); |
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| 379 | } |
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| 380 | |
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| 381 | bool |
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| 382 | Perl_is_uni_print(pTHX_ U32 c) |
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| 383 | { |
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| 384 | U8 tmpbuf[UTF8_MAXLEN]; |
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| 385 | uv_to_utf8(tmpbuf, (UV)c); |
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| 386 | return is_utf8_print(tmpbuf); |
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| 387 | } |
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| 388 | |
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| 389 | bool |
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| 390 | Perl_is_uni_punct(pTHX_ U32 c) |
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| 391 | { |
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| 392 | U8 tmpbuf[UTF8_MAXLEN]; |
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| 393 | uv_to_utf8(tmpbuf, (UV)c); |
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| 394 | return is_utf8_punct(tmpbuf); |
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| 395 | } |
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| 396 | |
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| 397 | bool |
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| 398 | Perl_is_uni_xdigit(pTHX_ U32 c) |
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| 399 | { |
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| 400 | U8 tmpbuf[UTF8_MAXLEN]; |
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| 401 | uv_to_utf8(tmpbuf, (UV)c); |
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| 402 | return is_utf8_xdigit(tmpbuf); |
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| 403 | } |
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| 404 | |
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| 405 | U32 |
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| 406 | Perl_to_uni_upper(pTHX_ U32 c) |
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| 407 | { |
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| 408 | U8 tmpbuf[UTF8_MAXLEN]; |
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| 409 | uv_to_utf8(tmpbuf, (UV)c); |
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| 410 | return to_utf8_upper(tmpbuf); |
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| 411 | } |
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| 412 | |
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| 413 | U32 |
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| 414 | Perl_to_uni_title(pTHX_ U32 c) |
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| 415 | { |
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| 416 | U8 tmpbuf[UTF8_MAXLEN]; |
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| 417 | uv_to_utf8(tmpbuf, (UV)c); |
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| 418 | return to_utf8_title(tmpbuf); |
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| 419 | } |
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| 420 | |
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| 421 | U32 |
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| 422 | Perl_to_uni_lower(pTHX_ U32 c) |
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| 423 | { |
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| 424 | U8 tmpbuf[UTF8_MAXLEN]; |
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| 425 | uv_to_utf8(tmpbuf, (UV)c); |
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| 426 | return to_utf8_lower(tmpbuf); |
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| 427 | } |
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| 428 | |
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| 429 | /* for now these all assume no locale info available for Unicode > 255 */ |
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| 430 | |
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| 431 | bool |
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| 432 | Perl_is_uni_alnum_lc(pTHX_ U32 c) |
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| 433 | { |
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| 434 | return is_uni_alnum(c); /* XXX no locale support yet */ |
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| 435 | } |
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| 436 | |
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| 437 | bool |
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| 438 | Perl_is_uni_alnumc_lc(pTHX_ U32 c) |
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| 439 | { |
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| 440 | return is_uni_alnumc(c); /* XXX no locale support yet */ |
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| 441 | } |
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| 442 | |
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| 443 | bool |
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| 444 | Perl_is_uni_idfirst_lc(pTHX_ U32 c) |
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| 445 | { |
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| 446 | return is_uni_idfirst(c); /* XXX no locale support yet */ |
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| 447 | } |
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| 448 | |
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| 449 | bool |
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| 450 | Perl_is_uni_alpha_lc(pTHX_ U32 c) |
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| 451 | { |
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| 452 | return is_uni_alpha(c); /* XXX no locale support yet */ |
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| 453 | } |
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| 454 | |
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| 455 | bool |
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| 456 | Perl_is_uni_ascii_lc(pTHX_ U32 c) |
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| 457 | { |
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| 458 | return is_uni_ascii(c); /* XXX no locale support yet */ |
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| 459 | } |
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| 460 | |
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| 461 | bool |
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| 462 | Perl_is_uni_space_lc(pTHX_ U32 c) |
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| 463 | { |
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| 464 | return is_uni_space(c); /* XXX no locale support yet */ |
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| 465 | } |
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| 466 | |
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| 467 | bool |
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| 468 | Perl_is_uni_digit_lc(pTHX_ U32 c) |
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| 469 | { |
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| 470 | return is_uni_digit(c); /* XXX no locale support yet */ |
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| 471 | } |
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| 472 | |
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| 473 | bool |
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| 474 | Perl_is_uni_upper_lc(pTHX_ U32 c) |
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| 475 | { |
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| 476 | return is_uni_upper(c); /* XXX no locale support yet */ |
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| 477 | } |
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| 478 | |
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| 479 | bool |
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| 480 | Perl_is_uni_lower_lc(pTHX_ U32 c) |
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| 481 | { |
---|
| 482 | return is_uni_lower(c); /* XXX no locale support yet */ |
---|
| 483 | } |
---|
| 484 | |
---|
| 485 | bool |
---|
| 486 | Perl_is_uni_cntrl_lc(pTHX_ U32 c) |
---|
| 487 | { |
---|
| 488 | return is_uni_cntrl(c); /* XXX no locale support yet */ |
---|
| 489 | } |
---|
| 490 | |
---|
| 491 | bool |
---|
| 492 | Perl_is_uni_graph_lc(pTHX_ U32 c) |
---|
| 493 | { |
---|
| 494 | return is_uni_graph(c); /* XXX no locale support yet */ |
---|
| 495 | } |
---|
| 496 | |
---|
| 497 | bool |
---|
| 498 | Perl_is_uni_print_lc(pTHX_ U32 c) |
---|
| 499 | { |
---|
| 500 | return is_uni_print(c); /* XXX no locale support yet */ |
---|
| 501 | } |
---|
| 502 | |
---|
| 503 | bool |
---|
| 504 | Perl_is_uni_punct_lc(pTHX_ U32 c) |
---|
| 505 | { |
---|
| 506 | return is_uni_punct(c); /* XXX no locale support yet */ |
---|
| 507 | } |
---|
| 508 | |
---|
| 509 | bool |
---|
| 510 | Perl_is_uni_xdigit_lc(pTHX_ U32 c) |
---|
| 511 | { |
---|
| 512 | return is_uni_xdigit(c); /* XXX no locale support yet */ |
---|
| 513 | } |
---|
| 514 | |
---|
| 515 | U32 |
---|
| 516 | Perl_to_uni_upper_lc(pTHX_ U32 c) |
---|
| 517 | { |
---|
| 518 | return to_uni_upper(c); /* XXX no locale support yet */ |
---|
| 519 | } |
---|
| 520 | |
---|
| 521 | U32 |
---|
| 522 | Perl_to_uni_title_lc(pTHX_ U32 c) |
---|
| 523 | { |
---|
| 524 | return to_uni_title(c); /* XXX no locale support yet */ |
---|
| 525 | } |
---|
| 526 | |
---|
| 527 | U32 |
---|
| 528 | Perl_to_uni_lower_lc(pTHX_ U32 c) |
---|
| 529 | { |
---|
| 530 | return to_uni_lower(c); /* XXX no locale support yet */ |
---|
| 531 | } |
---|
| 532 | |
---|
| 533 | bool |
---|
| 534 | Perl_is_utf8_alnum(pTHX_ U8 *p) |
---|
| 535 | { |
---|
| 536 | if (!is_utf8_char(p)) |
---|
| 537 | return FALSE; |
---|
| 538 | if (!PL_utf8_alnum) |
---|
| 539 | PL_utf8_alnum = swash_init("utf8", "IsAlnum", &PL_sv_undef, 0, 0); |
---|
| 540 | return swash_fetch(PL_utf8_alnum, p); |
---|
| 541 | /* return *p == '_' || is_utf8_alpha(p) || is_utf8_digit(p); */ |
---|
| 542 | #ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */ |
---|
| 543 | if (!PL_utf8_alnum) |
---|
| 544 | PL_utf8_alnum = swash_init("utf8", "", |
---|
| 545 | sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0); |
---|
| 546 | return swash_fetch(PL_utf8_alnum, p); |
---|
| 547 | #endif |
---|
| 548 | } |
---|
| 549 | |
---|
| 550 | bool |
---|
| 551 | Perl_is_utf8_alnumc(pTHX_ U8 *p) |
---|
| 552 | { |
---|
| 553 | if (!is_utf8_char(p)) |
---|
| 554 | return FALSE; |
---|
| 555 | if (!PL_utf8_alnum) |
---|
| 556 | PL_utf8_alnum = swash_init("utf8", "IsAlnumC", &PL_sv_undef, 0, 0); |
---|
| 557 | return swash_fetch(PL_utf8_alnum, p); |
---|
| 558 | /* return is_utf8_alpha(p) || is_utf8_digit(p); */ |
---|
| 559 | #ifdef SURPRISINGLY_SLOWER /* probably because alpha is usually true */ |
---|
| 560 | if (!PL_utf8_alnum) |
---|
| 561 | PL_utf8_alnum = swash_init("utf8", "", |
---|
| 562 | sv_2mortal(newSVpv("+utf8::IsAlpha\n+utf8::IsDigit\n005F\n",0)), 0, 0); |
---|
| 563 | return swash_fetch(PL_utf8_alnum, p); |
---|
| 564 | #endif |
---|
| 565 | } |
---|
| 566 | |
---|
| 567 | bool |
---|
| 568 | Perl_is_utf8_idfirst(pTHX_ U8 *p) |
---|
| 569 | { |
---|
| 570 | return *p == '_' || is_utf8_alpha(p); |
---|
| 571 | } |
---|
| 572 | |
---|
| 573 | bool |
---|
| 574 | Perl_is_utf8_alpha(pTHX_ U8 *p) |
---|
| 575 | { |
---|
| 576 | if (!is_utf8_char(p)) |
---|
| 577 | return FALSE; |
---|
| 578 | if (!PL_utf8_alpha) |
---|
| 579 | PL_utf8_alpha = swash_init("utf8", "IsAlpha", &PL_sv_undef, 0, 0); |
---|
| 580 | return swash_fetch(PL_utf8_alpha, p); |
---|
| 581 | } |
---|
| 582 | |
---|
| 583 | bool |
---|
| 584 | Perl_is_utf8_ascii(pTHX_ U8 *p) |
---|
| 585 | { |
---|
| 586 | if (!is_utf8_char(p)) |
---|
| 587 | return FALSE; |
---|
| 588 | if (!PL_utf8_ascii) |
---|
| 589 | PL_utf8_ascii = swash_init("utf8", "IsAscii", &PL_sv_undef, 0, 0); |
---|
| 590 | return swash_fetch(PL_utf8_ascii, p); |
---|
| 591 | } |
---|
| 592 | |
---|
| 593 | bool |
---|
| 594 | Perl_is_utf8_space(pTHX_ U8 *p) |
---|
| 595 | { |
---|
| 596 | if (!is_utf8_char(p)) |
---|
| 597 | return FALSE; |
---|
| 598 | if (!PL_utf8_space) |
---|
| 599 | PL_utf8_space = swash_init("utf8", "IsSpace", &PL_sv_undef, 0, 0); |
---|
| 600 | return swash_fetch(PL_utf8_space, p); |
---|
| 601 | } |
---|
| 602 | |
---|
| 603 | bool |
---|
| 604 | Perl_is_utf8_digit(pTHX_ U8 *p) |
---|
| 605 | { |
---|
| 606 | if (!is_utf8_char(p)) |
---|
| 607 | return FALSE; |
---|
| 608 | if (!PL_utf8_digit) |
---|
| 609 | PL_utf8_digit = swash_init("utf8", "IsDigit", &PL_sv_undef, 0, 0); |
---|
| 610 | return swash_fetch(PL_utf8_digit, p); |
---|
| 611 | } |
---|
| 612 | |
---|
| 613 | bool |
---|
| 614 | Perl_is_utf8_upper(pTHX_ U8 *p) |
---|
| 615 | { |
---|
| 616 | if (!is_utf8_char(p)) |
---|
| 617 | return FALSE; |
---|
| 618 | if (!PL_utf8_upper) |
---|
| 619 | PL_utf8_upper = swash_init("utf8", "IsUpper", &PL_sv_undef, 0, 0); |
---|
| 620 | return swash_fetch(PL_utf8_upper, p); |
---|
| 621 | } |
---|
| 622 | |
---|
| 623 | bool |
---|
| 624 | Perl_is_utf8_lower(pTHX_ U8 *p) |
---|
| 625 | { |
---|
| 626 | if (!is_utf8_char(p)) |
---|
| 627 | return FALSE; |
---|
| 628 | if (!PL_utf8_lower) |
---|
| 629 | PL_utf8_lower = swash_init("utf8", "IsLower", &PL_sv_undef, 0, 0); |
---|
| 630 | return swash_fetch(PL_utf8_lower, p); |
---|
| 631 | } |
---|
| 632 | |
---|
| 633 | bool |
---|
| 634 | Perl_is_utf8_cntrl(pTHX_ U8 *p) |
---|
| 635 | { |
---|
| 636 | if (!is_utf8_char(p)) |
---|
| 637 | return FALSE; |
---|
| 638 | if (!PL_utf8_cntrl) |
---|
| 639 | PL_utf8_cntrl = swash_init("utf8", "IsCntrl", &PL_sv_undef, 0, 0); |
---|
| 640 | return swash_fetch(PL_utf8_cntrl, p); |
---|
| 641 | } |
---|
| 642 | |
---|
| 643 | bool |
---|
| 644 | Perl_is_utf8_graph(pTHX_ U8 *p) |
---|
| 645 | { |
---|
| 646 | if (!is_utf8_char(p)) |
---|
| 647 | return FALSE; |
---|
| 648 | if (!PL_utf8_graph) |
---|
| 649 | PL_utf8_graph = swash_init("utf8", "IsGraph", &PL_sv_undef, 0, 0); |
---|
| 650 | return swash_fetch(PL_utf8_graph, p); |
---|
| 651 | } |
---|
| 652 | |
---|
| 653 | bool |
---|
| 654 | Perl_is_utf8_print(pTHX_ U8 *p) |
---|
| 655 | { |
---|
| 656 | if (!is_utf8_char(p)) |
---|
| 657 | return FALSE; |
---|
| 658 | if (!PL_utf8_print) |
---|
| 659 | PL_utf8_print = swash_init("utf8", "IsPrint", &PL_sv_undef, 0, 0); |
---|
| 660 | return swash_fetch(PL_utf8_print, p); |
---|
| 661 | } |
---|
| 662 | |
---|
| 663 | bool |
---|
| 664 | Perl_is_utf8_punct(pTHX_ U8 *p) |
---|
| 665 | { |
---|
| 666 | if (!is_utf8_char(p)) |
---|
| 667 | return FALSE; |
---|
| 668 | if (!PL_utf8_punct) |
---|
| 669 | PL_utf8_punct = swash_init("utf8", "IsPunct", &PL_sv_undef, 0, 0); |
---|
| 670 | return swash_fetch(PL_utf8_punct, p); |
---|
| 671 | } |
---|
| 672 | |
---|
| 673 | bool |
---|
| 674 | Perl_is_utf8_xdigit(pTHX_ U8 *p) |
---|
| 675 | { |
---|
| 676 | if (!is_utf8_char(p)) |
---|
| 677 | return FALSE; |
---|
| 678 | if (!PL_utf8_xdigit) |
---|
| 679 | PL_utf8_xdigit = swash_init("utf8", "IsXDigit", &PL_sv_undef, 0, 0); |
---|
| 680 | return swash_fetch(PL_utf8_xdigit, p); |
---|
| 681 | } |
---|
| 682 | |
---|
| 683 | bool |
---|
| 684 | Perl_is_utf8_mark(pTHX_ U8 *p) |
---|
| 685 | { |
---|
| 686 | if (!is_utf8_char(p)) |
---|
| 687 | return FALSE; |
---|
| 688 | if (!PL_utf8_mark) |
---|
| 689 | PL_utf8_mark = swash_init("utf8", "IsM", &PL_sv_undef, 0, 0); |
---|
| 690 | return swash_fetch(PL_utf8_mark, p); |
---|
| 691 | } |
---|
| 692 | |
---|
| 693 | UV |
---|
| 694 | Perl_to_utf8_upper(pTHX_ U8 *p) |
---|
| 695 | { |
---|
| 696 | UV uv; |
---|
| 697 | |
---|
| 698 | if (!PL_utf8_toupper) |
---|
| 699 | PL_utf8_toupper = swash_init("utf8", "ToUpper", &PL_sv_undef, 4, 0); |
---|
| 700 | uv = swash_fetch(PL_utf8_toupper, p); |
---|
| 701 | return uv ? uv : utf8_to_uv(p,0); |
---|
| 702 | } |
---|
| 703 | |
---|
| 704 | UV |
---|
| 705 | Perl_to_utf8_title(pTHX_ U8 *p) |
---|
| 706 | { |
---|
| 707 | UV uv; |
---|
| 708 | |
---|
| 709 | if (!PL_utf8_totitle) |
---|
| 710 | PL_utf8_totitle = swash_init("utf8", "ToTitle", &PL_sv_undef, 4, 0); |
---|
| 711 | uv = swash_fetch(PL_utf8_totitle, p); |
---|
| 712 | return uv ? uv : utf8_to_uv(p,0); |
---|
| 713 | } |
---|
| 714 | |
---|
| 715 | UV |
---|
| 716 | Perl_to_utf8_lower(pTHX_ U8 *p) |
---|
| 717 | { |
---|
| 718 | UV uv; |
---|
| 719 | |
---|
| 720 | if (!PL_utf8_tolower) |
---|
| 721 | PL_utf8_tolower = swash_init("utf8", "ToLower", &PL_sv_undef, 4, 0); |
---|
| 722 | uv = swash_fetch(PL_utf8_tolower, p); |
---|
| 723 | return uv ? uv : utf8_to_uv(p,0); |
---|
| 724 | } |
---|
| 725 | |
---|
| 726 | /* a "swash" is a swatch hash */ |
---|
| 727 | |
---|
| 728 | SV* |
---|
| 729 | Perl_swash_init(pTHX_ char* pkg, char* name, SV *listsv, I32 minbits, I32 none) |
---|
| 730 | { |
---|
| 731 | SV* retval; |
---|
| 732 | char tmpbuf[256]; |
---|
| 733 | dSP; |
---|
| 734 | |
---|
| 735 | if (!gv_stashpv(pkg, 0)) { /* demand load utf8 */ |
---|
| 736 | ENTER; |
---|
| 737 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, newSVpv(pkg,0), Nullsv); |
---|
| 738 | LEAVE; |
---|
| 739 | } |
---|
| 740 | SPAGAIN; |
---|
| 741 | PUSHSTACKi(PERLSI_MAGIC); |
---|
| 742 | PUSHMARK(SP); |
---|
| 743 | EXTEND(SP,5); |
---|
| 744 | PUSHs(sv_2mortal(newSVpvn(pkg, strlen(pkg)))); |
---|
| 745 | PUSHs(sv_2mortal(newSVpvn(name, strlen(name)))); |
---|
| 746 | PUSHs(listsv); |
---|
| 747 | PUSHs(sv_2mortal(newSViv(minbits))); |
---|
| 748 | PUSHs(sv_2mortal(newSViv(none))); |
---|
| 749 | PUTBACK; |
---|
| 750 | ENTER; |
---|
| 751 | SAVEI32(PL_hints); |
---|
| 752 | PL_hints = 0; |
---|
| 753 | save_re_context(); |
---|
| 754 | if (PL_curcop == &PL_compiling) /* XXX ought to be handled by lex_start */ |
---|
| 755 | strncpy(tmpbuf, PL_tokenbuf, sizeof tmpbuf); |
---|
| 756 | if (call_method("SWASHNEW", G_SCALAR)) |
---|
| 757 | retval = newSVsv(*PL_stack_sp--); |
---|
| 758 | else |
---|
| 759 | retval = &PL_sv_undef; |
---|
| 760 | LEAVE; |
---|
| 761 | POPSTACK; |
---|
| 762 | if (PL_curcop == &PL_compiling) { |
---|
| 763 | strncpy(PL_tokenbuf, tmpbuf, sizeof tmpbuf); |
---|
| 764 | PL_curcop->op_private = PL_hints; |
---|
| 765 | } |
---|
| 766 | if (!SvROK(retval) || SvTYPE(SvRV(retval)) != SVt_PVHV) |
---|
| 767 | Perl_croak(aTHX_ "SWASHNEW didn't return an HV ref"); |
---|
| 768 | return retval; |
---|
| 769 | } |
---|
| 770 | |
---|
| 771 | UV |
---|
| 772 | Perl_swash_fetch(pTHX_ SV *sv, U8 *ptr) |
---|
| 773 | { |
---|
| 774 | HV* hv = (HV*)SvRV(sv); |
---|
| 775 | U32 klen = UTF8SKIP(ptr) - 1; |
---|
| 776 | U32 off = ptr[klen] & 127; /* NB: 64 bit always 0 when len > 1 */ |
---|
| 777 | STRLEN slen; |
---|
| 778 | STRLEN needents = (klen ? 64 : 128); |
---|
| 779 | U8 *tmps; |
---|
| 780 | U32 bit; |
---|
| 781 | SV *retval; |
---|
| 782 | |
---|
| 783 | /* |
---|
| 784 | * This single-entry cache saves about 1/3 of the utf8 overhead in test |
---|
| 785 | * suite. (That is, only 7-8% overall over just a hash cache. Still, |
---|
| 786 | * it's nothing to sniff at.) Pity we usually come through at least |
---|
| 787 | * two function calls to get here... |
---|
| 788 | * |
---|
| 789 | * NB: this code assumes that swatches are never modified, once generated! |
---|
| 790 | */ |
---|
| 791 | |
---|
| 792 | if (hv == PL_last_swash_hv && |
---|
| 793 | klen == PL_last_swash_klen && |
---|
| 794 | (!klen || memEQ(ptr,PL_last_swash_key,klen)) ) |
---|
| 795 | { |
---|
| 796 | tmps = PL_last_swash_tmps; |
---|
| 797 | slen = PL_last_swash_slen; |
---|
| 798 | } |
---|
| 799 | else { |
---|
| 800 | /* Try our second-level swatch cache, kept in a hash. */ |
---|
| 801 | SV** svp = hv_fetch(hv, (char*)ptr, klen, FALSE); |
---|
| 802 | |
---|
| 803 | /* If not cached, generate it via utf8::SWASHGET */ |
---|
| 804 | if (!svp || !SvPOK(*svp) || !(tmps = (U8*)SvPV(*svp, slen))) { |
---|
| 805 | dSP; |
---|
| 806 | ENTER; |
---|
| 807 | SAVETMPS; |
---|
| 808 | save_re_context(); |
---|
| 809 | PUSHSTACKi(PERLSI_MAGIC); |
---|
| 810 | PUSHMARK(SP); |
---|
| 811 | EXTEND(SP,3); |
---|
| 812 | PUSHs((SV*)sv); |
---|
| 813 | PUSHs(sv_2mortal(newSViv(utf8_to_uv(ptr, 0) & ~(needents - 1)))); |
---|
| 814 | PUSHs(sv_2mortal(newSViv(needents))); |
---|
| 815 | PUTBACK; |
---|
| 816 | if (call_method("SWASHGET", G_SCALAR)) |
---|
| 817 | retval = newSVsv(*PL_stack_sp--); |
---|
| 818 | else |
---|
| 819 | retval = &PL_sv_undef; |
---|
| 820 | POPSTACK; |
---|
| 821 | FREETMPS; |
---|
| 822 | LEAVE; |
---|
| 823 | if (PL_curcop == &PL_compiling) |
---|
| 824 | PL_curcop->op_private = PL_hints; |
---|
| 825 | |
---|
| 826 | svp = hv_store(hv, (char*)ptr, klen, retval, 0); |
---|
| 827 | |
---|
| 828 | if (!svp || !(tmps = (U8*)SvPV(*svp, slen)) || slen < 8) |
---|
| 829 | Perl_croak(aTHX_ "SWASHGET didn't return result of proper length"); |
---|
| 830 | } |
---|
| 831 | |
---|
| 832 | PL_last_swash_hv = hv; |
---|
| 833 | PL_last_swash_klen = klen; |
---|
| 834 | PL_last_swash_tmps = tmps; |
---|
| 835 | PL_last_swash_slen = slen; |
---|
| 836 | if (klen) |
---|
| 837 | Copy(ptr, PL_last_swash_key, klen, U8); |
---|
| 838 | } |
---|
| 839 | |
---|
| 840 | switch ((slen << 3) / needents) { |
---|
| 841 | case 1: |
---|
| 842 | bit = 1 << (off & 7); |
---|
| 843 | off >>= 3; |
---|
| 844 | return (tmps[off] & bit) != 0; |
---|
| 845 | case 8: |
---|
| 846 | return tmps[off]; |
---|
| 847 | case 16: |
---|
| 848 | off <<= 1; |
---|
| 849 | return (tmps[off] << 8) + tmps[off + 1] ; |
---|
| 850 | case 32: |
---|
| 851 | off <<= 2; |
---|
| 852 | return (tmps[off] << 24) + (tmps[off+1] << 16) + (tmps[off+2] << 8) + tmps[off + 3] ; |
---|
| 853 | } |
---|
| 854 | Perl_croak(aTHX_ "panic: swash_fetch"); |
---|
| 855 | return 0; |
---|
| 856 | } |
---|