| 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * Unicode support routines.
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| 4 | *
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| 5 | * Copyright (C) 2009 Denys Vlasenko
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| 6 | *
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| 7 | * Licensed under GPLv2, see file LICENSE in this source tree.
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| 8 | */
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| 9 | #include "libbb.h"
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| 10 | #include "unicode.h"
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| 11 |
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| 12 | /* If it's not #defined as a constant in unicode.h... */
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| 13 | #ifndef unicode_status
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| 14 | uint8_t unicode_status;
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| 15 | #endif
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| 16 |
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| 17 | /* This file is compiled only if UNICODE_SUPPORT is on.
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| 18 | * We check other options and decide whether to use libc support
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| 19 | * via locale, or use our own logic:
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| 20 | */
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| 21 |
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| 22 | #if ENABLE_UNICODE_USING_LOCALE
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| 23 |
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| 24 | /* Unicode support using libc locale support. */
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| 25 |
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| 26 | void FAST_FUNC reinit_unicode(const char *LANG)
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| 27 | {
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| 28 | static const char unicode_0x394[] = { 0xce, 0x94, 0 };
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| 29 | size_t width;
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| 30 |
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| 31 | /* We pass "" instead of "C" because some libc's have
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| 32 | * non-ASCII default locale for setlocale("") call
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| 33 | * (this allows users of such libc to have Unicoded
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| 34 | * system without having to mess with env).
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| 35 | *
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| 36 | * We set LC_CTYPE because (a) we may be called with $LC_CTYPE
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| 37 | * value in LANG, not with $LC_ALL, (b) internationalized
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| 38 | * LC_NUMERIC and LC_TIME are more PITA than benefit
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| 39 | * (for one, some utilities have hard time with comma
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| 40 | * used as a fractional separator).
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| 41 | */
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| 42 | //TODO: avoid repeated calls by caching last string?
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| 43 | setlocale(LC_CTYPE, LANG ? LANG : "");
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| 44 |
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| 45 | /* In unicode, this is a one character string */
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| 46 | width = unicode_strlen(unicode_0x394);
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| 47 | unicode_status = (width == 1 ? UNICODE_ON : UNICODE_OFF);
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| 48 | }
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| 49 |
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| 50 | void FAST_FUNC init_unicode(void)
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| 51 | {
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| 52 | /* Some people set only $LC_CTYPE, not $LC_ALL, because they want
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| 53 | * only Unicode to be activated on their system, not the whole
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| 54 | * shebang of wrong decimal points, strange date formats and so on.
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| 55 | */
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| 56 | if (unicode_status == UNICODE_UNKNOWN) {
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| 57 | char *s = getenv("LC_ALL");
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| 58 | if (!s) s = getenv("LC_CTYPE");
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| 59 | if (!s) s = getenv("LANG");
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| 60 | reinit_unicode(s);
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| 61 | }
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| 62 | }
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| 63 |
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| 64 | #else
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| 65 |
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| 66 | /* Homegrown Unicode support. It knows only C and Unicode locales. */
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| 67 |
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| 68 | # if ENABLE_FEATURE_CHECK_UNICODE_IN_ENV
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| 69 | void FAST_FUNC reinit_unicode(const char *LANG)
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| 70 | {
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| 71 | unicode_status = UNICODE_OFF;
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| 72 | if (!LANG || !(strstr(LANG, ".utf") || strstr(LANG, ".UTF")))
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| 73 | return;
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| 74 | unicode_status = UNICODE_ON;
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| 75 | }
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| 76 |
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| 77 | void FAST_FUNC init_unicode(void)
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| 78 | {
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| 79 | if (unicode_status == UNICODE_UNKNOWN) {
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| 80 | char *s = getenv("LC_ALL");
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| 81 | if (!s) s = getenv("LC_CTYPE");
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| 82 | if (!s) s = getenv("LANG");
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| 83 | reinit_unicode(s);
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| 84 | }
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| 85 | }
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| 86 | # endif
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| 87 |
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| 88 | static size_t wcrtomb_internal(char *s, wchar_t wc)
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| 89 | {
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| 90 | int n, i;
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| 91 | uint32_t v = wc;
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| 92 |
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| 93 | if (v <= 0x7f) {
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| 94 | *s = v;
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| 95 | return 1;
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| 96 | }
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| 97 |
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| 98 | /* RFC 3629 says that Unicode ends at 10FFFF,
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| 99 | * but we cover entire 32 bits */
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| 100 |
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| 101 | /* 4000000-FFFFFFFF -> 111111tt 10tttttt 10zzzzzz 10zzyyyy 10yyyyxx 10xxxxxx */
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| 102 | /* 200000-3FFFFFF -> 111110tt 10zzzzzz 10zzyyyy 10yyyyxx 10xxxxxx */
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| 103 | /* 10000-1FFFFF -> 11110zzz 10zzyyyy 10yyyyxx 10xxxxxx */
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| 104 | /* 800-FFFF -> 1110yyyy 10yyyyxx 10xxxxxx */
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| 105 | /* 80-7FF -> 110yyyxx 10xxxxxx */
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| 106 |
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| 107 | /* How many bytes do we need? */
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| 108 | n = 2;
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| 109 | /* (0x80000000+ would result in n = 7, limiting n to 6) */
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| 110 | while (v >= 0x800 && n < 6) {
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| 111 | v >>= 5;
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| 112 | n++;
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| 113 | }
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| 114 | /* Fill bytes n-1..1 */
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| 115 | i = n;
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| 116 | while (--i) {
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| 117 | s[i] = (wc & 0x3f) | 0x80;
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| 118 | wc >>= 6;
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| 119 | }
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| 120 | /* Fill byte 0 */
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| 121 | s[0] = wc | (uint8_t)(0x3f00 >> n);
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| 122 | return n;
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| 123 | }
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| 124 | size_t FAST_FUNC wcrtomb(char *s, wchar_t wc, mbstate_t *ps UNUSED_PARAM)
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| 125 | {
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| 126 | if (unicode_status != UNICODE_ON) {
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| 127 | *s = wc;
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| 128 | return 1;
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| 129 | }
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| 130 |
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| 131 | return wcrtomb_internal(s, wc);
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| 132 | }
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| 133 | size_t FAST_FUNC wcstombs(char *dest, const wchar_t *src, size_t n)
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| 134 | {
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| 135 | size_t org_n = n;
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| 136 |
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| 137 | if (unicode_status != UNICODE_ON) {
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| 138 | while (n) {
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| 139 | wchar_t c = *src++;
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| 140 | *dest++ = c;
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| 141 | if (c == 0)
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| 142 | break;
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| 143 | n--;
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| 144 | }
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| 145 | return org_n - n;
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| 146 | }
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| 147 |
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| 148 | while (n >= MB_CUR_MAX) {
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| 149 | wchar_t wc = *src++;
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| 150 | size_t len = wcrtomb_internal(dest, wc);
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| 151 |
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| 152 | if (wc == L'\0')
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| 153 | return org_n - n;
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| 154 | dest += len;
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| 155 | n -= len;
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| 156 | }
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| 157 | while (n) {
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| 158 | char tbuf[MB_CUR_MAX];
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| 159 | wchar_t wc = *src++;
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| 160 | size_t len = wcrtomb_internal(tbuf, wc);
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| 161 |
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| 162 | if (len > n)
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| 163 | break;
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| 164 | memcpy(dest, tbuf, len);
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| 165 | if (wc == L'\0')
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| 166 | return org_n - n;
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| 167 | dest += len;
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| 168 | n -= len;
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| 169 | }
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| 170 | return org_n - n;
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| 171 | }
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| 172 |
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| 173 | # define ERROR_WCHAR (~(wchar_t)0)
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| 174 |
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| 175 | static const char *mbstowc_internal(wchar_t *res, const char *src)
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| 176 | {
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| 177 | int bytes;
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| 178 | unsigned c = (unsigned char) *src++;
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| 179 |
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| 180 | if (c <= 0x7f) {
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| 181 | *res = c;
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| 182 | return src;
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| 183 | }
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| 184 |
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| 185 | /* 80-7FF -> 110yyyxx 10xxxxxx */
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| 186 | /* 800-FFFF -> 1110yyyy 10yyyyxx 10xxxxxx */
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| 187 | /* 10000-1FFFFF -> 11110zzz 10zzyyyy 10yyyyxx 10xxxxxx */
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| 188 | /* 200000-3FFFFFF -> 111110tt 10zzzzzz 10zzyyyy 10yyyyxx 10xxxxxx */
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| 189 | /* 4000000-FFFFFFFF -> 111111tt 10tttttt 10zzzzzz 10zzyyyy 10yyyyxx 10xxxxxx */
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| 190 | bytes = 0;
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| 191 | do {
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| 192 | c <<= 1;
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| 193 | bytes++;
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| 194 | } while ((c & 0x80) && bytes < 6);
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| 195 | if (bytes == 1) {
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| 196 | /* A bare "continuation" byte. Say, 80 */
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| 197 | *res = ERROR_WCHAR;
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| 198 | return src;
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| 199 | }
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| 200 | c = (uint8_t)(c) >> bytes;
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| 201 |
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| 202 | while (--bytes) {
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| 203 | unsigned ch = (unsigned char) *src;
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| 204 | if ((ch & 0xc0) != 0x80) {
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| 205 | /* Missing "continuation" byte. Example: e0 80 */
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| 206 | *res = ERROR_WCHAR;
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| 207 | return src;
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| 208 | }
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| 209 | c = (c << 6) + (ch & 0x3f);
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| 210 | src++;
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| 211 | }
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| 212 |
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| 213 | /* TODO */
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| 214 | /* Need to check that c isn't produced by overlong encoding */
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| 215 | /* Example: 11000000 10000000 converts to NUL */
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| 216 | /* 11110000 10000000 10000100 10000000 converts to 0x100 */
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| 217 | /* correct encoding: 11000100 10000000 */
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| 218 | if (c <= 0x7f) { /* crude check */
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| 219 | *res = ERROR_WCHAR;
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| 220 | return src;
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| 221 | }
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| 222 |
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| 223 | *res = c;
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| 224 | return src;
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| 225 | }
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| 226 | size_t FAST_FUNC mbstowcs(wchar_t *dest, const char *src, size_t n)
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| 227 | {
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| 228 | size_t org_n = n;
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| 229 |
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| 230 | if (unicode_status != UNICODE_ON) {
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| 231 | while (n) {
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| 232 | unsigned char c = *src++;
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| 233 |
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| 234 | if (dest)
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| 235 | *dest++ = c;
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| 236 | if (c == 0)
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| 237 | break;
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| 238 | n--;
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| 239 | }
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| 240 | return org_n - n;
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| 241 | }
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| 242 |
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| 243 | while (n) {
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| 244 | wchar_t wc;
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| 245 | src = mbstowc_internal(&wc, src);
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| 246 | if (wc == ERROR_WCHAR) /* error */
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| 247 | return (size_t) -1L;
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| 248 | if (dest)
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| 249 | *dest++ = wc;
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| 250 | if (wc == 0) /* end-of-string */
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| 251 | break;
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| 252 | n--;
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| 253 | }
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| 254 |
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| 255 | return org_n - n;
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| 256 | }
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| 257 |
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| 258 | int FAST_FUNC iswspace(wint_t wc)
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| 259 | {
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| 260 | return (unsigned)wc <= 0x7f && isspace(wc);
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| 261 | }
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| 262 |
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| 263 | int FAST_FUNC iswalnum(wint_t wc)
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| 264 | {
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| 265 | return (unsigned)wc <= 0x7f && isalnum(wc);
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| 266 | }
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| 267 |
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| 268 | int FAST_FUNC iswpunct(wint_t wc)
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| 269 | {
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| 270 | return (unsigned)wc <= 0x7f && ispunct(wc);
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| 271 | }
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| 272 |
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| 273 |
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| 274 | # if CONFIG_LAST_SUPPORTED_WCHAR >= 0x300
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| 275 | struct interval {
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| 276 | uint16_t first;
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| 277 | uint16_t last;
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| 278 | };
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| 279 |
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| 280 | /* auxiliary function for binary search in interval table */
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| 281 | static int in_interval_table(unsigned ucs, const struct interval *table, unsigned max)
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| 282 | {
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| 283 | unsigned min;
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| 284 | unsigned mid;
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| 285 |
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| 286 | if (ucs < table[0].first || ucs > table[max].last)
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| 287 | return 0;
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| 288 |
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| 289 | min = 0;
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| 290 | while (max >= min) {
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| 291 | mid = (min + max) / 2;
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| 292 | if (ucs > table[mid].last)
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| 293 | min = mid + 1;
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| 294 | else if (ucs < table[mid].first)
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| 295 | max = mid - 1;
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| 296 | else
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| 297 | return 1;
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| 298 | }
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| 299 | return 0;
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| 300 | }
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| 301 |
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| 302 | static int in_uint16_table(unsigned ucs, const uint16_t *table, unsigned max)
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| 303 | {
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| 304 | unsigned min;
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| 305 | unsigned mid;
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| 306 | unsigned first, last;
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| 307 |
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| 308 | first = table[0] >> 2;
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| 309 | last = first + (table[0] & 3);
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| 310 | if (ucs < first || ucs > last)
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| 311 | return 0;
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| 312 |
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| 313 | min = 0;
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| 314 | while (max >= min) {
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| 315 | mid = (min + max) / 2;
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| 316 | first = table[mid] >> 2;
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| 317 | last = first + (table[mid] & 3);
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| 318 | if (ucs > last)
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| 319 | min = mid + 1;
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| 320 | else if (ucs < first)
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| 321 | max = mid - 1;
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| 322 | else
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| 323 | return 1;
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| 324 | }
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| 325 | return 0;
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| 326 | }
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| 327 | # endif
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| 328 |
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| 329 |
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| 330 | /*
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| 331 | * This is an implementation of wcwidth() and wcswidth() (defined in
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| 332 | * IEEE Std 1002.1-2001) for Unicode.
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| 333 | *
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| 334 | * http://www.opengroup.org/onlinepubs/007904975/functions/wcwidth.html
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| 335 | * http://www.opengroup.org/onlinepubs/007904975/functions/wcswidth.html
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| 336 | *
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| 337 | * In fixed-width output devices, Latin characters all occupy a single
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| 338 | * "cell" position of equal width, whereas ideographic CJK characters
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| 339 | * occupy two such cells. Interoperability between terminal-line
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| 340 | * applications and (teletype-style) character terminals using the
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| 341 | * UTF-8 encoding requires agreement on which character should advance
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| 342 | * the cursor by how many cell positions. No established formal
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| 343 | * standards exist at present on which Unicode character shall occupy
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| 344 | * how many cell positions on character terminals. These routines are
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| 345 | * a first attempt of defining such behavior based on simple rules
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| 346 | * applied to data provided by the Unicode Consortium.
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| 347 | *
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| 348 | * For some graphical characters, the Unicode standard explicitly
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| 349 | * defines a character-cell width via the definition of the East Asian
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| 350 | * FullWidth (F), Wide (W), Half-width (H), and Narrow (Na) classes.
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| 351 | * In all these cases, there is no ambiguity about which width a
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| 352 | * terminal shall use. For characters in the East Asian Ambiguous (A)
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| 353 | * class, the width choice depends purely on a preference of backward
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| 354 | * compatibility with either historic CJK or Western practice.
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| 355 | * Choosing single-width for these characters is easy to justify as
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| 356 | * the appropriate long-term solution, as the CJK practice of
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| 357 | * displaying these characters as double-width comes from historic
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| 358 | * implementation simplicity (8-bit encoded characters were displayed
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| 359 | * single-width and 16-bit ones double-width, even for Greek,
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| 360 | * Cyrillic, etc.) and not any typographic considerations.
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| 361 | *
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| 362 | * Much less clear is the choice of width for the Not East Asian
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| 363 | * (Neutral) class. Existing practice does not dictate a width for any
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| 364 | * of these characters. It would nevertheless make sense
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| 365 | * typographically to allocate two character cells to characters such
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| 366 | * as for instance EM SPACE or VOLUME INTEGRAL, which cannot be
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| 367 | * represented adequately with a single-width glyph. The following
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| 368 | * routines at present merely assign a single-cell width to all
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| 369 | * neutral characters, in the interest of simplicity. This is not
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| 370 | * entirely satisfactory and should be reconsidered before
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| 371 | * establishing a formal standard in this area. At the moment, the
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| 372 | * decision which Not East Asian (Neutral) characters should be
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| 373 | * represented by double-width glyphs cannot yet be answered by
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| 374 | * applying a simple rule from the Unicode database content. Setting
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| 375 | * up a proper standard for the behavior of UTF-8 character terminals
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| 376 | * will require a careful analysis not only of each Unicode character,
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| 377 | * but also of each presentation form, something the author of these
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| 378 | * routines has avoided to do so far.
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| 379 | *
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| 380 | * http://www.unicode.org/unicode/reports/tr11/
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| 381 | *
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| 382 | * Markus Kuhn -- 2007-05-26 (Unicode 5.0)
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| 383 | *
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| 384 | * Permission to use, copy, modify, and distribute this software
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| 385 | * for any purpose and without fee is hereby granted. The author
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| 386 | * disclaims all warranties with regard to this software.
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| 387 | *
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| 388 | * Latest version: http://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c
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| 389 | */
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| 390 |
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| 391 | /* Assigned Unicode character ranges:
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| 392 | * Plane Range
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| 393 | * 0 0000–FFFF Basic Multilingual Plane
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| 394 | * 1 10000–1FFFF Supplementary Multilingual Plane
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| 395 | * 2 20000–2FFFF Supplementary Ideographic Plane
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| 396 | * 3 30000-3FFFF Tertiary Ideographic Plane (no chars assigned yet)
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| 397 | * 4-13 40000–DFFFF currently unassigned
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| 398 | * 14 E0000–EFFFF Supplementary Special-purpose Plane
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| 399 | * 15 F0000–FFFFF Supplementary Private Use Area-A
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| 400 | * 16 100000–10FFFF Supplementary Private Use Area-B
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| 401 | *
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| 402 | * "Supplementary Special-purpose Plane currently contains non-graphical
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| 403 | * characters in two blocks of 128 and 240 characters. The first block
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| 404 | * is for language tag characters for use when language cannot be indicated
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| 405 | * through other protocols (such as the xml:lang attribute in XML).
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| 406 | * The other block contains glyph variation selectors to indicate
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| 407 | * an alternate glyph for a character that cannot be determined by context."
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| 408 | *
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| 409 | * In simpler terms: it is a tool to fix the "Han unification" mess
|
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| 410 | * created by Unicode committee, to select Chinese/Japanese/Korean/Taiwan
|
|---|
| 411 | * version of a character. (They forgot that the whole purpose of the Unicode
|
|---|
| 412 | * was to be able to write all chars in one charset without such tricks).
|
|---|
| 413 | * Until East Asian users say it is actually necessary to support these
|
|---|
| 414 | * code points in console applications like busybox
|
|---|
| 415 | * (i.e. do these chars ever appear in filenames, hostnames, text files
|
|---|
| 416 | * and such?), we are treating these code points as invalid.
|
|---|
| 417 | *
|
|---|
| 418 | * Tertiary Ideographic Plane is also ignored for now,
|
|---|
| 419 | * until Unicode committee assigns something there.
|
|---|
| 420 | */
|
|---|
| 421 | /* The following two functions define the column width of an ISO 10646
|
|---|
| 422 | * character as follows:
|
|---|
| 423 | *
|
|---|
| 424 | * - The null character (U+0000) has a column width of 0.
|
|---|
| 425 | *
|
|---|
| 426 | * - Other C0/C1 control characters and DEL will lead to a return
|
|---|
| 427 | * value of -1.
|
|---|
| 428 | *
|
|---|
| 429 | * - Non-spacing and enclosing combining characters (general
|
|---|
| 430 | * category code Mn or Me in the Unicode database) have a
|
|---|
| 431 | * column width of 0.
|
|---|
| 432 | *
|
|---|
| 433 | * - SOFT HYPHEN (U+00AD) has a column width of 1.
|
|---|
| 434 | *
|
|---|
| 435 | * - Other format characters (general category code Cf in the Unicode
|
|---|
| 436 | * database) and ZERO WIDTH SPACE (U+200B) have a column width of 0.
|
|---|
| 437 | *
|
|---|
| 438 | * - Hangul Jamo medial vowels and final consonants (U+1160-U+11FF)
|
|---|
| 439 | * have a column width of 0.
|
|---|
| 440 | *
|
|---|
| 441 | * - Spacing characters in the East Asian Wide (W) or East Asian
|
|---|
| 442 | * Full-width (F) category as defined in Unicode Technical
|
|---|
| 443 | * Report #11 have a column width of 2.
|
|---|
| 444 | *
|
|---|
| 445 | * - All remaining characters (including all printable
|
|---|
| 446 | * ISO 8859-1 and WGL4 characters, Unicode control characters,
|
|---|
| 447 | * etc.) have a column width of 1.
|
|---|
| 448 | *
|
|---|
| 449 | * This implementation assumes that wchar_t characters are encoded
|
|---|
| 450 | * in ISO 10646.
|
|---|
| 451 | */
|
|---|
| 452 | int FAST_FUNC wcwidth(unsigned ucs)
|
|---|
| 453 | {
|
|---|
| 454 | # if CONFIG_LAST_SUPPORTED_WCHAR >= 0x300
|
|---|
| 455 | /* sorted list of non-overlapping intervals of non-spacing characters */
|
|---|
| 456 | /* generated by "uniset +cat=Me +cat=Mn +cat=Cf -00AD +1160-11FF +200B c" */
|
|---|
| 457 | # define BIG_(a,b) { a, b },
|
|---|
| 458 | # define PAIR(a,b)
|
|---|
| 459 | # define ARRAY /* PAIR if < 0x4000 and no more than 4 chars big */ \
|
|---|
| 460 | BIG_(0x0300, 0x036F) \
|
|---|
| 461 | PAIR(0x0483, 0x0486) \
|
|---|
| 462 | PAIR(0x0488, 0x0489) \
|
|---|
| 463 | BIG_(0x0591, 0x05BD) \
|
|---|
| 464 | PAIR(0x05BF, 0x05BF) \
|
|---|
| 465 | PAIR(0x05C1, 0x05C2) \
|
|---|
| 466 | PAIR(0x05C4, 0x05C5) \
|
|---|
| 467 | PAIR(0x05C7, 0x05C7) \
|
|---|
| 468 | PAIR(0x0600, 0x0603) \
|
|---|
| 469 | BIG_(0x0610, 0x0615) \
|
|---|
| 470 | BIG_(0x064B, 0x065E) \
|
|---|
| 471 | PAIR(0x0670, 0x0670) \
|
|---|
| 472 | BIG_(0x06D6, 0x06E4) \
|
|---|
| 473 | PAIR(0x06E7, 0x06E8) \
|
|---|
| 474 | PAIR(0x06EA, 0x06ED) \
|
|---|
| 475 | PAIR(0x070F, 0x070F) \
|
|---|
| 476 | PAIR(0x0711, 0x0711) \
|
|---|
| 477 | BIG_(0x0730, 0x074A) \
|
|---|
| 478 | BIG_(0x07A6, 0x07B0) \
|
|---|
| 479 | BIG_(0x07EB, 0x07F3) \
|
|---|
| 480 | PAIR(0x0901, 0x0902) \
|
|---|
| 481 | PAIR(0x093C, 0x093C) \
|
|---|
| 482 | BIG_(0x0941, 0x0948) \
|
|---|
| 483 | PAIR(0x094D, 0x094D) \
|
|---|
| 484 | PAIR(0x0951, 0x0954) \
|
|---|
| 485 | PAIR(0x0962, 0x0963) \
|
|---|
| 486 | PAIR(0x0981, 0x0981) \
|
|---|
| 487 | PAIR(0x09BC, 0x09BC) \
|
|---|
| 488 | PAIR(0x09C1, 0x09C4) \
|
|---|
| 489 | PAIR(0x09CD, 0x09CD) \
|
|---|
| 490 | PAIR(0x09E2, 0x09E3) \
|
|---|
| 491 | PAIR(0x0A01, 0x0A02) \
|
|---|
| 492 | PAIR(0x0A3C, 0x0A3C) \
|
|---|
| 493 | PAIR(0x0A41, 0x0A42) \
|
|---|
| 494 | PAIR(0x0A47, 0x0A48) \
|
|---|
| 495 | PAIR(0x0A4B, 0x0A4D) \
|
|---|
| 496 | PAIR(0x0A70, 0x0A71) \
|
|---|
| 497 | PAIR(0x0A81, 0x0A82) \
|
|---|
| 498 | PAIR(0x0ABC, 0x0ABC) \
|
|---|
| 499 | BIG_(0x0AC1, 0x0AC5) \
|
|---|
| 500 | PAIR(0x0AC7, 0x0AC8) \
|
|---|
| 501 | PAIR(0x0ACD, 0x0ACD) \
|
|---|
| 502 | PAIR(0x0AE2, 0x0AE3) \
|
|---|
| 503 | PAIR(0x0B01, 0x0B01) \
|
|---|
| 504 | PAIR(0x0B3C, 0x0B3C) \
|
|---|
| 505 | PAIR(0x0B3F, 0x0B3F) \
|
|---|
| 506 | PAIR(0x0B41, 0x0B43) \
|
|---|
| 507 | PAIR(0x0B4D, 0x0B4D) \
|
|---|
| 508 | PAIR(0x0B56, 0x0B56) \
|
|---|
| 509 | PAIR(0x0B82, 0x0B82) \
|
|---|
| 510 | PAIR(0x0BC0, 0x0BC0) \
|
|---|
| 511 | PAIR(0x0BCD, 0x0BCD) \
|
|---|
| 512 | PAIR(0x0C3E, 0x0C40) \
|
|---|
| 513 | PAIR(0x0C46, 0x0C48) \
|
|---|
| 514 | PAIR(0x0C4A, 0x0C4D) \
|
|---|
| 515 | PAIR(0x0C55, 0x0C56) \
|
|---|
| 516 | PAIR(0x0CBC, 0x0CBC) \
|
|---|
| 517 | PAIR(0x0CBF, 0x0CBF) \
|
|---|
| 518 | PAIR(0x0CC6, 0x0CC6) \
|
|---|
| 519 | PAIR(0x0CCC, 0x0CCD) \
|
|---|
| 520 | PAIR(0x0CE2, 0x0CE3) \
|
|---|
| 521 | PAIR(0x0D41, 0x0D43) \
|
|---|
| 522 | PAIR(0x0D4D, 0x0D4D) \
|
|---|
| 523 | PAIR(0x0DCA, 0x0DCA) \
|
|---|
| 524 | PAIR(0x0DD2, 0x0DD4) \
|
|---|
| 525 | PAIR(0x0DD6, 0x0DD6) \
|
|---|
| 526 | PAIR(0x0E31, 0x0E31) \
|
|---|
| 527 | BIG_(0x0E34, 0x0E3A) \
|
|---|
| 528 | BIG_(0x0E47, 0x0E4E) \
|
|---|
| 529 | PAIR(0x0EB1, 0x0EB1) \
|
|---|
| 530 | BIG_(0x0EB4, 0x0EB9) \
|
|---|
| 531 | PAIR(0x0EBB, 0x0EBC) \
|
|---|
| 532 | BIG_(0x0EC8, 0x0ECD) \
|
|---|
| 533 | PAIR(0x0F18, 0x0F19) \
|
|---|
| 534 | PAIR(0x0F35, 0x0F35) \
|
|---|
| 535 | PAIR(0x0F37, 0x0F37) \
|
|---|
| 536 | PAIR(0x0F39, 0x0F39) \
|
|---|
| 537 | BIG_(0x0F71, 0x0F7E) \
|
|---|
| 538 | BIG_(0x0F80, 0x0F84) \
|
|---|
| 539 | PAIR(0x0F86, 0x0F87) \
|
|---|
| 540 | PAIR(0x0FC6, 0x0FC6) \
|
|---|
| 541 | BIG_(0x0F90, 0x0F97) \
|
|---|
| 542 | BIG_(0x0F99, 0x0FBC) \
|
|---|
| 543 | PAIR(0x102D, 0x1030) \
|
|---|
| 544 | PAIR(0x1032, 0x1032) \
|
|---|
| 545 | PAIR(0x1036, 0x1037) \
|
|---|
| 546 | PAIR(0x1039, 0x1039) \
|
|---|
| 547 | PAIR(0x1058, 0x1059) \
|
|---|
| 548 | BIG_(0x1160, 0x11FF) \
|
|---|
| 549 | PAIR(0x135F, 0x135F) \
|
|---|
| 550 | PAIR(0x1712, 0x1714) \
|
|---|
| 551 | PAIR(0x1732, 0x1734) \
|
|---|
| 552 | PAIR(0x1752, 0x1753) \
|
|---|
| 553 | PAIR(0x1772, 0x1773) \
|
|---|
| 554 | PAIR(0x17B4, 0x17B5) \
|
|---|
| 555 | BIG_(0x17B7, 0x17BD) \
|
|---|
| 556 | PAIR(0x17C6, 0x17C6) \
|
|---|
| 557 | BIG_(0x17C9, 0x17D3) \
|
|---|
| 558 | PAIR(0x17DD, 0x17DD) \
|
|---|
| 559 | PAIR(0x180B, 0x180D) \
|
|---|
| 560 | PAIR(0x18A9, 0x18A9) \
|
|---|
| 561 | PAIR(0x1920, 0x1922) \
|
|---|
| 562 | PAIR(0x1927, 0x1928) \
|
|---|
| 563 | PAIR(0x1932, 0x1932) \
|
|---|
| 564 | PAIR(0x1939, 0x193B) \
|
|---|
| 565 | PAIR(0x1A17, 0x1A18) \
|
|---|
| 566 | PAIR(0x1B00, 0x1B03) \
|
|---|
| 567 | PAIR(0x1B34, 0x1B34) \
|
|---|
| 568 | BIG_(0x1B36, 0x1B3A) \
|
|---|
| 569 | PAIR(0x1B3C, 0x1B3C) \
|
|---|
| 570 | PAIR(0x1B42, 0x1B42) \
|
|---|
| 571 | BIG_(0x1B6B, 0x1B73) \
|
|---|
| 572 | BIG_(0x1DC0, 0x1DCA) \
|
|---|
| 573 | PAIR(0x1DFE, 0x1DFF) \
|
|---|
| 574 | BIG_(0x200B, 0x200F) \
|
|---|
| 575 | BIG_(0x202A, 0x202E) \
|
|---|
| 576 | PAIR(0x2060, 0x2063) \
|
|---|
| 577 | BIG_(0x206A, 0x206F) \
|
|---|
| 578 | BIG_(0x20D0, 0x20EF) \
|
|---|
| 579 | BIG_(0x302A, 0x302F) \
|
|---|
| 580 | PAIR(0x3099, 0x309A) \
|
|---|
| 581 | /* Too big to be packed in PAIRs: */ \
|
|---|
| 582 | BIG_(0xA806, 0xA806) \
|
|---|
| 583 | BIG_(0xA80B, 0xA80B) \
|
|---|
| 584 | BIG_(0xA825, 0xA826) \
|
|---|
| 585 | BIG_(0xFB1E, 0xFB1E) \
|
|---|
| 586 | BIG_(0xFE00, 0xFE0F) \
|
|---|
| 587 | BIG_(0xFE20, 0xFE23) \
|
|---|
| 588 | BIG_(0xFEFF, 0xFEFF) \
|
|---|
| 589 | BIG_(0xFFF9, 0xFFFB)
|
|---|
| 590 | static const struct interval combining[] = { ARRAY };
|
|---|
| 591 | # undef BIG_
|
|---|
| 592 | # undef PAIR
|
|---|
| 593 | # define BIG_(a,b)
|
|---|
| 594 | # define PAIR(a,b) (a << 2) | (b-a),
|
|---|
| 595 | static const uint16_t combining1[] = { ARRAY };
|
|---|
| 596 | # undef BIG_
|
|---|
| 597 | # undef PAIR
|
|---|
| 598 | # define BIG_(a,b) char big_##a[b < 0x4000 && b-a <= 3 ? -1 : 1];
|
|---|
| 599 | # define PAIR(a,b) char pair##a[b >= 0x4000 || b-a > 3 ? -1 : 1];
|
|---|
| 600 | struct CHECK { ARRAY };
|
|---|
| 601 | # undef BIG_
|
|---|
| 602 | # undef PAIR
|
|---|
| 603 | # undef ARRAY
|
|---|
| 604 | # endif
|
|---|
| 605 |
|
|---|
| 606 | if (ucs == 0)
|
|---|
| 607 | return 0;
|
|---|
| 608 |
|
|---|
| 609 | /* Test for 8-bit control characters (00-1f, 80-9f, 7f) */
|
|---|
| 610 | if ((ucs & ~0x80) < 0x20 || ucs == 0x7f)
|
|---|
| 611 | return -1;
|
|---|
| 612 | /* Quick abort if it is an obviously invalid char */
|
|---|
| 613 | if (ucs > CONFIG_LAST_SUPPORTED_WCHAR)
|
|---|
| 614 | return -1;
|
|---|
| 615 |
|
|---|
| 616 | /* Optimization: no combining chars below 0x300 */
|
|---|
| 617 | if (CONFIG_LAST_SUPPORTED_WCHAR < 0x300 || ucs < 0x300)
|
|---|
| 618 | return 1;
|
|---|
| 619 |
|
|---|
| 620 | # if CONFIG_LAST_SUPPORTED_WCHAR >= 0x300
|
|---|
| 621 | /* Binary search in table of non-spacing characters */
|
|---|
| 622 | if (in_interval_table(ucs, combining, ARRAY_SIZE(combining) - 1))
|
|---|
| 623 | return 0;
|
|---|
| 624 | if (in_uint16_table(ucs, combining1, ARRAY_SIZE(combining1) - 1))
|
|---|
| 625 | return 0;
|
|---|
| 626 |
|
|---|
| 627 | /* Optimization: all chars below 0x1100 are not double-width */
|
|---|
| 628 | if (CONFIG_LAST_SUPPORTED_WCHAR < 0x1100 || ucs < 0x1100)
|
|---|
| 629 | return 1;
|
|---|
| 630 |
|
|---|
| 631 | # if CONFIG_LAST_SUPPORTED_WCHAR >= 0x1100
|
|---|
| 632 | /* Invalid code points: */
|
|---|
| 633 | /* High (d800..dbff) and low (dc00..dfff) surrogates (valid only in UTF16) */
|
|---|
| 634 | /* Private Use Area (e000..f8ff) */
|
|---|
| 635 | /* Noncharacters fdd0..fdef */
|
|---|
| 636 | if ((CONFIG_LAST_SUPPORTED_WCHAR >= 0xd800 && ucs >= 0xd800 && ucs <= 0xf8ff)
|
|---|
| 637 | || (CONFIG_LAST_SUPPORTED_WCHAR >= 0xfdd0 && ucs >= 0xfdd0 && ucs <= 0xfdef)
|
|---|
| 638 | ) {
|
|---|
| 639 | return -1;
|
|---|
| 640 | }
|
|---|
| 641 | /* 0xfffe and 0xffff in every plane are invalid */
|
|---|
| 642 | if (CONFIG_LAST_SUPPORTED_WCHAR >= 0xfffe && ((ucs & 0xfffe) == 0xfffe)) {
|
|---|
| 643 | return -1;
|
|---|
| 644 | }
|
|---|
| 645 |
|
|---|
| 646 | # if CONFIG_LAST_SUPPORTED_WCHAR >= 0x10000
|
|---|
| 647 | if (ucs >= 0x10000) {
|
|---|
| 648 | /* Combining chars in Supplementary Multilingual Plane 0x1xxxx */
|
|---|
| 649 | static const struct interval combining0x10000[] = {
|
|---|
| 650 | { 0x0A01, 0x0A03 }, { 0x0A05, 0x0A06 }, { 0x0A0C, 0x0A0F },
|
|---|
| 651 | { 0x0A38, 0x0A3A }, { 0x0A3F, 0x0A3F }, { 0xD167, 0xD169 },
|
|---|
| 652 | { 0xD173, 0xD182 }, { 0xD185, 0xD18B }, { 0xD1AA, 0xD1AD },
|
|---|
| 653 | { 0xD242, 0xD244 }
|
|---|
| 654 | };
|
|---|
| 655 | /* Binary search in table of non-spacing characters in Supplementary Multilingual Plane */
|
|---|
| 656 | if (in_interval_table(ucs ^ 0x10000, combining0x10000, ARRAY_SIZE(combining0x10000) - 1))
|
|---|
| 657 | return 0;
|
|---|
| 658 | /* Check a few non-spacing chars in Supplementary Special-purpose Plane 0xExxxx */
|
|---|
| 659 | if (CONFIG_LAST_SUPPORTED_WCHAR >= 0xE0001
|
|---|
| 660 | && ( ucs == 0xE0001
|
|---|
| 661 | || (ucs >= 0xE0020 && ucs <= 0xE007F)
|
|---|
| 662 | || (ucs >= 0xE0100 && ucs <= 0xE01EF)
|
|---|
| 663 | )
|
|---|
| 664 | ) {
|
|---|
| 665 | return 0;
|
|---|
| 666 | }
|
|---|
| 667 | }
|
|---|
| 668 | # endif
|
|---|
| 669 |
|
|---|
| 670 | /* If we arrive here, ucs is not a combining or C0/C1 control character.
|
|---|
| 671 | * Check whether it's 1 char or 2-shar wide.
|
|---|
| 672 | */
|
|---|
| 673 | return 1 +
|
|---|
| 674 | ( (/*ucs >= 0x1100 &&*/ ucs <= 0x115f) /* Hangul Jamo init. consonants */
|
|---|
| 675 | || ucs == 0x2329 /* left-pointing angle bracket; also CJK punct. char */
|
|---|
| 676 | || ucs == 0x232a /* right-pointing angle bracket; also CJK punct. char */
|
|---|
| 677 | || (ucs >= 0x2e80 && ucs <= 0xa4cf && ucs != 0x303f) /* CJK ... Yi */
|
|---|
| 678 | # if CONFIG_LAST_SUPPORTED_WCHAR >= 0xac00
|
|---|
| 679 | || (ucs >= 0xac00 && ucs <= 0xd7a3) /* Hangul Syllables */
|
|---|
| 680 | || (ucs >= 0xf900 && ucs <= 0xfaff) /* CJK Compatibility Ideographs */
|
|---|
| 681 | || (ucs >= 0xfe10 && ucs <= 0xfe19) /* Vertical forms */
|
|---|
| 682 | || (ucs >= 0xfe30 && ucs <= 0xfe6f) /* CJK Compatibility Forms */
|
|---|
| 683 | || (ucs >= 0xff00 && ucs <= 0xff60) /* Fullwidth Forms */
|
|---|
| 684 | || (ucs >= 0xffe0 && ucs <= 0xffe6)
|
|---|
| 685 | || ((ucs >> 17) == (2 >> 1)) /* 20000..3ffff: Supplementary and Tertiary Ideographic Planes */
|
|---|
| 686 | # endif
|
|---|
| 687 | );
|
|---|
| 688 | # endif /* >= 0x1100 */
|
|---|
| 689 | # endif /* >= 0x300 */
|
|---|
| 690 | }
|
|---|
| 691 |
|
|---|
| 692 |
|
|---|
| 693 | # if ENABLE_UNICODE_BIDI_SUPPORT
|
|---|
| 694 | int FAST_FUNC unicode_bidi_isrtl(wint_t wc)
|
|---|
| 695 | {
|
|---|
| 696 | /* ranges taken from
|
|---|
| 697 | * http://www.unicode.org/Public/5.2.0/ucd/extracted/DerivedBidiClass.txt
|
|---|
| 698 | * Bidi_Class=Left_To_Right | Bidi_Class=Arabic_Letter
|
|---|
| 699 | */
|
|---|
| 700 | # define BIG_(a,b) { a, b },
|
|---|
| 701 | # define PAIR(a,b)
|
|---|
| 702 | # define ARRAY \
|
|---|
| 703 | PAIR(0x0590, 0x0590) \
|
|---|
| 704 | PAIR(0x05BE, 0x05BE) \
|
|---|
| 705 | PAIR(0x05C0, 0x05C0) \
|
|---|
| 706 | PAIR(0x05C3, 0x05C3) \
|
|---|
| 707 | PAIR(0x05C6, 0x05C6) \
|
|---|
| 708 | BIG_(0x05C8, 0x05FF) \
|
|---|
| 709 | PAIR(0x0604, 0x0605) \
|
|---|
| 710 | PAIR(0x0608, 0x0608) \
|
|---|
| 711 | PAIR(0x060B, 0x060B) \
|
|---|
| 712 | PAIR(0x060D, 0x060D) \
|
|---|
| 713 | BIG_(0x061B, 0x064A) \
|
|---|
| 714 | PAIR(0x065F, 0x065F) \
|
|---|
| 715 | PAIR(0x066D, 0x066F) \
|
|---|
| 716 | BIG_(0x0671, 0x06D5) \
|
|---|
| 717 | PAIR(0x06E5, 0x06E6) \
|
|---|
| 718 | PAIR(0x06EE, 0x06EF) \
|
|---|
| 719 | BIG_(0x06FA, 0x070E) \
|
|---|
| 720 | PAIR(0x0710, 0x0710) \
|
|---|
| 721 | BIG_(0x0712, 0x072F) \
|
|---|
| 722 | BIG_(0x074B, 0x07A5) \
|
|---|
| 723 | BIG_(0x07B1, 0x07EA) \
|
|---|
| 724 | PAIR(0x07F4, 0x07F5) \
|
|---|
| 725 | BIG_(0x07FA, 0x0815) \
|
|---|
| 726 | PAIR(0x081A, 0x081A) \
|
|---|
| 727 | PAIR(0x0824, 0x0824) \
|
|---|
| 728 | PAIR(0x0828, 0x0828) \
|
|---|
| 729 | BIG_(0x082E, 0x08FF) \
|
|---|
| 730 | PAIR(0x200F, 0x200F) \
|
|---|
| 731 | PAIR(0x202B, 0x202B) \
|
|---|
| 732 | PAIR(0x202E, 0x202E) \
|
|---|
| 733 | BIG_(0xFB1D, 0xFB1D) \
|
|---|
| 734 | BIG_(0xFB1F, 0xFB28) \
|
|---|
| 735 | BIG_(0xFB2A, 0xFD3D) \
|
|---|
| 736 | BIG_(0xFD40, 0xFDCF) \
|
|---|
| 737 | BIG_(0xFDC8, 0xFDCF) \
|
|---|
| 738 | BIG_(0xFDF0, 0xFDFC) \
|
|---|
| 739 | BIG_(0xFDFE, 0xFDFF) \
|
|---|
| 740 | BIG_(0xFE70, 0xFEFE)
|
|---|
| 741 | /* Probably not necessary
|
|---|
| 742 | {0x10800, 0x1091E},
|
|---|
| 743 | {0x10920, 0x10A00},
|
|---|
| 744 | {0x10A04, 0x10A04},
|
|---|
| 745 | {0x10A07, 0x10A0B},
|
|---|
| 746 | {0x10A10, 0x10A37},
|
|---|
| 747 | {0x10A3B, 0x10A3E},
|
|---|
| 748 | {0x10A40, 0x10A7F},
|
|---|
| 749 | {0x10B36, 0x10B38},
|
|---|
| 750 | {0x10B40, 0x10E5F},
|
|---|
| 751 | {0x10E7F, 0x10FFF},
|
|---|
| 752 | {0x1E800, 0x1EFFF}
|
|---|
| 753 | */
|
|---|
| 754 | static const struct interval rtl_b[] = { ARRAY };
|
|---|
| 755 | # undef BIG_
|
|---|
| 756 | # undef PAIR
|
|---|
| 757 | # define BIG_(a,b)
|
|---|
| 758 | # define PAIR(a,b) (a << 2) | (b-a),
|
|---|
| 759 | static const uint16_t rtl_p[] = { ARRAY };
|
|---|
| 760 | # undef BIG_
|
|---|
| 761 | # undef PAIR
|
|---|
| 762 | # define BIG_(a,b) char big_##a[b < 0x4000 && b-a <= 3 ? -1 : 1];
|
|---|
| 763 | # define PAIR(a,b) char pair##a[b >= 0x4000 || b-a > 3 ? -1 : 1];
|
|---|
| 764 | struct CHECK { ARRAY };
|
|---|
| 765 | # undef BIG_
|
|---|
| 766 | # undef PAIR
|
|---|
| 767 | # undef ARRAY
|
|---|
| 768 |
|
|---|
| 769 | if (in_interval_table(wc, rtl_b, ARRAY_SIZE(rtl_b) - 1))
|
|---|
| 770 | return 1;
|
|---|
| 771 | if (in_uint16_table(wc, rtl_p, ARRAY_SIZE(rtl_p) - 1))
|
|---|
| 772 | return 1;
|
|---|
| 773 | return 0;
|
|---|
| 774 | }
|
|---|
| 775 |
|
|---|
| 776 | # if ENABLE_UNICODE_NEUTRAL_TABLE
|
|---|
| 777 | int FAST_FUNC unicode_bidi_is_neutral_wchar(wint_t wc)
|
|---|
| 778 | {
|
|---|
| 779 | /* ranges taken from
|
|---|
| 780 | * http://www.unicode.org/Public/5.2.0/ucd/extracted/DerivedBidiClass.txt
|
|---|
| 781 | * Bidi_Classes: Paragraph_Separator, Segment_Separator,
|
|---|
| 782 | * White_Space, Other_Neutral, European_Number, European_Separator,
|
|---|
| 783 | * European_Terminator, Arabic_Number, Common_Separator
|
|---|
| 784 | */
|
|---|
| 785 | # define BIG_(a,b) { a, b },
|
|---|
| 786 | # define PAIR(a,b)
|
|---|
| 787 | # define ARRAY \
|
|---|
| 788 | BIG_(0x0009, 0x000D) \
|
|---|
| 789 | BIG_(0x001C, 0x0040) \
|
|---|
| 790 | BIG_(0x005B, 0x0060) \
|
|---|
| 791 | PAIR(0x007B, 0x007E) \
|
|---|
| 792 | PAIR(0x0085, 0x0085) \
|
|---|
| 793 | BIG_(0x00A0, 0x00A9) \
|
|---|
| 794 | PAIR(0x00AB, 0x00AC) \
|
|---|
| 795 | BIG_(0x00AE, 0x00B4) \
|
|---|
| 796 | PAIR(0x00B6, 0x00B9) \
|
|---|
| 797 | BIG_(0x00BB, 0x00BF) \
|
|---|
| 798 | PAIR(0x00D7, 0x00D7) \
|
|---|
| 799 | PAIR(0x00F7, 0x00F7) \
|
|---|
| 800 | PAIR(0x02B9, 0x02BA) \
|
|---|
| 801 | BIG_(0x02C2, 0x02CF) \
|
|---|
| 802 | BIG_(0x02D2, 0x02DF) \
|
|---|
| 803 | BIG_(0x02E5, 0x02FF) \
|
|---|
| 804 | PAIR(0x0374, 0x0375) \
|
|---|
| 805 | PAIR(0x037E, 0x037E) \
|
|---|
| 806 | PAIR(0x0384, 0x0385) \
|
|---|
| 807 | PAIR(0x0387, 0x0387) \
|
|---|
| 808 | PAIR(0x03F6, 0x03F6) \
|
|---|
| 809 | PAIR(0x058A, 0x058A) \
|
|---|
| 810 | PAIR(0x0600, 0x0603) \
|
|---|
| 811 | PAIR(0x0606, 0x0607) \
|
|---|
| 812 | PAIR(0x0609, 0x060A) \
|
|---|
| 813 | PAIR(0x060C, 0x060C) \
|
|---|
| 814 | PAIR(0x060E, 0x060F) \
|
|---|
| 815 | BIG_(0x0660, 0x066C) \
|
|---|
| 816 | PAIR(0x06DD, 0x06DD) \
|
|---|
| 817 | PAIR(0x06E9, 0x06E9) \
|
|---|
| 818 | BIG_(0x06F0, 0x06F9) \
|
|---|
| 819 | PAIR(0x07F6, 0x07F9) \
|
|---|
| 820 | PAIR(0x09F2, 0x09F3) \
|
|---|
| 821 | PAIR(0x09FB, 0x09FB) \
|
|---|
| 822 | PAIR(0x0AF1, 0x0AF1) \
|
|---|
| 823 | BIG_(0x0BF3, 0x0BFA) \
|
|---|
| 824 | BIG_(0x0C78, 0x0C7E) \
|
|---|
| 825 | PAIR(0x0CF1, 0x0CF2) \
|
|---|
| 826 | PAIR(0x0E3F, 0x0E3F) \
|
|---|
| 827 | PAIR(0x0F3A, 0x0F3D) \
|
|---|
| 828 | BIG_(0x1390, 0x1400) \
|
|---|
| 829 | PAIR(0x1680, 0x1680) \
|
|---|
| 830 | PAIR(0x169B, 0x169C) \
|
|---|
| 831 | PAIR(0x17DB, 0x17DB) \
|
|---|
| 832 | BIG_(0x17F0, 0x17F9) \
|
|---|
| 833 | BIG_(0x1800, 0x180A) \
|
|---|
| 834 | PAIR(0x180E, 0x180E) \
|
|---|
| 835 | PAIR(0x1940, 0x1940) \
|
|---|
| 836 | PAIR(0x1944, 0x1945) \
|
|---|
| 837 | BIG_(0x19DE, 0x19FF) \
|
|---|
| 838 | PAIR(0x1FBD, 0x1FBD) \
|
|---|
| 839 | PAIR(0x1FBF, 0x1FC1) \
|
|---|
| 840 | PAIR(0x1FCD, 0x1FCF) \
|
|---|
| 841 | PAIR(0x1FDD, 0x1FDF) \
|
|---|
| 842 | PAIR(0x1FED, 0x1FEF) \
|
|---|
| 843 | PAIR(0x1FFD, 0x1FFE) \
|
|---|
| 844 | BIG_(0x2000, 0x200A) \
|
|---|
| 845 | BIG_(0x2010, 0x2029) \
|
|---|
| 846 | BIG_(0x202F, 0x205F) \
|
|---|
| 847 | PAIR(0x2070, 0x2070) \
|
|---|
| 848 | BIG_(0x2074, 0x207E) \
|
|---|
| 849 | BIG_(0x2080, 0x208E) \
|
|---|
| 850 | BIG_(0x20A0, 0x20B8) \
|
|---|
| 851 | PAIR(0x2100, 0x2101) \
|
|---|
| 852 | PAIR(0x2103, 0x2106) \
|
|---|
| 853 | PAIR(0x2108, 0x2109) \
|
|---|
| 854 | PAIR(0x2114, 0x2114) \
|
|---|
| 855 | PAIR(0x2116, 0x2118) \
|
|---|
| 856 | BIG_(0x211E, 0x2123) \
|
|---|
| 857 | PAIR(0x2125, 0x2125) \
|
|---|
| 858 | PAIR(0x2127, 0x2127) \
|
|---|
| 859 | PAIR(0x2129, 0x2129) \
|
|---|
| 860 | PAIR(0x212E, 0x212E) \
|
|---|
| 861 | PAIR(0x213A, 0x213B) \
|
|---|
| 862 | BIG_(0x2140, 0x2144) \
|
|---|
| 863 | PAIR(0x214A, 0x214D) \
|
|---|
| 864 | BIG_(0x2150, 0x215F) \
|
|---|
| 865 | PAIR(0x2189, 0x2189) \
|
|---|
| 866 | BIG_(0x2190, 0x2335) \
|
|---|
| 867 | BIG_(0x237B, 0x2394) \
|
|---|
| 868 | BIG_(0x2396, 0x23E8) \
|
|---|
| 869 | BIG_(0x2400, 0x2426) \
|
|---|
| 870 | BIG_(0x2440, 0x244A) \
|
|---|
| 871 | BIG_(0x2460, 0x249B) \
|
|---|
| 872 | BIG_(0x24EA, 0x26AB) \
|
|---|
| 873 | BIG_(0x26AD, 0x26CD) \
|
|---|
| 874 | BIG_(0x26CF, 0x26E1) \
|
|---|
| 875 | PAIR(0x26E3, 0x26E3) \
|
|---|
| 876 | BIG_(0x26E8, 0x26FF) \
|
|---|
| 877 | PAIR(0x2701, 0x2704) \
|
|---|
| 878 | PAIR(0x2706, 0x2709) \
|
|---|
| 879 | BIG_(0x270C, 0x2727) \
|
|---|
| 880 | BIG_(0x2729, 0x274B) \
|
|---|
| 881 | PAIR(0x274D, 0x274D) \
|
|---|
| 882 | PAIR(0x274F, 0x2752) \
|
|---|
| 883 | BIG_(0x2756, 0x275E) \
|
|---|
| 884 | BIG_(0x2761, 0x2794) \
|
|---|
| 885 | BIG_(0x2798, 0x27AF) \
|
|---|
| 886 | BIG_(0x27B1, 0x27BE) \
|
|---|
| 887 | BIG_(0x27C0, 0x27CA) \
|
|---|
| 888 | PAIR(0x27CC, 0x27CC) \
|
|---|
| 889 | BIG_(0x27D0, 0x27FF) \
|
|---|
| 890 | BIG_(0x2900, 0x2B4C) \
|
|---|
| 891 | BIG_(0x2B50, 0x2B59) \
|
|---|
| 892 | BIG_(0x2CE5, 0x2CEA) \
|
|---|
| 893 | BIG_(0x2CF9, 0x2CFF) \
|
|---|
| 894 | BIG_(0x2E00, 0x2E99) \
|
|---|
| 895 | BIG_(0x2E9B, 0x2EF3) \
|
|---|
| 896 | BIG_(0x2F00, 0x2FD5) \
|
|---|
| 897 | BIG_(0x2FF0, 0x2FFB) \
|
|---|
| 898 | BIG_(0x3000, 0x3004) \
|
|---|
| 899 | BIG_(0x3008, 0x3020) \
|
|---|
| 900 | PAIR(0x3030, 0x3030) \
|
|---|
| 901 | PAIR(0x3036, 0x3037) \
|
|---|
| 902 | PAIR(0x303D, 0x303D) \
|
|---|
| 903 | PAIR(0x303E, 0x303F) \
|
|---|
| 904 | PAIR(0x309B, 0x309C) \
|
|---|
| 905 | PAIR(0x30A0, 0x30A0) \
|
|---|
| 906 | PAIR(0x30FB, 0x30FB) \
|
|---|
| 907 | BIG_(0x31C0, 0x31E3) \
|
|---|
| 908 | PAIR(0x321D, 0x321E) \
|
|---|
| 909 | BIG_(0x3250, 0x325F) \
|
|---|
| 910 | PAIR(0x327C, 0x327E) \
|
|---|
| 911 | BIG_(0x32B1, 0x32BF) \
|
|---|
| 912 | PAIR(0x32CC, 0x32CF) \
|
|---|
| 913 | PAIR(0x3377, 0x337A) \
|
|---|
| 914 | PAIR(0x33DE, 0x33DF) \
|
|---|
| 915 | PAIR(0x33FF, 0x33FF) \
|
|---|
| 916 | BIG_(0x4DC0, 0x4DFF) \
|
|---|
| 917 | BIG_(0xA490, 0xA4C6) \
|
|---|
| 918 | BIG_(0xA60D, 0xA60F) \
|
|---|
| 919 | BIG_(0xA673, 0xA673) \
|
|---|
| 920 | BIG_(0xA67E, 0xA67F) \
|
|---|
| 921 | BIG_(0xA700, 0xA721) \
|
|---|
| 922 | BIG_(0xA788, 0xA788) \
|
|---|
| 923 | BIG_(0xA828, 0xA82B) \
|
|---|
| 924 | BIG_(0xA838, 0xA839) \
|
|---|
| 925 | BIG_(0xA874, 0xA877) \
|
|---|
| 926 | BIG_(0xFB29, 0xFB29) \
|
|---|
| 927 | BIG_(0xFD3E, 0xFD3F) \
|
|---|
| 928 | BIG_(0xFDFD, 0xFDFD) \
|
|---|
| 929 | BIG_(0xFE10, 0xFE19) \
|
|---|
| 930 | BIG_(0xFE30, 0xFE52) \
|
|---|
| 931 | BIG_(0xFE54, 0xFE66) \
|
|---|
| 932 | BIG_(0xFE68, 0xFE6B) \
|
|---|
| 933 | BIG_(0xFF01, 0xFF20) \
|
|---|
| 934 | BIG_(0xFF3B, 0xFF40) \
|
|---|
| 935 | BIG_(0xFF5B, 0xFF65) \
|
|---|
| 936 | BIG_(0xFFE0, 0xFFE6) \
|
|---|
| 937 | BIG_(0xFFE8, 0xFFEE) \
|
|---|
| 938 | BIG_(0xFFF9, 0xFFFD)
|
|---|
| 939 | /*
|
|---|
| 940 | {0x10101, 0x10101},
|
|---|
| 941 | {0x10140, 0x1019B},
|
|---|
| 942 | {0x1091F, 0x1091F},
|
|---|
| 943 | {0x10B39, 0x10B3F},
|
|---|
| 944 | {0x10E60, 0x10E7E},
|
|---|
| 945 | {0x1D200, 0x1D241},
|
|---|
| 946 | {0x1D245, 0x1D245},
|
|---|
| 947 | {0x1D300, 0x1D356},
|
|---|
| 948 | {0x1D6DB, 0x1D6DB},
|
|---|
| 949 | {0x1D715, 0x1D715},
|
|---|
| 950 | {0x1D74F, 0x1D74F},
|
|---|
| 951 | {0x1D789, 0x1D789},
|
|---|
| 952 | {0x1D7C3, 0x1D7C3},
|
|---|
| 953 | {0x1D7CE, 0x1D7FF},
|
|---|
| 954 | {0x1F000, 0x1F02B},
|
|---|
| 955 | {0x1F030, 0x1F093},
|
|---|
| 956 | {0x1F100, 0x1F10A}
|
|---|
| 957 | */
|
|---|
| 958 | static const struct interval neutral_b[] = { ARRAY };
|
|---|
| 959 | # undef BIG_
|
|---|
| 960 | # undef PAIR
|
|---|
| 961 | # define BIG_(a,b)
|
|---|
| 962 | # define PAIR(a,b) (a << 2) | (b-a),
|
|---|
| 963 | static const uint16_t neutral_p[] = { ARRAY };
|
|---|
| 964 | # undef BIG_
|
|---|
| 965 | # undef PAIR
|
|---|
| 966 | # define BIG_(a,b) char big_##a[b < 0x4000 && b-a <= 3 ? -1 : 1];
|
|---|
| 967 | # define PAIR(a,b) char pair##a[b >= 0x4000 || b-a > 3 ? -1 : 1];
|
|---|
| 968 | struct CHECK { ARRAY };
|
|---|
| 969 | # undef BIG_
|
|---|
| 970 | # undef PAIR
|
|---|
| 971 | # undef ARRAY
|
|---|
| 972 |
|
|---|
| 973 | if (in_interval_table(wc, neutral_b, ARRAY_SIZE(neutral_b) - 1))
|
|---|
| 974 | return 1;
|
|---|
| 975 | if (in_uint16_table(wc, neutral_p, ARRAY_SIZE(neutral_p) - 1))
|
|---|
| 976 | return 1;
|
|---|
| 977 | return 0;
|
|---|
| 978 | }
|
|---|
| 979 | # endif
|
|---|
| 980 |
|
|---|
| 981 | # endif /* UNICODE_BIDI_SUPPORT */
|
|---|
| 982 |
|
|---|
| 983 | #endif /* Homegrown Unicode support */
|
|---|
| 984 |
|
|---|
| 985 |
|
|---|
| 986 | /* The rest is mostly same for libc and for "homegrown" support */
|
|---|
| 987 |
|
|---|
| 988 | size_t FAST_FUNC unicode_strlen(const char *string)
|
|---|
| 989 | {
|
|---|
| 990 | size_t width = mbstowcs(NULL, string, INT_MAX);
|
|---|
| 991 | if (width == (size_t)-1L)
|
|---|
| 992 | return strlen(string);
|
|---|
| 993 | return width;
|
|---|
| 994 | }
|
|---|
| 995 |
|
|---|
| 996 | size_t FAST_FUNC unicode_strwidth(const char *string)
|
|---|
| 997 | {
|
|---|
| 998 | uni_stat_t uni_stat;
|
|---|
| 999 | printable_string(&uni_stat, string);
|
|---|
| 1000 | return uni_stat.unicode_width;
|
|---|
| 1001 | }
|
|---|
| 1002 |
|
|---|
| 1003 | static char* FAST_FUNC unicode_conv_to_printable2(uni_stat_t *stats, const char *src, unsigned width, int flags)
|
|---|
| 1004 | {
|
|---|
| 1005 | char *dst;
|
|---|
| 1006 | unsigned dst_len;
|
|---|
| 1007 | unsigned uni_count;
|
|---|
| 1008 | unsigned uni_width;
|
|---|
| 1009 |
|
|---|
| 1010 | if (unicode_status != UNICODE_ON) {
|
|---|
| 1011 | char *d;
|
|---|
| 1012 | if (flags & UNI_FLAG_PAD) {
|
|---|
| 1013 | d = dst = xmalloc(width + 1);
|
|---|
| 1014 | while ((int)--width >= 0) {
|
|---|
| 1015 | unsigned char c = *src;
|
|---|
| 1016 | if (c == '\0') {
|
|---|
| 1017 | do
|
|---|
| 1018 | *d++ = ' ';
|
|---|
| 1019 | while ((int)--width >= 0);
|
|---|
| 1020 | break;
|
|---|
| 1021 | }
|
|---|
| 1022 | *d++ = (c >= ' ' && c < 0x7f) ? c : '?';
|
|---|
| 1023 | src++;
|
|---|
| 1024 | }
|
|---|
| 1025 | *d = '\0';
|
|---|
| 1026 | } else {
|
|---|
| 1027 | d = dst = xstrndup(src, width);
|
|---|
| 1028 | while (*d) {
|
|---|
| 1029 | unsigned char c = *d;
|
|---|
| 1030 | if (c < ' ' || c >= 0x7f)
|
|---|
| 1031 | *d = '?';
|
|---|
| 1032 | d++;
|
|---|
| 1033 | }
|
|---|
| 1034 | }
|
|---|
| 1035 | if (stats) {
|
|---|
| 1036 | stats->byte_count = (d - dst);
|
|---|
| 1037 | stats->unicode_count = (d - dst);
|
|---|
| 1038 | stats->unicode_width = (d - dst);
|
|---|
| 1039 | }
|
|---|
| 1040 | return dst;
|
|---|
| 1041 | }
|
|---|
| 1042 |
|
|---|
| 1043 | dst = NULL;
|
|---|
| 1044 | uni_count = uni_width = 0;
|
|---|
| 1045 | dst_len = 0;
|
|---|
| 1046 | while (1) {
|
|---|
| 1047 | int w;
|
|---|
| 1048 | wchar_t wc;
|
|---|
| 1049 |
|
|---|
| 1050 | #if ENABLE_UNICODE_USING_LOCALE
|
|---|
| 1051 | {
|
|---|
| 1052 | mbstate_t mbst = { 0 };
|
|---|
| 1053 | ssize_t rc = mbsrtowcs(&wc, &src, 1, &mbst);
|
|---|
| 1054 | /* If invalid sequence is seen: -1 is returned,
|
|---|
| 1055 | * src points to the invalid sequence, errno = EILSEQ.
|
|---|
| 1056 | * Else number of wchars (excluding terminating L'\0')
|
|---|
| 1057 | * written to dest is returned.
|
|---|
| 1058 | * If len (here: 1) non-L'\0' wchars stored at dest,
|
|---|
| 1059 | * src points to the next char to be converted.
|
|---|
| 1060 | * If string is completely converted: src = NULL.
|
|---|
| 1061 | */
|
|---|
| 1062 | if (rc == 0) /* end-of-string */
|
|---|
| 1063 | break;
|
|---|
| 1064 | if (rc < 0) { /* error */
|
|---|
| 1065 | src++;
|
|---|
| 1066 | goto subst;
|
|---|
| 1067 | }
|
|---|
| 1068 | if (!iswprint(wc))
|
|---|
| 1069 | goto subst;
|
|---|
| 1070 | }
|
|---|
| 1071 | #else
|
|---|
| 1072 | src = mbstowc_internal(&wc, src);
|
|---|
| 1073 | /* src is advanced to next mb char
|
|---|
| 1074 | * wc == ERROR_WCHAR: invalid sequence is seen
|
|---|
| 1075 | * else: wc is set
|
|---|
| 1076 | */
|
|---|
| 1077 | if (wc == ERROR_WCHAR) /* error */
|
|---|
| 1078 | goto subst;
|
|---|
| 1079 | if (wc == 0) /* end-of-string */
|
|---|
| 1080 | break;
|
|---|
| 1081 | #endif
|
|---|
| 1082 | if (CONFIG_LAST_SUPPORTED_WCHAR && wc > CONFIG_LAST_SUPPORTED_WCHAR)
|
|---|
| 1083 | goto subst;
|
|---|
| 1084 | w = wcwidth(wc);
|
|---|
| 1085 | if ((ENABLE_UNICODE_COMBINING_WCHARS && w < 0) /* non-printable wchar */
|
|---|
| 1086 | || (!ENABLE_UNICODE_COMBINING_WCHARS && w <= 0)
|
|---|
| 1087 | || (!ENABLE_UNICODE_WIDE_WCHARS && w > 1)
|
|---|
| 1088 | ) {
|
|---|
| 1089 | subst:
|
|---|
| 1090 | wc = CONFIG_SUBST_WCHAR;
|
|---|
| 1091 | w = 1;
|
|---|
| 1092 | }
|
|---|
| 1093 | width -= w;
|
|---|
| 1094 | /* Note: if width == 0, we still may add more chars,
|
|---|
| 1095 | * they may be zero-width or combining ones */
|
|---|
| 1096 | if ((int)width < 0) {
|
|---|
| 1097 | /* can't add this wc, string would become longer than width */
|
|---|
| 1098 | width += w;
|
|---|
| 1099 | break;
|
|---|
| 1100 | }
|
|---|
| 1101 |
|
|---|
| 1102 | uni_count++;
|
|---|
| 1103 | uni_width += w;
|
|---|
| 1104 | dst = xrealloc(dst, dst_len + MB_CUR_MAX);
|
|---|
| 1105 | #if ENABLE_UNICODE_USING_LOCALE
|
|---|
| 1106 | {
|
|---|
| 1107 | mbstate_t mbst = { 0 };
|
|---|
| 1108 | dst_len += wcrtomb(&dst[dst_len], wc, &mbst);
|
|---|
| 1109 | }
|
|---|
| 1110 | #else
|
|---|
| 1111 | dst_len += wcrtomb_internal(&dst[dst_len], wc);
|
|---|
| 1112 | #endif
|
|---|
| 1113 | }
|
|---|
| 1114 |
|
|---|
| 1115 | /* Pad to remaining width */
|
|---|
| 1116 | if (flags & UNI_FLAG_PAD) {
|
|---|
| 1117 | dst = xrealloc(dst, dst_len + width + 1);
|
|---|
| 1118 | uni_count += width;
|
|---|
| 1119 | uni_width += width;
|
|---|
| 1120 | while ((int)--width >= 0) {
|
|---|
| 1121 | dst[dst_len++] = ' ';
|
|---|
| 1122 | }
|
|---|
| 1123 | }
|
|---|
| 1124 | dst[dst_len] = '\0';
|
|---|
| 1125 | if (stats) {
|
|---|
| 1126 | stats->byte_count = dst_len;
|
|---|
| 1127 | stats->unicode_count = uni_count;
|
|---|
| 1128 | stats->unicode_width = uni_width;
|
|---|
| 1129 | }
|
|---|
| 1130 |
|
|---|
| 1131 | return dst;
|
|---|
| 1132 | }
|
|---|
| 1133 | char* FAST_FUNC unicode_conv_to_printable(uni_stat_t *stats, const char *src)
|
|---|
| 1134 | {
|
|---|
| 1135 | return unicode_conv_to_printable2(stats, src, INT_MAX, 0);
|
|---|
| 1136 | }
|
|---|
| 1137 | char* FAST_FUNC unicode_conv_to_printable_fixedwidth(/*uni_stat_t *stats,*/ const char *src, unsigned width)
|
|---|
| 1138 | {
|
|---|
| 1139 | return unicode_conv_to_printable2(/*stats:*/ NULL, src, width, UNI_FLAG_PAD);
|
|---|
| 1140 | }
|
|---|
| 1141 |
|
|---|
| 1142 | #ifdef UNUSED
|
|---|
| 1143 | char* FAST_FUNC unicode_conv_to_printable_maxwidth(uni_stat_t *stats, const char *src, unsigned maxwidth)
|
|---|
| 1144 | {
|
|---|
| 1145 | return unicode_conv_to_printable2(stats, src, maxwidth, 0);
|
|---|
| 1146 | }
|
|---|
| 1147 |
|
|---|
| 1148 | unsigned FAST_FUNC unicode_padding_to_width(unsigned width, const char *src)
|
|---|
| 1149 | {
|
|---|
| 1150 | if (unicode_status != UNICODE_ON) {
|
|---|
| 1151 | return width - strnlen(src, width);
|
|---|
| 1152 | }
|
|---|
| 1153 |
|
|---|
| 1154 | while (1) {
|
|---|
| 1155 | int w;
|
|---|
| 1156 | wchar_t wc;
|
|---|
| 1157 |
|
|---|
| 1158 | #if ENABLE_UNICODE_USING_LOCALE
|
|---|
| 1159 | {
|
|---|
| 1160 | mbstate_t mbst = { 0 };
|
|---|
| 1161 | ssize_t rc = mbsrtowcs(&wc, &src, 1, &mbst);
|
|---|
| 1162 | if (rc <= 0) /* error, or end-of-string */
|
|---|
| 1163 | return width;
|
|---|
| 1164 | }
|
|---|
| 1165 | #else
|
|---|
| 1166 | src = mbstowc_internal(&wc, src);
|
|---|
| 1167 | if (wc == ERROR_WCHAR || wc == 0) /* error, or end-of-string */
|
|---|
| 1168 | return width;
|
|---|
| 1169 | #endif
|
|---|
| 1170 | w = wcwidth(wc);
|
|---|
| 1171 | if (w < 0) /* non-printable wchar */
|
|---|
| 1172 | return width;
|
|---|
| 1173 | width -= w;
|
|---|
| 1174 | if ((int)width <= 0) /* string is longer than width */
|
|---|
| 1175 | return 0;
|
|---|
| 1176 | }
|
|---|
| 1177 | }
|
|---|
| 1178 | #endif
|
|---|
