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/* Look at first character in UTF-8 string.
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Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2010 Free Software
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Written by Bruno Haible <bruno@clisp.org>, 2002.
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This program is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published
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by the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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u8_mblen (const uint8_t *s, size_t n)
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/* Keep in sync with unistr.h and utf8-ucs4.c. */
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return (c != 0 ? 1 : 0);
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#if CONFIG_UNICODE_SAFETY
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&& (s[1] ^ 0x80) < 0x40
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#if CONFIG_UNICODE_SAFETY
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&& (s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
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&& (c >= 0xe1 || s[1] >= 0xa0)
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&& (c != 0xed || s[1] < 0xa0)
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#if CONFIG_UNICODE_SAFETY
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&& (s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
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&& (s[3] ^ 0x80) < 0x40
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&& (c >= 0xf1 || s[1] >= 0x90)
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&& (c < 0xf4 || (c == 0xf4 && s[1] < 0x90))
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#if CONFIG_UNICODE_SAFETY
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&& (s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
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&& (s[3] ^ 0x80) < 0x40 && (s[4] ^ 0x80) < 0x40
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&& (c >= 0xf9 || s[1] >= 0x88)
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#if CONFIG_UNICODE_SAFETY
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&& (s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
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&& (s[3] ^ 0x80) < 0x40 && (s[4] ^ 0x80) < 0x40
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&& (s[5] ^ 0x80) < 0x40
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&& (c >= 0xfd || s[1] >= 0x84)
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/* invalid or incomplete multibyte character */