diff options
Diffstat (limited to 'lib/unistring/unistr/u8-check.c')
-rw-r--r-- | lib/unistring/unistr/u8-check.c | 87 |
1 files changed, 0 insertions, 87 deletions
diff --git a/lib/unistring/unistr/u8-check.c b/lib/unistring/unistr/u8-check.c deleted file mode 100644 index c62fa7d81e..0000000000 --- a/lib/unistring/unistr/u8-check.c +++ /dev/null @@ -1,87 +0,0 @@ -/* Check UTF-8 string. - Copyright (C) 2002, 2006-2007, 2009-2016 Free Software Foundation, Inc. - Written by Bruno Haible <bruno@clisp.org>, 2002. - - This program is free software: you can redistribute it and/or modify it - under the terms of either: - - * the GNU Lesser General Public License as published - by the Free Software Foundation; either version 3 of the License, or - (at your option) any later version. - - or - - * the GNU General Public License as published by the Free - Software Foundation; either version 2 of the License, or - (at your option) any later version. - - or both in parallel, as here. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with this program. If not, see <http://www.gnu.org/licenses/>. */ - -#include <config.h> - -/* Specification. */ -#include "unistr.h" - -const uint8_t * -u8_check (const uint8_t *s, size_t n) -{ - const uint8_t *s_end = s + n; - - while (s < s_end) - { - /* Keep in sync with unistr.h and u8-mbtouc-aux.c. */ - uint8_t c = *s; - - if (c < 0x80) - { - s++; - continue; - } - if (c >= 0xc2) - { - if (c < 0xe0) - { - if (s + 2 <= s_end - && (s[1] ^ 0x80) < 0x40) - { - s += 2; - continue; - } - } - else if (c < 0xf0) - { - if (s + 3 <= s_end - && (s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40 - && (c >= 0xe1 || s[1] >= 0xa0) - && (c != 0xed || s[1] < 0xa0)) - { - s += 3; - continue; - } - } - else if (c < 0xf8) - { - if (s + 4 <= s_end - && (s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40 - && (s[3] ^ 0x80) < 0x40 - && (c >= 0xf1 || s[1] >= 0x90) - && (c < 0xf4 || (c == 0xf4 && s[1] < 0x90))) - { - s += 4; - continue; - } - } - } - /* invalid or incomplete multibyte character */ - return s; - } - return NULL; -} |