X-Git-Url: https://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Funistr%2Fu8-mbtouc.c;h=2e644bbb9295b3299b099dcd07703014f8aff3c4;hb=5d706a3590ab4b393e845a1d73787faaae48d408;hp=7f61b675055347ae6bbaf46c43b2a7d6858b403e;hpb=1426f5a70d23f84b079e9ae052dc1de829f643e7;p=gnulib.git diff --git a/lib/unistr/u8-mbtouc.c b/lib/unistr/u8-mbtouc.c index 7f61b6750..2e644bbb9 100644 --- a/lib/unistr/u8-mbtouc.c +++ b/lib/unistr/u8-mbtouc.c @@ -1,24 +1,27 @@ /* Look at first character in UTF-8 string. - Copyright (C) 1999-2002, 2006-2007 Free Software Foundation, Inc. + Copyright (C) 1999-2002, 2006-2007, 2009-2013 Free Software Foundation, Inc. Written by Bruno Haible , 2001. - This program is free software; you can redistribute it and/or modify it - under the terms of the GNU Library General Public License as published - by the Free Software Foundation; either version 2, or (at your option) - any later version. + This program is free software: you can redistribute it and/or modify it + under the terms of 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. 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 - Library General Public License for more details. + Lesser General Public License for more details. - You should have received a copy of the GNU Library General Public - License along with this program; if not, write to the Free Software - Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, - USA. */ + You should have received a copy of the GNU Lesser General Public License + along with this program. If not, see . */ #include +#if defined IN_LIBUNISTRING +/* Tell unistr.h to declare u8_mbtouc as 'extern', not 'static inline'. */ +# include "unistring-notinline.h" +#endif + /* Specification. */ #include "unistr.h" @@ -37,134 +40,206 @@ u8_mbtouc (ucs4_t *puc, const uint8_t *s, size_t n) else if (c >= 0xc2) { if (c < 0xe0) - { - if (n >= 2) - { -#if CONFIG_UNICODE_SAFETY - if ((s[1] ^ 0x80) < 0x40) -#endif - { - *puc = ((unsigned int) (c & 0x1f) << 6) - | (unsigned int) (s[1] ^ 0x80); - return 2; - } - /* invalid multibyte character */ - } - else - { - /* incomplete multibyte character */ - *puc = 0xfffd; - return n; - } - } + { + if (n >= 2) + { + if ((s[1] ^ 0x80) < 0x40) + { + *puc = ((unsigned int) (c & 0x1f) << 6) + | (unsigned int) (s[1] ^ 0x80); + return 2; + } + /* invalid multibyte character */ + } + else + { + /* incomplete multibyte character */ + *puc = 0xfffd; + return 1; + } + } else if (c < 0xf0) - { - if (n >= 3) - { -#if CONFIG_UNICODE_SAFETY - if ((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40 - && (c >= 0xe1 || s[1] >= 0xa0) - && (c != 0xed || s[1] < 0xa0)) -#endif - { - *puc = ((unsigned int) (c & 0x0f) << 12) - | ((unsigned int) (s[1] ^ 0x80) << 6) - | (unsigned int) (s[2] ^ 0x80); - return 3; - } - /* invalid multibyte character */ - } - else - { - /* incomplete multibyte character */ - *puc = 0xfffd; - return n; - } - } + { + if (n >= 3) + { + if ((s[1] ^ 0x80) < 0x40) + { + if ((s[2] ^ 0x80) < 0x40) + { + if ((c >= 0xe1 || s[1] >= 0xa0) + && (c != 0xed || s[1] < 0xa0)) + { + *puc = ((unsigned int) (c & 0x0f) << 12) + | ((unsigned int) (s[1] ^ 0x80) << 6) + | (unsigned int) (s[2] ^ 0x80); + return 3; + } + /* invalid multibyte character */ + *puc = 0xfffd; + return 3; + } + /* invalid multibyte character */ + *puc = 0xfffd; + return 2; + } + /* invalid multibyte character */ + } + else + { + /* incomplete multibyte character */ + *puc = 0xfffd; + if (n == 1 || (s[1] ^ 0x80) >= 0x40) + return 1; + else + return 2; + } + } else if (c < 0xf8) - { - if (n >= 4) - { -#if CONFIG_UNICODE_SAFETY - if ((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40 - && (s[3] ^ 0x80) < 0x40 - && (c >= 0xf1 || s[1] >= 0x90) + { + if (n >= 4) + { + if ((s[1] ^ 0x80) < 0x40) + { + if ((s[2] ^ 0x80) < 0x40) + { + if ((s[3] ^ 0x80) < 0x40) + { + if ((c >= 0xf1 || s[1] >= 0x90) #if 1 - && (c < 0xf4 || (c == 0xf4 && s[1] < 0x90)) + && (c < 0xf4 || (c == 0xf4 && s[1] < 0x90)) #endif - ) -#endif - { - *puc = ((unsigned int) (c & 0x07) << 18) - | ((unsigned int) (s[1] ^ 0x80) << 12) - | ((unsigned int) (s[2] ^ 0x80) << 6) - | (unsigned int) (s[3] ^ 0x80); - return 4; - } - /* invalid multibyte character */ - } - else - { - /* incomplete multibyte character */ - *puc = 0xfffd; - return n; - } - } + ) + { + *puc = ((unsigned int) (c & 0x07) << 18) + | ((unsigned int) (s[1] ^ 0x80) << 12) + | ((unsigned int) (s[2] ^ 0x80) << 6) + | (unsigned int) (s[3] ^ 0x80); + return 4; + } + /* invalid multibyte character */ + *puc = 0xfffd; + return 4; + } + /* invalid multibyte character */ + *puc = 0xfffd; + return 3; + } + /* invalid multibyte character */ + *puc = 0xfffd; + return 2; + } + /* invalid multibyte character */ + } + else + { + /* incomplete multibyte character */ + *puc = 0xfffd; + if (n == 1 || (s[1] ^ 0x80) >= 0x40) + return 1; + else if (n == 2 || (s[2] ^ 0x80) >= 0x40) + return 2; + else + return 3; + } + } #if 0 else if (c < 0xfc) - { - if (n >= 5) - { -#if CONFIG_UNICODE_SAFETY - if ((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40 - && (s[3] ^ 0x80) < 0x40 && (s[4] ^ 0x80) < 0x40 - && (c >= 0xf9 || s[1] >= 0x88)) -#endif - { - *puc = ((unsigned int) (c & 0x03) << 24) - | ((unsigned int) (s[1] ^ 0x80) << 18) - | ((unsigned int) (s[2] ^ 0x80) << 12) - | ((unsigned int) (s[3] ^ 0x80) << 6) - | (unsigned int) (s[4] ^ 0x80); - return 5; - } - /* invalid multibyte character */ - } - else - { - /* incomplete multibyte character */ - *puc = 0xfffd; - return n; - } - } + { + if (n >= 5) + { + if ((s[1] ^ 0x80) < 0x40) + { + if ((s[2] ^ 0x80) < 0x40) + { + if ((s[3] ^ 0x80) < 0x40) + { + if ((s[4] ^ 0x80) < 0x40) + { + if (c >= 0xf9 || s[1] >= 0x88) + { + *puc = ((unsigned int) (c & 0x03) << 24) + | ((unsigned int) (s[1] ^ 0x80) << 18) + | ((unsigned int) (s[2] ^ 0x80) << 12) + | ((unsigned int) (s[3] ^ 0x80) << 6) + | (unsigned int) (s[4] ^ 0x80); + return 5; + } + /* invalid multibyte character */ + *puc = 0xfffd; + return 5; + } + /* invalid multibyte character */ + *puc = 0xfffd; + return 4; + } + /* invalid multibyte character */ + *puc = 0xfffd; + return 3; + } + /* invalid multibyte character */ + return 2; + } + /* invalid multibyte character */ + } + else + { + /* incomplete multibyte character */ + *puc = 0xfffd; + return n; + } + } else if (c < 0xfe) - { - if (n >= 6) - { -#if CONFIG_UNICODE_SAFETY - if ((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40 - && (s[3] ^ 0x80) < 0x40 && (s[4] ^ 0x80) < 0x40 - && (s[5] ^ 0x80) < 0x40 - && (c >= 0xfd || s[1] >= 0x84)) -#endif - { - *puc = ((unsigned int) (c & 0x01) << 30) - | ((unsigned int) (s[1] ^ 0x80) << 24) - | ((unsigned int) (s[2] ^ 0x80) << 18) - | ((unsigned int) (s[3] ^ 0x80) << 12) - | ((unsigned int) (s[4] ^ 0x80) << 6) - | (unsigned int) (s[5] ^ 0x80); - return 6; - } - /* invalid multibyte character */ - } - else - { - /* incomplete multibyte character */ - *puc = 0xfffd; - return n; - } - } + { + if (n >= 6) + { + if ((s[1] ^ 0x80) < 0x40) + { + if ((s[2] ^ 0x80) < 0x40) + { + if ((s[3] ^ 0x80) < 0x40) + { + if ((s[4] ^ 0x80) < 0x40) + { + if ((s[5] ^ 0x80) < 0x40) + { + if (c >= 0xfd || s[1] >= 0x84) + { + *puc = ((unsigned int) (c & 0x01) << 30) + | ((unsigned int) (s[1] ^ 0x80) << 24) + | ((unsigned int) (s[2] ^ 0x80) << 18) + | ((unsigned int) (s[3] ^ 0x80) << 12) + | ((unsigned int) (s[4] ^ 0x80) << 6) + | (unsigned int) (s[5] ^ 0x80); + return 6; + } + /* invalid multibyte character */ + *puc = 0xfffd; + return 6; + } + /* invalid multibyte character */ + *puc = 0xfffd; + return 5; + } + /* invalid multibyte character */ + *puc = 0xfffd; + return 4; + } + /* invalid multibyte character */ + *puc = 0xfffd; + return 3; + } + /* invalid multibyte character */ + return 2; + } + /* invalid multibyte character */ + } + else + { + /* incomplete multibyte character */ + *puc = 0xfffd; + return n; + } + } #endif } /* invalid multibyte character */