X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Funistr%2Fu8-mblen.c;h=5f8005bb79ceecd20438bf1110781343d6973561;hb=1276a2c5f24c0c932426aca9c899fa524d2443f2;hp=1981befed0ada096989bf7ac8dd91dac8060d026;hpb=ac5cf7982cea8a4bb17680b6b9925f301cfa4220;p=gnulib.git diff --git a/lib/unistr/u8-mblen.c b/lib/unistr/u8-mblen.c index 1981befed..5f8005bb7 100644 --- a/lib/unistr/u8-mblen.c +++ b/lib/unistr/u8-mblen.c @@ -1,5 +1,6 @@ /* Look at first character in UTF-8 string. - Copyright (C) 1999-2000, 2002, 2006-2007 Free Software Foundation, Inc. + Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2014 Free Software + Foundation, Inc. Written by Bruno Haible , 2002. This program is free software: you can redistribute it and/or modify it @@ -25,73 +26,73 @@ u8_mblen (const uint8_t *s, size_t n) { if (n > 0) { - /* Keep in sync with unistr.h and utf8-ucs4.c. */ + /* Keep in sync with unistr.h and u8-mbtouc-aux.c. */ uint8_t c = *s; if (c < 0x80) - return (c != 0 ? 1 : 0); + return (c != 0 ? 1 : 0); if (c >= 0xc2) - { - if (c < 0xe0) - { - if (n >= 2 + { + if (c < 0xe0) + { + if (n >= 2 #if CONFIG_UNICODE_SAFETY - && (s[1] ^ 0x80) < 0x40 + && (s[1] ^ 0x80) < 0x40 #endif - ) - return 2; - } - else if (c < 0xf0) - { - if (n >= 3 + ) + return 2; + } + else if (c < 0xf0) + { + if (n >= 3 #if CONFIG_UNICODE_SAFETY - && (s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40 - && (c >= 0xe1 || s[1] >= 0xa0) - && (c != 0xed || s[1] < 0xa0) + && (s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40 + && (c >= 0xe1 || s[1] >= 0xa0) + && (c != 0xed || s[1] < 0xa0) #endif - ) - return 3; - } - else if (c < 0xf8) - { - if (n >= 4 + ) + return 3; + } + else if (c < 0xf8) + { + if (n >= 4 #if CONFIG_UNICODE_SAFETY - && (s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40 - && (s[3] ^ 0x80) < 0x40 - && (c >= 0xf1 || s[1] >= 0x90) + && (s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40 + && (s[3] ^ 0x80) < 0x40 + && (c >= 0xf1 || s[1] >= 0x90) #if 1 - && (c < 0xf4 || (c == 0xf4 && s[1] < 0x90)) + && (c < 0xf4 || (c == 0xf4 && s[1] < 0x90)) #endif #endif - ) - return 4; - } + ) + return 4; + } #if 0 - else if (c < 0xfc) - { - if (n >= 5 + else if (c < 0xfc) + { + if (n >= 5 #if CONFIG_UNICODE_SAFETY - && (s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40 - && (s[3] ^ 0x80) < 0x40 && (s[4] ^ 0x80) < 0x40 - && (c >= 0xf9 || s[1] >= 0x88) + && (s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40 + && (s[3] ^ 0x80) < 0x40 && (s[4] ^ 0x80) < 0x40 + && (c >= 0xf9 || s[1] >= 0x88) #endif - ) - return 5; - } - else if (c < 0xfe) - { - if (n >= 6 + ) + return 5; + } + else if (c < 0xfe) + { + if (n >= 6 #if CONFIG_UNICODE_SAFETY - && (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) + && (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 - ) - return 6; - } + ) + return 6; + } #endif - } + } } /* invalid or incomplete multibyte character */ return -1;