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Diffstat (limited to 'lib/unistr/u8-mblen.c')
-rw-r--r--lib/unistr/u8-mblen.c99
1 files changed, 50 insertions, 49 deletions
diff --git a/lib/unistr/u8-mblen.c b/lib/unistr/u8-mblen.c
index 1981befe..f6a20271 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, 2009-2010 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
@@ -29,69 +30,69 @@ u8_mblen (const uint8_t *s, size_t n)
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;