tuc: replace comparison with bit checks in uc_len() - neatvi - [fork] simple vi… | |
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commit 6ec8f20a4a15db6ec888b4815d9b7eb426515dfa | |
parent 978c4c03d19f920e0d42ca972d27f94d1dfc5327 | |
Author: Ali Gholami Rudi <[email protected]> | |
Date: Mon, 15 Jun 2015 18:51:47 +0430 | |
uc: replace comparison with bit checks in uc_len() | |
Diffstat: | |
M uc.c | 26 +++++++++++++------------- | |
1 file changed, 13 insertions(+), 13 deletions(-) | |
--- | |
diff --git a/uc.c b/uc.c | |
t@@ -10,19 +10,19 @@ | |
int uc_len(char *s) | |
{ | |
int c = (unsigned char) s[0]; | |
- if (c > 0 && c <= 0x7f) | |
- return 1; | |
- if (c >= 0xfc) | |
- return 6; | |
- if (c >= 0xf8) | |
- return 5; | |
- if (c >= 0xf0) | |
- return 4; | |
- if (c >= 0xe0) | |
- return 3; | |
- if (c >= 0xc0) | |
+ if (~c & 0x80) | |
+ return c > 0; | |
+ if (~c & 0x20) | |
return 2; | |
- return c != 0; | |
+ if (~c & 0x10) | |
+ return 3; | |
+ if (~c & 0x80) | |
+ return 4; | |
+ if (~c & 0x40) | |
+ return 5; | |
+ if (~c & 0x20) | |
+ return 6; | |
+ return 1; | |
} | |
/* the number of utf-8 characters in s */ | |
t@@ -121,7 +121,7 @@ char *uc_chr(char *s, int off) | |
return s && (off < 0 || i == off) ? s : ""; | |
} | |
-/* the number of characters between s and s + off*/ | |
+/* the number of characters between s and s + off */ | |
int uc_off(char *s, int off) | |
{ | |
char *e = s + off; |