2 Commits

Author	SHA1	Message	Date
Lukas Fleischer	496f0d98f8	utf8_width() performance improvements ... * Sort character width lookup table by character ranges. * Use binary search instead of linear search for UTF-8 character width lookups which will speed up utf8_width() (O(log n) instead of O(n)). Signed-off-by: Lukas Fleischer <calcurse@cryptocrack.de>	2011-07-02 10:09:18 +02:00
Lukas Fleischer	271457b7a4	Add basic UTF-8 helper functions ... Add utf8_width() and utf8_strwidth() which can be used to calculate the display width of a single character or a string, respectively. A lookup table is used to spot double width characters, as well as composing characters. There currently isn't any code to deal with ambigious characters. Signed-off-by: Lukas Fleischer <calcurse@cryptocrack.de>	2011-06-29 15:43:44 +02:00