Path: | README.rdoc |
Last Update: | Tue Apr 10 20:18:22 -0400 2012 |
An early draft of a way to determine the size of the characters using EastAsianWidth.txt, based on the very early draft of a Ruby interface to UnicodeData.txt by runpaint.
Install the gem with
gem install unicode-display_width
require 'unicode/display_width'
The easy way is to use the String#display_size method:
"⚀".display_width #=> 1 '一'.display_width #=> 2
To obtain more detailed data, you can use the following syntax:
Unicode::DiplayWidth.codepoint( c )
Since it is not tested extensively, it does probably not work correctly for all characters… For example, there is a class of unicode characters, which is not exactly defined to be narrow or full-width ("ambiguous"). This gem currently gives them a size of 1, which is not always correct.
Furthermore, the index data structure can be improved.
Copyright (c) 2011 Jan Lelis, rbjl.net, released under the MIT license.
Contains code by runpaint: Copyright (c) 2009 Run Paint Run Run
Contains EastAsianWidth.txt: Copyright (c) 1991-2010 Unicode, Inc.
J-_-L