Ruby：检查东亚宽度（Unicode） [英] Ruby: Checking for East Asian Width (Unicode)

问题描述

使用Ruby，我必须以列式格式输出字符串到终端。就像这样：

  |第1行|一个字符串在这里etc 
 |第2行|另一个字符串| etc 
  

使用String＃ljust和％s的拉丁文UTF8字符可以做到这一点。

但是，当字符是韩文，中文等时会出现问题。当英文的行被散列在包含韩文的行等时，列不会对齐。

如何在这里获得列对齐？有没有办法输出相当于固定宽度字体的亚洲字符？如何在Vim中显示和编辑文档？

解决方案

晚会晚了，但希望仍然有帮助：在Ruby中，您可以使用 unicode-display_width gem 来检查字符串的东亚宽度：

pre $ require'unicode / display_width'
⚀.display_width＃=> 1
'一'.display_width＃=> 2


Using Ruby, I have to output strings in an columnar format to the terminal. Something like this:

| row 1     | a string here     | etc
| row 2     | another string    | etc

I can do this fine with Latin UTF8 characters using String#ljust and %s.

But a problem arises when the characters are Korean, Chinese, etc. The columns simply won't align when there are rows of English interspersed with rows containing Korean, etc.

How can I get column alignment here? Is there a way to output Asian characters in the equivalent of a fixed-width font? How about for documents that are meant to be displayed and edited in Vim?

解决方案

Late to the party, but hopefully still helpful: In Ruby, you can use the unicode-display_width gem to check for a string's east-asian-width:

require 'unicode/display_width'
"⚀".display_width #=> 1
'一'.display_width #=> 2

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