问题描述
如何使用ruby判断一个字符是否为汉字?
How to determine if a character is a Chinese character using ruby?
推荐答案
一篇关于 Ruby 编码的有趣文章:http://blog.grayproductions.net/articles/bytes_and_characters_in_ruby_18(这是一个系列的一部分 - 也请查看文章开头的目录)
An interesting article on encodings in Ruby: http://blog.grayproductions.net/articles/bytes_and_characters_in_ruby_18 (it's part of a series - check the table of contents at the start of the article also)
我以前没有用过汉字,但这似乎是unicode支持的列表:http://en.wikipedia.org/wiki/List_of_CJK_Unified_Ideographs.还要注意的是,这是一个统一的系统,包括日文和韩文(其中一些字符是共享的) - 不确定您是否可以区分哪些是中文.
I haven't used chinese characters before but this seems to be the list supported by unicode: http://en.wikipedia.org/wiki/List_of_CJK_Unified_Ideographs . Also take note that it's a unified system including Japanese and Korean characters (some characters are shared between them) - not sure if you can distinguish which are Chinese only.
我认为您可以通过在字符串 str 和索引为 n 的字符上调用它来检查它是否是 CJK 字符:
I think you can check if it's a CJK character by calling this on string str and character with index n:
def check_char(str, n)
list_of_chars = str.unpack("U*")
char = list_of_chars[n]
#main blocks
if char >= 0x4E00 && char <= 0x9FFF
return true
end
#extended block A
if char >= 0x3400 && char <= 0x4DBF
return true
end
#extended block B
if char >= 0x20000 && char <= 0x2A6DF
return true
end
#extended block C
if char >= 0x2A700 && char <= 0x2B73F
return true
end
return false
end
这篇关于如何判断一个字符是否是汉字的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!