如何在Ruby中检测字符串中的某些Unicode字符？ [英] How can I detect certain Unicode characters in a string in Ruby?

问题描述

给出Ruby 1.8.7中的一个字符串（没有支持Unicode属性的真正的Oniguruma正则表达式引擎，它具有\ {{}），我想要确定字符串是否包含一个或多个中文，日文，或韩文;即

  class String 
 def contains_cjk？ 
 ... 
 end 
 end 
 
>> 日本语 .contains_cjk？ 
 => true 
>> '광고프로그램'.contains_cjk？ 
 => true 
>> 艾弗森将退出篮坛 .contains_cjk？ 
 => true 
>> 'Watashi ha bakana gaijin desu。'。contains_cjk？ 
 => false 
  

我怀疑这将会归结为查看字符串中的任何字符是否在 Unihan CJKV Unicode区块，但我认为值得问是否有人知道现有的解决方案

（ruby 1.9.2）

  #encoding：UTF-8 
 class String 
 def contains_cjk？ 
 !!（self =〜/ \p {Han} | \p {Katakana} | \p {Hiragana} | \p {Hangul} /）
 end 
 end 
 
 strings = ['日本'，'광고프로그램'，'艾弗森将退出篮坛'，'Watashi ha bakana gaijin desu'] 
 strings.each {| s | put s.contains_cjk？} 
 
 #true 
 #true 
 #true 
 #false 
  

\p {}匹配一个字符的Unicode脚本。

支持以下脚本：阿拉伯语，亚美尼亚语，巴厘语，孟加拉语，Bopomofo，盲文，Buginese ，布什，加拿大，巴基斯坦，坎Cham，切诺基，普通科普特，楔形文字，塞浦路斯，西里尔，德雷纳，德瓦纳加里，埃塞俄比亚，格鲁吉亚，格拉格利亚，哥特式，希腊文，古吉拉特语，古尔姆基，汉，韩文，汉诺，希伯来语，平假名， ，加纳达，片假名，Kayah_Li，Kharoshthi，高棉，老挝，拉丁语，Lepcha，Limbu，Linear_B，Lycian，Lydian，Malayalam，蒙古，缅甸，New_Tai_Lue，Nko，Ogham，Ol_Chiki，Old_Italic，Old_Persian，Oriya，Osmanya，Phags_Pa，Phoenician ，Rejang，符文，Saurashtra，沙维亚语，僧伽罗语，Sundㄧese，Syloti_Nagri，Syriac，菲律宾语，Tagbanwa，Tai_Le，泰米尔语，泰卢固语，泰纳，泰国语，西藏文，Tifinagh，Ugaritic，Vai和Yi。

哇。 Ruby Regexp源。

Given a string in Ruby 1.8.7 (without the awesome Oniguruma regular expression engine that supports Unicode properties with \p{}), I would like to be able to determine if the string contains one or more Chinese, Japanese, or Korean characters; i.e.

class String
  def contains_cjk?
    ...
  end
end

>> '日本語'.contains_cjk?
=> true
>> '광고 프로그램'.contains_cjk?
=> true
>> '艾弗森将退出篮坛'.contains_cjk?
=> true
>> 'Watashi ha bakana gaijin desu.'.contains_cjk?
=> false

I suspect that this will boil down to seeing if any of the characters in the string are in the Unihan CJKV Unicode blocks, but I figured it was worth asking if anyone knows of an existing solution in Ruby.

解决方案

(ruby 1.9.2)

#encoding: UTF-8
class String
  def contains_cjk?
    !!(self =~ /\p{Han}|\p{Katakana}|\p{Hiragana}|\p{Hangul}/)
  end
end

strings= ['日本', '광고 프로그램', '艾弗森将退出篮坛', 'Watashi ha bakana gaijin desu.']
strings.each{|s| puts s.contains_cjk?}

#true
#true
#true
#false

\p{} matches a character’s Unicode script.
The following scripts are supported: Arabic, Armenian, Balinese, Bengali, Bopomofo, Braille, Buginese, Buhid, Canadian_Aboriginal, Carian, Cham, Cherokee, Common, Coptic, Cuneiform, Cypriot, Cyrillic, Deseret, Devanagari, Ethiopic, Georgian, Glagolitic, Gothic, Greek, Gujarati, Gurmukhi, Han, Hangul, Hanunoo, Hebrew, Hiragana, Inherited, Kannada, Katakana, Kayah_Li, Kharoshthi, Khmer, Lao, Latin, Lepcha, Limbu, Linear_B, Lycian, Lydian, Malayalam, Mongolian, Myanmar, New_Tai_Lue, Nko, Ogham, Ol_Chiki, Old_Italic, Old_Persian, Oriya, Osmanya, Phags_Pa, Phoenician, Rejang, Runic, Saurashtra, Shavian, Sinhala, Sundanese, Syloti_Nagri, Syriac, Tagalog, Tagbanwa, Tai_Le, Tamil, Telugu, Thaana, Thai, Tibetan, Tifinagh, Ugaritic, Vai, and Yi.

Wow. Ruby Regexp source .

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