如何在Ruby中的字符串中检测CJK字符？ [英] How can I detect CJK characters in a string in Ruby?

问题描述

给定Ruby 1.8.7中的字符串（没有使用\p {}支持Unicode属性的真棒Oniguruma正则表达式引擎），我想要能够确定字符串是否包含一个或多个中文，日文，或韩语字符;即

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

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块，但我想如果有人知道Ruby中现有的解决方案是值得的。 p>

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.

推荐答案

（ruby 1.9.2）

(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 {}匹配字符的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，Braille， ，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，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和Yi。

\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, Gurmuk Han, Hangul, Hanunoo, Hebrew, Hiragana, Inherited, Kannada, Katakana, Kayah_Li, Kharosht 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.

哇。 Ruby Regexp来源。

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