切爾斯基

/* 最新版本請(qǐng)參見 http://www.tkk7.com/chelsea/archive/2007/12/16/168118.html */

找了半天也沒有找到創(chuàng)建正則表達(dá)式的DSL, 如果你知道請(qǐng)告訴我

只好先自己寫來應(yīng)急了: http://roll-stone.googlecode.com/svn/trunk/RegexBuilder/

用起來類似這樣: 

require 'regex_builder'  

class RegexBuilderTest < Test::Unit::TestCase

  def setup

    @rb = RegexBuilder. new

  end  

  def test_ruby_start_with_r

    pattern = @rb .start_with( "r" ).to_s

    assert "ruby" .match(pattern)

  end  

  def test_ruby_start_with_r_and_end_with_y

    pattern = @rb .start_with( "r" ).any().end_with( "y" ).to_s

    assert "ruby" .match(pattern)

  end  

end

還有一個(gè) RegexUtil 來直接提供常用的正則表達(dá)式, 如email地址,ip地址等,想到啥都可以往里加

require 'regex_util'  

class RegexUtilTest < Test::Unit::TestCase 

  def test_192_168_0_3_is_a_valid_ip_address

    assert "192.168.0.3" .match(RegexUtil::IP_Pattern)

  end  

  def test_500_312_0_3_is_not_a_valid_ip_address

    assert_nil( "500.312.0.3" .match(RegexUtil::IP_Pattern) )

  end  

  def test_chelsea_at_gmail_dot_com_is_a_valid_email_address

    assert "chelsea@gmail.com" .match(RegexUtil::Email_Pattern)

  end  

  def test_www_dot_google_dot_com_is_not_a_valid_email_address

    assert_nil( "www.google.com" .match(RegexUtil::Email_Pattern) )

  end  

end

很多功能都還沒提供,希望有人一起來做