ruanwz · September 2, 2010 01:48
diff --git a/regexp.rb b/regexp.rb
 reg2=/^[\w!#\$%&'*+\/=?`{|}~^-]+ #only allow to start with these symbols
      (?:\.[\w!#\$%&'*+\/=?`{|}~^-]+)* # the user name can contain dot
      @ # @ symbol
      (?:[a-zA-Z0-9-]+\.)+ # domain
      [a-zA-Z]{2,6}$ # the last part of domain
      /x # ignore spaces

 reg=/(?<allow_char> [\w!#\$%&'*+\/=?`{|}~^-]+){0} #only allow to start with these symbols
      ^(?<!\<script)(\g<allow_char>+)
      (?:\.\g<allow_char>)* # the user name can contain dot
      @ # @ symbol
      (?:[a-zA-Z0-9-]+\.)+ # domain
      [a-zA-Z]{2,6}$ # the last part of domain
      /x # ignore spaces


 def encrypt str
  str.gsub(/[A-Z]/) {|s| s.next}
 end

 puts '[email protected]'[reg] # => [email protected]
 puts '[email protected]'[reg] # => [email protected]
 puts '[email protected]'[reg] # => nil
 puts 'j*[email protected]'[reg] # => j*[email protected]
 puts '[email protected]'[reg] # => [email protected]
 puts '[email protected]'[reg] # => nil
 puts "<script>alert('boo');</script>\[email protected]"[reg] # => [email protected]

 puts encrypt "HAL"
 reg_xml=/((?<tag> \<(\w+\> \w*\g<tag>* \<\/\w+\>))/x
 puts reg_xml =~ "<body></body>"
 puts reg_xml =~ "<body><p>hi</p></body>"
 puts reg_xml =~ "<body><p>hi</p><ul></ul></body>"
 puts reg_xml =~ "sdfds<body><p>hi</p><ul><li>one</li><li>two</li></ul></body>"
 puts reg_xml =~ "<a>sdf<b>sf</a>"
	reg2=/^[\w!#\$%&'*+\/=?`{\|}~^-]+ #only allow to start with these symbols
	(?:\.[\w!#\$%&'+\/=?`{\|}~^-]+) # the user name can contain dot
	@ # @ symbol
	(?:[a-zA-Z0-9-]+\.)+ # domain
	[a-zA-Z]{2,6}$ # the last part of domain
	/x # ignore spaces

	reg=/(?<allow_char> [\w!#\$%&'*+\/=?`{\|}~^-]+){0} #only allow to start with these symbols
	^(?<!\<script)(\g<allow_char>+)
	(?:\.\g<allow_char>)* # the user name can contain dot
	@ # @ symbol
	(?:[a-zA-Z0-9-]+\.)+ # domain
	[a-zA-Z]{2,6}$ # the last part of domain
	/x # ignore spaces


	def encrypt str
	str.gsub(/[A-Z]/) {\|s\| s.next}
	end

	puts '[email protected]'[reg] # => [email protected]
	puts '[email protected]'[reg] # => [email protected]
	puts '[email protected]'[reg] # => nil
	puts 'j[email protected]'[reg] # => j[email protected]
	puts '[email protected]'[reg] # => [email protected]
	puts '[email protected]'[reg] # => nil
	puts "<script>alert('boo');</script>\[email protected]"[reg] # => [email protected]

	puts encrypt "HAL"
	reg_xml=/((?<tag> \<(\w+\> \w\g<tag> \<\/\w+\>))/x
	puts reg_xml =~ "<body></body>"
	puts reg_xml =~ "<body><p>hi</p></body>"
	puts reg_xml =~ "<body><p>hi</p><ul></ul></body>"
	puts reg_xml =~ "sdfds<body><p>hi</p><ul><li>one</li><li>two</li></ul></body>"
	puts reg_xml =~ "<a>sdf<b>sf</a>"