re = /\(\w*\(*[^)]*[^(]*\)*\w*\)+/m
str = 'CHUOI(<h1>abc)
CHUOI((abc)
CHUOI(abc))
CHUOI((abc)123)
CHUOI(abc)123))
CHUOI(abc))123)
CHUOI((abc)))
CHUOI(abc)123)
CHUOI(abc)ABC(123)
CHUOI(abc(123))
CHUOI(abc)ABC(123))
CHUOI(abc)ABC(132))
CHUOI(abc)))ABC(123(def)))
------------------------------ spec-------------------
CHUOI(<h1>%$#<h1>^@321312*&da<hh131>)anc(abc)
CHUOI(<h1>abc)
CHUOI((<h1<h2>~!@)#$%^&*(*(*)_+**(***$#%$$abc)
CHUOI(abc))
CHUOI((abc)123)
CHUOI(abc)123))
CHUOI(abc))123)
CHUOI((abc)))
CHUOI(abc)123)
CHUOI(abc)ABC(123)
CHUOI(abc(123))
CHUOI(abc)ABC(123))
CHUOI(abc)ABC(132))
CHUOI(abc)))ABC(123(def)))
CHUOI(<h1(abc)ABC(dadahi)'
# Print the match result
str.scan(re) do |match|
puts match.to_s
end
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Ruby, please visit: http://ruby-doc.org/core-2.2.0/Regexp.html