re = /(?="_id"\s*:)(?&key_value)
(?(DEFINE)
(?<string_inner>(?<=["])(?>[^"\\]++|[\\].)++(?=["]))
(?<string>["](?&string_inner)?+["])
(?<object>[{]\s*+(?&key_values)?+\s*+[}])
(?<array>\[\s*+(?&values)?+\s*+\])
(?<key_values>(?&key_value)(?>\s*+[,]\s*+(?&key_value))*+)
(?<key_value>(?&string)\s*+[:]\s*+(?&value))
(?<number>[-]?+\d++(?>[.]\d++)?+(?>[Ee][+-]?+\d++)?+)
(?<bool>true|false)
(?<scalar>(?&bool)|(?&number)|(?&string)|null)
(?<value>(?&scalar)|(?&object)|(?&array))
(?<values>(?&value)(?>\s*+[,]\s*+(?&value))*+)
)/mx
str = '[
{
"_id": "56af331efbeca6240c61b2ca",
"index": 120000,
"guid": "bedb2018-c017-429E-b520-696ea3666692",
"isActive": false,
"balance": "$2,202,350",
"object": {
"name": "alexander",
"lastname": "lang"
}
}
]
'
# 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