camelcase tokenizer

gistfile1.txt

curl -XDELETE localhost:9200/test
curl -XPUT 'localhost:9200/test?pretty=1' -d '
{
    "settings":{
        "analysis": {
            "analyzer": {
                "camel":{
                    "type": "pattern",
                    "lowercase": true,
                    "pattern":"([^\\p{L}\\d]+)|(?<=\\D)(?=\\d)|(?<=\\d)(?=\\D)|(?<=[\\p{L}&&[^\\p{Lu}]])(?=\\p{Lu})|(?<=\\p{Lu})(?=\\p{Lu}[\\p{L}&&[^\\p{Lu}]])"
                }
            }
        }
    }
}'
curl 'localhost:9200/test/_analyze?pretty=1&analyzer=camel' -d 'MooseX::FTPClass foo_bar123Baz'