XML to JSON

Convert 1,000,000 person records from XML to JSON as fast as possible.

Input

XML document on STDIN:

<?xml version="1.0" encoding="UTF-8"?>
<persons>
    <person id="1512376">
        <age>30</age>
        <height>169.1</height>
        <married>true</married>
        <phone code="+6"><number>1283603279</number></phone>
        <phone code="+6"><number>1659964668</number></phone>
    </person>
    ...
</persons>

Output

One JSON object per person to STDOUT, preserving order:

{
    "id": 1512376,
    "age": 30,
    "height": 169.1,
    "married": true,
    "phones": [
        {
            "code": "+6",
            "number": 1283603279
        },
        {
            "code": "+6",
            "number": 1659964668
        }
    ]
}

Constraints

• Preserve the order of persons
• Omit the phones field if the phone array is empty
• Maximum number of phones per person is 3