README.md

Simple XML2JSON Parser


It does not parse the following elements:

• CDATA sections (*)
• Processing instructions
• XML declarations
• Entity declarations
• Comments

Installation

$ npm install xml2json

A Note on Windows Installation

Installing this module on Windows machines often requires extra steps because this module uses node-expat (which in turn uses node-gyp). In most cases (but not all!), installing windows build tools will fix the problem:

npm install --global --production windows-build-tools

See below if this does not work.

Usage

var parser = require('xml2json');

var xml = "<foo attr=\"value\">bar</foo>";
console.log("input -> %s", xml)

// xml to json
var json = parser.toJson(xml);
console.log("to json -> %s", json);

// json to xml
var xml = parser.toXml(json);
console.log("back to xml -> %s", xml)

API

parser.toJson(xml, options);

parser.toXml(json);

Options object for toJson

Default values:

var options = {
    object: false,
    reversible: false,
    coerce: false,
    sanitize: true,
    trim: true,
    arrayNotation: false
    alternateTextNode: false
};

• object: Returns a Javascript object instead of a JSON string
• reversible: Makes the JSON reversible to XML (*)
• coerce: Makes type coercion. i.e.: numbers and booleans present in attributes and element values are converted from string to its correspondent data types. Coerce can be optionally defined as an object with specific methods of coercion based on attribute name or tag name, with fallback to default coercion.
• trim: Removes leading and trailing whitespaces as well as line terminators in element values.
• arrayNotation: XML child nodes are always treated as arrays NB: you can specify a selective array of nodes for this to apply to instead of the whole document.
• sanitize: Sanitizes the following characters present in element values:

var chars =  {
    '<': '&lt;',
    '>': '&gt;',
    '(': '&#40;',
    ')': '&#41;',
    '#': '&#35;',
    '&': '&amp;',
    '"': '&quot;',
    "'": '&apos;'
};

• alternateTextNode: Changes the default textNode property from $t to _t when option is set to true. Alternatively a string can be specified which will override $t to what ever the string is.

Options object for toXml

Default values:

var options = {
    sanitize: false,
    ignoreNull: false
};

• sanitize: false is the default option to behave like previous versions
• ignoreNull: Ignores all null values

(*) xml2json tranforms CDATA content to JSON, but it doesn't generate a reversible structure.

More on Windows Installation

If you cannot install this module after first running npm install --global --production windows-build-tools, try the following:

npm install --global --production windows-build-tools --vs2015

If that does not work, see this article for additional solutions as well as node-expat documentation and node-gyp documentation.

License

(The MIT License)

Copyright (c) 2016 xml2json AUTHORS

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.