Selene Component for loading, parsing and, writing xml

Installation

In your composer.json:

{
	"require": {
		"php": ">=5.4.0",
		"selene/xml": "dev-development"
	}
}

Run composer install or composer update

$ composer install --dev

Testing

Run tests with:

$ vendor/bin/phpunit

The Parser

The Parser class can parse xml string, files, DOMDocuments, and DOMElements to a php array.

Parsing xml strings

<?php

use \Selene\Components\Xml\Parser;

$parser = new Parser;

$parser->parse('<data><foo>bar</foo></data>');

Parsing xml files

<?php

use \Selene\Components\Xml\Parser;

$parser = new Parser;

$parser->parse('/path/to/data.xml');

Parsing a DOMDocument

<?php

use \Selene\Components\Xml\Parser;

$parser = new Parser;

$parser->parseDom($dom);

Parsing a DOMElement

<?php

use \Selene\Components\Xml\Parser;

$parser = new Parser;

$parser->parseDomElement($element);

Parser Options

Merge attributes

<?php

use \Selene\Components\Xml\Parser;

$parser = new Parser;

$parser->setMergeAttributes(true);

Normalizing keys

You my specifay how keys are transformed by setting a key normalizer callback.

The default normalizer transforms dashes to underscores and camelcase to snakecase notation.

<?php

use \Selene\Components\Xml\Parser;

$parser = new Parser;

$parser->setKeyNormalizer(function ($key) {
	// do string transfomations
	return $key;
});

$parser->parseDomElement($element);

Set the attributes key

If attribute merging is disabled, use this to change the default attributes key (default is @attributes).

<?php

use \Selene\Components\Xml\Parser;

$parser = new Parser;

$parser->setAttributesKey('@attrs');

Set index key

This forces the parser to treat nodes with a nodeName of the given key to be handled as list.

<?php

use \Selene\Components\Xml\Parser;

$parser = new Parser;

$parser->setIndexKey('item');

Set a pluralizer

By default the parser will parse xml structures like

<entries>
	<entry>1</entry>
	<entry>2</entry>
</entries>

To something like:

<?php

['entries' => ['entry' => [1, 2]]]

Setting a pluralizer can fix this.

Note, that a pluralizer can be any callable that takes a string and returns a string.

<?php

$parser->setPluralizer(function ($string) {
	if ('entry' === $string) {
		return 'entries';
	}
});

<?php
['entries' => [1, 2]]

The Writer

Dumping php data to a xml string

<?php

use \Selene\Components\Xml\Writer;

$writer = new Writer;

$data = [
	'foo' => 'bar'
];

$writer->dump($data); // <root><foo>bar</foo></root>

// set the xml root node name:

$writer->dump($data, 'data'); // <data><foo>bar</foo></data>

Dumping php data to a DOMDocument

Note: this will create an instance of Selene\Components\Xml\Dom\DOMDocument.

<?php

use \Selene\Components\Xml\Writer;

$writer = new Writer;

$data = [
	'foo' => 'bar'
];

$dom = $writer->writeToDom($data);

##Writer options

Set the normalizer instance

Normaly, the NormalierInterface implementation is set for you when instantiating a new Writer, however you can set your own normalizer instance.

Note: the normalizer must implement the Selene\Components\Xml\Normalizer\NormalierInterface interface.

<?php

use \Selene\Components\Xml\Writer;
use \Selene\Components\Xml\Normalizer\Normalizer;

$writer = new Writer(new Normalizer);

// or

$writer->setNormalizer($myNormalizer);

Set the inflector

The inflector is the exact oppoite of the Parser's pluralizer. It singularizes strings.

<?php

$writer->setInflector(function ($string) {
	if ('items' === $string) {
		return 'item';
	}
});

Set the document encoding

Default encoding is UTF-8.

<?php
$writer->setEncoding($encoding); // string

Set an attribute key map

This is usefull if you want to output certain keys as xml attribute

<?php

$writer->setKeyMap([
	'nodeName' => ['id', 'entry'] // nested keys 'id' and 'entry' of the key
	element 'nodeName' will be set as attributes instead of childnodes.
]);

Note: you can also use use addMappedAttribute($nodeName, $attributeName) to add more mapped attributes.