--- /dev/null
+<?php
+
+/*
+ * This file is a part of dflydev/dot-access-data.
+ *
+ * (c) Dragonfly Development Inc.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Dflydev\DotAccessData;
+
+class Data implements DataInterface
+{
+ /**
+ * Internal representation of data data
+ *
+ * @var array
+ */
+ protected $data;
+
+ /**
+ * Constructor
+ *
+ * @param array|null $data
+ */
+ public function __construct(array $data = null)
+ {
+ $this->data = $data ?: array();
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function append($key, $value = null)
+ {
+ if (0 == strlen($key)) {
+ throw new \RuntimeException("Key cannot be an empty string");
+ }
+
+ $currentValue =& $this->data;
+ $keyPath = explode('.', $key);
+
+ if (1 == count($keyPath)) {
+ if (!isset($currentValue[$key])) {
+ $currentValue[$key] = array();
+ }
+ if (!is_array($currentValue[$key])) {
+ // Promote this key to an array.
+ // TODO: Is this really what we want to do?
+ $currentValue[$key] = array($currentValue[$key]);
+ }
+ $currentValue[$key][] = $value;
+
+ return;
+ }
+
+ $endKey = array_pop($keyPath);
+ for ( $i = 0; $i < count($keyPath); $i++ ) {
+ $currentKey =& $keyPath[$i];
+ if ( ! isset($currentValue[$currentKey]) ) {
+ $currentValue[$currentKey] = array();
+ }
+ $currentValue =& $currentValue[$currentKey];
+ }
+
+ if (!isset($currentValue[$endKey])) {
+ $currentValue[$endKey] = array();
+ }
+ if (!is_array($currentValue[$endKey])) {
+ $currentValue[$endKey] = array($currentValue[$endKey]);
+ }
+ // Promote this key to an array.
+ // TODO: Is this really what we want to do?
+ $currentValue[$endKey][] = $value;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function set($key, $value = null)
+ {
+ if (0 == strlen($key)) {
+ throw new \RuntimeException("Key cannot be an empty string");
+ }
+
+ $currentValue =& $this->data;
+ $keyPath = explode('.', $key);
+
+ if (1 == count($keyPath)) {
+ $currentValue[$key] = $value;
+
+ return;
+ }
+
+ $endKey = array_pop($keyPath);
+ for ( $i = 0; $i < count($keyPath); $i++ ) {
+ $currentKey =& $keyPath[$i];
+ if (!isset($currentValue[$currentKey])) {
+ $currentValue[$currentKey] = array();
+ }
+ if (!is_array($currentValue[$currentKey])) {
+ throw new \RuntimeException("Key path at $currentKey of $key cannot be indexed into (is not an array)");
+ }
+ $currentValue =& $currentValue[$currentKey];
+ }
+ $currentValue[$endKey] = $value;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function remove($key)
+ {
+ if (0 == strlen($key)) {
+ throw new \RuntimeException("Key cannot be an empty string");
+ }
+
+ $currentValue =& $this->data;
+ $keyPath = explode('.', $key);
+
+ if (1 == count($keyPath)) {
+ unset($currentValue[$key]);
+
+ return;
+ }
+
+ $endKey = array_pop($keyPath);
+ for ( $i = 0; $i < count($keyPath); $i++ ) {
+ $currentKey =& $keyPath[$i];
+ if (!isset($currentValue[$currentKey])) {
+ return;
+ }
+ $currentValue =& $currentValue[$currentKey];
+ }
+ unset($currentValue[$endKey]);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function get($key, $default = null)
+ {
+ $currentValue = $this->data;
+ $keyPath = explode('.', $key);
+
+ for ( $i = 0; $i < count($keyPath); $i++ ) {
+ $currentKey = $keyPath[$i];
+ if (!isset($currentValue[$currentKey]) ) {
+ return $default;
+ }
+ if (!is_array($currentValue)) {
+ return $default;
+ }
+ $currentValue = $currentValue[$currentKey];
+ }
+
+ return $currentValue === null ? $default : $currentValue;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function has($key)
+ {
+ $currentValue = &$this->data;
+ $keyPath = explode('.', $key);
+
+ for ( $i = 0; $i < count($keyPath); $i++ ) {
+ $currentKey = $keyPath[$i];
+ if (
+ !is_array($currentValue) ||
+ !array_key_exists($currentKey, $currentValue)
+ ) {
+ return false;
+ }
+ $currentValue = &$currentValue[$currentKey];
+ }
+
+ return true;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getData($key)
+ {
+ $value = $this->get($key);
+ if (is_array($value) && Util::isAssoc($value)) {
+ return new Data($value);
+ }
+
+ throw new \RuntimeException("Value at '$key' could not be represented as a DataInterface");
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function import(array $data, $clobber = true)
+ {
+ $this->data = Util::mergeAssocArray($this->data, $data, $clobber);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function importData(DataInterface $data, $clobber = true)
+ {
+ $this->import($data->export(), $clobber);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function export()
+ {
+ return $this->data;
+ }
+}