Adding upstream version 6.4.3+dfsg1.upstream/6.4.3+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 294 insertions, 0 deletions

diff --git a/wp-includes/class-wp-list-util.php b/wp-includes/class-wp-list-util.php
new file mode 100644
index 0000000..6560355
--- /dev/null
+++ b/wp-includes/class-wp-list-util.php
@@ -0,0 +1,294 @@
+<?php
+/**
+ * WordPress List utility class
+ *
+ * @package WordPress
+ * @since 4.7.0
+ */
+
+/**
+ * List utility.
+ *
+ * Utility class to handle operations on an array of objects or arrays.
+ *
+ * @since 4.7.0
+ */
+#[AllowDynamicProperties]
+class WP_List_Util {
+	/**
+	 * The input array.
+	 *
+	 * @since 4.7.0
+	 * @var array
+	 */
+	private $input = array();
+
+	/**
+	 * The output array.
+	 *
+	 * @since 4.7.0
+	 * @var array
+	 */
+	private $output = array();
+
+	/**
+	 * Temporary arguments for sorting.
+	 *
+	 * @since 4.7.0
+	 * @var string[]
+	 */
+	private $orderby = array();
+
+	/**
+	 * Constructor.
+	 *
+	 * Sets the input array.
+	 *
+	 * @since 4.7.0
+	 *
+	 * @param array $input Array to perform operations on.
+	 */
+	public function __construct( $input ) {
+		$this->output = $input;
+		$this->input  = $input;
+	}
+
+	/**
+	 * Returns the original input array.
+	 *
+	 * @since 4.7.0
+	 *
+	 * @return array The input array.
+	 */
+	public function get_input() {
+		return $this->input;
+	}
+
+	/**
+	 * Returns the output array.
+	 *
+	 * @since 4.7.0
+	 *
+	 * @return array The output array.
+	 */
+	public function get_output() {
+		return $this->output;
+	}
+
+	/**
+	 * Filters the list, based on a set of key => value arguments.
+	 *
+	 * Retrieves the objects from the list that match the given arguments.
+	 * Key represents property name, and value represents property value.
+	 *
+	 * If an object has more properties than those specified in arguments,
+	 * that will not disqualify it. When using the 'AND' operator,
+	 * any missing properties will disqualify it.
+	 *
+	 * @since 4.7.0
+	 *
+	 * @param array  $args     Optional. An array of key => value arguments to match
+	 *                         against each object. Default empty array.
+	 * @param string $operator Optional. The logical operation to perform. 'AND' means
+	 *                         all elements from the array must match. 'OR' means only
+	 *                         one element needs to match. 'NOT' means no elements may
+	 *                         match. Default 'AND'.
+	 * @return array Array of found values.
+	 */
+	public function filter( $args = array(), $operator = 'AND' ) {
+		if ( empty( $args ) ) {
+			return $this->output;
+		}
+
+		$operator = strtoupper( $operator );
+
+		if ( ! in_array( $operator, array( 'AND', 'OR', 'NOT' ), true ) ) {
+			$this->output = array();
+			return $this->output;
+		}
+
+		$count    = count( $args );
+		$filtered = array();
+
+		foreach ( $this->output as $key => $obj ) {
+			$matched = 0;
+
+			foreach ( $args as $m_key => $m_value ) {
+				if ( is_array( $obj ) ) {
+					// Treat object as an array.
+					if ( array_key_exists( $m_key, $obj ) && ( $m_value == $obj[ $m_key ] ) ) {
+						++$matched;
+					}
+				} elseif ( is_object( $obj ) ) {
+					// Treat object as an object.
+					if ( isset( $obj->{$m_key} ) && ( $m_value == $obj->{$m_key} ) ) {
+						++$matched;
+					}
+				}
+			}
+
+			if ( ( 'AND' === $operator && $matched === $count )
+				|| ( 'OR' === $operator && $matched > 0 )
+				|| ( 'NOT' === $operator && 0 === $matched )
+			) {
+				$filtered[ $key ] = $obj;
+			}
+		}
+
+		$this->output = $filtered;
+
+		return $this->output;
+	}
+
+	/**
+	 * Plucks a certain field out of each element in the input array.
+	 *
+	 * This has the same functionality and prototype of
+	 * array_column() (PHP 5.5) but also supports objects.
+	 *
+	 * @since 4.7.0
+	 *
+	 * @param int|string $field     Field to fetch from the object or array.
+	 * @param int|string $index_key Optional. Field from the element to use as keys for the new array.
+	 *                              Default null.
+	 * @return array Array of found values. If `$index_key` is set, an array of found values with keys
+	 *               corresponding to `$index_key`. If `$index_key` is null, array keys from the original
+	 *               `$list` will be preserved in the results.
+	 */
+	public function pluck( $field, $index_key = null ) {
+		$newlist = array();
+
+		if ( ! $index_key ) {
+			/*
+			 * This is simple. Could at some point wrap array_column()
+			 * if we knew we had an array of arrays.
+			 */
+			foreach ( $this->output as $key => $value ) {
+				if ( is_object( $value ) ) {
+					$newlist[ $key ] = $value->$field;
+				} elseif ( is_array( $value ) ) {
+					$newlist[ $key ] = $value[ $field ];
+				} else {
+					_doing_it_wrong(
+						__METHOD__,
+						__( 'Values for the input array must be either objects or arrays.' ),
+						'6.2.0'
+					);
+				}
+			}
+
+			$this->output = $newlist;
+
+			return $this->output;
+		}
+
+		/*
+		 * When index_key is not set for a particular item, push the value
+		 * to the end of the stack. This is how array_column() behaves.
+		 */
+		foreach ( $this->output as $value ) {
+			if ( is_object( $value ) ) {
+				if ( isset( $value->$index_key ) ) {
+					$newlist[ $value->$index_key ] = $value->$field;
+				} else {
+					$newlist[] = $value->$field;
+				}
+			} elseif ( is_array( $value ) ) {
+				if ( isset( $value[ $index_key ] ) ) {
+					$newlist[ $value[ $index_key ] ] = $value[ $field ];
+				} else {
+					$newlist[] = $value[ $field ];
+				}
+			} else {
+				_doing_it_wrong(
+					__METHOD__,
+					__( 'Values for the input array must be either objects or arrays.' ),
+					'6.2.0'
+				);
+			}
+		}
+
+		$this->output = $newlist;
+
+		return $this->output;
+	}
+
+	/**
+	 * Sorts the input array based on one or more orderby arguments.
+	 *
+	 * @since 4.7.0
+	 *
+	 * @param string|array $orderby       Optional. Either the field name to order by or an array
+	 *                                    of multiple orderby fields as `$orderby => $order`.
+	 *                                    Default empty array.
+	 * @param string       $order         Optional. Either 'ASC' or 'DESC'. Only used if `$orderby`
+	 *                                    is a string. Default 'ASC'.
+	 * @param bool         $preserve_keys Optional. Whether to preserve keys. Default false.
+	 * @return array The sorted array.
+	 */
+	public function sort( $orderby = array(), $order = 'ASC', $preserve_keys = false ) {
+		if ( empty( $orderby ) ) {
+			return $this->output;
+		}
+
+		if ( is_string( $orderby ) ) {
+			$orderby = array( $orderby => $order );
+		}
+
+		foreach ( $orderby as $field => $direction ) {
+			$orderby[ $field ] = 'DESC' === strtoupper( $direction ) ? 'DESC' : 'ASC';
+		}
+
+		$this->orderby = $orderby;
+
+		if ( $preserve_keys ) {
+			uasort( $this->output, array( $this, 'sort_callback' ) );
+		} else {
+			usort( $this->output, array( $this, 'sort_callback' ) );
+		}
+
+		$this->orderby = array();
+
+		return $this->output;
+	}
+
+	/**
+	 * Callback to sort an array by specific fields.
+	 *
+	 * @since 4.7.0
+	 *
+	 * @see WP_List_Util::sort()
+	 *
+	 * @param object|array $a One object to compare.
+	 * @param object|array $b The other object to compare.
+	 * @return int 0 if both objects equal. -1 if second object should come first, 1 otherwise.
+	 */
+	private function sort_callback( $a, $b ) {
+		if ( empty( $this->orderby ) ) {
+			return 0;
+		}
+
+		$a = (array) $a;
+		$b = (array) $b;
+
+		foreach ( $this->orderby as $field => $direction ) {
+			if ( ! isset( $a[ $field ] ) || ! isset( $b[ $field ] ) ) {
+				continue;
+			}
+
+			if ( $a[ $field ] == $b[ $field ] ) {
+				continue;
+			}
+
+			$results = 'DESC' === $direction ? array( 1, -1 ) : array( -1, 1 );
+
+			if ( is_numeric( $a[ $field ] ) && is_numeric( $b[ $field ] ) ) {
+				return ( $a[ $field ] < $b[ $field ] ) ? $results[0] : $results[1];
+			}
+
+			return 0 > strcmp( $a[ $field ], $b[ $field ] ) ? $results[0] : $results[1];
+		}
+
+		return 0;
+	}
+}