mirror of
https://github.com/YunoHost-Apps/limesurvey_ynh.git
synced 2024-09-03 19:36:32 +02:00
994 lines
28 KiB
PHP
994 lines
28 KiB
PHP
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<?php
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/**
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* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
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* Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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*
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* Licensed under The MIT License
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* For full copyright and license information, please see the LICENSE.txt
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* Redistributions of files must retain the above copyright notice.
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*
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* @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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* @link http://cakephp.org CakePHP(tm) Project
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* @package Cake.Utility
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* @since CakePHP(tm) v 2.2.0
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* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
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*/
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//App::uses('String', 'Utility');
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/**
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* Library of array functions for manipulating and extracting data
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* from arrays or 'sets' of data.
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*
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* `Hash` provides an improved interface, more consistent and
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* predictable set of features over `Set`. While it lacks the spotty
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* support for pseudo Xpath, its more fully featured dot notation provides
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* similar features in a more consistent implementation.
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*
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* @package Cake.Utility
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*/
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class Hash {
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/**
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* Get a single value specified by $path out of $data.
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* Does not support the full dot notation feature set,
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* but is faster for simple read operations.
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*
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* @param array $data Array of data to operate on.
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* @param string|array $path The path being searched for. Either a dot
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* separated string, or an array of path segments.
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* @return mixed The value fetched from the array, or null.
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*/
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public static function get(array $data, $path) {
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if (empty($data)) {
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return null;
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}
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if (is_string($path) || is_numeric($path)) {
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$parts = explode('.', $path);
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} else {
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$parts = $path;
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}
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foreach ($parts as $key) {
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if (is_array($data) && isset($data[$key])) {
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$data =& $data[$key];
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} else {
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return null;
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}
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}
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return $data;
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}
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/**
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* Gets the values from an array matching the $path expression.
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* The path expression is a dot separated expression, that can contain a set
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* of patterns and expressions:
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*
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* - `{n}` Matches any numeric key, or integer.
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* - `{s}` Matches any string key.
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* - `Foo` Matches any key with the exact same value.
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*
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* There are a number of attribute operators:
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*
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* - `=`, `!=` Equality.
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* - `>`, `<`, `>=`, `<=` Value comparison.
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* - `=/.../` Regular expression pattern match.
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*
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* Given a set of User array data, from a `$User->find('all')` call:
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*
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* - `1.User.name` Get the name of the user at index 1.
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* - `{n}.User.name` Get the name of every user in the set of users.
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* - `{n}.User[id]` Get the name of every user with an id key.
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* - `{n}.User[id>=2]` Get the name of every user with an id key greater than or equal to 2.
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* - `{n}.User[username=/^paul/]` Get User elements with username matching `^paul`.
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*
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* @param array $data The data to extract from.
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* @param string $path The path to extract.
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* @return array An array of the extracted values. Returns an empty array
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* if there are no matches.
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*/
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public static function extract(array $data, $path) {
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if (empty($path)) {
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return $data;
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}
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// Simple paths.
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if (!preg_match('/[{\[]/', $path)) {
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return (array)self::get($data, $path);
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}
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if (strpos($path, '[') === false) {
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$tokens = explode('.', $path);
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} else {
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$tokens = String::tokenize($path, '.', '[', ']');
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}
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$_key = '__set_item__';
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$context = array($_key => array($data));
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foreach ($tokens as $token) {
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$next = array();
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$conditions = false;
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$position = strpos($token, '[');
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if ($position !== false) {
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$conditions = substr($token, $position);
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$token = substr($token, 0, $position);
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}
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foreach ($context[$_key] as $item) {
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foreach ((array)$item as $k => $v) {
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if (self::_matchToken($k, $token)) {
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$next[] = $v;
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}
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}
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}
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// Filter for attributes.
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if ($conditions) {
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$filter = array();
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foreach ($next as $item) {
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if (self::_matches($item, $conditions)) {
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$filter[] = $item;
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}
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}
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$next = $filter;
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}
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$context = array($_key => $next);
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}
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return $context[$_key];
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}
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/**
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* Check a key against a token.
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*
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* @param string $key The key in the array being searched.
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* @param string $token The token being matched.
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* @return boolean
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*/
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protected static function _matchToken($key, $token) {
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if ($token === '{n}') {
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return is_numeric($key);
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}
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if ($token === '{s}') {
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return is_string($key);
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}
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if (is_numeric($token)) {
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return ($key == $token);
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}
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return ($key === $token);
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}
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/**
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* Checks whether or not $data matches the attribute patterns
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*
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* @param array $data Array of data to match.
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* @param string $selector The patterns to match.
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* @return boolean Fitness of expression.
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*/
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protected static function _matches(array $data, $selector) {
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preg_match_all(
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'/(\[ (?<attr>[^=><!]+?) (\s* (?<op>[><!]?[=]|[><]) \s* (?<val>(?:\/.*?\/ | [^\]]+)) )? \])/x',
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$selector,
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$conditions,
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PREG_SET_ORDER
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);
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foreach ($conditions as $cond) {
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$attr = $cond['attr'];
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$op = isset($cond['op']) ? $cond['op'] : null;
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$val = isset($cond['val']) ? $cond['val'] : null;
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// Presence test.
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if (empty($op) && empty($val) && !isset($data[$attr])) {
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return false;
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}
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// Empty attribute = fail.
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if (!(isset($data[$attr]) || array_key_exists($attr, $data))) {
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return false;
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}
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$prop = isset($data[$attr]) ? $data[$attr] : null;
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// Pattern matches and other operators.
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if ($op === '=' && $val && $val[0] === '/') {
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if (!preg_match($val, $prop)) {
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return false;
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}
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} elseif (
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($op === '=' && $prop != $val) ||
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($op === '!=' && $prop == $val) ||
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($op === '>' && $prop <= $val) ||
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($op === '<' && $prop >= $val) ||
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($op === '>=' && $prop < $val) ||
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($op === '<=' && $prop > $val)
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) {
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return false;
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}
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}
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return true;
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}
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/**
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* Insert $values into an array with the given $path. You can use
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* `{n}` and `{s}` elements to insert $data multiple times.
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*
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* @param array $data The data to insert into.
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* @param string $path The path to insert at.
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* @param array $values The values to insert.
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* @return array The data with $values inserted.
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*/
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public static function insert(array $data, $path, $values = null) {
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$tokens = explode('.', $path);
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if (strpos($path, '{') === false) {
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return self::_simpleOp('insert', $data, $tokens, $values);
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}
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$token = array_shift($tokens);
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$nextPath = implode('.', $tokens);
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foreach ($data as $k => $v) {
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if (self::_matchToken($k, $token)) {
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$data[$k] = self::insert($v, $nextPath, $values);
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}
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}
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return $data;
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}
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/**
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* Perform a simple insert/remove operation.
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*
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* @param string $op The operation to do.
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* @param array $data The data to operate on.
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* @param array $path The path to work on.
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* @param mixed $values The values to insert when doing inserts.
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* @return array $data.
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*/
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protected static function _simpleOp($op, $data, $path, $values = null) {
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$_list =& $data;
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$count = count($path);
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$last = $count - 1;
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foreach ($path as $i => $key) {
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if (is_numeric($key) && intval($key) > 0 || $key === '0') {
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$key = intval($key);
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}
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if ($op === 'insert') {
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if ($i === $last) {
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$_list[$key] = $values;
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return $data;
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}
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if (!isset($_list[$key])) {
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$_list[$key] = array();
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}
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$_list =& $_list[$key];
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if (!is_array($_list)) {
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$_list = array();
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}
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} elseif ($op === 'remove') {
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if ($i === $last) {
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unset($_list[$key]);
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return $data;
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}
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if (!isset($_list[$key])) {
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return $data;
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}
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$_list =& $_list[$key];
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}
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}
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}
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/**
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* Remove data matching $path from the $data array.
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* You can use `{n}` and `{s}` to remove multiple elements
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* from $data.
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*
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* @param array $data The data to operate on
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* @param string $path A path expression to use to remove.
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* @return array The modified array.
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*/
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public static function remove(array $data, $path) {
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$tokens = explode('.', $path);
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if (strpos($path, '{') === false) {
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return self::_simpleOp('remove', $data, $tokens);
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}
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$token = array_shift($tokens);
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$nextPath = implode('.', $tokens);
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foreach ($data as $k => $v) {
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$match = self::_matchToken($k, $token);
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if ($match && is_array($v)) {
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$data[$k] = self::remove($v, $nextPath);
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} elseif ($match) {
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unset($data[$k]);
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}
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}
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return $data;
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}
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/**
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* Creates an associative array using `$keyPath` as the path to build its keys, and optionally
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* `$valuePath` as path to get the values. If `$valuePath` is not specified, all values will be initialized
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* to null (useful for Hash::merge). You can optionally group the values by what is obtained when
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* following the path specified in `$groupPath`.
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*
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* @param array $data Array from where to extract keys and values
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* @param string $keyPath A dot-separated string.
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* @param string $valuePath A dot-separated string.
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* @param string $groupPath A dot-separated string.
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* @return array Combined array
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* @link http://book.cakephp.org/2.0/en/core-utility-libraries/hash.html#Hash::combine
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*/
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public static function combine(array $data, $keyPath, $valuePath = null, $groupPath = null) {
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if (empty($data)) {
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return array();
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}
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if (is_array($keyPath)) {
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$format = array_shift($keyPath);
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$keys = self::format($data, $keyPath, $format);
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} else {
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$keys = self::extract($data, $keyPath);
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}
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if (empty($keys)) {
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return array();
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}
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if (!empty($valuePath) && is_array($valuePath)) {
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$format = array_shift($valuePath);
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$vals = self::format($data, $valuePath, $format);
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} elseif (!empty($valuePath)) {
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$vals = self::extract($data, $valuePath);
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}
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$count = count($keys);
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for ($i = 0; $i < $count; $i++) {
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$vals[$i] = isset($vals[$i]) ? $vals[$i] : null;
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}
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if ($groupPath !== null) {
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$group = self::extract($data, $groupPath);
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if (!empty($group)) {
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$c = count($keys);
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for ($i = 0; $i < $c; $i++) {
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if (!isset($group[$i])) {
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$group[$i] = 0;
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}
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if (!isset($out[$group[$i]])) {
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$out[$group[$i]] = array();
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}
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$out[$group[$i]][$keys[$i]] = $vals[$i];
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}
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return $out;
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}
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}
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if (empty($vals)) {
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return array();
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}
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return array_combine($keys, $vals);
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}
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/**
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* Returns a formatted series of values extracted from `$data`, using
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* `$format` as the format and `$paths` as the values to extract.
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*
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* Usage:
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*
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|
|
* {{{
|
||
|
|
* $result = Hash::format($users, array('{n}.User.id', '{n}.User.name'), '%s : %s');
|
||
|
|
* }}}
|
||
|
|
*
|
||
|
|
* The `$format` string can use any format options that `vsprintf()` and `sprintf()` do.
|
||
|
|
*
|
||
|
|
* @param array $data Source array from which to extract the data
|
||
|
|
* @param string $paths An array containing one or more Hash::extract()-style key paths
|
||
|
|
* @param string $format Format string into which values will be inserted, see sprintf()
|
||
|
|
* @return array An array of strings extracted from `$path` and formatted with `$format`
|
||
|
|
* @link http://book.cakephp.org/2.0/en/core-utility-libraries/hash.html#Hash::format
|
||
|
|
* @see sprintf()
|
||
|
|
* @see Hash::extract()
|
||
|
|
*/
|
||
|
|
public static function format(array $data, array $paths, $format) {
|
||
|
|
$extracted = array();
|
||
|
|
$count = count($paths);
|
||
|
|
|
||
|
|
if (!$count) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
for ($i = 0; $i < $count; $i++) {
|
||
|
|
$extracted[] = self::extract($data, $paths[$i]);
|
||
|
|
}
|
||
|
|
$out = array();
|
||
|
|
$data = $extracted;
|
||
|
|
$count = count($data[0]);
|
||
|
|
|
||
|
|
$countTwo = count($data);
|
||
|
|
for ($j = 0; $j < $count; $j++) {
|
||
|
|
$args = array();
|
||
|
|
for ($i = 0; $i < $countTwo; $i++) {
|
||
|
|
if (array_key_exists($j, $data[$i])) {
|
||
|
|
$args[] = $data[$i][$j];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$out[] = vsprintf($format, $args);
|
||
|
|
}
|
||
|
|
return $out;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Determines if one array contains the exact keys and values of another.
|
||
|
|
*
|
||
|
|
* @param array $data The data to search through.
|
||
|
|
* @param array $needle The values to file in $data
|
||
|
|
* @return boolean true if $data contains $needle, false otherwise
|
||
|
|
* @link http://book.cakephp.org/2.0/en/core-utility-libraries/hash.html#Hash::contains
|
||
|
|
*/
|
||
|
|
public static function contains(array $data, array $needle) {
|
||
|
|
if (empty($data) || empty($needle)) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
$stack = array();
|
||
|
|
|
||
|
|
while (!empty($needle)) {
|
||
|
|
$key = key($needle);
|
||
|
|
$val = $needle[$key];
|
||
|
|
unset($needle[$key]);
|
||
|
|
|
||
|
|
if (isset($data[$key]) && is_array($val)) {
|
||
|
|
$next = $data[$key];
|
||
|
|
unset($data[$key]);
|
||
|
|
|
||
|
|
if (!empty($val)) {
|
||
|
|
$stack[] = array($val, $next);
|
||
|
|
}
|
||
|
|
} elseif (!isset($data[$key]) || $data[$key] != $val) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (empty($needle) && !empty($stack)) {
|
||
|
|
list($needle, $data) = array_pop($stack);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Test whether or not a given path exists in $data.
|
||
|
|
* This method uses the same path syntax as Hash::extract()
|
||
|
|
*
|
||
|
|
* Checking for paths that could target more than one element will
|
||
|
|
* make sure that at least one matching element exists.
|
||
|
|
*
|
||
|
|
* @param array $data The data to check.
|
||
|
|
* @param string $path The path to check for.
|
||
|
|
* @return boolean Existence of path.
|
||
|
|
* @see Hash::extract()
|
||
|
|
*/
|
||
|
|
public static function check(array $data, $path) {
|
||
|
|
$results = self::extract($data, $path);
|
||
|
|
if (!is_array($results)) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
return count($results) > 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Recursively filters a data set.
|
||
|
|
*
|
||
|
|
* @param array $data Either an array to filter, or value when in callback
|
||
|
|
* @param callable $callback A function to filter the data with. Defaults to
|
||
|
|
* `self::_filter()` Which strips out all non-zero empty values.
|
||
|
|
* @return array Filtered array
|
||
|
|
* @link http://book.cakephp.org/2.0/en/core-utility-libraries/hash.html#Hash::filter
|
||
|
|
*/
|
||
|
|
public static function filter(array $data, $callback = array('self', '_filter')) {
|
||
|
|
foreach ($data as $k => $v) {
|
||
|
|
if (is_array($v)) {
|
||
|
|
$data[$k] = self::filter($v, $callback);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return array_filter($data, $callback);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Callback function for filtering.
|
||
|
|
*
|
||
|
|
* @param array $var Array to filter.
|
||
|
|
* @return boolean
|
||
|
|
*/
|
||
|
|
protected static function _filter($var) {
|
||
|
|
if ($var === 0 || $var === '0' || !empty($var)) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Collapses a multi-dimensional array into a single dimension, using a delimited array path for
|
||
|
|
* each array element's key, i.e. array(array('Foo' => array('Bar' => 'Far'))) becomes
|
||
|
|
* array('0.Foo.Bar' => 'Far').)
|
||
|
|
*
|
||
|
|
* @param array $data Array to flatten
|
||
|
|
* @param string $separator String used to separate array key elements in a path, defaults to '.'
|
||
|
|
* @return array
|
||
|
|
* @link http://book.cakephp.org/2.0/en/core-utility-libraries/hash.html#Hash::flatten
|
||
|
|
*/
|
||
|
|
public static function flatten(array $data, $separator = '.') {
|
||
|
|
$result = array();
|
||
|
|
$stack = array();
|
||
|
|
$path = null;
|
||
|
|
|
||
|
|
reset($data);
|
||
|
|
while (!empty($data)) {
|
||
|
|
$key = key($data);
|
||
|
|
$element = $data[$key];
|
||
|
|
unset($data[$key]);
|
||
|
|
|
||
|
|
if (is_array($element) && !empty($element)) {
|
||
|
|
if (!empty($data)) {
|
||
|
|
$stack[] = array($data, $path);
|
||
|
|
}
|
||
|
|
$data = $element;
|
||
|
|
reset($data);
|
||
|
|
$path .= $key . $separator;
|
||
|
|
} else {
|
||
|
|
$result[$path . $key] = $element;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (empty($data) && !empty($stack)) {
|
||
|
|
list($data, $path) = array_pop($stack);
|
||
|
|
reset($data);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Expand/unflattens an string to an array
|
||
|
|
*
|
||
|
|
* For example, unflattens an array that was collapsed with `Hash::flatten()`
|
||
|
|
* into a multi-dimensional array. So, `array('0.Foo.Bar' => 'Far')` becomes
|
||
|
|
* `array(array('Foo' => array('Bar' => 'Far')))`.
|
||
|
|
*
|
||
|
|
* @param array $data Flattened array
|
||
|
|
* @param string $separator The delimiter used
|
||
|
|
* @return array
|
||
|
|
*/
|
||
|
|
public static function expand($data, $separator = '.') {
|
||
|
|
$result = array();
|
||
|
|
foreach ($data as $flat => $value) {
|
||
|
|
$keys = explode($separator, $flat);
|
||
|
|
$keys = array_reverse($keys);
|
||
|
|
$child = array(
|
||
|
|
$keys[0] => $value
|
||
|
|
);
|
||
|
|
array_shift($keys);
|
||
|
|
foreach ($keys as $k) {
|
||
|
|
$child = array(
|
||
|
|
$k => $child
|
||
|
|
);
|
||
|
|
}
|
||
|
|
$result = self::merge($result, $child);
|
||
|
|
}
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This function can be thought of as a hybrid between PHP's `array_merge` and `array_merge_recursive`.
|
||
|
|
*
|
||
|
|
* The difference between this method and the built-in ones, is that if an array key contains another array, then
|
||
|
|
* Hash::merge() will behave in a recursive fashion (unlike `array_merge`). But it will not act recursively for
|
||
|
|
* keys that contain scalar values (unlike `array_merge_recursive`).
|
||
|
|
*
|
||
|
|
* Note: This function will work with an unlimited amount of arguments and typecasts non-array parameters into arrays.
|
||
|
|
*
|
||
|
|
* @param array $data Array to be merged
|
||
|
|
* @param mixed $merge Array to merge with. The argument and all trailing arguments will be array cast when merged
|
||
|
|
* @return array Merged array
|
||
|
|
* @link http://book.cakephp.org/2.0/en/core-utility-libraries/hash.html#Hash::merge
|
||
|
|
*/
|
||
|
|
public static function merge(array $data, $merge) {
|
||
|
|
$args = func_get_args();
|
||
|
|
$return = current($args);
|
||
|
|
|
||
|
|
while (($arg = next($args)) !== false) {
|
||
|
|
foreach ((array)$arg as $key => $val) {
|
||
|
|
if (!empty($return[$key]) && is_array($return[$key]) && is_array($val)) {
|
||
|
|
$return[$key] = self::merge($return[$key], $val);
|
||
|
|
} elseif (is_int($key) && isset($return[$key])) {
|
||
|
|
$return[] = $val;
|
||
|
|
} else {
|
||
|
|
$return[$key] = $val;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $return;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Checks to see if all the values in the array are numeric
|
||
|
|
*
|
||
|
|
* @param array $array The array to check.
|
||
|
|
* @return boolean true if values are numeric, false otherwise
|
||
|
|
* @link http://book.cakephp.org/2.0/en/core-utility-libraries/hash.html#Hash::numeric
|
||
|
|
*/
|
||
|
|
public static function numeric(array $data) {
|
||
|
|
if (empty($data)) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
$values = array_values($data);
|
||
|
|
$str = implode('', $values);
|
||
|
|
return (bool)ctype_digit($str);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Counts the dimensions of an array.
|
||
|
|
* Only considers the dimension of the first element in the array.
|
||
|
|
*
|
||
|
|
* If you have an un-even or heterogenous array, consider using Hash::maxDimensions()
|
||
|
|
* to get the dimensions of the array.
|
||
|
|
*
|
||
|
|
* @param array $array Array to count dimensions on
|
||
|
|
* @return integer The number of dimensions in $data
|
||
|
|
* @link http://book.cakephp.org/2.0/en/core-utility-libraries/hash.html#Hash::dimensions
|
||
|
|
*/
|
||
|
|
public static function dimensions(array $data) {
|
||
|
|
if (empty($data)) {
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
reset($data);
|
||
|
|
$depth = 1;
|
||
|
|
while ($elem = array_shift($data)) {
|
||
|
|
if (is_array($elem)) {
|
||
|
|
$depth += 1;
|
||
|
|
$data =& $elem;
|
||
|
|
} else {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $depth;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Counts the dimensions of *all* array elements. Useful for finding the maximum
|
||
|
|
* number of dimensions in a mixed array.
|
||
|
|
*
|
||
|
|
* @param array $data Array to count dimensions on
|
||
|
|
* @return integer The maximum number of dimensions in $data
|
||
|
|
* @link http://book.cakephp.org/2.0/en/core-utility-libraries/hash.html#Hash::maxDimensions
|
||
|
|
*/
|
||
|
|
public static function maxDimensions(array $data) {
|
||
|
|
$depth = array();
|
||
|
|
if (is_array($data) && reset($data) !== false) {
|
||
|
|
foreach ($data as $value) {
|
||
|
|
$depth[] = self::dimensions((array)$value) + 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return max($depth);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Map a callback across all elements in a set.
|
||
|
|
* Can be provided a path to only modify slices of the set.
|
||
|
|
*
|
||
|
|
* @param array $data The data to map over, and extract data out of.
|
||
|
|
* @param string $path The path to extract for mapping over.
|
||
|
|
* @param callable $function The function to call on each extracted value.
|
||
|
|
* @return array An array of the modified values.
|
||
|
|
*/
|
||
|
|
public static function map(array $data, $path, $function) {
|
||
|
|
$values = (array)self::extract($data, $path);
|
||
|
|
return array_map($function, $values);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Reduce a set of extracted values using `$function`.
|
||
|
|
*
|
||
|
|
* @param array $data The data to reduce.
|
||
|
|
* @param string $path The path to extract from $data.
|
||
|
|
* @param callable $function The function to call on each extracted value.
|
||
|
|
* @return mixed The reduced value.
|
||
|
|
*/
|
||
|
|
public static function reduce(array $data, $path, $function) {
|
||
|
|
$values = (array)self::extract($data, $path);
|
||
|
|
return array_reduce($values, $function);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Apply a callback to a set of extracted values using `$function`.
|
||
|
|
* The function will get the extracted values as the first argument.
|
||
|
|
*
|
||
|
|
* ### Example
|
||
|
|
*
|
||
|
|
* You can easily count the results of an extract using apply().
|
||
|
|
* For example to count the comments on an Article:
|
||
|
|
*
|
||
|
|
* `$count = Hash::apply($data, 'Article.Comment.{n}', 'count');`
|
||
|
|
*
|
||
|
|
* You could also use a function like `array_sum` to sum the results.
|
||
|
|
*
|
||
|
|
* `$total = Hash::apply($data, '{n}.Item.price', 'array_sum');`
|
||
|
|
*
|
||
|
|
* @param array $data The data to reduce.
|
||
|
|
* @param string $path The path to extract from $data.
|
||
|
|
* @param callable $function The function to call on each extracted value.
|
||
|
|
* @return mixed The results of the applied method.
|
||
|
|
*/
|
||
|
|
public static function apply(array $data, $path, $function) {
|
||
|
|
$values = (array)self::extract($data, $path);
|
||
|
|
return call_user_func($function, $values);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sorts an array by any value, determined by a Set-compatible path
|
||
|
|
*
|
||
|
|
* ### Sort directions
|
||
|
|
*
|
||
|
|
* - `asc` Sort ascending.
|
||
|
|
* - `desc` Sort descending.
|
||
|
|
*
|
||
|
|
* ## Sort types
|
||
|
|
*
|
||
|
|
* - `regular` For regular sorting (don't change types)
|
||
|
|
* - `numeric` Compare values numerically
|
||
|
|
* - `string` Compare values as strings
|
||
|
|
* - `natural` Compare items as strings using "natural ordering" in a human friendly way.
|
||
|
|
* Will sort foo10 below foo2 as an example. Requires PHP 5.4 or greater or it will fallback to 'regular'
|
||
|
|
*
|
||
|
|
* @param array $data An array of data to sort
|
||
|
|
* @param string $path A Set-compatible path to the array value
|
||
|
|
* @param string $dir See directions above.
|
||
|
|
* @param string $type See direction types above. Defaults to 'regular'.
|
||
|
|
* @return array Sorted array of data
|
||
|
|
* @link http://book.cakephp.org/2.0/en/core-utility-libraries/hash.html#Hash::sort
|
||
|
|
*/
|
||
|
|
public static function sort(array $data, $path, $dir, $type = 'regular') {
|
||
|
|
if (empty($data)) {
|
||
|
|
return array();
|
||
|
|
}
|
||
|
|
$originalKeys = array_keys($data);
|
||
|
|
$numeric = is_numeric(implode('', $originalKeys));
|
||
|
|
if ($numeric) {
|
||
|
|
$data = array_values($data);
|
||
|
|
}
|
||
|
|
$sortValues = self::extract($data, $path);
|
||
|
|
$sortCount = count($sortValues);
|
||
|
|
$dataCount = count($data);
|
||
|
|
|
||
|
|
// Make sortValues match the data length, as some keys could be missing
|
||
|
|
// the sorted value path.
|
||
|
|
if ($sortCount < $dataCount) {
|
||
|
|
$sortValues = array_pad($sortValues, $dataCount, null);
|
||
|
|
}
|
||
|
|
$result = self::_squash($sortValues);
|
||
|
|
$keys = self::extract($result, '{n}.id');
|
||
|
|
$values = self::extract($result, '{n}.value');
|
||
|
|
|
||
|
|
$dir = strtolower($dir);
|
||
|
|
$type = strtolower($type);
|
||
|
|
if ($type === 'natural' && version_compare(PHP_VERSION, '5.4.0', '<')) {
|
||
|
|
$type = 'regular';
|
||
|
|
}
|
||
|
|
if ($dir === 'asc') {
|
||
|
|
$dir = SORT_ASC;
|
||
|
|
} else {
|
||
|
|
$dir = SORT_DESC;
|
||
|
|
}
|
||
|
|
if ($type === 'numeric') {
|
||
|
|
$type = SORT_NUMERIC;
|
||
|
|
} elseif ($type === 'string') {
|
||
|
|
$type = SORT_STRING;
|
||
|
|
} elseif ($type === 'natural') {
|
||
|
|
$type = SORT_NATURAL;
|
||
|
|
} else {
|
||
|
|
$type = SORT_REGULAR;
|
||
|
|
}
|
||
|
|
array_multisort($values, $dir, $type, $keys, $dir, $type);
|
||
|
|
$sorted = array();
|
||
|
|
$keys = array_unique($keys);
|
||
|
|
|
||
|
|
foreach ($keys as $k) {
|
||
|
|
if ($numeric) {
|
||
|
|
$sorted[] = $data[$k];
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
if (isset($originalKeys[$k])) {
|
||
|
|
$sorted[$originalKeys[$k]] = $data[$originalKeys[$k]];
|
||
|
|
} else {
|
||
|
|
$sorted[$k] = $data[$k];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $sorted;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Helper method for sort()
|
||
|
|
* Squashes an array to a single hash so it can be sorted.
|
||
|
|
*
|
||
|
|
* @param array $data The data to squash.
|
||
|
|
* @param string $key The key for the data.
|
||
|
|
* @return array
|
||
|
|
*/
|
||
|
|
protected static function _squash($data, $key = null) {
|
||
|
|
$stack = array();
|
||
|
|
foreach ($data as $k => $r) {
|
||
|
|
$id = $k;
|
||
|
|
if (!is_null($key)) {
|
||
|
|
$id = $key;
|
||
|
|
}
|
||
|
|
if (is_array($r) && !empty($r)) {
|
||
|
|
$stack = array_merge($stack, self::_squash($r, $id));
|
||
|
|
} else {
|
||
|
|
$stack[] = array('id' => $id, 'value' => $r);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $stack;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Computes the difference between two complex arrays.
|
||
|
|
* This method differs from the built-in array_diff() in that it will preserve keys
|
||
|
|
* and work on multi-dimensional arrays.
|
||
|
|
*
|
||
|
|
* @param array $data First value
|
||
|
|
* @param array $compare Second value
|
||
|
|
* @return array Returns the key => value pairs that are not common in $data and $compare
|
||
|
|
* The expression for this function is ($data - $compare) + ($compare - ($data - $compare))
|
||
|
|
* @link http://book.cakephp.org/2.0/en/core-utility-libraries/hash.html#Hash::diff
|
||
|
|
*/
|
||
|
|
public static function diff(array $data, $compare) {
|
||
|
|
if (empty($data)) {
|
||
|
|
return (array)$compare;
|
||
|
|
}
|
||
|
|
if (empty($compare)) {
|
||
|
|
return (array)$data;
|
||
|
|
}
|
||
|
|
$intersection = array_intersect_key($data, $compare);
|
||
|
|
while (($key = key($intersection)) !== null) {
|
||
|
|
if ($data[$key] == $compare[$key]) {
|
||
|
|
unset($data[$key]);
|
||
|
|
unset($compare[$key]);
|
||
|
|
}
|
||
|
|
next($intersection);
|
||
|
|
}
|
||
|
|
return $data + $compare;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Merges the difference between $data and $push onto $data.
|
||
|
|
*
|
||
|
|
* @param array $data The data to append onto.
|
||
|
|
* @param array $compare The data to compare and append onto.
|
||
|
|
* @return array The merged array.
|
||
|
|
*/
|
||
|
|
public static function mergeDiff(array $data, $compare) {
|
||
|
|
if (empty($data) && !empty($compare)) {
|
||
|
|
return $compare;
|
||
|
|
}
|
||
|
|
if (empty($compare)) {
|
||
|
|
return $data;
|
||
|
|
}
|
||
|
|
foreach ($compare as $key => $value) {
|
||
|
|
if (!array_key_exists($key, $data)) {
|
||
|
|
$data[$key] = $value;
|
||
|
|
} elseif (is_array($value)) {
|
||
|
|
$data[$key] = self::mergeDiff($data[$key], $compare[$key]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $data;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Normalizes an array, and converts it to a standard format.
|
||
|
|
*
|
||
|
|
* @param array $data List to normalize
|
||
|
|
* @param boolean $assoc If true, $data will be converted to an associative array.
|
||
|
|
* @return array
|
||
|
|
* @link http://book.cakephp.org/2.0/en/core-utility-libraries/hash.html#Hash::normalize
|
||
|
|
*/
|
||
|
|
public static function normalize(array $data, $assoc = true) {
|
||
|
|
$keys = array_keys($data);
|
||
|
|
$count = count($keys);
|
||
|
|
$numeric = true;
|
||
|
|
|
||
|
|
if (!$assoc) {
|
||
|
|
for ($i = 0; $i < $count; $i++) {
|
||
|
|
if (!is_int($keys[$i])) {
|
||
|
|
$numeric = false;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (!$numeric || $assoc) {
|
||
|
|
$newList = array();
|
||
|
|
for ($i = 0; $i < $count; $i++) {
|
||
|
|
if (is_int($keys[$i])) {
|
||
|
|
$newList[$data[$keys[$i]]] = null;
|
||
|
|
} else {
|
||
|
|
$newList[$keys[$i]] = $data[$keys[$i]];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$data = $newList;
|
||
|
|
}
|
||
|
|
return $data;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Takes in a flat array and returns a nested array
|
||
|
|
*
|
||
|
|
* ### Options:
|
||
|
|
*
|
||
|
|
* - `children` The key name to use in the resultset for children.
|
||
|
|
* - `idPath` The path to a key that identifies each entry. Should be
|
||
|
|
* compatible with Hash::extract(). Defaults to `{n}.$alias.id`
|
||
|
|
* - `parentPath` The path to a key that identifies the parent of each entry.
|
||
|
|
* Should be compatible with Hash::extract(). Defaults to `{n}.$alias.parent_id`
|
||
|
|
* - `root` The id of the desired top-most result.
|
||
|
|
*
|
||
|
|
* @param array $data The data to nest.
|
||
|
|
* @param array $options Options are:
|
||
|
|
* @return array of results, nested
|
||
|
|
* @see Hash::extract()
|
||
|
|
*/
|
||
|
|
public static function nest(array $data, $options = array()) {
|
||
|
|
if (!$data) {
|
||
|
|
return $data;
|
||
|
|
}
|
||
|
|
|
||
|
|
$alias = key(current($data));
|
||
|
|
$options += array(
|
||
|
|
'idPath' => "{n}.$alias.id",
|
||
|
|
'parentPath' => "{n}.$alias.parent_id",
|
||
|
|
'children' => 'children',
|
||
|
|
'root' => null
|
||
|
|
);
|
||
|
|
|
||
|
|
$return = $idMap = array();
|
||
|
|
$ids = self::extract($data, $options['idPath']);
|
||
|
|
|
||
|
|
$idKeys = explode('.', $options['idPath']);
|
||
|
|
array_shift($idKeys);
|
||
|
|
|
||
|
|
$parentKeys = explode('.', $options['parentPath']);
|
||
|
|
array_shift($parentKeys);
|
||
|
|
|
||
|
|
foreach ($data as $result) {
|
||
|
|
$result[$options['children']] = array();
|
||
|
|
|
||
|
|
$id = self::get($result, $idKeys);
|
||
|
|
$parentId = self::get($result, $parentKeys);
|
||
|
|
|
||
|
|
if (isset($idMap[$id][$options['children']])) {
|
||
|
|
$idMap[$id] = array_merge($result, (array)$idMap[$id]);
|
||
|
|
} else {
|
||
|
|
$idMap[$id] = array_merge($result, array($options['children'] => array()));
|
||
|
|
}
|
||
|
|
if (!$parentId || !in_array($parentId, $ids)) {
|
||
|
|
$return[] =& $idMap[$id];
|
||
|
|
} else {
|
||
|
|
$idMap[$parentId][$options['children']][] =& $idMap[$id];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($options['root']) {
|
||
|
|
$root = $options['root'];
|
||
|
|
} else {
|
||
|
|
$root = self::get($return[0], $parentKeys);
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach ($return as $i => $result) {
|
||
|
|
$id = self::get($result, $idKeys);
|
||
|
|
$parentId = self::get($result, $parentKeys);
|
||
|
|
if ($id !== $root && $parentId != $root) {
|
||
|
|
unset($return[$i]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return array_values($return);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|