* Copyright 2005-2008, Cake Software Foundation, Inc. * 1785 E. Sahara Avenue, Suite 490-204 * Las Vegas, Nevada 89104 * * Licensed under The MIT License * Redistributions of files must retain the above copyright notice. * * @filesource * @copyright Copyright 2005-2008, Cake Software Foundation, Inc. * @link http://www.cakefoundation.org/projects/info/cakephp CakePHP(tm) Project * @package cake * @subpackage cake.cake.libs * @since CakePHP(tm) v 1.2.0 * @version $Revision$ * @modifiedby $LastChangedBy$ * @lastmodified $Date$ * @license http://www.opensource.org/licenses/mit-license.php The MIT License */ /** * Class used for manipulation of arrays. * * Long description for class * * @package cake * @subpackage cake.cake.libs */ class Set extends Object { /** * Value of the Set object. * * @var array * @access public */ var $value = array(); /** * Constructor. Defaults to an empty array. * * @access public */ function __construct() { if (func_num_args() == 1 && is_array(func_get_arg(0))) { $this->value = func_get_arg(0); } else { $this->value = func_get_args(); } } /** * Returns the contents of the Set object * * @return array * @access public */ function &get() { return $this->value; } /** * This function can be thought of as a hybrid between PHP's array_merge and array_merge_recursive. The difference * to the two is that if an array key contains another array then the function behaves recursive (unlike array_merge) * but does not do if for keys containing strings (unlike array_merge_recursive). See the unit test for more information. * * Note: This function will work with an unlimited amount of arguments and typecasts non-array parameters into arrays. * * @param array $arr1 Array to be merged * @param array $arr2 Array to merge with * @return array Merged array * @access public */ function merge($arr1, $arr2 = null) { $args = func_get_args(); if (is_a($this, 'set')) { $backtrace = debug_backtrace(); $previousCall = strtolower($backtrace[1]['class'].'::'.$backtrace[1]['function']); if ($previousCall != 'set::merge') { $r =& $this->value; array_unshift($args, null); } } if (!isset($r)) { $r = (array)current($args); } while (($arg = next($args)) !== false) { if (is_a($arg, 'set')) { $arg = $arg->get(); } foreach ((array)$arg as $key => $val) { if (is_array($val) && isset($r[$key]) && is_array($r[$key])) { $r[$key] = Set::merge($r[$key], $val); } elseif (is_int($key)) { $r[] = $val; } else { $r[$key] = $val; } } } return $r; } /** * Filters empty elements out of a route array, excluding '0'. * * @param mixed $var Either an array to filter, or value when in callback * @param boolean $isArray Force to tell $var is an array when $var is empty * @return mixed Either filtered array, or true/false when in callback * @access public */ function filter($var, $isArray = false) { if (is_array($var) && (!empty($var) || $isArray)) { return array_filter($var, array('Set', 'filter')); } else { if ($var === 0 || $var === '0' || !empty($var)) { return true; } else { return false; } } } /** * Pushes the differences in $array2 onto the end of $array * * @param mixed $array Original array * @param mixed $array2 Differences to push * @return array Combined array * @access public */ function pushDiff($array = null, $array2 = null) { if ($array2 !== null && is_array($array2)) { foreach ($array2 as $key => $value) { if (!array_key_exists($key, $array)) { $array[$key] = $value; } else { if (is_array($value)) { $array[$key] = Set::pushDiff($array[$key], $array2[$key]); } } } return $array; } if (!isset($this->value)) { $this->value = array(); } $this->value = Set::pushDiff($this->value, Set::__array($array)); return $this->value; } /** * Maps the contents of the Set object to an object hierarchy. * Maintains numeric keys as arrays of objects * * @param string $class A class name of the type of object to map to * @param string $tmp A temporary class name used as $class if $class is an array * @return object Hierarchical object * @access public */ function map($class = 'stdClass', $tmp = 'stdClass') { if (is_array($class)) { $val = $class; $class = $tmp; } elseif (is_a($this, 'set')) { $val = $this->get(); } if (empty($val) || $val == null) { return null; } return Set::__map($val, $class); } /** * Get the array value of $array. If $array is null, it will return * the current array Set holds. If it is an object of type Set, it * will return its value. If it is another object, its object variables. * If it is anything else but an array, it will return an array whose first * element is $array. * * @param mixed $array Data from where to get the array. * @return array Array from $array. * @access private */ function __array($array) { if ($array == null) { $array = $this->value; } elseif (is_object($array) && (is_a($array, 'set'))) { $array = $array->get(); } elseif (is_object($array)) { $array = get_object_vars($array); } elseif (!is_array($array)) { $array = array($array); } return $array; } /** * Maps the given value as an object. If $value is an object, * it returns $value. Otherwise it maps $value as an object of * type $class, and if primary assign _name_ $key on first array. * If $value is not empty, it will be used to set properties of * returned object (recursively). If $key is numeric will maintain array * structure * * @param mixed $value Value to map * @param string $class Class name * @param boolean $primary whether to assign first array key as the _name_ * @return mixed Mapped object * @access private */ function __map(&$array, $class, $primary = false) { if ($class === true) { $out = new stdClass; } else { $out = new $class; } if (is_array($array)) { $keys = array_keys($array); foreach ($array as $key => $value) { if($keys[0] === $key && $class !== true) { $primary = true; } if (is_numeric($key)) { if (is_object($out)) { $out = get_object_vars($out); } $out[$key] = Set::__map($value, $class, true); } elseif ($primary === true && is_array($value)) { $out->_name_ = $key; $primary = false; foreach($value as $key2 => $value2) { $out->{$key2} = Set::__map($value2, true); } } else { $out->{$key} = Set::__map($value, $class); } } } else { $out = $array; } return $out; } /** * Checks to see if all the values in the array are numeric * * @param array $array The array to check. If null, the value of the current Set object * @return boolean true if values are numeric, false otherwise * @access public */ function numeric($array = null) { if ($array == null && (is_a($this, 'set') || is_a($this, 'Set'))) { $array = $this->get(); } if ($array == range(0, count($array) - 1)) { return true; } $numeric = true; $keys = array_keys($array); $count = count($keys); for ($i = 0; $i < $count; $i++) { if (!is_numeric($array[$keys[$i]])) { $numeric = false; break; } } return $numeric; } /** * Return a value from an array list if the key exists. * * If a comma separated $list is passed arrays are numeric with the key of the first being 0 * $list = 'no, yes' would translate to $list = array(0 => 'no', 1 => 'yes'); * * If an array is used, keys can be strings example: array('no' => 0, 'yes' => 1); * * $list defaults to 0 = no 1 = yes if param is not passed * * @param mixed $select Key in $list to return * @param mixed $list can be an array or a comma-separated list. * @return string the value of the array key or null if no match * @access public */ function enum($select, $list = null) { if (empty($list) && is_a($this, 'Set')) { $list = $this->get(); } elseif (empty($list)) { $list = array('no', 'yes'); } $return = null; $list = Set::normalize($list, false); if (array_key_exists($select, $list)) { $return = $list[$select]; } return $return; } /** * Returns a series of values extracted from an array, formatted in a format string. * * @param array $data Source array from which to extract the data * @param string $format Format string into which values will be inserted, see sprintf() * @param array $keys An array containing one or more Set::extract()-style key paths * @return array An array of strings extracted from $keys and formatted with $format * @access public */ function format($data, $format, $keys) { $extracted = array(); $count = count($keys); if (!$count) { return; } for ($i = 0; $i < $count; $i++) { $extracted[] = Set::extract($data, $keys[$i]); } $out = array(); $data = $extracted; $count = count($data[0]); if (preg_match_all('/\{([0-9]+)\}/msi', $format, $keys2) && isset($keys2[1])) { $keys = $keys2[1]; $format = preg_split('/\{([0-9]+)\}/msi', $format); $count2 = count($format); for ($j = 0; $j < $count; $j++) { $formatted = ''; for ($i = 0; $i <= $count2; $i++) { if (isset($format[$i])) { $formatted .= $format[$i]; } if (isset($keys[$i]) && isset($data[$keys[$i]][$j])) { $formatted .= $data[$keys[$i]][$j]; } } $out[] = $formatted; } } else { $count2 = count($data); for ($j = 0; $j < $count; $j++) { $args = array(); for ($i = 0; $i < $count2; $i++) { if (isset($data[$i][$j])) { $args[] = $data[$i][$j]; } } $out[] = vsprintf($format, $args); } } return $out; } /** * Gets a value from an array or object that is contained in a given path using an array path syntax, i.e.: * "{n}.Person.{[a-z]+}" - Where "{n}" represents a numeric key, "Person" represents a string literal, * and "{[a-z]+}" (i.e. any string literal enclosed in brackets besides {n} and {s}) is interpreted as * a regular expression. * * @param array $data Array from where to extract * @param mixed $path As an array, or as a dot-separated string. * @return array Extracted data * @access public */ function extract($data, $path = null) { if ($path === null && is_a($this, 'set')) { $path = $data; $data = $this->get(); } if (is_object($data)) { $data = get_object_vars($data); } if (!is_array($data)) { return $data; } if (!is_array($path)) { $path = String::tokenize($path, '.', '{', '}'); } $tmp = array(); if (!is_array($path) || empty($path)) { return null; } foreach ($path as $i => $key) { if (is_numeric($key) && intval($key) > 0 || $key == '0') { if (isset($data[intval($key)])) { $data = $data[intval($key)]; } else { return null; } } elseif ($key == '{n}') { foreach ($data as $j => $val) { if (is_int($j)) { $tmpPath = array_slice($path, $i + 1); if (empty($tmpPath)) { $tmp[] = $val; } else { $tmp[] = Set::extract($val, $tmpPath); } } } return $tmp; } elseif ($key == '{s}') { foreach ($data as $j => $val) { if (is_string($j)) { $tmpPath = array_slice($path, $i + 1); if (empty($tmpPath)) { $tmp[] = $val; } else { $tmp[] = Set::extract($val, $tmpPath); } } } return $tmp; } elseif (false !== strpos($key,'{') && false !== strpos($key,'}')) { $pattern = substr($key, 1, -1); foreach ($data as $j => $val) { if (preg_match('/^'.$pattern.'/s', $j) !== 0) { $tmpPath = array_slice($path, $i + 1); if (empty($tmpPath)) { $tmp[$j] = $val; } else { $tmp[$j] = Set::extract($val, $tmpPath); } } } return $tmp; } else { if (isset($data[$key])) { $data = $data[$key]; } else { return null; } } } return $data; } /** * Inserts $data into an array as defined by $path. * * @param mixed $list Where to insert into * @param mixed $path A dot-separated string. * @param array $data Data to insert * @return array * @access public */ function insert($list, $path, $data = null) { if (empty($data) && is_a($this, 'Set')) { $data = $path; $path = $list; $list =& $this->get(); } if (!is_array($path)) { $path = explode('.', $path); } $_list =& $list; foreach ($path as $i => $key) { if (is_numeric($key) && intval($key) > 0 || $key == '0') { $key = intval($key); } if ($i == count($path) - 1) { $_list[$key] = $data; } else { if (!isset($_list[$key])) { $_list[$key] = array(); } $_list =& $_list[$key]; } } return $list; } /** * Removes an element from a Set or array as defined by $path. * * @param mixed $list From where to remove * @param mixed $path A dot-separated string. * @return array Array with $path removed from its value * @access public */ function remove($list, $path = null) { if (empty($path) && is_a($this, 'Set')) { $path = $list; $list =& $this->get(); } if (!is_array($path)) { $path = explode('.', $path); } $_list =& $list; foreach ($path as $i => $key) { if (is_numeric($key) && intval($key) > 0 || $key == '0') { $key = intval($key); } if ($i == count($path) - 1) { unset($_list[$key]); } else { if (!isset($_list[$key])) { return $list; } $_list =& $_list[$key]; } } if (is_a($this, 'Set')) { $this->value = $list; return $this; } else { return $list; } } /** * Checks if a particular path is set in an array * * @param mixed $data Data to check on * @param mixed $path A dot-separated string. * @return boolean true if path is found, false otherwise * @access public */ function check($data, $path = null) { if (empty($path) && is_a($this, 'Set')) { $path = $data; $data = $this->get(); } if (!is_array($path)) { $path = explode('.', $path); } foreach ($path as $i => $key) { if (is_numeric($key) && intval($key) > 0 || $key == '0') { $key = intval($key); } if ($i == count($path) - 1) { return (is_array($data) && array_key_exists($key, $data)); } else { if (!is_array($data) || !array_key_exists($key, $data)) { return false; } $data =& $data[$key]; } } return true; } /** * Computes the difference between a Set and an array, two Sets, or two arrays * * @param mixed $val1 First value * @param mixed $val2 Second value * @return array Computed difference * @access public */ function diff($val1, $val2 = null) { if ($val2 == null && (is_a($this, 'set') || is_a($this, 'Set'))) { $val2 = $val1; $val1 = $this->get(); } if (is_object($val2) && (is_a($val2, 'set') || is_a($val2, 'Set'))) { $val2 = $val2->get(); } $out = array(); if (empty($val1)) { return (array)$val2; } elseif (empty($val2)) { return (array)$val1; } foreach ($val1 as $key => $val) { if (array_key_exists($key, $val2) && $val2[$key] != $val) { $out[$key] = $val; } elseif (!array_key_exists($key, $val2)) { $out[$key] = $val; } unset($val2[$key]); } foreach ($val2 as $key => $val) { if (!array_key_exists($key, $out)) { $out[$key] = $val; } } return $out; } /** * Determines if two Sets or arrays are equal * * @param array $val1 First value * @param array $val2 Second value * @return boolean true if they are equal, false otherwise * @access public */ function isEqual($val1, $val2 = null) { if ($val2 == null && (is_a($this, 'set') || is_a($this, 'Set'))) { $val2 = $val1; $val1 = $this->get(); } return ($val1 == $val2); } /** * Determines if one Set or array contains the exact keys and values of another. * * @param array $val1 First value * @param array $val2 Second value * @return boolean true if $val1 contains $val2, false otherwise * @access public */ function contains($val1, $val2 = null) { if ($val2 == null && is_a($this, 'set')) { $val2 = $val1; $val1 = $this->get(); } elseif ($val2 != null && is_object($val2) && is_a($val2, 'set')) { $val2 = $val2->get(); } foreach ($val2 as $key => $val) { if (is_numeric($key)) { if (!in_array($val, $val1)) { return false; } } else { if (!isset($val1[$key]) || $val1[$key] != $val) { return false; } } } return true; } /** * Counts the dimensions of an array. If $all is set to false (which is the default) it will * only consider the dimension of the first element in the array. * * @param array $array Array to count dimensions on * @param boolean $all Set to true to count the dimension considering all elements in array * @param integer $count Start the dimension count at this number * @return integer The number of dimensions in $array * @access public */ function countDim($array = null, $all = false, $count = 0) { if ($array === null) { $array = $this->get(); } elseif (is_object($array) && is_a($array, 'set')) { $array = $array->get(); } if ($all) { $depth = array($count); if (is_array($array) && reset($array) !== false) { foreach ($array as $value) { $depth[] = Set::countDim($value, true, $count + 1); } } $return = max($depth); } else { if (is_array(reset($array))) { $return = Set::countDim(reset($array)) + 1; } else { $return = 1; } } return $return; } /** * Normalizes a string or array list. * * @param mixed $list List to normalize * @param boolean $assoc If true, $list will be converted to an associative array * @param string $sep If $list is a string, it will be split into an array with $sep * @param boolean $trim If true, separated strings will be trimmed * @return array * @access public */ function normalize($list, $assoc = true, $sep = ',', $trim = true) { if (is_string($list)) { $list = explode($sep, $list); if ($trim) { $list = array_map('trim', $list); } if ($assoc) { return Set::normalize($list); } } elseif (is_array($list)) { $keys = array_keys($list); $count = count($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])) { $newList[$list[$keys[$i]]] = null; } else { $newList[$keys[$i]] = $list[$keys[$i]]; } } $list = $newList; } } return $list; } /** * Creates an associative array using a $path1 as the path to build its keys, and optionally * $path2 as path to get the values. If $path2 is not specified, all values will be initialized * to null (useful for Set::merge). You can optionally group the values by what is obtained when * following the path specified in $groupPath. * * @param array $data Array from where to extract keys and values * @param mixed $path1 As an array, or as a dot-separated string. * @param mixed $path2 As an array, or as a dot-separated string. * @param string $groupPath As an array, or as a dot-separated string. * @return array Combined array * @access public */ function combine($data, $path1 = null, $path2 = null, $groupPath = null) { if (is_a($this, 'set') && is_string($data) && is_string($path1) && is_string($path2)) { $groupPath = $path2; $path2 = $path1; $path1 = $data; $data = $this->get(); } elseif (is_a($this, 'set') && is_string($data) && empty($path2)) { $path2 = $path1; $path1 = $data; $data = $this->get(); } if (is_object($data)) { $data = get_object_vars($data); } if (is_array($path1)) { $format = array_shift($path1); $keys = Set::format($data, $format, $path1); } else { $keys = Set::extract($data, $path1); } if (!empty($path2) && is_array($path2)) { $format = array_shift($path2); $vals = Set::format($data, $format, $path2); } elseif (!empty($path2)) { $vals = Set::extract($data, $path2); } else { $count = count($keys); for ($i = 0; $i < $count; $i++) { $vals[$i] = null; } } if ($groupPath != null) { $group = Set::extract($data, $groupPath); if (!empty($group)) { $c = count($keys); for ($i = 0; $i < $c; $i++) { if (!isset($group[$i])) { $group[$i] = 0; } if (!isset($out[$group[$i]])) { $out[$group[$i]] = array(); } $out[$group[$i]][$keys[$i]] = $vals[$i]; } return $out; } } return array_combine($keys, $vals); } /** * Converts an object into an array * * @param object $object * @return array */ function reverse($object) { $out = array(); if (is_a($object, 'XmlNode')) { if (isset($object->name) && isset($object->children)) { if ($object->name === '#document' && !empty($object->children)) { $out = Set::reverse($object->children[0]); } else { $children = array(); if (!empty($object->children)) { foreach ($object->children as $child) { $childName = Inflector::camelize($child->name); if (count($child->children) > 1 && isset($child->name)) { $children[$childName][] = Set::reverse($child); } elseif ($child->name == '#text') { $object->value = $child->value; } else { $children = array_merge($children, Set::reverse($child)); } } } $camelName = Inflector::camelize($object->name); if (!empty($object->attributes) && !empty($children)) { $out[$camelName] = array_merge($object->attributes, $children); } elseif (!empty($object->attributes) && !empty($object->value)) { $out[$object->name] = array_merge($object->attributes, array('value' => $object->value)); } elseif (!empty($object->attributes)) { $out[$camelName] = $object->attributes; } elseif (!empty($children) && (isset($children[$childName][0]) || isset($children[$child->name][0]))) { $out = $children; } elseif (!empty($children)) { $out[$camelName] = $children; } elseif (!empty($object->value)) { $out[$object->name] = $object->value; } } } } else { if (is_object($object)) { $keys = get_object_vars($object); if (isset($keys['_name_'])) { $identity = $keys['_name_']; unset($keys['_name_']); } $new = array(); foreach ($keys as $key => $value) { if (is_array($value)) { $new[$key] = (array)Set::reverse($value); } else { $new[$key] = Set::reverse($value); } } if (isset($identity)) { $out[$identity] = $new; } else { $out = $new; } } elseif (is_array($object)) { foreach ($object as $key => $value) { $out[$key] = Set::reverse($value); } } else { $out = $object; } } return $out; } /** * Flattens an array for sorting * * @param array $results * @param string $key * @return array * @access private */ function __flatten($results, $key = null) { $stack = array(); foreach ($results as $k => $r) { if (is_array($r)) { $stack = am($stack, Set::__flatten($r, $k)); } else { if (!$key) { $key = $k; } $stack[] = array('id' => $key, 'value' => $r); } } return $stack; } /** * Sorts an array by any value, determined by a Set-compatible path * * @param array $data * @param string $path A Set-compatible path to the array value * @param string $dir asc/desc * @return array */ function sort($data, $path, $dir) { $result = Set::__flatten(Set::extract($data, $path)); list($keys, $values) = array(Set::extract($result, '{n}.id'), Set::extract($result, '{n}.value')); if ($dir == 'asc') { $dir = SORT_ASC; } elseif ($dir == 'desc') { $dir = SORT_DESC; } array_multisort($values, $dir, $keys, $dir); $sorted = array(); foreach ($keys as $k) { $sorted[] = $data[$k]; } return $sorted; } } ?>