/underscore.php
PHP | 1135 lines | 1 code | 2 blank | 1132 comment | 0 complexity | dc944fc37b75243dc17fd3686362762e MD5 | raw file
Possible License(s): MIT
- <?php
- /**
- * Underscore.php v1.3.1
- * Copyright (c) 2011 Brian Haveri
- * Underscore.php is licensed under the MIT license
- * Underscore.php was inspired by and borrowed from Underscore.js
- * For docs, license, tests, and downloads, see: http://brianhaveri.github.com/Underscore.php
- */
- /**
- * Returns an instance of __ for OO-style calls
- *
- * @return __
- * /
- function __($item=null) {
- $__ = new __;
- if(func_num_args() > 0) $__->_wrapped = $item;
- return $__;
- }
- /**
- * Defines __ "class"
- *
- * /
- class __ {
-
- /**
- *
- * @return something
- * /
- private $_chained = false; // Are we in a chain?
- /**
- *
- * @return something
- * /
- public function chain($item=null) {
- list($item) = self::_wrapArgs(func_get_args(), 1);
-
- $__ = (isset($this) && isset($this->_chained) && $this->_chained) ? $this : __($item);
- $__->_chained = true;
- return $__;
- }
-
-
- // End the chain
- public function value() {
- return (isset($this)) ? $this->_wrapped : null;
- }
-
-
- // Invoke the iterator on each item in the collection
- public function each($collection=null, $iterator=null) {
- list($collection, $iterator) = self::_wrapArgs(func_get_args(), 2);
-
- if(is_null($collection)) return self::_wrap(null);
-
- $collection = (array) self::_collection($collection);
- if(count($collection) === 0) return self::_wrap(null);
-
- foreach($collection as $k=>$v) {
- call_user_func($iterator, $v, $k, $collection);
- }
- return self::_wrap(null);
- }
-
-
- // Return an array of values by mapping each item through the iterator
- // map alias: collect
- public function collect($collection=null, $iterator=null) { return self::map($collection, $iterator); }
- public function map($collection=null, $iterator=null) {
- list($collection, $iterator) = self::_wrapArgs(func_get_args(), 2);
-
- if(is_null($collection)) return self::_wrap(array());
-
- $collection = (array) self::_collection($collection);
- if(count($collection) === 0) self::_wrap(array());
-
- $return = array();
- foreach($collection as $k=>$v) {
- $return[] = call_user_func($iterator, $v, $k, $collection);
- }
- return self::_wrap($return);
- }
-
-
- // Reduce a collection to a single value
- // reduce aliases: foldl, inject
- public function foldl($collection=null, $iterator=null, $memo=null) { return self::reduce($collection, $iterator, $memo); }
- public function inject($collection=null, $iterator=null, $memo=null) { return self::reduce($collection, $iterator, $memo); }
- public function reduce($collection=null, $iterator=null, $memo=null) {
- list($collection, $iterator, $memo) = self::_wrapArgs(func_get_args(), 3);
-
- if(!is_object($collection) && !is_array($collection)) {
- if(is_null($memo)) throw new Exception('Invalid object');
- else return self::_wrap($memo);
- }
-
- return self::_wrap(array_reduce($collection, $iterator, $memo));
- }
-
-
- // Right-associative version of reduce
- // reduceRight alias: foldr
- public function foldr($collection=null, $iterator=null, $memo=null) { return self::reduceRight($collection, $iterator, $memo); }
- public function reduceRight($collection=null, $iterator=null, $memo=null) {
- list($collection, $iterator, $memo) = self::_wrapArgs(func_get_args(), 3);
-
- if(!is_object($collection) && !is_array($collection)) {
- if(is_null($memo)) throw new Exception('Invalid object');
- else return self::_wrap($memo);
- }
-
- krsort($collection);
-
- $__ = new self;
- return self::_wrap($__->reduce($collection, $iterator, $memo));
- }
-
-
- // Extract an array of values for a given property
- public function pluck($collection=null, $key=null) {
- list($collection, $key) = self::_wrapArgs(func_get_args(), 2);
-
- $collection = (array) self::_collection($collection);
-
- $return = array();
- foreach($collection as $item) {
- foreach($item as $k=>$v) {
- if($k === $key) $return[] = $v;
- }
- }
- return self::_wrap($return);
- }
-
-
- // Does the collection contain this value?
- // includ alias: contains
- public function contains($collection=null, $val=null) { return self::includ($collection, $val); }
- public function includ($collection=null, $val=null) {
- list($collection, $val) = self::_wrapArgs(func_get_args(), 2);
-
- $collection = (array) self::_collection($collection);
-
- return self::_wrap((array_search($val, $collection, true) !== false));
- }
-
-
- // Invoke the named function over each item in the collection, optionally passing arguments to the function
- public function invoke($collection=null, $function_name=null, $arguments=null) {
- $args = self::_wrapArgs(func_get_args(), 2);
- $__ = new self;
- list($collection, $function_name) = $__->first($args, 2);
- $arguments = $__->rest(func_get_args(), 2);
-
- // If passed an array or string, return an array
- // If passed an object, return an object
- $is_obj = is_object($collection);
- $result = (empty($arguments)) ? array_map($function_name, (array) $collection) : array_map($function_name, (array) $collection, $arguments);
- if($is_obj) $result = (object) $result;
-
- return self::_wrap($result);
- }
-
-
- // Does any values in the collection meet the iterator's truth test?
- // any alias: some
- public function some($collection=null, $iterator=null) { return self::any($collection, $iterator); }
- public function any($collection=null, $iterator=null) {
- list($collection, $iterator) = self::_wrapArgs(func_get_args(), 2);
-
- $collection = self::_collection($collection);
-
- $__ = new self;
- if(!is_null($iterator)) $collection = $__->map($collection, $iterator);
- if(count($collection) === 0) return self::_wrap(false);
-
- return self::_wrap(is_int(array_search(true, $collection, false)));
- }
-
-
- // Do all values in the collection meet the iterator's truth test?
- // all alias: every
- public function every($collection=null, $iterator=null) { return self::all($collection, $iterator); }
- public function all($collection=null, $iterator=null) {
- list($collection, $iterator) = self::_wrapArgs(func_get_args(), 2);
-
- $collection = self::_collection($collection);
-
- $__ = new self;
- if(!is_null($iterator)) $collection = $__->map($collection, $iterator);
- $collection = (array) $collection;
- if(count($collection) === 0) return true;
-
- return self::_wrap(is_bool(array_search(false, $collection, false)));
- }
-
-
- // Return an array of values that pass the truth iterator test
- // filter alias: select
- public function select($collection=null, $iterator=null) { return self::filter($collection, $iterator); }
- public function filter($collection=null, $iterator=null) {
- list($collection, $iterator) = self::_wrapArgs(func_get_args(), 2);
-
- $collection = self::_collection($collection);
-
- $return = array();
- foreach($collection as $val) {
- if(call_user_func($iterator, $val)) $return[] = $val;
- }
- return self::_wrap($return);
- }
-
-
- // Return an array where the items failing the truth test are removed
- public function reject($collection=null, $iterator=null) {
- list($collection, $iterator) = self::_wrapArgs(func_get_args(), 2);
-
- $collection = self::_collection($collection);
-
- $return = array();
- foreach($collection as $val) {
- if(!call_user_func($iterator, $val)) $return[] = $val;
- }
- return self::_wrap($return);
- }
-
-
- // Return the value of the first item passing the truth iterator test
- // find alias: detect
- public function detect($collection=null, $iterator=null) { return self::find($collection, $iterator); }
- public function find($collection=null, $iterator=null) {
- list($collection, $iterator) = self::_wrapArgs(func_get_args(), 2);
-
- $collection = self::_collection($collection);
-
- foreach($collection as $val) {
- if(call_user_func($iterator, $val)) return $val;
- }
- return self::_wrap(false);
- }
-
-
- // How many items are in this collection?
- public function size($collection=null) {
- list($collection) = self::_wrapArgs(func_get_args(), 1);
-
- $collection = self::_collection($collection);
-
- return self::_wrap(count((array) $collection));
- }
-
-
- // Get the first element of an array. Passing n returns the first n elements.
- // first alias: head
- public function head($collection=null, $n=null) { return self::first($collection, $n); }
- public function first($collection=null, $n=null) {
- list($collection, $n) = self::_wrapArgs(func_get_args(), 2);
-
- $collection = self::_collection($collection);
-
- if($n === 0) return self::_wrap(array());
- if(is_null($n)) return self::_wrap(current(array_splice($collection, 0, 1, true)));
- return self::_wrap(array_splice($collection, 0, $n, true));
- }
-
-
- // Get the rest of the array elements. Passing n returns from that index onward.
- public function tail($collection=null, $index=null) { return self::rest($collection, $index); }
- public function rest($collection=null, $index=null) {
- list($collection, $index) = self::_wrapArgs(func_get_args(), 2);
- if(is_null($index)) $index = 1;
-
- $collection = self::_collection($collection);
-
- return self::_wrap(array_splice($collection, $index));
- }
-
-
- // Return everything but the last array element. Passing n excludes the last n elements.
- public function initial($collection=null, $n=null) {
- list($collection, $n) = self::_wrapArgs(func_get_args(), 2);
-
- $collection = (array) self::_collection($collection);
-
- if(is_null($n)) $n = 1;
- $first_index = count($collection) - $n;
- $__ = new self;
- return self::_wrap($__->first($collection, $first_index));
- }
-
-
- // Get the last element from an array. Passing n returns the last n elements.
- public function last($collection=null, $n=null) {
- list($collection, $n) = self::_wrapArgs(func_get_args(), 2);
- $collection = self::_collection($collection);
-
- if($n === 0) $result = array();
- elseif($n === 1 || is_null($n)) $result = array_pop($collection);
- else {
- $__ = new self;
- $result = $__->rest($collection, -$n);
- }
-
- return self::_wrap($result);
- }
-
-
- // Return a copy of the array with falsy values removed
- public function compact($collection=null) {
- list($collection) = self::_wrapArgs(func_get_args(), 1);
-
- $collection = self::_collection($collection);
-
- $__ = new self;
- return self::_wrap($__->select($collection, function($val) {
- return (bool) $val;
- }));
- }
-
-
- // Flattens a multidimensional array
- public function flatten($collection=null, $shallow=null) {
- list($collection, $shallow) = self::_wrapArgs(func_get_args(), 2);
-
- $collection = self::_collection($collection);
-
- $return = array();
- if(count($collection) > 0) {
- foreach($collection as $item) {
- if(is_array($item)) {
- $__ = new self;
- $return = array_merge($return, ($shallow) ? $item : $__->flatten($item));
- }
- else $return[] = $item;
- }
- }
- return self::_wrap($return);
- }
-
-
- // Returns a copy of the array with all instances of val removed
- public function without($collection=null, $val=null) {
- $args = self::_wrapArgs(func_get_args(), 1);
- $collection = $args[0];
- $collection = self::_collection($collection);
-
- $num_args = count($args);
- if($num_args === 1) return self::_wrap($collection);
- if(count($collection) === 0) return self::_wrap($collection);
-
- $__ = new self;
- $removes = $__->rest($args);
- foreach($removes as $remove) {
- $remove_keys = array_keys($collection, $remove, true);
- if(count($remove_keys) > 0) {
- foreach($remove_keys as $key) {
- unset($collection[$key]);
- }
- }
- }
- return self::_wrap($collection);
- }
-
-
- // Return an array of the unique values
- // uniq alias: unique
- public function unique($collection=null, $is_sorted=null, $iterator=null) { return self::uniq($collection, $is_sorted, $iterator); }
- public function uniq($collection=null, $is_sorted=null, $iterator=null) {
- list($collection, $is_sorted, $iterator) = self::_wrapArgs(func_get_args(), 3);
-
- $collection = self::_collection($collection);
-
- $return = array();
- if(count($collection) === 0) return self::_wrap($return);
-
- $calculated = array();
- foreach($collection as $item) {
- $val = (!is_null($iterator)) ? $iterator($item) : $item;
- if(is_bool(array_search($val, $calculated, true))) {
- $calculated[] = $val;
- $return[] = $item;
- }
- }
-
- return self::_wrap($return);
- }
-
-
- // Returns an array containing the intersection of all the arrays
- public function intersection($array=null) {
- $arrays = self::_wrapArgs(func_get_args(), 1);
-
- if(count($arrays) === 1) return self::_wrap($array);
-
- $__ = new self;
- $return = $__->first($arrays);
- foreach($__->rest($arrays) as $next) {
- if(!$__->isArray($next)) $next = str_split((string) $next);
-
- $return = array_intersect($return, $next);
- }
-
- return self::_wrap(array_values($return));
- }
-
-
- // Merge together multiple arrays
- public function union($array=null) {
- $arrays = self::_wrapArgs(func_get_args(), 1);
-
- if(count($arrays) === 1) return self::_wrap($array);
-
- $__ = new self;
- return self::_wrap($__->flatten(array_values(array_unique(call_user_func_array('array_merge', $arrays)))));
- }
-
-
- // Get the difference between two arrays
- public function difference($array_one=null, $array_two=null) {
- $arrays = self::_wrapArgs(func_get_args(), 1);
-
- return self::_wrap(array_values(call_user_func_array('array_diff', $arrays)));
- }
-
-
- // Get the index of the first match
- public function indexOf($collection=null, $item=null) {
- list($collection, $item) = self::_wrapArgs(func_get_args(), 2);
-
- $collection = self::_collection($collection);
-
- $key = array_search($item, $collection, true);
- return self::_wrap((is_bool($key)) ? -1 : $key);
- }
-
-
- // Get the index of the last match
- public function lastIndexOf($collection=null, $item=null) {
- list($collection, $item) = self::_wrapArgs(func_get_args(), 2);
-
- $collection = self::_collection($collection);
-
- krsort($collection);
- $__ = new self;
- return self::_wrap($__->indexOf($collection, $item));
- }
-
-
- // Returns an array of integers from start to stop (exclusive) by step
- public function range($stop=null) {
- $args = self::_wrapArgs(func_get_args(), 1);
-
- $__ = new self;
- $args = $__->reject($args, function($val) {
- return is_null($val);
- });
-
- $num_args = count($args);
- switch($num_args) {
- case 1:
- list($start, $stop, $step) = array(0, $args[0], 1);
- break;
- case 2:
- list($start, $stop, $step) = array($args[0], $args[1], 1);
- if($stop < $start) return self::_wrap(array());
- break;
- default:
- list($start, $stop, $step) = array($args[0], $args[1], $args[2]);
- if($step > 0 && $step > $stop) return self::_wrap(array($start));
- }
- $results = range($start, $stop, $step);
-
- // Switch inclusive to exclusive
- if($step > 0 && $__->last($results) >= $stop) array_pop($results);
- elseif($step < 0 && $__->last($results) <= $stop) array_pop($results);
-
- return self::_wrap($results);
- }
-
-
- // Merges arrays
- public function zip($array=null) {
- $arrays = self::_wrapArgs(func_get_args());
- $num_arrays = count($arrays);
- if($num_arrays === 1) return self::_wrap($array);
-
- $__ = new self;
- $num_return_arrays = $__->max($__->map($arrays, function($array) {
- return count($array);
- }));
- $return_arrays = $__->range($num_return_arrays);
- foreach($return_arrays as $k=>$v) {
- if(!is_array($return_arrays[$k])) $return_arrays[$k] = array();
-
- foreach($arrays as $a=>$array) {
- $return_arrays[$k][$a] = array_key_exists($k, $array) ? $array[$k] : null;
- }
- }
-
- return self::_wrap($return_arrays);
- }
-
-
- // Get the max value in the collection
- public function max($collection=null, $iterator=null) {
- list($collection, $iterator) = self::_wrapArgs(func_get_args(), 2);
-
- if(is_null($iterator)) return self::_wrap(max($collection));
-
- $results = array();
- foreach($collection as $k=>$item) {
- $results[$k] = $iterator($item);
- }
- arsort($results);
- $__ = new self;
- $first_key = $__->first(array_keys($results));
- return $collection[$first_key];
- }
-
-
- // Get the min value in the collection
- public function min($collection=null, $iterator=null) {
- list($collection, $iterator) = self::_wrapArgs(func_get_args(), 2);
-
- if(is_null($iterator)) return self::_wrap(min($collection));
-
- $results = array();
- foreach($collection as $k=>$item) {
- $results[$k] = $iterator($item);
- }
- asort($results);
- $__ = new self;
- $first_key = $__->first(array_keys($results));
- return self::_wrap($collection[$first_key]);
- }
-
-
- // Sort the collection by return values from the iterator
- public function sortBy($collection=null, $iterator=null) {
- list($collection, $iterator) = self::_wrapArgs(func_get_args(), 2);
-
- $results = array();
- foreach($collection as $k=>$item) {
- $results[$k] = $iterator($item);
- }
- asort($results);
- foreach($results as $k=>$v) {
- $results[$k] = $collection[$k];
- }
- return self::_wrap(array_values($results));
- }
-
-
- // Group the collection by return values from the iterator
- public function groupBy($collection=null, $iterator=null) {
- list($collection, $iterator) = self::_wrapArgs(func_get_args(), 2);
-
- $result = array();
- $collection = (array) $collection;
- foreach($collection as $k=>$v) {
- $key = (is_callable($iterator)) ? $iterator($v, $k) : $v[$iterator];
- if(!array_key_exists($key, $result)) $result[$key] = array();
- $result[$key][] = $v;
- }
- return $result;
- }
-
-
- // Returns the index at which the value should be inserted into the sorted collection
- public function sortedIndex($collection=null, $value=null, $iterator=null) {
- list($collection, $value, $iterator) = self::_wrapArgs(func_get_args(), 3);
-
- $collection = (array) self::_collection($collection);
- $__ = new self;
-
- $calculated_value = (!is_null($iterator)) ? $iterator($value) : $value;
-
- while(count($collection) > 1) {
- $midpoint = floor(count($collection) / 2);
- $midpoint_values = array_slice($collection, $midpoint, 1);
- $midpoint_value = $midpoint_values[0];
- $midpoint_calculated_value = (!is_null($iterator)) ? $iterator($midpoint_value) : $midpoint_value;
-
- $collection = ($calculated_value < $midpoint_calculated_value) ? array_slice($collection, 0, $midpoint, true) : array_slice($collection, $midpoint, null, true);
- }
- $keys = array_keys($collection);
-
- return self::_wrap(current($keys) + 1);
- }
-
- // Shuffle the array
- public function shuffle($collection=null) {
- list($collection) = self::_wrapArgs(func_get_args(), 1);
-
- $collection = (array) self::_collection($collection);
- shuffle($collection);
-
- return self::_wrap($collection);
- }
-
-
- // Return the collection as an array
- public function toArray($collection=null) {
- return (array) $collection;
- }
-
-
- // Get the collection's keys
- public function keys($collection=null) {
- list($collection) = self::_wrapArgs(func_get_args(), 1);
-
- if(!is_object($collection) && !is_array($collection)) throw new Exception('Invalid object');
-
- return self::_wrap(array_keys((array) $collection));
- }
-
-
- // Get the collection's values
- public function values($collection=null) {
- list($collection) = self::_wrapArgs(func_get_args(), 1);
-
- return self::_wrap(array_values((array) $collection));
- }
-
-
- // Copy all properties from the source objects into the destination object
- public function extend($object=null) {
- $args = self::_wrapArgs(func_get_args(), 1);
-
- $num_args = func_num_args();
- if($num_args === 1) return $object;
-
- $is_object = is_object($object);
- $array = (array) $object;
- $__ = new self;
- $extensions = $__->rest(func_get_args());
- foreach($extensions as $extension) {
- $extension = (array) $extension;
- $array = array_merge($array, $extension);
- }
- return self::_wrap(($is_object) ? (object) $array : $array);
- }
-
-
- // Returns the object with any missing values filled in using the defaults.
- public function defaults($object=null) {
- $args = self::_wrapArgs(func_get_args(), 1);
- list($object) = $args;
-
- $num_args = count($args);
- if($num_args === 1) return $object;
-
- $is_object = is_object($object);
- $array = (array) $object;
- $__ = new self;
- $extensions = $__->rest($args);
- foreach($extensions as $extension) {
- $extension = (array) $extension;
- $array = array_merge($extension, $array);
- }
- return self::_wrap(($is_object) ? (object) $array : $array);
- }
-
-
- // Get the names of functions available to the object
- // functions alias: methods
- public function methods($object=null) { return self::functions($object); }
- public function functions($object=null) {
- list($object) = self::_wrapArgs(func_get_args(), 1);
-
- return self::_wrap(get_class_methods(get_class($object)));
- }
-
-
- // Returns a shallow copy of the object
- public function clon(&$object=null) {
- list($object) = self::_wrapArgs(func_get_args(), 1);
-
- $clone = null;
- if(is_array($object)) $clone = (array) clone (object) $object;
- elseif(!is_object($object)) $clone = $object;
- elseif(!$clone) $clone = clone $object;
-
- // shallow copy object
- if(is_object($clone) && count($clone) > 0) {
- foreach($clone as $k=>$v) {
- if(is_array($v) || is_object($v)) $clone->$k =& $object->$k;
- }
- }
-
- // shallow copy array
- elseif(is_array($clone) && count($clone) > 0) {
- foreach($clone as $k=>$v) {
- if(is_array($v) || is_object($v)) $clone[$k] =& $object[$k];
- }
- }
- return self::_wrap($clone);
- }
-
-
- // Invokes the interceptor on the object, then returns the object
- public function tap($object=null, $interceptor=null) {
- list($object, $interceptor) = self::_wrapArgs(func_get_args(), 2);
-
- $interceptor($object);
- return self::_wrap($object);
- }
-
-
- // Does the given key exist?
- public function has($collection=null, $key=null) {
- list($collection, $key) = self::_wrapArgs(func_get_args(), 2);
-
- $collection = (array) self::_collection($collection);
-
- return self::_wrap(array_key_exists($key, $collection));
- }
-
-
- // Are these items equal?
- public function isEqual($a=null, $b=null) {
- list($a, $b) = self::_wrapArgs(func_get_args(), 2);
-
- if(isset($this) && isset($this->_chained) && $this->_chained) $a =& $this;
-
- if($a === $b) return self::_wrap(true);
- if(gettype($a) !== gettype($b)) return self::_wrap(false);
- if(is_callable($a) !== is_callable($b)) return self::_wrap(false);
-
- if($a == $b) return self::_wrap(true);
-
- // Objects and arrays compared by values
- if(is_object($a) || is_array($a)) {
-
- // Do either implement isEqual()?
- if(is_object($a) && isset($a->isEqual)) return self::_wrap($a->isEqual($b));
- if(is_object($b) && isset($b->isEqual)) return self::_wrap($b->isEqual($a));
- if(is_array($a) && array_key_exists('isEqual', $a)) return self::_wrap($a['isEqual']($b));
- if(is_array($b) && array_key_exists('isEqual', $b)) return self::_wrap($b['isEqual']($a));
-
- if(count($a) !== count($b)) return self::_wrap(false);
-
- $__ = new self;
- $keys_equal = $__->isEqual($__->keys($a), $__->keys($b));
- $values_equal = $__->isEqual($__->values($a), $__->values($b));
- return self::_wrap($keys_equal && $values_equal);
- }
-
- return self::_wrap(false);
- }
-
-
- // Is this item empty?
- public function isEmpty($item=null) {
- list($item) = self::_wrapArgs(func_get_args(), 1);
-
- return self::_wrap(is_array($item) || is_object($item)) ? !((bool) count((array) $item)) : (!(bool) $item);
- }
-
-
- // Is this item an object?
- public function isObject($item=null) {
- list($item) = self::_wrapArgs(func_get_args(), 1);
- return self::_wrap(is_object($item));
- }
-
-
- // Is this item an array?
- public function isArray($item=null) {
- list($item) = self::_wrapArgs(func_get_args(), 1);
- return self::_wrap(is_array($item));
- }
-
-
- // Is this item a string?
- public function isString($item=null) {
- list($item) = self::_wrapArgs(func_get_args(), 1);
- return self::_wrap(is_string($item));
- }
-
-
- // Is this item a number?
- public function isNumber($item=null) {
- list($item) = self::_wrapArgs(func_get_args(), 1);
- return self::_wrap((is_int($item) || is_float($item)) && !is_nan($item) && !is_infinite($item));
- }
-
-
- // Is this item a bool?
- public function isBoolean($item=null) {
- list($item) = self::_wrapArgs(func_get_args(), 1);
- return self::_wrap(is_bool($item));
- }
-
-
- // Is this item a function (by type, not by name)?
- public function isFunction($item=null) {
- list($item) = self::_wrapArgs(func_get_args(), 1);
- return self::_wrap(is_object($item) && is_callable($item));
- }
-
-
- // Is this item an instance of DateTime?
- public function isDate($item=null) {
- list($item) = self::_wrapArgs(func_get_args(), 1);
- return self::_wrap(is_object($item) && get_class($item) === 'DateTime');
- }
-
-
- // Is this item a NaN value?
- public function isNaN($item=null) {
- list($item) = self::_wrapArgs(func_get_args(), 1);
- return self::_wrap(is_nan($item));
- }
-
-
- // Returns the same value passed as the argument
- public function identity() {
- $args = self::_wrapArgs(func_get_args(), 1);
-
- if(is_array($args)) return self::_wrap($args[0]);
-
- return self::_wrap(function($x) {
- return $x;
- });
- }
-
-
- // Generate a globally unique id, optionally prefixed
- public $_uniqueId = -1;
- public function uniqueId($prefix=null) {
- list($prefix) = self::_wrapArgs(func_get_args(), 1);
-
- $_instance = self::getInstance();
- $_instance->_uniqueId++;
-
- return (is_null($prefix)) ? self::_wrap($_instance->_uniqueId) : self::_wrap($prefix . $_instance->_uniqueId);
- }
-
-
- // Invokes the iterator n times
- public function times($n=null, $iterator=null) {
- list($n, $iterator) = self::_wrapArgs(func_get_args(), 2);
- if(is_null($n)) $n = 0;
-
- for($i=0; $i<$n; $i++) $iterator($i);
- return self::_wrap(null);
- }
-
-
- // Extend the class with your own functions
- private $_mixins = array();
- public function mixin($functions=null) {
- list($functions) = self::_wrapArgs(func_get_args(), 1);
-
- $mixins =& self::getInstance()->_mixins;
- foreach($functions as $name=>$function) {
- $mixins[$name] = $function;
- }
- return self::_wrap(null);
- }
-
-
- // Allows extending methods in static context
- public static function __callStatic($name, $arguments) {
- $mixins =& self::getInstance()->_mixins;
- return call_user_func_array($mixins[$name], $arguments);
- }
-
- // Allows extending methods in non-static context
- public function __call($name, $arguments) {
- $mixins =& self::getInstance()->_mixins;
- $arguments = self::_wrapArgs($arguments);
- return call_user_func_array($mixins[$name], $arguments);
- }
-
-
- // Temporary PHP open and close tags used within templates
- // Allows for normal processing of templates even when
- // the developer uses PHP open or close tags for interpolation or evaluation
- const TEMPLATE_OPEN_TAG = '760e7dab2836853c63805033e514668301fa9c47';
- const TEMPLATE_CLOSE_TAG= 'd228a8fa36bd7db108b01eddfb03a30899987a2b';
-
- const TEMPLATE_DEFAULT_EVALUATE = '/<%([\s\S]+?)%>/';
- const TEMPLATE_DEFAULT_INTERPOLATE= '/<%=([\s\S]+?)%>/';
- const TEMPLATE_DEFAULT_ESCAPE = '/<%-([\s\S]+?)%>/';
- public $_template_settings = array(
- 'evaluate' => self::TEMPLATE_DEFAULT_EVALUATE,
- 'interpolate' => self::TEMPLATE_DEFAULT_INTERPOLATE,
- 'escape' => self::TEMPLATE_DEFAULT_ESCAPE
- );
-
- // Set template settings
- public function templateSettings($settings=null) {
- $_template_settings =& self::getInstance()->_template_settings;
-
- if(is_null($settings)) {
- $_template_settings = array(
- 'evaluate' => self::TEMPLATE_DEFAULT_EVALUATE,
- 'interpolate' => self::TEMPLATE_DEFAULT_INTERPOLATE,
- 'escape' => self::TEMPLATE_DEFAULT_ESCAPE
- );
- return true;
- }
-
- foreach($settings as $k=>$v) {
- if(!array_key_exists($k, $_template_settings)) continue;
-
- $_template_settings[$k] = $v;
- }
- return true;
- }
-
-
- // Compile templates into functions that can be evaluated for rendering
- public function template($code=null, $context=null) {
- list($code, $context) = self::_wrapArgs(func_get_args(), 2);
- $class_name = __CLASS__;
-
- $return = self::_wrap(function($context=null) use ($code, $class_name) {
- $ts = $class_name::getInstance()->_template_settings;
-
- // Wrap escaped, interpolated, and evaluated blocks inside PHP tags
- extract((array) $context);
- preg_match_all($ts['escape'], $code, $vars, PREG_SET_ORDER);
- if(count($vars) > 0) {
- foreach($vars as $var) {
- $echo = $class_name::TEMPLATE_OPEN_TAG . ' echo htmlentities(' . trim($var[1]) . '); ' . $class_name::TEMPLATE_CLOSE_TAG;
- $code = str_replace($var[0], $echo, $code);
- }
- }
- preg_match_all($ts['interpolate'], $code, $vars, PREG_SET_ORDER);
- if(count($vars) > 0) {
- foreach($vars as $var) {
- $echo = $class_name::TEMPLATE_OPEN_TAG . ' echo ' . trim($var[1]) . '; ' . $class_name::TEMPLATE_CLOSE_TAG;
- $code = str_replace($var[0], $echo, $code);
- }
- }
- preg_match_all($ts['evaluate'], $code, $vars, PREG_SET_ORDER);
- if(count($vars) > 0) {
- foreach($vars as $var) {
- $echo = $class_name::TEMPLATE_OPEN_TAG . trim($var[1]) . $class_name::TEMPLATE_CLOSE_TAG;
- $code = str_replace($var[0], $echo, $code);
- }
- }
- $code = str_replace($class_name::TEMPLATE_OPEN_TAG, '<?php ', $code);
- $code = str_replace($class_name::TEMPLATE_CLOSE_TAG, '?>', $code);
-
- // Use the output buffer to grab the return value
- $code = 'ob_start(); extract($context); ?>' . $code . '<?php return ob_get_clean();';
-
- $func = create_function('$context', $code);
- return $func((array) $context);
- });
-
- // Return function or call function depending on context
- return self::_wrap(((isset($this) && isset($this->_wrapped) && $this->_wrapped) || !is_null($context)) ? $return($context) : $return);
- }
-
- // Escape
- public function escape($item=null) {
- list($item) = self::_wrapArgs(func_get_args(), 1);
-
- return self::_wrap(htmlentities($item));
- }
-
-
- // Memoizes a function by caching the computed result.
- public $_memoized = array();
- public function memoize($function=null, $hashFunction=null) {
- list($function, $hashFunction) = self::_wrapArgs(func_get_args(), 2);
-
- $_instance = (isset($this) && isset($this->_wrapped)) ? $this : self::getInstance();
-
- return self::_wrap(function() use ($function, &$_instance, $hashFunction) {
-
- // Generate a key based on hashFunction
- $args = func_get_args();
- if(is_null($hashFunction)) $hashFunction = function($function, $args) {
-
- // Try using var_export to identify the function
- return md5(join('_', array(
- var_export($function, true),
- var_export($args, true)
- )));
- };
- $key = $hashFunction($function, $args);
-
- if(!array_key_exists($key, $_instance->_memoized)) {
- $_instance->_memoized[$key] = call_user_func_array($function, $args);
- }
- return $_instance->_memoized[$key];
- });
- }
-
-
- // Throttles a function so that it can only be called once every wait milliseconds
- public $_throttled = array();
- public function throttle($function=null, $wait=null) {
- list($function, $wait) = self::_wrapArgs(func_get_args(), 2);
-
- $_instance = (isset($this) && isset($this->_wrapped)) ? $this : self::getInstance();
-
- return self::_wrap(function() use ($function, $wait, &$_instance) {
-
- // Try using var_export to identify the function
- $key = md5(join('', array(
- var_export($function, true),
- $wait
- )));
-
- $microtime = microtime(true);
- $ready_to_call = (!array_key_exists($key, $_instance->_throttled) || $microtime >= $_instance->_throttled[$key]);
- if($ready_to_call) {
- $next_callable_time = $microtime + ($wait / 1000);
- $_instance->_throttled[$key] = $next_callable_time;
- return call_user_func_array($function, func_get_args());
- }
- });
- }
-
-
- // Creates a version of the function that can only be called once
- public $_onced = array();
- public function once($function=null) {
- list($function) = self::_wrapArgs(func_get_args(), 1);
-
- $_instance = (isset($this) && isset($this->_wrapped)) ? $this : self::getInstance();
-
- return self::_wrap(function() use ($function, &$_instance) {
-
- // Try using var_export to identify the function
- $key = md5(var_export($function, true));
- if(!array_key_exists($key, $_instance->_onced)) {
- $_instance->_onced[$key] = call_user_func_array($function, func_get_args());
- }
-
- return $_instance->_onced[$key];
- });
- }
-
-
- // Wraps the function inside the wrapper function, passing it as the first argument
- public function wrap($function=null, $wrapper=null) {
- list($function, $wrapper) = self::_wrapArgs(func_get_args(), 2);
-
- return self::_wrap(function() use ($wrapper, $function) {
- $args = array_merge(array($function), func_get_args());
- return call_user_func_array($wrapper, $args);
- });
- }
-
-
- // Returns the composition of the functions
- public function compose() {
- $functions = self::_wrapArgs(func_get_args(), 1);
-
- return self::_wrap(function() use ($functions) {
- $args = func_get_args();
- foreach($functions as $function) {
- $args[0] = call_user_func_array($function, $args);
- }
- return $args[0];
- });
- }
-
-
- // Creates a version of the function that will only run after being called count times
- public $_aftered = array();
- public function after($count=null, $function=null) {
- list($count, $function) = self::_wrapArgs(func_get_args(), 2);
-
- $_instance = (isset($this) && isset($this->_wrapped)) ? $this : self::getInstance();
- $key = md5(mt_rand());
-
- $func = function() use ($function, &$_instance, $count, $key) {
- if(!array_key_exists($key, $_instance->_aftered)) $_instance->_aftered[$key] = 0;
- $_instance->_aftered[$key] += 1;
-
- if($_instance->_aftered[$key] >= $count) return call_user_func_array($function, func_get_args());
- };
- return self::_wrap(($count) ? $func : $func());
- }
-
-
- // Singleton
- private static $_instance;
- public function getInstance() {
- if(!isset(self::$_instance)) {
- $c = __CLASS__;
- self::$_instance = new $c;
- }
- return self::$_instance;
- }
-
-
- // All methods should wrap their returns within _wrap
- // because this function understands both OO-style and functional calls
- public $_wrapped; // Value passed from one chained method to the next
- private function _wrap($val) {
- if(isset($this) && isset($this->_chained) && $this->_chained) {
- $this->_wrapped = $val;
- return $this;
- }
- return $val;
- }
-
-
- // All methods should get their arguments from _wrapArgs
- // because this function understands both OO-style and functional calls
- private function _wrapArgs($caller_args, $num_args=null) {
- $num_args = (is_null($num_args)) ? count($caller_args) - 1 : $num_args;
-
- $filled_args = array();
- if(isset($this) && isset($this->_wrapped)) {
- $filled_args[] =& $this->_wrapped;
- }
- if(count($caller_args) > 0) {
- foreach($caller_args as $k=>$v) {
- $filled_args[] = $v;
- }
- }
-
- return array_pad($filled_args, $num_args, null);
- }
-
-
- // Get a collection in a way that supports strings
- private function _collection($collection) {
- return (!is_array($collection) && !is_object($collection)) ? str_split((string) $collection) : $collection;
- }
- }