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<?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
function __($item=null) {
$__ = new __;
if(func_num_args() > 0) $__->_wrapped = $item;
return $__;
}
// Underscore.php
class __ {
// Start the chain
private $_chained = false; // Are we in a chain?
public function chain($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;
}
}
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