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<?php
/* SVN FILE: $Id$ */
/**
* Backend for helpers.
*
* Internal methods for the Helpers.
*
* PHP versions 4 and 5
*
* CakePHP(tm) : Rapid Development Framework (http://www.cakephp.org)
* Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @filesource
* @copyright Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
* @link http://www.cakefoundation.org/projects/info/cakephp CakePHP(tm) Project
* @package cake
* @subpackage cake.cake.libs.view
* @since CakePHP(tm) v 0.2.9
* @version $Revision$
* @modifiedby $LastChangedBy$
* @lastmodified $Date$
* @license http://www.opensource.org/licenses/mit-license.php The MIT License
*/
/**
* Included libs
*/
App::import('Core', 'Overloadable');
/**
* Backend for helpers.
*
* Long description for class
*
* @package cake
* @subpackage cake.cake.libs.view
*/
class Helper extends Overloadable {
/**
* List of helpers used by this helper
*
* @var array
*/
var $helpers = null;
/**
* Base URL
*
* @var string
*/
var $base = null;
/**
* Webroot path
*
* @var string
*/
var $webroot = null;
/**
* Theme name
*
* @var string
*/
var $themeWeb = null;
/**
* URL to current action.
*
* @var string
*/
var $here = null;
/**
* Parameter array.
*
* @var array
*/
var $params = array();
/**
* Current action.
*
* @var string
*/
var $action = null;
/**
* Plugin path
*
* @var string
*/
var $plugin = null;
/**
* POST data for models
*
* @var array
*/
var $data = null;
/**
* List of named arguments
*
* @var array
*/
var $namedArgs = null;
/**
* URL argument separator character
*
* @var string
*/
var $argSeparator = null;
/**
* Contains model validation errors of form post-backs
*
* @access public
* @var array
*/
var $validationErrors = null;
/**
* Holds tag templates.
*
* @access public
* @var array
*/
var $tags = array();
/**
* Holds the content to be cleaned.
*
* @access private
* @var mixed
*/
var $__tainted = null;
/**
* Holds the cleaned content.
*
* @access private
* @var mixed
*/
var $__cleaned = null;
/**
* Default overload methods
*
* @access protected
*/
function get__($name) {}
function set__($name, $value) {}
function call__($method, $params) {
trigger_error(sprintf(__('Method %1$s::%2$s does not exist', true), get_class($this), $method), E_USER_WARNING);
}
/**
* Parses tag templates into $this->tags.
*
* @param $name file name
* @return array merged tags from config/$name.php
*/
function loadConfig($name = 'tags') {
if (file_exists(CONFIGS . $name .'.php')) {
require(CONFIGS . $name .'.php');
if (isset($tags)) {
$this->tags = array_merge($this->tags, $tags);
}
}
return $this->tags;
}
/**
* Finds URL for specified action.
*
* Returns an URL pointing to a combination of controller and action. Param
* $url can be:
* + Empty - the method will find adress to actuall controller/action.
* + '/' - the method will find base URL of application.
* + A combination of controller/action - the method will find url for it.
*
* @param mixed $url Cake-relative URL, like "/products/edit/92" or "/presidents/elect/4"
* or an array specifying any of the following: 'controller', 'action',
* and/or 'plugin', in addition to named arguments (keyed array elements),
* and standard URL arguments (indexed array elements)
* @param boolean $full If true, the full base URL will be prepended to the result
* @return string Full translated URL with base path.
*/
function url($url = null, $full = false) {
return h(Router::url($url, $full));
}
/**
* Checks if a file exists when theme is used, if no file is found default location is returned
*
* @param string $file
* @return string $webPath web path to file.
*/
function webroot($file) {
$webPath = "{$this->webroot}" . $file;
if (!empty($this->themeWeb)) {
$os = env('OS');
if (!empty($os) && strpos($os, 'Windows') !== false) {
if (strpos(WWW_ROOT . $this->themeWeb . $file, '\\') !== false) {
$path = str_replace('/', '\\', WWW_ROOT . $this->themeWeb . $file);
}
} else {
$path = WWW_ROOT . $this->themeWeb . $file;
}
if (file_exists($path)) {
$webPath = "{$this->webroot}" . $this->themeWeb . $file;
}
}
if (strpos($webPath, '//') !== false) {
return str_replace('//', '/', $webPath);
}
return $webPath;
}
/**
* Adds a timestamp to a file based resource based on the value of `Asset.timestamp` in
* Configure. If Asset.timestamp is true and debug > 0, or Asset.timestamp == 'force'
* a timestamp will be added.
*
* @param string $path The file path to timestamp, the path must be inside WWW_ROOT
* @return string Path with a timestamp added, or not.
**/
function assetTimestamp($path) {
$timestampEnabled = (
(Configure::read('Asset.timestamp') === true && Configure::read() > 0) ||
Configure::read('Asset.timestamp') === 'force'
);
if (strpos($path, '?') === false && $timestampEnabled) {
$path .= '?' . @filemtime(WWW_ROOT . str_replace('/', DS, $path));
}
return $path;
}
/**
* Used to remove harmful tags from content
*
* @param mixed $output
* @return cleaned content for output
* @access public
*/
function clean($output) {
$this->__reset();
if (empty($output)) {
return null;
}
if (is_array($output)) {
foreach ($output as $key => $value) {
$return[$key] = $this->clean($value);
}
return $return;
}
$this->__tainted = $output;
$this->__clean();
return $this->__cleaned;
}
/**
* Returns a space-delimited string with items of the $options array. If a
* key of $options array happens to be one of:
*
* - 'compact'
* - 'checked'
* - 'declare'
* - 'readonly'
* - 'disabled'
* - 'selected'
* - 'defer'
* - 'ismap'
* - 'nohref'
* - 'noshade'
* - 'nowrap'
* - 'multiple'
* - 'noresize'
*
* And its value is one of:
*
* - 1
* - true
* - 'true'
*
* Then the value will be reset to be identical with key's name.
* If the value is not one of these 3, the parameter is not output.
*
* 'escape' is a special option in that it controls the conversion of
* attributes to their html-entity encoded equivalents. Set to false to disable html-encoding.
*
* @param array $options Array of options.
* @param array $exclude Array of options to be excluded, the options here will not be part of the return.
* @param string $insertBefore String to be inserted before options.
* @param string $insertAfter String to be inserted ater options.
* @return string Composed attributes.
*/
function _parseAttributes($options, $exclude = null, $insertBefore = ' ', $insertAfter = null) {
if (is_array($options)) {
$options = array_merge(array('escape' => true), $options);
if (!is_array($exclude)) {
$exclude = array();
}
$keys = array_diff(array_keys($options), array_merge((array)$exclude, array('escape')));
$values = array_intersect_key(array_values($options), $keys);
$escape = $options['escape'];
$attributes = array();
foreach ($keys as $index => $key) {
$attributes[] = $this->__formatAttribute($key, $values[$index], $escape);
}
$out = implode(' ', $attributes);
} else {
$out = $options;
}
return $out ? $insertBefore . $out . $insertAfter : '';
}
/**
* Formats an individual attribute, and returns the string value of the composed attribute.
*
* @param string $key The name of the attribute to create
* @param string $value The value of the attribute to create.
* @return string The composed attribute.
* @access private
*/
function __formatAttribute($key, $value, $escape = true) {
$attribute = '';
$attributeFormat = '%s="%s"';
$minimizedAttributes = array('compact', 'checked', 'declare', 'readonly', 'disabled', 'selected', 'defer', 'ismap', 'nohref', 'noshade', 'nowrap', 'multiple', 'noresize');
if (is_array($value)) {
$value = '';
}
if (in_array($key, $minimizedAttributes)) {
if ($value === 1 || $value === true || $value === 'true' || $value == $key) {
$attribute = sprintf($attributeFormat, $key, $key);
}
} else {
$attribute = sprintf($attributeFormat, $key, ($escape ? h($value) : $value));
}
return $attribute;
}
/**
* Sets this helper's model and field properties to the dot-separated value-pair in $entity.
*
* @param mixed $entity A field name, like "ModelName.fieldName" or "ModelName.ID.fieldName"
* @param boolean $setScope Sets the view scope to the model specified in $tagValue
* @return void
*/
function setEntity($entity, $setScope = false) {
$view =& ClassRegistry::getObject('view');
if ($setScope) {
$view->modelScope = false;
} elseif (join('.', $view->entity()) == $entity) {
return;
}
if ($entity === null) {
$view->model = null;
$view->association = null;
$view->modelId = null;
$view->modelScope = false;
return;
}
$model = $view->model;
$sameScope = $hasField = false;
$parts = array_values(Set::filter(explode('.', $entity), true));
if (empty($parts)) {
return;
}
$count = count($parts);
if ($count === 1) {
$sameScope = true;
} else {
if (is_numeric($parts[0])) {
$sameScope = true;
}
$reverse = array_reverse($parts);
$field = array_shift($reverse);
while(!empty($reverse)) {
$subject = array_shift($reverse);
if (is_numeric($subject)) {
continue;
}
if (ClassRegistry::isKeySet($subject)) {
$model = $subject;
break;
}
}
}
if (ClassRegistry::isKeySet($model)) {
$ModelObj =& ClassRegistry::getObject($model);
for ($i = 0; $i < $count; $i++) {
if ($ModelObj->hasField($parts[$i]) || array_key_exists($parts[$i], $ModelObj->validate)) {
$hasField = $i;
if ($hasField === 0 || ($hasField === 1 && is_numeric($parts[0]))) {
$sameScope = true;
}
break;
}
}
if ($sameScope === true && in_array($parts[0], array_keys($ModelObj->hasAndBelongsToMany))) {
$sameScope = false;
}
}
if (!$view->association && $parts[0] == $view->field && $view->field != $view->model) {
array_unshift($parts, $model);
$hasField = true;
}
$view->field = $view->modelId = $view->fieldSuffix = $view->association = null;
switch (count($parts)) {
case 1:
if ($view->modelScope === false) {
$view->model = $parts[0];
} else {
$view->field = $parts[0];
if ($sameScope === false) {
$view->association = $parts[0];
}
}
break;
case 2:
if ($view->modelScope === false) {
list($view->model, $view->field) = $parts;
} elseif ($sameScope === true && $hasField === 0) {
list($view->field, $view->fieldSuffix) = $parts;
} elseif ($sameScope === true && $hasField === 1) {
list($view->modelId, $view->field) = $parts;
} else {
list($view->association, $view->field) = $parts;
}
break;
case 3:
if ($sameScope === true && $hasField === 1) {
list($view->modelId, $view->field, $view->fieldSuffix) = $parts;
} elseif ($hasField === 2) {
list($view->association, $view->modelId, $view->field) = $parts;
} else {
list($view->association, $view->field, $view->fieldSuffix) = $parts;
}
break;
case 4:
if ($parts[0] === $view->model) {
list($view->model, $view->modelId, $view->field, $view->fieldSuffix) = $parts;
} else {
list($view->association, $view->modelId, $view->field, $view->fieldSuffix) = $parts;
}
break;
default:
$reverse = array_reverse($parts);
if ($hasField) {
$view->field = $field;
if (!is_numeric($reverse[1]) && $reverse[1] != $model) {
$view->field = $reverse[1];
$view->fieldSuffix = $field;
}
}
if (is_numeric($parts[0])) {
$view->modelId = $parts[0];
} elseif ($view->model == $parts[0] && is_numeric($parts[1])) {
$view->modelId = $parts[1];
}
$view->association = $model;
break;
}
if (!isset($view->model) || empty($view->model)) {
$view->model = $view->association;
$view->association = null;
} elseif ($view->model === $view->association) {
$view->association = null;
}
if ($setScope) {
$view->modelScope = true;
}
}
/**
* Gets the currently-used model of the rendering context.
*
* @return string
*/
function model() {
$view =& ClassRegistry::getObject('view');
if (!empty($view->association)) {
return $view->association;
} else {
return $view->model;
}
}
/**
* Gets the ID of the currently-used model of the rendering context.
*
* @return mixed
*/
function modelID() {
$view =& ClassRegistry::getObject('view');
return $view->modelId;
}
/**
* Gets the currently-used model field of the rendering context.
*
* @return string
*/
function field() {
$view =& ClassRegistry::getObject('view');
return $view->field;
}
/**
* Returns false if given FORM field has no errors. Otherwise it returns the constant set in the array Model->validationErrors.
*
* @param string $model Model name as string
* @param string $field Fieldname as string
* @param integer $modelID Unique index identifying this record within the form
* @return boolean True on errors.
*/
function tagIsInvalid($model = null, $field = null, $modelID = null) {
foreach (array('model', 'field', 'modelID') as $key) {
if (empty(${$key})) {
${$key} = $this->{$key}();
}
}
$view =& ClassRegistry::getObject('view');
$errors = $this->validationErrors;
if ($view->model !== $model && isset($errors[$view->model][$model])) {
$errors = $errors[$view->model];
}
if (!isset($modelID)) {
return empty($errors[$model][$field]) ? 0 : $errors[$model][$field];
} else {
return empty($errors[$model][$modelID][$field]) ? 0 : $errors[$model][$modelID][$field];
}
}
/**
* Generates a DOM ID for the selected element, if one is not set.
*
* @param mixed $options
* @param string $id
* @return mixed
*/
function domId($options = null, $id = 'id') {
$view =& ClassRegistry::getObject('view');
if (is_array($options) && array_key_exists($id, $options) && $options[$id] === null) {
unset($options[$id]);
return $options;
} elseif (!is_array($options) && $options !== null) {
$this->setEntity($options);
return $this->domId();
}
$dom = $this->model() . $this->modelID() . Inflector::camelize($view->field) . Inflector::camelize($view->fieldSuffix);
if (is_array($options) && !array_key_exists($id, $options)) {
$options[$id] = $dom;
} elseif ($options === null) {
return $dom;
}
return $options;
}
/**
* Gets the input field name for the current tag
*
* @param array $options
* @param string $key
* @return array
*/
function __name($options = array(), $field = null, $key = 'name') {
$view =& ClassRegistry::getObject('view');
if ($options === null) {
$options = array();
} elseif (is_string($options)) {
$field = $options;
$options = 0;
}
if (!empty($field)) {
$this->setEntity($field);
}
if (is_array($options) && array_key_exists($key, $options)) {
return $options;
}
switch ($field) {
case '_method':
$name = $field;
break;
default:
$name = 'data[' . join('][', $view->entity()) . ']';
break;
}
if (is_array($options)) {
$options[$key] = $name;
return $options;
} else {
return $name;
}
}
/**
* Gets the data for the current tag
*
* @param array $options
* @param string $key
* @return array
* @access public
*/
function value($options = array(), $field = null, $key = 'value') {
if ($options === null) {
$options = array();
} elseif (is_string($options)) {
$field = $options;
$options = 0;
}
if (!empty($field)) {
$this->setEntity($field);
}
if (is_array($options) && isset($options[$key])) {
return $options;
}
$result = null;
$modelName = $this->model();
$fieldName = $this->field();
$modelID = $this->modelID();
if (is_null($fieldName)) {
$fieldName = $modelName;
$modelName = null;
}
if (isset($this->data[$fieldName]) && $modelName === null) {
$result = $this->data[$fieldName];
} elseif (isset($this->data[$modelName][$fieldName])) {
$result = $this->data[$modelName][$fieldName];
} elseif (isset($this->data[$fieldName]) && is_array($this->data[$fieldName])) {
if (ClassRegistry::isKeySet($fieldName)) {
$model =& ClassRegistry::getObject($fieldName);
$result = $this->__selectedArray($this->data[$fieldName], $model->primaryKey);
}
} elseif (isset($this->data[$modelName][$modelID][$fieldName])) {
$result = $this->data[$modelName][$modelID][$fieldName];
}
if (is_array($result)) {
$view =& ClassRegistry::getObject('view');
if (array_key_exists($view->fieldSuffix, $result)) {
$result = $result[$view->fieldSuffix];
}
}
if (is_array($options)) {
if (empty($result) && isset($options['default'])) {
$result = $options['default'];
}
unset($options['default']);
}
if (is_array($options)) {
$options[$key] = $result;
return $options;
} else {
return $result;
}
}
/**
* Sets the defaults for an input tag
*
* @param array $options
* @param string $key
* @return array
* @access protected
*/
function _initInputField($field, $options = array()) {
if ($field !== null) {
$this->setEntity($field);
}
$options = (array)$options;
$options = $this->__name($options);
$options = $this->value($options);
$options = $this->domId($options);
if ($this->tagIsInvalid()) {
$options = $this->addClass($options, 'form-error');
}
return $options;
}
/**
* Adds the given class to the element options
*
* @param array $options
* @param string $class
* @param string $key
* @return array
*/
function addClass($options = array(), $class = null, $key = 'class') {
if (isset($options[$key]) && trim($options[$key]) != '') {
$options[$key] .= ' ' . $class;
} else {
$options[$key] = $class;
}
return $options;
}
/**
* Returns a string generated by a helper method
*
* This method can be overridden in subclasses to do generalized output post-processing
*
* @param string $str String to be output.
* @return string
*/
function output($str) {
return $str;
}
/**
* Before render callback. Overridden in subclasses.
*
*/
function beforeRender() {
}
/**
* After render callback. Overridden in subclasses.
*
*/
function afterRender() {
}
/**
* Before layout callback. Overridden in subclasses.
*
*/
function beforeLayout() {
}
/**
* After layout callback. Overridden in subclasses.
*
*/
function afterLayout() {
}
/**
* Transforms a recordset from a hasAndBelongsToMany association to a list of selected
* options for a multiple select element
*
* @param mixed $data
* @param string $key
* @return array
* @access private
*/
function __selectedArray($data, $key = 'id') {
if (!is_array($data)) {
$model = $data;
if (!empty($this->data[$model][$model])) {
return $this->data[$model][$model];
}
if (!empty($this->data[$model])) {
$data = $this->data[$model];
}
}
$array = array();
if (!empty($data)) {
foreach ($data as $var) {
$array[$var[$key]] = $var[$key];
}
}
return $array;
}
/**
* Resets the vars used by Helper::clean() to null
*
* @access private
*/
function __reset() {
$this->__tainted = null;
$this->__cleaned = null;
}
/**
* Removes harmful content from output
*
* @access private
*/
function __clean() {
if (get_magic_quotes_gpc()) {
$this->__cleaned = stripslashes($this->__tainted);
} else {
$this->__cleaned = $this->__tainted;
}
$this->__cleaned = str_replace(array("&amp;", "&lt;", "&gt;"), array("&amp;amp;", "&amp;lt;", "&amp;gt;"), $this->__cleaned);
$this->__cleaned = preg_replace('#(&\#*\w+)[\x00-\x20]+;#u', "$1;", $this->__cleaned);
$this->__cleaned = preg_replace('#(&\#x*)([0-9A-F]+);*#iu', "$1$2;", $this->__cleaned);
$this->__cleaned = html_entity_decode($this->__cleaned, ENT_COMPAT, "UTF-8");
$this->__cleaned = preg_replace('#(<[^>]+[\x00-\x20\"\'\/])(on|xmlns)[^>]*>#iUu', "$1>", $this->__cleaned);
$this->__cleaned = preg_replace('#([a-z]*)[\x00-\x20]*=[\x00-\x20]*([\`\'\"]*)[\\x00-\x20]*j[\x00-\x20]*a[\x00-\x20]*v[\x00-\x20]*a[\x00-\x20]*s[\x00-\x20]*c[\x00-\x20]*r[\x00-\x20]*i[\x00-\x20]*p[\x00-\x20]*t[\x00-\x20]*:#iUu', '$1=$2nojavascript...', $this->__cleaned);
$this->__cleaned = preg_replace('#([a-z]*)[\x00-\x20]*=([\'\"]*)[\x00-\x20]*v[\x00-\x20]*b[\x00-\x20]*s[\x00-\x20]*c[\x00-\x20]*r[\x00-\x20]*i[\x00-\x20]*p[\x00-\x20]*t[\x00-\x20]*:#iUu', '$1=$2novbscript...', $this->__cleaned);
$this->__cleaned = preg_replace('#([a-z]*)[\x00-\x20]*=*([\'\"]*)[\x00-\x20]*-moz-binding[\x00-\x20]*:#iUu','$1=$2nomozbinding...', $this->__cleaned);
$this->__cleaned = preg_replace('#([a-z]*)[\x00-\x20]*=([\'\"]*)[\x00-\x20]*data[\x00-\x20]*:#Uu', '$1=$2nodata...', $this->__cleaned);
$this->__cleaned = preg_replace('#(<[^>]+)style[\x00-\x20]*=[\x00-\x20]*([\`\'\"]*).*expression[\x00-\x20]*\([^>]*>#iU', "$1>", $this->__cleaned);
$this->__cleaned = preg_replace('#(<[^>]+)style[\x00-\x20]*=[\x00-\x20]*([\`\'\"]*).*behaviour[\x00-\x20]*\([^>]*>#iU', "$1>", $this->__cleaned);
$this->__cleaned = preg_replace('#(<[^>]+)style[\x00-\x20]*=[\x00-\x20]*([\`\'\"]*).*s[\x00-\x20]*c[\x00-\x20]*r[\x00-\x20]*i[\x00-\x20]*p[\x00-\x20]*t[\x00-\x20]*:*[^>]*>#iUu', "$1>", $this->__cleaned);
$this->__cleaned = preg_replace('#</*\w+:\w[^>]*>#i', "", $this->__cleaned);
do {
$oldstring = $this->__cleaned;
$this->__cleaned = preg_replace('#</*(applet|meta|xml|blink|link|style|script|embed|object|iframe|frame|frameset|ilayer|layer|bgsound|title|base)[^>]*>#i', "", $this->__cleaned);
} while ($oldstring != $this->__cleaned);
$this->__cleaned = str_replace(array("&amp;", "&lt;", "&gt;"), array("&amp;amp;", "&amp;lt;", "&amp;gt;"), $this->__cleaned);
}
}
?>
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