<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to [email protected] so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Markup
* @subpackage Renderer
* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id$
*/
/**
* @see Zend_Filter_HtmlEntities
*/
require_once 'Zend/Filter/HtmlEntities.php';
/**
* @see Zend_Filter_PregReplace
*/
require_once 'Zend/Filter/PregReplace.php';
/**
* @see Zend_Filter_Callback
*/
require_once 'Zend/Filter/Callback.php';
/**
* @see Zend_Markup_Renderer_RendererAbstract
*/
require_once 'Zend/Markup/Renderer/RendererAbstract.php';
/**
* HTML renderer
*
* @category Zend
* @package Zend_Markup
* @subpackage Renderer
* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Markup_Renderer_Html extends Zend_Markup_Renderer_RendererAbstract
{
/**
* Element groups
*
* @var array
*/
protected $_groups = array(
'block' => array('block', 'inline', 'block-empty', 'inline-empty', 'list'),
'inline' => array('inline', 'inline-empty'),
'list' => array('list-item'),
'list-item' => array('inline', 'inline-empty', 'list'),
'block-empty' => array(),
'inline-empty' => array(),
);
/**
* The current group
*
* @var string
*/
protected $_group = 'block';
/**
* Default attributes
*
* @var array
*/
protected static $_defaultAttributes = array(
'id' => '',
'class' => '',
'style' => '',
'lang' => '',
'title' => ''
);
/**
* Constructor
*
* @param array|Zend_Config $options
*
* @return void
*/
public function __construct($options = array())
{
if ($options instanceof Zend_Config) {
$options = $options->toArray();
}
$this->_pluginLoader = new Zend_Loader_PluginLoader(array(
'Zend_Markup_Renderer_Html' => 'Zend/Markup/Renderer/Html/'
));
if (!isset($options['useDefaultMarkups']) && isset($options['useDefaultTags'])) {
$options['useDefaultMarkups'] = $options['useDefaultTags'];
}
if (isset($options['useDefaultMarkups']) && ($options['useDefaultMarkups'] !== false)) {
$this->_defineDefaultMarkups();
} elseif (!isset($options['useDefaultMarkups'])) {
$this->_defineDefaultMarkups();
}
parent::__construct($options);
}
/**
* Define the default markups
*
* @return void
*/
protected function _defineDefaultMarkups()
{
$this->_markups = array(
'b' => array(
'type' => 10, // self::TYPE_REPLACE | self::TAG_NORMAL
'tag' => 'strong',
'group' => 'inline',
'filter' => true,
),
'u' => array(
'type' => 10,
'tag' => 'span',
'attributes' => array(
'style' => 'text-decoration: underline;',
),
'group' => 'inline',
'filter' => true,
),
'i' => array(
'type' => 10,
'tag' => 'em',
'group' => 'inline',
'filter' => true,
),
'cite' => array(
'type' => 10,
'tag' => 'cite',
'group' => 'inline',
'filter' => true,
),
'del' => array(
'type' => 10,
'tag' => 'del',
'group' => 'inline',
'filter' => true,
),
'ins' => array(
'type' => 10,
'tag' => 'ins',
'group' => 'inline',
'filter' => true,
),
'sub' => array(
'type' => 10,
'tag' => 'sub',
'group' => 'inline',
'filter' => true,
),
'sup' => array(
'type' => 10,
'tag' => 'sup',
'group' => 'inline',
'filter' => true,
),
'span' => array(
'type' => 10,
'tag' => 'span',
'group' => 'inline',
'filter' => true,
),
'acronym' => array(
'type' => 10,
'tag' => 'acronym',
'group' => 'inline',
'filter' => true,
),
// headings
'h1' => array(
'type' => 10,
'tag' => 'h1',
'group' => 'inline',
'filter' => true,
),
'h2' => array(
'type' => 10,
'tag' => 'h2',
'group' => 'inline',
'filter' => true,
),
'h3' => array(
'type' => 10,
'tag' => 'h3',
'group' => 'inline',
'filter' => true,
),
'h4' => array(
'type' => 10,
'tag' => 'h4',
'group' => 'inline',
'filter' => true,
),
'h5' => array(
'type' => 10,
'tag' => 'h5',
'group' => 'inline',
'filter' => true,
),
'h6' => array(
'type' => 10,
'tag' => 'h6',
'group' => 'inline',
'filter' => true,
),
// callback tags
'url' => array(
'type' => 6, // self::TYPE_CALLBACK | self::TAG_NORMAL
'callback' => null,
'group' => 'inline',
'filter' => true,
),
'img' => array(
'type' => 6,
'callback' => null,
'group' => 'inline-empty',
'filter' => true,
),
'code' => array(
'type' => 6,
'callback' => null,
'group' => 'block-empty',
'filter' => false,
),
'p' => array(
'type' => 10,
'tag' => 'p',
'group' => 'block',
'filter' => true,
),
'ignore' => array(
'type' => 10,
'start' => '',
'end' => '',
'group' => 'block-empty',
'filter' => true,
),
'quote' => array(
'type' => 10,
'tag' => 'blockquote',
'group' => 'block',
'filter' => true,
),
'list' => array(
'type' => 6,
'callback' => null,
'group' => 'list',
'filter' => new Zend_Filter_PregReplace('/.*/is', ''),
),
'*' => array(
'type' => 10,
'tag' => 'li',
'group' => 'list-item',
'filter' => true,
),
'hr' => array(
'type' => 9, // self::TYPE_REPLACE | self::TAG_SINGLE
'tag' => 'hr',
'group' => 'block',
'empty' => true,
),
// aliases
'bold' => array(
'type' => 16,
'name' => 'b',
),
'strong' => array(
'type' => 16,
'name' => 'b',
),
'italic' => array(
'type' => 16,
'name' => 'i',
),
'em' => array(
'type' => 16,
'name' => 'i',
),
'emphasized' => array(
'type' => 16,
'name' => 'i',
),
'underline' => array(
'type' => 16,
'name' => 'u',
),
'citation' => array(
'type' => 16,
'name' => 'cite',
),
'deleted' => array(
'type' => 16,
'name' => 'del',
),
'insert' => array(
'type' => 16,
'name' => 'ins',
),
'strike' => array(
'type' => 16,
'name' => 's',
),
's' => array(
'type' => 16,
'name' => 'del',
),
'subscript' => array(
'type' => 16,
'name' => 'sub',
),
'superscript' => array(
'type' => 16,
'name' => 'sup',
),
'a' => array(
'type' => 16,
'name' => 'url',
),
'image' => array(
'type' => 16,
'name' => 'img',
),
'li' => array(
'type' => 16,
'name' => '*',
),
'color' => array(
'type' => 16,
'name' => 'span',
),
);
}
/**
* Add the default filters
*
* @return void
*/
public function addDefaultFilters()
{
$this->_defaultFilter = new Zend_Filter();
$this->_defaultFilter->addFilter(new Zend_Filter_HtmlEntities(array('encoding' => self::getEncoding())));
$this->_defaultFilter->addFilter(new Zend_Filter_Callback('nl2br'));
}
/**
* Execute a replace token
*
* @param Zend_Markup_Token $token
* @param array $markup
* @return string
*/
protected function _executeReplace(Zend_Markup_Token $token, $markup)
{
if (isset($markup['tag'])) {
if (!isset($markup['attributes'])) {
$markup['attributes'] = array();
}
$attrs = self::renderAttributes($token, $markup['attributes']);
return "<{$markup['tag']}{$attrs}>{$this->_render($token)}</{$markup['tag']}>";
}
return parent::_executeReplace($token, $markup);
}
/**
* Execute a single replace token
*
* @param Zend_Markup_Token $token
* @param array $markup
* @return string
*/
protected function _executeSingleReplace(Zend_Markup_Token $token, $markup)
{
if (isset($markup['tag'])) {
if (!isset($markup['attributes'])) {
$markup['attributes'] = array();
}
$attrs = self::renderAttributes($token, $markup['attributes']);
return "<{$markup['tag']}{$attrs} />";
}
return parent::_executeSingleReplace($token, $markup);
}
/**
* Render some attributes
*
* @param Zend_Markup_Token $token
* @param array $attributes
* @return string
*/
public static function renderAttributes(Zend_Markup_Token $token, array $attributes = array())
{
$attributes = array_merge(self::$_defaultAttributes, $attributes);
$return = '';
$tokenAttributes = $token->getAttributes();
// correct style attribute
if (isset($tokenAttributes['style'])) {
$tokenAttributes['style'] = trim($tokenAttributes['style']);
if ($tokenAttributes['style'][strlen($tokenAttributes['style']) - 1] != ';') {
$tokenAttributes['style'] .= ';';
}
} else {
$tokenAttributes['style'] = '';
}
// special treathment for 'align' and 'color' attribute
if (isset($tokenAttributes['align'])) {
$tokenAttributes['style'] .= 'text-align: ' . $tokenAttributes['align'] . ';';
unset($tokenAttributes['align']);
}
if (isset($tokenAttributes['color']) && self::checkColor($tokenAttributes['color'])) {
$tokenAttributes['style'] .= 'color: ' . $tokenAttributes['color'] . ';';
unset($tokenAttributes['color']);
}
/*
* loop through all the available attributes, and check if there is
* a value defined by the token
* if there is no value defined by the token, use the default value or
* don't set the attribute
*/
foreach ($attributes as $attribute => $value) {
if (isset($tokenAttributes[$attribute]) && !empty($tokenAttributes[$attribute])) {
$return .= ' ' . $attribute . '="' . htmlentities($tokenAttributes[$attribute],
ENT_QUOTES,
self::getEncoding()) . '"';
} elseif (!empty($value)) {
$return .= ' ' . $attribute . '="' . htmlentities($value, ENT_QUOTES, self::getEncoding()) . '"';
}
}
return $return;
}
/**
* Check if a color is a valid HTML color
*
* @param string $color
*
* @return bool
*/
public static function checkColor($color)
{
/*
* aqua, black, blue, fuchsia, gray, green, lime, maroon, navy, olive,
* purple, red, silver, teal, white, and yellow.
*/
$colors = array(
'aqua', 'black', 'blue', 'fuchsia', 'gray', 'green', 'lime',
'maroon', 'navy', 'olive', 'purple', 'red', 'silver', 'teal',
'white', 'yellow'
);
if (in_array($color, $colors)) {
return true;
}
if (preg_match('/\#[0-9a-f]{6}/i', $color)) {
return true;
}
return false;
}
/**
* Check if the URI is valid
*
* @param string $uri
*
* @return bool
*/
public static function isValidUri($uri)
{
if (!preg_match('/^([a-z][a-z+\-.]*):/i', $uri, $matches)) {
return false;
}
$scheme = strtolower($matches[1]);
switch ($scheme) {
case 'javascript':
// JavaScript scheme is not allowed for security reason
return false;
case 'http':
case 'https':
case 'ftp':
$components = @parse_url($uri);
if ($components === false) {
return false;
}
if (!isset($components['host'])) {
return false;
}
return true;
default:
return true;
}
}
}