url = $url;
}
/**
* Convert an HTML string to entities.
*
* @param string $value
* @return string
*/
public function entities($value)
{
return htmlentities($value, ENT_QUOTES, 'UTF-8', false);
}
/**
* Convert entities to HTML characters.
*
* @param string $value
* @return string
*/
public function decode($value)
{
return html_entity_decode($value, ENT_QUOTES, 'UTF-8');
}
/**
* Generate a link to a JavaScript file.
*
* @param string $url
* @param array $attributes
* @param bool $secure
* @return string
*/
public function script($url, $attributes = array(), $secure = null)
{
$attributes['src'] = $this->url->asset($url, $secure);
return 'attributes($attributes).'>'.PHP_EOL;
}
/**
* Generate a link to a CSS file.
*
* @param string $url
* @param array $attributes
* @param bool $secure
* @return string
*/
public function style($url, $attributes = array(), $secure = null)
{
$defaults = array('media' => 'all', 'type' => 'text/css', 'rel' => 'stylesheet');
$attributes = $attributes + $defaults;
$attributes['href'] = $this->url->asset($url, $secure);
return 'attributes($attributes).'>'.PHP_EOL;
}
/**
* Generate an HTML image element.
*
* @param string $url
* @param string $alt
* @param array $attributes
* @param bool $secure
* @return string
*/
public function image($url, $alt = null, $attributes = array(), $secure = null)
{
$attributes['alt'] = $alt;
return '.')
attributes($attributes).'>';
}
/**
* Generate a HTML link.
*
* @param string $url
* @param string $title
* @param array $attributes
* @param bool $secure
* @return string
*/
public function link($url, $title = null, $attributes = array(), $secure = null)
{
$url = $this->url->to($url, array(), $secure);
if (is_null($title) || $title === false) $title = $url;
return 'attributes($attributes).'>'.$this->entities($title).'';
}
/**
* Generate a HTTPS HTML link.
*
* @param string $url
* @param string $title
* @param array $attributes
* @return string
*/
public function secureLink($url, $title = null, $attributes = array())
{
return $this->link($url, $title, $attributes, true);
}
/**
* Generate a HTML link to an asset.
*
* @param string $url
* @param string $title
* @param array $attributes
* @param bool $secure
* @return string
*/
public function linkAsset($url, $title = null, $attributes = array(), $secure = null)
{
$url = $this->url->asset($url, $secure);
return $this->link($url, $title ?: $url, $attributes, $secure);
}
/**
* Generate a HTTPS HTML link to an asset.
*
* @param string $url
* @param string $title
* @param array $attributes
* @return string
*/
public function linkSecureAsset($url, $title = null, $attributes = array())
{
return $this->linkAsset($url, $title, $attributes, true);
}
/**
* Generate a HTML link to a named route.
*
* @param string $name
* @param string $title
* @param array $parameters
* @param array $attributes
* @return string
*/
public function linkRoute($name, $title = null, $parameters = array(), $attributes = array())
{
return $this->link($this->url->route($name, $parameters), $title, $attributes);
}
/**
* Generate a HTML link to a controller action.
*
* @param string $action
* @param string $title
* @param array $parameters
* @param array $attributes
* @return string
*/
public function linkAction($action, $title = null, $parameters = array(), $attributes = array())
{
return $this->link($this->url->action($action, $parameters), $title, $attributes);
}
/**
* Generate a HTML link to an email address.
*
* @param string $email
* @param string $title
* @param array $attributes
* @return string
*/
public function mailto($email, $title = null, $attributes = array())
{
$email = $this->email($email);
$title = $title ?: $email;
$email = $this->obfuscate('mailto:') . $email;
return 'attributes($attributes).'>'.$this->entities($title).'';
}
/**
* Obfuscate an e-mail address to prevent spam-bots from sniffing it.
*
* @param string $email
* @return string
*/
public function email($email)
{
return str_replace('@', '@', $this->obfuscate($email));
}
/**
* Generate an ordered list of items.
*
* @param array $list
* @param array $attributes
* @return string
*/
public function ol($list, $attributes = array())
{
return $this->listing('ol', $list, $attributes);
}
/**
* Generate an un-ordered list of items.
*
* @param array $list
* @param array $attributes
* @return string
*/
public function ul($list, $attributes = array())
{
return $this->listing('ul', $list, $attributes);
}
/**
* Create a listing HTML element.
*
* @param string $type
* @param array $list
* @param array $attributes
* @return string
*/
protected function listing($type, $list, $attributes = array())
{
$html = '';
if (count($list) == 0) return $html;
// Essentially we will just spin through the list and build the list of the HTML
// elements from the array. We will also handled nested lists in case that is
// present in the array. Then we will build out the final listing elements.
foreach ($list as $key => $value)
{
$html .= $this->listingElement($key, $type, $value);
}
$attributes = $this->attributes($attributes);
return "<{$type}{$attributes}>{$html}";
}
/**
* Create the HTML for a listing element.
*
* @param mixed $key
* @param string $type
* @param string $value
* @return string
*/
protected function listingElement($key, $type, $value)
{
if (is_array($value))
{
return $this->nestedListing($key, $type, $value);
}
else
{
return ''.e($value).'';
}
}
/**
* Create the HTML for a nested listing attribute.
*
* @param mixed $key
* @param string $type
* @param string $value
* @return string
*/
protected function nestedListing($key, $type, $value)
{
if (is_int($key))
{
return $this->listing($type, $value);
}
else
{
return ''.$key.$this->listing($type, $value).'';
}
}
/**
* Build an HTML attribute string from an array.
*
* @param array $attributes
* @return string
*/
public function attributes($attributes)
{
$html = array();
// For numeric keys we will assume that the key and the value are the same
// as this will convert HTML attributes such as "required" to a correct
// form like required="required" instead of using incorrect numerics.
foreach ((array) $attributes as $key => $value)
{
$element = $this->attributeElement($key, $value);
if ( ! is_null($element)) $html[] = $element;
}
return count($html) > 0 ? ' '.implode(' ', $html) : '';
}
/**
* Build a single attribute element.
*
* @param string $key
* @param string $value
* @return string
*/
protected function attributeElement($key, $value)
{
if (is_numeric($key)) $key = $value;
if ( ! is_null($value)) return $key.'="'.e($value).'"';
}
/**
* Obfuscate a string to prevent spam-bots from sniffing it.
*
* @param string $value
* @return string
*/
public function obfuscate($value)
{
$safe = '';
foreach (str_split($value) as $letter)
{
if (ord($letter) > 128) return $letter;
// To properly obfuscate the value, we will randomly convert each letter to
// its entity or hexadecimal representation, keeping a bot from sniffing
// the randomly obfuscated letters out of the string on the responses.
switch (rand(1, 3))
{
case 1:
$safe .= '&#'.ord($letter).';'; break;
case 2:
$safe .= '&#x'.dechex(ord($letter)).';'; break;
case 3:
$safe .= $letter;
}
}
return $safe;
}
}