/**
* Modifies the auto_link helper (url_helper) by accepting as an optional third
* argument an array of html attributes for the anchor tags (just like the anchor helper).
*
* This array is supplied as the third argument, replacing the
* optional argument $pop in the original helper.
*
* This modified helper attempts to be backward compatible with the use of the
* original helper by accepting TRUE and FALSE as possible values for the $attributes
* argument, and giving output identical to the original usage of the helper.
*
* use: auto_link($string, 'url' , array('class' => 'external', 'target'=>'_blank'));
* use: auto_link($string, 'email', array('class' => 'email_link' , 'style' => 'color:red;'));
* use(legacy): auto_link($string, 'url' , TRUE);
*
* @link https://github.com/EllisLab/CodeIgniter/wiki/auto-link
* @author Derek Jones (original author)
* @author Ivan Tcholakov (adaptation)
*
* @see url_helper
* @link http://codeigniter.com/user_guide/helpers/url_helper.html
* @param string $str
* @param string $type
* @param mixed $attributes
* @return string
*/
function auto_link($str, $type = 'both', $attributes = '')
{
static $html_helper_loaded = null;
if ($html_helper_loaded !== true) {
get_instance()->load->helper('html');
$html_helper_loaded = true;
}
// MAKE THE THIRD ARGUMENT BACKWARD COMPATIBLE
// here we deal with the original third argument $pop
// which could be TRUE or FALSE, and was FALSE by default.
if ($attributes === TRUE) {
$attributes = ' target="_blank"';
} elseif ($attributes === FALSE) {
$attributes = '';
}
if ($attributes != '') {
$attributes = ' ' . get_attributes_string($attributes);
}
// Find and replace any URLs.
// Modified by Ivan Tcholakov, 19-DEC-2013.
//if ($type !== 'email' && preg_match_all('#(\w*://|www\.)[^\s()<>;]+\w#i', $str, $matches, PREG_OFFSET_CAPTURE | PREG_SET_ORDER))
if ($type !== 'email' && preg_match_all('#(\\w*://|www\\.)[^\\s()<>;]+(\\w|/)#i', $str, $matches, PREG_OFFSET_CAPTURE | PREG_SET_ORDER)) {
// We process the links in reverse order (last -> first) so that
// the returned string offsets from preg_match_all() are not
// moved as we add more HTML.
foreach (array_reverse($matches) as $match) {
// $match[0] is the matched string/link
// $match[1] is either a protocol prefix or 'www.'
//
// With PREG_OFFSET_CAPTURE, both of the above is an array,
// where the actual value is held in [0] and its offset at the [1] index.
$a = '<a href="' . (strpos($match[1][0], '/') ? '' : 'http://') . $match[0][0] . '"' . $attributes . '>' . $match[0][0] . '</a>';
$str = substr_replace($str, $a, $match[0][1], strlen($match[0][0]));
}
}
// Find and replace any emails.
if ($type !== 'url' && preg_match_all('#([\\w\\.\\-\\+]+@[a-z0-9\\-]+\\.[a-z0-9\\-\\.]+[^[:punct:]\\s])#i', $str, $matches, PREG_OFFSET_CAPTURE)) {
foreach (array_reverse($matches[0]) as $match) {
if (filter_var($match[0], FILTER_VALIDATE_EMAIL) !== FALSE) {
$str = substr_replace($str, safe_mailto($match[0], '', $attributes), $match[1], strlen($match[0]));
}
}
}
return $str;
}
public function set_attributes($tag = 'body', $attributes)
{
// $attributes: string or array
$tag = strtolower($tag);
if (!in_array($tag, array('body', 'html'))) {
return;
}
$this->_ci->load->_ci_cached_vars['template_' . $tag . '_tag_attributes'] = get_attributes_string($attributes);
}
/**
* Sets the value of the attribute
*
* @param string|array $attributes Array of attributes or HTML attribute string
* @param string $name Attribute name
* @param string $value Attribute value (will be set to $name if omitted)
*
* @return string A string containing result attributes
*/
function set_attribute($attributes, $name, $value = null)
{
$name = strtolower($name);
$attributes = prepare_attributes($attributes);
if (is_null($value)) {
$value = $name;
}
$attributes[$name] = (string) $value;
if ($name == 'class') {
if ($attributes[$name] == '') {
return remove_attribute($value, $name);
}
}
return get_attributes_string($attributes);
}
