Mini Shell
<?php
/**
* Text Helper
*
* Text manipulations: Highlight, excerpt, truncate, strip of links, convert email addresses to mailto: links...
*
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
*
* Licensed under The MIT License
* For full copyright and license information, please see the LICENSE.txt
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
* @link http://cakephp.org CakePHP(tm) Project
* @package Cake.View.Helper
* @since CakePHP(tm) v 0.10.0.1076
* @license http://www.opensource.org/licenses/mit-license.php MIT License
*/
App::uses('AppHelper', 'View/Helper');
App::uses('Hash', 'Utility');
/**
* Text helper library.
*
* Text manipulations: Highlight, excerpt, truncate, strip of links, convert email addresses to mailto: links...
*
* @package Cake.View.Helper
* @property HtmlHelper $Html
* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html
* @see String
*/
class TextHelper extends AppHelper {
/**
* helpers
*
* @var array
*/
public $helpers = array('Html');
/**
* An array of md5sums and their contents.
* Used when inserting links into text.
*
* @var array
*/
protected $_placeholders = array();
/**
* CakeText utility instance
*
* @var stdClass
*/
protected $_engine;
/**
* Constructor
*
* ### Settings:
*
* - `engine` Class name to use to replace CakeText functionality.
* The class needs to be placed in the `Utility` directory.
*
* @param View $View the view object the helper is attached to.
* @param array $settings Settings array Settings array
* @throws CakeException when the engine class could not be found.
*/
public function __construct(View $View, $settings = array()) {
$settings = Hash::merge(array('engine' => 'CakeText'), $settings);
parent::__construct($View, $settings);
list($plugin, $engineClass) = pluginSplit($settings['engine'], true);
App::uses($engineClass, $plugin . 'Utility');
if (class_exists($engineClass)) {
$this->_engine = new $engineClass($settings);
} else {
throw new CakeException(__d('cake_dev', '%s could not be found', $engineClass));
}
}
/**
* Call methods from CakeText utility class
*
* @param string $method Method to call.
* @param array $params Parameters to pass to method.
* @return mixed Whatever is returned by called method, or false on failure
*/
public function __call($method, $params) {
return call_user_func_array(array($this->_engine, $method), $params);
}
/**
* Adds links (<a href=....) to a given text, by finding text that begins with
* strings like http:// and ftp://.
*
* ### Options
*
* - `escape` Control HTML escaping of input. Defaults to true.
*
* @param string $text Text
* @param array $options Array of HTML options, and options listed above.
* @return string The text with links
* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html#TextHelper::autoLinkUrls
*/
public function autoLinkUrls($text, $options = array()) {
$this->_placeholders = array();
$options += array('escape' => true);
$pattern = '#(?<!href="|src="|">)((?:https?|ftp|nntp)://[\p{L}0-9.\-_:]+(?:[^\s()<>]+|\(([^\s()<>]+|(\([^\s()<>]+\)))*\))+(?:\(([^\s()<>]+|(\([^\s()<>]+\)))*\)|[^\s`!()\[\]{};:\'".,<>?«»“”‘’]))#i';
$text = preg_replace_callback(
$pattern,
array(&$this, '_insertPlaceHolder'),
$text
);
$text = preg_replace_callback(
'#(?<!href="|">)(?<!\b[[:punct:]])(?<!http://|https://|ftp://|nntp://|//)www\.[^\n\%\ <]+[^<\n\%\,\.\ <](?<!\))#i',
array(&$this, '_insertPlaceHolder'),
$text
);
if ($options['escape']) {
$text = h($text);
}
return $this->_linkUrls($text, $options);
}
/**
* Saves the placeholder for a string, for later use. This gets around double
* escaping content in URL's.
*
* @param array $matches An array of regexp matches.
* @return string Replaced values.
*/
protected function _insertPlaceHolder($matches) {
$key = md5($matches[0]);
$this->_placeholders[$key] = $matches[0];
return $key;
}
/**
* Replace placeholders with links.
*
* @param string $text The text to operate on.
* @param array $htmlOptions The options for the generated links.
* @return string The text with links inserted.
*/
protected function _linkUrls($text, $htmlOptions) {
$replace = array();
foreach ($this->_placeholders as $hash => $url) {
$link = $url;
if (!preg_match('#^[a-z]+\://#', $url)) {
$url = 'http://' . $url;
}
$replace[$hash] = $this->Html->link($link, $url, $htmlOptions);
}
return strtr($text, $replace);
}
/**
* Links email addresses
*
* @param string $text The text to operate on
* @param array $options An array of options to use for the HTML.
* @return string
* @see TextHelper::autoLinkEmails()
*/
protected function _linkEmails($text, $options) {
$replace = array();
foreach ($this->_placeholders as $hash => $url) {
$replace[$hash] = $this->Html->link($url, 'mailto:' . $url, $options);
}
return strtr($text, $replace);
}
/**
* Adds email links (<a href="mailto:....) to a given text.
*
* ### Options
*
* - `escape` Control HTML escaping of input. Defaults to true.
*
* @param string $text Text
* @param array $options Array of HTML options, and options listed above.
* @return string The text with links
* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html#TextHelper::autoLinkEmails
*/
public function autoLinkEmails($text, $options = array()) {
$options += array('escape' => true);
$this->_placeholders = array();
$atom = '[\p{L}0-9!#$%&\'*+\/=?^_`{|}~-]';
$text = preg_replace_callback(
'/(?<=\s|^|\(|\>|\;)(' . $atom . '*(?:\.' . $atom . '+)*@[\p{L}0-9-]+(?:\.[\p{L}0-9-]+)+)/ui',
array(&$this, '_insertPlaceholder'),
$text
);
if ($options['escape']) {
$text = h($text);
}
return $this->_linkEmails($text, $options);
}
/**
* Convert all links and email addresses to HTML links.
*
* ### Options
*
* - `escape` Control HTML escaping of input. Defaults to true.
*
* @param string $text Text
* @param array $options Array of HTML options, and options listed above.
* @return string The text with links
* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html#TextHelper::autoLink
*/
public function autoLink($text, $options = array()) {
$text = $this->autoLinkUrls($text, $options);
return $this->autoLinkEmails($text, array_merge($options, array('escape' => false)));
}
/**
* Highlights a given phrase in a text. You can specify any expression in highlighter that
* may include the \1 expression to include the $phrase found.
*
* @param string $text Text to search the phrase in
* @param string $phrase The phrase that will be searched
* @param array $options An array of html attributes and options.
* @return string The highlighted text
* @see CakeText::highlight()
* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html#TextHelper::highlight
*/
public function highlight($text, $phrase, $options = array()) {
return $this->_engine->highlight($text, $phrase, $options);
}
/**
* Formats paragraphs around given text for all line breaks
* <br /> added for single line return
* <p> added for double line return
*
* @param string $text Text
* @return string The text with proper <p> and <br /> tags
* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html#TextHelper::autoParagraph
*/
public function autoParagraph($text) {
if (trim($text) !== '') {
$text = preg_replace('|<br[^>]*>\s*<br[^>]*>|i', "\n\n", $text . "\n");
$text = preg_replace("/\n\n+/", "\n\n", str_replace(array("\r\n", "\r"), "\n", $text));
$texts = preg_split('/\n\s*\n/', $text, -1, PREG_SPLIT_NO_EMPTY);
$text = '';
foreach ($texts as $txt) {
$text .= '<p>' . nl2br(trim($txt, "\n")) . "</p>\n";
}
$text = preg_replace('|<p>\s*</p>|', '', $text);
}
return $text;
}
/**
* Strips given text of all links (<a href=....)
*
* @param string $text Text
* @return string The text without links
* @see CakeText::stripLinks()
* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html#TextHelper::stripLinks
*/
public function stripLinks($text) {
return $this->_engine->stripLinks($text);
}
/**
* Truncates text.
*
* Cuts a string to the length of $length and replaces the last characters
* with the ellipsis if the text is longer than length.
*
* ### Options:
*
* - `ellipsis` Will be used as Ending and appended to the trimmed string (`ending` is deprecated)
* - `exact` If false, $text will not be cut mid-word
* - `html` If true, HTML tags would be handled correctly
*
* @param string $text String to truncate.
* @param int $length Length of returned string, including ellipsis.
* @param array $options An array of html attributes and options.
* @return string Trimmed string.
* @see CakeText::truncate()
* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html#TextHelper::truncate
*/
public function truncate($text, $length = 100, $options = array()) {
return $this->_engine->truncate($text, $length, $options);
}
/**
* Truncates text starting from the end.
*
* Cuts a string to the length of $length and replaces the first characters
* with the ellipsis if the text is longer than length.
*
* ### Options:
*
* - `ellipsis` Will be used as Beginning and prepended to the trimmed string
* - `exact` If false, $text will not be cut mid-word
*
* @param string $text String to truncate.
* @param int $length Length of returned string, including ellipsis.
* @param array $options An array of html attributes and options.
* @return string Trimmed string.
* @see CakeText::tail()
* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html#TextHelper::tail
*/
public function tail($text, $length = 100, $options = array()) {
return $this->_engine->tail($text, $length, $options);
}
/**
* Extracts an excerpt from the text surrounding the phrase with a number of characters on each side
* determined by radius.
*
* @param string $text String to search the phrase in
* @param string $phrase Phrase that will be searched for
* @param int $radius The amount of characters that will be returned on each side of the founded phrase
* @param string $ending Ending that will be appended
* @return string Modified string
* @see CakeText::excerpt()
* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html#TextHelper::excerpt
*/
public function excerpt($text, $phrase, $radius = 100, $ending = '...') {
return $this->_engine->excerpt($text, $phrase, $radius, $ending);
}
/**
* Creates a comma separated list where the last two items are joined with 'and', forming natural language.
*
* @param array $list The list to be joined.
* @param string $and The word used to join the last and second last items together with. Defaults to 'and'.
* @param string $separator The separator used to join all the other items together. Defaults to ', '.
* @return string The glued together string.
* @see CakeText::toList()
* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html#TextHelper::toList
*/
public function toList($list, $and = null, $separator = ', ') {
return $this->_engine->toList($list, $and, $separator);
}
}
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