WebSVN – SmartDukaan – /trunk/DtrMobileAppDashboard/lib/Cake/View/Helper/TextHelper.php

<?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();

/**
 * String utility instance
 *
 * @var stdClass
 */
        protected $_engine;

/**
 * Constructor
 *
 * ### Settings:
 *
 * - `engine` Class name to use to replace String 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' => 'String'), $settings);
                parent::__construct($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 String utility class
 * @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<]*)?)#ui';
                $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)));
        }

/**
 * @see String::highlight()
 *
 * @param string $text Text to search the phrase in
 * @param string $phrase The phrase that will be searched
 * @param array $options An array of html attributes and options.
 * @return string The highlighted text
 * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html#TextHelper::highlight
 */
        public function highlight($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;
        }

/**
 * @see String::stripLinks()
 *
 * @param string $text Text
 * @return string The text without links
 * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html#TextHelper::stripLinks
 */
        public function stripLinks($text) {
                return $this->_engine->stripLinks($text);
        }

/**
 * @see String::truncate()
 *
 * @param string $text String to truncate.
 * @param integer $length Length of returned string, including ellipsis.
 * @param array $options An array of html attributes and options.
 * @return string Trimmed string.
 * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html#TextHelper::truncate
 */
        public function truncate($text, $length = 100, $options = array()) {
                return $this->_engine->truncate($text, $length, $options);
        }

/**
 * @see String::excerpt()
 *
 * @param string $text String to search the phrase in
 * @param string $phrase Phrase that will be searched for
 * @param integer $radius The amount of characters that will be returned on each side of the founded phrase
 * @param string $ending Ending that will be appended
 * @return string Modified string
 * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html#TextHelper::excerpt
 */
        public function excerpt($text, $phrase, $radius = 100, $ending = '...') {
                return $this->_engine->excerpt($text, $phrase, $radius, $ending);
        }

/**
 * @see String::toList()
 *
 * @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 $separator The separator used to join all the other items together. Defaults to ', '
 * @return string The glued together string.
 * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html#TextHelper::toList
 */
        public function toList($list, $and = 'and', $separator = ', ') {
                return $this->_engine->toList($list, $and, $separator);
        }

}
Subversion Repositories SmartDukaan

(root)/trunk/DtrMobileAppDashboard/lib/Cake/View/Helper/TextHelper.php – Rev 13532
