mirror of
https://github.com/kamilwylegala/cakephp2-php8.git
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424 lines
13 KiB
PHP
424 lines
13 KiB
PHP
<?php
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/**
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* Text Helper
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*
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* Text manipulations: Highlight, excerpt, truncate, strip of links, convert email addresses to mailto: links...
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*
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* PHP 5
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*
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* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
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* Copyright 2005-2011, Cake Software Foundation, Inc. (http://cakefoundation.org)
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*
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* Licensed under The MIT License
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* Redistributions of files must retain the above copyright notice.
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*
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* @copyright Copyright 2005-2011, Cake Software Foundation, Inc. (http://cakefoundation.org)
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* @link http://cakephp.org CakePHP(tm) Project
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* @package Cake.View.Helper
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* @since CakePHP(tm) v 0.10.0.1076
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* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
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*/
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App::uses('AppHelper', 'View/Helper');
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App::uses('HtmlHelper', 'Helper');
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App::uses('Multibyte', 'I18n');
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/**
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* Text helper library.
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*
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* Text manipulations: Highlight, excerpt, truncate, strip of links, convert email addresses to mailto: links...
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*
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* @package Cake.View.Helper
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* @property HtmlHelper $Html
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* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html
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*/
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class TextHelper extends AppHelper {
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/**
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* helpers
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*
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* @var array
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*/
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public $helpers = array('Html');
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/**
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* An array of md5sums and their contents.
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* Used when inserting links into text.
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*
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* @var array
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*/
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protected $_placeholders = array();
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/**
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* Highlights a given phrase in a text. You can specify any expression in highlighter that
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* may include the \1 expression to include the $phrase found.
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*
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* ### Options:
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*
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* - `format` The piece of html with that the phrase will be highlighted
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* - `html` If true, will ignore any HTML tags, ensuring that only the correct text is highlighted
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*
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* @param string $text Text to search the phrase in
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* @param string $phrase The phrase that will be searched
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* @param array $options An array of html attributes and options.
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* @return string The highlighted text
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* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html#TextHelper::highlight
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*/
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public function highlight($text, $phrase, $options = array()) {
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if (empty($phrase)) {
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return $text;
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}
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$default = array(
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'format' => '<span class="highlight">\1</span>',
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'html' => false
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);
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$options = array_merge($default, $options);
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extract($options);
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if (is_array($phrase)) {
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$replace = array();
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$with = array();
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foreach ($phrase as $key => $segment) {
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$segment = '(' . preg_quote($segment, '|') . ')';
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if ($html) {
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$segment = "(?![^<]+>)$segment(?![^<]+>)";
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}
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$with[] = (is_array($format)) ? $format[$key] : $format;
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$replace[] = "|$segment|iu";
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}
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return preg_replace($replace, $with, $text);
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} else {
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$phrase = '(' . preg_quote($phrase, '|') . ')';
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if ($html) {
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$phrase = "(?![^<]+>)$phrase(?![^<]+>)";
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}
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return preg_replace("|$phrase|iu", $format, $text);
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}
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}
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/**
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* Strips given text of all links (<a href=....)
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*
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* @param string $text Text
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* @return string The text without links
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* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html#TextHelper::stripLinks
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*/
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public function stripLinks($text) {
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return preg_replace('|<a\s+[^>]+>|im', '', preg_replace('|<\/a>|im', '', $text));
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}
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/**
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* Adds links (<a href=....) to a given text, by finding text that begins with
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* strings like http:// and ftp://.
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*
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* ### Options
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*
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* - `escape` Control HTML escaping of input. Defaults to true.
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*
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* @param string $text Text
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* @param array $options Array of HTML options, and options listed above.
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* @return string The text with links
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* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html#TextHelper::autoLinkUrls
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*/
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public function autoLinkUrls($text, $options = array()) {
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$this->_placeholders = array();
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$options += array('escape' => true);
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$text = preg_replace_callback(
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'#(?<!href="|src="|">)((?:https?|ftp|nntp)://[^\s<>()]+)#i',
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array(&$this, '_insertPlaceHolder'),
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$text
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);
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$text = preg_replace_callback(
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'#(?<!href="|">)(?<!http://|https://|ftp://|nntp://)(www\.[^\n\%\ <]+[^<\n\%\,\.\ <])(?<!\))#i',
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array(&$this, '_insertPlaceHolder'),
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$text
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);
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if ($options['escape']) {
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$text = h($text);
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}
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return $this->_linkUrls($text, $options);
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}
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/**
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* Saves the placeholder for a string, for later use. This gets around double
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* escaping content in URL's.
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*
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* @param array $matches An array of regexp matches.
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* @return string Replaced values.
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*/
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protected function _insertPlaceHolder($matches) {
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$key = md5($matches[0]);
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$this->_placeholders[$key] = $matches[0];
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return $key;
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}
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/**
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* Replace placeholders with links.
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*
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* @param string $text The text to operate on.
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* @param array $htmlOptions The options for the generated links.
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* @return string The text with links inserted.
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*/
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protected function _linkUrls($text, $htmlOptions) {
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$replace = array();
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foreach ($this->_placeholders as $md5 => $url) {
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$link = $url;
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if (!preg_match('#^[a-z]+\://#', $url)) {
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$url = 'http://' . $url;
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}
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$replace[$md5] = $this->Html->link($link, $url, $htmlOptions);
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}
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return strtr($text, $replace);
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}
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/**
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* Links email addresses
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*
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* @param string $text The text to operate on
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* @param array $options An array of options to use for the HTML.
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* @return string
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* @see TextHelper::autoLinkEmails()
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*/
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protected function _linkEmails($text, $options) {
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$replace = array();
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foreach ($this->_placeholders as $md5 => $url) {
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$replace[$md5] = $this->Html->link($url, 'mailto:' . $url, $options);
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}
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return strtr($text, $replace);
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}
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/**
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* Adds email links (<a href="mailto:....) to a given text.
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*
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* ### Options
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*
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* - `escape` Control HTML escaping of input. Defaults to true.
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*
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* @param string $text Text
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* @param array $options Array of HTML options, and options listed above.
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* @return string The text with links
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* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html#TextHelper::autoLinkEmails
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*/
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public function autoLinkEmails($text, $options = array()) {
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$options += array('escape' => true);
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$this->_placeholders = array();
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$atom = '[a-z0-9!#$%&\'*+\/=?^_`{|}~-]';
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$text = preg_replace_callback(
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'/(' . $atom . '+(?:\.' . $atom . '+)*@[a-z0-9-]+(?:\.[a-z0-9-]+)+)/i',
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array(&$this, '_insertPlaceholder'),
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$text
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);
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if ($options['escape']) {
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$text = h($text);
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}
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return $this->_linkEmails($text, $options);
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}
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/**
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* Convert all links and email addresses to HTML links.
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*
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* ### Options
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*
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* - `escape` Control HTML escaping of input. Defaults to true.
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*
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* @param string $text Text
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* @param array $options Array of HTML options, and options listed above.
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* @return string The text with links
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* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html#TextHelper::autoLink
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*/
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public function autoLink($text, $options = array()) {
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$text = $this->autoLinkUrls($text, $options);
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return $this->autoLinkEmails($text, array_merge($options, array('escape' => false)));
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}
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/**
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* Truncates text.
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*
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* Cuts a string to the length of $length and replaces the last characters
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* with the ending if the text is longer than length.
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*
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* ### Options:
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*
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* - `ending` Will be used as Ending and appended to the trimmed string
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* - `exact` If false, $text will not be cut mid-word
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* - `html` If true, HTML tags would be handled correctly
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*
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* @param string $text String to truncate.
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* @param integer $length Length of returned string, including ellipsis.
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* @param array $options An array of html attributes and options.
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* @return string Trimmed string.
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* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html#TextHelper::truncate
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*/
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public function truncate($text, $length = 100, $options = array()) {
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$default = array(
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'ending' => '...', 'exact' => true, 'html' => false
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);
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$options = array_merge($default, $options);
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extract($options);
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if (!function_exists('mb_strlen')) {
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class_exists('Multibyte');
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}
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if ($html) {
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if (mb_strlen(preg_replace('/<.*?>/', '', $text)) <= $length) {
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return $text;
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}
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$totalLength = mb_strlen(strip_tags($ending));
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$openTags = array();
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$truncate = '';
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preg_match_all('/(<\/?([\w+]+)[^>]*>)?([^<>]*)/', $text, $tags, PREG_SET_ORDER);
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foreach ($tags as $tag) {
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if (!preg_match('/img|br|input|hr|area|base|basefont|col|frame|isindex|link|meta|param/s', $tag[2])) {
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if (preg_match('/<[\w]+[^>]*>/s', $tag[0])) {
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array_unshift($openTags, $tag[2]);
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} else if (preg_match('/<\/([\w]+)[^>]*>/s', $tag[0], $closeTag)) {
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$pos = array_search($closeTag[1], $openTags);
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if ($pos !== false) {
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array_splice($openTags, $pos, 1);
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}
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}
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}
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$truncate .= $tag[1];
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$contentLength = mb_strlen(preg_replace('/&[0-9a-z]{2,8};|&#[0-9]{1,7};|&#x[0-9a-f]{1,6};/i', ' ', $tag[3]));
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if ($contentLength + $totalLength > $length) {
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$left = $length - $totalLength;
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$entitiesLength = 0;
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if (preg_match_all('/&[0-9a-z]{2,8};|&#[0-9]{1,7};|&#x[0-9a-f]{1,6};/i', $tag[3], $entities, PREG_OFFSET_CAPTURE)) {
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foreach ($entities[0] as $entity) {
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if ($entity[1] + 1 - $entitiesLength <= $left) {
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$left--;
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$entitiesLength += mb_strlen($entity[0]);
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} else {
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break;
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}
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}
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}
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$truncate .= mb_substr($tag[3], 0 , $left + $entitiesLength);
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break;
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} else {
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$truncate .= $tag[3];
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$totalLength += $contentLength;
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}
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if ($totalLength >= $length) {
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break;
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}
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}
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} else {
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if (mb_strlen($text) <= $length) {
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return $text;
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} else {
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$truncate = mb_substr($text, 0, $length - mb_strlen($ending));
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}
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}
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if (!$exact) {
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$spacepos = mb_strrpos($truncate, ' ');
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if ($html) {
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$truncateCheck = mb_substr($truncate, 0, $spacepos);
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$lastOpenTag = mb_strrpos($truncateCheck, '<');
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$lastCloseTag = mb_strrpos($truncateCheck, '>');
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if ($lastOpenTag > $lastCloseTag) {
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preg_match_all('/<[\w]+[^>]*>/s', $truncate, $lastTagMatches);
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$lastTag = array_pop($lastTagMatches[0]);
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$spacepos = mb_strrpos($truncate, $lastTag) + mb_strlen($lastTag);
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}
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$bits = mb_substr($truncate, $spacepos);
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preg_match_all('/<\/([a-z]+)>/', $bits, $droppedTags, PREG_SET_ORDER);
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if (!empty($droppedTags)) {
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if (!empty($openTags)) {
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foreach ($droppedTags as $closingTag) {
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if (!in_array($closingTag[1], $openTags)) {
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array_unshift($openTags, $closingTag[1]);
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}
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}
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} else {
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foreach ($droppedTags as $closingTag) {
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array_push($openTags, $closingTag[1]);
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}
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}
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}
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}
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$truncate = mb_substr($truncate, 0, $spacepos);
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}
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$truncate .= $ending;
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if ($html) {
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foreach ($openTags as $tag) {
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$truncate .= '</' . $tag . '>';
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}
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}
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return $truncate;
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}
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/**
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* Extracts an excerpt from the text surrounding the phrase with a number of characters on each side
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* determined by radius.
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*
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* @param string $text String to search the phrase in
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* @param string $phrase Phrase that will be searched for
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* @param integer $radius The amount of characters that will be returned on each side of the founded phrase
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* @param string $ending Ending that will be appended
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* @return string Modified string
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* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html#TextHelper::excerpt
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*/
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public function excerpt($text, $phrase, $radius = 100, $ending = '...') {
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if (empty($text) or empty($phrase)) {
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return $this->truncate($text, $radius * 2, array('ending' => $ending));
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}
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$append = $prepend = $ending;
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$phraseLen = mb_strlen($phrase);
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$textLen = mb_strlen($text);
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$pos = mb_strpos(mb_strtolower($text), mb_strtolower($phrase));
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if ($pos === false) {
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return mb_substr($text, 0, $radius) . $ending;
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}
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$startPos = $pos - $radius;
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if ($startPos <= 0) {
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$startPos = 0;
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$prepend = '';
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}
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$endPos = $pos + $phraseLen + $radius;
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if ($endPos >= $textLen) {
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$endPos = $textLen;
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$append = '';
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}
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$excerpt = mb_substr($text, $startPos, $endPos - $startPos);
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$excerpt = $prepend . $excerpt . $append;
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return $excerpt;
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}
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/**
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* Creates a comma separated list where the last two items are joined with 'and', forming natural English
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*
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* @param array $list The list to be joined
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* @param string $and The word used to join the last and second last items together with. Defaults to 'and'
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* @param string $separator The separator used to join all the other items together. Defaults to ', '
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* @return string The glued together string.
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* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html#TextHelper::toList
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*/
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public function toList($list, $and = 'and', $separator = ', ') {
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if (count($list) > 1) {
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return implode($separator, array_slice($list, null, -1)) . ' ' . $and . ' ' . array_pop($list);
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} else {
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return array_pop($list);
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}
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}
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}
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