pictcode / lib / Cake / Utility / CakeText.php @ master
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<?php
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/**
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* String handling methods.
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*
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* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
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* Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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*
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* Licensed under The MIT License
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* For full copyright and license information, please see the LICENSE.txt
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* Redistributions of files must retain the above copyright notice.
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*
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* @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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* @link http://cakephp.org CakePHP(tm) Project
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* @package Cake.Utility
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* @since CakePHP(tm) v 1.2.0.5551
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* @license http://www.opensource.org/licenses/mit-license.php MIT License
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*/
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/**
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* String handling methods.
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*
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* @package Cake.Utility
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*/
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class CakeText { |
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|
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/**
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* Generate a random UUID
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*
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* @see http://www.ietf.org/rfc/rfc4122.txt
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* @return string RFC 4122 UUID
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*/
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public static function uuid() { |
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$node = env('SERVER_ADDR'); |
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|
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if (strpos($node, ':') !== false) { |
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if (substr_count($node, '::')) { |
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$node = str_replace( |
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'::', str_repeat(':0000', 8 - substr_count($node, ':')) . ':', $node |
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); |
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} |
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$node = explode(':', $node); |
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$ipSix = ''; |
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|
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foreach ($node as $id) { |
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$ipSix .= str_pad(base_convert($id, 16, 2), 16, 0, STR_PAD_LEFT); |
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} |
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$node = base_convert($ipSix, 2, 10); |
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|
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if (strlen($node) < 38) { |
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$node = null; |
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} else {
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$node = crc32($node); |
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} |
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} elseif (empty($node)) { |
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$host = env('HOSTNAME'); |
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|
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if (empty($host)) { |
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$host = env('HOST'); |
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} |
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|
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if (!empty($host)) { |
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$ip = gethostbyname($host); |
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|
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if ($ip === $host) { |
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$node = crc32($host); |
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} else {
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$node = ip2long($ip); |
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} |
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} |
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} elseif ($node !== '127.0.0.1') { |
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$node = ip2long($node); |
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} else {
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$node = null; |
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} |
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|
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if (empty($node)) { |
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$node = crc32(Configure::read('Security.salt')); |
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} |
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|
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if (function_exists('hphp_get_thread_id')) { |
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$pid = hphp_get_thread_id();
|
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} elseif (function_exists('zend_thread_id')) { |
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$pid = zend_thread_id(); |
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} else {
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$pid = getmypid(); |
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} |
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if (!$pid || $pid > 65535) { |
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$pid = mt_rand(0, 0xfff) | 0x4000; |
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} |
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|
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list($timeMid, $timeLow) = explode(' ', microtime()); |
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return sprintf( |
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"%08x-%04x-%04x-%02x%02x-%04x%08x", (int)$timeLow, (int)substr($timeMid, 2) & 0xffff, |
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mt_rand(0, 0xfff) | 0x4000, mt_rand(0, 0x3f) | 0x80, mt_rand(0, 0xff), $pid, $node |
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); |
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} |
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|
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/**
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* Tokenizes a string using $separator, ignoring any instance of $separator that appears between
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* $leftBound and $rightBound.
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*
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* @param string $data The data to tokenize.
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* @param string $separator The token to split the data on.
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* @param string $leftBound The left boundary to ignore separators in.
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* @param string $rightBound The right boundary to ignore separators in.
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* @return mixed Array of tokens in $data or original input if empty.
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*/
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public static function tokenize($data, $separator = ',', $leftBound = '(', $rightBound = ')') { |
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if (empty($data)) { |
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return array(); |
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} |
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|
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$depth = 0; |
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$offset = 0; |
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$buffer = ''; |
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$results = array(); |
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$length = mb_strlen($data); |
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$open = false; |
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|
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while ($offset <= $length) { |
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$tmpOffset = -1; |
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$offsets = array( |
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mb_strpos($data, $separator, $offset), |
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mb_strpos($data, $leftBound, $offset), |
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mb_strpos($data, $rightBound, $offset) |
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); |
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for ($i = 0; $i < 3; $i++) { |
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if ($offsets[$i] !== false && ($offsets[$i] < $tmpOffset || $tmpOffset == -1)) { |
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$tmpOffset = $offsets[$i]; |
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} |
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} |
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if ($tmpOffset !== -1) { |
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$buffer .= mb_substr($data, $offset, ($tmpOffset - $offset)); |
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$char = mb_substr($data, $tmpOffset, 1); |
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if (!$depth && $char === $separator) { |
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$results[] = $buffer; |
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$buffer = ''; |
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} else {
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$buffer .= $char; |
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} |
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if ($leftBound !== $rightBound) { |
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if ($char === $leftBound) { |
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$depth++;
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} |
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if ($char === $rightBound) { |
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$depth--;
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} |
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} else {
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if ($char === $leftBound) { |
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if (!$open) { |
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$depth++;
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$open = true; |
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} else {
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$depth--;
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} |
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} |
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} |
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$offset = ++$tmpOffset; |
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} else {
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$results[] = $buffer . mb_substr($data, $offset); |
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$offset = $length + 1; |
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} |
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} |
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if (empty($results) && !empty($buffer)) { |
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$results[] = $buffer; |
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} |
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if (!empty($results)) { |
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return array_map('trim', $results); |
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} |
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return array(); |
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} |
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|
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/**
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* Replaces variable placeholders inside a $str with any given $data. Each key in the $data array
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* corresponds to a variable placeholder name in $str.
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* Example: `CakeText::insert(':name is :age years old.', array('name' => 'Bob', '65'));`
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* Returns: Bob is 65 years old.
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*
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* Available $options are:
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*
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* - before: The character or string in front of the name of the variable placeholder (Defaults to `:`)
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* - after: The character or string after the name of the variable placeholder (Defaults to null)
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* - escape: The character or string used to escape the before character / string (Defaults to `\`)
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* - format: A regex to use for matching variable placeholders. Default is: `/(?<!\\)\:%s/`
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* (Overwrites before, after, breaks escape / clean)
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* - clean: A boolean or array with instructions for CakeText::cleanInsert
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*
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* @param string $str A string containing variable placeholders
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* @param array $data A key => val array where each key stands for a placeholder variable name
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* to be replaced with val
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* @param array $options An array of options, see description above
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* @return string
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*/
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public static function insert($str, $data, $options = array()) { |
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$defaults = array( |
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'before' => ':', 'after' => null, 'escape' => '\\', 'format' => null, 'clean' => false |
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); |
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$options += $defaults; |
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$format = $options['format']; |
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$data = (array)$data; |
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if (empty($data)) { |
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return ($options['clean']) ? CakeText::cleanInsert($str, $options) : $str; |
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} |
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if (!isset($format)) { |
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$format = sprintf( |
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'/(?<!%s)%s%%s%s/',
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preg_quote($options['escape'], '/'), |
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str_replace('%', '%%', preg_quote($options['before'], '/')), |
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str_replace('%', '%%', preg_quote($options['after'], '/')) |
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); |
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} |
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|
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if (strpos($str, '?') !== false && is_numeric(key($data))) { |
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$offset = 0; |
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while (($pos = strpos($str, '?', $offset)) !== false) { |
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$val = array_shift($data); |
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$offset = $pos + strlen($val); |
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$str = substr_replace($str, $val, $pos, 1); |
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} |
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return ($options['clean']) ? CakeText::cleanInsert($str, $options) : $str; |
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} |
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asort($data); |
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|
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$dataKeys = array_keys($data); |
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$hashKeys = array_map('crc32', $dataKeys); |
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$tempData = array_combine($dataKeys, $hashKeys); |
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krsort($tempData); |
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|
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foreach ($tempData as $key => $hashVal) { |
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$key = sprintf($format, preg_quote($key, '/')); |
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$str = preg_replace($key, $hashVal, $str); |
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} |
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$dataReplacements = array_combine($hashKeys, array_values($data)); |
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foreach ($dataReplacements as $tmpHash => $tmpValue) { |
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$tmpValue = (is_array($tmpValue)) ? '' : $tmpValue; |
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$str = str_replace($tmpHash, $tmpValue, $str); |
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} |
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|
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if (!isset($options['format']) && isset($options['before'])) { |
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$str = str_replace($options['escape'] . $options['before'], $options['before'], $str); |
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} |
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return ($options['clean']) ? CakeText::cleanInsert($str, $options) : $str; |
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} |
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/**
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* Cleans up a CakeText::insert() formatted string with given $options depending on the 'clean' key in
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* $options. The default method used is text but html is also available. The goal of this function
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* is to replace all whitespace and unneeded markup around placeholders that did not get replaced
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* by CakeText::insert().
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*
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* @param string $str CakeText to clean.
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* @param array $options Options list.
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* @return string
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* @see CakeText::insert()
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*/
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public static function cleanInsert($str, $options) { |
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$clean = $options['clean']; |
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if (!$clean) { |
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return $str; |
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} |
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if ($clean === true) { |
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$clean = array('method' => 'text'); |
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} |
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if (!is_array($clean)) { |
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$clean = array('method' => $options['clean']); |
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} |
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switch ($clean['method']) { |
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case 'html': |
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$clean = array_merge(array( |
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'word' => '[\w,.]+', |
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'andText' => true, |
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'replacement' => '', |
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), $clean);
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$kleenex = sprintf( |
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'/[\s]*[a-z]+=(")(%s%s%s[\s]*)+\\1/i',
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preg_quote($options['before'], '/'), |
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$clean['word'], |
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preg_quote($options['after'], '/') |
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); |
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$str = preg_replace($kleenex, $clean['replacement'], $str); |
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if ($clean['andText']) { |
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$options['clean'] = array('method' => 'text'); |
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$str = CakeText::cleanInsert($str, $options); |
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} |
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break;
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case 'text': |
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$clean = array_merge(array( |
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'word' => '[\w,.]+', |
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'gap' => '[\s]*(?:(?:and|or)[\s]*)?', |
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'replacement' => '', |
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), $clean);
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|
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$kleenex = sprintf( |
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'/(%s%s%s%s|%s%s%s%s)/',
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preg_quote($options['before'], '/'), |
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$clean['word'], |
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preg_quote($options['after'], '/'), |
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$clean['gap'], |
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$clean['gap'], |
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preg_quote($options['before'], '/'), |
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$clean['word'], |
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preg_quote($options['after'], '/') |
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); |
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$str = preg_replace($kleenex, $clean['replacement'], $str); |
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break;
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} |
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return $str; |
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} |
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|
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/**
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* Wraps text to a specific width, can optionally wrap at word breaks.
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*
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* ### Options
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*
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* - `width` The width to wrap to. Defaults to 72.
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* - `wordWrap` Only wrap on words breaks (spaces) Defaults to true.
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* - `indent` CakeText to indent with. Defaults to null.
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* - `indentAt` 0 based index to start indenting at. Defaults to 0.
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*
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* @param string $text The text to format.
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* @param array|int $options Array of options to use, or an integer to wrap the text to.
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* @return string Formatted text.
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*/
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public static function wrap($text, $options = array()) { |
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if (is_numeric($options)) { |
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$options = array('width' => $options); |
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} |
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$options += array('width' => 72, 'wordWrap' => true, 'indent' => null, 'indentAt' => 0); |
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if ($options['wordWrap']) { |
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$wrapped = static::wordWrap($text, $options['width'], "\n"); |
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} else {
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$wrapped = trim(chunk_split($text, $options['width'] - 1, "\n")); |
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} |
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if (!empty($options['indent'])) { |
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$chunks = explode("\n", $wrapped); |
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for ($i = $options['indentAt'], $len = count($chunks); $i < $len; $i++) { |
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$chunks[$i] = $options['indent'] . $chunks[$i]; |
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} |
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$wrapped = implode("\n", $chunks); |
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} |
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return $wrapped; |
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} |
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|
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/**
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* Unicode aware version of wordwrap.
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*
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* @param string $text The text to format.
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* @param int $width The width to wrap to. Defaults to 72.
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* @param string $break The line is broken using the optional break parameter. Defaults to '\n'.
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* @param bool $cut If the cut is set to true, the string is always wrapped at the specified width.
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* @return string Formatted text.
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*/
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public static function wordWrap($text, $width = 72, $break = "\n", $cut = false) { |
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$paragraphs = explode($break, $text); |
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foreach ($paragraphs as &$paragraph) { |
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$paragraph = static::_wordWrap($paragraph, $width, $break, $cut); |
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} |
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return implode($break, $paragraphs); |
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} |
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|
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/**
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* Helper method for wordWrap().
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*
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* @param string $text The text to format.
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* @param int $width The width to wrap to. Defaults to 72.
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* @param string $break The line is broken using the optional break parameter. Defaults to '\n'.
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* @param bool $cut If the cut is set to true, the string is always wrapped at the specified width.
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* @return string Formatted text.
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*/
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protected static function _wordWrap($text, $width = 72, $break = "\n", $cut = false) { |
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if ($cut) { |
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$parts = array(); |
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while (mb_strlen($text) > 0) { |
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$part = mb_substr($text, 0, $width); |
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$parts[] = trim($part); |
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$text = trim(mb_substr($text, mb_strlen($part))); |
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} |
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return implode($break, $parts); |
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} |
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|
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$parts = array(); |
| 387 |
while (mb_strlen($text) > 0) { |
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if ($width >= mb_strlen($text)) { |
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$parts[] = trim($text); |
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break;
|
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} |
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|
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$part = mb_substr($text, 0, $width); |
| 394 |
$nextChar = mb_substr($text, $width, 1); |
| 395 |
if ($nextChar !== ' ') { |
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$breakAt = mb_strrpos($part, ' '); |
| 397 |
if ($breakAt === false) { |
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$breakAt = mb_strpos($text, ' ', $width); |
| 399 |
} |
| 400 |
if ($breakAt === false) { |
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$parts[] = trim($text); |
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break;
|
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} |
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$part = mb_substr($text, 0, $breakAt); |
| 405 |
} |
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|
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$part = trim($part); |
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$parts[] = $part; |
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$text = trim(mb_substr($text, mb_strlen($part))); |
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} |
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|
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return implode($break, $parts); |
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} |
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|
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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 $phrase found.
|
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*
|
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* ### Options:
|
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*
|
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* - `format` The piece of html with that the phrase will be highlighted
|
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* - `html` If true, will ignore any HTML tags, ensuring that only the correct text is highlighted
|
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* - `regex` a custom regex rule that is used to match words, default is '|$tag|iu'
|
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*
|
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* @param string $text Text to search the phrase in.
|
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* @param string|array $phrase The phrase or phrases that will be searched.
|
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* @param array $options An array of html attributes and options.
|
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* @return string The highlighted text
|
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* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html#TextHelper::highlight
|
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*/
|
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public static function highlight($text, $phrase, $options = array()) { |
| 432 |
if (empty($phrase)) { |
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return $text; |
| 434 |
} |
| 435 |
|
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$defaults = array( |
| 437 |
'format' => '<span class="highlight">\1</span>', |
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'html' => false, |
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'regex' => "|%s|iu" |
| 440 |
); |
| 441 |
$options += $defaults; |
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extract($options); |
| 443 |
|
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if (is_array($phrase)) { |
| 445 |
$replace = array(); |
| 446 |
$with = array(); |
| 447 |
|
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foreach ($phrase as $key => $segment) { |
| 449 |
$segment = '(' . preg_quote($segment, '|') . ')'; |
| 450 |
if ($html) { |
| 451 |
$segment = "(?![^<]+>)$segment(?![^<]+>)"; |
| 452 |
} |
| 453 |
|
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$with[] = (is_array($format)) ? $format[$key] : $format; |
| 455 |
$replace[] = sprintf($options['regex'], $segment); |
| 456 |
} |
| 457 |
|
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return preg_replace($replace, $with, $text); |
| 459 |
} |
| 460 |
|
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$phrase = '(' . preg_quote($phrase, '|') . ')'; |
| 462 |
if ($html) { |
| 463 |
$phrase = "(?![^<]+>)$phrase(?![^<]+>)"; |
| 464 |
} |
| 465 |
|
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return preg_replace(sprintf($options['regex'], $phrase), $format, $text); |
| 467 |
} |
| 468 |
|
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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 $text Text
|
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* @return string The text without links
|
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* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html#TextHelper::stripLinks
|
| 475 |
*/
|
| 476 |
public static function stripLinks($text) { |
| 477 |
return preg_replace('|<a\s+[^>]+>|im', '', preg_replace('|<\/a>|im', '', $text)); |
| 478 |
} |
| 479 |
|
| 480 |
/**
|
| 481 |
* Truncates text starting from the end.
|
| 482 |
*
|
| 483 |
* Cuts a string to the length of $length and replaces the first characters
|
| 484 |
* with the ellipsis if the text is longer than length.
|
| 485 |
*
|
| 486 |
* ### Options:
|
| 487 |
*
|
| 488 |
* - `ellipsis` Will be used as Beginning and prepended to the trimmed string
|
| 489 |
* - `exact` If false, $text will not be cut mid-word
|
| 490 |
*
|
| 491 |
* @param string $text CakeText to truncate.
|
| 492 |
* @param int $length Length of returned string, including ellipsis.
|
| 493 |
* @param array $options An array of options.
|
| 494 |
* @return string Trimmed string.
|
| 495 |
*/
|
| 496 |
public static function tail($text, $length = 100, $options = array()) { |
| 497 |
$defaults = array( |
| 498 |
'ellipsis' => '...', 'exact' => true |
| 499 |
); |
| 500 |
$options += $defaults; |
| 501 |
extract($options); |
| 502 |
|
| 503 |
if (!function_exists('mb_strlen')) { |
| 504 |
class_exists('Multibyte'); |
| 505 |
} |
| 506 |
|
| 507 |
if (mb_strlen($text) <= $length) { |
| 508 |
return $text; |
| 509 |
} |
| 510 |
|
| 511 |
$truncate = mb_substr($text, mb_strlen($text) - $length + mb_strlen($ellipsis)); |
| 512 |
if (!$exact) { |
| 513 |
$spacepos = mb_strpos($truncate, ' '); |
| 514 |
$truncate = $spacepos === false ? '' : trim(mb_substr($truncate, $spacepos)); |
| 515 |
} |
| 516 |
|
| 517 |
return $ellipsis . $truncate; |
| 518 |
} |
| 519 |
|
| 520 |
/**
|
| 521 |
* Truncates text.
|
| 522 |
*
|
| 523 |
* Cuts a string to the length of $length and replaces the last characters
|
| 524 |
* with the ellipsis if the text is longer than length.
|
| 525 |
*
|
| 526 |
* ### Options:
|
| 527 |
*
|
| 528 |
* - `ellipsis` Will be used as Ending and appended to the trimmed string (`ending` is deprecated)
|
| 529 |
* - `exact` If false, $text will not be cut mid-word
|
| 530 |
* - `html` If true, HTML tags would be handled correctly
|
| 531 |
*
|
| 532 |
* @param string $text CakeText to truncate.
|
| 533 |
* @param int $length Length of returned string, including ellipsis.
|
| 534 |
* @param array $options An array of html attributes and options.
|
| 535 |
* @return string Trimmed string.
|
| 536 |
* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html#TextHelper::truncate
|
| 537 |
*/
|
| 538 |
public static function truncate($text, $length = 100, $options = array()) { |
| 539 |
$defaults = array( |
| 540 |
'ellipsis' => '...', 'exact' => true, 'html' => false |
| 541 |
); |
| 542 |
if (isset($options['ending'])) { |
| 543 |
$defaults['ellipsis'] = $options['ending']; |
| 544 |
} elseif (!empty($options['html']) && Configure::read('App.encoding') === 'UTF-8') { |
| 545 |
$defaults['ellipsis'] = "\xe2\x80\xa6"; |
| 546 |
} |
| 547 |
$options += $defaults; |
| 548 |
extract($options); |
| 549 |
|
| 550 |
if (!function_exists('mb_strlen')) { |
| 551 |
class_exists('Multibyte'); |
| 552 |
} |
| 553 |
|
| 554 |
if ($html) { |
| 555 |
if (mb_strlen(preg_replace('/<.*?>/', '', $text)) <= $length) { |
| 556 |
return $text; |
| 557 |
} |
| 558 |
$totalLength = mb_strlen(strip_tags($ellipsis)); |
| 559 |
$openTags = array(); |
| 560 |
$truncate = ''; |
| 561 |
|
| 562 |
preg_match_all('/(<\/?([\w+]+)[^>]*>)?([^<>]*)/', $text, $tags, PREG_SET_ORDER); |
| 563 |
foreach ($tags as $tag) { |
| 564 |
if (!preg_match('/img|br|input|hr|area|base|basefont|col|frame|isindex|link|meta|param/s', $tag[2])) { |
| 565 |
if (preg_match('/<[\w]+[^>]*>/s', $tag[0])) { |
| 566 |
array_unshift($openTags, $tag[2]); |
| 567 |
} elseif (preg_match('/<\/([\w]+)[^>]*>/s', $tag[0], $closeTag)) { |
| 568 |
$pos = array_search($closeTag[1], $openTags); |
| 569 |
if ($pos !== false) { |
| 570 |
array_splice($openTags, $pos, 1); |
| 571 |
} |
| 572 |
} |
| 573 |
} |
| 574 |
$truncate .= $tag[1]; |
| 575 |
|
| 576 |
$contentLength = mb_strlen(preg_replace('/&[0-9a-z]{2,8};|&#[0-9]{1,7};|&#x[0-9a-f]{1,6};/i', ' ', $tag[3])); |
| 577 |
if ($contentLength + $totalLength > $length) { |
| 578 |
$left = $length - $totalLength; |
| 579 |
$entitiesLength = 0; |
| 580 |
if (preg_match_all('/&[0-9a-z]{2,8};|&#[0-9]{1,7};|&#x[0-9a-f]{1,6};/i', $tag[3], $entities, PREG_OFFSET_CAPTURE)) { |
| 581 |
foreach ($entities[0] as $entity) { |
| 582 |
if ($entity[1] + 1 - $entitiesLength <= $left) { |
| 583 |
$left--;
|
| 584 |
$entitiesLength += mb_strlen($entity[0]); |
| 585 |
} else {
|
| 586 |
break;
|
| 587 |
} |
| 588 |
} |
| 589 |
} |
| 590 |
|
| 591 |
$truncate .= mb_substr($tag[3], 0, $left + $entitiesLength); |
| 592 |
break;
|
| 593 |
} else {
|
| 594 |
$truncate .= $tag[3]; |
| 595 |
$totalLength += $contentLength; |
| 596 |
} |
| 597 |
if ($totalLength >= $length) { |
| 598 |
break;
|
| 599 |
} |
| 600 |
} |
| 601 |
} else {
|
| 602 |
if (mb_strlen($text) <= $length) { |
| 603 |
return $text; |
| 604 |
} |
| 605 |
$truncate = mb_substr($text, 0, $length - mb_strlen($ellipsis)); |
| 606 |
} |
| 607 |
if (!$exact) { |
| 608 |
$spacepos = mb_strrpos($truncate, ' '); |
| 609 |
if ($html) { |
| 610 |
$truncateCheck = mb_substr($truncate, 0, $spacepos); |
| 611 |
$lastOpenTag = mb_strrpos($truncateCheck, '<'); |
| 612 |
$lastCloseTag = mb_strrpos($truncateCheck, '>'); |
| 613 |
if ($lastOpenTag > $lastCloseTag) { |
| 614 |
preg_match_all('/<[\w]+[^>]*>/s', $truncate, $lastTagMatches); |
| 615 |
$lastTag = array_pop($lastTagMatches[0]); |
| 616 |
$spacepos = mb_strrpos($truncate, $lastTag) + mb_strlen($lastTag); |
| 617 |
} |
| 618 |
$bits = mb_substr($truncate, $spacepos); |
| 619 |
preg_match_all('/<\/([a-z]+)>/', $bits, $droppedTags, PREG_SET_ORDER); |
| 620 |
if (!empty($droppedTags)) { |
| 621 |
if (!empty($openTags)) { |
| 622 |
foreach ($droppedTags as $closingTag) { |
| 623 |
if (!in_array($closingTag[1], $openTags)) { |
| 624 |
array_unshift($openTags, $closingTag[1]); |
| 625 |
} |
| 626 |
} |
| 627 |
} else {
|
| 628 |
foreach ($droppedTags as $closingTag) { |
| 629 |
$openTags[] = $closingTag[1]; |
| 630 |
} |
| 631 |
} |
| 632 |
} |
| 633 |
} |
| 634 |
$truncate = mb_substr($truncate, 0, $spacepos); |
| 635 |
} |
| 636 |
$truncate .= $ellipsis; |
| 637 |
|
| 638 |
if ($html) { |
| 639 |
foreach ($openTags as $tag) { |
| 640 |
$truncate .= '</' . $tag . '>'; |
| 641 |
} |
| 642 |
} |
| 643 |
|
| 644 |
return $truncate; |
| 645 |
} |
| 646 |
|
| 647 |
/**
|
| 648 |
* Extracts an excerpt from the text surrounding the phrase with a number of characters on each side
|
| 649 |
* determined by radius.
|
| 650 |
*
|
| 651 |
* @param string $text CakeText to search the phrase in
|
| 652 |
* @param string $phrase Phrase that will be searched for
|
| 653 |
* @param int $radius The amount of characters that will be returned on each side of the founded phrase
|
| 654 |
* @param string $ellipsis Ending that will be appended
|
| 655 |
* @return string Modified string
|
| 656 |
* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html#TextHelper::excerpt
|
| 657 |
*/
|
| 658 |
public static function excerpt($text, $phrase, $radius = 100, $ellipsis = '...') { |
| 659 |
if (empty($text) || empty($phrase)) { |
| 660 |
return static::truncate($text, $radius * 2, array('ellipsis' => $ellipsis)); |
| 661 |
} |
| 662 |
|
| 663 |
$append = $prepend = $ellipsis; |
| 664 |
|
| 665 |
$phraseLen = mb_strlen($phrase); |
| 666 |
$textLen = mb_strlen($text); |
| 667 |
|
| 668 |
$pos = mb_strpos(mb_strtolower($text), mb_strtolower($phrase)); |
| 669 |
if ($pos === false) { |
| 670 |
return mb_substr($text, 0, $radius) . $ellipsis; |
| 671 |
} |
| 672 |
|
| 673 |
$startPos = $pos - $radius; |
| 674 |
if ($startPos <= 0) { |
| 675 |
$startPos = 0; |
| 676 |
$prepend = ''; |
| 677 |
} |
| 678 |
|
| 679 |
$endPos = $pos + $phraseLen + $radius; |
| 680 |
if ($endPos >= $textLen) { |
| 681 |
$endPos = $textLen; |
| 682 |
$append = ''; |
| 683 |
} |
| 684 |
|
| 685 |
$excerpt = mb_substr($text, $startPos, $endPos - $startPos); |
| 686 |
$excerpt = $prepend . $excerpt . $append; |
| 687 |
|
| 688 |
return $excerpt; |
| 689 |
} |
| 690 |
|
| 691 |
/**
|
| 692 |
* Creates a comma separated list where the last two items are joined with 'and', forming natural language.
|
| 693 |
*
|
| 694 |
* @param array $list The list to be joined.
|
| 695 |
* @param string $and The word used to join the last and second last items together with. Defaults to 'and'.
|
| 696 |
* @param string $separator The separator used to join all the other items together. Defaults to ', '.
|
| 697 |
* @return string The glued together string.
|
| 698 |
* @link http://book.cakephp.org/2.0/en/core-libraries/helpers/text.html#TextHelper::toList
|
| 699 |
*/
|
| 700 |
public static function toList($list, $and = null, $separator = ', ') { |
| 701 |
if ($and === null) { |
| 702 |
$and = __d('cake', 'and'); |
| 703 |
} |
| 704 |
if (count($list) > 1) { |
| 705 |
return implode($separator, array_slice($list, null, -1)) . ' ' . $and . ' ' . array_pop($list); |
| 706 |
} |
| 707 |
|
| 708 |
return array_pop($list); |
| 709 |
} |
| 710 |
} |