| <?php if (!defined('BASEPATH')) exit('No direct script access allowed');
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| /**
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| * CodeIgniter
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| *
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| * An open source application development framework for PHP 4.3.2 or newer
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| *
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| * @package CodeIgniter
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| * @author ExpressionEngine Dev Team
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| * @copyright Copyright (c) 2006, EllisLab, Inc.
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| * @license http://codeigniter.com/user_guide/license.html
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| * @link http://codeigniter.com
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| * @since Version 1.0
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| * @filesource
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| */
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|
|
| // ------------------------------------------------------------------------
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|
|
| /**
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| * CodeIgniter Text Helpers
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| *
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| * @package CodeIgniter
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| * @subpackage Helpers
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| * @category Helpers
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| * @author ExpressionEngine Dev Team
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| * @link http://codeigniter.com/user_guide/helpers/text_helper.html
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| */
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|
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| // ------------------------------------------------------------------------
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|
|
| /**
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| * Word Limiter
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| *
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| * Limits a string to X number of words.
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| *
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| * @access public
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| * @param string
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| * @param integer
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| * @param string the end character. Usually an ellipsis
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| * @return string
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| */
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| if (! function_exists('word_limiter'))
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| {
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| function word_limiter($str, $limit = 100, $end_char = '…')
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| {
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| if (trim($str) == '')
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| {
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| return $str;
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| }
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|
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| preg_match('/^\s*+(?:\S++\s*+){1,'.(int) $limit.'}/', $str, $matches);
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|
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| if (strlen($str) == strlen($matches[0]))
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| {
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| $end_char = '';
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| }
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|
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| return rtrim($matches[0]).$end_char;
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| }
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| }
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|
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| // ------------------------------------------------------------------------
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|
|
| /**
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| * Character Limiter
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| *
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| * Limits the string based on the character count. Preserves complete words
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| * so the character count may not be exactly as specified.
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| *
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| * @access public
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| * @param string
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| * @param integer
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| * @param string the end character. Usually an ellipsis
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| * @return string
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| */
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| if (! function_exists('character_limiter'))
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| {
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| function character_limiter($str, $n = 500, $end_char = '…')
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| {
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| if (strlen($str) < $n)
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| {
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| return $str;
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| }
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|
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| $str = preg_replace("/\s+/", ' ', preg_replace("/(\r\n|\r|\n)/", " ", $str));
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|
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| if (strlen($str) <= $n)
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| {
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| return $str;
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| }
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|
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| $out = "";
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| foreach (explode(' ', trim($str)) as $val)
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| {
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| $out .= $val.' ';
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| if (strlen($out) >= $n)
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| {
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| return trim($out).$end_char;
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| }
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| }
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| }
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| }
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|
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| // ------------------------------------------------------------------------
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|
|
| /**
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| * High ASCII to Entities
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| *
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| * Converts High ascii text and MS Word special characters to character entities
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| *
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| * @access public
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| * @param string
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| * @return string
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| */
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| if (! function_exists('ascii_to_entities'))
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| {
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| function ascii_to_entities($str)
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| {
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| $count = 1;
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| $out = '';
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| $temp = array();
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|
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| for ($i = 0, $s = strlen($str); $i < $s; $i++)
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| {
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| $ordinal = ord($str[$i]);
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|
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| if ($ordinal < 128)
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| {
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| $out .= $str[$i];
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| }
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| else
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| {
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| if (count($temp) == 0)
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| {
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| $count = ($ordinal < 224) ? 2 : 3;
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| }
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|
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| $temp[] = $ordinal;
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|
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| if (count($temp) == $count)
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| {
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| $number = ($count == 3) ? (($temp['0'] % 16) * 4096) + (($temp['1'] % 64) * 64) + ($temp['2'] % 64) : (($temp['0'] % 32) * 64) + ($temp['1'] % 64);
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|
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| $out .= '&#'.$number.';';
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| $count = 1;
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| $temp = array();
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| }
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| }
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| }
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|
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| return $out;
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| }
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| }
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|
|
| // ------------------------------------------------------------------------
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|
|
| /**
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| * Entities to ASCII
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| *
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| * Converts character entities back to ASCII
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| *
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| * @access public
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| * @param string
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| * @param bool
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| * @return string
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| */
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| if (! function_exists('entities_to_ascii'))
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| {
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| function entities_to_ascii($str, $all = TRUE)
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| {
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| if (preg_match_all('/\&#(\d+)\;/', $str, $matches))
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| {
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| for ($i = 0, $s = count($matches['0']); $i < $s; $i++)
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| {
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| $digits = $matches['1'][$i];
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|
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| $out = '';
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|
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| if ($digits < 128)
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| {
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| $out .= chr($digits);
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|
|
| }
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| elseif ($digits < 2048)
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| {
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| $out .= chr(192 + (($digits - ($digits % 64)) / 64));
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| $out .= chr(128 + ($digits % 64));
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| }
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| else
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| {
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| $out .= chr(224 + (($digits - ($digits % 4096)) / 4096));
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| $out .= chr(128 + ((($digits % 4096) - ($digits % 64)) / 64));
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| $out .= chr(128 + ($digits % 64));
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| }
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|
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| $str = str_replace($matches['0'][$i], $out, $str);
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| }
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| }
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|
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| if ($all)
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| {
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| $str = str_replace(array("&", "<", ">", """, "'", "-"),
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| array("&","<",">","\"", "'", "-"),
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| $str);
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| }
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|
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| return $str;
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| }
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| }
|
|
|
| // ------------------------------------------------------------------------
|
|
|
| /**
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| * Word Censoring Function
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| *
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| * Supply a string and an array of disallowed words and any
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| * matched words will be converted to #### or to the replacement
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| * word you've submitted.
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| *
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| * @access public
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| * @param string the text string
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| * @param string the array of censoered words
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| * @param string the optional replacement value
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| * @return string
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| */
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| if (! function_exists('word_censor'))
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| {
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| function word_censor($str, $censored, $replacement = '')
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| {
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| if (! is_array($censored))
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| {
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| return $str;
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| }
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|
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| $str = ' '.$str.' ';
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| foreach ($censored as $badword)
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| {
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| if ($replacement != '')
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| {
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| $str = preg_replace("/\b(".str_replace('\*', '\w*?', preg_quote($badword)).")\b/i", $replacement, $str);
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| }
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| else
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| {
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| $str = preg_replace("/\b(".str_replace('\*', '\w*?', preg_quote($badword)).")\b/ie", "str_repeat('#', strlen('\\1'))", $str);
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| }
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| }
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|
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| return trim($str);
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| }
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| }
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|
|
| // ------------------------------------------------------------------------
|
|
|
| /**
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| * Code Highlighter
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| *
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| * Colorizes code strings
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| *
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| * @access public
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| * @param string the text string
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| * @return string
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| */
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| if (! function_exists('highlight_code'))
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| {
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| function highlight_code($str)
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| {
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| // The highlight string function encodes and highlights
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| // brackets so we need them to start raw
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| $str = str_replace(array('<', '>'), array('<', '>'), $str);
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|
|
| // Replace any existing PHP tags to temporary markers so they don't accidentally
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| // break the string out of PHP, and thus, thwart the highlighting.
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|
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| $str = str_replace(array('<?', '?>', '<%', '%>', '\\', '</script>'),
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| array('phptagopen', 'phptagclose', 'asptagopen', 'asptagclose', 'backslashtmp', 'scriptclose'), $str);
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|
|
| // The highlight_string function requires that the text be surrounded
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| // by PHP tags. Since we don't know if A) the submitted text has PHP tags,
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| // or B) whether the PHP tags enclose the entire string, we will add our
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| // own PHP tags around the string along with some markers to make replacement easier later
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|
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| $str = '<?php tempstart'."\n".$str.'tempend ?>';
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|
|
| // All the magic happens here, baby!
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| $str = highlight_string($str, TRUE);
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|
|
| // Prior to PHP 5, the highlight function used icky font tags
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| // so we'll replace them with span tags.
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| if (abs(phpversion()) < 5)
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| {
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| $str = str_replace(array('<font ', '</font>'), array('<span ', '</span>'), $str);
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| $str = preg_replace('#color="(.*?)"#', 'style="color: \\1"', $str);
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| }
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|
|
| // Remove our artificially added PHP
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| $str = preg_replace("#\<code\>.+?tempstart\<br />(?:\</span\>)?#is", "<code>\n", $str);
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| $str = preg_replace("#tempend.+#is", "</span>\n</code>", $str);
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|
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| // Replace our markers back to PHP tags.
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| $str = str_replace(array('phptagopen', 'phptagclose', 'asptagopen', 'asptagclose', 'backslashtmp', 'scriptclose'),
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| array('<?', '?>', '<%', '%>', '\\', '</script>'), $str);
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|
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| return $str;
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| }
|
| }
|
|
|
| // ------------------------------------------------------------------------
|
|
|
| /**
|
| * Phrase Highlighter
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| *
|
| * Highlights a phrase within a text string
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| *
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| * @access public
|
| * @param string the text string
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| * @param string the phrase you'd like to highlight
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| * @param string the openging tag to precede the phrase with
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| * @param string the closing tag to end the phrase with
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| * @return string
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| */
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| if (! function_exists('highlight_phrase'))
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| {
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| function highlight_phrase($str, $phrase, $tag_open = '<strong>', $tag_close = '</strong>')
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| {
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| if ($str == '')
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| {
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| return '';
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| }
|
|
|
| if ($phrase != '')
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| {
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| return preg_replace('/('.preg_quote($phrase, '/').')/i', $tag_open."\\1".$tag_close, $str);
|
| }
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|
|
| return $str;
|
| }
|
| }
|
|
|
| // ------------------------------------------------------------------------
|
|
|
| /**
|
| * Word Wrap
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| *
|
| * Wraps text at the specified character. Maintains the integrity of words.
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| * Anything placed between {unwrap}{/unwrap} will not be word wrapped, nor
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| * will URLs.
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| *
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| * @access public
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| * @param string the text string
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| * @param integer the number of characters to wrap at
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| * @return string
|
| */
|
| if (! function_exists('word_wrap'))
|
| {
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| function word_wrap($str, $charlim = '76')
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| {
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| // Se the character limit
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| if (! is_numeric($charlim))
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| $charlim = 76;
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|
|
| // Reduce multiple spaces
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| $str = preg_replace("| +|", " ", $str);
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|
|
| // Standardize newlines
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| $str = preg_replace("/\r\n|\r/", "\n", $str);
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|
|
| // If the current word is surrounded by {unwrap} tags we'll
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| // strip the entire chunk and replace it with a marker.
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| $unwrap = array();
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| if (preg_match_all("|(\{unwrap\}.+?\{/unwrap\})|s", $str, $matches))
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| {
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| for ($i = 0; $i < count($matches['0']); $i++)
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| {
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| $unwrap[] = $matches['1'][$i];
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| $str = str_replace($matches['1'][$i], "{{unwrapped".$i."}}", $str);
|
| }
|
| }
|
|
|
| // Use PHP's native function to do the initial wordwrap.
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| // We set the cut flag to FALSE so that any individual words that are
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| // too long get left alone. In the next step we'll deal with them.
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| $str = wordwrap($str, $charlim, "\n", FALSE);
|
|
|
| // Split the string into individual lines of text and cycle through them
|
| $output = "";
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| foreach (explode("\n", $str) as $line)
|
| {
|
| // Is the line within the allowed character count?
|
| // If so we'll join it to the output and continue
|
| if (strlen($line) <= $charlim)
|
| {
|
| $output .= $line."\n";
|
| continue;
|
| }
|
|
|
| $temp = '';
|
| while((strlen($line)) > $charlim)
|
| {
|
| // If the over-length word is a URL we won't wrap it
|
| if (preg_match("!\[url.+\]|://|wwww.!", $line))
|
| {
|
| break;
|
| }
|
|
|
| // Trim the word down
|
| $temp .= substr($line, 0, $charlim-1);
|
| $line = substr($line, $charlim-1);
|
| }
|
|
|
| // If $temp contains data it means we had to split up an over-length
|
| // word into smaller chunks so we'll add it back to our current line
|
| if ($temp != '')
|
| {
|
| $output .= $temp . "\n" . $line;
|
| }
|
| else
|
| {
|
| $output .= $line;
|
| }
|
|
|
| $output .= "\n";
|
| }
|
|
|
| // Put our markers back
|
| if (count($unwrap) > 0)
|
| {
|
| foreach ($unwrap as $key => $val)
|
| {
|
| $output = str_replace("{{unwrapped".$key."}}", $val, $output);
|
| }
|
| }
|
|
|
| // Remove the unwrap tags
|
| $output = str_replace(array('{unwrap}', '{/unwrap}'), '', $output);
|
|
|
| return $output;
|
| }
|
| }
|
|
|
| |
| /* End of file text_helper.php */ |
| /* Location: ./system/helpers/text_helper.php */ |