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<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');/*** CodeIgniter** An open source application development framework for PHP 5.1.6 or newer** @package CodeIgniter* @author ExpressionEngine Dev Team* @copyright Copyright (c) 2008 - 2011, EllisLab, Inc.* @license http://codeigniter.com/user_guide/license.html* @link http://codeigniter.com* @since Version 1.0* @filesource*/// ------------------------------------------------------------------------/*** CodeIgniter Text Helpers** @package CodeIgniter* @subpackage Helpers* @category Helpers* @author ExpressionEngine Dev Team* @link http://codeigniter.com/user_guide/helpers/text_helper.html*/// ------------------------------------------------------------------------/*** Word Limiter** Limits a string to X number of words.** @access public* @param string* @param integer* @param string the end character. Usually an ellipsis* @return string*/if ( ! function_exists('word_limiter')){function word_limiter($str, $limit = 100, $end_char = '…'){if (trim($str) == ''){return $str;}preg_match('/^\s*+(?:\S++\s*+){1,'.(int) $limit.'}/', $str, $matches);if (strlen($str) == strlen($matches[0])){$end_char = '';}return rtrim($matches[0]).$end_char;}}// ------------------------------------------------------------------------/*** Character Limiter** Limits the string based on the character count. Preserves complete words* so the character count may not be exactly as specified.** @access public* @param string* @param integer* @param string the end character. Usually an ellipsis* @return string*/if ( ! function_exists('character_limiter')){function character_limiter($str, $n = 500, $end_char = '…'){if (strlen($str) < $n){return $str;}$str = preg_replace("/\s+/", ' ', str_replace(array("\r\n", "\r", "\n"), ' ', $str));if (strlen($str) <= $n){return $str;}$out = "";foreach (explode(' ', trim($str)) as $val){$out .= $val.' ';if (strlen($out) >= $n){$out = trim($out);return (strlen($out) == strlen($str)) ? $out : $out.$end_char;}}}}// ------------------------------------------------------------------------/*** High ASCII to Entities** Converts High ascii text and MS Word special characters to character entities** @access public* @param string* @return string*/if ( ! function_exists('ascii_to_entities')){function ascii_to_entities($str){$count = 1;$out = '';$temp = array();for ($i = 0, $s = strlen($str); $i < $s; $i++){$ordinal = ord($str[$i]);if ($ordinal < 128){/*If the $temp array has a value but we have moved on, then it seems onlyfair that we output that entity and restart $temp before continuing. -Paul*/if (count($temp) == 1){$out .= '&#'.array_shift($temp).';';$count = 1;}$out .= $str[$i];}else{if (count($temp) == 0){$count = ($ordinal < 224) ? 2 : 3;}$temp[] = $ordinal;if (count($temp) == $count){$number = ($count == 3) ? (($temp['0'] % 16) * 4096) + (($temp['1'] % 64) * 64) + ($temp['2'] % 64) : (($temp['0'] % 32) * 64) + ($temp['1'] % 64);$out .= '&#'.$number.';';$count = 1;$temp = array();}}}return $out;}}// ------------------------------------------------------------------------/*** Entities to ASCII** Converts character entities back to ASCII** @access public* @param string* @param bool* @return string*/if ( ! function_exists('entities_to_ascii')){function entities_to_ascii($str, $all = TRUE){if (preg_match_all('/\&#(\d+)\;/', $str, $matches)){for ($i = 0, $s = count($matches['0']); $i < $s; $i++){$digits = $matches['1'][$i];$out = '';if ($digits < 128){$out .= chr($digits);}elseif ($digits < 2048){$out .= chr(192 + (($digits - ($digits % 64)) / 64));$out .= chr(128 + ($digits % 64));}else{$out .= chr(224 + (($digits - ($digits % 4096)) / 4096));$out .= chr(128 + ((($digits % 4096) - ($digits % 64)) / 64));$out .= chr(128 + ($digits % 64));}$str = str_replace($matches['0'][$i], $out, $str);}}if ($all){$str = str_replace(array("&", "<", ">", """, "'", "-"),array("&","<",">","\"", "'", "-"),$str);}return $str;}}// ------------------------------------------------------------------------/*** Word Censoring Function** Supply a string and an array of disallowed words and any* matched words will be converted to #### or to the replacement* word you've submitted.** @access public* @param string the text string* @param string the array of censoered words* @param string the optional replacement value* @return string*/if ( ! function_exists('word_censor')){function word_censor($str, $censored, $replacement = ''){if ( ! is_array($censored)){return $str;}$str = ' '.$str.' ';// \w, \b and a few others do not match on a unicode character// set for performance reasons. As a result words like über// will not match on a word boundary. Instead, we'll assume that// a bad word will be bookeneded by any of these characters.$delim = '[-_\'\"`(){}<>\[\]|!?@#%&,.:;^~*+=\/ 0-9\n\r\t]';foreach ($censored as $badword){if ($replacement != ''){$str = preg_replace("/({$delim})(".str_replace('\*', '\w*?', preg_quote($badword, '/')).")({$delim})/i", "\\1{$replacement}\\3", $str);}else{$str = preg_replace("/({$delim})(".str_replace('\*', '\w*?', preg_quote($badword, '/')).")({$delim})/ie", "'\\1'.str_repeat('#', strlen('\\2')).'\\3'", $str);}}return trim($str);}}// ------------------------------------------------------------------------/*** Code Highlighter** Colorizes code strings** @access public* @param string the text string* @return string*/if ( ! function_exists('highlight_code')){function highlight_code($str){// The highlight string function encodes and highlights// brackets so we need them to start raw$str = str_replace(array('<', '>'), array('<', '>'), $str);// Replace any existing PHP tags to temporary markers so they don't accidentally// break the string out of PHP, and thus, thwart the highlighting.$str = str_replace(array('<?', '?>', '<%', '%>', '\\', '</script>'),array('phptagopen', 'phptagclose', 'asptagopen', 'asptagclose', 'backslashtmp', 'scriptclose'), $str);// The highlight_string function requires that the text be surrounded// by PHP tags, which we will remove later$str = '<?php '.$str.' ?>'; // <?// All the magic happens here, baby!$str = highlight_string($str, TRUE);// Prior to PHP 5, the highligh function used icky <font> tags// so we'll replace them with <span> tags.if (abs(PHP_VERSION) < 5){$str = str_replace(array('<font ', '</font>'), array('<span ', '</span>'), $str);$str = preg_replace('#color="(.*?)"#', 'style="color: \\1"', $str);}// Remove our artificially added PHP, and the syntax highlighting that came with it$str = preg_replace('/<span style="color: #([A-Z0-9]+)"><\?php( | )/i', '<span style="color: #$1">', $str);$str = preg_replace('/(<span style="color: #[A-Z0-9]+">.*?)\?><\/span>\n<\/span>\n<\/code>/is', "$1</span>\n</span>\n</code>", $str);$str = preg_replace('/<span style="color: #[A-Z0-9]+"\><\/span>/i', '', $str);// Replace our markers back to PHP tags.$str = str_replace(array('phptagopen', 'phptagclose', 'asptagopen', 'asptagclose', 'backslashtmp', 'scriptclose'),array('<?', '?>', '<%', '%>', '\\', '</script>'), $str);return $str;}}// ------------------------------------------------------------------------/*** Phrase Highlighter** Highlights a phrase within a text string** @access public* @param string the text string* @param string the phrase you'd like to highlight* @param string the openging tag to precede the phrase with* @param string the closing tag to end the phrase with* @return string*/if ( ! function_exists('highlight_phrase')){function highlight_phrase($str, $phrase, $tag_open = '<strong>', $tag_close = '</strong>'){if ($str == ''){return '';}if ($phrase != ''){return preg_replace('/('.preg_quote($phrase, '/').')/i', $tag_open."\\1".$tag_close, $str);}return $str;}}// ------------------------------------------------------------------------/*** Convert Accented Foreign Characters to ASCII** @access public* @param string the text string* @return string*/if ( ! function_exists('convert_accented_characters')){function convert_accented_characters($str){if (defined('ENVIRONMENT') AND is_file(APPPATH.'config/'.ENVIRONMENT.'/foreign_chars.php')){include(APPPATH.'config/'.ENVIRONMENT.'/foreign_chars.php');}elseif (is_file(APPPATH.'config/foreign_chars.php')){include(APPPATH.'config/foreign_chars.php');}if ( ! isset($foreign_characters)){return $str;}return preg_replace(array_keys($foreign_characters), array_values($foreign_characters), $str);}}// ------------------------------------------------------------------------/*** Word Wrap** Wraps text at the specified character. Maintains the integrity of words.* Anything placed between {unwrap}{/unwrap} will not be word wrapped, nor* will URLs.** @access public* @param string the text string* @param integer the number of characters to wrap at* @return string*/if ( ! function_exists('word_wrap')){function word_wrap($str, $charlim = '76'){// Se the character limitif ( ! is_numeric($charlim))$charlim = 76;// Reduce multiple spaces$str = preg_replace("| +|", " ", $str);// Standardize newlinesif (strpos($str, "\r") !== FALSE){$str = str_replace(array("\r\n", "\r"), "\n", $str);}// If the current word is surrounded by {unwrap} tags we'll// strip the entire chunk and replace it with a marker.$unwrap = array();if (preg_match_all("|(\{unwrap\}.+?\{/unwrap\})|s", $str, $matches)){for ($i = 0; $i < count($matches['0']); $i++){$unwrap[] = $matches['1'][$i];$str = str_replace($matches['1'][$i], "{{unwrapped".$i."}}", $str);}}// Use PHP's native function to do the initial wordwrap.// We set the cut flag to FALSE so that any individual words that are// too long get left alone. In the next step we'll deal with them.$str = wordwrap($str, $charlim, "\n", FALSE);// Split the string into individual lines of text and cycle through them$output = "";foreach (explode("\n", $str) as $line){// Is the line within the allowed character count?// If so we'll join it to the output and continueif (strlen($line) <= $charlim){$output .= $line."\n";continue;}$temp = '';while ((strlen($line)) > $charlim){// If the over-length word is a URL we won't wrap itif (preg_match("!\[url.+\]|://|wwww.!", $line)){break;}// Trim the word down$temp .= substr($line, 0, $charlim-1);$line = substr($line, $charlim-1);}// If $temp contains data it means we had to split up an over-length// word into smaller chunks so we'll add it back to our current lineif ($temp != ''){$output .= $temp."\n".$line;}else{$output .= $line;}$output .= "\n";}// Put our markers backif (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 $output;}}// ------------------------------------------------------------------------/*** Ellipsize String** This function will strip tags from a string, split it at its max_length and ellipsize** @param string string to ellipsize* @param integer max length of string* @param mixed int (1|0) or float, .5, .2, etc for position to split* @param string ellipsis ; Default '...'* @return string ellipsized string*/if ( ! function_exists('ellipsize')){function ellipsize($str, $max_length, $position = 1, $ellipsis = '…'){// Strip tags$str = trim(strip_tags($str));// Is the string long enough to ellipsize?if (strlen($str) <= $max_length){return $str;}$beg = substr($str, 0, floor($max_length * $position));$position = ($position > 1) ? 1 : $position;if ($position === 1){$end = substr($str, 0, -($max_length - strlen($beg)));}else{$end = substr($str, -($max_length - strlen($beg)));}return $beg.$ellipsis.$end;}}/* End of file text_helper.php *//* Location: ./system/helpers/text_helper.php */