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proc
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thread-self
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root
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home
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papecmvm
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public_html
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system
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helpers
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files >> //proc/thread-self/root/home/papecmvm/public_html/system/helpers/text_helper.php
<?php /** * CodeIgniter * * An open source application development framework for PHP * * This content is released under the MIT License (MIT) * * Copyright (c) 2014 - 2019, British Columbia Institute of Technology * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. * * @package CodeIgniter * @author EllisLab Dev Team * @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/) * @copyright Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/) * @license https://opensource.org/licenses/MIT MIT License * @link https://codeigniter.com * @since Version 1.0.0 * @filesource */ defined('BASEPATH') OR exit('No direct script access allowed'); /** * CodeIgniter Text Helpers * * @package CodeIgniter * @subpackage Helpers * @category Helpers * @author EllisLab Dev Team * @link https://codeigniter.com/user_guide/helpers/text_helper.html */ // ------------------------------------------------------------------------ if ( ! function_exists('word_limiter')) { /** * Word Limiter * * Limits a string to X number of words. * * @param string * @param int * @param string the end character. Usually an ellipsis * @return string */ 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]).$end_char; } } // ------------------------------------------------------------------------ if ( ! function_exists('character_limiter')) { /** * Character Limiter * * Limits the string based on the character count. Preserves complete words * so the character count may not be exactly as specified. * * @param string * @param int * @param string the end character. Usually an ellipsis * @return string */ function character_limiter($str, $n = 500, $end_char = '…') { if (mb_strlen($str) < $n) { return $str; } // a bit complicated, but faster than preg_replace with \s+ $str = preg_replace('/ {2,}/', ' ', str_replace(array("\r", "\n", "\t", "\v", "\f"), ' ', $str)); if (mb_strlen($str) <= $n) { return $str; } $out = ''; foreach (explode(' ', trim($str)) as $val) { $out .= $val.' '; if (mb_strlen($out) >= $n) { $out = trim($out); return (mb_strlen($out) === mb_strlen($str)) ? $out : $out.$end_char; } } } } // ------------------------------------------------------------------------ if ( ! function_exists('ascii_to_entities')) { /** * High ASCII to Entities * * Converts high ASCII text and MS Word special characters to character entities * * @param string $str * @return string */ function ascii_to_entities($str) { $out = ''; $length = defined('MB_OVERLOAD_STRING') ? mb_strlen($str, '8bit') - 1 : strlen($str) - 1; for ($i = 0, $count = 1, $temp = array(); $i <= $length; $i++) { $ordinal = ord($str[$i]); if ($ordinal < 128) { /* If the $temp array has a value but we have moved on, then it seems only fair 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; $temp = array(); } // If this is the last iteration, just output whatever we have elseif ($i === $length) { $out .= '&#'.implode(';', $temp).';'; } } } return $out; } } // ------------------------------------------------------------------------ if ( ! function_exists('entities_to_ascii')) { /** * Entities to ASCII * * Converts character entities back to ASCII * * @param string * @param bool * @return string */ function entities_to_ascii($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 - ($digits % 64)) / 64)).chr(128 + ($digits % 64)); } else { $out .= chr(224 + (($digits - ($digits % 4096)) / 4096)) .chr(128 + ((($digits % 4096) - ($digits % 64)) / 64)) .chr(128 + ($digits % 64)); } $str = str_replace($matches[0][$i], $out, $str); } } if ($all) { return str_replace( array('&', '<', '>', '"', ''', '-'), array('&', '<', '>', '"', "'", '-'), $str ); } return $str; } } // ------------------------------------------------------------------------ if ( ! function_exists('word_censor')) { /** * Word Censoring Function * * Supply a string and an array of disallowed words and any * matched words will be converted to #### or to the replacement * word you've submitted. * * @param string the text string * @param string the array of censored words * @param string the optional replacement value * @return string */ function word_censor($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) { $badword = str_replace('\*', '\w*?', preg_quote($badword, '/')); if ($replacement !== '') { $str = preg_replace( "/({$delim})(".$badword.")({$delim})/i", "\\1{$replacement}\\3", $str ); } elseif (preg_match_all("/{$delim}(".$badword."){$delim}/i", $str, $matches, PREG_PATTERN_ORDER | PREG_OFFSET_CAPTURE)) { $matches = $matches[1]; for ($i = count($matches) - 1; $i >= 0; $i--) { $length = strlen($matches[$i][0]); $str = substr_replace( $str, str_repeat('#', $length), $matches[$i][1], $length ); } } } return trim($str); } } // ------------------------------------------------------------------------ if ( ! function_exists('highlight_code')) { /** * Code Highlighter * * Colorizes code strings * * @param string the text string * @return string */ function highlight_code($str) { /* The highlight string function encodes and highlights * brackets so we need them to start raw. * * Also 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 $str = highlight_string('<?php '.$str.' ?>', TRUE); // Remove our artificially added PHP, and the syntax highlighting that came with it $str = preg_replace( array( '/<span style="color: #([A-Z0-9]+)"><\?php( | )/i', '/(<span style="color: #[A-Z0-9]+">.*?)\?><\/span>\n<\/span>\n<\/code>/is', '/<span style="color: #[A-Z0-9]+"\><\/span>/i' ), array( '<span style="color: #$1">', "$1</span>\n</span>\n</code>", '' ), $str ); // Replace our markers back to PHP tags. return str_replace( array('phptagopen', 'phptagclose', 'asptagopen', 'asptagclose', 'backslashtmp', 'scriptclose'), array('<?', '?>', '<%', '%>', '\\', '</script>'), $str ); } } // ------------------------------------------------------------------------ if ( ! function_exists('highlight_phrase')) { /** * Phrase Highlighter * * Highlights a phrase within a text string * * @param string $str the text string * @param string $phrase the phrase you'd like to highlight * @param string $tag_open the openging tag to precede the phrase with * @param string $tag_close the closing tag to end the phrase with * @return string */ function highlight_phrase($str, $phrase, $tag_open = '<mark>', $tag_close = '</mark>') { return ($str !== '' && $phrase !== '') ? preg_replace('/('.preg_quote($phrase, '/').')/i'.(UTF8_ENABLED ? 'u' : ''), $tag_open.'\\1'.$tag_close, $str) : $str; } } // ------------------------------------------------------------------------ if ( ! function_exists('convert_accented_characters')) { /** * Convert Accented Foreign Characters to ASCII * * @param string $str Input string * @return string */ function convert_accented_characters($str) { static $array_from, $array_to; if ( ! is_array($array_from)) { if (file_exists(APPPATH.'config/foreign_chars.php')) { include(APPPATH.'config/foreign_chars.php'); } if (file_exists(APPPATH.'config/'.ENVIRONMENT.'/foreign_chars.php')) { include(APPPATH.'config/'.ENVIRONMENT.'/foreign_chars.php'); } if (empty($foreign_characters) OR ! is_array($foreign_characters)) { $array_from = array(); $array_to = array(); return $str; } $array_from = array_keys($foreign_characters); $array_to = array_values($foreign_characters); } return preg_replace($array_from, $array_to, $str); } } // ------------------------------------------------------------------------ if ( ! function_exists('word_wrap')) { /** * 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. * * @param string $str the text string * @param int $charlim = 76 the number of characters to wrap at * @return string */ function word_wrap($str, $charlim = 76) { // Set the character limit is_numeric($charlim) OR $charlim = 76; // Reduce multiple spaces $str = preg_replace('| +|', ' ', $str); // Standardize newlines if (strpos($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, $c = count($matches[0]); $i < $c; $i++) { $unwrap[] = $matches[1][$i]; $str = str_replace($matches[0][$i], '{{unwrapped'.$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 $line) { // Is the line within the allowed character count? // If so we'll join it to the output and continue if (mb_strlen($line) <= $charlim) { $output .= $line."\n"; continue; } $temp = ''; while (mb_strlen($line) > $charlim) { // If the over-length word is a URL we won't wrap it if (preg_match('!\[url.+\]|://|www\.!', $line)) { break; } // Trim the word down $temp .= mb_substr($line, 0, $charlim - 1); $line = mb_substr($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."\n"; } else { $output .= $line."\n"; } } // Put our markers back if (count($unwrap) > 0) { foreach ($unwrap as $key => $val) { $output = str_replace('{{unwrapped'.$key.'}}', $val, $output); } } return $output; } } // ------------------------------------------------------------------------ if ( ! function_exists('ellipsize')) { /** * Ellipsize String * * This function will strip tags from a string, split it at its max_length and ellipsize * * @param string string to ellipsize * @param int max length of string * @param mixed int (1|0) or float, .5, .2, etc for position to split * @param string ellipsis ; Default '...' * @return string ellipsized string */ function ellipsize($str, $max_length, $position = 1, $ellipsis = '…') { // Strip tags $str = trim(strip_tags($str)); // Is the string long enough to ellipsize? if (mb_strlen($str) <= $max_length) { return $str; } $beg = mb_substr($str, 0, floor($max_length * $position)); $position = ($position > 1) ? 1 : $position; if ($position === 1) { $end = mb_substr($str, 0, -($max_length - mb_strlen($beg))); } else { $end = mb_substr($str, -($max_length - mb_strlen($beg))); } return $beg.$ellipsis.$end; } }
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