diff options
Diffstat (limited to 'system/helpers/text_helper.php')
| -rw-r--r-- | system/helpers/text_helper.php | 359 |
1 files changed, 183 insertions, 176 deletions
diff --git a/system/helpers/text_helper.php b/system/helpers/text_helper.php index cc501c334..cce659231 100644 --- a/system/helpers/text_helper.php +++ b/system/helpers/text_helper.php @@ -1,4 +1,4 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php /** * CodeIgniter * @@ -24,6 +24,7 @@ * @since Version 1.0 * @filesource */ +defined('BASEPATH') OR exit('No direct script access allowed'); /** * CodeIgniter Text Helpers @@ -37,28 +38,28 @@ // ------------------------------------------------------------------------ -/** - * Word Limiter - * - * Limits a string to X number of words. - * - * @param string - * @param int - * @param string the end character. Usually an ellipsis - * @return string - */ 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) == '') + if (trim($str) === '') { return $str; } preg_match('/^\s*+(?:\S++\s*+){1,'.(int) $limit.'}/', $str, $matches); - if (strlen($str) == strlen($matches[0])) + if (strlen($str) === strlen($matches[0])) { $end_char = ''; } @@ -69,19 +70,19 @@ if ( ! function_exists('word_limiter')) // ------------------------------------------------------------------------ -/** - * Character Limiter - * - * Limits the string based on the character count. Preserves complete words - * so the character count may not be exactly as specified. - * - * @param string - * @param int - * @param string the end character. Usually an ellipsis - * @return string - */ if ( ! function_exists('character_limiter')) { + /** + * Character Limiter + * + * Limits the string based on the character count. Preserves complete words + * so the character count may not be exactly as specified. + * + * @param string + * @param int + * @param string the end character. Usually an ellipsis + * @return string + */ function character_limiter($str, $n = 500, $end_char = '…') { if (strlen($str) < $n) @@ -89,14 +90,15 @@ if ( ! function_exists('character_limiter')) return $str; } - $str = preg_replace("/\s+/", ' ', str_replace(array("\r\n", "\r", "\n"), ' ', $str)); + // a bit complicated, but faster than preg_replace with \s+ + $str = preg_replace('/ {2,}/', ' ', str_replace(array("\r", "\n", "\t", "\x0B", "\x0C"), ' ', $str)); if (strlen($str) <= $n) { return $str; } - $out = ""; + $out = ''; foreach (explode(' ', trim($str)) as $val) { $out .= $val.' '; @@ -104,7 +106,7 @@ if ( ! function_exists('character_limiter')) if (strlen($out) >= $n) { $out = trim($out); - return (strlen($out) == strlen($str)) ? $out : $out.$end_char; + return (strlen($out) === strlen($str)) ? $out : $out.$end_char; } } } @@ -112,23 +114,20 @@ if ( ! function_exists('character_limiter')) // ------------------------------------------------------------------------ -/** - * High ASCII to Entities - * - * Converts High ascii text and MS Word special characters to character entities - * - * @param string - * @return string - */ 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) { - $count = 1; - $out = ''; - $temp = array(); - - for ($i = 0, $s = strlen($str); $i < $s; $i++) + $out = ''; + for ($i = 0, $s = strlen($str), $count = 1, $temp = array(); $i < $s; $i++) { $ordinal = ord($str[$i]); @@ -138,7 +137,7 @@ if ( ! function_exists('ascii_to_entities')) 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) + if (count($temp) === 1) { $out .= '&#'.array_shift($temp).';'; $count = 1; @@ -148,16 +147,18 @@ if ( ! function_exists('ascii_to_entities')) } else { - if (count($temp) == 0) + if (count($temp) === 0) { $count = ($ordinal < 224) ? 2 : 3; } $temp[] = $ordinal; - if (count($temp) == $count) + if (count($temp) === $count) { - $number = ($count == 3) ? (($temp['0'] % 16) * 4096) + (($temp['1'] % 64) * 64) + ($temp['2'] % 64) : (($temp['0'] % 32) * 64) + ($temp['1'] % 64); + $number = ($count === 3) + ? (($temp[0] % 16) * 4096) + (($temp[1] % 64) * 64) + ($temp[2] % 64) + : (($temp[0] % 32) * 64) + ($temp[1] % 64); $out .= '&#'.$number.';'; $count = 1; @@ -172,25 +173,24 @@ if ( ! function_exists('ascii_to_entities')) // ------------------------------------------------------------------------ -/** - * Entities to ASCII - * - * Converts character entities back to ASCII - * - * @param string - * @param bool - * @return string - */ if ( ! function_exists('entities_to_ascii')) { + /** + * Entities to ASCII + * + * Converts character entities back to ASCII + * + * @param string + * @param bool + * @return string + */ function entities_to_ascii($str, $all = TRUE) { if (preg_match_all('/\&#(\d+)\;/', $str, $matches)) { - for ($i = 0, $s = count($matches['0']); $i < $s; $i++) + for ($i = 0, $s = count($matches[0]); $i < $s; $i++) { - $digits = $matches['1'][$i]; - + $digits = $matches[1][$i]; $out = ''; if ($digits < 128) @@ -200,25 +200,24 @@ if ( ! function_exists('entities_to_ascii')) } elseif ($digits < 2048) { - $out .= chr(192 + (($digits - ($digits % 64)) / 64)); - $out .= chr(128 + ($digits % 64)); + $out .= chr(192 + (($digits - ($digits % 64)) / 64)).chr(128 + ($digits % 64)); } else { - $out .= chr(224 + (($digits - ($digits % 4096)) / 4096)); - $out .= chr(128 + ((($digits % 4096) - ($digits % 64)) / 64)); - $out .= chr(128 + ($digits % 64)); + $out .= chr(224 + (($digits - ($digits % 4096)) / 4096)) + .chr(128 + ((($digits % 4096) - ($digits % 64)) / 64)) + .chr(128 + ($digits % 64)); } - $str = str_replace($matches['0'][$i], $out, $str); + $str = str_replace($matches[0][$i], $out, $str); } } if ($all) { - $str = str_replace(array("&", "<", ">", """, "'", "-"), - array("&","<",">","\"", "'", "-"), - $str); + return str_replace(array('&', '<', '>', '"', ''', '-'), + array('&', '<', '>', '"', "'", '-'), + $str); } return $str; @@ -227,20 +226,20 @@ if ( ! function_exists('entities_to_ascii')) // ------------------------------------------------------------------------ -/** - * Word Censoring Function - * - * Supply a string and an array of disallowed words and any - * matched words will be converted to #### or to the replacement - * word you've submitted. - * - * @param string the text string - * @param string the array of censoered words - * @param string the optional replacement value - * @return string - */ if ( ! function_exists('word_censor')) { + /** + * Word Censoring Function + * + * Supply a string and an array of disallowed words and any + * matched words will be converted to #### or to the replacement + * word you've submitted. + * + * @param string the text string + * @param string the array of censoered words + * @param string the optional replacement value + * @return string + */ function word_censor($str, $censored, $replacement = '') { if ( ! is_array($censored)) @@ -258,7 +257,7 @@ if ( ! function_exists('word_censor')) foreach ($censored as $badword) { - if ($replacement != '') + if ($replacement !== '') { $str = preg_replace("/({$delim})(".str_replace('\*', '\w*?', preg_quote($badword, '/')).")({$delim})/i", "\\1{$replacement}\\3", $str); } @@ -274,39 +273,45 @@ if ( ! function_exists('word_censor')) // ------------------------------------------------------------------------ -/** - * Code Highlighter - * - * Colorizes code strings - * - * @param string the text string - * @return string - */ if ( ! function_exists('highlight_code')) { + /** + * Code Highlighter + * + * Colorizes code strings + * + * @param string the text string + * @return string + */ function highlight_code($str) { - // The highlight string function encodes and highlights - // brackets so we need them to start raw - $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'), + /* 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 - $str = '<?php '.$str.' ?>'; // <? - - // All the magic happens here, baby! - $str = highlight_string($str, TRUE); + $str = highlight_string('<?php '.$str.' ?>', TRUE); // 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); + $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>", + '' + ), + $str); // Replace our markers back to PHP tags. return str_replace(array('phptagopen', 'phptagclose', 'asptagopen', 'asptagclose', 'backslashtmp', 'scriptclose'), @@ -317,29 +322,29 @@ if ( ! function_exists('highlight_code')) // ------------------------------------------------------------------------ -/** - * Phrase Highlighter - * - * Highlights a phrase within a text string - * - * @param string the text string - * @param string the phrase you'd like to highlight - * @param string the openging tag to precede the phrase with - * @param string the closing tag to end the phrase with - * @return string - */ if ( ! function_exists('highlight_phrase')) { + /** + * Phrase Highlighter + * + * Highlights a phrase within a text string + * + * @param string the text string + * @param string the phrase you'd like to highlight + * @param string the openging tag to precede the phrase with + * @param string the closing tag to end the phrase with + * @return string + */ function highlight_phrase($str, $phrase, $tag_open = '<strong>', $tag_close = '</strong>') { - if ($str == '') + if ($str === '') { return ''; } - if ($phrase != '') + if ($phrase !== '') { - return preg_replace('/('.preg_quote($phrase, '/').')/i', $tag_open."\\1".$tag_close, $str); + return preg_replace('/('.preg_quote($phrase, '/').')/i', $tag_open.'\\1'.$tag_close, $str); } return $str; @@ -348,28 +353,33 @@ if ( ! function_exists('highlight_phrase')) // ------------------------------------------------------------------------ -/** - * Convert Accented Foreign Characters to ASCII - * - * @param string the text string - * @return string - */ if ( ! function_exists('convert_accented_characters')) { + /** + * Convert Accented Foreign Characters to ASCII + * + * @param string the text string + * @return string + */ function convert_accented_characters($str) { - if (defined('ENVIRONMENT') && 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'); - } + global $foreign_characters; - if ( ! isset($foreign_characters)) + if ( ! isset($foreign_characters) OR ! is_array($foreign_characters)) { - return $str; + if (defined('ENVIRONMENT') && is_file(APPPATH.'config/'.ENVIRONMENT.'/foreign_chars.php')) + { + include(APPPATH.'config/'.ENVIRONMENT.'/foreign_chars.php'); + } + elseif (is_file(APPPATH.'config/foreign_chars.php')) + { + include(APPPATH.'config/foreign_chars.php'); + } + + if ( ! isset($foreign_characters) OR ! is_array($foreign_characters)) + { + return $str; + } } return preg_replace(array_keys($foreign_characters), array_values($foreign_characters), $str); @@ -378,27 +388,29 @@ if ( ! function_exists('convert_accented_characters')) // ------------------------------------------------------------------------ -/** - * Word Wrap - * - * Wraps text at the specified character. Maintains the integrity of words. - * Anything placed between {unwrap}{/unwrap} will not be word wrapped, nor - * will URLs. - * - * @param string the text string - * @param int the number of characters to wrap at - * @return string - */ if ( ! function_exists('word_wrap')) { - function word_wrap($str, $charlim = '76') + /** + * 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, $charlim = 76) { - // Se the character limit + // Set the character limit if ( ! is_numeric($charlim)) + { $charlim = 76; + } // Reduce multiple spaces - $str = preg_replace("| +|", " ", $str); + $str = preg_replace('| +|', ' ', $str); // Standardize newlines if (strpos($str, "\r") !== FALSE) @@ -409,22 +421,22 @@ if ( ! function_exists('word_wrap')) // 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)) + if (preg_match_all('|(\{unwrap\}.+?\{/unwrap\})|s', $str, $matches)) { - for ($i = 0; $i < count($matches['0']); $i++) + for ($i = 0, $c = count($matches[0]); $i < $c; $i++) { - $unwrap[] = $matches['1'][$i]; - $str = str_replace($matches['1'][$i], "{{unwrapped".$i."}}", $str); + $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. + // 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 = ""; + $output = ''; foreach (explode("\n", $str) as $line) { // Is the line within the allowed character count? @@ -439,28 +451,26 @@ if ( ! function_exists('word_wrap')) while ((strlen($line)) > $charlim) { // If the over-length word is a URL we won't wrap it - if (preg_match("!\[url.+\]|://|wwww.!", $line)) + if (preg_match('!\[url.+\]|://|wwww.!', $line)) { break; } // Trim the word down - $temp .= substr($line, 0, $charlim-1); - $line = substr($line, $charlim-1); + $temp .= substr($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 != '') + if ($temp !== '') { - $output .= $temp."\n".$line; + $output .= $temp."\n".$line."\n"; } else { - $output .= $line; + $output .= $line."\n"; } - - $output .= "\n"; } // Put our markers back @@ -468,32 +478,30 @@ if ( ! function_exists('word_wrap')) { foreach ($unwrap as $key => $val) { - $output = str_replace("{{unwrapped".$key."}}", $val, $output); + $output = str_replace('{{unwrapped'.$key.'}}', $val, $output); } } - // Remove the unwrap tags - $output = str_replace(array('{unwrap}', '{/unwrap}'), '', $output); - - return $output; + // Remove the unwrap tags and return + return str_replace(array('{unwrap}', '{/unwrap}'), '', $output); } } // ------------------------------------------------------------------------ -/** - * Ellipsize String - * - * This function will strip tags from a string, split it at its max_length and ellipsize - * - * @param string string to ellipsize - * @param int max length of string - * @param mixed int (1|0) or float, .5, .2, etc for position to split - * @param string ellipsis ; Default '...' - * @return string ellipsized string - */ if ( ! function_exists('ellipsize')) { + /** + * Ellipsize String + * + * This function will strip tags from a string, split it at its max_length and ellipsize + * + * @param string string to ellipsize + * @param int max length of string + * @param mixed int (1|0) or float, .5, .2, etc for position to split + * @param string ellipsis ; Default '...' + * @return string ellipsized string + */ function ellipsize($str, $max_length, $position = 1, $ellipsis = '…') { // Strip tags @@ -506,7 +514,6 @@ if ( ! function_exists('ellipsize')) } $beg = substr($str, 0, floor($max_length * $position)); - $position = ($position > 1) ? 1 : $position; if ($position === 1) |