diff options
Diffstat (limited to 'system/libraries/Typography.php')
| -rw-r--r-- | system/libraries/Typography.php | 206 |
1 files changed, 106 insertions, 100 deletions
diff --git a/system/libraries/Typography.php b/system/libraries/Typography.php index 734cec104..a50934f2c 100644 --- a/system/libraries/Typography.php +++ b/system/libraries/Typography.php @@ -1,48 +1,82 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /** * CodeIgniter * - * An open source application development framework for PHP 5.1.6 or newer + * An open source application development framework for PHP 5.2.4 or newer + * + * NOTICE OF LICENSE + * + * Licensed under the Open Software License version 3.0 + * + * This source file is subject to the Open Software License (OSL 3.0) that is + * bundled with this package in the files license.txt / license.rst. It is + * also available through the world wide web at this URL: + * http://opensource.org/licenses/OSL-3.0 + * If you did not receive a copy of the license and are unable to obtain it + * through the world wide web, please send an email to + * licensing@ellislab.com so we can send you a copy immediately. * * @package CodeIgniter - * @author ExpressionEngine Dev Team - * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc. - * @license http://codeigniter.com/user_guide/license.html + * @author EllisLab Dev Team + * @copyright Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/) + * @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0) * @link http://codeigniter.com * @since Version 1.0 * @filesource */ -// ------------------------------------------------------------------------ - /** * Typography Class * - * - * @access private + * @package CodeIgniter + * @subpackage Libraries * @category Helpers - * @author ExpressionEngine Dev Team - * @link http://codeigniter.com/user_guide/helpers/ + * @author EllisLab Dev Team + * @link http://codeigniter.com/user_guide/libraries/typography.html */ class CI_Typography { - // Block level elements that should not be wrapped inside <p> tags - var $block_elements = 'address|blockquote|div|dl|fieldset|form|h\d|hr|noscript|object|ol|p|pre|script|table|ul'; + /** + * Block level elements that should not be wrapped inside <p> tags + * + * @var string + */ + public $block_elements = 'address|blockquote|div|dl|fieldset|form|h\d|hr|noscript|object|ol|p|pre|script|table|ul'; - // Elements that should not have <p> and <br /> tags within them. - var $skip_elements = 'p|pre|ol|ul|dl|object|table|h\d'; + /** + * Elements that should not have <p> and <br /> tags within them. + * + * @var string + */ + public $skip_elements = 'p|pre|ol|ul|dl|object|table|h\d'; - // Tags we want the parser to completely ignore when splitting the string. - var $inline_elements = 'a|abbr|acronym|b|bdo|big|br|button|cite|code|del|dfn|em|i|img|ins|input|label|map|kbd|q|samp|select|small|span|strong|sub|sup|textarea|tt|var'; + /** + * Tags we want the parser to completely ignore when splitting the string. + * + * @var string + */ + public $inline_elements = 'a|abbr|acronym|b|bdo|big|br|button|cite|code|del|dfn|em|i|img|ins|input|label|map|kbd|q|samp|select|small|span|strong|sub|sup|textarea|tt|var'; - // array of block level elements that require inner content to be within another block level element - var $inner_block_required = array('blockquote'); + /** + * array of block level elements that require inner content to be within another block level element + * + * @var array + */ + public $inner_block_required = array('blockquote'); - // the last block element parsed - var $last_block_element = ''; + /** + * the last block element parsed + * + * @var string + */ + public $last_block_element = ''; - // whether or not to protect quotes within { curly braces } - var $protect_braced_quotes = FALSE; + /** + * whether or not to protect quotes within { curly braces } + * + * @var bool + */ + public $protect_braced_quotes = FALSE; /** * Auto Typography @@ -55,14 +89,13 @@ class CI_Typography { * - Converts double dashes into em-dashes. * - Converts two spaces into entities * - * @access public * @param string * @param bool whether to reduce more then two consecutive newlines to two * @return string */ - function auto_typography($str, $reduce_linebreaks = FALSE) + public function auto_typography($str, $reduce_linebreaks = FALSE) { - if ($str == '') + if ($str === '') { return ''; } @@ -82,15 +115,12 @@ class CI_Typography { // HTML comment tags don't conform to patterns of normal tags, so pull them out separately, only if needed $html_comments = array(); - if (strpos($str, '<!--') !== FALSE) + if (strpos($str, '<!--') !== FALSE && preg_match_all('#(<!\-\-.*?\-\->)#s', $str, $matches)) { - if (preg_match_all("#(<!\-\-.*?\-\->)#s", $str, $matches)) + for ($i = 0, $total = count($matches[0]); $i < $total; $i++) { - for ($i = 0, $total = count($matches[0]); $i < $total; $i++) - { - $html_comments[] = $matches[0][$i]; - $str = str_replace($matches[0][$i], '{@HC'.$i.'}', $str); - } + $html_comments[] = $matches[0][$i]; + $str = str_replace($matches[0][$i], '{@HC'.$i.'}', $str); } } @@ -98,83 +128,80 @@ class CI_Typography { // not contain <pre> tags, and it keeps the PCRE patterns below simpler and faster if (strpos($str, '<pre') !== FALSE) { - $str = preg_replace_callback("#<pre.*?>.*?</pre>#si", array($this, '_protect_characters'), $str); + $str = preg_replace_callback('#<pre.*?>.*?</pre>#si', array($this, '_protect_characters'), $str); } // Convert quotes within tags to temporary markers. - $str = preg_replace_callback("#<.+?>#si", array($this, '_protect_characters'), $str); + $str = preg_replace_callback('#<.+?>#si', array($this, '_protect_characters'), $str); // Do the same with braces if necessary if ($this->protect_braced_quotes === TRUE) { - $str = preg_replace_callback("#\{.+?\}#si", array($this, '_protect_characters'), $str); + $str = preg_replace_callback('#\{.+?\}#si', array($this, '_protect_characters'), $str); } // Convert "ignore" tags to temporary marker. The parser splits out the string at every tag // it encounters. Certain inline tags, like image tags, links, span tags, etc. will be // adversely affected if they are split out so we'll convert the opening bracket < temporarily to: {@TAG} - $str = preg_replace("#<(/*)(".$this->inline_elements.")([ >])#i", "{@TAG}\\1\\2\\3", $str); - - // Split the string at every tag. This expression creates an array with this prototype: - // - // [array] - // { - // [0] = <opening tag> - // [1] = Content... - // [2] = <closing tag> - // Etc... - // } + $str = preg_replace('#<(/*)('.$this->inline_elements.')([ >])#i', '{@TAG}\\1\\2\\3', $str); + + /* Split the string at every tag. This expression creates an array with this prototype: + * + * [array] + * { + * [0] = <opening tag> + * [1] = Content... + * [2] = <closing tag> + * Etc... + * } + */ $chunks = preg_split('/(<(?:[^<>]+(?:"[^"]*"|\'[^\']*\')?)+>)/', $str, -1, PREG_SPLIT_DELIM_CAPTURE|PREG_SPLIT_NO_EMPTY); // Build our finalized string. We cycle through the array, skipping tags, and processing the contained text $str = ''; $process = TRUE; $paragraph = FALSE; - $current_chunk = 0; - $total_chunks = count($chunks); - foreach ($chunks as $chunk) + for ($i = 0, $c = count($chunks) - 1; $i <= $c; $i++) { - $current_chunk++; - // Are we dealing with a tag? If so, we'll skip the processing for this cycle. // Well also set the "process" flag which allows us to skip <pre> tags and a few other things. - if (preg_match("#<(/*)(".$this->block_elements.").*?>#", $chunk, $match)) + if (preg_match('#<(/*)('.$this->block_elements.').*?>#', $chunks[$i], $match)) { - if (preg_match("#".$this->skip_elements."#", $match[2])) + if (preg_match('#'.$this->skip_elements.'#', $match[2])) { - $process = ($match[1] == '/') ? TRUE : FALSE; + $process = ($match[1] === '/'); } - if ($match[1] == '') + if ($match[1] === '') { $this->last_block_element = $match[2]; } - $str .= $chunk; + $str .= $chunks[$i]; continue; } - if ($process == FALSE) + if ($process === FALSE) { - $str .= $chunk; + $str .= $chunks[$i]; continue; } // Force a newline to make sure end tags get processed by _format_newlines() - if ($current_chunk == $total_chunks) + if ($i === $c) { - $chunk .= "\n"; + $chunks[$i] .= "\n"; } // Convert Newlines into <p> and <br /> tags - $str .= $this->_format_newlines($chunk); + $str .= $this->_format_newlines($chunks[$i]); } - // No opening block level tag? Add it if needed. - if ( ! preg_match("/^\s*<(?:".$this->block_elements.")/i", $str)) + // No opening block level tag? Add it if needed. + if ( ! preg_match('/^\s*<(?:'.$this->block_elements.')/i', $str)) { - $str = preg_replace("/^(.*?)<(".$this->block_elements.")/i", '<p>$1</p><$2', $str); + $str = preg_replace('/^(.*?)<('.$this->block_elements.')/i', '<p>$1</p><$2', $str); } // Convert quotes, elipsis, em-dashes, non-breaking spaces, and ampersands @@ -221,7 +248,7 @@ class CI_Typography { // Similarly, there might be cases where a closing </block> will follow // a closing </p> tag, so we'll correct it by adding a newline in between - "#</p></#" => "</p>\n</" + '#</p></#' => "</p>\n</" ); // Do we need to reduce empty lines? @@ -249,11 +276,10 @@ class CI_Typography { * to curly entities, but it also converts em-dashes, * double spaces, and ampersands * - * @access public * @param string * @return string */ - function format_characters($str) + public function format_characters($str) { static $table; @@ -313,18 +339,12 @@ class CI_Typography { * * Converts newline characters into either <p> tags or <br /> * - * @access public * @param string * @return string */ - function _format_newlines($str) + protected function _format_newlines($str) { - if ($str == '') - { - return $str; - } - - if (strpos($str, "\n") === FALSE && ! in_array($this->last_block_element, $this->inner_block_required)) + if ($str === '' OR (strpos($str, "\n") === FALSE && ! in_array($this->last_block_element, $this->inner_block_required))) { return $str; } @@ -333,10 +353,10 @@ class CI_Typography { $str = str_replace("\n\n", "</p>\n\n<p>", $str); // Convert single spaces to <br /> tags - $str = preg_replace("/([^\n])(\n)([^\n])/", "\\1<br />\\2\\3", $str); + $str = preg_replace("/([^\n])(\n)([^\n])/", '\\1<br />\\2\\3', $str); // Wrap the whole enchilada in enclosing paragraphs - if ($str != "\n") + if ($str !== "\n") { // We trim off the right-side new line so that the closing </p> tag // will be positioned immediately following the string, matching @@ -346,9 +366,7 @@ class CI_Typography { // Remove empty paragraphs if they are on the first line, as this // is a potential unintended consequence of the previous code - $str = preg_replace("/<p><\/p>(.*)/", "\\1", $str, 1); - - return $str; + return preg_replace('/<p><\/p>(.*)/', '\\1', $str, 1); } // ------------------------------------------------------------------------ @@ -361,11 +379,10 @@ class CI_Typography { * and we don't want double dashes converted to emdash entities, so they are marked with {@DD} * likewise double spaces are converted to {@NBS} to prevent entity conversion * - * @access public * @param array * @return string */ - function _protect_characters($match) + protected function _protect_characters($match) { return str_replace(array("'",'"','--',' '), array('{@SQ}', '{@DQ}', '{@DD}', '{@NBS}'), $match[0]); } @@ -375,36 +392,25 @@ class CI_Typography { /** * Convert newlines to HTML line breaks except within PRE tags * - * @access public * @param string * @return string */ - function nl2br_except_pre($str) + public function nl2br_except_pre($str) { - $ex = explode("pre>",$str); - $ct = count($ex); - - $newstr = ""; - for ($i = 0; $i < $ct; $i++) + $newstr = ''; + for ($ex = explode('pre>', $str), $ct = count($ex), $i = 0; $i < $ct; $i++) { - if (($i % 2) == 0) - { - $newstr .= nl2br($ex[$i]); - } - else + $newstr .= (($i % 2) === 0) ? nl2br($ex[$i]) : $ex[$i]; + if ($ct - 1 !== $i) { - $newstr .= $ex[$i]; + $newstr .= 'pre>'; } - - if ($ct - 1 != $i) - $newstr .= "pre>"; } return $newstr; } } -// END Typography Class /* End of file Typography.php */ /* Location: ./system/libraries/Typography.php */
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