Initial Import
diff --git a/system/helpers/typography_helper.php b/system/helpers/typography_helper.php
new file mode 100644
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+++ b/system/helpers/typography_helper.php
@@ -0,0 +1,490 @@
+<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * Code Igniter
+ *
+ * An open source application development framework for PHP 4.3.2 or newer
+ *
+ * @package CodeIgniter
+ * @author Rick Ellis
+ * @copyright Copyright (c) 2006, pMachine, Inc.
+ * @license http://www.codeignitor.com/user_guide/license.html
+ * @link http://www.codeigniter.com
+ * @since Version 1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * Code Igniter Typography Helpers
+ *
+ * @package CodeIgniter
+ * @subpackage Helpers
+ * @category Helpers
+ * @author Rick Ellis
+ * @link http://www.codeigniter.com/user_guide/helpers/typography_helper.html
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * Convert newlines to HTML line breaks except within PRE tags
+ *
+ * @access public
+ * @param string
+ * @return string
+ */
+function nl2br_except_pre($str)
+{
+ $ex = explode("pre>",$str);
+ $ct = count($ex);
+
+ $newstr = "";
+ for ($i = 0; $i < $ct; $i++)
+ {
+ if (($i % 2) == 0)
+ {
+ $newstr .= nl2br($ex[$i]);
+ }
+ else
+ {
+ $newstr .= $ex[$i];
+ }
+
+ if ($ct - 1 != $i)
+ $newstr .= "pre>";
+ }
+
+ return $newstr;
+}
+
+// ------------------------------------------------------------------------
+
+/**
+ * Auto Typography Wrapper Function
+ *
+ *
+ * @access public
+ * @parm string
+ * @return string
+ */
+function auto_typography($str)
+{
+ $TYPE = new Auto_typography();
+ return $TYPE->convert($str);
+}
+
+// ------------------------------------------------------------------------
+
+/**
+ * Auto Typography Class
+ *
+ *
+ * @access private
+ * @category Helpers
+ * @author Rick Ellis
+ * @author Paul Burdick
+ * @link http://www.codeigniter.com/user_guide/helpers/
+ */
+class Auto_typography {
+
+ // Block level elements that should not be wrapped inside <p> tags
+ var $block_elements = 'div|blockquote|pre|code|h\d|script|ol|un';
+
+ // Elements that should not have <p> and <br /> tags within them.
+ var $skip_elements = 'pre|ol|ul';
+
+ // Tags we want the parser to completely ignore when splitting the string.
+ var $ignore_elements = 'a|b|i|em|strong|span|img|li';
+
+
+ /**
+ * Main Processing Function
+ *
+ */
+ function convert($str)
+ {
+ if ($str == '')
+ {
+ return '';
+ }
+
+ $str = ' '.$str.' ';
+
+ // Standardize Newlines to make matching easier
+ $str = preg_replace("/(\r\n|\r)/", "\n", $str);
+
+ /*
+ * Reduce line breaks
+ *
+ * If there are more than two consecutive line
+ * breaks we'll compress them down to a maximum
+ * of two since there's no benefit to more.
+ *
+ */
+ $str = preg_replace("/\n\n+/", "\n\n", $str);
+
+ /*
+ * Convert quotes within tags to tempoarary marker
+ *
+ * We don't want quotes converted within
+ * tags so we'll temporarily convert them to
+ * {{{DQ}}} and {{{SQ}}}
+ *
+ */
+ if (preg_match_all("#\<.+?>#si", $str, $matches))
+ {
+ for ($i = 0; $i < count($matches['0']); $i++)
+ {
+ $str = str_replace($matches['0'][$i],
+ str_replace(array("'",'"'), array('{{{SQ}}}', '{{{DQ}}}'), $matches['0'][$i]),
+ $str);
+ }
+ }
+
+ /*
+ * Convert "ignore" tags to tempoarary 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 < temporarily to: {{{tag}}}
+ *
+ */
+ $str = preg_replace("#<(/*)(".$this->ignore_elements.")#i", "{{{tag}}}\\1\\2", $str);
+
+ /*
+ * Split the string at every tag
+ *
+ * This creates an array with this prototype:
+ *
+ * [array]
+ * {
+ * [0] = <opening tag>
+ * [1] = Content contained between the tags
+ * [2] = <closing tag>
+ * Etc...
+ * }
+ *
+ */
+ $chunks = preg_split('/(<(?:[^<>]+(?:"[^"]*"|\'[^\']*\')?)+>)/', $str, -1, PREG_SPLIT_DELIM_CAPTURE|PREG_SPLIT_NO_EMPTY);
+
+ /*
+ * Build our finalized string
+ *
+ * We'll cycle through the array, skipping tags,
+ * and processing the contained text
+ *
+ */
+ $str = '';
+ $process = TRUE;
+ foreach ($chunks as $chunk)
+ {
+ /*
+ * Are we dealing with a tag?
+ *
+ * If so, we'll skip the processing for this cycle.
+ * Well also set the "process" flag which allows us
+ * to skip <pre> tags and a few other things.
+ *
+ */
+ if (preg_match("#<(/*)(".$this->block_elements.").*?\>#", $chunk, $match))
+ {
+ if (preg_match("#".$this->skip_elements."#", $match['2']))
+ {
+ $process = ($match['1'] == '/') ? TRUE : FALSE;
+ }
+
+ $str .= $chunk;
+ continue;
+ }
+
+ if ($process == FALSE)
+ {
+ $str .= $chunk;
+ continue;
+ }
+
+ // Convert Newlines into <p> and <br /> tags
+ $str .= $this->format_newlines($chunk);
+ }
+
+ // Convert Quotes and other characters
+ $str = $this->format_characters($str);
+
+ // We'll swap our temporary markers back and do some clean up.
+ $str = preg_replace('#(<p>\n*</p>)#', '', $str);
+ $str = preg_replace('#(<p.*?>)<p>#', "\\1", $str);
+
+ $str = str_replace(
+ array('</p></p>', '</p><p>', '{{{tag}}}', '{{{DQ}}}', '{{{SQ}}}'),
+ array('</p>', '<p>', '<', '"', "'"),
+ $str
+ );
+
+ return trim($str);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Format Characters
+ *
+ * This function mainly converts double and single quotes
+ * to entities, but since these are directional, it does
+ * it based on some rules. It also converts em-dashes
+ * and a couple other things.
+ */
+ function format_characters($str)
+ {
+ $table = array(
+ ' "' => " “",
+ '" ' => "” ",
+ " '" => " ‘",
+ "' " => "’ ",
+
+ '>"' => ">“",
+ '"<' => "”<",
+ ">'" => ">‘",
+ "'<" => "’<",
+
+ "\"." => "”.",
+ "\"," => "”,",
+ "\";" => "”;",
+ "\":" => "”:",
+ "\"!" => "”!",
+ "\"?" => "”?",
+
+ ". " => ". ",
+ "? " => "? ",
+ "! " => "! ",
+ ": " => ": ",
+ );
+
+ // These deal with quotes within quotes, like: "'hi here'"
+ $start = 0;
+ $space = array("\n", "\t", " ");
+
+ while(TRUE)
+ {
+ $current = strpos(substr($str, $start), "\"'");
+
+ if ($current === FALSE) break;
+
+ $one_before = substr($str, $start+$current-1, 1);
+ $one_after = substr($str, $start+$current+2, 1);
+
+ if ( ! in_array($one_after, $space) && $one_after != "<")
+ {
+ $str = str_replace( $one_before."\"'".$one_after,
+ $one_before."“‘".$one_after,
+ $str);
+ }
+ elseif ( ! in_array($one_before, $space) && (in_array($one_after, $space) OR $one_after == '<'))
+ {
+ $str = str_replace( $one_before."\"'".$one_after,
+ $one_before."”’".$one_after,
+ $str);
+ }
+
+ $start = $start+$current+2;
+ }
+
+ $start = 0;
+
+ while(TRUE)
+ {
+ $current = strpos(substr($str, $start), "'\"");
+
+ if ($current === FALSE) break;
+
+ $one_before = substr($str, $start+$current-1, 1);
+ $one_after = substr($str, $start+$current+2, 1);
+
+ if ( in_array($one_before, $space) && ! in_array($one_after, $space) && $one_after != "<")
+ {
+ $str = str_replace( $one_before."'\"".$one_after,
+ $one_before."‘“".$one_after,
+ $str);
+ }
+ elseif ( ! in_array($one_before, $space) && $one_before != ">")
+ {
+ $str = str_replace( $one_before."'\"".$one_after,
+ $one_before."’”".$one_after,
+ $str);
+ }
+
+ $start = $start+$current+2;
+ }
+
+ // Are there quotes within a word, as in: ("something")
+ if (preg_match_all("/(.)\"(\S+?)\"(.)/", $str, $matches))
+ {
+ for ($i=0, $s=sizeof($matches['0']); $i < $s; ++$i)
+ {
+ if ( ! in_array($matches['1'][$i], $space) && ! in_array($matches['3'][$i], $space))
+ {
+ $str = str_replace( $matches['0'][$i],
+ $matches['1'][$i]."“".$matches['2'][$i]."”".$matches['3'][$i],
+ $str);
+ }
+ }
+ }
+
+ if (preg_match_all("/(.)\'(\S+?)\'(.)/", $str, $matches))
+ {
+ for ($i=0, $s=sizeof($matches['0']); $i < $s; ++$i)
+ {
+ if ( ! in_array($matches['1'][$i], $space) && ! in_array($matches['3'][$i], $space))
+ {
+ $str = str_replace( $matches['0'][$i],
+ $matches['1'][$i]."‘".$matches['2'][$i]."’".$matches['3'][$i],
+ $str);
+ }
+ }
+ }
+
+ // How about one apostrophe, as in Rick's
+ $start = 0;
+
+ while(TRUE)
+ {
+ $current = strpos(substr($str, $start), "'");
+
+ if ($current === FALSE) break;
+
+ $one_before = substr($str, $start+$current-1, 1);
+ $one_after = substr($str, $start+$current+1, 1);
+
+ if ( ! in_array($one_before, $space) && ! in_array($one_after, $space))
+ {
+ $str = str_replace( $one_before."'".$one_after,
+ $one_before."’".$one_after,
+ $str);
+ }
+
+ $start = $start+$current+2;
+ }
+
+ // Em-dashes
+ $start = 0;
+ while(TRUE)
+ {
+ $current = strpos(substr($str, $start), "--");
+
+ if ($current === FALSE) break;
+
+ $one_before = substr($str, $start+$current-1, 1);
+ $one_after = substr($str, $start+$current+2, 1);
+ $two_before = substr($str, $start+$current-2, 1);
+ $two_after = substr($str, $start+$current+3, 1);
+
+ if (( ! in_array($one_before, $space) && ! in_array($one_after, $space))
+ OR
+ ( ! in_array($two_before, $space) && ! in_array($two_after, $space) && $one_before == ' ' && $one_after == ' ')
+ )
+ {
+ $str = str_replace( $two_before.$one_before."--".$one_after.$two_after,
+ $two_before.trim($one_before)."—".trim($one_after).$two_after,
+ $str);
+ }
+
+ $start = $start+$current+2;
+ }
+
+ // Ellipsis
+ $str = preg_replace("#(\w)\.\.\.(\s|<br />|</p>)#", "\\1…\\2", $str);
+ $str = preg_replace("#(\s|<br />|</p>)\.\.\.(\w)#", "\\1…\\2", $str);
+
+ // Run the translation array we defined above
+ $str = str_replace(array_keys($table), array_values($table), $str);
+
+ // If there are any stray double quotes we'll catch them here
+
+ $start = 0;
+
+ while(TRUE)
+ {
+ $current = strpos(substr($str, $start), '"');
+
+ if ($current === FALSE) break;
+
+ $one_before = substr($str, $start+$current-1, 1);
+ $one_after = substr($str, $start+$current+1, 1);
+
+ if ( ! in_array($one_after, $space))
+ {
+ $str = str_replace( $one_before.'"'.$one_after,
+ $one_before."“".$one_after,
+ $str);
+ }
+ elseif( ! in_array($one_before, $space))
+ {
+ $str = str_replace( $one_before."'".$one_after,
+ $one_before."”".$one_after,
+ $str);
+ }
+
+ $start = $start+$current+2;
+ }
+
+ $start = 0;
+
+ while(TRUE)
+ {
+ $current = strpos(substr($str, $start), "'");
+
+ if ($current === FALSE) break;
+
+ $one_before = substr($str, $start+$current-1, 1);
+ $one_after = substr($str, $start+$current+1, 1);
+
+ if ( ! in_array($one_after, $space))
+ {
+ $str = str_replace( $one_before."'".$one_after,
+ $one_before."‘".$one_after,
+ $str);
+ }
+ elseif( ! in_array($one_before, $space))
+ {
+ $str = str_replace( $one_before."'".$one_after,
+ $one_before."’".$one_after,
+ $str);
+ }
+
+ $start = $start+$current+2;
+ }
+
+ return $str;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Format Newlines
+ *
+ * Converts newline characters into either <p> tags or <br />
+ *
+ */
+ function format_newlines($str)
+ {
+ if ($str == '')
+ {
+ return $str;
+ }
+
+ if (strpos($str, "\n") === FALSE)
+ {
+ return '<p>'.$str.'</p>';
+ }
+
+ $str = str_replace("\n\n", "</p>\n\n<p>", $str);
+ $str = preg_replace("/([^\n])(\n)([^\n])/", "\\1<br />\\2\\3", $str);
+
+ return '<p>'.$str.'</p>';
+ }
+}
+
+
+?>
\ No newline at end of file