ExpressionEngine Dev Team in credit

1 files changed, 421 insertions, 1 deletions

diff --git a/system/helpers/text_helper.php b/system/helpers/text_helper.php
index b75cd8f78..211ef1055 100644
--- a/system/helpers/text_helper.php
+++ b/system/helpers/text_helper.php
@@ -1 +1,421 @@
-<?php  if (!defined('BASEPATH')) exit('No direct script access allowed');
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP 4.3.2 or newer
 *
 * @package		CodeIgniter
 * @author		Rick Ellis
 * @copyright	Copyright (c) 2006, EllisLab, Inc.
 * @license		http://www.codeigniter.com/user_guide/license.html
 * @link		http://www.codeigniter.com
 * @since		Version 1.0
 * @filesource
 */

// ------------------------------------------------------------------------

/**
 * CodeIgniter Text Helpers
 *
 * @package		CodeIgniter
 * @subpackage	Helpers
 * @category	Helpers
 * @author		Rick Ellis
 * @link		http://www.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
 */	
function word_limiter($str, $n = 100, $end_char = '&#8230;')
{
	if (strlen($str) < $n)
	{
		return $str;
	}
	
	$words = explode(' ', preg_replace("/\s+/", ' ', preg_replace("/(\r\n|\r|\n)/", " ", $str)));
	
	if (count($words) <= $n)
	{
		return $str;
	}
			
	$str = '';
	for ($i = 0; $i < $n; $i++)
	{
		$str .= $words[$i].' ';
	}

	return trim($str).$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
 */	
function character_limiter($str, $n = 500, $end_char = '&#8230;')
{
	if (strlen($str) < $n)
	{
		return $str;
	}
		
	$str = preg_replace("/\s+/", ' ', preg_replace("/(\r\n|\r|\n)/", " ", $str));

	if (strlen($str) <= $n)
	{
		return $str;
	}
									
	$out = "";
	foreach (explode(' ', trim($str)) as $val)
	{
		$out .= $val.' ';			
		if (strlen($out) >= $n)
		{
			return trim($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
 */	
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)
	   {
		   $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
 */	
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("&amp;", "&lt;", "&gt;", "&quot;", "&apos;", "&#45;"),
						  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
 */	
function word_censor($str, $censored, $replacement = '')
{
	if ( ! is_array($censored))
	{
		return $str;
	}

	$str = ' '.$str.' ';
	foreach ($censored as $badword)
	{
		if ($replacement != '')
		{
			$str = preg_replace("/\b(".str_replace('\*', '\w*?', preg_quote($badword)).")\b/i", $replacement, $str);
		}
		else
		{
			$str = preg_replace("/\b(".str_replace('\*', '\w*?', preg_quote($badword)).")\b/ie", "str_repeat('#', strlen('\\1'))", $str);
		}
	}
	
	return trim($str);
}
	
// ------------------------------------------------------------------------

/**
 * Code Highlighter
 *
 * Colorizes code strings
 *
 * @access	public
 * @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('&lt;', '&gt;'), 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('&lt;?php', '?&gt;',  '\\'), array('phptagopen', 'phptagclose', 'backslashtmp'), $str);
		
	// The highlight_string function requires that the text be surrounded
	// by PHP tags.  Since we don't know if A) the submitted text has PHP tags,
	// or B) whether the PHP tags enclose the entire string, we will add our
	// own PHP tags around the string along with some markers to make replacement easier later
	
	$str = '<?php //tempstart'."\n".$str.'//tempend ?>';
	
	// All the magic happens here, baby!
	$str = highlight_string($str, TRUE);

	// Prior to PHP 5, the highlight function used icky font tags
	// so we'll replace them with span tags.	
	if (abs(phpversion()) < 5)
	{
		$str = str_replace(array('<font ', '</font>'), array('<span ', '</span>'), $str);
		$str = preg_replace('#color="(.*?)"#', 'style="color: \\1"', $str);
	}
	
	// Remove our artificially added PHP
	$str = preg_replace("#\<code\>.+?//tempstart\<br />\</span\>#is", "<code>\n", $str);
	$str = preg_replace("#\<code\>.+?//tempstart\<br />#is", "<code>\n", $str);
	$str = preg_replace("#//tempend.+#is", "</span>\n</code>", $str);
	
	// Replace our markers back to PHP tags.
	$str = str_replace(array('phptagopen', 'phptagclose', 'backslashtmp'), array('&lt;?php', '?&gt;', '\\'), $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
 */	
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;
}
	
// ------------------------------------------------------------------------

/**
 * 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
 */	
function word_wrap($str, $charlim = '76')
{
	// Se the character limit
	if ( ! is_numeric($charlim))
		$charlim = 76;
	
	// Reduce multiple spaces
	$str = preg_replace("| +|", " ", $str);
	
	// Standardize newlines
	$str = preg_replace("/\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 $line) 
	{
		// Is the line within the allowed character count?
		// If so we'll join it to the output and continue
		if (strlen($line) <= $charlim)
		{
			$output .= $line."\n";			
			continue;
		}
			
		$temp = '';
		while((strlen($line)) > $charlim) 
		{
			// If the over-length word is a URL we won't wrap it
			if (preg_match("!\[url.+\]|://|wwww.!", $line))
			{
				break;
			}

			// Trim the word down
			$temp .= substr($line, 0, $charlim-1);
			$line = substr($line, $charlim-1);
		}
		
		// If $temp contains data it means we had to split up an over-length 
		// word into smaller chunks so we'll add it back to our current line
		if ($temp != '')
		{
			$output .= $temp . "\n" . $line; 
		}
		else
		{
			$output .= $line;
		}

		$output .= "\n";
	}

	// Put our markers back
	if (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;	
}
 

?>
\ No newline at end of file
+<?php  if (!defined('BASEPATH')) exit('No direct script access allowed');

+/**

+ * CodeIgniter

+ *

+ * An open source application development framework for PHP 4.3.2 or newer

+ *

+ * @package		CodeIgniter

+ * @author		ExpressionEngine Dev Team

+ * @copyright	Copyright (c) 2006, EllisLab, Inc.

+ * @license		http://www.codeigniter.com/user_guide/license.html

+ * @link		http://www.codeigniter.com

+ * @since		Version 1.0

+ * @filesource

+ */

+

+// ------------------------------------------------------------------------

+

+/**

+ * CodeIgniter Text Helpers

+ *

+ * @package		CodeIgniter

+ * @subpackage	Helpers

+ * @category	Helpers

+ * @author		ExpressionEngine Dev Team

+ * @link		http://www.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

+ */	

+function word_limiter($str, $n = 100, $end_char = '&#8230;')

+{

+	if (strlen($str) < $n)

+	{

+		return $str;

+	}

+	

+	$words = explode(' ', preg_replace("/\s+/", ' ', preg_replace("/(\r\n|\r|\n)/", " ", $str)));

+	

+	if (count($words) <= $n)

+	{

+		return $str;

+	}

+			

+	$str = '';

+	for ($i = 0; $i < $n; $i++)

+	{

+		$str .= $words[$i].' ';

+	}

+

+	return trim($str).$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

+ */	

+function character_limiter($str, $n = 500, $end_char = '&#8230;')

+{

+	if (strlen($str) < $n)

+	{

+		return $str;

+	}

+		

+	$str = preg_replace("/\s+/", ' ', preg_replace("/(\r\n|\r|\n)/", " ", $str));

+

+	if (strlen($str) <= $n)

+	{

+		return $str;

+	}

+									

+	$out = "";

+	foreach (explode(' ', trim($str)) as $val)

+	{

+		$out .= $val.' ';			

+		if (strlen($out) >= $n)

+		{

+			return trim($out).$end_char;

+		}		

+	}

+}

+	

+// ------------------------------------------------------------------------

+

+/**

+ * High ASCII to Entities

+ *

+ * Converts High ascii text and MS Word special characters to character entities

+ *

+ * @access	public

+ * @param	string

+ * @return	string

+ */	

+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)

+	   {

+		   $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

+ */	

+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("&amp;", "&lt;", "&gt;", "&quot;", "&apos;", "&#45;"),

+						  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

+ */	

+function word_censor($str, $censored, $replacement = '')

+{

+	if ( ! is_array($censored))

+	{

+		return $str;

+	}

+

+	$str = ' '.$str.' ';

+	foreach ($censored as $badword)

+	{

+		if ($replacement != '')

+		{

+			$str = preg_replace("/\b(".str_replace('\*', '\w*?', preg_quote($badword)).")\b/i", $replacement, $str);

+		}

+		else

+		{

+			$str = preg_replace("/\b(".str_replace('\*', '\w*?', preg_quote($badword)).")\b/ie", "str_repeat('#', strlen('\\1'))", $str);

+		}

+	}

+	

+	return trim($str);

+}

+	

+// ------------------------------------------------------------------------

+

+/**

+ * Code Highlighter

+ *

+ * Colorizes code strings

+ *

+ * @access	public

+ * @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('&lt;', '&gt;'), 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('&lt;?php', '?&gt;',  '\\'), array('phptagopen', 'phptagclose', 'backslashtmp'), $str);

+		

+	// The highlight_string function requires that the text be surrounded

+	// by PHP tags.  Since we don't know if A) the submitted text has PHP tags,

+	// or B) whether the PHP tags enclose the entire string, we will add our

+	// own PHP tags around the string along with some markers to make replacement easier later

+	

+	$str = '<?php //tempstart'."\n".$str.'//tempend ?>';

+	

+	// All the magic happens here, baby!

+	$str = highlight_string($str, TRUE);

+

+	// Prior to PHP 5, the highlight function used icky font tags

+	// so we'll replace them with span tags.	

+	if (abs(phpversion()) < 5)

+	{

+		$str = str_replace(array('<font ', '</font>'), array('<span ', '</span>'), $str);

+		$str = preg_replace('#color="(.*?)"#', 'style="color: \\1"', $str);

+	}

+	

+	// Remove our artificially added PHP

+	$str = preg_replace("#\<code\>.+?//tempstart\<br />\</span\>#is", "<code>\n", $str);

+	$str = preg_replace("#\<code\>.+?//tempstart\<br />#is", "<code>\n", $str);

+	$str = preg_replace("#//tempend.+#is", "</span>\n</code>", $str);

+	

+	// Replace our markers back to PHP tags.

+	$str = str_replace(array('phptagopen', 'phptagclose', 'backslashtmp'), array('&lt;?php', '?&gt;', '\\'), $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

+ */	

+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;

+}

+	

+// ------------------------------------------------------------------------

+

+/**

+ * 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

+ */	

+function word_wrap($str, $charlim = '76')

+{

+	// Se the character limit

+	if ( ! is_numeric($charlim))

+		$charlim = 76;

+	

+	// Reduce multiple spaces

+	$str = preg_replace("| +|", " ", $str);

+	

+	// Standardize newlines

+	$str = preg_replace("/\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 continue

+		if (strlen($line) <= $charlim)

+		{

+			$output .= $line."\n";			

+			continue;

+		}

+			

+		$temp = '';

+		while((strlen($line)) > $charlim) 

+		{

+			// If the over-length word is a URL we won't wrap it

+			if (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 line

+		if ($temp != '')

+		{

+			$output .= $temp . "\n" . $line; 

+		}

+		else

+		{

+			$output .= $line;

+		}

+

+		$output .= "\n";

+	}

+

+	// Put our markers back

+	if (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;	

+}

+ 

+

+?>
\ No newline at end of file