From a50a1937ca193ca10553e93c609351a396fe4942 Mon Sep 17 00:00:00 2001
From: ben <ben@36083f99-b078-4883-b0ff-0f9b5a30f544>
Date: Fri, 18 Jul 2008 12:14:55 +0000
Subject: Added the autop function, replaced any references to nl2br

git-svn-id: https://code.elgg.org/elgg/trunk@1468 36083f99-b078-4883-b0ff-0f9b5a30f544
---
 engine/lib/input.php | 46 ++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 42 insertions(+), 4 deletions(-)

(limited to 'engine/lib/input.php')

diff --git a/engine/lib/input.php b/engine/lib/input.php
index cd8e6ab3b..e6929f6c0 100644
--- a/engine/lib/input.php
+++ b/engine/lib/input.php
@@ -62,9 +62,10 @@
 	}
 	
 	    /**
-        * This is a function to make url clickable
-        * @param string text
-        * @return string text
+        * Takes a string and turns any URLs into formatted links
+        * 
+        * @param string $text The input string
+        * @return string The output stirng with formatted links
         **/
         
        function parse_urls($text) {
@@ -73,13 +74,50 @@
                
                 foreach (array_unique($urls[1]) AS $url){
                     $urltext = $url;
-                    $text = str_replace($url, '<a href="'. $url .'" style="text-decoration:underline;">view link</a>', $text);
+                    $text = str_replace($url, '<a href="'. $url .'" style="text-decoration:underline;">'. elgg_echo("link:view") .'</a>', $text);
                 }
             }
             
             return $text;
         }
 	
+	function autop($pee, $br = 1) {
+		$pee = $pee . "\n"; // just to make things a little easier, pad the end
+		$pee = preg_replace('|<br />\s*<br />|', "\n\n", $pee);
+		// Space things out a little
+		$allblocks = '(?:table|thead|tfoot|caption|colgroup|tbody|tr|td|th|div|dl|dd|dt|ul|ol|li|pre|select|form|map|area|blockquote|address|math|style|input|p|h[1-6]|hr)';
+		$pee = preg_replace('!(<' . $allblocks . '[^>]*>)!', "\n$1", $pee);
+		$pee = preg_replace('!(</' . $allblocks . '>)!', "$1\n\n", $pee);
+		$pee = str_replace(array("\r\n", "\r"), "\n", $pee); // cross-platform newlines
+		if ( strpos($pee, '<object') !== false ) {
+			$pee = preg_replace('|\s*<param([^>]*)>\s*|', "<param$1>", $pee); // no pee inside object/embed
+			$pee = preg_replace('|\s*</embed>\s*|', '</embed>', $pee);
+		}
+		$pee = preg_replace("/\n\n+/", "\n\n", $pee); // take care of duplicates
+		$pee = preg_replace('/\n?(.+?)(?:\n\s*\n|\z)/s', "<p>$1</p>\n", $pee); // make paragraphs, including one at the end
+		$pee = preg_replace('|<p>\s*?</p>|', '', $pee); // under certain strange conditions it could create a P of entirely whitespace
+		$pee = preg_replace('!<p>([^<]+)\s*?(</(?:div|address|form)[^>]*>)!', "<p>$1</p>$2", $pee);
+		$pee = preg_replace( '|<p>|', "$1<p>", $pee );
+		$pee = preg_replace('!<p>\s*(</?' . $allblocks . '[^>]*>)\s*</p>!', "$1", $pee); // don't pee all over a tag
+		$pee = preg_replace("|<p>(<li.+?)</p>|", "$1", $pee); // problem with nested lists
+		$pee = preg_replace('|<p><blockquote([^>]*)>|i', "<blockquote$1><p>", $pee);
+		$pee = str_replace('</blockquote></p>', '</p></blockquote>', $pee);
+		$pee = preg_replace('!<p>\s*(</?' . $allblocks . '[^>]*>)!', "$1", $pee);
+		$pee = preg_replace('!(</?' . $allblocks . '[^>]*>)\s*</p>!', "$1", $pee);
+		if ($br) {
+			$pee = preg_replace_callback('/<(script|style).*?<\/\\1>/s', create_function('$matches', 'return str_replace("\n", "<WPPreserveNewline />", $matches[0]);'), $pee);
+			$pee = preg_replace('|(?<!<br />)\s*\n|', "<br />\n", $pee); // optionally make line breaks
+			$pee = str_replace('<WPPreserveNewline />', "\n", $pee);
+		}
+		$pee = preg_replace('!(</?' . $allblocks . '[^>]*>)\s*<br />!', "$1", $pee);
+		$pee = preg_replace('!<br />(\s*</?(?:p|li|div|dl|dd|dt|th|pre|td|ul|ol)[^>]*>)!', '$1', $pee);
+		if (strpos($pee, '<pre') !== false)
+			$pee = preg_replace_callback('!(<pre.*?>)(.*?)</pre>!is', 'clean_pre', $pee );
+		$pee = preg_replace( "|\n</p>$|", '</p>', $pee );
+	
+		return $pee;
+	}
+        
 	function input_init() {
 		global $CONFIG;
 		$CONFIG->allowedtags = array ('address' => array (), 'a' => array ('href' => array (), 'title' => array (), 'rel' => array (), 'rev' => array (), 'name' => array ()), 'abbr' => array ('title' => array ()), 'acronym' => array ('title' => array ()), 'b' => array (), 'big' => array (), 'blockquote' => array ('cite' => array ()), 'br' => array (), 'button' => array ('disabled' => array (), 'name' => array (), 'type' => array (), 'value' => array ()), 'caption' => array ('align' => array ()), 'code' => array (), 'col' => array ('align' => array (), 'char' => array (), 'charoff' => array (), 'span' => array (), 'valign' => array (), 'width' => array ()), 'del' => array ('datetime' => array ()), 'dd' => array (), 'div' => array ('align' => array ()), 'dl' => array (), 'dt' => array (), 'em' => array (), 'fieldset' => array (), 'font' => array ('color' => array (), 'face' => array (), 'size' => array ()), 'form' => array ('action' => array (), 'accept' => array (), 'accept-charset' => array (), 'enctype' => array (), 'method' => array (), 'name' => array (), 'target' => array ()), 'h1' => array ('align' => array ()), 'h2' => array ('align' => array ()), 'h3' => array ('align' => array ()), 'h4' => array ('align' => array ()), 'h5' => array ('align' => array ()), 'h6' => array ('align' => array ()), 'hr' => array ('align' => array (), 'noshade' => array (), 'size' => array (), 'width' => array ()), 'i' => array (), 'img' => array ('alt' => array (), 'align' => array (), 'border' => array (), 'height' => array (), 'hspace' => array (), 'longdesc' => array (), 'vspace' => array (), 'src' => array (), 'width' => array ()), 'ins' => array ('datetime' => array (), 'cite' => array ()), 'kbd' => array (), 'label' => array ('for' => array ()), 'legend' => array ('align' => array ()), 'li' => array (), 'p' => array ('align' => array ()), 'pre' => array ('width' => array ()), 'q' => array ('cite' => array ()), 's' => array (), 'strike' => array (), 'strong' => array (), 'sub' => array (), 'sup' => array (), 'table' => array ('align' => array (), 'bgcolor' => array (), 'border' => array (), 'cellpadding' => array (), 'cellspacing' => array (), 'rules' => array (), 'summary' => array (), 'width' => array ()), 'tbody' => array ('align' => array (), 'char' => array (), 'charoff' => array (), 'valign' => array ()), 'td' => array ('abbr' => array (), 'align' => array (), 'axis' => array (), 'bgcolor' => array (), 'char' => array (), 'charoff' => array (), 'colspan' => array (), 'headers' => array (), 'height' => array (), 'nowrap' => array (), 'rowspan' => array (), 'scope' => array (), 'valign' => array (), 'width' => array ()), 'textarea' => array ('cols' => array (), 'rows' => array (), 'disabled' => array (), 'name' => array (), 'readonly' => array ()), 'tfoot' => array ('align' => array (), 'char' => array (), 'charoff' => array (), 'valign' => array ()), 'th' => array ('abbr' => array (), 'align' => array (), 'axis' => array (), 'bgcolor' => array (), 'char' => array (), 'charoff' => array (), 'colspan' => array (), 'headers' => array (), 'height' => array (), 'nowrap' => array (), 'rowspan' => array (), 'scope' => array (), 'valign' => array (), 'width' => array ()), 'thead' => array ('align' => array (), 'char' => array (), 'charoff' => array (), 'valign' => array ()), 'title' => array (), 'tr' => array ('align' => array (), 'bgcolor' => array (), 'char' => array (), 'charoff' => array (), 'valign' => array ()), 'tt' => array (), 'u' => array (), 'ul' => array (), 'ol' => array (), 'var' => array () );
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