Merge pull request #317 from CatoTH/master

[friendica.git] / include / html2plain.php

diff --git a/include/html2plain.php b/include/html2plain.php
index 2a4cf663913720caeac1bd041c3b6b99f993c3ab..839dd70a74437383a01ccdec34bbcad0d66506a7 100644 (file)
--- a/include/html2plain.php
+++ b/include/html2plain.php
@@ -1,9 +1,15 @@
 <?php
 require_once "html2bbcode.php";
 
-function breaklines($line, $level)
+function breaklines($line, $level, $wraplength = 75)
 {
-       $wraplen = 75-$level;
+
+       if ($wraplength == 0)
+               $wraplength = 2000000;
+
+       //      return($line);
+
+       $wraplen = $wraplength-$level;
 
        $newlines = array();
 
@@ -37,7 +43,7 @@ function breaklines($line, $level)
        return(implode($newlines, "\n"));
 }
 
-function quotelevel($message)
+function quotelevel($message, $wraplength = 75)
 {
        $lines = explode("\n", $message);
 
@@ -65,12 +71,34 @@ function quotelevel($message)
                }
 
                if (!$startquote or ($line != ''))
-                       $newlines[] = breaklines($line, $currlevel);
+                       $newlines[] = breaklines($line, $currlevel, $wraplength);
        }
        return(implode($newlines, "\n"));
 }
 
-function html2plain($html)
+function collecturls($message) {
+       $pattern = '/<a.*?href="(.*?)".*?>(.*?)<\/a>/is';
+       preg_match_all($pattern, $message, $result, PREG_SET_ORDER);
+
+       $urls = array();
+       foreach ($result as $treffer) {
+               // A list of some links that should be ignored
+               $list = array("/user/", "/tag/", "/group/", "/profile/", "/search?search=", "/search?tag=", "mailto:", "/u/", "/node/",
+                               "//facebook.com/profile.php?id=", "//plus.google.com/");
+               foreach ($list as $listitem)
+                       if (strpos($treffer[1], $listitem) !== false)
+                               $ignore = true;
+
+               if ((strpos($treffer[1], "//plus.google.com/") !== false) and (strpos($treffer[1], "/posts") !== false))
+                               $ignore = false;
+
+               if (!$ignore)
+                       $urls[$treffer[1]] = $treffer[1];
+       }
+       return($urls);
+}
+
+function html2plain($html, $wraplength = 75, $compact = false)
 {
        global $lang;
 
@@ -93,22 +121,16 @@ function html2plain($html)
        $message = str_replace(array("\n<", ">\n", "\r", "\n", "\xC3\x82\xC2\xA0"), array("<", ">", "<br>", " ", ""), $message);
        $message = preg_replace('= [\s]*=i', " ", $message);
 
-       // nach <a href="...">...</a> suchen, die ... miteinander vergleichen und bei Gleichheit durch ein einzelnes ... ersetzen.
-       $pattern = '/<a.*?href="(.*?)".*?>(.*?)<\/a>/is';
-       preg_match_all($pattern, $message, $result, PREG_SET_ORDER);
+       // Collecting all links
+       $urls = collecturls($message);
 
-       foreach ($result as $treffer) {
-               if ($treffer[1] == $treffer[2]) {
-                       $search = '<a href="'.$treffer[1].'" target="_blank">'.$treffer[1].'</a>';
-                       $message = str_replace($search, $treffer[1], $message);
-               }
-       }
        @$doc->loadHTML($message);
 
        node2bbcode($doc, 'html', array(), '', '');
        node2bbcode($doc, 'body', array(), '', '');
 
        // MyBB-Auszeichnungen
+       /*
        node2bbcode($doc, 'span', array('style'=>'text-decoration: underline;'), '_', '_');
        node2bbcode($doc, 'span', array('style'=>'font-style: italic;'), '/', '/');
        node2bbcode($doc, 'span', array('style'=>'font-weight: bold;'), '*', '*');
@@ -117,8 +139,12 @@ function html2plain($html)
        node2bbcode($doc, 'b', array(), '*', '*');
        node2bbcode($doc, 'i', array(), '/', '/');
        node2bbcode($doc, 'u', array(), '_', '_');
+       */
 
-       node2bbcode($doc, 'blockquote', array(), '[quote]', "[/quote]\n");
+       if ($compact)
+               node2bbcode($doc, 'blockquote', array(), "»", "«");
+       else
+               node2bbcode($doc, 'blockquote', array(), '[quote]', "[/quote]\n");
 
        node2bbcode($doc, 'br', array(), "\n", '');
 
@@ -131,7 +157,7 @@ function html2plain($html)
        //node2bbcode($doc, 'ol', array(), "\n[list=1]", "[/list]\n");
        node2bbcode($doc, 'li', array(), "\n* ", "\n");
 
-       node2bbcode($doc, 'hr', array(), str_repeat("-", 70), "");
+       node2bbcode($doc, 'hr', array(), "\n".str_repeat("-", 70)."\n", "");
 
        node2bbcode($doc, 'tr', array(), "\n", "");
        node2bbcode($doc, 'td', array(), "\t", "");
@@ -143,16 +169,25 @@ function html2plain($html)
        node2bbcode($doc, 'h5', array(), "\n\n*", "*\n");
        node2bbcode($doc, 'h6', array(), "\n\n*", "*\n");
 
-       node2bbcode($doc, 'a', array('href'=>'/(.+)/'), ' $1', '', true);
-       node2bbcode($doc, 'img', array('alt'=>'/(.+)/'), '$1', '');
-       node2bbcode($doc, 'img', array('title'=>'/(.+)/'), '$1', '');
-       node2bbcode($doc, 'img', array(), '', '');
-       node2bbcode($doc, 'img', array('src'=>'/(.+)/'), '[img]$1', '[/img]');
+       // Problem: there is no reliable way to detect if it is a link to a tag or profile
+       //node2bbcode($doc, 'a', array('href'=>'/(.+)/'), ' $1 ', '', true);
+       node2bbcode($doc, 'a', array('href'=>'/(.+)/', 'rel'=>'oembed'), ' $1 ', '', true);
+       //node2bbcode($doc, 'img', array('alt'=>'/(.+)/'), '$1', '');
+       //node2bbcode($doc, 'img', array('title'=>'/(.+)/'), '$1', '');
+       //node2bbcode($doc, 'img', array(), '', '');
+       if (!$compact)
+               node2bbcode($doc, 'img', array('src'=>'/(.+)/'), '[img]$1', '[/img]');
+       else
+               node2bbcode($doc, 'img', array('src'=>'/(.+)/'), '', '');
+
+       node2bbcode($doc, 'iframe', array('src'=>'/(.+)/'), ' $1 ', '', true);
 
        $message = $doc->saveHTML();
 
-       $message = str_replace("[img]", "", $message);
-       $message = str_replace("[/img]", "", $message);
+       if (!$compact) {
+               $message = str_replace("[img]", "", $message);
+               $message = str_replace("[/img]", "", $message);
+       }
 
        // was ersetze ich da?
        // Irgendein stoerrisches UTF-Zeug
@@ -168,12 +203,20 @@ function html2plain($html)
 
        $message = html_entity_decode($message, ENT_QUOTES, 'UTF-8');
 
+       if (!$compact) {
+               $counter = 1;
+               foreach ($urls as $id=>$url)
+                       if (strpos($message, $url) == false)
+                               $message .= "\n".$url." ";
+                               //$message .= "\n[".($counter++)."] ".$url;
+       }
+
        do {
                $oldmessage = $message;
                $message = str_replace("\n\n\n", "\n\n", $message);
        } while ($oldmessage != $message);
 
-       $message = quotelevel(trim($message));
+       $message = quotelevel(trim($message), $wraplength);
 
        return(trim($message));
 }