Fix vcard folding at 75 chars; don't fold vcards for internal storage

program/include/rcube_contacts.php

@@ -551,7 +551,7 @@ class rcube_contacts extends rcube_addressbook
                     $words .= ' ' . self::normalize_string($value);
             }
         }
-        $out['vcard'] = $vcard->export();
+        $out['vcard'] = $vcard->export(false);
 
         foreach ($this->table_cols as $col) {
             $key = $col;

program/include/rcube_vcard.php

@@ -206,9 +206,10 @@ class rcube_vcard
   /**
    * Convert the data structure into a vcard 3.0 string
    */
-  public function export()
+  public function export($folded = true)
   {
-    return self::rfc2425_fold(self::vcard_encode($this->raw));
+    $vcard = self::vcard_encode($this->raw);
+    return $folded ? self::rfc2425_fold($vcard) : $vcard;
   }
   
   
@@ -465,18 +466,13 @@ class rcube_vcard
 
   private static function rfc2425_fold_callback($matches)
   {
-    // use mb string function if available
-    if (function_exists('mb_ereg_replace')) {
-      return ":\n " . mb_ereg_replace('(.{70})', "\\1\n ", $matches[1]);
-    }
-    
     // chunk_split string and avoid lines breaking multibyte characters
-    $c = 66;
-    $out = ":\n " . substr($matches[1], 0, $c);
+    $c = 71;
+    $out .= substr($matches[1], 0, $c);
     for ($n = $c; $c < strlen($matches[1]); $c++) {
-      // break if length > 70 or mutlibyte character starts after position 66
-      if ($n > 70 || ($n > 66 && ord($matches[1][$c]) >> 6 == 3)) {
-        $out .= "\n ";
+      // break if length > 75 or mutlibyte character starts after position 71
+      if ($n > 75 || ($n > 71 && ord($matches[1][$c]) >> 6 == 3)) {
+        $out .= "\n  ";
         $n = 0;
       }
       $out .= $matches[1][$c];
@@ -486,9 +482,9 @@ class rcube_vcard
     return $out;
   }
 
-  private static function rfc2425_fold($val)
+  public static function rfc2425_fold($val)
   {
-    return preg_replace_callback('/:([^\n]{72,})/', array('self', 'rfc2425_fold_callback'), $val) . "\n";
+    return preg_replace_callback('/([^\n]{72,})/', array('self', 'rfc2425_fold_callback'), $val);
   }
 
 

program/steps/addressbook/export.inc

@@ -32,7 +32,7 @@ header('Content-Disposition: attachment; filename="rcube_contacts.vcf"');
 while ($result && ($row = $result->next())) {
   // we already have a vcard record
   if ($row['vcard']) {
-    echo $row['vcard'] . "\n";
+    echo rcube_vcard::rfc2425_fold($row['vcard']) . "\n";
   }
   // copy values into vcard object
   else {
@@ -46,7 +46,7 @@ while ($result && ($row = $result->next())) {
       }
     }
 
-    echo $vcard->export() . "\n";
+    echo $vcard->export(true) . "\n";
   }
 }