use local photo for tag notifications if available

[friendica.git] / include / bbcode.php

diff --git a/include/bbcode.php b/include/bbcode.php
index 29ee71d410eb79c52e6d5bc7d1a236d07355559d..c30908e2d48a18c3eebf31790fd9330ff08d5a28 100644 (file)
--- a/include/bbcode.php
+++ b/include/bbcode.php
@@ -47,6 +47,89 @@ function bb_unspacefy_and_trim($st) {
   return $unspacefied;
 }
 
+function bb_find_open_close($s, $open, $close, $occurance = 1) {
+
+       if($occurance < 1)
+               $occurance = 1;
+
+       $start_pos = -1;
+       for($i = 1; $i <= $occurance; $i++) {
+               if( $start_pos !== false)
+                       $start_pos = strpos($s, $open, $start_pos + 1);
+       }
+
+       if( $start_pos === false)
+               return false;
+
+       $end_pos = strpos($s, $close, $start_pos);
+
+       if( $end_pos === false)
+               return false;
+
+       $res = array( 'start' => $start_pos, 'end' => $end_pos );
+
+       return $res;
+}
+
+function get_bb_tag_pos($s, $name, $occurance = 1) {
+
+       if($occurance < 1)
+               $occurance = 1;
+
+       $start_open = -1;
+       for($i = 1; $i <= $occurance; $i++) {
+               if( $start_open !== false)
+                       $start_open = strpos($s, '[' . $name, $start_open + 1); // allow [name= type tags
+       }
+
+       if( $start_open === false)
+               return false;
+
+       $start_equal = strpos($s, '=', $start_open);
+       $start_close = strpos($s, ']', $start_open);
+
+       if( $start_close === false)
+               return false;
+
+       $start_close++;
+
+       $end_open = strpos($s, '[/' . $name . ']', $start_close);
+
+       if( $end_open === false)
+               return false;
+
+       $res = array( 'start' => array('open' => $start_open, 'close' => $start_close),
+                     'end' => array('open' => $end_open, 'close' => $end_open + strlen('[/' . $name . ']')) );
+       if( $start_equal !== false)
+               $res['start']['equal'] = $start_equal + 1;
+
+       return $res;
+}
+
+function bb_tag_preg_replace($pattern, $replace, $name, $s) {
+
+       $string = $s;
+
+       $occurance = 1;
+       $pos = get_bb_tag_pos($string, $name, $occurance);
+       while($pos !== false && $occurance < 1000) {
+
+               $start = substr($string, 0, $pos['start']['open']);
+               $subject = substr($string, $pos['start']['open'], $pos['end']['close'] - $pos['start']['open']);
+               $end = substr($string, $pos['end']['close']);
+               if($end === false)
+                       $end = '';
+
+               $subject = preg_replace($pattern, $replace, $subject);
+               $string = $start . $subject . $end;
+
+               $occurance++;
+               $pos = get_bb_tag_pos($string, $name, $occurance);
+       }
+
+       return $string;
+}
+
 if(! function_exists('bb_extract_images')) {
 function bb_extract_images($body) {