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$gwbbcode_root_path = './';
require_once($gwbbcode_root_path.'install.inc.php');
define('OLD_PICKUP_PATH', $gwbbcode_root_path.'pickup.txt');
install_header();

$successful = true;
$step = 1;

echo "\nTesting writability...\n";
$pickup = load(PICKUP_PATH);
$pickup = $pickup ? $pickup : Array();
echo PICKUP_PATH . ' is ' . (save(PICKUP_PATH, $pickup) ? success('writable', true) : failure('not writable', true));

echo "\nCleaning phpBB from previous installations...\n";
rm('functions_gw.php');
rm('bbcode.tpl');
rm('skills_php.txt');
rm('skill_names.txt');


//phpBB
if (file_exists($gwbbcode_root_path.'../index.php') && strpos(file_get_contents($gwbbcode_root_path.'../index.php'), 'phpBB') !== false) {
   //Cleaning
   sub_from_file($step++, "// Remove our padding from the string..\n\t\$text = substr(\$text, 1);",
               "include_once('gwbbcode/functions_gw.php');",
               $gwbbcode_root_path.'../includes/bbcode.php');
   sub_from_file($step++, "'T_SPAN_CLASS3' => \$theme['span_class3'],",
               "   'GWBBCODE_HEAD' => file_get_contents('gwbbcode/overall_header.tpl'),",
               $gwbbcode_root_path.'../includes/page_header.php');
   if (file_exists(OLD_PICKUP_PATH)) {
      $pickup = eval('return '.file_get_contents(OLD_PICKUP_PATH).';');
      if (save(PICKUP_PATH, $pickup)) {
         echo 'Transfering ' . OLD_PICKUP_PATH . ' to ' . PICKUP_PATH . ': ' . success('done', true);
         rm(OLD_PICKUP_PATH, false);
      }
   }

   echo "\nHooking phpBB...\n";
   add_to_file($step++, "'T_SPAN_CLASS3' => \$theme['span_class3'],",
               "   'GWBBCODE_HEAD' => include('gwbbcode/header.php'),",
               $gwbbcode_root_path.'../includes/page_header.php');
   add_to_file($step++, "'T_SPAN_CLASS3' => \$theme['span_class3'],",
               "   'GWBBCODE_BODY' => include('gwbbcode/body.php'),",
               $gwbbcode_root_path.'../includes/page_header.php');
   add_to_file($step++, "// Remove our padding from the string..\n\t\$text = substr(\$text, 1);",
               "include('gwbbcode/gwbbcode.php');",
               $gwbbcode_root_path.'../includes/bbcode.php');
   
   
   //Hook all templates
   $templates = template_list();
   foreach ($templates as $template) {
      if (in_array($template, $not_to_hook))
         continue;
         
      echo "\nProcessing template " . basename($template) . "...\n";
      add_to_file($step++, '@<head[^>]*>@Uis',
                  '{GWBBCODE_HEAD}',
                  $template.'/overall_header.tpl',
                  true);
      add_to_file($step++, '@<body[^>]*>@Uis',
                  '{GWBBCODE_BODY}',
                  $template.'/overall_header.tpl',
                  true);
   }
   echo "\nIf you add templates, please rerun install.php to hook gwbbcode on them";
}


//vBulletin
//TODO
if (file_exists($gwbbcode_root_path.'../index.php') && strpos(file_get_contents($gwbbcode_root_path.'../index.php'), 'vBulletin') !== false) {
   echo "\nHooking vBulletin...\n";
   add_to_file($step++, "eval('\$headinclude = \"' . fetch_template('headinclude') . '\";');",
               "\$headinclude .= include('gwbbcode/header.php');",
               $gwbbcode_root_path.'../global.php');
   add_to_file($step++, "eval('\$header = \"' . fetch_template('header') . '\";');",
               "\$header .= include('gwbbcode/body.php');",
               $gwbbcode_root_path.'../global.php');
   add_to_file($step++, "function parse_bbcode(\$input_text, \$do_smilies, \$do_html = false)\n\t{",
               "include('gwbbcode/gwbbcode.php');\n\$input_text = parse_gwbbcode(\$input_text);",
               $gwbbcode_root_path.'../includes/class_bbcode.php');
   echo "\nYou need to change the number of images allowed in a post otherwise gwBBCode's images won't show :(";
   echo "\nTo do that, go to vBulletin Options/Message Posting and Editing Options and change Maximum Images Per Post";
}


echo "\n\n";
if ($successful)
   success('Installation successfully completed!');
else
   failure('Installation failed! If you can\'t resolve the issue(s), please contact me.');
?>

</pre></body></html>

require_once($gwbbcode_root_path.'gwbbcode.inc.php');


function install_header() {
   $gwbbcode_version = GWBBCODE_VERSION;
   $stars = str_repeat('*', strlen(GWBBCODE_VERSION));
   echo "
*************$stars
* gwBBCode $gwbbcode_version *
*************$stars
";
}


function rm($filename, $verbose=true) {
   if (file_exists($filename))
      if (unlink($filename))
         success("File $filename successfully removed.", !$verbose);
      else
         failure("File $filename unsuccessfully removed.", !$verbose);
}


function sub_from_file($step, $where, $what, $filename, $regexp=false) {
   echo "Step $step: ";
   if ($content = file_get_contents($filename)) {
      $content = str_replace("\r\n", "\n", $content);
      
      //If $what isn't in the file
      if (strpos($content, $what) === false) {
         //Say it
         success("already clean");
      }
      else {
         //else remove it
         $content = str_replace("\n".$what, '', $content);   //UNSAFE TODO
         
         //If $what is no longer in the file
         if (strpos($content, $what) === false) {
            //Try to save the file
            if ($f = fopen($filename, 'wb')) {
               fwrite($f, $content);
               fclose($f);
               success("clean");
            }
            else
               failure("Error 1: '$filename' couldn't be opened for modification.\n".
                       'Change access rights and try again or replace it by the original file from phpBB');
            
         }
         else
            failure("Error 2: '$what' was found in '$filename' but couldn't be removed.\n".
                    "Please manually remove it, or replace its file by the original file from phpBB");
      }
   }
}


function add_to_file($step, $where, $what, $filename, $regexp=false) {
   echo "Step $step: ";
   if ($content = file_get_contents($filename)) {
      $content = str_replace("\r\n", "\n", $content);
      
      //If $what isn't in the file
      if (strpos($content, $what) === false) {
         //Add it
         if ($regexp === false)
            $content = str_replace($where, $where."\n".$what, $content);
         else
            $content = preg_replace($where, "$0\n".$what, $content);
         //If $what now is in the file
         if (strpos($content, $what) !== false) {
            //Try to save the file
            if ($f = fopen($filename, 'wb')) {
               fwrite($f, $content);
               fclose($f);
               success("hooked");
            }
            else
               failure("Error 3: '$filename' couldn't be opened for modification.\n".
                       'Please change its access rights and try again.');
         }
         else
            failure("Error 4: '$what' wasn't found in '$filename'.");
      }
      else
         success("already hooked");
   }
}

function success($text, $return=false) {
   $text = str_replace('<', '<', $text);
   $output = "<span style='color:green'>$text</span>\n";
   if ($return)
      return $output;
   else
      echo $output;
}

function failure($text, $return=false) {
   global $successful;
   $successful = false;
   $text = str_replace('<', '<', $text);
   $output = "<span style='color:red'>$text</span>\n";
   if ($return)
      return $output;
   else
      echo $output;
}


function template_list() {
   global $gwbbcode_root_path;
   $list = Array();
   $dir = $gwbbcode_root_path.'../templates/';
   $dh  = opendir($dir);
   while (false !== ($filename = readdir($dh)))
      if (is_dir($dir.$filename) && substr($filename, 0, 1) != '.')
         $list[] = $dir.$filename;
   
   return $list;
}
?>