children)) { $this->data = null; } else { $this->data =& $this->builder($root); } $this->time = time(); $this->version = BANANA_TREE_VERSION; $this->saveToFile($root->id); } private function &builder(BananaSpoolHead $head) { $array = array(array($head->id)); $this->urls[$head->id] = banana_entities(Banana::$page->makeURL(array('group' => Banana::$group, 'artid' => $head->id))); $this->title[$head->id] = banana_entities($head->name . ', ' . Banana::$spool->formatDate($head)); foreach ($head->children as $key=>&$msg) { $tree =& $this->builder($msg); $last = $key == count($head->children) - 1; foreach ($tree as $kt=>&$line) { if ($kt === 0 && $key === 0 && !$last) { $array[0] = array_merge($array[0], array(array('+', $msg->id)), $line); } else if($kt === 0 && $key === 0) { $array[0] = array_merge($array[0], array(array('-', $msg->id)), $line); } else if ($kt === 0 && $last) { $array[] = array_merge(array(' ', array('`', $msg->id)), $line); } else if ($kt === 0) { $array[] = array_merge(array(' ', array('t', $msg->id)), $line); } else if ($last) { $array[] = array_merge(array(' ', ' '), $line); } else { $array[] = array_merge(array(' ', array('|', $head->children[$key+1]->id)), $line); } } unset($tree); } return $array; } /** Save the content of the tree into a file */ private function saveToFile($id) { file_put_contents(BananaTree::filename($id), serialize($this)); } /** Create a reference to a tree image. */ static private function makeTreeImg($img, $alt) { return Banana::$page->makeImg(Array('img' => $img, 'alt' => $alt, 'height' => 18, 'width' => 14)); } /** Add an entry to the static tree association table. */ static private function addTreeKind(array& $tree, $ascii, $img) { $tree[$ascii] = array(self::makeTreeImg($img . Banana::$tree_unread, $ascii), self::makeTreeImg($img . Banana::$tree_read, $ascii)); } /** Return html to display the tree */ public function &show() { if (!is_null($this->displaid) || is_null($this->data)) { return $this->displaid; } static $t_e, $tree; //$u_h, $u_ht, $u_vt, $u_l, $u_f, $r_h, $r_ht, $r_vt, $r_l, $r_f; if (!isset($t_e)) { $t_e = self::makeTreeImg('e', ' '); $tree = array(); self::addTreeKind($tree, '+', 'p2'); self::addTreeKind($tree, '-', 'm2'); self::addTreeKind($tree, '|', 'l2'); self::addTreeKind($tree, '`', 'a2'); self::addTreeKind($tree, 't', 't2'); } $text = '

'; foreach ($this->data as &$line) { $text .= '

'; unset($head); foreach ($line as &$item) { if ($item == ' ') { $text .= $t_e; } else if (is_array($item)) { $head =& Banana::$spool->overview[$item[1]]; $text .= $tree[$item[0]][$head->isread ? 1 : 0]; } else { $head =& Banana::$spool->overview[$item]; $text .= 'urls[$item] . '\'"'; } else { $text .= ' disabled="disabled"'; } if (Banana::$artid == $item) { $text .= ' checked="checked"'; } $last_title = $head->subject; $text .= '/>'; } } if (function_exists('hook_spoolTagBranch') && isset($head)) { $text .= hook_spoolTagBranch($head); } $text .= "

\n"; } $text .= '

'; $this->displaid =& $text; return $text; } /** Get filename */ static private function filename($id) { static $host; if (!isset($host)) { $host = parse_url(Banana::$page->makeURL(array()), PHP_URL_HOST); } return BananaSpool::getPath('tree_' . $id . '_' . $host); } /** Read a tree from a file */ static private function &readFromFile($id) { $tree = null; $file = BananaTree::filename($id); if (!file_exists($file)) { return $tree; } $tree = unserialize(file_get_contents($file)); if ($tree->version != BANANA_TREE_VERSION) { $tree = null; } return $tree; } /** Build a tree for the given id */ static public function &build($id) { $root =& Banana::$spool->root($id); if (!isset(BananaTree::$cache[$root->id])) { $tree =& BananaTree::readFromFile($root->id); if (is_null($tree) || $tree->time < $root->time) { $tree = new BananaTree($root); } BananaTree::$cache[$root->id] =& $tree; } return BananaTree::$cache[$root->id]; } /** Kill the file associated to the given id */ static public function kill($id) { @unlink(BananaTree::filename($id)); } } // vim:set et sw=4 sts=4 ts=4 fenc=utf-8: ?>