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<?PHP
require_once('core/xmlparser.inc.php');
require_once('core/db.inc.php');
function Uses() {
foreach(func_get_args() as $file) {
if(isset($GLOBALS['modules']->code[$file]))
require_once($GLOBALS['modules']->GetCodePath($file));
else
die('Fatal: a required code file was not found.');
}
}
class Modules {
var $modules = array();
var $pages = array();
var $code = array();
var $templates = array();
function Modules() {
$module = $this->Load('base.xml');
if(!$module) die('Fatal: could not load Neon base.');
$module['path'] = '';
$this->modules['base'] = $module;
$dir = opendir('modules');
while($moddir = readdir($dir)) {
if($moddir[0] == '.' || !is_dir('modules/' . $moddir) || !is_file('modules/' . $moddir . '/module.xml'))
continue;
$module = $this->Load('modules/' . $moddir . '/module.xml');
if(!$module) continue;
$module['path'] = 'modules/' . $moddir . '/';
$this->modules[$module['name']] = $module;
}
closedir($dir);
$res = $GLOBALS['db']->Execute('SELECT name, enabled FROM modules');
$row[0] = 'base';
$row[1] = 1;
do {
if(!array_key_exists($row[0], $this->modules)) {
$GLOBALS['db']->Execute('DELETE FROM modules WHERE name = ?', $row[0]);
continue;
}
if(!$row[1]) continue;
$this->modules[$row[0]]['enabled'] = true;
foreach($this->modules[$row[0]]['pages'] as $page)
$this->pages[$page] = &$this->modules[$row[0]];
foreach($this->modules[$row[0]]['code'] as $code)
$this->code[$code] = &$this->modules[$row[0]];
foreach($this->modules[$row[0]]['templates'] as $template)
$this->templates[$template] = &$this->modules[$row[0]];
} while($row = $res->FetchRow());
}
function Load($file) {
if(!is_file($file)) return null;
$data = $GLOBALS['xmlparser']->ParseFile($file);
if(!$data) return null;
$info = $GLOBALS['xmlparser']->FindTag($data, 'info');
if(!$info) return null;
$name = $GLOBALS['xmlparser']->FindTag($info, 'name');
if(!$name) return null;
if(count($name['children']) != 1) return null;
if(!is_string($name['children'][0])) return null;
$name = $name['children'][0];
$version = $GLOBALS['xmlparser']->FindTag($info, 'version');
if(!$version) return null;
if(count($version['children']) != 1) return null;
if(!is_string($version['children'][0])) return null;
$version = $version['children'][0];
$desc = $GLOBALS['xmlparser']->FindTag($info, 'desc');
if($desc && (count($desc['children']) == 1) && is_string($desc['children'][0])) $desc = $desc['children'][0];
else $desc = '';
$module = array('name' => $name, 'version' => $version, 'desc' => $desc, 'code' => array(),
'pages' => array(), 'templates' => array(), 'config' => false, 'enabled' => false);
if($GLOBALS['xmlparser']->FindTag($info, 'config')) $module['config'] = true;
$files = $GLOBALS['xmlparser']->FindTag($data, 'files');
if(!$files) return $module;
foreach($files['children'] as $file) {
if(!is_array($file)) continue;
if(count($file['children']) != 1) continue;
if(!is_string($file['children'][0])) continue;
switch($file['tag']) {
case 'page':
$type = $file['attribs']['type'];
if(!$type) $type = 'c';
array_push($module['pages'], $file['children'][0] . '.' . $type);
break;
case 'code':
array_push($module['code'], $file['children'][0]);
break;
case 'template':
array_push($module['templates'], $file['children'][0]);
}
}
return $module;
}
function GetCodePath($name) {
return $this->code[$name]['path'] . 'code/' . $name . '.inc.php';
}
function GetPagePath($name, $type) {
return $this->pages[$name . '.' . $type]['path'] . 'pages/' .
strtr($type, array('c' => 'content', 'e' => 'editor', 'n' => 'nav', 'b' => 'base')) . '/' . $name . '.xml';
}
function GetTemplatePath($name) {
return $this->templates[$name]['path'] . 'templates/' . $name . '.inc.php';
}
function Exists($name) {
return array_key_exists($name, $this->modules);
}
function Enabled($name) {
return $this->Exists($name) && $this->modules[$name]['enabled'];
}
function HasConfig($name) {
if(!$this->Exists($name)) return false;
return $this->modules[$name]['config'];
}
function Enable($name, $enable = true) {
if(!$this->Exists($name)) return false;
if($this->Enabled($name) == $enable) return true;
$res = $GLOBALS['db']->Execute('SELECT id FROM modules WHERE name = ?', $name);
if($res->RecordCount()) {
$GLOBALS['db']->Execute('UPDATE modules SET enabled = ? WHERE name = ?', array(intval($enable), $name));
return ($GLOBALS['db']->Affected_Rows() > 0);
}
$GLOBALS['db']->Execute('INSERT INTO modules (name, enabled) VALUES (?, ?)', array($name, intval($enable)));
return ($GLOBALS['db']->Affected_Rows() > 0);
}
function Disable($name) {
return $this->Enable($name, false);
}
}
$GLOBALS['modules'] = new Modules;
?>
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