sa_hook_components.php

<?php

/*
* @Plugin Name: sa_hook_components
* @Description: Executes components on hooks
* @Version: 0.2.1
* @Author: Shawn Alverson
* @Author URI: http://tablatronix.com/getsimple-cms/sa-hook-components/
*/


$PLUGIN_ID  = "sa_hooks";
$PLUGINPATH = $SITEURL.'plugins/sa_hook_components/';
$sa_url     = 'http://tablatronix.com/getsimple-cms/sa-hook-components/';

# get correct id for plugin
$thisfile    =	basename(__FILE__, ".php");     // Plugin File
$sa_pname    =	'SA Hook Components';           //Plugin name
$sa_pversion =	'0.2.2';                        //Plugin version
$sa_pauthor  =	'Shawn Alverson';               //Plugin author
$sa_purl     =	$sa_url;                        //author website
$sa_pdesc    =	'Execute components on hooks';  //Plugin description
$sa_ptype    =	'';                             //page type - on which admin tab to display
$sa_pfunc    =	'';                             //main function (administration)
	  
# register plugin
register_plugin($thisfile,$sa_pname,$sa_pversion,$sa_pauthor,$sa_url,$sa_pdesc,$sa_ptype,$sa_pfunc);

function sa_hc_init(){
	global $components;
	
	// if components are not loaded in gobals, we load them ourselves
	if (!$components) {
		$components = sa_hc_get_component();
	}

	// loop components for titles of "hook_" then register them
	$compnames = $components->xpath('item/title');

	foreach($compnames as $compname){
		$compname = (string)$compname;
		
		if(strpos($compname,'hook_') === false) continue;		
		$compname = substr($compname,5);
		
		add_action($compname,'sa_hc_exec_component',array('hook_'.$compname));	
	}
	
}	

function sa_hc_get_component($id = null){

	// loads components, returns all if no $id is specified

	$file = "components.xml";
	$path = GSDATAOTHERPATH;
	$data = getXML($path . $file);
	
	if(!$id){
		return $data; // return all components
	}
	
	# _debugLog($data);
	
	$component = $data->xpath('item/title[.="'.$id.'"]/parent::*'); // return the componenet requested	
	if(!isset($component)) return null;
	return $component;
}

function sa_hc_exec_component($id){
	#debugLog('sa_hook_components: executing component '.$id);
	$component = sa_hc_get_component($id);
	# _debugLog($component);
	eval("?>" . strip_decode($component[0]->value) . "<?php "); 
}

sa_hc_init();

?>