<?php
if (!defined('_GNUBOARD_'))
  exit;

define('G5_HOOK_DEFAULT_PRIORITY', 8);

if (!function_exists('get_called_class')) {
  function get_called_class()
  {
    $bt = debug_backtrace();
    $lines = file($bt[1]['file']);
    preg_match(
      '/([a-zA-Z0-9\_]+)::' . $bt[1]['function'] . '/',
      $lines[$bt[1]['line'] - 1],
      $matches
    );
    return $matches[1];
  }
}

include_once(dirname(__FILE__) . '/Hook/hook.class.php');
include_once(dirname(__FILE__) . '/Hook/hook.extends.class.php');

function get_hook_class()
{

  if (class_exists('GML_Hook')) {
    return GML_Hook::getInstance();
  }

  return null;
}

function add_event($tag, $func, $priority = G5_HOOK_DEFAULT_PRIORITY, $args = 0)
{

  if ($hook = get_hook_class()) {
    $hook->addAction($tag, $func, $priority, $args);
  }
}

function run_event($tag, $arg = '')
{

  if ($hook = get_hook_class()) {

    $args = array();

    if (
      is_array($arg)
      &&
      isset($arg[0])
      &&
      is_object($arg[0])
      &&
      1 == count($arg)
    ) {
      $args[] =& $arg[0];
    } else {
      $args[] = $arg;
    }

    $numArgs = func_num_args();

    for ($a = 2; $a < $numArgs; $a++) {
      $args[] = func_get_arg($a);
    }

    $hook->doAction($tag, $args, false);
  }
}

function add_replace($tag, $func, $priority = G5_HOOK_DEFAULT_PRIORITY, $args = 1)
{

  if ($hook = get_hook_class()) {
    return $hook->addFilter($tag, $func, $priority, $args);
  }

  return null;
}

function run_replace($tag, $arg = '')
{

  if ($hook = get_hook_class()) {

    $args = array();

    if (
      is_array($arg)
      &&
      isset($arg[0])
      &&
      is_object($arg[0])
      &&
      1 == count($arg)
    ) {
      $args[] =& $arg[0];
    } else {
      $args[] = $arg;
    }

    $numArgs = func_num_args();

    for ($a = 2; $a < $numArgs; $a++) {
      $args[] = func_get_arg($a);
    }

    return $hook->apply_filters($tag, $args, false);
  }

  return null;
}

function delete_event($tag, $func, $priority = G5_HOOK_DEFAULT_PRIORITY)
{

  if ($hook = get_hook_class()) {
    return $hook->remove_action($tag, $func, $priority);
  }

  return null;
}

function delete_replace($tag, $func, $priority = G5_HOOK_DEFAULT_PRIORITY)
{

  if ($hook = get_hook_class()) {
    return $hook->remove_filter($tag, $func, $priority);
  }

  return null;
}

function get_hook_datas($type = '', $is_callback = '')
{
  if ($hook = get_hook_class()) {
    return $hook->get_properties($type, $is_callback);
  }

  return null;
}