imagecms/ImageCMS

<?php

if (!defined('BASEPATH')) {
    exit('No direct script access allowed');
}

class Cms_hooks
{

    private $hooks_file = NULL;

    public function __construct() {
        $ci = & get_instance();

        if (!$ci->config->item('is_installed') && !function_exists('get_hook')) {

            function get_hook() {
                return FALSE;
            }

            return FALSE;
        }

        $this->hooks_file = BASEPATH . 'cache/hooks' . EXT;

        if (!file_exists($this->hooks_file) OR $ci->config->item('rebuild_hooks_tree') === TRUE) {
            $this->build_hooks();
        }

        if (file_exists($this->hooks_file)) {
            include $this->hooks_file;
        } else {
            show_error('Ошибка загрузки файла хуков.');
        }
    }

    public function build_hooks() {
        $ci = \CI::$APP;

        $ci->load->library('lib_xml');

        $xml = '<?xml version="1.0" encoding="UTF-8"?><hooks>';

        // Get all installed modules
        $ci->db->select('name');

        $modules = $ci->db->get('components');

        if ($modules) {
            $modules = $modules->result_array();
        } else {
            show_error($ci->db->_error_message());
        }

        $modules[]['name'] = 'core';

        // Search for hooks.xml in all installed modules
        foreach ($modules as $m) {
            $xml_file = getModulePath($m['name']) . '/hooks.xml';
            if (file_exists($xml_file)) {
                $xml .= file_get_contents($xml_file);
            }
        }

        $xml .= "\n</hooks>";

        $parser = xml_parser_create();
        xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
        xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 0);
        xml_parse_into_struct($parser, $xml, $vals);
        xml_parser_free($parser);

        $tmp = [];

        foreach ($vals as $k => $v) {
            if (isset($v['type']) && isset($v['value']) && isset($v['attributes'])) {
                $hookId = trim($v['attributes']['id']);

                if (empty($tmp[$hookId])) {
                    $tmp[$hookId] = '';
                }

                $hookValue = trim($v['value']);
                if ($v['type'] === 'complete' && !empty($hookValue) && !empty($hookId)) {
                    $tmp[$hookId] .= $hookValue;
                }
            }
        }

        $this->create_hooks_file($tmp);
    }

    private function create_hooks_file($hooks_arr = []) {
        $ci = & get_instance();
        $ci->load->helper('file');

        $tmp = '';

        if (count($hooks_arr) > 0) {
            foreach ($hooks_arr as $k => $v) {
                $tmp = $tmp . '\'' . $k . '\'' . ' => \'' . str_replace("'", "\'", $v) . '\',' . "\n";
            }
        }

        $tmp = str_replace("\\\'", "\'", $tmp);

        $template = "<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

function get_hook(\$hook_id)
{
\$cms_hooks = array (
    $tmp
);

    if (isset(\$cms_hooks[\$hook_id]))
    {
        return \$cms_hooks[\$hook_id];
    }
    else
    {
       return FALSE;
    }
}

";
        mkdir('./system/cache/templates_c', 0777, TRUE);

        write_file($this->hooks_file, $template);
    }

}