Subversion-Projekte lars-tiefland.ci

<?php
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP
 *
 * This content is released under the MIT License (MIT)
 *
 * Copyright (c) 2014 - 2017, British Columbia Institute of Technology
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * @package     CodeIgniter
 * @author      EllisLab Dev Team
 * @copyright   Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
 * @copyright   Copyright (c) 2014 - 2017, British Columbia Institute of Technology (http://bcit.ca/)
 * @license     http://opensource.org/licenses/MIT      MIT License
 * @link        https://codeigniter.com
 * @since       Version 1.0.0
 * @filesource
 */
defined('BASEPATH') OR exit('No direct script access allowed');

/**
 * Parser Class
 *
 * @package             CodeIgniter
 * @subpackage  Libraries
 * @category    Parser
 * @author              EllisLab Dev Team
 * @link                https://codeigniter.com/user_guide/libraries/parser.html
 */
class CI_Parser {

        /**
         * Left delimiter character for pseudo vars
         *
         * @var string
         */
        public $l_delim = '{';

        /**
         * Right delimiter character for pseudo vars
         *
         * @var string
         */
        public $r_delim = '}';

        /**
         * Reference to CodeIgniter instance
         *
         * @var object
         */
        protected $CI;

        // --------------------------------------------------------------------

        /**
         * Class constructor
         *
         * @return      void
         */
        public function __construct()
        {
                $this->CI =& get_instance();
                log_message('info', 'Parser Class Initialized');
        }

        // --------------------------------------------------------------------

        /**
         * Parse a template
         *
         * Parses pseudo-variables contained in the specified template view,
         * replacing them with the data in the second param
         *
         * @param       string
         * @param       array
         * @param       bool
         * @return      string
         */
        public function parse($template, $data, $return = FALSE)
        {
                $template = $this->CI->load->view($template, $data, TRUE);

                return $this->_parse($template, $data, $return);
        }

        // --------------------------------------------------------------------

        /**
         * Parse a String
         *
         * Parses pseudo-variables contained in the specified string,
         * replacing them with the data in the second param
         *
         * @param       string
         * @param       array
         * @param       bool
         * @return      string
         */
        public function parse_string($template, $data, $return = FALSE)
        {
                return $this->_parse($template, $data, $return);
        }

        // --------------------------------------------------------------------

        /**
         * Parse a template
         *
         * Parses pseudo-variables contained in the specified template,
         * replacing them with the data in the second param
         *
         * @param       string
         * @param       array
         * @param       bool
         * @return      string
         */
        protected function _parse($template, $data, $return = FALSE)
        {
                if ($template === '')
                {
                        return FALSE;
                }

                $replace = array();
                foreach ($data as $key => $val)
                {
                        $replace = array_merge(
                                $replace,
                                is_array($val)
                                        ? $this->_parse_pair($key, $val, $template)
                                        : $this->_parse_single($key, (string) $val, $template)
                        );
                }

                unset($data);
                $template = strtr($template, $replace);

                if ($return === FALSE)
                {
                        $this->CI->output->append_output($template);
                }

                return $template;
        }

        // --------------------------------------------------------------------

        /**
         * Set the left/right variable delimiters
         *
         * @param       string
         * @param       string
         * @return      void
         */
        public function set_delimiters($l = '{', $r = '}')
        {
                $this->l_delim = $l;
                $this->r_delim = $r;
        }

        // --------------------------------------------------------------------

        /**
         * Parse a single key/value
         *
         * @param       string
         * @param       string
         * @param       string
         * @return      string
         */
        protected function _parse_single($key, $val, $string)
        {
                return array($this->l_delim.$key.$this->r_delim => (string) $val);
        }

        // --------------------------------------------------------------------

        /**
         * Parse a tag pair
         *
         * Parses tag pairs: {some_tag} string... {/some_tag}
         *
         * @param       string
         * @param       array
         * @param       string
         * @return      string
         */
        protected function _parse_pair($variable, $data, $string)
        {
                $replace = array();
                preg_match_all(
                        '#'.preg_quote($this->l_delim.$variable.$this->r_delim).'(.+?)'.preg_quote($this->l_delim.'/'.$variable.$this->r_delim).'#s',
                        $string,
                        $matches,
                        PREG_SET_ORDER
                );

                foreach ($matches as $match)
                {
                        $str = '';
                        foreach ($data as $row)
                        {
                                $temp = array();
                                foreach ($row as $key => $val)
                                {
                                        if (is_array($val))
                                        {
                                                $pair = $this->_parse_pair($key, $val, $match[1]);
                                                if ( ! empty($pair))
                                                {
                                                        $temp = array_merge($temp, $pair);
                                                }

                                                continue;
                                        }

                                        $temp[$this->l_delim.$key.$this->r_delim] = $val;
                                }

                                $str .= strtr($match[1], $temp);
                        }

                        $replace[$match[0]] = $str;
                }

                return $replace;
        }

}