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<?php
/**
* CodeIgniter
*
* An open source application development framework for PHP
*
* This content is released under the MIT License (MIT)
*
* Copyright (c) 2019 - 2022, CodeIgniter Foundation
*
* 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 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
* @copyright Copyright (c) 2019 - 2022, CodeIgniter Foundation (https://codeigniter.com/)
* @license https://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/userguide3/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;
}
}
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