system/libraries/Calendar.php - code-igniter-v3-giggi - Gitiles

 <?php
 /**
  * CodeIgniter
  *
  * An open source application development framework for PHP
  *
  * This content is released under the MIT License (MIT)
  *
  * Copyright (c) 2014 - 2018, 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 - 2018, 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');

 /**
  * CodeIgniter Calendar Class
  *
  * This class enables the creation of calendars
  *
  * @package		CodeIgniter
  * @subpackage	Libraries
  * @category	Libraries
  * @author		EllisLab Dev Team
  * @link		https://codeigniter.com/user_guide/libraries/calendar.html
  */
 class CI_Calendar {

 	/**
 	 * Calendar layout template
 	 *
 	 * @var mixed
 	 */
 	public $template = '';

 	/**
 	 * Replacements array for template
 	 *
 	 * @var array
 	 */
 	public $replacements = array();

 	/**
 	 * Day of the week to start the calendar on
 	 *
 	 * @var string
 	 */
 	public $start_day = 'sunday';

 	/**
 	 * How to display months
 	 *
 	 * @var string
 	 */
 	public $month_type = 'long';

 	/**
 	 * How to display names of days
 	 *
 	 * @var string
 	 */
 	public $day_type = 'abr';

 	/**
 	 * Whether to show next/prev month links
 	 *
 	 * @var bool
 	 */
 	public $show_next_prev = FALSE;

 	/**
 	 * Url base to use for next/prev month links
 	 *
 	 * @var bool
 	 */
 	public $next_prev_url = '';

 	/**
 	 * Show days of other months
 	 *
 	 * @var bool
 	 */
 	public $show_other_days = FALSE;

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

 	/**
 	 * CI Singleton
 	 *
 	 * @var object
 	 */
 	protected $CI;

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

 	/**
 	 * Class constructor
 	 *
 	 * Loads the calendar language file and sets the default time reference.
 	 *
 	 * @uses	CI_Lang::$is_loaded
 	 *
 	 * @param	array	$config	Calendar options
 	 * @return	void
 	 */
 	public function __construct($config = array())
 	{
 		$this->CI =& get_instance();
 		$this->CI->lang->load('calendar');

 		empty($config) OR $this->initialize($config);

 		log_message('info', 'Calendar Class Initialized');
 	}

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

 	/**
 	 * Initialize the user preferences
 	 *
 	 * Accepts an associative array as input, containing display preferences
 	 *
 	 * @param	array	config preferences
 	 * @return	CI_Calendar
 	 */
 	public function initialize($config = array())
 	{
 		foreach ($config as $key => $val)
 		{
 			if (isset($this->$key))
 			{
 				$this->$key = $val;
 			}
 		}

 		// Set the next_prev_url to the controller if required but not defined
 		if ($this->show_next_prev === TRUE && empty($this->next_prev_url))
 		{
 			$this->next_prev_url = $this->CI->config->site_url($this->CI->router->class.'/'.$this->CI->router->method);
 		}

 		return $this;
 	}

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

 	/**
 	 * Generate the calendar
 	 *
 	 * @param	int	the year
 	 * @param	int	the month
 	 * @param	array	the data to be shown in the calendar cells
 	 * @return	string
 	 */
 	public function generate($year = '', $month = '', $data = array())
 	{
 		$local_time = time();

 		// Set and validate the supplied month/year
 		if (empty($year))
 		{
 			$year = date('Y', $local_time);
 		}
 		elseif (strlen($year) === 1)
 		{
 			$year = '200'.$year;
 		}
 		elseif (strlen($year) === 2)
 		{
 			$year = '20'.$year;
 		}

 		if (empty($month))
 		{
 			$month = date('m', $local_time);
 		}
 		elseif (strlen($month) === 1)
 		{
 			$month = '0'.$month;
 		}

 		$adjusted_date = $this->adjust_date($month, $year);

 		$month	= $adjusted_date['month'];
 		$year	= $adjusted_date['year'];

 		// Determine the total days in the month
 		$total_days = $this->get_total_days($month, $year);

 		// Set the starting day of the week
 		$start_days	= array('sunday' => 0, 'monday' => 1, 'tuesday' => 2, 'wednesday' => 3, 'thursday' => 4, 'friday' => 5, 'saturday' => 6);
 		$start_day	= isset($start_days[$this->start_day]) ? $start_days[$this->start_day] : 0;

 		// Set the starting day number
 		$local_date = mktime(12, 0, 0, $month, 1, $year);
 		$date = getdate($local_date);
 		$day  = $start_day + 1 - $date['wday'];

 		while ($day > 1)
 		{
 			$day -= 7;
 		}

 		// Set the current month/year/day
 		// We use this to determine the "today" date
 		$cur_year	= date('Y', $local_time);
 		$cur_month	= date('m', $local_time);
 		$cur_day	= date('j', $local_time);

 		$is_current_month = ($cur_year == $year && $cur_month == $month);

 		// Generate the template data array
 		$this->parse_template();

 		// Begin building the calendar output
 		$out = $this->replacements['table_open']."\n\n".$this->replacements['heading_row_start']."\n";

 		// "previous" month link
 		if ($this->show_next_prev === TRUE)
 		{
 			// Add a trailing slash to the URL if needed
 			$this->next_prev_url = preg_replace('/(.+?)\/*$/', '\\1/', $this->next_prev_url);

 			$adjusted_date = $this->adjust_date($month - 1, $year);
 			$out .= str_replace('{previous_url}', $this->next_prev_url.$adjusted_date['year'].'/'.$adjusted_date['month'], $this->replacements['heading_previous_cell'])."\n";
 		}

 		// Heading containing the month/year
 		$colspan = ($this->show_next_prev === TRUE) ? 5 : 7;

 		$this->replacements['heading_title_cell'] = str_replace('{colspan}', $colspan,
 								str_replace('{heading}', $this->get_month_name($month).'&nbsp;'.$year, $this->replacements['heading_title_cell']));

 		$out .= $this->replacements['heading_title_cell']."\n";

 		// "next" month link
 		if ($this->show_next_prev === TRUE)
 		{
 			$adjusted_date = $this->adjust_date($month + 1, $year);
 			$out .= str_replace('{next_url}', $this->next_prev_url.$adjusted_date['year'].'/'.$adjusted_date['month'], $this->replacements['heading_next_cell']);
 		}

 		$out .= "\n".$this->replacements['heading_row_end']."\n\n"
 			// Write the cells containing the days of the week
 			.$this->replacements['week_row_start']."\n";

 		$day_names = $this->get_day_names();

 		for ($i = 0; $i < 7; $i ++)
 		{
 			$out .= str_replace('{week_day}', $day_names[($start_day + $i) %7], $this->replacements['week_day_cell']);
 		}

 		$out .= "\n".$this->replacements['week_row_end']."\n";

 		// Build the main body of the calendar
 		while ($day <= $total_days)
 		{
 			$out .= "\n".$this->replacements['cal_row_start']."\n";

 			for ($i = 0; $i < 7; $i++)
 			{
 				if ($day > 0 && $day <= $total_days)
 				{
 					$out .= ($is_current_month === TRUE && $day == $cur_day) ? $this->replacements['cal_cell_start_today'] : $this->replacements['cal_cell_start'];

 					if (isset($data[$day]))
 					{
 						// Cells with content
 						$temp = ($is_current_month === TRUE && $day == $cur_day) ?
 								$this->replacements['cal_cell_content_today'] : $this->replacements['cal_cell_content'];
 						$out .= str_replace(array('{content}', '{day}'), array($data[$day], $day), $temp);
 					}
 					else
 					{
 						// Cells with no content
 						$temp = ($is_current_month === TRUE && $day == $cur_day) ?
 								$this->replacements['cal_cell_no_content_today'] : $this->replacements['cal_cell_no_content'];
 						$out .= str_replace('{day}', $day, $temp);
 					}

 					$out .= ($is_current_month === TRUE && $day == $cur_day) ? $this->replacements['cal_cell_end_today'] : $this->replacements['cal_cell_end'];
 				}
 				elseif ($this->show_other_days === TRUE)
 				{
 					$out .= $this->replacements['cal_cell_start_other'];

 					if ($day <= 0)
 					{
 						// Day of previous month
 						$prev_month = $this->adjust_date($month - 1, $year);
 						$prev_month_days = $this->get_total_days($prev_month['month'], $prev_month['year']);
 						$out .= str_replace('{day}', $prev_month_days + $day, $this->replacements['cal_cell_other']);
 					}
 					else
 					{
 						// Day of next month
 						$out .= str_replace('{day}', $day - $total_days, $this->replacements['cal_cell_other']);
 					}

 					$out .= $this->replacements['cal_cell_end_other'];
 				}
 				else
 				{
 					// Blank cells
 					$out .= $this->replacements['cal_cell_start'].$this->replacements['cal_cell_blank'].$this->replacements['cal_cell_end'];
 				}

 				$day++;
 			}

 			$out .= "\n".$this->replacements['cal_row_end']."\n";
 		}

 		return $out .= "\n".$this->replacements['table_close'];
 	}

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

 	/**
 	 * Get Month Name
 	 *
 	 * Generates a textual month name based on the numeric
 	 * month provided.
 	 *
 	 * @param	int	the month
 	 * @return	string
 	 */
 	public function get_month_name($month)
 	{
 		if ($this->month_type === 'short')
 		{
 			$month_names = array('01' => 'cal_jan', '02' => 'cal_feb', '03' => 'cal_mar', '04' => 'cal_apr', '05' => 'cal_may', '06' => 'cal_jun', '07' => 'cal_jul', '08' => 'cal_aug', '09' => 'cal_sep', '10' => 'cal_oct', '11' => 'cal_nov', '12' => 'cal_dec');
 		}
 		else
 		{
 			$month_names = array('01' => 'cal_january', '02' => 'cal_february', '03' => 'cal_march', '04' => 'cal_april', '05' => 'cal_mayl', '06' => 'cal_june', '07' => 'cal_july', '08' => 'cal_august', '09' => 'cal_september', '10' => 'cal_october', '11' => 'cal_november', '12' => 'cal_december');
 		}

 		return ($this->CI->lang->line($month_names[$month]) === FALSE)
 			? ucfirst(substr($month_names[$month], 4))
 			: $this->CI->lang->line($month_names[$month]);
 	}

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

 	/**
 	 * Get Day Names
 	 *
 	 * Returns an array of day names (Sunday, Monday, etc.) based
 	 * on the type. Options: long, short, abr
 	 *
 	 * @param	string
 	 * @return	array
 	 */
 	public function get_day_names($day_type = '')
 	{
 		if ($day_type !== '')
 		{
 			$this->day_type = $day_type;
 		}

 		if ($this->day_type === 'long')
 		{
 			$day_names = array('sunday', 'monday', 'tuesday', 'wednesday', 'thursday', 'friday', 'saturday');
 		}
 		elseif ($this->day_type === 'short')
 		{
 			$day_names = array('sun', 'mon', 'tue', 'wed', 'thu', 'fri', 'sat');
 		}
 		else
 		{
 			$day_names = array('su', 'mo', 'tu', 'we', 'th', 'fr', 'sa');
 		}

 		$days = array();
 		for ($i = 0, $c = count($day_names); $i < $c; $i++)
 		{
 			$days[] = ($this->CI->lang->line('cal_'.$day_names[$i]) === FALSE) ? ucfirst($day_names[$i]) : $this->CI->lang->line('cal_'.$day_names[$i]);
 		}

 		return $days;
 	}

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

 	/**
 	 * Adjust Date
 	 *
 	 * This function makes sure that we have a valid month/year.
 	 * For example, if you submit 13 as the month, the year will
 	 * increment and the month will become January.
 	 *
 	 * @param	int	the month
 	 * @param	int	the year
 	 * @return	array
 	 */
 	public function adjust_date($month, $year)
 	{
 		$date = array();

 		$date['month']	= $month;
 		$date['year']	= $year;

 		while ($date['month'] > 12)
 		{
 			$date['month'] -= 12;
 			$date['year']++;
 		}

 		while ($date['month'] <= 0)
 		{
 			$date['month'] += 12;
 			$date['year']--;
 		}

 		if (strlen($date['month']) === 1)
 		{
 			$date['month'] = '0'.$date['month'];
 		}

 		return $date;
 	}

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

 	/**
 	 * Total days in a given month
 	 *
 	 * @param	int	the month
 	 * @param	int	the year
 	 * @return	int
 	 */
 	public function get_total_days($month, $year)
 	{
 		$this->CI->load->helper('date');
 		return days_in_month($month, $year);
 	}

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

 	/**
 	 * Set Default Template Data
 	 *
 	 * This is used in the event that the user has not created their own template
 	 *
 	 * @return	array
 	 */
 	public function default_template()
 	{
 		return array(
 			'table_open'				=> '<table border="0" cellpadding="4" cellspacing="0">',
 			'heading_row_start'			=> '<tr>',
 			'heading_previous_cell'		=> '<th><a href="{previous_url}">&lt;&lt;</a></th>',
 			'heading_title_cell'		=> '<th colspan="{colspan}">{heading}</th>',
 			'heading_next_cell'			=> '<th><a href="{next_url}">&gt;&gt;</a></th>',
 			'heading_row_end'			=> '</tr>',
 			'week_row_start'			=> '<tr>',
 			'week_day_cell'				=> '<td>{week_day}</td>',
 			'week_row_end'				=> '</tr>',
 			'cal_row_start'				=> '<tr>',
 			'cal_cell_start'			=> '<td>',
 			'cal_cell_start_today'		=> '<td>',
 			'cal_cell_start_other'		=> '<td style="color: #666;">',
 			'cal_cell_content'			=> '<a href="{content}">{day}</a>',
 			'cal_cell_content_today'	=> '<a href="{content}"><strong>{day}</strong></a>',
 			'cal_cell_no_content'		=> '{day}',
 			'cal_cell_no_content_today'	=> '<strong>{day}</strong>',
 			'cal_cell_blank'			=> '&nbsp;',
 			'cal_cell_other'			=> '{day}',
 			'cal_cell_end'				=> '</td>',
 			'cal_cell_end_today'		=> '</td>',
 			'cal_cell_end_other'		=> '</td>',
 			'cal_row_end'				=> '</tr>',
 			'table_close'				=> '</table>'
 		);
 	}

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

 	/**
 	 * Parse Template
 	 *
 	 * Harvests the data within the template {pseudo-variables}
 	 * used to display the calendar
 	 *
 	 * @return	CI_Calendar
 	 */
 	public function parse_template()
 	{
 		$this->replacements = $this->default_template();

 		if (empty($this->template))
 		{
 			return $this;
 		}

 		if (is_string($this->template))
 		{
 			$today = array('cal_cell_start_today', 'cal_cell_content_today', 'cal_cell_no_content_today', 'cal_cell_end_today');

 			foreach (array('table_open', 'table_close', 'heading_row_start', 'heading_previous_cell', 'heading_title_cell', 'heading_next_cell', 'heading_row_end', 'week_row_start', 'week_day_cell', 'week_row_end', 'cal_row_start', 'cal_cell_start', 'cal_cell_content', 'cal_cell_no_content', 'cal_cell_blank', 'cal_cell_end', 'cal_row_end', 'cal_cell_start_today', 'cal_cell_content_today', 'cal_cell_no_content_today', 'cal_cell_end_today', 'cal_cell_start_other', 'cal_cell_other', 'cal_cell_end_other') as $val)
 			{
 				if (preg_match('/\{'.$val.'\}(.*?)\{\/'.$val.'\}/si', $this->template, $match))
 				{
 					$this->replacements[$val] = $match[1];
 				}
 				elseif (in_array($val, $today, TRUE))
 				{
 					$this->replacements[$val] = $this->replacements[substr($val, 0, -6)];
 				}
 			}
 		}
 		elseif (is_array($this->template))
 		{
 			$this->replacements = array_merge($this->replacements, $this->template);
 		}

 		return $this;
 	}

 }
	<?php
	/**
	* CodeIgniter
	*
	* An open source application development framework for PHP
	*
	* This content is released under the MIT License (MIT)
	*
	* Copyright (c) 2014 - 2018, 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 - 2018, 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');

	/**
	* CodeIgniter Calendar Class
	*
	* This class enables the creation of calendars
	*
	* @package CodeIgniter
	* @subpackage Libraries
	* @category Libraries
	* @author EllisLab Dev Team
	* @link https://codeigniter.com/user_guide/libraries/calendar.html
	*/
	class CI_Calendar {

	/**
	* Calendar layout template
	*
	* @var mixed
	*/
	public $template = '';

	/**
	* Replacements array for template
	*
	* @var array
	*/
	public $replacements = array();

	/**
	* Day of the week to start the calendar on
	*
	* @var string
	*/
	public $start_day = 'sunday';

	/**
	* How to display months
	*
	* @var string
	*/
	public $month_type = 'long';

	/**
	* How to display names of days
	*
	* @var string
	*/
	public $day_type = 'abr';

	/**
	* Whether to show next/prev month links
	*
	* @var bool
	*/
	public $show_next_prev = FALSE;

	/**
	* Url base to use for next/prev month links
	*
	* @var bool
	*/
	public $next_prev_url = '';

	/**
	* Show days of other months
	*
	* @var bool
	*/
	public $show_other_days = FALSE;

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

	/**
	* CI Singleton
	*
	* @var object
	*/
	protected $CI;

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

	/**
	* Class constructor
	*
	* Loads the calendar language file and sets the default time reference.
	*
	* @uses CI_Lang::$is_loaded
	*
	* @param array $config Calendar options
	* @return void
	*/
	public function __construct($config = array())
	{
	$this->CI =& get_instance();
	$this->CI->lang->load('calendar');

	empty($config) OR $this->initialize($config);

	log_message('info', 'Calendar Class Initialized');
	}

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

	/**
	* Initialize the user preferences
	*
	* Accepts an associative array as input, containing display preferences
	*
	* @param array config preferences
	* @return CI_Calendar
	*/
	public function initialize($config = array())
	{
	foreach ($config as $key => $val)
	{
	if (isset($this->$key))
	{
	$this->$key = $val;
	}
	}

	// Set the next_prev_url to the controller if required but not defined
	if ($this->show_next_prev === TRUE && empty($this->next_prev_url))
	{
	$this->next_prev_url = $this->CI->config->site_url($this->CI->router->class.'/'.$this->CI->router->method);
	}

	return $this;
	}

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

	/**
	* Generate the calendar
	*
	* @param int the year
	* @param int the month
	* @param array the data to be shown in the calendar cells
	* @return string
	*/
	public function generate($year = '', $month = '', $data = array())
	{
	$local_time = time();

	// Set and validate the supplied month/year
	if (empty($year))
	{
	$year = date('Y', $local_time);
	}
	elseif (strlen($year) === 1)
	{
	$year = '200'.$year;
	}
	elseif (strlen($year) === 2)
	{
	$year = '20'.$year;
	}

	if (empty($month))
	{
	$month = date('m', $local_time);
	}
	elseif (strlen($month) === 1)
	{
	$month = '0'.$month;
	}

	$adjusted_date = $this->adjust_date($month, $year);

	$month = $adjusted_date['month'];
	$year = $adjusted_date['year'];

	// Determine the total days in the month
	$total_days = $this->get_total_days($month, $year);

	// Set the starting day of the week
	$start_days = array('sunday' => 0, 'monday' => 1, 'tuesday' => 2, 'wednesday' => 3, 'thursday' => 4, 'friday' => 5, 'saturday' => 6);
	$start_day = isset($start_days[$this->start_day]) ? $start_days[$this->start_day] : 0;

	// Set the starting day number
	$local_date = mktime(12, 0, 0, $month, 1, $year);
	$date = getdate($local_date);
	$day = $start_day + 1 - $date['wday'];

	while ($day > 1)
	{
	$day -= 7;
	}

	// Set the current month/year/day
	// We use this to determine the "today" date
	$cur_year = date('Y', $local_time);
	$cur_month = date('m', $local_time);
	$cur_day = date('j', $local_time);

	$is_current_month = ($cur_year == $year && $cur_month == $month);

	// Generate the template data array
	$this->parse_template();

	// Begin building the calendar output
	$out = $this->replacements['table_open']."\n\n".$this->replacements['heading_row_start']."\n";

	// "previous" month link
	if ($this->show_next_prev === TRUE)
	{
	// Add a trailing slash to the URL if needed
	$this->next_prev_url = preg_replace('/(.+?)\/*$/', '\\1/', $this->next_prev_url);

	$adjusted_date = $this->adjust_date($month - 1, $year);
	$out .= str_replace('{previous_url}', $this->next_prev_url.$adjusted_date['year'].'/'.$adjusted_date['month'], $this->replacements['heading_previous_cell'])."\n";
	}

	// Heading containing the month/year
	$colspan = ($this->show_next_prev === TRUE) ? 5 : 7;

	$this->replacements['heading_title_cell'] = str_replace('{colspan}', $colspan,
	str_replace('{heading}', $this->get_month_name($month).' '.$year, $this->replacements['heading_title_cell']));

	$out .= $this->replacements['heading_title_cell']."\n";

	// "next" month link
	if ($this->show_next_prev === TRUE)
	{
	$adjusted_date = $this->adjust_date($month + 1, $year);
	$out .= str_replace('{next_url}', $this->next_prev_url.$adjusted_date['year'].'/'.$adjusted_date['month'], $this->replacements['heading_next_cell']);
	}

	$out .= "\n".$this->replacements['heading_row_end']."\n\n"
	// Write the cells containing the days of the week
	.$this->replacements['week_row_start']."\n";

	$day_names = $this->get_day_names();

	for ($i = 0; $i < 7; $i ++)
	{
	$out .= str_replace('{week_day}', $day_names[($start_day + $i) %7], $this->replacements['week_day_cell']);
	}

	$out .= "\n".$this->replacements['week_row_end']."\n";

	// Build the main body of the calendar
	while ($day <= $total_days)
	{
	$out .= "\n".$this->replacements['cal_row_start']."\n";

	for ($i = 0; $i < 7; $i++)
	{
	if ($day > 0 && $day <= $total_days)
	{
	$out .= ($is_current_month === TRUE && $day == $cur_day) ? $this->replacements['cal_cell_start_today'] : $this->replacements['cal_cell_start'];

	if (isset($data[$day]))
	{
	// Cells with content
	$temp = ($is_current_month === TRUE && $day == $cur_day) ?
	$this->replacements['cal_cell_content_today'] : $this->replacements['cal_cell_content'];
	$out .= str_replace(array('{content}', '{day}'), array($data[$day], $day), $temp);
	}
	else
	{
	// Cells with no content
	$temp = ($is_current_month === TRUE && $day == $cur_day) ?
	$this->replacements['cal_cell_no_content_today'] : $this->replacements['cal_cell_no_content'];
	$out .= str_replace('{day}', $day, $temp);
	}

	$out .= ($is_current_month === TRUE && $day == $cur_day) ? $this->replacements['cal_cell_end_today'] : $this->replacements['cal_cell_end'];
	}
	elseif ($this->show_other_days === TRUE)
	{
	$out .= $this->replacements['cal_cell_start_other'];

	if ($day <= 0)
	{
	// Day of previous month
	$prev_month = $this->adjust_date($month - 1, $year);
	$prev_month_days = $this->get_total_days($prev_month['month'], $prev_month['year']);
	$out .= str_replace('{day}', $prev_month_days + $day, $this->replacements['cal_cell_other']);
	}
	else
	{
	// Day of next month
	$out .= str_replace('{day}', $day - $total_days, $this->replacements['cal_cell_other']);
	}

	$out .= $this->replacements['cal_cell_end_other'];
	}
	else
	{
	// Blank cells
	$out .= $this->replacements['cal_cell_start'].$this->replacements['cal_cell_blank'].$this->replacements['cal_cell_end'];
	}

	$day++;
	}

	$out .= "\n".$this->replacements['cal_row_end']."\n";
	}

	return $out .= "\n".$this->replacements['table_close'];
	}

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

	/**
	* Get Month Name
	*
	* Generates a textual month name based on the numeric
	* month provided.
	*
	* @param int the month
	* @return string
	*/
	public function get_month_name($month)
	{
	if ($this->month_type === 'short')
	{
	$month_names = array('01' => 'cal_jan', '02' => 'cal_feb', '03' => 'cal_mar', '04' => 'cal_apr', '05' => 'cal_may', '06' => 'cal_jun', '07' => 'cal_jul', '08' => 'cal_aug', '09' => 'cal_sep', '10' => 'cal_oct', '11' => 'cal_nov', '12' => 'cal_dec');
	}
	else
	{
	$month_names = array('01' => 'cal_january', '02' => 'cal_february', '03' => 'cal_march', '04' => 'cal_april', '05' => 'cal_mayl', '06' => 'cal_june', '07' => 'cal_july', '08' => 'cal_august', '09' => 'cal_september', '10' => 'cal_october', '11' => 'cal_november', '12' => 'cal_december');
	}

	return ($this->CI->lang->line($month_names[$month]) === FALSE)
	? ucfirst(substr($month_names[$month], 4))
	: $this->CI->lang->line($month_names[$month]);
	}

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

	/**
	* Get Day Names
	*
	* Returns an array of day names (Sunday, Monday, etc.) based
	* on the type. Options: long, short, abr
	*
	* @param string
	* @return array
	*/
	public function get_day_names($day_type = '')
	{
	if ($day_type !== '')
	{
	$this->day_type = $day_type;
	}

	if ($this->day_type === 'long')
	{
	$day_names = array('sunday', 'monday', 'tuesday', 'wednesday', 'thursday', 'friday', 'saturday');
	}
	elseif ($this->day_type === 'short')
	{
	$day_names = array('sun', 'mon', 'tue', 'wed', 'thu', 'fri', 'sat');
	}
	else
	{
	$day_names = array('su', 'mo', 'tu', 'we', 'th', 'fr', 'sa');
	}

	$days = array();
	for ($i = 0, $c = count($day_names); $i < $c; $i++)
	{
	$days[] = ($this->CI->lang->line('cal_'.$day_names[$i]) === FALSE) ? ucfirst($day_names[$i]) : $this->CI->lang->line('cal_'.$day_names[$i]);
	}

	return $days;
	}

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

	/**
	* Adjust Date
	*
	* This function makes sure that we have a valid month/year.
	* For example, if you submit 13 as the month, the year will
	* increment and the month will become January.
	*
	* @param int the month
	* @param int the year
	* @return array
	*/
	public function adjust_date($month, $year)
	{
	$date = array();

	$date['month'] = $month;
	$date['year'] = $year;

	while ($date['month'] > 12)
	{
	$date['month'] -= 12;
	$date['year']++;
	}

	while ($date['month'] <= 0)
	{
	$date['month'] += 12;
	$date['year']--;
	}

	if (strlen($date['month']) === 1)
	{
	$date['month'] = '0'.$date['month'];
	}

	return $date;
	}

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

	/**
	* Total days in a given month
	*
	* @param int the month
	* @param int the year
	* @return int
	*/
	public function get_total_days($month, $year)
	{
	$this->CI->load->helper('date');
	return days_in_month($month, $year);
	}

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

	/**
	* Set Default Template Data
	*
	* This is used in the event that the user has not created their own template
	*
	* @return array
	*/
	public function default_template()
	{
	return array(
	'table_open' => '<table border="0" cellpadding="4" cellspacing="0">',
	'heading_row_start' => '<tr>',
	'heading_previous_cell' => '<th><a href="{previous_url}"><<</a></th>',
	'heading_title_cell' => '<th colspan="{colspan}">{heading}</th>',
	'heading_next_cell' => '<th><a href="{next_url}">>></a></th>',
	'heading_row_end' => '</tr>',
	'week_row_start' => '<tr>',
	'week_day_cell' => '<td>{week_day}</td>',
	'week_row_end' => '</tr>',
	'cal_row_start' => '<tr>',
	'cal_cell_start' => '<td>',
	'cal_cell_start_today' => '<td>',
	'cal_cell_start_other' => '<td style="color: #666;">',
	'cal_cell_content' => '<a href="{content}">{day}</a>',
	'cal_cell_content_today' => '<a href="{content}"><strong>{day}</strong></a>',
	'cal_cell_no_content' => '{day}',
	'cal_cell_no_content_today' => '<strong>{day}</strong>',
	'cal_cell_blank' => ' ',
	'cal_cell_other' => '{day}',
	'cal_cell_end' => '</td>',
	'cal_cell_end_today' => '</td>',
	'cal_cell_end_other' => '</td>',
	'cal_row_end' => '</tr>',
	'table_close' => '</table>'
	);
	}

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

	/**
	* Parse Template
	*
	* Harvests the data within the template {pseudo-variables}
	* used to display the calendar
	*
	* @return CI_Calendar
	*/
	public function parse_template()
	{
	$this->replacements = $this->default_template();

	if (empty($this->template))
	{
	return $this;
	}

	if (is_string($this->template))
	{
	$today = array('cal_cell_start_today', 'cal_cell_content_today', 'cal_cell_no_content_today', 'cal_cell_end_today');

	foreach (array('table_open', 'table_close', 'heading_row_start', 'heading_previous_cell', 'heading_title_cell', 'heading_next_cell', 'heading_row_end', 'week_row_start', 'week_day_cell', 'week_row_end', 'cal_row_start', 'cal_cell_start', 'cal_cell_content', 'cal_cell_no_content', 'cal_cell_blank', 'cal_cell_end', 'cal_row_end', 'cal_cell_start_today', 'cal_cell_content_today', 'cal_cell_no_content_today', 'cal_cell_end_today', 'cal_cell_start_other', 'cal_cell_other', 'cal_cell_end_other') as $val)
	{
	if (preg_match('/\{'.$val.'\}(.*?)\{\/'.$val.'\}/si', $this->template, $match))
	{
	$this->replacements[$val] = $match[1];
	}
	elseif (in_array($val, $today, TRUE))
	{
	$this->replacements[$val] = $this->replacements[substr($val, 0, -6)];
	}
	}
	}
	elseif (is_array($this->template))
	{
	$this->replacements = array_merge($this->replacements, $this->template);
	}

	return $this;
	}

	}