CI =& get_instance(); if ( ! in_array('calendar_lang'.EXT, $this->CI->lang->is_loaded, TRUE)) { $this->CI->lang->load('calendar'); } $this->local_time = time(); log_message('debug', "Calendar Class Initialized"); } // -------------------------------------------------------------------- /** * Initialize the user preferences * * Accepts an associative array as input, containing display preferences * * @access public * @param array config preferences * @return void */ function initialize($config = array()) { foreach ($config as $key => $val) { if (isset($this->$key)) { $this->$key = $val; } } } // -------------------------------------------------------------------- /** * Generate the calendar * * @access public * @param integer the year * @param integer the month * @param array the data to be shown in the calendar cells * @return string */ function generate($year = '', $month = '', $data = array()) { // Set and validate the supplied month/year if ($year == '') $year = date("Y", $this->local_time); if ($month == '') $month = date("m", $this->local_time); if (strlen($year) == 1) $year = '200'.$year; if (strlen($year) == 2) $year = '20'.$year; if (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])) ? 0 : $start_days[$this->start_day]; // 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", $this->local_time); $cur_month = date("m", $this->local_time); $cur_day = date("j", $this->local_time); $is_current_month = ($cur_year == $year AND $cur_month == $month) ? TRUE : FALSE; // Generate the template data array $this->parse_template(); // Begin building the calendar output $out = $this->temp['table_open']; $out .= "\n"; $out .= "\n"; $out .= $this->temp['heading_row_start']; $out .= "\n"; // "previous" month link if ($this->show_next_prev == TRUE) { $adjusted_date = $this->adjust_date($month - 1, $year); $out .= str_replace('{previous_url}', $this->next_prev_url.$adjusted_date['year'].'/'.$adjusted_date['month'], $this->temp['heading_previous_cell']); $out .= "\n"; } // Heading containing the month/year $colspan = ($this->show_next_prev == TRUE) ? 5 : 7; $this->temp['heading_title_cell'] = str_replace('{colspan}', $colspan, $this->temp['heading_title_cell']); $this->temp['heading_title_cell'] = str_replace('{heading}', $this->get_month_name($month)." ".$year, $this->temp['heading_title_cell']); $out .= $this->temp['heading_title_cell']; $out .= "\n"; // "next" month link if ($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->temp['heading_next_cell']); } $out .= "\n"; $out .= $this->temp['heading_row_end']; $out .= "\n"; // Write the cells containing the days of the week $out .= "\n"; $out .= $this->temp['week_row_start']; $out .= "\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->temp['week_day_cell']); } $out .= "\n"; $out .= $this->temp['week_row_end']; $out .= "\n"; // Build the main body of the calendar while ($day <= $total_days) { $out .= "\n"; $out .= $this->temp['cal_row_start']; $out .= "\n"; for ($i = 0; $i < 7; $i++) { $out .= ($is_current_month == TRUE AND $day == $cur_day) ? $this->temp['cal_cell_start_today'] : $this->temp['cal_cell_start']; if ($day > 0 AND $day <= $total_days) { if (isset($data[$day])) { // Cells with content $temp = ($is_current_month == TRUE AND $day == $cur_day) ? $this->temp['cal_cell_content_today'] : $this->temp['cal_cell_content']; $out .= str_replace('{day}', $day, str_replace('{content}', $data[$day], $temp)); } else { // Cells with no content $temp = ($is_current_month == TRUE AND $day == $cur_day) ? $this->temp['cal_cell_no_content_today'] : $this->temp['cal_cell_no_content']; $out .= str_replace('{day}', $day, $temp); } } else { // Blank cells $out .= $this->temp['cal_cell_blank']; } $out .= ($is_current_month == TRUE AND $day == $cur_day) ? $this->temp['cal_cell_end_today'] : $this->temp['cal_cell_end']; $day++; } $out .= "\n"; $out .= $this->temp['cal_row_end']; $out .= "\n"; } $out .= "\n"; $out .= $this->temp['table_close']; return $out; } // -------------------------------------------------------------------- /** * Get Month Name * * Generates a texual month name based on the numeric * month provided. * * @access public * @param integer the month * @return string */ function get_month_name($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'); } $month = $month_names[$month]; if ($this->CI->lang->line($month) === FALSE) { return ucfirst(str_replace('cal_', '', $month)); } return $this->CI->lang->line($month); } // -------------------------------------------------------------------- /** * Get Day Names * * Returns an array of day names (Sunday, Monday, etc.) based * on the type. Options: long, short, abrev * * @access public * @param string * @return array */ 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'); } $days = array(); foreach ($day_names as $val) { $days[] = ($this->CI->lang->line('cal_'.$val) === FALSE) ? ucfirst($val) : $this->CI->lang->line('cal_'.$val); } return $days; } // -------------------------------------------------------------------- /** * Adjust Date * * This function makes sure that we have a valid month/year. * For example, if you submit 13 as the month, the year will * increment and the month will become January. * * @access public * @param integer the month * @param integer the year * @return array */ function adjust_date($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 $date; } // -------------------------------------------------------------------- /** * Total days in a given month * * @access public * @param integer the month * @param integer the year * @return integer */ function get_total_days($month, $year) { $days_in_month = array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31); if ($month < 1 OR $month > 12) { return 0; } // Is the year a leap year? if ($month == 2) { if ($year % 400 == 0 OR ($year % 4 == 0 AND $year % 100 != 0)) { return 29; } } return $days_in_month[$month - 1]; } // -------------------------------------------------------------------- /** * Set Default Template Data * * This is used in the event that the user has not created their own template * * @access public * @return array */ function default_template() { return array ( 'table_open' => '', '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_end_today' => '', 'cal_row_end' => '', 'table_close' => '
<<{heading}>>
{week_day}
', 'cal_cell_start_today' => '', 'cal_cell_content' => '{day}', 'cal_cell_content_today' => '{day}', 'cal_cell_no_content' => '{day}', 'cal_cell_no_content_today' => '{day}', 'cal_cell_blank' => ' ', 'cal_cell_end' => '
' ); } // -------------------------------------------------------------------- /** * Parse Template * * Harvests the data within the template {pseudo-variables} * used to display the calendar * * @access public * @return void */ function parse_template() { $this->temp = $this->default_template(); if ($this->template == '') { return; } $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') as $val) { if (preg_match("/\{".$val."\}(.*?)\{\/".$val."\}/si", $this->template, $match)) { $this->temp[$val] = $match['1']; } else { if (in_array($val, $today, TRUE)) { $this->temp[$val] = $this->temp[str_replace('_today', '', $val)]; } } } } } // END CI_Calendar class ?>