/halogy/libraries/Calendar.php
PHP | 477 lines | 200 code | 58 blank | 219 comment | 42 complexity | f88ae1e49639db9e2da4ce9d3d937d0d MD5 | raw file
1<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); 2/** 3 * CodeIgniter 4 * 5 * An open source application development framework for PHP 4.3.2 or newer 6 * 7 * @package CodeIgniter 8 * @author ExpressionEngine Dev Team 9 * @copyright Copyright (c) 2008 - 2009, EllisLab, Inc. 10 * @license http://codeigniter.com/user_guide/license.html 11 * @link http://codeigniter.com 12 * @since Version 1.0 13 * @filesource 14 */ 15 16// ------------------------------------------------------------------------ 17 18/** 19 * CodeIgniter Calendar Class 20 * 21 * This class enables the creation of calendars 22 * 23 * @package CodeIgniter 24 * @subpackage Libraries 25 * @category Libraries 26 * @author ExpressionEngine Dev Team 27 * @link http://codeigniter.com/user_guide/libraries/calendar.html 28 */ 29class CI_Calendar { 30 31 var $CI; 32 var $lang; 33 var $local_time; 34 var $template = ''; 35 var $start_day = 'sunday'; 36 var $month_type = 'long'; 37 var $day_type = 'abr'; 38 var $show_next_prev = FALSE; 39 var $next_prev_url = ''; 40 41 /** 42 * Constructor 43 * 44 * Loads the calendar language file and sets the default time reference 45 * 46 * @access public 47 */ 48 function CI_Calendar($config = array()) 49 { 50 $this->CI =& get_instance(); 51 52 if ( ! in_array('calendar_lang'.EXT, $this->CI->lang->is_loaded, TRUE)) 53 { 54 $this->CI->lang->load('calendar'); 55 } 56 57 $this->local_time = time(); 58 59 if (count($config) > 0) 60 { 61 $this->initialize($config); 62 } 63 64 log_message('debug', "Calendar Class Initialized"); 65 } 66 67 // -------------------------------------------------------------------- 68 69 /** 70 * Initialize the user preferences 71 * 72 * Accepts an associative array as input, containing display preferences 73 * 74 * @access public 75 * @param array config preferences 76 * @return void 77 */ 78 function initialize($config = array()) 79 { 80 foreach ($config as $key => $val) 81 { 82 if (isset($this->$key)) 83 { 84 $this->$key = $val; 85 } 86 } 87 } 88 89 // -------------------------------------------------------------------- 90 91 /** 92 * Generate the calendar 93 * 94 * @access public 95 * @param integer the year 96 * @param integer the month 97 * @param array the data to be shown in the calendar cells 98 * @return string 99 */ 100 function generate($year = '', $month = '', $data = array()) 101 { 102 // Set and validate the supplied month/year 103 if ($year == '') 104 $year = date("Y", $this->local_time); 105 106 if ($month == '') 107 $month = date("m", $this->local_time); 108 109 if (strlen($year) == 1) 110 $year = '200'.$year; 111 112 if (strlen($year) == 2) 113 $year = '20'.$year; 114 115 if (strlen($month) == 1) 116 $month = '0'.$month; 117 118 $adjusted_date = $this->adjust_date($month, $year); 119 120 $month = $adjusted_date['month']; 121 $year = $adjusted_date['year']; 122 123 // Determine the total days in the month 124 $total_days = $this->get_total_days($month, $year); 125 126 // Set the starting day of the week 127 $start_days = array('sunday' => 0, 'monday' => 1, 'tuesday' => 2, 'wednesday' => 3, 'thursday' => 4, 'friday' => 5, 'saturday' => 6); 128 $start_day = ( ! isset($start_days[$this->start_day])) ? 0 : $start_days[$this->start_day]; 129 130 // Set the starting day number 131 $local_date = mktime(12, 0, 0, $month, 1, $year); 132 $date = getdate($local_date); 133 $day = $start_day + 1 - $date["wday"]; 134 135 while ($day > 1) 136 { 137 $day -= 7; 138 } 139 140 // Set the current month/year/day 141 // We use this to determine the "today" date 142 $cur_year = date("Y", $this->local_time); 143 $cur_month = date("m", $this->local_time); 144 $cur_day = date("j", $this->local_time); 145 146 $is_current_month = ($cur_year == $year AND $cur_month == $month) ? TRUE : FALSE; 147 148 // Generate the template data array 149 $this->parse_template(); 150 151 // Begin building the calendar output 152 $out = $this->temp['table_open']; 153 $out .= "\n"; 154 155 $out .= "\n"; 156 $out .= $this->temp['heading_row_start']; 157 $out .= "\n"; 158 159 // "previous" month link 160 if ($this->show_next_prev == TRUE) 161 { 162 // Add a trailing slash to the URL if needed 163 $this->next_prev_url = preg_replace("/(.+?)\/*$/", "\\1/", $this->next_prev_url); 164 165 $adjusted_date = $this->adjust_date($month - 1, $year); 166 $out .= str_replace('{previous_url}', $this->next_prev_url.$adjusted_date['year'].'/'.$adjusted_date['month'], $this->temp['heading_previous_cell']); 167 $out .= "\n"; 168 } 169 170 // Heading containing the month/year 171 $colspan = ($this->show_next_prev == TRUE) ? 5 : 7; 172 173 $this->temp['heading_title_cell'] = str_replace('{colspan}', $colspan, $this->temp['heading_title_cell']); 174 $this->temp['heading_title_cell'] = str_replace('{heading}', $this->get_month_name($month)." ".$year, $this->temp['heading_title_cell']); 175 176 $out .= $this->temp['heading_title_cell']; 177 $out .= "\n"; 178 179 // "next" month link 180 if ($this->show_next_prev == TRUE) 181 { 182 $adjusted_date = $this->adjust_date($month + 1, $year); 183 $out .= str_replace('{next_url}', $this->next_prev_url.$adjusted_date['year'].'/'.$adjusted_date['month'], $this->temp['heading_next_cell']); 184 } 185 186 $out .= "\n"; 187 $out .= $this->temp['heading_row_end']; 188 $out .= "\n"; 189 190 // Write the cells containing the days of the week 191 $out .= "\n"; 192 $out .= $this->temp['week_row_start']; 193 $out .= "\n"; 194 195 $day_names = $this->get_day_names(); 196 197 for ($i = 0; $i < 7; $i ++) 198 { 199 $out .= str_replace('{week_day}', $day_names[($start_day + $i) %7], $this->temp['week_day_cell']); 200 } 201 202 $out .= "\n"; 203 $out .= $this->temp['week_row_end']; 204 $out .= "\n"; 205 206 // Build the main body of the calendar 207 while ($day <= $total_days) 208 { 209 $out .= "\n"; 210 $out .= $this->temp['cal_row_start']; 211 $out .= "\n"; 212 213 for ($i = 0; $i < 7; $i++) 214 { 215 $out .= ($is_current_month == TRUE AND $day == $cur_day) ? $this->temp['cal_cell_start_today'] : $this->temp['cal_cell_start']; 216 217 if ($day > 0 AND $day <= $total_days) 218 { 219 if (isset($data[$day])) 220 { 221 // Cells with content 222 $temp = ($is_current_month == TRUE AND $day == $cur_day) ? $this->temp['cal_cell_content_today'] : $this->temp['cal_cell_content']; 223 $out .= str_replace('{day}', $day, str_replace('{content}', $data[$day], $temp)); 224 } 225 else 226 { 227 // Cells with no content 228 $temp = ($is_current_month == TRUE AND $day == $cur_day) ? $this->temp['cal_cell_no_content_today'] : $this->temp['cal_cell_no_content']; 229 $out .= str_replace('{day}', $day, $temp); 230 } 231 } 232 else 233 { 234 // Blank cells 235 $out .= $this->temp['cal_cell_blank']; 236 } 237 238 $out .= ($is_current_month == TRUE AND $day == $cur_day) ? $this->temp['cal_cell_end_today'] : $this->temp['cal_cell_end']; 239 $day++; 240 } 241 242 $out .= "\n"; 243 $out .= $this->temp['cal_row_end']; 244 $out .= "\n"; 245 } 246 247 $out .= "\n"; 248 $out .= $this->temp['table_close']; 249 250 return $out; 251 } 252 253 // -------------------------------------------------------------------- 254 255 /** 256 * Get Month Name 257 * 258 * Generates a textual month name based on the numeric 259 * month provided. 260 * 261 * @access public 262 * @param integer the month 263 * @return string 264 */ 265 function get_month_name($month) 266 { 267 if ($this->month_type == 'short') 268 { 269 $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'); 270 } 271 else 272 { 273 $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'); 274 } 275 276 $month = $month_names[$month]; 277 278 if ($this->CI->lang->line($month) === FALSE) 279 { 280 return ucfirst(str_replace('cal_', '', $month)); 281 } 282 283 return $this->CI->lang->line($month); 284 } 285 286 // -------------------------------------------------------------------- 287 288 /** 289 * Get Day Names 290 * 291 * Returns an array of day names (Sunday, Monday, etc.) based 292 * on the type. Options: long, short, abrev 293 * 294 * @access public 295 * @param string 296 * @return array 297 */ 298 function get_day_names($day_type = '') 299 { 300 if ($day_type != '') 301 $this->day_type = $day_type; 302 303 if ($this->day_type == 'long') 304 { 305 $day_names = array('sunday', 'monday', 'tuesday', 'wednesday', 'thursday', 'friday', 'saturday'); 306 } 307 elseif ($this->day_type == 'short') 308 { 309 $day_names = array('sun', 'mon', 'tue', 'wed', 'thu', 'fri', 'sat'); 310 } 311 else 312 { 313 $day_names = array('su', 'mo', 'tu', 'we', 'th', 'fr', 'sa'); 314 } 315 316 $days = array(); 317 foreach ($day_names as $val) 318 { 319 $days[] = ($this->CI->lang->line('cal_'.$val) === FALSE) ? ucfirst($val) : $this->CI->lang->line('cal_'.$val); 320 } 321 322 return $days; 323 } 324 325 // -------------------------------------------------------------------- 326 327 /** 328 * Adjust Date 329 * 330 * This function makes sure that we have a valid month/year. 331 * For example, if you submit 13 as the month, the year will 332 * increment and the month will become January. 333 * 334 * @access public 335 * @param integer the month 336 * @param integer the year 337 * @return array 338 */ 339 function adjust_date($month, $year) 340 { 341 $date = array(); 342 343 $date['month'] = $month; 344 $date['year'] = $year; 345 346 while ($date['month'] > 12) 347 { 348 $date['month'] -= 12; 349 $date['year']++; 350 } 351 352 while ($date['month'] <= 0) 353 { 354 $date['month'] += 12; 355 $date['year']--; 356 } 357 358 if (strlen($date['month']) == 1) 359 { 360 $date['month'] = '0'.$date['month']; 361 } 362 363 return $date; 364 } 365 366 // -------------------------------------------------------------------- 367 368 /** 369 * Total days in a given month 370 * 371 * @access public 372 * @param integer the month 373 * @param integer the year 374 * @return integer 375 */ 376 function get_total_days($month, $year) 377 { 378 $days_in_month = array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31); 379 380 if ($month < 1 OR $month > 12) 381 { 382 return 0; 383 } 384 385 // Is the year a leap year? 386 if ($month == 2) 387 { 388 if ($year % 400 == 0 OR ($year % 4 == 0 AND $year % 100 != 0)) 389 { 390 return 29; 391 } 392 } 393 394 return $days_in_month[$month - 1]; 395 } 396 397 // -------------------------------------------------------------------- 398 399 /** 400 * Set Default Template Data 401 * 402 * This is used in the event that the user has not created their own template 403 * 404 * @access public 405 * @return array 406 */ 407 function default_template() 408 { 409 return array ( 410 'table_open' => '<table border="0" cellpadding="4" cellspacing="0">', 411 'heading_row_start' => '<tr>', 412 'heading_previous_cell' => '<th><a href="{previous_url}"><<</a></th>', 413 'heading_title_cell' => '<th colspan="{colspan}">{heading}</th>', 414 'heading_next_cell' => '<th><a href="{next_url}">>></a></th>', 415 'heading_row_end' => '</tr>', 416 'week_row_start' => '<tr>', 417 'week_day_cell' => '<td>{week_day}</td>', 418 'week_row_end' => '</tr>', 419 'cal_row_start' => '<tr>', 420 'cal_cell_start' => '<td>', 421 'cal_cell_start_today' => '<td>', 422 'cal_cell_content' => '<a href="{content}">{day}</a>', 423 'cal_cell_content_today' => '<a href="{content}"><strong>{day}</strong></a>', 424 'cal_cell_no_content' => '{day}', 425 'cal_cell_no_content_today' => '<strong>{day}</strong>', 426 'cal_cell_blank' => ' ', 427 'cal_cell_end' => '</td>', 428 'cal_cell_end_today' => '</td>', 429 'cal_row_end' => '</tr>', 430 'table_close' => '</table>' 431 ); 432 } 433 434 // -------------------------------------------------------------------- 435 436 /** 437 * Parse Template 438 * 439 * Harvests the data within the template {pseudo-variables} 440 * used to display the calendar 441 * 442 * @access public 443 * @return void 444 */ 445 function parse_template() 446 { 447 $this->temp = $this->default_template(); 448 449 if ($this->template == '') 450 { 451 return; 452 } 453 454 $today = array('cal_cell_start_today', 'cal_cell_content_today', 'cal_cell_no_content_today', 'cal_cell_end_today'); 455 456 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 $val) 457 { 458 if (preg_match("/\{".$val."\}(.*?)\{\/".$val."\}/si", $this->template, $match)) 459 { 460 $this->temp[$val] = $match['1']; 461 } 462 else 463 { 464 if (in_array($val, $today, TRUE)) 465 { 466 $this->temp[$val] = $this->temp[str_replace('_today', '', $val)]; 467 } 468 } 469 } 470 } 471 472} 473 474// END CI_Calendar class 475 476/* End of file Calendar.php */ 477/* Location: ./system/libraries/Calendar.php */