]> jfr.im git - z_archive/KronOS.git/blob - system/libraries/Calendar.php
Fixing filestructure again
[z_archive/KronOS.git] / system / libraries / Calendar.php
1 <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
2 /**
3 * CodeIgniter
4 *
5 * An open source application development framework for PHP 5.1.6 or newer
6 *
7 * @package CodeIgniter
8 * @author ExpressionEngine Dev Team
9 * @copyright Copyright (c) 2008 - 2011, 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 */
29 class 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 $next_prev_url = '';
40
41 /**
42 * Constructor
43 *
44 * Loads the calendar language file and sets the default time reference
45 */
46 public function __construct($config = array())
47 {
48 $this->CI =& get_instance();
49
50 if ( ! in_array('calendar_lang.php', $this->CI->lang->is_loaded, TRUE))
51 {
52 $this->CI->lang->load('calendar');
53 }
54
55 $this->local_time = time();
56
57 if (count($config) > 0)
58 {
59 $this->initialize($config);
60 }
61
62 log_message('debug', "Calendar Class Initialized");
63 }
64
65 // --------------------------------------------------------------------
66
67 /**
68 * Initialize the user preferences
69 *
70 * Accepts an associative array as input, containing display preferences
71 *
72 * @access public
73 * @param array config preferences
74 * @return void
75 */
76 function initialize($config = array())
77 {
78 foreach ($config as $key => $val)
79 {
80 if (isset($this->$key))
81 {
82 $this->$key = $val;
83 }
84 }
85 }
86
87 // --------------------------------------------------------------------
88
89 /**
90 * Generate the calendar
91 *
92 * @access public
93 * @param integer the year
94 * @param integer the month
95 * @param array the data to be shown in the calendar cells
96 * @return string
97 */
98 function generate($year = '', $month = '', $data = array())
99 {
100 // Set and validate the supplied month/year
101 if ($year == '')
102 $year = date("Y", $this->local_time);
103
104 if ($month == '')
105 $month = date("m", $this->local_time);
106
107 if (strlen($year) == 1)
108 $year = '200'.$year;
109
110 if (strlen($year) == 2)
111 $year = '20'.$year;
112
113 if (strlen($month) == 1)
114 $month = '0'.$month;
115
116 $adjusted_date = $this->adjust_date($month, $year);
117
118 $month = $adjusted_date['month'];
119 $year = $adjusted_date['year'];
120
121 // Determine the total days in the month
122 $total_days = $this->get_total_days($month, $year);
123
124 // Set the starting day of the week
125 $start_days = array('sunday' => 0, 'monday' => 1, 'tuesday' => 2, 'wednesday' => 3, 'thursday' => 4, 'friday' => 5, 'saturday' => 6);
126 $start_day = ( ! isset($start_days[$this->start_day])) ? 0 : $start_days[$this->start_day];
127
128 // Set the starting day number
129 $local_date = mktime(12, 0, 0, $month, 1, $year);
130 $date = getdate($local_date);
131 $day = $start_day + 1 - $date["wday"];
132
133 while ($day > 1)
134 {
135 $day -= 7;
136 }
137
138 // Set the current month/year/day
139 // We use this to determine the "today" date
140 $cur_year = date("Y", $this->local_time);
141 $cur_month = date("m", $this->local_time);
142 $cur_day = date("j", $this->local_time);
143
144 $is_current_month = ($cur_year == $year AND $cur_month == $month) ? TRUE : FALSE;
145
146 // Generate the template data array
147 $this->parse_template();
148
149 // Begin building the calendar output
150 $out = $this->temp['table_open'];
151 $out .= "\n";
152
153 $out .= "\n";
154 $out .= $this->temp['heading_row_start'];
155 $out .= "\n";
156
157 // "previous" month link
158 if ($this->show_next_prev == TRUE)
159 {
160 // Add a trailing slash to the URL if needed
161 $this->next_prev_url = preg_replace("/(.+?)\/*$/", "\\1/", $this->next_prev_url);
162
163 $adjusted_date = $this->adjust_date($month - 1, $year);
164 $out .= str_replace('{previous_url}', $this->next_prev_url.$adjusted_date['year'].'/'.$adjusted_date['month'], $this->temp['heading_previous_cell']);
165 $out .= "\n";
166 }
167
168 // Heading containing the month/year
169 $colspan = ($this->show_next_prev == TRUE) ? 5 : 7;
170
171 $this->temp['heading_title_cell'] = str_replace('{colspan}', $colspan, $this->temp['heading_title_cell']);
172 $this->temp['heading_title_cell'] = str_replace('{heading}', $this->get_month_name($month)."&nbsp;".$year, $this->temp['heading_title_cell']);
173
174 $out .= $this->temp['heading_title_cell'];
175 $out .= "\n";
176
177 // "next" month link
178 if ($this->show_next_prev == TRUE)
179 {
180 $adjusted_date = $this->adjust_date($month + 1, $year);
181 $out .= str_replace('{next_url}', $this->next_prev_url.$adjusted_date['year'].'/'.$adjusted_date['month'], $this->temp['heading_next_cell']);
182 }
183
184 $out .= "\n";
185 $out .= $this->temp['heading_row_end'];
186 $out .= "\n";
187
188 // Write the cells containing the days of the week
189 $out .= "\n";
190 $out .= $this->temp['week_row_start'];
191 $out .= "\n";
192
193 $day_names = $this->get_day_names();
194
195 for ($i = 0; $i < 7; $i ++)
196 {
197 $out .= str_replace('{week_day}', $day_names[($start_day + $i) %7], $this->temp['week_day_cell']);
198 }
199
200 $out .= "\n";
201 $out .= $this->temp['week_row_end'];
202 $out .= "\n";
203
204 // Build the main body of the calendar
205 while ($day <= $total_days)
206 {
207 $out .= "\n";
208 $out .= $this->temp['cal_row_start'];
209 $out .= "\n";
210
211 for ($i = 0; $i < 7; $i++)
212 {
213 $out .= ($is_current_month == TRUE AND $day == $cur_day) ? $this->temp['cal_cell_start_today'] : $this->temp['cal_cell_start'];
214
215 if ($day > 0 AND $day <= $total_days)
216 {
217 if (isset($data[$day]))
218 {
219 // Cells with content
220 $temp = ($is_current_month == TRUE AND $day == $cur_day) ? $this->temp['cal_cell_content_today'] : $this->temp['cal_cell_content'];
221 $out .= str_replace('{day}', $day, str_replace('{content}', $data[$day], $temp));
222 }
223 else
224 {
225 // Cells with no content
226 $temp = ($is_current_month == TRUE AND $day == $cur_day) ? $this->temp['cal_cell_no_content_today'] : $this->temp['cal_cell_no_content'];
227 $out .= str_replace('{day}', $day, $temp);
228 }
229 }
230 else
231 {
232 // Blank cells
233 $out .= $this->temp['cal_cell_blank'];
234 }
235
236 $out .= ($is_current_month == TRUE AND $day == $cur_day) ? $this->temp['cal_cell_end_today'] : $this->temp['cal_cell_end'];
237 $day++;
238 }
239
240 $out .= "\n";
241 $out .= $this->temp['cal_row_end'];
242 $out .= "\n";
243 }
244
245 $out .= "\n";
246 $out .= $this->temp['table_close'];
247
248 return $out;
249 }
250
251 // --------------------------------------------------------------------
252
253 /**
254 * Get Month Name
255 *
256 * Generates a textual month name based on the numeric
257 * month provided.
258 *
259 * @access public
260 * @param integer the month
261 * @return string
262 */
263 function get_month_name($month)
264 {
265 if ($this->month_type == 'short')
266 {
267 $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');
268 }
269 else
270 {
271 $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');
272 }
273
274 $month = $month_names[$month];
275
276 if ($this->CI->lang->line($month) === FALSE)
277 {
278 return ucfirst(str_replace('cal_', '', $month));
279 }
280
281 return $this->CI->lang->line($month);
282 }
283
284 // --------------------------------------------------------------------
285
286 /**
287 * Get Day Names
288 *
289 * Returns an array of day names (Sunday, Monday, etc.) based
290 * on the type. Options: long, short, abrev
291 *
292 * @access public
293 * @param string
294 * @return array
295 */
296 function get_day_names($day_type = '')
297 {
298 if ($day_type != '')
299 $this->day_type = $day_type;
300
301 if ($this->day_type == 'long')
302 {
303 $day_names = array('sunday', 'monday', 'tuesday', 'wednesday', 'thursday', 'friday', 'saturday');
304 }
305 elseif ($this->day_type == 'short')
306 {
307 $day_names = array('sun', 'mon', 'tue', 'wed', 'thu', 'fri', 'sat');
308 }
309 else
310 {
311 $day_names = array('su', 'mo', 'tu', 'we', 'th', 'fr', 'sa');
312 }
313
314 $days = array();
315 foreach ($day_names as $val)
316 {
317 $days[] = ($this->CI->lang->line('cal_'.$val) === FALSE) ? ucfirst($val) : $this->CI->lang->line('cal_'.$val);
318 }
319
320 return $days;
321 }
322
323 // --------------------------------------------------------------------
324
325 /**
326 * Adjust Date
327 *
328 * This function makes sure that we have a valid month/year.
329 * For example, if you submit 13 as the month, the year will
330 * increment and the month will become January.
331 *
332 * @access public
333 * @param integer the month
334 * @param integer the year
335 * @return array
336 */
337 function adjust_date($month, $year)
338 {
339 $date = array();
340
341 $date['month'] = $month;
342 $date['year'] = $year;
343
344 while ($date['month'] > 12)
345 {
346 $date['month'] -= 12;
347 $date['year']++;
348 }
349
350 while ($date['month'] <= 0)
351 {
352 $date['month'] += 12;
353 $date['year']--;
354 }
355
356 if (strlen($date['month']) == 1)
357 {
358 $date['month'] = '0'.$date['month'];
359 }
360
361 return $date;
362 }
363
364 // --------------------------------------------------------------------
365
366 /**
367 * Total days in a given month
368 *
369 * @access public
370 * @param integer the month
371 * @param integer the year
372 * @return integer
373 */
374 function get_total_days($month, $year)
375 {
376 $days_in_month = array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
377
378 if ($month < 1 OR $month > 12)
379 {
380 return 0;
381 }
382
383 // Is the year a leap year?
384 if ($month == 2)
385 {
386 if ($year % 400 == 0 OR ($year % 4 == 0 AND $year % 100 != 0))
387 {
388 return 29;
389 }
390 }
391
392 return $days_in_month[$month - 1];
393 }
394
395 // --------------------------------------------------------------------
396
397 /**
398 * Set Default Template Data
399 *
400 * This is used in the event that the user has not created their own template
401 *
402 * @access public
403 * @return array
404 */
405 function default_template()
406 {
407 return array (
408 'table_open' => '<table border="0" cellpadding="4" cellspacing="0">',
409 'heading_row_start' => '<tr>',
410 'heading_previous_cell' => '<th><a href="{previous_url}">&lt;&lt;</a></th>',
411 'heading_title_cell' => '<th colspan="{colspan}">{heading}</th>',
412 'heading_next_cell' => '<th><a href="{next_url}">&gt;&gt;</a></th>',
413 'heading_row_end' => '</tr>',
414 'week_row_start' => '<tr>',
415 'week_day_cell' => '<td>{week_day}</td>',
416 'week_row_end' => '</tr>',
417 'cal_row_start' => '<tr>',
418 'cal_cell_start' => '<td>',
419 'cal_cell_start_today' => '<td>',
420 'cal_cell_content' => '<a href="{content}">{day}</a>',
421 'cal_cell_content_today' => '<a href="{content}"><strong>{day}</strong></a>',
422 'cal_cell_no_content' => '{day}',
423 'cal_cell_no_content_today' => '<strong>{day}</strong>',
424 'cal_cell_blank' => '&nbsp;',
425 'cal_cell_end' => '</td>',
426 'cal_cell_end_today' => '</td>',
427 'cal_row_end' => '</tr>',
428 'table_close' => '</table>'
429 );
430 }
431
432 // --------------------------------------------------------------------
433
434 /**
435 * Parse Template
436 *
437 * Harvests the data within the template {pseudo-variables}
438 * used to display the calendar
439 *
440 * @access public
441 * @return void
442 */
443 function parse_template()
444 {
445 $this->temp = $this->default_template();
446
447 if ($this->template == '')
448 {
449 return;
450 }
451
452 $today = array('cal_cell_start_today', 'cal_cell_content_today', 'cal_cell_no_content_today', 'cal_cell_end_today');
453
454 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 $val)
455 {
456 if (preg_match("/\{".$val."\}(.*?)\{\/".$val."\}/si", $this->template, $match))
457 {
458 $this->temp[$val] = $match['1'];
459 }
460 else
461 {
462 if (in_array($val, $today, TRUE))
463 {
464 $this->temp[$val] = $this->temp[str_replace('_today', '', $val)];
465 }
466 }
467 }
468 }
469
470 }
471
472 // END CI_Calendar class
473
474 /* End of file Calendar.php */
475 /* Location: ./system/libraries/Calendar.php */