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www/php/phpBB3/includes/template.php
 
1
<?php
 
2
/**
 
3
*
 
4
* @package phpBB3
 
5
* @version $Id: template.php,v 1.116 2007/10/04 12:02:03 acydburn Exp $
 
6
* @copyright (c) 2005 phpBB Group, sections (c) 2001 ispi of Lincoln Inc
 
7
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
 
8
*
 
9
*/
 
10
 
 
11
/**
 
12
* @ignore
 
13
*/
 
14
if (!defined('IN_PHPBB'))
 
15
{
 
16
        exit;
 
17
}
 
18
 
 
19
/**
 
20
* Base Template class.
 
21
* @package phpBB3
 
22
*/
 
23
class template
 
24
{
 
25
        /** variable that holds all the data we'll be substituting into
 
26
        * the compiled templates. Takes form:
 
27
        * --> $this->_tpldata[block][iteration#][child][iteration#][child2][iteration#][variablename] == value
 
28
        * if it's a root-level variable, it'll be like this:
 
29
        * --> $this->_tpldata[.][0][varname] == value
 
30
        */
 
31
        var $_tpldata = array('.' => array(0 => array()));
 
32
        var $_rootref;
 
33
 
 
34
        // Root dir and hash of filenames for each template handle.
 
35
        var $root = '';
 
36
        var $cachepath = '';
 
37
        var $files = array();
 
38
        var $filename = array();
 
39
 
 
40
        // this will hash handle names to the compiled/uncompiled code for that handle.
 
41
        var $compiled_code = array();
 
42
 
 
43
        /**
 
44
        * Set template location
 
45
        * @access public
 
46
        */
 
47
        function set_template()
 
48
        {
 
49
                global $phpbb_root_path, $user;
 
50
 
 
51
                if (file_exists($phpbb_root_path . 'styles/' . $user->theme['template_path'] . '/template'))
 
52
                {
 
53
                        $this->root = $phpbb_root_path . 'styles/' . $user->theme['template_path'] . '/template';
 
54
                        $this->cachepath = $phpbb_root_path . 'cache/tpl_' . $user->theme['template_path'] . '_';
 
55
                }
 
56
                else
 
57
                {
 
58
                        trigger_error('Template path could not be found: styles/' . $user->theme['template_path'] . '/template', E_USER_ERROR);
 
59
                }
 
60
 
 
61
                $this->_rootref = &$this->_tpldata['.'][0];
 
62
 
 
63
                return true;
 
64
        }
 
65
 
 
66
        /**
 
67
        * Set custom template location (able to use directory outside of phpBB)
 
68
        * @access public
 
69
        */
 
70
        function set_custom_template($template_path, $template_name)
 
71
        {
 
72
                global $phpbb_root_path;
 
73
 
 
74
                $this->root = $template_path;
 
75
                $this->cachepath = $phpbb_root_path . 'cache/ctpl_' . $template_name . '_';
 
76
 
 
77
                return true;
 
78
        }
 
79
 
 
80
        /**
 
81
        * Sets the template filenames for handles. $filename_array
 
82
        * should be a hash of handle => filename pairs.
 
83
        * @access public
 
84
        */
 
85
        function set_filenames($filename_array)
 
86
        {
 
87
                if (!is_array($filename_array))
 
88
                {
 
89
                        return false;
 
90
                }
 
91
 
 
92
                foreach ($filename_array as $handle => $filename)
 
93
                {
 
94
                        if (empty($filename))
 
95
                        {
 
96
                                trigger_error("template->set_filenames: Empty filename specified for $handle", E_USER_ERROR);
 
97
                        }
 
98
 
 
99
                        $this->filename[$handle] = $filename;
 
100
                        $this->files[$handle] = $this->root . '/' . $filename;
 
101
                }
 
102
 
 
103
                return true;
 
104
        }
 
105
 
 
106
        /**
 
107
        * Destroy template data set
 
108
        * @access public
 
109
        */
 
110
        function destroy()
 
111
        {
 
112
                $this->_tpldata = array('.' => array(0 => array()));
 
113
        }
 
114
 
 
115
        /**
 
116
        * Reset/empty complete block
 
117
        * @access public
 
118
        */
 
119
        function destroy_block_vars($blockname)
 
120
        {
 
121
                if (strpos($blockname, '.') !== false)
 
122
                {
 
123
                        // Nested block.
 
124
                        $blocks = explode('.', $blockname);
 
125
                        $blockcount = sizeof($blocks) - 1;
 
126
 
 
127
                        $str = &$this->_tpldata;
 
128
                        for ($i = 0; $i < $blockcount; $i++)
 
129
                        {
 
130
                                $str = &$str[$blocks[$i]];
 
131
                                $str = &$str[sizeof($str) - 1];
 
132
                        }
 
133
 
 
134
                        unset($str[$blocks[$blockcount]]);
 
135
                }
 
136
                else
 
137
                {
 
138
                        // Top-level block.
 
139
                        unset($this->_tpldata[$blockname]);
 
140
                }
 
141
 
 
142
                return true;
 
143
        }
 
144
 
 
145
        /**
 
146
        * Display handle
 
147
        * @access public
 
148
        */
 
149
        function display($handle, $include_once = true)
 
150
        {
 
151
                global $user, $phpbb_hook;
 
152
 
 
153
                if (!empty($phpbb_hook) && $phpbb_hook->call_hook(array(__CLASS__, __FUNCTION__), $handle, $include_once))
 
154
                {
 
155
                        if ($phpbb_hook->hook_return(array(__CLASS__, __FUNCTION__)))
 
156
                        {
 
157
                                return $phpbb_hook->hook_return_result(array(__CLASS__, __FUNCTION__));
 
158
                        }
 
159
                }
 
160
 
 
161
                if (defined('IN_ERROR_HANDLER'))
 
162
                {
 
163
                        if ((E_NOTICE & error_reporting()) == E_NOTICE)
 
164
                        {
 
165
                                error_reporting(error_reporting() ^ E_NOTICE);
 
166
                        }
 
167
                }
 
168
 
 
169
                if ($filename = $this->_tpl_load($handle))
 
170
                {
 
171
                        ($include_once) ? include_once($filename) : include($filename);
 
172
                }
 
173
                else
 
174
                {
 
175
                        eval(' ?>' . $this->compiled_code[$handle] . '<?php ');
 
176
                }
 
177
 
 
178
                return true;
 
179
        }
 
180
 
 
181
        /**
 
182
        * Display the handle and assign the output to a template variable or return the compiled result.
 
183
        * @access public
 
184
        */
 
185
        function assign_display($handle, $template_var = '', $return_content = true, $include_once = false)
 
186
        {
 
187
                ob_start();
 
188
                $this->display($handle, $include_once);
 
189
                $contents = ob_get_clean();
 
190
 
 
191
                if ($return_content)
 
192
                {
 
193
                        return $contents;
 
194
                }
 
195
 
 
196
                $this->assign_var($template_var, $contents);
 
197
 
 
198
                return true;
 
199
        }
 
200
 
 
201
        /**
 
202
        * Load a compiled template if possible, if not, recompile it
 
203
        * @access private
 
204
        */
 
205
        function _tpl_load(&$handle)
 
206
        {
 
207
                global $user, $phpEx, $config;
 
208
 
 
209
                $filename = $this->cachepath . str_replace('/', '.', $this->filename[$handle]) . '.' . $phpEx;
 
210
 
 
211
                $recompile = (($config['load_tplcompile'] && @filemtime($filename) < filemtime($this->files[$handle])) || !file_exists($filename) || @filesize($filename) === 0) ? true : false;
 
212
 
 
213
                // Recompile page if the original template is newer, otherwise load the compiled version
 
214
                if (!$recompile)
 
215
                {
 
216
                        return $filename;
 
217
                }
 
218
 
 
219
                global $db, $phpbb_root_path;
 
220
 
 
221
                if (!class_exists('template_compile'))
 
222
                {
 
223
                        include($phpbb_root_path . 'includes/functions_template.' . $phpEx);
 
224
                }
 
225
 
 
226
                $compile = new template_compile($this);
 
227
 
 
228
                // If we don't have a file assigned to this handle, die.
 
229
                if (!isset($this->files[$handle]))
 
230
                {
 
231
                        trigger_error("template->_tpl_load(): No file specified for handle $handle", E_USER_ERROR);
 
232
                }
 
233
 
 
234
                // Just compile if no user object is present (happens within the installer)
 
235
                if (!$user)
 
236
                {
 
237
                        $compile->_tpl_load_file($handle);
 
238
                        return false;
 
239
                }
 
240
 
 
241
                if (isset($user->theme['template_storedb']) && $user->theme['template_storedb'])
 
242
                {
 
243
                        $sql = 'SELECT *
 
244
                                FROM ' . STYLES_TEMPLATE_DATA_TABLE . '
 
245
                                WHERE template_id = ' . $user->theme['template_id'] . "
 
246
                                        AND (template_filename = '" . $db->sql_escape($this->filename[$handle]) . "'
 
247
                                                OR template_included " . $db->sql_like_expression($db->any_char . $this->filename[$handle] . ':' . $db->any_char) . ')';
 
248
                        $result = $db->sql_query($sql);
 
249
                        $row = $db->sql_fetchrow($result);
 
250
 
 
251
                        if ($row)
 
252
                        {
 
253
                                do
 
254
                                {
 
255
                                        if ($row['template_mtime'] < filemtime($phpbb_root_path . 'styles/' . $user->theme['template_path'] . '/template/' . $row['template_filename']))
 
256
                                        {
 
257
                                                if ($row['template_filename'] == $this->filename[$handle])
 
258
                                                {
 
259
                                                        $compile->_tpl_load_file($handle);
 
260
                                                }
 
261
                                                else
 
262
                                                {
 
263
                                                        $this->files[$row['template_filename']] = $this->root . '/' . $row['template_filename'];
 
264
                                                        $compile->_tpl_load_file($row['template_filename']);
 
265
                                                        unset($this->compiled_code[$row['template_filename']]);
 
266
                                                        unset($this->files[$row['template_filename']]);
 
267
                                                        unset($this->filename[$row['template_filename']]);
 
268
                                                }
 
269
                                        }
 
270
 
 
271
                                        if ($row['template_filename'] == $this->filename[$handle])
 
272
                                        {
 
273
                                                $this->compiled_code[$handle] = $compile->compile(trim($row['template_data']));
 
274
                                                $compile->compile_write($handle, $this->compiled_code[$handle]);
 
275
                                        }
 
276
                                        else
 
277
                                        {
 
278
                                                // Only bother compiling if it doesn't already exist
 
279
                                                if (!file_exists($this->cachepath . str_replace('/', '.', $row['template_filename']) . '.' . $phpEx))
 
280
                                                {
 
281
                                                        $this->filename[$row['template_filename']] = $row['template_filename'];
 
282
                                                        $compile->compile_write($row['template_filename'], $compile->compile(trim($row['template_data'])));
 
283
                                                        unset($this->filename[$row['template_filename']]);
 
284
                                                }
 
285
                                        }
 
286
                                }
 
287
                                while ($row = $db->sql_fetchrow($result));
 
288
                        }
 
289
                        else
 
290
                        {
 
291
                                // Try to load from filesystem and instruct to insert into the styles table...
 
292
                                $compile->_tpl_load_file($handle, true);
 
293
                                return false;
 
294
                        }
 
295
                        $db->sql_freeresult($result);
 
296
 
 
297
                        return false;
 
298
                }
 
299
 
 
300
                $compile->_tpl_load_file($handle);
 
301
                return false;
 
302
        }
 
303
 
 
304
        /**
 
305
        * Assign key variable pairs from an array
 
306
        * @access public
 
307
        */
 
308
        function assign_vars($vararray)
 
309
        {
 
310
                foreach ($vararray as $key => $val)
 
311
                {
 
312
                        $this->_rootref[$key] = $val;
 
313
                }
 
314
 
 
315
                return true;
 
316
        }
 
317
 
 
318
        /**
 
319
        * Assign a single variable to a single key
 
320
        * @access public
 
321
        */
 
322
        function assign_var($varname, $varval)
 
323
        {
 
324
                $this->_rootref[$varname] = $varval;
 
325
 
 
326
                return true;
 
327
        }
 
328
 
 
329
        /**
 
330
        * Assign key variable pairs from an array to a specified block
 
331
        * @access public
 
332
        */
 
333
        function assign_block_vars($blockname, $vararray)
 
334
        {
 
335
                if (strpos($blockname, '.') !== false)
 
336
                {
 
337
                        // Nested block.
 
338
                        $blocks = explode('.', $blockname);
 
339
                        $blockcount = sizeof($blocks) - 1;
 
340
 
 
341
                        $str = &$this->_tpldata;
 
342
                        for ($i = 0; $i < $blockcount; $i++)
 
343
                        {
 
344
                                $str = &$str[$blocks[$i]];
 
345
                                $str = &$str[sizeof($str) - 1];
 
346
                        }
 
347
 
 
348
                        $s_row_count = isset($str[$blocks[$blockcount]]) ? sizeof($str[$blocks[$blockcount]]) : 0;
 
349
                        $vararray['S_ROW_COUNT'] = $s_row_count;
 
350
 
 
351
                        // Assign S_FIRST_ROW
 
352
                        if (!$s_row_count)
 
353
                        {
 
354
                                $vararray['S_FIRST_ROW'] = true;
 
355
                        }
 
356
 
 
357
                        // Now the tricky part, we always assign S_LAST_ROW and remove the entry before
 
358
                        // This is much more clever than going through the complete template data on display (phew)
 
359
                        $vararray['S_LAST_ROW'] = true;
 
360
                        if ($s_row_count > 0)
 
361
                        {
 
362
                                unset($str[$blocks[$blockcount]][($s_row_count - 1)]['S_LAST_ROW']);
 
363
                        }
 
364
 
 
365
                        // Now we add the block that we're actually assigning to.
 
366
                        // We're adding a new iteration to this block with the given
 
367
                        // variable assignments.
 
368
                        $str[$blocks[$blockcount]][] = $vararray;
 
369
                }
 
370
                else
 
371
                {
 
372
                        // Top-level block.
 
373
                        $s_row_count = (isset($this->_tpldata[$blockname])) ? sizeof($this->_tpldata[$blockname]) : 0;
 
374
                        $vararray['S_ROW_COUNT'] = $s_row_count;
 
375
 
 
376
                        // Assign S_FIRST_ROW
 
377
                        if (!$s_row_count)
 
378
                        {
 
379
                                $vararray['S_FIRST_ROW'] = true;
 
380
                        }
 
381
 
 
382
                        // We always assign S_LAST_ROW and remove the entry before
 
383
                        $vararray['S_LAST_ROW'] = true;
 
384
                        if ($s_row_count > 0)
 
385
                        {
 
386
                                unset($this->_tpldata[$blockname][($s_row_count - 1)]['S_LAST_ROW']);
 
387
                        }
 
388
                        
 
389
                        // Add a new iteration to this block with the variable assignments we were given.
 
390
                        $this->_tpldata[$blockname][] = $vararray;
 
391
                }
 
392
 
 
393
                return true;
 
394
        }
 
395
 
 
396
        /**
 
397
        * Change already assigned key variable pair (one-dimensional - single loop entry)
 
398
        *
 
399
        * An example of how to use this function:
 
400
        * {@example alter_block_array.php}
 
401
        *
 
402
        * @param        string  $blockname      the blockname, for example 'loop'
 
403
        * @param        array   $vararray       the var array to insert/add or merge
 
404
        * @param        mixed   $key            Key to search for
 
405
        *
 
406
        * array: KEY => VALUE [the key/value pair to search for within the loop to determine the correct position]
 
407
        *
 
408
        * int: Position [the position to change or insert at directly given]
 
409
        *
 
410
        * If key is false the position is set to 0
 
411
        * If key is true the position is set to the last entry
 
412
        *
 
413
        * @param        string  $mode           Mode to execute (valid modes are 'insert' and 'change')
 
414
        *
 
415
        *       If insert, the vararray is inserted at the given position (position counting from zero).
 
416
        *       If change, the current block gets merged with the vararray (resulting in new key/value pairs be added and existing keys be replaced by the new value).
 
417
        *
 
418
        * Since counting begins by zero, inserting at the last position will result in this array: array(vararray, last positioned array)
 
419
        * and inserting at position 1 will result in this array: array(first positioned array, vararray, following vars)
 
420
        *
 
421
        * @return bool false on error, true on success
 
422
        * @access public
 
423
        */
 
424
        function alter_block_array($blockname, $vararray, $key = false, $mode = 'insert')
 
425
        {
 
426
                if (strpos($blockname, '.') !== false)
 
427
                {
 
428
                        // Nested blocks are not supported
 
429
                        return false;
 
430
                }
 
431
                
 
432
                // Change key to zero (change first position) if false and to last position if true
 
433
                if ($key === false || $key === true)
 
434
                {
 
435
                        $key = ($key === false) ? 0 : sizeof($this->_tpldata[$blockname]);
 
436
                }
 
437
 
 
438
                // Get correct position if array given
 
439
                if (is_array($key))
 
440
                {
 
441
                        // Search array to get correct position
 
442
                        list($search_key, $search_value) = @each($key);
 
443
 
 
444
                        $key = NULL;
 
445
                        foreach ($this->_tpldata[$blockname] as $i => $val_ary)
 
446
                        {
 
447
                                if ($val_ary[$search_key] === $search_value)
 
448
                                {
 
449
                                        $key = $i;
 
450
                                        break;
 
451
                                }
 
452
                        }
 
453
 
 
454
                        // key/value pair not found
 
455
                        if ($key === NULL)
 
456
                        {
 
457
                                return false;
 
458
                        }
 
459
                }
 
460
 
 
461
                // Insert Block
 
462
                if ($mode == 'insert')
 
463
                {
 
464
                        // Make sure we are not exceeding the last iteration
 
465
                        if ($key >= sizeof($this->_tpldata[$blockname]))
 
466
                        {
 
467
                                $key = sizeof($this->_tpldata[$blockname]);
 
468
                                unset($this->_tpldata[$blockname][($key - 1)]['S_LAST_ROW']);
 
469
                                $vararray['S_LAST_ROW'] = true;
 
470
                        }
 
471
                        else if ($key === 0)
 
472
                        {
 
473
                                unset($this->_tpldata[$blockname][0]['S_FIRST_ROW']);
 
474
                                $vararray['S_FIRST_ROW'] = true;
 
475
                        }
 
476
 
 
477
                        // Re-position template blocks
 
478
                        for ($i = sizeof($this->_tpldata[$blockname]); $i > $key; $i--)
 
479
                        {
 
480
                                $this->_tpldata[$blockname][$i] = $this->_tpldata[$blockname][$i-1];
 
481
                                $this->_tpldata[$blockname][$i]['S_ROW_COUNT'] = $i;
 
482
                        }
 
483
 
 
484
                        // Insert vararray at given position
 
485
                        $vararray['S_ROW_COUNT'] = $key;
 
486
                        $this->_tpldata[$blockname][$key] = $vararray;
 
487
 
 
488
                        return true;
 
489
                }
 
490
 
 
491
                // Which block to change?
 
492
                if ($mode == 'change')
 
493
                {
 
494
                        if ($key == sizeof($this->_tpldata[$blockname]))
 
495
                        {
 
496
                                $key--;
 
497
                        }
 
498
 
 
499
                        $this->_tpldata[$blockname][$key] = array_merge($this->_tpldata[$blockname][$key], $vararray);
 
500
                        return true;
 
501
                }
 
502
 
 
503
                return false;
 
504
        }
 
505
 
 
506
        /**
 
507
        * Include a separate template
 
508
        * @access private
 
509
        */
 
510
        function _tpl_include($filename, $include = true)
 
511
        {
 
512
                $handle = $filename;
 
513
                $this->filename[$handle] = $filename;
 
514
                $this->files[$handle] = $this->root . '/' . $filename;
 
515
 
 
516
                $filename = $this->_tpl_load($handle);
 
517
 
 
518
                if ($include)
 
519
                {
 
520
                        global $user;
 
521
 
 
522
                        if ($filename)
 
523
                        {
 
524
                                include($filename);
 
525
                                return;
 
526
                        }
 
527
                        eval(' ?>' . $this->compiled_code[$handle] . '<?php ');
 
528
                }
 
529
        }
 
530
}
 
531
 
 
532
?>
 
 
b'\\ No newline at end of file'