aboutsummaryrefslogtreecommitdiffstats
path: root/include/template.class.php
blob: c31c50d2ec841080607dfe6c45119e08d9ecba49 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
<?php
// +-----------------------------------------------------------------------+
// | Piwigo - a PHP based picture gallery                                  |
// +-----------------------------------------------------------------------+
// | Copyright(C) 2008-2009 Piwigo Team                  http://piwigo.org |
// | Copyright(C) 2003-2008 PhpWebGallery Team    http://phpwebgallery.net |
// | Copyright(C) 2002-2003 Pierrick LE GALL   http://le-gall.net/pierrick |
// +-----------------------------------------------------------------------+
// | This program is free software; you can redistribute it and/or modify  |
// | it under the terms of the GNU General Public License as published by  |
// | the Free Software Foundation                                          |
// |                                                                       |
// | This program is distributed in the hope that it will be useful, but   |
// | WITHOUT ANY WARRANTY; without even the implied warranty of            |
// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU      |
// | General Public License for more details.                              |
// |                                                                       |
// | You should have received a copy of the GNU General Public License     |
// | along with this program; if not, write to the Free Software           |
// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
// | USA.                                                                  |
// +-----------------------------------------------------------------------+


require_once(PHPWG_ROOT_PATH.'include/smarty/libs/Smarty.class.php');

// migrate lang:XXX
//    sed "s/{lang:\([^}]\+\)}/{\'\1\'|@translate}/g" my_template.tpl
// migrate change root level vars {XXX}
//    sed "s/{pwg_root}/{ROOT_URL}/g" my_template.tpl
// migrate change root level vars {XXX}
//    sed "s/{\([a-zA-Z_]\+\)}/{$\1}/g" my_template.tpl
// migrate all
//    cat my_template.tpl | sed "s/{lang:\([^}]\+\)}/{\'\1\'|@translate}/g" | sed "s/{pwg_root}/{ROOT_URL}/g" | sed "s/{\([a-zA-Z_]\+\)}/{$\1}/g"


class Template {

  var $smarty;

  var $output = '';

  // Hash of filenames for each template handle.
  var $files = array();

  // Template extents filenames for each template handle.
  var $extents = array();

  // Templates prefilter from external sources (plugins)
  var $external_filters = array();
  
  // used by html_head smarty block to add content before </head>
  var $html_head_elements = array();

  function Template($root = ".", $theme= "", $path = "template")
  {
    global $conf, $lang_info;

    $this->smarty = new Smarty;
    $this->smarty->debugging = $conf['debug_template'];
    $this->smarty->compile_check=$conf['template_compile_check'];

    $compile_dir = $conf['local_data_dir'].'/templates_c';
    mkgetdir( $compile_dir );

    $this->smarty->compile_dir = $compile_dir;

    $this->smarty->assign_by_ref( 'pwg', new PwgTemplateAdapter() );
    $this->smarty->register_modifier( 'translate', array('Template', 'mod_translate') );
    $this->smarty->register_modifier( 'explode', array('Template', 'mod_explode') );
    $this->smarty->register_modifier( 'get_extent', array(&$this, 'get_extent') );
    $this->smarty->register_block('html_head', array(&$this, 'block_html_head') );
    $this->smarty->register_function('known_script', array(&$this, 'func_known_script') );
    $this->smarty->register_prefilter( array('Template', 'prefilter_white_space') );
    if ( $conf['compiled_template_cache_language'] )
    {
      $this->smarty->register_prefilter( array('Template', 'prefilter_language') );
    }

    $this->smarty->template_dir = array();
    if ( !empty($theme) )
    {
      $this->set_theme($root, $theme, $path);
    }

    $this->smarty->assign('lang_info', $lang_info);

    if (!defined('IN_ADMIN') and isset($conf['extents_for_templates']))
    {
      $tpl_extents = unserialize($conf['extents_for_templates']);
      $this->set_extents($tpl_extents, './template-extension/', true);
    }
  }

  /**
   * Load theme's parameters.
   */
  function set_theme($root, $theme, $path)
  {
    $this->set_template_dir($root.'/'.$theme.'/'.$path);

    include($root.'/'.$theme.'/themeconf.inc.php');

    if (isset($themeconf['parent']))
    {
      $this->set_theme($root, $themeconf['parent'], $path);
    }

    $tpl_var = array('name' => $themeconf['theme']);
    if (file_exists($root.'/'.$theme.'/local_head.tpl'))
    {
      $tpl_var['local_head'] = realpath($root.'/'.$theme.'/local_head.tpl');
    }
    $this->smarty->append('themes', $tpl_var);
    $this->smarty->append('themeconf', $themeconf, true);
  }

  function set_template_dir($dir)
  {
    $this->smarty->template_dir[] = $dir;

    if (!isset($this->smarty->compile_id))
    {
      $real_dir = realpath($dir);
      $compile_id = crc32( $real_dir===false ? $dir : $real_dir);
      $this->smarty->compile_id = base_convert($compile_id, 10, 36 );
    }
  }

  /**
   * Gets the template root directory for this Template object.
   */
  function get_template_dir()
  {
    return $this->smarty->template_dir;
  }

  /**
   * Deletes all compiled templates.
   */
  function delete_compiled_templates()
  {
      $save_compile_id = $this->smarty->compile_id;
      $this->smarty->compile_id = null;
      $this->smarty->clear_compiled_tpl();
      $this->smarty->compile_id = $save_compile_id;
      file_put_contents($this->smarty->compile_dir.'/index.htm', 'Not allowed!');
  }

  function get_themeconf($val)
  {
    $tc = $this->smarty->get_template_vars('themeconf');
    return isset($tc[$val]) ? $tc[$val] : '';
  }

  /**
   * Sets the template filename for handle.
   */
  function set_filename($handle, $filename)
  {
    return $this->set_filenames( array($handle=>$filename) );
  }

  /**
   * Sets the template filenames for handles. $filename_array should be a
   * hash of handle => filename pairs.
   */
  function set_filenames($filename_array)
  {
    if (!is_array($filename_array))
    {
      return false;
    }
    reset($filename_array);
    while(list($handle, $filename) = each($filename_array))
    {
      if (is_null($filename))
      {
        unset($this->files[$handle]);
      }
      else
      {
        $this->files[$handle] = $this->get_extent($filename, $handle);
      }
    }
    return true;
  }

  /**
   * Sets template extention filename for handles.
   */
  function set_extent($filename, $param, $dir='', $overwrite=true)
  {
    return $this->set_extents(array($filename => $param), $dir, $overwrite);
  }

  /**
   * Sets template extentions filenames for handles.
   * $filename_array should be an hash of filename => array( handle, param) or filename => handle
   */
  function set_extents($filename_array, $dir='', $overwrite=true)
  {
    global $user;

    if (!is_array($filename_array))
    {
      return false;
    }
    foreach ($filename_array as $filename => $value)
    {
      if (is_array($value))
      {
        $handle = $value[0];
        $param = $value[1];
        $tpl = $value[2];
      }
      elseif (is_string($value))
      {
        $handle = $value;
        $param = 'N/A';
        $tpl = 'N/A';
      }
      else
      {
        return false;
      }

      if ((stripos(implode('',array_keys($_GET)), '/'.$param) !== false or $param == 'N/A')
        and ($tpl == $user['theme'] or $tpl == 'N/A')
        and (!isset($this->extents[$handle]) or $overwrite)
        and file_exists($dir . $filename))
      {
        $this->extents[$handle] = realpath($dir . $filename);
      }
    }
    return true;
  }

  /** return template extension if exists  */
  function get_extent($filename='', $handle='')
  {
    if (isset($this->extents[$handle]))
    {
      $filename = $this->extents[$handle];
    }
    return $filename;
  }

  /** see smarty assign http://www.smarty.net/manual/en/api.assign.php */
  function assign($tpl_var, $value = null)
  {
    $this->smarty->assign( $tpl_var, $value );
  }

  /**
   * Inserts the uncompiled code for $handle as the value of $varname in the
   * root-level. This can be used to effectively include a template in the
   * middle of another template.
   * This is equivalent to assign($varname, $this->parse($handle, true))
   */
  function assign_var_from_handle($varname, $handle)
  {
    $this->assign($varname, $this->parse($handle, true));
    return true;
  }

  /** see smarty append http://www.smarty.net/manual/en/api.append.php */
  function append($tpl_var, $value=null, $merge=false)
  {
    $this->smarty->append( $tpl_var, $value, $merge );
  }

  /**
   * Root-level variable concatenation. Appends a  string to an existing
   * variable assignment with the same name.
   */
  function concat($tpl_var, $value)
  {
    $old_val = & $this->smarty->get_template_vars($tpl_var);
    if ( isset($old_val) )
    {
      $old_val .= $value;
    }
    else
    {
      $this->assign($tpl_var, $value);
    }
  }

  /** see smarty append http://www.smarty.net/manual/en/api.clear_assign.php */
  function clear_assign($tpl_var)
  {
    $this->smarty->clear_assign( $tpl_var );
  }

  /** see smarty get_template_vars http://www.smarty.net/manual/en/api.get_template_vars.php */
  function &get_template_vars($name=null)
  {
    return $this->smarty->get_template_vars( $name );
  }


  /**
   * Load the file for the handle, eventually compile the file and run the compiled
   * code. This will add the output to the results or return the result if $return
   * is true.
   */
  function parse($handle, $return=false)
  {
    if ( !isset($this->files[$handle]) )
    {
      fatal_error("Template->parse(): Couldn't load template file for handle $handle");
    }

    $this->smarty->assign( 'ROOT_URL', get_root_url() );
    $this->smarty->assign( 'TAG_INPUT_ENABLED',
      ((is_adviser()) ? 'disabled="disabled" onclick="return false;"' : ''));

    $save_compile_id = $this->smarty->compile_id;
    $this->load_external_filters($handle);

    global $conf, $lang_info;
    if ( $conf['compiled_template_cache_language'] and isset($lang_info['code']) )
    {
      $this->smarty->compile_id .= '.'.$lang_info['code'];
    }

    $v = $this->smarty->fetch($this->files[$handle], null, null, false);

    $this->smarty->compile_id = $save_compile_id;
    $this->unload_external_filters($handle);

    if ($return)
    {
      return $v;
    }
    $this->output .= $v;
  }

  /**
   * Load the file for the handle, eventually compile the file and run the compiled
   * code. This will print out the results of executing the template.
   */
  function pparse($handle)
  {
    $this->parse($handle, false);
    $this->flush();
  }

  function flush()
  {
    if ( count($this->html_head_elements) )
    {
      $search = "\n</head>";
      $pos = strpos( $this->output, $search );
      if ($pos !== false)
      {
        $this->output = substr_replace( $this->output, "\n".implode( "\n", $this->html_head_elements ), $pos, 0 );
      } //else maybe error or warning ?
      $this->html_head_elements = array();
    }

    echo $this->output;
    $this->output='';
  }

  /** flushes the output */
  function p()
  {
    $this->flush();

    if ($this->smarty->debugging)
    {
      global $t2;
      $this->smarty->assign(
        array(
        'AAAA_DEBUG_TOTAL_TIME__' => get_elapsed_time($t2, get_moment())
        )
        );
      require_once(SMARTY_CORE_DIR . 'core.display_debug_console.php');
      echo smarty_core_display_debug_console(null, $this->smarty);
    }
  }

  /**
   * translate variable modifier - translates a text to the currently loaded
   * language
   */
  static function mod_translate($text)
  {
    return l10n($text);
  }

  /**
   * explode variable modifier - similar to php explode
   * 'Yes;No'|@explode:';' -> array('Yes', 'No')
   */
  static function mod_explode($text, $delimiter=',')
  {
    return explode($delimiter, $text);
  }

  /**
   * This smarty "html_head" block allows to add content just before
   * </head> element in the output after the head has been parsed. This is
   * handy in order to respect strict standards when <style> and <link>
   * html elements must appear in the <head> element
   */
  function block_html_head($params, $content, &$smarty, &$repeat)
  {
    $content = trim($content);
    if ( !empty($content) )
    { // second call
      $this->html_head_elements[] = $content;
    }
  }

 /**
   * This smarty "known_script" functions allows to insert well known java scripts
   * such as prototype, jquery, etc... only once. Examples:
   * {known_script id="jquery" src="{$ROOT_URL}template-common/lib/jquery.packed.js"}
   */
  function func_known_script($params, &$smarty )
  {
    if (!isset($params['id']))
    {
        $smarty->trigger_error("known_script: missing 'id' parameter");
        return;
    }
    $id = $params['id'];
    if (! isset( $this->known_scripts[$id] ) )
    {
      if (!isset($params['src']))
      {
          $smarty->trigger_error("known_script: missing 'src' parameter");
          return;
      }
      $this->known_scripts[$id] = $params['src'];
      $content = '<script type="text/javascript" src="'.$params['src'].'"></script>';
      if (isset($params['now']) and $params['now'] and empty($this->output) )
      {
        return $content;
      }
      $repeat = false;
      $this->block_html_head(null, $content, $smarty, $repeat);
    }
  }

 /**
   * This function allows to declare a Smarty prefilter from a plugin, thus allowing
   * it to modify template source before compilation and without changing core files
   * They will be processed by weight ascending.
   * http://www.smarty.net/manual/en/advanced.features.prefilters.php
   */
  function set_prefilter($handle, $callback, $weight=50)
  {
    $this->external_filters[$handle][$weight][] = array('prefilter', $callback);
    ksort($this->external_filters[$handle]);
  }

  function set_postfilter($handle, $callback, $weight=50)
  {
    $this->external_filters[$handle][$weight][] = array('postfilter', $callback);
    ksort($this->external_filters[$handle]);
  }

  function set_outputfilter($handle, $callback, $weight=50)
  {
    $this->external_filters[$handle][$weight][] = array('outputfilter', $callback);
    ksort($this->external_filters[$handle]);
  }
  
 /**
   * This function actually triggers the filters on the tpl files.
   * Called in the parse method.
   * http://www.smarty.net/manual/en/advanced.features.prefilters.php
   */
  function load_external_filters($handle)
  {
    if (isset($this->external_filters[$handle]))
    {
      $compile_id = '';
      foreach ($this->external_filters[$handle] as $filters) 
      {
        foreach ($filters as $filter) 
        {
          list($type, $callback) = $filter;
          $compile_id .= $type.( is_array($callback) ? implode('', $callback) : $callback );
          call_user_func(array($this->smarty, 'register_'.$type), $callback);
        }
      }
      $this->smarty->compile_id .= '.'.base_convert(crc32($compile_id), 10, 36);
    }
  }

  function unload_external_filters($handle)
  {
    if (isset($this->external_filters[$handle]))
    {
      foreach ($this->external_filters[$handle] as $filters) 
      {
        foreach ($filters as $filter) 
        {
          list($type, $callback) = $filter;
          call_user_func(array($this->smarty, 'unregister_'.$type), $callback);
        }
      }
    }
  }

  static function prefilter_white_space($source, &$smarty)
  {
    $ld = $smarty->left_delimiter;
    $rd = $smarty->right_delimiter;
    $ldq = preg_quote($ld, '#');
    $rdq = preg_quote($rd, '#');

    $regex = array();
    $tags = array('if', 'foreach', 'section');
    foreach($tags as $tag)
    {
      array_push($regex, "#^[ \t]+($ldq$tag"."[^$ld$rd]*$rdq)\s*$#m");
      array_push($regex, "#^[ \t]+($ldq/$tag$rdq)\s*$#m");
    }
    $tags = array('include', 'else', 'html_head');
    foreach($tags as $tag)
    {
      array_push($regex, "#^[ \t]+($ldq$tag"."[^$ld$rd]*$rdq)\s*$#m");
    }
    $source = preg_replace( $regex, "$1", $source);
    return $source;
  }

  /**
   * Smarty prefilter to allow caching (whenever possible) language strings
   * from templates.
   */
  static function prefilter_language($source, &$smarty)
  {
    global $lang;
    $ldq = preg_quote($smarty->left_delimiter, '~');
    $rdq = preg_quote($smarty->right_delimiter, '~');

    $regex = "~$ldq *\'([^'$]+)\'\|@translate *$rdq~";
    $source = preg_replace( $regex.'e', 'isset($lang[\'$1\']) ? $lang[\'$1\'] : \'$0\'', $source);

    $regex = "~$ldq *\'([^'$]+)\'\|@translate\|~";
    $source = preg_replace( $regex.'e', 'isset($lang[\'$1\']) ? \'{\'.var_export($lang[\'$1\'],true).\'|\' : \'$0\'', $source);

    $regex = "~($ldq *assign +var=.+ +value=)\'([^'$]+)\'\|@translate~e";
    $source = preg_replace( $regex, 'isset($lang[\'$2\']) ? \'$1\'.var_export($lang[\'$2\'],true) : \'$0\'', $source);

    return $source;
  }
}


/**
 * This class contains basic functions that can be called directly from the
 * templates in the form $pwg->l10n('edit')
 */
class PwgTemplateAdapter
{
  function l10n($text)
  {
    return l10n($text);
  }

  function l10n_dec($s, $p, $v)
  {
    return l10n_dec($s, $p, $v);
  }

  function sprintf()
  {
    $args = func_get_args();
    return call_user_func_array('sprintf',  $args );
  }
}

?>