aggregator.module 55.3 KB
Newer Older
1
<?php
Dries's avatar
Dries committed
2
// $Id$
Dries's avatar
 
Dries committed
3

Dries's avatar
 
Dries committed
4 5
/**
 * @file
6
 * Used to aggregate syndicated content (RSS, RDF, and Atom).
Dries's avatar
 
Dries committed
7 8
 */

Dries's avatar
 
Dries committed
9 10 11
/**
 * Implementation of hook_help().
 */
Dries's avatar
 
Dries committed
12
function aggregator_help($section) {
Dries's avatar
 
Dries committed
13
  switch ($section) {
Kjartan's avatar
Kjartan committed
14
    case 'admin/help#aggregator':
15 16 17 18 19 20 21 22 23 24 25 26 27
      $output = '<p>'. t('The news aggregator is a powerful on-site RSS syndicator/news reader that can gather fresh content from news sites and weblogs around the web.') .'</p>';
      $output .= '<p>'. t('Users can view the latest news chronologically in the <a href="%aggregator">main news aggregator display</a> or by <a href="%aggregator-sources">source</a>. Administrators can add, edit and delete feeds and choose how often to check for newly updated news for each individual feed. Administrators can also tag individual feeds with categories, offering selective grouping of some feeds into separate displays. Listings of the latest news for individual sources or categorized sources can be enabled as blocks for display in the sidebar through the <a href="%admin-block">block administration page</a>. The news aggregator requires cron to check for the latest news from the sites to which you have subscribed. Drupal also provides a <a href="%aggregator-opml">machine-readable OPML file</a> of all of your subscribed feeds.', array('%aggregator' => url('aggregator'), '%aggregator-sources' => url('aggregator/sources'), '%admin-block' => url('admin/block'), '%aggregator-opml' => url('aggregator/opml'))) .'</p>';
      $output .= t('<p>You can</p>
<ul>
<li>administer your list of news feeds <a href="%admin-aggregator">administer &gt;&gt;  aggregator</a>.</li>
<li>add a new feed <a href="%admin-aggregator-add-feed">administer &gt;&gt; aggregator &gt;&gt; add feed</a>.</li>
<li>add a new category <a href="%admin-aggregator-add-category">administer &gt;&gt; aggregator &gt;&gt; add category</a>.</li>
<li>configure global settings for the news aggregator <a href="%admin-settings-aggregator">administer &gt;&gt; settings &gt;&gt; aggregator</a>.</li>
<li>control access to the aggregator module through access permissions <a href="%admin-access">administer &gt;&gt; access control &gt;&gt; permissions</a>.</li>
<li>set permissions to access new feeds for user roles such as anonymous users at <a href="%admin-access">administer &gt;&gt; access control</a>.</li>
<li>view the <a href="%aggregator">aggregator page</a>.</li>
</ul>
', array('%admin-aggregator' => url('admin/aggregator'), '%admin-aggregator-add-feed' => url('admin/aggregator/add/feed'), '%admin-aggregator-add-category' => url('admin/aggregator/add/category'), '%admin-settings-aggregator' => url('admin/settings/aggregator'), '%admin-access' => url('admin/access'), '%aggregator' => url('aggregator')));
28
      $output .= '<p>'. t('For more information please read the configuration and customization handbook <a href="%aggregator">Aggregator page</a>.', array('%aggregator' => 'http://drupal.org/handbook/modules/aggregator/')) .'</p>';
29
      return $output;
Dries's avatar
 
Dries committed
30
    case 'admin/modules#description':
31
      return t('Aggregates syndicated content (RSS, RDF, and Atom feeds).');
Dries's avatar
 
Dries committed
32
    case 'admin/aggregator':
33
      return t('<p>Thousands of sites (particularly news sites and weblogs) publish their latest headlines and/or stories in a machine-readable format so that other sites can easily link to them. This content is usually in the form of an <a href="http://blogs.law.harvard.edu/tech/rss">RSS</a> feed (which is an XML-based syndication standard). To display the feed or category in a block you must decide how many items to show by editing the feed or block and turning on the <a href="%block">feed\'s block</a>.</p>', array('%block' => url('admin/block')));
Dries's avatar
 
Dries committed
34
    case 'admin/aggregator/add/feed':
35
      return t('<p>Add a site that has an RSS/RDF/Atom feed. The URL is the full path to the feed file. For the feed to update automatically you must run "cron.php" on a regular basis. If you already have a feed with the URL you are planning to use, the system will not accept another feed with the same URL.</p>');
Dries's avatar
 
Dries committed
36
    case 'admin/aggregator/add/category':
37
      return t('<p>Categories provide a way to group items from different news feeds together. Each news category has its own feed page and block. For example, you could tag various sport-related feeds as belonging to a category called <em>Sports</em>. News items can be added to a category automatically by setting a feed to automatically place its item into that category, or by using the categorize items link in any listing of news items.</p>');
Dries's avatar
 
Dries committed
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
/**
 * Implementation of hook_menu().
 */
function aggregator_menu($may_cache) {
  $items = array();
  $edit = user_access('administer news feeds');
  $view = user_access('access news feeds');

  if ($may_cache) {
    $items[] = array('path' => 'admin/aggregator',
      'title' => t('aggregator'),
      'callback' => 'aggregator_admin_overview',
      'access' => $edit);
    $items[] = array('path' => 'admin/aggregator/add/feed',
      'title' => t('add feed'),
      'callback' => 'aggregator_form_feed',
      'access' => $edit,
      'type' => MENU_LOCAL_TASK);
    $items[] = array('path' => 'admin/aggregator/add/category',
      'title' => t('add category'),
      'callback' => 'aggregator_form_category',
      'access' => $edit,
      'type' => MENU_LOCAL_TASK);
    $items[] = array('path' => 'admin/aggregator/remove',
      'title' => t('remove items'),
      'callback' => 'aggregator_admin_remove_feed',
      'access' => $edit,
      'type' => MENU_CALLBACK);
    $items[] = array('path' => 'admin/aggregator/update',
      'title' => t('update items'),
      'callback' => 'aggregator_admin_refresh_feed',
      'access' => $edit,
      'type' => MENU_CALLBACK);
    $items[] = array('path' => 'admin/aggregator/list',
      'title' => t('list'),
      'type' => MENU_DEFAULT_LOCAL_TASK,
      'weight' => -10);
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
    $items[] = array('path' => 'aggregator',
      'title' => t('news aggregator'),
      'callback' => 'aggregator_page_last',
      'access' => $view,
      'weight' => 5);
    $items[] = array('path' => 'aggregator/sources',
      'title' => t('sources'),
      'callback' => 'aggregator_page_sources',
      'access' => $view);
    $items[] = array('path' => 'aggregator/categories',
      'title' => t('categories'),
      'callback' => 'aggregator_page_categories',
      'access' => $view,
      'type' => MENU_ITEM_GROUPING);
    $items[] = array('path' => 'aggregator/rss',
      'title' => t('RSS feed'),
      'callback' => 'aggregator_page_rss',
      'access' => $view,
      'type' => MENU_CALLBACK);
    $items[] = array('path' => 'aggregator/opml',
      'title' => t('OPML feed'),
      'callback' => 'aggregator_page_opml',
      'access' => $view,
      'type' => MENU_CALLBACK);
103

104 105 106 107 108 109 110
    $result = db_query('SELECT title, cid FROM {aggregator_category} ORDER BY title');
    while ($category = db_fetch_array($result)) {
      $items[] = array('path' => 'aggregator/categories/'. $category['cid'],
        'title' => $category['title'],
        'callback' => 'aggregator_page_category',
        'access' => $view);
    }
111 112 113 114 115 116 117
  }
  else {
    if (arg(0) == 'aggregator' && is_numeric(arg(2))) {
      if (arg(1) == 'sources') {
        $feed = aggregator_get_feed(arg(2));
        if ($feed) {
          $items[] = array('path' => 'aggregator/sources/'. $feed['fid'],
118
            'title' => $feed['title'],
119
            'callback' => 'aggregator_page_source',
120 121
            'access' => $view,
            'type' => MENU_CALLBACK);
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
          $items[] = array('path' => 'aggregator/sources/'. $feed['fid'] .'/view',
            'title' => t('view'),
            'type' => MENU_DEFAULT_LOCAL_TASK,
            'weight' => -10);
          $items[] = array('path' => 'aggregator/sources/'. $feed['fid'] .'/categorize',
            'title' => t('categorize'),
            'callback' => 'aggregator_page_source',
            'access' => $edit,
            'type' => MENU_LOCAL_TASK);
          $items[] = array('path' => 'aggregator/sources/'. $feed['fid'] .'/configure',
            'title' => t('configure'),
            'callback' => 'aggregator_form_feed',
            'callback arguments' => array($feed),
            'access' => $edit,
            'type' => MENU_LOCAL_TASK,
            'weight' => 1);
        }
      }
      else if (arg(1) == 'categories') {
        $category = aggregator_get_category(arg(2));
        if ($category) {
          $items[] = array('path' => 'aggregator/categories/'. $category['cid'] .'/view',
            'title' => t('view'),
            'type' => MENU_DEFAULT_LOCAL_TASK,
            'weight' => -10);
          $items[] = array('path' => 'aggregator/categories/'. $category['cid'] .'/categorize',
            'title' => t('categorize'),
            'callback' => 'aggregator_page_category',
            'access' => $edit,
            'type' => MENU_LOCAL_TASK);
          $items[] = array('path' => 'aggregator/categories/'. $category['cid'] .'/configure',
            'title' => t('configure'),
            'callback' => 'aggregator_form_category',
            'callback arguments' => array($category),
            'access' => $edit,
            'type' => MENU_LOCAL_TASK,
            'weight' => 1);
        }
      }
    }
    else if (arg(1) == 'aggregator' && is_numeric(arg(4))) {
      if (arg(3) == 'feed') {
        $feed = aggregator_get_feed(arg(4));
        if ($feed) {
          $items[] = array('path' => 'admin/aggregator/edit/feed/'. $feed['fid'],
            'title' => t('edit feed'),
            'callback' => 'aggregator_form_feed',
            'callback arguments' => array($feed),
            'access' => $edit,
            'type' => MENU_CALLBACK);
        }
      }
      else {
        $category = aggregator_get_category(arg(4));
        if ($category) {
          $items[] = array('path' => 'admin/aggregator/edit/category/'. $category['cid'],
            'title' => t('edit category'),
            'callback' => 'aggregator_form_category',
            'callback arguments' => array($category),
            'access' => $edit,
            'type' => MENU_CALLBACK);
        }
      }
    }
  }

  return $items;
}

/**
 * Implementation of hook_settings().
 */
194
function aggregator_settings() {
195
  $items = array(0 => t('none')) + drupal_map_assoc(array(3, 5, 10, 15, 20, 25), '_aggregator_items');
196
  $period = drupal_map_assoc(array(3600, 10800, 21600, 32400, 43200, 86400, 172800, 259200, 604800, 1209600, 2419200, 4838400, 9676800), 'format_interval');
Dries's avatar
 
Dries committed
197

198
  $form['aggregator_allowed_html_tags'] = array(
199 200 201
    '#type' => 'textfield', '#title' => t('Allowed HTML tags'), '#size' => 80, '#maxlength' => 255,
    '#default_value' => variable_get('aggregator_allowed_html_tags', '<a> <b> <br> <dd> <dl> <dt> <em> <i> <li> <ol> <p> <strong> <u> <ul>'),
    '#description' => t('The list of tags which are allowed in feeds, i.e., which will not be removed by Drupal.')
202 203 204
  );

  $form['aggregator_summary_items'] = array(
205 206 207
    '#type' => 'select', '#title' => t('Items shown in sources and categories pages') ,
    '#default_value' => variable_get('aggregator_summary_items', 3), '#options' => $items,
    '#description' =>  t('The number of items which will be shown with each feed or category in the feed and category summary pages.')
208 209 210
  );

  $form['aggregator_clear'] = array(
211 212
    '#type' => 'select', '#title' => t('Discard news items older than'),
    '#default_value' => variable_get('aggregator_clear', 9676800), '#options' => $period,
213
    '#description' => t('Older news items will be automatically discarded. Requires crontab.')
214
  );
215

216
  $form['aggregator_category_selector'] = array(
217
    '#type' => 'radios', '#title' => t('Category selection type'), '#default_value' => variable_get('aggregator_category_selector', 'check'),
218
    '#options' => array('checkboxes' => t('checkboxes'), 'select' => t('multiple selector')),
219
    '#description' => t('The type of category selection widget which is shown on categorization pages. Checkboxes are easier to use; a multiple selector is good for working with large numbers of categories.')
220 221
  );
  return $form;
Dries's avatar
 
Dries committed
222 223
}

Dries's avatar
 
Dries committed
224 225 226
/**
 * Implementation of hook_perm().
 */
Kjartan's avatar
Kjartan committed
227
function aggregator_perm() {
Dries's avatar
 
Dries committed
228
  return array('administer news feeds', 'access news feeds');
Dries's avatar
 
Dries committed
229 230
}

Dries's avatar
 
Dries committed
231 232 233 234 235
/**
 * Implementation of hook_cron().
 *
 * Checks news feeds for updates once their refresh interval has elapsed.
 */
Dries's avatar
 
Dries committed
236
function aggregator_cron() {
Dries's avatar
 
Dries committed
237
  $result = db_query('SELECT * FROM {aggregator_feed} WHERE checked + refresh < %d', time());
Dries's avatar
 
Dries committed
238 239
  while ($feed = db_fetch_array($result)) {
    aggregator_refresh($feed);
Dries's avatar
 
Dries committed
240 241 242
  }
}

Dries's avatar
 
Dries committed
243 244 245 246 247
/**
 * Implementation of hook_block().
 *
 * Generates blocks for the latest news items in each category and feed.
 */
Dries's avatar
Dries committed
248
function aggregator_block($op, $delta = 0, $edit = array()) {
Dries's avatar
 
Dries committed
249
  if (user_access('access news feeds')) {
Dries's avatar
 
Dries committed
250
    if ($op == 'list') {
Dries's avatar
Dries committed
251
      $result = db_query('SELECT cid, title FROM {aggregator_category} ORDER BY title');
Dries's avatar
 
Dries committed
252
      while ($category = db_fetch_object($result)) {
253
        $block['category-'. $category->cid]['info'] = t('%title category latest items', array('%title' => theme('placeholder', $category->title)));
Kjartan's avatar
Kjartan committed
254
      }
Dries's avatar
Dries committed
255
      $result = db_query('SELECT fid, title FROM {aggregator_feed} ORDER BY fid');
Kjartan's avatar
Kjartan committed
256
      while ($feed = db_fetch_object($result)) {
257
        $block['feed-'. $feed->fid]['info'] = t('%title feed latest items', array('%title' => theme('placeholder', $feed->title)));
Kjartan's avatar
Kjartan committed
258
      }
Dries's avatar
 
Dries committed
259
    }
Dries's avatar
Dries committed
260
    else if ($op == 'configure') {
261
      list($type, $id) = explode('-', $delta);
Dries's avatar
Dries committed
262 263 264 265 266 267
      if ($type == 'category') {
        $value = db_result(db_query('SELECT block FROM {aggregator_category} WHERE cid = %d', $id));
      }
      else {
        $value = db_result(db_query('SELECT block FROM {aggregator_feed} WHERE fid = %d', $id));
      }
268
      $form['block'] = array('#type' => 'select', '#title' => t('Number of news items in block'), '#default_value' => $value, '#options' => drupal_map_assoc(array(2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)));
269
      return $form;
Dries's avatar
Dries committed
270 271
    }
    else if ($op == 'save') {
272
      list($type, $id) = explode('-', $delta);
Dries's avatar
Dries committed
273 274 275 276 277 278 279
      if ($type == 'category') {
        $value = db_query('UPDATE {aggregator_category} SET block = %d WHERE cid = %d', $edit['block'], $id);
      }
      else {
        $value = db_query('UPDATE {aggregator_feed} SET block = %d WHERE fid = %d', $edit['block'], $id);
      }
    }
280
    else if ($op == 'view') {
281
      list($type, $id) = explode('-', $delta);
Kjartan's avatar
Kjartan committed
282
      switch ($type) {
Dries's avatar
 
Dries committed
283
        case 'feed':
284
          if ($feed = db_fetch_object(db_query('SELECT fid, title, block FROM {aggregator_feed} WHERE fid = %d', $id))) {
285
            $block['subject'] = check_plain($feed->title);
286 287 288
            $result = db_query_range('SELECT * FROM {aggregator_item} WHERE fid = %d ORDER BY timestamp DESC, iid DESC', $feed->fid, 0, $feed->block);
            $block['content'] = '<div class="more-link">'. l(t('more'), 'aggregator/sources/'. $feed->fid, array('title' => t('View this feed\'s recent news.'))) .'</div>';
          }
Kjartan's avatar
Kjartan committed
289
          break;
290

Dries's avatar
 
Dries committed
291
        case 'category':
292
          if ($category = db_fetch_object(db_query('SELECT cid, title, block FROM {aggregator_category} WHERE cid = %d', $id))) {
293
            $block['subject'] = check_plain($category->title);
294 295 296
            $result = db_query_range('SELECT i.* FROM {aggregator_category_item} ci LEFT JOIN {aggregator_item} i ON ci.iid = i.iid WHERE ci.cid = %d ORDER BY i.timestamp DESC, i.iid DESC', $category->cid, 0, $category->block);
            $block['content'] = '<div class="more-link">'. l(t('more'), 'aggregator/categories/'. $category->cid, array('title' => t('View this category\'s recent news.'))) .'</div>';
          }
Kjartan's avatar
Kjartan committed
297 298
          break;
      }
Dries's avatar
 
Dries committed
299 300
      $items = array();
      while ($item = db_fetch_object($result)) {
Dries's avatar
 
Dries committed
301
        $items[] = theme('aggregator_block_item', $item);
Dries's avatar
 
Dries committed
302
      }
Dries's avatar
 
Dries committed
303
      $block['content'] = theme('item_list', $items) . $block['content'];
Dries's avatar
 
Dries committed
304
    }
Dries's avatar
 
Dries committed
305
    return $block;
Dries's avatar
 
Dries committed
306
  }
Dries's avatar
 
Dries committed
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
/**
 * Generate a form to add/edit/delete aggregator categories.
 */
 function aggregator_form_category($edit = array()) {
  $form['title'] = array('#type' => 'textfield',
    '#title' => t('Title'),
    '#default_value' => $edit['title'],
    '#maxlength' => 64,
    '#required' => TRUE,
  );
  $form['description'] = array('#type' => 'textarea',
    '#title' => t('Description'),
    '#default_value' => $edit['description'],
  );
  $form['submit'] = array('#type' => 'submit', '#value' =>t('Submit'));

  if ($edit['cid']) {
    $form['delete'] = array('#type' => 'submit', '#value' =>t('Delete'));
    $form['cid'] = array('#type' => 'hidden', '#value' => $edit['cid']);
  }

  return drupal_get_form('aggregator_form_category', $form);
}

/**
 * Validate aggregator_form_feed form submissions.
 */
function aggregator_form_category_validate($form_id, $form_values) {
  if ($_POST['op'] == t('Submit')) {
    // Check for duplicate titles
    if (isset($form_values['cid'])) {
      $category = db_fetch_object(db_query("SELECT cid FROM {aggregator_category} WHERE title = '%s' AND cid != %d", $form_values['title'], $form_values['cid']));
    }
    else {
      $category = db_fetch_object(db_query("SELECT cid FROM {aggregator_category} WHERE title = '%s'", $form_values['title']));
    }
    if ($category) {
      form_set_error('title', t('A category named %category already exists. Please enter a unique title.', array('%category' => theme('placeholder', $form_values['title']))));
    }
  }
}

/**
 * Process aggregator_form_category form submissions.
 * @todo Add delete confirmation dialog.
 */
function aggregator_form_category_submit($form_id, $form_values) {
  if ($_POST['op'] == t('Delete')) {
    $title = $form_values['title'];
    // Unset the title:
    unset($form_values['title']);
  }
  aggregator_save_category($form_values);
  menu_rebuild();
  if (isset($form_values['cid'])) {
    if (isset($form_values['title'])) {
      drupal_set_message(t('The category %category has been updated.', array('%category' => theme('placeholder', $form_values['title']))));
      if (arg(0) == 'admin') {
        return 'admin/aggregator/';
      }
      else {
        return 'aggregator/categories/'. $form_values['cid'];
      }
    }
    else {
      watchdog('aggregator', t('Category %category deleted.', array('%category' => theme('placeholder', $title))));
      drupal_set_message(t('The category %category has been deleted.', array('%category' => theme('placeholder', $title))));
      if (arg(0) == 'admin') {
        return 'admin/aggregator/';
      }
      else {
        return 'aggregator/categories/';
      }
    }
  }
  else {
    watchdog('aggregator', t('Category %category added.', array('%category' => theme('placeholder', $form_values['title']))), WATCHDOG_NOTICE, l(t('view'), 'admin/aggregator'));
    drupal_set_message(t('The category %category has been added.', array('%category' => theme('placeholder', $form_values['title']))));
  }
}

/**
 * Add/edit/delete aggregator categories.
 */
function aggregator_save_category($edit) {
  if ($edit['cid'] && $edit['title']) {
    db_query("UPDATE {aggregator_category} SET title = '%s', description = '%s' WHERE cid = %d", $edit['title'], $edit['description'], $edit['cid']);
  }
  else if ($edit['cid']) {
    db_query('DELETE FROM {aggregator_category} WHERE cid = %d', $edit['cid']);
  }
  else if ($edit['title']) {
    // A single unique id for bundles and feeds, to use in blocks
    $next_id = db_next_id('{aggregator_category}_cid');
    db_query("INSERT INTO {aggregator_category} (cid, title, description, block) VALUES (%d, '%s', '%s', 5)", $next_id, $edit['title'], $edit['description']);
  }
}

/**
 * Generate a form to add/edit feed sources.
 */
function aggregator_form_feed($edit = array()) {
  $period = drupal_map_assoc(array(900, 1800, 3600, 7200, 10800, 21600, 32400, 43200, 64800, 86400, 172800, 259200, 604800, 1209600, 2419200), 'format_interval');

  if ($edit['refresh'] == '') {
    $edit['refresh'] = 3600;
  }

  $form['title'] = array('#type' => 'textfield',
    '#title' => t('Title'),
    '#default_value' => $edit['title'],
    '#maxlength' => 64,
    '#description' => t('The name of the feed; typically the name of the web site you syndicate content from.'),
    '#required' => TRUE,
  );
  $form['url'] = array('#type' => 'textfield',
    '#title' => t('URL'),
    '#default_value' => $edit['url'],
    '#maxlength' => 255,
    '#description' => t('The fully-qualified URL of the feed.'),
    '#required' => TRUE,
  );
  $form['refresh'] = array('#type' => 'select',
    '#title' => t('Update interval'),
    '#default_value' => $edit['refresh'],
    '#options' => $period,
    '#description' => t('The refresh interval indicating how often you want to update this feed. Requires crontab.'),
  );

  // Handling of categories:
  $options = array();
  $values = array();
  $categories = db_query('SELECT c.cid, c.title, f.fid FROM {aggregator_category} c LEFT JOIN {aggregator_category_feed} f ON c.cid = f.cid AND f.fid = %d ORDER BY title', $edit['fid']);
  while ($category = db_fetch_object($categories)) {
    $options[$category->cid] = $category->title;
    if ($category->fid) $values[] = check_plain($category->cid);
  }
  if ($options) {
    $form['category'] = array('#type' => 'checkboxes',
      '#title' => t('Categorize news items'),
      '#default_value' => $values,
      '#options' => $options,
      '#description' => t('New items in this feed will be automatically filed in the checked categories as they are received.'),
    );
  }
  $form['submit'] = array('#type' => 'submit', '#value' =>t('Submit'));

  if ($edit['fid']) {
    $form['delete'] = array('#type' => 'submit', '#value' =>t('Delete'));
    $form['fid'] = array('#type' => 'hidden', '#value' => $edit['fid']);
  }

  return drupal_get_form('aggregator_form_feed', $form);
}

/**
 * Validate aggregator_form_feed form submissions.
 */
function aggregator_form_feed_validate($form_id, $form_values) {
  if ($_POST['op'] == t('Submit')) {
    // Check for duplicate titles
    if (isset($form_values['fid'])) {
      $result = db_query("SELECT title, url FROM {aggregator_feed} WHERE (title = '%s' OR url='%s') AND fid != %d", $form_values['title'], $form_values['url'], $form_values['fid']);
    }
    else {
      $result = db_query("SELECT title, url FROM {aggregator_feed} WHERE title = '%s' OR url='%s'", $form_values['title'], $form_values['url']);
    }
    while ($feed = db_fetch_object($result)) {
      if (strcasecmp($feed->title, $form_values['title']) == 0) {
        form_set_error('title', t('A feed named %feed already exists. Please enter a unique title.', array('%feed' => theme('placeholder', $form_values['title']))));
      }
    }
  }
}

/**
 * Process aggregator_form_feed form submissions.
 * @todo Add delete confirmation dialog.
 */
function aggregator_form_feed_submit($form_id, $form_values) {
  if ($_POST['op'] == t('Delete')) {
    $title = $form_values['title'];
    // Unset the title:
    unset($form_values['title']);
  }
  aggregator_save_feed($form_values);
  menu_rebuild();
  if (isset($form_values['fid'])) {
    if (isset($form_values['title'])) {
      drupal_set_message(t('The feed %feed has been updated.', array('%feed' => theme('placeholder', $form_values['title']))));
      if (arg(0) == 'admin') {
        return 'admin/aggregator/';
      }
      else {
        return 'aggregator/sources/'. $form_values['fid'];
      }
    }
    else {
      watchdog('aggregator', t('Feed %feed deleted.', array('%feed' => theme('placeholder', $title))));
      drupal_set_message(t('The feed %feed has been deleted.', array('%feed' => theme('placeholder', $title))));
      if (arg(0) == 'admin') {
        return 'admin/aggregator/';
      }
      else {
        return 'aggregator/sources/';
      }
    }
  }
  else {
    watchdog('aggregator', t('Feed %feed added.', array('%feed' => theme('placeholder', $form_values['title']))), WATCHDOG_NOTICE, l(t('view'), 'admin/aggregator'));
    drupal_set_message(t('The feed %feed has been added.', array('%feed' => theme('placeholder', $form_values['title']))));
  }
}

/**
 * Add/edit/delete an aggregator feed.
 */
function aggregator_save_feed($edit) {
  if ($edit['fid']) {
    // An existing feed is being modified, delete the category listings.
    db_query('DELETE FROM {aggregator_category_feed} WHERE fid = %d', $edit['fid']);
  }
  if ($edit['fid'] && $edit['title']) {
    db_query("UPDATE {aggregator_feed} SET title = '%s', url = '%s', refresh = %d WHERE fid = %d", $edit['title'], $edit['url'], $edit['refresh'], $edit['fid']);
  }
  else if ($edit['fid']) {
    $result = db_query('SELECT iid FROM {aggregator_item} WHERE fid = %d', $edit['fid']);
    while ($item = db_fetch_object($result)) {
      $items[] = "iid = $item->iid";
    }
    if ($items) {
      db_query('DELETE FROM {aggregator_category_item} WHERE '. implode(' OR ', $items));
    }
    db_query('DELETE FROM {aggregator_feed} WHERE fid = %d', $edit['fid']);
    db_query('DELETE FROM {aggregator_item} WHERE fid = %d', $edit['fid']);
  }
  else if ($edit['title']) {
    // A single unique id for bundles and feeds, to use in blocks.
    $edit['fid'] = db_next_id('{aggregator_feed}_fid');
    db_query("INSERT INTO {aggregator_feed} (fid, title, url, refresh, block) VALUES (%d, '%s', '%s', %d, 5)", $edit['fid'], $edit['title'], $edit['url'], $edit['refresh']);
  }
  if ($edit['title']) {
    // The feed is being saved, save the categories as well.
    if ($edit['category']) {
      foreach ($edit['category'] as $cid => $value) {
        if ($value) {
          db_query('INSERT INTO {aggregator_category_feed} (fid, cid) VALUES (%d, %d)', $edit['fid'], $cid);
        }
      }
    }
  }
}

Dries's avatar
 
Dries committed
562 563 564 565
function aggregator_remove($feed) {
  $result = db_query('SELECT iid FROM {aggregator_item} WHERE fid = %d', $feed['fid']);
  while ($item = db_fetch_object($result)) {
    $items[] = "iid = $item->iid";
Dries's avatar
 
Dries committed
566
  }
Dries's avatar
 
Dries committed
567 568
  if ($items) {
    db_query('DELETE FROM {aggregator_category_item} WHERE '. implode(' OR ', $items));
Dries's avatar
 
Dries committed
569
  }
Dries's avatar
 
Dries committed
570
  db_query('DELETE FROM {aggregator_item} WHERE fid = %d', $feed['fid']);
Kjartan's avatar
Kjartan committed
571
  db_query("UPDATE {aggregator_feed} SET checked = 0, etag = '', modified = 0 WHERE fid = %d", $feed['fid']);
572
  drupal_set_message(t('The news items from %site have been removed.', array('%site' => theme('placeholder', $feed['title']))));
Dries's avatar
 
Dries committed
573 574
}

Dries's avatar
 
Dries committed
575 576 577
/**
 * Call-back function used by the XML parser.
 */
Kjartan's avatar
Kjartan committed
578
function aggregator_element_start($parser, $name, $attributes) {
579
  global $item, $element, $tag, $items, $channel;
Dries's avatar
 
Dries committed
580 581

  switch ($name) {
Dries's avatar
 
Dries committed
582 583
    case 'IMAGE':
    case 'TEXTINPUT':
584 585 586 587 588 589
    case 'CONTENT':
    case 'SUMMARY':
    case 'TAGLINE':
    case 'SUBTITLE':
    case 'LOGO':
    case 'INFO':
Dries's avatar
 
Dries committed
590 591
      $element = $name;
      break;
592 593 594 595
    case 'ID':
      if ($element != 'ITEM') {
        $element = $name;
      }
596 597 598 599 600 601 602 603 604 605
    case 'LINK':
      if ($attributes['REL'] == 'alternate') {
        if ($element == 'ITEM') {
          $items[$item]['LINK'] = $attributes['HREF'];
        }
        else {
          $channel['LINK'] = $attributes['HREF'];
        }
      }
      break;
Dries's avatar
 
Dries committed
606
    case 'ITEM':
Dries's avatar
 
Dries committed
607 608
      $element = $name;
      $item += 1;
609 610 611 612 613
      break;
    case 'ENTRY':
      $element = 'ITEM';
      $item += 1;
      break;
614 615 616 617 618
  }

  $tag = $name;
}

Dries's avatar
 
Dries committed
619 620 621
/**
 * Call-back function used by the XML parser.
 */
Kjartan's avatar
Kjartan committed
622
function aggregator_element_end($parser, $name) {
Dries's avatar
 
Dries committed
623 624
  global $element;

Dries's avatar
 
Dries committed
625
  switch ($name) {
Dries's avatar
 
Dries committed
626 627 628
    case 'IMAGE':
    case 'TEXTINPUT':
    case 'ITEM':
629 630 631
    case 'ENTRY':
    case 'CONTENT':
    case 'INFO':
632 633
      $element = '';
      break;
634
    case 'ID':
635
      if ($element == 'ID') {
636 637
        $element = '';
      }
Dries's avatar
 
Dries committed
638
  }
639 640
}

Dries's avatar
 
Dries committed
641 642 643
/**
 * Call-back function used by the XML parser.
 */
Kjartan's avatar
Kjartan committed
644
function aggregator_element_data($parser, $data) {
Dries's avatar
 
Dries committed
645
  global $channel, $element, $items, $item, $image, $tag;
Dries's avatar
 
Dries committed
646 647

  switch ($element) {
Dries's avatar
 
Dries committed
648
    case 'ITEM':
Dries's avatar
 
Dries committed
649 650
      $items[$item][$tag] .= $data;
      break;
Dries's avatar
 
Dries committed
651
    case 'IMAGE':
652
    case 'LOGO':
Dries's avatar
 
Dries committed
653 654
      $image[$tag] .= $data;
      break;
655 656 657 658 659 660
    case 'LINK':
      if ($data) {
        $items[$item][$tag] .= $data;
      }
      break;
    case 'CONTENT':
661
      $items[$item]['CONTENT'] .= $data;
662 663
      break;
    case 'SUMMARY':
664
      $items[$item]['SUMMARY'] .= $data;
665 666 667 668 669 670 671
      break;
    case 'TAGLINE':
    case 'SUBTITLE':
      $channel['DESCRIPTION'] .= $data;
      break;
    case 'INFO':
    case 'ID':
Dries's avatar
 
Dries committed
672 673 674
    case 'TEXTINPUT':
      // The sub-element is not supported. However, we must recognize
      // it or its contents will end up in the item array.
Dries's avatar
 
Dries committed
675 676 677
      break;
    default:
      $channel[$tag] .= $data;
678 679 680
  }
}

Dries's avatar
 
Dries committed
681 682 683
/**
 * Checks a news feed for new items.
 */
Kjartan's avatar
Kjartan committed
684
function aggregator_refresh($feed) {
Dries's avatar
 
Dries committed
685 686
  global $channel, $image;

Dries's avatar
 
Dries committed
687 688 689 690 691 692
  // Generate conditional GET headers.
  $headers = array();
  if ($feed['etag']) {
    $headers['If-None-Match'] = $feed['etag'];
  }
  if ($feed['modified']) {
Dries's avatar
 
Dries committed
693
    $headers['If-Modified-Since'] = gmdate('D, d M Y H:i:s', $feed['modified']) .' GMT';
Dries's avatar
 
Dries committed
694 695 696 697 698
  }

  // Request feed.
  $result = drupal_http_request($feed['url'], $headers);

699
  // Process HTTP response code.
Dries's avatar
 
Dries committed
700 701
  switch ($result->code) {
    case 304:
Dries's avatar
 
Dries committed
702
      db_query('UPDATE {aggregator_feed} SET checked = %d WHERE fid = %d', time(), $feed['fid']);
703
      drupal_set_message(t('There is no new syndicated content from %site.', array('%site' => theme('placeholder', $feed['title']))));
Dries's avatar
 
Dries committed
704
      break;
Dries's avatar
 
Dries committed
705 706
    case 301:
      $feed['url'] = $result->redirect_url;
707
      watchdog('aggregator', t('Updated URL for feed %title to %url.', array('%title' => theme('placeholder', $feed['title']), '%url' => theme('placeholder', $feed['url']))));
708

Dries's avatar
 
Dries committed
709 710 711 712
    case 200:
    case 302:
    case 307:
      // Filter the input data:
713
     if (aggregator_parse_feed($result->data, $feed)) {
714

Dries's avatar
 
Dries committed
715 716 717
        if ($result->headers['Last-Modified']) {
          $modified = strtotime($result->headers['Last-Modified']);
        }
Dries's avatar
Dries committed
718

719 720 721 722 723
        /*
        ** Prepare the channel data:
        */

        foreach ($channel as $key => $value) {
724
          $channel[$key] = trim($value);
725 726
        }

Dries's avatar
 
Dries committed
727 728 729
        /*
        ** Prepare the image data (if any):
        */
Dries's avatar
 
Dries committed
730

Dries's avatar
 
Dries committed
731 732 733
        foreach ($image as $key => $value) {
          $image[$key] = trim($value);
        }
Dries's avatar
 
Dries committed
734

Dries's avatar
 
Dries committed
735
        if ($image['LINK'] && $image['URL'] && $image['TITLE']) {
736 737
          // Note, we should really use theme_image() here but that only works with local images it won't work with images fetched with a URL unless PHP version > 5
          $image = '<a href="'. check_url($image['LINK']) .'" class="feed-image"><img src="'. check_url($image['URL']) .'" alt="'. check_plain($image['TITLE']) .'" /></a>';
Dries's avatar
 
Dries committed
738
        }
Dries's avatar
 
Dries committed
739 740 741
        else {
          $image = NULL;
        }
Dries's avatar
 
Dries committed
742

Dries's avatar
 
Dries committed
743 744 745
        /*
        ** Update the feed data:
        */
Dries's avatar
 
Dries committed
746

747
        db_query("UPDATE {aggregator_feed} SET url = '%s', checked = %d, link = '%s', description = '%s', image = '%s', etag = '%s', modified = %d WHERE fid = %d", $feed['url'], time(), $channel['LINK'], $channel['DESCRIPTION'], $image, $result->headers['ETag'], $modified, $feed['fid']);
Dries's avatar
 
Dries committed
748

Dries's avatar
 
Dries committed
749 750 751
        /*
        ** Clear the cache:
        */
Dries's avatar
 
Dries committed
752

Dries's avatar
 
Dries committed
753
        cache_clear_all();
Dries's avatar
 
Dries committed
754

755 756
        watchdog('aggregator', t('There is new syndicated content from %site.', array('%site' => theme('placeholder', $feed['title']))));
        drupal_set_message(t('There is new syndicated content from %site.', array('%site' => theme('placeholder', $feed['title']))));
Dries's avatar
 
Dries committed
757 758
      }
      break;
Dries's avatar
 
Dries committed
759
    default:
760 761
      watchdog('aggregator', t('The RSS-feed from %site seems to be broken, due to "%error".', array('%site' => theme('placeholder', $feed['title']), '%error' => theme('placeholder', $result->code .' '. $result->error))), WATCHDOG_WARNING);
      drupal_set_message(t('The RSS-feed from %site seems to be broken, because of error "%error".', array('%site' => theme('placeholder', $feed['title']), '%error' => theme('placeholder', $result->code .' '. $result->error))));
Dries's avatar
 
Dries committed
762
  }
Dries's avatar
 
Dries committed
763
}
Dries's avatar
 
Dries committed
764

Dries's avatar
 
Dries committed
765 766 767 768
/**
 * Parse the W3C date/time format, a subset of ISO 8601. PHP date parsing
 * functions do not handle this format.
 * See http://www.w3.org/TR/NOTE-datetime for more information.
769
 * Originally from MagpieRSS (http://magpierss.sourceforge.net/).
Dries's avatar
 
Dries committed
770 771
 *
 * @param $date_str A string with a potentially W3C DTF date.
772
 * @return A timestamp if parsed successfully or -1 if not.
Dries's avatar
 
Dries committed
773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797
 */
function aggregator_parse_w3cdtf($date_str) {
  if (preg_match('/(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2})(:(\d{2}))?(?:([-+])(\d{2}):?(\d{2})|(Z))?/', $date_str, $match)) {
    list($year, $month, $day, $hours, $minutes, $seconds) = array($match[1], $match[2], $match[3], $match[4], $match[5], $match[6]);
    // calc epoch for current date assuming GMT
    $epoch = gmmktime($hours, $minutes, $seconds, $month, $day, $year);
    if ($match[10] != 'Z') { // Z is zulu time, aka GMT
      list($tz_mod, $tz_hour, $tz_min) = array($match[8], $match[9], $match[10]);
      // zero out the variables
      if (!$tz_hour) {
        $tz_hour = 0;
      }
      if (!$tz_min) {
        $tz_min = 0;
      }
      $offset_secs = (($tz_hour * 60) + $tz_min) * 60;
      // is timezone ahead of GMT?  then subtract offset
      if ($tz_mod == '+') {
        $offset_secs *= -1;
      }
      $epoch += $offset_secs;
    }
    return $epoch;
  }
  else {
798
    return FALSE;
Dries's avatar
 
Dries committed
799 800 801
  }
}

Dries's avatar
 
Dries committed
802
function aggregator_parse_feed(&$data, $feed) {
Dries's avatar
 
Dries committed
803
  global $items, $image, $channel;
Dries's avatar
 
Dries committed
804

Dries's avatar
 
Dries committed
805
  // Unset the global variables before we use them:
Dries's avatar
 
Dries committed
806
  unset($GLOBALS['element'], $GLOBALS['item'], $GLOBALS['tag']);
Dries's avatar
 
Dries committed
807
  $items = array();
Dries's avatar
 
Dries committed
808
  $image = array();
Dries's avatar
 
Dries committed
809
  $channel = array();
810

Dries's avatar
 
Dries committed
811 812
  // parse the data:
  $xml_parser = drupal_xml_parser_create($data);
Dries's avatar
 
Dries committed
813 814
  xml_set_element_handler($xml_parser, 'aggregator_element_start', 'aggregator_element_end');
  xml_set_character_data_handler($xml_parser, 'aggregator_element_data');
Dries's avatar
 
Dries committed
815

Dries's avatar
 
Dries committed
816
  if (!xml_parse($xml_parser, $data, 1)) {
817 818
    watchdog('aggregator', t('The RSS-feed from %site seems to be broken, due to an error "%error" on line %line.', array('%site' => theme('placeholder', $feed['title']), '%error' => xml_error_string(xml_get_error_code($xml_parser)), '%line' => xml_get_current_line_number($xml_parser))), WATCHDOG_WARNING);
    drupal_set_message(t('The RSS-feed from %site seems to be broken, because of error "%error" on line %line.', array('%site' => theme('placeholder', $feed['title']), '%error' => xml_error_string(xml_get_error_code($xml_parser)), '%line' => xml_get_current_line_number($xml_parser))), 'error');
Dries's avatar
 
Dries committed
819
    return 0;
Dries's avatar
 
Dries committed
820 821
  }
  xml_parser_free($xml_parser);
Dries's avatar
 
Dries committed
822

Dries's avatar
 
Dries committed
823 824
  /*
  ** We reverse the array such that we store the first item last,
825
  ** and the last item first. In the database, the newest item
Dries's avatar
 
Dries committed
826 827
  ** should be at the top.
  */
Dries's avatar
 
Dries committed
828

Dries's avatar
 
Dries committed
829
  $items = array_reverse($items);
Dries's avatar
 
Dries committed
830

Dries's avatar
 
Dries committed
831 832
  foreach ($items as $item) {
    unset($title, $link, $author, $description);
833

Dries's avatar
 
Dries committed
834 835
    // Prepare the item:
    foreach ($item as $key => $value) {
836
      $item[$key] = trim($value);
Dries's avatar
 
Dries committed
837
    }
Dries's avatar
Dries committed
838

Dries's avatar
 
Dries committed
839
    /*
840
    ** Resolve the item's title. If no title is found, we use
Dries's avatar
 
Dries committed
841 842 843 844
    ** up to 40 characters of the description ending at a word
    ** boundary but not splitting potential entities.
    */

Dries's avatar
 
Dries committed
845 846
    if ($item['TITLE']) {
      $title = $item['TITLE'];
Dries's avatar
 
Dries committed
847 848
    }
    else {
Dries's avatar
 
Dries committed
849
      $title = preg_replace('/^(.*)[^\w;&].*?$/', "\\1", truncate_utf8($item['DESCRIPTION'], 40));
Dries's avatar
 
Dries committed
850
    }
Dries's avatar
 
Dries committed
851

Dries's avatar
 
Dries committed
852 853 854 855
    /*
    ** Resolve the items link.
    */

Dries's avatar
 
Dries committed
856 857
    if ($item['LINK']) {
      $link = $item['LINK'];
Dries's avatar
 
Dries committed
858
    }
Dries's avatar
 
Dries committed
859 860
    elseif ($item['GUID'] && (strncmp($item['GUID'], 'http://', 7) == 0)) {
      $link = $item['GUID'];
Dries's avatar
 
Dries committed
861 862
    }
    else {
Dries's avatar
 
Dries committed
863
      $link = $feed['link'];
Dries's avatar
 
Dries committed
864
    }
865

866 867 868
    /**
     * Atom feeds have a CONTENT and/or SUMMARY tag instead of a DESCRIPTION tag
     */
869 870
    if ($item['CONTENT:ENCODED']) {
      $item['DESCRIPTION'] = $item['CONTENT:ENCODED'];
871 872 873 874 875
    }
    else if ($item['SUMMARY']) {
      $item['DESCRIPTION'] = $item['SUMMARY'];
    }

Dries's avatar
 
Dries committed
876
    /*
877
    ** Try to resolve and parse the item's publication date. If no
Dries's avatar
 
Dries committed
878 879 880 881 882 883 884 885
    ** date is found, we use the current date instead.
    */

    if ($item['PUBDATE']) $date = $item['PUBDATE'];                        // RSS 2.0
    else if ($item['DC:DATE']) $date = $item['DC:DATE'];                   // Dublin core
    else if ($item['DCTERMS:ISSUED']) $date = $item['DCTERMS:ISSUED'];     // Dublin core
    else if ($item['DCTERMS:CREATED']) $date = $item['DCTERMS:CREATED'];   // Dublin core
    else if ($item['DCTERMS:MODIFIED']) $date = $item['DCTERMS:MODIFIED']; // Dublin core
886 887 888
    else if ($item['ISSUED']) $date = $item['ISSUED'];                     // Atom XML
    else if ($item['CREATED']) $date = $item['CREATED'];                   // Atom XML
    else if ($item['MODIFIED']) $date = $item['MODIFIED'];                 // Atom XML
Dries's avatar
 
Dries committed
889
    else $date = 'now';
Dries's avatar
 
Dries committed
890

891 892 893 894
    $timestamp = strtotime($date); // As of PHP 5.1.0, strtotime returns FALSE on failure instead of -1.
    if ($timestamp <= 0) {
      $timestamp = aggregator_parse_w3cdtf($date); // Returns FALSE on failure
      if (!$timestamp) {
Dries's avatar
 
Dries committed
895 896
        $timestamp = time(); // better than nothing
      }
897
    }
Dries's avatar
 
Dries committed
898 899

    /*
900 901
    ** Save this item. Try to avoid duplicate entries as much as
    ** possible. If we find a duplicate entry, we resolve it and
Dries's avatar
 
Dries committed
902
    ** pass along it's ID such that we can update it if needed.
Dries's avatar
 
Dries committed
903 904
    */

Dries's avatar
 
Dries committed
905 906
    if ($link && $link != $feed['link'] && $link != $feed['url']) {
      $entry = db_fetch_object(db_query("SELECT iid FROM {aggregator_item} WHERE fid = %d AND link = '%s'", $feed['fid'], $link));
Dries's avatar
 
Dries committed
907 908
    }
    else {
Dries's avatar
 
Dries committed
909
      $entry = db_fetch_object(db_query("SELECT iid FROM {aggregator_item} WHERE fid = %d AND title = '%s'", $feed['fid'], $title));
Dries's avatar
 
Dries committed
910
    }
Dries's avatar
 
Dries committed
911

Dries's avatar
Dries committed
912
    aggregator_save_item(array('iid' => $entry->iid, 'fid' => $feed['fid'], 'timestamp' => $timestamp, 'title' => $title, 'link' => $link, 'author' => $item['AUTHOR'], 'description' => $item['DESCRIPTION']));
Dries's avatar
 
Dries committed
913
  }
Dries's avatar
 
Dries committed
914

Dries's avatar
 
Dries committed
915
  /*
916
  ** Remove all items that are older than flush item timer:
Dries's avatar
 
Dries committed
917
  */
Dries's avatar
 
Dries committed
918

919
  $age = time() - variable_get('aggregator_clear', 9676800);
Dries's avatar
 
Dries committed
920
  $result = db_query('SELECT iid FROM {aggregator_item} WHERE fid = %d AND timestamp < %d', $feed['fid'], $age);
Dries's avatar
 
Dries committed
921

922 923 924 925 926 927 928
  if (db_num_rows($result)) {
    $items = array();
    while ($item = db_fetch_object($result)) {
      $items[] = $item->iid;
    }
    db_query('DELETE FROM {aggregator_category_item} WHERE iid IN ('. implode(', ', $items) .')');
    db_query('DELETE FROM {aggregator_item} WHERE fid = %d AND timestamp < %d', $feed['fid'], $age);
Dries's avatar
 
Dries committed
929
  }
Dries's avatar
 
Dries committed
930 931

  return 1;
932 933
}

Kjartan's avatar
Kjartan committed
934
function aggregator_save_item($edit) {
Dries's avatar
 
Dries committed
935
  if ($edit['iid'] && $edit['title']) {
936
    db_query("UPDATE {aggregator_item} SET title = '%s', link = '%s', author = '%s', description = '%s' WHERE iid = %d", $edit['title'], $edit['link'], $edit['author'], $edit['description'], $edit['iid']);
937
  }
Dries's avatar
 
Dries committed
938 939 940
  else if ($edit['iid']) {
    db_query('DELETE FROM {aggregator_item} WHERE iid = %d', $edit['iid']);
    db_query('DELETE FROM {aggregator_category_item} WHERE iid = %d', $edit['iid']);
941
  }
Dries's avatar
 
Dries committed
942
  else if ($edit['title'] && $edit['link']) {
Dries's avatar
 
Dries committed
943
    $edit['iid'] = db_next_id('{aggregator_item}_iid');
944
    db_query("INSERT INTO {aggregator_item} (iid, fid, title, link, author, description, timestamp) VALUES (%d, %d, '%s', '%s', '%s', '%s', %d)", $edit['iid'], $edit['fid'], $edit['title'], $edit['link'], $edit['author'], $edit['description'], $edit['timestamp']);
Dries's avatar
 
Dries committed
945 946 947
    // file the items in the categories indicated by the feed
    $categories = db_query('SELECT cid FROM {aggregator_category_feed} WHERE fid = %d', $edit['fid']);
    while ($category = db_fetch_object($categories)) {
Dries's avatar
 
Dries committed
948
      db_query('INSERT INTO {aggregator_category_item} (cid, iid) VALUES (%d, %d)', $category->cid, $edit['iid']);
Dries's avatar
 
Dries committed
949
    }
950 951 952
  }
}

Kjartan's avatar
Kjartan committed
953
function aggregator_get_feed($fid) {
Dries's avatar
 
Dries committed
954
  return db_fetch_array(db_query('SELECT * FROM {aggregator_feed} WHERE fid = %d', $fid));
955 956
}

Dries's avatar
 
Dries committed
957
function aggregator_get_category($cid) {
Dries's avatar
 
Dries committed
958
  return db_fetch_array(db_query('SELECT * FROM {aggregator_category} WHERE cid = %d', $cid));
959 960
}

Kjartan's avatar
Kjartan committed
961
function aggregator_view() {
Dries's avatar
 
Dries committed
962
  $result = db_query('SELECT f.*, COUNT(i.iid) AS items FROM {aggregator_feed} f LEFT JOIN {aggregator_item} i ON f.fid = i.fid GROUP BY f.fid, f.title, f.url, f.refresh, f.checked, f.link, f.description, f.etag, f.modified, f.image, f.block ORDER BY f.title');
963

Dries's avatar
 
Dries committed
964
  $output .= '<h3>'. t('Feed overview') .'</h3>';
Dries's avatar
 
Dries committed
965

Dries's avatar
 
Dries committed
966
  $header = array(t('Title'), t('Items'), t('Last update'), t('Next update'), array('data' => t('Operations'), 'colspan' => '3'));
Dries's avatar
 
Dries committed
967
  $rows = array();
968
  while ($feed = db_fetch_object($result)) {
Dries's avatar
 
Dries committed
969
    $rows[] = array(l($feed->title, "aggregator/sources/$feed->fid"), format_plural($feed->items, '1 item', '%count items'), ($feed->checked ? t('%time ago', array('%time' => format_interval(time() - $feed->checked))) : t('never')), ($feed->checked ? t('%time left', array('%time' => format_interval($feed->checked + $feed->refresh - time()))) : t('never')), l(t('edit'), "admin/aggregator/edit/feed/$feed->fid"), l(t('remove items'), "admin/aggregator/remove/$feed->fid"), l(t('update items'), "admin/aggregator/update/$feed->fid"));
970
  }
Dries's avatar
 
Dries committed
971
  $output .= theme('table', $header, $rows);
972

Dries's avatar
 
Dries committed
973
  $result = db_query('SELECT c.cid, c.title, count(ci.iid) as items FROM {aggregator_category} c LEFT JOIN {aggregator_category_item} ci ON c.cid = ci.cid GROUP BY c.cid, c.title ORDER BY title');
974

Dries's avatar
 
Dries committed
975
  $output .= '<h3>'. t('Category overview') .'</h3>';
Dries's avatar
 
Dries committed
976

Dries's avatar
 
Dries committed
977
  $header = array(t('Title'), t('Items'), t('Operations'));
Dries's avatar
 
Dries committed
978
  $rows = array();
Dries's avatar
 
Dries committed
979
  while ($category = db_fetch_object($result)) {
Dries's avatar
 
Dries committed
980
    $rows[] = array(l($category->title, "aggregator/categories/$category->cid"), format_plural($category->items, '1 item', '%count items'), l(t('edit'), "admin/aggregator/edit/category/$category->cid"));
981
  }
Dries's avatar
 
Dries committed
982
  $output .= theme('table', $header, $rows);
983 984 985 986

  return $output;
}

Dries's avatar
 
Dries committed
987
/**
988
 * Menu callback; removes all items from a feed, then redirects to the overview page.
Dries's avatar
 
Dries committed
989 990 991
 */
function aggregator_admin_remove_feed($feed) {
  aggregator_remove(aggregator_get_feed($feed));
992
  drupal_goto('admin/aggregator');
Dries's avatar
 
Dries committed
993 994 995
}

/**
996
 * Menu callback; refreshes a feed, then redirects to the overview page.
Dries's avatar
 
Dries committed
997 998 999
 */
function aggregator_admin_refresh_feed($feed) {
  aggregator_refresh(aggregator_get_feed($feed));
1000
  drupal_goto('admin/aggregator');
Dries's avatar
 
Dries committed
1001 1002 1003
}

/**
Dries's avatar
Dries committed
1004
 * Menu callback; displays the aggregator administration page.
Dries's avatar
 
Dries committed
1005 1006
 */
function aggregator_admin_overview() {
Dries's avatar
 
Dries committed
1007
  return aggregator_view();
1008 1009
}

Dries's avatar
 
Dries committed
1010
/**
Dries's avatar
Dries committed
1011
 * Menu callback; displays the most recent items gathered from any feed.
Dries's avatar
 
Dries committed
1012
 */
1013
function aggregator_page_last() {
1014
  return _aggregator_page_list('SELECT i.*, f.title AS ftitle, f.link AS flink FROM {aggregator_item} i INNER JOIN {aggregator_feed} f ON i.fid = f.fid ORDER BY i.timestamp DESC, i.iid DESC', arg(1));
Dries's avatar
 
Dries committed
1015 1016
}

Dries's avatar
 
Dries committed
1017
/**
Dries's avatar
Dries committed
1018
 * Menu callback; displays all the items captured from a particular feed.
Dries's avatar
 
Dries committed
1019
 */
1020
function aggregator_page_source() {
Dries's avatar
 
Dries committed
1021
  $feed = db_fetch_object(db_query('SELECT * FROM {aggregator_feed} WHERE fid = %d', arg(2)));
Dries's avatar
 
Dries committed
1022
  $info = theme('aggregator_feed', $feed);
Dries's avatar
 
Dries committed
1023