aggregator.module 48.7 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 6 7 8
/**
 * @file
 * Used to aggregate syndicated content (RSS and RDF).
 */

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':
Dries's avatar
 
Dries committed
15
      return t('
Dries's avatar
 
Dries committed
16 17 18 19 20 21 22
      <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).</p>
      <p>You can read aggregated content from many sites using RSS feed readers, such as <a href="http://www.disobey.com/amphetadesk/">Amphetadesk</a>.</p>
      <p>Drupal provides the means to aggregate feeds from many sites and display these aggregated feeds to your site\'s visitors. To do this, enable the aggregator module in site administration and then go to the aggregator configuration page, where you can subscribe to feeds and set up other options.</p>
      <h3>How do I find RSS feeds to aggregate?</h3>
      <p>Many web sites (especially weblogs) display small XML icons or other obvious links on their home page. You can follow these to obtain the web address for the RSS feed. Common extensions for RSS feeds are .rss, .xml and .rdf. For example: <a href="http://slashdot.org/slashdot.rdf">Slashdot RSS</a>.</p>
      <p>If you can\'t find a feed for a site, or you want to find several feeds on a given topic, try an RSS syndication directory such as <a href="http://www.syndic8.com/">Syndic8</a>.</p>
      <p>To learn more about RSS, read Mark Pilgrim\'s <a href="http://www.xml.com/pub/a/2002/12/18/dive-into-xml.html">What is RSS</a> and WebReference.com\'s <a href="http://www.webreference.com/authoring/languages/xml/rss/1/">The Evolution of RSS</a> articles.</p>
Dries's avatar
 
Dries committed
23
      <p>NOTE: Enable your site\'s XML syndication button by turning on the Syndicate block in block management.</p>
Dries's avatar
 
Dries committed
24
      <h3>How do I add a news feed?</h3>
Dries's avatar
 
Dries committed
25 26
      <p>To subscribe to an RSS feed on another site, use the <a href="%admin-news">aggregation page</a>.</p>
      <p>Once there, click the <a href="%new-feed">new feed</a> tab.  Drupal will then ask for the following:</p>
Dries's avatar
 
Dries committed
27
      <ul>
Dries's avatar
 
Dries committed
28 29 30
       <li><strong>Title</strong> -- The text entered here will be used in your news aggregator, within the administration configuration section, and as a title for the news feed block. As a general rule, use the web site name from which the feed originates.</li>
       <li><strong>URL</strong> -- Here you\'ll enter the fully-qualified web address for the feed you wish to subscribe to.</li>
       <li><strong>Update interval</strong> -- This is how often Drupal will scan the feed for new content. This defaults to every hour. Checking a feed more frequently that this is typically a waste of bandwidth and is considered somewhat impolite. For automatic updates to work, cron.php must be called regularly. If it is not, you\'ll have to manually update the feeds one at a time within the news aggregation administration page by using <a href="%update-items">update items</a>.</li>
Dries's avatar
Dries committed
31
       <li><strong>Categorize news items</strong> -- As items are received from a feed they will be put in any categories you have selected here.</li>
Dries's avatar
 
Dries committed
32
      </ul>
Dries's avatar
 
Dries committed
33
      <p>Once you have submitted the new feed, check to make sure it is working properly by selecting <a href="%update-items">update items</a> on the <a href="%admin-news">aggregation page</a>. If you do not see any items listed for that feed, edit the feed and make sure that the URL was entered correctly.</p>
Dries's avatar
 
Dries committed
34
      <h3>Adding categories</h3>
Dries's avatar
 
Dries committed
35
      <p>News items can be filed into categories. To create a category, start at the <a href="%admin-news">aggregation page</a>.</p>
Dries's avatar
 
Dries committed
36
      <p>Once there, select <a href="%new-category">new category</a> from the menu. Drupal will then ask for the following:</p>
Dries's avatar
 
Dries committed
37
      <ul>
Dries's avatar
 
Dries committed
38
       <li><strong>Title</strong> -- The title will be used in the <em>news by topics</em> listing in your news aggregator and for the block created for the bundle.</li>
Dries's avatar
 
Dries committed
39
       <li><strong>Description</strong> -- A short description of the category to tell users more details about what news items they might find in the category.</li>
Dries's avatar
 
Dries committed
40 41 42 43
      </ul>
      <h3>Using the news aggregator</h3>
      <p>The news aggregator has a number of ways that it displays your subscribed content:</p>
      <ul>
Dries's avatar
 
Dries committed
44 45 46
       <li><strong><a href="%news-aggregator">News aggregator</a></strong> (latest news) -- Displays all incoming items in the order in which they were received.</li>
       <li><strong><a href="%sources">Sources</a></strong> -- Organizes incoming content by feed, displaying feed titles (each of which links to a page with the latest items from that feed) and item titles (which link to that item\'s actual story/article).</li>
       <li><strong><a href="%categories">Categories</a></strong> -- Organizes incoming content by category, displaying category titles (each of which links to a page with the latest items from that category) and item titles (which link to that item\'s actual story/article).</li>
Dries's avatar
 
Dries committed
47
      </ul>
Dries's avatar
 
Dries committed
48
      <p>Pages that display items (for sources, categories, etc.) display the following for each item:
Dries's avatar
 
Dries committed
49
      <ul>
Dries's avatar
 
Dries committed
50 51 52 53
       <li>The title of the item (its headline).</li>
       <li>The categories that the item belongs to, each of which links to that particular category page as detailed above.</li>
       <li>A description containing the first few paragraphs or a summary of the item (if available).</li>
       <li>The name of the feed, which links to the individual feed\'s page, listing information about that feed and items for that feed only. This is not shown on feed pages (they would link to the page you\'re currently on).</li>
Dries's avatar
 
Dries committed
54
      </ul>
Dries's avatar
 
Dries committed
55
      <p>Additionally, users with the <em>administer news feeds permission</em> will see a link to categorize the news items. Clicking this will allow them to select which category(s) each news item is in.</p>
Dries's avatar
 
Dries committed
56
      <h3>Technical details</h3>
Dries's avatar
 
Dries committed
57
      <p>Drupal automatically generates an OPML feed file that is available by selecting the XML icon on the News Sources page.</p>
Dries's avatar
 
Dries committed
58
      <p>When fetching feeds Drupal supports conditional GETs, this reduces the bandwidth usage for feeds that have not been updated since the last check.</p>
Dries's avatar
 
Dries committed
59 60
      <p>If a feed is permanently moved to a new location Drupal will automatically update the feed URL to the new address.</p>', array('%block' => url('admin/block'), '%admin-news' => url('admin/aggregator'), '%new-feed' => url('admin/aggregator/add/feed'), '%new-category' => url('admin/aggregator/add/category'), '%update-items' => url('admin/aggregator'), '%news-aggregator' => url('aggregator'), '%sources' => url('aggregator/sources'), '%categories' => url('aggregator/categories')));
    case 'admin/modules#description':
61
      return t('Aggregates syndicated content (RSS and RDF feeds).');
Dries's avatar
 
Dries committed
62
    case 'admin/aggregator':
63
      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
64
    case 'admin/aggregator/add/feed':
65
      return t('<p>Add a site that has an RSS/RDF feed. The URL is the full path to the RSS 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
66
    case 'admin/aggregator/add/category':
67
      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
68
  }
69 70
}

71
function aggregator_settings() {
72
  $items = array(0 => t('none')) + drupal_map_assoc(array(3, 5, 10, 15, 20, 25), '_aggregator_items');
73
  $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
74

75
  $output = '';
Dries's avatar
 
Dries committed
76
  $output .= form_select(t('Items shown in sources and categories pages'), 'aggregator_summary_items', variable_get('aggregator_summary_items', 3), $items, t('The number of items which will be shown with each feed or category in the feed and category summary pages.'));
77
   $output .= form_select(t('Discard news items older than'), 'aggregator_clear', variable_get('aggregator_clear', 9676800), $period, t('Older news items will be automatically discarded.  Requires crontab.'));
Dries's avatar
 
Dries committed
78
  $output .= form_radios(t('Category selection type'), 'aggregator_category_selector', variable_get('aggregator_category_selector', 'check'), array('check' => t('checkboxes'), 'select' => t('multiple selector')), 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.'));
79
  return $output;
Dries's avatar
 
Dries committed
80 81
}

82 83 84 85 86 87 88
/**
 * Helper function for drupal_map_assoc.
 */
function _aggregator_items($count) {
  return format_plural($count, '1 item', '%count items');
}

Dries's avatar
 
Dries committed
89 90 91
/**
 * Implementation of hook_perm().
 */
Kjartan's avatar
Kjartan committed
92
function aggregator_perm() {
Dries's avatar
 
Dries committed
93
  return array('administer news feeds', 'access news feeds');
Dries's avatar
 
Dries committed
94 95
}

Dries's avatar
 
Dries committed
96 97 98
/**
 * Implementation of hook_menu().
 */
Dries's avatar
 
Dries committed
99
function aggregator_menu($may_cache) {
Dries's avatar
 
Dries committed
100
  $items = array();
101 102
  $edit = user_access('administer news feeds');
  $view = user_access('access news feeds');
Dries's avatar
 
Dries committed
103

Dries's avatar
 
Dries committed
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
  if ($may_cache) {
    $items[] = array('path' => 'admin/aggregator', 'title' => t('aggregator'),
      'callback' => 'aggregator_admin_overview', 'access' => $edit);
    $items[] = array('path' => 'admin/aggregator/edit/feed', 'title' => t('edit feed'),
      'callback' => 'aggregator_admin_edit_feed', 'access' => $edit,
      'type' => MENU_CALLBACK);
    $items[] = array('path' => 'admin/aggregator/edit/category', 'title' => t('edit category'),
      'callback' => 'aggregator_admin_edit_category', 'access' => $edit,
      'type' => MENU_CALLBACK);
    $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);
    $items[] = array('path' => 'admin/aggregator/add/feed', 'title' => t('add feed'),
      'callback' => 'aggregator_admin_edit_feed', 'access' => $edit,
      'type' => MENU_LOCAL_TASK);
    $items[] = array('path' => 'admin/aggregator/add/category', 'title' => t('add category'),
      'callback' => 'aggregator_admin_edit_category', 'access' => $edit,
      'type' => MENU_LOCAL_TASK);

    $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/opml', 'title' => t('opml'),
      'callback' => 'aggregator_page_opml', 'access' => $view,
      'type' => MENU_CALLBACK);
  }
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
  else {
    if (arg(0) == 'aggregator' && is_numeric(arg(2))) {
      if (arg(1) == 'sources') {
        $feed = db_fetch_object(db_query('SELECT title, fid FROM {aggregator_feed} WHERE fid = %d', arg(2)));
        if ($feed) {
          $items[] = array('path' => 'aggregator/sources/'. $feed->fid, 'title' => $feed->title,
                           'callback' => 'aggregator_page_source', 'access' => $view);
          $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_edit', 'access' => $edit,
                           'type' => MENU_LOCAL_TASK,
                           'weight' => 1);
        }
      }
      else if (arg(1) == 'categories') {
        $category = db_fetch_object(db_query('SELECT title, cid FROM {aggregator_category} WHERE cid = %d', arg(2)));
        if ($category) {
          $items[] = array('path' => 'aggregator/categories/'. $category->cid, 'title' => $category->title,
                           'callback' => 'aggregator_page_category', 'access' => $view);
          $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_edit', 'access' => $edit,
                           'type' => MENU_LOCAL_TASK,
                           'weight' => 1);
        }
      }
    }
  }
Dries's avatar
 
Dries committed
178 179

  return $items;
180 181
}

Dries's avatar
 
Dries committed
182 183 184 185 186
/**
 * Implementation of hook_cron().
 *
 * Checks news feeds for updates once their refresh interval has elapsed.
 */
Dries's avatar
 
Dries committed
187
function aggregator_cron() {
Dries's avatar
 
Dries committed
188
  $result = db_query('SELECT * FROM {aggregator_feed} WHERE checked + refresh < %d', time());
Dries's avatar
 
Dries committed
189 190
  while ($feed = db_fetch_array($result)) {
    aggregator_refresh($feed);
Dries's avatar
 
Dries committed
191 192 193
  }
}

Dries's avatar
 
Dries committed
194 195 196 197 198
/**
 * Implementation of hook_block().
 *
 * Generates blocks for the latest news items in each category and feed.
 */
Dries's avatar
Dries committed
199
function aggregator_block($op, $delta = 0, $edit = array()) {
Dries's avatar
 
Dries committed
200
  if (user_access('access news feeds')) {
Dries's avatar
 
Dries committed
201
    if ($op == 'list') {
Dries's avatar
Dries committed
202
      $result = db_query('SELECT cid, title FROM {aggregator_category} ORDER BY title');
Dries's avatar
 
Dries committed
203
      while ($category = db_fetch_object($result)) {
204
        $block['category:'. $category->cid]['info'] = t('%title category latest items', array('%title' => theme('placeholder', $category->title)));
Kjartan's avatar
Kjartan committed
205
      }
Dries's avatar
Dries committed
206
      $result = db_query('SELECT fid, title FROM {aggregator_feed} ORDER BY fid');
Kjartan's avatar
Kjartan committed
207
      while ($feed = db_fetch_object($result)) {
208
        $block['feed:'. $feed->fid]['info'] = t('%title feed latest items', array('%title' => theme('placeholder', $feed->title)));
Kjartan's avatar
Kjartan committed
209
      }
Dries's avatar
 
Dries committed
210
    }
Dries's avatar
Dries committed
211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231
    else if ($op == 'configure') {
      list($type, $id) = split(':', $delta);
      if ($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));
      }

      $output = form_select(t('Number of news items in block'), 'block', $value, drupal_map_assoc(array(2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)));
      return $output;
    }
    else if ($op == 'save') {
      list($type, $id) = split(':', $delta);
      if ($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'], $id);
      }
    }
232
    else if ($op == 'view') {
Dries's avatar
 
Dries committed
233
      list($type, $id) = split(':', $delta);
Kjartan's avatar
Kjartan committed
234
      switch ($type) {
Dries's avatar
 
Dries committed
235
        case 'feed':
236
          if ($feed = db_fetch_object(db_query('SELECT fid, title, block FROM {aggregator_feed} WHERE fid = %d', $id))) {
237
            $block['subject'] = check_plain($feed->title);
238 239 240
            $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
241
          break;
242

Dries's avatar
 
Dries committed
243
        case 'category':
244
          if ($category = db_fetch_object(db_query('SELECT cid, title, block FROM {aggregator_category} WHERE cid = %d', $id))) {
245
            $block['subject'] = check_plain($category->title);
246 247 248
            $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
249 250
          break;
      }
Dries's avatar
 
Dries committed
251 252
      $items = array();
      while ($item = db_fetch_object($result)) {
Dries's avatar
 
Dries committed
253
        $items[] = theme('aggregator_block_item', $item);
Dries's avatar
 
Dries committed
254
      }
Dries's avatar
 
Dries committed
255
      $block['content'] = theme('item_list', $items) . $block['content'];
Dries's avatar
 
Dries committed
256
    }
Dries's avatar
 
Dries committed
257
    return $block;
Dries's avatar
 
Dries committed
258
  }
Dries's avatar
 
Dries committed
259 260
}

Dries's avatar
 
Dries committed
261 262 263 264
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
265
  }
Dries's avatar
 
Dries committed
266 267
  if ($items) {
    db_query('DELETE FROM {aggregator_category_item} WHERE '. implode(' OR ', $items));
Dries's avatar
 
Dries committed
268
  }
Dries's avatar
 
Dries committed
269
  db_query('DELETE FROM {aggregator_item} WHERE fid = %d', $feed['fid']);
Kjartan's avatar
Kjartan committed
270
  db_query("UPDATE {aggregator_feed} SET checked = 0, etag = '', modified = 0 WHERE fid = %d", $feed['fid']);
271
  drupal_set_message(t('Removed news items from %site.', array('%site' => theme('placeholder', $feed['title']))));
Dries's avatar
 
Dries committed
272 273
}

Dries's avatar
 
Dries committed
274 275 276
/**
 * Call-back function used by the XML parser.
 */
Kjartan's avatar
Kjartan committed
277
function aggregator_element_start($parser, $name, $attributes) {
Dries's avatar
 
Dries committed
278 279 280
  global $item, $element, $tag;

  switch ($name) {
Dries's avatar
 
Dries committed
281 282
    case 'IMAGE':
    case 'TEXTINPUT':
Dries's avatar
 
Dries committed
283 284
      $element = $name;
      break;
Dries's avatar
 
Dries committed
285
    case 'ITEM':
Dries's avatar
 
Dries committed
286 287
      $element = $name;
      $item += 1;
288 289 290 291 292
  }

  $tag = $name;
}

Dries's avatar
 
Dries committed
293 294 295
/**
 * Call-back function used by the XML parser.
 */
Kjartan's avatar
Kjartan committed
296
function aggregator_element_end($parser, $name) {
Dries's avatar
 
Dries committed
297 298
  global $element;

Dries's avatar
 
Dries committed
299
  switch ($name) {
Dries's avatar
 
Dries committed
300 301 302 303
    case 'IMAGE':
    case 'TEXTINPUT':
    case 'ITEM':
      $element = '';
Dries's avatar
 
Dries committed
304
  }
305 306
}

Dries's avatar
 
Dries committed
307 308 309
/**
 * Call-back function used by the XML parser.
 */
Kjartan's avatar
Kjartan committed
310
function aggregator_element_data($parser, $data) {
Dries's avatar
 
Dries committed
311
  global $channel, $element, $items, $item, $image, $tag;
Dries's avatar
 
Dries committed
312 313

  switch ($element) {
Dries's avatar
 
Dries committed
314
    case 'ITEM':
Dries's avatar
 
Dries committed
315 316
      $items[$item][$tag] .= $data;
      break;
Dries's avatar
 
Dries committed
317
    case 'IMAGE':
Dries's avatar
 
Dries committed
318 319
      $image[$tag] .= $data;
      break;
Dries's avatar
 
Dries committed
320 321 322
    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
323 324 325
      break;
    default:
      $channel[$tag] .= $data;
326 327 328
  }
}

Dries's avatar
 
Dries committed
329 330 331
/**
 * Checks a news feed for new items.
 */
Kjartan's avatar
Kjartan committed
332
function aggregator_refresh($feed) {
Dries's avatar
 
Dries committed
333 334
  global $channel, $image;

Dries's avatar
 
Dries committed
335 336 337 338 339 340
  // Generate conditional GET headers.
  $headers = array();
  if ($feed['etag']) {
    $headers['If-None-Match'] = $feed['etag'];
  }
  if ($feed['modified']) {
Dries's avatar
 
Dries committed
341
    $headers['If-Modified-Since'] = gmdate('D, d M Y H:i:s', $feed['modified']) .' GMT';
Dries's avatar
 
Dries committed
342 343 344 345 346
  }

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

347
  // Process HTTP response code.
Dries's avatar
 
Dries committed
348 349
  switch ($result->code) {
    case 304:
Dries's avatar
 
Dries committed
350
      db_query('UPDATE {aggregator_feed} SET checked = %d WHERE fid = %d', time(), $feed['fid']);
351
      drupal_set_message(t('No new syndicated content from %site.', array('%site' => theme('placeholder', $feed['title']))));
Dries's avatar
 
Dries committed
352
      break;
Dries's avatar
 
Dries committed
353 354
    case 301:
      $feed['url'] = $result->redirect_url;
355
      watchdog('aggregator', t('Updated URL for feed %title to %url.', array('%title' => theme('placeholder', $feed['title']), '%url' => theme('placeholder', $feed['url']))));
356 357
      break;

Dries's avatar
 
Dries committed
358 359 360 361
    case 200:
    case 302:
    case 307:
      // Filter the input data:
362
     if (aggregator_parse_feed($result->data, $feed)) {
363

Dries's avatar
 
Dries committed
364 365 366
        if ($result->headers['Last-Modified']) {
          $modified = strtotime($result->headers['Last-Modified']);
        }
Dries's avatar
Dries committed
367

368 369 370 371 372 373 374 375
        /*
        ** Prepare the channel data:
        */

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

Dries's avatar
 
Dries committed
376 377 378
        /*
        ** Prepare the image data (if any):
        */
Dries's avatar
 
Dries committed
379

Dries's avatar
 
Dries committed
380 381 382
        foreach ($image as $key => $value) {
          $image[$key] = trim($value);
        }
Dries's avatar
 
Dries committed
383

Dries's avatar
 
Dries committed
384
        if ($image['LINK'] && $image['URL'] && $image['TITLE']) {
Dries's avatar
 
Dries committed
385
          $image = '<a href="'. $image['LINK'] .'"><img src="'. $image['URL'] .'" alt="'. $image['TITLE'] .'" /></a>';
Dries's avatar
 
Dries committed
386
        }
Dries's avatar
 
Dries committed
387 388 389
        else {
          $image = NULL;
        }
Dries's avatar
 
Dries committed
390

Dries's avatar
 
Dries committed
391 392 393
        /*
        ** Update the feed data:
        */
Dries's avatar
 
Dries committed
394

395
        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
396

Dries's avatar
 
Dries committed
397 398 399
        /*
        ** Clear the cache:
        */
Dries's avatar
 
Dries committed
400

Dries's avatar
 
Dries committed
401
        cache_clear_all();
Dries's avatar
 
Dries committed
402

403
        $message = t('Syndicated content from %site.', array('%site' => theme('placeholder', $feed[title])));
404 405
        watchdog('aggregator', $message);
        drupal_set_message($message);
Dries's avatar
 
Dries committed
406 407
      }
      break;
Dries's avatar
 
Dries committed
408
    default:
409
      $message = t('Failed to parse RSS feed %site: %error.', array('%site' => theme('placeholder', $feed['title']), '%error' => theme('placeholder', $result->code .' '. $result->error)));
410 411
      watchdog('aggregator', $message, WATCHDOG_WARNING);
      drupal_set_message($message);
Dries's avatar
 
Dries committed
412
  }
Dries's avatar
 
Dries committed
413
}
Dries's avatar
 
Dries committed
414

Dries's avatar
 
Dries committed
415 416 417 418
/**
 * 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.
419
 * Originally from MagpieRSS (http://magpierss.sourceforge.net/).
Dries's avatar
 
Dries committed
420 421
 *
 * @param $date_str A string with a potentially W3C DTF date.
422
 * @return A timestamp if parsed successfully or -1 if not.
Dries's avatar
 
Dries committed
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
 */
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 {
    return -1;
  }
}

Dries's avatar
 
Dries committed
452
function aggregator_parse_feed(&$data, $feed) {
Dries's avatar
 
Dries committed
453
  global $items, $image, $channel;
Dries's avatar
 
Dries committed
454

Dries's avatar
 
Dries committed
455
  // Unset the global variables before we use them:
Dries's avatar
 
Dries committed
456
  unset($GLOBALS['element'], $GLOBALS['item'], $GLOBALS['tag']);
Dries's avatar
 
Dries committed
457
  $items = array();
Dries's avatar
 
Dries committed
458
  $image = array();
Dries's avatar
 
Dries committed
459
  $channel = array();
460

Dries's avatar
 
Dries committed
461 462
  // parse the data:
  $xml_parser = drupal_xml_parser_create($data);
Dries's avatar
 
Dries committed
463 464
  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
465

Dries's avatar
 
Dries committed
466
  if (!xml_parse($xml_parser, $data, 1)) {
467
    $message = t('Failed to parse RSS feed %site: %error at 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)));
468 469
    watchdog('aggregator', $message, WATCHDOG_WARNING);
    drupal_set_message($message, 'error');
Dries's avatar
 
Dries committed
470
    return 0;
Dries's avatar
 
Dries committed
471 472
  }
  xml_parser_free($xml_parser);
Dries's avatar
 
Dries committed
473

Dries's avatar
 
Dries committed
474 475 476 477 478
  /*
  ** We reverse the array such that we store the first item last,
  ** and the last item first.  In the database, the newest item
  ** should be at the top.
  */
Dries's avatar
 
Dries committed
479

Dries's avatar
 
Dries committed
480
  $items = array_reverse($items);
Dries's avatar
 
Dries committed
481

Dries's avatar
 
Dries committed
482 483
  foreach ($items as $item) {
    unset($title, $link, $author, $description);
484

Dries's avatar
 
Dries committed
485 486
    // Prepare the item:
    foreach ($item as $key => $value) {
487
      // TODO: Make handling of aggregated HTML more flexible/configurable.
488
      $value = decode_entities(trim($value));
489 490 491 492
      $value = strip_tags($value, '<a> <b> <br> <dd> <dl> <dt> <em> <i> <li> <ol> <p> <strong> <u> <ul>');
      $value = preg_replace('/\Wstyle\s*=[^>]+?>/i', '>', $value);
      $value = preg_replace('/\Won[a-z]+\s*=[^>]+?>/i', '>', $value);
      $item[$key] = $value;
Dries's avatar
 
Dries committed
493
    }
Dries's avatar
Dries committed
494

Dries's avatar
 
Dries committed
495 496 497 498 499 500
    /*
    ** Resolve the item's title.  If no title is found, we use
    ** up to 40 characters of the description ending at a word
    ** boundary but not splitting potential entities.
    */

Dries's avatar
 
Dries committed
501 502
    if ($item['TITLE']) {
      $title = $item['TITLE'];
Dries's avatar
 
Dries committed
503 504
    }
    else {
Dries's avatar
 
Dries committed
505
      $title = preg_replace('/^(.*)[^\w;&].*?$/', "\\1", truncate_utf8($item['DESCRIPTION'], 40));
Dries's avatar
 
Dries committed
506
    }
Dries's avatar
 
Dries committed
507

Dries's avatar
 
Dries committed
508 509 510 511
    /*
    ** Resolve the items link.
    */

Dries's avatar
 
Dries committed
512 513
    if ($item['LINK']) {
      $link = $item['LINK'];
Dries's avatar
 
Dries committed
514
    }
Dries's avatar
 
Dries committed
515 516
    elseif ($item['GUID'] && (strncmp($item['GUID'], 'http://', 7) == 0)) {
      $link = $item['GUID'];
Dries's avatar
 
Dries committed
517 518
    }
    else {
Dries's avatar
 
Dries committed
519
      $link = $feed['link'];
Dries's avatar
 
Dries committed
520
    }
521

Dries's avatar
 
Dries committed
522 523 524 525 526 527 528 529 530 531
    /*
    ** Try to resolve and parse the item's publication date.  If no
    ** 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
Dries's avatar
 
Dries committed
532
    else $date = 'now';
Dries's avatar
 
Dries committed
533

Dries's avatar
 
Dries committed
534
    $timestamp = strtotime($date); // strtotime() returns -1 on failure
Dries's avatar
 
Dries committed
535
    if ($timestamp < 0) {
Dries's avatar
 
Dries committed
536 537 538 539
      $timestamp = aggregator_parse_w3cdtf($date); // also returns -1 on failure
      if ($timestamp < 0) {
        $timestamp = time(); // better than nothing
      }
540
    }
Dries's avatar
 
Dries committed
541 542

    /*
Dries's avatar
 
Dries committed
543 544 545
    ** Save this item.  Try to avoid duplicate entries as much as
    ** possible.  If we find a duplicate entry, we resolve it and
    ** pass along it's ID such that we can update it if needed.
Dries's avatar
 
Dries committed
546 547
    */

Dries's avatar
 
Dries committed
548 549
    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
550 551
    }
    else {
Dries's avatar
 
Dries committed
552
      $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
553
    }
Dries's avatar
 
Dries committed
554

555
    if (!valid_input_data($item['DESCRIPTION'])) {
556
      drupal_set_message(t('Failed to parse entry from %site feed: suspicious input data.', array('%site' => theme('placeholder', $feed['title']))), 'error');
557 558 559 560
    }
    else {
      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
561
  }
Dries's avatar
 
Dries committed
562

Dries's avatar
 
Dries committed
563
  /*
564
  ** Remove all items that are older than flush item timer:
Dries's avatar
 
Dries committed
565
  */
Dries's avatar
 
Dries committed
566

567
  $age = time() - variable_get('aggregator_clear', 9676800);
Dries's avatar
 
Dries committed
568
  $result = db_query('SELECT iid FROM {aggregator_item} WHERE fid = %d AND timestamp < %d', $feed['fid'], $age);
Dries's avatar
 
Dries committed
569

570 571 572 573 574 575 576
  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
577
  }
Dries's avatar
 
Dries committed
578 579

  return 1;
580 581
}

Kjartan's avatar
Kjartan committed
582
function aggregator_save_item($edit) {
Dries's avatar
 
Dries committed
583
  if ($edit['iid'] && $edit['title']) {
Dries's avatar
 
Dries committed
584
    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']);
585
  }
Dries's avatar
 
Dries committed
586 587 588
  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']);
589
  }
Dries's avatar
 
Dries committed
590
  else if ($edit['title'] && $edit['link']) {
Dries's avatar
 
Dries committed
591 592
    $edit['iid'] = db_next_id('{aggregator_item}_iid');
    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
593 594 595
    // 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
596
      db_query('INSERT INTO {aggregator_category_item} (cid, iid) VALUES (%d, %d)', $category->cid, $edit['iid']);
Dries's avatar
 
Dries committed
597
    }
598 599 600
  }
}

Dries's avatar
 
Dries committed
601 602 603 604
function aggregator_form_category($edit = array()) {
  $form = form_textfield(t('Title'), 'title', $edit['title'], 50, 64);
  $form .= form_textarea(t('Description'), 'description', $edit['description'], 60, 5);
  $form .= form_submit(t('Submit'));
605

Dries's avatar
 
Dries committed
606 607 608
  if ($edit['cid']) {
    $form .= form_submit(t('Delete'));
    $form .= form_hidden('cid', $edit['cid']);
609 610
  }

Dries's avatar
 
Dries committed
611
  return form($form);
612 613
}

Dries's avatar
 
Dries committed
614 615
function aggregator_save_category($edit) {
  if ($edit['cid'] && $edit['title']) {
Dries's avatar
Dries committed
616
    db_query('UPDATE {aggregator_category} SET title = \'%s\', description = \'%s\' WHERE cid = %d', $edit['title'], $edit['description'], $edit['cid']);
617
  }
Dries's avatar
 
Dries committed
618 619
  else if ($edit['cid']) {
    db_query('DELETE FROM {aggregator_category} WHERE cid = %d', $edit['cid']);
620
  }
Dries's avatar
 
Dries committed
621
  else if ($edit['title']) {
Dries's avatar
 
Dries committed
622
    // a single unique id for bundles and feeds, to use in blocks
Dries's avatar
 
Dries committed
623
    $next_id = db_next_id('{aggregator_category}_cid');
Dries's avatar
Dries committed
624
    db_query('INSERT INTO {aggregator_category} (cid, title, description, block) VALUES (%d, \'%s\', \'%s\', 5)', $next_id, $edit['title'], $edit['description']);
625 626 627
  }
}

Kjartan's avatar
Kjartan committed
628
function aggregator_form_feed($edit = array()) {
Dries's avatar
 
Dries committed
629
  $period = drupal_map_assoc(array(900, 1800, 3600, 7200, 10800, 21600, 32400, 43200, 64800, 86400, 172800, 259200, 604800, 1209600, 2419200), 'format_interval');
630

Dries's avatar
 
Dries committed
631 632
  if ($edit['refresh'] == '') {
    $edit['refresh'] = 3600;
Dries's avatar
 
Dries committed
633
  }
Dries's avatar
 
Dries committed
634

Dries's avatar
 
Dries committed
635
  $form .= form_textfield(t('Title'), 'title', $edit['title'], 50, 64, t('The name of the feed; typically the name of the web site you syndicate content from.'));
636
  $form .= form_textfield(t('URL'), 'url', $edit['url'], 50, 255, t('The fully-qualified URL of the feed.'));
Dries's avatar
 
Dries committed
637
  $form .= form_select(t('Update interval'), 'refresh', $edit['refresh'], $period, t('The refresh interval indicating how often you want to update this feed.  Requires crontab.'));
Dries's avatar
Dries committed
638 639 640 641

  // Handling of categories:
  $options = array();
  $values = array();
Dries's avatar
 
Dries committed
642
  $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']);
Dries's avatar
 
Dries committed
643
  while ($category = db_fetch_object($categories)) {
Dries's avatar
Dries committed
644
    $options[$category->cid] = $category->title;
645
    if ($category->fid) $values[] = check_plain($category->cid);
Dries's avatar
 
Dries committed
646
  }
Dries's avatar
Dries committed
647 648
  if ($options) {
    $form .= form_checkboxes(t('Categorize news items'), 'category', $values, $options, t('New items in this feed will be automatically filed in the the checked categories as they are received.'));
Dries's avatar
 
Dries committed
649
  }
Dries's avatar
 
Dries committed
650

Dries's avatar
Dries committed
651
  // Form buttons:
Dries's avatar
 
Dries committed
652 653 654 655
  $form .= form_submit(t('Submit'));
  if ($edit['fid']) {
    $form .= form_submit(t('Delete'));
    $form .= form_hidden('fid', $edit['fid']);
656 657
  }

Dries's avatar
 
Dries committed
658
  return form($form);
659 660
}

Kjartan's avatar
Kjartan committed
661
function aggregator_save_feed($edit) {
Dries's avatar
 
Dries committed
662
  if ($edit['fid']) {
663
    // an existing feed is being modified, delete the category listings
Dries's avatar
 
Dries committed
664
    db_query('DELETE FROM {aggregator_category_feed} WHERE fid = %d', $edit['fid']);
665
  }
Dries's avatar
 
Dries committed
666
  if ($edit['fid'] && $edit['title']) {
Dries's avatar
Dries committed
667
    db_query('UPDATE {aggregator_feed} SET title = \'%s\', url = \'%s\', refresh = %d WHERE fid = %d', $edit['title'], $edit['url'], $edit['refresh'], $edit['fid']);
668
  }
Dries's avatar
 
Dries committed
669 670 671 672 673 674 675 676 677 678
  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']);
679
  }
Dries's avatar
 
Dries committed
680 681 682
  else if ($edit['title']) {
    // a single unique id for bundles and feeds, to use in blocks
    $edit['fid'] = db_next_id('{aggregator_feed}_fid');
Dries's avatar
Dries committed
683
    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']);
Dries's avatar
 
Dries committed
684 685 686
  }
  if ($edit['title']) {
    // the feed is being saved, save the categories as well
Dries's avatar
Dries committed
687
    if ($edit['category']) {
Dries's avatar
Dries committed
688 689
      foreach ($edit['category'] as $cid) {
        db_query('INSERT INTO {aggregator_category_feed} (fid, cid) VALUES (%d, %d)', $edit['fid'], $cid);
Dries's avatar
 
Dries committed
690 691
      }
    }
692 693 694
  }
}

Kjartan's avatar
Kjartan committed
695
function aggregator_get_feed($fid) {
Dries's avatar
 
Dries committed
696
  return db_fetch_array(db_query('SELECT * FROM {aggregator_feed} WHERE fid = %d', $fid));
697 698
}

Dries's avatar
 
Dries committed
699
function aggregator_get_category($cid) {
Dries's avatar
 
Dries committed
700
  return db_fetch_array(db_query('SELECT * FROM {aggregator_category} WHERE cid = %d', $cid));
701 702
}

Kjartan's avatar
Kjartan committed
703
function aggregator_view() {
Dries's avatar
 
Dries committed
704
  $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');
705

Dries's avatar
 
Dries committed
706
  $output .= '<h3>'. t('Feed overview') .'</h3>';
Dries's avatar
 
Dries committed
707

Dries's avatar
 
Dries committed
708
  $header = array(t('Title'), t('Items'), t('Last update'), t('Next update'), array('data' => t('Operations'), 'colspan' => '3'));
Dries's avatar
 
Dries committed
709
  $rows = array();
710
  while ($feed = db_fetch_object($result)) {
Dries's avatar
 
Dries committed
711
    $rows[] = array(l($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"));
712
  }
Dries's avatar
 
Dries committed
713
  $output .= theme('table', $header, $rows);
714

Dries's avatar
 
Dries committed
715
  $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');
716

Dries's avatar
 
Dries committed
717
  $output .= '<h3>'. t('Category overview') .'</h3>';
Dries's avatar
 
Dries committed
718

Dries's avatar
 
Dries committed
719
  $header = array(t('Title'), t('Items'), t('Operations'));
Dries's avatar
 
Dries committed
720
  $rows = array();
Dries's avatar
 
Dries committed
721
  while ($category = db_fetch_object($result)) {
Dries's avatar
 
Dries committed
722
    $rows[] = array(l($category->title, "aggregator/categories/$category->cid"), format_plural($category->items, '1 item', '%count items'), l(t('edit'), "admin/aggregator/edit/category/$category->cid"));
723
  }
Dries's avatar
 
Dries committed
724
  $output .= theme('table', $header, $rows);
725 726 727 728

  return $output;
}

Dries's avatar
 
Dries committed
729 730 731 732 733 734 735 736 737 738 739
function aggregator_edit() {

  if ($_POST['op'] == t('Submit')) {
    if (arg(1) == 'categories') {
      aggregator_save_category($_POST['edit']);
      drupal_set_message(t('The category has been updated.'));
    }
    else {
      aggregator_save_feed($_POST['edit']);
      drupal_set_message(t('The feed has been updated.'));
    }
740

741
    menu_rebuild();
742
    drupal_goto($_GET['q']);
Dries's avatar
 
Dries committed
743 744 745 746 747 748 749 750 751 752 753 754 755 756
  }
  else if ($_POST['op'] == t('Delete')) {
    // Unset the title:
    unset($_POST['edit']['title']);

    if (arg(1) == 'categories') {
      aggregator_save_category($_POST['edit']);
      drupal_set_message(t('The category has been deleted.'));
    }
    else {
      aggregator_save_feed($_POST['edit']);
      drupal_set_message(t('The feed has been deleted.'));
    }

757
    menu_rebuild();
758
    drupal_goto('aggregator/'. arg(1));
Dries's avatar
 
Dries committed
759 760 761 762 763 764 765 766 767
  }

  if (arg(1) == 'categories') {
    $output = aggregator_form_category(aggregator_get_category(arg(2)));
  }
  else {
    $output = aggregator_form_feed(aggregator_get_feed(arg(2)));
  }

Dries's avatar
 
Dries committed
768
  return $output;
Dries's avatar
 
Dries committed
769 770 771
}


Dries's avatar
 
Dries committed
772
/**
Dries's avatar
Dries committed
773
 * Menu callback; displays the category edit form, or saves changes and
774
 * redirects to the overview page.
Dries's avatar
 
Dries committed
775 776 777 778 779 780 781 782 783 784 785
 */
function aggregator_admin_edit_category($category = 0) {
  $edit = $_POST['edit'];
  $op = $_POST['op'];

  switch ($op) {
    case t('Delete'):
      $edit['title'] = 0;
      // Fall through:
    case t('Submit'):
      aggregator_save_category($edit);
786
      drupal_set_message($edit['title'] ? t('The category has been updated.') : t('The category has been deleted.'));
787
      menu_rebuild();
788 789
      drupal_goto('admin/aggregator');
      break;
Dries's avatar
 
Dries committed
790 791 792
    default:
      if ($category) {
        $output = aggregator_form_category(aggregator_get_category($category));
Dries's avatar
 
Dries committed
793 794
      }
      else {
Dries's avatar
 
Dries committed
795
        $output = aggregator_form_category();
Dries's avatar
 
Dries committed
796
      }
Dries's avatar
 
Dries committed
797
  }
Dries's avatar
 
Dries committed
798
  return $output;
Dries's avatar
 
Dries committed
799 800 801
}

/**
Dries's avatar
Dries committed
802 803
 * Menu callback; displays the feed edit form.
 *
804
 * After editing, saves changes and redirects to the overview page.
Dries's avatar
 
Dries committed
805 806 807 808 809 810 811 812 813 814 815
 */
function aggregator_admin_edit_feed($feed = 0) {
  $edit = $_POST['edit'];
  $op = $_POST['op'];

  switch ($op) {
    case t('Delete'):
      $edit['title'] = 0;
      // Fall through:
    case t('Submit'):
      aggregator_save_feed($edit);
816
      drupal_set_message($edit['title'] ? t('The feed has been updated.') : t('The feed has been deleted.'));
817
      menu_rebuild();
818 819
      drupal_goto('admin/aggregator');
      break;
Dries's avatar
 
Dries committed
820 821 822
    default:
      if ($feed) {
        $output = aggregator_form_feed(aggregator_get_feed($feed));