| 1 |
<?php |
| 2 |
# class SyndicatedLink: represents a syndication feed stored within the |
| 3 |
# WordPress database |
| 4 |
# |
| 5 |
# To keep things compact and editable from within WordPress, we use all the |
| 6 |
# links under a particular category in the WordPress "Blogroll" for the list of |
| 7 |
# feeds to syndicate. "Contributors" is the category used by default; you can |
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# configure that under Options --> Syndication. |
| 9 |
# |
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# Fields used are: |
| 11 |
# |
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# * link_rss: the URI of the Atom/RSS feed to syndicate |
| 13 |
# |
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# * link_notes: user-configurable options, with keys and values |
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# like so: |
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# |
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# key: value |
| 18 |
# cats: computers\nweb |
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# feed/key: value |
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# |
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# Keys that start with "feed/" are gleaned from the data supplied |
| 22 |
# by the feed itself, and will be overwritten with each update. |
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# |
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# Values have linebreak characters escaped with C-style |
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# backslashes (so, for example, a newline becomes "\n"). |
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# |
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# The value of `cats` is used as a newline-separated list of |
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# default categories for any post coming from a particular feed. |
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# (In the example above, any posts from this feed will be placed |
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# in the "computers" and "web" categories--*in addition to* any |
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# categories that may already be applied to the posts.) |
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# |
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# Values of keys in link_notes are accessible from templates using |
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# the function `get_feed_meta($key)` if this plugin is activated. |
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|
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class SyndicatedLink { |
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var $id = null; |
| 38 |
var $link = null; |
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var $settings = array (); |
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var $magpie = null; |
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|
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function SyndicatedLink ($link) { |
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global $wpdb; |
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|
| 45 |
if (is_object($link)) : |
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$this->link = $link; |
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$this->id = $link->link_id; |
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else : |
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$this->id = $link; |
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if (function_exists('get_bookmark')) : // WP 2.1+ |
| 51 |
$this->link = get_bookmark($link); |
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else : |
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$this->link = $wpdb->get_row(" |
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SELECT * FROM $wpdb->links |
| 55 |
WHERE (link_id = '".$wpdb->escape($link)."')" |
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); |
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endif; |
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endif; |
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|
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if (strlen($this->link->link_rss) > 0) : |
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// Read off feed settings from link_notes |
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$notes = explode("\n", $this->link->link_notes); |
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foreach ($notes as $note): |
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$pair = explode(": ", $note, 2); |
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$key = (isset($pair[0]) ? $pair[0] : null); |
| 66 |
$value = (isset($pair[1]) ? $pair[1] : null); |
| 67 |
if (!is_null($key) and !is_null($value)) : |
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// Unescape and trim() off the whitespace. |
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// Thanks to Ray Lischner for pointing out the |
| 70 |
// need to trim off whitespace. |
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$this->settings[$key] = stripcslashes (trim($value)); |
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endif; |
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endforeach; |
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|
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// "Magic" feed settings |
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$this->settings['link/uri'] = $this->link->link_rss; |
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$this->settings['link/name'] = $this->link->link_name; |
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$this->settings['link/id'] = $this->link->link_id; |
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|
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// `hardcode categories` and `unfamiliar categories` are deprecated in favor of `unfamiliar category` |
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if ( |
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isset($this->settings['unfamiliar categories']) |
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and !isset($this->settings['unfamiliar category']) |
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) : |
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$this->settings['unfamiliar category'] = $this->settings['unfamiliar categories']; |
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endif; |
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if ( |
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FeedWordPress::affirmative($this->settings, 'hardcode categories') |
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and !isset($this->settings['unfamiliar category']) |
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) : |
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$this->settings['unfamiliar category'] = 'default'; |
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endif; |
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|
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// Set this up automagically for del.icio.us |
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$bits = parse_url($this->link->link_rss); |
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$tagspacers = array('del.icio.us', 'feeds.delicious.com'); |
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if (!isset($this->settings['cat_split']) and in_array($bits['host'], $tagspacers)) : |
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$this->settings['cat_split'] = '\s'; // Whitespace separates multiple tags in del.icio.us RSS feeds |
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endif; |
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|
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if (isset($this->settings['cats'])): |
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$this->settings['cats'] = preg_split(FEEDWORDPRESS_CAT_SEPARATOR_PATTERN, $this->settings['cats']); |
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endif; |
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if (isset($this->settings['tags'])): |
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$this->settings['tags'] = preg_split(FEEDWORDPRESS_CAT_SEPARATOR_PATTERN, $this->settings['tags']); |
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endif; |
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|
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if (isset($this->settings['map authors'])) : |
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$author_rules = explode("\n\n", $this->settings['map authors']); |
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$ma = array(); |
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foreach ($author_rules as $rule) : |
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list($rule_type, $author_name, $author_action) = explode("\n", $rule); |
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|
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// Normalize for case and whitespace |
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$rule_type = strtolower(trim($rule_type)); |
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$author_name = strtolower(trim($author_name)); |
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$author_action = strtolower(trim($author_action)); |
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|
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$ma[$rule_type][$author_name] = $author_action; |
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endforeach; |
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$this->settings['map authors'] = $ma; |
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endif; |
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endif; |
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} /* SyndicatedLink::SyndicatedLink () */ |
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|
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function found () { |
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return is_object($this->link); |
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} /* SyndicatedLink::found () */ |
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|
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function stale () { |
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$stale = true; |
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if (isset($this->settings['update/hold']) and ($this->settings['update/hold']=='ping')) : |
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$stale = false; // don't update on any timed updates; pings only |
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elseif (isset($this->settings['update/hold']) and ($this->settings['update/hold']=='next')) : |
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$stale = true; // update on the next timed update |
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elseif (!isset($this->settings['update/ttl']) or !isset($this->settings['update/last'])) : |
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$stale = true; // initial update |
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else : |
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$after = ((int) $this->settings['update/last']) |
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+((int) $this->settings['update/ttl'] * 60); |
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$stale = (time() >= $after); |
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endif; |
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return $stale; |
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} /* SyndicatedLink::stale () */ |
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|
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function poll ($crash_ts = NULL) { |
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global $wpdb; |
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|
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$this->magpie = fetch_rss($this->link->link_rss); |
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$new_count = NULL; |
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|
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$resume = FeedWordPress::affirmative($this->settings, 'update/unfinished'); |
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if ($resume) : |
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// pick up where we left off |
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$processed = array_map('trim', explode("\n", $this->settings['update/processed'])); |
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else : |
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// begin at the beginning |
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$processed = array(); |
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endif; |
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|
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if (is_object($this->magpie)) : |
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$new_count = array('new' => 0, 'updated' => 0); |
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|
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# -- Update Link metadata live from feed |
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$channel = $this->magpie->channel; |
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|
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if (!isset($channel['id'])) : |
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$channel['id'] = $this->link->link_rss; |
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endif; |
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|
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$update = array(); |
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if (!$this->hardcode('url') and isset($channel['link'])) : |
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$update[] = "link_url = '".$wpdb->escape($channel['link'])."'"; |
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endif; |
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|
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if (!$this->hardcode('name') and isset($channel['title'])) : |
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$update[] = "link_name = '".$wpdb->escape($channel['title'])."'"; |
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endif; |
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|
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if (!$this->hardcode('description')) : |
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if (isset($channel['tagline'])) : |
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$update[] = "link_description = '".$wpdb->escape($channel['tagline'])."'"; |
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elseif (isset($channel['description'])) : |
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$update[] = "link_description = '".$wpdb->escape($channel['description'])."'"; |
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endif; |
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endif; |
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|
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$this->settings = array_merge($this->settings, $this->flatten_array($channel)); |
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|
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$this->settings['update/last'] = time(); $ttl = $this->ttl(); |
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if (!is_null($ttl)) : |
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$this->settings['update/ttl'] = $ttl; |
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$this->settings['update/timed'] = 'feed'; |
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else : |
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// spread out over a time interval for staggered updates |
| 196 |
if (isset($this->settings['update/window'])) : |
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$updateWindow = $this->settings['update/window']; |
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else : |
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$updateWindow = get_option('feedwordpress_update_window'); |
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endif; |
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|
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if (!is_numeric($updateWindow) or ($updateWindow < 1)) : |
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$updateWindow = DEFAULT_UPDATE_PERIOD; |
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endif; |
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|
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$fudgedInterval = $updateWindow+rand(0, 2*($updateWindow/3)); |
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$this->settings['update/ttl'] = apply_filters('syndicated_feed_automatic_ttl', $fudgedInterval, $this); |
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$this->settings['update/timed'] = 'automatically'; |
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endif; |
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$this->settings['update/ttl'] = apply_filters('syndicated_feed_ttl', $this->settings['update/ttl'], $this); |
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|
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if (!isset($this->settings['update/hold']) or $this->settings['update/hold']!='ping') : |
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$this->settings['update/hold'] = 'scheduled'; |
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endif; |
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|
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$this->settings['update/unfinished'] = 'yes'; |
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|
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$update[] = "link_notes = '".$wpdb->escape($this->settings_to_notes())."'"; |
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|
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$update_set = implode(',', $update); |
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|
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// Update the properties of the link from the feed information |
| 223 |
$result = $wpdb->query(" |
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UPDATE $wpdb->links |
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SET $update_set |
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WHERE link_id='$this->id' |
| 227 |
"); |
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|
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# -- Add new posts from feed and update any updated posts |
| 230 |
$crashed = false; |
| 231 |
|
| 232 |
if (is_array($this->magpie->items)) : |
| 233 |
foreach ($this->magpie->items as $item) : |
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$post =& new SyndicatedPost($item, $this); |
| 235 |
if (!$resume or !in_array(trim($post->guid()), $processed)) : |
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$processed[] = $post->guid(); |
| 237 |
if (!$post->filtered()) : |
| 238 |
$new = $post->store(); |
| 239 |
if ( $new !== false ) $new_count[$new]++; |
| 240 |
endif; |
| 241 |
|
| 242 |
if (!is_null($crash_ts) and (time() > $crash_ts)) : |
| 243 |
$crashed = true; |
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break; |
| 245 |
endif; |
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endif; |
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endforeach; |
| 248 |
endif; |
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|
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// Copy back any changes to feed settings made in the course of updating (e.g. new author rules) |
| 251 |
$to_notes = $this->settings; |
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|
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$this->settings['update/processed'] = $processed; |
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if (!$crashed) : |
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$this->settings['update/unfinished'] = 'no'; |
| 256 |
endif; |
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|
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$update_set = "link_notes = '".$wpdb->escape($this->settings_to_notes())."'"; |
| 259 |
|
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// Update the properties of the link from the feed information |
| 261 |
$result = $wpdb->query(" |
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UPDATE $wpdb->links |
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SET $update_set |
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WHERE link_id='$this->id' |
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"); |
| 266 |
endif; |
| 267 |
|
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return $new_count; |
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} /* SyndicatedLink::poll() */ |
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|
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/** |
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* Updates the URL for the feed syndicated by this link. |
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* |
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* @param string $url The new feed URL to use for this source. |
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* @return bool TRUE on success, FALSE on failure. |
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*/ |
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function set_uri ($url) { |
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global $wpdb; |
| 279 |
|
| 280 |
if ($this->found()) : |
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// Update link_rss |
| 282 |
$result = $wpdb->query(" |
| 283 |
UPDATE $wpdb->links |
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SET |
| 285 |
link_rss = '".$wpdb->escape($url)."' |
| 286 |
WHERE link_id = '".$wpdb->escape($this->id)."' |
| 287 |
"); |
| 288 |
|
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$ret = ($result ? true : false); |
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else : |
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$ret = false; |
| 292 |
endif; |
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return $ret; |
| 294 |
} /* SyndicatedLink::set_uri () */ |
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|
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function map_name_to_new_user ($name, $newuser_name) { |
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global $wpdb; |
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|
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if (strlen($newuser_name) > 0) : |
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$userdata = array(); |
| 301 |
$userdata['ID'] = NULL; |
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|
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$userdata['user_login'] = sanitize_user($newuser_name); |
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$userdata['user_login'] = apply_filters('pre_user_login', $userdata['user_login']); |
| 305 |
|
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$userdata['user_nicename'] = sanitize_title($newuser_name); |
| 307 |
$userdata['user_nicename'] = apply_filters('pre_user_nicename', $userdata['user_nicename']); |
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|
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$userdata['display_name'] = $wpdb->escape($newuser_name); |
| 310 |
|
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$newuser_id = wp_insert_user($userdata); |
| 312 |
if (is_numeric($newuser_id)) : |
| 313 |
if (is_null($name)) : // Unfamiliar author |
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$this->settings['unfamiliar author'] = $newuser_id; |
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else : |
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$this->settings['map authors']['name'][$name] = $newuser_id; |
| 317 |
endif; |
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else : |
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// TODO: Add some error detection and reporting |
| 320 |
endif; |
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else : |
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// TODO: Add some error reporting |
| 323 |
endif; |
| 324 |
} /* SyndicatedLink::map_name_to_new_user () */ |
| 325 |
|
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function settings_to_notes () { |
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$to_notes = $this->settings; |
| 328 |
|
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unset($to_notes['link/id']); // Magic setting; don't save |
| 330 |
unset($to_notes['link/uri']); // Magic setting; don't save |
| 331 |
unset($to_notes['link/name']); // Magic setting; don't save |
| 332 |
unset($to_notes['hardcode categories']); // Deprecated |
| 333 |
unset($to_notes['unfamiliar categories']); // Deprecated |
| 334 |
|
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// Collapse array settings |
| 336 |
if (isset($to_notes['update/processed']) and (is_array($to_notes['update/processed']))) : |
| 337 |
$to_notes['update/processed'] = implode("\n", $to_notes['update/processed']); |
| 338 |
endif; |
| 339 |
|
| 340 |
if (isset($to_notes['cats']) and is_array($to_notes['cats'])) : |
| 341 |
$to_notes['cats'] = implode(FEEDWORDPRESS_CAT_SEPARATOR, $to_notes['cats']); |
| 342 |
endif; |
| 343 |
if (isset($to_notes['tags']) and is_array($to_notes['tags'])) : |
| 344 |
$to_notes['tags'] = implode(FEEDWORDPRESS_CAT_SEPARATOR, $to_notes['tags']); |
| 345 |
endif; |
| 346 |
|
| 347 |
// Collapse the author mapping rule structure back into a flat string |
| 348 |
if (isset($to_notes['map authors'])) : |
| 349 |
$ma = array(); |
| 350 |
foreach ($to_notes['map authors'] as $rule_type => $author_rules) : |
| 351 |
foreach ($author_rules as $author_name => $author_action) : |
| 352 |
$ma[] = $rule_type."\n".$author_name."\n".$author_action; |
| 353 |
endforeach; |
| 354 |
endforeach; |
| 355 |
$to_notes['map authors'] = implode("\n\n", $ma); |
| 356 |
endif; |
| 357 |
|
| 358 |
$notes = ''; |
| 359 |
foreach ($to_notes as $key => $value) : |
| 360 |
$notes .= $key . ": ". addcslashes($value, "\0..\37".'\\') . "\n"; |
| 361 |
endforeach; |
| 362 |
return $notes; |
| 363 |
} /* SyndicatedLink::settings_to_notes () */ |
| 364 |
|
| 365 |
function save_settings ($reload = false) { |
| 366 |
global $wpdb; |
| 367 |
|
| 368 |
$update_set = "link_notes = '".$wpdb->escape($this->settings_to_notes())."'"; |
| 369 |
|
| 370 |
// Update the properties of the link from the feed information |
| 371 |
$result = $wpdb->query(" |
| 372 |
UPDATE $wpdb->links |
| 373 |
SET $update_set |
| 374 |
WHERE link_id='$this->id' |
| 375 |
"); |
| 376 |
|
| 377 |
if ($reload) : |
| 378 |
// reload link information from DB |
| 379 |
if (function_exists('clean_bookmark_cache')) : |
| 380 |
clean_bookmark_cache($this->id); |
| 381 |
endif; |
| 382 |
endif; |
| 383 |
} /* SyndicatedLink::save_settings () */ |
| 384 |
|
| 385 |
function uri () { |
| 386 |
return (is_object($this->link) ? $this->link->link_rss : NULL); |
| 387 |
} /* SyndicatedLink::uri () */ |
| 388 |
|
| 389 |
function homepage ($fromFeed = true) { |
| 390 |
if ($fromFeed) : |
| 391 |
$url = (isset($this->settings['feed/link']) ? $this->settings['feed/link'] : NULL); |
| 392 |
else : |
| 393 |
$url = $this->link->link_url; |
| 394 |
endif; |
| 395 |
return $url; |
| 396 |
} /* SyndicatedLink::homepage () */ |
| 397 |
|
| 398 |
function name ($fromFeed = true) { |
| 399 |
if ($fromFeed) : |
| 400 |
$name = (isset($this->settings['feed/title']) ? $this->settings['feed/title'] : NULL); |
| 401 |
else : |
| 402 |
$name = $this->link->link_name; |
| 403 |
endif; |
| 404 |
return $name; |
| 405 |
} /* SyndicatedLink::name () */ |
| 406 |
|
| 407 |
function ttl () { |
| 408 |
if (is_object($this->magpie)) : |
| 409 |
$channel = $this->magpie->channel; |
| 410 |
else : |
| 411 |
$channel = array(); |
| 412 |
endif; |
| 413 |
|
| 414 |
if (isset($channel['ttl'])) : |
| 415 |
// "ttl stands for time to live. It's a number of |
| 416 |
// minutes that indicates how long a channel can be |
| 417 |
// cached before refreshing from the source." |
| 418 |
// <http://blogs.law.harvard.edu/tech/rss#ltttlgtSubelementOfLtchannelgt> |
| 419 |
$ret = $channel['ttl']; |
| 420 |
elseif (isset($channel['sy']['updatefrequency']) or isset($channel['sy']['updateperiod'])) : |
| 421 |
$period_minutes = array ( |
| 422 |
'hourly' => 60, /* minutes in an hour */ |
| 423 |
'daily' => 1440, /* minutes in a day */ |
| 424 |
'weekly' => 10080, /* minutes in a week */ |
| 425 |
'monthly' => 43200, /* minutes in a month */ |
| 426 |
'yearly' => 525600, /* minutes in a year */ |
| 427 |
); |
| 428 |
|
| 429 |
// "sy:updatePeriod: Describes the period over which the |
| 430 |
// channel format is updated. Acceptable values are: |
| 431 |
// hourly, daily, weekly, monthly, yearly. If omitted, |
| 432 |
// daily is assumed." <http://web.resource.org/rss/1.0/modules/syndication/> |
| 433 |
if (isset($channel['sy']['updateperiod'])) : $period = $channel['sy']['updateperiod']; |
| 434 |
else : $period = 'daily'; |
| 435 |
endif; |
| 436 |
|
| 437 |
// "sy:updateFrequency: Used to describe the frequency |
| 438 |
// of updates in relation to the update period. A |
| 439 |
// positive integer indicates how many times in that |
| 440 |
// period the channel is updated. ... If omitted a value |
| 441 |
// of 1 is assumed." <http://web.resource.org/rss/1.0/modules/syndication/> |
| 442 |
if (isset($channel['sy']['updatefrequency'])) : $freq = (int) $channel['sy']['updatefrequency']; |
| 443 |
else : $freq = 1; |
| 444 |
endif; |
| 445 |
|
| 446 |
$ret = (int) ($period_minutes[$period] / $freq); |
| 447 |
else : |
| 448 |
$ret = NULL; |
| 449 |
endif; |
| 450 |
return $ret; |
| 451 |
} /* SyndicatedLink::ttl() */ |
| 452 |
|
| 453 |
// SyndicatedLink::flatten_array (): flatten an array. Useful for |
| 454 |
// hierarchical and namespaced elements. |
| 455 |
// |
| 456 |
// Given an array which may contain array or object elements in it, |
| 457 |
// return a "flattened" array: a one-dimensional array of scalars |
| 458 |
// containing each of the scalar elements contained within the array |
| 459 |
// structure. Thus, for example, if $a['b']['c']['d'] == 'e', then the |
| 460 |
// returned array for FeedWordPress::flatten_array($a) will contain a key |
| 461 |
// $a['feed/b/c/d'] with value 'e'. |
| 462 |
function flatten_array ($arr, $prefix = 'feed/', $separator = '/') { |
| 463 |
$ret = array (); |
| 464 |
if (is_array($arr)) : |
| 465 |
foreach ($arr as $key => $value) : |
| 466 |
if (is_scalar($value)) : |
| 467 |
$ret[$prefix.$key] = $value; |
| 468 |
else : |
| 469 |
$ret = array_merge($ret, $this->flatten_array($value, $prefix.$key.$separator, $separator)); |
| 470 |
endif; |
| 471 |
endforeach; |
| 472 |
endif; |
| 473 |
return $ret; |
| 474 |
} /* SyndicatedLink::flatten_array () */ |
| 475 |
|
| 476 |
function hardcode ($what) { |
| 477 |
$default = get_option("feedwordpress_hardcode_$what"); |
| 478 |
if ( $default === 'yes' ) : |
| 479 |
// If the default is to hardcode, then we want the |
| 480 |
// negation of negative(): TRUE by default and FALSE if |
| 481 |
// the setting is explicitly "no" |
| 482 |
$ret = !FeedWordPress::negative($this->settings, "hardcode $what"); |
| 483 |
else : |
| 484 |
// If the default is NOT to hardcode, then we want |
| 485 |
// affirmative(): FALSE by default and TRUE if the |
| 486 |
// setting is explicitly "yes" |
| 487 |
$ret = FeedWordPress::affirmative($this->settings, "hardcode $what"); |
| 488 |
endif; |
| 489 |
return $ret; |
| 490 |
} /* SyndicatedLink::hardcode () */ |
| 491 |
|
| 492 |
function syndicated_status ($what, $default, $fallback = true) { |
| 493 |
global $wpdb; |
| 494 |
|
| 495 |
// Use local setting if we have it |
| 496 |
if ( isset($this->settings["$what status"]) ) : |
| 497 |
$ret = $this->settings["$what status"]; |
| 498 |
|
| 499 |
// Or fall back to global default if we can |
| 500 |
elseif ($fallback) : |
| 501 |
$ret = FeedWordPress::syndicated_status($what, $default); |
| 502 |
|
| 503 |
// Or use default value if we can't. |
| 504 |
else : |
| 505 |
$ret = $default; |
| 506 |
|
| 507 |
endif; |
| 508 |
|
| 509 |
return $wpdb->escape(trim(strtolower($ret))); |
| 510 |
} /* SyndicatedLink:syndicated_status () */ |
| 511 |
} // class SyndicatedLink |
| 512 |
|
| 513 |
|
