TwitterFeed:Wikka

Revision [20593]

This is an old revision of TwitterFeed made by PezHore on 2009-05-07 09:46:41.

Twitter Feed

This is my first attempt at an action... hopefully things will work out ok.

Note: This is mostly re-tooled from the default rss action. I added in some additional features as specified below

Features

Current Features

Takes twitter rss feed and...

Strips the "Username: " portion from the feed

Only posts the description (the Title and description are identical, one is just a link back to the individual twitter post)

Optionally displays @ replies (providing one-sided conversations)

Optionally limits results to specified number (helpful for fitting the feed into a portion of your layout)

Automatically converts twittered links to clickable links.

Automatically converts @username to a clickable link to www.twitter.com/username

Source Code

<?php
/**
* Cache and display an Twitter RSS feed.
*
* Usage:
* {{twitter http://twitter.com/statuses/user_timeline/[uid]}} or
* {{twitter url="http://twitter.com/statuses/user_timeline/[uid]" cachetime="30"}} or
* {{twitter url="http://twitter.com/statuses/user_timeline/[uid]" cachetime="30" replies=true}} or
* {{twitter url="http://twitter.com/statuses/user_timeline/[uid]" cachetime="30" replies="1" maxitems="5"}}
*
* NOTE 1: in Onyx-RSS default is "debugMode" which results in all errors being printed
* this could be suppressed by turning debug mode off, but then we'd never have a
* clue about the cause of any error.
* A better (preliminary) approach seems to be to override the raiseError() method
* still providing the text of any error message, only within an HTML comment:
* that way normal display will look clean but you can look at the HTML source to
* find the cause of any problem.
* NOTE 2: no solution for timeout problems with non-existing feeds yet...
* NOTE 3: A major portion of this was taken from the rss.php action.
*
* Version 0.6
*
* @input string $url mandatory: URL of the feed
* @input integer $cachetime optional: time in minutes to cache the feed
* @input boolean $replies optional: True for displaying @username replies. Defaults to false.
* @input integer $max_items optional: Maximum items to display
* @output ... tbd @@@
* @uses Wakka::cleanUrl()
* @uses Wakka::ReturnSafeHTML()
* @todo Add comments for readability
*
* Changelog
* 0.6 Added clickable @Nicks
* 0.5 Fixed Nick Bug
* 0.4 Added comments
* 0.3 Incorporated replies and maxitems parameters
* 0.2 Added coding for parsing out username/identifying and click-ifying links
* 0.1 Copied over from rss action
*/
$caching = true; // change this to false to disable caching
$twitter_cache_path = "/tmp"; // set this to a writable directory to store the cache files in
$lowest_cache_time_allowed = "5"; // set this to the lowest caching time allowed
// Begin dealing with action variables
// Maximum items to display
$twitter_max_items = (int)trim($this->htmlspecialchars_ent($vars['maxitems']));
if (!$twitter_max_items) {
$max_items = 5; // this is the default number of items to display
} else {
$max_items = $twitter_max_items; // set max items to passed variable
}
// Are we displaying replies
$twitter_replies = (bool)trim($this->htmlspecialchars_ent($vars['replies']));
if (!$twitter_replies) {
$replies = 0; // defaults to not showing replies
} else {
$replies = $twitter_replies; // set replies to passed variable
}
// What cache time are we using
$twitter_cache_time = (int)trim($this->htmlspecialchars_ent($vars['cachetime']));
if (!$twitter_cache_time) {
$twitter_cache_time = 30; // set this for default cache time
} elseif ($twitter_cache_time < $lowest_cache_time_allowed) {
$twitter_cache_time = $lowest_cache_time_allowed;
}
$twitter_cache_file = ""; // initial value, no need to ever change
// End dealing with action variables
// Action configuration
$twitter_path = $this->htmlspecialchars_ent($vars['url']);
if ((!$twitter_path) && $wikka_vars) $twitter_path = $wikka_vars;
$twitter_path = $this->cleanUrl(trim($twitter_path));
// override - Added by pezhore: not sure what this does...
if (preg_match("/^(http|https):\/\/([^\\s\"<>]+)$/i", $twitter_path))
{
$onyx_classpath = $this->GetConfigValue('onyx_path').DIRECTORY_SEPARATOR.'onyx-rss.php';
/**
* 3rdParty plugin; implements feed aggregation.
*/
#include_once('3rdparty'.DIRECTORY_SEPARATOR.'plugins'.DIRECTORY_SEPARATOR.'onyx-rss'.DIRECTORY_SEPARATOR.'onyx-rss.php');
include_once $onyx_classpath;
if (!class_exists('Wikka_Onyx'))
{
/**
* Extension to plugin; implements error handling.
*
* @package Actions
*/
class Wikka_Onyx extends ONYX_RSS
{
//private function raiseError($line, $err)
function raiseError($line, $err)
{
if ($this->debugMode)
{
$errortext = sprintf($this->error, $line, $err);
echo ''."\n";
}
}
}
}
}
if (preg_match("/^(http|https):\/\/([^\\s\"<>]+)$/i", $twitter_path))
{
if ($caching)
{
// Create unique cache file name based on URL
$twitter_cache_file = md5($twitter_path).".xml";
}
//Load the RSS Feed: workaround to hide error messages within HTML comments:
#$twitter =& new Wikka_Onyx();
$twitter = instantiate('Wikka_Onyx');
$twitter->setCachePath($twitter_cache_path);
$twitter->parse($twitter_path, $twitter_cache_file, $twitter_cache_time);
$meta = $twitter->getData(ONYX_META);
$nick = ": ";
//List the feed's items
$cached_output = "<ul>\n";
while ($max_items > 0 && ($item = $twitter->getNextItem()))
{
$str_desc = $item['description']; // Only using the description for our feed
$pos = strpos($str_desc, $nick); // Find the location of the beginning of the tweet
$pos = $pos + 2; // Add two for the ':' and ' ' characters
$str_desc = substr($str_desc, $pos); // Get everything after the "TwitterNick: "
// Check to see if replies are to be included
if (strcspn($str_desc,"@") && $replies == 0)
{
// Replace http:// with valid links
$str_desc = preg_replace("/(http:\/\/[^\s]+)/", "<a href=\"$1\">$1</a>", $str_desc);
// Replace @username with valid link
$str_desc = preg_replace("/@([a-z,A-Z,0-9]*)/", "<a href=\"http://www.twitter.com/$1\">@$1</a>", $str_desc);
$cached_output .= "<li>".$str_desc."</li>\n";
$max_items = $max_items - 1;
} elseif ($replies == 1) // If replies are wanted, show them
{
// Replace http:// with valid links
$str_desc = preg_replace("/(http:\/\/[^\s]+)/", "<a href=\"$1\">$1</a>", $str_desc);
// Replace @username with valid link
$str_desc = preg_replace("/@([a-z,A-Z,0-9]*)/", "<a href=\"http://www.twitter.com/$1\">@$1</a>", $str_desc);
$cached_output .= "<li>".$str_desc."</li>\n";
$max_items = $max_items - 1;
}
}
$cached_output .= "</ul>\n";
echo $this->ReturnSafeHTML($cached_output);
}
else // If this was called improperly, display usage
{
echo 'Error: Invalid Twitter action syntax. Proper usage: {{twitter http://twitter.com/statuses/user_timeline/[uid]}} or
{{twitter url="http://twitter.com/statuses/user_timeline/[uid]" cachetime="30"}} or
{{twitter url="http://twitter.com/statuses/user_timeline/[uid]" cachetime="30" replies=true}} or
{{twitter url="http://twitter.com/statuses/user_timeline/[uid]" cachetime="30" replies="1" maxitems="5"}}}}'; # i18n
}
?>

Installation

Save the code above as twitter.php in your actions folder (for trunk, you have to first create an actions/twitter folder, then save as actions/twitter/twitter.php)

Use as {{twitter}} according to the usage stated above

Known Bugs

The coding for dropping "Username: " isn't quite up to par. Change line #133 to $str_desc = substr($str_desc, #); where # is the number of characters from of your twitter name + 2 (for ':' and ' '). Working on the fix.

Fixed in Version 0.5 and above

Thoughts? Questions? Let me know. I'm on IRC as Pezhore.

CategoryUserContributions

Wikka : TwitterFeed