--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/client/js/tweetsource.js	Wed Feb 15 18:52:07 2012 +0100
@@ -0,0 +1,215 @@
+/* Author: Raphaël Velt, IRI
+ * 
+ * Licence: CeCILL-B - http://www.cecill.info/licences/Licence_CeCILL-B_V1-fr.html
+ * 
+ * */
+
+Btv_TweetArray = function() {
+    this.tweets = [];
+    this.idIndex = [];
+}
+
+Btv_TweetArray.prototype.push = function(_tweet) {
+    this.tweets.push(_tweet);
+    this.idIndex.push(_tweet.id_str);
+}
+
+Btv_TweetArray.prototype.addTweet = function(_tweet, _inhibitCallback) {
+    if (this.idIndex.indexOf(_tweet.id_str) != -1) {
+        return;
+    }
+    if (!_tweet.date_value) {
+        _tweet.date_value = Date.parse(_tweet.created_at.replace(/(\+|-)/,'UTC$1'));
+    }
+    var _pos = this.tweets.length;
+    while (_pos && this.idIndex[_pos - 1] > _tweet.id_str) {
+        _pos--;
+    }
+    this.tweets.splice(_pos,0,_tweet);
+    this.idIndex.splice(_pos,0,_tweet.id_str);
+}
+
+Btv_TweetArray.prototype.addMultipleTweets = function(_multiTweets) {
+    var _l = _multiTweets.length;
+    for (var _i = 0; _i < _l; _i++) {
+        this.addTweet(_multiTweets[_i], true);
+    }
+}
+
+Btv_TweetArray.prototype.count = function() {
+    return this.tweets.length;
+}
+
+Btv_TweetArray.prototype.getTweet = function(_i) {
+    return this.tweets(_i);
+}
+
+Btv_TweetArray.prototype.slice = function(_start, _end) {
+    var _slice = this.tweets.slice(_start, _end),
+        _result = new Btv_TweetArray(),
+        _l = _slice.length;
+    for (var _i = 0; _i < _l; _i++) {
+        _result.push(_slice[_i]);
+    }
+    return _result;
+}
+
+Btv_TweetArray.prototype.reverse = function() {
+    var _result = new Btv_TweetArray(),
+        _l = this.tweets.length;
+    for (var _i = _l-1; _i >= 0; _i--) {
+        _result.push(this.tweets[_i]);
+    }
+    return _result;
+}
+
+Btv_TweetArray.prototype.each = function(_callback) {
+    var _l = this.count();
+    for (var _i = 0; _i < _l; _i++) {
+        _callback(this.tweets[_i]);
+    }
+}
+
+Btv_TweetArray.prototype.map = function(_callback) {
+    var _result = [];
+    this.each(function(_tweet) {
+        _result.push(_callback(_tweet))
+    });
+    return _result;
+}
+
+Btv_TweetArray.prototype.search = function(_filter) {
+    var _filtered = new Btv_TweetArray(),
+        _reFilter = new RegExp(_filter.replace(/\W/gim,'\\$1'),'gim');
+    this.each(function(_tweet) {
+        var _mention = '@' + _tweet.from_user;
+        if (( _tweet.text.search(_reFilter) != -1 ) || ( _mention.search(_reFilter) != -1 )) {
+            _filtered.push(_tweet);
+        }
+    });
+    return _filtered;
+}
+
+Btv_TweetArray.prototype.beforeDate = function(_date) {
+    var _filtered = new Btv_TweetArray();
+    this.each(function(_tweet) {
+        if (_tweet.date_value < _date) {
+            _filtered.push(_tweet);
+        }
+    });
+    return _filtered;
+}
+
+Btv_TweetArray.prototype.afterDate = function(_date) {
+    var _filtered = new Btv_TweetArray();
+    this.each(function(_tweet) {
+        if (_tweet.date_value > _date) {
+            _filtered.push(_tweet);
+        }
+    });
+    return _filtered;
+}
+
+Btv_TweetArray.prototype.tweetById = function(_tweetId) {
+    var _index = this.idIndex.indexOf(_tweetId);
+    return (_index ? this.tweets[_index] : null);
+}
+
+Btv_TweetArray.prototype.lastTweet = function() {
+    return this.tweets[this.tweets.length - 1];
+}
+
+/*
+ * 
+ */
+
+Btv_TweetSource = function(_opts) {
+    Btv_TweetArray.call(this);
+    this.loading = false;
+    if (!_opts || !_opts.keywords || !_opts.keywords.length) {
+        return;
+    }
+    this.options = _opts;
+    var _this = this;
+    this.retrieveInitialTweets()
+    setInterval(function() {
+        _this.retrieveNewTweets();
+    }, 5000);
+}
+
+Btv_TweetSource.prototype = new Btv_TweetArray();
+
+Btv_TweetSource.prototype.retrieveTweets = function(_opts) {
+    
+    function getTwitterUrl(url) {
+        $.getJSON(url, function(data) {
+            _currentPage++;
+            var _isLast = true;
+            if (data.results && data.results.length) {
+                _this.addMultipleTweets(data.results);
+                var _oldestTweetId = data.results[data.results.length - 1].id_str,
+                    _maxId = _oldestTweetId;
+                if (_currentPage < _opts.pages) {
+                    _isLast = false;
+                    getTwitterUrl(_baseurl + _firstparams + '&max_id=' + _maxId + _lastparams);
+                }
+            }
+            
+            if (_isLast) {
+                _this.loading = false;
+                if (_this.tweetsCallback) {
+                    _this.tweetsCallback();
+                }
+            }
+        });
+    }
+    
+    if (this.loading) {
+        return;
+    }
+    this.loading = true;
+    
+    var _baseurl = "http://search.twitter.com/search.json",
+        _currentPage = 0,
+        _firstparams = "?q="
+            + encodeURIComponent(this.options.keywords.join(' OR '))
+            + "&rpp=100"
+            + (this.options.lang ? "&lang=" + this.options.lang : '' ),
+        _lastparams = ( _opts.since_id ? "&since_id=" + _opts.since_id : '' )
+            + "&callback=?",
+        _jsonurl = _baseurl + _firstparams + _lastparams,
+        _this = this;
+    getTwitterUrl(_jsonurl);
+    
+}
+
+Btv_TweetSource.prototype.retrieveInitialTweets = function() {
+    this.retrieveTweets({
+        "pages": 6
+    });
+}
+
+Btv_TweetSource.prototype.retrieveNewTweets = function() {
+    this.retrieveTweets({
+        "pages": 1,
+        "since_id": this.lastTweet().id_str
+    });
+}
+
+Btv_TweetArray.prototype.setTweetsCallback = function(_callback) {
+    this.tweetsCallback = _callback;
+}
+
+/*
+Btv_TweetSubscriber = function(tweetArray) {
+    this.tweetArray = tweetArray;
+    this.position = 0;
+}
+
+Btv_TweetSubscriber.getTweets = function() {
+    var _p = this.position,
+        _l = this.tweetArray.count();
+    this.position = _l;
+    return this.tweetArray.slice(_p,_l);
+}
+*/
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