twitter_stream_test.js

(function(){

    var user = 'miya2000', password = '?????????';
    var follows = '6489432'; // csv

    var xhr = new XMLHttpRequest();
    xhr.open('POST', 'http://stream.twitter.com/1/statuses/filter.json', true, user, password);
    xhr.setRequestHeader('Content-Type' , 'application/x-www-form-urlencoded');
    xhr.onreadystatechange = onReadyStateChange;
    xhr.send('follow=' + follows);

    function onReadyStateChange() {
        if (xhr.readyState == 3) {
            if (xhr.status != 200) {
                throw new Error('status:[' + xhr.status + '] statusText:[' + xhr.statusText + ']');
            }
            startObserve();
        }
    }

    function startObserve() {
        var i = 0;
        var preText;
        var tid = setInterval(function() {
            if (preText != xhr.responseText) {
                var tweets = xhr.responseText.replace(/\s+$/, '').split('\n');
                opera.postError(tweets[tweets.length-1]);
                preText = xhr.responseText;
            }
            if (++i > 60) { // 1 minute.
                opera.postError('over');
                xhr.abort();
                clearInterval(tid);
            }
        }, 1000);
    }
})()