MTのRSS FeedからGoogle Feed API経由でエントリの一覧表示

jquery.feed2node.js

/*
 * このライブラリを呼び出す前に、Google API呼び出しが必要になる
 * <script type="text/javascript" src="https://www.google.com/jsapi"></script>
 * <script>google.load("feeds", "1");</script>
 *
 * 実装例:
 * $(function(){
 *    $('rss').feed2node({
 *        'uri':'http://***.com/rss.xml',
 *        'limit':'5',
 *        'parent':'RssNews',
 *        'more':'More...',
 *        'more_uri':'http://***.com/'
 *    });
 * });
 *
 * 出力結果:
 * <div class="rss">
 *     <div class="RssNews">
 *         <dl class="RssNews clearfix">
 *         <dt>YYYY/MM/DD</dt>
 *         <dd><a href="http://***.com/***.html">***</a></dd>
 *         </dl>
 *         ...
 *         ...
 *     </div>
 *     <p class="RssNews more"><a href="http://***.com/">More...</a></p>
 * </div>
 */

(function($){
    $.fn.feed2node = function (options){

        var target = this;

        defaults = {
            limit:'',
            parent:'',
            more:'',
            more_uri:'',
            feeduri:''
        };

        var set = $.extend(defaults,options);
        var conjuction = '?';

        if (getUrlVars(set.uri)) conjuction='&';

        set.feeduri = set.uri + conjuction + cacheDate();
        readFeeds();

        function readFeeds(){
            var feed = new google.feeds.Feed(set.feeduri);
            feed.setNumEntries(set.limit);

            feed.load(function(result){
                if (result.error) return false;

                var setTarget = $(target).append($('<div></div>').attr({'class':set.parent}));

                $.each(result.feed.entries, function(index,elm){
                    $('div.'+set.parent)
                        .append($('<dl></dl>').attr({'class':set.parent+' clearfix'})
                            .append($('<dt></dt>').text(trimDate(this.publishedDate)))
                            .append($('<dd></dd>').append($('<a></a>').attr({href:this.link}).text(this.title)))
                        );
                });

                if (set.more) {
                    $(target)
                        .append($('<p></p>').attr({'class':set.parent+' more'})
                            .append($('<a></a>').attr({href:set.more_uri}).text(set.more))
                        );
                }
            });
        }

        function trimDate(pubDate){
            var dt = new Date(pubDate);

            return dt.getFullYear() + "/" + addZero(dt.getMonth() + 1) + "/" + addZero(dt.getDate());
        }

        function addZero(num){

            if (num < 10) {
                return "0" + num;
            } else {
                return "" + num;
            }

        }

        function cacheDate(){
            var now = new Date();
            var minutes = now.getMinutes();

            return (now.getMonth() + 1) + '0' + now.getDate() + '0' + now.getHours() + '0' + (minutes - (minutes % 10));
        }

        function getUrlVars(uri){

            if (uri.indexOf('?') == -1) {
                return false;
            }

            var vars = [], hash;
            var hashes = uri.slice(uri.indexOf('?') + 1).split('&');

            for (var i=0; i < hashes.length; i++) {
                hash=hashes[i].split('-');
                vars.push(hash[0]);
                vars[hash[0]] = hash[1];
            }

            return vars;
        }
    };
})(jQuery);