Просмотр архива Error Kitty - Better Errors for Node.js


<?php

var index = require("./index.js"),
    DomHandler = index.DomHandler,
    DomUtils = index.DomUtils;

//TODO: make this a streamable handler
function FeedHandler(callback, options){
    this.init(callback, options);
}

require("util").inherits(FeedHandler, DomHandler);

FeedHandler.prototype.init = DomHandler;

function getElements(what, where){
    return DomUtils.getElementsByTagName(what, where, true);
}
function getOneElement(what, where){
    return DomUtils.getElementsByTagName(what, where, true, 1)[0];
}
function fetch(what, where, recurse){
    return DomUtils.getText(
        DomUtils.getElementsByTagName(what, where, recurse, 1)
    ).trim();
}

function addConditionally(obj, prop, what, where, recurse){
    var tmp = fetch(what, where, recurse);
    if(tmp) obj[prop] = tmp;
}

var isValidFeed = function(value) {
    return value === "rss" || value === "feed" || value === "rdf:RDF";
};

FeedHandler.prototype.onend = function() {
    var feed = {},
        feedRoot = getOneElement(isValidFeed, this.dom),
        tmp, childs;

    if(feedRoot){
        if(feedRoot.name === "feed"){
            childs = feedRoot.children;

            feed.type = "atom";
            addConditionally(feed, "id", "id", childs);
            addConditionally(feed, "title", "title", childs);
            if((tmp = getOneElement("link", childs)) && (tmp = tmp.attribs) && (tmp = tmp.href)) feed.link = tmp;
            addConditionally(feed, "description", "subtitle", childs);
            if((tmp = fetch("updated", childs))) feed.updated = new Date(tmp);
            addConditionally(feed, "author", "email", childs, true);

            feed.items = getElements("entry", childs).map(function(item){
                var entry = {}, tmp;

                item = item.children;

                addConditionally(entry, "id", "id", item);
                addConditionally(entry, "title", "title", item);
                if((tmp = getOneElement("link", item)) && (tmp = tmp.attribs) && (tmp = tmp.href)) entry.link = tmp;
                addConditionally(entry, "description", "summary", item);
                if((tmp = fetch("updated", item))) entry.pubDate = new Date(tmp);
                return entry;
            });
        } else {
            childs = getOneElement("channel", feedRoot.children).children;

            feed.type = feedRoot.name.substr(0, 3);
            feed.id = "";
            addConditionally(feed, "title", "title", childs);
            addConditionally(feed, "link", "link", childs);
            addConditionally(feed, "description", "description", childs);
            if((tmp = fetch("lastBuildDate", childs))) feed.updated = new Date(tmp);
            addConditionally(feed, "author", "managingEditor", childs, true);

            feed.items = getElements("item", feedRoot.children).map(function(item){
                var entry = {}, tmp;

                item = item.children;

                addConditionally(entry, "id", "guid", item);
                addConditionally(entry, "title", "title", item);
                addConditionally(entry, "link", "link", item);
                addConditionally(entry, "description", "description", item);
                if((tmp = fetch("pubDate", item))) entry.pubDate = new Date(tmp);
                return entry;
            });
        }
    }
    this.dom = feed;
    DomHandler.prototype._handleCallback.call(
        this, feedRoot ? null : Error("couldn't find root of feed")
    );
};

module.exports = FeedHandler;

?>