.config/coc/extensions/node_modules/coc-prettier/node_modules/htmlparser2/lib/FeedHandler.js

   1 var DomHandler = require("domhandler");
   2 var DomUtils = require("domutils");
   3
   4 //TODO: make this a streamable handler
   5 function FeedHandler(callback, options) {
   6     this.init(callback, options);
   7 }
   8
   9 require("inherits")(FeedHandler, DomHandler);
  10
  11 FeedHandler.prototype.init = DomHandler;
  12
  13 function getElements(what, where) {
  14     return DomUtils.getElementsByTagName(what, where, true);
  15 }
  16 function getOneElement(what, where) {
  17     return DomUtils.getElementsByTagName(what, where, true, 1)[0];
  18 }
  19 function fetch(what, where, recurse) {
  20     return DomUtils.getText(
  21         DomUtils.getElementsByTagName(what, where, recurse, 1)
  22     ).trim();
  23 }
  24
  25 function addConditionally(obj, prop, what, where, recurse) {
  26     var tmp = fetch(what, where, recurse);
  27     if (tmp) obj[prop] = tmp;
  28 }
  29
  30 var isValidFeed = function(value) {
  31     return value === "rss" || value === "feed" || value === "rdf:RDF";
  32 };
  33
  34 FeedHandler.prototype.onend = function() {
  35     var feed = {},
  36         feedRoot = getOneElement(isValidFeed, this.dom),
  37         tmp,
  38         childs;
  39
  40     if (feedRoot) {
  41         if (feedRoot.name === "feed") {
  42             childs = feedRoot.children;
  43
  44             feed.type = "atom";
  45             addConditionally(feed, "id", "id", childs);
  46             addConditionally(feed, "title", "title", childs);
  47             if (
  48                 (tmp = getOneElement("link", childs)) &&
  49                 (tmp = tmp.attribs) &&
  50                 (tmp = tmp.href)
  51             )
  52                 feed.link = tmp;
  53             addConditionally(feed, "description", "subtitle", childs);
  54             if ((tmp = fetch("updated", childs))) feed.updated = new Date(tmp);
  55             addConditionally(feed, "author", "email", childs, true);
  56
  57             feed.items = getElements("entry", childs).map(function(item) {
  58                 var entry = {},
  59                     tmp;
  60
  61                 item = item.children;
  62
  63                 addConditionally(entry, "id", "id", item);
  64                 addConditionally(entry, "title", "title", item);
  65                 if (
  66                     (tmp = getOneElement("link", item)) &&
  67                     (tmp = tmp.attribs) &&
  68                     (tmp = tmp.href)
  69                 )
  70                     entry.link = tmp;
  71                 if ((tmp = fetch("summary", item) || fetch("content", item)))
  72                     entry.description = tmp;
  73                 if ((tmp = fetch("updated", item)))
  74                     entry.pubDate = new Date(tmp);
  75                 return entry;
  76             });
  77         } else {
  78             childs = getOneElement("channel", feedRoot.children).children;
  79
  80             feed.type = feedRoot.name.substr(0, 3);
  81             feed.id = "";
  82             addConditionally(feed, "title", "title", childs);
  83             addConditionally(feed, "link", "link", childs);
  84             addConditionally(feed, "description", "description", childs);
  85             if ((tmp = fetch("lastBuildDate", childs)))
  86                 feed.updated = new Date(tmp);
  87             addConditionally(feed, "author", "managingEditor", childs, true);
  88
  89             feed.items = getElements("item", feedRoot.children).map(function(
  90                 item
  91             ) {
  92                 var entry = {},
  93                     tmp;
  94
  95                 item = item.children;
  96
  97                 addConditionally(entry, "id", "guid", item);
  98                 addConditionally(entry, "title", "title", item);
  99                 addConditionally(entry, "link", "link", item);
 100                 addConditionally(entry, "description", "description", item);
 101                 if ((tmp = fetch("pubDate", item)))
 102                     entry.pubDate = new Date(tmp);
 103                 return entry;
 104             });
 105         }
 106     }
 107     this.dom = feed;
 108     DomHandler.prototype._handleCallback.call(
 109         this,
 110         feedRoot ? null : Error("couldn't find root of feed")
 111     );
 112 };
 113
 114 module.exports = FeedHandler;