From 984dad43ae49ba1cfa236af5567bf4c934e59263 Mon Sep 17 00:00:00 2001
From: Ascrod <32915892+Ascrod@users.noreply.github.com>
Date: Fri, 1 Jun 2018 21:32:59 -0400
Subject: Update Readability from mozilla-central release branch (FF 60.0).

---
 toolkit/components/reader/JSDOMParser.js | 21 ++++++++++++++++++---
 1 file changed, 18 insertions(+), 3 deletions(-)

(limited to 'toolkit/components/reader/JSDOMParser.js')

diff --git a/toolkit/components/reader/JSDOMParser.js b/toolkit/components/reader/JSDOMParser.js
index 38f59c4ea..dd9d37230 100644
--- a/toolkit/components/reader/JSDOMParser.js
+++ b/toolkit/components/reader/JSDOMParser.js
@@ -560,7 +560,8 @@
     },
   };
 
-  var Document = function () {
+  var Document = function (url) {
+    this.documentURI = url;
     this.styleSheets = [];
     this.childNodes = [];
     this.children = [];
@@ -600,6 +601,20 @@
       node.textContent = text;
       return node;
     },
+
+    get baseURI() {
+      if (!this.hasOwnProperty("_baseURI")) {
+        this._baseURI = this.documentURI;
+        var baseElements = this.getElementsByTagName("base");
+        var href = baseElements[0] && baseElements[0].getAttribute("href");
+        if (href) {
+          try {
+            this._baseURI = (new URL(href, this._baseURI)).href;
+          } catch (ex) {/* Just fall back to documentURI */}
+        }
+      }
+      return this._baseURI;
+    },
   };
 
   var Element = function (tag) {
@@ -1118,9 +1133,9 @@
     /**
      * Parses an HTML string and returns a JS implementation of the Document.
      */
-    parse: function (html) {
+    parse: function (html, url) {
       this.html = html;
-      var doc = this.doc = new Document();
+      var doc = this.doc = new Document(url);
       this.readChildren(doc);
 
       // If this is an HTML document, remove root-level children except for the
-- 
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