move image extractor into NReadability

PocketSharp.Reader/PocketReader.cs

@@ -111,7 +111,7 @@ namespace PocketSharp
       TranscodingResult transcodingResult = transcoder.Transcode(transcodingInput);
 
       // get images from article
-      List<PocketArticleImage> images = transcodingResult.RawDocument.GetElementsByTagName("img").Select<XElement, PocketArticleImage>(image =>
+      List<PocketArticleImage> images = transcodingResult.Images.Select<XElement, PocketArticleImage>(image =>
       {
         Uri imageUri;
         Uri.TryCreate(image.GetAttributeValue("src", null), UriKind.Absolute, out imageUri);

PortablePorts/NReadability/NReadabilityTranscoder.cs

@@ -240,6 +240,8 @@ namespace PocketSharp.Ports.NReadability
           out extractedTitle,
           out nextPageUrl);
 
+      IEnumerable<XElement> images = transcodedXmlDocument.GetElementsByTagName("img");
+
       string transcodedContent =
         _sgmlDomSerializer.SerializeDocument(
           transcodedXmlDocument,
@@ -253,6 +255,7 @@ namespace PocketSharp.Ports.NReadability
             ExtractedContent = transcodedContent,
             ExtractedTitle = extractedTitle,
             NextPageUrl = nextPageUrl,
+            Images = images
           };
     }
 

PortablePorts/NReadability/TranscodingResult.cs

@@ -1,4 +1,4 @@
-using System;
+using System.Collections.Generic;
 using System.Xml.Linq;
 
 namespace PocketSharp.Ports.NReadability
@@ -22,5 +22,7 @@ namespace PocketSharp.Ports.NReadability
     public string NextPageUrl { get; set; }
 
     public XDocument RawDocument { get; set; }
+
+    public IEnumerable<XElement> Images { get; set; }
   }
 }