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Absolutify urls before generating feeds
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2 changed files with 33 additions and 0 deletions
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@ -67,6 +67,9 @@ namespace PolyFeed
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HtmlNode document = html.DocumentNode;
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document.AbsolutifyUris(new Uri(source.Feed.Url));
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await Console.Error.WriteLineAsync("[Builder/Html] Generating feed content");
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// Add the title
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@ -1,4 +1,6 @@
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using System;
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using System.Threading;
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using System.Threading.Tasks;
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using Fizzler.Systems.HtmlAgilityPack;
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using HtmlAgilityPack;
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@ -30,5 +32,33 @@ namespace PolyFeed.Helpers
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return selectedNode.Attributes[settings.Attribute].Value;
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}
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/// <summary>
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/// Searches for and converts all the links that are children of the current
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/// <see cref="HtmlNode" /> to absolute URIs.
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/// </summary>
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/// <param name="rootNode">The root node to search from.</param>
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/// <param name="baseUri">The base URI to use for conversion.</param>
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/// <returns>The number of nodes updated.</returns>
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public static int AbsolutifyUris(this HtmlNode rootNode, Uri baseUri)
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{
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int nodesUpdated = 0;
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Parallel.ForEach(rootNode.QuerySelectorAll("a, img"), (HtmlNode node) => {
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string attributeName = null;
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if (node.Attributes["href"] != null) attributeName = "href";
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if (node.Attributes["src"] != null) attributeName = "src";
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if (node.Attributes[attributeName] == null)
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return;
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node.Attributes[attributeName].Value = new Uri(
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baseUri,
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node.Attributes[attributeName].Value
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).ToString();
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Interlocked.Increment(ref nodesUpdated);
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});
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return nodesUpdated;
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}
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}
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}
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