How to export a blogspot blog to HTML/GitHub with C#

void Main()
{
    string filepath = @"C:\Downloads\Blog.xml";
    string text = File.ReadAllText(filepath);
    XDocument doc = XDocument.Parse(text);

    // Use XNamespaces to deal with those pesky "xmlns" attributes.
    // The underscore represents the default namespace.
    var _ = XNamespace.Get("http://www.w3.org/2005/Atom");
    var app = XNamespace.Get("http://purl.org/atom/app#");

    var posts = doc.Root.Elements(_+"entry")
        // An <entry> is either a post, or some bit of metadata no one cares about.
        // Exclude entries that don't have a child like <category term="...#post"/>
        .Where(entry => entry.Element(_+"category").Attribute("term").ToString().Contains("#post"))
        // Exclude any entries with an <app:draft> element except <app:draft>no</app:draft>
        .Where(entry => !entry.Descendants(app+"draft").Any(draft => draft.Value != "no"));

    var outfolder = Path.Combine(Path.GetDirectoryName(filepath), Path.GetFileNameWithoutExtension(filepath));
    Directory.CreateDirectory(outfolder);

    foreach (var entry in posts)
    {
       // Extract data from XML
        DateTime published = DateTime.Parse(entry.Element(_+"published").Value);
        DateTime updated = DateTime.Parse(entry.Element(_+"updated").Value);
        string title = entry.Element(_+"title").Value;
        string content = entry.Element(_+"content").Value;
        string type = entry.Element(_+"content").Attribute("type").Value ?? "html";
        XElement empty = new XElement("empty");
        XAttribute emptA = new XAttribute("empty","");
        string originalLink = ((entry.Elements(_+"link")
            .FirstOrDefault(e => e.Attribute("rel").Value == "alternate") ?? empty)
            .Attribute("href") ?? emptA).Value;
        string outFileName = string.Format("{0:yyyy-MM-dd}-{1}.{2}", published,
               Path.GetFileNameWithoutExtension(originalLink), type);
        var outPath = Path.Combine(outfolder, outFileName);

        if (content.Count(c => c == '\n') <= 3)
            content = AddLineBreaks(content); // optional

        // Write output file (partial HTML for Jekyll)
        using (StreamWriter output = File.CreateText(outPath)) {
            output.WriteLine("---");
            output.WriteLine("title: \"{0}\"", title);
            output.WriteLine("layout: post");
            output.WriteLine("# Pulled from Blogger. Last updated there on: {0:yyyy-MM-dd}", updated);
            output.WriteLine("---");
            if (originalLink != "")
                output.WriteLine("<small><p><i>This post was imported from "+
                 "<a href='{0}'>blogspot</a>.</i></p></small>", originalLink);
            output.WriteLine(""); // Disable Jekyll/Liquid
            output.Write(content);
            output.WriteLine("");
        }
    }
}

2007-09-03-hello-no-one.html
2011-07-05-why-wpf-sucks.html
2012-06-07-smart-tabs.html
2013-05-28-onward.html

string AddLineBreaks(string content)
{
    var sb = new StringBuilder(content.Length + 100);

    bool pre = false, fail;
    for (UString rest = content; !rest.IsEmpty;) {
        if (rest.StartsWith("<pre")) pre = true;
        if (rest.StartsWith("</pre")) pre = false;
        bool s;
        if ((s = rest.StartsWith("<br />")) || rest.StartsWith("<br/>")) {
            sb.Append(pre ? "\n" : "<br/>\n");
            rest = rest.Substring(s ? 6 : 5);
            continue;
        }
        if (rest.StartsWith("<li>") || rest.StartsWith("<p>") || rest.StartsWith("<tr>") || rest.StartsWith("<pre>") || rest.StartsWith("<blockquote>") || rest.StartsWith("<img"))
            sb.Append('\n');
        if (rest.StartsWith("</ul>") || rest.StartsWith("</ol>") || rest.StartsWith("</blockquote>"))
            sb.Append('\n');
        char c = (char)rest.PopFront(out fail);
        if (!fail) sb.Append(c);
    }

    return sb.ToString();
}