private static string GetTrackbackUrl(string url, Document document)
{
// First try the Typepad
Node targetNode = document.DocumentNode.SelectSingleNode(".//div[@class=\"trackbacks-info\"]/p/span[@class=\"trackbacks-link\"]");
if (targetNode != null)
{
return(targetNode.InnerText);
}
// Then B2Evolution
targetNode = document.DocumentNode.SelectSingleNode(".//p[@class=\"trackback_url\"]/a");
if ((targetNode != null) && targetNode.HasAttributes)
{
return(targetNode.GetAttributeValue("href", null));
}
// And at last, check wordpress
targetNode = document.DocumentNode.SelectSingleNode("//meta[@name=\"generator\"]");
if (targetNode != null)
{
string generator = targetNode.GetAttributeValue("content", string.Empty).Trim();
if (generator.StartsWith("WordPress", StringComparison.OrdinalIgnoreCase))
{
return(url + (!url.EndsWith("/", StringComparison.OrdinalIgnoreCase) ? "/" : string.Empty) + "trackback/");
}
}
return(null);
}
private void ConvertContentTo(Node node, TextWriter outText)
{
foreach (var childNode in node.ChildNodes)
{
ConvertTo(childNode, outText);
}
}
private string GetContent(Document document)
{
string body = string.Empty;
try
{
Node bodyNode = document.DocumentNode.SelectSingleNode("//body");
Node contentNode = null;
if (bodyNode != null)
{
contentNode = TryToFindContentNode(bodyNode) ?? bodyNode;
}
if (bodyNode != null)
{
using (StringWriter writer = new StringWriter(Constants.CurrentCulture))
{
ConvertTo(contentNode, writer);
writer.Flush();
body = writer.ToString();
}
}
}
catch (NullReferenceException)
{
}
return(body.Trim('\t').Trim());
}
private void ConvertTo(Node node, TextWriter outText)
{
switch (node.NodeType)
{
case NodeType.Element:
{
string nodeName = node.Name;
if ((string.Compare(nodeName, "p", StringComparison.OrdinalIgnoreCase) == 0) ||
(string.Compare(nodeName, "br", StringComparison.OrdinalIgnoreCase) == 0) ||
(string.Compare(nodeName, "hr", StringComparison.OrdinalIgnoreCase) == 0))
{
outText.Write("\r\n");
}
if (string.Compare(nodeName, "h1", StringComparison.OrdinalIgnoreCase) != 0)
{
if (node.HasChildNodes)
{
ConvertContentTo(node, outText);
}
}
break;
}
case NodeType.Text:
{
string parentName = node.ParentNode.Name;
if ((string.Compare(parentName, "script", StringComparison.OrdinalIgnoreCase) == 0) ||
(string.Compare(parentName, "style", StringComparison.OrdinalIgnoreCase) == 0))
{
break;
}
string html = ((TextNode)node).Text;
if (Node.IsOverlappedClosingElement(html))
{
break;
}
DateTime parsedDateTime;
if (html.Trim().Length == 0 ||
html.Length > 2 && string.Compare(html.Substring(0, 3), "by ", StringComparison.OrdinalIgnoreCase) == 0 ||
DateTime.TryParse(html.Trim(), out parsedDateTime))
{
break;
}
outText.Write(Entity.DeEntitize(html));
break;
}
}
}
private static void RemoveUnwantedNodes(Node node)
{
if (Array.IndexOf(_allowedElements, node.Name) > -1)
{
foreach (Node childNode in node.ChildNodes)
{
RemoveUnwantedNodes(childNode);
}
}
else
{
node.ParentNode.RemoveChild(node, false);
}
}
private Node TryToFindContentNode(Node bodyNode)
{
Node contentNode = null;
foreach (string xPath in _xPaths)
{
contentNode = bodyNode.SelectSingleNode(xPath);
if (contentNode != null)
{
break;
}
}
return(contentNode);
}
private string GetContent(Document document)
{
Node bodyNode = document.DocumentNode.SelectSingleNode("//body");
Node contentNode = null;
if (bodyNode != null)
{
contentNode = TryToFindContentNode(bodyNode) ?? bodyNode;
}
string body;
using (StringWriter writer = new StringWriter(Constants.CurrentCulture))
{
ConvertTo(contentNode, writer);
writer.Flush();
body = writer.ToString();
}
return(body.Trim('\t').Trim());
}
private static string GetTitle(Document document)
{
Node titleNode = document.DocumentNode.SelectSingleNode("//title");
return((titleNode == null) ? null : titleNode.InnerText.Trim('\t').Trim());
}
//!pastedoc M:Sawmill.Rewriter.GetChildren``1(Sawmill.IRewriter{``0},``0)
/// <summary>
/// Get the immediate children of the value.
/// <seealso cref="M:Sawmill.IRewritable`1.GetChildren(System.Span{`0})" /></summary>
/// <example>
/// Given a representation of the expression <c>(1+2)+3</c>,
/// <code>
/// Expr expr = new Add(
/// new Add(
/// new Lit(1),
/// new Lit(2)
/// ),
/// new Lit(3)
/// );
/// </code><see cref="M:Sawmill.Rewriter.GetChildren``1(Sawmill.IRewriter{``0},``0)" /> returns the immediate children of the topmost node.
/// <code>
/// Expr[] expected = new[]
/// {
/// new Add(
/// new Lit(1),
/// new Lit(2)
/// ),
/// new Lit(3)
/// };
/// Assert.Equal(expected, rewriter.GetChildren(expr));
/// </code></example>
/// <param name="value">The value</param>
/// <returns>The immediate children of <paramref name="value" /></returns>
/// <seealso cref="M:Sawmill.Rewriter.GetChildren``1(Sawmill.IRewriter{``0},``0)"/>
public static global::HtmlAgilityPack.HtmlNode[] GetChildren(this global::HtmlAgilityPack.HtmlNode value)
=> HtmlNodeRewriter.Instance.GetChildren(value);
//!pastedoc M:Sawmill.Rewriter.SelfAndDescendantsBreadthFirst``1(Sawmill.IRewriter{``0},``0)
/// <summary>
/// Yields all of the nodes in the tree represented by <paramref name="value" /> in a breadth-first traversal order.
///
/// <para>
/// This is a breadth-first pre-order traversal.
/// </para></summary>
/// <param name="value">The value to traverse</param>
/// <returns>An enumerable containing all of the nodes in the tree represented by <paramref name="value" /> in a breadth-first traversal order.</returns>
/// <seealso cref="M:Sawmill.Rewriter.SelfAndDescendantsBreadthFirst``1(Sawmill.IRewriter{``0},``0)"/>
public static IEnumerable <global::HtmlAgilityPack.HtmlNode> SelfAndDescendantsBreadthFirst(this global::HtmlAgilityPack.HtmlNode value)
=> HtmlNodeRewriter.Instance.SelfAndDescendantsBreadthFirst(value);
//!pastedoc M:Sawmill.Rewriter.DescendantsAndSelf``1(Sawmill.IRewriter{``0},``0)
/// <summary>
/// Yields all of the nodes in the tree represented by <paramref name="value" />, starting at the bottom.
///
/// <para>
/// This is a depth-first post-order traversal.
/// </para><seealso cref="M:Sawmill.Rewriter.SelfAndDescendants``1(Sawmill.IRewriter{``0},``0)" /></summary>
/// <example>
/// <code>
/// Expr expr = new Add(
/// new Add(
/// new Lit(1),
/// new Lit(2)
/// ),
/// new Lit(3)
/// );
/// Expr[] expected = new[]
/// {
/// new Lit(1),
/// new Lit(2),
/// new Add(new Lit(1), new Lit(2)),
/// new Lit(3),
/// expr
/// };
/// Assert.Equal(expected, rewriter.DescendantsAndSelf(expr));
/// </code>
/// </example>
/// <param name="value">The value to traverse</param>
/// <returns>An enumerable containing all of the nodes in the tree represented by <paramref name="value" />, starting at the bottom.</returns>
/// <seealso cref="M:Sawmill.Rewriter.DescendantsAndSelf``1(Sawmill.IRewriter{``0},``0)"/>
public static IEnumerable <global::HtmlAgilityPack.HtmlNode> DescendantsAndSelf(this global::HtmlAgilityPack.HtmlNode value)
=> HtmlNodeRewriter.Instance.DescendantsAndSelf(value);
//!pastedoc M:Sawmill.IRewriter`1.SetChildren(System.ReadOnlySpan{`0},`0)
/// <summary>
/// Set the immediate children of the value.
/// <para>
/// Callers should ensure that <paramref name="newChildren" /> contains the same number of children as was returned by
/// <see cref="M:Sawmill.IRewriter`1.GetChildren(System.Span{`0},`0)" />.
/// </para><seealso cref="M:Sawmill.IRewritable`1.SetChildren(System.ReadOnlySpan{`0})" /></summary>
/// <example>
/// Given a representation of the expression <c>(1+2)+3</c>,
/// <code>
/// Expr expr = new Add(
/// new Add(
/// new Lit(1),
/// new Lit(2)
/// ),
/// new Lit(3)
/// );
/// </code><see cref="M:Sawmill.IRewriter`1.SetChildren(System.ReadOnlySpan{`0},`0)" /> replaces the immediate children of the topmost node.
/// <code>
/// Expr expected = new Add(
/// new Lit(4),
/// new Lit(5)
/// );
/// Assert.Equal(expected, rewriter.SetChildren(Children.Two(new Lit(4), new Lit(5)), expr));
/// </code></example>
/// <param name="newChildren">The new children</param>
/// <param name="value">The old value, whose immediate children should be replaced</param>
/// <returns>A copy of <paramref name="value" /> with updated children.</returns>
/// <seealso cref="M:Sawmill.IRewriter`1.SetChildren(System.ReadOnlySpan{`0},`0)"/>
public static global::HtmlAgilityPack.HtmlNode SetChildren(this global::HtmlAgilityPack.HtmlNode value, ReadOnlySpan <global::HtmlAgilityPack.HtmlNode> newChildren)
=> HtmlNodeRewriter.Instance.SetChildren(newChildren, value);
//!pastedoc M:Sawmill.IRewriter`1.GetChildren(System.Span{`0},`0)
/// <summary>
/// Copy the immediate children of the value into <paramref name="childrenReceiver" />.
/// <seealso cref="M:Sawmill.IRewritable`1.GetChildren(System.Span{`0})" /></summary>
/// <example>
/// Given a representation of the expression <c>(1+2)+3</c>,
/// <code>
/// Expr expr = new Add(
/// new Add(
/// new Lit(1),
/// new Lit(2)
/// ),
/// new Lit(3)
/// );
/// </code><see cref="M:Sawmill.IRewriter`1.GetChildren(System.Span{`0},`0)" /> copies the immediate children of the topmost node into the span.
/// <code>
/// Expr[] expected = new[]
/// {
/// new Add(
/// new Lit(1),
/// new Lit(2)
/// ),
/// new Lit(3)
/// };
/// var array = new Expr[rewriter.CountChildren(expr)];
/// rewriter.GetChildren(array, expr);
/// Assert.Equal(expected, array);
/// </code></example>
/// <param name="childrenReceiver">
/// A <see cref="T:System.Span`1" /> to copy <paramref name="value" />'s immediate children into.
/// The <see cref="T:System.Span`1" />'s <see cref="P:System.Span`1.Length" /> will be equal to the number returned by <see cref="M:Sawmill.IRewriter`1.CountChildren(`0)" />.
/// </param>
/// <param name="value">The value</param>
/// <seealso cref="M:Sawmill.IRewriter`1.GetChildren(System.Span{`0},`0)"/>
public static void GetChildren(this global::HtmlAgilityPack.HtmlNode value, Span <global::HtmlAgilityPack.HtmlNode> childrenReceiver)
=> HtmlNodeRewriter.Instance.GetChildren(childrenReceiver, value);
private string GetTitle(Document document)
{
Node titleNode = document.DocumentNode.SelectSingleNode("//title");
return((titleNode == null) ? null : titleNode.InnerText.Trim('\t').Replace(_titleFilters, string.Empty).Trim());
}
