HtmlNode GetStrippedForm(HtmlNode OriginalForm, List<string> InputElementStrings)
{
OriginalForm.RemoveAllChildren();
foreach (string InputElementString in InputElementStrings)
{
HTML InputHtml = new HTML(InputElementString);
OriginalForm.AppendChild(InputHtml.Html.DocumentNode.FirstChild);
}
return OriginalForm;
}
/// <summary>
/// Replaces all child nodes with the supplied nodes and indents them +1 tab.
/// </summary>
private void ReplaceAllChildren(HtmlNode parent, IEnumerable<HtmlNode> nodes)
{
// Preserve the indentation of the parent.
var parentScope = CreateTextNode();
var prev = parent.PreviousSibling;
if (prev == null && parent.ParentNode != null)
prev = parent.ParentNode.PreviousSibling;
if (prev != null && prev.NodeType == HtmlNodeType.Text)
{
var m = TabsAndSpaces.Match(prev.InnerText);
if (m.Success)
parentScope.InnerHtml += m.Value;
}
// Add one tab of indentation for the children.
var childScope = CreateTextNode(parentScope.InnerText + "\t");
// Replace all children with supplied nodes (indented).
parent.RemoveAllChildren();
foreach (var option in nodes)
{
parent.AppendChild(childScope);
parent.AppendChild(option);
}
// Put the closing tag at the same indentation as the opening tag.
parent.AppendChild(parentScope);
}
private HtmlNode FindTimetableRecursive(HtmlNode node, TextWriter outText)
{
if (HtmlNodeType.Element.Equals(node.NodeType))
{
switch (node.Name)
{
case "table":
if (mTitleFound)
{
foreach (HtmlAttribute attribute in node.Attributes.AttributesWithName("class"))
{
if (CLASS_TIMETABLE.Equals(attribute.Value))
{
outText.WriteLine("Found timetable!");
return node;
}
}
}
break;
case "td":
foreach (HtmlAttribute attribute in node.Attributes.AttributesWithName("class"))
{
if (CLASS_TITLE.Equals(attribute.Value))
{
switch (node.InnerText)
{
case TITLE_WEEKDAYS:
case TITLE_SATURDAY:
case TITLE_SUNDAY:
outText.WriteLine("Found " + node.InnerText + "!");
mWeekday = GetWeekdayEnum(node.InnerText);
mTitleFound = true;
break;
}
}
}
break;
default:
break;
}
}
foreach (HtmlNode subnode in node.ChildNodes)
{
HtmlNode tableNode = FindTimetableRecursive(subnode, outText);
if (tableNode != null)
{
return tableNode;
}
}
node.RemoveAllChildren();
return null;
}
/// <summary>
/// Tries to get the node.
/// </summary>
/// <param name="index">The index.</param>
/// <param name="node">The node.</param>
/// <returns>A boolean value.</returns>
private bool TryGetNode(int index, out HtmlNode node)
{
var n = XpathUtil.GetNode(_html, string.Format("//*[@diffengineindexer='{0}']", index));
node = null;
if (n != null)
{
// Create a deep copy of the html
node = n.CloneNode(true);
// Remove the attribute set by the scraper (used for indexing)
node.Attributes.Remove("diffengineindexer");
// Discard child elements
node.RemoveAllChildren();
}
return node != null;
}
/// <summary>
/// Filters the element, returns whether the element was removed.
/// </summary>
/// <param name="node"></param>
/// <returns></returns>
private bool filterElement(HtmlNode node)
{
if (ElementFilter.IsValid(node))
{
for(int i = 0; i < node.ChildNodes.Count; i++)
{
if (filterElement(node.ChildNodes[i]))
{
i--;
}
}
return false;
}
else
{
node.RemoveAllChildren();
node.Remove();
return true;
}
}
