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Diffstat (limited to 'mcs/class/System.Web/Test/mainsoft/MainsoftWebTest/HtmlAgilityPack/HtmlNode.cs')
| -rw-r--r-- | mcs/class/System.Web/Test/mainsoft/MainsoftWebTest/HtmlAgilityPack/HtmlNode.cs | 2259 |
1 files changed, 0 insertions, 2259 deletions
diff --git a/mcs/class/System.Web/Test/mainsoft/MainsoftWebTest/HtmlAgilityPack/HtmlNode.cs b/mcs/class/System.Web/Test/mainsoft/MainsoftWebTest/HtmlAgilityPack/HtmlNode.cs deleted file mode 100644 index 2ae9c051069..00000000000 --- a/mcs/class/System.Web/Test/mainsoft/MainsoftWebTest/HtmlAgilityPack/HtmlNode.cs +++ /dev/null @@ -1,2259 +0,0 @@ -// HtmlAgilityPack V1.0 - Simon Mourier <simonm@microsoft.com> -using System; -using System.Collections; -using System.IO; -using System.Xml; -using System.Xml.XPath; - -namespace HtmlAgilityPack -{ - /// <summary> - /// Flags that describe the behavior of an Element node. - /// </summary> - public enum HtmlElementFlag - { - /// <summary> - /// The node is a CDATA node. - /// </summary> - CData = 1, - - /// <summary> - /// The node is empty. META or IMG are example of such nodes. - /// </summary> - Empty = 2, - - /// <summary> - /// The node will automatically be closed during parsing. - /// </summary> - Closed = 4, - - /// <summary> - /// The node can overlap. - /// </summary> - CanOverlap = 8 - } - - /// <summary> - /// Represents the type of a node. - /// </summary> - public enum HtmlNodeType - { - /// <summary> - /// The root of a document. - /// </summary> - Document, - - /// <summary> - /// An HTML element. - /// </summary> - Element, - - /// <summary> - /// An HTML comment. - /// </summary> - Comment, - - /// <summary> - /// A text node is always the child of an element or a document node. - /// </summary> - Text, - } - - /// <summary> - /// Represents an HTML node. - /// </summary> - public class HtmlNode: IXPathNavigable - { - /// <summary> - /// Gets the name of a comment node. It is actually defined as '#comment'. - /// </summary> - public static readonly string HtmlNodeTypeNameComment = "#comment"; - - /// <summary> - /// Gets the name of the document node. It is actually defined as '#document'. - /// </summary> - public static readonly string HtmlNodeTypeNameDocument = "#document"; - - /// <summary> - /// Gets the name of a text node. It is actually defined as '#text'. - /// </summary> - public static readonly string HtmlNodeTypeNameText = "#text"; - - /// <summary> - /// Gets a collection of flags that define specific behaviors for specific element nodes. - /// The table contains a DictionaryEntry list with the lowercase tag name as the Key, and a combination of HtmlElementFlags as the Value. - /// </summary> - public static Hashtable ElementsFlags; - - internal HtmlNodeType _nodetype; - internal HtmlNode _nextnode; - internal HtmlNode _prevnode; - internal HtmlNode _parentnode; - internal HtmlDocument _ownerdocument; - internal HtmlNodeCollection _childnodes; - internal HtmlAttributeCollection _attributes; - internal int _line = 0; - internal int _lineposition = 0; - internal int _streamposition = 0; - internal int _innerstartindex = 0; - internal int _innerlength = 0; - internal int _outerstartindex = 0; - internal int _outerlength = 0; - internal int _namestartindex = 0; - internal int _namelength = 0; - internal bool _starttag = false; - internal string _name; - internal HtmlNode _prevwithsamename = null; - internal HtmlNode _endnode; - - internal bool _innerchanged = false; - internal bool _outerchanged = false; - internal string _innerhtml; - internal string _outerhtml; - - static HtmlNode() - { - // tags whose content may be anything - ElementsFlags = new Hashtable(); - ElementsFlags.Add("script", HtmlElementFlag.CData); - ElementsFlags.Add("style", HtmlElementFlag.CData); - ElementsFlags.Add("noxhtml", HtmlElementFlag.CData); - - // tags that can not contain other tags - ElementsFlags.Add("base", HtmlElementFlag.Empty); - ElementsFlags.Add("link", HtmlElementFlag.Empty); - ElementsFlags.Add("meta", HtmlElementFlag.Empty); - ElementsFlags.Add("isindex", HtmlElementFlag.Empty); - ElementsFlags.Add("hr", HtmlElementFlag.Empty); - ElementsFlags.Add("col", HtmlElementFlag.Empty); - ElementsFlags.Add("img", HtmlElementFlag.Empty); - ElementsFlags.Add("param", HtmlElementFlag.Empty); - ElementsFlags.Add("embed", HtmlElementFlag.Empty); - ElementsFlags.Add("frame", HtmlElementFlag.Empty); - ElementsFlags.Add("wbr", HtmlElementFlag.Empty); - ElementsFlags.Add("bgsound", HtmlElementFlag.Empty); - ElementsFlags.Add("spacer", HtmlElementFlag.Empty); - ElementsFlags.Add("keygen", HtmlElementFlag.Empty); - ElementsFlags.Add("area", HtmlElementFlag.Empty); - ElementsFlags.Add("input", HtmlElementFlag.Empty); - ElementsFlags.Add("basefont", HtmlElementFlag.Empty); - - ElementsFlags.Add("form", HtmlElementFlag.CanOverlap | HtmlElementFlag.Empty); - - // they sometimes contain, and sometimes they don 't... - ElementsFlags.Add("option", HtmlElementFlag.Empty); - - // tag whose closing tag is equivalent to open tag: - // <p>bla</p>bla will be transformed into <p>bla</p>bla - // <p>bla<p>bla will be transformed into <p>bla<p>bla and not <p>bla></p><p>bla</p> or <p>bla<p>bla</p></p> - //<br> see above - ElementsFlags.Add("br", HtmlElementFlag.Empty | HtmlElementFlag.Closed); - ElementsFlags.Add("p", HtmlElementFlag.Empty | HtmlElementFlag.Closed); - } - - /// <summary> - /// Determines if an element node is closed. - /// </summary> - /// <param name="name">The name of the element node to check. May not be null.</param> - /// <returns>true if the name is the name of a closed element node, false otherwise.</returns> - public static bool IsClosedElement(string name) - { - if (name == null) - { - throw new ArgumentNullException("name"); - } - - object flag = ElementsFlags[name.ToLower()]; - if (flag == null) - { - return false; - } - return (((HtmlElementFlag)flag)&HtmlElementFlag.Closed) != 0; - } - - /// <summary> - /// Determines if an element node can be kept overlapped. - /// </summary> - /// <param name="name">The name of the element node to check. May not be null.</param> - /// <returns>true if the name is the name of an element node that can be kept overlapped, false otherwise.</returns> - public static bool CanOverlapElement(string name) - { - if (name == null) - { - throw new ArgumentNullException("name"); - } - - object flag = ElementsFlags[name.ToLower()]; - if (flag == null) - { - return false; - } - return (((HtmlElementFlag)flag)&HtmlElementFlag.CanOverlap) != 0; - } - - /// <summary> - /// Determines if a text corresponds to the closing tag of an node that can be kept overlapped. - /// </summary> - /// <param name="text">The text to check. May not be null.</param> - /// <returns>true or false.</returns> - public static bool IsOverlappedClosingElement(string text) - { - if (text == null) - { - throw new ArgumentNullException("text"); - } - // min is </x>: 4 - if (text.Length <= 4) - return false; - - if ((text[0] != '<') || - (text[text.Length - 1] != '>') || - (text[1] != '/')) - return false; - - string name = text.Substring(2, text.Length - 3); - return CanOverlapElement(name); - } - - /// <summary> - /// Determines if an element node is a CDATA element node. - /// </summary> - /// <param name="name">The name of the element node to check. May not be null.</param> - /// <returns>true if the name is the name of a CDATA element node, false otherwise.</returns> - public static bool IsCDataElement(string name) - { - if (name == null) - { - throw new ArgumentNullException("name"); - } - - object flag = ElementsFlags[name.ToLower()]; - if (flag == null) - { - return false; - } - return (((HtmlElementFlag)flag)&HtmlElementFlag.CData) != 0; - } - - /// <summary> - /// Determines if an element node is defined as empty. - /// </summary> - /// <param name="name">The name of the element node to check. May not be null.</param> - /// <returns>true if the name is the name of an empty element node, false otherwise.</returns> - public static bool IsEmptyElement(string name) - { - if (name == null) - { - throw new ArgumentNullException("name"); - } - - if (name.Length == 0) - { - return true; - } - - // <!DOCTYPE ... - if ('!' == name[0]) - { - return true; - } - - // <?xml ... - if ('?' == name[0]) - { - return true; - } - - object flag = ElementsFlags[name.ToLower()]; - if (flag == null) - { - return false; - } - return (((HtmlElementFlag)flag)&HtmlElementFlag.Empty) != 0; - } - - /// <summary> - /// Creates an HTML node from a string representing literal HTML. - /// </summary> - /// <param name="html">The HTML text.</param> - /// <returns>The newly created node instance.</returns> - public static HtmlNode CreateNode(string html) - { - // REVIEW: this is *not* optimum... - HtmlDocument doc = new HtmlDocument(); - doc.LoadHtml(html); - return doc.DocumentNode.FirstChild; - } - - /// <summary> - /// Creates a duplicate of the node and the subtree under it. - /// </summary> - /// <param name="node">The node to duplicate. May not be null.</param> - public void CopyFrom(HtmlNode node) - { - CopyFrom(node, true); - } - - /// <summary> - /// Creates a duplicate of the node. - /// </summary> - /// <param name="node">The node to duplicate. May not be null.</param> - /// <param name="deep">true to recursively clone the subtree under the specified node, false to clone only the node itself.</param> - public void CopyFrom(HtmlNode node, bool deep) - { - if (node == null) - { - throw new ArgumentNullException("node"); - } - - Attributes.RemoveAll(); - if (node.HasAttributes) - { - foreach(HtmlAttribute att in node.Attributes) - { - SetAttributeValue(att.Name, att.Value); - } - } - - if (!deep) - { - RemoveAllChildren(); - if (node.HasChildNodes) - { - foreach(HtmlNode child in node.ChildNodes) - { - AppendChild(child.CloneNode(true)); - } - } - } - } - - internal HtmlNode(HtmlNodeType type, HtmlDocument ownerdocument, int index) - { - _nodetype = type; - _ownerdocument = ownerdocument; - _outerstartindex = index; - - switch(type) - { - case HtmlNodeType.Comment: - _name = HtmlNodeTypeNameComment; - _endnode = this; - break; - - case HtmlNodeType.Document: - _name = HtmlNodeTypeNameDocument; - _endnode = this; - break; - - case HtmlNodeType.Text: - _name = HtmlNodeTypeNameText; - _endnode = this; - break; - } - - if (_ownerdocument._openednodes != null) - { - if (!Closed) - { - // we use the index as the key - - // -1 means the node comes from public - if (-1 != index) - { - _ownerdocument._openednodes.Add(index, this); - } - } - } - - if ((-1 == index) && (type != HtmlNodeType.Comment) && (type != HtmlNodeType.Text)) - { - // innerhtml and outerhtml must be calculated - _outerchanged = true; - _innerchanged = true; - } - } - - internal void CloseNode(HtmlNode endnode) - { - if (!_ownerdocument.OptionAutoCloseOnEnd) - { - // close all children - if (_childnodes != null) - { - foreach(HtmlNode child in _childnodes) - { - if (child.Closed) - continue; - - // create a fake closer node - HtmlNode close = new HtmlNode(NodeType, _ownerdocument, -1); - close._endnode = close; - child.CloseNode(close); - } - } - } - - if (!Closed) - { - _endnode = endnode; - - if (_ownerdocument._openednodes != null) - { - _ownerdocument._openednodes.Remove(_outerstartindex); - } - - HtmlNode self = _ownerdocument._lastnodes[Name] as HtmlNode; - if (self == this) - { - _ownerdocument._lastnodes.Remove(Name); - _ownerdocument.UpdateLastParentNode(); - } - - if (endnode == this) - return; - - // create an inner section - _innerstartindex = _outerstartindex + _outerlength; - _innerlength = endnode._outerstartindex - _innerstartindex; - - // update full length - _outerlength = (endnode._outerstartindex + endnode._outerlength) - _outerstartindex; - } - } - - internal HtmlNode EndNode - { - get - { - return _endnode; - } - } - - internal string GetId() - { - HtmlAttribute att = Attributes["id"]; - if (att == null) - { - return null; - } - return att.Value; - } - - internal void SetId(string id) - { - HtmlAttribute att = Attributes["id"]; - if (att == null) - { - att = _ownerdocument.CreateAttribute("id"); - } - att.Value = id; - _ownerdocument.SetIdForNode(this, att.Value); - _outerchanged = true; - } - - /// <summary> - /// Creates a new XPathNavigator object for navigating this HTML node. - /// </summary> - /// <returns>An XPathNavigator object. The XPathNavigator is positioned on the node from which the method was called. It is not positioned on the root of the document.</returns> - public XPathNavigator CreateNavigator() - { - return new HtmlNodeNavigator(_ownerdocument, this); - } - - /// <summary> - /// Selects the first XmlNode that matches the XPath expression. - /// </summary> - /// <param name="xpath">The XPath expression. May not be null.</param> - /// <returns>The first HtmlNode that matches the XPath query or a null reference if no matching node was found.</returns> - public HtmlNode SelectSingleNode(string xpath) - { - if (xpath == null) - { - throw new ArgumentNullException("xpath"); - } - - HtmlNodeNavigator nav = new HtmlNodeNavigator(_ownerdocument, this); - XPathNodeIterator it = nav.Select(xpath); - if (!it.MoveNext()) - { - return null; - } - - HtmlNodeNavigator node = (HtmlNodeNavigator)it.Current; - return node.CurrentNode; - } - - /// <summary> - /// Selects a list of nodes matching the XPath expression. - /// </summary> - /// <param name="xpath">The XPath expression.</param> - /// <returns>An HtmlNodeCollection containing a collection of nodes matching the XPath query, or null if no node matched the XPath expression.</returns> - public HtmlNodeCollection SelectNodes(string xpath) - { - HtmlNodeCollection list = new HtmlNodeCollection(null); - - HtmlNodeNavigator nav = new HtmlNodeNavigator(_ownerdocument, this); - XPathNodeIterator it = nav.Select(xpath); - while (it.MoveNext()) - { - HtmlNodeNavigator n = (HtmlNodeNavigator)it.Current; - list.Add(n.CurrentNode); - } - if (list.Count == 0) - { - return null; - } - return list; - } - - /// <summary> - /// Gets or sets the value of the 'id' HTML attribute. The document must have been parsed using the OptionUseIdAttribute set to true. - /// </summary> - public string Id - { - get - { - if (_ownerdocument._nodesid == null) - { - throw new Exception(HtmlDocument.HtmlExceptionUseIdAttributeFalse); - } - return GetId(); - } - set - { - if (_ownerdocument._nodesid == null) - { - throw new Exception(HtmlDocument.HtmlExceptionUseIdAttributeFalse); - } - - if (value == null) - { - throw new ArgumentNullException("value"); - } - SetId(value); - } - } - - /// <summary> - /// Gets the line number of this node in the document. - /// </summary> - public int Line - { - get - { - return _line; - } - } - - /// <summary> - /// Gets the column number of this node in the document. - /// </summary> - public int LinePosition - { - get - { - return _lineposition; - } - } - - /// <summary> - /// Gets the stream position of this node in the document, relative to the start of the document. - /// </summary> - public int StreamPosition - { - get - { - return _streamposition; - } - } - - /// <summary> - /// Gets a value indicating if this node has been closed or not. - /// </summary> - public bool Closed - { - get - { - return (_endnode != null); - } - } - - /// <summary> - /// Gets or sets this node's name. - /// </summary> - public string Name - { - get - { - if (_name == null) - { - _name = _ownerdocument._text.Substring(_namestartindex, _namelength).ToLower(); - } - return _name; - } - set - { - _name = value; - } - } - - /// <summary> - /// Gets or Sets the text between the start and end tags of the object. - /// </summary> - public virtual string InnerText - { - get - { - if (_nodetype == HtmlNodeType.Text) - { - return ((HtmlTextNode)this).Text; - } - - if (_nodetype == HtmlNodeType.Comment) - { - return ((HtmlCommentNode)this).Comment; - } - - // note: right now, this method is *slow*, because we recompute everything. - // it could be optimised like innerhtml - if (!HasChildNodes) - { - return string.Empty; - } - - string s = null; - foreach(HtmlNode node in ChildNodes) - { - s += node.InnerText; - } - return s; - } - } - - /// <summary> - /// Gets or Sets the HTML between the start and end tags of the object. - /// </summary> - public virtual string InnerHtml - { - get - { - if (_innerchanged) - { - _innerhtml = WriteContentTo(); - _innerchanged = false; - return _innerhtml; - } - if (_innerhtml != null) - { - return _innerhtml; - } - - if (_innerstartindex < 0) - { - return string.Empty; - } - - return _ownerdocument._text.Substring(_innerstartindex, _innerlength); - } - set - { - HtmlDocument doc = new HtmlDocument(); - doc.LoadHtml(value); - - RemoveAllChildren(); - AppendChildren(doc.DocumentNode.ChildNodes); - } - } - - /// <summary> - /// Gets or Sets the object and its content in HTML. - /// </summary> - public virtual string OuterHtml - { - get - { - if (_outerchanged) - { - _outerhtml = WriteTo(); - _outerchanged = false; - return _outerhtml; - } - - if (_outerhtml != null) - { - return _outerhtml; - } - - if (_outerstartindex < 0) - { - return string.Empty; - } - - return _ownerdocument._text.Substring(_outerstartindex, _outerlength); - } - } - - /// <summary> - /// Creates a duplicate of the node - /// </summary> - /// <returns></returns> - public HtmlNode Clone() - { - return CloneNode(true); - } - - /// <summary> - /// Creates a duplicate of the node and changes its name at the same time. - /// </summary> - /// <param name="newName">The new name of the cloned node. May not be null.</param> - /// <returns>The cloned node.</returns> - public HtmlNode CloneNode(string newName) - { - return CloneNode(newName, true); - } - - /// <summary> - /// Creates a duplicate of the node and changes its name at the same time. - /// </summary> - /// <param name="newName">The new name of the cloned node. May not be null.</param> - /// <param name="deep">true to recursively clone the subtree under the specified node; false to clone only the node itself.</param> - /// <returns>The cloned node.</returns> - public HtmlNode CloneNode(string newName, bool deep) - { - if (newName == null) - { - throw new ArgumentNullException("newName"); - } - - HtmlNode node = CloneNode(deep); - node._name = newName; - return node; - } - - /// <summary> - /// Creates a duplicate of the node. - /// </summary> - /// <param name="deep">true to recursively clone the subtree under the specified node; false to clone only the node itself.</param> - /// <returns>The cloned node.</returns> - public HtmlNode CloneNode(bool deep) - { - HtmlNode node = _ownerdocument.CreateNode(_nodetype); - node._name = Name; - - switch(_nodetype) - { - case HtmlNodeType.Comment: - ((HtmlCommentNode)node).Comment = ((HtmlCommentNode)this).Comment; - return node; - - case HtmlNodeType.Text: - ((HtmlTextNode)node).Text = ((HtmlTextNode)this).Text; - return node; - } - - // attributes - if (HasAttributes) - { - foreach(HtmlAttribute att in _attributes) - { - HtmlAttribute newatt = att.Clone(); - node.Attributes.Append(newatt); - } - } - - // closing attributes - if (HasClosingAttributes) - { - node._endnode = _endnode.CloneNode(false); - foreach(HtmlAttribute att in _endnode._attributes) - { - HtmlAttribute newatt = att.Clone(); - node._endnode._attributes.Append(newatt); - } - } - if (!deep) - { - return node; - } - - if (!HasChildNodes) - { - return node; - } - - // child nodes - foreach(HtmlNode child in _childnodes) - { - HtmlNode newchild = child.Clone(); - node.AppendChild(newchild); - } - return node; - } - - /// <summary> - /// Gets the HTML node immediately following this element. - /// </summary> - public HtmlNode NextSibling - { - get - { - return _nextnode; - } - } - - /// <summary> - /// Gets the node immediately preceding this node. - /// </summary> - public HtmlNode PreviousSibling - { - get - { - return _prevnode; - } - } - - /// <summary> - /// Removes all the children and/or attributes of the current node. - /// </summary> - public void RemoveAll() - { - RemoveAllChildren(); - - if (HasAttributes) - { - _attributes.Clear(); - } - - if ((_endnode != null) && (_endnode != this)) - { - if (_endnode._attributes != null) - { - _endnode._attributes.Clear(); - } - } - _outerchanged = true; - _innerchanged = true; - } - - /// <summary> - /// Removes all the children of the current node. - /// </summary> - public void RemoveAllChildren() - { - if (!HasChildNodes) - { - return; - } - - if (_ownerdocument.OptionUseIdAttribute) - { - // remove nodes from id list - foreach(HtmlNode node in _childnodes) - { - _ownerdocument.SetIdForNode(null, node.GetId()); - } - } - _childnodes.Clear(); - _outerchanged = true; - _innerchanged = true; - } - - /// <summary> - /// Removes the specified child node. - /// </summary> - /// <param name="oldChild">The node being removed. May not be null.</param> - /// <returns>The node removed.</returns> - public HtmlNode RemoveChild(HtmlNode oldChild) - { - if (oldChild == null) - { - throw new ArgumentNullException("oldChild"); - } - - int index = -1; - - if (_childnodes != null) - { - index = _childnodes[oldChild]; - } - - if (index == -1) - { - throw new ArgumentException(HtmlDocument.HtmlExceptionRefNotChild); - } - - _childnodes.Remove(index); - - _ownerdocument.SetIdForNode(null, oldChild.GetId()); - _outerchanged = true; - _innerchanged = true; - return oldChild; - } - - /// <summary> - /// Removes the specified child node. - /// </summary> - /// <param name="oldChild">The node being removed. May not be null.</param> - /// <param name="keepGrandChildren">true to keep grand children of the node, false otherwise.</param> - /// <returns>The node removed.</returns> - public HtmlNode RemoveChild(HtmlNode oldChild, bool keepGrandChildren) - { - if (oldChild == null) - { - throw new ArgumentNullException("oldChild"); - } - - if ((oldChild._childnodes != null) && keepGrandChildren) - { - // get prev sibling - HtmlNode prev = oldChild.PreviousSibling; - - // reroute grand children to ourselves - foreach(HtmlNode grandchild in oldChild._childnodes) - { - InsertAfter(grandchild, prev); - } - } - RemoveChild(oldChild); - _outerchanged = true; - _innerchanged = true; - return oldChild; - } - - /// <summary> - /// Replaces the child node oldChild with newChild node. - /// </summary> - /// <param name="newChild">The new node to put in the child list.</param> - /// <param name="oldChild">The node being replaced in the list.</param> - /// <returns>The node replaced.</returns> - public HtmlNode ReplaceChild(HtmlNode newChild, HtmlNode oldChild) - { - if (newChild == null) - { - return RemoveChild(oldChild); - } - - if (oldChild == null) - { - return AppendChild(newChild); - } - - int index = -1; - - if (_childnodes != null) - { - index = _childnodes[oldChild]; - } - - if (index == -1) - { - throw new ArgumentException(HtmlDocument.HtmlExceptionRefNotChild); - } - - _childnodes.Replace(index, newChild); - - _ownerdocument.SetIdForNode(null, oldChild.GetId()); - _ownerdocument.SetIdForNode(newChild, newChild.GetId()); - _outerchanged = true; - _innerchanged = true; - return newChild; - } - - /// <summary> - /// Inserts the specified node immediately before the specified reference node. - /// </summary> - /// <param name="newChild">The node to insert. May not be null.</param> - /// <param name="refChild">The node that is the reference node. The newChild is placed before this node.</param> - /// <returns>The node being inserted.</returns> - public HtmlNode InsertBefore(HtmlNode newChild, HtmlNode refChild) - { - if (newChild == null) - { - throw new ArgumentNullException("newChild"); - } - - if (refChild == null) - { - return AppendChild(newChild); - } - - if (newChild == refChild) - { - return newChild; - } - - int index = -1; - - if (_childnodes != null) - { - index = _childnodes[refChild]; - } - - if (index == -1) - { - throw new ArgumentException(HtmlDocument.HtmlExceptionRefNotChild); - } - - _childnodes.Insert(index, newChild); - - _ownerdocument.SetIdForNode(newChild, newChild.GetId()); - _outerchanged = true; - _innerchanged = true; - return newChild; - } - - /// <summary> - /// Inserts the specified node immediately after the specified reference node. - /// </summary> - /// <param name="newChild">The node to insert. May not be null.</param> - /// <param name="refChild">The node that is the reference node. The newNode is placed after the refNode.</param> - /// <returns>The node being inserted.</returns> - public HtmlNode InsertAfter(HtmlNode newChild, HtmlNode refChild) - { - if (newChild == null) - { - throw new ArgumentNullException("newChild"); - } - - if (refChild == null) - { - return PrependChild(newChild); - } - - if (newChild == refChild) - { - return newChild; - } - - int index = -1; - - if (_childnodes != null) - { - index = _childnodes[refChild]; - } - if (index == -1) - { - throw new ArgumentException(HtmlDocument.HtmlExceptionRefNotChild); - } - - _childnodes.Insert(index + 1, newChild); - - _ownerdocument.SetIdForNode(newChild, newChild.GetId()); - _outerchanged = true; - _innerchanged = true; - return newChild; - } - - /// <summary> - /// Gets the first child of the node. - /// </summary> - public HtmlNode FirstChild - { - get - { - if (!HasChildNodes) - { - return null; - } - return _childnodes[0]; - } - } - - /// <summary> - /// Gets the last child of the node. - /// </summary> - public HtmlNode LastChild - { - get - { - if (!HasChildNodes) - { - return null; - } - return _childnodes[_childnodes.Count-1]; - } - } - - /// <summary> - /// Gets the type of this node. - /// </summary> - public HtmlNodeType NodeType - { - get - { - return _nodetype; - } - } - - /// <summary> - /// Gets the parent of this node (for nodes that can have parents). - /// </summary> - public HtmlNode ParentNode - { - get - { - return _parentnode; - } - } - - /// <summary> - /// Gets the HtmlDocument to which this node belongs. - /// </summary> - public HtmlDocument OwnerDocument - { - get - { - return _ownerdocument; - } - } - - /// <summary> - /// Gets all the children of the node. - /// </summary> - public HtmlNodeCollection ChildNodes - { - get - { - if (_childnodes == null) - { - _childnodes = new HtmlNodeCollection(this); - } - return _childnodes; - } - } - - /// <summary> - /// Adds the specified node to the beginning of the list of children of this node. - /// </summary> - /// <param name="newChild">The node to add. May not be null.</param> - /// <returns>The node added.</returns> - public HtmlNode PrependChild(HtmlNode newChild) - { - if (newChild == null) - { - throw new ArgumentNullException("newChild"); - } - ChildNodes.Prepend(newChild); - _ownerdocument.SetIdForNode(newChild, newChild.GetId()); - _outerchanged = true; - _innerchanged = true; - return newChild; - } - - /// <summary> - /// Adds the specified node list to the beginning of the list of children of this node. - /// </summary> - /// <param name="newChildren">The node list to add. May not be null.</param> - public void PrependChildren(HtmlNodeCollection newChildren) - { - if (newChildren == null) - { - throw new ArgumentNullException("newChildren"); - } - - foreach(HtmlNode newChild in newChildren) - { - PrependChild(newChild); - } - } - - /// <summary> - /// Adds the specified node to the end of the list of children of this node. - /// </summary> - /// <param name="newChild">The node to add. May not be null.</param> - /// <returns>The node added.</returns> - public HtmlNode AppendChild(HtmlNode newChild) - { - if (newChild == null) - { - throw new ArgumentNullException("newChild"); - } - - ChildNodes.Append(newChild); - _ownerdocument.SetIdForNode(newChild, newChild.GetId()); - _outerchanged = true; - _innerchanged = true; - return newChild; - } - - /// <summary> - /// Adds the specified node to the end of the list of children of this node. - /// </summary> - /// <param name="newChildren">The node list to add. May not be null.</param> - public void AppendChildren(HtmlNodeCollection newChildren) - { - if (newChildren == null) - throw new ArgumentNullException("newChildrend"); - - foreach(HtmlNode newChild in newChildren) - { - AppendChild(newChild); - } - } - - /// <summary> - /// Gets a value indicating whether the current node has any attributes. - /// </summary> - public bool HasAttributes - { - get - { - if (_attributes == null) - { - return false; - } - - if (_attributes.Count <= 0) - { - return false; - } - return true; - } - } - - /// <summary> - /// Gets a value indicating whether the current node has any attributes on the closing tag. - /// </summary> - public bool HasClosingAttributes - { - get - { - if ((_endnode == null) || (_endnode == this)) - { - return false; - } - - if (_endnode._attributes == null) - { - return false; - } - - if (_endnode._attributes.Count <= 0) - { - return false; - } - return true; - } - } - - /// <summary> - /// Gets a value indicating whether this node has any child nodes. - /// </summary> - public bool HasChildNodes - { - get - { - if (_childnodes == null) - { - return false; - } - - if (_childnodes.Count <= 0) - { - return false; - } - return true; - } - } - - /// <summary> - /// Helper method to get the value of an attribute of this node. If the attribute is not found, the default value will be returned. - /// </summary> - /// <param name="name">The name of the attribute to get. May not be null.</param> - /// <param name="def">The default value to return if not found.</param> - /// <returns>The value of the attribute if found, the default value if not found.</returns> - public string GetAttributeValue(string name, string def) - { - if (name == null) - { - throw new ArgumentNullException("name"); - } - - if (!HasAttributes) - { - return def; - } - HtmlAttribute att = Attributes[name]; - if (att == null) - { - return def; - } - return att.Value; - } - - /// <summary> - /// Helper method to get the value of an attribute of this node. If the attribute is not found, the default value will be returned. - /// </summary> - /// <param name="name">The name of the attribute to get. May not be null.</param> - /// <param name="def">The default value to return if not found.</param> - /// <returns>The value of the attribute if found, the default value if not found.</returns> - public int GetAttributeValue(string name, int def) - { - if (name == null) - { - throw new ArgumentNullException("name"); - } - - if (!HasAttributes) - { - return def; - } - HtmlAttribute att = Attributes[name]; - if (att == null) - { - return def; - } - try - { - return Convert.ToInt32(att.Value); - } - catch - { - return def; - } - } - - /// <summary> - /// Helper method to get the value of an attribute of this node. If the attribute is not found, the default value will be returned. - /// </summary> - /// <param name="name">The name of the attribute to get. May not be null.</param> - /// <param name="def">The default value to return if not found.</param> - /// <returns>The value of the attribute if found, the default value if not found.</returns> - public bool GetAttributeValue(string name, bool def) - { - if (name == null) - { - throw new ArgumentNullException("name"); - } - - if (!HasAttributes) - { - return def; - } - HtmlAttribute att = Attributes[name]; - if (att == null) - { - return def; - } - try - { - return Convert.ToBoolean(att.Value); - } - catch - { - return def; - } - } - - /// <summary> - /// Helper method to set the value of an attribute of this node. If the attribute is not found, it will be created automatically. - /// </summary> - /// <param name="name">The name of the attribute to set. May not be null.</param> - /// <param name="value">The value for the attribute.</param> - /// <returns>The corresponding attribute instance.</returns> - public HtmlAttribute SetAttributeValue(string name, string value) - { - if (name == null) - { - throw new ArgumentNullException("name"); - } - HtmlAttribute att = Attributes[name]; - if (att == null) - { - return Attributes.Append(_ownerdocument.CreateAttribute(name, value)); - } - att.Value = value; - return att; - } - - /// <summary> - /// Gets the collection of HTML attributes for this node. May not be null. - /// </summary> - public HtmlAttributeCollection Attributes - { - get - { - if (!HasAttributes) - { - _attributes = new HtmlAttributeCollection(this); - } - return _attributes; - } - } - - /// <summary> - /// Gets the collection of HTML attributes for the closing tag. May not be null. - /// </summary> - public HtmlAttributeCollection ClosingAttributes - { - get - { - if (!HasClosingAttributes) - { - return new HtmlAttributeCollection(this); - } - return _endnode.Attributes; - } - } - - internal void WriteAttribute(TextWriter outText, HtmlAttribute att) - { - string name; - - if (_ownerdocument.OptionOutputAsXml) - { - if (_ownerdocument.OptionOutputUpperCase) - { - name = att.XmlName.ToUpper(); - } - else - { - name = att.XmlName; - } - - outText.Write(" " + name + "=\"" + HtmlDocument.HtmlEncode(att.XmlValue) + "\""); - } - else - { - if (_ownerdocument.OptionOutputUpperCase) - { - name = att.Name.ToUpper(); - } - else - { - name = att.Name; - } - - if (att.Name.Length >= 4) - { - if ((att.Name[0] == '<') && (att.Name[1] == '%') && - (att.Name[att.Name.Length-1] == '>') && (att.Name[att.Name.Length-2] == '%')) - { - outText.Write(" " + name); - return; - } - } - if (_ownerdocument.OptionOutputOptimizeAttributeValues) - { - if (att.Value.IndexOfAny(new Char[]{(char)10, (char)13, (char)9, ' '}) < 0) - { - outText.Write(" " + name + "=" + att.Value); - } - else - { - outText.Write(" " + name + "=\"" + att.Value + "\""); - } - } - else - { - outText.Write(" " + name + "=\"" + att.Value + "\""); - } - } - } - - internal static void WriteAttributes(XmlWriter writer, HtmlNode node) - { - if (!node.HasAttributes) - { - return; - } - // we use _hashitems to make sure attributes are written only once - foreach(HtmlAttribute att in node.Attributes._hashitems.Values) - { - writer.WriteAttributeString(att.XmlName, att.Value); - } - } - - internal void WriteAttributes(TextWriter outText, bool closing) - { - if (_ownerdocument.OptionOutputAsXml) - { - if (_attributes == null) - { - return; - } - // we use _hashitems to make sure attributes are written only once - foreach(HtmlAttribute att in _attributes._hashitems.Values) - { - WriteAttribute(outText, att); - } - return; - } - - if (!closing) - { - if (_attributes != null) - { - - foreach(HtmlAttribute att in _attributes) - { - WriteAttribute(outText, att); - } - } - if (_ownerdocument.OptionAddDebuggingAttributes) - { - WriteAttribute(outText, _ownerdocument.CreateAttribute("_closed", Closed.ToString())); - WriteAttribute(outText, _ownerdocument.CreateAttribute("_children", ChildNodes.Count.ToString())); - - int i = 0; - foreach(HtmlNode n in ChildNodes) - { - WriteAttribute(outText, _ownerdocument.CreateAttribute("_child_" + i, - n.Name)); - i++; - } - } - } - else - { - if (_endnode == null) - { - return; - } - - if (_endnode._attributes == null) - { - return; - } - - if (_endnode == this) - { - return; - } - - foreach(HtmlAttribute att in _endnode._attributes) - { - WriteAttribute(outText, att); - } - if (_ownerdocument.OptionAddDebuggingAttributes) - { - WriteAttribute(outText, _ownerdocument.CreateAttribute("_closed", Closed.ToString())); - WriteAttribute(outText, _ownerdocument.CreateAttribute("_children", ChildNodes.Count.ToString())); - } - } - } - - internal static string GetXmlComment(HtmlCommentNode comment) - { - string s = comment.Comment; - return s.Substring(4, s.Length-7).Replace("--", " - -"); - } - - /// <summary> - /// Saves the current node to the specified TextWriter. - /// </summary> - /// <param name="outText">The TextWriter to which you want to save.</param> - public void WriteTo(TextWriter outText) - { - string html; - switch(_nodetype) - { - case HtmlNodeType.Comment: - html = ((HtmlCommentNode)this).Comment; - if (_ownerdocument.OptionOutputAsXml) - { - outText.Write("<!--" + GetXmlComment((HtmlCommentNode)this) + " -->"); - } - else - { - outText.Write(html); - } - break; - - case HtmlNodeType.Document: - if (_ownerdocument.OptionOutputAsXml) - { - outText.Write("<?xml version=\"1.0\" encoding=\"" + _ownerdocument.GetOutEncoding().BodyName + "\"?>"); - - // check there is a root element - if (_ownerdocument.DocumentNode.HasChildNodes) - { - int rootnodes = _ownerdocument.DocumentNode._childnodes.Count; - if (rootnodes > 0) - { - HtmlNode xml = _ownerdocument.GetXmlDeclaration(); - if (xml != null) - { - rootnodes --; - } - - if (rootnodes > 1) - { - if (_ownerdocument.OptionOutputUpperCase) - { - outText.Write("<SPAN>"); - WriteContentTo(outText); - outText.Write("</SPAN>"); - } - else - { - outText.Write("<span>"); - WriteContentTo(outText); - outText.Write("</span>"); - } - break; - } - } - } - } - WriteContentTo(outText); - break; - - case HtmlNodeType.Text: - html = ((HtmlTextNode)this).Text; - if (_ownerdocument.OptionOutputAsXml) - { - outText.Write(HtmlDocument.HtmlEncode(html)); - } - else - { - outText.Write(html); - } - break; - - case HtmlNodeType.Element: - string name; - if (_ownerdocument.OptionOutputUpperCase) - { - name = Name.ToUpper(); - } - else - { - name = Name; - } - - if (_ownerdocument.OptionOutputAsXml) - { - if (name.Length > 0) - { - if (name[0] == '?') - { - // forget this one, it's been done at the document level - break; - } - - if (name.Trim().Length == 0) - { - break; - } - name = HtmlDocument.GetXmlName(name); - } - else - { - break; - } - } - - outText.Write("<" + name); - WriteAttributes(outText, false); - - if (!HasChildNodes) - { - if (HtmlNode.IsEmptyElement(Name)) - { - if ((_ownerdocument.OptionWriteEmptyNodes) || (_ownerdocument.OptionOutputAsXml)) - { - outText.Write(" />"); - } - else - { - if (Name.Length > 0) - { - if (Name[0] == '?') - { - outText.Write("?"); - } - } - - outText.Write(">"); - } - } - else - { - outText.Write("></" + name + ">"); - } - } - else - { - outText.Write(">"); - bool cdata = false; - if (_ownerdocument.OptionOutputAsXml) - { - if (HtmlNode.IsCDataElement(Name)) - { - // this code and the following tries to output things as nicely as possible for old browsers. - cdata = true; - outText.Write("\r\n//<![CDATA[\r\n"); - } - } - - if (cdata) - { - if (HasChildNodes) - { - // child must be a text - ChildNodes[0].WriteTo(outText); - } - outText.Write("\r\n//]]>//\r\n"); - } - else - { - WriteContentTo(outText); - } - - outText.Write("</" + name); - if (!_ownerdocument.OptionOutputAsXml) - { - WriteAttributes(outText, true); - } - outText.Write(">"); - } - break; - } - } - - /// <summary> - /// Saves the current node to the specified XmlWriter. - /// </summary> - /// <param name="writer">The XmlWriter to which you want to save.</param> - public void WriteTo(XmlWriter writer) - { - string html; - switch(_nodetype) - { - case HtmlNodeType.Comment: - writer.WriteComment(GetXmlComment((HtmlCommentNode)this)); - break; - - case HtmlNodeType.Document: - writer.WriteProcessingInstruction("xml", "version=\"1.0\" encoding=\"" + _ownerdocument.GetOutEncoding().BodyName + "\""); - if (HasChildNodes) - { - foreach(HtmlNode subnode in ChildNodes) - { - subnode.WriteTo(writer); - } - } - break; - - case HtmlNodeType.Text: - html = ((HtmlTextNode)this).Text; - writer.WriteString(html); - break; - - case HtmlNodeType.Element: - string name; - if (_ownerdocument.OptionOutputUpperCase) - { - name = Name.ToUpper(); - } - else - { - name = Name; - } - writer.WriteStartElement(name); - WriteAttributes(writer, this); - - if (HasChildNodes) - { - foreach(HtmlNode subnode in ChildNodes) - { - subnode.WriteTo(writer); - } - } - writer.WriteEndElement(); - break; - } - } - - /// <summary> - /// Saves all the children of the node to the specified TextWriter. - /// </summary> - /// <param name="outText">The TextWriter to which you want to save.</param> - public void WriteContentTo(TextWriter outText) - { - if (_childnodes == null) - { - return; - } - - foreach(HtmlNode node in _childnodes) - { - node.WriteTo(outText); - } - } - - /// <summary> - /// Saves the current node to a string. - /// </summary> - /// <returns>The saved string.</returns> - public string WriteTo() - { - StringWriter sw = new StringWriter(); - WriteTo(sw); - sw.Flush(); - return sw.ToString(); - } - - /// <summary> - /// Saves all the children of the node to a string. - /// </summary> - /// <returns>The saved string.</returns> - public string WriteContentTo() - { - StringWriter sw = new StringWriter(); - WriteContentTo(sw); - sw.Flush(); - return sw.ToString(); - } - } - - /// <summary> - /// Represents a combined list and collection of HTML nodes. - /// </summary> - public class HtmlNodeCollection: IEnumerable - { - private ArrayList _items = new ArrayList(); - private HtmlNode _parentnode; - - internal HtmlNodeCollection(HtmlNode parentnode) - { - _parentnode = parentnode; // may be null - } - - /// <summary> - /// Gets the number of elements actually contained in the list. - /// </summary> - public int Count - { - get - { - return _items.Count; - } - } - - internal void Clear() - { - foreach(HtmlNode node in _items) - { - node._parentnode = null; - node._nextnode = null; - node._prevnode = null; - } - _items.Clear(); - } - - internal void Remove(int index) - { - HtmlNode next = null; - HtmlNode prev = null; - HtmlNode oldnode = (HtmlNode)_items[index]; - - if (index > 0) - { - prev = (HtmlNode)_items[index-1]; - } - - if (index < (_items.Count-1)) - { - next = (HtmlNode)_items[index+1]; - } - - _items.RemoveAt(index); - - if (prev != null) - { - if (next == prev) - { - throw new InvalidProgramException("Unexpected error."); - } - prev._nextnode = next; - } - - if (next != null) - { - next._prevnode = prev; - } - - oldnode._prevnode = null; - oldnode._nextnode = null; - oldnode._parentnode = null; - } - - internal void Replace(int index, HtmlNode node) - { - HtmlNode next = null; - HtmlNode prev = null; - HtmlNode oldnode = (HtmlNode)_items[index]; - - if (index>0) - { - prev = (HtmlNode)_items[index-1]; - } - - if (index<(_items.Count-1)) - { - next = (HtmlNode)_items[index+1]; - } - - _items[index] = node; - - if (prev != null) - { - if (node == prev) - { - throw new InvalidProgramException("Unexpected error."); - } - prev._nextnode = node; - } - - if (next!=null) - { - next._prevnode = node; - } - - node._prevnode = prev; - if (next == node) - { - throw new InvalidProgramException("Unexpected error."); - } - node._nextnode = next; - node._parentnode = _parentnode; - - oldnode._prevnode = null; - oldnode._nextnode = null; - oldnode._parentnode = null; - } - - internal void Insert(int index, HtmlNode node) - { - HtmlNode next = null; - HtmlNode prev = null; - - if (index>0) - { - prev = (HtmlNode)_items[index-1]; - } - - if (index<_items.Count) - { - next = (HtmlNode)_items[index]; - } - - _items.Insert(index, node); - - if (prev != null) - { - if (node == prev) - { - throw new InvalidProgramException("Unexpected error."); - } - prev._nextnode = node; - } - - if (next != null) - { - next._prevnode = node; - } - - node._prevnode = prev; - - if (next == node) - { - throw new InvalidProgramException("Unexpected error."); - } - - node._nextnode = next; - node._parentnode = _parentnode; - } - - internal void Append(HtmlNode node) - { - HtmlNode last = null; - if (_items.Count > 0) - { - last = (HtmlNode)_items[_items.Count-1]; - } - - _items.Add(node); - node._prevnode = last; - node._nextnode = null; - node._parentnode = _parentnode; - if (last != null) - { - if (last == node) - { - throw new InvalidProgramException("Unexpected error."); - } - last._nextnode = node; - } - } - - internal void Prepend(HtmlNode node) - { - HtmlNode first = null; - if (_items.Count > 0) - { - first = (HtmlNode)_items[0]; - } - - _items.Insert(0, node); - - if (node == first) - { - throw new InvalidProgramException("Unexpected error."); - } - node._nextnode = first; - node._prevnode = null; - node._parentnode = _parentnode; - if (first != null) - { - first._prevnode = node; - } - } - - internal void Add(HtmlNode node) - { - _items.Add(node); - } - - /// <summary> - /// Gets the node at the specified index. - /// </summary> - public HtmlNode this[int index] - { - get - { - return _items[index] as HtmlNode; - } - } - - internal int GetNodeIndex(HtmlNode node) - { - // TODO: should we rewrite this? what would be the key of a node? - for(int i=0;i<_items.Count;i++) - { - if (node == ((HtmlNode)_items[i])) - { - return i; - } - } - return -1; - } - - /// <summary> - /// Gets a given node from the list. - /// </summary> - public int this[HtmlNode node] - { - get - { - int index = GetNodeIndex(node); - if (index == -1) - { - throw new ArgumentOutOfRangeException("node", "Node \"" + node.CloneNode(false).OuterHtml + "\" was not found in the collection"); - } - return index; - } - } - - /// <summary> - /// Returns an enumerator that can iterate through the list. - /// </summary> - /// <returns>An IEnumerator for the entire list.</returns> - public HtmlNodeEnumerator GetEnumerator() - { - return new HtmlNodeEnumerator(_items); - } - - IEnumerator IEnumerable.GetEnumerator() - { - return GetEnumerator(); - } - - /// <summary> - /// Represents an enumerator that can iterate through the list. - /// </summary> - public class HtmlNodeEnumerator: IEnumerator - { - int _index; - ArrayList _items; - - internal HtmlNodeEnumerator(ArrayList items) - { - _items = items; - _index = -1; - } - - /// <summary> - /// Sets the enumerator to its initial position, which is before the first element in the collection. - /// </summary> - public void Reset() - { - _index = -1; - } - - /// <summary> - /// Advances the enumerator to the next element of the collection. - /// </summary> - /// <returns>true if the enumerator was successfully advanced to the next element, false if the enumerator has passed the end of the collection.</returns> - public bool MoveNext() - { - _index++; - return (_index<_items.Count); - } - - /// <summary> - /// Gets the current element in the collection. - /// </summary> - public HtmlNode Current - { - get - { - return (HtmlNode)(_items[_index]); - } - } - - /// <summary> - /// Gets the current element in the collection. - /// </summary> - object IEnumerator.Current - { - get - { - return (Current); - } - } - } - } - - /// <summary> - /// Represents an HTML text node. - /// </summary> - public class HtmlTextNode: HtmlNode - { - private string _text; - - internal HtmlTextNode(HtmlDocument ownerdocument, int index): - base(HtmlNodeType.Text, ownerdocument, index) - { - } - - /// <summary> - /// Gets or Sets the HTML between the start and end tags of the object. In the case of a text node, it is equals to OuterHtml. - /// </summary> - public override string InnerHtml - { - get - { - return OuterHtml; - } - set - { - _text = value; - } - } - - /// <summary> - /// Gets or Sets the object and its content in HTML. - /// </summary> - public override string OuterHtml - { - get - { - if (_text == null) - { - return base.OuterHtml; - } - return _text; - } - } - - /// <summary> - /// Gets or Sets the text of the node. - /// </summary> - public string Text - { - get - { - if (_text == null) - { - return base.OuterHtml; - } - return _text; - } - set - { - _text = value; - } - } - } - - /// <summary> - /// Represents an HTML comment. - /// </summary> - public class HtmlCommentNode: HtmlNode - { - private string _comment; - - internal HtmlCommentNode(HtmlDocument ownerdocument, int index): - base(HtmlNodeType.Comment, ownerdocument, index) - { - } - - /// <summary> - /// Gets or Sets the HTML between the start and end tags of the object. In the case of a text node, it is equals to OuterHtml. - /// </summary> - public override string InnerHtml - { - get - { - if (_comment == null) - { - return base.InnerHtml; - } - return _comment; - } - set - { - _comment = value; - } - } - - /// <summary> - /// Gets or Sets the object and its content in HTML. - /// </summary> - public override string OuterHtml - { - get - { - if (_comment == null) - { - return base.OuterHtml; - } - return "<!--" + _comment + "-->"; - } - } - - /// <summary> - /// Gets or Sets the comment text of the node. - /// </summary> - public string Comment - { - get - { - if (_comment == null) - { - return base.InnerHtml; - } - return _comment; - } - set - { - _comment = value; - } - } - } - -} |