private void CheckImageAlt(CHtmlDocument doc, CHtmlNodeCollection nodes)
{
foreach (CHtmlNode node in nodes)
{
if (node is CHtmlElement)
{
CHtmlElement element = node as CHtmlElement;
if ("img".Equals(element.Name.ToLower(), StringComparison.OrdinalIgnoreCase))
{
if (element.Attributes.HasAttribute("alt") == false)
{
// 리포터 모듈 작성 할것
AddReportItem(doc.HRef, element.HTML, "["+1001+"] img태그에 Alt가 없습니다.");
}
if(element.Attributes.HasAttribute("height") == false)
{
AddReportItem(doc.HRef, element.HTML, "["+1002+"] img태그에 Height속성이 없습니다.");
}
if(element.Attributes.HasAttribute("width") == false)
{
AddReportItem(doc.HRef, element.HTML, "[" + 1003 + "] img태그에 Width속성이 없습니다.");
}
}
if (element.Nodes.Count > 0)
CheckImageAlt(doc, element.Nodes);
}
}
}
/////////////////////////////////////////////////////////////////////////////////
/// <summary>
/// This constructs a new HTML element with the specified tag name.
/// </summary>
public CHtmlElement(string name)
{
System.Diagnostics.Debug.Assert(name != null && CHtmlUtil.ExistWhiteSpaceChar(name) == false);
m_nodes = new CHtmlNodeCollection(this);
m_name = name.Trim().ToLower();
}
/////////////////////////////////////////////////////////////////////////////////
/// <summary>
///
/// </summary>
/// <param name="result"></param>
/// <param name="name"></param>
/// <param name="searchChildren"></param>
public void FindByName(CHtmlNodeCollection result, string name, bool searchChildren)
{
System.Diagnostics.Debug.Assert(result != null);
System.Diagnostics.Debug.Assert(name != null);
name = name.Trim().ToLower();
for (int index = 0, count = m_nodeList.Count; index < count; ++index)
{
CHtmlNode node = m_nodeList[index];
if (node.NodeName.Equals(name))
{
result.Add(node);
}
if (searchChildren == true && node is CHtmlElement)
{
((CHtmlElement)node).Nodes.FindByName(result, name, searchChildren);
}
}
}
/////////////////////////////////////////////////////////////////////////////////
/// <summary>
///
/// </summary>
/// <param name="html"></param>
public virtual void LoadHtml(string html)
{
System.Diagnostics.Debug.Assert(html != null);
m_nodeList.Clear();
m_parser.Parse(html, m_nodeList);
if (m_charset == null)
{
m_charset = DetectCharset(m_nodeList);
if (m_charset == null)
{
m_charset = Encoding.Unicode;
}
}
CHtmlNodeCollection bases = m_nodeList.FindByName("base", true);
if (bases != null && bases.Count > 0 && ((CHtmlElement)bases[bases.Count - 1]).Attributes["href"] != null)
{
this.docBase = ((CHtmlElement)bases[bases.Count - 1]).Attributes["href"].Value;
}
}
///////////////////////////////////////////////////////////////////////////////
/// <summary>
/// »ý¼ºÀÚ
/// </summary>
public CHtmlElement(CHtmlElement obj) : base(obj)
{
System.Diagnostics.Debug.Assert(obj != null);
obj.AssertValid();
m_name = obj.m_name;
m_nodes = new CHtmlNodeCollection(this);
int count = obj.m_nodes.Count;
m_nodes.Capacity = count;
for (int index = 0; index < count; ++index)
{
m_nodes.Add((CHtmlNode)obj.m_nodes[index].Clone());
}
count = obj.m_attributes.Count;
m_attributes.Capacity = count;
for (int index = 0; index < count; ++index)
{
m_attributes.Add((CHtmlAttribute)obj.m_attributes[index].Clone());
}
}
private void FindLink(CHtmlNodeCollection parentNodes, ref CHtmlNodeCollection links)
{
if (parentNodes == null || parentNodes.Count == 0) return;
CHtmlAttribute attr;
foreach(CHtmlNode node in parentNodes)
{
if(node is CHtmlElement)
{
if(node == null) continue;
attr = null;
CHtmlElement element = node as CHtmlElement;
switch(element.Name.Trim().ToLower())
{
case "a":
case "link":
case "frame":
attr = element.Attributes["href"];
break;
case "script":
attr = element.Attributes["src"];
break;
}
if(attr != null)
{
links.Add(node);
}
if(element.Nodes.Count > 0)
{
FindLink(element.Nodes, ref links);
}
}
}
}
/////////////////////////////////////////////////////////////////////////////////
/// <summary>
///
/// </summary>
/// <param name="htmlStream"></param>
/// <returns></returns>
private Encoding DetectCharset(CHtmlNodeCollection nodes)
{
Encoding result = null;
string charset = "";
CHtmlNodeCollection metaNodes = new CHtmlNodeCollection();
CHtmlElement node = nodes["html"] as CHtmlElement;
if(node != null) node = node.Nodes["head"] as CHtmlElement;
if(node != null) node.Nodes.FindByNameAttribute(metaNodes, "meta", "content", false);
for(int nodeIndex = 0, count = metaNodes.Count; nodeIndex < count; ++nodeIndex)
{
CHtmlElement metaElement = metaNodes[nodeIndex] as CHtmlElement;
if(metaElement != null)
{
int index = -1;
CHtmlAttributeCollection attributes = metaElement.Attributes.FindByName("content");
for(int attributeIndex = 0, attributeCount = attributes.Count; attributeIndex < attributeCount; ++attributeIndex)
{
CHtmlAttribute attribute = attributes[attributeIndex];
if((index = attribute.Value.IndexOf("charset")) != -1)
{
string value = attribute.Value;
int startIndex = index + 7;
while(startIndex < value.Length && CHtmlUtil.EqualesOfAnyChar(value[startIndex], " =")) ++startIndex;
int endIndex = startIndex + 1;
while(endIndex < value.Length && !CHtmlUtil.EqualesOfAnyChar(value[endIndex], " ")) ++endIndex;
if(startIndex < value.Length && endIndex - startIndex > 0)
{
charset = value.Substring(startIndex, endIndex - startIndex);
try
{
result = Encoding.GetEncoding(charset);
break;
}
catch(Exception)
{
}
}
}
}
}
}
return result;
}
/////////////////////////////////////////////////////////////////////////////////
/// <summary>
///
/// </summary>
/// <param name="result"></param>
/// <param name="name"></param>
/// <param name="searchChildren"></param>
public void FindByName(CHtmlNodeCollection result, string name, bool searchChildren)
{
System.Diagnostics.Debug.Assert(result != null);
System.Diagnostics.Debug.Assert(name != null);
name = name.Trim().ToLower();
for(int index = 0, count = m_nodeList.Count; index < count; ++index)
{
CHtmlNode node = m_nodeList[index];
if(node.NodeName.Equals(name))
result.Add(node);
if(searchChildren == true && node is CHtmlElement)
((CHtmlElement)node).Nodes.FindByName(result, name, searchChildren);
}
}
/////////////////////////////////////////////////////////////////////////////////
/// <summary>
///
/// </summary>
/// <param name="visitor"></param>
/// <param name="nodeIDCount"></param>
/// <returns></returns>
private void ResolveElement(ref int visitor, ref int nodeIDCount)
{
System.Diagnostics.Debug.Assert(m_tokens[visitor].Type == Token.TokenType.TagName);
CHtmlElement element = new CHtmlElement(m_tokens[visitor].Content);
element.m_close = false;
++nodeIDCount;
element.NodeID = nodeIDCount;
++visitor;
ResolveAttribute(ref visitor, element.Attributes);
System.Diagnostics.Debug.Assert(m_tokens[visitor].Type == Token.TokenType.TagEnd || m_tokens[visitor].Type == Token.TokenType.TagCloseEnd);
if(m_tokens[visitor].Type == Token.TokenType.TagEnd) // <tag>
{
switch(element.Name)
{
// Empty tag
case "area":
case "bgsound":
case "base":
case "br":
case "basefont":
case "col":
case "embed":
case "frame":
case "hr":
case "img":
case "isindex":
case "input":
case "keygen":
case "link":
case "meta":
case "nextid":
case "option":
case "param":
case "sound":
case "spacer":
case "wbr":
element.TerminatedType = CHtmlElement.EndTagType.NonTerminated;
CloseElement(element);
if(ElementCreatedEvent != null) ElementCreatedEvent(element);
m_currentLevel.Add(element);
break;
default:
{
element.m_previousWithSameNameNode = (CHtmlElement)m_lastOpenNodes[element.Name];
m_lastOpenNodes[element.Name] = element;
if(ElementCreatedEvent != null) ElementCreatedEvent(element);
m_currentLevel.Add(element);
m_currentLevel = element.Nodes;
}
break;
}
}
else // <tag/>
{
element.TerminatedType = CHtmlElement.EndTagType.Terminated;
CloseElement(element);
if(ElementCreatedEvent != null) ElementCreatedEvent(element);
m_currentLevel.Add(element);
}
++visitor;
}
/////////////////////////////////////////////////////////////////////////////////
/// <summary>
/// This will parse a string containing HTML and will produce a domain tree.
/// </summary>
/// <param name="html">The HTML to be parsed</param>
/// <returns></returns>
public CHtmlNodeCollection Parse(string html)
{
System.Diagnostics.Debug.Assert(html != null);
CHtmlNodeCollection result = new CHtmlNodeCollection();
Parse(html, result);
return result;
}
/////////////////////////////////////////////////////////////////////////////////
/// <summary>
/// This will parse a string containing HTML and will produce a domain tree.
/// </summary>
/// <param name="html">The HTML to be parsed</param>
/// <returns></returns>
public void Parse(string html, CHtmlNodeCollection result)
{
System.Diagnostics.Debug.Assert(html != null);
System.Diagnostics.Debug.Assert(result != null);
m_input = html;
m_result = result;
m_currentLevel = m_result;
ParseTokens();
ResolveTokens();
m_result = null;
m_input = null;
m_currentLevel = null;
m_lastOpenNodes.Clear();
}
/////////////////////////////////////////////////////////////////////////////////
/// <summary>
///
/// </summary>
/// <param name="result"></param>
public void GetDescendent(CHtmlNodeCollection result)
{
System.Diagnostics.Debug.Assert(result != null);
for(int index = 0, count = m_nodeList.Count; index < count; ++index)
{
CHtmlNode node = m_nodeList[index];
result.Add(node);
if(node is CHtmlElement)
((CHtmlElement)node).Nodes.GetDescendent(result);
}
}
/////////////////////////////////////////////////////////////////////////////////
/// <summary>
///
/// </summary>
/// <returns></returns>
public CHtmlNodeCollection GetDescendent()
{
CHtmlNodeCollection result = new CHtmlNodeCollection(64);
GetDescendent(result);
return result;
}
/////////////////////////////////////////////////////////////////////////////////
/// <summary>
///
/// </summary>
/// <param name="result"></param>
/// <param name="name"></param>
/// <param name="attributeName"></param>
/// <param name="attributeValue"></param>
/// <param name="searchChildren"></param>
public void FindByNameAttributeValue(CHtmlNodeCollection result, string name, string attributeName, string attributeValue, bool searchChildren)
{
System.Diagnostics.Debug.Assert(result != null);
System.Diagnostics.Debug.Assert(attributeName != null);
attributeName = attributeName.Trim().ToLower();
for(int index = 0, count = m_nodeList.Count; index < count; ++index)
{
CHtmlNode node = m_nodeList[index];
if(node.NodeName.Equals(name) && node is IHtmlNodeHasAttribute)
{
CHtmlAttribute attribute = ((IHtmlNodeHasAttribute)node).Attributes[attributeName];
if(attribute != null && attribute.Value == attributeValue)
result.Add(node);
}
if(searchChildren && node is CHtmlElement)
((CHtmlElement)node).Nodes.FindByNameAttributeValue(result, name, attributeName, attributeValue, searchChildren);
}
}
/////////////////////////////////////////////////////////////////////////////////
/// <summary>
///
/// </summary>
/// <param name="result"></param>
/// <param name="name"></param>
/// <param name="searchChildren"></param>
public void FindByName(CHtmlNodeCollection result, string name, int depth)
{
System.Diagnostics.Debug.Assert(result != null);
System.Diagnostics.Debug.Assert(name != null);
System.Diagnostics.Debug.Assert(depth >= 0);
if(depth > 0)
{
name = name.Trim().ToLower();
for(int index = 0, count = m_nodeList.Count; index < count; ++index)
{
CHtmlNode node = m_nodeList[index];
if(node.NodeName.Equals(name))
result.Add(node);
if(depth > 1 && node is CHtmlElement)
((CHtmlElement)node).Nodes.FindByName(result, name, depth - 1);
}
}
}
/////////////////////////////////////////////////////////////////////////////////
/// <summary>
///
/// </summary>
/// <param name="visitor"></param>
/// <param name="nodeIDCount"></param>
/// <returns></returns>
private void ResolveEndTag(ref int visitor)
{
System.Diagnostics.Debug.Assert(m_tokens[visitor].Type == Token.TokenType.TagCloseBegin);
++visitor;
System.Diagnostics.Debug.Assert(m_tokens[visitor].Type == Token.TokenType.TagName);
string tagName = m_tokens[visitor].Content;
CHtmlElement openElement = (CHtmlElement)m_lastOpenNodes[tagName];
// "000<b>111<a>222</b>333</a>444" will be transformed into "000<b>111<a>222</a></b>333444".
// The end tag "</a> will be ignored.
if(openElement != null) // If open tag is not found, we ignore the end tag
{
openElement.TerminatedType = CHtmlElement.EndTagType.ExplicitlyTerminated;
CloseElement(openElement);
if(openElement.Parent != null)
m_currentLevel = openElement.Parent.Nodes;
else m_currentLevel = m_result;
}
++visitor;
System.Diagnostics.Debug.Assert(m_tokens[visitor].Type == Token.TokenType.TagEnd);
++visitor;
}
/////////////////////////////////////////////////////////////////////////////////
#region
/////////////////////////////////////////////////////////////////////////////////
/// <summary>
///
/// </summary>
/// <param name="htmlStream"></param>
/// <returns></returns>
private Encoding DetectCharset(CHtmlNodeCollection nodes)
{
Encoding result = null;
string charset = "";
CHtmlNodeCollection metaNodes = new CHtmlNodeCollection();
CHtmlElement node = nodes["html"] as CHtmlElement;
if (node != null)
{
node = node.Nodes["head"] as CHtmlElement;
}
if (node != null)
{
node.Nodes.FindByNameAttribute(metaNodes, "meta", "content", false);
}
for (int nodeIndex = 0, count = metaNodes.Count; nodeIndex < count; ++nodeIndex)
{
CHtmlElement metaElement = metaNodes[nodeIndex] as CHtmlElement;
if (metaElement != null)
{
int index = -1;
CHtmlAttributeCollection attributes = metaElement.Attributes.FindByName("content");
for (int attributeIndex = 0, attributeCount = attributes.Count; attributeIndex < attributeCount; ++attributeIndex)
{
CHtmlAttribute attribute = attributes[attributeIndex];
if ((index = attribute.Value.IndexOf("charset")) != -1)
{
string value = attribute.Value;
int startIndex = index + 7;
while (startIndex < value.Length && CHtmlUtil.EqualesOfAnyChar(value[startIndex], " ="))
{
++startIndex;
}
int endIndex = startIndex + 1;
while (endIndex < value.Length && !CHtmlUtil.EqualesOfAnyChar(value[endIndex], " "))
{
++endIndex;
}
if (startIndex < value.Length && endIndex - startIndex > 0)
{
charset = value.Substring(startIndex, endIndex - startIndex);
try
{
result = Encoding.GetEncoding(charset);
break;
}
catch (Exception)
{
}
}
}
}
}
}
return(result);
}
/////////////////////////////////////////////////////////////////////////////////
/// <summary>
///
/// </summary>
/// <param name="tagName"></param>
/// <param name="boundElements"></param>
private void ResolveEndTagOptionalElement(string[] targetElements, string[] boundElements)
{
System.Diagnostics.Debug.Assert(targetElements != null);
System.Diagnostics.Debug.Assert(boundElements != null);
for(int targetIndex = 0, targetCount = targetElements.Length; targetIndex < targetCount; ++targetIndex)
{
// Find open element
CHtmlElement openElement = (CHtmlElement)m_lastOpenNodes[targetElements[targetIndex]];
if(openElement != null)
{
bool fixNestedElement = true;
CHtmlElement boundElement = null;
// Find bound element
for(int index = 0, count = boundElements.Length; index < count; ++index)
{
boundElement = (CHtmlElement)m_lastOpenNodes[boundElements[index]];
if(boundElement != null &&
boundElement.m_close == false && boundElement.NodeID > openElement.NodeID)
{
// The bound element is found, and the "tagName" can cross the bound element to
// match the open element
fixNestedElement = false;
break;
}
}
if(fixNestedElement == true)
{
CHtmlElement parent = openElement.Parent;
CloseElement(openElement);
if(openElement.Parent != null)
m_currentLevel = openElement.Parent.Nodes;
else m_currentLevel = m_result;
}
}
}
}
///////////////////////////////////////////////////////////////////////////////
/// <summary>
/// ������
/// </summary>
public CHtmlElement(CHtmlElement obj)
: base(obj)
{
System.Diagnostics.Debug.Assert(obj != null);
obj.AssertValid();
m_name = obj.m_name;
m_nodes = new CHtmlNodeCollection(this);
int count = obj.m_nodes.Count;
m_nodes.Capacity = count;
for(int index = 0; index < count; ++index)
m_nodes.Add((CHtmlNode)obj.m_nodes[index].Clone());
count = obj.m_attributes.Count;
m_attributes.Capacity = count;
for(int index = 0; index < count; ++index)
m_attributes.Add((CHtmlAttribute)obj.m_attributes[index].Clone());
}
/////////////////////////////////////////////////////////////////////////////////
/// <summary>
/// This will search though this collection of nodes for all elements with the
/// specified name. If you want to search the subnodes recursively, you should
/// pass True as the parameter in searchChildren. This search is guaranteed to
/// return nodes in the order in which they are found in the document.
/// </summary>
/// <param name="name">The name of the element to find</param>
/// <param name="searchChildren">True if you want to search sub-nodes, False to
/// only search this collection.</param>
/// <returns>A collection of all the nodes that macth.</returns>
public CHtmlNodeCollection FindByName(string name, bool searchChildren)
{
System.Diagnostics.Debug.Assert(name != null);
name = name.Trim().ToLower();
CHtmlNodeCollection result = new CHtmlNodeCollection(64);
FindByName(result, name, searchChildren);
return result;
}
