/// <summary>
/// Ctor.
/// </summary>
/// <param name="name"></param>
public HtmlTag(string name, IHtmlFilter filter)
{
this.filter = filter;
if (name == null)
{
name = String.Empty;
}
this.rawName = name.Trim();
if (this.rawName.StartsWith("!") ||
this.rawName.StartsWith("?") ||
this.rawName.StartsWith("%"))
{
this.tagType = HtmlTagType.Unparsed;
}
else if (this.rawName.StartsWith("/"))
{
this.tagType = HtmlTagType.EndTag;
this.rawName = this.rawName.Substring(1);
}
else if (HtmlTag.FullTagRequired(this.TagName)) // this.TagName is lowercase
{
this.tagType = HtmlTagType.FullTag;
}
else
{
this.tagType = HtmlTagType.BeginTag;
}
}
/// <summary>
/// 实例化一个富文本对象
/// </summary>
/// <param name="source">未被过滤的源文本</param>
/// <param name="htmlFilter">html过滤器</param>
public RichText(string source, IHtmlFilter htmlFilter)
{
this.source = source;
this.htmlFilter = htmlFilter ?? throw new ArgumentNullException(nameof(htmlFilter));
}
/// <summary>
/// Ctor.
/// </summary>
/// <param name="name"></param>
public HtmlTag(string name, IHtmlFilter filter)
{
this.filter = filter;
if (name == null)
{
name = String.Empty;
}
this.rawName = name.Trim();
if (this.rawName.StartsWith("!") ||
this.rawName.StartsWith("?") ||
this.rawName.StartsWith("%"))
{
this.tagType = HtmlTagType.Unparsed;
}
else if (this.rawName.StartsWith("/"))
{
this.tagType = HtmlTagType.EndTag;
this.rawName = this.rawName.Substring(1);
}
else if (HtmlTag.FullTagRequired(this.TagName)) // this.TagName is lowercase
{
this.tagType = HtmlTagType.FullTag;
}
else
{
this.tagType = HtmlTagType.BeginTag;
}
}
/// <summary>
/// Quick parsing utility for common usage.
/// </summary>
/// <param name="html">the source text</param>
/// <param name="filter">a custom HtmlFilter</param>
/// <param name="maxLength">the maximum text length</param>
/// <returns>the filtered markup</returns>
public static string Parse(string html, IHtmlFilter filter, int maxLength)
{
StringWriter writer = new StringWriter();
HtmlDistiller parser = new HtmlDistiller(maxLength, filter);
parser.HtmlWriter = new HtmlWriter(writer);
parser.Parse(html);
return writer.ToString();
}
/// <summary>
/// Quick parsing utility for common usage.
/// </summary>
/// <param name="html">the source text</param>
/// <param name="filter">a custom HtmlFilter</param>
/// <returns>the filtered markup</returns>
public static string Parse(string html, IHtmlFilter filter)
{
return HtmlDistiller.Parse(html, filter, 0);
}
/// <summary>
/// Ctor
/// </summary>
/// <param name="text">the text to parse</param>
/// <param name="filter"></param>
public HtmlDistiller(int maxLength, IHtmlFilter filter)
{
this.maxLength = maxLength;
this.htmlFilter = filter;
}
/// <summary>引发 Rendered 事件</summary>
protected virtual void OnRendered( HtmlRequestContext context, IHtmlFilter[] filters )
{
foreach ( var filter in filters.Reverse() )
{
try
{
filter.OnRendered( context );
}
catch { }
}
}
/// <summary>引发 Processing 事件</summary>
protected virtual void OnProcessing( HtmlRequestContext context, IHtmlFilter[] filters )
{
foreach ( var filter in filters )
{
try
{
filter.OnProcessing( context );
}
catch { }
}
}