public string Generate(SummarizeContext context)
{
var document = new HtmlDocument();
var html = context.Html.SanitizeHtml(context.HtmlWhiteList);
document.LoadHtml(html);
var paragraphs = document.DocumentNode.Elements("p").Take(context.BoundaryCount);
var htmlExcerpt = string.Join("\r\n", paragraphs.Select(p => p.OuterHtml));
return(htmlExcerpt);
}
public string Generate(SummarizeContext context)
{
var ingress = Regex.Replace(context.Html, "<(.|\n)+?>", String.Empty, RegexOptions.IgnoreCase);
if (!String.IsNullOrEmpty(ingress))
{
var original = ingress;
var wordColl = Regex.Matches(original, @"(\S+\s+)");
if (wordColl.Count > context.BoundaryCount)
{
var word = new StringBuilder();
foreach (var subWord in wordColl.Cast <Match>().Select(r => r.Value).Take(context.BoundaryCount))
{
word.Append(subWord);
}
ingress = word.ToString().Trim() + context.Ellipses;
}
}
return(ingress);
}
public string Generate(SummarizeContext context)
{
var html = context.Html.SanitizeHtml(context.HtmlWhiteList);
var max = context.BoundaryCount;
var index = 0;
var count = 0;
var isTag = false;
var isEndTag = false;
var isEntity = false;
var lastTagName = "";
var tagName = "";
var isWord = false;
var lastWordIndex = 0;
var isAttribute = false;
while (index < html.Length && count < max)
{
var character = html[index];
if (!isTag && !isEntity)
{
switch (character)
{
case '<':
isTag = true;
isEndTag = false;
isWord = false;
isAttribute = false;
break;
case '&':
isEntity = true;
isWord = false;
break;
default:
count++;
if ((character >= 'a' && character <= 'z') || (character >= 'A' && character <= 'Z'))
{
if (!isWord)
{
isWord = true;
lastWordIndex = index;
}
}
else if (isWord)
{
isWord = false;
}
break;
}
}
else if (isEntity)
{
switch (character)
{
case ';':
isEntity = false;
break;
}
}
else
{
switch (character)
{
case '/':
if (!isAttribute)
{
isEndTag = true;
lastTagName = tagName;
tagName = "";
}
break;
case '>':
isTag = false;
isAttribute = false;
lastTagName = tagName;
tagName = "";
break;
case ' ':
isAttribute = true;
break;
default:
if (!isAttribute)
{
tagName += character;
}
break;
}
}
index++;
}
string htmlExcerpt;
if (isWord && lastWordIndex > 0 && index < html.Length && ((html[index] >= 'a' && html[index] <= 'z') || (html[index] >= 'A' && html[index] <= 'Z')))
{
htmlExcerpt = html.Substring(0, lastWordIndex);
}
else
{
htmlExcerpt = html.Substring(0, index);
}
if (index < html.Length)
{
htmlExcerpt = Regex.Replace(htmlExcerpt, @"( |\s|\t)( |\s|\t)*$", string.Empty);
}
if (!isEndTag)
{
var endTag = "</" + lastTagName + ">";
htmlExcerpt += endTag;
}
return(htmlExcerpt);
}
public static string Summarize(this HtmlHelper htmlHelper, SummarizeContext context)
{
var summarizer = htmlHelper.GetWorkContext().Resolve <ISummarizer>();
return(summarizer.Summarize(context));
}
public string Generate(SummarizeContext context)
{
var html = context.Html.SanitizeHtml(context.HtmlWhiteList);
var max = context.BoundaryCount;
var index = 0;
var count = 0;
var isTag = false;
var isEndTag = false;
var isEntity = false;
var lastTagName = "";
var tagName = "";
var isWord = false;
var isAttribute = false;
while (index < html.Length && (count < max || isWord))
{
var character = html[index];
if (!isTag && !isEntity)
{
if (character == '<')
{
isTag = true;
isEndTag = false;
isWord = false;
isAttribute = false;
}
else if (character == '&')
{
isEntity = true;
isWord = false;
}
else if ((character >= 'a' && character <= 'z') || (character >= 'A' && character <= 'Z') || (character >= '0' && character <= '9'))
{
if (!isWord)
{
isWord = true;
count++;
}
}
else
{
isWord = false;
}
}
else if (isEntity)
{
switch (character)
{
case ';':
isEntity = false;
break;
default:
tagName += character;
break;
}
}
else
{
switch (character)
{
case '/':
if (!isAttribute)
{
isEndTag = true;
lastTagName = tagName;
tagName = "";
}
break;
case '>':
isTag = false;
isAttribute = false;
lastTagName = tagName;
tagName = "";
break;
case ' ':
isAttribute = true;
break;
default:
if (!isAttribute)
{
tagName += character;
}
break;
}
}
index++;
}
var htmlExcerpt = html.Substring(0, index);
if (!isEndTag && !String.IsNullOrWhiteSpace(lastTagName))
{
var endTag = "</" + lastTagName + ">";
htmlExcerpt += endTag;
}
return(htmlExcerpt);
}
