103 lines
3.8 KiB
C#
103 lines
3.8 KiB
C#
using System.Web;
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using System.Web.Mvc;
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using MarkdownDeep;
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namespace Yavsc.Model.Blogs
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{
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/// <summary>
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/// Helper class for transforming Markdown.
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/// </summary>
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public static partial class MarkdownHelper
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{
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/// <summary>
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/// Transforms a string of Markdown into HTML.
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/// </summary>
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/// <param name="text">The Markdown that should be transformed.</param>
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/// <returns>The HTML representation of the supplied Markdown.</returns>
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public static IHtmlString Markdown(string text)
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{
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// Transform the supplied text (Markdown) into HTML.
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var markdownTransformer = new Markdown();
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markdownTransformer.ExtraMode = true;
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string html = markdownTransformer.Transform(text);
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// Wrap the html in an MvcHtmlString otherwise it'll be HtmlEncoded and displayed to the user as HTML :(
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return new MvcHtmlString(html);
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}
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/// <summary>
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/// Transforms a string of Markdown into HTML.
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/// </summary>
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/// <param name="helper">HtmlHelper - Not used, but required to make this an extension method.</param>
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/// <param name="text">The Markdown that should be transformed.</param>
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/// <param name="urlBaseLocation">The url Base Location.</param>
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/// <returns>The HTML representation of the supplied Markdown.</returns>
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public static IHtmlString Markdown(this HtmlHelper helper, string text, string urlBaseLocation="")
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{
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// Transform the supplied text (Markdown) into HTML.
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var markdownTransformer = new Markdown();
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markdownTransformer.ExtraMode = true;
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markdownTransformer.UrlBaseLocation = urlBaseLocation;
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string html = markdownTransformer.Transform(text);
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// Wrap the html in an MvcHtmlString otherwise it'll be HtmlEncoded and displayed to the user as HTML :(
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return new MvcHtmlString(html);
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}
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public static string MarkdownIntro(string markdown, out bool truncated) {
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int maxLen = 250;
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if (markdown.Length < maxLen) {
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truncated = false;
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return markdown;
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}
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string intro = markdown.Remove (maxLen);
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truncated = true;
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int inl = intro.LastIndexOf ("\n");
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if (inl > 20)
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intro = intro.Remove (inl);
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intro += " ...";
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return intro;
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}
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/// <summary>
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/// Markdowns to html intro.
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/// </summary>
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/// <returns>The to html intro.</returns>
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/// <param name="truncated">Truncated.</param>
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/// <param name="text">Text.</param>
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/// <param name="urlBaseLocation">URL base location.</param>
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public static string MarkdownToHtmlIntro(out bool truncated, string text, string urlBaseLocation="") {
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var md = MarkdownIntro(text, out truncated);
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var markdownTransformer = new Markdown();
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markdownTransformer.ExtraMode = true;
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markdownTransformer.UrlBaseLocation = urlBaseLocation;
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string html = markdownTransformer.Transform(md);
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return html;
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}
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/// <summary>
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/// Markdowns to html intro.
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/// </summary>
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/// <returns>The to html intro.</returns>
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/// <param name="helper">Helper.</param>
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/// <param name="truncated">Truncated.</param>
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/// <param name="text">Text.</param>
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/// <param name="urlBaseLocation">URL base location.</param>
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public static IHtmlString MarkdownToHtmlIntro(this HtmlHelper helper, out bool truncated, string text, string urlBaseLocation="")
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{
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// Wrap the html in an MvcHtmlString otherwise it'll be HtmlEncoded and displayed to the user as HTML :(
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return new MvcHtmlString(MarkdownToHtmlIntro (out truncated, text, urlBaseLocation));
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}
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/// <summary>
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/// Transforms a string of Markdown into HTML.
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/// </summary>
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/// <param name="helper">HtmlHelper - Not used, but required to make this an extension method.</param>
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/// <param name="text">The Markdown that should be transformed.</param>
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/// <returns>The HTML representation of the supplied Markdown.</returns>
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public static IHtmlString Markdown(this HtmlHelper helper, string text)
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{
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// Just call the other one, to avoid having two copies (we don't use the HtmlHelper).
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return Markdown(text);
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}
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}
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}
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