internal void Update(MarkdownObject objectToParse)
{
Object = objectToParse;
Source = Object is null
? StringSlice.Empty
: new StringSlice(ParsingResult.Source, Object.Span.Start, Object.Span.End);
}
public string RenderHtml(MarkdownObject obj)
{
(_htmlRenderer.Writer as StringWriter).GetStringBuilder().Clear();
_htmlRenderer.Render(obj);
_htmlRenderer.Writer.Flush();
return(_htmlRenderer.Writer.ToString());
}
public override object Render(MarkdownObject markdownObject)
{
Root = new FlowDocument();
Blocks = Root.Blocks;
Write(markdownObject);
return(null);
}
/// <summary>
/// Looks into the markdown element for a marker, and adds it as bookmark to the OpenXML document.
/// The presumtion here is that the topmost element on the <see cref="OpenXmlCompositeElement"/> stack is a <see cref="Paragraph"/>.
/// </summary>
/// <param name="obj">The object.</param>
public void AddBookmarkIfNeccessary(MarkdownObject obj)
{
if (Peek() is Paragraph paragraph)
{
AddBookmarkIfNeccessary(obj, paragraph);
}
}
public string ToHtml(string markdown)
{
if (string.IsNullOrEmpty(markdown))
{
return("");
}
var pipeline = new MarkdownPipelineBuilder();
MarkdownPipeline markdownPipeline = pipeline.UseAdvancedExtensions().Build();
MarkdownObject doc = Markdown.Parse(markdown, markdownPipeline);
var walker = new MarkdigImageAndLinkWalker(
(e) =>
{
ImageParsed?.Invoke(e);
},
(e) =>
{
LinkParsed?.Invoke(e);
});
walker.WalkAndBindParseEvents(doc);
var builder = new StringBuilder();
var textwriter = new StringWriter(builder);
var renderer = new HtmlRenderer(textwriter);
renderer.Render(doc);
return(builder.ToString());
}
private static void TransformUrl(MarkdownObject markdownObject, string currentDir)
{
foreach (MarkdownObject child in markdownObject.Descendants())
{
// LinkInline can be both an image or a <a href="...">
LinkInline link = child as LinkInline;
if (link != null)
{
string url = link.Url;
if (!urlRegex.IsMatch(url))
{
try
{
if (!Path.IsPathRooted(url) && currentDir != null)
{
url = Path.GetFullPath(Path.Combine(currentDir, url)).Replace('\\', '/');
}
url = "file:///" + url;
link.Url = url;
}
catch (Exception)
{
return;
}
}
}
TransformUrl(child, currentDir);
}
}
internal static string ToMarkdownString(this MarkdownObject md, NormalizeOptions?options = null)
{
var writer = new StringWriter();
WriteTo(md, writer, options);
return(writer.ToString());
}
private void RenderWithIndent(VT100Renderer renderer, MarkdownObject block, char listBullet, int indentLevel)
{
// Indent left by 2 for each level on list.
string indent = Padding(indentLevel * 2);
if (block is ParagraphBlock paragraphBlock)
{
renderer.Write(indent).Write(listBullet).Write(" ").Write(paragraphBlock.Inline);
}
else
{
// If there is a sublist, the block is a ListBlock instead of ParagraphBlock.
if (block is ListBlock subList)
{
foreach (var subListItem in subList)
{
if (subListItem is ListItemBlock subListItemBlock)
{
foreach (var line in subListItemBlock)
{
// Increment indent level for sub list.
RenderWithIndent(renderer, line, listBullet, indentLevel + 1);
}
}
}
}
}
}
private void TryAddTarget(string url, MarkdownObject obj)
{
if (url != null && Uri.TryCreate(url, UriKind.Absolute, out _))
{
obj.GetAttributes().AddPropertyIfNotExist("target", "_blank");
}
}
public BlazorRenderer WriteAttributes(MarkdownObject markdownObject, Func <string, string> classFilter = null)
{
var attributes = markdownObject.TryGetAttributes();
if (attributes != null)
{
if (attributes.Id != null)
{
AddAttribute("id", attributes.Id);
}
if (attributes.Classes != null && attributes.Classes.Count > 0)
{
var @class = string.Join(' ', attributes.Classes.Select(s => classFilter != null ? classFilter(s) : s));
AddAttribute("class", @class);
}
if (attributes.Properties != null && attributes.Properties.Count > 0)
{
foreach (var property in attributes.Properties)
{
AddAttribute(property.Key, property.Value);
}
}
}
return(this);
}
private static string GetType(MarkdownObject mdo)
{
var type = mdo.GetType().Name;
return(mdo is HeadingBlock heading
? type + " " + heading.Level
: type);
}
private static LocationSpan GetLocationSpan(MarkdownObject mdo, CharacterPositionFinder finder)
{
var span = mdo.Span;
var start = finder.GetLineInfo(span.Start);
var end = finder.GetLineInfo(span.End);
return(new LocationSpan(start, end));
}
public void Write(RendererBase renderer, MarkdownObject astNode)
{
var extensionHtmlRenderer = renderer as ExtensionHtmlRenderer;
var extensionBlock = astNode as IExtensionBlock;
var model = (TModel)extensionHtmlRenderer.GetBlockModel(extensionBlock);
Render(extensionHtmlRenderer, model, extensionHtmlRenderer.FormatState);
}
/// <summary>
/// Writes the attached <see cref="HtmlAttributes"/> on the specified <see cref="MarkdownObject"/>.
/// </summary>
/// <param name="markdownObject">The object.</param>
/// <returns></returns>
public HtmlRenderer WriteAttributes(MarkdownObject markdownObject)
{
if (markdownObject == null)
{
ThrowHelper.ArgumentNullException_markdownObject();
}
return(WriteAttributes(markdownObject.TryGetAttributes()));
}
private static string GetLink(string path, MarkdownObject origin)
{
if (InclusionContext.IsInclude && RelativePath.IsRelativePath(path) && PathUtility.IsRelativePath(path) && !RelativePath.IsPathFromWorkingFolder(path) && !path.StartsWith("#", StringComparison.Ordinal))
{
return(((RelativePath)InclusionContext.File + (RelativePath)path).GetPathFromWorkingFolder());
}
return(path);
}
public bool Render(HtmlRenderer renderer, MarkdownObject markdownObject, Action <string> logWarning)
{
renderer.WriteLine("<div class=\"embeddedvideo\">");
renderer.Write($"<iframe").WriteAttributes(markdownObject).WriteLine(">");
renderer.WriteLine("</div>");
return(true);
}
private static void AddStyleClass(MarkdownObject node, string style)
{
if (string.IsNullOrEmpty(style))
{
return;
}
node.GetAttributes().AddClass(style);
}
public override RenderFragment Render(MarkdownObject markdownObject)
{
return(builder =>
{
Builder = builder;
Write(markdownObject);
});
}
/// <summary>
/// Writes the attached <see cref="HtmlAttributes"/> on the specified <see cref="MarkdownObject"/>.
/// </summary>
/// <param name="obj">The object.</param>
/// <returns></returns>
public HtmlRenderer WriteAttributes(MarkdownObject obj)
{
if (obj == null)
{
throw new ArgumentNullException(nameof(obj));
}
return(WriteAttributes(obj.TryGetAttributes()));
}
private bool PageMatchesFilter(MarkdownObject document)
{
if (!string.IsNullOrEmpty(_options.Filter))
{
Log($"Filter provided: {_options.Filter}", LogLevel.Information, 2);
var filters = _options.Filter.Split(",");
var frontmatter = document.Descendants <YamlFrontMatterBlock>().FirstOrDefault();
if (frontmatter == null)
{
Log($"Page has no frontmatter tags", LogLevel.Information, 2);
return(false);
}
var frontmatterTags = new List <string>();
var lastTag = "";
foreach (StringLine frontmatterline in frontmatter.Lines)
{
var splice = frontmatterline.Slice.ToString();
var split = splice.Split(":");
//title:test or <empty>:test2 or tags:<empty>
if (split.Length == 2)
{
//title:
if (string.IsNullOrEmpty(split[1]))
{
lastTag = split[0].Trim();
}
//title:test
else if (!string.IsNullOrEmpty(split[0]))
{
frontmatterTags.Add($"{split[0].Trim()}:{split[1].Trim()}");
}
//:test2
else
{
frontmatterTags.Add($"{lastTag}:{split[1].Trim()}");
}
}
else if (split.Length == 1 && !string.IsNullOrEmpty(split[0]))
{
frontmatterTags.Add($"{lastTag}:{split[0].Trim().Substring(2)}");
}
}
foreach (var filter in filters)
{
if (frontmatterTags.Contains(filter, StringComparer.OrdinalIgnoreCase))
{
return(true);
}
}
return(false);
}
return(true);
}
public override object Render(MarkdownObject markdownObject)
{
OpenElement("div");
AddAttribute("class", "markdown-body");
Write(markdownObject);
CloseElement();
return(this._builder);
}
/// <summary>
/// Returns object location in source
/// </summary>
public static TextSpan ToSourceTextSpan(this MarkdownObject obj)
{
return(new TextSpan
{
iStartLine = obj.Line,
iEndLine = obj.Line,
iStartIndex = obj.Column,
iEndIndex = obj.Column + obj.Span.Length
});
}
public override object Render(MarkdownObject markdownObject)
{
if (markdownObject is MarkdownDocument document)
{
document.SetLinkReferenceDefinition("!Note", new LinkReferenceDefinition("!Note", "", ""));
Write(markdownObject);
XmlWriter.Close();
}
return(null);
}
private void MoveCaretToBlock(MarkdownObject mdobj)
{
var point = new SnapshotPoint(_view.TextBuffer.CurrentSnapshot, mdobj.Span.Start);
_view.Caret.MoveTo(point);
var span = new SnapshotSpan(point, 0);
_view.ViewScroller.EnsureSpanVisible(span);
}
private static string ConvertToHtml(MarkdownObject markdownObject)
{
var builder = new StringBuilder();
var textwriter = new StringWriter(builder);
var renderer = new HtmlRenderer(textwriter);
renderer.Render(markdownObject);
return(builder.ToString());
}
public virtual void Write(RendererBase renderer, MarkdownObject obj)
{
var htmlRenderer = (TRenderer)renderer;
var typedObj = (TObject)obj;
if (_tryWriters is not null && TryWrite(htmlRenderer, typedObj))
{
return;
}
Write(htmlRenderer, typedObj);
}
public void CorrectLinksAndImages(MarkdownObject document, FileInfo file, MarkdownFile mf)
{
Log("Correcting Links and Images");
// walk the document node tree and replace relative image links
// and relative links to markdown pages
foreach (var link in document.Descendants().OfType <LinkInline>())
{
if (!link.Url.StartsWith("http"))
{
string absPath = null;
if (link.Url.StartsWith("/"))
{
absPath = Path.GetFullPath(_path + link.Url);
}
else
{
absPath = Path.GetFullPath(file.Directory.FullName + "/" + link.Url);
}
//the file is a markdown file, create a link to it
var isMarkdown = false;
var fileInfo = new FileInfo(absPath);
if (fileInfo.Exists && fileInfo.Extension.Equals(".md", StringComparison.InvariantCultureIgnoreCase))
{
isMarkdown = true;
}
else if (fileInfo.Exists)
{
link.Url = $"file:///{absPath}";
}
fileInfo = new FileInfo($"{absPath}.md");
if (fileInfo.Exists && fileInfo.Extension.Equals(".md", StringComparison.InvariantCultureIgnoreCase))
{
isMarkdown = true;
}
//only markdown files get a pdf internal link
if (isMarkdown)
{
var relPath = mf.RelativePath + "\\" + link.Url;
relPath = relPath.Replace("/", "\\");
relPath = relPath.Replace("\\", "");
relPath = relPath.Replace(".md", "");
relPath = relPath.ToLower();
Log($"\tMarkdown link: {relPath}");
link.Url = $"#{relPath}";
}
}
CorrectLinksAndImages(link, file, mf);
}
}
private static void UpdateLinks(MarkdownObject markdownObject)
{
if (markdownObject == null)
{
return;
}
if (markdownObject is ContainerBlock containerBlock)
{
if (markdownObject is TripleColonBlock tripleColonBlock && tripleColonBlock.Extension.Name == "image")
{
var htmlAttributes = tripleColonBlock.GetAttributes();
if (htmlAttributes.Properties.Any(p => p.Key == "src"))
{
var srcHtmlAttribute = htmlAttributes.Properties.First(p => p.Key == "src");
var src = srcHtmlAttribute.Value;
htmlAttributes.Properties.Remove(new KeyValuePair <string, string>("src", src));
htmlAttributes.AddProperty("src", GetLink(src, InclusionContext.File, InclusionContext.RootFile, tripleColonBlock));
//block.SetData(typeof(HtmlAttributes), htmlAttributes);
}
}
foreach (var subBlock in containerBlock)
{
UpdateLinks(subBlock);
}
}
else if (markdownObject is LeafBlock leafBlock)
{
if (leafBlock.Inline != null)
{
foreach (var subInline in leafBlock.Inline)
{
UpdateLinks(subInline);
}
}
}
else if (markdownObject is ContainerInline containerInline)
{
foreach (var subInline in containerInline)
{
UpdateLinks(subInline);
}
if (markdownObject is LinkInline linkInline && !linkInline.IsAutoLink)
{
linkInline.GetDynamicUrl = () => GetLink(linkInline.Url, InclusionContext.File, InclusionContext.RootFile, linkInline);
}
}
}
public bool Render(HtmlRenderer renderer, MarkdownObject markdownObject, Action <string> logWarning)
{
var block = (TripleColonBlock)markdownObject;
block.RenderProperties.TryGetValue("submitText", out var buttonText);
renderer.Write("<form").WriteAttributes(block).WriteLine(">");
renderer.WriteLine("<div></div>");
renderer.WriteLine($"<button class=\"button is-primary\" disabled=\"disabled\" type=\"submit\">{buttonText}</button>");
renderer.WriteLine("</form>");
return(true);
}
private static string GetName(MarkdownObject mdo, TextProvider textProvider)
{
switch (mdo)
{
case HeadingBlock heading:
var text = textProvider.GetText(heading);
var name = text.Trim(heading.HeaderChar).Trim();
return(name);
default:
return(string.Empty); // TODO: RKN mdo.GetType().Name;
}
}