/// <summary> /// Attempts to parse an inline code span. /// </summary> /// <param name="markdown"> The markdown text. </param> /// <param name="start"> The location to start parsing. </param> /// <param name="maxEnd"> The location to stop parsing. </param> /// <returns> A parsed inline code span, or <c>null</c> if this is not an inline code span. </returns> internal static InlineParseResult Parse(string markdown, int start, int maxEnd) { // Check the first char. if (start == maxEnd || markdown[start] != '`') { return(null); } // There is an alternate syntax that starts and ends with two backticks. // e.g. ``sdf`sdf`` would be "sdf`sdf". int innerStart = start + 1; int innerEnd, end; if (innerStart < maxEnd && markdown[innerStart] == '`') { // Alternate double back-tick syntax. innerStart++; // Find the end of the span. innerEnd = Common.IndexOf(markdown, "``", innerStart, maxEnd); if (innerEnd == -1) { return(null); } end = innerEnd + 2; } else { // Standard single backtick syntax. // Find the end of the span. innerEnd = Common.IndexOf(markdown, '`', innerStart, maxEnd); if (innerEnd == -1) { return(null); } end = innerEnd + 1; } // The span must contain at least one character. if (innerStart == innerEnd) { return(null); } // We found something! var result = new CodeInline { Text = markdown.Substring(innerStart, innerEnd - innerStart).Trim(' ', '\t', '\r', '\n') }; return(new InlineParseResult(result, start, end)); }
/// <summary> /// Renders a code element /// </summary> /// <param name="element"> The parsed inline element to render. </param> /// <param name="context"> Persistent state. </param> protected override void RenderCodeRun(CodeInline element, IRenderContext context) { var localContext = context as InlineRenderContext; if (localContext == null) { throw new RenderContextIncorrectException(); } var text = CreateTextBlock(localContext); text.Text = CollapseWhitespace(context, element.Text); text.FontFamily = InlineCodeFontFamily ?? FontFamily; text.Foreground = InlineCodeForeground ?? Foreground; if (localContext.WithinItalics) { text.FontStyle = FontStyle.Italic; } if (localContext.WithinBold) { text.FontWeight = FontWeights.Bold; } var borderthickness = InlineCodeBorderThickness; var padding = InlineCodePadding; var border = new Border { BorderThickness = borderthickness, BorderBrush = InlineCodeBorderBrush, Background = InlineCodeBackground, Child = text, Padding = padding, Margin = InlineCodeMargin }; // Aligns content in InlineUI, see https://social.msdn.microsoft.com/Forums/silverlight/en-US/48b5e91e-efc5-4768-8eaf-f897849fcf0b/richtextbox-inlineuicontainer-vertical-alignment-issue?forum=silverlightarchieve border.RenderTransform = new TranslateTransform { Y = 4 }; var inlineUIContainer = new InlineUIContainer { Child = border, }; // Add it to the current inlines localContext.InlineCollection.Add(inlineUIContainer); }
static Common() { BoldItalicTextInline.AddTripChars(_triggerList); BoldTextInline.AddTripChars(_triggerList); ItalicTextInline.AddTripChars(_triggerList); MarkdownLinkInline.AddTripChars(_triggerList); HyperlinkInline.AddTripChars(_triggerList); CommentInline.AddTripChars(_triggerList); StrikethroughTextInline.AddTripChars(_triggerList); SuperscriptTextInline.AddTripChars(_triggerList); SubscriptTextInline.AddTripChars(_triggerList); CodeInline.AddTripChars(_triggerList); ImageInline.AddTripChars(_triggerList); EmojiInline.AddTripChars(_triggerList); LinkAnchorInline.AddTripChars(_triggerList); // Create an array of characters to search against using IndexOfAny. _tripCharacters = _triggerList.Select(trigger => trigger.FirstChar).Distinct().ToArray(); }
/// <summary> /// Finds the next inline element by matching trip chars and verifying the match. /// </summary> /// <param name="markdown"> The markdown text to parse. </param> /// <param name="start"> The position to start parsing. </param> /// <param name="end"> The position to stop parsing. </param> /// <param name="ignoreLinks"> Indicates whether to parse links. </param> /// <returns>Returns the next element</returns> private static InlineParseResult FindNextInlineElement(string markdown, int start, int end, bool ignoreLinks) { // Search for the next inline sequence. for (int pos = start; pos < end; pos++) { // IndexOfAny should be the fastest way to skip characters we don't care about. pos = markdown.IndexOfAny(_tripCharacters, pos, end - pos); if (pos < 0) { break; } // Find the trigger(s) that matched. char currentChar = markdown[pos]; foreach (InlineTripCharHelper currentTripChar in _triggerList) { // Check if our current char matches the suffix char. if (currentChar == currentTripChar.FirstChar) { // Don't match if the previous character was a backslash. if (pos > start && markdown[pos - 1] == '\\') { continue; } // If we are here we have a possible match. Call into the inline class to verify. InlineParseResult parseResult = null; switch (currentTripChar.Method) { case InlineParseMethod.BoldItalic: parseResult = BoldItalicTextInline.Parse(markdown, pos, end); break; case InlineParseMethod.Comment: parseResult = CommentInline.Parse(markdown, pos, end); break; case InlineParseMethod.LinkReference: parseResult = LinkAnchorInline.Parse(markdown, pos, end); break; case InlineParseMethod.Bold: parseResult = BoldTextInline.Parse(markdown, pos, end); break; case InlineParseMethod.Italic: parseResult = ItalicTextInline.Parse(markdown, pos, end); break; case InlineParseMethod.MarkdownLink: if (!ignoreLinks) { parseResult = MarkdownLinkInline.Parse(markdown, pos, end); } break; case InlineParseMethod.AngleBracketLink: if (!ignoreLinks) { parseResult = HyperlinkInline.ParseAngleBracketLink(markdown, pos, end); } break; case InlineParseMethod.Url: if (!ignoreLinks) { parseResult = HyperlinkInline.ParseUrl(markdown, pos, end); } break; case InlineParseMethod.RedditLink: if (!ignoreLinks) { parseResult = HyperlinkInline.ParseRedditLink(markdown, pos, end); } break; case InlineParseMethod.PartialLink: if (!ignoreLinks) { parseResult = HyperlinkInline.ParsePartialLink(markdown, pos, end); } break; case InlineParseMethod.Email: if (!ignoreLinks) { parseResult = HyperlinkInline.ParseEmailAddress(markdown, start, pos, end); } break; case InlineParseMethod.Strikethrough: parseResult = StrikethroughTextInline.Parse(markdown, pos, end); break; case InlineParseMethod.Superscript: parseResult = SuperscriptTextInline.Parse(markdown, pos, end); break; case InlineParseMethod.Subscript: parseResult = SubscriptTextInline.Parse(markdown, pos, end); break; case InlineParseMethod.Code: parseResult = CodeInline.Parse(markdown, pos, end); break; case InlineParseMethod.Image: parseResult = ImageInline.Parse(markdown, pos, end); break; case InlineParseMethod.Emoji: parseResult = EmojiInline.Parse(markdown, pos, end); break; } if (parseResult != null) { return(parseResult); } } } } // If we didn't find any elements we have a normal text block. // Let us consume the entire range. return(new InlineParseResult(TextRunInline.Parse(markdown, start, end), start, end)); }