protected override MarkdownNode VisitEmoji(EmojiNode emoji)
{
var emojiImageUrl = Emoji.GetImageUrl(emoji.Id, emoji.Name, emoji.IsAnimated);
var jumboClass = _isJumbo ? "emoji--large" : "";
_buffer
.Append($"<img class=\"emoji {jumboClass}\" alt=\"{emoji.Name}\" title=\"{emoji.Name}\" src=\"{emojiImageUrl}\">");
return(base.VisitEmoji(emoji));
}
private static string FormatMarkdownNode(RenderContext context, Node node, bool isJumbo)
{
// Text node
if (node is TextNode textNode)
{
// Return HTML-encoded text
return(HtmlEncode(textNode.Text));
}
// Formatted node
if (node is FormattedNode formattedNode)
{
// Recursively get inner html
var innerHtml = FormatMarkdownNodes(context, formattedNode.Children, false);
// Bold
if (formattedNode.Formatting == TextFormatting.Bold)
{
return($"<strong>{innerHtml}</strong>");
}
// Italic
if (formattedNode.Formatting == TextFormatting.Italic)
{
return($"<em>{innerHtml}</em>");
}
// Underline
if (formattedNode.Formatting == TextFormatting.Underline)
{
return($"<u>{innerHtml}</u>");
}
// Strikethrough
if (formattedNode.Formatting == TextFormatting.Strikethrough)
{
return($"<s>{innerHtml}</s>");
}
// Spoiler
if (formattedNode.Formatting == TextFormatting.Spoiler)
{
return($"<span class=\"spoiler spoiler--hidden\" onclick=\"showSpoiler(event, this)\"><span class=\"spoiler-text\">{innerHtml}</span></span>");
}
// Quote
if (formattedNode.Formatting == TextFormatting.Quote)
{
return($"<div class=\"quote\">{innerHtml}</div>");
}
}
// Inline code block node
if (node is InlineCodeBlockNode inlineCodeBlockNode)
{
return($"<span class=\"pre pre--inline\">{HtmlEncode(inlineCodeBlockNode.Code)}</span>");
}
// Multi-line code block node
if (node is MultiLineCodeBlockNode multilineCodeBlockNode)
{
// Set CSS class for syntax highlighting
var highlightCssClass = !string.IsNullOrWhiteSpace(multilineCodeBlockNode.Language)
? $"language-{multilineCodeBlockNode.Language}"
: "nohighlight";
return($"<div class=\"pre pre--multiline {highlightCssClass}\">{HtmlEncode(multilineCodeBlockNode.Code)}</div>");
}
// Mention node
if (node is MentionNode mentionNode)
{
// Meta mention node
if (mentionNode.Type == MentionType.Meta)
{
return($"<span class=\"mention\">@{HtmlEncode(mentionNode.Id)}</span>");
}
// User mention node
if (mentionNode.Type == MentionType.User)
{
var user = context.MentionableUsers.FirstOrDefault(u => u.Id == mentionNode.Id) ??
User.CreateUnknownUser(mentionNode.Id);
var nick = Guild.GetUserNick(context.Guild, user);
return($"<span class=\"mention\" title=\"{HtmlEncode(user.FullName)}\">@{HtmlEncode(nick)}</span>");
}
// Channel mention node
if (mentionNode.Type == MentionType.Channel)
{
var channel = context.MentionableChannels.FirstOrDefault(c => c.Id == mentionNode.Id) ??
Channel.CreateDeletedChannel(mentionNode.Id);
return($"<span class=\"mention\">#{HtmlEncode(channel.Name)}</span>");
}
// Role mention node
if (mentionNode.Type == MentionType.Role)
{
var role = context.MentionableRoles.FirstOrDefault(r => r.Id == mentionNode.Id) ??
Role.CreateDeletedRole(mentionNode.Id);
var style = "";
if (role.Color != Color.Black)
{
style = $"style=\"color: {role.ColorAsHex}; background-color: rgba({role.ColorAsRgb}, 0.1); font-weight: 400;\"";
}
return($"<span class=\"mention\" {style}>@{HtmlEncode(role.Name)}</span>");
}
}
// Emoji node
if (node is EmojiNode emojiNode)
{
// Get emoji image URL
var emojiImageUrl = Emoji.GetImageUrl(emojiNode.Id, emojiNode.Name, emojiNode.IsAnimated);
// Make emoji large if it's jumbo
var jumboableCssClass = isJumbo ? "emoji--large" : null;
return
($"<img class=\"emoji {jumboableCssClass}\" alt=\"{emojiNode.Name}\" title=\"{emojiNode.Name}\" src=\"{emojiImageUrl}\" />");
}
// Link node
if (node is LinkNode linkNode)
{
// Extract message ID if the link points to a Discord message
var linkedMessageId = Regex.Match(linkNode.Url, "^https?://discordapp.com/channels/.*?/(\\d+)/?$").Groups[1].Value;
return(string.IsNullOrWhiteSpace(linkedMessageId)
? $"<a href=\"{Uri.EscapeUriString(linkNode.Url)}\">{HtmlEncode(linkNode.Title)}</a>"
: $"<a href=\"{Uri.EscapeUriString(linkNode.Url)}\" onclick=\"scrollToMessage(event, '{linkedMessageId}')\">{HtmlEncode(linkNode.Title)}</a>");
}
// Throw on unexpected nodes
throw new InvalidOperationException($"Unexpected node [{node.GetType()}].");
}
private string FormatMarkdown(Node node, bool isJumbo)
{
// Text node
if (node is TextNode textNode)
{
// Return HTML-encoded text
return(HtmlEncode(textNode.Text));
}
// Formatted node
if (node is FormattedNode formattedNode)
{
// Recursively get inner html
var innerHtml = FormatMarkdown(formattedNode.Children, false);
// Bold
if (formattedNode.Formatting == TextFormatting.Bold)
{
return($"<strong>{innerHtml}</strong>");
}
// Italic
if (formattedNode.Formatting == TextFormatting.Italic)
{
return($"<em>{innerHtml}</em>");
}
// Underline
if (formattedNode.Formatting == TextFormatting.Underline)
{
return($"<u>{innerHtml}</u>");
}
// Strikethrough
if (formattedNode.Formatting == TextFormatting.Strikethrough)
{
return($"<s>{innerHtml}</s>");
}
// Spoiler
if (formattedNode.Formatting == TextFormatting.Spoiler)
{
return($"<span class=\"spoiler\">{innerHtml}</span>");
}
// Quote
if (formattedNode.Formatting == TextFormatting.Quote)
{
return($"<div class=\"quote\">{innerHtml}</div>");
}
}
// Inline code block node
if (node is InlineCodeBlockNode inlineCodeBlockNode)
{
return($"<span class=\"pre pre--inline\">{HtmlEncode(inlineCodeBlockNode.Code)}</span>");
}
// Multi-line code block node
if (node is MultiLineCodeBlockNode multilineCodeBlockNode)
{
// Set CSS class for syntax highlighting
var highlightCssClass = !multilineCodeBlockNode.Language.IsNullOrWhiteSpace()
? $"language-{multilineCodeBlockNode.Language}"
: "nohighlight";
return($"<div class=\"pre pre--multiline {highlightCssClass}\">{HtmlEncode(multilineCodeBlockNode.Code)}</div>");
}
// Mention node
if (node is MentionNode mentionNode)
{
// Meta mention node
if (mentionNode.Type == MentionType.Meta)
{
return($"<span class=\"mention\">@{HtmlEncode(mentionNode.Id)}</span>");
}
// User mention node
if (mentionNode.Type == MentionType.User)
{
var user = _chatLog.Mentionables.GetUser(mentionNode.Id);
return($"<span class=\"mention\" title=\"{HtmlEncode(user.FullName)}\">@{HtmlEncode(user.Name)}</span>");
}
// Channel mention node
if (mentionNode.Type == MentionType.Channel)
{
var channel = _chatLog.Mentionables.GetChannel(mentionNode.Id);
return($"<span class=\"mention\">#{HtmlEncode(channel.Name)}</span>");
}
// Role mention node
if (mentionNode.Type == MentionType.Role)
{
var role = _chatLog.Mentionables.GetRole(mentionNode.Id);
return($"<span class=\"mention\">@{HtmlEncode(role.Name)}</span>");
}
}
// Emoji node
if (node is EmojiNode emojiNode)
{
// Get emoji image URL
var emojiImageUrl = Emoji.GetImageUrl(emojiNode.Id, emojiNode.Name, emojiNode.IsAnimated);
// Make emoji large if it's jumbo
var jumboableCssClass = isJumbo ? "emoji--large" : null;
return($"<img class=\"emoji {jumboableCssClass}\" alt=\"{emojiNode.Name}\" title=\"{emojiNode.Name}\" src=\"{emojiImageUrl}\" />");
}
// Link node
if (node is LinkNode linkNode)
{
// Extract message ID if the link points to a Discord message
var linkedMessageId = Regex.Match(linkNode.Url, "^https?://discordapp.com/channels/.*?/(\\d+)/?$").Groups[1].Value;
return(linkedMessageId.IsNullOrWhiteSpace()
? $"<a href=\"{Uri.EscapeUriString(linkNode.Url)}\">{HtmlEncode(linkNode.Title)}</a>"
: $"<a href=\"{Uri.EscapeUriString(linkNode.Url)}\" onclick=\"scrollToMessage(event, '{linkedMessageId}')\">{HtmlEncode(linkNode.Title)}</a>");
}
// Throw on unexpected nodes
throw new InvalidOperationException($"Unexpected node: [{node.GetType()}].");
}
private string FormatMarkdown(Node node, bool isJumbo)
{
// Text node
if (node is TextNode textNode)
{
// Return HTML-encoded text
return(HtmlEncode(textNode.Text));
}
// Formatted node
if (node is FormattedNode formattedNode)
{
// Recursively get inner html
var innerHtml = FormatMarkdown(formattedNode.Children, false);
// Bold
if (formattedNode.Formatting == TextFormatting.Bold)
{
return($"<strong>{innerHtml}</strong>");
}
// Italic
if (formattedNode.Formatting == TextFormatting.Italic)
{
return($"<em>{innerHtml}</em>");
}
// Underline
if (formattedNode.Formatting == TextFormatting.Underline)
{
return($"<u>{innerHtml}</u>");
}
// Strikethrough
if (formattedNode.Formatting == TextFormatting.Strikethrough)
{
return($"<s>{innerHtml}</s>");
}
// Spoiler
if (formattedNode.Formatting == TextFormatting.Spoiler)
{
return($"<span class=\"spoiler\">{innerHtml}</span>");
}
}
// Inline code block node
if (node is InlineCodeBlockNode inlineCodeBlockNode)
{
return($"<span class=\"pre pre--inline\">{HtmlEncode(inlineCodeBlockNode.Code)}</span>");
}
// Multi-line code block node
if (node is MultilineCodeBlockNode multilineCodeBlockNode)
{
// Set language class for syntax highlighting
var languageCssClass = !multilineCodeBlockNode.Language.IsNullOrWhiteSpace()
? "language-" + multilineCodeBlockNode.Language
: null;
return($"<div class=\"pre pre--multiline {languageCssClass}\">{HtmlEncode(multilineCodeBlockNode.Code)}</div>");
}
// Mention node
if (node is MentionNode mentionNode)
{
// Meta mention node
if (mentionNode.Type == MentionType.Meta)
{
return($"<span class=\"mention\">@{HtmlEncode(mentionNode.Id)}</span>");
}
// User mention node
if (mentionNode.Type == MentionType.User)
{
var user = _chatLog.Mentionables.GetUser(mentionNode.Id);
return($"<span class=\"mention\" title=\"{HtmlEncode(user.FullName)}\">@{HtmlEncode(user.Name)}</span>");
}
// Channel mention node
if (mentionNode.Type == MentionType.Channel)
{
var channel = _chatLog.Mentionables.GetChannel(mentionNode.Id);
return($"<span class=\"mention\">#{HtmlEncode(channel.Name)}</span>");
}
// Role mention node
if (mentionNode.Type == MentionType.Role)
{
var role = _chatLog.Mentionables.GetRole(mentionNode.Id);
return($"<span class=\"mention\">@{HtmlEncode(role.Name)}</span>");
}
}
// Emoji node
if (node is EmojiNode emojiNode)
{
// Get emoji image URL
var emojiImageUrl = Emoji.GetImageUrl(emojiNode.Id, emojiNode.Name, emojiNode.IsAnimated);
// Make emoji large if it's jumbo
var jumboableCssClass = isJumbo ? "emoji--large" : null;
return($"<img class=\"emoji {jumboableCssClass}\" alt=\"{emojiNode.Name}\" title=\"{emojiNode.Name}\" src=\"{emojiImageUrl}\" />");
}
// Link node
if (node is LinkNode linkNode)
{
return($"<a href=\"{Uri.EscapeUriString(linkNode.Url)}\">{HtmlEncode(linkNode.Title)}</a>");
}
// All other nodes - simply return source
return(node.Source);
}
