private static void handleAdvanced(Regex regex, MessageFormatterResult result, int startIndex = 0)
{
foreach (Match m in regex.Matches(result.Text, startIndex))
{
var index = m.Index;
var link = m.Groups["link"].Value;
var indexLength = link.Length;
var details = getLinkDetails(link);
result.Links.Add(new Link(link, index, indexLength, details.Action, details.Argument));
}
}
private static void handleMatches(Regex regex, string display, string link, MessageFormatterResult result, int startIndex = 0, LinkAction?linkActionOverride = null, char[] escapeChars = null)
{
int captureOffset = 0;
foreach (Match m in regex.Matches(result.Text, startIndex))
{
var index = m.Index - captureOffset;
var displayText = string.Format(display,
m.Groups[0],
m.Groups["text"].Value,
m.Groups["url"].Value).Trim();
var linkText = string.Format(link,
m.Groups[0],
m.Groups["text"].Value,
m.Groups["url"].Value).Trim();
if (displayText.Length == 0 || linkText.Length == 0)
{
continue;
}
// Remove backslash escapes in front of the characters provided in escapeChars
if (escapeChars != null)
{
displayText = escapeChars.Aggregate(displayText, (current, c) => current.Replace($"\\{c}", c.ToString()));
}
// Check for encapsulated links
if (result.Links.Find(l => (l.Index <= index && l.Index + l.Length >= index + m.Length) || (index <= l.Index && index + m.Length >= l.Index + l.Length)) == null)
{
result.Text = result.Text.Remove(index, m.Length).Insert(index, displayText);
//since we just changed the line display text, offset any already processed links.
result.Links.ForEach(l => l.Index -= l.Index > index ? m.Length - displayText.Length : 0);
var details = GetLinkDetails(linkText);
result.Links.Add(new Link(linkText, index, displayText.Length, linkActionOverride ?? details.Action, details.Argument));
//adjust the offset for processing the current matches group.
captureOffset += m.Length - displayText.Length;
}
}
}
private static void handleAdvanced(Regex regex, MessageFormatterResult result, int startIndex = 0)
{
foreach (Match m in regex.Matches(result.Text, startIndex))
{
var index = m.Index;
var linkText = m.Groups["link"].Value;
var indexLength = linkText.Length;
var details = GetLinkDetails(linkText);
var link = new Link(linkText, index, indexLength, details.Action, details.Argument);
// sometimes an already-processed formatted link can reduce to a simple URL, too
// (example: [mean example - https://osu.ppy.sh](https://osu.ppy.sh))
// therefore we need to check if any of the pre-existing links contains the raw one we found
if (result.Links.All(existingLink => !existingLink.Overlaps(link)))
{
result.Links.Add(link);
}
}
}
private static void handleMatches(Regex regex, string display, string link, MessageFormatterResult result, int startIndex = 0, LinkAction?linkActionOverride = null)
{
int captureOffset = 0;
foreach (Match m in regex.Matches(result.Text, startIndex))
{
var index = m.Index - captureOffset;
var displayText = string.Format(display,
m.Groups[0],
m.Groups.Count > 1 ? m.Groups[1].Value : "",
m.Groups.Count > 2 ? m.Groups[2].Value : "").Trim();
var linkText = string.Format(link,
m.Groups[0],
m.Groups.Count > 1 ? m.Groups[1].Value : "",
m.Groups.Count > 2 ? m.Groups[2].Value : "").Trim();
if (displayText.Length == 0 || linkText.Length == 0)
{
continue;
}
// Check for encapsulated links
if (result.Links.Find(l => l.Index <= index && l.Index + l.Length >= index + m.Length || index <= l.Index && index + m.Length >= l.Index + l.Length) == null)
{
result.Text = result.Text.Remove(index, m.Length).Insert(index, displayText);
//since we just changed the line display text, offset any already processed links.
result.Links.ForEach(l => l.Index -= l.Index > index ? m.Length - displayText.Length : 0);
var details = getLinkDetails(linkText);
result.Links.Add(new Link(linkText, index, displayText.Length, linkActionOverride ?? details.Action, details.Argument));
//adjust the offset for processing the current matches group.
captureOffset += m.Length - displayText.Length;
}
}
}
private static MessageFormatterResult format(string toFormat, int startIndex = 0, int space = 3)
{
var result = new MessageFormatterResult(toFormat);
// handle the [link display] format
handleMatches(new_link_regex, "{1}", "{2}", result, startIndex, escapeChars: new[] { '[', ']' });
// handle the standard markdown []() format
handleMatches(markdown_link_regex, "{1}", "{2}", result, startIndex, escapeChars: new[] { '[', ']' });
// handle the ()[] link format
handleMatches(old_link_regex, "{1}", "{2}", result, startIndex, escapeChars: new[] { '(', ')' });
// handle wiki links
handleMatches(wiki_regex, "{1}", "https://osu.ppy.sh/wiki/{1}", result, startIndex);
// handle bare links
handleAdvanced(advanced_link_regex, result, startIndex);
// handle editor times
handleMatches(time_regex, "{0}", "osu://edit/{0}", result, startIndex, LinkAction.OpenEditorTimestamp);
// handle channels
handleMatches(channel_regex, "{0}", "osu://chan/{0}", result, startIndex, LinkAction.OpenChannel);
var empty = "";
while (space-- > 0)
{
empty += "\0";
}
handleMatches(emoji_regex, empty, "{0}", result, startIndex);
return(result);
}
