From 6f709338709435b2cf651e807ee1984370797243 Mon Sep 17 00:00:00 2001
From: Heinrich-XIAO <74563446+Heinrich-XIAO@users.noreply.github.com>
Date: Tue, 4 Feb 2025 00:10:14 +0000
Subject: [PATCH] feat: add underline support

---
 core/Util/Util.vala | 63 +++++++++++++++++++++++++++++++++++++++------
 1 file changed, 55 insertions(+), 8 deletions(-)

diff --git a/core/Util/Util.vala b/core/Util/Util.vala
index de769896d..3f33eee62 100644
--- a/core/Util/Util.vala
+++ b/core/Util/Util.vala
@@ -1098,13 +1098,18 @@ We hope you’ll enjoy using Planify!""");
         var text = escape_text (_text);
 
         try {
-            Regex mailto_regex = /(?P<mailto>[a-zA-Z0-9\._\%\+\-]+@[a-zA-Z0-9\-\.]+\.[a-zA-Z]+(\S*))/; // vala-lint=space-before-paren
-            Regex url_regex = /(?P<url>(http|https)\:\/\/[a-zA-Z0-9\-\.]+\.[a-zA-Z]+(\/\S*))/; // vala-lint=space-before-paren
+            Regex mailto_regex = /(?P<mailto>[a-zA-Z0-9\._\%\+\-]+@[a-zA-Z0-9\-\.]+\.[a-zA-Z]+(\S*))/;
+            Regex url_regex = /(?P<url>(http|https)\:\/\/[a-zA-Z0-9\-\.]+\.[a-zA-Z]+(\/\S*))/;
             Regex url_markdown = new Regex ("\\[([^\\]]+)\\]\\(([^\\)]+)\\)");
-                    
-            Regex italic_bold_regex = /\*\*\*(.*?)\*\*\*/; // vala-lint=space-before-paren
-            Regex bold_regex = /\*\*(.*?)\*\*/; // vala-lint=space-before-paren
-            Regex italic_regex = /\*(.*?)\*/; // vala-lint=space-before-paren
+
+            Regex italic_bold_regex = /\*\*\*(.*?)\*\*\*/;
+            Regex bold_regex = /\*\*(.*?)\*\*/;
+            Regex italic_regex = /\*(.*?)\*/;
+            Regex underline_regex = /_(.*?)_/;
+
+            Regex italic_bold_underline_regex = /\*\*\*_([^*]+)_\*\*\*/;
+            Regex bold_underline_regex = /\*\*_([^*]+)_\*\*/;
+            Regex italic_underline_regex = /\*_(.*?)_\*/;
 
             MatchInfo info;
 
@@ -1127,7 +1132,6 @@ We hope you’ll enjoy using Planify!""");
             if (url_regex.match (text, 0, out info)) {
                 do {
                     var url = info.fetch_named ("url");
-
                     if (!url_exists (url, markdown_urls)) {
                         urls.append (url);
                     }
@@ -1155,12 +1159,39 @@ We hope you’ll enjoy using Planify!""");
                 } while (info.next ());
             }
 
+            Gee.ArrayList<RegexMarkdown> italic_bold_underline = new Gee.ArrayList<RegexMarkdown> ();
+            if (italic_bold_underline_regex.match (text, 0, out info)) {
+                do {
+                    italic_bold_underline.add (new RegexMarkdown (info.fetch (0), info.fetch (1)));
+                } while (info.next ());
+            }
+
+            Gee.ArrayList<RegexMarkdown> bold_underline = new Gee.ArrayList<RegexMarkdown> ();
+            if (bold_underline_regex.match (text, 0, out info)) {
+                do {
+                    bold_underline.add (new RegexMarkdown (info.fetch (0), info.fetch (1)));
+                } while (info.next ());
+            }
+
+            Gee.ArrayList<RegexMarkdown> italic_underline = new Gee.ArrayList<RegexMarkdown> ();
+            if (italic_underline_regex.match (text, 0, out info)) {
+                do {
+                    italic_underline.add (new RegexMarkdown (info.fetch (0), info.fetch (1)));
+                } while (info.next ());
+            }
+
+            Gee.ArrayList<RegexMarkdown> underlines = new Gee.ArrayList<RegexMarkdown> ();
+            if (underline_regex.match (text, 0, out info)) {
+                do {
+                    underlines.add (new RegexMarkdown (info.fetch (0), info.fetch (1)));
+                } while (info.next ());
+            }
+
             string converted = text;
 
             foreach (RegexMarkdown m in markdown_urls) {
                 string markdown_text = m.text;
                 string markdown_link = m.extra;
-
                 string urlAsLink = @"<a href=\"$markdown_link\">$markdown_text</a>";
                 converted = converted.replace (m.match, urlAsLink);
             }
@@ -1173,6 +1204,22 @@ We hope you’ll enjoy using Planify!""");
                 converted = converted.replace (email, @"<a href=\"mailto:$email\">$email</a>");
             });
 
+            foreach (RegexMarkdown m in italic_bold_underline) {
+                converted = converted.replace (m.match, "<i><b><u>" + m.text + "</u></b></i>");
+            }
+
+            foreach (RegexMarkdown m in bold_underline) {
+                converted = converted.replace (m.match, "<b><u>" + m.text + "</u></b>");
+            }
+
+            foreach (RegexMarkdown m in italic_underline) {
+                converted = converted.replace (m.match, "<i><u>" + m.text + "</u></i>");
+            }
+
+            foreach (RegexMarkdown m in underlines) {
+                converted = converted.replace (m.match, "<u>" + m.text + "</u>");
+            }
+
             foreach (RegexMarkdown m in italic_bold) {
                 converted = converted.replace (m.match, "<i><b>" + m.text + "</b></i>");
             }