From 56dbe58bbb97a0c7d5416ce16094ccbbf2efe0a6 Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Sun, 10 May 2020 11:11:48 +0200
Subject: [PATCH] AK: Add support for about: URLs

---
 AK/Tests/TestURL.cpp |  9 +++++++++
 AK/URL.cpp           | 12 ++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/AK/Tests/TestURL.cpp b/AK/Tests/TestURL.cpp
index 53251a3cca1..380c15ccfdc 100644
--- a/AK/Tests/TestURL.cpp
+++ b/AK/Tests/TestURL.cpp
@@ -148,4 +148,13 @@ TEST_CASE(file_url_without_hostname)
     EXPECT_EQ(url.to_string(), "file:///my/file");
 }
 
+TEST_CASE(about_url)
+{
+    URL url("about:blank");
+    EXPECT_EQ(url.is_valid(), true);
+    EXPECT_EQ(url.protocol(), "about");
+    EXPECT_EQ(url.path(), "blank");
+    EXPECT_EQ(url.to_string(), "about:blank");
+}
+
 TEST_MAIN(URL)
diff --git a/AK/URL.cpp b/AK/URL.cpp
index 1f84604202b..688d5446fa8 100644
--- a/AK/URL.cpp
+++ b/AK/URL.cpp
@@ -93,6 +93,12 @@ bool URL::parse(const StringView& string)
                 continue;
             }
 
+            if (m_protocol == "about") {
+                buffer.clear();
+                state = State::InPath;
+                continue;
+            }
+
             if (consume() != '/')
                 return false;
             if (consume() != '/')
@@ -245,6 +251,12 @@ String URL::to_string() const
     StringBuilder builder;
     builder.append(m_protocol);
 
+    if (m_protocol == "about") {
+        builder.append(':');
+        builder.append(m_path);
+        return builder.to_string();
+    }
+
     if (m_protocol == "data") {
         builder.append(':');
         builder.append(m_data_mime_type);