From dfb23931e31bd997527adaf8be6ebe4e9667f4a5 Mon Sep 17 00:00:00 2001
From: yggverse <yggverse@project>
Date: Tue, 12 Nov 2024 07:25:36 +0200
Subject: [PATCH] fix protocol-relative URI links resolve #1

---
 src/line/link.rs | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/src/line/link.rs b/src/line/link.rs
index 5cbff40..5716d53 100644
--- a/src/line/link.rs
+++ b/src/line/link.rs
@@ -23,7 +23,18 @@ impl Link {
         );
 
         // Detect address required to continue
-        let unresolved_address = regex.get(1)?;
+        let mut unresolved_address = regex.get(1)?.to_string();
+
+        // Seems that [Uri resolver](https://docs.gtk.org/glib/type_func.Uri.resolve_relative.html)
+        // does not support [protocol-relative URI](https://datatracker.ietf.org/doc/html/rfc3986#section-4.2)
+        // resolve manually
+        if unresolved_address.starts_with("//:") {
+            let scheme = match base {
+                Some(base) => base.scheme(),
+                None => return None,
+            };
+            unresolved_address = unresolved_address.replace("//:", &format!("{scheme}://"));
+        }
 
         // Convert address to the valid URI
         let uri = match base {
@@ -54,7 +65,7 @@ impl Link {
             // Base resolve not requested
             None => {
                 // Just try convert address to valid URI
-                match Uri::parse(unresolved_address, UriFlags::NONE) {
+                match Uri::parse(&unresolved_address, UriFlags::NONE) {
                     Ok(unresolved_uri) => unresolved_uri,
                     Err(_) => return None,
                 }