Recognize sqlite:filename and amalgalite:filename connection URLs (Fixes #2334)

Author: jeremyevans

CHANGELOG

@@ -1,3 +1,7 @@
+=== master
+
+* Recognize sqlite:filename and amalgalite:filename connection URLs (jeremyevans) (#2334)
+
 === 5.97.0 (2025-10-01)
 
 * Simplify Postgres::PGRange#inspect output (jeremyevans)

lib/sequel/adapters/amalgalite.rb

@@ -62,11 +62,26 @@ class Database < Sequel::Database
 
       # Mimic the file:// uri, by having 2 preceding slashes specify a relative
       # path, and 3 preceding slashes specify an absolute path.
+      # Also support no preceding slashes to specify a relative path.
       def self.uri_to_options(uri) # :nodoc:
-        { :database => (uri.host.nil? && uri.path == '/') ? nil : "#{uri.host}#{uri.path}" }
+        database = if uri.host.nil?
+          case uri.path
+          when '/'
+            nil
+          when nil
+            uri.opaque
+          else
+            uri.path
+          end
+        else
+          "#{uri.host}#{uri.path}"
+        end
+
+        { :database => database }
       end
       private_class_method :uri_to_options
 
+      
       # Connect to the database.  Since SQLite is a file based database,
       # the only options available are :database (to specify the database
       # name), and :timeout, to specify how long to wait for the database to

lib/sequel/adapters/sqlite.rb

@@ -89,8 +89,22 @@ class Database < Sequel::Database
 
       # Mimic the file:// uri, by having 2 preceding slashes specify a relative
       # path, and 3 preceding slashes specify an absolute path.
+      # Also support no preceding slashes to specify a relative path.
       def self.uri_to_options(uri) # :nodoc:
-        { :database => (uri.host.nil? && uri.path == '/') ? nil : "#{uri.host}#{uri.path}" }
+        database = if uri.host.nil?
+          case uri.path
+          when '/'
+            nil
+          when nil
+            uri.opaque
+          else
+            uri.path
+          end
+        else
+          "#{uri.host}#{uri.path}"
+        end
+
+        { :database => database }
       end
 
       private_class_method :uri_to_options

spec/adapters/sqlite_spec.rb

@@ -16,6 +16,17 @@
     DB.class.send(:options_from_uri, URI("scheme://app%2Fdata%2Ftest.db"))[:database].must_equal 'app/data/test.db'
   end if DB.adapter_scheme == :sqlite || DB.adapter_scheme == :amalgalite
 
+  it "should unescape escaped paths in URI for database file" do
+    filename = "spec/sqlite-test-#{$$}.rb"
+    begin
+      File.file?(filename).must_equal false
+      Sequel.connect("#{DB.adapter_scheme}:#{filename}")
+      File.file?(filename).must_equal true
+    ensure
+      File.delete(filename) if File.file?(filename)
+    end
+  end if DB.adapter_scheme == :sqlite || DB.adapter_scheme == :amalgalite
+
   it "should support casting to Date by using the date function" do
     @db.get(Sequel.cast('2012-10-20 11:12:13', Date)).must_equal '2012-10-20'
   end