add initial support for data scheme

browser.py

@@ -8,6 +8,7 @@ SUPPORTED_SCHEMES = [
     "http",
     "https",
     "file",
+    "data"
 ]
 
 DEFAULT_FILE = "default.html"
@@ -22,6 +23,9 @@ class URL:
         self.query: str = ""
         self.fragment: str = ""
         self.default_port = False
+        self.media_type = ""
+        self.media_encoding = ""
+        self.data = ""
         if url_string is not None:
             parse_url(url_string, self)
 
@@ -75,10 +79,13 @@ class Request:
         self.request_string += "\r\n"
 
     def send_request(self, *args, **kwargs):
-        if self.url.scheme in ["http", "https"]:
+        if hasattr(self, f"{self.url.scheme.lower()}_request"):
+            request = getattr(self, f"{self.url.scheme.lower()}_request")
+            return request(*args, **kwargs)
+        raise ValueError(f"scheme '{self.url.scheme}' is not supported.")
+
+    def https_request(self, *args, **kwargs):
         return self.http_request(*args, **kwargs)
-        elif self.url.scheme == "file":
-            return self.file_request()
 
     def http_request(self, method: str = "GET", headers: dict = None) -> str:
         if headers is not None:
@@ -121,6 +128,9 @@ class Request:
         with open(self.url.path) as f:
             return f.read()
 
+    def data_request(self):
+        return self.url.data
+
 
 def parse_url(url_string: str, url: URL | None = None) -> tuple[URL, bool]:
     has_authority = False
@@ -164,26 +174,29 @@ def parse_url(url_string: str, url: URL | None = None) -> tuple[URL, bool]:
         if url_string.startswith("#"):
             url.fragment = url_string[1:]
 
-        if url.scheme == "http":
+        match url.scheme:
+            case "http":
                 url.port = 80
                 url.default_port = True
-        elif url.scheme == "https":
+            case "https":
                 url.port = 443
                 url.default_port = False
-        if url.scheme in ["http", "https"]:
+            case "file":
-            if url.path == "" or url.path is None:
-                url.path = "/"
-        if url.scheme == "file":
-            print(f"{url.scheme=}")
-            print(f"{url.host=}")
-            print(f"{url.port=}")
-            print(f"{url.path=}")
-            print(f"{url.query=}")
-            print(f"{url.fragment=}")
                 if sys.platform == "win32" and url.path.startswith("/") and ":" in url.path:
                     url.path = url.path[1:]
                 if url.path == "" or url.path == "/":
                     return url, False
+            case "data":
+                if url.host != "":
+                    return url, False
+                url.media_type, url.data = url.path.split(",", 1)
+                if ";" in url.media_type:
+                    url.media_type, url.media_encoding = url.media_type.split(";", 1)
+
+        if url.scheme in ["http", "https"]:
+            if url.path == "" or url.path is None:
+                url.path = "/"
+
 
         if ":" in url.host:
             url.host, port = url.host.split(":", 1)

tests/url_test.py

@@ -147,6 +147,16 @@ from browser import Request
             "",
             True,
         ),
+        (
+            "data:text,This is some text",
+            "data",
+            "",
+            -1,
+            "text,This is some text",
+            "",
+            "",
+            True,
+        ),
     ],
 )
 def test_url_parsing(url_string, scheme, host, port, path, query, fragment, parse_success):
@@ -160,6 +170,40 @@ def test_url_parsing(url_string, scheme, host, port, path, query, fragment, pars
     assert success == parse_success
 
 
+@pytest.mark.parametrize(
+    "url_string,media_type,media_encoding,data,parse_success",
+    [
+        (
+            "data:text,This is some text",
+            "text",
+            "",
+            "This is some text",
+            True,
+        ),
+        (
+            "data:text/plain,This is some text",
+            "text/plain",
+            "",
+            "This is some text",
+            True,
+        ),
+        (
+            "data:text/plain;base64,This is some text",
+            "text/plain",
+            "base64",
+            "This is some text",
+            True,
+        ),
+    ],
+)
+def test_data_url_parsing(url_string, media_type, media_encoding, data, parse_success):
+    url, success = parse_url(url_string)
+    assert url.media_type == media_type
+    assert url.media_encoding == media_encoding
+    assert url.data == data
+    assert success == parse_success
+
+
 @pytest.mark.parametrize(
     "http_server,url_string",
     [