LibGemini: Add a response length helper to Gemini::Job

Unlike HTTP responses, Gemini responses do not have a length header or a
delimiter for the end of a response. A response simply continues until
the connection is closed and its length is the number of bytes received.
So, the response length method only returns the result if it has
finished

2 files changed, 11 insertions, 0 deletions

diff --git a/Userland/Libraries/LibGemini/Job.cpp b/Userland/Libraries/LibGemini/Job.cpp
index 099b358a74..43412e1363 100644
--- a/Userland/Libraries/LibGemini/Job.cpp
+++ b/Userland/Libraries/LibGemini/Job.cpp
@@ -5,6 +5,7 @@
  */
 
 #include <AK/Debug.h>
+#include <AK/Error.h>
 #include <LibCore/Stream.h>
 #include <LibGemini/GeminiResponse.h>
 #include <LibGemini/Job.h>
@@ -223,4 +224,12 @@ void Job::finish_up()
         did_finish(move(response));
     });
 }
+
+ErrorOr<size_t> Job::response_length() const
+{
+    if (m_state != State::Finished)
+        return AK::Error::from_string_literal("Gemini response has not finished");
+
+    return m_received_size;
+}
 }
diff --git a/Userland/Libraries/LibGemini/Job.h b/Userland/Libraries/LibGemini/Job.h
index c4df2ec504..afa883721b 100644
--- a/Userland/Libraries/LibGemini/Job.h
+++ b/Userland/Libraries/LibGemini/Job.h
@@ -29,6 +29,8 @@ public:
     const URL& url() const { return m_request.url(); }
     Core::Stream::Socket const* socket() const { return m_socket; }
 
+    ErrorOr<size_t> response_length() const;
+
 protected:
     void finish_up();
     void on_socket_connected();