transport-helper: refactor process_connect_service

A future patch will need to take advantage of the logic which runs and
processes the response of the connect command on a remote helper so
factor out this logic from 'process_connect_service()' and place it into
a helper function 'run_connect()'.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

transport-helper.c

@@ -545,14 +545,13 @@ static int fetch_with_import(struct transport *transport,
 	return 0;
 }
 
-static int process_connect_service(struct transport *transport,
-				   const char *name, const char *exec)
+static int run_connect(struct transport *transport, struct strbuf *cmdbuf)
 {
 	struct helper_data *data = transport->data;
-	struct strbuf cmdbuf = STRBUF_INIT;
-	struct child_process *helper;
-	int r, duped, ret = 0;
+	int ret = 0;
+	int duped;
 	FILE *input;
+	struct child_process *helper;
 
 	helper = get_helper(transport);
 
@@ -568,44 +567,54 @@ static int process_connect_service(struct transport *transport,
 	input = xfdopen(duped, "r");
 	setvbuf(input, NULL, _IONBF, 0);
 
+	sendline(data, cmdbuf);
+	if (recvline_fh(input, cmdbuf))
+		exit(128);
+
+	if (!strcmp(cmdbuf->buf, "")) {
+		data->no_disconnect_req = 1;
+		if (debug)
+			fprintf(stderr, "Debug: Smart transport connection "
+				"ready.\n");
+		ret = 1;
+	} else if (!strcmp(cmdbuf->buf, "fallback")) {
+		if (debug)
+			fprintf(stderr, "Debug: Falling back to dumb "
+				"transport.\n");
+	} else {
+		die("Unknown response to connect: %s",
+			cmdbuf->buf);
+	}
+
+	fclose(input);
+	return ret;
+}
+
+static int process_connect_service(struct transport *transport,
+				   const char *name, const char *exec)
+{
+	struct helper_data *data = transport->data;
+	struct strbuf cmdbuf = STRBUF_INIT;
+	int ret = 0;
+
 	/*
 	 * Handle --upload-pack and friends. This is fire and forget...
 	 * just warn if it fails.
 	 */
 	if (strcmp(name, exec)) {
-		r = set_helper_option(transport, "servpath", exec);
+		int r = set_helper_option(transport, "servpath", exec);
 		if (r > 0)
 			warning("Setting remote service path not supported by protocol.");
 		else if (r < 0)
 			warning("Invalid remote service path.");
 	}
 
-	if (data->connect)
+	if (data->connect) {
 		strbuf_addf(&cmdbuf, "connect %s\n", name);
-	else
-		goto exit;
-
-	sendline(data, &cmdbuf);
-	if (recvline_fh(input, &cmdbuf))
-		exit(128);
-
-	if (!strcmp(cmdbuf.buf, "")) {
-		data->no_disconnect_req = 1;
-		if (debug)
-			fprintf(stderr, "Debug: Smart transport connection "
-				"ready.\n");
-		ret = 1;
-	} else if (!strcmp(cmdbuf.buf, "fallback")) {
-		if (debug)
-			fprintf(stderr, "Debug: Falling back to dumb "
-				"transport.\n");
-	} else
-		die("Unknown response to connect: %s",
-			cmdbuf.buf);
+		ret = run_connect(transport, &cmdbuf);
+	}
 
-exit:
 	strbuf_release(&cmdbuf);
-	fclose(input);
 	return ret;
 }