Add uv_is_tty()

include/uv.h

@@ -600,6 +600,11 @@ struct uv_tty_s {
   UV_TTY_PRIVATE_FIELDS
 };
 
+/*
+ * Returns 1 if file is associated with a Console/TTY 0 otherwise.
+ */
+int uv_is_tty(uv_file file);
+
 int uv_tty_init(uv_loop_t*, uv_tty_t*, uv_file fd);
 
 /*

src/unix/tty.c

@@ -67,3 +67,7 @@ fatal:
   return -1;
 }
 
+
+int uv_is_tty(uv_file file) {
+  return isatty(file);
+}

src/win/tty.c

@@ -35,3 +35,10 @@ int uv_tty_set_mode(uv_tty_t* tty, int mode) {
   assert(0 && "implement me");
   return -1;
 }
+
+
+int uv_is_tty(uv_file file) {
+  DWORD result;
+  int r = GetConsoleMode((HANDLE)_get_osfhandle(file), &result);
+  return r ? 1 : 0;
+}

test/test-list.h

@@ -19,6 +19,7 @@
  * IN THE SOFTWARE.
  */
 
+TEST_DECLARE   (tty)
 TEST_DECLARE   (tcp_ping_pong)
 TEST_DECLARE   (tcp_ping_pong_v6)
 TEST_DECLARE   (pipe_ping_pong)
@@ -98,6 +99,8 @@ HELPER_DECLARE (pipe_echo_server)
 
 
 TASK_LIST_START
+  TEST_ENTRY  (tty)
+
   TEST_ENTRY  (tcp_ping_pong)
   TEST_HELPER (tcp_ping_pong, tcp4_echo_server)
 

test/test-tty.c

@@ -0,0 +1,33 @@
+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "uv.h"
+#include "task.h"
+
+TEST_IMPL(tty) {
+  uv_loop_t* loop = uv_default_loop();
+
+  ASSERT(uv_is_tty(0) == 1);
+
+  uv_run(loop);
+
+  return 0;
+}