From 2f0ca38423d98b17acc765b6876d9d3769414064 Mon Sep 17 00:00:00 2001
From: skyostil <skyostil@chromium.org>
Date: Fri, 17 Apr 2015 11:12:36 -0700
Subject: [PATCH] cr: Add 'gn' command

The gn command lets you invoke gn without having to type the out directory manually, e.g.

$ cr gn args

instead of

$ gn args out_linux/Debug

Review URL: https://codereview.chromium.org/1092783006

Cr-Commit-Position: refs/heads/master@{#325678}
---
 tools/cr/cr/commands/gn.py | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 tools/cr/cr/commands/gn.py

diff --git a/tools/cr/cr/commands/gn.py b/tools/cr/cr/commands/gn.py
new file mode 100644
index 000000000000..70d2d06eb185
--- /dev/null
+++ b/tools/cr/cr/commands/gn.py
@@ -0,0 +1,39 @@
+# Copyright 2015 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""A module for the gn command."""
+
+import os
+
+import cr
+
+
+class GnCommand(cr.Command):
+  """The implementation of the gn command.
+
+  The gn command is meant for running the gn tool without having to manually
+  specify an out directory.
+  """
+
+  def __init__(self):
+    super(GnCommand, self).__init__()
+    self.help = 'Run gn with the currently selected out directory'
+    self.description = ("""
+        Runs the gn command with the currently selected out directory as the
+        second argument.
+        """)
+
+  def AddArguments(self, subparsers):
+    parser = super(GnCommand, self).AddArguments(subparsers)
+    self.ConsumeArgs(parser, 'gn')
+    return parser
+
+  def Run(self):
+    out_path = os.path.join(cr.context['CR_SRC'],
+                            cr.context['CR_OUT_FULL'])
+    args = cr.context.remains
+    if args:
+      cr.Host.Execute('gn', args[0], out_path, *args[1:])
+    else:
+      cr.Host.Execute('gn')
-- 
2.11.4.GIT