Some fixes for big_red_button.py

sky/tools/big_red_button.py

 # Roll versions script:
 # /src/mojo/src/sky/apk/demo/AndroidManifest.xml version and string.
 # Update versions of pub packages:
 
 # Make a commit, upload it, land it.
 
 # Useful links:
 # http://stackoverflow.com/questions/14665518/api-to-automatically-upload-apk-to-google-play
 # https://developers.google.com/resources/api-libraries/documentation/androidpublisher/v2/python/latest/androidpublisher_v2.edits.apks.html
 
 import argparse
 import os
 import subprocess
+import sys
 
 DEFAULT_MOJO_ROOT = '/src/mojo/src'
 DEFAULT_SKY_SDK_ROOT = '/src/sky_sdk'
 DEFAULT_DEMO_SITE_ROOT = '/src/domokit.github.io'
 
 def run(cwd, args):
     print 'RUNNING:', ' '.join(args), 'IN:', cwd
     subprocess.check_call(args, cwd=cwd)
 
 
@@ skipping 12 matching lines @@
                         help='Path to sky_sdk',
                         default=DEFAULT_SKY_SDK_ROOT)
     parser.add_argument('--demo-site-root',
                         action='store',
                         type=str,
                         metavar='demo_site_root',
                         help='Path to domokit.github.io',
                         default=DEFAULT_DEMO_SITE_ROOT)
     args = parser.parse_args()
 
-    mojo_root = args.mojo_root
-    sky_sdk_root = args.sky_sdk_root
-    demo_site_root = args.demo_site_root
+    mojo_root = os.path.abspath(os.path.expanduser(args.mojo_root))
+    sky_sdk_root = os.path.abspath(os.path.expanduser(args.sky_sdk_root))
+    demo_site_root = os.path.abspath(os.path.expanduser(args.demo_site_root))
 
     # Derived paths:
     dart_sdk_root = os.path.join(mojo_root, 'third_party/dart-sdk/dart-sdk')
     pub_path = os.path.join(dart_sdk_root, 'bin/pub')
     packages_root = os.path.join(sky_sdk_root, 'packages')
 
     run(mojo_root, ['git', 'pull', '--rebase'])
     run(mojo_root, ['gclient', 'sync'])
     run(mojo_root, ['mojo/tools/mojob.py', 'gn', '--android', '--release'])
     run(mojo_root, ['mojo/tools/mojob.py', 'build', '--android', '--release'])
@@ skipping 17 matching lines @@
         if not os.path.isdir(package_path):
             continue
         run(package_path, [pub_path, 'publish', '--force'])
 
     run(sky_sdk_root, ['git', 'push'])
     run(demo_site_root, ['git', 'push'])
 
 
 if __name__ == '__main__':
     sys.exit(main())