[NaCl SDK] Refactor sdk_update*.

native_client_sdk/src/build_tools/sdk_tools/commands/list.py

Index: native_client_sdk/src/build_tools/sdk_tools/commands/list.py
diff --git a/native_client_sdk/src/build_tools/sdk_tools/commands/list.py b/native_client_sdk/src/build_tools/sdk_tools/commands/list.py
new file mode 100644
index 0000000000000000000000000000000000000000..3be365f8606ec25b1b691c3385219e6cdab90a5a
--- /dev/null
+++ b/native_client_sdk/src/build_tools/sdk_tools/commands/list.py
@@ -0,0 +1,50 @@
+# Copyright (c) 2012 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.
+
+__all__ = ['List']
+
+def List(remote_manifest, local_manifest, display_revisions):
+  any_bundles_need_update = False
+  print 'Bundles:'
+  print ' I: installed\n *: update available\n'
+  for bundle in remote_manifest.GetBundles():
+    local_bundle = local_manifest.GetBundle(bundle.name)
+    needs_update = local_bundle and local_manifest.BundleNeedsUpdate(bundle)
+    if needs_update:
+      any_bundles_need_update = True
+
+    _PrintBundle(local_bundle, bundle, needs_update, display_revisions)
+
+  if not any_bundles_need_update:
+    print '\nAll installed bundles are up-to-date.'
+
+  local_only_bundles = set([b.name for b in local_manifest.GetBundles()])
+  local_only_bundles -= set([b.name for b in remote_manifest.GetBundles()])
+  if local_only_bundles:
+    print '\nBundles installed locally that are not available remotely:'
+    for bundle_name in local_only_bundles:
+      local_bundle = local_manifest.GetBundle(bundle_name)
+      _PrintBundle(local_bundle, None, False, display_revisions)
+
+
+def _PrintBundle(local_bundle, bundle, needs_update, display_revisions):
+  installed = local_bundle is not None
+  # If bundle is None, there is no longer a remote bundle with this name.
+  if bundle is None:
+    bundle = local_bundle
+
+  if display_revisions:
+    if needs_update:
+      revision = ' (r%s -> r%s)' % (local_bundle.revision, bundle.revision)
+    else:
+      revision = ' (r%s)' % (bundle.revision,)
+  else:
+    revision = ''
+
+  print ('  %s%s %s (%s)%s' % (
+    'I' if installed else ' ',
+    '*' if needs_update else ' ',
+    bundle.name,
+    bundle.stability,
+    revision))