GITC: Add repo sync support.

Add repo sync support for GITC checkouts. If the user is in the
GITC client directory they can still pull the sources as normal
if they pass in the --force-gitc argument. Otherwise the user
should call repo sync in the GITC view to update the user's
remote view. (This works because .repo in the GITC view will
link to .repo in the client config directory.)

Part of the support for this change is the refactoring of GITC
related code into gitc_utils.py.

Change-Id: I2636aaa50b450b6f091309db8dd0e8f4dbdad579

1 files changed, 29 insertions, 0 deletions

diff --git a/subcmds/sync.py b/subcmds/sync.py
index 43d450be..652a0c0d 100644
--- a/subcmds/sync.py
+++ b/subcmds/sync.py
@@ -58,6 +58,7 @@ except ImportError:
 
 from git_command import GIT, git_require
 from git_refs import R_HEADS, HEAD
+import gitc_utils
 from project import Project
 from project import RemoteSpec
 from command import Command, MirrorSafeCommand
@@ -184,6 +185,9 @@ later is required to fix a server side protocol bug.
                  help="overwrite an existing git directory if it needs to "
                       "point to a different object directory. WARNING: this "
                       "may cause loss of data")
+    p.add_option('--force-gitc',
+                 dest='force_gitc', action='store_true',
+                 help="actually sync sources in the gitc client directory.")
     p.add_option('-l', '--local-only',
                  dest='local_only', action='store_true',
                  help="only update working tree, don't fetch")
@@ -526,6 +530,25 @@ later is required to fix a server side protocol bug.
         print('error: both -u and -p must be given', file=sys.stderr)
         sys.exit(1)
 
+    cwd = os.getcwd()
+    if cwd.startswith(gitc_utils.GITC_MANIFEST_DIR) and not opt.force_gitc:
+      print('WARNING this will pull all the sources like a normal repo sync.\n'
+            '\nIf you want to update your GITC Client View please rerun this '
+            'command in \n%s%s.\nOr if you actually want to pull the sources, '
+            'rerun with --force-gitc.' %
+            (gitc_utils.GITC_FS_ROOT_DIR,
+             cwd.split(gitc_utils.GITC_MANIFEST_DIR)[1]))
+      sys.exit(1)
+
+    self._gitc_sync = False
+    if cwd.startswith(gitc_utils.GITC_FS_ROOT_DIR):
+      self._gitc_sync = True
+      self._client_name = cwd.split(gitc_utils.GITC_FS_ROOT_DIR)[1].split(
+          '/')[0]
+      self._client_dir = os.path.join(gitc_utils.GITC_MANIFEST_DIR,
+                                      self._client_name)
+      print('Updating GITC client: %s' % self._client_name)
+
     if opt.manifest_name:
       self.manifest.Override(opt.manifest_name)
 
@@ -642,6 +665,12 @@ later is required to fix a server side protocol bug.
     if opt.repo_upgraded:
       _PostRepoUpgrade(self.manifest, quiet=opt.quiet)
 
+    if self._gitc_sync:
+      gitc_utils.generate_gitc_manifest(self._client_dir, self.manifest)
+      print('GITC client successfully synced.')
+      return
+
+
     if not opt.local_only:
       mp.Sync_NetworkHalf(quiet=opt.quiet,
                           current_branch_only=opt.current_branch_only,