superproject: pass groups to ToXml method.

Added the following methods to XmlManifest class.
+ GetDefaultGroupsStr() - return 'default,platform-' + platform.system().lower()
+ GetGroupsStr() - Same as gitc_utils.py's _manifest_groups func.

+ Replaced gitc_utils.py's_manifest_groups calls with GetGroupsStr.
+ Used the above methods to get groups in command.py::GetProjects
  and part of init.py.

TODO: clean up these funcs to take structured group data more instead
      of passing strings around everywhere that need parsing.

Tested the code with the following commands.

$ ./run_tests -v

Tested the sync code by using repo_dev alias and pointing to this CL
and verified prebuilts/fullsdk-linux directory has all the folders.

Tested repo init and repo sync with --use-superproject and without
--use-superproject argument.

$ repo_dev init -u sso://android.git.corp.google.com/platform/manifest -b androidx-main  --partial-clone --clone-filter=blob:limit=10M --repo-rev=main --use-superproject

$ repo_dev sync -c -j32

Bug: [google internal] b/181804931
Bug: https://crbug.com/gerrit/13707
Change-Id: Ia98585cbfa3a1449710655af55d56241794242b6
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/299422
Reviewed-by: Jonathan Nieder <jrn@google.com>
Reviewed-by: Mike Frysinger <vapier@google.com>
Tested-by: Raman Tenneti <rtenneti@google.com>

command.py

@@ -178,9 +178,7 @@ class Command(object):
     mp = manifest.manifestProject
 
     if not groups:
-      groups = mp.config.GetString('manifest.groups')
+      groups = manifest.GetGroupsStr()
-    if not groups:
-      groups = 'default,platform-' + platform.system().lower()
     groups = [x for x in re.split(r'[,\s]+', groups) if x]
 
     if not args:

git_superproject.py

@@ -235,7 +235,7 @@ class Superproject(object):
             self._superproject_path,
             file=sys.stderr)
       return None
-    manifest_str = self._manifest.ToXml().toxml()
+    manifest_str = self._manifest.ToXml(groups=self._manifest.GetGroupsStr()).toxml()
     manifest_path = self._manifest_path
     try:
       with open(manifest_path, 'w', encoding='utf-8') as fp:

gitc_utils.py

@@ -77,22 +77,6 @@ def _set_project_revisions(projects):
       project.revisionExpr = revisionExpr
 
 
-def _manifest_groups(manifest):
-  """Returns the manifest group string that should be synced
-
-  This is the same logic used by Command.GetProjects(), which is used during
-  repo sync
-
-  Args:
-    manifest: The XmlManifest object
-  """
-  mp = manifest.manifestProject
-  groups = mp.config.GetString('manifest.groups')
-  if not groups:
-    groups = 'default,platform-' + platform.system().lower()
-  return groups
-
-
 def generate_gitc_manifest(gitc_manifest, manifest, paths=None):
   """Generate a manifest for shafsd to use for this GITC client.
 
@@ -107,7 +91,7 @@ def generate_gitc_manifest(gitc_manifest, manifest, paths=None):
   if paths is None:
     paths = list(manifest.paths.keys())
 
-  groups = [x for x in re.split(r'[,\s]+', _manifest_groups(manifest)) if x]
+  groups = [x for x in re.split(r'[,\s]+', manifest.GetGroupsStr()) if x]
 
   # Convert the paths to projects, and filter them to the matched groups.
   projects = [manifest.paths[p] for p in paths]
@@ -166,7 +150,7 @@ def save_manifest(manifest, client_dir=None):
   else:
     manifest_file = os.path.join(client_dir, '.manifest')
   with open(manifest_file, 'w') as f:
-    manifest.Save(f, groups=_manifest_groups(manifest))
+    manifest.Save(f, groups=manifest.GetGroupsStr())
   # TODO(sbasi/jorg): Come up with a solution to remove the sleep below.
   # Give the GITC filesystem time to register the manifest changes.
   time.sleep(3)

manifest_xml.py

@@ -14,6 +14,7 @@
 
 import itertools
 import os
+import platform
 import re
 import sys
 import xml.dom.minidom
@@ -604,6 +605,17 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
   def HasSubmodules(self):
     return self.manifestProject.config.GetBoolean('repo.submodules')
 
+  def GetDefaultGroupsStr(self):
+    """Returns the default group string for the platform."""
+    return 'default,platform-' + platform.system().lower()
+
+  def GetGroupsStr(self):
+    """Returns the manifest group string that should be synced."""
+    groups = self.manifestProject.config.GetString('manifest.groups')
+    if not groups:
+      groups = self.GetDefaultGroupsStr()
+    return groups
+
   def _Unload(self):
     self._loaded = False
     self._projects = {}

subcmds/init.py

@@ -267,7 +267,7 @@ to update the working directory files.
 
     groups = [x for x in groups if x]
     groupstr = ','.join(groups)
-    if opt.platform == 'auto' and groupstr == 'default,platform-' + platform.system().lower():
+    if opt.platform == 'auto' and groupstr == self.manifest.GetDefaultGroupsStr():
       groupstr = None
     m.config.SetString('manifest.groups', groupstr)
 

tests/test_git_superproject.py

@@ -15,6 +15,7 @@
 """Unittests for the git_superproject.py module."""
 
 import os
+import platform
 import tempfile
 import unittest
 from unittest import mock
@@ -34,6 +35,7 @@ class SuperprojectTestCase(unittest.TestCase):
     self.manifest_file = os.path.join(
         self.repodir, manifest_xml.MANIFEST_FILE_NAME)
     os.mkdir(self.repodir)
+    self.platform = platform.system().lower()
 
     # The manifest parsing really wants a git repo currently.
     gitdir = os.path.join(self.repodir, 'manifests.git')
@@ -48,8 +50,8 @@ class SuperprojectTestCase(unittest.TestCase):
   <remote name="default-remote" fetch="http://localhost" />
   <default remote="default-remote" revision="refs/heads/main" />
   <superproject name="superproject"/>
-  <project path="art" name="platform/art" />
+  <project path="art" name="platform/art" groups="notdefault,platform-""" + self.platform + """
-</manifest>
+  " /></manifest>
 """)
     self._superproject = git_superproject.Superproject(manifest, self.repodir)
 
@@ -142,7 +144,8 @@ class SuperprojectTestCase(unittest.TestCase):
         '<?xml version="1.0" ?><manifest>' +
         '<remote name="default-remote" fetch="http://localhost"/>' +
         '<default remote="default-remote" revision="refs/heads/main"/>' +
-        '<project name="platform/art" path="art" revision="ABCDEF"/>' +
+        '<project name="platform/art" path="art" revision="ABCDEF" ' +
+        'groups="notdefault,platform-' + self.platform + '"/>' +
         '<superproject name="superproject"/>' +
         '</manifest>')
 
@@ -169,7 +172,8 @@ class SuperprojectTestCase(unittest.TestCase):
               '<remote name="default-remote" fetch="http://localhost"/>' +
               '<default remote="default-remote" revision="refs/heads/main"/>' +
               '<project name="platform/art" path="art" ' +
-              'revision="2c2724cb36cd5a9cec6c852c681efc3b7c6b86ea"/>' +
+              'revision="2c2724cb36cd5a9cec6c852c681efc3b7c6b86ea" ' +
+              'groups="notdefault,platform-' + self.platform + '"/>' +
               '<superproject name="superproject"/>' +
               '</manifest>')
 

tests/test_manifest_xml.py

@@ -15,6 +15,7 @@
 """Unittests for the manifest_xml.py module."""
 
 import os
+import platform
 import shutil
 import tempfile
 import unittest
@@ -377,6 +378,11 @@ class ProjectElementTests(ManifestParseTestCase):
     self.assertCountEqual(
         result['extras'],
         ['g1', 'g2', 'g1', 'name:extras', 'all', 'path:path'])
+    groupstr = 'default,platform-' + platform.system().lower()
+    self.assertEqual(groupstr, manifest.GetGroupsStr())
+    groupstr = 'g1,g2,g1'
+    manifest.manifestProject.config.SetString('manifest.groups', groupstr)
+    self.assertEqual(groupstr, manifest.GetGroupsStr())
 
   def test_set_revision_id(self):
     """Check setting of project's revisionId."""