Add option to enable zucchini
Change-Id: Id952826c9c5af912fba679af61f2a2e1645641dd
diff --git a/tools/releasetools/ota_utils.py b/tools/releasetools/ota_utils.py
index 6c5fc05..a4ec9e2 100644
--- a/tools/releasetools/ota_utils.py
+++ b/tools/releasetools/ota_utils.py
@@ -638,3 +638,38 @@
target_apex.source_version = source_apex_versions[name]
return target_apex_proto.SerializeToString()
+
+
+def IsZucchiniCompatible(source_file: str, target_file: str):
+ """Check whether zucchini versions in two builds are compatible
+
+ Args:
+ source_file: Path to source build's target_file.zip
+ target_file: Path to target build's target_file.zip
+
+ Returns:
+ bool true if and only if zucchini versions are compatible
+ """
+ if source_file is None or target_file is None:
+ return False
+ assert os.path.exists(source_file)
+ assert os.path.exists(target_file)
+
+ assert zipfile.is_zipfile(source_file) or os.path.isdir(source_file)
+ assert zipfile.is_zipfile(target_file) or os.path.isdir(target_file)
+ _ZUCCHINI_CONFIG_ENTRY_NAME = "META/zucchini_config.txt"
+
+ def ReadEntry(path, entry):
+ # Read an entry inside a .zip file or extracted dir of .zip file
+ if zipfile.is_zipfile(path):
+ with zipfile.ZipFile(path, "r", allowZip64=True) as zfp:
+ if entry in zfp.namelist():
+ return zfp.read(entry).decode()
+ else:
+ entry_path = os.path.join(entry, path)
+ if os.path.exists(entry_path):
+ with open(entry_path, "r") as fp:
+ return fp.read()
+ else:
+ return ""
+ return ReadEntry(source_file, _ZUCCHINI_CONFIG_ENTRY_NAME) == ReadEntry(target_file, _ZUCCHINI_CONFIG_ENTRY_NAME)