Import of the watch repository from Pebble

tools/pbz2base64.py

@@ -0,0 +1,54 @@
+#!/usr/bin/env python
+# Copyright 2024 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+import zipfile
+import argparse
+import json
+import base64
+import os
+
+CHUNK_SIZE = (1024 * 3) / 4
+
+def chunk_generator(stream):
+  while True:
+    chunk = stream.read(CHUNK_SIZE)
+    yield chunk
+    if (len(chunk) != CHUNK_SIZE):
+      break
+
+def dump_base64(data, outpath):
+  with open(outpath, 'w') as outfile:
+    for chunk in chunk_generator(data):
+      outfile.write(base64.b64encode(chunk))
+      outfile.write('\n')
+
+if __name__ == '__main__':
+  parser = argparse.ArgumentParser(description='Unpack a Pebble bundle\'s binary payload into Base64 format for serial loading')
+  parser.add_argument('bundle', help='pbz bundle to unpack')
+  args = parser.parse_args()
+
+  if args.bundle:
+    bundlename = os.path.basename(args.bundle).rsplit('.pbz', 1)[0]
+    with zipfile.ZipFile(args.bundle, 'r') as pbz:
+      manifest = json.load(pbz.open('manifest.json'))
+      firmwarefile = manifest['firmware']['name']
+      if 'firmware' in manifest:
+        dump_base64(pbz.open(manifest['firmware']['name']), bundlename + '.firmware.base64')
+      if 'resources' in manifest:
+        dump_base64(pbz.open(manifest['resources']['name']), bundlename + '.resources.base64')
+  else:
+    parser.print_help()
+    sys.exit(1)