mirror of
https://github.com/google/pebble.git
synced 2025-03-18 01:51:22 +00:00
55 lines
1.8 KiB
Python
55 lines
1.8 KiB
Python
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#!/usr/bin/env python
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# Copyright 2024 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import zipfile
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import argparse
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import json
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import base64
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import os
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CHUNK_SIZE = (1024 * 3) / 4
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def chunk_generator(stream):
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while True:
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chunk = stream.read(CHUNK_SIZE)
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yield chunk
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if (len(chunk) != CHUNK_SIZE):
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break
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def dump_base64(data, outpath):
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with open(outpath, 'w') as outfile:
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for chunk in chunk_generator(data):
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outfile.write(base64.b64encode(chunk))
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outfile.write('\n')
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if __name__ == '__main__':
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parser = argparse.ArgumentParser(description='Unpack a Pebble bundle\'s binary payload into Base64 format for serial loading')
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parser.add_argument('bundle', help='pbz bundle to unpack')
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args = parser.parse_args()
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if args.bundle:
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bundlename = os.path.basename(args.bundle).rsplit('.pbz', 1)[0]
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with zipfile.ZipFile(args.bundle, 'r') as pbz:
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manifest = json.load(pbz.open('manifest.json'))
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firmwarefile = manifest['firmware']['name']
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if 'firmware' in manifest:
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dump_base64(pbz.open(manifest['firmware']['name']), bundlename + '.firmware.base64')
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if 'resources' in manifest:
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dump_base64(pbz.open(manifest['resources']['name']), bundlename + '.resources.base64')
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else:
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parser.print_help()
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sys.exit(1)
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