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import hashlib |
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ZONEFILE_METADATA_TEMPLATE = """{{ |
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"metadata_version": 2.0, |
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"releases_url": [], |
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"tzdata_file": "{tzdata_file}", |
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"tzdata_file_sha512": "{tzdata_sha512}", |
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"tzversion": "{tzdata_version}", |
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"zonegroups": [ |
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"africa", |
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"antarctica", |
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"asia", |
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"australasia", |
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"europe", |
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"northamerica", |
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"southamerica", |
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"etcetera", |
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"factory", |
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"backzone", |
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"backward" |
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] |
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}} |
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""" |
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def calculate_sha512(fpath): |
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with open(fpath, 'rb') as f: |
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sha_hasher = hashlib.sha512() |
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sha_hasher.update(f.read()) |
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return sha_hasher.hexdigest() |
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if __name__ == "__main__": |
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import argparse |
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parser = argparse.ArgumentParser() |
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parser.add_argument('tzdata', metavar='TZDATA', |
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help='The name tzdata tarball file') |
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parser.add_argument('version', metavar='VERSION', |
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help='The version of the tzdata tarball') |
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parser.add_argument('out', metavar='OUT', nargs='?', |
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default='zonefile_metadata.json', |
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help='Where to write the file') |
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args = parser.parse_args() |
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tzdata = args.tzdata |
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version = args.version |
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sha512 = calculate_sha512(tzdata) |
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metadata_file_text = ZONEFILE_METADATA_TEMPLATE.format( |
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tzdata_file=tzdata, |
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tzdata_version=version, |
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tzdata_sha512=sha512, |
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) |
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with open(args.out, 'w') as f: |
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f.write(metadata_file_text) |
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