2019-01-02 23:46:01 -05:00
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#!/usr/bin/env python
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"""Calculate the sha256 digest of a given file."""
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import hashlib, os, subprocess, sys
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subprocess.check_call([
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'redo-ifchange',
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sys.argv[2],
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2019-05-15 15:17:29 -07:00
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], close_fds=False)
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2019-01-02 23:46:01 -05:00
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h = hashlib.sha256()
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2019-05-15 16:53:49 -07:00
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f = open(sys.argv[2], 'rb')
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2019-01-02 23:46:01 -05:00
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while 1:
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b = f.read(65536)
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if not b: break
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h.update(b)
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open(sys.argv[3], 'w').write(h.hexdigest() + '\n')
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