swh-revhash
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swh-revhash
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	#!/usr/bin/env python3

	# Use:
	# swh-revhash 'tree 4b825dc642cb6eb9a060e54bf8d69288fbee4904\nparent 22c0fa5195a53f2e733ec75a9b6e9d1624a8b771\nauthor seanius <seanius@3187e211-bb14-4c82-9596-0b59d67cd7f4> 1138341044 +0000\ncommitter seanius <seanius@3187e211-bb14-4c82-9596-0b59d67cd7f4> 1138341044 +0000\n\nmaking dir structure...\n' # noqa
	# output: 17a631d474f49bbebfdf3d885dcde470d7faafd7

	# To compare with git:
	# git-revhash 'tree 4b825dc642cb6eb9a060e54bf8d69288fbee4904\nparent 22c0fa5195a53f2e733ec75a9b6e9d1624a8b771\nauthor seanius <seanius@3187e211-bb14-4c82-9596-0b59d67cd7f4> 1138341044 +0000\ncommitter seanius <seanius@3187e211-bb14-4c82-9596-0b59d67cd7f4> 1138341044 +0000\n\nmaking dir structure...\n' # noqa
	# output: 17a631d474f49bbebfdf3d885dcde470d7faafd7


	import sys

	from swh.model import hashutil, identifiers


	def revhash(revision_raw):
	"""Compute the revision hash."""
	# HACK: string have somehow their \n expanded to \\n
	if b"\\n" in revision_raw:
	revision_raw = revision_raw.replace(b"\\n", b"\n")

	h = hashutil.hash_git_data(revision_raw, "commit")
	return identifiers.identifier_to_str(h)


	if __name__ == "__main__":
	revision_raw = sys.argv[1].encode("utf-8")
	print(revhash(revision_raw))