32 	def __init__(self, filename, revision, checksum):  argument
35 		self.checksum	= checksum
38 		return hash((self.filename, self.revision, self.checksum))
41 …return (self.filename, self.revision, self.checksum) == (other.filename, other.revision, other.che…
50 		return self.checksum
66 def fetchFile (dstPath, url, checksum):  argument
79 	if checksum != gotChecksum:
80 		raise Exception("Checksum mismatch, exepected %s, got %s" % (checksum, gotChecksum))
84 def checkFile (filename, checksum):  argument
92 		return computeChecksum(readFile(filename)) == checksum
107 	if not checkFile(cachePath, source.checksum):