37 	def __init__(self, repository, filename, revision, checksum):  argument
38 		self.repository	= repository
44 		return hash((self.repository, self.filename, self.revision, self.checksum))
47 …return (self.repository, self.filename, self.revision, self.checksum) == (other.repository, other.…
62 		return self.repository
73 def makeSourceUrl (repository, revision, filename):  argument
74 	return "%s/%s/%s" % (repository, revision, filename)
76 def checkoutGit (repository, revision, fullDstPath):  argument
78 		execute(["git", "clone", "--no-checkout", repository, fullDstPath])
82 		execute(["git", "fetch", repository, "+refs/heads/*:refs/remotes/origin/*"])
87 def checkoutFile (repository, revision, filename, cacheDir):  argument
89 		req		= urllib2.urlopen(makeSourceUrl(repository, revision, filename))
94 		checkoutGit(repository, revision, fullDstPath)
103 def fetchFile (dstPath, repository, revision, filename, checksum, cacheDir):  argument
112 	print "Fetching %s/%s@%s" % (repository, filename, revision)
113 	data		= checkoutFile(repository, revision, filename, cacheDir)