gistfile1.py

class BuildResultKey(object):
    def __init__(self, project_key, plan_key, job_key, build_number=None):
        self.project_key = project_key
        self.plan_key = plan_key
        self.job_key = job_key
        self.build_number = build_number

    def __str__(self):
        return "%s-%s-%s" % (self.project_key, self.plan_key, self.job_key)

    @classmethod
    def from_string(cls, strng):
        """Instantiates a build key object from a string"""
        pattern = r"([A-Z0-9]+)-([A-Z0-9]+)-([A-Z0-9]+)-*(\d+)*"
        m = re.match(pattern, strng)
        if m is not None:
            return cls(m.group(1), m.group(2), m.group(3), m.group(4))
        else:
            raise ValueError("Cannot parse build key from %s" % strng)

    @classmethod
    def from_directory(cls, directory):
        """Instantiates a build key from a directory"""
        if os.path.isdir(directory) is True:
            newcls = cls.from_string(os.path.basename(directory))
            newcls.build_number = get_build_number_from_file(
                    os.path.join(directory, "build-number.txt"))
            return newcls
        else:
            raise ValueError("%s is not a directory" % directory)