mx.py 文件源码

def latest(self, vcdir, rev1, rev2, abortOnError=True):
        #hg log -r 'heads(ancestors(26030a079b91) and ancestors(6245feb71195))' --template '{node}\n'
        self.check_for_hg()
        try:
            revs = [rev1, rev2]
            revsetIntersectAncestors = ' or '.join(('ancestors({})'.format(rev) for rev in revs))
            revset = 'heads({})'.format(revsetIntersectAncestors)
            out = subprocess.check_output(['hg', '-R', vcdir, 'log', '-r', revset, '--template', '{node}\n'])
            parents = out.rstrip('\n').split('\n')
            if len(parents) != 1:
                if abortOnError:
                    abort('hg log returned {} possible latest (expected 1)'.format(len(parents)))
                return None
            return parents[0]
        except subprocess.CalledProcessError:
            if abortOnError:
                abort('latest failed')
            else:
                return None