diff_tree.py 文件源码

def _join_modifies(self):
        if self._rewrite_threshold is None:
            return

        modifies = {}
        delete_map = dict((d.old.path, d) for d in self._deletes)
        for add in self._adds:
            path = add.new.path
            delete = delete_map.get(path)
            if (delete is not None and
                stat.S_IFMT(delete.old.mode) == stat.S_IFMT(add.new.mode)):
                modifies[path] = TreeChange(CHANGE_MODIFY, delete.old, add.new)

        self._adds = [a for a in self._adds if a.new.path not in modifies]
        self._deletes = [a for a in self._deletes if a.new.path not in
                         modifies]
        self._changes += modifies.values()