opendal/services/memory/
lister.rs

1// Licensed to the Apache Software Foundation (ASF) under one
2// or more contributor license agreements.  See the NOTICE file
3// distributed with this work for additional information
4// regarding copyright ownership.  The ASF licenses this file
5// to you under the Apache License, Version 2.0 (the
6// "License"); you may not use this file except in compliance
7// with the License.  You may obtain a copy of the License at
8//
9//   http://www.apache.org/licenses/LICENSE-2.0
10//
11// Unless required by applicable law or agreed to in writing,
12// software distributed under the License is distributed on an
13// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
14// KIND, either express or implied.  See the License for the
15// specific language governing permissions and limitations
16// under the License.
17
18use std::vec::IntoIter;
19
20use crate::raw::oio;
21use crate::raw::*;
22use crate::*;
23
24pub struct MemoryLister {
25    root: String,
26    keys: IntoIter<String>,
27}
28
29impl MemoryLister {
30    pub fn new(root: &str, keys: Vec<String>) -> Self {
31        Self {
32            root: root.to_string(),
33            keys: keys.into_iter(),
34        }
35    }
36}
37
38impl oio::List for MemoryLister {
39    async fn next(&mut self) -> Result<Option<oio::Entry>> {
40        match self.keys.next() {
41            Some(key) => {
42                let mode = if key.ends_with('/') {
43                    EntryMode::DIR
44                } else {
45                    EntryMode::FILE
46                };
47                let mut path = build_rel_path(&self.root, &key);
48                if path.is_empty() {
49                    path = "/".to_string();
50                }
51                Ok(Some(oio::Entry::new(&path, Metadata::new(mode))))
52            }
53            None => Ok(None),
54        }
55    }
56}
opendal/services/memory/lister.rs

opendal/services/memory/
lister.rs
