g3/g3proxy/utils/ftp/src/cmd_list.rs
2023-03-09 17:55:45 +08:00

81 lines
2.2 KiB
Rust

/*
* Copyright 2023 ByteDance and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
use async_trait::async_trait;
use clap::{Arg, ArgMatches, Command};
use tokio::io::{AsyncRead, AsyncWrite, AsyncWriteExt, Stdout};
use g3_ftp_client::{FtpClient, FtpConnectionProvider, FtpLineDataReceiver};
pub(super) const COMMAND: &str = "list";
const COMMAND_ARG_PATH: &str = "path";
pub(super) fn command() -> Command {
Command::new(COMMAND).about("List path").arg(
Arg::new(COMMAND_ARG_PATH)
.value_name("FILE PATH")
.num_args(1),
)
}
pub(super) async fn run<CP, S, E>(
client: &mut FtpClient<CP, S, E, ()>,
args: &ArgMatches,
) -> anyhow::Result<()>
where
CP: FtpConnectionProvider<S, E, ()>,
S: AsyncRead + AsyncWrite + Unpin,
E: std::error::Error,
{
let path = args
.get_one::<String>(COMMAND_ARG_PATH)
.map(|s| s.as_str())
.unwrap_or_default();
let mut line_receiver = StdioLineReceiver::default();
let data_stream = client.list_directory_detailed_start(path, &()).await?;
client
.list_directory_detailed_receive(data_stream, &mut line_receiver)
.await?;
Ok(())
}
pub struct StdioLineReceiver {
io: Stdout,
has_error: bool,
}
impl Default for StdioLineReceiver {
fn default() -> Self {
StdioLineReceiver {
io: tokio::io::stdout(),
has_error: false,
}
}
}
#[async_trait]
impl FtpLineDataReceiver for StdioLineReceiver {
async fn recv_line(&mut self, line: &str) {
self.has_error = self.io.write_all(line.as_bytes()).await.is_err();
}
#[inline]
fn should_return_early(&self) -> bool {
self.has_error
}
}