1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
/*
* Copyright (c) 2006-2025, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author notes
* 2025-10-20 foxglove Rust file operation test.
* 2025-10-29 foxglove Updated to demonstrate new modular macro interface
*/
#![no_std]
extern crate alloc;
use rt_macros::msh_cmd_export;
use rt_rust::{fs, println};
use rt_rust::param::Param;
use em_component_log::{info, error};
#[msh_cmd_export(name = "rust_file_demo", desc = "Rust example app.")]
fn main(_param: Param) {
println!("[rust_file_test] start");
let mut file = match fs::OpenOptions::new()
.read(true)
.write(true)
.create(true)
.append(false)
.truncate(true)
.open("test.txt")
{
Ok(f) => {
info!("open test.txt ok");
f
}
Err(e) => {
error!("open error: {:?}", e);
return;
}
};
if let Err(e) = file.write_all("Hello from FS wrapper!\n") {
error!("write_all error: {:?}", e);
return;
}
info!("write_all done");
if let Err(e) = file.flush() {
error!("flush error: {:?}", e);
} else {
info!("flush ok");
}
match file.read_to_string() {
Ok(s) => info!("read_back: {}", s),
Err(e) => error!("read_to_string error: {:?}", e),
}
if let Err(e) = file.set_len(5) {
error!("truncate error: {:?}", e);
} else {
info!("truncate to 5 ok");
}
if let Err(e) = file.close() {
error!("close error: {:?}", e);
} else {
info!("close ok");
}
info!("[rust_file_test] end");
}
|
