wasibox-core 1.0.17

A collection of core utilities optimized for WASI
Documentation 
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

use clap::Parser;
use std::ffi::OsString;
use std::fs;

use crate::IoContext;

#[derive(Parser)]
#[command(name = "link", about = "Create a link to a file")]
struct Args {
    /// Target file
    #[arg(required = true)]
    target: String,

    /// Link name
    #[arg(required = true)]
    link: String,
}

pub fn execute<I, T>(args: I) -> Result<(), String>
where
    I: IntoIterator<Item = T>,
    T: Into<OsString> + Clone,
{
    execute_with_context(args, &mut IoContext::default())
}

pub fn execute_with_context<I, T>(args: I, _ctx: &mut IoContext) -> Result<(), String>
where
    I: IntoIterator<Item = T>,
    T: Into<OsString> + Clone,
{
    let args = Args::try_parse_from(args).map_err(|e| e.to_string())?;
    fs::hard_link(&args.target, &args.link).map_err(|e| {
        format!(
            "link: cannot create link {} to {}: {}",
            args.link, args.target, e
        )
    })?;
    Ok(())
}