wasibox-core 1.0.17

A collection of core utilities optimized for WASI
Documentation 
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use crate::IoContext;
use clap::Parser;
use std::ffi::OsString;
use std::io::Write;

#[derive(Parser)]
#[command(name = "arch", about = "Print machine architecture")]
pub struct Args {}

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::try_parse_from(_args).map_err(|e| e.to_string())?;
    writeln!(ctx.stdout, "{}", get_arch()).map_err(|e| e.to_string())
}

pub fn get_arch() -> &'static str {
    #[cfg(target_os = "wasi")]
    {
        "wasm32"
    }
    #[cfg(all(not(target_os = "wasi"), target_arch = "x86_64"))]
    {
        "x86_64"
    }
    #[cfg(all(not(target_os = "wasi"), target_arch = "aarch64"))]
    {
        "aarch64"
    }
    #[cfg(all(
        not(target_os = "wasi"),
        not(target_arch = "x86_64"),
        not(target_arch = "aarch64")
    ))]
    {
        "unknown"
    }
}