System object ‣ wasi - chung-leong/zigar GitHub Wiki

JavaScript | PHP

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An object that implements the WebAssembly System Interface (WASI) that will provide baseline support for system calls.

Usage

const std = @import("std");
var threaded_io = std.Io.Threaded.init_single_threaded;

const io = threaded_io.io();

pub fn print(path: []const u8) !void {
    var file = try std.Io.Dir.openFileAbsolute(io, path, .{});
    defer file.close(io);
    const stdout = std.Io.File.stdout();
    var buffer: [128]u8 = undefined;
    while (true) {
        const read = file.readStreaming(io, &[1][]u8{&buffer}) catch break;
        if (read == 0) break;
        _ = try stdout.writeStreaming(io, "", &[1][]u8{buffer[0..read]}, 1);
    }
}

import { fileURLToPath } from 'node:url';
import { WASI } from 'node:wasi';
import { __zigar, print } from './system-object-wasi-example-1.zig';
const { set } = __zigar;

set('wasi', new WASI({
  version: 'preview1',
  args: [],
  env: {},
  preopens: { '/': '/' },
}));

const path = fileURLToPath(import.meta.url);
print(path);

import { fileURLToPath } from 'node:url';
import { WASI } from 'node:wasi';
import { __zigar, print } from './system-object-wasi-example-1.zig';
const { set } = __zigar;

set('wasi', new WASI({
  version: 'preview1',
  args: [],
  env: {},
  preopens: { '/': '/' },
}));

const path = fileURLToPath(import.meta.url);
print(path);

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System objects