From 286e316ac5d47a7dbf4cfb5063de8a67c4025432 Mon Sep 17 00:00:00 2001
From: Hatter Jiang <jht5945@gmail.com>
Date: Sat, 27 Aug 2022 01:13:48 +0800
Subject: [PATCH] feat: add wasi01

---
 wasi01/README.md    |  9 +++++++++
 wasi01/build.zig    | 34 ++++++++++++++++++++++++++++++++++
 wasi01/justfile     |  6 ++++++
 wasi01/src/main.zig | 13 +++++++++++++
 4 files changed, 62 insertions(+)
 create mode 100644 wasi01/README.md
 create mode 100644 wasi01/build.zig
 create mode 100644 wasi01/justfile
 create mode 100644 wasi01/src/main.zig

diff --git a/wasi01/README.md b/wasi01/README.md
new file mode 100644
index 0000000..e7cec13
--- /dev/null
+++ b/wasi01/README.md
@@ -0,0 +1,9 @@
+
+```console
+$ wasmtime main.wasm hello world
+0: main.wasm
+1: hello
+2: world
+```
+
+
diff --git a/wasi01/build.zig b/wasi01/build.zig
new file mode 100644
index 0000000..21a2892
--- /dev/null
+++ b/wasi01/build.zig
@@ -0,0 +1,34 @@
+const std = @import("std");
+
+pub fn build(b: *std.build.Builder) void {
+    // Standard target options allows the person running `zig build` to choose
+    // what target to build for. Here we do not override the defaults, which
+    // means any target is allowed, and the default is native. Other options
+    // for restricting supported target set are available.
+    const target = b.standardTargetOptions(.{});
+
+    // Standard release options allow the person running `zig build` to select
+    // between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall.
+    const mode = b.standardReleaseOptions();
+
+    const exe = b.addExecutable("wasi01", "src/main.zig");
+    exe.setTarget(target);
+    exe.setBuildMode(mode);
+    exe.install();
+
+    const run_cmd = exe.run();
+    run_cmd.step.dependOn(b.getInstallStep());
+    if (b.args) |args| {
+        run_cmd.addArgs(args);
+    }
+
+    const run_step = b.step("run", "Run the app");
+    run_step.dependOn(&run_cmd.step);
+
+    const exe_tests = b.addTest("src/main.zig");
+    exe_tests.setTarget(target);
+    exe_tests.setBuildMode(mode);
+
+    const test_step = b.step("test", "Run unit tests");
+    test_step.dependOn(&exe_tests.step);
+}
diff --git a/wasi01/justfile b/wasi01/justfile
new file mode 100644
index 0000000..d22bd4e
--- /dev/null
+++ b/wasi01/justfile
@@ -0,0 +1,6 @@
+_:
+  @just --list
+
+build:
+  zig build-exe src/main.zig -target wasm32-wasi
+
diff --git a/wasi01/src/main.zig b/wasi01/src/main.zig
new file mode 100644
index 0000000..28a4754
--- /dev/null
+++ b/wasi01/src/main.zig
@@ -0,0 +1,13 @@
+const std = @import("std");
+
+pub fn main() !void {
+    var general_purpose_allocator = std.heap.GeneralPurposeAllocator(.{}){};
+    const gpa = general_purpose_allocator.allocator();
+    const args = try std.process.argsAlloc(gpa);
+    defer std.process.argsFree(gpa, args);
+
+    for (args) |arg, i| {
+        std.debug.print("{}: {s}\n", .{ i, arg });
+    }
+}
+