Merge pull request #190 from bschoenmaeckers/wasi

Add wasi support

Author: astraw

.github/workflows/rust.yml

@@ -108,6 +108,31 @@ jobs:
           tool: wasm-pack
       - run: wasm-pack test --node
 
+  test-wasi:
+    strategy:
+      fail-fast: false
+      matrix:
+        toolchain:
+          - stable
+          - nightly
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
+        with:
+          persist-credentials: false
+      - name: Install Rust
+        run: |
+          rustup toolchain install ${{ matrix.toolchain }} --profile minimal --no-self-update --target wasm32-wasip1
+          rustup default ${{ matrix.toolchain }}
+      - env:
+          CARGO_BUILD_TARGET: wasm32-wasip1
+        run: cargo build --release --examples
+      - name: Install wasmtime
+        uses: bytecodealliance/actions/wasmtime/setup@6aecabac1eb1dcf7ed94ba9471974415ee2ebef2 # v1
+      - name: Run example using wasmtime
+        run: wasmtime ./target/wasm32-wasip1/release/examples/get_timezone.wasm
+
   test-emscripten:
     strategy:
       fail-fast: false

src/lib.rs

@@ -64,6 +64,10 @@ mod ffi_utils;
 #[cfg_attr(target_os = "aix", path = "tz_aix.rs")]
 #[cfg_attr(target_os = "android", path = "tz_android.rs")]
 #[cfg_attr(target_os = "haiku", path = "tz_haiku.rs")]
+#[cfg_attr(
+    all(target_arch = "wasm32", target_os = "wasi"),
+    path = "tz_wasm32_wasi.rs"
+)]
 mod platform;
 
 /// Error types

src/platform.rs

@@ -5,5 +5,5 @@ pub fn get_timezone_inner() -> Result<String, crate::GetTimezoneError> {
 #[cfg(not(feature = "fallback"))]
 compile_error!(
     "iana-time-zone is currently implemented for Linux, Window, MacOS, FreeBSD, NetBSD, \
-    OpenBSD, Dragonfly, WebAssembly (browser), emscripten, iOS, Illumos, Android, AIX, Solaris and Haiku.",
+    OpenBSD, Dragonfly, WebAssembly (browser), wasip, emscripten, iOS, Illumos, Android, AIX, Solaris and Haiku.",
 );

src/tz_wasm32_wasi.rs

@@ -0,0 +1,3 @@
+pub(crate) fn get_timezone_inner() -> Result<String, crate::GetTimezoneError> {
+    std::env::var("TZ").or_else(|_| Ok("Etc/UTC".to_owned()))
+}