Replace xz2 dependency by liblzma enabling WebAssembly WASI targets

.github/workflows/wasi.yml

@@ -0,0 +1,32 @@
+name: wasi
+
+env:
+  RUST_BACKTRACE: 1
+
+jobs:
+  build:
+    name: Build for wasm32-wasip1-threads
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: actions-rust-lang/setup-rust-toolchain@v1
+      with:
+        toolchain: nightly
+        target: wasm32-wasip1-threads
+    - run: |
+        curl -L https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-25/wasi-sysroot-25.0.tar.gz -o wasi-sysroot.tar.gz
+        mkdir -p wasi-sysroot
+        tar xf wasi-sysroot.tar.gz --strip-components=1 -C wasi-sysroot
+    - run: |
+        export "CFLAGS_wasm32_wasip1_threads=--sysroot=${{ github.workspace }}/wasi-sysroot -I${{ github.workspace }}/wasi-sysroot/include/wasm32-wasip1-threads -L-I${{ github.workspace }}/wasi-sysroot/lib/wasm32-wasip1-threads"
+        cargo +nightly build --lib --features all --target wasm32-wasip1-threads
+
+on:
+    merge_group:
+        types: [checks_requested]
+    pull_request:
+        branches: [main]
+        types: [opened, synchronize, reopened, ready_for_review]
+    push:
+        branches:
+            - main

Cargo.toml

@@ -3,6 +3,7 @@ name = "async-compression"
 version = "0.4.19"
 authors = ["Wim Looman <wim@nemo157.com>", "Allen Bui <fairingrey@gmail.com>"]
 edition = "2018"
+resolver = "2"
 license = "MIT OR Apache-2.0"
 keywords = ["compression", "gzip", "zstd", "brotli", "async"]
 categories = ["compression", "asynchronous"]
@@ -24,8 +25,9 @@ all-algorithms = ["brotli", "bzip2", "deflate", "gzip", "lzma", "xz", "zlib", "z
 # algorithms
 deflate = ["flate2"]
 gzip = ["flate2"]
-lzma = ["xz2"]
-xz = ["xz2"]
+lzma = ["dep:liblzma"]
+xz = ["lzma"]
+xz2 = ["xz"]
 zlib = ["flate2"]
 zstd = ["libzstd", "zstd-safe"]
 zstdmt = ["zstd", "zstd-safe/zstdmt"]
@@ -41,7 +43,7 @@ libzstd = { package = "zstd", version = "0.13.1", optional = true, default-featu
 memchr = "2"
 pin-project-lite = "0.2"
 tokio = { version = "1.24.2", optional = true, default-features = false }
-xz2 = { version = "0.1.6", optional = true }
+liblzma = { version = "0.3.6", optional = true }
 zstd-safe = { version = "7", optional = true, default-features = false }
 deflate64 = { version = "0.1.5", optional = true }
 

src/codec/mod.rs

@@ -17,7 +17,7 @@ mod gzip;
 mod lzma;
 #[cfg(feature = "xz")]
 mod xz;
-#[cfg(feature = "xz2")]
+#[cfg(feature = "lzma")]
 mod xz2;
 #[cfg(feature = "zlib")]
 mod zlib;
@@ -40,7 +40,7 @@ pub(crate) use self::gzip::{GzipDecoder, GzipEncoder};
 pub(crate) use self::lzma::{LzmaDecoder, LzmaEncoder};
 #[cfg(feature = "xz")]
 pub(crate) use self::xz::{XzDecoder, XzEncoder};
-#[cfg(feature = "xz2")]
+#[cfg(feature = "lzma")]
 pub(crate) use self::xz2::{Xz2Decoder, Xz2Encoder, Xz2FileFormat};
 #[cfg(feature = "zlib")]
 pub(crate) use self::zlib::{ZlibDecoder, ZlibEncoder};

src/codec/xz2/decoder.rs

@@ -1,6 +1,6 @@
 use std::{fmt, io};
 
-use xz2::stream::{Action, Status, Stream};
+use liblzma::stream::{Action, Status, Stream};
 
 use crate::{codec::Decode, util::PartialBuffer};
 

src/codec/xz2/encoder.rs

@@ -1,6 +1,6 @@
 use std::{fmt, io};
 
-use xz2::stream::{Action, Check, LzmaOptions, Status, Stream};
+use liblzma::stream::{Action, Check, LzmaOptions, Status, Stream};
 
 use crate::{
     codec::{Encode, Xz2FileFormat},

src/lib.rs

@@ -139,7 +139,7 @@
 )]
 #![cfg_attr(not(all), allow(unused))]
 
-#[cfg(any(feature = "bzip2", feature = "flate2", feature = "xz2"))]
+#[cfg(any(feature = "bzip2", feature = "flate2", feature = "lzma"))]
 use std::convert::TryInto;
 
 #[macro_use]
@@ -242,7 +242,7 @@ impl Level {
         }
     }
 
-    #[cfg(feature = "xz2")]
+    #[cfg(feature = "lzma")]
     fn into_xz2(self) -> u32 {
         match self {
             Self::Fastest => 0,

tests/utils/algos.rs

@@ -169,13 +169,13 @@ algos! {
             pub use crate::utils::impls::sync::to_vec;
 
             pub fn compress(bytes: &[u8]) -> Vec<u8> {
-                use xz2::bufread::XzEncoder;
+                use liblzma::bufread::XzEncoder;
 
                 to_vec(XzEncoder::new(bytes, 0))
             }
 
             pub fn decompress(bytes: &[u8]) -> Vec<u8> {
-                use xz2::bufread::XzDecoder;
+                use liblzma::bufread::XzDecoder;
 
                 to_vec(XzDecoder::new(bytes))
             }
@@ -187,8 +187,8 @@ algos! {
             pub use crate::utils::impls::sync::to_vec;
 
             pub fn compress(bytes: &[u8]) -> Vec<u8> {
-                use xz2::bufread::XzEncoder;
-                use xz2::stream::{LzmaOptions, Stream};
+                use liblzma::bufread::XzEncoder;
+                use liblzma::stream::{LzmaOptions, Stream};
 
                 to_vec(XzEncoder::new_stream(
                     bytes,
@@ -197,8 +197,8 @@ algos! {
             }
 
             pub fn decompress(bytes: &[u8]) -> Vec<u8> {
-                use xz2::bufread::XzDecoder;
-                use xz2::stream::Stream;
+                use liblzma::bufread::XzDecoder;
+                use liblzma::stream::Stream;
 
                 to_vec(XzDecoder::new_stream(
                     bytes,