Add basic python binding (#29)

* Add basic python binding

* Add CI for binding

* Change cd before using maturin

.github/workflows/Bindings.yml

@@ -37,4 +37,17 @@ jobs:
 
       - name: Run Tests
         working-directory: bindings/lz-str-wasm/binding-tests
-        run: npm test
+        run: npm test
+
+  Python:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Install Maturin
+        run: pip install maturin
+
+      - name: Build Wheel
+        working-directory: bindings/lz-str-py
+        run: maturin build --release

Cargo.toml

@@ -38,4 +38,10 @@ harness = false
 [workspace]
 members = [
     "bindings/*",
-]
+]
+
+[profile.release]
+opt-level = 3
+lto = "fat"
+codegen-units = 1
+strip = "symbols"

bindings/lz-str-py/.gitignore

@@ -0,0 +1 @@
+.venv

bindings/lz-str-py/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "lz-str-py"
+version = "0.0.0"
+edition = "2021"
+
+[lib]
+name = "lz_str_py"
+crate-type = [ "cdylib" ]
+
+[dependencies]
+lz-str = { path = "../.." }
+pyo3 = { version = "0.17.2", features = [ "extension-module", "abi3", "abi3-py37" ] }

bindings/lz-str-py/pyproject.toml

@@ -0,0 +1,7 @@
+[build-system]
+requires = [ "maturin>=0.13,<0.14" ]
+build-backend = "maturin"
+
+[project]
+name = "lz_str_py"
+requires-python = ">=3.7"

bindings/lz-str-py/src/lib.rs

@@ -0,0 +1,31 @@
+use pyo3::exceptions::PyValueError;
+use pyo3::prelude::*;
+use pyo3::types::PyString;
+
+#[pyfunction(name = "compressToBase64")]
+pub fn compress_to_base64(input: &PyString) -> PyResult<String> {
+    let input = input.to_str()?;
+    Ok(lz_str::compress_to_base64(input))
+}
+
+#[pyfunction(name = "decompressFromBase64")]
+pub fn decompress_from_base64(input: &PyString) -> PyResult<String> {
+    let input = input.to_str()?;
+    match lz_str::decompress_from_base64(input) {
+        Some(result) => {
+            // TODO: Make string from invalid unicode
+            match String::from_utf16(&result) {
+                Ok(value) => Ok(value),
+                Err(_e) => Err(PyValueError::new_err("invalid unicode output")),
+            }
+        }
+        None => Err(PyValueError::new_err("invalid input")),
+    }
+}
+
+#[pymodule]
+fn lz_str_py(_py: Python<'_>, m: &PyModule) -> PyResult<()> {
+    m.add_function(wrap_pyfunction!(compress_to_base64, m)?)?;
+    m.add_function(wrap_pyfunction!(decompress_from_base64, m)?)?;
+    Ok(())
+}