Initial commit.

README.md

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+# esaxx-rs
+
+Small wrapper around sentencepiece's esaxx suffix array C++ library.
+Usage
+
+```rust
+let string = "abracadabra".to_string();
+let chars: Vec<_> = string.chars().collect();
+let n = chars.len();
+let mut sa = vec![0; n];
+let mut l = vec![0; n];
+let mut r = vec![0; n];
+let mut d = vec![0; n];
+let mut node_num = 0;
+
+let alphabet_size = 0x110000; // All UCS4 range.
+unsafe {
+    esaxx_int32(
+        chars.as_ptr() as *mut u32,
+        sa.as_mut_ptr(),
+        l.as_mut_ptr(),
+        r.as_mut_ptr(),
+        d.as_mut_ptr(),
+        n.try_into().unwrap(),
+        alphabet_size,
+        &mut node_num,
+    );
+}
+```
+
+Current version: 0.1.0
+
+License: Apache