feat: Introduce basic ranking rules

raptor-search/src/main.rs

@@ -0,0 +1,34 @@
+extern crate env_logger;
+extern crate fst;
+extern crate raptor;
+
+use std::{fs, env};
+use fst::Streamer;
+use raptor::{DocIndexMap, RankedStream, LevBuilder};
+
+fn main() {
+    drop(env_logger::init());
+
+    let lev_builder = LevBuilder::new();
+    let map = {
+        let fst = fs::read("map.fst").unwrap();
+        let values = fs::read("values.vecs").unwrap();
+        DocIndexMap::from_bytes(fst, &values).unwrap()
+    };
+
+    let query = env::args().nth(1).expect("Please enter query words!");
+    let query = query.to_lowercase();
+
+    println!("Searching for: {:?}", query);
+
+    let mut automatons = Vec::new();
+    for query in query.split_whitespace() {
+        let lev = lev_builder.build_automaton(query);
+        automatons.push(lev);
+    }
+
+    let mut stream = RankedStream::new(&map, map.values(), automatons);
+    while let Some(document_id) = stream.next() {
+        println!("{:?}", document_id);
+    }
+}