feat: Introduce the index module

examples/create-index.rs

@@ -0,0 +1,41 @@
+use std::path::Path;
+use std::error::Error;
+use std::path::PathBuf;
+use std::io::{self, Write};
+
+use elapsed::measure_time;
+use moby_name_gen::random_name;
+use structopt::StructOpt;
+
+use pentium::index::update::Update;
+use pentium::index::Index;
+
+#[derive(Debug, StructOpt)]
+pub struct Cmd {
+    /// csv file to index
+    #[structopt(parse(from_os_str))]
+    pub csv_file: PathBuf,
+}
+
+fn generate_update_from_csv(path: &Path) -> Result<Update, Box<Error>> {
+    unimplemented!()
+}
+
+fn main() -> Result<(), Box<Error>> {
+    let command = Cmd::from_args();
+
+    let path = random_name();
+
+    println!("generating the update...");
+    let update = generate_update_from_csv(&command.csv_file)?;
+
+    println!("creating the index");
+    let index = Index::open(&path)?;
+
+    println!("ingesting the changes in the index");
+    index.ingest_update(update)?;
+
+    println!("the index {:?} has been created!", path);
+
+    Ok(())
+}