add interactive mode

src/main.rs

@@ -1,4 +1,6 @@
-use argparse::{ArgumentParser, List, Print, Store};
+use std::io::{stdin, stdout, Write};
+
+use argparse::{ArgumentParser, List, Print, Store, StoreTrue};
 use colored::*;
 use serde_json::Value;
 
@@ -13,6 +15,7 @@ struct Options {
     limit: usize,
     query: String,
     kanji: bool, // Sadly not (yet) supported by jisho.org's API
+    interactive: bool,
 }
 
 impl Default for Options {
@@ -21,6 +24,7 @@ impl Default for Options {
             limit: 4,
             query: String::default(),
             kanji: false,
+            interactive: false,
         }
     }
 }
@@ -28,8 +32,22 @@ impl Default for Options {
 fn main() -> Result<(), ureq::Error> {
     let options = parse_args();
 
+    let mut query = {
+        if options.interactive {
+            print!("=> ");
+            stdout().flush().unwrap();
+
+            let mut o = String::new();
+            stdin().read_line(&mut o).expect("Can't read from stdin");
+            o
+        } else {
+            options.query.clone()
+        }
+    };
+
+    loop {
         // Do API request
-    let body: Value = ureq::get(&format!(JISHO_URL!(), options.query))
+        let body: Value = ureq::get(&format!(JISHO_URL!(), query))
             .call()?
             .into_json()?;
 
@@ -45,17 +63,33 @@ fn main() -> Result<(), ureq::Error> {
             body.unwrap()
         });
 
+        if options.interactive {
+            println!();
+        }
+
         // Iterate over meanings and print them
         for (i, entry) in body.iter().enumerate() {
             if i >= options.limit {
                 break;
             }
 
-        if print_item(&options.query, entry).is_some() && i + 2 <= options.limit {
+            if print_item(&query, entry).is_some() && i + 2 <= options.limit {
                 println!();
             }
         }
 
+        if !options.interactive {
+            break;
+        }
+
+        print!("\n=> ");
+        stdout().flush().unwrap();
+        query.clear();
+        stdin()
+            .read_line(&mut query)
+            .expect("Can't read from stdin");
+    }
+
     Ok(())
 }
 
@@ -228,6 +262,12 @@ fn parse_args() -> Options {
         ap.refer(&mut query_vec)
             .add_argument("Query", List, "The query to search for");
 
+        ap.refer(&mut options.interactive).add_option(
+            &["-i", "--interactive"],
+            StoreTrue,
+            "Don't exit after running a query",
+        );
+
         /* Uncomment when supported by jisho.org
         ap.refer(&mut options.kanji).add_option(
             &["--kanji", "-k"],