Initial commit

.gitignore

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+/target
+**/*.rs.bk

Cargo.toml

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+[package]
+name = "choose"
+version = "0.1.0"
+authors = ["Aaron Greenberg <[email protected]>"]
+
+[dependencies]
+clap = "2.32.0"
+rand = "0.5.3"

src/main.rs

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+extern crate clap;
+extern crate rand;
+
+use clap::{Arg, App};
+use rand::{thread_rng, Rng};
+use std::io::{self, Read};
+
+fn main() {
+    let matches = App::new("choose")
+        .version("0.1.0")
+        .author("Aaron Greenberg <[email protected]>")
+        .about("a command line tool for random selection from a list")
+        .arg(Arg::with_name("count")
+            .takes_value(true)
+            .default_value("1")
+            .help("number of items to choose"))
+        .arg(Arg::with_name("delimiter")
+            .short("d")
+            .takes_value(true)
+            .default_value("\n")
+            .help("list delimiter"))
+        .get_matches();
+    let count = matches.value_of("count").unwrap().parse::<i32>().unwrap();
+    let delim = matches.value_of("delimiter").unwrap();
+
+    let mut buffer = String::new();
+    io::stdin().read_to_string(&mut buffer).unwrap();
+    let choices: Vec<&str> = buffer.split(delim).collect();
+
+    let mut rng = thread_rng();
+    for _ in 0..count {
+      println!("{}", rng.choose(&choices).unwrap());
+    }
+}