mirror of https://github.com/rust-lang/book
49 lines
906 B
Rust
49 lines
906 B
Rust
use std::error::Error;
|
|
use std::fs;
|
|
|
|
pub struct Config {
|
|
pub query: String,
|
|
pub filename: String,
|
|
}
|
|
|
|
impl Config {
|
|
pub fn build(args: &[String]) -> Result<Config, &'static str> {
|
|
if args.len() < 3 {
|
|
return Err("not enough arguments");
|
|
}
|
|
|
|
let query = args[1].clone();
|
|
let filename = args[2].clone();
|
|
|
|
Ok(Config { query, filename })
|
|
}
|
|
}
|
|
|
|
pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
|
|
let contents = fs::read_to_string(config.filename)?;
|
|
|
|
Ok(())
|
|
}
|
|
|
|
// ANCHOR: here
|
|
pub fn search(query: &str, contents: &str) -> Vec<&str> {
|
|
vec![]
|
|
}
|
|
// ANCHOR_END: here
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::*;
|
|
|
|
#[test]
|
|
fn one_result() {
|
|
let query = "duct";
|
|
let contents = "\
|
|
Rust:
|
|
safe, fast, productive.
|
|
Pick three.";
|
|
|
|
assert_eq!(vec!["safe, fast, productive."], search(query, contents));
|
|
}
|
|
}
|