Add minigrep
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commit
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[package]
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name = "minigrep"
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version = "0.1.0"
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edition = "2021"
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# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
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[dependencies]
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use std::error::Error;
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use std::fs;
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pub struct Config {
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pub query: String,
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pub filename: String,
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}
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impl Config {
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pub fn new(args: &[String]) -> Result<Config, &str> {
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if args.len() < 3 {
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return Err("not enough arguments");
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}
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let query = args[1].clone();
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let filename = args[2].clone();
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Ok(Config { query, filename })
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}
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}
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pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
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let contents = fs::read_to_string(config.filename)?;
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println!("With text:\n{}", contents);
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Ok(())
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}
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use std::{env, process};
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use minigrep::{
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Config,
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run,
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};
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fn main() {
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let args: Vec<String> = env::args().collect();
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let config = Config::new(&args).unwrap_or_else(|err| {
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println!("Problem parsing arguments: {}", err);
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process::exit(1);
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});
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println!("Searching for {}", config.query);
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println!("In file {}", config.filename);
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if let Err(e) = run(config) {
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println!("Application error: {}", e);
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process::exit(1);
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}
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}
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I'm nobody! Who are you?
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Are you nobody, too?
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Then there's a pair of us - don't tell!
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They'd banish us, you know.
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How dreary to be somebody!
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How public, like a frog
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To tell your name the livelong day
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To an admiring bog!
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