rust-main-abel-test 0.1.0

abel-test
Documentation 
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//! #rust_main
//!
//!
use std::{error::Error, fs, vec};

#[derive(Debug)]
pub struct Config {
    pub query: String,
    pub filename: String,
}

///
/// # Examples
/// ```
/// let str = read_staring(path);
/// prinln!("{:?}",str);
/// ```
///

pub fn read_string(path: &str) -> Result<String, std::io::Error> {
    let str = fs::read_to_string(path)?;
    Ok(str)
}

pub fn parse_config(args: &Vec<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 content = read_string(&config.filename)?;
    for line in search(&config.query, &content) {
        println!("{}", line)
    }
    Ok(())
}

pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
    let mut results = vec![];
    for line in contents.lines() {
        if line.contains(query) {
            results.push(line);
        }
    }
    results
}

#[cfg(test)]
mod tests {
    use super::*;
    #[test]

    fn case_sensitive() {
        let query = "rust";
        let contents = "
Rust
safe, fast, productive.
Pick three.
";
        let res = search(query, contents);
        assert_eq!(vec!["Rust"], res);
    }
}