src/lib.rs

@@ -1,56 +1,27 @@
-use std::fs;
-//use std::fs::File;
-//use std::io::prelude::*;
+use std::fs::File;
+use std::io::prelude::*;
 use std::error::Error;
-use std::env;
 
 pub struct Config {
     query: String,
     filename: String,
-    insensitive: bool,
 }
 
-pub fn run(conf: Config) -> Result<(), Box<dyn Error>> {
-    let contents = fs::read_to_string(conf.filename)?;
+pub fn run(conf: Config) -> Result<(), Box<Error>> {
+    println!("{:?} {:?}", conf.query, conf.filename);
 
-    let results = if conf.insensitive {
-        search(&conf.query, &contents)
-    } else {
-        search_insensitive(&conf.query, &contents)
-    };
+    let mut f = File::open(&conf.filename)?;
 
-    for line in results {
-        println!("{}", line);
-    }
+    let mut contents = String::new();
+    f.read_to_string(&mut contents)?;
+
+    println!("Searching for '{}'", conf.query);
+    println!("In file '{}'", conf.filename);
+    println!("With text:\n{}", contents);
 
     Ok(())
 }
 
-fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
-    let mut results = Vec::new();
-
-    for line in contents.lines() {
-        if line.contains(query) {
-          results.push(line);
-        }
-    }
-
-    results
-}
-
-fn search_insensitive<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
-    let query = query.to_lowercase();
-    let mut results = Vec::new();
-
-    for line in contents.lines() {
-        if line.to_lowercase().contains(&query) {
-          results.push(line);
-        }
-    }
-
-    results
-}
-
 impl Config {
     pub fn new(args: &[String]) -> Result<Config, &'static str> {
         if args.len() < 3 {
@@ -60,41 +31,6 @@ impl Config {
         Ok(Config {
             query: args[1].clone(),
             filename: args[2].clone(),
-            insensitive: env::var("CASE_INSENSITIVE").is_err(),
         })
     }
 }
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn case_sensitive() {
-        let query = "duct";
-        let contents = "\
-Rust:
-safe, fast, productive.
-Pick three.";
-
-        assert_eq!(
-            vec!["safe, fast, productive."],
-            search(query, contents)
-        );
-    }
-
-    #[test]
-    fn case_insensitive() {
-        let query = "rUsT";
-        let contents = "\
-Rust:
-safe, fast, productive.
-Pick three.
-Trust me.";
-
-        assert_eq!(
-            vec!["Rust:", "Trust me."],
-            search_insensitive(query, contents)
-        );
-    }
-}

src/main.rs

@@ -7,13 +7,13 @@ fn main() {
     let args: Vec<String> = env::args().collect();
 
     let conf = grep::Config::new(&args).unwrap_or_else(|err| {
-        eprintln!("Problem parsing arguments: {}", err);
+        println!("Problem parsing arguments: {}", err);
         process::exit(1);
     });
     //let filename = &conf.filename.clone();
 
     if let Err(e) = grep::run(conf) {
-        eprintln!("Big bad bada boom!\n{:?}", e);
+        println!("Big bad bada boom!\n{:?}", e);
         //println!("Big bad bada boom!\n{:?}", e.kind());
         //println!("Big bad bada boom!\n{}", e.description());