Added lifetimes; split code into library for minigrep.

2 files changed, 38 insertions, 29 deletions

diff --git a/minigrep/src/lib.rs b/minigrep/src/lib.rs
new file mode 100644
index 0000000..78610ba
--- /dev/null
+++ b/minigrep/src/lib.rs
@@ -0,0 +1,29 @@
+use std::error::Error;
+use std::fs;
+
+pub struct Config {
+    pub query: String,
+    pub filename: String,
+}
+
+impl Config {
+
+    pub fn new(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)?;
+    dbg!(contents);
+    Ok(())
+}
+
diff --git a/minigrep/src/main.rs b/minigrep/src/main.rs
index 1e04b5e..fc5ae9a 100644
--- a/minigrep/src/main.rs
+++ b/minigrep/src/main.rs
@@ -1,6 +1,8 @@
 use std::process;
 use std::env;
-use std::fs;
+
+use minigrep;
+use minigrep::Config;
 
 fn main() {
     let args: Vec<String> = env::args().collect();
@@ -8,33 +10,11 @@ fn main() {
         println!("Problem parsing arguments: {}", err);
         process::exit(1);
     });
-
-    println!("Searching for {}", config.query);
-    println!("In file {}", config.filename);
-
-    let contents = fs::read_to_string(config.filename)
-        .expect("something went wrong.");
-
-    dbg!(contents);
-}
-
-struct Config {
-    query: String,
-    filename: String,
-}
-
-impl Config {
-
-
-    fn new(args: &[String]) -> Result<Config, &'static str> {
-
-        if args.len() < 3 {
-            panic!("not enough args");
-        }
-
-        let query = args[1].clone();
-        let filename = args[2].clone();
-        Ok(Config { query, filename })
+    println!("\nSearching for {}", config.query);
+    println!("    in file {}", config.filename);
+    if let Err(e) = minigrep::run(config) {
+        println!("Application error: {}", e);
+        process::exit(1);
     }
-
 }
+