Merge pull request #4 from akoken/feature-handle-args-better

Use clap for command line arguments

Cargo.toml

@@ -4,3 +4,4 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
+clap = { version = "4.5.20", features = ["derive"] }

README.md

@@ -33,8 +33,7 @@ To install Minigrep, you can download binaries or follow these steps:
 
 2. Case-insensitive search for "warning" in a log file:
    ```bash
-   export IGNORE_CASE=1
-   minigrep warning app.log
+   minigrep -i warning app.log
    ```
 
 ## Contributing

src/args.rs

@@ -0,0 +1,46 @@
+use clap::{Arg, ArgAction, Command};
+
+#[derive(Debug)]
+pub struct Config {
+    pub pattern: String,
+    pub filename: String,
+    pub ignore_case: bool,
+}
+
+pub fn parse_args() -> Config {
+    let matches = Command::new("minigrep")
+        .version("1.0")
+        .author("Abdurrahman Alp Köken")
+        .about("Searches for a pattern in a file")
+        .arg(
+            Arg::new("pattern")
+                .help("The pattern to search for")
+                .required(true)
+                .index(1),
+        )
+        .arg(
+            Arg::new("file")
+                .help("The file to search in")
+                .required(true)
+                .index(2),
+        )
+        .arg(
+            Arg::new("ignore_case")
+                .short('i')
+                .long("ignore-case")
+                .help("Ignore case during search")
+                .action(ArgAction::SetTrue),
+        )
+        .get_matches();
+
+    // Get the values from the matches
+    let pattern = matches.get_one::<String>("pattern").unwrap().to_string();
+    let filename = matches.get_one::<String>("file").unwrap().to_string();
+    let ignore_case = matches.get_flag("ignore_case");
+
+    Config {
+        pattern,
+        filename,
+        ignore_case,
+    }
+}