From 452483b1b37753abd032ade3e3097503c824b910 Mon Sep 17 00:00:00 2001
From: Mohammad Kanaan <mohammad.kanaan@sowlutions.com>
Date: Mon, 27 Jul 2026 11:43:48 +0300
Subject: [PATCH] feat: implement an iterator to get the test with a test
 consumer

---
 src/main.rs   |  8 +++++++-
 src/parser.rs | 27 +++++++++++++++++++++++++++
 test.txt      |  2 ++
 3 files changed, 36 insertions(+), 1 deletion(-)
 create mode 100644 src/parser.rs
 create mode 100644 test.txt

diff --git a/src/main.rs b/src/main.rs
index 2f1140d..3befdee 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,4 +1,5 @@
 use clap::Parser;
+mod parser;
 
 #[derive(Parser)]
 struct Cli {
@@ -6,9 +7,14 @@ struct Cli {
     file_path: String,
 }
 
-fn main() {
+fn main() -> anyhow::Result<()> {
     let cli = Cli::parse();
 
+    let lines_iter = parser::read_lines(&cli.file_path)?;
+    parser::consume_lines(lines_iter);
+
     println!("Pattern: {}", cli.pattern);
     println!("File path: {}", cli.file_path);
+
+    Ok(())
 }
diff --git a/src/parser.rs b/src/parser.rs
new file mode 100644
index 0000000..9f00f16
--- /dev/null
+++ b/src/parser.rs
@@ -0,0 +1,27 @@
+use std::{
+    fs::File,
+    io::{BufRead, BufReader},
+};
+
+use anyhow::Context;
+
+pub fn read_lines(
+    file_path: &str,
+) -> anyhow::Result<impl Iterator<Item = std::io::Result<String>>, anyhow::Error> {
+    if file_path.is_empty() {
+        return Err(anyhow::anyhow!("File path cannot be empty"));
+    }
+
+    let file =
+        File::open(file_path).with_context(|| format!("failed to open file: {file_path}"))?;
+    let reader = BufReader::new(file);
+
+    Ok(reader.lines())
+}
+
+pub fn consume_lines(iter: impl Iterator<Item = std::io::Result<String>>) {
+    for line in iter {
+        let line = line.unwrap_or("".into());
+        println!("{line}");
+    }
+}
diff --git a/test.txt b/test.txt
new file mode 100644
index 0000000..0c21a56
--- /dev/null
+++ b/test.txt
@@ -0,0 +1,2 @@
+hola
+no