# rgon - A simple Rust-based grep clone

`rgon` is a command-line tool written in Rust that searches for a query string within a file.

## Features

- Search for a query string in a text file.
- Case-insensitive search if the `IGNORE_CASE` environment variable is set.
- Prints matching lines from the file.

## Installation

To use `rgon`, you'll need to have Rust and Cargo installed. If you don't have them, you can install them from [https://rust-lang.org](https://rust-lang.org).

To install and run `rgon`, clone the repository and build the project:

```bash
git clone https://github.com/jmeq17/rgon.git
cd rgon
cargo build --release
```

## Usage

Once installed, you can use `rgon` by running the following command:

```bash
cargo run -- [OPTIONS] <query> <file_path>
```

### Example

```bash
cargo run -- "to" "assets/tinyTale.txt"
```

This will search for the string `"to"` in the file `assets/tinyTale.txt` and print all matching lines.

### Case-Insensitive Search

To perform a case-insensitive search, set the `IGNORE_CASE` environment variable:

```bash
cargo run -- -i "To" "assets/tinyTale.txt"
```

This will match both `"To"` and `"to"` in the file.

## OPTIONS

- `-i` or `--ignore-case`：ignore case sensitivity.

## Tests

To run the tests:

```bash
cargo test
```

This will run the unit tests for `search` and `search_case_insensitive` functions.

## License

This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.