# CLI Utility for Rendering Templates with TOML Args
This is a CLI utility written in Rust that allows you to render templates using args specified in a TOML file.
The tool uses the [clap](https://github.com/clap-rs/clap) and [handlebars](https://github.com/sunng87/handlebars-rust) libraries for command line argument parsing and template rendering respectively.

## Installation
To use this tool, you need to have [Rust](https://www.rust-lang.org/) installed on your system.
You can then install the tool using `cargo`, Rust's package manager.

```bash
cargo install tompl
```

## Usage
```bash
tompl render --input ./path/to/config.toml --output ./out/rendered.txt
```

## TOML File Format
The TOML file should have the following format:

```toml
template = "./path/to/template.txt"

[params]
param1 = "value1"
nparam2 = "value2"
user = "{{env.USER}}"
```

- `template`: The path to the template file that you want to render.
- `params`: A table containing the arguments that you want to pass to the template.

You can use the `env` parameter in the `params` table to access environment variables.


## Example
Assuming that the `config.toml` file has the following contents:

```toml
template = "./template.txt"

[params]
name = "John"
age = 30
```

And the `template.txt` file has the following contents:

```txt
Hello, {{name}}!
You are {{age}} years old.
Environment variables:
{{#each env}}
- {{@key}}: {{this}}
{{/each}}
```

The above command will render the template using the arguments specified in the TOML file and write the output to the `output.txt` file