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devcli - A command line tool to create command line tools

Why

There's probably no shortage of tools for developers. devcli came from two necessities I had. First, I wanted to avoid memorizing complex command lines and the order of commands for daily repetitive tasks—something like The General Problem. During my time as a software consultant, I had to memorize a lot of these commands for each new project. The second necessity was a consequence of the first. Since new commands had to be added and removed easily, I needed a way to "framework" the creation of these commands, and that's when I decided to create devcli.

Installation

For now the easiest way to use devcli is to clone this repository and using just. You can install just using homebrew on macOS. I don't have the resources to support other platforms. Dependencies are managed through poetry so you need to install it too if you don't have it:

$ brew install just
$ git clone https://github.com/mvaltas/devcli.git
$ cd devcli
$ just install

This should be enough to install devcli and make it available on your path.

Usage

This tool is designed with the principle of discoverability, which means that to explore the tool you can run it without arguments and be able to explore the commands available and find more about them:

devcli

Usage: devcli [OPTIONS] COMMAND [ARGS]...

╭─ Options ────────────────────────────────────────────────────────────╮
│ --debug            Enable debug log                                  │
│ --verbose          Enable info log                                   │
│ --help             Show this message and exit.                       │
╰──────────────────────────────────────────────────────────────────────╯
╭─ Commands ───────────────────────────────────────────────────────────╮
│ example          Examples on how create cli commands with *devcli*   │
│ op               Shortcuts for 1Password CLI                         │
╰──────────────────────────────────────────────────────────────────────╯

Extending

devcli will scan for directories called .devcli in these directories it will expect two things, other commands to load and a configuration file devcli.toml (which can be empty). You can check the example for some examples of how you can extend. For the simplest case we can create a file hello.py in your .devcli directory, like so:

import devcli.framework as cmd
cli = cmd.new("This is a hello world command")
@cli.command()
def say():
    """Simply replies with a Hello, World!"""
    print("Hello, World!")

Once you did that, running devcli again you see a new command available called hello:

$ devcli

 Usage: devcli [OPTIONS] COMMAND [ARGS]...

╭─ Options ────────────────────────────────────────────────────────────╮
│ --debug            Enable debug log                                  │
│ --verbose          Enable info log                                   │
│ --help             Show this message and exit.                       │
╰──────────────────────────────────────────────────────────────────────╯
╭─ Commands ───────────────────────────────────────────────────────────╮
│ example          Examples on how create cli commands with *devcli*   │
│ hello            This is a hello world command                       │
│ op               Shortcuts for 1Password CLI                         │
╰──────────────────────────────────────────────────────────────────────╯

That's it, now you can run the --help to inspect your new command documentation:

$ devcli hello --help

 Usage: devcli hello [OPTIONS] COMMAND [ARGS]...

 This is a hello world command

╭─ Options ───────────────────────────────────────────╮
│ --help          Show this message and exit.         │
╰─────────────────────────────────────────────────────╯
╭─ Commands ──────────────────────────────────────────╮
│ say          Simply replies with Hello, World!      │
╰─────────────────────────────────────────────────────╯

And if you call your new command:

$ devcli hello say
Hello, World!

Now you have created your first devcli command. To learn more about how to create commands check the example command for more advanced options.

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A command line tool to create command line tools.

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