Swish - A Swift script running tool

by iOS Example

Swish

Swish is a Swift script running tool. Easily run Swift packages in a supporting relative dir named Swish

Swish pairs nicely with Dh to run shell commands and process shell output from your Swift scripts.

Motivation

There’s currently not a great solution to declare some targets as dev dependencies or support scripts in a Package.swift. So what if we had a subdirectory with our Swift support scripts? $PROJECT_ROOT/support-dir/Package.swift?

But there’s currently not a great solution to running Swift packages in another directory. We can type swift run --package-path path/to/dir targetName, but that’s a lot for quick scripts. We could store that in a .sh script file, but I would prefer not to get shell scripts involved with Swift tools.

And if we’re running this script during an Xcode build for an iOS project, we need to pass along an SDK flag, to build the Swift script for MacOS.

This is all doable. And this becomes repetitive across multiple projects.

Installation

Swish is currently available through Mint or manual installation.

Mint

Install with Mint

mint install FullQueueDeveloper/Swish

Manual

git clone https://github.com/FullQueueDeveloper/Swish.git
cd swish
swift build -c release

And then add .build/release/ to your $PATH.

Getting started

swish --init

Will scaffold a new Swish project in the swish subdirectory of your current working directory. This is what it will look like.

CWD
 |
 +- Swish
      |
      +- Package.swift
      +- .gitignore
      +- Sources/script1/main.swift

Then you can run swish or swish --list to see the current executable targets. Then you can run swish script1 to run the simple sample script named script1.

Usage

Regular use

swish <target-name> [arguments...]

- <target-name>  The name of the `executableTarget` in the
                            `Package.swift` in the `scripts`
                            subdirectory of the current working
                            directory.
- [arguments...]  Arguments passed to the target

Available commands

swish
    list the available targets

swish --list
    list the available targets

swish --version
    show version and exit

swish --help
    show this message

swish --init
    scaffold a new Swish scripts subdirectory in
    the current directory. The default scripts
    subdirectory is `scripts`

swish --add <name>
    add a new script named <name> by
    creating a file at path `Sources/<name>/main.swift`
    & adding an `.executableTarget` to `Package.swift`

swish --build
    update & build the scripts package, as a convenience.

Demos

There is an example project in the demos folder

  • The VaporDemo is a Vapor app. It can be a handful to type out a full docker build command with all flags and arguments. This example is short, but still meaningful. Running swish docker from the demos/VaporDemo directory will build the docker container for this small vapor app.

GitHub

View Github