Initial commit

.github/workflows/ci.yaml

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+name: CI
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    types:
+      - opened
+      - synchronize
+jobs:
+  test-linux:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Hello world action step
+        uses: mrkkrp/ormolu-action@master
+        with:
+          who-to-greet: 'Mona the Octocat'

.gitignore

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+node_modules/
+packages/*/node_modules/
+packages/*/lib/
+packages/*/__tests__/_temp/
+.DS_Store
+*.xar
+packages/*/audit.json

LICENSE.md

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+Copyright © 2020–present Mark Karpov
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice,
+  this list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright
+  notice, this list of conditions and the following disclaimer in the
+  documentation and/or other materials provided with the distribution.
+
+* Neither the name Mark Karpov nor the names of contributors may be used to
+  endorse or promote products derived from this software without specific
+  prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS “AS IS” AND ANY EXPRESS
+OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

README.md

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+# Ormolu action
+
+![CI](https://github.com/mrkkrp/ormolu-action/workflows/CI/badge.svg?branch=master)
+
+This is Ormolu action that helps to ensure that your Haskell project is
+formatted with [Ormolu][ormolu].
+
+* A detailed description of what the action does
+
+## Inputs
+
+TODO
+
+## Outputs
+
+TODO
+
+## Example usage
+
+```yaml
+TODO
+```
+
+[ormolu]: https://github.com/tweag/ormolu

action.yml

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+name: 'Ormolu'
+description: 'Check formatting of Haskell code with Ormolu'
+inputs:
+  who-to-greet:
+    description: 'Who to greet'
+    required: true
+    default: 'World'
+runs:
+  using: 'node12'
+  main: 'dist/index.js'

index.js

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+const core = require('@actions/core');
+const github = require('@actions/github');
+
+// https://github.com/actions/toolkit
+
+// 1. download ormolu executable using @actions/tool-cache perhaps
+// https://github.com/tweag/ormolu/releases/download/0.1.3.0/ormolu-Linux
+// https://github.com/tweag/ormolu/releases/download/0.1.3.0/ormolu-macOS
+// https://github.com/tweag/ormolu/releases/download/0.1.3.0/ormolu-Windows
+
+// 2. grep Haskell files and run ormolu
+
+// 3. call git to highlight diffs
+
+try {
+  // `who-to-greet` input defined in action metadata file
+  const nameToGreet = core.getInput('who-to-greet');
+  console.log(`Hello ${nameToGreet}!`);
+  const time = (new Date()).toTimeString();
+  core.setOutput("time", time);
+  // Get the JSON webhook payload for the event that triggered the workflow
+  const payload = JSON.stringify(github.context.payload, undefined, 2)
+  console.log(`The event payload: ${payload}`);
+} catch (error) {
+  core.setFailed(error.message);
+}

package.json

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+{
+  "name": "ormolu-action",
+  "version": "1.0.0",
+  "description": "Check formatting of Haskell code with Ormolu.",
+  "main": "index.js",
+  "scripts": {
+    "prepare": "ncc build index.js -o dist",
+    "all": "npm run prepare"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/mrkkrp/ormolu-action.git"
+  },
+  "keywords": [
+    "foramtter",
+    "haskell"
+  ],
+  "author": "Mark Karpov",
+  "license": "BSD 3 clause",
+  "dependencies": {
+    "@actions/core": "^1.1.0",
+    "@actions/github": "^1.1.0",
+    "@vercel/ncc": "^0.24.1"
+  },
+  "devDependencies": {
+    "@vercel/ncc": "^0.24.0"
+  },
+  "bugs": {
+    "url": "https://github.com/mrkkrp/ormolu-action/issues"
+  },
+  "homepage": "https://github.com/mrkkrp/ormolu-action#readme"
+}

test-code/Main

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+module Main (main) where
+
+main :: IO ()
+main = return ()

test-code/Main.hs

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+module Main (main) where
+
+main :: IO ()
+main = return ()