Initial Commit

.github/workflows/test.yml

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+name: "test-local"
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+      - "releases/*"
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+      - name: NPM Install
+        run: npm ci
+      - name: Test
+        run: npm test
+      - name: Package
+        run: npm run package
+      - name: Run Action
+        uses: ./
+        id: run
+        with:
+          main-branch: master
+          release-branch: release

.gitignore

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+node_modules/
+
+# Editors
+.vscode
+
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Other Dependency directories
+jspm_packages/
+
+# TypeScript v1 declaration files
+typings/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+
+# next.js build output
+.next

LICENSE

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+MIT License
+
+Copyright (c) 2019 Paul Hatcherian
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

action.yml

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+name: "Semantic Version"
+description: "Determines version of a repo"
+branding:
+  icon: "layers"
+  color: "blue"
+inputs:
+  main_branch:
+    description: "main branch"
+    required: true
+    default: "master"
+  release_branch:
+    description: "the release branch pattern which be be used as a prefix for release branches"
+    required: true
+    default: "release"
+  major_pattern:
+    description: "a string which, if present in a git commit, indicates that a change represents a major (breaking) change"
+    required: true
+    default: "(MAJOR)"
+  minor_pattern:
+    description: "a string which, if present in a git commit, indicates that a change represents a minor (feature) change"
+    required: true
+    default: "(MINOR)"
+
+outputs:
+  major:
+    description: "Current major number"
+  minor:
+    description: "Current minor number"
+  patch:
+    description: "Current patch number"
+  increment:
+    description: "An additional value indicating the number of commits for the current version"
+  version:
+    description: "The version result, in the format {major}.{minor}.{patch}"
+runs:
+  using: "node12"
+  main: "dist/index.js"

index.js

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+const core = require('@actions/core');
+const exec = require("@actions/exec");
+const eol = require('os').EOL;
+
+const cmd = async (command, ...args) => {
+  let output = '';
+  const options = {};
+  options.listeners = {
+    silent: true,
+    stdout: (data) => { output += data.toString(); }
+  };
+  await exec.exec(command, args, options)
+    .catch(err => core.error(err));
+  return output;
+};
+
+async function run() {
+  try {
+    const remotePrefix = 'origin/';
+
+    const releasePattern = `${remotePrefix}${core.getInput('release_branch', { required: true })}/*`;
+    const majorPattern = core.getInput('major_pattern', { required: true });
+    const minorPattern = core.getInput('minor_pattern', { required: true });
+    const mainBranch = `${remotePrefix}${core.getInput('main_branch', { required: true })}`;
+
+    let major = 0, minor = 0, patch = 0;
+
+    let branches = await cmd(
+      'git',
+      `branch`,
+      `-r`,
+      `--list`,
+      `--format='%(refname:short)'`,
+      `--sort=-committerdate`,
+      releasePattern
+    );
+
+    var root;
+    if (branches === '') {
+      // no release branches yet, use the initial commit as the root
+      root = await cmd('git', `rev-list`, `--max-parents=0`, mainBranch);
+    } else {
+      // find the merge base between the last 
+      var releaseBranch = branches.split(eol)[0];
+      var versionValues = releaseBranch.split('/')[1].split('.');
+      major = parseInt(versionValues[0]);
+      minor = parseInt(versionValues[1]);
+      patch = parseInt(versionValues[2]);
+
+      root = await cmd('git', `merge-base`, releaseBranch, mainBranch);
+    }
+    root = root.trim();
+
+    let history = (await cmd('git', 'log', '--pretty="%s"', root, mainBranch)).split(eol);
+
+    patch++;
+    var increment = history.length;
+    for (var i = 0; i < history.length; i++) {
+      if (history[i].indexOf(majorPattern) !== -1) {
+        major++;
+        minor = 0;
+        patch = 0;
+        increment = i + 1;
+        break;
+      } else if (history[i].indexOf(minorPattern) !== -1) {
+        minor++;
+        patch = 0;
+        increment = i + 1;
+        break;
+      }
+    }
+
+    let version = `${major}.${minor}.${patch}`;
+    core.info(`Version is ${version}+${increment}`);
+    core.setOutput("version", version);
+    core.setOutput("major", major);
+    core.setOutput("minor", minor);
+    core.setOutput("patch", patch);
+    core.setOutput("increment", increment);
+
+  } catch (error) {
+    console.log(error);
+    core.setFailed(error.message);
+  }
+}
+
+run();

index.test.js

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+/*global test */
+const cp = require('child_process');
+const path = require('path');
+const process = require('process');
+
+// shows how the runner will run a javascript action with env / stdout protocol
+test('test runs', () => {
+    process.env['INPUT_MAIN_BRANCH'] = "master";
+    process.env['INPUT_RELEASE_BRANCH'] = "release";
+    process.env['INPUT_MAJOR_PATTERN'] = "(MAJOR)";
+    process.env['INPUT_MINOR_PATTERN'] = "(MINOR)";
+
+    const ip = path.join(__dirname, 'index.js');
+    try {
+        console.log(cp.execSync(`node ${ip}`, { env: process.env }).toString());
+    }
+    catch (e) {
+        console.error(String(e.stdout));
+        console.error(String(e.stderr));
+        throw e;
+    }
+})

package.json

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+{
+  "name": "semantic-version",
+  "version": "1.0.0",
+  "description": "Semantic Version GitHub Action",
+  "main": "index.js",
+  "scripts": {
+    "lint": "eslint index.js",
+    "package": "ncc build index.js -o dist",
+    "test": "eslint index.js && jest"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/paulhatch/semantic-version.git"
+  },
+  "keywords": [
+    "GitHub",
+    "Actions",
+    "JavaScript"
+  ],
+  "author": "Paul Hatcherian",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/paulhatch/semantic-version/issues"
+  },
+  "homepage": "https://github.com/paulhatch/semantic-version#readme",
+  "dependencies": {
+    "@actions/core": "^1.1.1",
+    "@actions/exec": "^1.0.1"
+  },
+  "devDependencies": {
+    "@zeit/ncc": "^0.20.5",
+    "eslint": "^6.3.0",
+    "jest": "^24.9.0"
+  }
+}

readme.md

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+<p align="center">
+  <a href="https://github.com/paulhatch/semantic-version"><img alt="GitHub Actions status" src="https://github.com/paulhatch/semantic-version/workflows/test-local/badge.svg"></a>
+</p>
+
+# Git-Based Semantic Versioning
+
+This action produces a [semantic version](https://semver.org) for a repository
+using the repositories git history.
+
+# Usage
+
+<!-- start usage -->
+
+```yaml
+- uses: paulhatch/semantic-version@v1
+  with:
+    #
+    main_branch: "master"
+    # The release branch pattern which be be used as a prefix for release branches
+    release_branch: "release"
+    # A string which, if present in a git commit, indicates that a change represents a major (breaking) change
+    major_pattern: "(MAJOR)"
+    # Same as above except indicating a minor change
+    minor_pattern: "(MINOR)"
+```